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Sample records for aula como campo

  1. Las fulguraciones como manifestación de reconexión en el campo magnético solar

    NASA Astrophysics Data System (ADS)

    Bagalá, L. G.; Mandrini, M. C.; Rovira, M. G.; Démoulin, P.

    Las fulguraciones solares son fenómenos transitorios de liberación de energía que se desarrollan en las estructuras magnéticas de las regiones activas del Sol. Las fulguraciones pueden llegar a liberar hasta 1032 erg en 100 seg. en todo el rango electromagnético, y acelerar partículas. En este trabajo mostramos que la ubicación de los abrillantamientos en Hα de diversas fulguraciones está relacionado con las propiedades de las conexiones de las líneas del campo magnético de la región, como se espera por las teorías de reconexión en 3D recientemente desarrolladas (Démoulin et al, 1996a). El campo magnético coronal se extrapola del campo fotosférico observado suponiendo una configuración libre de fuerzas lineal. Por medio de un algoritmo se determinan las regiones donde existe un cambio drástico en la conectividad de las líneas de campo (límites ``cuasi-discontinuos'', o cuasi-separatrices CS). Las CS son bandas abiertas que identifican zonas donde el campo magnético se reconectará con más probabilidad y, siempre que las mismas sean lo suficientemente finas, se producirá allíla liberación de energía proveniente del campo magnético. Hemos encontrado que en todas las regiones fulgurantes estudiadas (Démoulin et al, 1996b) existen CS en los mismos lugares donde se observaron los abrillantamientos en Hα. Allídonde coinciden los abrillantamientos con las CS, éstas tienen un espesor menor que 1 Mm. Las líneas de campo coronales extrapoladas de nuestro modelo tienen sus orígenes fotosféricos a ambos lados de las CS, como se espera dados los recientes estudios de reconexión magnética en 3D. Estos resultados ponen a prueba los modelos presentes sobre fulguraciones solares.

  2. Campo de velocidade peculiar na teoria linear

    NASA Astrophysics Data System (ADS)

    Pires, N.

    2003-08-01

    Aglomerados e superaglomerados de galáxias são responsáveis pela chamada velocidade peculiar (movimentos relativos à expansão pura do universo) das galáxias. A amplitude destas perturbações depende da densidade de matéria do universo e do contraste de densidade no interior do volume onde está localizada a galáxia. Em 1980, Peebles introduziu o fator "f", que relaciona a amplitude das perturbações da velocidade com o campo gravitacional peculiar, no contexto da teoria linear. No presente trabalho obtemos uma solução geral analítica para o fator "f" de Peebles do campo de velocidades peculiares, em termos de funções hipergeométricas, válida para qualquer geometria do universo. Como um teste de nossa solução, os resultados encontrados originalmente por Peebles em 1980 e os resultados mais gerais encontrados por O. Lahav e colaboradores em 1991, são reobtidos.

  3. Sistemas Correctores de Campo Para EL Telescopio Cassegrain IAC80

    NASA Astrophysics Data System (ADS)

    Galan, M. J.; Cobos, F. J.

    1987-05-01

    El proyecto de instrumentación de mayor importancia que ha tenido el Instituto de Astrofisica de Canarias en los últimos afios ha sido el diseflo y construcción del te1escopio IAC8O. Este requería del esfuerzo con junto en mec´nica, óptica y electrónica, lo que facilitó la estructuración y el crecimiento de los respectivos grupos de trabajo, que posteriormente se integraron en departamentos En su origen (1977), el telescopio IAC80 fue concebido como un sistema clásico tipo Cassegrain, con una razón focal F/i 1.3 para el sistema Casse grain y una razón focal F/20 para el sistema Coudé. Posteriormente, aunque se mantuvo la filosofia de que el sistema básico fuera el F/11.3, se consideró conveniente el diseño de secundarios para razones focales F/16 y F/32, y se eliminó el de F/20. Sin embargo, dada la importancia relativa que un foco estrictamente fotográfico tiene en un telescopio moderno, diseñado básicamente para fotometría fotoeléctrica y con un campo util mínimamente de 40 minutos de arco, se decídió Ilevar a cabo el diseño de un secundario F/8 con un sistema corrector de campo, pero que estuviera formado únicamente por lentes con superficies esféricas para que asl su construcción fuera posible en España ó en México. La creciente utilización de detectores bidimensionales para fines de investigación astron6mica y la viabilidad de que en un futuro cercano éstos tengan un área sensible cada vez mayor, hicieron atractiva la idea de tener diseñado un sistema corrector de campo para el foco primario (F/3), con un campo útil mínimo de un grado, y también con la limitante de que sus componentes tuvieron sólamente supérficies esféricas. Ambos diseños de los sis-temas correctores de campo se llevaron a cabo, en gran medida, como parte de un proyecto de colaboración e intercambio en el área de diseño y evaluación de sistemas ópticos.

  4. AULA virtual reality test as an attention measure: convergent validity with Conners' Continuous Performance Test.

    PubMed

    Díaz-Orueta, Unai; Garcia-López, Cristina; Crespo-Eguílaz, Nerea; Sánchez-Carpintero, Rocío; Climent, Gema; Narbona, Juan

    2014-01-01

    The majority of neuropsychological tests used to evaluate attention processes in children lack ecological validity. The AULA Nesplora (AULA) is a continuous performance test, developed in a virtual setting, very similar to a school classroom. The aim of the present study is to analyze the convergent validity between the AULA and the Continuous Performance Test (CPT) of Conners. The AULA and CPT were administered correlatively to 57 children, aged 6-16 years (26.3% female) with average cognitive ability (IQ mean = 100.56, SD = 10.38) who had a diagnosis of attention deficit/hyperactivity disorder (ADHD) according to DSM-IV-TR criteria. Spearman correlations analyses were conducted among the different variables. Significant correlations were observed between both tests in all the analyzed variables (omissions, commissions, reaction time, and variability of reaction time), including for those measures of the AULA based on different sensorial modalities, presentation of distractors, and task paradigms. Hence, convergent validity between both tests was confirmed. Moreover, the AULA showed differences by gender and correlation to Perceptual Reasoning and Working Memory indexes of the WISC-IV, supporting the relevance of IQ measures in the understanding of cognitive performance in ADHD. In addition, the AULA (but not Conners' CPT) was able to differentiate between ADHD children with and without pharmacological treatment for a wide range of measures related to inattention, impulsivity, processing speed, motor activity, and quality of attention focus. Additional measures and advantages of the AULA versus Conners' CPT are discussed.

  5. LIBS identification of pigments from Aula Leopoldina vault

    NASA Astrophysics Data System (ADS)

    Ostrowski, R.; Skrzeczanowski, W.; Marczak, J.; Sarzynski, A.

    2009-07-01

    Aula Leopoldina is the most representative, baroque hall in Wroclaw University. In 2008, LIBS measurements of paintings layers of Aula vault were done. LIBS spectra permitted identification of mineral pigments used for specific colors of painting layers. This identification could not be unambiguous in each case since simultaneous occurrence of elements that could be components of different pigments of the same color was observed in some samples. For example, in some red samples the presence of aluminum and iron was stated, and hence red ochre or Mars red could be used as a pigment. In other samples the cinnabar can be additionally responsible for red color. Similar problems were observed in case of blue pigments, where existence of copper may show that azurite was used, but the presence of aluminum, sodium, silicon and iron can point to application of ultramarine, Egyptian or Prussian blues. The greatest difficulties occurred during identification of white pigments. Because of presence of barium, zinc, lead and titanium, the potential pigments might be lithopone, barite, zinc white, lead white or titanium white. Final choice of the pigment is determined by the time of last renovation and this points out that the zinc white was used.

  6. [The Medical School of Campo Santana].

    PubMed

    Botelho, L da S

    1995-04-01

    The Medical School of Campo Santana was built on the site where the bullring once stood. It replaced the Medical-Surgical School of Lisbon, in the vicinity of S. José Hospital, which was in a state of impending ruin. Despite this concern, construction was slow and only twenty years after laying the first stone was it possible to begin lectures in this new building. It is a majestic edifice with contributions by the best artists of the era: panels by Veloso Salgado in the Actos Room, tiles by Jorge Colaço in Passos Perdidos, and paintings by Colombano in the Council Room. Reference is made to some historical events which took place in this building. With the transfer of medical studies to Santa Marta Hospital, the Medical School of Campo Santana suffered a period of neglect which ended with the founding of the Faculty of Medical Sciences of Lisbon in 1977.

  7. The IR facility of Campo Imperatore

    NASA Astrophysics Data System (ADS)

    Di Paola, Andrea

    The AZT-24 telescope is currently the most advanced telescope working at the Campo Imperatore Observatory and the only one with infrared instrumentation available on the italian soil. It is a 1.1m Ritchey-Cretien telescope equipped with a near infrared camera (1/2.5 μm) with the standard broad band filters (J,H,K,K'), some narrow band filters and grisms for low resolution spectroscopy. AZT-24 is controlled by an automatic software that allows remote operations and makes easier the survey programs by performing unattended observations on sequences of targets. At Campo Imperatore, AZT-24 is joined by an optical instrument, the Schmidt telescope, that widens the wavelength coverage accessible from one single site from 0.35 to 2.5 μm. The most relevant scientific results obtained during the two years of operation will be shortly illustrated.

  8. La implantacion del enfoque constructivista en el aula de ciencia: Estudio de caso multiple

    NASA Astrophysics Data System (ADS)

    Arroyo Betancourt, Luz I.

    Esta investigacion estudia la implantacion del enfoque constructivista en tres aulas de ciencia del contexto puertorriqueno. Se auscultaron las practicas educativas que utilizan maestras consideradas constructivistas y la correspondencia de sus practicas educativas con los elementos esenciales de la didactica que proponen los teoricos de los planteamientos constructivistas. Se ausculto, ademas, a que vision del enfoque constructivista responden las expresiones de las maestras acerca de su practica educativa y como compara con su quehacer, a la luz de los elementos esenciales de las visiones constructivistas piagetiana, social y radical. Se utilizo el diseno de estudio descriptivo de caso multiple. El estudio se baso en entrevistas a profundidad, revision de documentos y observacion no participativa a la sala de clases. El contexto fueron tres escuelas publicas de la Region Educativa de San Juan, una elemental, una intermedia y una superior. Los resultados confirmaron que la transicion hacia el enfoque constructivista es un proceso que toma tiempo, dedicacion y la participacion en adiestramientos y readiestramientos acerca del nuevo enfoque. Las maestras coinciden en la mayoria de las practicas educativas que utilizan para implantar el enfoque constructivista de ensenanza y difieren en algunas debido, probablemente, a que han tenido que adaptarlas a los correspondientes niveles de ensenanza: elemental, intermedio y superior. Dos de las maestras planifican por conceptos generadores, mientras que una de ellas planifica siguiendo la guia que recibe del Departamento de Educacion. Difieren ademas, en el enfasis que confieren al inquirir cientifico. Con relacion a la correspondencia entre la vision manifestada por las maestras a la luz de las visiones piagetiana, social y radical, aparentemente, las preguntas del protocolo de entrevistas no lograron evocar la informacion con suficiente profundidad, por lo que la investigadora tuvo que inferir las visiones de las

  9. Geology of petroleum in Campos basin, Brazil

    SciTech Connect

    Meister, E.M.

    1984-04-01

    A schematic model of oil generation, migration, accumulation, and alteration is presented for the Campos basin, a sedimentary province covering an area of nearly 31,000 km/sup 2/ (12,000 mi/sup 2/) offshore southeastern Brazil, where an estimated 1 billion m/sup 3/ (6.3 billion bbl) of oil in place has been discovered since 1974. Source rocks for this oil belong to the Lower Cretaceous Lagoa Feia Formation; oil generation probably started in the Miocene. At that time, a series of local windows opened in the regional evaporite seal at the top of the Lagoa Feia Formation and focused the upward escape of hydrocarbons, mainly along halokinetic fault surfaces. Reservoirs of Albian, Late Cretaceous, and Tertiary age were charged and their porosities enhanced by natural fracturing, solution, and/or grain rearrangement. Original oil (postulated range of 30/sup 0/-35/sup 0/ API gravity) underwent differentiation by migration, reflected in relative enrichment of aromatics and of the light /sup 12/C stable carbon isotope. Alteration of oil by water occurs if one of the two fluids in contact is allochthonous; bacterial alteration is important in low-temperature regimes. Oil entrapment is helped by hydrodynamic conditions, with the intake area of the Paraiba do Sul river delta supposedly playing an important part. Lopatin-type plots gave the first clue for establishing this model, which takes into account a large number of facts about the basin, such as well and seismic information, clay diagenesis, water and petroleum geochemistry, pressure data, and their geologic field relationships.

  10. 76 FR 6153 - Supplemental Environmental Impact Statement for the Proposed Campo Regional Landfill Project on...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-03

    ... Impact Statement for the Proposed Campo Regional Landfill Project on the Campo Indian Reservation, San... the proposed Campo Regional Landfill Project (Proposed Action) to be located on the Campo Indian... Landfill Project (Proposed Action). There is no Federal action of amended lease and amended...

  11. Studying the Jovian System with small telescopes: An activity at Aula EspaZio Gela UPV/EHU

    NASA Astrophysics Data System (ADS)

    del Río-Gaztelurrutia, T.; Sánchez-Lavega, A.; Hueso, R.

    2013-09-01

    We describe a learning activity performed at the Aula Espazio Gela UPV/EHU in which students of the Master of Space Science and Technology study the Jovian System and deduce some of its parameters using their own images.

  12. TUBERCULOSIS COMO ENFERMEDAD OCUPACIONAL

    PubMed Central

    Mendoza-Ticona, Alberto

    2014-01-01

    Existe evidencia suficiente para declarar a la tuberculosis como enfermedad ocupacional en diversos profesionales especialmente entre los trabajadores de salud. En el Perú están normados y reglamentados los derechos laborales inherentes a la tuberculosis como enfermedad ocupacional, como la cobertura por discapacidad temporal o permanente. Sin embargo, estos derechos aún no han sido suficientemente socializados. En este trabajo se presenta información sobre el riesgo de adquirir tuberculosis en el lugar de trabajo, se revisan las evidencias para declarar a la tuberculosis como enfermedad ocupacional en trabajadores de salud y se presenta la legislación peruana vigente al respecto. PMID:22858771

  13. Sistemas Correctores de Campo Para EL Telescopio Ritchey-Chretien UNAM212

    NASA Astrophysics Data System (ADS)

    Cobos, F. J.; Galan, M. J.

    1987-05-01

    El telescopio UNAM2l2 fue inaugurado hace siete años y concebido para trabajar en las razones focales: f/7.5, F/13.5, F/27 y F/98. El diseño Ritchey-Chretién corresponde a la razón focal F/7.5 y el foco primario (F/2.286) no se consideró como utilizable para fotografía directa. En el Instituto de Astronomía de la UNAM, se diseñó y construyó un sistema corrector de campo para la razón focal F/7.5, que actualmente está en funcionamiento. Dentro de un programa de colaboración en diseflo y evaluación de sistemas ópticos, entre el Instituto de Astrofísica de Canarias y el Instituto de Astronomía de la UNAM, decidimos intentar el diseño de una correctora de campo para el foco primario del tȩlescopio UNAM212 bajo la consideración de que no son insalvables los problemas que implicaría su instalación y de que es muy posible que, en un futuro relativamente cercano, podamom tener un detector bidimenmional tipo Mepsicrón cuya área sensible haga tentadora la idea de construir la cámara directa para foco primario

  14. "Ask Argonne" - Edwin Campos, Research Meteorologist, Part 2

    ScienceCinema

    Edwin Campos

    2016-07-12

    Argonne's Edwin Campos has for the last two decades studied weather, and in particular, clouds. His research can help make solar power a more viable option for the U.S. and the world. In this video, Dr. Campos answers questions that were submitted by the public in response to his introductory video: http://www.youtube.com/watch?v=pfdoHz.... We will be posting a new "Ask Argonne" video every other month, on various topics. Keep an eye out for your next opportunity to submit a question and see if it gets answered - and if you get a shout-out on camera.

  15. "Ask Argonne" - Edwin Campos, Research Meteorologist, Part 2

    SciTech Connect

    Edwin Campos

    2013-05-23

    Argonne's Edwin Campos has for the last two decades studied weather, and in particular, clouds. His research can help make solar power a more viable option for the U.S. and the world. In this video, Dr. Campos answers questions that were submitted by the public in response to his introductory video: http://www.youtube.com/watch?v=pfdoHz.... We will be posting a new "Ask Argonne" video every other month, on various topics. Keep an eye out for your next opportunity to submit a question and see if it gets answered - and if you get a shout-out on camera.

  16. Fotometría CCD en el campo del cúmulo abierto Ruprecht 58

    NASA Astrophysics Data System (ADS)

    Giorgi, E. E.; Vázquez, R. A.; Seggewiss, W.; Ostrov, P.; Solivella, G. R.

    La región de Vela-Puppis contiene varios cúmulos cuyo estudio puede brindarnos información acerca de la cinemática y el estado evolutivo de la población estelar en las zonas externas del disco galáctico. A través de observaciones CCD en los filtros UBV en el campo del cúmulo abierto Ruprecht 58 (α2000= 8h 14m 41s, δ2000=-31o 57'), se han determinado por primera vez los parámetros fundamentales de este cúmulo tales como distancia, enrojecimiento y edad. Se analiza también la estructura de su secuencia principal y la presencia de gigantes y binarias.

  17. Cosmogenic Radionuclides in the Campo Del Cielo Iron Meteorite

    NASA Technical Reports Server (NTRS)

    Liberman, R. G.; FernandezNiello, J. O.; Reedy, R. C.; Fifield, L. K.; diTada, M. L.

    2001-01-01

    Cosmogenic Be-10, Al-26, Cl-36, Ca-41, and Ni-59 were measured in the Campo del Cielo iron meteorite. Our results led us to conclude that the pre-atmospheric radius might have been approximately 2 m. Comparisons with other big bodies are also presented. Additional information is contained in the original extended abstract.

  18. Colonial Memory and the Crime of Rhetoric: Pedro Albizu Campos

    ERIC Educational Resources Information Center

    Villanueva, Victor

    2009-01-01

    Dr. Albizu Campos was a Harvard-educated Puerto Rican politician who was sentenced to eighty years of imprisonment for what he said--sedition. He was called "el Maestro," a powerful speaker, with thousands gathering to listen to his deliberative rhetoric for freedom. He urged the people to reclaim their cultural history and national…

  19. Helping enhances productivity in campo flicker (Colaptes campestris) cooperative groups.

    PubMed

    Dias, Raphael Igor; Webster, Michael S; Macedo, Regina H

    2015-06-01

    Reproductive adults in many bird species are assisted by non-breeding auxiliary helpers at the nest, yet the impact of auxiliaries on reproduction is variable and not always obvious. In this study, we tested Hamilton's rule and evaluated the effect of auxiliaries on productivity in the facultative cooperative breeder campo flicker (Colaptes campestris campestris). Campo flickers have a variable mating system, with some groups having auxiliaries and others lacking them (i.e., unassisted pairs). Most auxiliaries are closely related to the breeding pair (primary auxiliaries), but some auxiliaries (secondary auxiliaries) are unrelated females that joined established groups. We found no effect of breeder quality (body condition) or territory quality (food availability) on group productivity, but the presence of auxiliaries increased the number of fledglings produced relative to unassisted pairs. Nonetheless, the indirect benefit of helping was small and did not outweigh the costs of delayed breeding and so seemed insufficient to explain the evolution of cooperative breeding in campo flickers. We concluded that some ecological constraints must limit dispersal or independent breeding, making staying in the group a "best-of-a-bad-job" situation for auxiliaries.

  20. Helping enhances productivity in campo flicker ( Colaptes campestris) cooperative groups

    NASA Astrophysics Data System (ADS)

    Dias, Raphael Igor; Webster, Michael S.; Macedo, Regina H.

    2015-06-01

    Reproductive adults in many bird species are assisted by non-breeding auxiliary helpers at the nest, yet the impact of auxiliaries on reproduction is variable and not always obvious. In this study, we tested Hamilton's rule and evaluated the effect of auxiliaries on productivity in the facultative cooperative breeder campo flicker ( Colaptes campestris campestris). Campo flickers have a variable mating system, with some groups having auxiliaries and others lacking them (i.e., unassisted pairs). Most auxiliaries are closely related to the breeding pair (primary auxiliaries), but some auxiliaries (secondary auxiliaries) are unrelated females that joined established groups. We found no effect of breeder quality (body condition) or territory quality (food availability) on group productivity, but the presence of auxiliaries increased the number of fledglings produced relative to unassisted pairs. Nonetheless, the indirect benefit of helping was small and did not outweigh the costs of delayed breeding and so seemed insufficient to explain the evolution of cooperative breeding in campo flickers. We concluded that some ecological constraints must limit dispersal or independent breeding, making staying in the group a "best-of-a-bad-job" situation for auxiliaries.

  1. The Aula Espazio Gela Observatory: A tool for Solar System Education and Outreach

    NASA Astrophysics Data System (ADS)

    Rojas, J. F.; Perez-Hoyos, S.; Hueso, R.; Mendikoa, I.; Sanchez-Lavega, A.

    2011-10-01

    We present a summary of the activities undertaken over the first year of operations of the "Aula Espazio Gela Observatory", with teaching and astronomy outreach purposes. The observatory belongs to the Universidad del País Vasco and is a fundamental part of the "Master en Ciencia y Tecnología Espacial" (Space Science and Technology master). It is an urban observatory with the dome located on the roof of the School of Engineering at the Universidad del Pais Vasco in Bilbao (Spain).

  2. Aula Verde: art as experience in community-based environmental education.

    PubMed

    Abarca, Marco A

    2010-01-01

    After winning a class-action lawsuit against unconstitutional prison conditions in Puerto Rico, Marco Abarca managed to direct part of the fine monies accumulated throughout years of litigation toward an investment that would improve the living conditions in one of the largest and poorest housing projects in Puerto Rico. With the participation of parolees and probationers, he began to transform a mosquito-infested badland into a natural haven. Then, with the help of science educators, the group designed a workshop for elementary school children on urban ecology. As the participants organized, what developed was a community-based, self-employed enterprise known as Aula Verde.

  3. IR and Optical Observations of GRB from Campo Imperatore

    NASA Astrophysics Data System (ADS)

    Speziali, R.; D'Alessio, F.; Antonelli, L. A.; Paola, A. Di; Burderi, L.; Fiore, F.; Israel, G.; Lorenzetti, D.; Pedichini, F.; Stella, L.; Vitali, F.

    In this poster we present a description of the Campo Imperatore Observatory facilities, suitable for very fast reaction to GRB triggers and multiwavelength observations. Two complementary instruments are available in the Observatory: the AZT-24 (1.1m Ritchey Cretien equipped with the NIR camera SWIRCAM), one of the few IR telescope working in the northern emisphere, and a Schmidt telescope (60/90/180 cm, equipped with a 2Kx2K back illuminated CCD). The IR detection of the GRB 000926, obtained with the AZT-24, is also reported.

  4. [Life and work at the petroleum industry in Campos Basin].

    PubMed

    Leite, Rose Mery dos Santos Costa

    2009-01-01

    In this paper we detach the subject of confinement as a central axle in the activity at maritime oil platforms of Campos Basin, in north region of the Rio de Janeiro state. This work reality that determines for offshore workers, as they are known, a rupture between two different moments in there lives: the period of fourteen days in the sea and the life in land per twenty one days. We adopt as material empiricist, the research carried out on this universe, detaching here the way as these professionals understand the conditions of confined work in which they are submitted.

  5. The Aula Espazio and the Master of Space Science & Technology in the Universidad del País Vasco (Spain)

    NASA Astrophysics Data System (ADS)

    Sanchez-Lavega, A.; Pérez-Hoyos, S.; Hueso, R.; Del Río-Gaztelurrutia, T.; Oleaga, A.

    2010-05-01

    We present the Aula Espazio, a facility dedicated to teach Space Sciences and Technology at Master and Doctorate level at the Universidad del País Vasco(Spain)and to promote development in this field in both the public and private sectors. A new University Observatory which homes a 50 cm telescope, a solar telescope and other instruments is also associated to the Aula. The most important activities of the Aula are developed within the context of the Master in Space Science and Technology offered in the Engineering School of Bilbao (Spain) which is designed to provide a link between basic research and space technology. The Master in Space Science and Technology is a one year master designed to give an overall view of the science and technology involved in space projects. It is open for graduates in Engineering and graduates in Physics. This master covers both the basic science aspects of space science and the technological development that space activities require. It is a multidisciplinary master with several University departments participating (Applied Physics, Theoretical Physics, Systems Engineering and Automatic control and Electronics and Telecommunications) and with important contributions from companies involved in space technology and Spanish public organisms in the space area. More information at: http://www.ehu.es/aulaespazio/. Acknowledgements: The Aula Espazio is funded by the Diputación Foral de Bizkaia/Bizkaiko Foru Aldundia, the Escuela Ténica Superior de Ingeniería de Bilbao and the Universidad del País Vasco.

  6. The Campo Imperatore Near Earth Object Survey (CINEOS)

    NASA Astrophysics Data System (ADS)

    Boattini, Andrea; D'Abramo, Germano; Valsecchi, Giovanni B.; Carusi, Andrea; di Paola, Andrea; Bernardi, Fabrizio; Jedicke, Robert; Harris, Alan W.; Dotto, Elisabetta; de Luise, Fiore; Perna, Davide; Leoni, Riccardo

    2007-06-01

    The Campo Imperatore Near Earth Object Survey (CINEOS) is an Italian survey dedicated to the search and follow-up of Near Earth Objects (NEOs). It is operated with the 90 cm f/3 Schmidt telescope at the Campo Imperatore of the Rome Astronomical Observatory (INAF-OAR) as a joint project with the Istituto di Astrofisica Spaziale and Fisica Cosmica (INAF-IASF) in Rome. Since the end of 2001 CINEOS has covered about 4,250 sq. deg to 20th magnitude in the course of about 160 nights. This effort led to the discovery of 7 Near Earth Asteroids (NEAs), 1 comet (167P/CINEOS; a member of the Centaur group) and a few other unusual objects including 2004 XH50 with a unique comet-like orbit. CINEOS has also contributed almost 2,200 preliminary designations and over 30,000 detections to the Minor Planet Center. About 20% of the survey effort was carried out at low solar elongations (LSE), although no object with an orbit interior (Inner Earth Objects, IEO class) or nearly interior to the Earth (Aten class) was found. The work at LSE was, however, very important to test survey strategies implemented with larger telescopes. We also provide the results of a CINEOS simulation on a reliable NEO population model based on the results of two larger scale surveys, Spacewatch and LINEAR.

  7. "Ask Argonne" - Edwin Campos, Research Meteorologist, Part 1

    SciTech Connect

    Edwin Campos

    2013-05-08

    Dr. Edwin Campos is a Research Meteorologist at Argonne National Laboratory. For the last two decades, he has studied weather, and in particular, clouds. Clouds are one of the most uncertain variables in climate predictions and are often related to transportation hazards. Clouds can also impact world-class sporting events like the Olympics. You may have questions about the role of clouds, or weather, on our daily lives. How is severe weather monitored for airports? What is the impact of clouds and wind on the generation of electricity? One of the projects Edwin is working on is short-term forecasting as it relates to solar electricity. For this, Edwin's team is partnering with industry and academia to study new ways of forecasting clouds, delivering technologies that will allow the incorporation of more solar power into the electric grid. Post a question for Edwin as a comment below, and it might get answered in the follow-up video we'll post in the next few weeks.

  8. "Ask Argonne" - Edwin Campos, Research Meteorologist, Part 1

    ScienceCinema

    Edwin Campos

    2016-07-12

    Dr. Edwin Campos is a Research Meteorologist at Argonne National Laboratory. For the last two decades, he has studied weather, and in particular, clouds. Clouds are one of the most uncertain variables in climate predictions and are often related to transportation hazards. Clouds can also impact world-class sporting events like the Olympics. You may have questions about the role of clouds, or weather, on our daily lives. How is severe weather monitored for airports? What is the impact of clouds and wind on the generation of electricity? One of the projects Edwin is working on is short-term forecasting as it relates to solar electricity. For this, Edwin's team is partnering with industry and academia to study new ways of forecasting clouds, delivering technologies that will allow the incorporation of more solar power into the electric grid. Post a question for Edwin as a comment below, and it might get answered in the follow-up video we'll post in the next few weeks.

  9. ``Campo del Cielo'' Meteorites: Astronomical Heritage and Cultural Colonialism

    NASA Astrophysics Data System (ADS)

    López, Alejandro Martín; Altman, Agustina

    2012-09-01

    In the province of Chaco, Argentina, there is a very unique dispersion of metallic meteorites called ``Campo del Cielo''. One of the meteoric fragments of this dispersion, the meteorite called ``El Chaco'', consisting of 37 tons, is the second heaviest in the world. These meteorites are of great importance to the worldview of the Moqoit, aboriginal people that inhabit this region. For the local Creole population the meteorites are also relevant, that's why they have being cited in numerous documents and reports since the colonial period. During the first months of 2012, two Argentine artists and the Artistic Director of the German contemporary art exhibition called dOCUMENTA (13) tried to move ``El Chaco'' meteorite to Germany in order to exhibit it as an artistic object. Due to the fact that moving the meteorite could have a negative impact according to the Moqoit cosmology and that they were not able to participate in the decision they begun a manifestation against the movement of El Chaco. The opposition made by aboriginal communities and experts in cultural astronomy was able to stop the transfer. The whole process and its impact on the local community have promoted a deep discussion about art, science and cultural colonialism. In this paper we aim to address this debate and its consequences. This will allow us to think about contemporary forms of colonialism that are hidden in many scientific and artistic projects. Furthermore, we aim to debate about the most effective ways of protecting astronomical heritage in the Third World.

  10. Three-Dimensional Oil Dispersion Model in Campos basin, Brazil.

    PubMed

    Oliveira, Bernardo Lopes Almeida de; Netto, Theodoro Antoun; Assad, Luiz Paulo de Freitas

    2017-02-22

    This paper presents the physical and mathematical formulation of a three-dimensional oil dispersion model that calculates the trajectory from the seafloor to the sea surface, its assumptions and constraints. It was developed by researchers that are familiar with oil spill dispersion and mathematical analysis. Oil dispersion is calculated through two computational routines. The first calculates the vertical dispersion along the water column and resamples the droplets when the oil reaches the surface. The second calculates the surface displacement of the spill. This model is based on the Eulerian Approach, and it uses numerical solution schemes in time and in space to solve the equation for advective-diffusive transport. A case study based on an actual accident that happened in the Campos Basin, in Rio de Janeiro State, considering the instant spill of 1.000 m(3) was used to evaluate the proposed model. After calculating the vertical transport, it was estimated that the area covered by the oil spill on the surface was about 35.685 m². After calculating the dispersion at the surface, the plume area was estimated as 20% of the initial area, resulting in a final area of 28.548 m².

  11. Classrooms in Peace Within Violent Contexts: Field Evaluation of Aulas en Paz in Colombia.

    PubMed

    Chaux, Enrique; Barrera, Madeleine; Molano, Andrés; Velásquez, Ana María; Castellanos, Melisa; Chaparro, Maria Paula; Bustamante, Andrea

    2017-02-11

    Classrooms in Peace (Aulas en Paz) is an elementary school-based multicomponent program for prevention of aggression and promotion of peaceful relationships. Inspired by international programs and socio-emotional research, it includes (1) a classroom universal curriculum, (2) parent workshops and home visits to parents of the 10% most aggressive children, and (3) extracurricular peer groups of two aggressive and four prosocial children. Activities seek to promote socio-emotional competencies such as empathy, anger management, creative generation of alternatives, and assertiveness. A 2-year quasi-experimental evaluation was conducted with 1154 students from 55 classrooms of seven public schools located in neighborhoods with the presence of youth gangs, drug cartels, and high levels of community violence in two Colombian cities. Despite several implementation (e.g., about half of the activities were not implemented) and evaluation (e.g., randomization problems, large number of missing data, and changes between treatment and control groups) challenges, positive results were found in prosocial behavior and in reduction of aggressive behavior, according to teacher reports, and in assertiveness and reduction of verbal victimization, according to student reports. Furthermore, implementation cost (25 US dollars per student per year) was very low compared to other programs in developed countries. This study shows that the Classrooms in Peace program has an important potential to generate positive results and highlights the challenges of implementing and evaluating prevention programs in highly violent environments.

  12. 76 FR 29261 - Notice of Intent To Prepare an Environmental Impact Statement for the Proposed Campo Wind Energy...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-20

    ... Campo Wind Energy Project, San Diego County, CA AGENCY: Bureau of Indian Affairs, Interior. ACTION... necessary for preparing an Environmental Impact Statement (EIS) for the proposed Campo Shu'luuk Wind Project... San Diego, California. Construction of the Shu'luuk Wind Project within the Campo Reservation...

  13. Energy and Mass Balance At Gran Campo Nevado, Patagonia, Chile

    NASA Astrophysics Data System (ADS)

    Schneider, C.; Kilian, R.; Casassa, G.

    The Gran Campo Nevado (GCN) Ice Cap on Peninsula Muñoz Gamero, Chile, is lo- cated in the southernmost part of the Patagonian Andes at 53S. It comprises an ice cap and numerous outlet glaciers which mostly end in proglacial lakes at sea level. The total ice covered area sums up to approximately 250 km2. GCN forms the only major ice body between the Southern Patagonian Icefield and the Street of Magallan. Its almost unique location in the zone of the all-year westerlies makes it a region of key interest in terms of glacier and climate change studies of the westwind zone of the Southern Hemisphere. Mean annual temperature of approximately +5C at sea level and high precipitation of about 8.000 mm per year lead to an extreme turn-over of ice mass from the accumulation area of the GCN Ice Cap to the ablation areas of the outlet glaciers. Since October 1999 an automated weather station (AWS) is run continuously in the area at Bahia Bahamondes for monitoring climate parameters. From February to April 2000 an additional AWS was operated on Glaciar Lengua a small outlet glacier of GCN to the north-west. Ablation has been measured at stakes during the same pe- riod. The aim of this study, was to obtain point energy and mass balance on Glaciar Lengua. The work was conducted as part of the international and interdisciplinary working group SGran Campo NevadoT and supported by the German Research Foun- & cedil;dation (DFG). Energy balance was calculated using the bulk approach formulas and calibrated to the measured ablation. It turns out, that sensible heat transfer is the major contribution to the energy balance. Since high cloud cover rates prevail, air tempera- ture is the key factor for the energy balance of the glacier. Despite high rain fall rates, energy input from rain fall is of only minor importance to the overall energy balance. From the energy balance computed, it was possible to derive summer-time degree-day factors for Glaciar Lengua. With data from the nearby

  14. Salt tectonics and oil accumulation in Campos basin, offshore Brazil

    SciTech Connect

    Figueiredo, A.M.F.; Pereira, M.J.; Mohriak, W.U.; Gaglianone, P.C.; Trinidade, L.A.F.

    1985-02-01

    Salt tectonics were responsible for the development of optimum conditions for accumulation of large hydrocarbon reserves in Campos basin. The salt movements, triggered by basin tilting and differential loading, initially formed low-relief salt pillows that controlled the porous facies of the shallow-water Macae limestones. The continuous evolution of halokinetic processes produced growth faults, rollover crests, and faulted anticlines. Upper Cretaceous turbidite sandstones were channelized in the downthrown blocks of growth faults. Salt-collapse, residual, and relief-inversion features were formed in areas where the salt was sufficiently thick. The oil, generated in the Neocomian shales of Lagoa Feia Formation, migrated to upper formations through normal faults associated with the rift phase, stratigraphic conduits such as porous rocks and regional unconformities, and gaps created by salt flowage in the Aptian evaporite section. Oil migration to the post-salt rocks was favored by active growth faults and by the presence of a regional unconformity developed at the Cretaceous-Tertiary boundary and covered by turbidite sheet sands. The oils underwent progressive alteration along their paths to the post-salt reservoirs. Oil-oil and oil-source rock correlations suggest that the hydrocarbons trapped in many diverse plays, although affected by bacterial degradation and water washing, belong to only one oil family. The oil degradation was probably enhanced by meteoric water invasions during Tertiary low stands of sea level in areas close to the paleocoastline. These phenomena resulted in large amounts of oil becoming heavier and enriched in sulfur, resins, asphaltenes, and cycloparaffins.

  15. Astronomy in the Classroom: Why? (Spanish Title: Astronomía en la Clase: ¿Por Qué?) Astronomia na Sala de Aula: Por Quê?

    NASA Astrophysics Data System (ADS)

    Daros Gama, Leandro; Bagdonas Henrique, Alexandre

    2010-07-01

    There are many discussions about the relevance of the topics covered in classes. One subject in particular is the focus of this essay: astronomy. In what sense and to what extent it would be worth to teach it in science or other kind of classes? In this paper we discuss some aspects of the advantages of dealing with this area of knowledge in schools, taking into account the epistemological and axiological dimensions of astronomy, in light of the vision of science as an intelligent dialogue with the world (Bachelard), in addition to the "problematization" knowledge of Paulo Freire. We propose that in fact the Astronomy does not need to be seen as just a new set of contents to be taught, but appears as a set of motivational contents for historical-philosophical discussions, and permit the discussion of concepts of other disciplines. Numerosas discusiones se están llevando a cabo acerca de la pertinencia de los temas tradicionalmente tratados en las clases. Uno de los temas, en particular, es el foco de este ensayo: la astronomía. ¿En qué sentido y en qué medida sería conveniente tratarla en clase, ya sea en clases de ciencias naturales, específicamente en las de astronomía o asignaturas afines? Elaboramos en este artículo algunos aspectos de las ventajas de tratar esta área del conocimiento en las escuelas, teniendo en cuenta las dimensiones epistemológica y axiológica de la astronomía, a la luz de la visión de la ciencia como un diálogo inteligente con el mundo (Bachelard), además de la propuesta del conocimiento "problematizador" de Paulo Freire. Proponemos que en realidad la astronomía no tiene por qué ser vista sólo como un nuevo conjunto de contenidos que se enseñan, sino que aparece como un conjunto de temas de motivación para el debate histórico-filosófico y para permitir la discusión de los conceptos típicos de otras disciplinas. Muitas discussões vêm acontecendo sobre a relevância dos temas abordados em sala de aula. Um tema, em

  16. [Efficacy of lisdexamphetamine to improve the behavioural and cognitive symptoms of attention deficit hyperactivity disorder: treatment monitored by means of the AULA Nesplora virtual reality test].

    PubMed

    Diaz-Orueta, U; Fernandez-Fernandez, M A; Morillo-Rojas, M D; Climent, G

    2016-07-01

    Introduccion. La lisdexanfetamina (LDX) es el farmaco para el trastorno por deficit de atencion/hiperactividad (TDAH) con mayor volumen de investigacion de los ultimos años. No obstante, no hay estudios que certifiquen su utilidad para la mejoria del funcionamiento cognitivo en el TDAH. Objetivo. Evaluar la eficacia de la LDX en la mejora sintomatica conductual y cognitiva en un grupo de pacientes con TDAH. Dicha eficacia fue medida mediante la administracion del test AULA Nesplora de realidad virtual antes de la prescripcion del tratamiento farmacologico y despues del tratamiento con LDX. Pacientes y metodos. La muestra estaba compuesta por 85 pacientes de 6-16 años, con diagnostico clinico de TDAH y que asistian a tratamiento en una consulta de neuropediatria. Todos los pacientes iniciaron el tratamiento farmacologico con la correspondiente dosis de LDX tras la entrevista clinica y la primera administracion del test AULA. Tras un tratamiento medio de 7,5 meses, se les administro AULA nuevamente y se valoro el progreso del tratamiento farmacologico sobre la sintomatologia cognitiva y motora. Resultados. Se apreciaron mejorias muy significativas en la atencion selectiva y sostenida, la calidad del foco atencional y la hiperactividad, mejorias moderadas en la impulsividad, y una incidencia casi nula en la velocidad de procesamiento. Conclusiones. La LDX constituye un tratamiento adecuado para la mejora sustancial de la atencion e hiperactividad, y dicha mejora puede monitorizarse de forma precisa mediante el test de realidad virtual AULA.

  17. Using the Spanish Online Resource "Aula Virtual de Espanol" (AVE) to Promote a Blended Teaching Approach in High School Spanish Language Classrooms

    ERIC Educational Resources Information Center

    Pellerin, Martine; Montes, Carlos Soler

    2012-01-01

    The study explores the effectiveness of the implementation of blended teaching (BT) by combining the Spanish online resource "Aula Virtual de Espanol" (AVE) with the face-to-face (F2F) delivery approach in second language Spanish programs in two high schools in Alberta, Canada. Findings demonstrate the effectiveness of combining the…

  18. The Aula EspaZio Gela and the Master of Space Science and Technology in the Universidad Del País Vasco (University of the Basque Country)

    ERIC Educational Resources Information Center

    Sánchez-Lavega, Agustín; Pérez-Hoyos, Santiago; Hueso, Ricardo; del Río-Gaztelurrutia, Teresa; Oleaga, Alberto

    2014-01-01

    We present the Aula EspaZio Gela, a facility dedicated to teaching Space Science and Technology at the master and doctorate level at the University of the Basque Country (Spain), and to promoting the development of this field in both public and private sectors. The one-year master's degree in Space Science and Technology (60 ECTS (European Credit…

  19. Four new species of Polycirrus Grube, 1850 (Polychaeta: Terebellidae) from Campos Basin, southeastern Brazil.

    PubMed

    Carrerette, Orlemir; Nogueira, João Miguel De Matos

    2013-01-01

    Four new species of Polycirrus were collected at the Campos Basin, state of Rio de Janeiro, during a survey coordinated by CENPES/PETROBRAS under the scope of the project, "Environmental Heterogeneity in the Campos Basin". These species are P. nonatoi sp. nov., P. papillosus sp. nov., P. breviuncinatus sp. nov., and P. habitats sp. nov. All these species are herein described and compared with the morphologically most similar congeners. In addition, a key is provided for the identification of the species of Polycirrus which have been originally described for the Brazilian coast.

  20. 75 FR 8986 - Draft Supplemental Environmental Impact Statement for the Proposed Campo Regional Landfill...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-26

    ... Please include your name, return address, and the caption ``DSEIS, Campo Solid Waste Management Project... of constructing and operating a solid waste disposal facility. The solid waste disposal facility... facilities. The proposed Class III (non-hazardous) solid waste landfill would occupy approximately 400...

  1. 78 FR 34373 - Campo Verde Solar, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-07

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Campo Verde Solar, LLC; Supplemental Notice That Initial Market- Based Rate...-referenced proceeding of Campo Verde Solar, LLC's application for market-based rate authority, with...

  2. Como Lo Hago Yo: Myelomeningocele

    PubMed Central

    Lazareff, Jorge

    2014-01-01

    Fortificación con ádico fólico es efectiva, pero aún falta conciencia en los jóvenes. La legalidad del aborto aumenta la importancia de la consulta prenatal. Realizo la cirugía bajo microcoscopio por razones didácticas. Irrigación continua para reducir la temperatura del tejido. Trato a la plaqueta como tejido viable. No suturo la plaqueta. No cierro músculo. ATB por una semana después de cirugía. Hidrocefalia: Válvula en todos los casos de ventriculomegalia. Médula anclada: Desanclar una sola vez. Chiari II: Revisar la válvula. Incluir en el seguimiento rendimiento escolar, puede indicar obstrucción de la válvula o médula anclada. PMID:24791217

  3. Periodogram Analysis on Solar Activities Based on El Campo Solar Radar Observation Data

    NASA Astrophysics Data System (ADS)

    Lin, Ye; Zhi-ning, Qu; Min, Wang; Guan-nan, Gao; Jun, Lin; Zhi-chun, Duan

    2016-10-01

    Solar radar can transmit radar waves toward the Sun actively at a specific waveband and receive the reflected waves. By analyzing the echoes, we can obtain the information of motion, magnetic field, and other properties of the solar atmosphere. The El Campo solar radar has done regular observations on the solar corona for 8 years from 1961 to 1969, to trace the variation of solar activities. We have made a periodicity analysis on the obtained data with the Lomb-Scargle periodogram algorithm, and found that there are the 200 day and 540 day periods existed in the variation of the measured solar radar cross section. In addition, we have selected the larger radar cross sections (≥ 20σ⊙) to compare with the Dst indexes. Finally, we have summarized the El Campo solar radar experiment and give a prospect for the future development of the solar radar observation.

  4. Vascular plant community composition from the campos rupestres of the Itacolomi State Park, Brazil

    PubMed Central

    Leyh, Werner; Miazaki, Angela S.; Meira-Neto, João A.A.

    2015-01-01

    Abstract Campos rupestres are rare and endangered ecosystems that accommodate a species-rich flora with a high degree of endemism. Here, we make available a dataset from phytosociological surveys carried out in the Itacolomi State Park, Minas Gerais, southeastern Brazil. All species in a total of 30 plots of 10 x 10 m from two study sites were sampled. Their cardinality, a combination of cover and abundance, was estimated. Altogether, we registered occurrences from 161 different taxa from 114 genera and 47 families. The families with the most species were Poaceae and Asteraceae, followed by Cyperaceae. Abiotic descriptions, including soil properties such as type, acidity, nutrient or aluminum availability, cation exchange capacity, and saturation of bases, as well as the percentage of rocky outcrops and the mean inclination for each plot, are given. This dataset provides unique insights into the campo rupestre vegetation, its specific environment and the distribution of its diversity. PMID:25829858

  5. Preliminary statistical studies concerning the Campos RJ sugar cane area, using LANDSAT imagery and aerial photographs

    NASA Technical Reports Server (NTRS)

    Parada, N. D. J. (Principal Investigator); Costa, S. R. X.; Paiao, L. B. F.; Mendonca, F. J.; Shimabukuro, Y. E.; Duarte, V.

    1983-01-01

    The two phase sampling technique was applied to estimate the area cultivated with sugar cane in an approximately 984 sq km pilot region of Campos. Correlation between existing aerial photography and LANDSAT data was used. The two phase sampling technique corresponded to 99.6% of the results obtained by aerial photography, taken as ground truth. This estimate has a standard deviation of 225 ha, which constitutes a coefficient of variation of 0.6%.

  6. Cheirimedon foscae sp. nov. (Amphipoda: Lysianassidae: Tryphosinae) from the deep sea Campos Basin, Southwestern Atlantic Ocean.

    PubMed

    Siqueira, Silvana Gomes L; Serejo, Cristiana S

    2014-10-15

    A new species of lysianassid amphipod belonging to the genus Cheirimedon was collected on the continental slope of the Campos Basin, the largest oil reserve in Brazilian waters. This is the first record of the genus Cheirimedon from the Atlantic Ocean, which was previously restricted to the Antarctic and Tasmanian sea. The new species is fully illustrated and compared with related species. Additionally, a world key to the Cheirimedon species is provided. 

  7. Infrared inspection applied to offshore platforms: Petrobras experience at Campos Basin

    NASA Astrophysics Data System (ADS)

    Verdini, Edson A.; Veratti, Attilio B.

    2002-03-01

    Bacia de Campos (Rio de Janeiro - Brazil) is one of the biggest offshore petroleum fields in the world today. In June 2001, Bacia de Campos, having more than 490 oil wells, 34 offshore platforms and 7 modified ships in operation, reached 1,3 million barrels/day. If compared to OPEP countries only nine of them got an average production higher than 1 million barrels/day in 2000, which means it can be placed on the 10th position in the rank of oil producers. In this context this work aims not only to show the results achieved within the introduction of thermographic inspections in offshore oil production (platforms and ships), but also the financial results (ROI - Return of Investment) considering the use of this particular technique. Bacia de Campos got a ROI around 7 million dollars in the last 4 years, which means a hundred times higher than the total cost of thermographic services in the same period. As far as we know this is one of the best results already reported in the world. We also present the methodology applied to analyze thermal anomalies in electrical components and data management software, including advanced Digital Reports sent via Internet.

  8. The Aula Espazio Observatory At The Universidad Del Pais Vasco (Spain): Planetary Observations For Graduate And Undergraduate Students

    NASA Astrophysics Data System (ADS)

    Perez-Hoyos, Santiago; Sanchez-Lavega, A.; Hueso, R.; Rojas, J. F.

    2010-10-01

    The Aula Espazio Gela is a facility at the School of Technical Engineering of the Universidad del Pais Vasco (Bilbao, Spain) dedicated to the education of undergarduated and gratuated students in the research and technology of space science activities. It also promotes the collaboration between the University and industrial spatial sector. One of the main elements of this facility is an astronomical observatory that is oriented to the activities of the students of the Master in Space Science and Technology. The main instrument is a 50 cm aperture Dall-Kirham telescope with equatorial mount completely robotized that includes different CCD cameras. Here we present some of the projects developed by graduate and under-graduate students in the field of the solar system. Explicitly we present some studies dedicated to the studies of planetary atmospheres and to acquire skills on the software management of planetary images. Aknowledgements: This project is supported by the Dpto. Innovación y Promoción Económica de la Diputación Foral de Bizkaia (Basque Country).

  9. One project of Educational Innovation applying news Information and Communications Technologies (ICT): CyberAula 2.0

    NASA Astrophysics Data System (ADS)

    Mendiola, M. A.; Aguado, P. L.; Espejo, R.

    2012-04-01

    The main objective of the CyberAula 2.0 project is to support, record and validate videoconferencing and lecture recording services by means the integration of the Polytechnic University of Madrid (UPM) Moodle Platform with both the Global Plaza platform and Isabel videoconference tool. Each class session is broadcast on the Internet and then recorded, enabling geographically distant students to participate in on-campus classes. All the software used in the project is open source. The videoconferencing tool that we have used is called Isabel and the web platform to schedule, perform, stream, record and publish the videoconferences automatically is called GlobalPlaza. Both of them have been developed at UPM (Universidad Politécnica de Madrid) and are specifically designed for educational purposes. Each class session is broadcasted on the Internet and recorded, enabling geographically distant students to participate live in on-campus classes with questions through a chat tool or through the same videoconference. In order to provide educational support to GlobalPlaza, the CyberAula 2.0 project has been proposed. GlobalPlaza (Barra et al., 2011) is the web platform to schedule, perform, stream, record and publish videoconferences automatically. It is integrated with the videoconferencing tool called Isabel (Quemada et al, 2005), which is a real-time collaboration tool for the Internet, which supports advanced collaborative web/videoconferencing with application sharing and TV like media integration. Both of them are open source solutions which have been developed at our university. GlobalPlaza is a web application developed in the context of the GLOBAL project, a research project supported by the European Commission's seventh framework program. Students can review the recording lectures when needed through Moodle. In this paper we present the project developed at the Escuela Técnica Superior de Ingenieros Agrónomos (ETSIA), Secondary Cycle free

  10. Different Cultures in Astronomy Education and Their Meanings in the Classroom. (Spanish Title: Las Diferentes Culturas en la Educación en Astronomía y Sus Significados EN EL Aula. ) As Diferentes Culturas na Educação em Astronomia E Seus Significados em Sala de Aula

    NASA Astrophysics Data System (ADS)

    Pereira de Barros, Vicente; Bovolenta Ovigli, Daniel Fernando

    2014-12-01

    el trabajo con Astronomía(s) en la clase. Se observó que los participantes todavía no habían presentado estos temas en sus clases y tampoco habían participado en cursos de formación que abordaran estos temas. O presente trabalho apresenta uma reflexão acerca da utilização da História da Ciência no currículo da educação formal, por meio da discussão relativa ao emprego de elementos culturais de grupos étnicos em ações voltadas à educação em Astronomia. O trabalho foi desenvolvido no âmbito de um curso de extensão e a análise aqui empreendida refere-se a um encontro que abordou sequências didáticas relativas àquele tema, com fundamento na lei 11.645/2008 e a obrigatoriedade de abordagem da temática "História e Cultura Afro-Brasileira e Indígena" no currículo oficial. A ação de extensão ocorreu junto a professores que ensinam Ciências da Natureza, no interior do estado de São Paulo, discutindo-se temas relativos ao uso de História da Ciência e o relacionamento com cosmogonias oriundas dos povos Iorubá e Tupi, evidenciando como podem enriquecer o trabalho com a(s) Astronomia(s) em sala de aula. Observou-se que os participantes ainda não haviam apresentado estes temas em suas aulas e, igualmente, não participaram de cursos de formação que contemplassem a referida temática.

  11. Faulted hybrid joints: an example from the Campo de Dalias (Betic Cordilleras, Spain)

    NASA Astrophysics Data System (ADS)

    Marín-Lechado, Carlos; Galindo-Zaldívar, Jesús; Rodríguez-Fernández, Luís. Roberto; González-Lodeiro, Francisco

    2004-11-01

    The development of hybrid and faulted joints has not been studied in detail in natural outcrops. This field study in the Campo de Dalias (Betic Cordilleras) establishes the distinctive features of these structures as compared with those predicted by theoretical studies. Hybrid joints appear as two sets of vertical joints forming variable angles, but generally about 25°, with opening directions orthogonal to joint planes. Their development requires low differential stresses with a tensile minimum stress. The main criteria that indicate the existence of faulted joints are: (1) the presence of subvertical fault planes with oblique slip forming a complex pattern of dextral and sinistral faults developed under a single stress regime; (2) faults with similar geometries as joints in the same outcrop, showing an inconsistent cross-cutting relationship; and (3) the development of small basins with variable polarity of asymmetric wedge filling. A permutation in stress orientation since the Tortonian in the Campo de Dalias was responsible for the development of a faulted hybrid joint system, with a constant ENE-WSW extension trend and a switch of σ1 between NNW-SSE and vertical.

  12. Petroleum exploration plays of the onshore Douala/Kribi Campo of Cameroon, West Africa

    SciTech Connect

    Seme Abomo, R.

    1996-08-01

    Generally, rifting and drifting phases characterize the Douala/Kribi Campo Formation. The rifting phase resulted from a progressive northward plate tectonic evolution, which extended from Late Jurassic to Neocomian-Turonian time, involving both an extensional process and strike-slip movements along fracture zones. The drifting phase was established during the Albian period, with the first marine incursion in the basin. During this phase, sedimentation was controlled by such factors as sea level variations, drainage systems and climate. Consequently, the onshore sector of the Douala/Kribi-Campo Basin can be subdivided into two major areas with different petroleum exploration plays. The southern area in which the rifting phase has thick Albo-Aptian sediments of terrigenous and clastics nature. These were deposited in coalescing fan deltas, locations of which were controlled by collapsed and tilted blocks. Trangressive deposits of the drifting phase overlie the erosional surface. In the northern area, the rifting phase consists of a system of horsts and grabens of Aptian time. The drifting phase consists of shelf sandstones and Upper Cretaceous turbiditic deposits.

  13. Petroleum geology of Campos Basin, Brazil: A successful case history of deep water exploration

    SciTech Connect

    Franke, M.R.; Lugon, H.A.F.; Beraldo, W.L. )

    1990-05-01

    Campos Basin, the most prolific Brazilian basin, produces almost 400,000 bbl of oil per day and contains 70% of the national reserves. The basin is located on the southeastern coast of Brazil, covering a prospectable area of 100,000 km{sup 2} Campos is a passive continental margin basin originated by the breakup of Pangea and the rifting of the South American and African plates in the Early Cretaceous. The basin's sedimentary section encompasses three megasequences: nonmarine, transitional, and marine, ranging in age from Neocomian to Holocene. Hydrocarbon generation is related to nonmarine organic-rich shales and marls, and hydrocarbon entrapment assumes ascendent migration along fault planes and through salt gaps toward reservoirs ranging in age from Neocomian to Tertiary (mainly turbiditic sandstones). The first onshore stratigraphic well was drilled based on gravity surveys in 1958. The acquisition of new geophysical data, mainly seismic reflection data, followed after 1968. The first offshore well was drilled in 1971, and in 1974, the first oil field, Garopua, was discovered. Giant hydrocarbon accumulations have been discovered in water depths ranging from 400 to 1,800 m since 1984. As of mid-1989, 35 offshore oil fields have been discovered, 760 million bbl of oil, and 490 bcf of gas have been produced. The basin oil and equivalent gas reserves are estimated in 6.0 billion bbl, 60% of which is located in the deep-water giant oil fields.

  14. The aquatic and semiaquatic biota in Miocene amber from the Campo LA Granja mine (Chiapas, Mexico): Paleoenvironmental implications

    NASA Astrophysics Data System (ADS)

    Serrano-Sánchez, María de Lourdes; Hegna, Thomas A.; Schaaf, Peter; Pérez, Liseth; Centeno-García, Elena; Vega, Francisco J.

    2015-10-01

    Amber from the Campo La Granja mine in Chiapas, Mexico, is distinct from other sources of amber in Chiapas. Campo La Granja amber has distinct layers created by successive flows of resin with thin layers of sand on most surfaces. Aquatic and semi-aquatic arthropods are commonly found. Together these pieces of evidence suggest an estuarine environment similar to modern mangrove communities. The aquatic crustaceans are the most intriguing aspect of the biota. A large number of ostracods have been found in the amber-many with their carapaces open, suggesting that they were alive and submerged in water at the time of entombment. The only known examples of brachyuran crabs preserved in amber are found in the Campo La Granja amber. Amphipods, copepods, isopods, and tanaids are also members of the crustacean fauna preserved in amber.

  15. The Aula EspaZio Gela and the Master of Space Science and Technology in the Universidad del País Vasco (University of the Basque Country)

    NASA Astrophysics Data System (ADS)

    Sánchez-Lavega, Agustín; Pérez-Hoyos, Santiago; Hueso, Ricardo; del Río-Gaztelurrutia, Teresa; Oleaga, Alberto

    2014-09-01

    We present the Aula EspaZio Gela, a facility dedicated to teaching Space Science and Technology at the master and doctorate level at the University of the Basque Country (Spain), and to promoting the development of this field in both public and private sectors. The one-year master's degree in Space Science and Technology (60 ECTS (European Credit Transfer and Accumulation System)) offers a group of compulsory courses which give way afterwards to a set of elective matters in which students choose one of two tracks: the scientific, primarily oriented to basic research at the University, or the technological, leading to the space industry and space agencies. After completion of the master thesis, our students have direct access to a PhD in both curricular lines. Here we detail the main features of the master's degree and the experience acquired in three years, including a comparative opinion survey to the students. We also describe the facilities at the Faculty of Engineering consisting of a specific classroom (Aula EspaZio Gela), an Astronomical Observatory, and different laboratories.

  16. Electric field modification of magnetism in Au/La2/3Ba1/3MnO3/Pt device

    PubMed Central

    Xiong, Y. Q.; Zhou, W. P.; Li, Q.; Cao, Q. Q.; Tang, T.; Wang, D. H.; Du, Y. W.

    2015-01-01

    The La2/3Ba1/3MnO3 film is deposited in a CMOS-compatible Pt/Ti/SiO2/Si substrate with the oxygen pressure of 10 Pa for investigating magnetoelectric effect. Bipolar resistive switching effect with excellent endurance and retention is observed in this Au/La2/3Ba1/3MnO3/Pt device. Through this effect, a significant nonvolatile change of magnetization is obtained in this device as well. The change of magnetization can be understood by the break and repair of the -Mn3+-O2−-Mn4+- chains induced by the electric field through the oxygen vacancies migration. The resistance and magnetization of the Au/La2/3Ba1/3MnO3/Pt device can be simultaneously manipulated by the electric field, which makes it to be a promising candidate for the multifunctional memory devices. PMID:26238932

  17. Discovering research value in the Campo del Cielo, Argentina, meteorite craters

    NASA Astrophysics Data System (ADS)

    Cassidy, William A.; Renard, Marc L.

    1996-07-01

    The Campo del Cielo meteorite crater field in Argentina contains at least 20 small meteorite craters, but a recent review of the field data and a remote sensing study suggest that there may be more. The fall occurred ˜4000 years ago into a uniform loessy soil, and the craters are well enough preserved so that some of their parameters of impact can be determined after excavation. The craters were formed by multi-ton fragments of a type IA meteoroid with abundant silicate inclusions. Relative to the horizontal, the angle of infall was ˜9°. Reflecting the low angle of infall, the crater field is elongated with apparent dimensions of 3 × 18.5 km. The largest craters are near the center of this ellipse. This suggests that when the parent meteoroid broke apart, the resulting fragments diverged from the original trajectory in inverse relation to their masses and did not undergo size sorting due to atmospheric deceleration. The major axis of the crater field as we know it extends along N63°E, but the azimuths of infall determined by excavation of Craters 9 and 10 are N83.5°E and N75.5°E, respectively. This suggests that the major axis of the crater field is not yet well determined. The three or four largest craters appear to have been formed by impacts that disrupted the projectiles, scattering fragments around the outsides of the craters and leaving no large masses within them; these are relatively symmetrical in shape. Other craters are elongated features with multi-ton masses preserved within them and no fragmentation products outside. There are two ways in which field research on the Campo del Cielo crater field is found to be useful. (1) Studies exist that have been used to interpret impact craters on planetary surfaces other than the Earth. This occurrence of a swarm of projectiles impacting at known angles and similar velocities into a uniform target material provides an excellent field site at which to test the applicability of those studies. (2) Individual

  18. Microfacies, depositional models and diagenesis of Lagoa Feia Formation (lower cretaceous), Campos Basin, offshore Brazil

    NASA Astrophysics Data System (ADS)

    Bertani, R. T.

    The Lagoa Feia Formation consists of the sediments deposited during the rift valley stage of the Campos Basin, varying from 200m to more than 1500m in thickness. In this unit seventeen microfacies were recognized, grouped into four main sequences, respectively dominated by terrigenous supplies, ostracods, pelecypods, and basic volcaniclastics. The vertical sequence of microfacies and the associations of syndepositional diagenetic minerals were used to reconstruct the general environment of deposition. Five diagenetic stages were recognized. Pelecypod rich microfacies present the highest potential for development of intraparticle and moldic secondary porosity. Two types of fabric selective porosity were experimentally developed in low porosity samples under simulated burial conditions. Intercrystal microporosity was formed by preferential dissolution of micrite size calcite compared to coarse calcite crystals of sparite and neomorphosed bioclasts, and intraparticle porosity was developed in pelecypod shells by selective dissolution of neomorphic calcite compared to sparite cement.

  19. Glacial changes and glacier mass balance at Gran Campo Nevado, Chile during recent decades

    NASA Astrophysics Data System (ADS)

    Schneider, C.; Schnirch, M.; Kilian, R.; Acuña, C.; Casassa, G.

    2003-04-01

    Within the framework of the program Global Land Ice Measurements from Space (GLIMS) a glacier inventory of the Peninsula Muñoz Gamero in the southernmost Andes of Chile (53°S) has been generated using aerial photopgrahy and Landsat Thematic Mapper imagery. The Peninsula is partly covered by the ice cap of the Gran Campo Nevado (GCN), including several outlet glaciers plus some minor glaciers and firn fields. All together the ice covered areas sum up to 260 km2. GCN forms the only major ice body between the Southern Patagonia Icefield and the Strait of Magallan. Its almost unique location in a zone affected year-round by the westerlies makes it a region of key interest in terms of glacier and climate change studies of the west-wind zone of the Southern Hemisphere. A digital elevation model (DEM) was created for the area, using aerial imagery from 1942, 1984, and 1998 and a Chilean topographic map (1: 100 000). All information was incorporated into a GIS together with satellite imagery from 1986 and 2001. Delineation of glacier inflow from the central plateau of Gran Campo Nevado was accomplished using an automatic module for watershed delineation within the GIS. The GIS served to outline the extent of the present glaciation of the peninsula, as well as to evaluate the derived historic information. The comparison of historic and recent imagery reveals a dramatic glacier retreat during the last 60 years. Some of the outlet glaciers lost more than 20% of their total area during this period. In February and March 2000 a automatic weather station (AWS) was run on a nameless outlet glacier, inofficially Glaciar Lengua, of the Gran Campo Nevado Ice Cap. From the computed energy balance, it was possible to derive degree-day factors for the Glaciar Lengua. With data from the nearby AWS at fjord coast (Bahia Bahamondes) we computed ablation for the summer seasons of 1999/2000, 2000/2001 and 2001/2002. Ablation at 450 m a.s.l. sums up to about 7 m in 1999/2000, 5.5 m in 2000

  20. Multiple types of human papillomavirus in cervical samples in women in Campo Grande, MS, Brazil.

    PubMed

    Tozetti, Inês Aparecida; Scapulatempo, Ilzia Doraci Lins; Kawski, Vicky Liege; Ferreira, Antonio Walter; Levi, José Eduardo

    2006-10-01

    We analyzed 87 cervical samples from Campo Grande, Mato Grosso do Sul, with a PGMY/GP+ nested PCR system. Positive samples were typed using E7 type-specific primer pairs for HPV 6/11, 16, 18, 45 and 66. Eighteen samples (22%) were infected with HPV6/11, 18 samples (22%) with HPV66, 13 samples (15.9%) with HPV45, 8 samples (9.8%) with HPV18 and 7 samples (8.5%) with HPV16. Seventeen samples (20.7%) were infected by two HPV types, and five samples (6.1%) by three HPV types. We conclude that infection with multiple types is present at a high frequency in our population and that there is a relation between some types and cytological finds.

