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Sample records for dosimetria biologica documento

  1. Biological dosimetry, scopes and limitations; Dosimetria biologica, alcances y limitaciones

    Energy Technology Data Exchange (ETDEWEB)

    Guerrero C, C.; Brena V, M. [Departamento de Biologia, Instituto Nacional de Investigaciones Nucleares, C.P. 52045 Salazar, Estado de Mexico (Mexico)

    1999-07-01

    The analysis of the aberrations in chromosomes is an alternative to establish the exposure dose to the radiation, when the information provided by the traditional physical methods is insufficient. There are diverse causes by which it can reached to apply an alternative system, such is the case of exposures of another persons to the management of radiation sources, which not carry physical dosemeter. Contrary case is to the occupational exposure personnel (OEP), what must to utilize some system for determining the exposure dose, even so can be needed the case for more information. In any case, the cells from the affected person are the alternative without the biological system be overlap to the physical, it is complementary. (Author)

  2. Calibration curves for biological dosimetry; Curvas de calibracion para dosimetria biologica

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    Guerrero C, C.; Brena V, M. [ININ, A.P. 18-1027, 11801 Mexico D.F. (Mexico)]. E-mail cgc@nuclear.inin.mx

    2004-07-01

    The generated information by the investigations in different laboratories of the world, included the ININ, in which settles down that certain class of chromosomal leisure it increases in function of the dose and radiation type, has given by result the obtaining of calibrated curves that are applied in the well-known technique as biological dosimetry. In this work is presented a summary of the work made in the laboratory that includes the calibrated curves for gamma radiation of {sup 60} Cobalt and X rays of 250 k Vp, examples of presumed exposure to ionizing radiation, resolved by means of aberration analysis and the corresponding dose estimate through the equations of the respective curves and finally a comparison among the dose calculations in those people affected by the accident of Ciudad Juarez, carried out by the group of Oak Ridge, USA and those obtained in this laboratory. (Author)

  3. Documentos

    Directory of Open Access Journals (Sweden)

    Desde el Jardín de Freud

    2016-01-01

    Full Text Available Desde el Jardín de Freud se encuentra indexada en el IBN-Publindex (Colciencias, en categoría C, y en las siguientes bases de datos y catálogos: EBSCO, ProQuest, CLASE, Latindex, Dialnet, Rebiun, Doaj, e-Revistas y Biblioteca virtual Luis Ángel Arango.

  4. Biological Dosimetry of X-rays by micronuclei study; Dosimetria Biologica de rayos-X mediante el estudio de micronucleos

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    Gomez, E.; Silva, A.; Navlet, J.

    1991-07-01

    Biological dosimetry consists of estimating absorbed doses for people exposed to radiation by mean biological methods. Several indicators used are based in haematological, biochemical an cytogenetics data, although nowadays without doubt, the cytogenetic method is considered to be the most reliable, in this case, the study of micronuclei in peripheral blood lymphocytes citokinetics blocked can be related to absorbed dose through an experimental calibration curve. An experimental dose-response curve, using micronuclei assay for X-rays at 250 kVp, 43,79 rads/min and temperature 37 degree centigree has been produced. Experimental data is fitted to model Y=C+ {alpha}D+BD''2 where Y is the number of micronuclei per cell and D the dose. The curve is compared with those produced elsewhere. (Author) 24 refs.

  5. Biological Dosimetry of X-rays by micronuclei study; Dosimetria Biologica de rayos-X mediante el estudio de micronucleos

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    Gomez, E; Silva, A; Navlet, J

    1991-07-01

    Biological dosimetry consists of estimating absorbed doses for people exposed to radiation by mean biological methods. Several indicators used are based in haematological, biochemical an cytogenetics data, although nowadays without doubt, the cytogenetic method is considered to be the most reliable, in this case, the study of micronuclei in peripheral blood lymphocytes citokinetics blocked can be related to absorbed dose through an experimental calibration curve. An experimental dose-response curve, using micronuclei assay for X-rays at 250 kVp, 43,79 rads/min and temperature 37 degree centigree has been produced. Experimental data is fitted to model Y=C+ {alpha}D+BD''2 where Y is the number of micronuclei per cell and D the dose. The curve is compared with those produced elsewhere. (Author) 24 refs.

  6. Um documento interessante de 1930

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    Irina Vassilieff

    1977-09-01

    Full Text Available (primeiro parágrafo do texto No decorrer das pesquisas de campo que estamos realizando em Varpa, a fim de instrumentar uma eventual monografia de Mestrado, topamos com o original de uma ata de eleição realizada a 1 de março de 1930. Trata-se de um documento que, salvo melhor juizo, poderia ser uma janela, se bem que modesta, aberta aos estudiosos de um vetor das instituições políticas brasileiras. E, ao veiculá-lo, abstemo-nos tanto de uma análise ideológica como de uma exercitação metodológica, limitando-nos apenas à simples localização, no esquema tradicional, de uma transcrição acompanhada de comentários.  O documento está arquivado na própria colônia de Varpa, que se localiza a 439 quilômetros da Capital do Estado de São Paulo em linha reta, e a 17 quilômetros de Tupã, à margem direita do rio do Peixe, constituindo atualmente um dos distritos do município de Tupã.