  1. Radiogenic Xenon-129 in Silicate Inclusions in the Campo Del Cielo Iron Meteorite

    NASA Technical Reports Server (NTRS)

    Meshik, A.; Kurat, G.; Pravdivtseva, O.; Hohenberg, C. M.

    2004-01-01

    Iron meteorites present a challenge for the I-Xe dating technique because it is usually the inclusions, not metal, that contain radiogenic xenon and iodine. Silicate inclusions are frequent in only types IAB and IIE, and earlier studies of irons have demonstrated that I-Xe system can survive intact in these inclusions preserving valuable age information. Our previous studies of the I-Xe record in pyroxene grains from Toluca iron suggested an intriguing relationship between apparent I-Xe ages and (Mg+Fe)/Fe ratios. The I-Xe system in K-feldspar inclusions from Colomera (IIE) had the fingerprint of slow cooling, with an indicated cooling rate of 2-4 C/Ma. Here we present studies of the iodine-xenon system in a silicate-graphite-metal (SiGrMet) inclusion of the IA Campo del Cielo iron meteorite from the collection of the Museum of Natural History in Vienna.

  2. High carbon monoxide concentrations during the rainy season in Campo Grande, in central Brazil.

    PubMed

    Boian, C; Kirchhoff, V W J H

    2006-10-01

    This work describes an event of unusually large mixing ratios of carbon monoxide, CO, observed during a typical rainy season time period in central Brazil, when concentrations are expected to be at low levels. CO measurements were performed in Campo Grande (20.02 degrees S; 54.5 degrees W), from July 2001 to October 2002, covering entire periods of the dry and wet seasons. From January to June, average CO was 131 parts per billion by volume (ppbv). During November/December, average CO is about 180 ppbv. On November 13, 521.9 and 565.6 ppbv were observed. It is shown that for this special event, in which there was practically no fire activity at or near the site, air parcels reaching the site were enriched with fire products from regions much further north, near the equatorial region, where the fire activity is delayed in time, compared to central Brazil.

  3. Heterogeneity, Transmissive Properties and Diagenesis of Reefal Carbonates at the Campos Site (Mallorca, Spain).

    NASA Astrophysics Data System (ADS)

    Garing, C.; Pezard, P. A.; Gouze, P.; Loggia, D.; Maria-Sube, Y.; Hebert, V.; Henry, G.; Barry, S.; Lods, G.; Leprovost, R.; Le Borgne, T.; Camoin, G.; Lapointe, P.

    2008-12-01

    In order to develop a strategy for the quantitative analysis and description of fluid flow and salt transport in coastal carbonate aquifers, a new test site has been developed since 2003 in the context of the ALIANCE EC project (2002-2005). The site samples a Miocene reef drilled to 100 m-depth or more near Campos, in the SE part of Mallorca 6 km away from the coast. A salt wedge running more than 15 inland is cut, with a transition found at 60 to 80 m depth in the reference hole. With lagoonal and platform-like structures at the top, karstified reefal constructions in the middle and slope deposits at the base, the geological structure of the site is that expected for a Miocene reef. Somewhat similar structures are exposed along the coast 15 km to the SW, with a 100 m-high cliff at Cap Blanc. A total of 12 boreholes have been drilled, 7 of them entirely cored, in a field 114 by 87 m at surface. Core and thins sections analyses, petrophysical characterization from core plugs, downhole geophysical measurement and images, and hydrogeological experiments underline the heterogeneity of the formation, with a major impact on fluid flow and the location of the fluid transition zone. Since 2006, new downhole methods have been deployed (i) to further characterize the structure in terms of permeability and dispersivity, (ii) to study how the freshwater/saltwater interface is related to geology and pore space heterogeneities, (iii) to initiate a long-term hydrodynamic, geochemical and geophysical downhole monitoring of the transition zone in relation to climatological or anthropogenic boundary conditions. In particular, the chemical and geophysical data document ongoing dissolution- precipitation processes within the freshwater/saltwater transition zone. Together with that recrystallized in the past, the Campos experimental site provides a unique laboratory to study diagenetic processes in carbonates in the context of a saline wedge and particularly that of island

  4. Mineralogy of Inclusions in the Campo Del Cielo and Mont Dieu Irons and Segregation of Partial Melts

    NASA Astrophysics Data System (ADS)

    Takeda, H.; Ishii, T.; Otsuki, M.

    2001-03-01

    To find partial melt segregation, we studied two new irons. Segregations of albite and chromite were found in Campo del Cielo and ameboidal FeS in Mont Dieu with the same shape as in IIE irons together with minor Cr diopside and Na,K-rich glass.

  5. Land use change and ecosystem service provision in Pampas and Campos grasslands of southern South America

    NASA Astrophysics Data System (ADS)

    Modernel, P.; Rossing, W. A. H.; Corbeels, M.; Dogliotti, S.; Picasso, V.; Tittonell, P.

    2016-11-01

    New livestock production models need to simultaneously meet the increasing global demand for meat and preserve biodiversity and ecosystem services. Since the 16th century beef cattle has been produced on the Pampas and Campos native grasslands in southern South America, with only small amounts of external inputs. We synthesised 242 references from peer-reviewed and grey literature published between 1945 and mid-2015 and analysed secondary data to examine the evidence on the ecosystem services provided by this grassland biodiversity hotspot and the way they are affected by land use changes and their drivers. The analysis followed the requirements of systematic review from the PRISMA statement (Moher et al 2009 Acad. Clin. Ann. Intern. Med. 151 264-9). The Pampas and Campos provide feed for 43 million heads of cattle and 14 million sheep. The biome is habitat of 4000 native plant species, 300 species of birds, 29 species of mammals, 49 species of reptiles and 35 species of amphibians. The soils of the region stock 5% of the soil organic carbon of Latin America on 3% of its area. Driven by high prices of soybean, the soybean area increased by 210% between 2000 and 2010, at the expense of 2 million ha (5%) of native grassland, mostly in the Pampas. Intensification of livestock production was apparent in two spatially distinct forms. In subregions where cropping increased, intensification of livestock production was reflected in an increased use of grains for feed as part of feedlots. In subregions dominated by native grasslands, stocking rates increased. The review showed that land use change and grazing regimes with low forage allowances were predominantly associated with negative effects on ecosystem service provision by reducing soil organic carbon stocks and the diversity of plants, birds and mammals, and by increasing soil erosion. We found little quantitative information on changes in the ecosystem services water provision, nutrient cycling and erosion control

  6. The Preschool Classroom as a Context for Cognitive Development: Type of Teacher Feedback and Children's Metacognitive Control (El aula Preescolar como espacio de desarrollo cognitivo: tipo de feedback docente y control metacognitivo en los niños)

    ERIC Educational Resources Information Center

    Muñoz, Liz; Cruz, Josefina Santa

    2016-01-01

    Introduction: The aim of this work was to determine whether the type of feedback given by the preschool teacher during class impacts the children's metacognitive control. For this purpose, the children's behavior was analyzed while teachers provided feedback during collaborative learning sessions. Method: A quasi-experimental, cross-sectional…

  7. Variation of surface ozone in Campo Grande, Brazil: meteorological effect analysis and prediction.

    PubMed

    Pires, J C M; Souza, A; Pavão, H G; Martins, F G

    2014-09-01

    The effect of meteorological variables on surface ozone (O3) concentrations was analysed based on temporal variation of linear correlation and artificial neural network (ANN) models defined by genetic algorithms (GAs). ANN models were also used to predict the daily average concentration of this air pollutant in Campo Grande, Brazil. Three methodologies were applied using GAs, two of them considering threshold models. In these models, the variables selected to define different regimes were daily average O3 concentration, relative humidity and solar radiation. The threshold model that considers two O3 regimes was the one that correctly describes the effect of important meteorological variables in O3 behaviour, presenting also a good predictive performance. Solar radiation, relative humidity and rainfall were considered significant for both O3 regimes; however, wind speed (dispersion effect) was only significant for high concentrations. According to this model, high O3 concentrations corresponded to high solar radiation, low relative humidity and wind speed. This model showed to be a powerful tool to interpret the O3 behaviour, being useful to define policy strategies for human health protection regarding air pollution.

  8. Selecting a proper design period for heliostat field layout optimization using Campo code

    NASA Astrophysics Data System (ADS)

    Saghafifar, Mohammad; Gadalla, Mohamed

    2016-09-01

    In this paper, different approaches are considered to calculate the cosine factor which is utilized in Campo code to expand the heliostat field layout and maximize its annual thermal output. Furthermore, three heliostat fields containing different number of mirrors are taken into consideration. Cosine factor is determined by considering instantaneous and time-average approaches. For instantaneous method, different design days and design hours are selected. For the time average method, daily time average, monthly time average, seasonally time average, and yearly time averaged cosine factor determinations are considered. Results indicate that instantaneous methods are more appropriate for small scale heliostat field optimization. Consequently, it is proposed to consider the design period as the second design variable to ensure the best outcome. For medium and large scale heliostat fields, selecting an appropriate design period is more important. Therefore, it is more reliable to select one of the recommended time average methods to optimize the field layout. Optimum annual weighted efficiency for heliostat fields (small, medium, and large) containing 350, 1460, and 3450 mirrors are 66.14%, 60.87%, and 54.04%, respectively.

  9. [Work-related accidents on oil drilling platforms in the Campos Basin, Rio de Janeiro, Brazil].

    PubMed

    Freitas, C M; Souza, C A; Machado, J M; Porto, M F

    2001-01-01

    The offshore oil industry is characterized by complex systems in relation to technology and organization of work. Working conditions are hazardous, resulting in accidents and even occasional full-scale catastrophes. This article is the result of a study on work-related accidents in the offshore platforms in the Campos Basin, Rio de Janeiro State. The primary objective was to provide technical back-up for both workers' representative organizations and public authorities. As a methodology, we attempt to go beyond the immediate causes of accidents and emphasize underlying causes related to organizational and managerial aspects. The sources were used in such a way as to permit classification in relation to the type of incident, technological system, operation, and immediate and underlying causes. The results show the aggravation of safety conditions and the immediate need for public authorities and the offshore oil industry in Brazil to change the methods used to investigate accidents in order to identify the main causes in the organizational and managerial structure of companies.

  10. Shear-strength signatures of mass movements, continental slope of Campos Basin, Brazil

    NASA Astrophysics Data System (ADS)

    Kowsmann, R. O.; da Costa, A. M.; Amaral, C. S.

    2003-04-01

    Downhole shear-strength profiles, obtained from cone-penetrometer and lab tests were tied to sedimentary facies from adjacent continuous cores. The geotechnical response of mass-transport deposits was investigated. In the Campos Basin, sediments have evacuated from the upper continental slope and have accumulated as folded deposits on the middle slope. Sediment removal is recognised by an abrupt step-like increase in shear-strength at the level of the unconformity. The folded deposits are characterised by a belly-shaped increase in shear-strength coinciding with a zone of intense lamination within the deposit, induced by internal shearing and fluid loss (strain hardening). In contrast, highly disintegrated muddy debris-flow deposits are indistinguishable, in terms of shear-strength, from normal hemipelagic slope sediments. Debris-flow tongues emanating from canyon mouths, which contain a significant amount of more consolidated mud clasts can however be differentiated from in situ sediments by their serrated signature and higher shear-strength.

  11. Nephtyidae (Annelida: Polychaeta) from the Campos Basin, including two new species and a new record.

    PubMed

    Franco, Natália Bizzo; Rizzo, Alexandra E

    2016-05-24

    Members of the marine polychaete family Nephtyidae are commonly found in soft substrates. Their most distinctive characteristic is the presence of interramal branchiae located between the notopodia and neuropodia. In the present study, five species of Nephtyidae: Aglaophamus fabrun sp. nov., Aglaophamus juvenalis (Kinberg, 1866), Inermonephtys inermis (Ehlers, 1887), Inermonephtys soldius sp. nov. and Nephtys squamosa Ehlers, 1887 were found in the Campos Basin, state of Rio de Janeiro, including two new species and a new record for the Brazilian coast. Aglaophamus fabrun sp. nov. has a proboscis with 10 pairs of distal papillae and approximately 20 subdistal papillae in rows, with 3-5 papillae in each row; and lacks an unpaired median papilla; the prostomium has a pair of eyes and a characteristic pigmentation pattern. Inermonephtys soldius sp. nov. has interramal branchiae starting from parapodium 5, and basal papillae starting on chaetiger 6. Inermonephtys inermis is a new record for the Brazilian coast. Descriptions, comments and a key to species of Nephtyidae recorded from Brazil are provided.

  12. Lagoa Feia Formation (Lower Cretaceous), Campos basin, offshore Brazil - Rift-Valley-Stage Lacustrine carbonate reservoirs

    SciTech Connect

    Bertani, R.; Petrobras, T.; Carozzi, A.V.

    1985-02-01

    The Lagoa Feia Formation, buried in excess of 3000 m, is the exploration frontier of the prolific Campos basin. It contains the source beds of all the basin's oil in addition to having its own potential carbonate reservoirs. The faulted margins of the basin fed a system of alluvial fans, sand flats, and mud flats. Alternating dry and rainy period regulated the size and nature of contemporaneous basinal alkaline lakes. Dry periods corresponded to contracted playa lakes with ostracod carbonates and euxinic shales; rainy periods corresponded to expanded pluvial lakes with pelecypod banks. Subaqueous intrusions of basaltic magma generated hyaloclastites with kerolitic ooids and hyalotuffs. Petrographic analysis reveals 5 diagenetic stages: (1) syndepositional alteration of lithoclasts to trioctahedral smectites; (2) early dolomitization, early silicification, and cementation by bladed-rim calcite and zeolites; (3) freshwater-vadose dissolution of bioclasts and lithoclasts, freshwater-phreatic sparite cementation, and neomorphism; (4) mixed saline-freshwater silicification; and (5) burial with compaction, late dolomitization, and partial conversion of smectites to illite. Pelecypod limestones with primary interparticle, secondary intraparticle, moldic, and moldic-enlarged porosities are the potential reservoirs. Ideal conditions for porosity generation and preservation were subaerial exposure followed by rapid lake expansion and burial.

  13. Influence of urban area on the water quality of the Campo River basin, Paraná State, Brazil.

    PubMed

    Carvalho, K Q; Lima, S B; Passig, F H; Gusmão, L K; Souza, D C; Kreutz, C; Belini, A D; Arantes, E J

    2015-12-01

    The Campo River basin is located on the third plateau of the Paraná State or trap plateau of Paraná, at the middle portion between the rivers Ivaí and Piquiri, southern Brazil, between the coordinates 23° 53 and 24° 10' South Latitude and 52° 15' and 52° 31' West Longitude. The basin has 384 Km² area, being 247 km² in the municipality of Campo Mourão and 137 km² in the municipality of Peabiru, in Paraná State. The Campo River is a left bank tributary of the Mourão River, which flows into the Ivaí River. The objective of this study was to monitor water quality in the Km 119 River and the Campo River, tributaries of the Mourão River, with monthly collection of water samples to determine pH, temperature, turbidity, biochemical oxygen demand, dissolved oxygen, fecal coliforms, total solids, total nitrogen, ammoniacal nitrogen, nitrite, nitrate and total phosphorus. The results obtained were compared with the indices established by the environmental legislation and applied in the determination of the Water Quality Index (WQI) used by the Water Institute of Paraná State, regulating environmental agency. Poor water quality in these rivers presents a worrying scenario for the region, since this river is the main source of water supply for the public system. Results of organic matter, fecal coliforms and total phosphorus were higher than the limits established by Resolution CONAMA 357/2005 to river class 2, specially at downstream of the Km 119 River and the Campo River, due to the significant influence of the urban anthropic activity by the lack of tertiary treatment and also rural by the lack of basic sanitation in this area. Results of WQI of Km 119 River and do Campo River indicated that water quality can be classified as average in 71% and good in 29% of the sites evaluated.

  14. The family Caprellidae (Amphipoda: Caprelloidea: Caprellidae) from Campos Basin, Southwestern Atlantic, with a key of species occurring in Brazil.

    PubMed

    Mauro, Fábio Da Motta; Serejo, Cristiana Silveira

    2015-08-21

    Caprellid material of the present study was collected between 25-3000 m depth from the Campos Basin area, Southwestern Atlantic. As a result, Deutella incerta was found as a new record to the Southwestern Atlantic and two new species are described: Liropus guerragarciai sp. nov. and Mayerella sittropiae sp. nov. Besides, Paracaprella pusilla is herein redescribed as a common component of the Campos Basin amphipod community. Caprellids are a diverse and abundant group that can be found among algae and general biological substrates of the continental shelf area. As more deep sea samples are coming into light, they are turning out to be also a common component in this habitat. Including the present data, there are 25 caprellid species recorded in Brazil, being four of them restricted to the slope areas and 14 endemic to the Brazilian coast. A key to the Caprellidae species from Brazil is provided.

  15. Relación entre la orientación de Nebulosas Planetarias y el campo magnético galáctico

    NASA Astrophysics Data System (ADS)

    Weidmann, W.; Díaz, R. J.; Carranza, G.

    Un estudio detallado de las orientaciones diferenciales de nebulosas planetarias en todo el cielo sugiere fuertemente una relación con la dirección de los campos magnéticos de origen galáctico, determinados en la polarización de estrellas de campo. Esto da consistencia a la hipótesis de que la orientación de las nebulosas planetarias ovaladas es inducida, al menos parcialmente, por el campo magnético general de la Vía Láctea.

  16. Diversity in bee (Hymenoptera: Apoidea) and social wasp (Hymenoptera: Vespidae, Polistinae) community in "campos rupestres", Bahia, Brazil.

    PubMed

    da Silva-Pereira, Vivane; Santos, Gilberto M M

    2006-01-01

    Hymenoptera such as bees and social wasps are regular floral visitors in "campos rupestres" vegetation. A community of bees and social wasps was studied during floral visitation in an area of "campos rupestres", at Chapada Diamantina, BA, Brazil, from September 2001 to April 2002. The community was described in relation to diversity, evenness, and dominance rank, considering the individuals abundance (H' = 2.14/ J' = 0.55) and biomass (H' = 2.34/ J' = 0.60). Thirty nine bee (588 individuals/ 15.742 g) and 11 social wasp species (52 individuals/ 2.156 g) were collected, being the first report of social wasps for the Brazilian "campos rupestres". The main species regarding number of individuals were Trigona spinipes (Fabricius), Apis mellifera L., Frieseomelitta francoi (Moure), and Bombus brevivillus Franklin. About 48% of the species were represented by a single individual. There was an inversion in the dominance rank when the species biomass was considered. B. brevivillus, A. mellifera, T spinipes, and other species represented by 15 individuals or less, such as the social wasps Synoeca cyanea (Olivier), Polistes canadensis (L.) and Myschocyttarus drewseni (Saussure), and the bees Eufriesea nigrohirta (Friese), Xylocopa grisescens Lepeletier and Megachile (Pseudocentron) sp.l were the predominant species. The use of biomass in diversity analysis permitted to detect differences in the relative contribution of species in hierarchy dominance. The comparison between bee faunas from different areas indicates a large similarity of the sampled fauna in Palmeiras (Bahia State) with neighboring ecosystems, although with low values of similarity.

  17. Estudio de la envoltura fría en presencia de un campo magnético en estrellas tempranas

    NASA Astrophysics Data System (ADS)

    Montero, M. F.; Platzeck, A. M.

    En el estudio de la distribución espacial de la densidad en torno a estrellas tempranas, al menos en dos coordenadas, se consideran en general ``escenarios" cualitativos. Existen sólo dos modelos calculados a partir de la ecuación de conservación de momento: el de Poeckert y Marlborough (Astroph. Journal 220, 940, 1978) y el de Ringuelet e Iglesias (Astroph. Journal 369, 463, 1991). El primero es isotermo considerando campo gravitatorio y fuerza centrífuga. El segundo, resuelve un caso no isotermo en equilibrio hidrostático teniendo en cuenta los campos gravitatorios, de radiación y magnético. En esta comunicación presentamos el análisis, que se deriva de los resultados de Ringuelet e Iglesias para el caso hidrostático, de la estructura de líneas de campo magnético. A continuación estudiamos la forma en que se modifica la distribución espacial de la densidad en la envoltura fría, cuando se tiene en cuenta el movimiento del plasma.

  18. The Alegre Lineament and its role over the tectonic evolution of the Campos Basin and adjacent continental margin, Southeastern Brazil

    NASA Astrophysics Data System (ADS)

    Calegari, Salomão Silva; Neves, Mirna Aparecida; Guadagnin, Felipe; França, George Sand; Vincentelli, Maria Gabriela Castillo

    2016-08-01

    The structural framework and tectonic evolution of the sedimentary basins along the eastern margin of the South American continent are closely associated with the tectonic framework and crustal heterogeneities inherited from the Precambrian basement. However, the role of NW-SE and NNW-SSE structures observed at the outcropping basement in Southeastern Brazil and its impact over the development of those basins have not been closely investigated. In the continental region adjacent to the Campos Basin, we described a geological feature with NNW-SSE orientation, named in this paper as the Alegre Fracture Zone (AFZ), which is observed in the onshore basement and can be projected to the offshore basin. The main goal of this work was to study this structural lineament and its influence on the tectonic evolution of the central portion of the Campos Basin and adjacent mainland. The onshore area was investigated through remote sensing data joint with field observations, and the offshore area was studied through the interpretation of 2-D seismic data calibrated by geophysical well logs. We concluded that the AFZ occurs in both onshore and offshore as a brittle deformation zone formed by multiple sets of fractures that originated in the Cambrian and were reactivated mainly as normal faults during the rift phase and in the Cenozoic. In the Campos Basin, the AFZ delimitates the western side of the Corvina-Parati Low, composing a complex fault system with the NE-SW faults and the NW-SE transfer faults.

  19. Morphotectonic setting of maar lakes in the Campo de Calatrava Volcanic Field (Central Spain, SW Europe)

    NASA Astrophysics Data System (ADS)

    Martín-Serrano, A.; Vegas, J.; García-Cortés, A.; Galán, L.; Gallardo-Millán, J. L.; Martín-Alfageme, S.; Rubio, F. M.; Ibarra, P. I.; Granda, A.; Pérez-González, A.; García-Lobón, J. L.

    2009-12-01

    In the Campo de Calatrava Volcanic Field (CCVF, Central Spain), the eruption of Pliocene-Pleistocene maar craters into two clearly distinct types of pre-volcanic rocks allows the observation and comparison of hard-substrate and soft-substrate maar lakes. Hard-substrate maars formed when phreatomagmatic processes affected the jointed, Paleozoic igneous and metamorphic rocks (hard substrate), giving rise to funnel-like maar lake basins. Soft-substrate maars resulted from phreatomagmatic volcanic processes affecting poorly-consolidated Pliocene sediments, forming bowl-like maar lake basins. Pre-volcanic bedrock determined the post-eruptive lacustrine architecture in the craters and favored a higher preservation of hard-substrate maars in comparison to soft-substrate maars. This is because the hard-substrate maars, surrounded by a deep stable crater wall, are more capable of collecting sediments in their basins. These sediments could be preserved for longer than similar deposits in broad, shallow maars with a soft substrate. Ancient soft-substrate maars do not usually preserve their original morphology well and can be identified only by their lacustrine deposits. Carbonate lacustrine/palustrine deposits surrounding a bowl-like depression are the remnants of this second type of maar lake, and allow reconstruction of the original morphology of ancient soft-substrate maar craters. Geophysical (electrical tomography ground surveys) and geomorphologic-geologic mapping techniques were combined with fieldwork and facies analysis in order to locate and accurately characterize the Pliocene-Pleistocene soft-substrate maar volcanic structures of the CCVF.

  20. Style and pattern of salt diapirs due to thin-skinned gravitational gliding, Campos and Santos basins, offshore Brazil

    NASA Astrophysics Data System (ADS)

    Demercian, S.; Szatmari, P.; Cobbold, P. R.

    1993-12-01

    Portions of seismic lines and a structure-contour map illustrate the patterns and shapes of salt diapirs and related structures in the Campos and Santos areas, off the Atlantic coast of Brazil. We interpret the structures both kinematically and mechanically, drawing on our experience with similar salt structures worldwide, with the results of recent physical modelling and with geometric restorations in section and in plan. Salt diapirs and related structures have a variety of structural styles, distributed in domains and provinces. Near the coast, there is an upper domain, 100-200 km wide, with a suite of structures that we attribute to horizontal downdip extension: these are salt rollers, in the footwalls of listric normal growth faults; salt walls of triangular cross section, beneath intersecting conjugate normal faults; turtle anticlines; and salt welds. Downslope extension started in the Albian and has continued to the present day. In the Campos area, from simple line balancing, the accumulated downslope displacement is about 100 km. Seawards of this, there is a lower domain, 100-400 km wide, with a different suite of structures, that we attribute to downdip contraction: these are growth folds of various wavelengths, in sedimentary sequences of various thicknesses; asymmetric salt walls, emplaced above reverse faults; deep basins, wedged down between conjugate reverse faults; and salt tongues above thrusts. For Campos, we estimate the total downslope contraction, accumulated since the Albian, to be about 100 km. From the balance between extension and contraction, we infer that the thin-skinned salt tectonics are gravitationally driven and independent of any basement tectonics. The structure-contour map on the top of the salt shows that structural style is variable also along strike. Seismic sections along regional contours indicate differing amounts of strain. On this basis, we distinguish five provinces, separated by NW-SE-trending lines. For the Northern

  1. Application of MSS/LANDSAT images to the structural study of recent sedimentary areas: Campos Sedimentary Basin, Rio de Janeiro, Brazil

    NASA Technical Reports Server (NTRS)

    Parada, N. D. J. (Principal Investigator); Barbosa, M. P.

    1983-01-01

    Visual and computer aided interpretation of MSS/LANDSAT data identified linear and circular features which represent the ""reflexes'' of the crystalline basement structures in the Cenozoic sediments of the emergent part of the Campos Sedimentary Basin.

  2. Ground-water in the Teresina-Campo Maior area, Piaui, Brazil

    USGS Publications Warehouse

    Rodis, Harry G.; Suszczynski, Edison F.

    1972-01-01

    The Teresina-Campo Maior area lies in a presently developing farming and grazing region near the margin of drought-prone northeast Brazil where irrigated farming offers the best potential for economic development. The area comprises 9,700 square kilometers largely of catinga-covered tabular uplands which are drained by the perennial Rio Parnatba. The climate is hot and humid most of the year but with distinct wet and dry seasons. Temperature extremes range from 20?C to 39?C and the annum rainfall averages 1,200 millimeters. The area's ground-water reservoir is contained chiefly in sandstone aquifers of six westward-dipping sedimentary rock formations, all part of the Maranhao sedimentary basin. The youngest of these formations, namely the Piaut (Pennsylvarian), Poti (Mississippian), Longa (Upper Devonian), and Cabecas (Middle Devoniar), contain the principal aquifers. Precipitation is the primary source of recharge to these aquifers and is more than sufficient to replenish current withdrawals from wells. Underlying the principal aquifers are the untapped Pimenteiras and Serra Grande Formations (both Lower Devonian) which in areas adjacent to the report area are moderately good to excellent water producers. These aquifers are recharged principally by lateral inflow from the east. Water also occurs in the alluvial deposits (Quaternary) underlying the flood plain of the Rio Parnatba but recurrent and uncontrolled flooding at present (1966) precludes their development. Of little economic importance, because they lie above the zone of saturation, are the thin erosional remnants of the Pastos Bons (Upper Triassic), Matuca, and Pedra de Fogo (both Permian) Formations. There are in the report area about 200 drilled wells most of which are pumped with power-driven engines. The wells range from 40 to 500 meters deep but most do not exceed 150 meters, and practically all are completed open hole. Yields range from 500 liters per day for 6-inch-diameter domestic wells to 240

  3. Au/La2 Ti2 O7 Nanostructures Sensitized with Black Phosphorus for Plasmon-Enhanced Photocatalytic Hydrogen Production in Visible and Near-Infrared Light.

    PubMed

    Zhu, Mingshan; Cai, Xiaoyan; Fujitsuka, Mamoru; Zhang, Junying; Majima, Tetsuro

    2017-02-13

    Efficient utilization of solar energy is a high-priority target and the search for suitable materials as photocatalysts that not only can harvest the broad wavelength of solar light, from UV to near-infrared (NIR) region, but also can achieve high and efficient solar-to-hydrogen conversion is one of the most challenging missions. Herein, using Au/La2 Ti2 O7 (BP-Au/LTO) sensitized with black phosphorus (BP), a broadband solar response photocatalyst was designed and used as efficient photocatalyst for H2 production. The optimum H2 production rates of BP-Au/LTO were about 0.74 and 0.30 mmol g(-1)  h(-1) at wavelengths longer than 420 nm and 780 nm, respectively. The broad absorption of BP and plasmonic Au contribute to the enhanced photocatalytic activity in the visible and NIR light regions. Time-resolved diffuse reflectance spectroscopy revealed efficient interfacial electron transfer from excited BP and Au to LTO which is in accordance with the observed high photoactivities.

  4. Microgloma Sanders & Allen, 1973 (Nuculanidae) and Pristigloma Dall, 1900 (Pristiglomidae) (Pelecypoda) in the Campos Basin off Brazil

    PubMed Central

    Benaim, Natalia Pereira; Absalão, Ricardo Silva

    2011-01-01

    Abstract As a secondary result of oil prospecting in Brazil, samples from the Campos Basin continental slope became available. In these samples, specimens of the genera Microgloma Sanders & Allen, 1973 and Pristigloma Dall, 1900 were found. This contribution provides the southernmost record of the genus Microgloma, the first record of Microgloma mirmidina (Dautzenberg & Fischer 1897) from the western Atlantic, the descriptions of Microgloma macaron sp. n. and Microgloma nhanduti sp. n.as new species, and the shallowest record of Pristigloma alba Sanders & Allen 1973. PMID:22287903

  5. Mercury in sediments from shelf and continental slope at Campos Basin near Rio de Janeiro, Brazil

    NASA Astrophysics Data System (ADS)

    Araujo, Beatriz; Hintelmann, Holger; Dimock, Brian; Gomes de Almeida, Marcelo; Falcão, Ana Paula; de Rezende, Carlos Eduardo

    2016-04-01

    Mercury (Hg) is a global pollutant due to its ability to undergo long-range transport from source regions to remote parts of the world, and its ubiquitous presence in aquatic ecosystems. The Hg isotope ratios could be an effective tool for tracing the sources and process of Hg in the environment. This study aimed to establish the distribution of mercury in surface sediments of three transects (25- 3000m water depth) in continental shelf and slope in Campos Basin-RJ-Brazil, using the Hg isotopes to understand the geochemical processes relating to Hg cycling that occur in a subtropical coastal environment. The study area was divided into three transects: A (located to the south and close to a upwelling area), D (located opposite the mouth of the Paraiba do Sul River) and I (located north near the top of Vitória-ES). Sampling isobaths were 25, 50, 75, 100, 150, 400, 700, 1000, 1300, 1900, 2500 and 3000m. The Total Hg, MMHg and Hg stable isotopes were determined based on EPA Method 1631, EPA method 1630 and Foucher and Hintelmann (2006), respectively. The silt/clay ranged from 0.05 to 95%, and the organic carbon (OC) from 0.07 to 1.43 % for all transects. THg and MMHg concentrations in the shelf were 11.9 ± 7.2 (1.7- 22.2) ng.g-1 and 0.15 ± 0.12 (0.02 - 0.40) ng.g-1; in the slope 30.3 ± 9.2 (11.6 - 51.6) ng.g-1 and 0.13 ± 0.06 (0.03 -0.29) ng.g-1 , respectively. The δ202Hg and Δ199Hg varied from -0.32 to -1.85 ‰ (-0.79 ± 0.44‰) and -0.41 to 0.09 ‰ (-0.03 ± 0.12 ‰) for all transects, respectively. The delta values between both regions are significantly different, the shelf region showed δ202Hg from -0.59 to -2.19 ‰ (mean: -1.52 ±0.65) and Δ199Hg from - 0.53 to 0.08 ‰ (mean: -0.27 ±0.55) and the slope region were observed δ202Hg values from -0.32 to -1.82 ‰ (mean: -0.73 ±0.39 ‰ n=18) and gΔ199Hg from -0.23 to 0.09‰ (mean: -0.02 ±0.08‰ n=5). The slope appears to be enriched with heavier isotopes compared to the shelf, however, in the

  6. Como Lo Hago Yo: Mielomeningocele En Bolivia

    PubMed Central

    Dabdoub, Carlos F.; Dabdoub, Carlos B.; Villavicencio, Ramiro; Quevedo, Germán

    2014-01-01

    Introducción: Las malformaciones del tubo neural (MTN) representan la segunda causa más frecuente de anomalías congénitas, luego de las cardiopatías. En este grupo se destaca el mielomeningocele (MMC) por su mayor incidencia, y por ser la más incapacitante y la más compleja entre todas las demás malformaciones del sistema nervioso c`entral (SNC). En Bolivia, como en muchos países de Sudamérica, los bajos niveles socio-culturales y la debilidad en el sistema sanitario, hacen que su incidencia y su morbilidad, sean mayores que en las naciones más desarrolladas. Material y Métodos: Se realizó un estudio retrospectivo y descriptivo de 70 casos de MMC, atendidos por un equipo multidisciplinario en el Hospital Universitario Japonés (HUJ) de Santa Cruz de la Sierra, entre 2008-2011. De ellos, 60 fueron intervenidos quirúrgicamente. Resultados: Se realizaron controles prenatales sólo en 27 mujeres (38.6%), diagnosticándose una disrafia espinal en apenas dos casos (7.4%). La edad de ingreso del MMC en su mayoría fue después de las 24 horas (65.6%), predominando su localización en la región lumbosacra (64.3%). De ellos, 67.2% eran abiertos, presentando un 32.9% un daño neurológico motor parcial mientras que 47.1% tenían paraplejia por debajo de la lesión. De los 70 casos, tres (4.3%) no fueron intervenidos, por presentar defectos congénitos severos o estado general grave. Las principales complicaciones posoperatorias inmediatas fueron: dehiscencia de sutura y/o infección de la herida (16.6%), fístula de líquido cefalorraquídeo (LCR) (10%) e infección del SNC (11.7%). La mortalidad general y postoperatoria fue de 7.1% y 3.3%, respectivamente. Al mes de vida presentaban hidrocefalia un 80% de los pacientes operados, colocándose una derivación ventriculoperitoneal (DVP) de presión media. De 9 pacientes que tuvieron un acompanamiento de dos o más años, seis presentaron una médula anclada, que fueron intervenidas quirúrgicamente. Conclusi

  7. Teaching Planetary Sciences at the Universidad del País Vasco in Spain: The Aula Espazio Gela and its Master in Space Science and Technology

    NASA Astrophysics Data System (ADS)

    Hueso, R.; Sanchez-Lavega, A.; Pérez-Hoyos, S.

    2011-12-01

    Planetary science is a highly multidisciplinary field traditionally associated to Astronomy, Physics or Earth Sciences Departments. Spanish universities do not generally offer planetary sciences courses but some departments give courses associated to studies on Astronomy or Geology. We show a different perspective obtained at the Engeneering School at the Universidad del País Vasco in Bilbao, Spain, which offers a Master in Space Science and Technology to graduates in Engineering or Physics. Here we detail the experience acquired in two years of this master which offers several planetary science courses: Solar System Physics, Astronomy, Planetary Atmospheres & Space Weather together with more technical courses. The university also owns an urban observatory in the Engineering School which is used for practical exercises and student projects. The planetary science courses have also resulted in motivating part of the students to do their master thesis in scientific subjects in planetary sciences. Since the students have very different backgrounds their master theses have been quite different: From writing open software tools to detect bolides in video observations of Jupiter atmosphere to the photometric calibration and scientific use or their own Jupiter and Saturn images or the study of atmospheric motions of the Venus' South Polar Vortex using data from the Venus Express spacecraft. As a result of this interaction with the students some of them have been engaged to initiate Ph.D.s in planetary sciences enlarging a relative small field in Spain. Acknowledgements: The Master in Space Science and Technology is offered by the Aula Espazio Gela at the Universidad del País Vasco Engineer School in Bilbao, Spain and is funded by Diputación Foral de Bizkaia.

  8. Continuous Mantle Exhumation at the Outer Continental Margin of the Santos, Campos and Espírito Santo Basins, Brazil

    NASA Astrophysics Data System (ADS)

    Zalan, P. V.; Severino, M. G.; Rigoti, C. A.; Magnavita, L. P.; Oliveira, J. B.; Viana, A. R.

    2011-12-01

    The interpretation of 12,000 km of very deep (PSTM to 16 sec., PSDM to 25 km) 2D seismic sections, coupled with gravimetric and magnetometric modeling line-by-line, and the integration of the results with the regional data bank of Petrobras, all together viewed in terms of the recent tectonic models developed for the rupturing and separation of mega-plates, led to a regional (500,000 km2), first-time ever, 3D-view of the deep structure underlying the prolific sedimentary basins of Santos, Campos and Espírito Santo in southeastern Brazil. The three basins are situated onto a continental margin that narrows gradually, from south to north, from a very wide (Santos), through an intermediate (Campos), and then to a narrow (Espírito Santo) passive margin. The seismic sections shows very well the dual rheological behavior of the continental crust, consisting of a deeper and plastic lower crust (with numerous short and strong reflections that display sub-horizontal ductile flow) and a shallower and brittle upper crust (represented by a mostly transparent and faulted seismic facies topped by the sedimentary sections of the rift and thermal subsidence phases). The crustal structure of the Santos Basin shows a zonation from west to east of alternating bands of NE-SW-trending thin (plastic basement terrains) and thick (resistant basement terrains) stretched continental crust. In vertical section this zonation is displayed as a series of necking zones, leading to a highly irregular, low to moderate crustal taper. Such zonation is less developed in the Campos Basin, where the crustal taper is moderate and regular, and practically non-existent in the Espírito Santo Basin, where the crustal taper is high. The most outstanding crustal feature shared in common by the three basins is the exhumation of mantle between the tip of the hyper-extended continental crust and the tabular-shaped oceanic crust. Although the crustal taper varies significantly from basin to basin their

  9. Spotted fever group Rickettsia in Amblyomma dubitatum tick from the urban area of Campo Grande, Mato Grosso do Sul, Brazil.

    PubMed

    Matias, Jaqueline; Garcia, Marcos Valério; Cunha, Rodrigo Casquero; Aguirre, André de Abreu Rangel; Barros, Jacqueline Cavalvante; Csordas, Bárbara Guimarães; Andreotti, Renato

    2015-03-01

    Rickettsia infection of each tick was evaluated by the hemolymph test and polymerase chain reaction (PCR) targeting gltA and ompA genes. All hemolymph tests were negative and PCR of one A. dubitatum detected both Rickettsia genes. Sequence of ompA exhibited a 99% identity with Rickettsia parkeri and R. africae and a 98% identity with R. sibirica. Rickettsia of the spotted fever group in A. dubitatum is described for the first time in an urban area within the municipality of Campo Grande in the state of Mato Grosso do Sul (MS), Brazil. This finding reinforces the importance of more detailed studies to determine the role of A. dubitatum in the transmission of spotted fever agents.

  10. Time, Weather and Empires: The Campos Rodrigues Observatory in Lourenço Marques, Mozambique (1905-1930).

    PubMed

    Raposo, Pedro M P

    2015-07-01

    In 1905 the Campos Rodrigues Observatory (CRO) was founded in Lourenço Marques (nowadays Maputo), the capital of Mozambique, by then part of the Portuguese overseas empire. In this paper the inception and early history of the CRO are analysed in the broader context of the interwoven history of the Portuguese and British empires in Africa, and specifically with respect to the scientific relations between Mozambique and South Africa. The equipment, personnel, practices and networks involved in the inception and early development of the CRO are brought into focus in order to illustrate the problems and strategies that shaped the establishment and functioning of this observatory, which was conceived essentially as a symbol of imperial stamina and colonial prowess. It is suggested that by providing a focal point for the development of scientific relations between Mozambique and South Africa, the CRO served both Portuguese ambitions for recognition as an imperial power and the emergence of South African nationalism.

  11. Productive reorganization, outsourcing, and work relations in the offshore oil industry in the Campos Basin, Rio de Janeiro.

    PubMed

    Figueiredo, Marcelo; Alvarez, Denise; Athayde, Milton; Suarez, José Diego; Pereira, Renata; Soares, Leonardo

    2008-01-01

    This article analyzes the relationship between the intensive use of outsourcing and labor organizations on offshore oil platforms in the Campos Basin, Rio de Janeiro, Brazil. The theoretical and methodological framework applied in our research is based on Ergonomics of Activity and the Psychodynamics of Work, from an ergological perspective. In addition to the more general trend of increasing precariousness, we highlight the potential loss of formal and informal knowledge resulting from the fragmentation of work collectives, as we consider the cohesion of these collectives to be a crucial element contributing to reliability in process operations. Increasing precariousness of work contributes to this fragmentation and one of its main causes is the uncontrolled increase in outsourcing of work. This situation has had nefarious consequences for workers' health and safety, suggesting that those who have adopted outsourcing as a labor management tool have failed to consider these harmful consequences as rigorously as necessary.

  12. Chronology of Neogene sedimentation, stratigraphy, and tectonism in the Campo de Talampaya region, La Rioja Province, Argentina

    NASA Astrophysics Data System (ADS)

    Malizia, Daniel C.; Reynolds, James H.; Tabbutt, Kenneth D.

    1995-05-01

    Chronostratigraphic, paleoenvironmental, and tectonic analysis of a 2320 m thick Neogene continental section was conducted along the southern limit of the Campo de Talampaya. Magnetic polarity stratigraphy and fission track ages were used to develop a relatively precise geochronology. The strata record a period of mixed evaporitic and terrigenous elastic sedimentation (˜20-6.1 Ma) that persisted in the distal Bermejo Basin during eastward migration of the Precordillera fold-thrust belt. A critical transition of depositional environments and a change from western to eastern source areas occurred between 12.9 and 12.3 Ma. The saline mud-flat environment of the Río Mañero Formation, derived from a western source and characterized by fine-grained sandstones, mudstones, and evaporites, yielded to a short period of playa lake deposition. This was soon overwhelmed by deposition of the Desencuentro Formation, composed of sandstones and mudstones with an eastern source area and deposited in a sand-flat/mud-flat environment. We propose that this stratigraphic transition resulted from initiation of uplift of the Sierra de Velasco, a range of the Sierras Pampeanas, located ˜65 km to the east-northeast of the section. Basement clasts, probably derived from the Sierra de Velasco, are found in conglomeratic lenses beginning in the lower part of the Desencuentro Formation. The modern Campo de Talampaya basin formed after deposition of the top of the Alto de San Nicolás paleomagnetic section (6.1 Ma) when west-verging reverse faults uplifted the Sierra Morada and Sierra de los Tarjados. All strata in the section were tilted eastward during these culminating uplift events.

  13. Shelf-fed turbidite system model and its application to the Oligocene deposits of the Campos Basin, Brazil

    SciTech Connect

    Peres, W.E. )

    1993-01-01

    Despite the large number of models involving the genesis and sedimentary facies of deep-water sandstones, none of these models adequately explain the origin and evolution of the extremely clean, widespread (over 6000 km[sup 2]), predominantly massive, thick (over 150 m), blanket-like sandstones deposited in the deep-water environment of the Campos Basin during the Oligocene. Consequently, to explain this sandstone, the author proposes a shelf-fed turbidite system model, which is strongly based on the Campos Basin data set. The basic framework necessary for the development of a shelf-fed turbidite system includes (1) deposition of a large volume of clastics during the buildup of a shelf-sand-rich unit, which later constitutes the main source of sediment for the system, (2) localized tectonic pulses that modify the outer shelf declivity and trigger mass flows; and (3) a relative fall of sea level, which causes the subaqueous exposure of the shelf sediments to reworking in a shallow, high-energy marine environment. These three basic elements are equally important for shelf-fed turbidity system development, but relative sea level position controls the development of the progradational, aggradational, and retrogradational depositional phases within the system. Submarine canyons commonly are scoured during all three phases on the outer shelf and lower slope environments. The shelf-fed turbidite system model may apply to other sedimentary basins, principally to those of the Atlantic-continental margins that have a thick evaporite sublayer. Halokinesis can provide the necessary room for the shelf sedimentary-unit buildup, the tectonic pulses that trigger the flows, and even localized relative sea level oscillations that can accelerate or abort any one of the depositional phases of the system. 25 refs., 26 figs.

  14. Exhumation, cooling and deformation history of the necking zone of the fossil Adriatic rifted margin: the Campo/Grosina section (S-Switzerland and N-Italy)

    NASA Astrophysics Data System (ADS)

    Petri, Benoît; Mohn, Geoffroy; Wijbrans, Jan R.; Manatschal, Gianreto; Beltrando, Marco

    2016-04-01

    The Austroalpine units in SE Switzerland and N-Italy preserve remnants of the fossil Adriatic rifted margin. Notably the Campo-Grosina units represent the necking zone where major crustal thinning was accommodated during the Jurassic rifting. This contribution aims to unravel the complex tectonic evolution recorded in these units from the late Carboniferous - early Permian to the Jurassic rifting. The cooling and exhumation of the Campo and overlying Grosina units, separated by the Eita shear zone are explored by the acquisition of 40Ar/39Ar on hornblende, muscovite and biotite. New geochronological data on the Grosina unit present 40Ar/39Ar ages between 273 and 261 Ma for muscovite and between 248 and 246 Ma for biotite. The Campo unit shows clearly younger ages between 210 and 177 Ma on hornblende, between 186 and 176 Ma on muscovite and between 174 and 171 Ma on biotite. Numerous data were discarded due to frequent excess 40Ar on amphiboles, probably associated to the emplacement of the Sondalo gabbro with a high 40Ar/36Ar ratio in Permian times. These new ages, together with a compilation of existing ages obtained with different chronometers (U-Pb, Sm-Nd, Rb-Sr, K-Ar, 40Ar/39Ar) and performed on different lithologies from both the Campo and the Grosina units allow an estimation of the cooling rates for these units to be done. The new results show that both the Campo and the Grosina units underwent a cooling rate around 10°C/Ma in Permian time. The Grosina unit, being in a shallower crustal level, did not record the Jurassic cooling, reaching up to 50°C/Ma in the Campo unit. The notable difference in cooling rates between the Permian and the Jurassic events attests of a cooling without being associated to an exhumation in Permian times, whereas the Campo unit cooled rapidly in Jurassic times, due to an exhumation and an emplacement in shallow crustal levels. The latter tectonic event was likely caused by shearing along the Eita or other greenschist facies

  15. Use and valuation of native and introduced medicinal plant species in Campo Hermoso and Zetaquira, Boyacá, Colombia

    PubMed Central

    2013-01-01

    Background Medicinal plant species contribute significantly to folk medicine in Colombia. However, few local studies have investigated whether species used are introduced or native and whether there is a difference in importance of native and introduced medicinal plant species. The aim of the present study was to describe the use of medicinal plants within two municipalities, Campo Hermoso and Zetaquira, both in the department of Boyacá, Colombia and to assess the importance of native and introduced plants to healers, amateur healers and local people. As local healers including amateur healers have no history of introduced species our working hypotheses (H1-2) were that H1: native and introduced medicinal plant species are of equal importance and H2: healers and amateur healers do not differentiate in their preferences between native and introduced medicinal plant species. Methods Ten villages were included in the study. A combination of quantitative and qualitative methods was used including questionnaires, semi-structured interviews, in- depth interviews, and open talks. Voucher specimens were collected in home gardens and during field walks. For data analysis, we calculated use value indices and Jaccard index and tested for the above hypothesis using Spearman rank-correlation coefficients and Wilcoxon-Mann–Whitney tests. Results Eighty medicinal plant species were described by locals as the most frequently used. Of these, 78 species were taxonomically identified, distributed within 41 families and 74 genera, which included 35 native species and 43 introduced. The highest valued families were: Asteraceae, Lamiaceae, Apiaceae, Rutaceae and Verbenaceae. The species ranked highest according to their Use Values, in both municipalities, were Mentha suaveolens Ehrh., Ambrosia cumanensis Kunth, and Verbena littoralis Kunth. Introduced species were more important than native ones in Zetaquira, while there was no difference in importance in Campo Hermoso. While healers

  16. Morphophysiological differences in leaves of Lavoisiera campos-portoana (Melastomataceae) enhance higher drought tolerance in water shortage events.

    PubMed

    França, Marcel Giovanni Costa; Prados, Lucas Martins Zimmer; de Lemos-Filho, José Pires; Ranieri, Bernardo Dourado; Vale, Fernando Henrique Aguiar

    2012-01-01

    Lavoisiera campos-portoana Barreto (Melastomataceae) has two kinds of leaves, pubescent and glabrous, and branches may have one or both types of leaves at the same moment. The plant is endemic to high altitude rocky fields in Brazil where rainfall is very seasonal. We predicted that these two leaf types are adaptations to different regimes of water availability. In experimental conditions of drought stress, we measured relative water content (RWC), photosynthetic pigments, chlorophyll a fluorescence and osmotic potential, and we counted stomates and measured stomatal conductance on both sides of leaves and compared these between the two leaf types. Stomatal conductance and electron transport rate at a given photosynthetic photon flux were greater in pubescent leaves than in glabrous leaves, and both declined during drought stress. Excessive photon flux density in glabrous leaves was greater during stress and after rehydration. Photosynthetic pigment content and RWC did not change between leaves, and values reduced during the stress period. Both types of leaves showed osmotic adjustment capacity, which occurred earlier in glabrous ones. These morphophysiological differences highlight the adaptation strategies of this plant to withstand drought, since the glabrous portion of the plant presents a preventive behavior, while the pubescent portion only shows the same responses in more advanced stages of drought stress.

  17. [Characteristics of Family Health Program users sample in Campo Bom (RS), Brazil during the year of 2006].

    PubMed

    de Goulart, Bárbara Niegia Garcia; Algayer, Andressa Regina

    2009-10-01

    This study aims to describe the characteristics of Family Health Program (FHP) users sample in a Basic Health Unit (BHU) in Campo Bom, southern of Brazil. Based on data collected from the handbook of the first 200 patients attended in a specific BHU in January 2006, we analyzed sex, age, average number of medical and nursing consultations in the last twelve months and the reasons for requiring a BHU attendance. In this sample, 68% were female. Children represented 30.5% of the sample and 35.5% of the patients self-declared as married. In addition to that, 59% had not finished basic school. Almost half (42%) of the citizens presented some chronic disease as a complaint to go to a BUH and 17% were looking for preventive health care. In 2005, 17% of the sample had, at least, one nursing consulting and 46.5% of these had from one to four medical consultations. Chronicle diseases and its symptoms or complications represented a significant percentage of the sample and might be associated to the demands for BHU health assistance. Data collected shows the necessity of more investments to prevent complications and/or incapability. Based on a deep understanding of BHU patients' profile, family health teams can improve effectiveness of their health promotion actions focusing on community demands.

  18. Monitoring the fall of large atmospheric ice conglomerations: a multianalytical approach to the study of the Mejorada del Campo megacryometeor.

    PubMed

    Orellana, Francisco Alamilla; Alegre, José Ma Ramiro; Cordero Pérez, José Carlos; Martín Redondo, Ma Paz; Delgado Huertas, Antonio; Fernández Sampedro, Ma Teresa; Menor-Salván, César; Ruiz-Bermejo, Marta; López-Vera, Fernando; Rodríguez-Losada, José A; Martinez-Frias, Jesus

    2008-04-01

    Certain local atmospheric anomalies, such as the formation of unusually large ice conglomerations (megacryometeors), have been proposed to be a potential natural hazard for people and aviation, as well as geoindicators for fingerprinting larger-scale atmospheric environmental changes. On March 13th 2007, at approximately 10:15 am, an ice chunk weighing about 10 kg fell from the clear-sky and crashed through the roof (around 15 m) of an industrial storage house in Mejorada del Campo, a town located 20 km east from Madrid. The megacryometeor monitoring follow-up and the original investigation presented here includes, for the first time, both logistic and scientific collaboration between the Laboratory of the Environment, Criminalistic Service (SECRIM, the Spanish "Guardia Civil") and academic and scientific institutions (universities and the Spanish National Research Council). We propose that the management procedure of the incident, along with the detailed scientific research and combination of analytical methodologies in different laboratories, can serve as a protocol model for other similar events.

  19. [Strategic health planning based on determinants: case of the municipality of Campo Bom, Rio Grande do Sul State. A methodological proposal for the decentralized management].

    PubMed

    González, Martín Maximino León

    2009-10-01

    With the purpose to analyze the health strategic planning model based on determinants experienced in the municipality of Campo Bom, Rio Grande do Sul State, it was conducted an observational, qualitative study, of documental analysis as well as an evaluation of new process technologies in local health administration. This study contains an analysis of the methodological coherency and applicability of this model, based on the revision of the elaborated plans. The plans presented at Campo Bom case shows the possibility of integration and applicability at local level, of a health strategic planning model oriented to the new health concepts considering elements of different theoretical developments that enables the response to the most common local needs and situations. It was identified evolutional stages of health planning and analyzed integrative elements of the model and limitations of its application, pointing to the need of support the deepening on the study and the development of the field.

  20. Volcanism-sedimentation interaction in the Campo de Calatrava Volcanic Field (Spain): a magnetostratigraphic and geochronological study

    NASA Astrophysics Data System (ADS)

    Herrero-Hernández, Antonio; López-Moro, Francisco Javier; Gallardo-Millán, José Luis; Martín-Serrano, Ángel; Gómez-Fernández, Fernando

    2015-01-01

    This work focuses on the influence of Cenozoic volcanism of the Campo de Calatrava volcanic field on the sedimentation of two small continental basins in Spain (Argamasilla and Calzada-Moral basins). The volcanism in this area was mainly monogenetic, according to the small-volume volcanic edifices of scoria cones that were generated and the occurrence of tuff rings and maars. A sedimentological analysis of the volcaniclastic deposits led to the identification of facies close to the vents, low-density (dilute) pyroclastic surges, secondary volcanic deposits and typical maar deposits. Whole-rock K/Ar dating, together with palaeomagnetic constraints, yielded an age of 3.11-3.22 Ma for the onset of maar formation, the deposition finished in the Late Gauss-Early Matuyana. Using both techniques and previous paleontological data allowed it to be inferred that the maar formation and the re-sedimentation stage that occurred in Argamasilla and Calzada-Moral basins were roughly coeval. The occurrence of syn-eruption volcaniclastic deposits with small thicknesses that were separated by longer inter-eruption periods, where fluvial and lacustrine sedimentation was prevalent, together with the presence of small-volume volcanic edifices indicated that there were short periods of volcanic activity in this area. The volcanic activity was strongly controlled by previous basement faults that favoured magma feeding, and the faults also controlled the location of volcanoes themselves. The occurrence of the volcanoes in the continental basins led to the creation of shallow lakes that were related to the maar formation and the modification of sedimentological intra-basinal features, specifically, valley slope and sediment load.

  1. LA BIOÉTICA COMO QUEHACER FILOSÓFICO

    PubMed Central

    Ferrer, Jorge José

    2009-01-01

    El artículo examina el estatuto epistemológico de la bioética como disciplina académica. El autor sostiene que el estatuto epistemológico de un discurso lo determina la pregunta fundamental que se plantea y la respuesta que se busca, focos integradores del discurso. En el caso de la bioética, la pregunta fundamental es de índole moral. La bioética es pues una disciplina ética que tiene su hogar epistemológico en la filosofía. El autor también defiende el concepto de “éticas aplicadas”. Sugiere finalmente que el método de la bioética, sobre todo la que se hace desde nuestras latitudes, debería adoptar el círculo hermenéutico como metodología para su filosofar. PMID:20463860

  2. Invasion of the Brazilian campo rupestre by the exotic grass Melinis minutiflora is driven by the high soil N availability and changes in the N cycle.

    PubMed

    Ribeiro, Pâmella C D; Menendez, Esther; da Silva, Danielle L; Bonieck, Douglas; Ramírez-Bahena, Martha Helena; Resende-Stoianoff, Maria Aparecida; Peix, Alvaro; Velázquez, Encarna; Mateos, Pedro F; Scotti, Maria Rita

    2017-01-15

    The Serra do Rola Moça State Park (PESRM) in Minas Gerais State, Brazil is a preserved site representative of the campo rupestre biome over an ironstone outcrop that has a high level of plant diversity. Almost 60% of this grassy field has been invaded by the exotic molasses grass (Melinis minutiflora), which constitutes a severe threat to the biodiversity and survival of this biome, particularly due to the impacts of annual fires and inappropriate restoration interventions. Many invasive species exhibit a high demand for nitrogen (N). Hence, this work aimed to study the N cycle alterations promoted by M. minutiflora in a site of the campo rupestre, where the leguminous species Mimosa pogocephala was prevalent. The biome's soils exhibited a high natural N fertility and low C:N ratio. The main N source in this biome resulted from the biological N fixation performed by M. pogocephala associated with Burkholderia nodosa, as evidenced by the total leaf N content, leaf δ(15)N signature, nodule occupation and bacterial molecular identification analyses. The displacement of native species by molasses grass was associated with changes in the soil N forms, namely the nitrate increased as the ammonium decreased. The latter was the dominant N form in the native species plots, as observed in the soil analysis of total N, ammonium and nitrate contents. The dominant ammonium form was changed to the nitric form by the stimulation of ammonia-oxidising bacteria populations due to the invasive species. Therefore, the key mechanism behind the invasiveness of the exotic grass and the concomitant displacement of the native species may be associated with changes in the soil N chemical species. Based on this finding and on the high N-based soil fertility found in the campo rupestre N fertilisation procedures for restoration of invaded areas should be strictly avoided in this biome.

  3. Tick-borne agents in domesticated and stray cats from the city of Campo Grande, state of Mato Grosso do Sul, midwestern Brazil.

    PubMed

    André, Marcos Rogério; Herrera, Heitor Miraglia; Fernandes, Simone de Jesus; de Sousa, Keyla Cartens Marques; Gonçalves, Luiz Ricardo; Domingos, Iara Helena; de Macedo, Gabriel Carvalho; Machado, Rosangela Zacarias

    2015-09-01

    Anaplasmataceae agents, piroplasmids and Hepatozoon spp. have emerged as important pathogens among domestic and wild felines. The present work aimed to detect the presence of species belonging to the Anaplasmataceae family, piroplasmas and Hepatozoon spp. DNA in blood samples of domesticated and stray cats in the city of Campo Grande, state of Mato Grosso do Sul, midwestern Brazil. Between January and April 2013, whole blood samples were collected from 151 cats (54 males, 95 females and two without gender registration) in the city of Campo Grande, state of Mato Grosso do Sul, Brazil. DNA extracted from cat blood samples was submitted to conventional PCR assays for Theileria/Babesia/Cytauxzoon spp. (18S rRNA, ITS-1), Ehrlichia spp. (16S rRNA, dsb, groESL), Anaplasma spp. (16S rRNA, groESL) and Hepatozoon spp. (18S rRNA) followed by phylogenetic reconstructions. Out of 151 sampled cats, 13 (8.5%) were positive for Ehrlichia spp. closely related to Ehrlichia canis, 1 (0.66%) for Hepatozoon spp. closely related to Hepatozoon americanum and Hepatozoon spp. isolate from a wild felid, 1 (0.66%) for Cytauxzoon sp. closely related do Cytauxzoon felis, and 18 (11.9%) for Babesia/Theileria (one sequence was closely related to Babesia bigemina, eight for Babesia vogeli, five to Theileria spp. from ruminants [Theileria ovis, Theileria lestoquardi] and four to Theileria sp. recently detected in a cat). The present study showed that Ehrlichia spp., piroplasmids (B. vogeli, Theileria spp. and Cytauxzoon spp.) and, more rarely, Hepatozoon spp. circulate among stray and domesticated cats in the city of Campo Grande, state of Mato Grosso do Sul, midwestern Brazil.

  4. [Species from genus Eimeria observed in domestic rabbit (Oryctolagus cuniculus) feces raised at the Municipality of Campos dos Goytacazes in the State of Rio de Janeiro, Brazil].

    PubMed

    de Almeida, Adriana J; Mayen, Friederike L; de Oliveira, Francisco C R

    2006-01-01

    This study was designed to identify species of the genus Eimeria from eleven rabbit meat breeders from Campos dos Goytacazes. Fecal samples were collected from rabbits with different health conditions and consintence of feces. The following species of Eimeria were identified: E. perforans; E. magna; E. coecicola; E. irresidua; E. media; E. flavescens; E. nagpurensis; E. intestinalis, E. exigua and E. stiedae. Parasites from this genus were detected in 81.82% (9) of the rabbit meat production sites, regardless of the management and hygiene conditions. In all cases the infection was always caused from more than one species of Eimeria.

  5. Recent DDT and PCB contamination in the sediment and biota of the Como Bay (Lake Como, Italy).

    PubMed

    Bettinetti, R; Quadroni, S; Boggio, E; Galassi, S

    2016-01-15

    Due to its peculiar geographical and morphological characteristics, Lake Como (Northern Italy) represents an interesting study-case for investigating the sub-basin scale circulation of persistent organic pollutants (POPs) that, despite being banned since the 1970s, have reached surprisingly high concentrations in some southern alpine lakes as a consequence of their release from melting glaciers in recent years. In particular, the Como Bay, which is located in the city of Como, seems noteworthy because its waters have a longer residence time than the other areas of the lake. The analyses of the historical concentration of PCBs, pp′DDT and its metabolites in a sediment core sampled from the Como Bay covering a time-period from their ban to recent times, showed that the DDTs have never experienced a significant (p < 0.05) decrease over time, with concentrations of the most abundant homologue, pp′DDE, ranging from 27 to 75 ng g(-1) d.w. Conversely PCBs significantly (p < 0.05) decreased towards recent times, reaching concentrations around 80 ng g(-1) d.w. The contribution of high altitude and local sources was recorded also in the food web: both zooplankton and the zooplanktivorous fish agone were mainly contaminated by pp′DDE (81.4 ng g(-1) w.w. and 534.6 ng g(-1) w.w. respectively) and by the PCB metabolite hexa-CB (449.7 ng g(-1) w.w. and 1672.1 ng g(-1) w.w. respectively). The DDT concentrations in the agone (sampled during the years 2006–2009) never exceeded the limits for human consumption in Italy, while concentrations of six selected PCBs exceeded human health advisory recommendations in one of the fish samples analysed, when it was approximately two times higher than the recommended value of 125 ng g(-1) w.w.

  6. Seasonal variation of Lutzomyia longipalpis (Lutz & Neiva, 1912) (Diptera: Psychodidae: Phlebotominae) in endemic area of visceral leishmaniasis, Campo Grande, state of Mato Grosso do Sul, Brazil.

    PubMed

    Oliveira, Alessandra Gutierrez; Galati, Eunice Aparecida Bianchi; Fernandes, Carlos Eurico; Dorval, Maria Elizabeth Cavalheiros; Brazil, Reginaldo Peçanha

    2008-01-01

    The seasonal distribution of Lutzomyia longipalpis was studied in two forested and five domiciliary areas of the urban area of Campo Grande; MS, from December 2003 to November 2005. Weekly captures were carried out with CDC light traps positioned on ground and in the canopy inside a residual forest and on the edge (ground) of a woodland and in at least one of the following ecotopes in peridomiciles-a cultivated area, a chicken coop, a pigsty, a kennel, a goat and sheep shelter and an intradomicile. A total of 9519 sand flies were collected, 2666 during the first year and 6853 during the second. L. longipalpis was found throughout the 2-year period, presenting smaller peaks at intervals of 2-3 months and two greater peaks, the first in February and the second in April 2005, soon after periods of heavy rain. Only In one of the woodlands was a significant negative correlation (p<0.05) between the number of insects and temperature during the first year and the climatic factors (temperature, RHA and rain) was observed. In the domiciliary areas in four domiciles some positive correlations (p< or =0.05) occurred in relation to one or more climatic factors; however, the species shows a clear tendency to greater frequency (72%) in the rainy season than in the dry (28%). Thus, we recommend an intensification of the VL control measures applied in Campo Grande, MS, during the rainy season with a view to reducing the risk of the transmission of the disease.

  7. Well-log signatures of alluvial-lacustrine reservoirs and source rocks, Lagoa-Feia Formations, Lower Cretaceous, Campos Basin, offshore Brazil

    SciTech Connect

    Abrahao, D.; Warme, J.E.

    1988-01-01

    The Campos basin is situated in offshore southeastern Brazil. The Lagoa Feia is the basal formation in the stratigraphic sequence of the basin, and was deposited during rifting in an evolving complex of lakes of different sizes and chemical characteristics, overlying and closely associated with rift volcanism. The stratigraphic sequence is dominated by lacustrine limestones and shales (some of them organic-rich), and volcaniclastic conglomerates deposited on alluvial fans. The sequence is capped by marine evaporites. In the Lagoa Feia Formation, complex lithologies make reservoirs and source rocks unsuitable for conventional well-log interpretation. To solve this problem, cores were studied and the observed characteristics related to log responses. The results have been extended through the entire basin for other wells where those facies were not cored. The reservoir facies in the Lagoa Feia Formation are restricted to levels of pure pelecypod shells (''coquinas''). Resistivity, sonic, neutron, density, and gamma-ray logs were used in this work to show how petrophysical properties are derived for the unconventional reservoirs existing in this formation. The same suite of logs was used to develop methods to define geochemical characteristics where source rock data are sparse in the organic-rich lacustrine shales of the Lagoa Feia Formation. These shales are the main source rocks for all the oil discovered to date in the Campos basin.

  8. Hepatitis A seroprevalence in public school children in Campos dos Goytacazes, Rio de Janeiro State, Brazil, prior to the introduction of the hepatitis A universal childhood vaccination.

    PubMed

    Kury, Charbell Miguel; Pinto, Marcelo Alves; Silva, Jaquelline Pereira da; Cruz, Oswaldo Gonçalves; Vitral, Claudia Lamarca

    2016-11-01

    This cross-sectional study was carried out between August 2011 and July 2012 in the city of Campos dos Goytacazes in Rio de Janeiro State, Brazil. Dried blood spot samples were collected on filter paper from 919 individuals between the ages of 1 and 19 and were tested for antibodies against the hepatitis A virus (anti-HAV). The total prevalence was 20.7%, while 94.7% of children under the age of 5 were found to be susceptible to HAV infection. The prevalence of anti-HAV increased with age, reaching 33.3% among individuals aged between 15 and 19, thereby indicating that this municipality has a low level of endemicity for hepatitis A. Age, non-white skin color, accustomed to swimming in the river and more than five people living at home were the factors that were associated with an increase in the chance of a positive anti-HAV result. Mother's education level (secondary or tertiary) was considered a protective factor for HAV infection. The data obtained showed that a large proportion of the children from Campos dos Goytacazes were at risk of HAV infection, which should be minimized with the introduction of the vaccination program against hepatitis A that was launched in the municipality in 2011.

  9. Rift brittle deformation of SE-Brazilian continental margin: Kinematic analysis of onshore structures relative to the transfer and accommodation zones of southern Campos Basin

    NASA Astrophysics Data System (ADS)

    Savastano, Vítor Lamy Mesiano; Schmitt, Renata da Silva; Araújo, Mário Neto Cavalcanti de; Inocêncio, Leonardo Campos

    2017-01-01

    High-resolution drone-supported mapping and traditional field work were used to refine the hierarchy and kinematics of rift-related faults in the basement rocks and Early Cretaceous mafic dikes onshore of the Campos Basin, SE-Brazil. Two sets of structures were identified. The most significant fault set is NE-SW oriented with predominantly normal displacement. At mesoscale, this fault set is arranged in a rhombic pattern, interpreted here as a breached relay ramp system. The rhombic pattern is a penetrative fabric from the thin-section to regional scale. The second-order set of structures is an E-W/ESE-WNW system of normal faults with sinistral component. These E-W structures are oriented parallel with regional intrabasinal transfer zones associated with the earliest stages of Campos Basin's rift system. The crosscutting relationship between the two fault sets and tholeiitic dikes implies that the NE-SW fault set is the older feature, but remained active until the final stages of rifting in this region as the second-order fault set is older than the tholeiitic dikes. Paleostresses estimated from fault slip inversion method indicated that extension was originally NW-SE, with formation of the E-W transfer, followed by ESE-WNW oblique opening associated with a relay ramp system and related accommodation zones.

  10. Analysis of the histomorphologic profile of invasive cutaneous squamous cell carcinoma from 2002 to 2011 in a pathology laboratory in the region of Campos Gerais, Brazil*

    PubMed Central

    de Souza, Fernanda Magri; Baroni, Eloina Do Rocio Valenga; Montemór Netto, Mário Rodrigues

    2017-01-01

    Squamous cell carcinoma is the second most common type of malignant skin cancer. It is also quite aggressive. The increasing incidence of the disease can be altered given its connection with sun exposure. The aim of this study was to establish the clinical and histomorphological profile of squamous cell carcinoma in the region of Campos Gerais, State of Paraná, Brazil and analyze and compare the features of the disease found in the literature. We conducted a cross-sectional descriptive study in a pathology laboratory with selected invasive cutaneous squamous cell carcinoma reports issued after excisional biopsy from January 2002 to December 2011. We selected 374 cases of head and neck SCC, mean age 71.53 years, with a predominance of male patients, moderate degree of histological differentiation, Clark level IV, and absence of perineural, neural, or angiolymphatic invasions. Our results differ on some points from those found in the literature. PMID:28225961

  11. The effect of an oil drilling operation on the trace metal concentrations in offshore bottom sediments of the Campos Basin oil field, SE Brazil.

    PubMed

    Rezende, C E; Lacerda, L D; Ovalle, A R C; Souza, C M M; Gobo, A A R; Santos, D O

    2002-07-01

    The concentrations of Al, Fe, Mn, Zn, Cu, Pb, Ni, Cr, Ba, V, Sn and As in offshore bottom sediments from the Bacia de Campos oil field, SE Brazil, were measured at the beginning and at 7 months after completion of the drilling operation. Concentrations of Al, Fe, Ba, Cr, Ni and Zn were significantly higher closer to the drilling site compared to stations far from the site. Average concentrations of Al, Cu, and in particular of Ni, were significantly higher at the end of the drilling operation than at the beginning. Comparison between drilling area sediments with control sediments of the continental platform, however, showed no significant difference in trace metal concentrations. Under the operation conditions of this drilling event, the results show that while changes in some trace metal concentrations do occur during drilling operations, they are not significantly large to be distinguished from natural variability of the local background concentrations.

  12. Leishmania chagasi in Opossums (Didelphis albiventris) in an Urban Area Endemic for Visceral Leishmaniasis, Campo Grande, Mato Grosso do Sul, Brazil

    PubMed Central

    Humberg, Roberta M. P.; Oshiro, Elisa T.; Cruz, Maria do Socorro Pires e; Ribolla, Paulo E. M.; Alonso, Diego P.; Ferreira, Alda M. T.; Bonamigo, Raquel A.; Tasso, Norton; de Oliveira, Alessandra Gutierrez

    2012-01-01

    We investigated the occurrence of Leishmania infantum chagasi in Didelphis albiventris opossums at a wild animal rehabilitation center in the city of Campo Grande, Brazil. A total of 54 opossums were tested for L. i. chagasi infection in peripheral blood and bone marrow samples. The samples were analyzed by direct examination, culturing in a specific medium, and polymerase chain reaction–restriction fragment length polymorphism. Leishmania i. chagasi DNA was detected by polymerase chain reaction–restriction fragment length polymorphism in 11 (20.37%) animals. A total of 81.81% of positive opossums were captured in areas of known visceral leishmaniasis transmission. These results suggest a role for D. albiventris in the urban transmission of visceral leishmaniasis. PMID:22802435

  13. The advertisement and aggressive calls of Rhinella abei (Baldissera, Caramaschi, and Haddad, 2004) (Anura: Bufonidae) from Campo Largo, Paraná, Brazil.

    PubMed

    Batista, Vinicius Guerra; Ramalho, Werther Pereira; Amaral, Diogo Ferreira Do; Maciel, Natan Medeiros; Bastos, Rogério Pereira

    2016-05-04

    Rhinella abei is a medium-sized species (snout-to-vent length 57.0-76.4 mm in males; 60.4-83.9 mm in females-Baldissera et al. 2004) of the Rhinella crucifer species group, distributed in the Brazilian Atlantic Rainforest, from the State of Paraná to northern Rio Grande do Sul (Frost 2016). It is recorded in forested areas (Conte & Rossa-Feres 2007), or while breeding along forest edges and open habitats. Information on advertisement calls of species in the R. crucifer group is available for R. casconi, R. crucifer, R. inopina and R. ornata (Andrade et al. 2015; Heyer et al. 1990; Oliveira et al. 2014; Roberto et al. 2014). Here we describe the advertisement and aggressive calls of R. abei recorded in the municipality of Campo Largo (25.507472° S, 49.376632° W, datum "WGS84"), southeast State of Paraná, Brazil.

  14. The advertisement call and geographic distribution of Proceratophrys dibernardoi Brandão, Caramaschi, Vaz-Silva & Campos 2013 (Anura, Odontophrynidae).

    PubMed

    Ferreira, Cláudia Márcia Marily; Sugai, José Luiz Massao Moreira; DE Souza, Franco Leandro; DE Andrade, Sheila Pereira; Vaz-Silva, Wilian; Bastos, Rogério Pereira; DE Morais, Alessandro Ribeiro

    2016-12-09

    Proceratophrys dibernardoi Brandão, Caramaschi, Vaz-Silva & Campos 2013 has recently been described and allocated into the P. cristiceps species group, but no information about its advertisement calls has been provided (Brandão et al. 2013). Here, we describe for the first time the advertisement calls of P. dibernardoi based on specimens from Central Brazil. We also expand P. dibernardoi´s geographic distribution by reporting a new population in the State of Mato Grosso do Sul, Brazil, constituting the westernmost record for this species, and extending its known range approximately 330 km westward of the municipality of Aporé, State of Goiás (P. dibernardoi´s former westernmost record).

  15. Levelling Profiles and a GPS Network to Monitor the Active Folding and Faulting Deformation in the Campo de Dalias (Betic Cordillera, Southeastern Spain)

    PubMed Central

    Marín-Lechado, Carlos; Galindo-Zaldívar, Jesús; Gil, Antonio José; Borque, María Jesús; de Lacy, María Clara; Pedrera, Antonio; López-Garrido, Angel Carlos; Alfaro, Pedro; García-Tortosa, Francisco; Ramos, Maria Isabel; Rodríguez-Caderot, Gracia; Rodríguez-Fernández, José; Ruiz-Constán, Ana; de Galdeano-Equiza, Carlos Sanz

    2010-01-01

    The Campo de Dalias is an area with relevant seismicity associated to the active tectonic deformations of the southern boundary of the Betic Cordillera. A non-permanent GPS network was installed to monitor, for the first time, the fault- and fold-related activity. In addition, two high precision levelling profiles were measured twice over a one-year period across the Balanegra Fault, one of the most active faults recognized in the area. The absence of significant movement of the main fault surface suggests seismogenic behaviour. The possible recurrence interval may be between 100 and 300 y. The repetitive GPS and high precision levelling monitoring of the fault surface during a long time period may help us to determine future fault behaviour with regard to the existence (or not) of a creep component, the accumulation of elastic deformation before faulting, and implications of the fold-fault relationship. PMID:22319309

  16. Major controlling factors on hydrocarbon generation and leakage in South Atlantic conjugate margins: A comparative study of Colorado, Orange, Campos and Lower Congo basins

    NASA Astrophysics Data System (ADS)

    Marcano, Gabriela; Anka, Zahie; di Primio, Rolando

    2013-09-01

    We present a supra-regional comparative study of the major internal and external factors controlling source rock (SR) maturation and hydrocarbon (HC) generation and leakage in two pairs of conjugate margins across the South Atlantic: the Brazil (Campos Basin)-Angola (Lower Congo Basin) margins located in the "central segment", and the Argentina (Colorado Basin)-South Africa (Orange Basin) in the "southern segment". Our approach is based on the analysis and integration of borehole data, 1D numerical modeling, 2D seismic reflection data, and published reports. Coupling of modeling results, sedimentation rate calculation and seal-bypass system analysis reveal that: (1) oil window is reached by syn-rift SRs in the southern segment during the Early to Late Cretaceous when thermal subsidence is still active, while in the central segment they reach it in Late-Cretaceous-Neogene during a salt remobilization phase, and (2) early HC generation from post-rift SRs in the southern segment and from all SRs in the central segment appears to be controlled mainly by episodes of increased sedimentation rates. The latter seems to be associated with the Andes uplift history for the western South Atlantic basins (Campos and Colorado) and to a possibly climate-driven response for the eastern South Atlantic basins (Orange and Lower Congo). Additionally, we observe that the effect of volcanism on SR maturation in the southern segment is very local. The comparison of Cretaceous mass transport deposit (MTD) episodes with HC peak of generation and paleo-leakage indicators in the southern segment revealed the possible causal effect that HC generation and leakage have over MTD development. Interestingly, Paleogene leakage indicators, which were identified in the Argentina-South Africa conjugate margins, occur contemporaneously to low sedimentation rate periods. Nonetheless, present-day leakage indicators which were also identified in both pairs of conjugate margins might be related to seal

  17. 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…

  18. Teachers' Perceptions about Oral Corrective Feedback and Their Practice in EFL Classrooms (Percepciones de los docentes acerca de la retroalimentación correctiva y su práctica en las aulas de inglés como lengua extranjera)

    ERIC Educational Resources Information Center

    Hernández Méndez, Edith; Reyes Cruz, María del Rosario

    2012-01-01

    Corrective feedback has been discussed mainly in second language acquisition contexts, but less has been done concerning corrective feedback in foreign language settings. In this descriptive study, conducted at a Mexican university, our aims were to identify the perceptions of instructors of English as a foreign language about corrective feedback…

  19. Evaluation of cross-protection between O1 Manisa and O1 Campos in cattle vaccinated with foot-and-mouth disease virus vaccine incorporating different payloads of inactivated O1 Manisa antigen.

    PubMed

    Nagendrakumar, Singanallur Balasubramanian; Srinivasan, Villuppanoor Alwar; Madhanmohan, Muthukrishnan; Yuvaraj, Shanmugam; Parida, Satya; Di Nardo, Antonello; Horsington, Jacquelyn; Paton, David James

    2011-02-24

    Serology is used to predict vaccine induced protection against challenge with a heterologous strain of the same serotype of foot-and-mouth disease virus (FMDV). To evaluate the accuracy of such predictions, we compared the protection afforded to cattle vaccinated with the O(1) Manisa strain of FMDV against challenge with either a homologous (O(1) Manisa) or a heterologous strain (O(1) Campos). Serology by virus neutralization test (VNT) using O(1) Manisa antiserum predicted an acceptable protection against such a challenge. Two experiments were carried out to compare the results for consistency. A total of 78 naïve cattle were vaccinated with different antigen payloads (60-0.94 μg) of O(1) Manisa. They were challenged by intradermolingual inoculation with live FMDV, either O(1) Manisa or O(1) Campos. Unvaccinated naïve control cattle (n=20) were also challenged with either the O(1) Manisa or O(1) Campos viruses and all developed generalized FMD. The protection results for the vaccinated cattle revealed that higher payloads of O(1) Manisa vaccine were needed to protect against heterologous challenge compared to that for homologous challenge. The 50% protective dose (PD(50)) values for the vaccine in experiments 1 and 2 were found to be 28.78 and 9.44 for the homologous challenge and 3.98 and 5.01 for heterologous challenge. Furthermore, protection against O(1) Campos required a higher level of vaccine-induced antibody against this virus compared to the level of O(1) Manisa neutralizing antibody associated with protection against homologous challenge. The 50% protective level of in vitro neutralizing antibody was found to be log(10)1.827 for O(1) Campos and log(10)0.954 for O(1) Manisa based on O(1) Manisa based virus neutralization test.

  20. [Study of sand flies (Diptera, Psychodidae, Phlebotominae) in the urban area of Campo Grande, Mato Grosso do Sul State, Brazil, from 1999 to 2000].

    PubMed

    de Oliveira, Alessandra Gutierrez; Andrade Filho, José Dilermando; Falcão, Alda Lima; Brazil, Reginaldo Peçanha

    2003-01-01

    From February 1999 to February 2000, sand flies were captured weekly with CDC light traps at five sites in the urban area of Campo Grande, Mato Grosso do Sul State, Brazil. Traps were placed in 11 different ecotopes in the environment (ground level, tree canopies, and forest edge) and the peridomicile (chicken coops and banana trees). A total of 1,245 sand flies were captured, belonging to 28 species: 4 species from genus Brumptomyia Fran a & Parrot, 1921 and 24 from genus Lutzomyia Fran a, 1924. The species were: B. avellari, B. brumpti, B. galindoi, B. pintoi, L. aragaoi, L. bourrouli, L. campograndensis, L. cerradincola, L. christenseni, L. claustrei, L. cortelezzii, L. corumbaensis, L. cruzi, L. damascenoi, L. flaviscutellata, L. hermanlenti, L. lenti, L. longipalpis, L. longipennis, L. migonei, L. punctigeniculata, L. quinquefer, L. renei, L. shannoni, L. sordellii, L. teratodes, L. termitophila, and L. whitmani. L. longipalpis and L. cruzi, vectors of visceral leishmaniasis, and L. whitmani, L. flaviscutellata and L. migonei, vectors of cutaneous leishmaniasis, were captured in the urban area. The most frequent species were L. termitophila, L. aragaoi, L. lenti, L. longipennis, and L. longipalpis.

  1. I-Xe ages of Campo del Cielo silicates as a record of the complex early history of the IAB parent body

    NASA Astrophysics Data System (ADS)

    Pravdivtseva, O.; Meshik, A.; Hohenberg, C. M.; Kurat, G.

    2013-12-01

    Using in situ laser analyses of a polished thin section from the IAB iron meteorite Campo del Cielo, we identified two silicate grains rich in radiogenic 129*Xe, Cr-diopside, and oligoclase, excavated them from the metal, and irradiated them with thermal neutrons for I-Xe dating. The release profiles of 129*Xe and 128*Xe are consistent with these silicates being diopside and oligoclase, with activation energies, estimated using Arrhenius plots, of ˜201 and ˜171 kcal mole-1, respectively. The 4556.4 ± 0.4 Ma absolute I-Xe age of the more refractory diopside is younger than the 4558.0 ± 0.7 Ma I-Xe age of the less refractory oligoclase. We suggest that separate impact events at different locations and depths on a porous initial chondritic IAB parent body led to the removal of the melt and recrystallization of diopside and oligoclase at the times reflected by their respective I-Xe ages. The diopside and oligoclase grains were later brought into the studied inclusion by a larger scale catastrophic collision that caused breakup and reassembly of the debris, but did not reset the I-Xe ages dating the first events. The metal melt most probably was <1250 °C when it surrounded studied silicate grains. This reassembly could not have occurred earlier than the I-Xe closure in diopside at 4556.4 ± 0.4 Ma.

  2. Hamacantha (Hamacantha) boomerang sp. nov. from deep-sea coral mounds at Campos Basin, SW Atlantic, and redescription of H. (H.) schmidtii (Carter, 1882) (Hamacanthidae, Poecilosclerida, Demospongiae).

    PubMed

    Hajdu, Eduardo; Castello-Branco, Cristiana

    2014-01-08

    There are 22 species of Hamacantha registered from all over the world, and frequently from deep-waters, only two of which had previously been reported from the SW Atlantic. Here we describe a third species for this area, Hamacantha (H.) boomerang sp. nov., collected from deep-sea coral mounds at Campos Basin (off Rio de Janeiro state). We found oxeas 271-630 µm long, diancistras in three size classes, 125-155, 45-69 and 20-29 µm, and toxas, 58-82 µm. This is the only Hamacantha combining oxeas and toxas, but the latter are very rare. The species approaches the Caribbean H. (H.) schmidtii (Carter, 1882), where we observed oxeas 390-495 µm long, and diancistras in three size classes, 109-124,  44-54 and 26-41 μm, however toxas appear to be absent. Both species are clearly distinct by micrometric values, as well as the overall morphology of the smaller diancistras, distinct from the intermediate category in the new species, but quite similar in H. (H.) schmidtii. Hamacantha (Vomerula) falcula approaches the new species very closely in microsclere dimensions and morphology, but is set apart by its styloid and smaller megascleres.

  3. [Unified National Health System costs in São José dos Campos, São Paulo State, Brazil, for hospital admissions due to external causes].

    PubMed

    Melione, Luís Paulo Rodrigues; Mello-Jorge, Maria Helena Prado de

    2008-08-01

    The objective of this study was to identify direct expenditures for hospitalizations due to external causes in the Unified National Health System (SUS) in the city of São José dos Campos, São Paulo State, Brazil. Admissions to the Dr. José de Carvalho Florence Municipal Hospital resulting from external causes or injuries - ICD-10, chapters XIX and XX respectively - were analyzed for the first semester of 2003. 976 patient admission forms were analyzed, after data evaluation. Admissions with the highest total cost were those resulting from motor vehicle accidents and falls. The highest mean cost for hospitalization for injury was due to motor vehicle accidents (BRL 614.63), followed by assault (BRL 594.90). The highest mean cost for hospitalization due to injury was for cervical fractures (BRL 1,191.42) and head injuries (BRL 1,000.44). Hospitalizations with the highest daily cost were skull and facial fractures (BRL 166.72) and abdominal trauma (BRL 148.26). The study confirmed that motor vehicle accidents, falls, and assault are an important source of costs due to hospitalization for injuries.

  4. Distribution and mineralogy of platinum-group elements in altered chromitites of the Campo Formoso layered intrusion (Bahia State, Brazil): control by magmatic and hydrothermal processes

    NASA Astrophysics Data System (ADS)

    Garuti, G.; Proenza, J. A.; Zaccarini, F.

    2007-03-01

    Polyphase, penetrative hydrothermal metasomatism in chromitites of the Campo Formoso layered intrusion produced spectacular chromite - ferrian chromite zoning and transformed the primary intercumulus silicates into a chlorite - serpentine - carbonate - talc assemblage. Alteration did not substantially modify the composition of chromite cores and the distribution of platinum-group elements (PGE) through the sequence of chromitite layers, which still are consistent with magmatic fractionation processes. Texture and composition of laurite and Os-Ir-Ru alloys included in chromite cores indicate that these PGM were not altered, and are probably magmaticin origin. In contrast, the PGM located in the intergranular chlorite matrix (laurite, Ir-Ru-Rh sulfarsenides and Pt-Pd compounds with Sb, Bi and Te) display evidence of hydrothermal reworking. These PGM are intimately intergrown with low-temperature Ni-sulfides. The paragenesis suggests that the Ni-sulfides-PGM assemblage formed at the expenses of unknown PGM precursors, which must have been originally present in the intercumulus silicate matrix. Mechanism of formation involves a sequence of dissolution-precipitation events controlled by variation of redox conditions during chromite alteration. The presence of a secondary ore mineral assemblage consisting of galena, bismuthinite, native antimony, and various Pb-Sb compounds suggests a possible contribution of fluids derived from the adjacent granite.

  5. Prevalence of intestinal parasites versus knowledge, attitudes, and practices of inhabitants of low-income communities of Campos dos Goytacazes, Rio de Janeiro State, Brazil.

    PubMed

    de Moraes Neto, Antonio Henrique A; Pereira, Adriana P M F; Alencar, Maria de Fátima L; Souza, Paulo R B; Dias, Rodrigo C; Fonseca, Juliana G; Santos, Clóvis P; Almeida, João C A

    2010-07-01

    Intestinal parasites are the causative agents of common infections responsible for significant public health problems in developing countries and generally linked to lack of sanitation, safe water, and improper hygiene. More than two billion people throughout the world live with unrelenting illness due to intestinal parasitic infections (IPIs). The purposes of this study are to assess knowledge, attitudes, and practices on IPIs and investigate the relationship with prevalence of intestinal parasites among a low-income group of inhabitants from two communities of the Travessão District area, Campos dos Goytacazes, north of Rio de Janeiro State, Brazil. The two communities are known as "Parque Santuário," which is an urban slum with miserable living conditions, and "Arraial," where the socioeconomic and educational levels are better, neither having a sanitary infrastructure with an excreta collection system. Questionnaires revealed that both communities had local and specific codification to denominate the intestinal parasites and present correct knowledge on the theme but ignored some aspects of IPI transmission, with the Arraial population being better informed (p < 0.05). The overall prevalence of IPIs in Parque Santuário (49.7%) was greater than in Arraial (27.2%) (p < 0.001; prevalence ratio/95% confidence interval 1.83/1.50-2.23). This study reports the real IPI situation in the Travessão District and also reinforces the need to continue the investigation on the impact of combined prophylactic methods, educational measures, and socioeconomic and sanitary improvements by governmental authorities and the local popular organization.

  6. Effects of non-aqueous fluids-associated drill cuttings discharge on shelf break macrobenthic communities in the Campos Basin, Brazil.

    PubMed

    Santos, Maria Fernanda L; Silva, Janete; Fachel, Jandyra M G; Pulgati, Fernando H

    2010-08-01

    This paper assesses the effects of non-aqueous fluids (NAF)-associated drill cuttings discharge on shelf break macrobenthic communities in the Campos Basin, off the southeast Brazilian coast, Rio de Janeiro State. Samples were taken with a 0.25-m2 box corer from surrounding two oil and gas wells on three monitoring cruises: before drilling, three months after drilling, and 22 months after drilling. Statistical methodologies used Bayesian geostatistical and analysis of variance models to evaluate the effects of the NAF-associated drill cuttings discharge and to define the impact area. The results indicated that marked variations were not observed in the number of families between cruises, though there were changes in the fauna composition. The changes seen in biological descriptors in both control and background situation areas were not considered significant, showing a temporal homogeneity in means. The impact area presented changes in biological descriptors of communities and trophic structure during the three cruises and such changes were correlated to chemical and physical variables related to the drilling activities, as a result of the mix of drill cuttings and sediment and the anoxic conditions established in the substrate. In that area, three months after drilling, a decrease in diversity and an increase in density, motile deposit-feeders and Pol/Crp ratio, and dominance of opportunistic organisms, such as the capitellid Capitella sp., were observed and, 22 months after drilling, an increase of diversity, reduction of dominance of capitellid polychaete, changes in the fauna composition, and a dominance of opportunistic burrowing and tube-building organisms were observed, indicating an ecological succession process.

  7. Techniques of remote sensing applied to the environmental analysis of part of an aquifer located in the São José dos Campos Region sp, Brazil.

    PubMed

    Bressan, Mariana Affonseca; Dos Anjos, Célio Eustáquio

    2003-05-01

    The anthropogenic activity on the surface can modify and introduce new mechanisms of recharging the groundwater system, modifying the tax, the frequency and the quality of recharge of underground waters. The understanding of these mechanisms and the correct evaluation of such modifications are fundamental in determining the vulnerability of groundwater contamination. The groundwater flow of the South Paraíba Compartment, in the region of São José dos Campos, São Paulo, is directly related to structural features of the Taubaté Basin and, therefore, the analysis of its behaviour enhances the understanding of tectonic structure. The methodology adopted for this work consists in pre-processing and processing of the satellite images, visual interpretation of HSI products, field work and data integration. The derivation of the main structural features was based on visual analysis of the texture elements of drainage, and the relief in sedimentary and crystalline rocks. Statistical analysis of the feature densities and the metric-geometric relations between the analysed elements have been conducted. The crystalline rocks, on which the sediments were laying, conditions and controls the structural arrangement of sedimentary formations. The formation of the South Paraíba Grabén is associated with Cenozoic distensive movement which reactivated old features of crust weakness and generated previous cycles with normal characteristics. The environmental analysis is based on the integration of the existing methodology to characterise vulnerability of an universal pollutant and density fracture zone. The digital integration was processed using GIS (Geographic Information System) to delineate five defined vulnerability classes. The hydrogeological settings were analysed in each thematic map and, using fuzzy logic, an index for each different vulnerability class was compiled. Evidence maps could be combined in a series of steps using map algebra.

  8. Concentrations and isotope ratios of mercury in sediments from shelf and continental slope at Campos Basin near Rio de Janeiro, Brazil.

    PubMed

    Araujo, Beatriz Ferreira; Hintelmann, Holger; Dimock, Brian; Almeida, Marcelo Gomes; Rezende, Carlos Eduardo

    2017-07-01

    Mercury (Hg) may originate from both anthropogenic and natural sources. The measurement of spatial and temporal variations of Hg isotope ratios in sediments may enable source identification and tracking of environmental processes. In this study we establish the distribution of mercury concentrations and mercury isotope ratios in surface sediments of three transects along the continental shelf and slope in Campos Basin-RJ-Brazil. The shelf showed on average lower total Hg concentrations (9.2 ± 5.3 ng g(-1)) than the slope (24.6 ± 8.8 ng g(-1)). MMHg average concentrations of shelf 0.15 ± 0.12 ng g(-1) and slope 0.13 ± 0.06 ng g(-1) were not significantly different. Distinct differences in Hg isotope ratio signatures were observed, suggesting that the two regions were impacted by different sources of Hg. The shelf showed more negative δ(202)Hg and Δ(199)Hg values ranging from -0.59 to -2.19‰ and from -0.76 to 0.08‰, respectively. In contrast, the slope exhibited δ(202)Hg values from -0.29 to -1.82‰ and Δ(199)Hg values from -0.23 to 0.09‰. Mercury found on the shelf, especially along the "D" and "I" transects, is depleted in heavy isotopes resulting in more negative δ(202)Hg compared to the slope. Isotope ratios observed in the "D" and "I" shelf region are similar to Hg ratios commonly associated with plants and vegetation and very comparable to those detected in the estuary and adjoining mangrove forest, which suggests that Hg exported from rivers may be the dominating source of Hg in near coastal regions along the northern part of the shelf.

  9. [Geography, health and urban development in São Paulo state at the turn of the twentieth century: Domingos Jaguaribe and the construction of the Climate Resort of Campos do Jordão].

    PubMed

    Vianna, Paula V Carnevale; Zanetti, Valéria; Papali, Maria Aparecida

    2014-01-01

    The resort towns created in the early 1900s are prime objects for studying the relationship between public health policies and urban and social development. This article analyzes the social and institutional vectors involved in the creation of the resort town of Campos do Jordão from the perspective of the career and works of physician, geographer and businessman Domingos Nogueira Jaguaribe Filho. Geographical studies, medical knowledge and the precepts of urbanization combined with private and development interests in the symbolism and concrete manifestation of the "Brazilian Switzerland".

  10. [Geography, health and urban development in São Paulo state at the turn of the twentieth century: Domingos Jaguaribe and the construction of the Climate Resort of Campos do Jordão.

    PubMed

    Vianna, Paula V Carnevale; Zanetti, Valéria; Papali, Maria Aparecida

    2014-11-07

    The resort towns created in the early 1900s are prime objects for studying the relationship between public health policies and urban and social development. This article analyzes the social and institutional vectors involved in the creation of the resort town of Campos do Jordão from the perspective of the career and works of physician, geographer and businessman Domingos Nogueira Jaguaribe Filho. Geographical studies, medical knowledge and the precepts of urbanization combined with private and development interests in the symbolism and concrete manifestation of the "Brazilian Switzerland".

  11. 78 FR 38287 - Bitterroot National Forest, Darby Ranger District, Como Forest Health Project

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-26

    ... Forest Service Bitterroot National Forest, Darby Ranger District, Como Forest Health Project AGENCY: Forest Service. ACTION: Notice; Correction. SUMMARY: The Department of Agriculture (USDA), Forest Service, Bitterroot National Forest, Darby Ranger District published a document in the Federal Register of June...

  12. Cúmulos globulares como trazadores de bimodalidad estelar en galaxias cD

    NASA Astrophysics Data System (ADS)

    Forte, J. C.

    Se muestra que tanto la forma de los perfiles de brillo como de color observados en dos galaxias arquetípicas de tipo cD (NGC 1399 y NGC 4486) son compatibles con la presencia de poblaciones estelares bi-modales que comparten la misma distribución espacial y composición química de las familias dominantes de cúmulos globulares asociadas con ellas. El modelo resultante también predice una variación de la frecuencia específica de los cúmulos como función del radio galactocéntrico. Se discute este resultado en el contexto de una variedad de escenarios astrofísicos que intentan describir la formación de galaxias cD.

  13. Recrudescence of onchocerciasis in the Comoé valley in Southwest Burkina Faso.

    PubMed

    Koala, Lassane; Nikiema, Achille; Post, Rory J; Paré, Alain Brice; Kafando, Claude Montant; Drabo, François; Traoré, Soungalo

    2017-02-01

    Onchocerciasis control by vector control was instigated in southwest Burkina Faso in January 1969 by ORSTOM/OCCGE, and continued until operations were taken over by the WHO Onchocerciasis Control Programme (OCP) in February 1975, which itself ceased operations in the area in 1989 when onchocerciasis was judged to have been reduced to insignificant levels. Initially (1969-1975) vector immigration maintained unacceptably high levels of transmission, but OCP was much larger than the preceding campaign and in 1975 the Annual Transmission Potential (ATP) dropped below 100 at all sites in the Comoé river valley except Folonzo, which continued to be subject to reinvasion, along with the whole of the Léraba river valley. However, after the southern extension of the OCP in 1979, ATPs dropped below 100 everywhere in the Comoé basin (including the Léraba valley), and further dropped to insignificant levels after the western extension of the OCP in 1985. Thus transmission dropped more quickly in the Comoé river valley than the Léraba river valley (which had been subject to vector reinvasion), and this was also reflected in prevalence of microfilaraemia in the human population. After 1986 prevalence was less than 5% in all villages in the Comoé river valley (except for two, which subsequently dropped to 0% and 3.7% by 1999). However, in 2001 (12 years after the cessation of vector control) the prevalence in one village in the Comoé river valley had increased to 39.6%, and two more had increased above 5% by 2007. New epidemiological surveys in 2011 and 2012 showed that in 13 out of 30 villages in the Comoé river valley prevalence of microfilaraemia was above 5%, although this was not observed in the Léraba river valley where prevalence remained low. This is the first documented case of recrudescence of onchocerciasis in the old OCP area, and the reasons are not clear. It is possible that there has been immigration of parasites with humans or vectors from areas where

  14. A Study of Near-Surface Seismic Methods on Terrain Susceptible to Landslides in the City of Campos do Jordão, State of São Paulo, Brazil.

    NASA Astrophysics Data System (ADS)

    Shams, B. S.

    2015-12-01

    This study seeks to prove the usefulness of near-surface seismic methods as complementary data to conventional geotechnical and geological data in the characterization of areas of landslide risk. The setting is located in a low income housing neighborhood in the city of Campos do Jordão, state of São Paulo, Brazil. The area was devastated by numerous landslides between December 1999 to January 2000 after heavy rainfall in the area. Currently the area is being monitored by the National Center for Monitoring and Warning of Natural Disasters (CEMADEN). The landslides in this area are known to be shallow. The survey line passes within a couple feet of the CEMADEN monitoring station which measures soil temperature, soil moisture, rainfall intensity, and rainfall accumulation (Mendes et. al 2015). Refraction and Multi-channel Analysis of Surface Waves (MASW) surveys were performed. In order to better identify the fundamental mode of the Rayleigh wave, separate surveys isolating the vertical and radial components of the Rayleigh wave were performed. By comparing the obtained Shear wave (Vs) and Compressional wave (Vp) profiles with the already known geotechnical data provided by CEMADEN and geological data from a previous study (Ahrendt 2005) of the site a better understanding of the geological interfaces that constitute the landslide prone area is obtained.

  15. Automatic scaling of critical frequency foF2 from ionograms recorded at São José dos Campos, Brazil: a comparison between Autoscala and UDIDA tools

    NASA Astrophysics Data System (ADS)

    Pezzopane, Michael; Pillat, Valdir Gil; Fagundes, Paulo Roberto

    2017-02-01

    This paper considers a dataset of ionograms recorded by the CADI ionosonde installed at São José dos Campos (SJC; 23.2°S, 45.9°W, magnetic latitude 14.1°S), Brazil, to compare two autoscaling systems: Autoscala, developed by the Istituto Nazionale di Geofisica e Vulcanologia, and the UDIDA-scaling, developed by the Universidade do Vale do Paraíba. The analysis, focused on the critical frequency of the F2 layer, foF2, shows that the two systems work differently. The UDIDA-scaling gives always a value of foF2 as output, regardless of the presence of the ionogram trace and its definition, while Autoscala tends to reject ionograms for which the digital information is considered insufficient. As a consequence, the UDIDA-scaling can autoscale more foF2 values than Autoscala, but Autoscala can discard a larger number of ionograms for which the trace is unidentifiable. Discussions are made on the accuracy of the foF2 values given as output, as well as on the main shortcomings characterizing the two systems.

  16. Ajuste de parámetros libres en teorías de campos camaleones a partir de espectros de nubes moleculares galácticas y experimentos terrestres

    NASA Astrophysics Data System (ADS)

    Teppa Pannia, F. A.; Landau, S. J.

    Resultados recientes, basados en el análisis de espectros moleculares de nubes galácticas a través del método del amoníaco, han arrojado nuevos límites sobre la variación del parámetro adimensional μ=m_e /m_p. Los resultados indican Δ μ/μ = (μ_{obs}-μ_{lab})/μ_{lab}= (2.2± 0.4_{est} ±0.3_{sist}) times 10 ^{-8}, en acuerdo con una variación no nula de dicha cantidad (Levshakov et al. 2010). En este trabajo, motivado por los datos astronómicos, estudiamos la solución lineal del modelo teórico fenomenológico de campo escalar camaleón, presentado por Mota y Shaw (2007), que predice variaciones en μ. Con el fin de cotejar estas predicciones con los resultados observacionales, utilizamos datos de experimentos terrestres que testean violaciones al Principio de Equivalencia para analizar el valor de los parámetros libres presentes en el modelo. El trabajo realizado muestra que la solución estudiada no se puede ajustar a los datos experimentales, sugiriendo que el modelo lineal debe ser descartado para explicar las observaciones astronómicas. FULL TEXT IN SPANISH

  17. Lactic acid microbiota identification in water, raw milk, endogenous starter culture, and fresh Minas artisanal cheese from the Campo das Vertentes region of Brazil during the dry and rainy seasons.

    PubMed

    Castro, R D; Oliveira, L G; Sant'Anna, F M; Luiz, L M P; Sandes, S H C; Silva, C I F; Silva, A M; Nunes, A C; Penna, C F A M; Souza, M R

    2016-08-01

    Minas artisanal cheese, produced in the Campo das Vertentes region of Brazil, is made from raw milk and endogenous starter cultures. Although this cheese is of great historical and socioeconomic importance, little information is available about its microbiological and physical-chemical qualities, or about its beneficial microbiota. This work was aimed at evaluating the qualities of the cheese and the components used for its production, comparing samples collected during the dry and rainy seasons. We also conducted molecular identification and isolated 50 samples of lactic acid bacteria from cheese (n=21), water (n=3), raw milk (n=9), and endogenous starter culture (n=17). The microbiological quality of the cheese, water, raw milk, and endogenous starter culture was lower during the rainy period, given the higher counts of coagulase-positive Staphylococcus and total and thermotolerant coliforms. Enterococcus faecalis was the lactic acid bacteria isolated most frequently (42.86%) in cheese samples, followed by Lactococcus lactis (28.57%) and Lactobacillus plantarum (14.29%). Lactobacillus brevis (5.88%), Enterococcus pseudoavium (5.88%), Enterococcus durans (5.88%), and Aerococcus viridans (5.88%) were isolated from endogenous starter cultures and are described for the first time in the literature. The lactic acid bacteria identified in the analyzed cheeses may inhibit undesirable microbiota and contribute to the safety and flavor of the cheese, but this needs to be evaluated in future research.

  18. Fluid dipping technology of chimpanzees in Comoé National Park, Ivory Coast.

    PubMed

    Lapuente, Juan; Hicks, Thurston C; Linsenmair, K Eduard

    2016-12-21

    Over a 6 month period during the dry season, from the end of October 2014 to the beginning of May 2015, we studied tool use behavior of previously unstudied and non-habituated savanna chimpanzees (Pan troglodytes verus) living in the Comoé National Park, Ivory Coast (CI). We analyzed all the stick tools and leaf-sponges found that the chimpanzees used to forage for ants, termites, honey, and water. We found a particular behavior to be widespread across different chimpanzee communities in the park, namely, dipping for water from tree holes using sticks with especially long brush-tip modifications, using camera traps, we recorded adults, juveniles, and infants of three communities displaying this behavior. We compared water dipping and honey dipping tools used by Comoé chimpanzees and found significant differences in the total length, diameter, and brush length of the different types of fluid-dipping tools used. We found that water dipping tools had consistently longer and thicker brush-tips than honey dipping tools. Although this behavior was observed only during the late dry season, the chimpanzees always had alternative water sources available, like pools and rivers, in which they drank without the use of a tool. It remains unclear whether the use of a tool increases efficient access to water. This is the first time that water dipping behavior with sticks has been found as a widespread and well-established behavior across different age and sex classes and communities, suggesting the possibility of cultural transmission. It is crucial that we conserve this population of chimpanzees, not only because they may represent the second largest population in the country, but also because of their unique behavioral repertoire.

  19. Molecular Characterization of Human Pathogenic Bunyaviruses of the Nyando and Bwamba/Pongola Virus Groups Leads to the Genetic Identification of Mojuí dos Campos and Kaeng Khoi Virus

    PubMed Central

    Groseth, Allison; Mampilli, Veena; Weisend, Carla; Dahlstrom, Eric; Porcella, Stephen F.; Russell, Brandy J.; Tesh, Robert B.; Ebihara, Hideki

    2014-01-01

    Background Human infection with Bwamba virus (BWAV) and the closely related Pongola virus (PGAV), as well as Nyando virus (NDV), are important causes of febrile illness in Africa. However, despite seroprevalence studies that indicate high rates of infection in many countries, these viruses remain relatively unknown and unstudied. In addition, a number of unclassified bunyaviruses have been isolated over the years often with uncertain relationships to human disease. Methodology/Principal Findings In order to better understand the genetic and evolutionary relationships among orthobunyaviruses associated with human disease, we have sequenced the complete genomes for all 3 segments of multiple strains of BWAV (n = 2), PGAV (n = 2) and NDV (n = 4), as well as the previously unclassified Mojuí dos Campos (MDCV) and Kaeng Khoi viruses (KKV). Based on phylogenetic analysis, we show that these viruses populate 2 distinct branches, one made up of BWAV and PGAV and the other composed of NDV, MDCV and KKV. Interestingly, the NDV strains analyzed form two distinct clades which differed by >10% on the amino acid level across all protein products. In addition, the assignment of two bat-associated bunyaviruses into the NDV group, which is clearly associated with mosquito-borne infection, led us to analyze the ability of these different viruses to grow in bat (RE05 and Tb 1 Lu) and mosquito (C6/36) cell lines, and indeed all the viruses tested were capable of efficient growth in these cell types. Conclusions/Significance On the basis of our analyses, it is proposed to reclassify the NDV strains ERET147 and YM176-66 as a new virus species. Further, our analysis definitively identifies the previously unclassified bunyaviruses MDCV and KKV as distinct species within the NDV group and suggests that these viruses may have a broader host range than is currently appreciated. PMID:25188437

  20. Stable Fly Project in Campo Grande, Brazil

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Andrew Li, Jerry Hogsette, and Adalberto Pérez de León, all USDA-ARS, and Lane Foil, LSU, are collaborating as consultants on an Embrapa-funded research project for the control of large stable fly populations associated with sugar cane production in Brazil. Our Brazilian counterpart, Dr. Paulo Cança...

  1. Stable Fly Project in Campo Grande, Brazil

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Andrew Li, Jerry Hogsette, and Beto Perez de Leon, all USDA, and Lane Foil, LSU, are collaborating as consultants on an Embrapa-funded research project for the control of large stable fly populations associated with sugar cane production in Brazil. Our Brazilian counterpart, Dr. Paulo Cançado, is t...

  2. Vulnerability and adaptation to climate change in the Comoe River Basin (West Africa).

    PubMed

    Yéo, Wonnan Eugène; Goula, Bi Tié Albert; Diekkrüger, Bernd; Afouda, Abel

    2016-01-01

    Climate change is impacting water users in many sectors: water supply, farming, industry, hydropower, fishing, housing, navigation and health. Existing situations, like population growth, movement of populations from rural to urban areas, poverty and pollution can aggravate the impacts of climate change. The aim of the study is to evaluate the vulnerability of different water user groups to climate change and define communities' adaptation strategies in the Comoe River Basin. Information was collected on communities' concerns and perception on changes in climate and potential adaptation measures and strategies. Results show that 95 % of the sample in the study communities had heard of it and are aware that climate change is occurring. They have been experiencing changes in economic activity and cropping pattern, reduced water level in rivers, crop failure, delay in cropping season, new pests and diseases, food insecurity, drop in income and decline in crop yield. Results also show that communities employ various adaptation strategies including crops diversification, substitution and calendar redefinition, agroforestry, borrowing from friends and money lenders and increasing fertilizer application.

  3. Kinetic modeling of the SWNT growth by CO disproportionation on CoMo catalysts.

    PubMed

    Monzon, A; Lolli, G; Cosma, S; Mohamed, S B; Resasco, D E

    2008-11-01

    A kinetic model has been developed to describe the growth of single-walled carbon nanotubes (SWNT) in the CoMoCAT method, which is based on the disproportionation of CO on supported CoMo catalysts. The model attempts to capture mathematically the different stages involved in this method: (i) catalyst activation or in-situ creation of active sites, i.e., reduced Co clusters by transformation of CoMoOx precursor species, or oxidized sites; (ii) CO decomposition over active sites, which increases the surface fugacity of carbon until reaching a certain threshold; (iii) nucleation of ordered forms of carbon; (iv) C diffusion (both across the surface and into the metal particle); (v) SWNT growth; (vi) termination, by either deactivation of the catalyst active sites or by increase in the carbon concentration at the metal/SWNT interface, approaching that of the metal/gas interface and eliminating the driving force for diffusion. Previous investigations have only explained the growth termination by the former. Here, we emphasize the possible contribution of the later and propose a novel "hindrance factor" to quantify the effect of nanotube interaction with its surroundings on the growth termination. To test the kinetic model and obtain typical values of the physical parameters, experiments have been conducted on a CoMo/SiO2 catalyst in a laboratory flow reactor, in which the rate of carbon deposition was continuously evaluated by the direct measurement of the CO2 evolution as a function of time. The experimental data are fitted very well with model.

  4. DIABETES MELLITUS COMO FACTOR DE RIESGO DE DEMENCIA EN LA POBLACIÓN ADULTA MAYOR MEXICANA

    PubMed Central

    Silvia, Mejía-Arango; Clemente, y Zúñiga-Gil

    2012-01-01

    Introduccion La diabetes mellitus y las demencias constituyen dos problemas crecientes de salud entre la población adulta mayor del mundo y en particular de los paises en desarrollo. Hacen falta estudios longitudinales sobre el papel de la diabetes como factor de riesgo para demencia. Objetivo Determinar el riesgo de demencia en sujetos Mexicanos con diabetes mellitus tipo 2. Materiales y Metodos Los sujetos diabéticos libres de demencia pertenecientes al Estudio Nacional de Salud y Envejecimiento en México fueron evaluados a los dos años de la línea de base. Se estudió el papel de los factores sociodemográficos, de otras comorbilidades y del tipo de tratamiento en la conversión a demencia. Resultados Durante la línea de base 749 sujetos (13.8%) tuvieron diabetes. El riesgo de desarrollar demencia en estos individuos fue el doble (RR, 2.08 IC 95%, 1.59–2.73). Se encontró un riesgo mayor en individuos de 80 años y más (RR 2.44 IC 95%, 1.46–4.08), en los hombres (RR, 2.25 IC 95%, 1.46–3.49) y en sujetos con nivel educativo menor de 7 años. El estar bajo tratamiento con insulina incrementó el riesgo de demencia (RR, 2.83, IC 95%, 1.58–5.06). Las otras comorbilidades que aumentaron el riesgo de demencia en los pacientes diabéticos fueron la hipertensión (RR, 2.75, IC 95%, 1.86–4.06) y la depresión (RR, 3.78, 95% IC 2.37–6.04). Conclusión Los sujetos con diabetes mellitus tienen un riesgo mayor de desarrollar demencia, La baja escolaridad y otras comorbilidades altamente prevalentes en la población Mexicana contribuyen a la asociación diabetes-demencia. PMID:21948010

  5. Alejarse como proceso social: niños y ancianos «abandonados» en Ayacucho1

    PubMed Central

    Leinaweaver, Jessaca

    2013-01-01

    En investigaciones previas sobre el acogimiento familiar y la adopción en Ayacucho, se ha podido descubrir cómo los ayacuchanos adquieren y producen relaciones sociales. Mientras negocian creativamente los discursos y espacios construidos simultáneamente por instituciones, comunidades, y estructuras sociales, van adquiriendo nuevas formas de relacionarse. Este artículo discute el proceso opuesto: el deshacerse de relaciones de parentesco, y el proceso social del abandono o alejamiento. Cuando se aleja a una persona de su familia o su comunidad, los que se quedan en ella llegan a entenderse como ciertos tipos de personas. En los estudios de caso discutidos aquí, recopilados a través de una detallada y cuidadosa observación participante y de entrevistas etnográficas grabadas entre 2001 y 2007, se puede ver cómo, después de un alejamiento social, los individuos que alejan se reinterpretan como sujetos que se encuentran superándose o volviéndose modernos, o bien sacrificándose. PMID:25177044

  6. Late Glacial to Holocene environmental variabilities: A new multi-proxy paleolimnological study of sedimentary sequences from Como (northern Italy)

    NASA Astrophysics Data System (ADS)

    Höbig, N.; Martinelli, E.; Motella, S.; Michetti, A. M.; Livio, F.; Tinner, W.; Reicherter, K.; Castelletti, L.

    2012-04-01

    Lake Como (northern Italy) is the deepest Italian lake, reaching a depth of about 425 m. The lambda-shaped lake expands about 45 km in NE-SW direction. Southwards of the hydrologically closed western branch, two sediment cores of 70 m (S1) and 65 m length (S2) were taken in the year 2005 close to the cathedral of Como (Piazza Verdi). The drilling sites are located in the middle of the Southern Alps, some 300 m from the present-day lakeshore. The cores provide the first detailed Late Glacial to Holocene multi-proxy record for the Lake Como basin. Our research is aimed at investigating the environmental and geological evolution of the Insubria Region. The multi-proxy study of the stratigraphic sequences contain geophysical, geotechnical, sedimentological, paleobotanical, and radiocarbon analyses. They have been performed for core S1 and are still in progress on core S2. With this data the working group focuses on two main issues. The first topic is the reconstruction of the natural and anthropogenic processes controlling the ground subsidence in the Como urban area (e.g., Comerci et al., 2007) and another aim is to reconstruct vegetation and land-use dynamics. In particular, 150 samples of vegetal macroremains have been collected in the palustrine deposits along S1 core, down to 31,00 m. Below this depth (dated 14C 12,496 ± 55 yr BP - 15,050 - 14,250 cal yr BP), the amount of plant macroremains in the sediment drops dramatically. The taxonomic determination was carried out on more than 800 macroremains. They are represented by fragments of wood, leaves, needles, seeds, fruits, mosses and tiny charcoals (Motella, 2009, unpublished PhD Thesis). Picea/Larix, Pinus sp., Juniperus with Betula, found in the deeper levels (30.80 - 30.00 m), are the first arboreal taxa that colonized the shores of Lake Como, and show that the reforestation began in this area about 16,000 years ago. During the early Holocene (25.10 m) Abies alba expanded and further upwards the sequence

  7. A Utilização da Astronomia como Tema Interdisciplinar e Aplicações de Objetos de Aprendizagem

    NASA Astrophysics Data System (ADS)

    da Silva, L. A.; Voelzke, M. R.

    2008-09-01

    Este trabalho visa analisar a possibilidade de relacionar conteúdos aplicados no ensino fundamental e médio de forma interdisciplinar por intermédio da astronomia, com a intervenção de objetos de aprendizagem que possam integrar as disciplinas e a utilização de recursos tecnológicos. Em uma pesquisa prévia com 20 professores de uma escola estadual situada na cidade de Guarulhos foi observado que apenas 25% dos professores utilizam algum recurso tecnológico para o desenvolvimento de conteúdos pertinentes à sua disciplina, tais como sites e softwares educativos, sendo que a maioria absoluta continua ensinando apenas com livros didáticos. A maior parte dos professores apresenta dificuldades em trabalhar sua disciplina de forma interdisciplinar, ou seja, 75% dos professores preferem aplicar os conteúdos seguindo uma hierarquia linear de tópicos, evitando a discussão de temas que de alguma forma estão relacionados. A astronomia pode vir à fascinar o ser humano e despertar sua curiosidade promovendo um maior interesse no aprendizado, podendo favorecer análises interdisciplinares de forma lógica e objetiva, desta forma colocar a astronomia como tema motivador interdisciplinar, pode ser relevante no que se refere ao distanciamento da fragmentação dos conteúdos. No Estado de São Paulo, a implantação da proposta curricular no ensino fundamental e médio mostra claramente a inserção da astronomia na maior parte das séries, principalmente na 6ª série em que todo o bimestre se fala de astronomia.

  8. In-situ HRTEM study of the reactive carbide phase of Co/MoS2 catalyst.

    PubMed

    Ramos, Manuel; Ferrer, Domingo; Martinez-Soto, Eduan; Lopez-Lippmann, Hugo; Torres, Brenda; Berhault, Gilles; Chianelli, Russell R

    2013-04-01

    Hydrotreatment catalytic operations are commonly performed industrially by layered molybdenum sulfide promoted by cobalt or nickel in order to remove heteroelements (S, N, O) from fossil fuels and biofuels. Indeed, these heteroelements are responsible of the emission of pollutants when these fuels are used in vehicles. In this respect, previous studies made by our research group have shown that the active phase under steady state conditions is partially carbided while strong bending effects of MoS2 slabs were also observed. However, up to now, the morphology of the resulting Co/MoSxCy carbided catalyst has not been fully characterized. In the present study, for the first time, a chemical reaction between the carbon content of a TEM Cu/C grid and a freshly sulfide Co/MoS2 catalyst was in situ observed at 300 °C and 450 °C by HRTEM experimental techniques at ~10 nm of resolution. Results indicate that bending of MoS2 layers occurred due to carbon addition on MoS2 edge sites, as observed in stabilized catalysts after HDS reaction. Using a silicon grid, only cracks of MoS2 slabs were observed without bending effect confirming the role of structural-carbon in this change of morphology.

  9. Hierarchically Porous Electrocatalyst with Vertically Aligned Defect-Rich CoMoS Nanosheets for the Hydrogen Evolution Reaction in an Alkaline Medium.

    PubMed

    Wu, Zexing; Guo, Junpo; Wang, Jie; Liu, Rong; Xiao, Weiping; Xuan, Cuijuan; Xia, Kedong; Wang, Deli

    2017-02-15

    Effective electrocatalysts for the hydrogen evolution reaction (HER) in alkaline electrolytes can be developed via a simple solvothermal process. In this work, first, the prepared CoMoS nanomaterials through solvothermal treatment have a porous, defect-rich, and vertically aligned nanostructure, which is beneficial for the HER in an alkaline medium. Second, electron transfer from cobalt to MoS2 that reduces the unoccupied d orbitals of molybdenum can also enhance the HER kinetics in an alkaline medium. This has been demonstrated via a comparison of the catalytic performances of CoMoS, CoS, and MoS2. Third, the solvothermal treatment time evidently impacts the electrocatalytic activity. As a result, after 24 h of solvothermal treatment, the prepared CoMoS nanomaterials exhibit the lowest onset potential (42 mV) and overpotential (98 mV) for delivering a current density of 10 mA cm(-2) in a 1 M KOH solution. Thus, this study provides a simple method to prepare efficient electrocatalysts for the HER in an alkaline medium.

  10. Como os Alunos do Ensino Médio da Rede Estadual de São Paulo obtém Conhecimentos Astronômicos?

    NASA Astrophysics Data System (ADS)

    da Cunha, W. S.; Voelzke, M. R.; Amaral, L. H.

    2005-08-01

    Atualmente vivencia-se um mundo globalizado onde os computadores e a internet permitiram um acesso rápido e seguro a todo tipo de informação e conhecimento. O presente trabalho visa analisar a maneira pela qual alunos de segundo grau da rede estadual da cidade de São Paulo obtiveram, caso tenham, conhecimentos básicos de astronomia quanto aos fenômenos celestes que os rodeiam, tais como a sucessão dos dias e das estações do ano, além de questioná~los sobre fatos genéricos tais como: o que vem a ser o Sol, o Big Bang, o que ocasionou a extinção dos dinossauros. Para tanto foi elaborado um formulário constando de questões de múltipla escolha, o qual foi aplicado no primeiro colegial diurno da Escola Estadual Guilherme de Almeida. Num espaço amostral de 44 alunos constatou-se que 41% dos alunos adquiriram seus conhecimentos astronômicos na escola e 59% através da mídia em geral. Neste mesmo espaço amostral apenas 11% dos alunos usaram computadores na escola, 41% na residência, 5% no trabalho e 43% não utilizaram. O presente estudo revelou também que para 50% dos alunos o professor jamais utilizou um programa de computador a respeito de astronomia ou fez alguma apresentação sobre o tema. Embora em sua fase inicial este estudo revela claramente que a maioria dos alunos não obtém na escola seus conhecimentos astronômicos, estes provém de fontes não especificamente didático-pedagógicas tais como filmes e revistas populares que não raramente geram conhecimentos incompletos e em muitos casos inclusive falhos.

  11. Tal Como Somos/Just As We Are: An Educational Film to Reduce Stigma towards Gay and Bisexual Men, Transgender Individuals & Persons Living with HIV/AIDS

    PubMed Central

    Ramirez-Valles, Jesus; Kuhns, Lisa M.; Manjarrez, Dianna

    2013-01-01

    In this paper we describe the development and dissemination of a film-based educational intervention to reduce negative attitudes towards gay and bisexual men and transgender women (GBT) and people living with HIV/AIDS (PLWHA) in Latino communities, with a focus on youth. The intervention, Tal Como Somos/Just as We Are, is based on stigma and attribution theories, extensive formative research, and community input. Evaluation findings among educators and school youth suggest the film has the potential to effectively impact attitudes towards GBT and PLWHA. The film and intervention are being disseminated using diffusion of innovations theory through community-based organizations, schools, television broadcasting and film festivals. PMID:24377496

  12. Tal Como Somos/just as we are: an educational film to reduce stigma toward gay and bisexual men, transgender individuals, and persons living with HIV/AIDS.

    PubMed

    Ramirez-Valles, Jesus; Kuhns, Lisa M; Manjarrez, Dianna

    2014-04-01

    In this article, the authors describe the development and dissemination of a film-based educational intervention to reduce negative attitudes toward gay and bisexual men, transgender women, and people living with HIV/AIDS in Latino communities, with a focus on youth. The intervention, Tal Como Somos/Just as We Are, is based on stigma and attribution theories, extensive formative research, and community input. Evaluation findings among educators and school youth suggest the film has the potential to effectively influence attitudes toward gay and bisexual men, transgender women, and people living with HIV/AIDS. The film and intervention are being disseminated using diffusion of innovations theory through community-based organizations, schools, television broadcasting, and film festivals.

  13. Telescópio de pequeno porte como suporte ao ensino em cidades com intensa poluição luminosa II

    NASA Astrophysics Data System (ADS)

    Pereira, P. C. R.; Santos-Júnior, J. M.; Cruz, W. S.

    2003-08-01

    Para a maioria dos estudantes, sua passagem pelo ensino formal fundamental envolve a transmissão de fatos que devem ser guardados para um exame, a habilidade para lembrar fórmulas e, eventualmente, a repetição de experimentos que devem produzir resultados exigidos pelo professor. O resultado deste modelo de ensino, ao longo dos anos, é conhecido por todos: desconhecimento e descontentamento, por parte dos estudantes, de temas relativos ao papel e aos processos da ciência. Acreditamos que a Astronomia, pelo seu caráter observacional, é uma das áreas do conhecimento que pode contribuir neste cenário. A Fundação Planetário da Cidade do Rio de Janeiro possui um telescópio Meade LX-200 (25cm) que, juntamente com as câmeras CCD ST-7E e ST8E, tem sido utilizado em projetos voltados aos estudantes do ensino médio desde o ano 2000. Tais projetos envolvem a condução de um projeto de pesquisa observacional num nível apropriado, e possibilitam o contato com técnicas e novas tecnologias: computador, software para manipulação de dados e gráficos, programas de tratamento e redução de dados, uso de equipamentos óptico-eletrônicos (telescópio e CCD), bem como o processo de aquisição de conhecimento. Dentro da proposta dos anos anteriores, priorizamos projetos de uma noite, ou seja, procuramos trabalhar com fenômenos que apresentem variabilidade com intervalo de recorrência relativamente curto. Em todos os casos, optamos pela fotometria diferencial, que tem se mostrado bastante eficiente para o céu luminoso como o da cidade do Rio de Janeiro. Neste painel, apresentamos alguns dos projetos desenvolvidos no último ano, com 25 estudantes. Apresentamos os resultados da observação da variável pulsante AI Vel (V = 6,6) e da variável cataclísmica FO Aqr (V = 13,5), e do monitoramento do trânsito da lua de Júpiter, Europa, ocorrido em 30 de abril de 2003. As curvas de luz produzidas para as primeiras estão concordantes com as da literatura, assim

  14. Climatic and anthropogenic forcing of prehistorical vegetation succession and fire dynamics in the Lago di Como area (N-Italy, Insubria)

    NASA Astrophysics Data System (ADS)

    Martinelli, Elisa; Michetti, Alessandro Maria; Colombaroli, Daniele; Mazzola, Eleonora; Motella De Carlo, Sila; Livio, Franz; Gilli, Adrian; Ferrario, Maria Francesca; Höbig, Nicole; Brunamonte, Fabio; Castelletti, Lanfredo; Tinner, Willy

    2017-04-01

    Combined pollen, charcoal and modeling evidence from the Insubria Region suggests that fire was a major driver of late Holocene vegetation change. However, the extent and timing of fire response dynamics are not clear yet. We use lacustrine sediments from Lago di Como (N-Italy, S-Alps) to assess if the reconstructed vegetation and fire dynamics were relevant at large scales and if they coincided in time with those observed at smaller sites. The lake, due to its size (142 km2) and economic potential, was very attractive for early land use and human presence in this area is well documented since ca. 10,000 yrs ago (Mesolithic). We used pollen, plant macrofossils and charcoal to reconstruct the vegetation composition and fire activity. During the Younger Dryas and the Early Holocene until ca. 8000 cal BP natural dynamics prevailed. Subsequently, land use and slash-and-burn activities increased at the Mesolithic-Neolithic transition and became widespread around ca. 6500 cal BP. Microscopic charcoal and numerical analyses demonstrate that anthropogenic fires had a determinant influence on long-term vegetation dynamics at regional scales in Insubria. Microscopic charcoal and pollen and spores indicative of land use show that human pressure intensified after ca. 5300 cal yr BP and even more since ca. 4300 cal yr BP. Our results suggest that important species which disappeared or were strongly reduced by land use and fire (e.g. Abies alba, Tilia, Ulmus) will potentially reestablish in the Lago di Como area and elsewhere in Insubria, if land abandonment initiated in the 1950s will continue.

  15. Hydro-geochemical modeling of subalpine urbanized area: geochemical characterization of the shallow and deep aquifers of the urban district of Como (first results).