  7. Informes y documentos de Trabajo

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    Humlebæk, Carsten

    El propósito de este artículo es reflexionar y proponer hipótesis explicativas a las dificultades de la izquierda para articular un discurso nacionalista español. El trabajo se enmarca dentro del proyecto “Nacionalismo español: discursos y praxis desde la izquierda (1982-2008)” financiado por el ...... forma apriorística. Finalmente, este documento es el armazón teórico sobre el que se pretende ensamblar una de las publicaciones finales del proyecto: el libro que resuma los hallazgos y las aportaciones principales de nuestra investigación al conocimiento de la realidad española....

  8. Preparación del documento (2011)

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    Biblioteca Universitaria. Unidad de Proceso Técnico

    2011-01-01

    Revisado en: Preparación del documento (2018) [http://hdl.handle.net/10045/73527] Establecer los pasos a seguir para completar el proceso técnico de los documentos, en concreto la preparación física de éstos, antes de su colocación en los estantes y de su puesta a disposición de la comunidad universitaria.

  9. Preparación del documento (2018)

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    Biblioteca Universitaria. Unidad de Proceso Técnico

    2018-01-01

    Revisión de: Preparación del documento (2011) [http://hdl.handle.net/10045/20878] Establecer los pasos a seguir para completar el proceso técnico de los documentos, en concreto la preparación física de éstos, antes de su colocación en los estantes y de su puesta a disposición de la comunidad universitaria.

  10. Plantilla 1: El documento audiovisual: elementos importantes

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    Alemany, Dolores

    2011-01-01

    Concepto de documento audiovisual y de documentación audiovisual, profundizando en la distinción de documentación de imagen en movimiento con posible incorporación de sonido frente al concepto de documentación audiovisual según plantea Jorge Caldera. Diferenciación entre documentos audiovisuales, obras audiovisuales y patrimonio audiovisual según Félix del Valle.

  11. Raro y extraño documento

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    Jaime Paredes Pardo

    1979-12-01

    Full Text Available En la historia de la Gobernación de Popayán de Jaime Arroyo, se encuentra un documento de gran interés que data de la época de los Pizarras, y el cual fue escrito en apoyo de la revuelta de Gonzalo, quien asumió el mando del Perú a la muerte de su hermano. Se le atribuye al maese de campo Francisco de Carvajal, hombre de confianza de los famosos hermanos que terminaron pagando con sangre su temeridad.

  12. Biological dosimetry after criticality accidents. Intercomparison exercise in the Silene Reactor - France; Dosimetria biologica en accidentes de criticidad. Ejercicio de intercomparacion en el Reactor Silene - Francia

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    Di Giorgio, Marina; Vallerga, Maria B; Taja, Maria R [Autoridad Regulatoria Nuclear, Buenos Aires (Argentina); arn gov ar, E-mail: mdigiorg@cae

    2004-07-01

    The Institute of Radiation Protection and Nuclear Safety Institute (IRSN) organized an international biological dosimetry intercomparison, at the SILENE experimental reactor (Valduc, France), simulating different criticality scenarios: bare source 4 Gy, lead shield source 1 and 2 Gy and gamma pure {sup 60}Co source 2 Gy. Fifteen laboratories were involved in this exercise, including the Argentine Biological Dosimetry Laboratory. The purposes of the intercomparison were: 1) To compare the unstable chromosome aberration (UCA) frequency observed by the different laboratories; and 2) To compare the dose estimation for gamma rays and neutrons. The objects of the present work were: I) To compare the mean frequency of UCA observed by the Argentine laboratory with the mean frequency observed by the participant laboratories as a whole. II) To compare the dose estimates performed by the Argentine lab with those estimated by the other laboratories involved in the second stage of the intercomparison. Overall, the mean frequencies of UCA and the correspondent 95% confidence limits obtained by the Argentine lab were consistent with the results obtained by the laboratories as a whole. For the gamma pure scenario, smaller variations were observed among laboratories in terms of dose (CV=18,2%) than in terms of frequency (CV=30,1%). For the mixed field scenarios, only four laboratories, including the Argentine lab, estimated gamma and neutron components of the total dose and just two (Argentine lab and lab 12) were in agreement with the given physical doses. The 1 Gy experiment presented lesser variations both in terms of frequency and dose than the other two scenarios. For the 4 and 2 Gy experiments, variations in neutron dose were more significant than variations in gamma dose, related to the magnitude of the dose. The results suggest that intercomparison exercises jointly with the accreditation of biological dosimetry by cytogenetic service laboratories, in compliance with ISO/IEC 17025, would allow to unify the protocols applied regarding: techniques, metaphase selection and scoring process. Thus, the dosimetric response in accidental overexposures that would require cooperation among countries, will be improved. (author)

  13. Biological dosimetry of ionizing radiation by chromosomal aberration analysis; Dosimetria biologica de las radiaciones ionizantes mediante el analisis de aberraciones cromosomicas

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    Gonzalez-Castano, S.; Silva, A.; Navlet, J.