    NASA Astrophysics Data System (ADS)

    Terrana, Silvia; Brunamonte, Fabio; Frascoli, Francesca; Ferrario, Maria Francesca; Michetti, Alessandro Maria; Pozzi, Andrea; Gambillara, Roberto; Binda, Gilberto

    2016-04-01

    One of the greatest environmental and social-economics threats is climate change. This topic, in the next few years, will have a significant impact on the availability of water resources of many regions. This is compounded by the strong anthropization of water systems that shows an intensification of conflicts for water resource exploitation. Therefore, it is necessary a sustainable manage of natural resources thorough knowledge of the hosting territories. The development of investigation and data processing methods are essential to reduce costs for the suitable use and protection of resources. Identify a sample area for testing the best approach is crucial. This research aims to find a valid methodology for the characterization, modeling and management of subalpine urban aquifers, and the urban district of Como appears perfect. The city of Como is located at the southern end of the western sector of Lake Como (N Italy). It is a coastal town, placed on a small alluvial plain, therefore in close communication with the lake. The plain is drained by two streams, which are presently artificially buried, and have an underground flow path in the urban section till the mouth. This city area, so, is suitable for this project as it is intensely urbanized, its dimensions is not too extensive and it is characterized by two aquifers very important and little known. These are a shallow aquifer and a deep aquifer, which are important not only for any water supply, but also for the stability of the ground subsidence in the city. This research is also the opportunity to work in a particular well-known area with high scientific significance; however, there is complete absence of information regarding the deep aquifer. Great importance has also the chosen and used of the more powerful open source software for this type of area, such as PHREEQC, EnvironInsite, PHREEQE etc., used for geological and geochemical data processing. The main goal of this preliminary work is the

  16. Aula Verde: Art as Experience in Community-Based Environmental Education

    ERIC Educational Resources Information Center

    Abarca, Marco A.

    2010-01-01

    After winning a class-action lawsuit against unconstitutional prison conditions in Puerto Rico, Marco Abarca managed to direct part of the fine monies accumulated throughout years of litigation toward an investment that would improve the living conditions in one of the largest and poorest housing projects in Puerto Rico. With the participation of…

  17. From Management to Negotiation: Technical and Institutional Innovations for Integrated Water Resource Management in the Upper Comoé River Basin, Burkina Faso

    NASA Astrophysics Data System (ADS)

    Roncoli, Carla; Kirshen, Paul; Etkin, Derek; Sanon, Moussa; Somé, Léopold; Dembélé, Youssouf; Sanfo, Bienvenue J.; Zoungrana, Jacqueline; Hoogenboom, Gerrit

    2009-10-01

    This study focuses on the potential role of technical and institutional innovations for improving water management in a multi-user context in Burkina Faso. We focus on a system centered on three reservoirs that capture the waters of the Upper Comoé River Basin and servicing a diversity of users, including a sugar manufacturing company, a urban water supply utility, a farmer cooperative, and other downstream users. Due to variable and declining rainfall and expanding users’ needs, drastic fluctuations in water supply and demand occur during each dry season. A decision support tool was developed through participatory research to enable users to assess the impact of alternative release and diversion schedules on deficits faced by each user. The tool is meant to be applied in the context of consultative planning by a local user committee that has been created by a new national integrated water management policy. We contend that both solid science and good governance are instrumental in realizing efficient and equitable water management and adaptation to climate variability and change. But, while modeling tools and negotiation platforms may assist users in managing climate risk, they also introduce additional uncertainties into the deliberative process. It is therefore imperative to understand how these technological and institutional innovations frame water use issues and decisions to ensure that such framing is consistent with the goals of integrated water resource management.

  18. Estimación de pequeñas perturbaciones en satélites geocéntricos como un problema inverso

    NASA Astrophysics Data System (ADS)

    Zadunaisky, P. E.

    El movimiento geocéntrico de un satélite artificial es simulado automáticamente por un sistema de ecuaciones diferenciales de segundo orden que incluyen dos funciones perturbadoras. La primera representa el segundo término del potencial gravitatorio de la Tierra y la segunda corresponde al frenado atmosférico. Asumiendo como conocidas, por hipótesis o por mediciones, la posición y velocidad del satélite en instantes sucesivos se estiman las perturbaciones a intervalos sucesivos por un método determinístico. Para ilustrar el método y comprobar la precisión de nuestros resultados hemos simulado dos ejemplos incluyendo valores conocidos de las perturbaciones que luego comparamos con los resultados de nuestro método. El método puede aplicarse por ejemplo para el intervalo de una revolución satelital lo cual permitiría el diseño inmediato de una maniobra correctiva de la órbita satelital.

  19. EPA se mueve hacia la prohibición de desengrasantes en aerosol y quitamanchas para lavado en seco como una de las primeras acciones reglamentarias conforme a la ley reformada de sustancias químicas

    EPA Pesticide Factsheets

    Comunicado de prensa de EPA: EPA se mueve hacia la prohibición de desengrasantes en aerosol y quitamanchas para lavado en seco como una de las primeras acciones reglamentarias conforme a la ley reformada de sustancias químicas

  20. Detection and identification of pathogenic trypanosome species in tsetse flies along the Comoé River in Côte d’Ivoire

    PubMed Central

    Djohan, Vincent; Kaba, Dramane; Rayaissé, Jean-Baptiste; Dayo, Guiguigbaza-Kossigan; Coulibaly, Bamoro; Salou, Ernest; Dofini, Fabien; Kouadio, Alain De Marie Koffi; Menan, Hervé; Solano, Philippe

    2015-01-01

    In order to identify pathogenic trypanosomes responsible for African trypanosomiasis, and to better understand tsetse-trypanosome relationships, surveys were undertaken in three sites located in different eco-climatic areas in Côte d’Ivoire during the dry and rainy seasons. Tsetse flies were caught during five consecutive days using biconical traps, dissected and microscopically examined looking for trypanosome infection. Samples from infected flies were tested by PCR using specific primers for Trypanosoma brucei s.l., T. congolense savannah type, T. congolense forest type and T. vivax. Of 1941 tsetse flies caught including four species, i.e. Glossina palpalis palpalis, G. p. gambiensis, G. tachinoides and G. medicorum, 513 (26%) were dissected and 60 (12%) were found positive by microscopy. Up to 41% of the infections were due to T. congolense savannah type, 30% to T. vivax, 20% to T. congolense forest type and 9% due to T. brucei s.l. All four trypanosome species and subgroups were identified from G. tachinoides and G. p. palpalis, while only two were isolated from G. p. gambiensis (T. brucei s.l., T. congolense savannah type) and G. medicorum (T. congolense forest, savannah types). Mixed infections were found in 25% of cases and all involved T. congolense savannah type with another trypanosome species. The simultaneous occurrence of T. brucei s.l., and tsetse from the palpalis group may suggest that human trypanosomiasis can still be a constraint in these localities, while high rates of T. congolense and T. vivax in the area suggest a potential risk of animal trypanosomiasis in livestock along the Comoé River. PMID:26035296

  1. Teaching of Astronomy: Scenarios of Teaching Practice in Elementary Schools. (Spanish Title: Enseñanza de la Astronomía: Semblanzas de la Práctica Docente en Educación Primaria.) Ensino de Astronomia: Cenários da Prática Docente no Ensino Fundamental

    NASA Astrophysics Data System (ADS)

    Marchi Gonzatti, Sônia Elisa; Spessatto De Maman, Andréia; Fernandes Borragini, Eliana; Kerber, Júlia Cristina; Haetinger, Werner

    2013-12-01

    atomización de los asuntos, aunque temas como movimientos de la Tierra y fenómenos astronómicos hayan sido citados por la mayoría de los participantes. En cuanto a las estrategias, se verifico que se emplean principalmente clases con el apoyo de recursos bidimensionales, como películas, textos, mapas y búsqueda en internet. Las principales dificultades fueron la falta de formación específica con respecto a los contenidos de Astronomía, y el nivel de abstracción exigido por los contenidos. De modo general, esos indicadores convergen para los resultados ya encontrados en otros estudios, en el que las deficiencias de la formación inicial de los profesores, o incluso su ausencia, dificulta el adecuado abordaje de la Astronomía en las clases. Neste trabalho são apresentados os principais resultados de uma investigação realizada no campo da Educação em Astronomia, com professores do ensino fundamental de duas regiões do Rio Grande do Sul. O objetivo do estudo foi caracterizar o cenário regional do ensino de Astronomia, estabelecendo um comparativo com o cenário nacional. Esse estudo abordou três questões: identificar os principais temas de astronomia trabalhados em sala de aula, as estratégias metodológicas e quais as dificuldades apresentadas pelos professores ao desenvolver sua prática. Quanto aos conteúdos, encontrouse uma pulverização dos assuntos abordados, embora temas como movimentos da Terra e fenômenos astronômicos tenham sido citados pela maioria dos participantes. Sobre estratégias, são utilizadas principalmente aulas com apoio de recursos bidimensionais, como filmes, textos, mapas e pesquisa na internet. As principais dificuldades foram: falta de formação específica em relação a conteúdos de Astronomia; nível de abstração dos conteúdos, que dificultam sua compreensão, tanto pelos alunos quanto pelos próprios professores. De maneira geral, esses indicadores convergem para resultados já encontrados em outros estudos que

  2. Density functional theory analysis of the interplay between Jahn-Teller instability, uniaxial magnetism, spin arrangement, metal-metal interaction, and spin-orbit coupling in Ca3CoMO6 (M = Co, Rh, Ir).

    PubMed

    Zhang, Yuemei; Kan, Erjun; Xiang, Hongjun; Villesuzanne, Antoine; Whangbo, Myung-Hwan

    2011-03-07

    In the isostructural oxides Ca(3)CoMO(6) (M = Co, Rh, Ir), the CoMO(6) chains made up of face-sharing CoO(6) trigonal prisms and MO(6) octahedra are separated by Ca atoms. We analyzed the magnetic and electronic properties of these oxides on the basis of density functional theory calculations including on-site repulsion and spin-orbit coupling, and examined the essential one-electron pictures hidden behind results of these calculations. Our analysis reveals an intimate interplay between Jahn-Teller instability, uniaxial magnetism, spin arrangement, metal-metal interaction, and spin-orbit coupling in governing the magnetic and electronic properties of these oxides. These oxides undergo a Jahn-Teller distortion, but their distortions are weak, so that their trigonal-prism Co(n+) (n = 2, 3) ions still give rise to strong easy-axis anisotropy along the chain direction. As for the d-state split pattern of these ions, the electronic and magnetic properties of Ca(3)CoMO(6) (M = Co, Rh, Ir) are consistent with d(0) < (d(2), d(-2)) < (d(1), d(-1)) but not with (d(2), d(-2)) < d(0) < (d(1), d(-1)). The trigonal-prism Co(3+) ion in Ca(3)Co(2)O(6) has the L = 2 configuration (d(0))(1)(d(2), d(-2))(3)(d(1), d(-1))(2) because of the metal-metal interaction between adjacent Co(3+) ions in each Co(2)O(6) chain, which is mediated by their z(2) orbitals, and the spin-orbit coupling of the trigonal-prism Co(3+) ion. The spins in each CoMO(6) chain of Ca(3)CoMO(6) prefer the ferromagnetic arrangement for M = Co and Rh but the antiferromagnetic arrangement for M = Ir. The octahedral M(4+) ion of Ca(3)CoMO(6) has the (1a)(1)(1e)(4) configuration for M = Rh but the (1a)(2)(1e)(3) configuration for M = Ir, which arises from the difference in the spin-orbit coupling of the M(4+) ions and the Co···M metal-metal interactions.

  3. Percepción de competencia y adiestramiento profesional especializado relativos al VIH/SIDA en estudiantes y profesionales de la salud: el estigma como un indicador de necesidad

    PubMed Central

    RODRÍGUEZ, Yarimar ROSA; DÍAZ, Nelson VARAS

    2009-01-01

    El proceso de estigmatización asume una devaluación de la persona debido a una característica o marca que haya sido identificada socialmente y que permita que se le describa como diferente. Desde que se desató la epidemia del VIH/SIDA, vivir con la enfermedad ha sido señalado de manera social como una marca estigmatizante. Las manifestaciones de dicha estigmatización se han documentado entre profesionales de la salud. Este estigma puede afectar los servicios de salud que las personas que viven con VIH/SIDA reciben de estos profesionales. Los objetivos de esta investigación fueron explorar: 1) la percepción que tienen estudiantes y profesionales de la salud sobre su nivel de competencia para ofrecer servicios a personas que viven con VIH/SIDA, 2) las opiniones de éstos sobre el tipo de adiestramiento profesional recibido y la necesidad del mismo, y 3) la manifestación de actitudes estigmatizantes como indicadores de necesidad de adiestramiento profesional. La muestra total del estudio estuvo compuesta por 80 de diversas profesiones de la salud. Los resultados reflejan que algunos/as de los/as participantes han recibido formación en VIH pero ésta no ha sido suficiente para contrarrestar las nociones estigmatizantes. Discutimos las implicaciones de los resultados para investigaciones futuras y el desarrollo de intervenciones con vías de minimizar las nociones estigmatizantes en los escenarios de salud. PMID:20011236

  4. The Astronomy Club of Araranguá: Educating Science Teachers as Science Communicators. (Breton Title: Clube de Astronomia de AraranguÁ: a Formação de Professores de Ciências Como Divulgadores Científicos. ) Club de Astronomía de Araranguá: la Formación del Profesorado Como Comunicadores de la Ciencia

    NASA Astrophysics Data System (ADS)

    Damasio, Felipe; Allain, Olivier; Antunes Rodrigues, Adriano

    2013-07-01

    The study reported in this work takes place since 2009 at the Federal Institute of Education, Science and Technology of Santa Catarina, Campus Araranguá. Our main goal is to help form teachers, training undergraduate students in Natural Sciences with specialization in Physics as science communicators, as well as to promote actions of broader scientific popularization in the region of the town of Araranguá through an Astronomy Club called CA2. Among the actions of scientific popularization that the students promote are: video production, radio broadcasts, lectures, nightly observations, preparation and exhibition of posters, physics teaching for children, continuing education activities for teachers and regular physics teaching using Astronomy as a theme. The Club's teacher education and scientific dissemination work is based on the Theory of Meaningful Learning, always trying to reach the student's predisposition to learn and produce potentially meaningful material, the two essential conditions for meaningful learning to occur. O estudo que este trabalho relata ocorre desde 2009 no Instituto Federal de Educação, Ciência e Tecnologia de Santa Catarina, campus Araranguá. Nele procura-se formar divulgadores científicos durante a formação inicial de docentes do curso de Licenciatura em Ciências da Natureza com habilitação em Física, além de promover ações de divulgação científica para o público geral da região da cidade de Araranguá por meio de um Clube de Astronomia chamado CA² (Clube de Astronomia de Araranguá). Entre as ações de divulgação científica que os licenciandos promovem estão: produção de vídeos, programas de rádio, palestras, observações noturnas, confecção e exposição de pôsteres, ensino de física para crianças, formação continuada de professores em atividades e ensino de Física regular utilizando a Astronomia como tema gerador. O trabalho de formação docente e divulgação científica do Clube fundamenta

  5. Micoinseticidas e Micoacaricidas no Brasil: Como estamos?

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Mycoinsecticides and mycoacaricides can be defined as biopesticide products based on living propagules of entomopathogenic fungi developed for inundative and inoculative biological control of insects and mites. Based on recently published data on global use of entomopathogenic fungi and a proposal f...

  6. Como Lo Hago Yo: Lipomas Medulares

    PubMed Central

    Portillo, Santiago

    2014-01-01

    Basados en la experiencia de 82 casos; en 5% se observaron anomalías pélvicas asociadas. En los menores de 3 años el motivo de consulta (85%) fue la tumoración. En los mayores de 3 años (42%) tenía problemas neurológicos. Solo el 24% preocupados por la tumoración. El objetivo de la cirugía es desanclar la médula y no remover la totalidad del lipoma. El lipoma de filum es el que es mas simple para operar. Aún cuando la escuela francesa propone operar solamente cuando hay síntomas favorezco cirugía preventiva. Favorezco una segunda cirugía si hay signos de anclaje postoperatorio, aún cuando observamos empeoramiento postoperatorio motor en 2.5% de los operados y urológico a largo plazo en 6% de los operados. PMID:24791218

  7. Magnetares como fuentes para potenciar supernovas superluminosas

    NASA Astrophysics Data System (ADS)

    Bersten, M. C.; Benvenuto, O. G.

    2016-08-01

    Magnetars have been proposed as one of the possible sources to power the light curve of super-luminous supernovae. We have included the energy deposited by a hypothetical magnetar in our one-dimensional hydrodynamical code, and analyzed the dynamical effect on the supernova ejecta. In particular, we present a model for SN 2011kl, the first object associated with a ultra-long-duration gamma-ray burst. Finally, we show its effect on the light curves of hydrogen rich supernovae.

  8. Navigating across Academic Contexts: Campo and Angolan Students in a Brazilian University

    ERIC Educational Resources Information Center

    Castanheira, Maria Lucia; Street, Brian V.; Carvalho, Gilcinei Teodoro

    2015-01-01

    This paper draws on the Academic Literacies approach to examine tutor/student relations in the production of academic texts. We address issues associated with learning to write in such contexts, through exploring the perspectives of two groups of non-traditional students as they reflect on their experiences in navigating educational contexts in a…

  9. Modeling of stratigraphic columns using Markov Chains and Gibbs sampling algorithms, Campo Oritupano, Venezuela.

    NASA Astrophysics Data System (ADS)

    Durán, E.

    2012-04-01

    The interbeded sandstones, siltstones and shale layers within the stratigraphic units of the Oficina Formation were stochastically characterized. The units within the Oritupano field are modeled using the information from 12 wells and a post-stack 3-D seismic cube. The Markov Chain algorithm was successful at maintaining the proportion of lithotypes of the columns in the study area. Different transition probability matrixes are evaluated by changing the length of the sequences represented in the transition matrix and how this choice of length affects ciclicity and the genetic relations between lithotypes. The Gibbs algorithm, using small sequences as building blocks for modeling, kept the main stratigraphic succession according to the geology. Although the modeled stratigraphy depends strongly on initial conditions, the use of longer sequences in the substitution helps not to overweight the transition counts from one lithotype to the same in the main diagonal of the probability matrix of the Markov Chain in the Gibbs algorithm. A methodology based on the phase spectrum of the seismic trace for tying the modeled sequences with the seismic data is evaluated and discussed. The results point to the phase spectrum as an alternate way to cross-correlate synthetic seismograms with the seismic trace in favor of the well known amplitude correlation. Finally, a map of net sand over the study area is generated from the modeled columns and compared with previous stratigraphic and facies analysis at the levels of interest.

  10. Las multiples dimensiones del campo de lenguas extranjeras (The Multiple Dimensions of the Foreign Language Field).

    ERIC Educational Resources Information Center

    Zoreda, Margaret Lee

    This paper discusses Wilga Rivers' seven language teaching objectives. Particular focus is on the following three language teaching objectives: (1) giving students the experience of expressing themselves linguistically and culturally in a context different from that in which they grew up; (2) fostering students' understanding of other peoples'…

  11. Pesticide Safety for Farmworkers = Uso Seguro de Pesticidas para los Trabajadores del Campo.

    ERIC Educational Resources Information Center

    Poli, Bonnie; Fluker, Sam S.

    A booklet for farmworkers and employers uses illustrations and simple text in English and Spanish to inform about the dangers, precautions, and use of pesticides. Topics covered include methods of pesticide absorption; signs/symptoms of pesticide poisoning; first aid; residues; appropriate work clothes; safe and unsafe pesticide practices; how to…

  12. Particle-associated contaminants in street dust, parking lot dust, soil, lake-bottom sediment, and suspended and streambed sediment, Lake Como and Fosdic Lake watersheds, Fort Worth, Texas, 2004

    USGS Publications Warehouse

    Wilson, Jennifer T.; Van Metre, Peter C.; Werth, Charles J.; Yang, Yanning

    2006-01-01

    A previous study by the U.S. Geological Survey of impaired water bodies in Fort Worth, Texas, reported elevated but variable concentrations of particle-associated contaminants (PACs) comprising chlorinated hydrocarbons, polycyclic aromatic hydrocarbons, and trace elements in suspended and bed sediment of lakes and streams affected by urban land use. The U.S. Geological Survey, in cooperation with the City of Fort Worth, collected additional samples during October 2004 to investigate sources of PACs in the watersheds of two impaired lakes: Lake Como and Fosdic Lake. Source materials and aquatic sediment were sampled and analyzed for PACs. Source materials sampled consisted of street dust and soil from areas with residential and commercial land use and parking lot dust from sealed and unsealed parking lots. Aquatic sediment sampled consisted of bottom-sediment cores from the two lakes and suspended and streambed sediment from the influent stream of each lake. Samples were analyzed for chlorinated hydrocarbons (organochlorine pesticides and polychlorinated biphenyls), polycyclic aromatic hydrocarbons, major and trace elements, organic carbon, grain size, and radionuclides.

  13. Teaching astronomy mediated by information and communication technologies: a preliminary approach

    NASA Astrophysics Data System (ADS)

    Rosa, R. H. L.; Voelzke, M. R.

    2014-08-01

    como, visita a planetários e a observatórios. Os estudantes ficaram muito sensibilizados pela possibilidade de percepção do céu em tempo real e à luz do dia dentro da sala de aula no contexto escolar. Os resultados deste levantamento preliminar indicam que os níveis de ensino fundamental e médio não foram capazes de internalizar conhecimentos básicos de astronomia, a despeito das orientações específicas contidas nos documentos oficiais da educação básica brasileira (Brasil, 1997 e 2000). Os estudantes pesquisados apresentaram conhecimentos e concepções rudimentares sobre o tema astronomia básica, indicando a ausência de abordagem do tema astronomia, tampouco de observação direta do céu em trabalhos de campo escolares na educação básica. Finalmente, esta abordagem didática suscitou nos estudantes grande interesse para futuros trabalhos de observação de campo. D.P. Ausubel; J.D. Novak; H. Hanesian. Psicología Educativa: un punto de vista cognoscitivo. México: Trillas, 1983. BRASIL. Secretaria de Educação Básica. Parâmetros Curriculares Nacionais: Ensino Fundamental (PCN), 1997, e Ensino Médio (PCNEM), 2000. Brasília. MEC/SEB.

  14. Essays on Eclipses, Transits and Occultations as Teaching Tools in the Introductory Astronomy College Course. (Spanish Title: Ensayos sobre Eclipses, Tránsitos y Ocultaciones Como Herramientas de Enseñanza en el Curso Universitario Introductorio a la Astronomía.) Ensaios sobre Eclipses, Trânsitos e Ocultações Como Ferramentas de Ensino em um Curso Universitário Introdutório de Astromomia

    NASA Astrophysics Data System (ADS)

    Dcruz, Noella L.

    2014-07-01

    estudiantes que escribieran dos ensayos cortos de tres que se proponían. Los ensayos contenían partes descriptivas y conceptuales. Los mismos estaban destinados a servir como herramientas de enseñanza. 62% de los 106 ensayos de 55 estudiantes obtuvo grados A, B o C. 21% de los 47 encuestados que respondieron al cuestionario posterior consideró que los ensayos aumentaron su interés por la astronomía. 49% de los encuestados consideró que los ensayos no eran educacionalmente útiles y que no deben ser propuestos de nuevo. Las respuestas escritas más comunes a nuestra encuesta indicaran que los estudiantes necesitan más orientación y una mejor preparación en la redacción de ensayos exitosos. Dado que los estudiantes encontraron las piezas conceptuales de los ensayos difíciles, en el futuro vamos a ofrecer actividades pertinentes antes de los plazos de redacción para ayudar a los estudiantes a crear ensayos de mayor calidad. Nós ocasionalmente incluímos projetos em nosso curso universitário introdutório centrado no aluno para permitir aos estudantes que pertencem às carreiras não científicas explorar alguns conceitos astronômicos em mais detalhes do que o normal. Tais projetos também enfatizam eventos astronômicos em curso ou futuros. Esperamos que os alunos se sintam mais interessados na astronomia através de projetos ligados a eventos astronômicos. No termo de Primavera de 2012 (EUA), propomos ensaios curtos focados em eclipses, trânsitos e ocultações para promover o raro trânsito de Vênus que ocorreu no dia 5 de junho de 2012. Pedimos aos alunos que escrevessem dois ensaios curtos dentre três que foram propostos. Os ensaios continham partes descritivas e conceituais. Eles foram feitos para servir como ferramentas de ensino. 62% de 106 ensaios de 55 alunos ganhou graus A, B ou C. 21% dos 47 entrevistados que responderam ao levantamento posterior sentiu que os ensaios aumentaram seu interesse na astronomia. 49% dos inquiridos consideraram que os

  15. [Contributions of neuroscience to the learning of numerical abilities].

    PubMed

    Gracia-Bafalluy, María; Escolano-Pérez, Elena

    2014-01-16

    Introduccion. Las dificultades en matematicas son relativamente frecuentes en el aula. Pueden aparecer asociadas a otros trastornos y retrasos del desarrollo, provocando sentimientos de ansiedad. En caso de no intervenir sobre ellas, sus efectos pueden prolongarse durante la adultez. A pesar de ello, su intervencion no es frecuente, especialmente desde el ambito educativo, dado que al no existir una definicion unica de ellas, su deteccion en el aula no es facil. Algunos de los ultimos avances en neurociencia podrian mejorar esta situacion. Objetivo. Revisar y recapitular los principales conocimientos aportados por las tecnicas de neuroimagen al campo del aprendizaje de las habilidades numericas, sus dificultades y su intervencion en el ambito educativo. Desarrollo. El gran avance experimentado por las tecnicas de neuroimagen ha permitido conocer informacion importante respecto a las areas cerebrales que subyacen a cada tarea numerica en la infancia y en la edad adulta, lo que a su vez ha posibilitado el diseño de programas de intervencion en las dificultades en el aprendizaje de las matematicas. A pesar de que los resultados obtenidos tras su aplicacion son positivos, todavia no son generalizables. Conclusiones. En el futuro debe extenderse el uso de las tecnicas de neuroimagen en la explicacion del proceso de aprendizaje y deteccion de las areas que, de no activarse correctamente, pueden derivar en trastornos de las matematicas. En ultimo termino, la investigacion con dichas tecnicas debe favorecer el desarrollo de programas aplicados al trabajo de las matematicas en el ambito educativo.

  16. The Identification of Linker Characteristics among Venezuelan Students in the United States.

    DTIC Science & Technology

    1980-06-01

    energia nuclear y solar , con los avances en la obtencio’n de nuevos combustibles sustitutos del petro’leo como, el GASOL (combinacio’n de gasolina con...horno de microhondas, etc. 3. La actual crisis de energia mundial tiene ahora una mayor perspectiva de solucio’n con las conquistas en los campos de la

  17. Pathology of dogs in Campo Grande, MS, Brazil naturally co-infected with Leishmania infantum and Ehrlichia canis.

    PubMed

    Andrade, Gisele Braziliano; Barreto, Wanessa Teixeira Gomes; Santos, Luciana Ladislau dos; Ribeiro, Laura Raquel Rios; Macedo, Gabriel Carvalho de; Sousa, Keyla Carstens Marques de; André, Marcos Rogério; Machado, Rosangela Zacarias; Herrera, Heitor Miraglia

    2014-01-01

    Different parasites that commonly occur concomitantly can influence one another, sometimes with unpredictable effects. We evaluated pathological aspects of dogs naturally co-infected with Leishmania infantum and Ehrlichia canis. The health status of the dogs was investigated based on histopathological, hematological and biochemical analyses of 21 animals infected solely with L. infantum and 22 dogs co- infected with L. infantum and E. canis. The skin of both groups showed chronic, predominantly lymphohistioplasmacytic inflammatory reaction. The plasmacytosis in the lymphoid tissues was likely related with the hypergammaglobulinemia detected in all the dogs. The disorganization of extracellular matrix found in the reticular dermis of the inguinal region and ear, characterized by the substitution of thick collagen fibers for thin fibers, was attributed to the degree of inflammatory reaction, irrespective of the presence of parasites. In addition, the histopathological analysis revealed that twice as many dogs in the co-infected group presented Leishmania amastigotes in the ear skin than those infected solely with Leishmania, increasing the possibility of becoming infected through sand fly vectors. Our findings highlight the fact that the health of dogs infected concomitantly with L. infantum and E. canis is severely compromised due to their high levels of total plasma protein, globulins, alkaline phosphatase and creatine kinase, and severe anemia.

  18. Cúmulos jóvenes inmersos en campos de edad intermedia en la barra de la Nube Mayor de Magallanes

    NASA Astrophysics Data System (ADS)

    Piatti, A. E.; Geisler, D.; Bica, E.; Clariá, J. J.

    We present Washington system photometry for 11 star clusters immersed in the northwest part of the Large Magellanic Cloud (LMC) bar. The fields are heavily populated by the intermediate-age component of the LMC bar. We succeeded in disentangling cluster colour-magnitude diagrams from those of the fields and in deriving reddening and ages for five clusters - SL 218, BRHT4b, NGC 1839, NGC 1838 and NGC 1863 - with the aid of recent Washington System theoretical isochrones. The resulting cluster ages range between 50 and 125 Myr. Despite their proximity, NGC 1836 and BRHT4b have very different ages. Thus the possibility for these two objects being a binary cluster is very unlikely, although a capture cannot be ruled out a priori. Our results suggest that for each intermediate-age cluster remaining in the LMC bar region, a number of robust young blue star clusters occurs in the same region (Piatti et al. 2003, MNRAS, 343, 851).

  19. Carbon Isotopic Heterogeneity of Graphite in the San Juan Mass of the Campo Del Cielo IAB Iron Meteorite

    NASA Technical Reports Server (NTRS)

    Maruoka, T.; Kurat, G.; Zinner, E.; Varela, M. E.; Ametrano, S. J.

    2003-01-01

    The origin of IAB iron meteorites is still a matter of debate. It is generally believed that iron meteorites originated from molten cores in small planetesimals because the fractionation trend of trace elements (e.g., Ir, Ge, Ga, etc. vs. Ni) for most iron meteorites can be more or less explained by fractional crystallization from metal melts. However, this process cannot produce trace element characteristics of the IAB (and other) iron meteorites. To explain these trace element abundance patterns, several models have been proposed. Although most of these models require a high temperature, clear evidence has recently been obtained for a sub-solidus formation of IAB iron meteorites from noble gas analyses. Moreover, heterogeneous distributions of some trace elements in metal and other phases also suggest a low temperature origin of at least some IAB iron meteorites. Here we use the carbon isotopic compositions of graphite to constrain the origin of IAB iron meteorites. Our data confirm a possible low temperature origin of IAB iron meteorites.

  20. 78 FR 2423 - Draft Environmental Impact Statement (DEIS) for the Proposed Shu'luuk Wind Project on the Campo...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-11

    ... Action Alternative, would achieve the generation of electricity from wind turbines installed by Invenergy. The manufacturer and model of the wind turbines have not yet been selected for the Shu'luuk Wind... temporary concrete batch plant. The wind power generation facility would operate year-round for a minimum...

  1. Geochemistry and eruptive behaviour of the Finca la Nava maar volcano (Campo de Calatrava, south-central Spain)

    NASA Astrophysics Data System (ADS)

    Lierenfeld, Matthias Bernhard; Mattsson, Hannes B.

    2015-10-01

    Here we present a detailed investigation into the geochemistry and the excavational/depositional processes involved in the maar-diatreme forming Finca la Nava (FlN) eruption in south-central Spain. Bulk rock compositions of hand-picked juvenile fragments indicate derivation of the FIN magma from a garnet-bearing mantle source, which has subsequently been overprinted in bulk rock samples by incorporation of a combination of spinel-bearing peridotites and upper-crustal lithics (i.e. quartzites and slates). The dominating phenocryst assemblage with clinopyroxene, olivine, amphibole and phlogopite points to the classification of the juvenile magma as being olivine melilititic in composition. Ascent through the lithosphere was rapid as indicated by the calculations of settling rates of mantle peridotites (~0.8 m s-1). The original magma fragmentation level in the conduit was probably relatively shallow carrying mainly juvenile pyroclasts (~60 %) intermixed with accidental crustal lithics (~35 %) and mantle xenoliths (<5 %) to the surface. The shapes of individual pyroclasts are sub-rounded to rounded and with highly variable vesicularities (5-45 %). This fact, in combination with abundant fine-grained material in the beginning of the eruption, indicates that both magmatic and phreatomagmatic fragmentation processes may have played important roles in forming the FIN maar. A relatively constant increase in quartzitic fragments from ~35 to <60 % with increasing stratigraphic height in the FIN deposits further indicates that the crater area successively widened during the eruption, which resulted in an increased recycling of quartzitic fragments. This eruption scenario, with the formation of a diatreme at depth, is also consistent with the absence of layers dipping inwards into the crater area.

  2. Evaluation on the effectiveness of actions for controlling infestation by rodents in Campo Limpo region, Sao Paulo Municipality, Brazil.

    PubMed

    de Masi, Eduardo; Vilaça, Pedro José; Razzolini, Maria Tereza Pepe

    2009-08-01

    Rodents are responsible for the transmission of more than 60 diseases both to human beings and to domestic animals. The increase in rodent infestation in a given area brings several health problems to the nearby population. Thus, when infestation increases, it is time to take intervention measures. Although many countries have implemented programs aimed at controlling rodent infestation, literature on studies evaluating the effectiveness of intervention measures in urban areas is scarce. Aimed at contributing to the understanding of rodents' population dynamics in urban areas, the objective of this study was to evaluate the effectiveness of the control methods proposed by "Programa de Vigilancia e Controle de Roedores do Municipio de Sao Paulo" (Program for Rodents Surveillance and Control in Sao Paulo Municipality), conducted on Jardim Comercial District. As a first step, a survey to assess infestation rates was conducted in 1529 dwellings located in the area studied. After that, a chemical control upon rodents was accomplished in every dwelling infested. One week and six months after completion of control measures, a new evaluation on infestation rates was carried out, in order to verify the effectiveness of the procedures taken and to estimate the re-infestation capacity. Initial infestation rate was 40.0%, and the final infestation rate, 14.4%. Therefore, the effectiveness of the control methods utilized was 63.8%. It can thus be concluded that the control methods applied were quite effective.

  3. Poaceae Pollen from Southern Brazil: Distinguishing Grasslands (Campos) from Forests by Analyzing a Diverse Range of Poaceae Species

    PubMed Central

    Radaeski, Jefferson N.; Bauermann, Soraia G.; Pereira, Antonio B.

    2016-01-01

    This aim of this study was to distinguish grasslands from forests in southern Brazil by analyzing Poaceae pollen grains. Through light microscopy analysis, we measured the size of the pollen grain, pore, and annulus from 68 species of Rio Grande do Sul. Measurements were recorded of 10 forest species and 58 grassland species, representing all tribes of the Poaceae in Rio Grande do Sul. We measured the polar, equatorial, pore, and annulus diameter. Results of statistical tests showed that arboreous forest species have larger pollen grain sizes than grassland and herbaceous forest species, and in particular there are strongly significant differences between arboreous and grassland species. Discriminant analysis identified three distinct groups representing each vegetation type. Through the pollen measurements we established three pollen types: larger grains (>46 μm), from the Bambuseae pollen type, medium-sized grains (46–22 μm), from herbaceous pollen type, and small grains (<22 μm), from grassland pollen type. The results of our compiled Poaceae pollen dataset may be applied to the fossil pollen of Quaternary sediments. PMID:27999585

  4. [Role of the obstetric nurse in the Anhanguera community, Campo Grande (MS), in the prevention of cervical cancer].

    PubMed

    de Freitas, S L; Arantes, S L; de Barros, S M

    1998-04-01

    This is a transversal study, developed between women of the Anhanguera community, with the objectives of knowing the demographic, sociocultural, gynecological and obstetric profile and of assessing health preventive behaviors in order to elaborate a plan of obstetric nursing assistance. The research tool was a form applied at home during visits to 104 women. Our results showed that 23.08% did not know about cancer prevention, 50.00% never performed it, 77.88% presented gynecological complaints but, 62.96% of these never looked for health services. Based on nursing diagnoses a plan of nursing care and health education was elaborated for the women from this community.

  5. Automatización de la adquisición de campos planos de cielo durante el atardecer

    NASA Astrophysics Data System (ADS)

    Areal, M. B.; Acosta, J. A.; Buccino, A. P.; Perna, P.; Areso, O.; Mauas, P.

    2016-08-01

    Since 2009, the Instituto de Astronomia y Fisica del Espacio keeps in development an optical observatory mainly aimed to the detection of extrasolar planets and the monitoring of stellar activity. In this framework, the telescopes Meade LX200 16 Horacio Ghielmetti in the Complejo Astronomico El Leoncito, and MATE (Magnetic Activity and Transiting Exoplanets) in the Estación de Altura at the Observatorio Astronomico Felix Aguilar were assembled. Both telescopes can operate automatically through all night, which generates a massive volume of data. Because of this, it becomes essential the automatization of the acquisition and analysis of the regular observations as well as the calibration images; in particular the flat fields. In this work a method to simplify and automatize the acquisition of these images was developed. This method uses the luminosity values of the sky, registered by a weather station located next to the observation site.

  6. International Workshop on Condensed Matter Theories (13th) Held in Campos do Jordao, Brazil on August 1989

    DTIC Science & Technology

    1990-01-01

    hadronic system. The properties of collective modes, typified by the zero-sound dispersion relation, may be extracted from fI(q, co), while the nature...by other documentation. 12a. DISTRIBUTION / AVAILABILITY STATEMENT 12b. DISTRIBUTION CODE Approved for public release; distribution unlimited. 13...for Model Nuclear Matter; by Eirene Mavromatis and )- J John W. Clark. 4. Generalized Momentum Distributions of Quantum Fluids,; by John W. Clark and

  7. Structure of a normal seismogenic fault zone in carbonates: The Vado di Corno Fault, Campo Imperatore, Central Apennines (Italy)

    NASA Astrophysics Data System (ADS)

    Demurtas, Matteo; Fondriest, Michele; Balsamo, Fabrizio; Clemenzi, Luca; Storti, Fabrizio; Bistacchi, Andrea; Di Toro, Giulio

    2016-09-01

    The Vado di Corno Fault Zone (VCFZ) is an active extensional fault cutting through carbonates in the Italian Central Apennines. The fault zone was exhumed from ∼2 km depth and accommodated a normal throw of ∼2 km since Early-Pleistocene. In the studied area, the master fault of the VCFZ dips N210/54° and juxtaposes Quaternary colluvial deposits in the hangingwall with cataclastic dolostones in the footwall. Detailed mapping of the fault zone rocks within the ∼300 m thick footwall-block evidenced the presence of five main structural units (Low Strain Damage Zone, High Strain Damage Zone, Breccia Unit, Cataclastic Unit 1 and Cataclastic Unit 2). The Breccia Unit results from the Pleistocene extensional reactivation of a pre-existing Pliocene thrust. The Cataclastic Unit 1 forms a ∼40 m thick band lining the master fault and recording in-situ shattering due to the propagation of multiple seismic ruptures. Seismic faulting is suggested also by the occurrence of mirror-like slip surfaces, highly localized sheared calcite-bearing veins and fluidized cataclasites. The VCFZ architecture compares well with seismological studies of the L'Aquila 2009 seismic sequence (mainshock MW 6.1), which imaged the reactivation of shallow-seated low-angle normal faults (Breccia Unit) cut by major high-angle normal faults (Cataclastic Units).

  8. Generación de campos magnéticos en astrofísica en presencia de efecto Hall

    NASA Astrophysics Data System (ADS)

    Mininni, P. D.; Gómez, D. O.; Mahajan, S. M.

    Magnetic field generation in astrophysical environments has been historically described within the framework of dynamo activity in magnetohydrodynamics. However, this canonical framework is not applicable in objects where kinetic effects, such as the Hall effect, are relevant. Some of the astrophysical systems where the Hall effect might be important are: turbulence in the early universe, white dwarfs, neutron stars, and accretion discs (specially in protostellar discs). In the present work, we present theoretical results and numerical simulations showing that the Hall currents have a profound effect on turbulent dynamo action. The results are compared with the classical dynamo theory. Depending on the strength of the Hall effect the generation of magnetic energy can strongly increase or decrease, reaching values much larger than those obtained in magnetohydrodynamic turbulent dynamos.

  9. Estudio del campo ocupacional del traductor en Santiago de Chile (A Study of Opportunities for Professional Translators in Santiago, Chile).

    ERIC Educational Resources Information Center

    Cabrera, Ileana; And Others

    A study of translation as a profession in Chile covered two areas: a diagnostic study of the real need for literary, scientific, and technical translations, and a followup study of graduates of the translation degree program at the Catholic Pontifical University of Chile (Santiago). The analysis considered the relationship between the need for…

  10. 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…

  11. Preparing the High School Classroom for Migrant English Language Learners (Preparación del aula de secundaria para estudiantes migrantes que aprenden inglés)

    ERIC Educational Resources Information Center

    Rouse, Megan Elizabeth

    2014-01-01

    In United States schools, the rate of immigrant English language learners is rapidly rising, affecting the lives of both students and teachers. This article will discuss the best ways to facilitate the students' language learning in a school setting; the type of structure, goals, and standards that can be expected; as well as ways to change the…

  12. Evaluacion de la Interaccion Adulto-Nino en Aulas Pre-escolares de Concepcion, Chile. [Evaluation Adult-Child Interaction in Preschool Classrooms of Concepcion, Chile.

    ERIC Educational Resources Information Center

    Mathiesen De G., Maria Elena; Herrera G., Maria Olivia; Villalon B., Malva; Suzuky S., Emy

    2000-01-01

    Presents findings from investigation of the validity of the Arnett Caregiver Interaction Scale, CIS (1989), in preschools in Concepcion, Chile. Demonstrates the reliability and validity of the scale to evaluate the interaction of the childhood educator with young children, suggesting changes to the scale. Notes differences found for school type.…

  13. [Mobile applications for nutrition, dietetics and healthy habits; analysis and consequences of an increasing trend].

    PubMed

    San Mauro Martín, Ismael; González Fernández, Miguel; Collado Yurrita, Luis

    2014-07-01

    Una aplicación móvil o app, es un software diseñado para funcionar en teléfonos inteligentes y otros dispositivos móviles. En los últimos años, estas apps han sufrido un auge en ofertas a sus usuarios y diversidad, entrando en el campo de la medicina, tanto para profesionales como para pacientes. De todas las “health apps“, hay una parte destinada al campo de la nutrición. Se estima que en la categoría de “diet and fitness“ hay más de 5.400 apps.

  14. El Espanol como Idioma Universal (Spanish as a Universal Language)

    ERIC Educational Resources Information Center

    Mijares, Jose

    1977-01-01

    A proposal to transform Spanish into a universal language because it possesses the prerequisites: it is a living language, spoken in several countries; it is a natural language; and it uses the ordinary alphabet. Details on simplification and standardization are given. (Text is in Spanish.) (AMH)

  15. Cosmic Web of Galaxies in the COMOS Field

    NASA Astrophysics Data System (ADS)

    Darvish, Behnam; Martin, Christopher D.; Mobasher, Bahram; Scoville, Nicholas; Sobral, David; COSMOS science Team

    2017-01-01

    We use a mass complete sample of galaxies with accurate photometric redshifts in the COSMOS field to estimate the density field and to extract the components of the cosmic web. The comic web extraction algorithm relies on the signs and the ratio of eigenvalues of the Hessian matrix and is enable to integrate the density field into clusters, filaments and the field. We show that at z < 0.8, the median star-formation rate in the cosmic web gradually declines from the field to clusters and this decline is especially sharp for satellite galaxies (~1 dex vs. ~0.4 dex for centrals). However, at z > 0.8, the trend flattens out. For star-forming galaxies only, the median star-formation rate declines by ~ 0.3-0.4 dex from the field to clusters for both satellites and centrals, only at z < 0.5. We argue that for satellite galaxies, the main role of the cosmic web environment is to control their star-forming/quiescent fraction, whereas for centrals, it is mainly to control their overall star-formation rate. Given these, we suggest that most satellite galaxies experience a rapid quenching mechanism as they fall from the field into clusters through the channel of filaments, whereas for central galaxies, it is mostly due to a slow quenching process. Our preliminary results highlight the importance of the large-scale cosmic web on the evolution of galaxies.

  16. Como Planear Mi Vida = Make a Life for Yourself.

    ERIC Educational Resources Information Center

    Haffner, Debra; Casey, Sean

    This booklet for teenagers about life planning is presented in parallel English and Spanish versions with a special focus on young Hispanics growing up in America. It discusses hopes and dreams that adolescents may have and gives tips for reaching goals. A sentence completion exercise is included to help readers set goals. Four important goals for…

  17. Make a Life for Yourself = Como Planear Mi Vida.

    ERIC Educational Resources Information Center

    Center for Population Options, Washington, DC.

    This booklet was devised to help Hispanic teenagers develop a life plan. It provides information for making decisions, and is written in both English and Spanish. Tips are provided for setting goals. A sentence-completion task helps the teenager focus on specific issues, and use concrete language when talking about the goals. Specific goals are…

  18. Como Lo Hago Yo: Tratamiento Quirurgico Del Mielomeningocele

    PubMed Central

    Portillo, Santiago

    2014-01-01

    En Argentina hay plan de fortificación con ácido fólico. Diagnostico prenatal no siempre es correcto. Cierre según técnica. Cerramos músculo. No favorecemos corpectomía temprana en casos de cifosis. Suturamos la plaqueta. Cerramos el plano muscular. Hidrocefalia: Válvula de derivación, generalmente dentro de los dos primeros meses. Ventriculostomía no está indicada. Chiari II. Laminectomia cervical alta. Siringomielia: Derivación desde la cavidad al peritoneo. PMID:24791219

  19. Los mitos como memoria colectiva de Los Pueblos.

    NASA Astrophysics Data System (ADS)

    Martín, P. T.

    Myths are essentially something practical that allows those who believe in them to solve any ambiguity which could come up in their relation with nature. Since they bring information about the condition of the reality to which they belong, they are but the appropriate instrument to insert nature into culture by actually achieving an adaptation to the environment. The purpose of this essay is to show how the deification of plants, animals, and stars, which are present in the daily lives of "Amerindian" people, not only constitutes a source of rich mythology but also turns out to be an effective measure towards the continuity of social groups. Similarities or identifications between human life and the life of plants, animals and stars as well as mutual interplay are somehow present in those myths: stars which create or are changed into human being, animals or plants; human beings who create or are transformed into astral bodies; battles between peoples and stars, etc. On this base, mythology can provide not only keys to show how certain human groups have achieved their adaptation to the environment and how the different social systems and their relations to nature have developed, but also hints of changes which have taken place in other heavenly spheres such as the falling of meteors, the appearance of comets or any other significant events of this kind in the lives of these groups.

  20. Polarimetría multicolor en dirección a un glóbulo de Bok

    NASA Astrophysics Data System (ADS)

    Rizzo, J. R.; Morras, R.; Arnal, E. M.

    Presentamos resultados de observaciones polarimétricas UBVRI en 65 estrellas muy débiles localizadas en el campo de un Glóbulo de Bok carente de anterior análisis observacional. Los resultados muestran un alto y uniforme grado de polarización --sobre todo en las bandas V, R e I-- en casi todas las estrellas de la muestra, así como una alineación del campo magnético proyectado en torno a la nube similar al del campo magnético general. Adicionalmente, estudiamos la posible conexión con la emisión en el infrarrojo a través de las observaciones del satélite IRAS.

  1. Observación solar desde el espacio, resultados recientes

    NASA Astrophysics Data System (ADS)

    Machado, M. E.

    Presentaremos un resumen de los resultados más recientes sobre la física del sol, obtenidos por medio del análisis de datos de satélites artificiales como el Yohkoh, SOHO y COMPTON/GRO. En particular, nos referiremos a la acción y dinámica de los campos magnéticos en la generación de fenómenos activos y el calentamiento coronal.

  2. Role of the Arg56 of the structural protein VP3 of foot-and-mouth disease virus (FMDV) 01 campos in virus virulence

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Foot-and-mouth disease virus (FMDV) is an extremely infectious and antigenically diverse picornavirus that causes high incidences of morbidity within naive livestock populations. Several reports indicate that FMDV O1 subtype strains undergo antigenic variation under diverse growth conditions. Of par...

  3. Genetic Variability of the Narrow Endemic Tree Antirhea aromatica Castillo‐Campos & Lorence, (Rubiaceae, Guettardeae) in a Tropical Forest of Mexico

    PubMed Central

    GONZÁLEZ‐ASTORGA, JORGE; CASTILLO‐CAMPOS, GONZALO

    2004-01-01

    • Background and Aims Genetic structure and variability were examined in the only three extant populations of the narrow‐endemic tree Antirhea aromatica (Rubiaceae, Guettardeae), an endangered species of the tropical forest of eastern Mexico. Patterns of genetic diversity within and among populations for adult plants and seedlings were obtained. • Methods Allozyme electrophoresis of 15 loci was conducted and the data analysed with statistical approximation for obtaining genetic diversity, structure and gene flow. • Key Results The mean expected heterozygosity (He) in the adult and seedling populations was 0·18 ± 0·08 and 0·20 ± 0·09, respectively. The genetic variation explained by differences among populations was 51 and 35 %, for adult and seedling populations, respectively. On average, gene flow between paired adult populations was low (Nm = 0·26 ± 0·09), compared with other trees from the tropical forest. • Conclusions The results indicated that the populations evaluated have high genetic variability, compared with other endemic and geographically narrowly distributed plant species, in areas with high levels of environmental heterogeneity (e.g. tropical forests). The conservation implications of the results are discussed, and in this regard it is proposed that A. aromatica should be considered as an indicator species with economic potential. It is suggested that sustainable management practices should be implemented and that the areas where the species is distributed should be declared a natural reserve to ensure the species conservation. PMID:15056561

  4. Energy balance in the ablation zone during the summer season at the Gran Campo Nevado Ice Cap in the Southern Andes

    NASA Astrophysics Data System (ADS)

    Schneider, Christoph; Kilian, Rolf; Glaser, Michael

    2007-10-01

    The energy balance and ablation of Glaciar Lengua were investigated during the austral summer of 1999/2000. Glaciar Lengua is located in Patagonia, in the southernmost Andes of Chile (53°S), within an extremely maritime climate. The aim of this study was to gain insight into current energy fluxes at this location and to evaluate how the energy fluxes depend on meteorological variables. From February to April 2000 an automated weather station was operated on Glaciar Lengua. Ablation was measured repeatedly at stakes during the same period. The point energy balance was calculated using the bulk approach formulation. The effective roughness length was adjusted in order to calibrate the model to the measured ablation. It was revealed that sensible heat transfer is the major contribution to the energy balance adding 54% of the energy available for melt. Net radiation contributes only 35% to the overall energy balance. Minor contributors are the latent heat flux (7%) and the heat flux by precipitation (4%). The net radiation shows little variance from day to day. Cross-correlations of the daily mean values of the energy fluxes derived from the energy balance model and meteorological variables reveal that air temperature and wind speed are the key factors controlling the summer energy balance in the ablation area. Melt derived from a multiple regression model based on these two variables correlates with computed melt with a correlation coefficient of 0.92. From the measured ablation, a summer-time degree-day factor of 7.6 mm·°C - 1 was derived for the ablation area.

  5. Efectos de Campos Magnéticos en las Tasas de Consumo de Madera por Coptotermes formosanus, la Termita Subterránea de Formosa.

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Sixty groups of 500 workers and 50 soldiers of Coptotermes formosanus were maintained in costume designed containers and fed with a piece of red oak wood (Quercus rubra). Twenty of these groups were exposed to permanent magnets with a flux of 800 G. Another 20 groups were exposed to a permanent mag...

  6. Resource management and fertility in Mexico’s Sian Ka’an Biosphere Reserve: Campos, cash, and contraception in the lobster-fishing village of Punta Allen

    PubMed Central

    Carr, David L.

    2009-01-01

    This case study examines the link between marine resource management, and the universal contraceptive use among married couples in the lobster- fishing village of Punta Allen, located in the Sian Ka’an Biosphere Reserve, Quintana Roo, Mexico. Several reasons appear to contribute to small desired and actual family sizes. Some of these include a medical clinic staff effective in promoting family planning, cooperative and private resource ownership, changing cultural attitudes, geographical limitations to population and economic growth, and a desire to conserve the environment for aesthetic and economic motives. Lastly, families desired to preserve a sustained balance between benefiting from lobster harvests today and safeguarding this marine resource for their children in the future. PMID:19672473

  7. Internal Rb-Sr Age and Initial Sr-87/Sr-86 of a Silicate Inclusion from the Campo Del Cielo Iron Meteorite

    NASA Technical Reports Server (NTRS)

    Liu, Y.; Nyquist, L.; Wiesmann, H.; Shih, C.; Schwandt, C.; Takeda, H.

    2003-01-01

    The largest group of iron meteorites, IAB, is distinguished by the presence of diverse silicate inclusions. In principle, Rb-Sr and Sm-Nd radiometric dating of these silicate inclusions by internal isochron techniques can determine both the times of melting and parent/daughter ratios in the precursor materials via initial Sr-87/Sr-86 and Nd-143/Nd-144 ratios. The Sr-87/Sr-86 and Nd-143/Nd-144 ratios could distinguish chondritic precursors from already differentiated silicates. We reported Rb-Sr and Sm-Nd internal ischron ages of 4.52+/-0.03 Ga and 4.50+/-0.04 Ga, respectively, for plagioclase-diopside-rich material in the Caddo County IAB iron meteorite. These results are essentially identical to literature values of its Ar-Ar age of 4.520+/-0.005 Ga and its Sm-Nd age of 4.53+/-0.02 Ga. The purpose of this study is to evaluate the formation and evolution of silicate inclusions in IAB iron meteorites by determination of their initial Sr-87/Sr-86 ratios combined with higher-resolution chronology and mineralogical and geochemical studies.

  8. Notas para la decodificacion de lesicos desconocidos en el campo del ingles cientifico (Notes for Deciphering Unknown Lexical Items in Scientific English).

    ERIC Educational Resources Information Center

    Perez, Cesar Morales

    1991-01-01

    This article outlines strategies for the inferring of English scientific terms by Spanish speakers. The article considers factors affecting the process of inference, the use of context morphology, and word origin in inferring word meaning. (SR)

  9. Difusión de los elementos químicos en atmósferas estelares con campos magnéticos

    NASA Astrophysics Data System (ADS)

    Panei, J. A.; Vallverdú, R.; Cidale, L. S.; Haucke, M.; Aidelman, Y. J.

    2016-08-01

    The presence of the Lorentz force in a gravitational field results in an effective gravity which is very different from the gravity in the absence of magnetic fields. This effective gravity is local and depends on the direction of the magnetic field as well as its strength. As a result of the alteration of the local gravity in the atmosphere, we can observe that the abundance of certain chemical elements is either enhanced or depressed. This would result in the formation of clouds in the stellar atmosphere. In order to model this effect, we have calculated the changes of chemical abundances in radiative atmospheres of early-type stars with magnetic fields. To this end, we developed a code that allows to compute the atomic diffusion for various elements with different ionization stages in presence of magnetic fields.

  10. Astrometría de pequeño campo con CCD: Evaluación de la aplicabilidad del método de ajuste en bloque

    NASA Astrophysics Data System (ADS)

    Bustos Fierro, I. H.; Calderón, J. H.

    The measuring of astrometric positions from a mosaic of direct CCD images with partial overlap taken with the Telescope Jorge Sahade is proposed. The influence of the errors introduced by the method itself, the instrumental errors, the measuring errors and the errors in the reference positions is analyzed in numerical simulations. The achievable accuracy in a square field 25'sided mapped with sixteen frames 10' sided in a center-edge arrangement is determined. It is found that the errors of the method itself and the reference catalog lead to positions with the same order accuracy than the reference catalog. In a measurement of second epoch positions for the determination of proper motions from Carte du Ciel plates, such errors are not significant if the ACT Reference Catalog is the source of the reference positions. It is also found that the errors of the measured positions are dominated by the aberrations of the optical system and the centering error of the stellar images.

  11. International Symposium on Spacecraft Ground Control and Flight Dynamics, SCD1, Sao Jose dos Campos, Brazil, Feb. 7-11, 1994

    NASA Astrophysics Data System (ADS)

    Rozenfeld, Pawel; Kuga, Helio Koiti; Orlando, Valcir

    An international symposium on spacecraft flight dynamics and ground control systems produced 85 papers in the areas of attitude determination and control, orbit control, satellite constellation strategies, stationkeeping, spacecraft maneuvering, orbit determination, astrodynamics, ground command and control systems, and mission operations. Several papers included discussions on the application of artificial intelligence, neural networks, expert systems, and ion propulsion. For individual titles, see A95-89098 through A95-89182.

  12. A Baseline Study of Strategies to Promote Critical Thinking in the Preschool Classroom (Un Estudio de Base sobre Estrategias para la Promoción de Pensamiento Critico en las Aulas de Preescolar)

    ERIC Educational Resources Information Center

    León, Jenny Melo

    2015-01-01

    The purpose of this study was to identify the different incidents of critical thinking in five preschool classrooms in one school, and the instructional strategies preschool teachers employed in the development of children's critical thinking. The participants in this study were five self-contained preschool teachers and their corresponding…

  13. Developing Mathematical Resilience: Students' Voice about the Use of ICT in Classroom (El desarrollo de la capacidad de resiliencia matemática: La voz de los estudiantes sobre el uso de las TIC en la aula)

    ERIC Educational Resources Information Center

    Mota, Ana Isabel; Oliveira, Hélia; Henriques, Ana

    2016-01-01

    Introduction: Mathematical resilience is assumed as one of the most important areas in school context and whose focus should be given priority, due to the distress exhibited by students when learning and understanding basic knowledge in mathematics year after year. The main goal of this research was to study how students attending middle schools…

  14. Como ayudar a su hijo a aprender a leer ingles como segunda lengua. (How Can I Help My Child Learn to Read English as a Second Language.)

    ERIC Educational Resources Information Center

    Garcia, Ricardo L.; Deyoe, Rita Maxine

    Suggestions for ways in which parents can help their children learn to read English are contained in this short booklet written in Spanish. Activities to be performed in the home, such as listening to and talking to the child in any language, reading aloud, reading for oneself, obtaining books for the home, and organizing study time for the child,…

  15. Un analisis de la influencia de las fricciones de los campos no militares sobre las fricciones del campo militar presentes en la operacion de rescate de rehenes Chavin de Huantar (An Analysis of the Influence that Friction in Non-Military Fields of Action Had Upon Military Friction in the Hostage Rescue Operation Chavin de Huantar)

    DTIC Science & Technology

    2012-05-16

    necesidad inmediata de eliminar la incertidumbre de lo que ocurría al interior de la residencia, por lo que el empleo de micrófonos era vital, a fin...en rarísimas ocasiones se pronuncia sobre hechos políticos y que esta solicitud directa significó una tremenda presión internacional sobre un

  16. Materials Data on Co(Mo3Se4)4 (SG:1) by Materials Project

    DOE Data Explorer

    Kristin Persson

    2016-02-10

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  17. Materials Data on Co(MoS2)2 (SG:12) by Materials Project

    DOE Data Explorer

    Kristin Persson

    2016-04-23

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  18. Co/Mo bimetallic addition to electrolytic manganese dioxide for oxygen generation in acid medium

    NASA Astrophysics Data System (ADS)

    Delgado, Dario; Minakshi, Manickam; McGinnity, Justin; Kim, Dong-Jin

    2015-10-01

    An efficient electrocatalyst comprising inexpensive and earth-abundant materials for the oxygen evolution reaction (OER) is crucial for the development of water electrolysis. In this work, in-situ addition of cobalt/molybdenum ions to the electrolytic manganese dioxide has been shown to be beneficial for the OER in acid solution as its overpotential performed better (305 mV) than that of the commercial DSA® (341 mV) at 100 mA cm-2. The OER was investigated at ambient temperature in 2 M H2SO4 solution on the modified EMD (MnMoCoO) electrodes. The energy efficiency of the MnMoCoO electrodes improved significantly with the amount of Co in the plating solution. For the electrodeposited catalysts, physico-chemical and electrochemical measurements were conducted including static overpotentials. The better performance of the modified EMD was attributed to an improved charge transfer resistance (Rct; 0.290 Ω cm2), average roughness factor (rf; 429) and decrease in water content in the electrodeposited catalysts. The kinetic parameters obtained on MnMoCoO catalysts were compared and discussed according to the cobalt concentration.

  19. Escuelas sin Drogas. Como Actuar. Edicion 1992. (Schools without Drugs. What Works. 1992 Edition).

    ERIC Educational Resources Information Center

    Department of Education, Washington, DC.

    Across the United States, schools and communities have found ways to turn the tide in the battle against drugs. This guidebook describes the methods they have used and the actions they have taken. The first section, "Children and Drugs" outlines the nature and extent of the drug problem and summarizes the latest research on the effects of drugs on…

  20. Como Ayudar a sus Hijos a Aprender Ciencia (Helping Your Child Learn Science).

    ERIC Educational Resources Information Center

    Paulu, Nancy; Martin, Margery

    Because most parents say they do not or cannot help their children with science, this booklet was designed to help them do so, easily and with pleasure for both parent and child. The introduction presents information on why and how parents should help their children and provides a general orientation to the ideas and activities offered in the…

  1. Cosmic ray soil moisture observing systems comos in cap fields at El Reno Oklahoma

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Soil water content (SWC) partitions rainfall into runoff and infiltration, modulates surface and atmospheric exchanges of water and energy, affects plant growth and crop yields, and impacts chemical and biological activities of soil, among other things. Thus, SWC, especially over large scales, is a...

  2. Como pagar to educacion, 2004-2005 (Funding Your Education, 2004-2005).

    ERIC Educational Resources Information Center

    Office of Federal Student Aid (ED), Washington, DC.

    This publication, written in Spanish, describes financial aid programs of the U.S. Department of Education and advises students about paying for college. It outlines things a student should ask about college and how to obtain financial aid, whether grants, work-study, or loans. Chapters provide information on: (1) "Education after High School";…

  3. Spanish Oral Language Guide: Kindergarten Level. Espanol como Segundo Idioma. Teacher's Guide: Level I.

    ERIC Educational Resources Information Center

    Corbell, Gloria; And Others

    This teacher's guide to Spanish language at the kindergarten level includes a recommended subject presentation sequence for the Spanish curriculum, a sample schedule, a grouping of students using three stations, and a classroom layout. The grouping would be effective when at least one-third of the children are Spanish-speaking or bilingual. The…

  4. 78 FR 36163 - Bitterroot National Forest, Darby Ranger District, Como Forest Health Project

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-17

    ... resilience to dwarf mistletoe, root rot, Douglas-fir beetle, and spruce budworm; (4) and maintain the visual..., thermal cover, old growth, and visual quality. DATES: Comments concerning the scope of the analysis must... resilience to native insects and diseases, and (4) maintain the visual integrity of the larger Lake...

  5. International Perspectives on Affirmative Action. A Bellagio Conference (Lake Como, Italy, August 16-20, 1982).

    ERIC Educational Resources Information Center

    Rockefeller Foundation, New York, NY.

    This volume presents nine papers read at a conference on affirmative action, sponsored by the Rockefeller Foundation and held at Columbia University in August 1982; a preface, summary paper, and list of participants are also included. Each paper addresses the issue of affirmative action within a different country and describes: (1) the policies…

  6. Como ayudar a sus hijos a usar la biblioteca (Helping Your Child Use the Library).

    ERIC Educational Resources Information Center

    Perkinson, Kathryn

    Focusing on the cooperative role of parents and public libraries in stimulating reading interests in children of all ages, this booklet addresses the following issues: (1) getting children interested in reading (reading aloud to children; encouraging children to read to you; starting a home library; showing children that you enjoy reading;…

  7. Como escoger una escuela para su hijo (Choosing a School for Your Child).

    ERIC Educational Resources Information Center

    Weston, Susan Perkins

    Step-by-step advice for Spanish-speaking parents on how to choose among available schools for their children is offered in this guidebook. Factors to consider in making the choice are discussed, as well as information on alternatives to the available choices, which include home schooling and working to create new options. After an introductory…

  8. "Como si nada": Enduring violence and diabetes among rural women in Southern Mexico.

    PubMed

    Montesi, Laura

    2017-04-14

    Rural women in Southern Mexico link their diabetes to distressful life experiences rooted in ordinary violence. While much has been written on the use that diabetes sufferers make of their morbid condition as an idiom of distress, I investigate the personal and social effects that such an idiom has on women. As I illustrate, diabetes reflects an ambivalence that helps women to speak about the unspeakable and, at the same time, reinforces their ideas of culpability, namely that they are to blame for both the gendered violence that they endure and the diabetes from which they suffer.