    1990-07-01

    Biological dosimetry consists of estimating absorbed doses for people exposed to radiation by mean biological methods. Several indicators used are based in haematological, biochemical, and cytogenetic data, although nowadays without doubt, the cytogenetic method is considered to be the most reliable. In this case, the study ol chromosomal aberrations, normally dicentric chromosomes, in peripheral lymphocytes can be related to absorbed dose through an experimental calibration curve. An experimental dose-response curve, using dicentric chromosomes analysis, X-rays at 300 kVp, 114 rad/min and temperature 37 degree celsius has been produced. Experimental data is fitted to model Y ={alpha} + {beta}{sub 1}D + {beta}{sub 2}D 2 , where Y is the number of dicentrics per cell and D the dose. The curve is compared with those produced elsewhere. (Author) 14 refs.

  14. Biological dosimetry of patients with differenced carcinoma of thyroid treated with Iodine-131; Dosimetria biologica de pacientes con carcinoma diferenciado de tiroides tratados con Iodo-131

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    Vallerga, M. B.; Rojo, A.M.; Taja, M.R.; Deluca, G.; Di Giorgio, M. [Autoridad Regulatoria Nuclear Av. Del Libertador 8250 (C1429BNP). Buenos Aires (Argentina); Fadel, A. [Hospital General de Agudos Dr. Carlos Durand Av. Diaz Velez 5044. Buenos Aires (Argentina); Cabrejas, M.; Valdivieso, C. [Hospital de Clfnicas Jose de San Martin Av. Cordoba 2351 (CP1120). Buenos Aires (Argentina)]. e-mail: mvallerg@cae.arn.gov.ar

    2006-07-01

    The administration of I-131 to patient with Differentiated Thyroid Carcinoma (CaDiT) it is used inside the therapeutic outline as later step to the thyroidectomy. However, the good activity to give is of difficult determination due to factors such as, the variability in the capacity of tumoral reception of the I-131, distribution of the pharmaceutical, physiologic status, other associate pathologies, grade of advance of the illness, and previous treatments. Additionally, the activity to administer is dependent of the dose of tolerance in the healthy tissues; superior dose to 2 Gy in bone marrow, its could drive to myelotoxicity. At the moment, the form more extended of administration it is the empiric prescription that considers clinical parameters and of laboratory for their determination. Presently work, the protocol of applied treatment incorporates the evaluation for internal dosimetry and biological dosimetry to estimate absorbed dose in bone marrow. The biological estimate of the dose of these patients is based on the quantification of chromosomal aberrations whose frequency is referred to a curve-dose response in which the lymphocytes is irradiated in vitro with I-131, allowing to determine the in vivo dose to the patient's circulating lymphocytes. The objective of the present work is to determine the applicability of different cytogenetic essays in the estimate of the absorbed dose to the whole body or specific organs. Three patients were evaluated with CaDiT. Their treatment protocol consisted on a tracer administration of radioactive iodine of 74 - 111 MBq (2 - 3 mCi) and a therapy 7,4 - 11,1 GBq (200 - 300 mCi). Previous to the tracer administration and 8 days post-therapeutic administration took samples of veined blood that were evaluated by biological dosimetry by means of the application of the techniques: conventional cytogenetic Micronucleus and FISH (Hybridization in situ by Fluorescence). Starting from the frequencies of observed chromosomal aberrations it was considered absorbed dose to whole body. The obtained doses were compared by the different biological methods used. The evaluation by internal dosimetry of the data obtained tracer post-activity allowed to personalize the activity of I-131 to administer, starting from physical-mathematical models that consider the particular biokinetics of each patient (MIRD methodology). The doses estimated by the used biological dosemeters were consistent among them. It was discussed its scopes and limitations to be applied in the validation of the dosimetric estimation based on models, in order to administer a therapeutic dose protecting the patient of the adverse effects of the internal radiotherapy in organs that are not target of the same one. The acquired experience is considered of utility to give answer in cases of radioiodine incorporation in occupationally exposed personnel. (Author)

  15. Chromosomal analysis and application of biological dosimetry in two cases of apparent over exposure; Analisis cromosomico y aplicacion de la dosimetria biologica en dos casos de aparente sobreexposicion

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    Guerrero C, C.; Brena V, M. [Departamento de Biologia, ININ A.P. 18-1027, 11801 Mexico D.F. (Mexico)

    2002-07-01

    The gamma radiation calibration curve of {sup 60} Co is used which was generated in the ININ Laboratory of Biology to calculate the exposure dose of two workers whose dosemeters marked values above of the limit allowed. The analysis indicates that in a first case, the aberrations frequency corresponded to the basal value, therefore there is not over exposure. The aberrations frequency of the second case is lightly above to the basal value and therefore the probability favors to what the physical dosimetry indicates. (Author)

  16. Detección de lenguaje sexista en documentos

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    RAMOS TALENS, PAU

    2018-01-01

    [ES] Este trabajo presenta un estudio basado en modelos de clasificación automática, con el objetivo de distinguir frases sexistas dentro de documentos, especialmente documentos públicos. Se han creado y entrenado diferentes modelos de clasificación a partir de un corpus extraído directamente de documentos oficiales. [EN] This research work presents an activity based on automatic classification models, focused on distinguish sexist sentences from documents, in special for publi...

  17. Hiperlipidemia familiar combinada: documento de consenso

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    Pedro Mata

    2014-10-01

    Es frecuente la asociación con diabetes mellitus tipo 2, hipertensión arterial y obesidad central. Los pacientes con HFC se consideran de riesgo cardiovascular alto y el objetivo terapéutico es un colesterol-LDL < 100 mg/dl, y < 70 mg/dl en presencia de enfermedad cardiovascular establecida o diabetes mellitus. Los pacientes con HFC requieren tratamiento con estatinas potentes y, a veces, tratamiento combinado. La identificación y el manejo de otros factores de riesgo cardiovascular, como la diabetes y la hipertensión, son fundamentales para reducir la carga de enfermedad cardiovascular. Este documento proporciona recomendaciones para el diagnóstico y el tratamiento integral de los pacientes con HFC especialmente dirigidas a médicos de atención primaria.

  18. Suministro de documentos: costes y precios

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    Vázquez Valero, M.

    1995-03-01

    Full Text Available Direct and indirect costs produced by the document supply, both for reproduction and loan, are examined together with possible financing options, their advantages and disadvantages. After describing the current legal situation of public services charges in Spain, the maximum and minimum fees for interlending activities of about 500 Spanish libraries are presented. The data emphasize the need of coordination between libraries in order to unify both fees and methods of request and payment.

    Se examinan los costes directos e indirectos generados en el suministro de documentos primarios, tanto en el caso de reproducción como de préstamo, así como las posibles opciones que se pueden establecer para la financiación de dichos costes, indicando las ventajas e inconvenientes de cada una de ellas. Después de exponer la normativa legal vigente sobre el cobro de servicios públicos, se recoge en una tabla la gama de valores máximos y mínimos en la que oscilan las tarifas aplicadas por unas 500 bibliotecas españolas. Los datos aportados destacan la necesidad de coordinación entre esas bibliotecas, a fin de homogeneizar tanto las tarifas como las modalidades de pago y petición.

  19. Analysis of the organic horticultural market in Lazio; Analisi della filiera ortofrutticola biologica del Lazio

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    Letardi, A [ENEA, Divisione Biotecnologie e Agricoltura, Centro Ricerche Casaccia, Rome (Italy); Lumaca, P [Centro Ecologico di Dimostrazione Agraria, Rome (Italy); Grandi, C; Dominicis, L [Centro Ecologico di Dimostrazione Agraria/Associazione Italiana per l' Agricoltura Biologica, Lazio, Rome (Italy)

    2001-07-01

    In 1998 Agriculture and Biotechnology Division of ENEA (BIOAG), Ecological Centre for Extension Service (CEDA), and Italian Association for Biological Agriculture (AIAB) established a research collaboration on the limiting factors that regulate marketing of fresh biological products. Field research was carried out, starting at the end 1998 to 1999, on horticultural production, mainly by means a fellowship in agriculture factors that regulate marketing of fresh biological products. Results and conclusion of the study focuses critical steps regulating productions, transformation and distribution of biological agriculture and could be associated to general situation of this sector in Italy. Moreover attention should be put on the rapid evolution of this sector in the last months, with respect to research time duration, i.e., 1998-1999 years, because of food safety emergencies and legislative innovations issued by European Commission. [Italian] Nel 1998 una lunga collaborazione tra ricercatori della Divisione Biotecnologie ed Agricoltura dell'ENEA, del Ceda (Centro Ecologico di Dimostrazione Agraria) e dell'AIAB (Associazione Italiana per l'Agricoltura Biologica), grazie all'apporto finanziario di un imprenditore privato interessato allo sviluppo del settore, produsse un bando di concorso per una borsa di formazione e studio sperimentale per laureato in agraria con specializzato in materie economiche. Grazie a tale borsa e' stata realizzata, tra la fine del 1998 e il 1999, una indagine sulla filiera agroalimentare biologica del Lazio, finalizzata all'analisi dei punti critici che limitavano i segmenti della commercializzazione e della distribuzione del prodotto fresco. Nella discussione su principali problemi per lo sviluppo dell'agricoltura biologica in Italia, ed in particolare nel Lazio, tra i ricercatori delle strutture sopra menzionate era emersa infatti una carenza di dati sperimentali certi che potessero supportare una serie di considerazioni gia' da noi