  9. La Lengua Escrita como Norma Fonetica (The Written Language as Phonetic Norm)

    ERIC Educational Resources Information Center

    Diaz-Plaja, Guillermo

    1977-01-01

    A collectivity can be defined by the verbal instrument which binds it together. By extension of this thought of Marshall MacLuhan, the importance of the written language as normative for the uniformity, universality and preservation of the phonetic system of the language is discussed. (Text is in Spanish.) (AMH)

  10. "Tanto Necesitamos De Aqui Como Necesitamos De Alla": "Leer Juntas" among Mexican Transnational Mothers and Daughters

    ERIC Educational Resources Information Center

    de la Piedra, Maria Teresa

    2011-01-01

    This paper presents part of the results of a qualitative study about literacy practices of Mexican transnational mothers, who live in and frequently cross the border between two countries (the United States and Mexico). Drawing on sociocultural approaches to literacy and literature on transnationalism, I analyze one practice: "leer…

  11. Como pagar tu educacion, 2003-2004 (How To Pay for Your Education, 2003-2004).

    ERIC Educational Resources Information Center

    Office of Federal Student Aid (ED), Washington, DC.

    This Spanish language booklet discusses paying for college. The guide presents information in question-and-answer form about things an applicant should ask and how to obtain financial aid. It describes the criteria for receiving aid and provides information about complying with aid requirements. The booklet also describes federal Pell grants and…

  12. 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,…

  13. Materials Data on CoMo (SG:221) by Materials Project

    SciTech Connect

    Kristin Persson

    2016-09-11

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  14. Platero como el primer paso liteario (Platero y Yo: A Student's Introduction to Literary Analysis).

    ERIC Educational Resources Information Center

    Ohrtman, Dennis W.

    This instructional guide is to be used by teachers in the instruction of "Platero y Yo," written by Juan Ramon Jimenez, one of Spain's foremost poets. A systematic study is provided of movement throughout the text, by analyzing verb tenses, to help novice Spanish literature students grasp the scholastic and psychological interpretations of poetic…

  15. The New Room Arrangement as a Teaching Strategy = La Nueva Organizacion del Salon como Estrategia Educativa.

    ERIC Educational Resources Information Center

    Dodge, Diane Trister

    Many typical classroom behavior problems--running in the classroom, inability to make choices, failure to stick with activities, fighting over toys, and poor use of materials-- can be traced to how the room is arranged and how materials are displayed. By making a few changes in the classroom environment, early childhood teachers can create a…

  16. Como ayudar a su hijo a aprender mathematicas. (Helping Your Child Learn Math).

    ERIC Educational Resources Information Center

    Kanter, Patsy F.; Darby, Linda B.

    Mathematics has become increasingly important in this technological age. That is why it is even more important for children to learn mathematics at home as well as in school. This second edition of Helping Your Children Learn Math is for parents of children in kindergarten through fifth grade. It has been revised to include a variety of activities…

  17. Como Lo Hago Yo: Defectos Del Cierre Del Tubo Neural En Nicaragua

    PubMed Central

    Gonzalez, Juan Bosco

    2014-01-01

    En Nicaragua no hay un plan de forltificación de alimentos con ácido fólico. Las madres son muy jóvenes. En La Mascota operamos mas de cuarenta niños por año. Derivación tardía es un problema. La infección preoperatoria tiene que ser descartada. Vancomicina y Ceftriaxone estan indicadas. Estricta regla de asepsia operatoria. Suturamos la plaqueta para asemejar su forma al cilindro normal de la médula. No ceramos la capa de músculo. PMID:24791221

  18. Educación no formal

    NASA Astrophysics Data System (ADS)

    Tignanelli, H.

    Se comentan en esta comunicación, las principales contribuciones realizadas en el campo de la educación en astronomía en los niveles primario, secundario y terciario, como punto de partida para la discusión de la actual inserción de los contenidos astronómicos en los nuevos contenidos curriculares de la EGB - Educación General Básica- y Polimodal, de la Reforma Educativa. En particular, se discuten los alcances de la educación formal y no formal, su importancia para la capacitación de profesores y maestros, y perspectivas a futuro.

  19. Cuba a la Deriva en un Mundo Postcommunista (Cuba Adrift in a Postcommunist World)

    DTIC Science & Technology

    1993-01-01

    Alimentario’ ospocial, y a posar do quo se ha omprendido una movilizaci6n agrf cola do gran oscala on el campo, Cuba podri producir s6lo entro el 30 y el 40...y las fuorzas armadas do Cuba, asi como gran part. do Arn~rica Latina, so pasarfan a ou bando, asegur~ndole mu lugar en Is historia. Estados Unidos...forma do aumontar ]s disponibilidad do publicaciones norteamoricanas y extranjeras en Cuba, y fomontar los vinculos do las telecomunicaciones a travis do

  20. Astronomy in High School: Using a Mini-Planetarium to Understand Details of the Apparent Movement of Stars. (Spanish Title: Astronomía en la Escuela Secundaria: Comprendiendo los Detalles del Movimiento Aparente de Las Estrellas con un Miniplanetario.) Astronomia no Ensino Médio: Compreendendo Detalhes do Movimento Aparente das Estrelas com um Miniplanetário

    NASA Astrophysics Data System (ADS)

    dos Santos Leão, Demetrius

    2013-07-01

    en la comprensión de estas cuestiones y demostraron un gran interés por esta metodología. O objetivo deste artigo é apresentar parte dos resultados obtidos com a intervenção feita como projeto da dissertação de mestrado do autor, que consistiu no desenvolvimento de um conjunto de aulas de Astronomia, com alunos do 1º Ano do Ensino Médio de uma escola da rede privada do Distrito Federal (Brasília, Brasil), empregando como recurso principal um material didático chamado miniplanetário (MP). Utilizando como pressuposto teórico norteador dessas aulas as ideias de contextualização e dialogicidade de Paulo Freire, foi proposta aos estudantes a montagem e utilização desse recurso em uma sessão de planetário. Durante o projeto, enfatizaram-se assuntos como a trajetória aparente das estrelas para o céu de Brasília, a localização dos pontos cardeais a partir da constelação do Cruzeiro do Sul, as cores das estrelas e as estrelas vistas de uma determinada localidade. Apurou-se que os alunos apresentaram melhoria na compreensão desses assuntos, bem como demonstraram expressiva empolgação com essa metodologia desenvolvida.

  1. Bases para la elaboracion de unidades didacticas de calidad en el area de ciencias (Fisica y Quimica 3 deg ESO)

    NASA Astrophysics Data System (ADS)

    Maccioni, Elena Lucia

    Este Trabajo Fin de Master tiene como objeto, el estudio previo de la educacion de la ciencia en la actualidad y mas destacable, del diseno de las unidades didacticas segun las metodologias mas frecuentes aplicadas por los diferentes sistemas educativos en el area de las Ciencias teniendo en cuenta la importancia y el efecto de la psicologia del alumnado y todo ello como no puede ser de otro modo bajo el corse de la Legislacion aplicable, Estatal, Autonomica y europea. Con estos antecedentes, se extrae cuales son las preguntas que deben contestarse en la elaboracion de una unidad didactica de calidad en el contexto, generacional (edad y sexo), del Proyecto Educativo de Centro, y de la Programacion del Departamento, discutiendo y justificando cada uno de los apartados en que estructuradamente dividiremos dicha Unidad, con un formato manejable, util, y dinamico en el tiempo que sea un verdadero instrumento educativo de aula. Teniendo en cuenta estas premisas, se procede a hacer una recopilacion de una misma unidad didactica publicada por diferentes editoriales, elegidas no al azar, sino en funcion de su penetracion editorial en nuestros centros de ESO, siendo las elegidas (SM y Oxford). Las diferentes unidades seleccionadas son analizadas de forma critica, atendiendo a los criterios generales de calidad bajo parametros cientificos y normativos, concluyendo con la aportacion final que es la redaccion de unas pautas cientifico-pedagogicas, para redactar unidades didacticas de calidad en el area de la Ciencias, en concreto en la Asignatura de Fisica y Quimica de 3º de ESO.

  2. Extensión del Formalismo de Orbitales de Defecto Cuántico al tratamiento del efecto Stark (SQDO).

    NASA Astrophysics Data System (ADS)

    Menéndez, J. M.; Martín, I.; Velasco, A. M.

    El estudio experimental de las interacciones de átomos Rydberg altamente excitados con campos eléctricos ha experimentado un creciente interés durante las dos últimas décadas debido, en gran medida, al desarrollo de nuevas técnicas para crear y estudiar átomos Rydberg en el laboratorio. Acompañando a estas nuevas técnicas experimentales, es necesario el desarrollo de modelos teóricos que nos permitan contrastar sus medidas y conocer mejor los fundamentos de los mismos. Desde el punto de vista teórico el conocimiento del desdoblamiento de los niveles energéticos de un átomo en función de la magnitud del campo eléctrico aplicado (lo que se conoce como mapa Stark) es el mejor punto de partida para la descripción del sistema y un prerrequisito fundamental para el cálculo de distintas propiedades atómicas en presencia del campo eléctrico tales como intensidades de transición, umbrales de ionización de campo eléctrico, tiempos de vida, posición y anchura de cruces evitados, etc. En este trabajo presentamos la adaptación del método de orbitales de defecto cuántico [1,2,3] al tratamiento del efecto Stark (SQDO) [4] y su aplicación al cálculo de los desdoblamientos energéticos y fuerzas de oscilador de estados Rydberg en los átomos de Li, Na y K. El propósito de este estudio es, por un lado, desarrollar métodos fiables para la determinación de propiedades atómicas en presencia de campos eléctricos y, por otro, mostrar la fiabilidad de las funciones de onda QDO en la descripción del efecto Stark en sistemas atómicos.

  3. Los cambios en la velocidad de rotación terrestre y los fenómenos geomagnéticos

    NASA Astrophysics Data System (ADS)

    Gianibelli, J. C.

    Uno de los aspectos importantes relativos a la geodinámica del interior terrestre es la correlación entre los eventos de cambio en la velocidad de rotación terrestre y los determinados en los elementos del campo geomagnético por ejemplo, la Declinación Magnética, o los coeficientes de los modelos matemáticos de representación global de dicho campo. En este trabajo se presentan los resultados de las características espectrales de los cambios observados en la longitud del día (ldd), y su relación con la estructura espectral de las coeficientes de los modelos matemáticos de campo denominados Campo Internacional Geomagnético de Referencia (CIGR). El intervalo estudiado comprende los últimos 100 años. Los resultados muestran una correlación en las bandas de 60 y 30 años, con posibles períodos mucho mayores que no son posibles determinar a partir de los modelos de CIRG. Se efectúa una simulación a partir de los resultados obtenidos por la aplicación del método de máxima entropía con longitudes del filtro predictor de error comprendida entre el 10% y el 95% de la longitud de la serie analizada. Se observan procesos sicrónicos y asincrónicos que, en muy largos intervalos de tiempos, podrían suponerse como caóticos.

  4. Fenómenos solares que afectan la atmósfera terrestre

    NASA Astrophysics Data System (ADS)

    Rovira, M.

    Se describen los principales fenómenos solares como fulguraciones, prominencias eruptivas, viento solar y eyecciones de masa coronal (CME) que tienen consecuencias en la atmósfera terrestre. En algunos casos el material es eyectado a velocidades superiores a los 900 km/seg y tarda menos de 48 horas en llegar a la Tierra. En general, estos CME no son peligrosos ya que el campo magnético terrestre actúa como protector siendo un aislante efectivo. Si el viento solar es muy intenso puede comprimir la magnetósfera y producir una tormenta geomagnética. En casos extremos, puede interferir la transmisión de potencia eléctrica, perturbar los satélites y producir auroras polares.

  5. Ensino de astronomia e óptica: é possível fazê-lo de forma contextualizada no nível médio?

    NASA Astrophysics Data System (ADS)

    Sobrinho, A. A.; Jafelice, L. C.

    2003-08-01

    Discutimos nossa participação em um curso de treinamento para professores de diversas disciplinas do ensino médio. Nossa preocupação básica foi desenvolver instrumentos educacionais adequados para levar à sala de aula, nesse nível de ensino, de forma contextualizada, questionamentos freqüentes dos alunos sobre astronomia e sua relação com tecnologia e sociedade. Encaminhamos questões como: a evolução da astronomia, suas relações com outros ramos do conhecimento humano e conseqüentes aplicações; avanços na tecnologia dos instrumentos ópticos versus a importância da observação do céu a olho nu; a relação entre olho humano, luneta e telescópio; e desenvolvimento da tecnologia espacial e sua influência em nosso cotidiano. Objetivamos com isto fazer um resgate histórico e pedagógico das aplicações e observações do céu no cenário escolar, destacando a relação entre eventos astronômicos, olho humano, instrumentos mediadores e suas contextualizações históricas e sociais. Produtos desta abordagem foram o desenvolvimento e a adaptação de práticas e materiais instrucionais diversos (e.g., "espelhos" de isopor e "raios luminosos" de bolinhas de gude; montagens envolvendo velas, lasers, lentes e espelhos; desmonte e análise de peças de um telescópio; etc.). Além disto, como outro resultado deste trabalho, elaboramos textos sobre história da astronomia e da óptica para atividades em classe. Com estas ações visamos facilitar a concretização de conceitos físicos envolvidos, exemplificar um ensino contextualizado e interdisciplinar motivado por temas astronômicos e favorecer que práticas e discussões feitas com os treinandos possam ser transpostas para a sala de aula. A reação dos professores às práticas propostas foi bastante positiva. Todos esses aspectos são discutidos em detalhe neste trabalho. (PPGECNM/UFRN; PRONEX/FINEP; NUPA/USP; Temáticos/FAPESP)

  6. Observaciones de la corona solar interior con un coronógrafo de espejo

    NASA Astrophysics Data System (ADS)

    Stenborg, G.; Schwenn, R.; Francile, C.; Rovira, M.

    El plasma de la corona solar es un buen indicador de las líneas de fuerza del campo magnético. Por lo tanto, el análisis de estructuras coronales cuasiestacionarias en la corona da importante información sobre el campo magnético y la actividad asociada. Se trata de poner límites a los modelos teóricos existentes mediante el estudio de distintas estructuras en la corona interior. En agosto de 1997 comenzó a operar el coronógrafo solar (MICA) en El Leoncito como parte del Observatorio Solar Alemán-Argentino. Desde su instalación obtiene imágenes de la corona solar (1.05 a 2.0 radios solares) en 2 líneas espectrales correspondientes a la emisión de Fe XIV y Fe X. El instrumento puede obtener imágenes cada minuto por lo que es ideal para estudiar procesos rápidos. Presentamos observaciones recientes que muestran la capacidad del coronógrafo así como la evolución de algunos eventos dinámicos observados por MICA.

  7. Attivita del Centro di Linguistica Applicata nel campo della lingua e della cultura italiana all'estero (Activities of the Italian Center for Applied Linguistics concerning Italian Language and Culture Abroad).

    ERIC Educational Resources Information Center

    Boriosi Katerinov, Maria Clotilde

    1979-01-01

    Outlines the activities of a recently created section of the Italian Center for Applied Linguistics (CILA), dealing with "Teaching Italian Abroad." Describes these activities as encompassing four areas: research, teaching methodology, consultation, teachers' training and bibliographical information. Lists statistical surveys, research papers, and…

  8. 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…

  9. Results of investigation at the Miravalles Geothermal Field, Costa Rica: Part 1, Well logging. Resultados de las investigaciones en el campo geotermico de Miravalles, Costa Rica: Parte 1, Registros de pozos

    SciTech Connect

    Dennis, B.R.; Lawton, R.G.; Kolar, J.D.; Alvarado, A.

    1989-03-01

    The well-logging operations performed in the Miravalles Geothermal Field in Costa Rica were conducted during two separate field trips. The Phase I program provided the deployment of a suite of high-temperature borehole instruments, including the temperature/rabbit, fluid sampler, and three-arm caliper in Well PGM-3. These same tools were deployed in Well PGM-10 along with an additional survey run with a combination fluid velocity/temperature/pressure instrument used to measure thermodynamic properties under flowing well conditions. The Phase II program complemented Phase I with the suite of tools deployed in Wells PGM-5, PGM-11, and PGM-12. 4 refs., 25 figs., 1 tab.

  10. Results of investigation at the Miravalles geothermal field, Costa Rica. Resultados de las investigaciones en el campo geotermico de Miravalles, Costa Rica; Parte 2, Muestreo de fluidos pozo abajo

    SciTech Connect

    Grigsby, C.O.; Goff, F.; Trujillo, P.E. Jr.; Counce, D.A.; Dennis, B.; Kolar, J.; Corrales, R.; Instituto Costarricense de Electricidad, San Jose )

    1989-10-01

    Samples of the geothermal fluids in the Miravalles, Costa Rica, geothermal system were collected from production wellbores using downhole fluid samplers, from flowing wellheads using miniseparators, and from hot springs that discharge in the area. The reservoir fluid at Miravalles is a neutral-chloride-type water, but fumaroles and acid-sulfate springs are present within the main thermal area, and there are bicarbonate-rich hot springs that are clearly related to the neutral-chloride reservoir fluids. Dissolved gases are primarily a mixture of CO{sub 2} with air, but samples collected in the fumarolic areas also contain H{sub 2}S. Water-stable isotope analyses suggest local meteoric recharge, and the reservoir fluid shows oxygen isotopic shifts of about 2.5% due to high-temperature oxygen exchange between water and rock. Chemical geothermometer temperatures are consistent with the measured downhole temperature of 220{degrees} to 255{degrees}C. This pattern of neutral-chloride reservoir fluids with acid-sulfate springs near the source region and bicarbonate-rich chloride hot springs at the periphery of the system suggests a lateral outflow type of hydrothermal system. In addition to the geochemical evidence, temperature profiles from several of the wells show temperature reversals that are characteristic of lateral outflow plumes. We find no evidence for the underlying, higher temperature (300{degrees}C) system, which has been suggested by other investigators. 24 refs., 14 figs., 6 tabs.

  11. 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.

  12. How Families Teach, Support, Learn, Make Decisions: Ways for Families To Help Children Do Better in School = Como las Familias Ensenan, Apoyan, Aprenden, Toman Decisiones: Como las Familias Ayudan a los Ninos a Mejorar en la Escuela.

    ERIC Educational Resources Information Center

    RMC Research Corp., Hampton, NH.

    This booklet contains ideas about how families can help children in school in the following basic ways by: (1) teaching their children; (2) learning new things to help their children learn; (3) supporting children and the school; and (4) making decisions about what and how children learn. For each of these areas, a chart is included so that…

  13. Insertion of Astronomy as a High School Subject. (Spanish Title: Inserción de Astronomia Como Materia del Ciclo Secundario.) Inserção da Astronomia Como Disciplina Curricular do Ensino Médio

    NASA Astrophysics Data System (ADS)

    Dias, Claudio André C. M.; Santa Rita, Josué R.

    2008-12-01

    Astronomy is considered among the first sciences that man dominated, however, the basic skills for the construction of knowledge, relatively to the contents "Earth and the Universe" are not being developed properly for the majority of students concluding the high school level. The students are concluding this teaching cycle without proper knowledge of several subjects in the area of Astronomy, which are mandatory in the national Curricular National Parameters (PCN). Because of this discrepancy, this work stresses the need of the incorporation of a specific subject of Astronomy in the high school, in order to reduce the gap between what is taught and which should be taught. La Astronomía es considerada una de las primeras ciencias que el hombre dominó. Sin embargo, las habilidades básicas para la construcción del conocimento, relativo al eje temático "Tierra y Universo", no vienen siendo trabajadas adecuadamente con la mayoría de los alumnos que concluyen el ciclo escolar medio. Los alumnos están concluyendo este nivel de enseñanza sin conocimentos de varios temas en el área de Astronomía, que son obligatorios según los Parámetros Curriculares Nacionales (PCN). En virtud de esta discrepancia, este trabajo enfatiza la necesidad de incorporar una disciplina específica de Astronomía em el ciclo medio, em pro de la reducción de las distorsiones entre lo que es enseñado y lo que se debe enseñar. A Astronomia é considerada uma das primeiras ciências que o homem dominou, porém as competências básicas para a construção do conhecimento, relativo ao eixo temático "Terra e Universo", não vêm sendo trabalhadas a contento com a maioria dos alunos que concluem o ensino médio. Os alunos estão concluindo este nível de ensino sem conhecimento de vários temas na área de Astronomia, que são obrigatórios nos Parâmetros Curriculares Nacionais (PCN). Em virtude desta discrepância, este trabalho vem evidenciar a necessidade da incorporação de uma disciplina específica de Astronomia, no ensino médio, em prol da redução das distorções entre o que é ensinado e o que se deve ensinar.

  14. Aquecimento alfvênico viscoso-resistivo em discos de acresção ao redor de estrelas T Tauri clássicas

    NASA Astrophysics Data System (ADS)

    Santana, W. M.; Vasconcelos, M. J.

    2003-08-01

    Com a crescente disponibilidade de dados observacionais sobre estrelas T Tauri, a busca por modelos mais precisos vem se tornando cada vez maior. Estes modelos devem explicar, entre outras coisas, o mecanismo dissipativo responsável pelo transporte de momento angular no disco de acresção que acredita-se, circunda estas estrelas. O mecanismo mais viável, do ponto de vista teórico, é uma instabilidade MHD conhecida como "instabilidade magnetorotacional ou Balbus-Hawley" (IBH). Esta instabilidade veio mostrar que o campo magnético desempenha um papel importante na evolução destes objetos mas requer, no entanto, um acoplamento mínimo entre o gás e o campo magnético no disco que não é atingido para os valores de temperatura obtidos do modelo padrão. Contudo, alguns mecanismos de aquecimento para o disco precisam ser examinados. Neste trabalho, propomos a dissipação de ondas Alfvén como uma fonte de aquecimento para o disco. Se o gás apresentar uma condutividade elétrica finita e viscosidade, teremos um tipo de amortecimento para as ondas denominado amortecimento viscoso-resistivo que será aqui considerado. Este mecanismo é aplicado ao modelo de disco em camadas. Calculam-se as taxas de aquecimento Alfvênico, a temperatura efetiva do disco bem como as taxas de ionização decorrentes deste aquecimento e do aquecimento gerado pela absorção de raios cósmicos. Comparações com os dados observacionais de Kitamura et. al. (2001) são efetuadas, ressaltando-se os pontos comuns entre suas observações e nossos dados teóricos.

  15. The English as a Foreign Language/Lingua Franca Debate: Sensitising Teachers of English as a Foreign Language towards Teaching English as a Lingua Franca (El debate del inglés como lengua extranjera o como lengua franca: sensibilización de docentes de inglés como lengua extranjera hacia la enseñanza del inglés como lengua franca)

    ERIC Educational Resources Information Center

    Mansfield, Gillian; Poppi, Franca

    2012-01-01

    The function of English as a lingua franca for communication needs rethinking in the teaching of English as a foreign language classroom as a consequence of globalisation. The present contribution is an empirical study carried out in an Italian university environment which aims to show how teachers should take on board awareness raising activities…

  16. International Workshop on Mathematical Methods in Combustion Held in Como, Italy on 18-22 May 1992

    DTIC Science & Technology

    1992-05-01

    Colombo Mr. Ugo Scaglione Mathematical Methods in Combustion Monday, 18 May 1992 Villa Olmo, Room ’ Olimpo " 08.30 Registration 09.15 L De Luca, R...Villa Olmo, Room " Olimpo " 8.50 L. De Luca Introductory Remarks NUMERICAL FUNDAMENTALS M.K. Strelets chairman 09.00 E.S. Oran Limitations and...Villa Olmo, Room " Olimpo " 08.50 L. De Luca Introductory Remarks LINEAR COMBUSTION STABILITY A.G. Merzhanov chairman 09.00 B.V. Novozhilov Combustion

  17. How Can We Provide Safe Playgrounds? = Como podemos proveer lugares con juegos infantiles que no sean peligrosos para los ninos?

    ERIC Educational Resources Information Center

    ACCESS ERIC, Rockville, MD.

    Outdoor playgrounds can be exciting places where children explore their environment and develop motor and social skills; however, they can also pose serious safety hazards. With the exception of California, no mandatory state or federal standards currently exist regarding manufacture or installation of playground equipment or surfaces. The…

  18. Estudio de generacion de energia con celdas de combustible con membrana poly diallydimethylammonium chloride (PDADMAC) como polimero de intercambio protonico

    NASA Astrophysics Data System (ADS)

    Nino Galeano, Miguel Angel

    Fuel cells were built with poly diallydimethylammonium chloride or PDADMAC (by its initials in English) as proton exchange membrane and were compared with earlier studies of fuel cells constructed by other methods and / or materials. Also copper, aluminum and nickel were used as electrodes in the electrode membrane ensamble in search of the best performance operational cell. The results of the current were used to justify the use of PDADMAC membranes in 40% volume-volume ratio in different combinations of metals Cu-Al, Ni-Al as electrodes. For the study of conduction performance of membrane electrode ensambles (MEA), copper and aluminum were as cathode and anode for their active behavior as functional electrodes in the experimental cell, walling individually membrane types PDADMAC, PDADMAC + Buffer, PDADMAC + deionized water and PDADMAC + tap water.

  19. [Rabdomiosarcoma primario de corazón como causa de síncope recurrente en el adulto].

    PubMed

    Díaz-Pérez, Julio Alexander; Gómez-Arbeláez, Diego; Hurtado-Gomez, Gabriel Alexander

    2011-01-01

    Primary or secondary neoplasms can affect the heart. Secondary are more common. However, primary neoplasms are relevant because is a group with diverse genesis, behavior, treatment and clinical manifestations. We present a case of a 45 year-old woman, with recurrent syncope started 1 year before her first consult. She had palpitations and chest pain. Echocardiography identified a left atrium mass of 2.1x1.8 cm. Endomyocardial biopsy document a primary rhabdomyosarcoma of the heart. The patient dies after a overall-survival of 22 months. This case presented had a good study of its symptoms with an accurate diagnosis and early treatment, which provided prolonged survival of this rare and aggressive neoplasm.

  20. "Tras de un Amoroso Lance" como Estructura Expresiva (The Poem, "Behind the Amorous Cast" as an Expressive Structure).

    ERIC Educational Resources Information Center

    Bratosevich, Nicolas

    1967-01-01

    An analysis of a poem by San Juan de la Cruz (St. John of the Cross), the sixteenth century Spanish mystic, identifies symbols and images, explains themes, and offers a synthesis of his structural patterns. The poem, "Tras de amoroso lance", deals with the theme of the search of the beloved (i.e., the soul) for the lover, and…

  1. Las líneas de aluminio neutro como diagnóstico cromosférico

    NASA Astrophysics Data System (ADS)

    Fernández Borda, R.; Mauas, P. J. D.

    Se presenta un modelo atómico para el cálculo de las lí neas del Aluminio neutro que se forman en la cromósfera solar. En particular, se estudia la línea λ 3961 Å, que, por estar muy próxima a la lí nea H del Ca II y a Hɛ es muy frecuentemente observada. Observaciones en esta lí nea obtenidas con el espectrógrafo a instalarse en el CASLEO, serán utilizadas para el estudio de fulguraciones solares.

  2. Pestivirus emergentes Hobi: impacto en salud animal y su importancia como contaminante de insumos biotecnológicos

    Technology Transfer Automated Retrieval System (TEKTRAN)

    “Hobi-like” viruses are a group of emerging Pestiviruses which affect cattle and water buffaloes and are common contaminants of biological products. After the first detection from Brazilian samples in Germany in 2004, several Hobi-like isolates have been reported in Italy and some countries of Asia....

  3. 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…

  4. Como ayudar a los padres a prevenir el envenenamiento por plomo (Helping Parents Prevent Lead Poisoning). ERIC Digest.

    ERIC Educational Resources Information Center

    Binns, Helen J.; Ricks, Omar Benton

    Children are at greater risk than adults for lead poisoning because children absorb lead more readily than adults, and a small amount of lead in children's bodies can do a great deal of harm. This Spanish-language Digest summarizes some of the causes and effects of childhood lead poisoning and suggests some lead poisoning prevention strategies…

  5. Caracteristicas de la Instruccion Programada como Tecnica de Ensenanza (Characteristics of Programed Instruction as a Teaching Technique).

    ERIC Educational Resources Information Center

    Dorrego, Maria Elena

    This discussion of programed instruction begins with the fundamental psychological aspects and learning theories behind this teaching method. Negative and positive reinforcement, conditioning, and their relationship to programed instruction are considered. Different types of programs, both linear and branching, are discussed; criticism of the…

  6. 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)

  7. Significant Learning Experiences for English Foreign Language Students (Experiencias significativas para estudiantes de inglés como lengua extranjera)

    ERIC Educational Resources Information Center

    Becerra, Luz María; McNulty, Maria

    2010-01-01

    This action research examines experiences that students in a grade 10 EFL class had with redesigning a grammar-unit into a topic-based unit. Strategies were formulating significant learning goals and objectives, and implementing and reflecting on activities with three dimensions of Dee Fink's (2003) taxonomy of significant learning: the human…

  8. Programa Academico de Dominio de Ingles Como Lengua Extranjera (Academic Program in English as a Foreign Language).

    ERIC Educational Resources Information Center

    Flores Revilla, Maria Teresa; Zoreda, Margaret Lee; Vivaldo Lima, Javier; Blanco Lopez, Guadalupe; Caballero Robles, Teresita del Rosario; Mercau Appiani, Virginia

    The guide presents the newly-developed curriculum of the Universidad Autonoma Metropolitana at Iztapalapa (Mexico) for its program in English as a foreign language. An introductory section provides background information on the initiative to design a new curriculum. The second section presents the principles on which the curriculum and its methods…

  9. Como los colegios asignan y utilizan sus recursos? (How Schools Allocate and Use Their Resources). ERIC Digest.

    ERIC Educational Resources Information Center

    Picus, Lawrence O.

    School finance has traditionally concentrated on the distribution of resources to school districts, focusing primarily on the equitable distribution of funds within a state. In recent years, more attention has been paid to the issue of productivity--how effectively school districts use the funds they receive to provide education to students. This…

  10. Análise sobre o Conhecimento de um Grupo de Alunos do Ensino Médio da Rede Estadual de São Paulo sobre Termos e Fenômenos Astronômicos do Cotidiano

    NASA Astrophysics Data System (ADS)

    de Oliveira, E. F.; Voelzke, M. R.; Amaral, L. H.

    2007-08-01

    Embora os Parâmetros Curriculares Nacionais do Ensino Médio (PCN-EM) e as orientações complementares a esses Parâmetros (PCN+) apontem a importância de uma abordagem significativa de conceitos relacionados à astronomia nas aulas de Física, muitos estudantes terminam o Ensino Médio (EM) sem compreender a razão de certos acontecimentos de origem celeste, ainda que estes façam parte de seu cotidiano. Este trabalho tem por objetivo analisar os conhecimentos básicos em astronomia dos alunos de EM da escola estadual Batista Renzi, bem como investigar os meios através dos quais estes conhecimentos foram adquiridos. Para tanto foi elaborado um questionário de múltipla escolha aplicado a 310 alunos distribuídos entre as três séries do EM dos períodos matutino e noturno. Dessa forma, observou-se que apenas 34,5% relacionaram as estações do ano à inclinação do eixo de rotação da Terra, 21,3% indicaram a influência gravitacional da Lua e do Sol como responsáveis pelo fenômeno das marés, 24,5% indicaram corretamente quais são os objetos celestes mais próximos da Terra, 36,1% identificaram ano-luz como uma medida de distância e 34,2% reconheceram uma estrela cadente como meteoro. Em contrapartida, 67,1% compreendiam a sucessão entre dia e noite, 73,9% identificaram o Sol como estrela e 52,3% relacionaram o Big Bang à origem do Universo. Além disso, foram comparadas as respostas de alunos de diferentes séries e períodos, observando-se, dentre outras coisas, que os estudantes do terceiro ano apresentam um percentual de acertos semelhante ao dos alunos do primeiro, caracterizando que a abordagem de tópicos relacionados à astronomia no EM não tem contribuído para uma maior compreensão dos fenômenos e conceitos.

  11. Uso de modelos mecânicos em curso informal de astronomia para deficientes visuais. Resgate de uma experiência

    NASA Astrophysics Data System (ADS)

    Tavares, E. T., Jr.; Klafke, J. C.

    2003-08-01

    O presente trabalho propõe-se a resgatar uma experiência que teve lugar no Planetário de São Paulo nos anos 60. Em 1962, o Sr. Acácio, então com 37 anos, deficiente visual desde os 27, passou a assistir às aulas ministradas pelo Prof. Aristóteles Orsini aos integrantes do corpo de servidores do Planetário. O Sr. Acácio era o único deficiente da turma e, embora possuísse conhecimentos básicos e relativamente avançados de matemática, enfrentava dificuldades na compreensão e acompanhamento da exposição, como também em estudos posteriores. Com o intuito de auxiliá-lo na superação desses problemas, o Prof. Orsini solicitou a construção de modelos mecânicos que, através do sentido do tato, permitissem o acompanhamento das aulas e a transposição do modelo para o "constructo" mental. Essa prática mostrou-se tão eficaz que facilitou sobejamente o aprendizado da matéria pelo sujeito. O Sr. Acácio passou a integrar o corpo de professores do Planetário/Escola Municipal de Astrofísica, tendo ficado responsável pelo curso de "Introdução à Astronomia" por vários anos. Além disso, a experiência foi tão bem sucedida que alguns dos modelos tiveram seus elementos constitutivos pintados diferencialmente para serem utilizados em cursos regulares do Planetário, tornando-se parte integrante do conjunto de recursos didáticos da instituição. É pensando nessa eficácia, tanto em seu objetivo original permitir o aprendizado de um deficiente visual quanto no subsidiário recurso didático sistemático da instituição que decidimos resgatar essa experiência. Estribados nela, acreditamos ser extremamente produtivo, em termos educacionais, o aperfeiçoamento dos modelos originais, agora resgatados e restaurados, e a criação de outros que pudessem ser utilizados no ensino dessa ciência a deficientes visuais.

  12. The Co-Construction of Participation through Oral Mediation in the EFL Classroom (La co-construcción de la participación a través de la mediación en el aula de lengua extranjera)

    ERIC Educational Resources Information Center

    Herazo Rivera, Jose David; Sagre Barboza, Anamaría

    2016-01-01

    Sociocultural theory argues that an individual's mental, social, and material activity is mediated by cultural tools. One such tool is the language or discourse teachers use during whole class interaction in the second language classroom. The purpose of this study was to examine how a Colombian second language teacher mediated her ninth-grade…

  13. The Articulation of Formative Research and Classrooms Projects in the Language and Culture Class in an Undergraduate English Teaching Program (Articulación de Prácticas de Investigación Formativa con los Proyectos de Aula de las Clases de Lengua y Cultura Anglófona en un Programa de Licenciatura en Lengua Extranjera)

    ERIC Educational Resources Information Center

    Marroquín, Paula Ramírez

    2015-01-01

    This article shows the results of a research project which searched to answer how to articulate formative research with classroom projects in an undergraduate English teaching program. To accomplish the purpose of this paper, the document will focus on the two specific objectives of this qualitative research: document revision, and knowing about…

  14. Using Case Study Methodology to Approach the Views of Teachers of English on Classroom Disciplinary Strategies (Uso de la metodología de estudio de casos para aproximarse a las concepciones de profesores de inglés sobre las estrategias disciplinarias en el aula)

    ERIC Educational Resources Information Center

    Díaz Larenas, Claudio

    2012-01-01

    This qualitative study aims at identifying the disciplinary strategies claimed to be used by a group of five secondary classroom teachers of English in public or semi-public schools in Chile. To conduct this research, a semi-structured interview was applied to participants. The data were analyzed using the principles of semantic content analysis…

  15. Understanding and Facing Discipline-Related Challenges in the English as a Foreign Language Classroom at Public Schools (Comprensión y tratamiento de los retos asociados a la disciplina en el aula de lengua extranjera en escuelas públicas)

    ERIC Educational Resources Information Center

    Quintero Corzo, Josefina; Ramírez Contreras, Odilia

    2011-01-01

    Complying with school regulations and teachers' instructions is a basic principle of an excellent class; both novice and experienced teachers face challenging situations when getting into real classrooms, especially those related to classroom management. There are various reasons that explain discipline problems in public schools, as well as…

  16. From Drills to CLIL: The Paradigmatic and Methodological Evolution Towards the Integration of Content and Foreign Language (Desde las repeticiones en el aula hasta AICLE: la evolución paradigmática y metodológica hacia el aprendizaje integrado de contenido y lengua extranjera)

    ERIC Educational Resources Information Center

    Muñoz-Luna, Rosa

    2014-01-01

    Content and language integrated learning has become a common practice in European higher education. In this paper, I aim to describe how this integrated teaching practice comes as a result of a paradigmatic and pedagogical evolution. For this purpose, the main linguistic paradigms will be revisited diachronically, followed by a revision of the…

  17. La formación de la Nube de Oort y el entorno galáctico primitivo

    NASA Astrophysics Data System (ADS)

    Fernández, J. A.

    Se analizan las condiciones de formación de la nube de Oort en el medio galáctico primitivo, bajo la suposición de que los objetos que alcanzaron la nube fueron planetesimales residuales eyectados por los planetas gigantes durante las etapas finales de su acreción. Los objetos que adquieren órbitas cuasiparabólicas están sujetos a las perturbaciones de estrellas vecinas y al potencial del disco galáctico, las que desacoplan sus perihelios de la región planetaria, dando a los objetos una larga estabilidad dinámica. Se demuestra que un entorno galáctico como el presente pudo, sin embargo, no ser suficiente para formar un reservorio cometario con una vida dinámica comparable a la vida del sistema solar. La existencia de la nube de Oort después de 4600 millones de años es, pues, una fuerte indicación de que el sistema solar se formó en un entorno galáctico mucho mas denso que el presente, tal vez en una nube molecular y/o un cúmulo abierto, que es el modo de producción de la mayoría de las estrellas. Se encuentra que un campo perturbador externo mas intenso, producto de un entorno galáctico mas denso, sería capaz de formar una nube de Oort mas compacta, con un radio del orden de 103- 104 UA. El campo externo mas intenso cesó de actuar una vez que la nube molecular y/o el cúmulo abierto se disiparon, previniendo entonces que ese mismo campo externo disolviera el reservorio cometario.

  18. Modelo semi-empírico de protuberancia solar a partir del diagnóstico de densidades

    NASA Astrophysics Data System (ADS)

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

    A partir de la observación del espectro del quintuplete de C III alrededor de 1175 Å, se ha realizado el diagnóstico de la densidad y presión electrónica, basado en el cálculo del cociente de las intensidades observadas. Una vez establecida la densidad electrónica, y con el cálculo de las velocidades Doppler, hemos investigado el flujo de masa en la protuberancia en función de la temperatura. Estableciendo como hipótesis la conservación del número de partículas que ingresan y salen del cuerpo de la protuberancia, se investiga la variación del área de un tubo de flujo semi-empírico en función de la temperatura. A partir de dicho diagnóstico, se examina el comportamiento del radio del tubo magnético en función de la temperatura, los que dan cuenta de la abertura de las líneas de campo magnético que confinan el plasma y de la divergencia del campo magnético en diferentes alturas de la atmósfera solar.

  19. PubMed

    Litewka, Sergio G

    2010-11-01

    Argentina ha sido un campo fértil para los intentos de reforma del sector salud, en la búsqueda por mejorar la calidad de sus servicios y, consecuentemente, la accesibilidad y la equidad del mismo. Los resultados obtenidos no han sido proporcionales a los esfuerzos desarrollados. Aunque la bioética debería, como forma de reflexión interdisciplinaria, participar en la fundamentación de nuevas políticas sanitarias y sus efectos sobre los usuarios, parece haber permanecido ajena, en general, a los graves problemas derivados de la corrupción, prefiriendo enfocarse en cuestiones vinculadas a planteos abstractos de justicia y solidaridad, atribuyendo los fracasos a la imposición de modelos económicos foráneos.

  20. Análisis del espectro infrarrojo del polvo interestelar asociado con cúmulos globulares y de su evolución temporal

    NASA Astrophysics Data System (ADS)

    Pellizza, L. J.; Forte, J. C.; Carpintero, D.

    El trabajo que se presenta investiga la dinámica de las partículas de polvo interestelar eyectadas por estrellas gigantes rojas en un cúmulo globular utilizando simulaciones numéricas de su interacción con el campo gravitatorio y con la radiación electromagnética de las estrellas. Se pretende con ello determinar la distribución espacial de ese material como una función del tiempo en un sistema similar a NGC 104 (47 Tuc). A partir de la distribución espacial resultante se obtuvo el espectro infrarrojo integrado el cual sugiere que el máximo contraste con la radiación estelar ocurre en longitudes de onda cercanas a 300 μm y que decrece rápidamente hacia longitudes de onda menores, en las que suelen realizarse las observaciones.

  1. QUALITY, HEALTH SYSTEM AND GOVERNANCE. THE ARGENTINEAN CASE

    PubMed Central

    Litewka, Sergio G.

    2011-01-01

    Argentina ha sido un campo fértil para los intentos de reforma del sector salud, en la búsqueda por mejorar la calidad de sus servicios y, consecuentemente, la accesibilidad y la equidad del mismo. Los resultados obtenidos no han sido proporcionales a los esfuerzos desarrollados. Aunque la bioética debería, como forma de reflexión interdisciplinaria, participar en la fundamentación de nuevas políticas sanitarias y sus efectos sobre los usuarios, parece haber permanecido ajena, en general, a los graves problemas derivados de la corrupción, prefiriendo enfocarse en cuestiones vinculadas a planteos abstractos de justicia y solidaridad, atribuyendo los fracasos a la imposición de modelos económicos foráneos. PMID:21660255

  2. Dinámica global en galaxias elípticas

    NASA Astrophysics Data System (ADS)

    Pérez, M. J.; Cincotta, P. M.; Giordano, C. M.

    Con el propósito de determinar propiedades dinámicas globales en sistemas triaxiales no integrables, utilizamos una nueva herramienta conocida como ``Mean Exponential Growth factor of Nearby Orbits'' (MEGNO), introducida por Cincotta y Simó (2000). Esta técnica no sólo resulta eficiente para investigar ambas componentes del espacio fase, regular y caótica, sino que también, provee una medida de la hiperbolicidad en el dominio caótico que coincide con la dada por el Lyapunov Characteristic Number (LCN). Previamente este método ha sido aplicado al estudio de modelos simples, y últimamente en el campo de la Mecánica Celeste, al estudio de sistemas planetarios extrasolares. En esta presentación, ilustraremos algunas de las propiedades más importantes del MEGNO, aplic& acute;andolo al potencial tridimensional de Stäckel perturbado.

  3. Astronomía Mocoví

    NASA Astrophysics Data System (ADS)

    López, A.; Giménez Benitez, S.; Fernández, L.

    El presente trabajo, es una revisión crítica de la astronomía en la cultura Mocoví, aportando a lo realizado previamente por Lehmann Nistche (Lehmann Nistche, 1924 y 1927) el resultado de nuestro trabajo de campo. Un mayor conocimiento de las cosmovisiones de las etnias de esta área es fundamental para una mejor comprensión de la dispersión de las ideas cosmológicas entre los pueblos aborígenes americanos, dada la importancia del corredor chaqueño como conexión entre las altas culturas andinas, la mesopotamia y la región pampeana (Susnik, 1972). Para ello se realiza una comparación con otras cosmovisiones del área americana. Nuestro aporte se enmarca dentro de las actuales líneas de trabajo mundialmente en desarrollo en Astronomía en la Cultura.

  4. Captura de galaxias enanas en cúmulos de galaxias

    NASA Astrophysics Data System (ADS)

    Bassino, L. P.; Muzzio, J. C.; Pérez, J.

    Se investiga el proceso de captura de galaxias enanas por parte de galaxias gigantes, en presencia de un campo externo causado por materia distribuída y otras galaxias pertenecientes al cúmulo en que se produce el fenómeno. Se trabaja mediante simulaciones numéricas, generando condiciones iniciales típicas de cúmulos de galaxias y representando, con un espectro de masas, a las galaxias más masivas y, como partículas de prueba, a las enanas. Se sigue la evolución del sistema empleando un código de integración de N-cuerpos y se analizan los resultados para determinar las capturas de galaxias enanas.

  5. [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.

  6. Sobre las soluciones acotadas del problema instantáneo de dos cuerpos

    NASA Astrophysics Data System (ADS)

    Altavista, C.

    La demostración se basa en el hecho de que las integrales del problema de los N-cuerpos admiten componentes en el campo complejo según las raíces n-ésimas de la unidad. Definida la matriz unitaria correspondiente, la fórmula de Cayley permite transformar la matriz unitaria en una matriz hermitiana. Utilizando como parámetros los cosenos direccionales de un sistema de coordenadas orbitales referidos a un sistema de referencia fijo, puede construirse, utilizando el operador hermitiano antes definido, una forma cuadrática cuyas raíces mínima y máxima definen las cotas respectivas de los movimientos de los mencionados cosenos direccionales.

  7. Neutrino-driven wakefield plasma accelerator

    NASA Astrophysics Data System (ADS)

    Rios, L. A.; Serbeto, A.

    2003-08-01

    Processos envolvendo neutrinos são importantes em uma grande variedade de fenômenos astrofísicos, como as explosões de supernovas. Estes objetos, assim como os pulsares e as galáxias starburst, têm sido propostos como aceleradores cósmicos de partículas de altas energias. Neste trabalho, um modelo clássico de fluidos é utilizado para estudar a interação não-linear entre um feixe de neutrinos e um plasma não-colisional relativístico de pósitrons e elétrons na presença de um campo magnético. Durante a interação, uma onda híbrida superior de grande amplitude é excitada. Para parâmetros típicos de supernovas, verificamos que partículas carregadas "capturadas" por essa onda podem ser aceleradas a altas energias. Este resultado pode ser importante no estudo de mecanismos aceleradores de partículas em ambientes astrofísicos.

  8. Estudio teórico de moléculas de interés en Astrofísica: compuestos binarios policarbonados

    NASA Astrophysics Data System (ADS)

    Largo-Cabrerizo, A.

    Se han detectado en el espacio distintos compuestos binarios policarbonados (que se pueden formular como CnX), algunos de ellos con elementos de la primera fila del sistema periódico, pero también existen otros que contienen elementos de la segunda fila, como azufre o silicio. La información experimental sobre estos últimos compuestos es escasa, por lo que los estudios teóricos son especialmente valiosos en este campo. En esta comunicación presentaremos los avances mas recientes que sobre el tema ha realizado nuestro grupo. Incidiremos particularmente en dos aspectos. En primer lugar resumiremos los estudios en los que hemos intentado proporcionar información estructural sobre carburos metálicos formados por sodio, magnesio, aluminio o calcio, que pueda ser de ayuda a la hora de caracterizar estas moléculas en laboratorio como paso previo a su eventual detección en el espacio. Un aspecto importante dentro de este primer apartado es el análisis de las propiedades moleculares en función del tamaño del sistema (cuantificado en el numero de átomos de carbono) con el objeto de intentar sistematizar su estudio. En segundo lugar comentaremos brevemente algunos de los estudios realizados sobre posibles reacciones que pueden ser vías de síntesis de este tipo de compuestos en el medio interestelar.

  9. Effect of acclimation to outdoor condition on the sexual performance of mass-produced Medflies (Diptera: Tephritidae)

    SciTech Connect

    Pereira, R.; Silva, N.; Quintal, C.; Abreu, R.; Andrade, J.; Dantas, L.

    2007-03-15

    Application of the sterile insect technique (SIT) as part of integrated area-wide programs to control the Mediterranean fruit fly (medfly) Ceratitis capitata (Wiedemann) require that the released males attract wild females and transfer sterile sperm. However, knowledge about male sexual performance after they are released is scarce. We conducted a study to evaluate male sexual performance in field cage tests, according to standard quality control procedures. Mass-reared 5-d-old sterile males from the genetic sexing strain VIENNA 7mix2000 were acclimated for 0, 1, and 3 d to outdoor conditions before competing with wild males for wild females. Although the proportion of mating (PM) in the test was satisfactory, the resulting relative sterility index (RSI) data showed no significant differences among the treatments. The data indicate that pre-conditioning males to outdoor conditions in Madeira did not confer an advantage in field cage sexual performance. (author) [Spanish] La aplicacion de la tecnica del insecto esteril (TIE) como parte de un programa integrado de amplio efecto para el control de la mosca mediterranea de la fruta Ceratitis capitata (Wiedemann) requiere que los machos liberados atraigan las hembras naturales y transfieran su esperma. Sin embargo, el conocimiento del desempeno sexual de los machos despues de ser liberados es muy escaso. Nosotros realizamos un estudio para evaluar el desempeno sexual de los machos en pruebas usando jaulas del campo, segun los procedimientos estandardizados de calidad. Machos esteriles de 5 dias de edad de la raza que separa los sexos geneticamente VIENNA 7mix2000 criados en masa fueron aclimatados por 0, 1 y 3 dias en condiciones de campo antes de competir con machos naturales para las hembras naturales. Aunque la proporcion del apareamiento en la prueba fue satisfactorio, el indice relativo de esterilidad (IRS) resultante no mostro ninguna diferencia significativa entre los tratamientos. Los datos indicaron que al

  10. Reconstrução tridimensional de arcos magnéticos por tomografia

    NASA Astrophysics Data System (ADS)

    Simões, P. J. A.; Costa, J. E. R.

    2003-08-01

    Uma explosão solar é uma variação súbita do brilho que ocorre nas regiões ativas da atmosfera solar. Estas regiões são constituídas por um plasma magnetizado com intensa indução magnética e em cenários bem complexos como visto recentemente através de experimentos embarcados em satélites operando instrumentos em raios X moles e ultra-violeta distante. A energia magnética, que pode ser armazenada por um período de horas até dias em configurações magnéticas estressadas, é subitamente lançada na atmosfera solar e transferida para partículas como elétrons, prótons e núcleos pesados, que são acelerados e/ou aquecidos, produzindo radiação eletromagnética. A proposta final deste projeto é determinar as características espaciais de alta resolução da emissão e polarização girossincrotrônica de explosões solares em ambientes complexos de campos magnéticos. Os recentes resultados da emissão difusa em EUV apresentado pelos satélites TRACE e SOHO dos arcos magnéticos conectando as diferentes polaridades magnéticas sobre as regiões ativas possibilitam novas abordagens sobre o papel do campo magnético na emissão em rádio. Nesta etapa apresentamos os resultados da reconstrução da geometria tridimensional das linhas de força destes arcos utilizando técnicas tomográficas, a partir de imagens de alta resolução espacial obtidas pelo instrumento EIT (Extreme ultraviolet Imaging Telescope), além da modelagem das induções magnéticas por um campo dipolar e as densidades de partículas aceleradas. Utilizamos para a reconstrução geométrica, imagens tomadas em vários ângulos dos arcos devido à rotacão solar. Com estes resultados, daremos continuidade ao projeto, com os cálculos da transferência radiativa nos modos ordinário e extraordinário de propagação da radiação girossincrotrônica de explosões solares.

  11. Estudo de soluções locais e cosmológicas em teorias do tipo tensor-escalar

    NASA Astrophysics Data System (ADS)

    Silva E Costa, S.

    2003-08-01

    Teorias do tipo tensor-escalar são a mais simples extensão possí vel da Relatividade Geral. Nessas teorias, cujo modelo padrão é a teoria de Brans-Dicke, a curvatura do espaço-tempo, descrita por componentes tensoriais, aparece acoplada a um campo escalar que, de certo modo, representa uma variação na constante de acoplamento da gravitação. Tais teorias apresentam soluções locais e cosmológicas que, em determinados limites, recaem nas apresentadas pela Relatividade Geral, mas que em outros limites trazem novidades, tais como conseqüências observacionais da evolução de flutuações primordiais distintas daquelas previstas pela Relatividade Geral (ver, por ex., Nagata et al., PRD 66, p. 103510 (2002)). Graças a esta possibilidade de trazer à luz novidades em relação à gravitação, teorias do tipo tensor-escalar podem ser vistas como um interessante campo alternativo de pesquisas para soluções dos problemas de massa faltante (ou escura) e/ou energia escura. Seguindo tal linha, este trabalho, ainda em sua fase inicial, apresenta soluções gerais de teorias do tipo tensor-escalar para diversas situações, verificando-se em que consiste a divergência dessas soluções dos casos tradicionais possí veis na Relatividade Geral. Como exemplos das soluções aqui apresentadas pode-se destacar uma expressão geral para diferentes soluções cosmológicas englobando diferentes tipos de matéria (representados por diferentes equações de estado), e a expressão para uma solução local representando um buraco negro com rotação, similar à solução de Kerr da Relatividade Geral. Por fim, é importante ressaltar que, embora aqui apresentem-se poucos resultados novos, na literatura sobre o assunto a maior parte das soluções apresentadas limita-se a uns poucos casos especí ficos, tal como soluções cosmológicas apenas com curvatura nula, e que mesmo as soluções disponí veis são, em geral, pouco divulgadas e, portanto, pouco conhecidas, e

  12. The Shadow of a Gnomon Along a Year: Routine Observations and Teaching of Apparent Motion of the Sun and the Four Seasons. (Spanish Title: La Sombra de un Gnomon lo Largo de un Año: Observaciones de Rutina y la Enseñanza del Movimiento Aparente del Sol y Las Cuatro Estaciones.) A Sombra de um Gnômon ao Longo de um Ano: Observações Rotineiras e o Ensino do Movimento Aparente do Sol E das Quatro Estações

    NASA Astrophysics Data System (ADS)

    Trogello, Anderson Giovani; Danhoni Neves, Marcos Cesar; de Carvalho Rutz da Silva, Sani

    2013-12-01

    , al solsticio de junio, al equinoccio de septiembre y al solsticio de diciembre. Además, se dictaron clases teóricas en la sala de aula. Estos métodos buscaron construir conceptos en torno al movimiento aparente del Sol y la sucesión de las estaciones. Teniendo en cuenta los resultados de las actividades se aplicó una evaluación cuyos datos demuestran la existencia de un aprendizaje deseado por los estudiantes en cuanto a: el reconocimiento de los puntos cardinales, la descripción del movimiento solar aparente y la aparición de las estaciones y su alternancia a partir de observaciones astronómicas visuales sin instrumentos. Muitas concepções alternativas são reconhecidas entre os diversos grupos de estudantes, em especial nos da educação básica. Dentre elas, o movimento aparente do Sol, por mais quotidiano que seja, proporciona variadas interpretações. Deste modo, observar e registrar o movimento dos astros na abóboda celeste é uma tarefa necessária ao ensino de Astronomia. O trabalho que ora se apresenta propõe a apresentação dos resultados da observação do movimento aparente do Sol por intermédio da marcação da sombra de um gnômon vertical por alunos de uma turma do sexto ano do ensino fundamental de uma escola do campo do Paraná. O projeto em si ocorreu em quatro etapas, em datas próximas do equinócio de março, do solstício de junho, do equinócio de setembro e do solstício de dezembro. Além disso, foram desenvolvidas aulas teóricas em sala de aula. Tais métodos buscaram construir conceitos em torno da movimentação aparente do Sol e da alternância das estações do ano. Diante dos resultados provenientes das atividades desenvolvidas foi aplicada uma avaliação e os dados demonstraram um aprendizado desejado dos alunos quanto: ao reconhecimento dos pontos cardeais; à descrição do movimento solar aparente e a ocorrência das estações do ano e sua alternância a partir de observações astronômicas a olho nu.

  13. Teaching of Astronomy at Teresa Martin College. (Breton Title: Ensino de Astronomia Nas Faculdades Teresa Martin.) Enseñanza de la Astronomia en la Facultad Teresa Martin

    NASA Astrophysics Data System (ADS)

    Azevedo Sobreira, Paulo Henrique

    2005-12-01

    Courses with exclusive Astronomy contents did not exist at (FATEMA) Teresa Martin College's program until the end of 2002. In 2001, a series of educational experiments started in courses and classes of Astronomy at Mathematics and Geography departments. This actions culminated with the insertion of Teaching of Astronomy as a study theme in the course of Independent Studies for Mathematics professors in 2005. Até o final de 2002 inexistiam na grade curricular das Faculdades Integradas Teresa Martin (FATEMA) cadeiras com conteúdos exclusivos de Astronomia. A partir do ano de 2001 iniciou-se uma série de experiências educacionais através de modelos de cursos e de aulas de Astronomia nos Departamentos de Matemática e de Geografia, o que culminou com a inserção do Ensino de Astronomia como temática da disciplina de Estudos Independentes para o curso de Licenciatura em Matemática, em 2005. Hasta el final de 2002 no había en el currículo dela Facultad TeresaMartín (FATEMA) en San Pablo - SP, Brasil, disciplinas con contenidos exclusivos de Astronomía. A partir del año 2001 comenzó una secuencia de experimentos educacionales de carrera y de clases de Astronomía en los Departamentos de Matemática y Geografía, culminando en la implantación de clases de Enseñanza dela Astronomíaenla Licenciaturaen Matemática, en el año de 2003, y de la cátedra de extensión en Cosmografía parala Licenciaturaen Geografía.

  14. Aarskog syndrome

    MedlinePlus

    ... Pectus excavatum References Jones KL, Jones MC, Del Campo M. Moderate short stature, facial and genital. In: Jones KL, Jones MC, Del Campo M, eds. Smith's Recognizable Patterns of Human Malformation . ...

  15. The Use of Seaplanes as an Advanced Weapon Systemxc

    DTIC Science & Technology

    1988-09-01

    Kreniski 1 Centro Tecnico Aeroespacial -IAE-ESB 12 225 - Sao Jose dos Campos - SP, Brasil 10. Director do Centro Tecnico Aeroespacial 1 Centro Tecnico... Aeroespacial 12 225 - Sao Jose dos Campos - SP, Brasil 11. Director do Instituto de Atividades Espaciais 1 Centro Tecnico Aeroespacial - IAE 12 225 - Sao...Jose dos Campos - SP, Brasil 98 12. Chefe da Divisao de Sistemas Belicos Centro Tecnico Aeroespacial 12 225 - Sao Jose dos Campos - SP, Brasil 13

  16. Solar Physics Topics in High School: Analysis of a Course with Practical Activities at Dietrich Schiel Observatory. (Spanish Title: Temas de Física Solar Para Estudiantes de Escuelas Secundarias: un Análisis de un Curso con Enfoque Práctico en el Observatorio Dietrich Schiel.) Tópicos de Física Solar no Ensino Médio: Análise de um Curso com Atividades Práticas no Observatório Dietrich Schiel

    NASA Astrophysics Data System (ADS)

    Calbo Aroca, Silvia; Donizete Colombo, Pedro, Jr.; Celestino Silva, Cibelle

    2012-12-01

    algunos estudiantes sabían que un espectro puede estar formado por un prisma o red de difracción, la mayor parte de ellos desconocía la naturaleza de las líneas espectrales. A lo largo del curso, esta cuestión fue trabajada con un enfoque práctico mediante la observación del espectro solar y de las lámparas durante clases expositivas/dialogadas. Los resultados obtenidos en el curso mustran la importancia de los centros de ciencia como un apoyo en la educación formal. En este caso en particular, la Sala Solar del Observatorio Dietrich Schiel se destaca como un entorno favorable para la enseñanza de la física moderna en la escuela secundaria. Este trabalho analisa resultados obtidos em um curso sobre física solar para alunos do ensino médio promovido pelo Observatório Dietrich Schiel da USP. O curso foi elaborado pelos autores com a intenção de investigar concepções sobre o Sol, ensinar tópicos de física moderna relacionados ao Sol e conhecimentos gerais sobre o astro rei. A metodologia de coleta de dados consistiu em gravação em áudio e vídeo das aulas e das entrevistas semi-estruturadas, e respostas a questionários escritos. Os resultados mostraram que a maioria dos participantes concebeu o Sol como constituído por fogo e as manchas solares como buracos na superfície solar. Embora alguns alunos soubessem que um espectro pode ser formado por um prisma ou rede de difração, a maior parte deles desconhecia a natureza das linhas espectrais. Ao longo do curso, este tema foi trabalhado com uma abordagem prática com observação do espectro solar e de lâmpadas e em aulas expositivo-dialogadas. Os resultados obtidos no curso apontam para a importância dos centros de ciências como parceiros da educação formal. Neste caso específico, a Sala Solar do Observatório Dietrich Schiel é um ambiente propício para o ensino de física moderna no ensino médio.

  17. Intermitência alfvênica gerada por caos na atmosfera solar e no vento solar

    NASA Astrophysics Data System (ADS)

    Rempel, E. L.; Chian, A. C.-L.; Macau, E. E. N.; Rosa, R. R.

    2003-08-01

    Dados medidos no vento solar rápido proveniente dos buracos coronais revelam que os plasmas no meio interplanetário são dominados por flutuações Alfvênicas, caracterizadas por uma alta correlação entre as variações do campo magnético e da velocidade do plasma. As flutuações exibem muitas características esperadas em turbulência magneto-hidrodinâmica totalmente desenvolvida, tais como intermitência e espectros contínuos. Contudo, os mecanismos responsáveis pela evolução de turbulência Alfvênica intermitente não são completamente compreendidos. Neste trabalho a teoria de caos é usada para explicar como sistemas Alfvênicos, modelados pela equação Schrödinger não-linear derivativa e pela equação Kuramoto-Sivashinsky, podem se tornar fortemente caóticos à medida em que parâmetros do plasma são variados. Pequenas perturbações no parâmetro de dissipação podem fazer com que o sistema mude bruscamente de um regime periódico, ou fracamente caótico, para um regime fortemente caótico. As séries temporais das flutuações do campo magnético nos regimes fortemente caóticos exibem comportamento intermitente, em que fases laminares ou fracamente caóticas são interrompidas por fortes estouros caóticos. É mostrado que o regime fortemente caótico é atingido quando as soluções periódicas ou fracamente caóticas globalmente estáveis interagem com soluções do sistema que são fortemente caóticas, mas globalmente instáveis. Estas soluções globalmente instáveis são conjuntos caóticos não-atrativos conhecidos como selas caóticas, e são responsáveis pelos fortes estouros nos regimes intermitentes. Selas caóticas têm sido detectadas experimentalmente em uma grande variedade de sistemas, sendo provável que elas desempenhem um papel importante na turbulência intermitente observada em plasmas espaciais.

  18. [The neuroanatomy of attention deficit hyperactivity disorder: neuropsychological and clinical correlates].

    PubMed

    Albert, J; Fernandez-Jaen, A; Martin Fernandez-Mayoralas, D; Lopez-Martin, S; Fernandez-Perrone, A L; Calleja-Perez, B; Jimenez-De la Pena, M; Recio-Rodriguez, M

    2016-07-16

    Introduccion. El desarrollo de la resonancia magnetica estructural y de nuevos metodos de analisis ha permitido examinar, como nunca antes, las bases neuroanatomicas del trastorno por deficit de atencion/hiperactividad (TDAH). No obstante, poco se sabe todavia sobre la relacion de los sintomas clinicos y las disfunciones neuropsicologicas caracteristicas del TDAH con las alteraciones neuroanatomicas observadas. Objetivo. Explorar la relacion entre neuroanatomia, clinica y neuropsicologia en el TDAH. Desarrollo. A nivel de grupo, existen diferencias marcadas entre el cerebro de niños adolescentes y adultos con TDAH y el cerebro de personas con desarrollo tipico. Estas diferencias se observan transversal y longitudinalmente en todas las medidas, tanto de la sustancia gris como de la sustancia blanca. Aunque todavia escasa, cada vez existe mayor evidencia que señala que estas diferencias se relacionan con los sintomas nucleares del trastorno y con el grado de disfuncion clinica. Tambien parecen asociarse con el funcionamiento cognitivo (principalmente, atencion y control inhibitorio). Conclusiones. La relacion entre los distintos niveles de analisis de estudio del TDAH acerca la investigacion a la clinica y permite comprender y tratar mejor el trastorno. Aunque el avance en este campo es innegable, todavia son muchas las cuestiones que hay que explorar y profundizar en mayor detalle. Se requiere comprender mejor la asociacion entre las medidas neuroanatomicas y cada dimension sintomatologica, y la relacion con otros procesos neuropsicologicos tambien implicados en el trastorno.

  19. Fotometria de grupos compactos de galáxias no infravermelho próximo

    NASA Astrophysics Data System (ADS)

    Brasileiro, F.; Mendes de Oliveira, C.

    2003-08-01

    Apresentamos medidas nas bandas J, H e K de cerca de 90 galáxias em 34 grupos compactos. Através da combinação dos novos dados, com dados obtidos na literatura para a banda B, investigamos como as luminosidades, cores, tamanhos e massas das galáxias em grupos compactos foram afetadas por processos dinâmicos, e como essas diferem de galáxias em ambientes menos densos. Uma comparação dos novos valores obtidos com aqueles listados no catálogo 2MASS, mostram que para 50 galáxias estudadas em comum, as diferenças nas magnitudes J, H e K estão dentro dos erros fotométricos. Através da construção dos diagramas de cor (J-H x H-K e B-H x J-K), percebemos que as galáxias em grupos compactos ocupam posições no diagrama diferentes das posições de galáxias em campo ou em aglomerados, sendo mais parecidas com as posições ocupadas por galáxias HII, ou com excesso de poeira, acreditamos que tal deslocamento é derivado do aumento da taxa de formação estelar.