  20. Nuevos documentos sobre Rojas Zorrilla y su teatro

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    Madroñal, Abraham

    2007-06-01

    Full Text Available This article contains twelve unpublished documents on Rojas Zorrilla, related to his biography and literary works (comedias and autos sacramentales. The majority are handwritten by the poet himself, and they provide new information relevant to our knowledge of his life and to the understanding of his works.Se publican una docena de documentos inéditos sobre Rojas Zorrilla referidos a su biografía y a algunas comedias y autos. En buena parte dichos documentos son autógrafos del poeta y añaden o matizan informaciones concretas sobre él y sus obras.

  1. Analysis of the organic horticultural market in Lazio; Analisi della filiera ortofrutticola biologica del Lazio

    Energy Technology Data Exchange (ETDEWEB)

    Letardi, A. [ENEA, Divisione Biotecnologie e Agricoltura, Centro Ricerche Casaccia, Rome (Italy); Lumaca, P. [Centro Ecologico di Dimostrazione Agraria, Rome (Italy); Grandi, C.; Dominicis, L. [Centro Ecologico di Dimostrazione Agraria/Associazione Italiana per l' Agricoltura Biologica, Lazio, Rome (Italy)

    2001-07-01

    In 1998 Agriculture and Biotechnology Division of ENEA (BIOAG), Ecological Centre for Extension Service (CEDA), and Italian Association for Biological Agriculture (AIAB) established a research collaboration on the limiting factors that regulate marketing of fresh biological products. Field research was carried out, starting at the end 1998 to 1999, on horticultural production, mainly by means a fellowship in agriculture factors that regulate marketing of fresh biological products. Results and conclusion of the study focuses critical steps regulating productions, transformation and distribution of biological agriculture and could be associated to general situation of this sector in Italy. Moreover attention should be put on the rapid evolution of this sector in the last months, with respect to research time duration, i.e., 1998-1999 years, because of food safety emergencies and legislative innovations issued by European Commission. [Italian] Nel 1998 una lunga collaborazione tra ricercatori della Divisione Biotecnologie ed Agricoltura dell'ENEA, del Ceda (Centro Ecologico di Dimostrazione Agraria) e dell'AIAB (Associazione Italiana per l'Agricoltura Biologica), grazie all'apporto finanziario di un imprenditore privato interessato allo sviluppo del settore, produsse un bando di concorso per una borsa di formazione e studio sperimentale per laureato in agraria con specializzato in materie economiche. Grazie a tale borsa e' stata realizzata, tra la fine del 1998 e il 1999, una indagine sulla filiera agroalimentare biologica del Lazio, finalizzata all'analisi dei punti critici che limitavano i segmenti della commercializzazione e della distribuzione del prodotto fresco. Nella discussione su principali problemi per lo sviluppo dell'agricoltura biologica in Italia, ed in particolare nel Lazio, tra i ricercatori delle strutture sopra menzionate era emersa infatti una carenza di dati sperimentali certi che potessero supportare una serie di

  2. Investigaccion-accion en la sala de clases sobre las creencias de la cultura de la ciencia de un grupo de estudiantes universitarios y su relacion reciproca con el aprendizaje de las ciencias biologicas

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    Cordova-Santiago, Lizzette Astrid

    La investigacion---accion que se llevo a cabo en la sala de clases tenia como punto de partida las creencias de la cultura de la ciencia de un grupo de estudiantes universitarios para luego examinar sus implicaciones en el proceso de aprendizaje de las Ciencias Biologicas. ¿Que se supone que hagan las creencias en relacion con el aprendizaje? ¿En que consiste incorporar este aspecto a la practica educativa universitaria? Utilizando el modelo de Kemmis y McTaggart (1987) la investigacion-accion se planteo como un proceso dinamico en cuatro momentos en espiral constituidos por la planificacion, la accion, la observacion y la reflexion. Cada una de las fases tuvo una intencion retrospectiva y prospectiva formando una espiral de autorreflexion del conocimiento y la accion. Se llevaron a cabo audio grabaciones en clases y analisis de documentos. Ademas, la profesora-investigadora hizo un portafolio para reflexionar sobre las creencias de la cultura de la ciencia que tienen los estudiantes y las creencias del aprendizaje que tiene la profesora y sobre como la comprension de estos elementos ayudo a mejorar su practica educativa a traves del tiempo. Los resultados obtenidos apuntan a que las creencias de la cultura de la ciencia que tiene el grupo de estudiantes son diversas. Ellos si creen que la ciencia tiene una cultura la cual describieron como: complicada y desconocida que evoluciona constantemente, que es un conjunto de metodos, que es altamente tecnologica, que resuelve problemas de salud, ayuda a interpretar la realidad del mundo que los rodea y su origen y que existen unas intersecciones entre la ciencia y el poder. Sobre las creencias del proceso de aprendizaje de la profesora-investigadora, estas senalan que el modelaje de actores, la vision de la academia que tiene ella asi como la participacion y negociacion entre todos los involucrados en el proceso educativo, son factores que inciden en el proceso de aprendizaje.

  3. Los filtros de accesibilidad a los documentos públicos

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    Enrique Pérez Herrero

    2013-11-01

    Full Text Available El presente artículo pretende despejar las dudas suscitadas en las salas de investigación de los archivos, en cuanto a la consulta de los documentos portadores  de información se refiere, bien por ser fuentes históricas, bien por tratarse de testimonios y pruebas de derechos adquiridos por las administraciones y administrados. La documentación histórica por excelencia (de más de 100 arios de antigüedad es de consulta libre, pues el desvelo y discernimiento de su tenor no atenta contra la intimidad de las personas ni contra la integridad de los procedimientos. No ocurre lo mismo con la documentación reciente, cuyo reconocimiento de su contenido puede, en determinado casos, afectar negativamente a su intervinientes (autor, destinatario y rogatorio o, simplemente, por tratarse de actos personales y propios, conceptuados de íntimos, que no interesan a terceras personas. Pero hay otros impedimentos, menos emblemáticos y reconocidos, que impiden la lectura de los documentos como son su mal estado de conservación  (lo que limita su manejo y la ausencia de instrumentos de descripción (lo que impide la localización de los documentos de interés. Estos impedimentos son a los que hemos bautizado con la denominación de “filtros de accesibilidad”, y que son los siguientes: Filtro legal (o plazos administrativos de accesibilidad y derecho a la intimidad, filtro de conservación (o mal estado de los documentos y filtro de los descriptores (o ausencia de instrumentos de descripción documental.The purpose of this article is to clear up the doubts concerning the difficulty of access to documents in public archives. Ancient documents (those more than one hundred years old are free to access since  the revealing of its tenor does not violate the right to privacy or the integrity of procedures. However, the access to recent documents may be detrimental to the people implied (author, addressee, etc particularly in the case of personal acts

  4. Concepciones y concepciones alternativas de estudiantes universitarios/as de biologia y futuros maestros/as de Ciencia de escuela secundaria sobre la teoria de evolucion biologica por seleccion natural

    Science.gov (United States)

    Morales Ramos, Egda M.

    La teoria de evolucion biologica (TEB) por seleccion natural es uno de los conceptos unificadores mas importantes del curriculo de Biologia. En Puerto Rico se han hecho pocas investigaciones que abunden sobre las concepciones y concepciones alternativas (CA) que tienen los estudiantes universitarios/as de Biologia y los maestros/as de Ciencia del nivel secundario sobre esta teoria. La politica publica educativa actual establece mediante documentos normativos como los Estandares de contenido y Expectativas de grado del Programa de Ciencias [Puerto Rico Core Standards] la ensenanza de esta teoria. Sin embargo, no se encontraron preguntas sobre la seleccion natural en los ejercicios de practica provistos por el Departamento de Educacion para las pruebas estandarizadas lo cual puede influir para que no se ensene adecuadamente. Las preguntas de investigacion fueron 1. ¿Cuales son las concepciones y concepciones alternativas de estudiantes universitarios/as y de los futuros maestros y maestras de Ciencia sobre la TEB? 2. ¿Cuales conceptos que seleccionan los estudiantes universitarios/as y los futuros maestros y maestras de Ciencia sobre la TEB coinciden con lo aceptado como valido por la comunidad cientifica? y 3. ¿Como comparan las respuestas de la prueba original. v. Entendiendo el cambio biologico que mide concepciones y CA sobre la TEB por seleccion natural, con las de la traducida al idioma espanol? Se utilizo el metodo cuantitativo con un diseno de investigacion transversal por encuesta. La tecnica principal para recopilar los datos fue una prueba con doce items, que formo parte de un instrumento para el cual se recopilaron diversas fuentes de evidencia acerca de su validez. Las muestras estuvieron formadas por 69 estudiantes de Ciencias Naturales y por 16 estudiantes futuros maestros y maestras del nivel secundario de la UPR-RP. Se utilizaron estadisticas descriptivas, analisis de Ji cuadrado y se calcularon los coeficientes alfa de Cronbach y de Spearman

  5. Evaluation of radiosensitivity and correlation between physical and biological dosimetry in a case of vascular radiology; Valoracion de la radiosensibilidad y correlacion entre dosimetria biologica y fisica en un caso de radiologia vascular

    Energy Technology Data Exchange (ETDEWEB)

    Montoro, A.; Sebastia, N.; Aparici, F.; Candela, C.; Soriano del Castillo, J. M.; Perez, J.; Gras, P.; Cervera, J.; Alonso, O.; Villaescusa, J. I.