  20. Experiencias sobre el impacto del Programa de Formación en Ética de la Investigación Biomédica y Psicosocial en el ámbito de la salud mental y la investigación conductual.

    PubMed

    Barrios, Liliana Mondragón

    2012-01-01

    El propósito de este trabajo es presentar el impacto y la integración que los conocimientos adquiridos en el Programa Internacional de Formación en Ética de la Investigación Biomédica y Psicosocial de la Universidad de Chile han tenido en mi experiencia profesional, en el ámbito de la investigación psicosocial en un Instituto de Salud de México. Para este objetivo, expondré tres áreas en las cuales se ha podido evidenciar tal impacto: trabajo en los comités de ética, desarrollo de programas de académicos en bioética e investigación y publicación sobre ética y bioética. El motivo que me llevó a incursionar en el Programa fue que su enseñanza vincula la investigación psicosocial con la ética y la bioética, lo cual me permitió dirigir este tipo de reflexión hacia problemas como violencia, suicidio, adicciones, depresión y salud mental, y a nuevos campos como los estudios comunitarios, con poblaciones en riesgo o vulnerables, en los cuales las diversas implicaciones son difíciles de indagar.

  1. [Not Available].

    PubMed

    San Mauro Martín, Ismael; Garicano Vilar, Elena; León Fernández, Joana; Ciudad Cabañas, María José; Collado Yurrita, Luis

    2016-07-19

    Introducción: recientemente ha surgido el interés por el posible papel de la microbiota intestinal como agente potenciador del rápido aumento que se está observando en el aumento de la prevalencia de obesidad en todo el mundo.Objetivos: relacionar las modificaciones que puede ocasionar el consumo de antibióticos en la microflora intestinal con la obesidad.Métodos: se extrajeron, de las Encuestas Nacionales de Salud de España, entre los años 2001 y 2011, las cifras de ingesta de antibióticos y la prevalencia (%) de obesidad en el mismo rango de edad, género y año. La media total de encuestados fue de 29.904 participantes.Resultados: se encontraron correlaciones significativas (p=0,09) en la asociación de la prevalencia de obesidad y la ingesta de antibióticos. Además, se objetivó que en el sexo masculino esta influencia es el doble que en el femenino.Conclusiones: los descubrimientos recientes en el campo de la microbiota intestinal y su relación con el huésped abren nuevos caminos en la comprensión de ciertas enfermedades inflamatorias y metabólicas, como la obesidad.

  2. THAO-CHILD HEALTH PROGRAMME: COMMUNITY BASED INTERVENTION FOR HEALTHY LIFESTYLES PROMOTION TO CHILDREN AND FAMILIES: RESULTS OF A COHORT STUDY.

    PubMed

    Gómez Santos, Santiago Felipe; Estévez Santiago, Rocío; Palacios Gil-Antuñano, Nieves; Leis Trabazo, Maria Rosaura; Tojo Sierra, Rafael; Cuadrado Vives, Carmen; Beltrán de Miguel, Beatriz; Ávila Torres, José Manuel; Varela Moreiras, Gregorio; Casas Esteve, Rafael

    2015-12-01

    Introducción: la obesidad infantil es una de las principales preocupaciones de salud pública. La etiología multifactorial y multinivel requiere de intervenciones complejas como las intervenciones de base comunitaria (CBI). El Programa Thao-Salud Infantil es una CBI implementada en España desde 2007. Objetivo: mostrar la metodología Thao y los últimos resultados transversales y longitudinales. Métodos: estudio de cohortes longitudinal (4 años de seguimiento) y estudio transversal. Resultados: el estudio longitudinal encontró un incremento del 1% en la prevalencia de exceso de peso tras 4 años de implementación del Programa Thao en 10 municipios con 6.697 niños y niñas involucrados. El estudio transversal llevado a cabo con 20.636 niños y niñas de 22 municipios encontró una prevalencia de exceso de peso infantil del 26,6%. Discusión: actualmente un freno en el incremento de la prevalencia de exceso de peso infantil es considerado como un éxito debido a la alta prevalencia a nivel mundial. Son necesarios más estudios metodológicamente bien realizados para conocer la eficacia de las CBI en este campo.

  3. Experiencias sobre el impacto del Programa de Formación en Ética de la Investigación Biomédica y Psicosocial en el ámbito de la salud mental y la investigación conductual

    PubMed Central

    Barrios, Liliana Mondragón

    2012-01-01

    El propósito de este trabajo es presentar el impacto y la integración que los conocimientos adquiridos en el Programa Internacional de Formación en Ética de la Investigación Biomédica y Psicosocial de la Universidad de Chile han tenido en mi experiencia profesional, en el ámbito de la investigación psicosocial en un Instituto de Salud de México. Para este objetivo, expondré tres áreas en las cuales se ha podido evidenciar tal impacto: trabajo en los comités de ética, desarrollo de programas de académicos en bioética e investigación y publicación sobre ética y bioética. El motivo que me llevó a incursionar en el Programa fue que su enseñanza vincula la investigación psicosocial con la ética y la bioética, lo cual me permitió dirigir este tipo de reflexión hacia problemas como violencia, suicidio, adicciones, depresión y salud mental, y a nuevos campos como los estudios comunitarios, con poblaciones en riesgo o vulnerables, en los cuales las diversas implicaciones son difíciles de indagar. PMID:22754085

  4. Tips for Parents on Keeping Children Drug Free = Consejos para Los Padres Sobre Como Mantener a Los Hijos Libres de La Droga.

    ERIC Educational Resources Information Center

    Department of Education, Washington, DC. Office of Intergovernmental and Interagency Affairs.

    Research shows that recent trends in youth drug use have stabilized; however, the rates of use remain at high levels. It has been shown that the earlier drug use is initiated, the more likely a person is to develop drug problems later in life. Youth substance abuse may lead to many other problems that affect not only the child, but also the…

  5. Un currículo interdisciplinario de base teórica para enseñar inglés como segunda lengua1

    PubMed Central

    Fuentes, Brenda O.; Mas, Francisco Soto; Mein, Erika; Jacobson, Holly E.

    2013-01-01

    Among Hispanic immigrants in the United States (US), learning English is considered necessary for economic and social achievement. As a consequence, there is a high demand for English as a Second Language (ESL) classes. Despite the recognized benefits of ESL programs, both at the individual and social levels, more research is needed to identify education strategies that effectively promote all aspects of learning English as a second language. This article describes an ESL curriculum that incorporates a theory-based pedagogical approach specifically designed for immigrant Hispanic adults on the US-Mexico border region. The article also describes the implementation of the curriculum as well as the results of the evaluation, which was conducted using both quantitative and qualitative methods. Quantitative results indicate that the participants significantly improved their English proficiency (L2). Qualitative results suggest that participants were positively impacted by both the content and pedagogical approaches used by the curriculum. Their experience with the ESL class was positive in general. It can be concluded that the curriculum achieved its objective. This approach could serve as a model for second language teaching for adults. PMID:25284915

  6. Collaborative Work as an Alternative for Writing Research Articles (El trabajo colaborativo como alternativa para la escritura de artículos investigativos)

    ERIC Educational Resources Information Center

    Carvajal Medina, Nancy Emilce; Roberto Flórez, Eliana Edith

    2014-01-01

    Academic writing in English in our context is a significant aspect that can be innovative when a convergence model of writing stages is used along with collaborative work. This article reports on a study aimed at analyzing how collaborative work relates to undergraduate electronics students' academic writing development in English as a foreign…

  7. Interculturalidad y anglofonia en la ensenanza del ingles como lengua extranjera (Interculturalism and Anglophone Studies in the Teaching of English as a Foreign Language).

    ERIC Educational Resources Information Center

    Zoreda, Margaret Lee; Revilla, Teresa Flores

    This article, written in Spanish, proposes to incorporate the subject "Anglophonism" into the curriculum of English as a Foreign Language (EILE) with a view to providing universities with an intercultural division. It provides a brief summary of John Dewey's philosophy with regard to anthropology, politics, and education. It explains the term…

  8. La anglofonia y literaturas poscoloniales en la ensenanza de ingles como lengua extranjera (Anglophonism and Postcolonial Literature in Teaching English as a Second Language).

    ERIC Educational Resources Information Center

    Zoreda, Margaret Lee

    This paper, written in Spanish, focuses on the instruction of English as a Second Language in the context of cultural understanding, rather than from a purely linguistic point of view. It argues that foreign language instruction should include lessons in the field of sociology, anthropology, history, geography, politics, the arts, and popular…

  9. Estadísticas de visitas en portales web institucionales como indicador de respuesta del público a propuestas de divulgación

    NASA Astrophysics Data System (ADS)

    Lares, M.

    The presence of institutions on the internet is nowadays very important to strenghten communication channels, both internal and with the general public. The Córdoba Observatory has several web portals, including the official web page, a blog and presence on several social networks. These are one of the fundamental pillars for outreach activities, and serve as communication channel for events and scientific, academic, and outreach news. They are also a source of information for the staff, as well as data related to the Observatory internal organization and scientific production. Several statistical studies are presented, based on data taken from the visits to the official web pages. I comment on some aspects of the role of web pages as a source of consultation and as a quick response to information needs. FULL TEXT IN SPANISH

  10. Metodo de Archivar las Observaciones del Comportamiento del Nino, Como Guia para Entenderlo Mejor (Methods of Recording Observations of Children's Behavior, A Guide for Better Understanding)

    ERIC Educational Resources Information Center

    Stamp, Isla M.

    1971-01-01

    Copies of the Behaviour Study Technique described in this article may be obtained in English from the Australian Council for Educational Research, Frederick St., Hawthorn, Victoria, Australia 3122. (RY)

  11. National Dam Safety Program. Lake Como Dam (DE 00028), Delaware River Basin, Mill Creek, Kent County, Delaware. Phase I Inspection Report.

    DTIC Science & Technology

    1980-11-01

    J J WILLIAMS DACWl1-80- O -0013 uNCLASSIFIED DAEN/NAP-53842/DEOOS2B-BO/ NL LUIIIIIIEEEE IhIIIIIIIIIIIl IIIIIIIIIIIIIu IIIIIIIIIIIIII EIEIIIIIIIII...PHILADELPHIA PA 1q106 15:5 EST IMGMCOMP S.TO REPLY BY MAILGRAM. SEE RFVERSE SIDE FOR WFSTERN UNION S lOLL FI , ADA096 0bb O * BRIEN AND GERE ENGINEERS INC...Lak -e Cowm nlasfe Dam (DE 00028), Del~iturre River Basin, Un. O classifieINdONRIN M4ill Creek, Kent County, Delare 15m SCEDLEIIAIN/ONRD Phase I

  12. La Imagen Publica y Professional del Espanol en Yanquilandia - y Como Mejorarla (The Public and Professional Image of Spanish in "Yankee-Land" and How to Improve It).

    ERIC Educational Resources Information Center

    Mead, Robert G., Jr.

    1981-01-01

    Decries the stereotypes and prejudices that affect U. S. relations with the Hispanic world and with its own Hispanic minorities. Points out that these attitudes also affect the study of Spanish as a foreign language and suggests means by which educators can improve the Hispanic image among Anglo Americans. (MES)

  13. Sound in ecclesiastical spaces in Cordoba. Architectural projects incorporating acoustic methodology (El sonido del espacio eclesial en Cordoba. El proyecto arquitectonico como procedimiento acustico)

    NASA Astrophysics Data System (ADS)

    Suarez, Rafael

    2003-11-01

    This thesis is concerned with the acoustic analysis of ecclesiastical spaces, and the subsequent implementation of acoustic design methodology in architectural renovations. One begins with an adequate architectural design of specific elements (shape, materials, and textures), with the intention of elimination of acoustic deficiencies that are common in such spaces. These are those deficiencies that impair good speech intelligibility and good musical audibility. The investigation is limited to churches in the province of Cordoba and to churches built after the reconquest of Spain (1236) and up until the 18th century. Selected churches are those that have undergone architectural renovations to adapt them to new uses or to make them more suitable for liturgical use. The thesis attempts to summarize the acoustic analyses and the acoustical solutions that have been implemented. The results are presented in a manner that should be useful for the adoption of a model for the functional renovation of ecclesiastical spaces. Such would allow those involved in architectural projects to specify the nature of the sound, even though somewhat intangible, within the ecclesiastical space. Thesis advisors: Jaime Navarro and Juan J. Sendra Copies of this thesis written in Spanish may be obtained by contacting the advisor, Jaime Navarro, E.T.S. de Arquitectura de Sevilla, Dpto. de Construcciones Arquitectonicas I, Av. Reina Mercedes, 2, 41012 Sevilla, Spain. E-mail address: jnavarro@us.es

  14. 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…

  15. International Workship on Mathematical Methods in Combustion Held in Villa Olmo, Como, Italy on May 18 - 22, 1992. Program and List of Abstracts

    DTIC Science & Technology

    1992-05-22

    Olmo, Room " Olimpo " 08.30 Registration 09.15 L. De Luca, R. Reichenbach, V. Calarese Introductory Remarks ANALYTICAL FUNDAMENTALS B.V. Novozhilov...1 sposea• S etIa1 Tuesday, 19 May 1992 Villa Olmo, Room " Olimpo " 8.50 L. De Luca Introductory Remarks NUMERICAL FUNDAMENTALS A. Quarteroni chairman...Trovati: Numerical Simulation in Combustion: Industry Needs and Perspectives 1730 End of Session I Wednesday, 20 May 1992 Villa Olmo, Room " Olimpo " 08.50 L

  16. El Reto: A Leer America! A Leer Y Escribir Ya! Como Divertirse Leyendo Y Escribiendo. (America Reads Challenge: Read*Write*Now! Activities for Reading and Writing Fun)

    ERIC Educational Resources Information Center

    Kameenui, Edward J.; Simmons, Deborah C.

    Developed by national reading experts for the "America Reads Challenge: Read*Write*Now!" initiative and translated into Spanish, this booklet provides 45 ideas for families, teachers, librarians, and other learning partners to use with all children--including those with disabilities--to help them read well and independently by the end of…

  17. How To Talk to Your Teens and Children about AIDS = Como hablar con sus adolescentes y sus ninos sobre el SIDA.

    ERIC Educational Resources Information Center

    National PTA, Chicago, IL.

    Two brochures, one in English and one in Spanish, provide parents with basic information that will enable them to educate their children about Acquired Immune Deficiency Syndrome (AIDS). Contents address 11 questions: (1) What is AIDS? (2) How do you get AIDS? (3) How is AIDS not spread? (4) Who can get AIDS? (5) How can you tell if someone has…

  18. Me escuchas? Como conversar con ninos de cuatro a doce anos (Are You Listening to Me? Communicating with Children from Four to Twelve Years Old).

    ERIC Educational Resources Information Center

    Delfos, Martine F.

    Although talking to children is a daily activity for almost everyone at some stage in one's life and an essential activity for professionals who work with children, there is little research on activity. This Spanish-language book describes communication with children between the ages of 4 and 12 years, focusing on open question-and-answer sessions…

  19. "Mastery Learning" Como Metodo Psicoeducativo para Ninos con Problemas Especificos de Aprendizaje. ("Mastery Learning" as a Psychoeducational Method for Children with Specific Learning Problems.)

    ERIC Educational Resources Information Center

    Coya, Liliam de Barbosa; Perez-Coffie, Jorge

    1982-01-01

    "Mastery Learning" was compared with the "conventional" method of teaching reading skills to Puerto Rican children with specific learning disabilities. The "Mastery Learning" group showed significant gains in the cognitive and affective domains. Results suggested Mastery Learning is a more effective method of teaching…

  20. The Why, What, and How of a Bilingual Approach for Young Children [and] El Porque, el Cual y el Como de un Enfoque Bilingue para Ninos Preescolares.

    ERIC Educational Resources Information Center

    Flores, Alfredo R.; Riley, Mary Tom

    This guide, in parallel English and Spanish volumes, provides information necessary for implementing bilingual/multicultural programs. Section 1 defines and describes the bilingual approach, examining instructional goals, rationale, philosophical justification, legal foundations, and practical considerations. Section 2 discusses attitudinal…

  1. Finding an Appropriate Preschool for Your Child with Special Needs = Como Encontrar un Programa Pre-escolar para su nino con desabilidades.

    ERIC Educational Resources Information Center

    Bernstein, Sandra; Wonderlick, Mary; Madden, Drina

    This booklet, with English and Spanish versions, provides a step-by-step procedure to help families find an appropriate preschool program in the community for their child with disabilities. The booklet lists six steps for locating a program: (1) decide what kind of program is wanted for the child; (2) complete included form outlining child's needs…

  2. La efectividad de la educacion a distancia como metodologia en la desarrollo de destrezas de pensamiento (Effectiveness of Distance Education as a Methodology for Developing Thinking Skills).

    ERIC Educational Resources Information Center

    Melendez Alicea, Juan

    1992-01-01

    Presents steps taken in designing, justifying, and implementing an experimental study designed to investigate the effectiveness of distance education as a methodology for developing thinking skills. A discussion reviews major findings of the study by comparing student experiences from multimedia distance education and student experiences from…

  3. "Como Se Dice HIV?" Adapting Human Immunodeficiency Virus Prevention Messages to Reach Homosexual and Bisexual Hispanic Men: The Importance of Hispanic Cultural and Health Beliefs.

    ERIC Educational Resources Information Center

    Bowdy, Matthew A.

    HIV/AIDS prevention messages catered to Anglo homosexual/bisexual men are not effective in teaching preventative behaviors to Hispanic homosexual/bisexual men. Hispanic sociocultural traits associated with homosexuality and bisexuality prevent the effectiveness of these messages. The Hispanic family is also extremely important in influencing…

  4. "O Ensaio como Forma" ou Um Ensaio acerca da Teoria Critica da Sociedade ("The Essay as Form" or An Essay about the Critical Theory of Society).

    ERIC Educational Resources Information Center

    Giordano, Rosely

    2000-01-01

    Illuminates the critical theory project, with themes permeating the theoretical constructions of Frankfurt (Germany). Debates the predominance of positivism in the production of knowledge. Speculates that "the essay as form" constitutes itself as a representation of the concept of the Enlightenment. Concludes with a dialogue between…

  5. Como Ayudar a Su Hijo a Tener Exito en la Escuela: Guia para Padres Hispanos (Helping Your Child Find Success at School: A Guide for Hispanic Parents).

    ERIC Educational Resources Information Center

    Hine, Candis Y.

    This pamphlet guides Hispanic parents in helping their children succeed academically, based on findings from a study of 10 high-achieving Puerto Rican high school students. The students described specific family factors which supported and nurtured their academic achievement. Guidelines for parents are extracted from these factors and include: (1)…

  6. Cidadania Negada: A Educacao como Instrumento de Combate a Pobreza no Brasil (Denial of Citizenship: Education as a Way to Fight Poverty in Brazil).

    ERIC Educational Resources Information Center

    Germano, Jose Willington

    1995-01-01

    Compares two compensatory social/educational programs developed by the Brazilian government in the last 15 years. States that although one was formulated during the military regime and one during the present government, they both combat poverty and encourage privatization. Concludes that this promotes a process that sees education as social…

  7. 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,…

  8. Como Puede Mejorar el Programa de Educacion Migrante con el Poder e Influencia de los Padres. Parent Power in the Migrant Education Program: How to Make a Difference.

    ERIC Educational Resources Information Center

    National Council of La Raza, Washington, DC.

    The bilingual (English-Spanish) handbook explains the established rights that parents with children enrolled in the Elementary and Secondary Education Act Title I Migrant Education Program have and presents ways in which parents can use these rights to help ensure that their children receive a quality education. Chapters discuss: (1) content of…

  9. 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,…

  10. Como Lo Hago Yo: Anomalías del Tubo Neural en Guatemala — Mielomeningocele Unidad de Espina Bífida e Hidrocefalia

    PubMed Central

    Manucci, Graciela; von Quednow, Enzo

    2014-01-01

    En Guatemala nacen por añ 786 niños con defectos de tubo neural. Operamos 65 a 70 niños con mielomenigocele por año. Tenemos equipo multidisciplinario. Recomendamos parto por cesárea. Infección antes de la cirugía es un problema mayor. Derivación tardía es un problema. Disecamos la plaqueta con la técnica clásica. Suturamos la plaqueta para restituir la forma de la médula. Corpectomía en casos de cifósis. Hidrocefalía: Operamos el 80% de los niños. Chiari II: Operamos basados en los síntomas, primero nos aseguramos que la válvula funciona bien. Médula anclada: Operamos basados en los síntomas. PMID:24791216

  11. Prevalence of sarcopenia among community‐dwelling elderly of a medium‐sized South American city: results of the COMO VAI? study

    PubMed Central

    Bielemann, Renata M.; Gonzalez, Maria Cristina; Menezes, Ana Maria B.

    2015-01-01

    Abstract Background There is insufficient data concerning sarcopenia prevalence in South America. The aim of this study was to estimate sarcopenia prevalence and its clinical subgroups in a Southern Brazilian city. Methods A cross‐sectional population‐based study was performed among community‐dwelling elderly aged 60 years or over. Subjects were evaluated according to the European Working Group on Sarcopenia in Older People established criteria. Muscle mass was estimated by calf circumference (CC). Cut‐off CC points were defined by a subsample's dual X‐ray absorptiometry estimation of the appendicular skeletal muscle mass index (ASMI), which was subsequently compared with the values of a young adult population from the same city. Muscle strength was measured by manual dynamometry. Muscle performance was assessed through the 4 m gait speed test. Results The three diagnostic tests were performed in 1291 subjects. CC of ≤34 cm (males) and ≤33 cm (females) were defined as indicatives of low ASMI. The overall sarcopenia prevalence was 13.9% (CI95% 12.0; 15.8%). Its frequency was significantly higher among elderly with low schooling, without a partner, with low socioeconomic status, smokers, inactive, and with low body mass index. A higher prevalence of pre‐sarcopenia was found in the youngest elderly; a higher prevalence of the clinical stages of the syndrome was found in older age groups. Conclusions Approximately one in ten elderly aged 60–69 years was in the preclinical stage of the disease. This is the age group in which public policies should focus to establish early diagnosis and prevent clinical progression of the syndrome. PMID:27493867

  12. The Accented EFL Teacher: Classroom Implications (El acento del profesor de inglés como lengua extranjera: implicaciones pedagógicas)

    ERIC Educational Resources Information Center

    Arboleda Arboleda, Argemiro; Castro Garcés, Ángela Yicely

    2012-01-01

    This article reports the findings of a research study on how significant having a foreign accent is for non-native English as a foreign language teachers and learners at university level. It points out the perceptions that teachers and students have about the most relevant issues in the teaching and learning processes. Data were collected by means…

  13. The Nature of Recognition in TEFL Teachers' Lives (La naturaleza del reconocimiento en la vida de los maestros de inglés como lengua extranjera)

    ERIC Educational Resources Information Center

    Scholes Gillingsde González, Barbara

    2011-01-01

    This article aims at sharing a vital issue that emerged from the findings of a qualitative research study into collective responses of teachers of English as a foreign language to an extended change process in their Mexican university context from 1989 to 2003. The data generation process employed was comprised of semi-structured interviews as…

  14. Planeamiento de la unidad didactica en le ensenanza del ingles como idioma extranjero (Planning the Teaching Unit in the Instruction of English as a Foreign Language).

    ERIC Educational Resources Information Center

    Medina T., Rene

    1971-01-01

    This paper discusses the use of the teaching unit as a means for organization in English-as-a-foreign-language classes. It lists the essential elements in the construction of such a unit: cultural topic, linguistic elements, time period, main objectives, instructional materials, focus, specific activities, intended results, evaluation techniques,…

  15. Como los padres ocupados pueden ayudar a sus hijos a aprender y desarrollarse (How Busy Parents Can Help Their Children Learn and Develop). Early Childhood Digest.

    ERIC Educational Resources Information Center

    Mayer, Ellen; Kreider, Holly; Vaughan, Peggy

    Although parents are often very busy with work and family responsibilities, there are many things they can do to help their school-age children learn and develop. This Spanish-language early childhood digest for parents provides tips obtained from parents of first and second graders in the School Transition Study on creative ways to stay involved…

  16. Opportunities and challenges in ovarian cancer research, a perspective from the 11th Ovarian cancer action/HHMT Forum, Lake Como, March 2007.

    PubMed

    Ashworth, Alan; Balkwill, Frances; Bast, Robert C; Berek, Jonathan S; Kaye, Allyson; Boyd, Jeffrey A; Mills, Gordon; Weinstein, John N; Woolley, Katie; Workman, Paul

    2008-03-01

    Advances in surgery and chemotherapy have improved the 5-year survival for patients with epithelial ovarian cancer, but have not impacted on the ultimate rate of cure in a disease that is diagnosed in late stage and that recurs in the majority of patients. "Omic" technologies promise to define genetically driven aberrant signaling pathways in malignant cells, provided that bioinformatic expertise can be focused on a cancer that is neither common nor rare. Molecular therapeutics must be linked to molecular diagnostics to permit individualized therapy. Not only epithelial cancer cells but also stroma, vasculature and the immune response must be targeted. Closer collaboration between academic institutions, biotech and pharma will be required to facilitate this process and to interest the private sector in an orphan disease. New preclinical models may permit more efficient development of drugs and siRNA that can target dormant drug resistant stem cells. Strategies must be developed to deal with the heterogeneity of different grades and histotypes. Identification of women at increased risk will facilitate prevention and early detection in subsets of patients. BRCA1/2 might be sequenced in all ovarian cancer patients to identify new kindreds. Epidemiologic algorithms are being developed and validated. Awareness must be raised that oral contraceptives can reduce risk of developing ovarian cancer by 50%. Early detection is likely to require panels of complementary biomarkers, analyzed by sophisticated statistical techniques, to improve sensitivity while maintaining extremely high specificity. As ovarian cancer becomes a chronic disease, greater emphasis will be placed on the challenges facing survivors.

  17. Field technique of permeability tests in highly fissured limestone strata

    NASA Astrophysics Data System (ADS)

    Al-Salihi, Adnan; Asaad, Abdulah

    2002-05-01

    Résumé.L'étude de dispositifs de dénoyage est nécessaire pour l'amélioration de sites avant la construction de certaines structures. L'étude de dispositifs de dénoyage efficaces exige d'estimer la valeur du coefficient de perméabilité in situ. Les relations disponibles pour estimer le coefficient de perméabilité ont été développées sur la base de mesures et de conditions de terrain limitées, et les prédictions varient de plusieurs ordres de grandeur. C'est pourquoi il est nécessaire de réaliser des mesures de perméabilité sur le terrain et de déterminer la relation qui permet le meilleur ajustement de ces mesures avant l'étude du dispositif de dénoyage pour des conditions locales et géologiques spécifiques. Ce papier présente des mesures de perméabilité sur le terrain dans des niveaux calcaires complexes chaotiques et diagénétisés. Il propose également une analyse comparative de plusieurs relations disponibles dans la littérature destinées à prédire le coefficient de perméabilité in situ. L'analyse est faite en conditions permanentes et non permanentes. Les résultats montrent que la valeur du coefficient de perméabilité dépend du niveau de la nappe, qui est affecté par le régime de marées. On montre que l'équation de l'US Navy donne la meilleure corrélation avec les mesures de terrain. Resumen.El diseño de sistemas de desecado es necesario para mejorar las condiciones de un emplazamiento antes de la construcción de determinadas estructuras. El diseño de un sistema eficiente de desecado requiere de la estimación del valor de la permeabilidad in-situ. Las relaciones disponibles para tal fin han sido desarrolladas bajo condiciones y medidas de campo limitadas; sus predicciones varían en algunos órdenes de magnitud. Por tanto, es necesario tomar medidas de permeabilidad en campo y determinar la relación que reproduce mejor dichas medidas como paso previo al diseño de un sistema de desecado en condiciones geol

  18. Los manuales de quimica en Espana (1788--1845): Protagonistas, terminologia, clasificaciones y orden pedagogico

    NASA Astrophysics Data System (ADS)

    Munoz Bello, Maria Rosa

    para poder llegar a conclusiones validas. Por ello, se ha adoptado como nucleo de este trabajo la definicion de libro de texto basada en su destino y no en su funcion, es decir, los libros que de forma explicita expresan su finalidad didactica, tanto en el titulo o como en las declaraciones del autor reflejadas en el prologo de la obra, en los que ademas aparezca la palabra quimica en su titulo. El estudio comienza en 1788 con la publicacion de algunos de los primeros manuales de quimica modernos, y acaba con la reforma educativa de 1845, que tuvo importantes consecuencias en el mercado de libros de texto en Espana. Esta reforma separaba la ensenanza media de la propiamente universitaria y, de este modo, fue impulsora de la creacion de institutos provinciales de segunda ensenanza, algunos de los cuales habian comenzado su andadura en los anos anteriores. Las regulaciones introducidas suponian una fuerte limitacion para los profesores en la eleccion de los manuales de ensenanza que debian ser aprobados cada tres anos por el Consejo de Instruccion Publica. Ademas supuso una reglamentacion clara de los estudios de filosofia y su division en los estudios elementales y superiores. La investigacion se ha distribuido a lo largo de seis capitulos: Introduccion, los protagonista, el vocabulario de la quimica, poniendo orden: las clasificaciones quimicas, conclusiones y apendice. En primer lugar, se ha elaborado un repertorio bibliografico, incluido en el apendice, constituido por 76 obras de quimica publicadas en Espana desde 1788 hasta 1845 que permite realizar un analisis estadistico de su produccion. Posteriormente, se intenta conocer los principales protagonistas en la creacion del libro: editores, impresores, autores, traductores y lectores. Tradicionalmente los historiadores de la ciencia han dado mas importancia a los laboratorios y a los personajes de la investigacion cientifica, frente a las aulas y a los protagonistas de la ensenanza. La situacion ha cambiado en las

  19. 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

    interpretación, lo que nos permite comprender los significados asignados por el estudiante a estos conceptos. Se desprende de la evaluación diagnóstica que la mayoría de los encuestados ha tenido dificultades para exponer los conceptos científicos sobre el Universo y la Tierra, para iniciar el 6 º grado. Sin embargo, se identificaron ideas relevantes y las representaciones que contribuyeron a la re-significación de los conceptos científicos propuestos para la enseñanza del tema en esta serie. Los resultados de la evaluación diagnóstica han servido como referencia para la organización del Programa, facilitando el proceso de aprendizaje, haciendo coincidir la secuencia didáctica a las características de los estudiantes y el contexto del aula. Se espera que el instrumento presentado en este documento también pueda ser utilizado por otros investigadores en investigaciones relacionadas con el tema. Este artigo tem como objetivo apresentar os resultados de uma avaliação diagnóstica, utilizada como instrumento para a coleta de dados sobre o conhecimento prévio de conceitos científicos, necessários à compreensão do tema Terra e Universo, de um grupo composto por 47 estudantes, da 6ª série do Ensino Fundamental. A ação pedagógica de diagnosticar os conhecimentos prévios, do estudante, antes de ensiná-los, tem fundamento na teoria da Aprendizagem Significativa, proposta por David Ausubel. Essa avaliação diagnóstica foi composta por 25 questões, cujas respostas foram analisadas e categorizadas visando sua interpretação, o que permitiu compreender os significados atribuídos pelo estudante a esses conceitos. Conclui-se, a partir da avaliação diagnóstica, que a maioria dos estudantes pesquisados apresentou dificuldades em expor conceitos científicos sobre o tema Terra e Universo ao iniciar a 6ª série. Entretanto, foram identificadas ideias e representações relevantes que contribuíram para a (re)significação dos conceitos científicos propostos

  20. On ambiente de binárias de pequena massa em formação: o caso do glóbulo cometário CG30 e IRAS08076-3556

    NASA Astrophysics Data System (ADS)

    Hickel, G. R.; Vilas-Boas, J. W. S.

    2003-08-01

    Neste trabalho, combinamos observações de polarização linear no óptico (banda R), dados no infravermelho distante (IRAS) e observações de transições moleculares em radiofreqüências (CO e espécies isotópicas, HCN e HCO+) para analisar o glóbulo cometário (GC) CG30 (na região da IRAS Vela Shell), que apresenta objetos Herbig-Haro e ejeções de matéria, além de uma fonte pontual IRAS em seu interior. Os objetivos deste estudo são: determinar a eficiência de formação estelar nos glóbulos cometários, através da relação entre a massa total do GC e da massa das estrelas em formação; determinar como o campo magnético influencia na formação de estrelas no interior destes objetos; e analisar as modificações que ejeções de matéria de estrelas em formação causam no gás e no campo magnético dos GCs. Combinando nossos dados com trabalhos já publicados, mostramos que CG30 tem uma eficiência de formação estelar em torno de 3%; que o campo magnético é importante na manutenção da estrutura global do GC e demonstra sinais de torção e compressão; e que a ejeção bipolar de matéria das estrelas do par formam uma ejeção quadripolar, a qual influencia na densidade e temperatura do gás e no grau de polarização dos grãos de poeira associados ao gás do GC.

  1. Percepção astronómica de um grupo de alunos do ensino médio de uma escola da rede estadual de São Paulo

    NASA Astrophysics Data System (ADS)

    de Oliveria, E. F.; Voelzke, M. R.

    2009-03-01

    Sendo a Astronomia uma das cièncias mais antigas da humanidade, e considerando sua importáncia histórica e cultural, é de extrema releváncia que tópicos relacionados a ela sejam tratados nas escolas. Embora os Parámetros Curriculares Nacionais do Ensino Médio (PCN-EM) e as Orientaçiacute;es Complementares aos Parámetros (PCN+) apontem a importáncia de uma abordagem significativa de conceitos relacionados à Astronomia nas aulas de Física, muitos estudantes terminam o Ensino Médio (EM) sem compreender a razão de certos acontecimentos de origem celeste, ainda que estes façam parte de seu cotidiano e sejam alvos da curiosidade natural dos jovens. Da observação dessa curiosidade em alunos de uma escola pública paulista, na cidade de Suzano, surgiu o interesse em investigar os conhecimentos básicos em Astronomia dos alunos do Ensino Médio desta escola, constituindo-se este como principal objetivo desta pesquisa. Para tanto foi elaborado um questionário de múltipla escolha aplicado inicialmente a 34 alunos do primeiro ano e, posteriormente, a mais 310, distribuídos entre as très séries do Ensino Médio dos períodos matutino e noturno. Dessa forma, observou-se que 73,9% dos estudantes identificaram o Sol como sendo uma estrela, 67,1% mostraram compreender a sucessão entre dia e noite e 52,3% relacionaram o Big Bang à origem do Universo. Em contrapartida, apenas 34,5% relacionaram as estaçíes do ano à inclinação do eixo de rotação da Terra, 21,3% indicaram a influència gravitacional simultánea da Lua e do Sol como responsável pelo fenòmeno das marés, 24,5% indicaram corretamente quais são os objetos celestes mais próximos da Terra, 36,1% identificaram ano-luz como uma medida de distáncia e 34,2% reconheceram as estrelas cadentes como meteoros, evidenciando-se assim o pequeno discernimento dos estudantes quanto aos fenòmenos e termos astronòmicos do cotidiano. Além disso, foram comparadas as respostas de alun! os de diferentes s

  2. [Asomatognosia as a manifestation of migraine with aura. case report and review].

    PubMed

    Scribano Parada, María de la Paz; Buonanotte, Carlos Federico

    2015-01-01

    Introducción: Durante años el estudio de la migraña con aura ha sorprendido por la versatilidad de su forma de presentación. Las auras se manifiestan con el desarrollo gradual de síntomas neurológicos que van desde alteraciones visuales hasta trastornos de la percepción. Estos últimos son formas de presentación poco frecuentes siendo el motivo de este artículo. Caso Clínico: Se presenta el caso de una paciente de sexo femenino de 53 años con diagnóstico de migraña con aura la cual hace un relato autobiográfico de sus crisis, con especial énfasis en una variante de asomatognosia como forma de presentación. A continuación se discute sobre la asomatognosia como un fenómeno perteneciente a las alteraciones del esquema corporal y los diferentes conceptos y formas clínicas relacionados con estas y se hacer un breve repaso sobre las posibles localizaciones anatómicas de estas afecciones. Conclusión: La migraña con aura puede manifestarse con una variada sintomatología previa al dolor. La asomatognosia es una forma infrecuente de presentación. Un campo de interés en la investigación de esta área incluyen un esfuerzo por definir la especificidad y localización de la lesión como un método para la mejor comprensión de cómo las lesiones a áreas muy específicas del cerebro afectan la percepción y la memoria.

  3. Perda de massa em ventos empoeirados de estrelas supergigantes

    NASA Astrophysics Data System (ADS)

    Vidotto, A. A.; Jatenco-Pereira, V.

    2003-08-01

    Em praticamente todas as regiões do diagrama HR, as estrelas apresentam evidências observacionais de perda de massa. Na literatura, pode-se encontrar trabalhos que tratam tanto do diagnóstico da perda de massa como da construção de modelos que visam explicá-la. O amortecimento de ondas Alfvén tem sido utilizado como mecanismo de aceleração de ventos homogêneos. Entretanto, sabe-se que os envelopes de estrelas frias contêm grãos sólidos e moléculas. Com o intuito de estudar a interação entre as ondas Alfvén e a poeira e a sua conseqüência na aceleração do vento estelar, Falceta-Gonçalves & Jatenco-Pereira (2002) desenvolveram um modelo de perda de massa para estrelas supergigantes. Neste trabalho, apresentamos um estudo do modelo acima proposto para avaliar a dependência da taxa de perda de massa com alguns parâmetros iniciais como, por exemplo, a densidade r0, o campo magnético B0, o comprimento de amortecimento da onda L0, seu fluxo f0, entre outros. Sendo assim, aumentando f0 de 10% a partir de valores de referência, vimos que aumenta consideravelmente, enquanto que um aumento de mesmo valor em r0, B0 e L0 acarreta uma diminuição em .

  4. [Generation and functions of dreams].

    PubMed

    Medrano-Martínez, Pablo; Ramos-Platón, M José

    2014-10-16

    Introduccion. En la ultima decada han aumentado considerablemente las publicaciones sobre los ensueños, lo que refleja el interes de varios campos de la neurociencia por el tema. En este trabajo se revisan las principales teorias cientificas que han contribuido al conocimiento de como se producen y cual es su funcion. Desarrollo. Se expone la evolucion de su estudio cientifico, siguiendo el enfoque neurofisiologico y el neurocognitivo. El primero busca determinar los mecanismos neurobiologicos que los generan y las estructuras cerebrales implicadas; el segundo considera los ensueños un tipo de cognicion en interaccion con el de vigilia. Se examinan diversas hipotesis sobre la funcion de los ensueños, en particular las que les atribuyen un papel en la consolidacion de la memoria y la regulacion del estado emocional. Conclusiones. Aunque no se ha determinado con exactitud como se generan los ensueños, los datos neurobiologicos resaltan la importancia de los nucleos pontinos del tronco cerebral, diversos sistemas de memoria, el sistema limbico y el sistema de recompensa cerebral y diversas areas neocorticales. Los datos neurocognitivos subrayan la relacion entre el procesamiento cognitivo y emocional que ocurre durante la vigilia y durante el sueño, asi como la influencia del entorno en el contenido de los ensueños. Respecto a su funcion, cabe destacar su valor adaptativo, al contribuir al reprocesamiento de la informacion adquirida en vigilia y al control de las emociones. Esto sugiere que los ensueños participan en el desarrollo de las capacidades cognitivas.

  5. A estabilidade dos PAHS em função da energia da radiação interestelar nas faixas UV e raios-X

    NASA Astrophysics Data System (ADS)

    Pinotti, R.; Costa, R. K.; Boechat-Roberty, H. M.; Lago, A.; Souza, G. B.

    2003-08-01

    A nebulosa CRL 618, uma proto-nebulosa planetária cuja nuvem molecular espessa envolve uma estrela B0, contém uma grande quantidade de C2H2 e CH4. Estas moléculas são consideradas os tijolos da criação de grandes moléculas carbonadas como os Hidrocarbonetos Policíclicos Aromáticos (PAHs). Esta nebulosa, por estar exposta a intensos campos de UV e Raios-X, é uma região de fotodissociação molecular que propicia a formação de novas moléculas, confirmada pela presença de C4H2 e C6H6 (Benzeno), que é a unidade básica dos PAHs. Atribui-se a esta família de moléculas orgânicas duas propriedades fundamentais, a resistência para sobreviver ao campo de radiação UV interestelar e a geração das bandas de emissão não identificadas (UIR) observadas no infravermelho. No entanto, alguns autores questionam a resistência dos PAHs ao campo de radiação UV interestelar. Empregando a técnica de Espectrometria de Massas por Tempo de Vôo, no modo de coincidência fotoelétron-fotoíon, estudamos a ionização e fragmentação das seguintes moléculas: Benzeno, Benzeno deuterado, Naftaleno, Antraceno e Fenantreno. Utilizamos uma fonte de Hélio monocromática em 21,21 eV (584,5 Å) e a radiação Síncroton do Laboratório Nacional de Luz Síncroton (LNLS) em diferentes energias nas proximidades da borda do C 1s ( 290 eV). Comprovamos a estabilidade dos PAHs sob ação de UV (21,21 eV), onde eles apresentam um baixo nível de fotodissociação, produzindo fragmentos ionizados com rendimento total na ordem de 5 por cento em relação ao íon molecular pai. Entretanto, em altas energias, na faixa de Raios-X, a quebra destas moléculas torna-se mais intensa, com a produção de muitos fragmentos. Como uma das rotas de fragmentação do Naftaleno é [(C10H8) = > (C6H6+) + (C4H2) + (e-)], e como temos as evidências observacionais da existência do C4H2 e C6H6 na nebulosa CRL 618, sugerimos que este ambiente também possui o Naftaleno.

  6. Communicacion Expresiva: Como los ninos nos envian mensajes [and] Comunicacion Receptiva: Como los ninos entienden nuestros mensajes [and] Interacciones de Comunicacion: Hacen falta dos. Hojas informativa de DB-LINK (Communication Interactions: It Takes Two [and] Receptive Communication: How Children Understand Your Messages to Them [and] Expressive Communication: How Children Send Their Messages to You. DB-LINK Fact Sheets).

    ERIC Educational Resources Information Center

    Stremel, Kathleen

    This document consists of three separately published fact sheets combined here because of the close relationship of their subject matter. The first fact sheet, "Communication Interactions: It Takes Two" (Kathleen Stremel), defines communication; suggests ways to find opportunities for interactive communication; offers specific suggestions for…

  7. Influence of Uncertainty and Time Stress on Decision Making

    DTIC Science & Technology

    1993-10-01

    attack up the Aula River valley, nearly resulting in a rout of the troops in that sector; however, a new defensive line has been established west of...have an effect on logis- tic operations, see Civil-Military Ope’:ations Overlay 2 (omitted). A-63 The refugee control and evacuation problem is acute... AULA River south of KIRCHHOEIH and are attacking TF 1-81 and TF 1.82. TF 1-81 has withdrawn to defensive positions from NB3735 southward to NB3632 where

  8. Six-Phase Heating(trademark) Pilot-Scale Test. Technology Performance Report, Dense Non-Aqueous Phase Liquid, Eastern Parking Lot Groundwater Plume. Air Force Plant 4, Fort Worth, Texas

    DTIC Science & Technology

    2001-05-01

    AUI Un, TIc . 78711 , 800 803 9202 EXT. g 1) OWNER USAFILMTA$ ADORESS P.O, BOX 748 FORT WORTH TX 78101 ( INAME) (Slreet or AFD) IClty ) (Stata) IZlp...tnstalled [Rula 338.44(2)(A)) -- Specil1ed Steal Sleeva Installed [ Aula 339.44(3)(A)1 -14) WELL TESTS: Nt A - Pille .. Adapter Used [ Aula 338.44(3)(bll...COMPLETION -Oepth to pump bowts. cylinder, jtl, tic ., II . - Specllied Surface Stab Installed (Aule 338.44(2)(A)] :: Specified Steel Sleeve Installed

  9. Sexual selection on multivariate phenotypes in Anastrepha Fraterculus (Diptera: Tephritidae) from Argentina

    SciTech Connect

    Sciurano, R.; Rodriguero, M.; Gomez Cendra, P.; Vilardi, J.; Segura, D.; Cladera, J.L.; Allinghi, Armando

    2007-03-15

    Despite the interest in applying environmentally friendly control methods such as sterile insect technique (SIT) against Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae), information about its biology, taxonomy, and behavior is still insufficient. To increase this information, the present study aims to evaluate the performance of wild flies under field cage conditions through the study of sexual competitiveness among males (sexual selection). A wild population from Horco Molle, Tucuman, Argentina was sampled. Mature virgin males and females were released into outdoor field cages to compete for mating. Morphometric analyses were applied to determine the relationship between the multivariate phenotype and copulatory success. Successful and unsuccessful males were measured for 8 traits: head width (HW), face width (FW), eye length (EL), thorax length (THL), wing length (WL), wing width (WW), femur length (FL), and tibia length (TIL). Combinations of different multivariate statistical methods and graphical analyses were used to evaluate sexual selection on male phenotype. The results indicated that wing width and thorax length would be the most probable targets of sexual selection. They describe a non-linear association between expected fitness and each of these 2 traits. This non-linear relation suggests that observed selection could maintain the diversity related to body size. (author) [Spanish] A pesar del interes por la aplicacion de metodos de control de bajo impacto ambiental sobre Anastrepha fraterculus (Diptera: Tephritidae), como la Tecnica del Insecto Esteril (TIE), no existe aun informacion suficiente sobre su biologia, taxonomia y comportamiento. Este trabajo tiene como objetivo evaluar el desempeno de moscas en jaulas de campo a traves del estudio de la competitividad sexual entre machos salvajes (seleccion sexual). Para ello, se muestreo una poblacion de Horco Molle, Tucuman (Argentina). En jaulas de campo se liberaron machos y hembras adultos

  10. Boletim and Arquivos: scientific communication until the creation of the Revista de Saúde Pública.

    PubMed

    Marques, Maria Cristina da Costa; Dolci, Mariana de Carvalho

    2016-10-24

    Based on historical references of scientific communication, we analyzed the issues of the Boletim do Instituto de Higiene de São Paulo and of the Arquivos da Faculdade de Higiene e Saúde Pública da Universidade de São Paulo. Published respectively from 1919 to 1946 and from 1947 to 1966, they totaled 120 issues. In their 48 years of publication, their goal was to disseminate the scientific production of the institution and to legitimize the theoretical debate of the field, in addition to supporting the public health intervention models, written by leading researchers of the institution and by contributors and managers in the field of public health. Both the Boletim and the Arquivos were recognized as scientific communication of national reference, and have laid the foundations for the creation of the Revista de Saúde Pública, in 1967. RESUMO Com base em referenciais históricos da comunicação científica, foram analisadas as edições do Boletim do Instituto de Higiene de São Paulo e dos Arquivos da Faculdade de Higiene e Saúde Pública da Universidade de São Paulo. Publicadas respectivamente de 1919 a 1946 e de 1947 a 1966, totalizam 120 edições. Em seus 48 anos de publicação, o objetivo era disseminar a produção científica da instituição e legitimar o debate teórico do campo, além de apoiar os modelos de intervenção de saúde pública, escrita por importantes pesquisadores da instituição e colaboradores e gestores do campo da saúde pública. Tanto o Boletim como os Arquivos foram reconhecidos como comunicação científica de referência nacional e lançaram as bases para a criação da Revista de Saúde Pública, em 1967.

  11. Cálculos ab initio con correlación electrónica

    NASA Astrophysics Data System (ADS)

    Merchán Bonete, M.

    Estamos entrando en una era donde la ortogonalidad entre las investigaciones de carácter experimental y de naturaleza teórica se irá difuminando progresivamente y la problemática a resolver quedará en escena como el único actor principal de la obra. Como premisa para una cooperación teórico-experimental de igual a igual, la metodología químico-cuántica utilizada debe ser capaz de ofrecer resultados de carácter predictivo. Sin duda, esta madurez en la metodología químico-cuántica ya la hemos alcanzado hace algunos años, tal y como muestra entre otras muchas, la labor que nuestro grupo ha realizado en el transcurso de la última década, dentro del campo de la Espectroscopía Teórica. Los estudios realizados comprenden una amplia gama de sistemas, variando tanto en tamaño como en complejidad, abordando problemáticas espectroscópicas consideradas tradicionalmente como especialmente controvertidas. Nuestra contribución científica más relevante reside en el carácter cuantitativo de las asignaciones espectroscópicas que hemos propuesto en base a resultados ab initio. Recordemos que en los años noventa los resultados ab initio solían presentar para las energías de excitación de sistemas de tamaño molecular moderado, como el benceno, errores de más de 1 eV. En comparación con el éxito relativo de los métodos semiempíricos, la frustración de la metodología ab initio quedaba todavía más patente. Los estudios que hemos presentado representan una comprensión profunda de los espectros electrónicos en sistemas orgánicos claves, mostrando el camino a seguir para obtener asignaciones espectroscópicas precisas (entre 0.1-0.2 eV). La naturaleza del método CASPT2 junto al diseño de estrategias computacionales nos ha permitido alcanzar el carácter cuantitativo con el que se caracterizan nuestras contribuciones[1,2]. Por todo ello, algunos de los trabajos publicados se consideran clásicos dentro del campo, pues en cierto modo definen el

  12. Quality control method to measure predator evasion in wild and mass-reared Mediterranean fruit flies (Diptera: Tephritidae)

    SciTech Connect

    Hendrichs, M.; Wornoayporn, V.; Hendrichs, J.

    2007-03-15

    varias razones, incluyendo perdidas debidas a diferentes tipos de depredadores. Estudios anteriores conducidos en el campo, y en jaulas de campo, han confirmado que las cepas de machos de laboratorio tienen menos capacidad de evadir depredadores que los machos silvestres. Estos estudios involucran, sin embargo, una considerable cantidad de manipulacion y observacion de depredadores, por lo que no son adecuados para ser usados como medidas rutinarias en los programas de cria masiva. Aqui describimos un metodo sencillo de control de calidad usando aspiradores para medir agilidad en la mosca del Mediterraneo y mostramos que este parametro esta relacionado a la capacidad de la moscas a evadir a depredadores. Aunque aun es necesario refinar la estandarizacion de este metodo para permitir la comparacion entre cepas, los resultados confirman la importancia de tener un metodo rutinario para medir la capacidad de evasion de depredadores en cepas de cria de laboratorio de la mosca del Mediterraneo. Ademas de medir este parametro de control de calidad de los machos esteriles, el metodo descrito podria tambien ser usado para la seleccion sistematica de cepas con una mayor capacidad de evasion de depredadores. (author)

  13. Memories of Astronomy Education in Brazil: Clippings from the Discourses of Interviewed Researchers on the Subject. (Spanish Title: Memorias de la Educación en Astronomía en Brasil: Recortes de los Discursos de Investigadores Entrevistados Acerca del Tema ) Memórias da Educação em Astronomia no Brasil: Recortes a Partir das Falas de Pesquisadores Entrevistados sobre o Tema

    NASA Astrophysics Data System (ADS)

    Iachel, Gustavo; Nardi, Roberto

    2014-12-01

    This paper presents a historical retrospective concerning data from a research in Astronomy Education in Brazil, after 1973. It was organized on the basis of the speech analysis of national researchers considered references in this field by their peers. Furthermore, it was elaborated on the basis of other studies from the areas of Science Education, Physics and Astronomy. This historical overview was developed in order to facilitate understanding of the contexts in which the interviewed researchers have developed professionally. Moreover, we attempted to recover the memory of the growing field of research in Astronomy Education in the country. We believe that the history presented can help those trying to understand the past in an attempt to resolve current and future demands. Se presenta en este artículo una retrospectiva histórica referente a datos provenientes de la investigación en enseñanza de la astronomía en el Brasil, después de 1973, organizada sobre la base del análisis de los discursos de los investigadores nacionales considerados referencias en este campo, y también en la lectura de las publicaciones en las áreas de Enseñanza de las Ciencias, Física y Astronomía. Este repaso histórico se desarrolló con el fin de facilitar la comprensión de los contextos en los que los investigadores entrevistados se han desarrollado profesionalmente. Por otra parte, se intentó recuperar la memoria del creciente campo de la investigación en Educación en Astronomía en el país. Creemos que el relato presentado puede contribuir a quien trata de comprender el pasado, en un intento de resolver las demandas actuales y futuras. Relata-se neste artigo uma retrospectiva histórica referente a dados provenientes de pesquisa em Educação em Astronomia no país, pós 1973, organizada com base na análise das falas de pesquisadores considerados referências nacionais nesse campo, como também na leitura de publicações das áreas de ensino de Ciências, F

  14. Diferentes Metodologias Aplicadas ao Ensino de Astronomia

    NASA Astrophysics Data System (ADS)

    Albrecht, E.; Voelzke, M. R.

    2007-08-01

    Espera-se que o educando ao final da educação básica, adquira uma compreensão atualizada das hipóteses, modelos e formas de investigação sobre a origem e evolução do Universo em que vive. O presente trabalho tem como principal objetivo compreender dentre três práticas pedagógicas adotadas no Ensino de Astronomia, na terceira série do Ensino Médio, da Escola Estadual Colônia dos Pescadores, qual melhor cumpre o papel de formação e aprendizagem para vida. A pesquisa preliminar foi através de um questionário onde o intuito foi diagnosticar o conhecimento já existente acerca do tema em questão. O questionário é composto de vinte questões dissertativas e objetivas, onde os educandos das três turmas envolvidas o responderam. Este trabalho utiliza as seguintes metodologias: a tradicional, onde o professor é um repassador de informações, fazendo uso exclusivo de lousa e giz; a segunda também de forma tradicional, porém com auxílio de multimídia para desenvolvimento das aulas e aterceira sob forma de seminários, elaborados e apresentados pelos educandos, no qual o educador faz apenas as intervenções necessárias. Ao final do trabalho os alunos responderão novamente o questionário inicial para diagnosticar dentre as três metodologias utilizadas qual apresentou melhor resultado. Os resultados preliminares obtidos, já podem ser observados e, dos 119 alunos entrevistados, as respostas obtidas são as mais diversas e evidenciam que a grande maioria nunca teve em sua vida escolar o tema Astronomia. Ao serem questionados se já haviam estudado Astronomia as respostas foram: turma A: sim 43%; turma B: sim: 21%; turma C: sim: 24%. Porém quando questionados a respeito do significado de Astronomia observou-se que: turma A: 100% de acertos; turma B: 64% acertos; turma C: 84% de acertos, demonstrando claramente a aprendizagem em diferentes esferas, não dependendo unicamente da escola. Até o presente momento, verificou-se que há interesse em

  15. On Ensino de Astronomia nas Cidades de Ribeirão Pires e Rio Grande da Serra

    NASA Astrophysics Data System (ADS)

    Faria, R. Z.; Voelzke, M. R.

    2007-08-01

    Apesar da astronomia ser um dos temas indicados pelos Parâmetros Curriculares Nacionais, observa-se que poucas mudanças ocorreram desde a implementação do mesmo em sala de aula. A presente pesquisa diz respeito sobre como os tópicos de astronomia estão sendo abordados pelos professores no ensino médio. Optou-se por aplicar um questionário com os professores que ministram a disciplina de física. Os mesmos trabalham em escolas estaduais situadas nas cidades de Ribeirão Pires e Rio Grande da Serra, ambas subordinadas a Diretoria de Ensino de Mauá, no Estado de São Paulo. O questionário foi aplicado durante o 2° semestre de 2006. Até o momento os resultados são preliminares. Dos 82,0% dos professores que responderam ao questionário no município de Rio Grande da Serra, 66,7% não aplicaram nenhum tópico de astronomia, 77,8% não utilizaram qualquer tipo de programa computacional, 66,7% não utilizaram laboratório, que 77,8% nunca levaram os alunos a museus e ou planetários e que 66,7% não indicaram qualquer tipo de revista ou livro sobre astronomia aos seus alunos. No município de Ribeirão Pires, 53,3% dos professores responderam ao questionário, destes 75,0% não aplicaram nenhum tópico de astronomia, 93,8% não utilizaram qualquer tipo de programa computacional, 75,0% não utilizaram laboratório, 81,3% nunca levaram os alunos a museus e ou planetário e 56,3% não indicaram qualquer tipo de revista ou livro sobre astronomia ao seus alunos. Apesar da maioria dos professores reconhecerem que o conteúdo de astronomia influi na formação do jovem, os mesmos não incluem o tema em seus planejamentos escolares.

  16. Projeto educação em ciências com observatórios virtuais: a participação da Escola Moppe no período 2000-2003

    NASA Astrophysics Data System (ADS)

    Wuensche, C. A.; Gavioli, E.; Oliveira, A. L. P. R. S.; da Silva, C.; Cardoso, H. P.; Estácio, S.

    2003-08-01

    O projeto Educação em Ciências com Observatórios Virtuais foi concebido pelo Instituto Astronômico e Geofísico da USP, agregando diversas instituições de ensino e pesquisa no país para desenvolver competências diversas na educação fundamental, média e superior utilizando a astronomia como ferramenta multidisciplinar. Este trabalho descreve a participação da MOPPE, escola-piloto do INPE no projeto, no período de 2000-2003. Serão apresentadas 1) a criação de um clube de ciências (1999 a 2001) cujo tema foi a colonização de Marte e 2) a ementa de astronomia trabalhada com as 7a. e 8a. séries do ensino fundamental. A proposta do projeto Colonizando Marte foi estudar diversos aspectos de uma missão interplanetária e construir experiementos que permitissem quantificar esses aspectos. Os resultados obtidos incluiram apresentações nas SBPC Jovem em 2000 e 2001. Discutiremos também as ementas de astronomia trabalhadas desde 2001 e o envolvimento dos alunos com atividades ligadas a astronomia, fora da aula de ciências. A inclusão de astronomia no currículo das últimas séries motivou a participação de mais alunos culminando com a conquista de duas medalhas para alunos da 7a. série na Olimpiada Brasileira de Astronomia em 2002. Houve também um aumento no número de participantes na OBA 2003 e nos projetos de astronomia mais elaborados nas Feira de Ciências de 2001 e 2002. Destacamos em 2003 a inclusão da MOPPE no projeto TIE - Telescopes in Education - da NASA, que utiliza o telescópio do Observatório de Mount Wilson (EUA) para observações remotas em projetos pedagógicos para o ensino de astronomia.

  17. [ANDALIES project: consumption, offer and promotion of healthy eating habits within secondary schools in Andalusia].

    PubMed

    González Rodríguez, Angustias; García Padilla, Francisca M; Martos Cerezuela, Ildefonso; Silvano Arranz, Agustina; Fernández Lao, Isabel

    2015-04-01

    Introducción. El contexto escolar destaca como uno de los factores influyentes en las prácticas alimentarias de los-las adolescentes. Las prácticas de consumo alimentario durante la jornada escolar, la oferta de las cafeterías y las actividades de promoción propuestas desde los centros son objetos de atención creciente para la salud comunitaria. Objetivos. Describir las prácticas alimentarias del alumnado durante la jornada escolar; conocer la oferta de las cafeterías escolares y establecimientos periféricos; y valorar si los centros de secundaria son entornos favorecedores de una alimentación saludable. Diseño y muestra. Estudio descriptivo transversal durante los cursos 2010-2012. Unidades de muestreo: centros de secundaria públicos (95) y alumnado (8.068). Muestreo polietápico por conglomerados: selección aleatoria y estratificada por provincia y tamaño de hábitat. Elección del alumnado: muestreo sistemático de aulas. Resultados. El 77,5% del alumnado desayuna en casa: lácteo con cereal (40,9%) o ingesta líquida (29,2%); el 70,3% come algo en el centro y eligen el bocadillo de embutidos mayoritariamente. La fruta, anecdótica (2,5%) y, el zumo comercial, my frecuente (63,3%). El 75% consume chucherías siendo significativamente superior en centros con cafeterías. Las cafeterías ofertan multitud de productos desaconsejados: refrescos (97,3%), embutidos (91,8%), golosinas y fritos envasados (89%). Ausencia de control de la oferta en los centros (68,42%); solo el 28,4% de directivos conocen la ley que la regula. El 72,5% de los centros realiza promoción de la alimentación con rasgos de efemérides. El 71,5% de los centros tienen en sus alrededores comercios que abastecen al alumnado. Discusión. Encontramos una baja protección de la salud alimentaria del alumnado debido a: déficits alimentarios del alumnado; baja calidad de la oferta en cafeterías escolares y locales externos e inexistencia de actividades de promoción en los centros

  18. Simulação de ejeções de massa coronal

    NASA Astrophysics Data System (ADS)

    Corsini, M. A.; Silva, A. V. R.

    2003-08-01

    Ejeções de massa coronal (EMC) são bolhas gigantes de gás permeadas por campos magnéticos que são ejetadas do Sol durante um período de várias horas. Caso estas ejeções atinjam a Terra, geralmente, causam uma série de distúrbios às comunicações de longa distância e navegação, além de danos a satélites e transformadores. Portanto, é desejável que sejamos capazes de prever quando estas ejeções atingirão a Terra. Para tanto, é necessário um bom entendimento dos mecanismos causadores das ejeções e, principalmente, de como se dá a propagação das EMC e sua interação com o vento solar que permeia o meio interplanetário. Nesse sentido foi desenvolvido um programa computacional para resolver as equações MHD (Magneto-Hidro-Dinâmica) que regem a evolução das EMC. Primeiramente foram estabelecidas as condições necessárias para descrever o vento solar, no estado estacionário, que permeia todo o meio interplanetário. Num primeiro momento, resolveu-se o sistema de equações para o caso do vento isotérmico, conhecida como a solução de Parker, a fim de testarmos o modelo. Então, foi considerado o caso do vento solar com temperatura variável no meio interplanetário. Este resultado foi utilizado como a base de nosso sistema em seu instante inicial. Posteriormente foram feitas as considerações necessárias para descrever a propagação da Ejeção de Massa Coronal. As EMC foram simuladas como um aumento de densidade e temperatura local na coroa solar. A órbita e a posição da Terra foram incluídas no sistema. Os dados gerados possibilitaram uma análise da evolução da EMC pelo meio interplanetário até encontrar-se com a Terra. Os perfis de densidade e temperatura a 1 Unidade Astronômica são comparados com os dados de satélites reportados na literatura.

  19. Mapa Geologico de Venezuela a Escala 1:750,000

    USGS Publications Warehouse

    Hackley, Paul C.; Urbani, Franco; Karlsen, Alex W.; Garrity, Christopher P.

    2006-01-01

    geologicos de Guayana tienen como base topografica las imagenes de radar de vision lateral (SLAR), con muy control de campo de los a?os 1970's. La correccion de estos desfases esta planificada para el futuro.