    2013-07-01

    The threshold dose required to produce a deterministic effect or even differences in the degree of the effect produced vary between individuals due to idiopathic causes, at the age or underlying disease. According to this work based on the Society of Interventional Radiology and the Guidelines for patient radiation dose management greater than 60 minutes fluoroscopy time management it is an indirect indicator of a significant radiation dose. According to this guide, instructions post procedure in these cases included a follow-up of the patient. (Author)

  6. The comet assay as a dosimetric tool in evaluation of overexposure localized irradiation; El ensayo de cometa como herramienta de la dosimetria biologica en la evaluacion de sobreexposiciones fuertemente localizadas

    Energy Technology Data Exchange (ETDEWEB)

    Giorgio, Marina Di; Taja, Maria R.; Nasazzi, Nora [Autoridad Regulatoria Nuclear, Buenos Aires (Argentina); Bustos, Norma; Cavalieri, Hernan; Bolgiani, Alberto [Fundacion Fortunato Benaim, Buenos Aires (Argentina)

    2001-07-01

    With inhomogeneous exposures, as is characteristic in accidents, the skin may be an important organ in determining clinical prognosis, being dosimetric assessment a necessary requirement. In order to get information to be applied on the evaluation of skin biopsies without culture for an early assessment of irradiation consequences in locally irradiated individuals, contributing with the biophysical techniques, we evaluate the alkaline comet assay (for doses < 5 Gy) as a method for the detection of DNA radiation induced damage in keratinocytes from primary and secondary cultures obtained from medium thickness skin biopsies and epidermal cells, without culture, derived from the same sample of skin biopsies of patients requiring grafts. To extend the dose range (> 5 Gy), neutral comet assay was applied to keratinocytes from primary and secondary cultures and to a suspension of epidermal cells obtained from biopsies irradiated in vitro an afterwards processed to obtain the mentioned cellular suspension, in order to reproduce the closest condition to in vivo overexposure. The correlation of the obtained data with factors of the patient and the corresponding skin graft response, were evaluated. (author)

  7. Activities developed by the biological dosimetry laboratory of the Autoridad Regulatoria Nuclear - ARN of Argentina; Actividades desarrolladas por el laboratorio de dosimetria biologica de la Autoridad Regulatoria Nuclear de Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Radl, A.; Sapienza, C. E.; Taja, M. R.; Bubniak, R.; Deminge, M.; Di Giorgio, M., E-mail: csapienza@arn.gob.ar [Autoridad Regulatoria Nuclear (ARN), Buenos Aires (Argentina)

    2013-07-01

    Biological dosimetry (DB) allows to estimate doses absorbed in individuals exposed to ionizing radiation through the quantification of stable and unstable chromosome aberrations (SCA and UCA). The frequency of these aberrations is referred to a calibration dose response curve (in vitro) to determine the doses of the individual to the whole body. The DB is a necessary support for programs of national radiation protection and response systems in nuclear or radiological emergencies in the event of accidental or incidental, single overexposure or large scale. In this context the Laboratory of Dosimetry Biological (LDB) of the Authority Regulatory Nuclear (ARN) Argentina develops and applies different dosimeters cytogenetic from four decades ago. These dosimeters provide a fact more within the whole of the information necessary for an accidental, complementing the physical and clinical dosimetry exposure assessment. The most widely used in the DB biodosimetric method is the quantification of SCA (dicentrics and rings Central) from a sample of venous blood. The LDB is accredited for the trial, under rules IRAM 301: 2005 (ISO / IEC 17025: 2005) and ISO 19238:2004. Test applies to the immediate dosimetry evaluation of acute exposures, all or a large part of the body in the range 0,1-5 Gy. In this context the LDB is part of the Latin American network of DB (LBDNet), BioDoseNet-who and response system in radiological emergencies and nuclear IAEA-RANET, being enabled to summon the LBDNet if necessary.

  8. Ocho documentos barceloneses sobre ventas y cesiones de esclavos (1395

    Directory of Open Access Journals (Sweden)

    Josep María Llobet Portella

    2000-01-01

    Full Text Available Se comentan ocho documentos notariales del año 1395 que ofrecen información sobre la venta de tres esclavas y la cesión de un esclavo por un período de nueve años a una mujer llamada Violante que era la esposa de Berenguer de Cortilles, consejero y tesorero de la reina Violante, consorte esta última del monarca catalanoaragonés Juan I. El precio de las esclavas fue establecido entre los 800 y los 1.050 sueldos, mientras que la cesión del esclavo se valoró en 720 sueldos. Los tres vendedores y el cedente eran de las ciudades de Barcelona y Tarragona.Eight notarial documents of the year 1395 are commented; these offer Information on the sale of three female slaves and the cession of a male slave for a nine year peñod to a woman called Violante that was the wife of Berenguer de Cortilles, consultant and treasurer of the queen Violante, consort this last of the catalanoaragonese king Juan I. The pnce of the slaves was established between 800 and 1.050 sueldos, while the slave's cession was valued at 720 sueldos. The three salespersons and the grantor were from the cities of Barcelona and Tarragona.