  20. Selection of Protease Inhibitors to Prevent or Attenuate Inflammatory Processes

    DTIC Science & Technology

    2007-08-01

    activation of phospholipase CO3 and to the production of inositol 1,4,5-triphosphate, with consequent increase of intracellular calcium concentration [ Campos ...selective kinin BI-receptor antagonists would not produce undesirable side effects [ Campos et al., 2006]. The constitutive expression of B2-receptors on...infection [ Campos et al., 2006]. In a study done by Monteiro et al. (2006) an infection model (mouse model of subcutaneous infection by Trypanosoma cruzi

  1. Detecting Potential Insider Threats Through Email Datamining

    DTIC Science & Technology

    2006-03-01

    0.0007390000 campo 0.0015010000 duff 0.0007000000 divis 0.0014980000 sky 0.0006990000 mous 0.0014350000 deni 0.0006730000 merchant 0.0013850000 mesa...0.015035 10 486 anthony.campos@enron.com................ Anthony Campos ...... 0.014382 168 10 1101... Vargas ........ 0.000530206305260 289 27 44142 ron.beidelman@enron.com................. .................... 0.000522829926453

  2. Anatomy of a Hostage Rescue: What Makes Hostage Rescue Operations Successful?

    DTIC Science & Technology

    2004-09-01

    Victor Polay Campos , the MRTA’s founder and current leader, is captured for the first time and placed in the Canto Grande state prison in Lima. On...9 July of 1990, 47 MRTA members, including Victor Polay Campos , escape the Canto Grande penitentiary through a 332-meter underground tunnel built by...Uribe Tasayco. This same year, Victor Polay Campos and some of his most important lieutenants are recaptured at a Chinese restaurant in Lima

  3. Cost Estimate for Gun Liner Emplacement

    DTIC Science & Technology

    2011-08-01

    Investigations of Explosively-Bonded Gun Tube Liners; ARDEC Technical Report RDAR-WSB-TR-09016; September 2009. 3. Miller, Mark D.; Campo , Frank. Chromium...Watervliet, NY, July 2010. 4. Miller, Mark D.; Campo , Frank; de Rosset, William S. Explosive Bonding of Refractory Metal Liners. in Proceedings of... Campo , Frank; Todaro, Mark; Hydrew, Josh; de Rosset, William S. Ballistic Tests of Explosively-Bonded Gun Tube Liner; ARDEC/Benét Laboratories

  4. An Analysis of the Performance of the Fans of a Wind Tunnel at the Naval Postgraduate School.

    DTIC Science & Technology

    1985-12-01

    raduate School Monterey, alifornia 93943 5. Centro Tecnico Aeroespacial 1 Rua Paraibuna S/N 12225 Sao Jose dos Campos-SP Sao Paulo, BRAZIL 6. Centro...Tecnico Aeroespacial 2 Instituto de Atividades Espaciais Rua Paraibuna S/N 12225 Sao Jose dos Campos, SP Sao Paulo, BRAZIL 7. Centro Tecnico... Aeroespacial 2 Instituto de Atividades Espaciais Divisao de Sistemas Belicos Rua Paraibuna S/N 12225 Sao Jose dos Campos, SP Sao Paulo, BRAZIL 8. Lt.Col. Marcos

  5. Studying the Jovian System with small telescopes

    NASA Astrophysics Data System (ADS)

    Sanchez-Lavega, Agustin; del Rio Gaztelurrutia, T.; Hueso, R.

    2013-10-01

    We describe a learning activity performed at the Aula Espazio Gela UPV/EHU in which students of the Master of Space Science and Technology study the Jovian System (Jupiter and satellites) and deduce some of its parameters using their own images obtained with telescopes ranging from 11 to 20 inch in diameter by means of the lucky-imaging technique.

  6. Who Stays, Who Leaves? Attrition among First-Term Enlistees

    DTIC Science & Technology

    1989-05-01

    helped them select the occupation of their choice and a convenient entry data. Because so many enlistees enter through DEP- virtually all seniors-it is...perhaps not surprising that DEP participation alone has no significant correlation with attrition. Still, Baldwin and I) aula found that DEP participation

  7. Language Programs at Villababel High: Rethinking Ideologies of Social Inclusion

    ERIC Educational Resources Information Center

    Mijares, Laura; Relano Pastor, Ana M.

    2011-01-01

    This article explores language ideologies underlying two language programs implemented in one secondary school in Madrid (Spain). The Spanish for newcomers immersion program ("Aula de Enlace") is aimed at immigrant origin students who do not know or have a poor command of Spanish; and the Spanish-English bilingual program targets…

  8. US EPA, Pesticide Product Label, , 03/20/1975

    EPA Pesticide Factsheets

    2011-04-21

    ... AUHI1a .. .i4 S ~"aula~ Lt;i Spot. ... oecu4. Po ~ct 4rci~ ~~£, tat~~~ ccnd~tic~~ ~av~~ d~{~t !\\r~ 4~~a) :,cat~d. 0: ~ct eO'lt~~i~ar~ ~al~' bu ...

  9. Improved Objective Measurements for Speech Quality Testing

    DTIC Science & Technology

    1985-01-01

    In this regard, it may be possible to ucvelop objective measures tuned to some general distortion character[. tics (e.g. waveform coders, pitch excited...parameter III specifies thce threshold between objectively interrupted and non-interrupted speech. In the foi- aula apecifying RATIO, mf is the index of the

  10. Large-Scale Operations Management Test of Use of the White Amur for Control of Problem Aquatic Plants. Selected Life History Information of Animal Species on Lake Conway, Florida.

    DTIC Science & Technology

    1982-08-01

    Name Scientific Name FishSpecies 1 Longnose gar Loplsosteus osseus 2 Florida gar Lepisosteus platjrhincus 3 Bowf in Aula calva 4 American eel Anguilla...where vegeta- tion is present. Characteris- tic of quiet water habitats; rare to streams with noticeable current. Tolerant of moderate turbidity, but

  11. Radar Data Processing Using a Distributed Computational System

    DTIC Science & Technology

    1992-06-01

    SECURITY CLASSIFICATION UNCLASSIFIEO/UNIMITED 3SAME AS REPORT Q TIC USERS UNCLASSIFIED 22a. NAME OF RESPONSIBLE INDIVIDUAL 22b. TELEPHONE (Include Area... Aula - Automaq&o de Sistemas Navais, s/ data. (101 Averbuch A., Itzikcwitz S., and Kapon T. "Parallel Implementation of Multiple Model Tracking

  12. A Review of Selected Elements of the FY73 Programs on Test and Evaluation of Aircraft Survivability (TEAS). Volume 2. Appendix A: bibliography for Vulnerability and Survivability of Military Aircraft,

    DTIC Science & Technology

    1973-07-31

    17 S 1967 NASC-CREW SYSTEMS ’IV. Battle Damage und Casualty Information for Navy Air Operations In Southeast Aula 386,374L S 196...Fxpirlmental Aircraft Passive Ot f eiise Artnur System 891957L U 1970 AFATI. IK-70-112, BOOK I, II 891958L Bui 11. tic Impact Mechanics

  13. National Program for Inspection of Non-Federal Dams. Plymouth Reservoir Dam (CT 00286), Naugatuck River Basin, Plymouth, Connecticut. Phase I Inspection Report.

    DTIC Science & Technology

    1981-05-01

    NOTE LACK OF RIPRAP ABOVE WATER LEVEL. US ARMY ENGINEER DIV NEW ENGLAND PLY MOLITH I L’ I V1 )% CORPS OF ENGINEERS NATIONAL PROGRAM OF TRI .--- T H AULA ...HAESTAD, INC. SHEET tiC ;............ CONSULTING L.NI.\\LE RS CKD) BY ... DATE . ’ 3~bok~cRa atru~ un(uo ............... D ND........ SUBJECT ........... S

  14. QUEST: An Assessment Tool for Web-Based Learning.

    ERIC Educational Resources Information Center

    Choren, Ricardo; Blois, Marcelo; Fuks, Hugo

    In 1997, the Software Engineering Laboratory at Pontifical Catholic University of Rio de Janeiro (Brazil) implemented the first version of AulaNet (TM) a World Wide Web-based educational environment. Some of the teaching staff will use this environment in 1998 to offer regular term disciplines through the Web. This paper introduces Quest, a tool…

  15. Método numérico das diferenças finitas no domínio do tempo aplicado a ondas Alfvén em plasma astrofísico

    NASA Astrophysics Data System (ADS)

    Dos Santos, L. C.; Kintopp, J. A.; Jatenco-Pereira, V.; Opher, R.

    2003-08-01

    Ondas Alfvén em plasma astrofísico têm sido objeto de intenso estudo nas últimas décadas pelo fato de apresentarem papel importante em muitas áreas de pesquisa na astrofísica. Particularmente são importantes no mecanismo de aquecimento da coroa solar; em ventos estelares; em jatos galácticos e extragalácticos; em discos protoestelares, etc. A formulação para diferenças finitas no domínio do tempo (FDTD), aplicada a plasma magnetizado é desenvolvida para estudo das propriedades de ondas Alfvén em três dimensões (3D-FDTD). O método é aplicado inicialmente a um plasma homogêneo e isotérmico imerso em uma região com campo magnético externo B0, que sofre uma pequena perturbação. Uma vez gerada a onda, esta perturbação é retirada e, então analisamos a evolução temporal das ondas, bem como a forma de seu amortecimento.

  16. Movimiento regular y caótico en cúmulos globulares

    NASA Astrophysics Data System (ADS)

    Carpintero, D. D.; Muzzio, J. C.; Wachlin, F. C.

    Los cúmulos globulares exhiben diferentes grados de elipticidad y se mueven en el campo gravitatorio de la galaxia a la que pertenecen. Las órbitas de sus estrellas no necesitan, por ello, conservar la energía ni el momento angular, y resulta probable la presencia de movimientos caóticos. Como paso preliminar de una investigación más extensa, presentamos aquí los resultados de un estudio de órbitas estelares en un cúmulo globular levemente triaxial que describe una órbita circular dentro de una galaxia. Las órbitas se investigan utilizando dos métodos: 1) La clasificación por frecuencias de D.D. Carpintero y L.A. Aguilar (1998, MNRAS, en prensa), y 2) Los exponentes de Lyapunov (subrutina LIAMAG, gentilmente suministrada por D. Pfenniger). Utilizando diversos espacios de condiciones iniciales, investigamos las familias de órbitas de las estrellas del cúmulo. Confirmamos la presencia de órbitas caóticas, particularmente en las zonas externas del cúmulo, y discutimos su importancia para la estructura del cúmulo.

  17. Un modelo general de eyección de materia estelar

    NASA Astrophysics Data System (ADS)

    Rotstein, N. O.

    Posiblemente, la más directa y dramática evidencia de la pérdida de masa por parte de diferentes objetos astrofísicos la constituye el fenómeno de eyección persistente de materia. En el caso particular de las estrellas, las características y los mecanismos que impulsan a sus atmósferas externas hacia el medio interestelar varían a lo largo del diagrama evolutivo. En parte por este motivo, en parte por las dificultades matemáticas involucradas, es muy difícil elaborar un modelo que pueda dar cuenta de los diferentes mecanismos que originan e impulsan el viento estelar. Cabe entonces preguntarse si es posible desarrollar un único modelo en el que estos mecanismos puedan ser considerados (y variados) como parámetros externos que responden a las características de cada región de la secuencia evolutiva. La respuesta es que, en función de la geometría del campo electromagnético involucrado, todo depende de la simetría del problema. En este trabajo se presenta el análisis detallado de una de tales simetrías, discutiendo en particular los resultados obtenidos a la luz de las observaciones disponibles.

  18. [Glucagon-like peptide-1 (GLP-1) mimetics: a new treatment for Alzheimer's disease?].

    PubMed

    García-Casares, Natalia; García-Arnés, Juan Antonio; Gómez-Huelgas, Ricardo; Valdivielso-Felices, Pedro; García-Arias, Carlota; González-Santos, Pedro

    2014-12-01

    Introduccion. Los analogos del glucagon-like peptide-1 (GLP-1) son una opcion terapeutica establecida en los pacientes con diabetes tipo 2. Sin embargo, las propiedades de los analogos del GLP-1 van mas alla del control estrictamente metabolico del paciente diabetico. Los efectos neuroprotectores de los analogos del GLP-1 se han puesto de manifiesto en estudios recientes y han abierto nuevos campos de investigacion en trastornos neurodegenerativos como la enfermedad de Alzheimer (EA), entre otros. Objetivo. Revision sistematica de los estudios experimentales y ensayos clinicos en humanos que demuestran las propiedades neuroprotectoras de los analogos del GLP-1 en la EA. Desarrollo. Los estudios experimentales que se han llevado a cabo en modelos de roedores con EA demuestran las propiedades neuroprotectoras de los analogos del GLP-1 sobre el sistema nervioso central que reducen las placas de beta-amiloide, el estres oxidativo y la respuesta inflamatoria cerebral. Recientemente se han puesto en marcha estudios con analogos del GLP-1 en humanos con deterioro cognitivo y EA. Conclusiones. Los analogos del GLP-1 presentan propiedades neuroprotectoras. Al considerarse la diabetes tipo 2 un factor de riesgo para el deterioro cognitivo y la demencia, deben considerarse los beneficios de los analogos del GLP-1 sobre la cognicion. Del mismo modo, los analogos del GLP-1 suponen un tratamiento prometedor en la EA.

  19. Contribuições para o projeto da câmara infravermelha Spartan do telescópio SOAR

    NASA Astrophysics Data System (ADS)

    Laporte, R.; Jablonski, F.; Loh, E.

    2003-08-01

    Como parte de uma colaboração entre a Divisão de Astrofísica do INPE, IAG-USP, Instituto do Milênio MEGALIT e a Michigan State University, trabalhamos durante um ano junto ao grupo do Dr. Edwin Loh (MSU) no projeto e detalhamento de diversos subsistemas para a câmara infravermelho Spartan do telescópio SOAR. Trata-se de um imageador para as bandas J, H e K que explora todo o potencial, em termos de qualidade de imagem e campo de visada, fornecido pelo sistema de óptica adaptativa de primeira ordem do telescópio SOAR. Projetamos soluções detalhadas para os subsistemas de rodas de filtros/grismas/máscaras de Lyot; subsistema de compactação do mosaico de detectores em duas versões distintas; subsistema de alimentação de Nitrogênio líquido. Mantivemos sempre uma supervisão geral sobre todas as partes restantes e os respectivos envelopes volumétricos produzindo soluções para a integração de todos os componentes. Neste trabalho, ilustramos as principais contribuições e fornecemos um resumo do estado atual do instrumento.

  20. Autoguía para el telescopio 2,15 mts de CASLEO

    NASA Astrophysics Data System (ADS)

    Aballay, J. A.; Casagrande, A. R.; Pereyra, P. F.; Marún, A. H.

    Se está desarrollando un sistema de autoguía para el telescopio de 2,15 mts. El mismo se realizará aprovechando el Offset Guider. Al ocular móvil de éste se vinculará alguna cámara digital (ST4-ST7-CH250) para lograr la visión del objeto. El funcionamiento del equipo será el siguiente: primero, dadas las coordenadas del objeto a observar, se tomarán las coordenadas del telescopio para que, a través de una base de datos, se determine un campo de objetos que sirvan para la cámara de visión, luego, la PC obtendrá el offset entre la estrella de observación y la estrella seleccionada como guía, este valor será trasladado a los motores que posicionarán en forma automática el ocular. Una vez que la estrella es visualizada en la cámara (monitor de PC ) se correrá el programa que guiará el telescopio automáticamente.

  1. [The essence of essential tremor: neurochemical bases].

    PubMed

    Gironell, A; Marin-Lahoz, J

    2016-06-01

    Introduccion. El temblor esencial es el trastorno del movimiento mas frecuente en el adulto. Se ha considerado una enfermedad benigna, pero puede ocasionar una importante discapacidad fisica y psicosocial. El tratamiento farmacologico sigue siendo poco satisfactorio. Su etiologia, fisiopatologia y anatomia siguen sin conocerse del todo. Objetivo. El conocimiento de las bases neuroquimicas es fundamental para el desarrollo de terapias mas eficaces. Se revisan los conocimientos actuales en este campo a fin de incentivar nuevas investigaciones e ideas que permitan mejorar la comprension de la enfermedad y que fomenten el desarrollo de nuevas terapias farmacologicas. Desarrollo. Se revisan los trabajos realizados hasta la fecha en humanos y en modelos animales de neurotransmisores (acido gamma-aminobutirico, glutamato, noradrenalina, serotonina, adenosina), proteinas y otros fenomenos neuroquimicos, como los canales de calcio de tipo T en el temblor esencial. Conclusiones. Se han descrito cuatro disfunciones neuroquimicas que acontecerian basicamente en el cerebelo y el nucleo olivar inferior: alteracion del sistema gabergico, aumento del rebote postinhibitorio mediante corrientes de calcio de tipo T, disminucion de los mecanismos de inhibicion neuronal y aumento de la actividad de los neurotransmisores excitatorios. Estas disfunciones neuroquimicas comportarian un aumento de la actividad de las neuronas profundas cerebelosas con actividad oscilatoria, que se trasladaria al nucleo del talamo y a la corteza motora, y comportarian la aparicion del temblor. Son necesarios nuevos estudios para poder confirmar estas hipotesis y seguir avanzando para conseguir tratamientos farmacologicos mas eficaces para los pacientes con temblor esencial.

  2. Comparison of longevity between a laboratory strain and a natural population of Anastrepha Fraterculus (Diptera: Tephritidae) under field cage conditions

    SciTech Connect

    Gomez Cendra, P.; Vilardi, J.; Segura, D.; Cladera, J.; Allinghi, A.

    2007-03-15

    The South American fruit fly Anastrepha fraterculus (Wiedemann) is one of the most destructive fruit pests in this region, infesting major fruit crops. Implementation of the sterile insect technique (SIT) as part of an area-wide integrated approach against this species requires information on the survival of mass-reared and sterilized insects in the field and their ability to mate with wild females. The survival rates in field cages of both non-irradiated and irradiated laboratory flies were compared with that of wild flies. Both types of laboratory flies survived longer than their wild counterparts over the 8 days under the experimental conditions. The irradiation dose (70 Gy) did not affect survival of the laboratory reared flies. Our results improve the prospect of integrating the SIT into the control of A. fraterculus populations in Argentina. (author) [Spanish] Anastrepha fraterculus (Wiedemann), la mosca sudamericana de la fruta, es una de las plagas mas destructivas en la region que infesta a los principales cultivos de frutas. La implementacion de la Tecnica del Insecto Esteril (TIE) como parte de un manejo integrado en areas extensivas contra esta especie requiere ensayos que demuestren que los insectos producidos en forma masiva y esterilizados son capaces de sobrevivir en el campo y aparearse con las hembras silvestres. Se comparo la supervivencia de individuos de una linea de laboratorio, tanto irradiados como no irradiados con la de individuos de una poblacion natural. Los dos tratamientos de moscas de laboratorio sobrevivieron mas tiempo que las salvajes durante los 8 dias y en las condiciones ensayadas. La dosis de radiacion (70 Gy.) no afecto la supervivencia de las moscas criadas en laboratorio. Nuestros resultados mejoran las perspectivas de integrar la TIE en el control de las poblaciones argentinas de A. fraterculus. (author)

  3. [Spanish neuroscience in times of Don Quixote].

    PubMed

    Martín-Araguz, Antonio; Mikola, Yvett; Almendral-Doncel, Raquel; Campos-Bueno, Javier

    2016-02-16

    Introduccion. Miguel de Cervantes Saavedra publico su inmortal obra Don Quijote de la Mancha en plena epoca de crisis y decadencia en la España de la transicion entre los siglos XVI y XVII. Objetivo. En 2016 se conmemora el cuarto centenario del fallecimiento de nuestro insigne literato, por cuyo motivo analizamos en este articulo el estado de la neurociencia hispana, tanto en el texto quijotesco como en la obra de los autores coetaneos mas relevantes. Desarrollo. A pesar de las peyorativas circunstancias historicas, en la epoca de la transicion del Renacimiento al Barroco se produjo en la Corona de Castilla un florecimiento de la literatura (Siglo de Oro español) y de otras artes hispanas (pintura, escultura, arquitectura y musica), asi como una prodigiosa creatividad en el campo de la neurociencia, incluida en la filosofia natural. El medico Gomez Pereira, en su libro Antoniana Margarita, se adelanto en decadas a las bases del mecanicismo cerebral y del concepto de reflejo condicionado. El boticario Miguel Sabuco, en su texto Nueva filosofia, anticipo en siglos el concepto de neurotransmision. El medico Juan Huarte de San Juan fue el fundador de la neuropsicologia y la psicologia experimental; su texto Examen de ingenios ha sido uno de los textos cientificos mas influyentes y traducidos de todos los tiempos; sus conceptos quedan patentemente reflejados en el texto cervantino. Conclusion. Este analisis de la obra cervantina dentro del entorno cultural de la obra pretende ser un homenaje a la inmortal figura de nuestro 'Principe de los ingenios' en el cuarto centenario de su fallecimiento.

  4. [Bibliometric analysis of Revista Médica del IMSS in the Scopus database for the period between 2005-2013].

    PubMed

    García-Gómez, Francisco; Ramírez-Méndez, Fernando

    2015-01-01

    Objetivo: analizar la visibilidad de la Revista Médica del Instituto Mexicano del Seguro Social (Rev Med Inst Mex Seguro Soc) en la base de datos Scopus y describir los principales indicadores bibliométricos cuantitativos de la producción científica publicados durante el periodo 2005-2013. Métodos: para el análisis se utilizó la base de datos Scopus y se limitó el periodo de búsqueda a los años 2005-2013. La estrategia de búsqueda se ejecutó en los campos específicos de Título de la Publicación (Source Title) con el término Revista Médica del Instituto Mexicano del Seguro Social y sus posibles variantes, asícomo el número ISSN de la revista. Para el análisis de los datos obtenidos se utilizaron las herramientas de Scopus y los programas Excel y Access. Resultados: se encontraron 864 trabajos publicados durante el periodo 2005-2013 que fueron incluidos en Scopus. Se identificaron los autores con mayor producción científica y mayor número de citas acumuladas a sus trabajos, asícomo las principales revistas que citan a la Rev Med Inst Mex Seguro Soc. Se describen las principales áreas temáticas, tipos de documentos y otros indicadores bibliométricos que caracterizan a la publicación. Conclusiones: el uso de Scopus brinda la posibilidad de analizar con una herramienta externa al IMSS la visibilidad de la producción científica publicada en la Revista Médica del IMSS, además de que contribuye a identificar el estado de la ciencia en México y de los países en vías desarrollo.

  5. The Illness Experience: Palliative Care Given the impossibility of Healing.

    PubMed

    Dantas, Margarida Maria Florêncio; Amazonas, Maria Cristina Lopes de Almeida

    2016-06-01

    This paper presents a reflection about being terminally ill and the various ways that the subject has at its disposal to deal with this event. The objective is to understand the experience of palliation for patients undergoing no therapeutic possibilities of cure. The methodology of this study has the instruments to semi-structured interview, the participant observation and the field diary, and the Descriptive Analysis of Foucault's inspiration how the narratives of the subjects were perceived. The Results of paper there was the possibility of looking at the experience of illness through the eyes of a subject position assumed by the very sick. As conclusion we have than when choosing palliative care, the terminally ill opts for a way to feel more comfortable and resists the impositions of the medical model of prolonging life. O presente trabalho traz uma reflexão a respeito do ser um doente terminal e das várias maneiras que o sujeito tem a seu dispor para lidar com esse acontecimento. Nosso objetivo foi compreender a experiência da paliação por sujeitos doentes sem possibilidades terapêuticas de cura. A metodologia deste estudo teve como instrumentos a Entrevista Narrativa, a Observação Participante e o Diário de Campo, sendo a Análise Descritiva de inspiração foucaultiana o modo como as narrativas dos sujeitos foram percebidas. O resultado do estudo mostrou a possibilidade de olhar a experiência do adoecer através da ótica de uma posição de sujeito assumida pelo próprio enfermo. E concluímos que ao escolher os cuidados paliativos, o doente terminal opta por um modo de se sentir mais confortável e resiste às imposições do modelo médico de prolongamento da vida.

  6. [Prehospital emergency care injuries from external causes in a region of Venezuela].

    PubMed

    Herrera, Rafael; Bastidas, Daniel; Arteaga, Everilda; Bastidas, Gilberto

    2017-01-01

    Introducción: a nivel mundial, anualmente mueren aproximadamente 3 500 000 personas como consecuencia de lesiones debidas a causas externas, lo que representa para Venezuela la tercera causa de morbilidad general. Sin embargo, no existen registros en el país de los aspectos que definen la atención de emergencia prehospitalaria como herramienta para afrontar este problema socio-sanitario, objeto de la presente investigación. Métodos: estudio descriptivo, transversal y de campo con base en la información registrada diariamente durante un año en emergencia prehospitalaria. Resultados: fueron en total 1493 los lesionados por causas externas, con edad promedio de 29.5 ± 12 años, 84.5% del género masculino. Las lesiones fueron, en su mayoría, de severidad menor-moderada (69.4%), debidas a accidentes de transporte terrestre (70.9%), ocurridos de día (75.9%), entre lunes y viernes (72.9%), atendidos en 20 minutos o menos, y trasladados en el 97.3% de los casos. Conclusiones: los hombres jóvenes, económicamente productivos, de las zonas con mayor densidad poblacional y urbanismos son los más afectados por lesiones por causas externas; en ambos géneros, los accidentes de transporte terrestre son las causas más frecuente de lesión, de severidad menor-moderada; asimismo, la atención de emergencia prehospitalaria puede considerarse adecuada.

  7. Estudio de la fotoabsorción y fotoionización de la molécula de alta relevancia atmosférica no a través de los estados Rydberg con la metodología MQDO

    NASA Astrophysics Data System (ADS)

    Bustos, E.; Velasco, A. M.; Martín, I.; Lavín, C.

    Los procesos de fotoionización son de una importancia fundamental [1] y encuentran aplicación en un gran número de contextos científicos: Astrofísica [2], química de las radiaciones, biología. Los investigadores de dichos campos, necesitan de valores de fiables de secciones eficaces para la fotoionización parcial, la Fotoabsorción, así como para los procesos de fotofragmentación en amplios intervalos espectrales, particularmente en estudios de modelización [3-5]. En este trabajo se ha centrado la atención sobre el oxido nítrico, que se ha considerado apropiado y relevante por varios motivos: por el trascendental papel que representa en la física y química de la alta atmosfera [6], aparte de por estar íntimamente relacionado con los problemas de contaminación. Los procesos de recombinación disociativa [7] del NO, donde los estados Rydberg se encuentran directamente implicados, son relevantes, por ejemplo, en las regiones E y F de la ionosfera [7]. En este trabajo se estudia la fotoionización del NO desde el estado fundamental con la versión molecular del método del orbital de defecto cuántico (MQDO). Para ello se calcula el diferencial de las fuerzas de oscilador parciales que constituyen los canales de fotoionización del NO desde el estado fundamental. La continuidad del diferencial de fuerza de oscilador calculada a través del umbral de fotoionización, esto es, en las regiones del espectro discreta y del continua, se adopta como criterio de calidad la escasez de datos comparativos [8].

  8. [Oxytocin in the treatment of the social deficits associated to autism spectrum disorders].

    PubMed

    Cachafeiro-Espino, Carla; Vale-Martínez, Anna M

    2015-11-01

    Introduccion. La implicacion de la oxitocina en la conducta social de animales y humanos ha llevado a estudiar los efectos de su administracion en el comportamiento y cognicion social de pacientes con trastornos del espectro autista (TEA). Objetivos. Revisar la investigacion sobre el potencial terapeutico de la oxitocina en el tratamiento de los deficits sociales de la poblacion con TEA y discutir las probables direcciones futuras de los estudios en este campo. Desarrollo. Diversos trabajos han relacionado la oxitocina con la fisiopatologia de los TEA. La mayoria de los estudios que han administrado oxitocina, generalmente por via intranasal (24 UI), ha observado mejoras significativas en el rendimiento social, sin detectar efectos secundarios destacables. No obstante, existen datos contradictorios debido a la heterogeneidad de las variables analizadas por los diferentes estudios, al uso de muestras heterogeneas y pequeñas o a la diferente duracion de los tratamientos. Las limitaciones relacionadas con la falta de comprension de los mecanismos de accion de la oxitocina y la diversidad sintomatologica de los TEA dificultan el establecimiento de este peptido como tratamiento de los pacientes autistas. Estudios recientes destacan la conveniencia de explorar el efecto de la combinacion del tratamiento de oxitocina con programas conductuales de intervencion en habilidades sociales, asi como la potenciacion de la secrecion endogena de oxitocina. Conclusiones. Los efectos de la administracion de oxitocina resultan prometedores en relacion con el tratamiento de los deficits sociales en individuos con TEA. Estudios futuros deberian facilitar la comprension de las vias de accion de la oxitocina y el establecimiento de pautas optimas de tratamiento.

  9. 19 CFR 101.4 - Entry and clearance of vessels at Customs stations.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    .... Petersburg Wrangell. California Campo Tecate. Otay Mesa San Diego. San Ysidro San Diego. Colorado Colorado... Trout River. Jamieson's Line Trout River. New Hampshire Pittsburg Beecher Falls, VT. Monticello...

  10. 19 CFR 101.4 - Entry and clearance of vessels at Customs stations.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    .... Petersburg Wrangell. California Campo Tecate. Otay Mesa San Diego. San Ysidro San Diego. Colorado Colorado... Trout River. Jamieson's Line Trout River. New Hampshire Pittsburg Beecher Falls, VT. Monticello...

  11. Analysis of astronomy knowledge of the students in the Federal Institute Sao Paulo

    NASA Astrophysics Data System (ADS)

    Moraes, A. C.; Voelzke, M. R.

    2014-08-01

    Este trabalho é parte integrante da pesquisa de mestrado acadêmico em ensino de ciências. Nele, busca-se apresentar os resultados da pesquisa realizada entre os 106 alunos do curso superior de tecnologia em automação industrial do Instituto Federal de Educação, Ciência e Tecnologia de São Paulo campus Cubatão, divididos em cinco turmas, duas no período matutino e três no período noturno. A análise dos resultados deste pré questionárioconstatou a falta de conhecimento básico dos discentes, sobre assuntos relacionados à astronomia, o que pode ser atribuído ao ineficiente processo de aprendizado pelo qual eles passaram tanto no ensino médio como no ensino fundamental, em escolas municipais, estaduais e particulares onde estudaram. No ensino de astronomia, têm-se diagnosticado constantemente diversas dificuldades conceituais tanto por parte de alunos como de professores de todas as áreas e níveis de ensino e poucos de fato a compreendem (ALBRECHT; VOELZKE, 2010). Demonstra-se as duas etapas concluídas do trabalho. A primeira etapa indica a análise dos conhecimentos prévios sobre conceitos astronômicos, através do questionário com 25 perguntas. A fim de corrigir as falhas constatadas, experimentalmente ministrou-se, externo ao conteúdo programático, um curso básico em astronomia, com diferentes estratégias de ensino, tais como, utilização de aulas expositivas dialogadas, recursos audiovisuais e palestras, para corrigir as dificuldades diagnosticadas. Essas estratégias de ensino se comprovaram adequadas às necessidades dos alunos e os conceitos foram finalmente compreendidos. Ao término do curso, completado o interstício de 120 dias, para caracterizar que houve a aprendizagem significativa, realizou-se uma nova pesquisa, quando, exatamente os mesmos 106 alunos responderam as mesmas 25 questões aplicadas na primeira etapa. Constata-se na segunda etapa, após análise, que em todas as questões, houve maior compreensão dos assuntos

  12. PFI-ZEKE (Pulsed Field Ionization-Zero Electron Kinetic Energy) para el estudio de iones

    NASA Astrophysics Data System (ADS)

    Castaño, F.; Fernández, J. A.; Basterretxea, A. Longarte. F.; Sánchez Rayo, M. N.; Martínez, R.

    descubierta, que va en contra de lo esperado en otros sistemas físicos y que consiste en que los altos estados Rydberg de átomos, moléculas y sus complejos de van der Waals (o de los iones) tienen tiempos de vida de centenas de μ s. En resumen, el experimento y la espectroscopía ZEKE consiste en excitar un átomo, molécula o cluster sucesivamente a dos estados excitados selectivos de manera que el final sea un estado Rydberg. A continuación se aplica un campo eléctrico variable que lo ioniza y después de un cierto retraso se aplica un campo eléctrico de extracción, tanto para el electrón como para el ión. El espectro de los iones, es un espectro ZEKE. Hay varias alternativas para hacer este último proceso. El estudio de la espectroscopía y propiedades de iones y sus clusters requiere el conocimiento detallado de la espectroscopía de la molécula neutra, los estados Rydberg, de los confórmeros y sus complejos. Todo ello implica el haber estudiado los sistemas por LIF, REMPI y doble resonancia (hole burning IR-UV, UV-UV). Además solo es posible interpretar los resultados y obtener la información contenida en los espectros con ayuda de cálculos cuánticos ab initio. Hasta el momento hemos aplicado tanto el ZEKE como el conjunto de técnicas mencionadas anteriormente, a varias molécula de interés químico general como anilina y sus derivados, así como sus complejos con agua y amoniaco. Sin embargo, el método es muy versátil y puede aplicarse a iones de átomos, iones múltiples, moléculas sencillas y sus clusters así como a sus semi-reacciones. Como ejemplo de uno de estos espectros PFI-ZEKE se presenta aquí el caso del amonibenzonitrilo, ABN y solamente en su estado fundamental. En la conferencia se presentarán espectros ZEKE del ABN y moléculas similares en estados vibracionales intermedios (islas de estabilidad), así como la determinación de potenciales de ionización precisos, energías de enlace de compuestos del ión con varios disolventes y

  13. Detecção da fase impulsiva de uma explosão solar gigante até 405 GHz

    NASA Astrophysics Data System (ADS)

    Raulin, J.-P.; Makhmutov, V.; Kaufmann, P.; Pacini, A. A.; Luethi, T.; Hudson, H. S.; Gary, D. E.; Yoshimori, M.

    2003-08-01

    A explosão ocorrida no dia 25/08/2001 foi uma das mais intensas do presente ciclo solar em ondas de rádio de altas frequências. Foram medidas em ondas milimétricas e submilimétricas, aproximadamente, 105 e vários milhares de unidades de fluxo solar, respectivamente. Apresentamos um estudo deste evento em múltiplas frequências, desde microondas (1GHz), até ondas submilimétricas (405 GHz) detectadas pelo Telescópio Solar para ondas Submilimétricas (SST). Esta base de dados foi complementada utilizando-se o experimento Yohkoh, incluindo a emissão em raios-X duros e raios-g (até 100 MeV), e imagens em raios-X moles da região ativa envolvida. Enfocamos e discutimos principalmente os seguintes aspectos da fase impulsiva do evento: (i) as implicações deduzidas do espectro eletromagnético, obtido pela primeira vez até 405 GHz; (ii) a dinâmica da região ativa. Os resultados mostram que para explicar o espectro rádio observado, são necessários entre 3.5×1037 e 1.5×1039 elétrons acelerados acima de 20 keV em uma região de campo magnético entre 300 e 800 Gauss. A estimativa do fluxo de fótons que seria produzido por estes elétrons, mostra que grande parte deles não precipitou na baixa atmosfera. A evolução temporal da emissão em raios-X moles revela que a configuração magnética da região ativa foi muito dinâmica durante a fase impulsiva da explosão. Em particular, mostramos que a produção dos elétrons altamente energéticos foi iniciada junto com a aparição, na baixa coroa solar, de um novo sistema compacto de estruturas magnéticas. Este fato sugere que os locais de aceleração estão localizados na baixa atmosfera do Sol, como resultado da interação entre o novo sistema compacto e o campo magnético ambiente da região ativa.

  14. Evolución Dinámica de Cúmulos Estelares Abiertos

    NASA Astrophysics Data System (ADS)

    de La Fuente Marcos, R.

    Las estrellas que observamos no se formaron aisladamente, sino que lo hicieron en grupos o cúmulos. Estos sistemas estelares recibenel nombre de cúmulos estelares abiertos o galácticos cuando están constituidos por estrellas de la Población I. Los cúmulos abiertos se localizan preferentemente en el plano galáctico, y en muchos de ellos está teniendo lugar aún una activa formación estelar. El propósito principal de esta tesis doctoral es el estudio de la evolución dinámica de estos sistemas estelares por medio de simulaciones numéricas y de la comparación de sus resultados con datos observacionales. Con este fin se analizan los efectos que, sobre la dinámica de los cúmulos, ejercen varios fenómenos de interés astrofísico tales como el campo gravitatorio galáctico, la pérdida de masa causada por la evolución estelar y la presencia de binarias primordiales. En este trabajo se presentan los resultados de más de un centenar de modelos de cúmulos, con poblaciones comprendidas en el intervalo [100, 10.000] estrellas, calculados con NBODY5, un programa estándar en el campo de la Dinámica Estelar Experimental. De los mismos se deduce que el mecanismo principal que rige la dinámica de los cúmulos abiertos es la evolución estelar de su distribución de masas, encontrándose un comportamiento diferencial fuertemente dependiente de la población inicial del cúmulo. Los mecanismos responsables de la desintegración de los cúmulos abiertos son analizados en detalle, proponiéndose un modelo analítico que ajusta razonablemente los resultados de las simulaciones. Además, y con el fin de explicar el elevado número de sistemas múltiples observados en cúmulos abiertos, se estudian los efectos que, sobre los mismos, ejerce la presencia de una cierta fracción de binarias primordiales. El papel de las binarias tambiín depende de la riqueza del cúmulo y sus efectos se interrelacionan con aquellos debidos a la evolución estelar. Por último, se

  15. [Normative Database of Optical Coherence Tomography Parameters in Childhood].

    PubMed

    Queirós, Tatiana; Freitas, Cristina; Guimarães, Sandra

    2015-01-01

    Introdução: A tomografia de coerência óptica é um exame que permite obter imagens de alta resolução dos tecidos in vivo, possibilitando a medição das estruturas oculares, nomeadamente a camada de fibras nervosas da retina e a espessura macular. Como método não invasivo torna-se particularmente útil em crianças, contudo a sua aplicabilidade está limitada pela existência de valores normativos apenas para adultos.Objetivo: Estabelecer na idade pediátrica valores normativos para a espessura da camada de fibras nervosas da retina e espessura macular, averiguando a sua influência com o género, idade, refração, lateralidade e dominância ocular.Material e Métodos: Foram submetidas a exame oftalmológico e a Cirrus HD-tomografia de coerência óptica (Carl Zeiss Meditec) 153 crianças dos quatro aos 17 anos.Resultados: Obtiveram-se valores da espessura média global da camada de fibras nervosas da retina de 97,90 μm. Não se detectaram diferenças entre géneros e com a idade, mas sim consoante a lateralidade e dominância ocular. Verificou-se um aumento da espessura com refrações positivas. Com o protocolo Macular Cube 512 x 128 verificou-se que o campo central apresentou a menor espessura (250,35 μm), apresentando os rapazes maior espessura macular.Discussão: Os valores da espessura da camada de fibras nervosas da retina e da espessura macular obtidos são comparáveis a estudos recentes. A distribuição da espessura por quadrantes respeita a distribuição normal da camada de fibras nervosas da retina. A espessura macular revelou-se superior no género masculino (campo central e anel interno), dados estes também concordantes com estudos prévios.Conclusão: Estabelecemos as normativas da espessura da camada de fibras nervosas da retina e espessura macular em crianças portuguesas saudáveis, dados estes que reestruturam a avaliação e interpretação dos parâmetros obtidos pela tomografia de coerência óptica no diagnóstico de

  16. Education Through Aerospace Components. (Spanish Title: Educación Através de Elementos Aeroespaciales.) Educação Através de Elementos Aeroespaciais

    NASA Astrophysics Data System (ADS)

    Barbosa Loureda, Oswaldo; Sobral de Araújo, Jéssyca B.

    2008-12-01

    Education is a field that needs development. For such purposes, there are various methods and tools that suggest ideas in favor of the improvement of the Brazilian people in the pedagogical, psychological and cultural aspects. Teaching is an act that demands a lot of care and responsibility; the behavior and performance of an individual in the society is the result of way that people was educated. However, the area of hard sciences demands a special attention, because the acquired knowledge is essential for the personal development of the individual and the technological future of the country. As an alternative or complementary tool for education it is suggested the use of aerospace element, since they show a vast amount of subjects qualitatively dealing with abilities of great importance for the future professional life of the students. A new Race happens, however this time the goal is not the Moon, but knowledge. El área educacional es un campo que necesita desarrollo. Para esto se dispone de diversos métodos y medios que pueden implantar ideas en pro del avance del pueblo brasilero en los aspectos pedagógicos, psicológicos y culturales. Alfabetizar es un acto que exige mucho cuidado y responsabilidad; el comportamento y desempeño de un individuo en la sociedad es el resultado de la manera en que fue educado. En particular, el área de ciencias exactas exige especial atención, pues los conocimientos adquiridos son imprescindibles para el desarrollo personal del individuo y también para el futuro tecnológico del País. Como medio alternativo o complementar de enseñanza se sugiere el uso de elementos aeroespaciales, debido a que compreende una vasta cantidad de disciplinas cualitativamente involucradas en la adquisición de habilidades de gran importancia para su vida profesional futura. Una nueva Carrera está em marcha, sin embargo esta vez la meta no es la Luna, sino el conocimiento. A área educacional é um campo que necessita de desenvolvimento. Para

  17. The Impact of Different Types of Journaling Techniques on EFL Learners' Self-Efficacy (El impacto de diferentes tipos de diario en la autosuficiencia de estudiantes de inglés como lengua extranjera)

    ERIC Educational Resources Information Center

    Baleghizadeh, Sasan; Mortazavi, Mahboobeh

    2014-01-01

    This article reports on an investigation of the impact of different methods of journaling on self-efficacy of learners of English as a foreign language. Sixty upper-intermediate Iranian English language learners were randomly assigned to three experimental conditions, namely no-feedback, teacher-feedback, and peer-feedback, and one control…

  18. Systemic Functional Linguistics and Discourse Analysis as Alternatives When Dealing with Texts (La lingüística sistémica funcional y el análisis del discurso como alternativas para trabajar con textos)

    ERIC Educational Resources Information Center

    García Montes, Paula Andrea; Sagre Barboza, Ana María; Lacharme Olascoaga, Alba Isabel

    2014-01-01

    This article presents a case study research with aims to find out which activities, methodological and textual aspects used in a reading strategies course were causing a group of students difficulties when analyzing critically written information. We conducted the study at Universidad de Córdoba (Colombia) with seventh semester students from the…

  19. EFL Students' Perceptions about a Web-Based English Reading Comprehension Course (Percepciones de estudiantes de inglés como lengua extranjera acerca de un curso de comprensión lectora apoyado en la red)

    ERIC Educational Resources Information Center

    Gómez Flórez, Érica; Pineda, Jorge Eduardo; Marín García, Natalia

    2012-01-01

    Web-based distance education is an innovative modality of instruction in Colombia. It is characterized by the separation of the teacher and learners, the use of technological tools and the students' autonomy development. This paper reports the findings of a case study that explores students' perceptions about an English reading comprehension…

  20. Adult EFL Reading Selection: Influence on Literacy (Procesos de selección de lecturas en estudiantes adultos de inglés como lengua extranjera y su influencia en la habilidad lectora)

    ERIC Educational Resources Information Center

    Basallo Gómez, Juan Sebastián

    2016-01-01

    This paper is about the impact of systematic reading selection used to promote English as foreign language learning in adult students. A qualitative action research methodology was used to carry out this project. Ten class sessions were designed to provide students an opportunity to select texts according to criteria based upon their language…

  1. Exploring Elementary Students' Power and Solidarity Relations in an EFL Classroom (Exploración de las relaciones de poder y solidaridad entre estudiantes de primaria en la clase de inglés como lengua extranjera)

    ERIC Educational Resources Information Center

    Méndez, Tatiana; García, Andrea

    2012-01-01

    This article derives from a critical discourse analysis study that reports the characteristics of elementary school students' power and solidarity relations in English as a foreign language classroom in Bogotá, Colombia, while we were doing our teaching English as a foreign language practicum. The study was based on theories of power and…

  2. Como ayudar a su hijo a tener exito en la escuela, con actividades para ninos entre las edades de 5 a 11 anos (Helping Your Child Succeed in School, with Activities for Children Ages 5 through 11).

    ERIC Educational Resources Information Center

    Paulu, Nancy

    At the heart of the No Child Left Behind Act of 2001 is a promise to raise standards for all children and to help all children meet those standards. This Spanish-language booklet provides information that parents can use to help their child succeed in school. Following an introduction, the second section of the booklet, "The Basics," offers…

  3. Como ayudar a su hijo durante la edad preescolar, con actividades para los ninos desde el nacimiento hasta los 5 anos (Helping Your Preschool Child, with Activities for Children from Infancy through Age 5).

    ERIC Educational Resources Information Center

    Department of Education, Washington, DC. Office of Intergovernmental and Interagency Affairs.

    The first 5 yeas of a child's life are a time of tremendous physical, emotional, social, and cognitive growth. Noting that research shows that children are more likely to succeed in learning when their families actively support them, this Spanish-language booklet is intended for families and caregivers who want to help their preschool children…

  4. Learning & Growing Together: Understanding and Supporting Your Child's Development = Aprender y crecer juntos: Como comprender y fomentar el desarrollo de sus hijos [with] Tip Sheets: Ideas for Professionals in Programs That Serve Young Children and Their Families.

    ERIC Educational Resources Information Center

    Lerner, Claire; Dombro, Amy Laura; Powers, Stefanie

    Based on the view that the primary caregivers for infants and toddlers are their own best resource for understanding and caring for their child and that parenting is a lifelong learning process, this book provides information and tools to help caregivers build a strong foundation for their child's development. The book, both in English and…

  5. Exploring Authorship Development among Mexican EFL Teacher-Researchers (Exploración sobre el desarrollo de la autoría en los profesores-investigadores de inglés como lengua extranjera)

    ERIC Educational Resources Information Center

    Trujeque Moreno, Eva Estefania; Encinas Prudencio, Fátima; Thomas-Ruzic, Maria

    2015-01-01

    This article presents a multi-theoretical model to address processes of "authorship development" in the English as a foreign language teaching profession. Working within a sociocultural perspective of second-language teacher education, the authors examined six experienced nonnative English-speaking teacher-researchers. Perceptions of…

  6. 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…

  7. Como ayudar a su hijo durante los primeros anos de la adolescencia: Para los padres con ninos entre las edades de 10 a 14 anos (Helping Your Child through Early Adolescence: For Parents of Children from 10 through 14).

    ERIC Educational Resources Information Center

    Paulu, Nancy

    Recognizing that parents and families can greatly influence the development of their 10- through 14-year-olds, this Spanish-language booklet is part of a national effort to provide parents with the latest research and practical information to help them support their children both at home and in school. The booklet is organized in 13 sections…

  8. Como ayudar a su hijo con la tarea escolar: Para los padres con ninos en la primaria y la secundaria (Helping Your Child with Homework: For Parents of Children in Elementary through Middle School).

    ERIC Educational Resources Information Center

    Department of Education, Washington, DC. Office of Intergovernmental and Interagency Affairs.

    Homework is an opportunity for children to learn and for families to be involved with their children's education, but helping children with homework is not always easy. This Spanish-language booklet is designed to provide parents of elementary and middle grades students with an understanding of the purpose and nature of homework and offers…

  9. Como ayudar a su hijo a ser un buen lector: Con actividades para los ninos desde el nacimiento hasta los 6 anos (Helping Your Child Become a Reader: With Activities for Children from Infancy through Age 6).

    ERIC Educational Resources Information Center

    Lehr, Fran; Osborn, Jean

    When parents and other family members read with their children, help them with homework, talk with their teachers, and participate in school or other learning activities, they give their children a tremendous advantage. The foundation for learning to read is in place long before children enter school and begin formal reading instruction. Families…

  10. 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…

  11. Kathy Learns How Breastfeeding Can Be Used...To Space Pregnancies. Mother-to-Mother Support = Josefa Aprende como la Lactancia Puede Ser Usada...Para Espaciar los Embarazos. Apoyo Madre a Madre.

    ERIC Educational Resources Information Center

    Magalhaes, Rebecca; Stone-Jimenez, 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. They explain how breastfeeding can be used to help space pregnancies, the limitations of its effectiveness as a pregnancy-avoiding method, and that the spacing of pregnancies can be…

  12. Informe: Agua potable - la EPA necesita adoptar medidas adicionales para garantizar que los pequeños sistemas de agua comunitarios señalados como graves infractores logren cumplir con las normas

    EPA Pesticide Factsheets

    Informe #16-P-0108, 22 de Marzo de 2016. La EPA puede proteger mejor al público del agua potable contaminada, lo que incluye a casi 200,000 personas en Puerto Rico que todavía carecen de agua potable segura.

  13. Como Trabajar y Vivir en la Realidad: Pasos Basicos Para Jovenes con Incapacidades, sus Padres y sus Profesores (How to Work and Live in the Real World: Basic Steps for Youth with Handicaps and Their Parents and Teachers).

    ERIC Educational Resources Information Center

    Patton, Patricia L.; And Others

    This Spanish version of "How to Work and Live in the Real World: Basic Steps for Youth with Handicaps and Their Parents and Teachers" is for young people with handicaps who are getting ready to graduate from high school and begin working and living in the adult world. The booklet places a special focus on individuals with cultural…

  14. 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…

  15. La Capacitacion de Docentes Como Prioridad de los Sistemas Educativos de America Latino y al Caribe (In-Service Teacher Training as a Priority of Latin American and Caribbean Educational Systems).

    ERIC Educational Resources Information Center

    Valle, Victor M.

    Whenever top-level officials in Latin American and Caribbean educational systems are approached, the topic of inservice teacher training is presented as a major priority. This paper outlines some ideas about the subject of inservice teacher training as a priority of educational systems in Latin American and Caribbean countries. The most frequent…

  16. 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…

  17. Como Prepararse a Tiempo para la Universidad: Un Manual para los Padres de Alumnos que Cursan la Escuela Intermedia (Getting Ready for College Early: A Handbook for Parents of Students in the Middle and Junior High School Years).

    ERIC Educational Resources Information Center

    Department of Education, Washington, DC. Office of Planning, Budget, and Evaluation.

    This Spanish language booklet, also available in English, provides "los cuatro pasos"--four steps that parents and children can take to ensure that students properly prepare for college. Step one discusses why it is important to go to college; reasons include better job opportunities, more earning potential, and the increased variety of jobs one…

  18. Como Promover el Exito de las Ninas y las Minorias en las Ciencias y en las Matematicas. Para Padres/sobre Padres (How To Promote the Science and Mathematics Achievement of Females and Minorities. For Parents/about Parents).

    ERIC Educational Resources Information Center

    Schwartz, Wendy

    Some minority and female students traditionally have not been given the help they need to enroll and succeed in mathematics and science classes. Now, however, various approaches are available to give these students the extra attention they need. Parents can help children develop an interest in science and mathematics by: (1) identifying role…

  19. La lectura literaria como arte de "performance": la teoria transaccional de Louise Rosenblatt y sus implicaciones pedagogicas (The Use of Literature as Performance Art: The Transactional Theory of Louise Rosenblatt and Its Pedagogical Implications).

    ERIC Educational Resources Information Center

    Zoreda, Margaret Lee

    This paper focuses on the work that Louise Rosenblatt and her followers in the United States have done to improve the teaching and learning of literature at all educational levels. Although these researchers have focused almost exclusively on the use of literature in the native language, the paper uses transactional theory as a basis for teaching…

  20. O Imperio como Argumento: Um Contraponto entre Joaquim Nabuco e o Bispo D. Jose Mauricio da Rocha (The Empire as Argument: A Counterpoint between Joaquim Nabuco and the Bishop Dom Jose Mauricio da Rocha).

    ERIC Educational Resources Information Center

    Marson, Izabel Andrade

    1998-01-01

    Dialogs with the previous article establishing a comparative analysis between the political acceptance present in the reactionary speech of Dom Jose Mauricio da Rocha and in the monarchist words of Joaquim Nabuco. (PA)

  1. When Students Say Far Too Much: Examining Gushing in the ELT Classroom (Cuando los alumnos dicen demasiado: análisis del uso excesivo de palabras en clases de inglés como lengua extranjera)

    ERIC Educational Resources Information Center

    Mugford, Gerrard; Cuevas, Oscar Ramírez

    2015-01-01

    English foreign-language users often overuse words when faced with difficult situations. Called gushing, such excessive use of words is often legitimately employed by native speakers to express, for instance, gratitude and apologies when a simple "thank you" or "sorry" does not sufficiently convey an interlocutor's feelings.…

  2. Estudio del proceso de ebullicion en el interior de un tubo multipuerto extruido en aluminio con mini-canales de geometria triangular usando R32 y R134a como fluidos de trabajo

    NASA Astrophysics Data System (ADS)

    Ramirez Rivera, Francisco Alberto

    The use of multiport mini-channel tubes in compact exchangers has increased in the last few years. They contributing to improve thermal efficient, compactness, energy conservation and required lower refrigerants charge by which reduction of greenhouse gases emission. Those mentioned advantages are very important aspects with regard to modern refrigeration systems design. For that reason, several experimental investigation have been carried out in order to characterize the flow boiling heat transfer process and frictional pressure drop in tubes with parallel channels. Since, the ability to estimate pressure drop and heat transfer coefficient for specific conditions is a fundamental issue to optimise the design of compact heat exchanger. In this study, the characteristics of two- phase flow pressure drop and convective boiling heat transfer have been investigated experimentally inside multiport mini-channel aluminium tube with triangular geometry, hydraulic diameter 0.715 mm and heating length of 1205 mm using R32 and R134a as working fluids. A wide experimental campaign has been carried out to complete an array of measurement under different conditions for both refrigerants studied. The experimental conditions examined included: mass velocity 275-1230 kgm -2s-1, heat flux 0.75-9.30 kWm-2, saturation temperature, 5°C, 7.5°C, 12.5°C, vapour quality 0.012-0.51. The database presented consists of 312 averages values, 223 averages values were recorded for R134a and 89 for R32. The flow boiling averages values were calculated selecting a sample of 40 readings (steps 20s) in stable conditions for all measured variables at each mass velocity tested.

  3. The Portrayal of EFLTeachers in Official Discourse: The Perpetuation of Disdain (La imagen de los profesores de inglés como lengua extranjera en el discurso oficial: la perpetuación del desdén)

    ERIC Educational Resources Information Center

    Guerrero, Carmen Helena

    2010-01-01

    The purpose of this article is to offer an interpretation of the images of Colombian English teachers constructed in official discourse, particularly (but not exclusively) in the document "Estándares básicos de competencias en lenguas extranjeras: inglés. Formar en lenguas extranjeras, el reto". This is part of a larger critical…

  4. Moral Responsibility and Confidence as Factors That Influence Teacher Involvement in Educational Change (Responsabilidad moral y confianza como factores que influyen en la participación del profesor en el cambio educativo)

    ERIC Educational Resources Information Center

    López, Cecilio

    2010-01-01

    Various factors that are not easily observed have a strong impact on educational change. In this paper, I examine some of the issues that emerged from the data collected while exploring my informants' perceptions and attitudes towards their changing roles when confronted with curriculum innovation. This research demonstrates that the experience…

  5. Coping with Social Change: Programs That Work. Proceedings of a Conference (Acapulco, Mexico, June 1989) = Como enfrentarse al cambio social: programas eficaces. Actas de uno Conferencia (Acapulco, Mexico, Junio de 1989).

    ERIC Educational Resources Information Center

    Hoskins, Irene, Ed.

    Written in English and Spanish, this document contains the proceedings of the 14th International Congress of Gerontology on concerns about the impact of rapid social change on the well-being of older women and families in Latin American and the Caribbean and about effective programs that address the needs of the older populations. The first…

  6. The Role of Genre-Based Activities in the Writing of Argumentative Essays in EFL (El papel de actividades basadas en géneros en la escritura de ensayos argumentativos en inglés como lengua extranjera)

    ERIC Educational Resources Information Center

    Chala Bejarano, Pedro Antonio; Chapetón, Claudia Marcela

    2013-01-01

    This article presents the findings of an action research project conducted with a group of pre-service teachers of a program in modern languages at a Colombian university. The study intended to go beyond an emphasis on linguistic and textual features in English as a foreign language argumentative essays by using a set of genre-based activities and…

  7. EFL Teaching Methodological Practices in Cali (Prácticas metodológicas en la enseñanza de inglés como lengua extranjera en la ciudad de Cali)

    ERIC Educational Resources Information Center

    Chaves, Orlando; Hernández, Fanny

    2013-01-01

    In this article we aim at showing partial results of a study about the profiles of English as a Foreign Language (EFL) teachers in both public and private primary and secondary strata 1-4 schools in Cali, Colombia. Teachers' methodological approaches and practices are described and analyzed from a sample of 220 teachers. Information was gathered…

  8. Introversion/Extroversion & Teachers' Perception on Dominican EFL College Students' Performance = La Introversion/Extroversion vs. La Percepcion Profesoral en el Desempeno de Estudiantes Universitarios Dominicanos de Ingles como Lengua Extranjera

    ERIC Educational Resources Information Center

    Tavarez Da Costa, Pedro

    2012-01-01

    This article discusses the relationship between introversion/extroversion and a student's performance (academic achievement) as perceived by Teachers of English as a Foreign Language in three regional centers of the Universidad Autonoma de Santo Domingo. There have been a great number of international studies already published to try to explain…

  9. The Impact of Conferencing Assessment on EFL Students' Grammar Learning (Impacto de la evaluación mediante conferencias en el aprendizaje de la gramática en estudiantes de inglés como lengua extranjera)

    ERIC Educational Resources Information Center

    Baleghizadeh, Sasan; Zarghami, Zahra

    2012-01-01

    This article reports on a study that was carried out in order to examine the impact of conferencing assessment on students' learning of English grammar. Forty-two Iranian intermediate university students were randomly assigned to an experimental and a control group. The participants in the experimental group took part in four individual and four…

  10. Teachers' Beliefs about Assessment in an EFL Context in Colombia (Creencias de los profesores acerca de la evaluación en un contexto de inglés como lengua extranjera en Colombia)

    ERIC Educational Resources Information Center

    Muñoz, Ana Patricia; Palacio, Marcela; Escobar, Liliana

    2012-01-01

    There is evidence that teachers' beliefs on teaching and learning exert an influence on the way they teach and assess learning, and on what students learn. Therefore, it is central that overt attention is devoted to the perceptions teachers have and how they influence teaching and learning. In this article we describe a study on teachers' beliefs…

  11. Encuentros esteticos deweyanos con la cultura popular anglofona en la ensenanza de ingles como lengua extranjera (EILE). Working Paper (Deweyan Aesthetic Encounters with Anglophone Popular Culture in the Teaching of English as a Foreign Language. Working Paper).

    ERIC Educational Resources Information Center

    Zoreda, Margaret Lee

    This paper discusses how the introduction of Anglophone popular culture in the English-as-a-foreign-language class can serve to foster critical aesthetic experiences. It is argued that the popular culture of the hegemonic Anglophone countries is already part of students' lives and for that reason should be included in any critical Anglophone…

  12. Ideologies Revealed during the Construction of Meaning in an EFL Class (Ideologías reveladas durante la construcción de significado en una clase de inglés como lengua extranjera)

    ERIC Educational Resources Information Center

    Fajardo Mora, Néstor Ricardo

    2014-01-01

    This article reports on an interpretive qualitative study conducted at a public university in Bogotá with 26 pre-service social studies teachers. It is focused on unveiling which ideologies are discovered when they construct the meaning of texts through text-based tasks in an English as a foreign language class. The data were collected by using…

  13. Como Ayudarle a su Hijo con la Tarea Escolar: Una guia para padres de alumnos de escuela primaria y secundaria (Helping Your Child with Homework: For Parents of Elementary and Junior High School-Aged Children).

    ERIC Educational Resources Information Center

    Paulu, Nancy, Ed.; Perkinson, Kathryn, Ed.

    This Spanish-language booklet is designed to provide parents of elementary and junior high school students with an understanding of the purpose and nature of homework along with suggestions for helping their children complete homework assignments successfully. Following a discussion of why teachers assign homework, how homework can help children…

  14. A Guide for Reading: How Parents Can Help Their Children Be Ready To Read and Ready To Learn = Guia Para Leer: Como los padres pueden preparar a sus hijos a leer y aprender desde la infancia.

    ERIC Educational Resources Information Center

    White House Initiative on Educational Excellence for Hispanic Americans, Washington, DC.

    As part of the White House Initiative on Educational Excellence for Hispanic Americans, this brochure (in English and Spanish) provides a guide to assist parents in helping their children become ready to read and to learn. The suggestions include: (1) talking to infants/toddlers to help them learn to speak and understand the meaning of words; (2)…

  15. Un estudio de evaluacion educativa manipulativos en el aprendizaje de las matematicas con estudiantes hispanos adquiriendo ingles academico como segunda lengua (A Study of the Use of Manipulatives in the Assessment of Mathematics Instruction with ESL Hispanic Students).

    ERIC Educational Resources Information Center

    Lara-Alecio, Rafael; Parker, Richard; Aviles, Claudia; Mason, Samantha; Irby, Beverly J.

    1998-01-01

    As an alternative form of mathematics assessment for use with limited-English-proficient students, 14 mathematics tasks using manipulatives were administered to 45 Hispanic students in grades 1-3 and readministered 2-3 weeks later. Test reliability and validity, task difficulty, and the relationship among test subscales across grades were…

  16. 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…

  17. A Comparison of Chinese and Colombian University EFL Students Regarding Learner Autonomy (Comparación entre estudiantes universitarios de inglés chinos y colombianos con respecto a su autonomía como aprendices)

    ERIC Educational Resources Information Center

    Buendía Arias, Ximena Paola

    2015-01-01

    This research seeks to gain deeper understanding of learner autonomy in English as a Foreign Language students from different cultures through the identification and analysis of similarities and differences between Chinese and Colombian students from two public universities: Tianjin Foreign Studies University in China and Universidad Surcolombiana…

  18. Los padres como maestros de los ninos. Los padres como recursos para los maestros. Serie E: [E1] logro de la participacion de los padres. cuadernos 1 y 2. Edicion para el maestro. Cuadernos para el entrenamiento de maestros de educacion bilingue. (Parents as Their Children's Teachers. Parents as Resources for Teachers. Series E: Parent Participation, Book 1 and 2. Teacher Edition. Bilingual Education Teacher Training Packets).

    ERIC Educational Resources Information Center

    Lazos, Hector, Comp.

    This guide on training bilingual education teachers focuses on parent participation in school activities. The guide addresses three groups of people: paraprofessionals and non-graduate students, bilingual teachers, and graduate students. Two units are presented, one dealing with the important influence parents have on their child's language…

  19. Los padres como maestros de los ninos. Los padres como recursos para los maestros. Serie E: El logro de la participacion de los padres, cuadernos I y II. Edicion para el estudiante. Cuadernos para el entrenamiento de maestros de educacion bilingue. (Parents as the Children's Teachers. Parents as Resources for the Teachers. Series E: Success with Parent Participation, Books I and II. Student Edition. Bilingual Education Teacher Training Packets.)

    ERIC Educational Resources Information Center

    Lazos, Hector

    The student versions of two learning modules for teacher training in bilingual education are part of a series focusing on promoting parent participation in the school system. An introductory section discussing the overall objectives of the materials is followed by two modules, each consisting of introductory sections and two units containing…

  20. 75 FR 68684 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-500 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-09

    ... Support, Av. Brig. Farina Lima, 2170, Sao Jose dos Campos--SP, CEP: 12227-901--P.O. Box: 38/2, BRASIL... Support, Av. Brig. Farina Lima, 2170, Sao Jose dos Campos--SP, CEP: 12227-901--P.O. Box: 38/2,...

  1. Parametric Analysis of Combustion of Porous Medium.

    DTIC Science & Technology

    1985-12-01

    Desenvolvimento 2 Ministerio da Aeronautica Brasilia , Brazil 2. Centro Tecnico Aeroespacial 2 Ministerio da Aeronau ica Sao Jose dos Campos , SP , Brazil 12200 3...Major Antonio C. S. Serapiao , Brazilien air force 3 Centro Tecnico Aeroespacial Sao Jose dos Campos , SP , Brazil 12200 4. Associate Professor David

  2. Face Recognition Using Infrared Imaging

    DTIC Science & Technology

    2002-12-01

    Monterey, California 4. Centro Tecnico Aeroespacial Biblioteca Central Sao Jose dos Campos, SP Brazil 5. Prof. Monique Fargues ECE...7. Prof. Roberto Cristi ECE Department Naval Postgraduate School Monterey, California 8. Diogo C. Pereira Centro Tecnico Aeroespacial Instituto de Aeronautica e Espaco Sao Jose dos Campos, SP Brazil 97

  3. Acrodysostosis

    MedlinePlus

    ... Arkless-Graham; Acrodysplasia; Maroteaux-Malamut Images Anterior skeletal anatomy References Jones KL, Jones MC, Del Campo M. Other skeletal dysplasias. In: Jones KL, Jones MC, Del Campo M, eds. Smith's Recognizable Patterns of Human Malformation . 7th ed. Philadelphia, PA: Elsevier Saunders; 2013: ...

  4. Alternative options for prescribing physical activity among obese children and adolescents: brisk walking supported by an exergaming platform.

    PubMed

    Cebolla i Martí, Ausias; Álvarez-Pitti, Julio Carlos; Guixeres Provinciale, Jaime; Lisón, Juan Francisco; Baños Rivera, Rosa

    2014-09-12

    Introducción: La inactividad de los niños se ha identificado como un problema importante de salud pública. La generalización del sedentarismo está directamente relacionada con el aumento de la obesidad, por ello, el tratamiento de la obesidad infantil se basa en la intervención en estilos de vida siendo el aumento de actividad física uno de los objetivos principales. Los videojuegos activos podrían ser útiles para incrementar la actividad física, pero aún sería necesaria más investigación en este campo. Este estudio analiza los efectos de un videojuego activo que implica marcha rápida sobre el esfuerzo percibido, la auto-eficacia, las expectativas positivas y la satisfacción de un grupo de niños obesos y se compara con la respuesta de un grupo de niños normopeso. Se registraron también variables fisiológicas como la frecuencia cardiaca, el consumo de oxígeno y el gasto metabólico. Método: Una muestra de 42 niños fue estudiada. Los jóvenes fueron distribuidos de forma aleatoria en las dos opciones de ejercicio, marcha rápida en tapiz rodante con o sin el apoyo del videojuego activo (Wii-Fit). Resultados: Los niños obesos tuvieron puntuaciones significativamente más altas que los normopeso en las expectativas y la satisfacción que les producía la marcha rápida con apoyo del videojuego activo, pero en cambio no hubo diferencias significativas en cuanto a la auto-eficacia, el esfuerzo percibido o en las variables fisiológicas. Conclusiones: Estos resultados sugieren que esta plataforma de videojuego activo podría ser una herramienta útil para facilitar la práctica de la marcha rápida en niños obesos, como parte de una intervención para tratar la obesidad.

  5. 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

  6. [Clinical applications of the use of probiotics in pediatrics].

    PubMed

    Álvarez-Calatayud, Guillermo; Pérez-Moreno, Jimena; Tolín, Mar; Sánchez, César

    2013-01-01

    Introducción: El empleo de probióticos supone un novedoso avance en el campo de la Pediatría puesto que pueden ser útiles en la prevención y tratamiento de múltiples patologías gastrointestinales, constituyendo un elemento más en nuestro arsenal terapéutico. Objetivo: En este artículo se presenta una revisión actualizada de la literatura científica sobre el uso de los probióticos en Pediatría, principalmente en problemas gastrointestinales con alteración en la microbiota intestinal describiéndose las principales aplicaciones del empleo de los probióticos y prebióticos en la infancia y repasando las líneas de investigación futuras. Resultados y conclusiones: A pesar de existir suficiente evidencia científica en varias patologías, la utilización de probióticos no está del todo incorporado a la práctica clínica habitual de los pediatras. Se emplea en el contexto de las enfermedades gastrointestinales (diarrea aguda infecciosa, la diarrea asociada a antibióticos, sobredesarrollo bacteriano) y, más recientemente, en procesos inflamatorios crónicos como la enfermedad inflamatoria intestinal o en trastornos funcionales como el cólico del lactante o el estreñimiento. También se ha valorado su efecto beneficioso en alteraciones extraintestinales, tales como la alergia (dermatitis atópica) o los efectos sobre las mucosas respiratorias o urogenitales y, en los últimos años, en la prevención de patología del recién nacido pretérmino y en la infección por H. pylori. Además existen varias líneas de investigación abiertas en la suplementación alimentaria con probióticos y prebióticos. Cada cepa prebiótica debe ser estudiada individualmente y extensamente para determinar su eficacia y seguridad en todas aquellas situaciones en que su empleo puede ser aconsejable.

  7. Quality management systems for fruit fly (Diptera: Tephritidae) sterile insect technique

    SciTech Connect

    Caceres, C.; Robinson, A.; Shelly, T.; Hendrichs, J.

    2007-03-15

    cinco anos bajo el proyecto de Investigacion Coordinada (PIC) sobre 'el Aseguramiento de la Calidad de Moscas de las Frutas Criadas y Liberadas para su Uso en Programas de TIE'. Los participantes en el PIC representan 16 paises con experiencia en campos de investigacion basica y aplicada. Para asegurar que los procedimientos desarrollados fueran apropiados y pertinentes, se realizaron una variedad de estudios para el desarrollo de protocolos para evaluar la compatibilidad y para mejorar los procedimientos de colonizacion y manejo de cepas salvajes. Estudios especificos trataron asuntos relacionados con la nutricion de insectos, los protocolos de irradiacion, la dispersion y supervivencia en el campo, evaluacion del comportamiento en jaulas de campo, y el mejoramiento de la competitividad sexual. Los objetivos fundamentales fueron el aumentar la eficiencia y reducir los costos de los programas operacionales de control de moscas de las frutas donde TIE es utilizada. Muchos de los protocolos desarrollados o mejorados durante el PIC seran incorporados en el Manual Internacional de Control de Calidad para Moscas Estriles de la familia Tephritidae, para estandarizar componentes claves como la produccion, esterilizacion, envio, manejo y liberacion de insectos esteriles. (author)

  8. AIDS and its treatments: two doctors' narratives of healing, desire, and belonging.

    PubMed

    Diedrich, Lisa

    2005-01-01

    In this essay, I analyze two memoirs--Rafael Campo's The Poetry of Healing: A Doctor's Education in Empathy, Identity, and Desire and Abraham Verghese's My Own Country: A Doctor's Story of a Town and Its People in the Age of AIDS--which describe the effects of treating HIV/AIDS on each doctor's identity, on his desire for community and belonging, and on his identification and/or disidentification with the medical profession in the United States. My readings of Campo and Verghese revolve around three key terms provided by Campo's subtitle: identity, empathy, and desire. I shift the order of these terms in Campo's subtitle because I want to read identity, empathy, and desire in Campo and Verghese through and along with the theoretical "pragmatics" of Gilles Deleuze and Felix Guattari.

  9. High School Students' Previous Knowledge about the Stars. (Spanish Title: Conocimientos Previos de Estudiantes de Secundaria Acerca de Las Estrellas.) O Conhecimento Prévio de Alunos do Ensino Médio sobre as Estrelas

    NASA Astrophysics Data System (ADS)

    Iachel, Gustavo

    2011-12-01

    reconocen que una estrella es formada por una masa de gas; varios conocimientos previos parten de aspectos puramente visuales; por otro lado, los estudiantes no tienen el hábito de observar la naturaleza detalladamente, entre otros problemas. Vemos esta investigación como una probable fuente de referencia en la que los profesores de ciencias pueden reconocer la importancia del conocimiento previo, y la forma como interfieren con su práctica de enseñanza, además de la adquisición de recursos para la planificación de sus clases. Com base em leituras de artigos relacionados ao ensino de Astronomia publicados no Brasil, verificou-se a inexistência de investigações sobre o conhecimento prévio de estudantes acerca das características físicas das estrelas, fato que nos motivou a desenvolver a pesquisa apresentada. Os conhecimentos prévios de 125 estudantes do primeiro ano do ensino médio constituíram os dados do estudo, os quais foram inferidos através da análise das respostas cedidas em questionários impressos (Apêndice A). A partir da análise de conteúdo dessas respostas tornou-se possível realizar algumas inferências como, por exemplo: vários estudantes possuem dificuldade em elaborar um modelo explicativo sobre o funcionamento de uma estrela; são poucos os que dizem que as estrelas possuem certo tempo de existência; alguns alunos as imaginam com pontas; poucos reconhecem que uma estrela é formada por uma massa de gás; vários conhecimentos prévios partem de aspectos meramente visuais; ainda assim, os estudantes não possuem o hábito de observar a natureza mais detalhadamente, entre outras. Vemos essa pesquisa como uma provável fonte de consulta na qual os professores de ciências poderão, além de reconhecer a importância dos conhecimentos prévios para o ensino e como eles interferem em sua prática, adquirir subsídios para o planejamento de suas aulas.

  10. Development of Educational Resources to Include the Teaching of Astronomy in the First Years of the Basic Education. (Spanish Title: Desarrollo de Recursos Pedagógicos Para Incluir la Enseñanza de la Astronomía en los Primeros Años de la Educación Básica.) Desenvolvimento de Recursos Pedagógicos Para Inserir o Ensino de Astronomia nas Séries Iniciais do Ensino Fundamental

    NASA Astrophysics Data System (ADS)

    da Silva Morett, Samara; de Oliveira Souza, Marcelo

    2010-07-01

    In this report will be presented the development of educational resources for the presentation of concepts of astronomy in the early grades of elementary school. This material is composed by presentations developed with the use of new technological resources, by the development of experiments and by the presentation of curiosities related to this field. The experiments were constructed with low cost material in order to allow the students involved to rework them in other occasions. The material presented aims to emphasize the relationship between Astronomy and the daily life of students. The inclusion of Astronomy in elementary school is a way to demonstrate to students how this area is present in an active way in their daily lives. The classes involved in the project participated in a survey with the aim of providing information about the prior knowledge they had about topics in astronomy that were considered during the project. With the experiments conducted, and the aid of new technologies, the astronomical concepts were presented to students of 4th and 5th years of basic education of a municipal school of Campos dos Goytacazes (RJ). After the presentations new data collections were carried out with the aim of verifying the level of learning obtained and it was observed that the method used was an important tool to aid the process of teaching and learning. The project obtained good results. En este informe se presenta el desarrollo de recursos pedagógicos para la presentación de los conceptos de la astronomía en los primeros grados de la escuela primaria. Este material consiste en las presentaciones hechas con el uso de nuevos recursos tecnológicos, haciendo experimentos y análisis de objetos de interés relacionados con este ámbito. Los experimentos fueron construidos con material de bajo costo a fin de que los estudiantes involucrados podrían rehacer en otras ocasiones. El material presentado tiene como objetivo destacar la relación entre la astronom

  11. A Influência da Escola e da Mídia na Obtenção dos Conhecimentos Astronômicos

    NASA Astrophysics Data System (ADS)

    da Cunha, W. S.; Voelzke, M. R.; Amaral, L. H.

    2006-08-01

    O universo em que vivemos possui segredos jamais imaginados pelo homem, fruto da pequena proporção que ocupamos diante de um cosmos infinito. A astronomia funciona como um instrumento que sacia a sede humana em desvendar esses segredos, estudando as galáxias, quasares, pulsares além da existência de todos os elementos que preenchem o espaço cósmico, o vácuo, não mais vazio como se pensou em outros tempos. A mídia explora esse campo de forma mística e também científica. A difusão adequada e dentro dos padrões educacionais vigentes, de conceitos astronômicos, se faz necessária, devido sua presença nos conteúdos escolares, centros de ciência e na mídia, de modo geral. A reforma do Currículo Básico da Escola Pública da maioria dos Estados brasileiros introduziu conceitos astronômicos desde a pré-escola até o Ensino Médio. Num estudo realizado com 1.032 alunos do Ensino Médio de seis escolas estaduais, revelou-se através da aplicação de um questionário que abordava conheciment os básicos em astronomia, como estes foram adquiridos e qual era a infra-estrutura oferecida pela escola: para 66,2% dos entrevistados o professor já fez alguma apresentação a respeito de astronomia. O presente estudo revelou também que 44,5% dos alunos entrevistados adquiriram seus conhecimentos astronômicos na escola, 28,1% através da televisão e 27,4% afirmaram que seus conhecimentos foram obtidos através de outros tipos de mídia (internet, filmes e revistas). Embora o estudo revele claramente que há certo equilíbrio na forma em que os alunos obtiveram seus conhecimentos astronômicos, a mídia ainda explora e muitas vezes desperta o interesse pela astronomia com assuntos que não fazem parte de nosso cotidiano como, por exemplo, o homem na Lua, os projetos espaciais e a primeira viagem de um astronauta brasileiro no espaço. Porém, em certos casos, a mídia pode promover conhecimentos incompletos ou mesmo equivocados sobre os conceitos que envolvam

  12. A New Method to Retrieve the Orbital Parameters of the Galilean Satellites Using Small Telescopes: A Teaching Experiment

    NASA Astrophysics Data System (ADS)

    Sanchez-Lavega, Agustin; Ordoñez-Etxebarria, Iñaki; del Rio-Gaztelurrutia, Teresa

    2014-11-01

    We show in this communication how it is possible to deduce the radius of the orbits of Galilean satellites around Jupiter using a small number of well-planned observations. This allows the instructor to propose a complete student activity that involves planning an observation, the observation itself, processing and analyzing the images and deduction of relevant magnitudes [1]. This work was performed in the Aula EspaZio Gela under the Master in Space Science and Technology [2].References[1] I. Ordoñez-Etxebarria, T. del Río Gaztelurrutia and A. Sánchez Lavega, European Journal of Physics, Eur. J. Phys., 35, 045020 (14pp), (2014)[2] A. Sánchez-Lavega et al., European Journal of Engineering Education, doi:10.1080/03043797.2013.788611 (2013)AcknowledgementsThis work was supported by a grant from Diputaciõn Foral de Bizkaia — Bizkaiko Foru Aldundia to the Aula Espazio Gela.

  13. Ondas de choque em jatos de quasares e objetos BL Lacertae

    NASA Astrophysics Data System (ADS)

    Melo, F. E.; Botti, L. C. L.

    2003-08-01

    Este trabalho é parte de um projeto que vem sendo realizado há dois anos no CRAAM, cujos objetivos principais são analisar e aplicar um modelo generalizado de ondas de choque em jatos relativísticos de plasma, presentes em quasares e objetos BL Lacertae, para explicar a variabilidade observada nestes objetos. O método consiste em uma decomposição de curvas de luz em séries de explosões similares, em várias freqüências, baseando-se em uma evolução espectro-temporal média das explosões. A partir da evolução média, um ajuste de cada explosão é feito com base em equações empíricas, modificando-se apenas parâmetros específicos de cada explosão. Inicialmente o modelo foi aplicado ajustando-se as curvas de luz a explosões delineadas por uma evolução do choque em três estágios, segundo a predominância do processo de emissão: síncrotron, Compton e adiabático. Entretanto, nesta nova fase de projeto, visando uma parametrização mais concisa, uma otimização do algoritmo de ajuste e uma convergência mais rápida, a formulação para cada evento foi assumida com uma evolução em apenas dois estágios: subida e descida. Isto possibilitou uma ótima delineação das curvas de luz das fontes OV236, OJ287, 3C273 e BL Lac, entre 1980 e 2000, nas freqüências 4.8, 8.0, 14.5 e 22 GHz, utilizando-se dados do Observatório da Universidade de Michigan, do Observatório do Itapetinga (Atibaia SP) e do Observatório Metsähovi. Como conclusões importantes, verificou-se que: os parâmetros ajustados descrevem o comportamento do jato; os valores do índice que descreve a expansão do jato sugerem que o mesmo se expande de uma forma não-cônica; o campo magnético é turbulento atrás da frente de choque; e as peculiaridades das explosões são devidas à influência de grandezas tais como o coeficiente da distribuição espectral de energia dos elétrons, a intensidade de campo magnético e o fator de feixe Doppler, no início do choque.

  14. Analysis and Synthesis of Leaky-Wave Devices in Planar Technology

    NASA Astrophysics Data System (ADS)

    Martinez Ros, Alejandro Javier

    estan determinadas por la constante de fase del modo "leaky" que es el que determina el angulo de apuntamiento y por la tasa de radiacion que es la que determina la intensidad de los campos radiados. De esta manera, controlando en amplitud y fase el modo "leaky" se puede obtener un control efectivo sobre el diagrama de radiacion del dispositivo. Ademas, con el objetivo de poder obtener de una manera mas eficiente las caracteristicas de propagacion de los modos de fuga "leaky" en funcion de los principales parametros geometricos de la estructura, se han desarrollado diversas herramientas de analisis modal basadas en la tecnica de resonancia transversa de la estructura. La capacidad para obtener un control simultaneo de la constante de propagacion compleja del modo "leaky", ha sido demostrada mediante el diseno y fabricacion de varios tipos de antena "leaky wave" (LWA) y de otros dispositivos como multiplexores y sistemas de enfoque en campo cercano. Para ello, se ha utilizado la tecnologia planar de guia de onda integrada en sustrato (susbstrate integrated waveguide, SIW). Esta recientemente desarrollada tecnologia, permite disenar dispositivos de microondas basados en tecnologia clasica de guia de ondas con sistemas de fabricacion estandar usados en tecnologia de circuitos impresos (printed circuit board, PCB). De esta forma, se pueden integrar en un mismo sustrato muchas de las diferentes partes que forman un sistema de comunicaciones, mejorando asi su robustez y compactibilidad, ademas de reducir el coste y de contar con menores perdidas que otras tecnologias planares como la microstrip.

  15. Mixed-Methods Study that Examines Nine Science Teachers' Perceptions of Slooh Robotic Telescope for Teaching Astronomy. (Breton Title: Métodos Mistos de Estudo que Examinam a Percepção de Nove Professores de Ciências sobre o Telescópio Robótico Slooh Para Ensino de Astronomia.) Métodos Mixtos de Estudio que Examinan la Percepcion de Nueve Profesores de Ciencias sobre EL Telescopio Robótico Slooh Para la Enseñanza de la Astronomía

    NASA Astrophysics Data System (ADS)

    Gershun, Daniel C.; Slater, Timothy F.; Berryhill, Katie J.

    2014-07-01

    Although previous studies show that robotic telescopes have the potential to enhance student learning, there is comparatively little research that focuses on teacher perceptions of this technology. This study investigates: "what is the academic merit of using SLOOH robotic telescopes to teach astronomy as perceived by science teachers?" Our sample consists of nine science teachers of students aged 13-18 years. Pre- and post-tests, interviews, and surveys were collected during two weeks of a summer online course about robotic telescopes. While pre and post-tests do not reveal a statistically significant gain in astronomy content knowledge, analysis of qualitative data reveals five themes which describe the most important aspects of using SLOOH according to participants: "Images," "Interface," "Classroom Application," "Instructor Impact," and "Logistical Issues." Analysis of these themes suggests that SLOOH can provide an interactive and social learning environment with capabilities to incorporate crossdisciplinary themes. Embora estudos anteriores mostram que os telescópios robóticos têm o potencial de melhorar a aprendizagem dos alunos, há relativamente pouca investigação focada nas percepções de professores a respeito desta tecnologia. Este estudo investiga: "qual é o mérito acadêmico da utilização de telescópios robóticos Slooh para ensinar astronomia, tal como percebido pelos professores de ciências?" Nossa amostra é composta por nove professores de ciências de estudantes com idades entre 13-18 anos pré e pós-testes, entrevistas, e levantamentos foram coletados durante duas semanas de um curso on-line de verão sobre telescópios robóticos. Enquanto os testes pré e pós não revelaram um ganho estatisticamente significativo no conhecimento do conteúdo astronomia, a análise de dados qualitativos revela cinco temas que descrevem os aspectos mais importantes da utilização Slooh de acordo aos participantes: "Imagens", "Interface", "Aplica

  16. Jupiter's Galilean satellites mutual events as a teaching tool

    NASA Astrophysics Data System (ADS)

    Rojas, J. F.; Sanchez-Lavega, A.

    2015-10-01

    We present a set of observations of the mutual phenomena (occultations and eclipses) between Jupiter's Galilean satellites in 2014 and 2015 obtained with a Celestron 11 telescope from the Aula EspaZio Gela at E.T.S.I. - UPV/EHU. These observations are used as a practical teaching tool for photometry and astrodynamics in different matters of the Master in Space Science and Technology UPV/EHU.

  17. CAD/CAM Feasibility Study

    DTIC Science & Technology

    1990-09-11

    zV L LA LA LA C LA LO LO L 0 00 CL ) (A 1L LA euLnQ E = ~~4- :c CL (a S.- u x Ln - 04 - 0 4 ~ 4-) m it (A ( auLA o L w. (A S- w (A C ) CD CD - cl. 4...simulator’s timing resolution that is generally less than 1 ns. Also, the trace depth of simulated logic analyzers is virtually unlimited. Triggering

  18. Advanced Design Composite Aircraft

    DTIC Science & Technology

    1976-02-01

    tensile properties. The cost increase is minimal. The alloy 7471.-T76 has been selected to replace 7075, since it has higher toughness and virtually the...i. / fy/’AtJ’Jk fyfJPt’Mi RAY PPff LOHOtKON WfJEK LOHuneOAJ Wf-Ti AL AL/ \\ \\ I I ENälNl COMPT AULA sopezPLAinc yexwD JET FLAP hwP

  19. Requirements and Approaches for Low Cost Simulator Graphics.

    DTIC Science & Technology

    1985-06-01

    tational speed of the Atari host processor (a Mostek 6502 running on a 2.8M Hz clock) rolling the display in real time would be virtually impossible... Aula ~~~~~~~~~~~j,~~. 4.1iia o)Cj a; L I j(3jU q J1jj: TR10- B I 12 * which includes the inner loop equivalent time delay, visual perceptual delay

  20. Department of Defense Congressional Action on FY 1985 Authorization Request.

    DTIC Science & Technology

    1984-10-19

    laboratory. tic .. of the mutheri. List city, state. sad ZIP Code. Kacg 10 Provres Mauetis. P11roject. Tam& Atos. @Ad fork Unit Numbers. Rste oris~ this...No 4 - 62 No - 2Autho.- iItion PFoor Action Floor ActIOI Finl Action finl ActiOn Quest JUN 04 20 JUN 04 9 AULA 04 6 AUG 04 I FPe 64 Cmeoe fro, CIN0e fr

  1. Journal of Chinese Society of Astronautics (Selected Articles),

    DTIC Science & Technology

    1987-04-06

    combustion speed characteristics for positive and negative r3 113 r p e r’ponentS The Cor, aula which is derived when the covered surface area fractior, p’ is...8217, )b!,;-, ,bgr the coordinate system GX,Y,Z 2 ’:1tt, ’ ot-te tic orIgh angle around axis GZ, obtaining coordinate system GX’IYZ" . The angles 9,64

  2. Nuclear Monitoring Research at the Center for Seismic Studies

    DTIC Science & Technology

    1991-05-13

    Pachelmsky aula -’ . - d approximately 100 km to the south-east of OBN (Belyaevsky,1974). I- ,r,:ssion is traced to t-,e south-ea, 0. approximately 700...contributes to its poor backazimuth estimation. These results, combipred with those described in the section on polarization characteris- tics , confirm...ARCESS, using polarization characteris- tics as predictors. The attributes studied in the section on polarization (with the exception of azimuth) are

  3. Research on Secure Systems and Automatic Programming. Volume II

    DTIC Science & Technology

    1977-10-14

    palTfibox SUOS;.rdmoo 30 .zequnu orq; A~qvzQPTsuo3 avnpoz OZ 0Tqv aq PKnom IT UOiIVTG OUT -zopio 042 30 AZIATITSu.1; 012 jnoqv aula ssooid BUT~rlI0UQS...iaLCCrapLrt.taLuoi i: possible only when there is a unique way of executinq * tic A~jS 4d i. .4 A u&iCiTION OF CASNET IN .103,,JUNE 1975,, Page b5

  4. Dr. Ivan J. Birrer: Service at the Command and General Staff College, Fort Leavenworth, Kansas, 20 January 1948 to 30 June 1978

    DTIC Science & Technology

    1978-04-21

    requ’rements, and that sort of business caused some people a great eal of difficulty. There was a certain auLa , even in those days, about Leavenworth...Jod cutter kiu& of operatlon." T:oe.’e w.,.i never really th.’s f_ ý ’ji L.:. L. 3 z -- .h’)3 a i ; C j L L ýu ý: LUISL r tiC u -- integration in the

  5. Waterborne Commerce of the United States Calendar Year 1987. Part 2. Waterways and Harbors Gulf Coast, Mississippi River System and Antilles

    DTIC Science & Technology

    1989-05-31

    TRAFFIC, 1987 DO-E$ TIC (SHORT TONS) INTERNAL CO4MDITY TOTAL TH-_u__ _ _ INBOUND OUTBOUND NORTHBOUND $OUT HWOU TUTAL...2,426,582 326,615 2821 PLASTIC 4ATERIALS---------..... --------- - 4,292 1 4,291 .......... .......... .......... l..........----------- 2 STNt TIC U ..... i...1,177 .......... .......... .......... .......... ............ 2041 A HEAT FLOJR ANO 5’ AULA ----------------- -461,658.......... 4b1b,56

  6. Relocation of the 146th Tactical Airlift Wing of the California Air National Guard. Appendices

    DTIC Science & Technology

    1984-12-01

    I orc Dear Msgt Black: We have received the Notice of tic 4vt or the 146th Tactical willk be .. orths.roAirlift Wing’s Base Relocation EI/Ihstime we...y tap e age i y from •-.!ýiý:iit!- ip d sina i g ar la dsw o l to prevent the agency from Comments on Technical Aula e deftne those to be protected

  7. Experimental Study of the Fluid Mechanics of Unsteady Turbulent Boundary Layers.

    DTIC Science & Technology

    1987-05-01

    8y !-U,, ( aula ) (7 (uly -UIVI(a I/ay) unste ’.dy flow steady flow Figure 5.17 Transfer of kinetic energy between velocity fields near the wall (the...The maxima of periodic and time-averaged measures of production were coincidence in space - this finding raised the possibility that determinis- tic ... tic pressure-strain terms would be important in unsteady boundary-layer flow. It is also of interest to examine whether the characteristic time lags

  8. Patent Abstract Digest. Volume II.

    DTIC Science & Technology

    1981-03-01

    ae.Nihh pgdSa. a.o~~nraypto aciJng an baVl. aUla tts0vman as. ylaiiyraligfo aws. o namta atia Iniisdsaa,,o wtanaIga us sah Ea ta piaal wndJoea.JT 09 AFC...D.C. High molecular weight enyne polysulfone thermoplas- [21] Appi. No: 946.291 tics are prepared by the reaction of alkali metal salts of 1,4-bis(3

  9. Nuclear Weapon Effect Research at PSR (Pacific-Sierra Research Corporation) - 1983. Acute Radiation Effects on Individual Crewmember Performance

    DTIC Science & Technology

    1984-08-31

    r a ~~~W IfIlS a Q. -IC’ -4 Z V) w - - - - - - - @ - - - - t - - - - a - - - -. - - - - - - -t - w IF0 i - - - -- - -- - - - - - ~1~ 199 c z U. aula I...quantities or slight modifications.. Among th nest useful of diagnos-""’ tics using residuals are,’’" - v..-- I . The res•iduals e =Yi -Yi themselves

  10. Estudio comparativo de cúmulos abiertos ricos en estrellas masivas

    NASA Astrophysics Data System (ADS)

    Baume, G.; Feinstein, A.; Vázquez, R. A.

    Los cúmulos abiertos muy jóvenes proveen valiosa información sobre las teorías de evolución estelar. No obstante, no se conoce mucho sobre los miembros mas débiles de estos objetos. Se llevaron a cabo entonces, estudios detallados (fotometría CCD-UBVI y polarimetría) en los cúmulos abiertos: Tr 14, Cr 272, Stok 16, NGC 6231, NGC 3293 y HM 1. Se realizó entonces un análisis comparativo entre ellos y con los objetos Pismis 20 (Vázquez et al. 1995) y NGC 5606 (Vázquez et al. 1994). En particular, se analizó la secuencia principal inferior de los distintos cúmulos, se estudió la extinción interestelar y las propiedades del polvo, se determinaron las correspondientes IMF, y se estudió la forma en que se distribuyen las estrellas menos masivas en relación con las más masivas. Como conclusiones del trabajo se puede decir que se han redeterminado con mayor precisión las distancias y las edades de los objetos bajo estudio, se han hallado varias estrellas con alta probabilidad de estar en fase de contracción y se ha notado una dispersión de edad entre las estrellas más brillantes y las menos brillantes (confirmando la idea de que la formación estelar no es simultánea ni independiente de la masa). Además, se han encontrado que las pendientes de las IMFs de estos objetos son más planas que la de las estrellas de campo y las de cúmulos más evolucionados, siendo comparable con las halladas en objetos jóvenes de la Nube Mayor de Magallanes (Will et al. 1996).

  11. VIII Olimpíada Brasileira de Astronomia e Astronáutica

    NASA Astrophysics Data System (ADS)

    Garcia Canalle, João Batista; Villas da Rocha, Jaime Fernando; Wuensche de Souza, Carlos Alexandre; Pereira Ortiz, Roberto; Aguilera, Nuricel Villalonga; Padilha, Maria De Fátima Catta Preta; Pessoa Filho, José Bezerra; Soares Rodrigues, Ivette Maria

    2007-07-01

    Neste trabalho apresentamos as motivações pelas quais organizamos, em conjunto, pela primeira vez, a Olimpíada Brasileira de Astronomia incluindo a Astronáutica, em colaboração com a Agência Espacial Brasileira. Esta ampliação contribuiu para atrair ainda mais alunos, professores, escolas e patrocinadores para participarem desta Olimpíada. Em 2005 participaram da VIII Olimpíada Brasileira de Astronomia e Astronáutica (VIII OBA) 187.726 alunos distribuídos por 3.229 escolas, pertencentes a todos os estados brasileiros, incluindo o Distrito Federal. O crescimento em número de alunos participantes foi 52,4% maior do que em 2004. Em abril de 2005 organizamos, em Itapecerica da Serra, SP, um curso para os 50 alunos previamente selecionados e participantes da VII OBA e ao final selecionamos, dentre eles, uma equipe de 5 alunos, os quais representaram o Brasil na X Olimpíada Internacional de Astronomia, na China, em outubro de 2005. Ganhamos, pela primeira vez, uma medalha de ouro naquele evento. Em Agosto de 2005, organizamos a VIII Escola de Agosto para 50 alunos e respectivos professores, em Águas de Lindóia, SP, juntamente com a XXXI reunião anual da Sociedade Astronômica Brasileira (SAB). Em novembro de 2005 realizamos a I Jornada Espacial, em São José dos Campos, com 22 alunos e 22 professores selecionados dentre os participantes que melhores resultados obtiveram nas questões de Astronáutica da VIII OBA. Neste trabalho detalhamos os resultados da VIII OBA bem como as ações subseqüentes.

  12. Nonspherical Radiation Driven Wind Models Applied to Be Stars

    NASA Astrophysics Data System (ADS)

    Arauxo, F. X.

    1990-11-01

    ABSTRACT. In this work we present a model for the structure of a radiatively driven wind in the meridional plane of a hot star. Rotation effects and simulation of viscous forces were included in the motion equations. The line radiation force is considered with the inclusion of the finite disk correction in self-consistent computations which also contain gravity darkening as well as distortion of the star by rotation. An application to a typical BlV star leads to mass-flux ratios between equator and pole of the order of 10 and mass loss rates in the range 5.l0 to Mo/yr. Our envelope models are flattened towards the equator and the wind terminal velocities in that region are rather high (1000 Km/s). However, in the region near the star the equatorial velocity field is dominated by rotation. RESUMEN. Se presenta un modelo de la estructura de un viento empujado radiativamente en el plano meridional de una estrella caliente. Se incluyeron en las ecuaciones de movimiento los efectos de rotaci6n y la simulaci6n de fuerzas viscosas. Se consider6 la fuerza de las lineas de radiaci6n incluyendo la correcci6n de disco finito en calculos autoconsistentes los cuales incluyen oscurecimiento gravitacional asi como distorsi6n de la estrella por rotaci6n. La aplicaci6n a una estrella tipica BlV lleva a cocientes de flujo de masa entre el ecuador y el polo del orden de 10 de perdida de masa en el intervalo 5.l0 a 10 Mo/ano. Nuestros modelos de envolvente estan achatados hacia el ecuador y las velocidads terminales del viento en esa regi6n son bastante altas (1000 Km/s). Sin embargo, en la regi6n cercana a la estrella el campo de velocidad ecuatorial esta dominado por la rotaci6n. Key words: STARS-BE -- STARS-WINDS

  13. ZEOLITE: "THE MAGIC STONE"; MAIN NUTRITIONAL, ENVIRONMENTAL, EXPERIMENTAL AND CLINICAL FIELDS OF APPLICATION.

    PubMed

    Laurino, Carmen; Palmieri, Beniamino

    2015-08-01

    Introducción: las zeolitas (clinoptilolitas) son una familia de aluminosilicatos y cationes agrupada para formar agregados macro de pequeñas cavidades individuales. En el área médica están involucrados en los mecanismos de desintoxicación y en capturar iones y moléculas en sus agujeros. En realidad, clasificamos cerca de 140 tipos de zeolitas naturales y 150 sintéticas, para usos específicos y selectivos. La clinoptilolita es una zeolita natural y es el compuesto más extendido en el mercado médico. Objetivo: esta revisión analiza los principales campos de utilización de la zeolita. Métodos: se realizaron búsquedas en Pubmed/Medline usando los términos “zeolita” y “clinoptilolita”. Resultados y discusión: en zootecnología y medicina veterinaria la zeolita mejora la condición de la mascota, elimina los elementos radiactivos, las aflatoxinas y los venenos. En el cuidado humano, la zeolita también muestra propiedades antioxidantes, de blanqueamiento, homeostáticas y antidiarreicas. Sin embargo, los estudios clínicos que se han llevado a cabo hasta ahora como adyuvante en inmunodeficiencia y tras la quimioterapia y la radioterapia en oncología son muy escasos. Conclusiones: se requieren con urgencia otras investigaciones clínicas después de esta publicación del artículo que actualicen el estado de la técnica.

  14. [Hypertrophic pachymeningitis secondary to IgG4-related disease: case report and review of the literature].

    PubMed

    Rodríguez-Castro, Emilio; Fernández-Lebrero, Aida; López-Dequidt, Iria A; Rodríguez-Osorio, Xiana; López-González, Francisco J; Suárez-Peñaranda, José M; Arias, Manuel

    2015-10-01

    Introduccion. La paquimeningitis hipertrofica es un trastorno infrecuente que produce un engrosamiento focal o difuso de la duramadre. Puede ser idiopatica o secundaria a procesos infecciosos, autoinmunes o neoplasicos. La recientemente descrita 'enfermedad relacionada con IgG4' podria ser la causa de bastantes cuadros considerados criptogenicos. Caso clinico. Mujer de 54 años, con historia de asma bronquial, que consulto por cefalea, vertigo y perdida de audicion por su oido izquierdo. En la resonancia magnetica cerebral con gadolinio se objetivo engrosamiento y realce dural, que se extendia desde la pared lateral del seno cavernoso izquierdo y la parte medial del lobulo temporal al angulo pontocerebeloso y parte del tentorio homolaterales. El liquido cefalorraquideo presentaba 10 leucocitos/µL (90% mononucleares), con 1 g/L de proteinas y sin consumo de glucosa. El estudio anatomopatologico mostro fibrosis y un infiltrado linfoplasmocitario, con 16 celulas plasmaticas IgG4+ por campo de gran aumento. El resto de estudios analiticos y microbiologicos resultaron normales o negativos. La tasa plasmatica de IgG4 estaba dentro de los limites normales. Tratada con esteroides, se produjo mejoria clinica acompañada de la practica desaparicion de las alteraciones detectadas en la neuroimagen. Conclusiones. La paquimeningitis hipertrofica como manifestacion de la enfermedad relacionada con IgG4 puede diagnosticarse basandose en los hallazgos de la resonancia magnetica si la IgG4 plasmatica esta elevada. En casos dudosos, habra que recurrir a la biopsia meningea. La corticoterapia suele ser eficaz y representa la primera linea terapeutica.

  15. A non-canonical peptide synthetase adenylates 3-methyl-2-oxovaleric acid for auriculamide biosynthesis

    PubMed Central

    Braga, Daniel; Hoffmeister, Dirk

    2016-01-01

    Auriculamide is the first natural product known from the predatory bacterium Herpetosiphon aurantiacus. It is composed of three unusual building blocks, including the non-proteinogenic amino acid 3-chloro-L-tyrosine, the α-hydroxy acid L-isoleucic acid, and a methylmalonyl-CoA-derived ethane unit. A candidate genetic locus for auriculamide biosynthesis was identified and encodes four enzymes. Among them, the non-canonical 199 kDa four-domain nonribosomal peptide synthetase, AulA, is extraordinary in that it features two consecutive adenylation domains. Here, we describe the functional characterization of the recombinantly produced AulA. The observed activation of 3-methyl-2-oxovaleric acid by the enzyme supports the hypothesis that it participates in the biosynthesis of auriculamide. An artificially truncated version of AulA that lacks the first adenylation domain activated this substrate like the full-length enzyme which shows that the first adenylation domain is dispensable. Additionally, we provide evidence that the enzyme tolerates structural variation of the substrate. α-Carbon substituents significantly affected the substrate turnover. While all tested aliphatic α-keto acids were accepted by the enzyme and minor differences in chain size and branches did not interfere with the enzymatic activity, molecules with methylene α-carbons led to low turnover. Such enzymatic plasticity is an important attribute to help in the perpetual search for novel molecules and to access a greater structural diversity by mutasynthesis. PMID:28144348

  16. [ASSOCIATION OF OLFACTORY SENSITIVITY WITH ENERGY INTAKE: ROLE IN DEVELOPMENT OF OBESITY].

    PubMed

    Valladares Vega, Macarena; Obregón Rivas, Ana Maria

    2015-12-01

    La obesidad se produce por un desequilibrio entre la energía consumida y el gasto de energía generado. Dentro de los factores que regulan la ingesta no homeostática se encuentra el sentido del olfato, que constituye una importante señal externa que induce la ingesta de alimentos. Los humanos lo utilizan para apreciar la palatabilidad de los alimentos y, en general, para seleccionar alimentos. Materiales y método: se realizó una búsqueda electrónica de artículos en las bases de datos de Pubmed y Scielo, donde se utilizaron las palabras claves: “olfato”, “ingesta energética” y “obesidad”; adicionalmente se sumaron los siguientes límites para restringir la exploración: “animales”, “humanos”, “ensayo clínico” y “metaanálisis”. Resultados: el estado de hambre individual esta modulado por la sensibilidad olfatoria, donde se observa que la sensibilidad del olfato aumenta frente a un estado de ayunas. Existen dos hormonas que han permitido relacionar el sentido del olfato con la ingesta energética: orexina, que aumenta la sensibilidad olfativa y la ingesta, y leptina, que disminuye la sensibilidad olfativa y la ingesta. Las personas obesas con IMC > 45 presentan baja sensibilidad olfativa, situación que no varía después de la cirugía bariátrica. Conclusiones: determinar la relación entre el olfato, la ingesta energética y la obesidad es un campo escasamente estudiado y que abre nuevos caminos para el tratamiento de patologías en las que existen trastornos alimentarios como la obesidad. A futuro es necesario la realización de ensayos clínicos que permitan determinar la causalidad entre ambas variables, así como estudios moleculares para comprender mejor las señales que relacionan el olfato con la ingesta energética.

  17. Precessão do jato de 3C120: simulações hidrodinâmicas 3D

    NASA Astrophysics Data System (ADS)

    Caproni, A.; de Gouveia dal Pino, E. M.; Abraham, Z.; Raga, A. C.

    2003-08-01

    Observações com técnicas de interferometria com longa linha de base têm mostrado a existência de um jato relativístico com componentes superluminais na região central de 3C 120. Estas componentes são ejetadas em distintas direções no plano do céu e com diferentes velocidades aparentes. Estas características foram interpretadas em trabalhos anteriores como efeitos da precessão do jato relativístico. Neste trabalho, realizamos simulações tri-dimensionais do jato de 3C 120 utilizando os parâmetros de precessão determinados em trabalhos anteriores e variando as características iniciais do jato e meio ambiente, tais como densidade numérica e temperatura. Todas as simulações foram feitas com o código hidrodinâmico YGUAZÚ-A, assumindo-se um jato adiabático descrito por uma equação de estado relativística. Pelo fato de estarmos utilizando um código hidrodinâmico, nós assumimos que a intensidade do campo magnético e a distribuição de partículas, necessários para se calcular a emissão sincrotron, são proporcionais à pressão hidrodinâmica. Comparação entre dois cenários distintos, nos quais o material do jato é ejetado com velocidade constante (jato contínuo) e com velocidade modulada por um padrão sinusoidal no tempo (jato intermitente), é apresentada e discutida. Para jatos que apresentam fenômenos de precessão e intermitência, com amplitude de variação na velocidade de injeção maior que dez por cento da velocidade média de injeção, a hipótese balística, controlada pela intermitencia, é mais provável. Por outro lado, para jatos com precessão mas sem intermitência (ou com amplitude de variabilidade em velocidade mais baixa que no caso anterior), o efeito da precessão na morfologia do jato não é desprezível. Portanto, de um modo geral, ambos efeitos (precessão e movimentos balísticos) devem estar concorrendo para afetar a morfologia dos jatos superluminais.

  18. Qual o Papel da Escola e da Mídia na Obtenção dos Conhecimentos Astronômicos?

    NASA Astrophysics Data System (ADS)

    da Cunha, W. S.; Voelzke, M. R.; Amaral, L. H.

    2007-08-01

    É amplamente reconhecido que as pessoas em geral têm grande fascínio e interesse pela Astronomia. Por outro lado, o conteúdo dessa área incluído no ensino formal está longe de ser abrangente e suficiente para suprir a demanda. Esse interesse permite aperfeiçoar a divulgação e o ensino não formal de Astronomia através da mídia aliando a adequação do conteúdo à expectativa das pessoas. A reforma do Currículo Básico da Escola Pública da maioria dos Estados brasileiros tem introduzido Astronomia desde a pré-escola até o Ensino Médio. Num estudo realizado com 1180 alunos do Ensino Médio de seis escolas estaduais, revelou-se através da aplicação de um formulário contendo questões que abordavam conhecimentos básicos em Astronomia, como foram adquiridos tais conhecimentos e à infra-estrutura da escola. Para 66,1% dos entrevistados o professor já fez alguma apresentação a respeito de Astronomia. O presente estudo revelou também que 54,4% dos alunos entrevistados adquiriram seus conhecimentos astronômicos na escola, 18,4% através da televisão e 27,1% afirmaram que seus conhecimentos foram obtidos através de outros tipos de mídia (internet, livros didáticos, filmes e revistas). Embora o estudo revele claramente que há certo equilíbrio no meio em que os alunos obtiveram seus conhecimentos astronômicos, a mídia busca não somente sua difusão, mas a disponibilização desse conhecimento de maneira correta, que às vezes, não é atingido, apresentando conceitos sem fundamentação e incorretos. Por outro lado, no dia-a-dia escolar, é comum encontrar professores que vêm para as aulas com concepções prévias, que podem diferir substancialmente das idéias a serem ensinadas, dificultando o aprendizado de futuros conceitos científicos. Uma avaliação criteriosa, avaliando as dificuldades dos professores em determinar o sentido correto dos conceitos e observando a metodologia que utilizam no ensino, poderá proporcionar uma melhor

  19. Grupos españoles de cálculos ab initio de moléculas de interés astrofísico

    NASA Astrophysics Data System (ADS)

    Yáñez, M.

    Pocos campos de la química están tan bien adaptados a la modelización por medio de los métodos teóricos de la Química Cuántica como la Astroquímica y la Química de la Atmósfera, donde las interacciones moleculares son, generalmente, lo suficientemente pequeñas para que el modelo de molécula aislada funcione muy bien. En España son varios los grupos teóricos que dedican su esfuerzo de investigación, o parte de él, al estudio de moléculas o procesos de interés en Astrofísica o en atmósferas planetarias. Presentaremos diferentes ejemplos paradigmáticos de esta actividad en la que se exploran desde aspectos estructurales, hasta aspectos espectroscópicos y dinámicos. Entre los últimos, cabe destacar estudios en los que se demuestra la importancia de procesos a dos estados, prohibidos por espín, en la formación astrofísica de diversos derivados de interés. En el tratamiento espectroscópico se han hecho esfuerzos interesantes, que han aunado teoría y experimento, en el estudio de sistemas relevantes desde el punto de vista atmosférico, como los hidratos de ácido nítrico, o el tratamiento espectroscópico de moléculas no rígidas. No menos interesantes son los estudios de fotoabsorción de radicales o de procesos multifotónicos. Son particularmente abundantes los estudios dedicados a la reactividad específica de sistemas de interés astrofísico o atmosférico, con el objetivo de esclarecer vías de formación de determinados compuestos o de proporcionar mecanismos que permitan identificar las etapas reactivas limitantes de reacciones de interés en esos medios y sobre los que no existía información previa. Así, por ejemplo, se han publicado interesantes estudios sobre la formación o propiedades de compuestos de fósforo, de silico o de azufre o sobre mecanismos de reacción en los que intervienen el ozono, el radical nitrato, el radical OH u otras especies. Finalmente, son también particularmente relevantes los estudios que varios

  20. Resting energy expenditure; assessment methods and applications.

    PubMed

    Blasco Redondo, Raquel

    2015-02-26

    El gasto energético total diario de un individuo (GETD) representa la energía que el organismo consume. Está constituido por la suma de: tasa metabólica basal (TMB), termogénesis endógena (TE) y gasto energético ligado a la actividad física (GEAF). La determinación del GETD considerando la actividad física y el estado de salud de una persona, es muy importante para ajustar el cálculo de la necesidad nutricional para cada individuo. La TMB es la mínima cantidad de energía que un organismo requiere para estar vivo. Constituye del 60 al 70% del GETD en la mayoría de los adultos sedentarios, en tanto, en los individuos físicamente muy activos es de aproximadamente el 50%. Varía dependiendo de la composición corporal, especialmente de la masa corporal magra. El metabolismo basal expresado como TMB, es diferente a la tasa metabólica en reposo (TMR) o Gasto Energético en Reposo (GER); este último se obtiene cuando la determinación se hace en reposo y en las condiciones descritas para la TMB pero no en ayuno, incluyendo por tanto la energía utilizada para el aprovechamiento biológico de los alimentos. Habitualmente, el GER se determina por medio de diferentes técnicas como la calorimetría indirecta, la bioimpedancia eléctrica, el agua doblemente marcada, las ecuaciones predictivas, entre otras. Estos métodos son utilizados en la práctica clínica y en estudios científicos. Sin embargo, debido a la inconsistencia de los resultados de estas investigaciones, todavía no hay un consenso respecto a su aplicabilidad aunque la evidencia señala que la medición del consumo de oxígeno, es el método de mayor precisión. Objetivos: Esta revisión tiene como objetivo exponer los componentes del gasto energético en reposo, así como las técnicas para su determinación y estimación, señalando sus ventajas, limitaciones y aplicaciones prácticas. Resultados: Parte de las técnicas de evaluación del gasto energético descritas en esta revisión, quedan

  1. 76 FR 26959 - Airworthiness Directives; Embraer-Embraer-Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-10

    ... Aeron utica S.A., Phenom Maintenance Support, Av. Brig. Faria Lima, 2170, Sao Jose dos Campos-- SP, CEP... Empresa Brasileira de ] Aeron utica S.A., Phenom Maintenance Support, Av. Brig. Faria Lima, 2170, Sao...

  2. 77 FR 65144 - Airworthiness Directives; Embraer S.A. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-25

    ... Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170--Putim--12227-901 S o Jose dos Campos--SP... Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170--Putim--12227-901 S o Jose dos...

  3. Webbing of the fingers or toes

    MedlinePlus

    ... Carpenter syndrome Cornelia de Lange syndrome Pfeiffer syndrome Smith-Lemli-Opitz syndrome Use of the medicine hydantoin ... Jones KL, Jones MC, Del Campo M, eds. Smith's Recognizable Patterns of Human Malformation . 7th ed. Philadelphia, ...

  4. The Author and His Work

    ERIC Educational Resources Information Center

    Spain Today, 1972

    1972-01-01

    Critical evaluation and biographical comments on contemporary Spanish authors Arcadio de Larrea Palacin, Leopoldo de Luis, Andres Bosch, Condesa de Campo Alange, Gonzalo Torrente Ballester, and Juan Rof Carballo. (DS)

  5. 2. Historic American Buildings Survey F. D. Nichols, Photographer August ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. Historic American Buildings Survey F. D. Nichols, Photographer August 1936 VIEW LOOKING SOUTHEAST SHOWING CAMPO SANTO WALL (RESTORED) - Chapel of Padre Antonio Jose Martinez, Garden of Irving Couse, Taos, Taos County, NM

  6. Proceedings of the Annual Conference of the Military Testing Association Held in San Diego, California on 26-29 October 1992. Volume 2

    DTIC Science & Technology

    1992-10-29

    Total Army Personnel Command Henry H. Busclgilo U.S. Army Research Institute Introduction A number of Project A spatial tests - Assembling Objects...1029. 569 I ’/ / ASSESSING THE COACHABILIITY OF PROJECT A SPATIAL TESTS: EMPIRICAL RESULTS’ Henry H. Busciglio U. S. Army Research Institute...ability to control one’s emotions has been seen as a hallmark of personal and social development ( Campos , Campos , & Barrett, 1989; Kopp, 1989; McCoy

  7. Area Assessment: Peru.

    DTIC Science & Technology

    1985-09-24

    by former Secretary General and 1980 APRA presidential candidate Armando Villanueva del Campo , as well as outgoing Trujillo mayer Jorge Torres...Mario Vargas Llosa, Albredo Bryce Enchenique, and Julio Ramon Ribeyro contributed to the Latin American literary boon, achieving an international... Campo . Decisively defeated in the 1980 balloting, .. . the party subsequently split into a left-wing faction headed by Villanueva and a right-wing

  8. The United States and Brazil: Opening a New Dialogue,

    DTIC Science & Technology

    1984-01-01

    and the Banco do BrasH. These banks thus transfer the funds from the Treasury to pay the deficits.20 Brazil’s former Planning Minister, Roberto Campos ...regulation referred to by Roberto Campos is called dirigismo (practice of economic di- rection by the state) by those Brazilians in the field of econom...Dutra Social Democratic 1946-1951 Get~lio Vargas Brazilian Labor 1951-1954* Juscelino Kubtschek Social Democratic 1958-1961 J91nio Quadros Nati. Demo

  9. JPRS Report, Latin America.

    DTIC Science & Technology

    2007-11-02

    Judicial Reforms (Virgilio Barco Vargas ; EL TIEMPO, 22 May 87) 31 - a - Recent Cabinet Changes Analyzed (Rodrigo Pardo; EL TIEMPO, 24 May 87...PTB; Siqueira Campos , of the PCD [as published]; Arnaldo Prieto and Alysson Paulinelli, of the PFL; Virgilio Tavora, Lavoisser Maia, and Achiles...characteristics or social or economic demands. Its coordinators, however, are not so young: Helio Costa (Minas Gerais) and Wilson Campos (Pernambuco). The

  10. Bibliography on Cold Regions Science and Technology, Volume 53, Part 1

    DTIC Science & Technology

    1999-12-01

    dislocation den- Peng, C.H., Guiot, J., Van Campo , E., Quaternary sity) increases dramatically with the brine porosity. Discussioncenters on the physical...Microfilms order Doss, H.S., New York, City University of New York, Campos , D.T., East Lansing, Michigan State Univer- No.AADNQ-27264, Ph.D. thesis. For...Cai, Q.M., Reno, University of Nevada, 1996, 89p., Vargas , M., Cleveland, Case Western Reserve Uni- Wind factors, Bearing strength, Design criteria

  11. JPRS Report, West Europe, Reference Aid, Glossary of Acronyms and Abbreviations of Italy

    DTIC Science & Technology

    2007-11-02

    Produttrici di Energia Elettrica A.N.I.E. Associazione Nazionale Industrie Elettrotecniche ed Elettroniche A.N.I.E.P. Associazione Nazionale...Ufficio) Italiano Cambi C.A.M.E.N. Centro Applicazioni Militari Energia Nucleare C.AMM Contrammiraglio ca.mn. campo minato ca.mn.arr. campo...per l’Energia Solare compr. compratore compr. compra-vendita comp. trasmiss. compagnia trasmissione pora COMSQUALI Comando Squadriglia

  12. The Death of Socialism in Chile

    DTIC Science & Technology

    1992-06-05

    him to return. During his absence Chile was ruled by a junta lead by General Carlos Ibanez del Campo . Welcomed back in March 1925, Alessandri kept...of the Radicals, a previous agreement be made that the President come from the parties which had formed the Popular Action Front (Frente de Accion ...dictatorship of Colonel (later General) Carlos Ibanez del Campo in 1931-32. The first two were the product of divisions within the political community; the last

  13. Hydrogeologic uncertainties and policy implications: The Water Consumer Protection Act of Tucson, Arizona, USA

    NASA Astrophysics Data System (ADS)

    Wilson, L. G.; Matlock, W. G.; Jacobs, K. L.

    hecho, la diferencia de permeabilidad entre el canal aluvial y los depósitos de relleno subyacentes puede provocar descarga subyacente. Además, incluso si el Río Colorado recargase este Campo Central, el agua subterránea se salinizaría progresivamente. Las restricciones del Acta sobre el uso del agua del CAP afectan los cuatro mecanismos legales del Código de Aguas Subterráneas de Arizona de 1980 relacionados con el Área de Gestión Activa de Tucson: (a) aumento del suministro; (b) requisitos y permisos para la extracción de aguas subterráneas (c) necesidades del Plan de Gestión, particularmente la conservación obligatoria y temas de calidad de aguas; y (d) la obligación de que todas las nuevas subdivisiones usen agua con suministro renovable en lugar de subterránea. Como problemas adicionales se incluye la perturbación de las actividades políticas normales como consecuencia de las demandas para aprobar y poner en marcha el Acta.

  14. Evaluation of canine and feline leishmaniasis by the association of blood culture, immunofluorescent antibody test and polymerase chain reaction

    PubMed Central

    2014-01-01

    Background This study aimed to evaluate the occurrence of Leishmania spp. in dogs and cats from Botucatu, São Paulo state, and Campo Grande, Mato Grosso do Sul state, Brazil, by the association of three diagnostic tests: blood culture in liver infusion tryptose medium, immunofluorescent antibody test and polymerase chain reaction. Fifty blood samples of dogs and cats from the Center for Zoonosis Control in Campo Grande, an area endemic for canine visceral leishmaniasis, were collected randomly, as well as canine and feline blood samples from the Municipal Kennel and Animal Protection Association in Botucatu, currently considered a transmission-free, non-endemic area. Results Of the 50 dog blood cultures from Botucatu, three (6%) were positive and of the 50 cats, two (4%) were positive. In Campo Grande, 29 dog blood cultures (58%) were positive and all (100%) cats negative by this test. Polymerase chain reaction detected Leishmania spp. in 100% of dog and cat samples from Botucatu but found all the cats from Campo Grande to be negative. On the other hand, 36 dogs from Campo Grande were positive (72%) by the same technique. Immunofluorescent antibody test in Botucatu found 100% of dogs and cats non-reactive, while in Campo Grande, it detected positivity in 32 dogs (64%) and 15 cats (30%). Conclusions The results show the importance of not only continuous epidemiological surveillance in areas not endemic for leishmaniasis, but also research for accurate diagnosis of this zoonosis. PMID:24565284

  15. [Use of bacteriphages against Salmonella Enteritidis: a prevention tool].

    PubMed

    García, Cristina; Marín, Clara; Catalá-Gregori, Pablo; Soriano, Jose Miguel

    2015-06-01

    Introducción: la salmonelosis es una enfermedad de alta prevalencia, siendo la búsqueda de herramientas preventivas para evitar la contaminación una prioridad a nivel de salud pública. Objetivo: en el presente trabajo se evaluó el efecto in vitro de bacteriófagos frente a Salmonella enteritidis como una herramienta de prevención. Método: se realizaron dos pruebas con tres concentraciones de bacteriófagos frente a dos cepas de Salmonella enteritidis inoculadas en muestras de heces frescas de gallinas ponedoras, y el correspondiente control positivo. Así, se testaron cuatro grupos en cada una de las dos pruebas. Cada grupo experimental contó con dos réplicas, y en cada réplica se incubaron tres placas. Las concentraciones ensayadas fueron tres: solución comercial (5 × 107 pfu/mL), y dos diluciones de la misma (1/10 y 1/30). Una de las cepas testada fue la cepa CECT 4300, cepa certificada de la Colección Española de Cultivo Tipo, y la otra una cepa de campo aislada en una explotación de ponedoras sacrificadas. Ambas cepas se inocularon en muestras de heces a la dosis de 1,3 × 105 ufc/g de heces en cada uno de los cuatro grupos. Se procedió con el aislamiento e identificación de la bacteria por ISO 6579 a varios tiempos desde la inoculación: 1 minuto, 24 h y 7 días. Resultados: en la primera prueba, con la cepa certificada, se aisló Salmonella en todos los grupos a tiempo 1 minuto. A las 24 h se aisló Salmonella en todos los grupos excepto en una de las réplicas tratada con la dilución 1/10 de bacteriófagos, en una de las placas de la otra réplica tratada con la dilución 1/10, y en dos placas de cada una de las dos réplicas tratadas con la solución comercial. A partir de los 7 días ya no se aisló la bacteria de ninguno de los grupos experimentales. En la segunda prueba, con la cepa de campo, se aisló Salmonella en todos los grupos a tiempo 1 minuto. A las 24 h se aisló Salmonella en todos los grupos excepto en una de las r

  16. Impacts of Tillage, Maturity Group, and Insecticide Use on Megacopta cribraria (Hemiptera: Plataspidae) Populations in Double-Cropped Soybean.

    PubMed

    Del Pozo-Valdivia, Alejandro I; Reisig, Dominic D; Bacheler, Jack S

    2017-01-04

    Megacopta cribraria (F.), also known as the kudzu bug, is a soybean pest in the United States, and it can cause up to a 60% yield reduction if not controlled. Insecticides are commonly used to manage this pest in commercial soybean fields. However, other soybean production practices may also affect kudzu bug populations. This study investigated the effect of soil tillage, maturity group selection, and insecticide use on kudzu bug densities in soybean. During 2012 and 2013, at two locations each year in North Carolina, four varieties of soybean maturity groups were planted in June into conventionally tilled plots and into plots with cereal crop residue under reduced tillage conditions (mimicking double-crop production). Plots were further split as insecticide-protected and untreated. Four times more kudzu bugs were found in conventionally tilled than reduced till plots throughout the growing season. Selection of the maturity group influenced the attractiveness of the kudzu bug to oviposit on soybean. A 56% reduction of kudzu bug densities was achieved through insecticide treatment, with an ∼6% increase in yield. Information on how production practices, including soil tillage, affect kudzu bug populations in soybean may help growers select practices to minimize kudzu bug injury and protect yield.ResumenMegacopta cribraria (F.), conocido como el bicho del kudzu, es una plaga de la soja en los Estados Unidos que puede reducir el rendimiento hasta un 60% si no es controlado oportunamente con insecticidas en campos comerciales de soja. Sin embargo, otras prácticas de producción en la soja pueden afectar las poblaciones del bicho del kudzu. El presente estudio investigó el efecto de la labranza del campo, la selección del grupo de madurez en soja, y el uso de insecticidas en la densidad del bicho del kudzu. Durante el 2012 y el 2013, cuatro diferentes grupos de madurez de soja fueron plantados en Junio bajo el sistema tradicional de labranza y con labranza reducida

  17. A new towed platform for the unobtrusive surveying of benthic habitats and organisms

    USGS Publications Warehouse

    Zawada, David G.; Thompson, P.R.; Butcher, J.

    2008-01-01

    Los mapas de ecosistemas coralinos son necesarios para apoyar muchos objetivos de conservación y manejo, así como actividades de investigación. Algunos ejemplos incluyen comprobación de campo de imágenes aéreas y satelitales, caracterización de hábitats esenciales, determinación de cambios, y supervisión de avance de los esfuerzos de la restauración. Para tratar algunas de estas necesidades, el servicio geológico de los E.E.U.U. desarrolló el sistema de imágenes de arrecifes a lo largo de líneas (Along-Track Reef-Imaging System: ATRIS), un sensor para usar desde un bote y mapear ambientes bénticos someros. ATRIS consiste en una cámara fotográfica digital, una cámara de vídeo, y un sensor acústico de profundidad en un poste movible. Este diseño, sin embargo, restringe su uso a aguas claras de menos de 10 m de profundidad. Para superar esta limitación, desarrollamos una versión remolcada: ATRIS profundo (Deep ATRIS). El sistema se basa en un vehículo ligero, controlado por computadora y remolcado, capaz de seguir una ruta de buceo programada. El vehículo tiene 1.3 m de largo con un ancho de 63 cm y puede llevar una variedad amplia de instrumentos de investigación, incluyendo CTD, fluorómetros, y cámaras fotográficas. Deep ATRIS está equipado con una cámara fotográfica digital de alta velocidad (20 cuadros s-1), luces LED, una brújula, un sensor triaxial de orientación, y un altímetro nadir. El vehículo ajusta dinámicamente su altitud para mantener una distancia fija sobre el lecho marino. La cámara fotográfica tiene un campo visual de 29°x22° y captura imágenes a color de 1360 x 1024 pixeles. Los coordenadas del GPS se registran para cada imagen. Una conexión de Ethernet de un gigabit permite que las imágenes sean exhibidas y archivadas en tiempo real en una computadora en la superficie. Deep ATRIS tiene una velocidad máxima del remolque de 2.6 m s-1 y un límite teórico de profundidad de 27 m. Con un cable mejorado del

  18. 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.

  19. Diagnóstico y cinética de plasmas de NxOy y aire a baja presión. Aplicaciones atmosféricas

    NASA Astrophysics Data System (ADS)

    Tanarro Onrubia, Isabel

    Los procesos cinéticos que tienen lugar en plasmas de óxidos de nitrógeno y de aire presentan relevancia en diferentes campos de investigación como son los relativos al control de contaminantes atmosféricos emitidos en procesos de combustión, a su formación en las superficies de las naves supersónicas y los vehículos espaciales al entrar en la atmósfera, o a su presencia en la ionosfera terrestre. En general, los fenómenos que tienen lugar en sistemas tan alejados del equilibrio termodinámico como los plasmas luminiscentes, son capaces de originar determinadas especies intermedias y productos finales de reacción a temperaturas y presiones mucho menores que las de otros procedimientos físico-químicos; y hacen posible reproducir y caracterizar en laboratorio ciertas especies inestables y mecanismos primordiales de la alta atmósfera. Por otra parte, las técnicas de resolución temporal aplicadas a plasmas modulados en amplitud resultan notablemente más sensibles que las medidas estacionarias para estimar la relevancia de los distintos mecanismos elementales o incluso para determinar sus constantes de velocidad. En este trabajo se presenta un estudio espectroscópico y espectrométrico comparativo de plasmas de óxidos de nitrógeno y de aire a baja presión (0.001-1 mbar) generados en descargas de cátodo hueco continuas o moduladas, y se propone un modelo cinético único y relativamente sencillo, que explica satisfactoriamente los comportamientos observados en todos ellos. Dicho modelo se basa en la resolución de un sistema de ecuaciones diferenciales dependientes del tiempo, que incluye los mecanismos elementales de disociación e ionización de los precursores y los productos, reacciones homogéneas entre especies atómicas, iónicas y moleculares, y reacciones heterogéneas. Al abordar estos sistemas, se constata una gran carencia de datos experimentales o teóricos sobre secciones eficaces o constantes de velocidad para las reacciones de

  20. Inversor Resonante de Tres Elementos L-LC con Caracteristica Cortocircuitable para Aplicaciones de Calentamiento por Induccion

    NASA Astrophysics Data System (ADS)

    Espi Huerta, Jose Miguel

    Los generadores de calentamiento por induccion son puentes inversores con carga resonante, cuya mision es basicamente crear una corriente sinusoidal de gran amplitud sobre la "bobina de caldeo", que forma parte del tanque resonante. En el interior de esta bobina se introduce la pieza que se desea calentar. EI campo magnetico creado induce corrientes superficiales (corrientes de Foucault) sobre la pieza, que producen su calentamiento. Los tanques resonantes (tambien llamados osciladores) utilizados en la actualidad son el resonante serie y el resonante paralelo. Aunque ya desde hace algun tiempo se vienen construyendo generadores de alta potencia basados en estos dos osciladores, el exito nunca ha. sido completo en ninguno de los dos casos. Tal y como se explica en la introduccion de esta memoria, los puentes inversores utilizados deben operar sobre una carga inductiva (corriente retrasada) para evitar el fenomeno de la recuperacion inversa de sus diodos y la consiguiente ruptura de los transistores. De la restriccion topologica anterior se deduce que el generador paralelo debe conmutar a frecuencias inferiores a la resonancia, y el serie a frecuencias superiores. A esta restriccion topologica hay que unir otra que es exclusiva del calentamiento por induccion: La corriente por la bobina de caldeo debe ser sinusoidal. De no ser asi, resultaria imposible disponer toda la potencia de calentamiento sobre la pieza en el espesor requerido por la aplicacion. Como consecuencia, los inversores no pueden operar por debajo de la frecuencia de resonancia del oscilador, pues en ese caso se amplifican los armonicos de orden superior de la tension/corriente de entrada situados sobre la resonancia, con la consiguiente distorsion de la corriente de salida. La conjuncion de las dos restricciones anteriores obligan al inversor paralelo a funcionar a la frecuencia de resonancia del oscilador. Esto imposibilita un control por variacion de frecuencia, regulandose la potencia desde la