  9. La carta de términos : documento constitutivo municipal

    Directory of Open Access Journals (Sweden)

    Jósé Miguel López Villalba

    2004-01-01

    Full Text Available Los concejos de toda época se han apoyado en la potestad de control sobre los límites de su territorio para garantizar la integridad de sus propiedades. Por ello, el apeo o carta de términos, como instrumento jurídico y fiscal, representa la esencia de los documentos constitutivos municipales. Aunque el origen de estas actuaciones suele ser tusivo, algunos deslindes se realizan de forma espontánea, sin intervación de ninguna autoridad. Este es el caso que manifiesta la carta de términos realizada a finales del siglo XV que fue emitida ante la iniciativa de ciertas villas limítrofes a Guadalajara por la ausencia de hitos delimitadores.Along history town councils have guaranted the wholeness of their properties making use of their power to control the limit of the territories. For that reason boundaries as a judicial and fiscal instrument, represent the core of the municipal constitutive documents. Althought a warrant is usually the origin of these actions, some boundaries are carried out spontaneosly, without any autority control. This is the case of this boundary stone charter, that was issued at the end of xiv century, at the request of some bordering small towns near Guadalajara, due to the lack of milestones and delimitations.

  10. Sistema neuronal difuso para la gestión de documentos estructurados

    OpenAIRE

    Sainz Palmero, Gregorio Ismael; Cano Izquierdo, José Manuel; López Coronado, Juan; Dimitriadis Damoulis, Yannis

    1995-01-01

    En la presente comunicación se presenta el problema de la gestión automatizada de documentos electrónicos desde un doble punto de vista: normalización y reconocimiento-clasificación. Se propone un sistema que aborda estos problemas mediante la utilización, por un lado, de la arquitectura de documentos de la norma ODA/ODIF (ISO8613) y, por otro, de redes neuronales, Fuzzy ARTMAP, para la clasificación del documento y sus componentes.

  11. La gestión de documentos como estrategia de innovación empresarial

    Directory of Open Access Journals (Sweden)

    Arcángel Eduardo Sánchez

    2014-08-01

    Full Text Available Se analiza la gestión de documentos como un proceso que permite apoyar y generar diferentes tipos de innovaciones en el sector empresarial. Para los efectos metodológicos, se fundamenta una investigación descriptiva documental, lo cual permite exponer de forma sucinta la génesis, definición, beneficios, y procesos de normalización de documentos. Se prevé que para favorecer la generación de innovaciones se requiere maximizar el valor de componentes como la información y el conocimiento, en conjunto con el recurso humano comprometido y el efectivo uso de las tecnologías de información y comunicación. Como aspectos estratégicos, se afianza la gestión de conocimientos, como un factor necesario de insertar en la estrategia empresarial, responsable del control eficiente y sistemático desde la creación, recepción, mantenimiento, uso y eliminación de los documentos. Se recomienda hacer efectivo la operatividad de técnicas que permitan la captura y gestión de la información relacionada con las actividades y transacciones en forma de documentos ISO(2001, así como también establecer lineamientos y políticas que inciden directamente desde la producción del documento y su uso como recurso informativo, hasta la aplicación de sistemas tecnológicos que inciden en los tiempos para la recuperación de información, y a su vez se logre nuevas formas de trabajo en la gestión del recurso humano, lo cual ha de redundar, tanto en la organización como en la correcta operatividad de técnicas para la conservación de documentos de utilidad para esta.

  12. Estilos de citas y referencias de documentos electrónicos

    OpenAIRE

    Sorli Rojo, Ángela; Merlo Vega, José Antonio

    2000-01-01

    La descripción formal de los documentos es una actividad documental que hasta el momento afectaba a un conjunto de documentos tipológicamente fáciles de identificar, debido a que presentaban soportes similares -generalmente en papel- y a que existía una larga tradición de normalización de las referencias bibliográficas. El desarrollo de la telemática como herramienta informativa y de comunicación ha obligado a los investigadores y a los profesionales de la documentación a establecer sistemas ...

  13. Algunas técnicas de clasificación automáticade documentos

    OpenAIRE

    Figuerola, Carlos G.; Alonso Berrocal, José Luis; Zazo Rodríguez, Ángel Francisco; Rodríguez Vázquez de Aldana, Emilio

    2005-01-01

    La idea de clasificación es bien conocida por quienes se dedican a la documentación.Sin entrar en disquisiciones formales, se trata de organizar los documentos en algunaforma que permita después su mejor recuperación. En torno a ello se han elaboradodiversas técnicas, que se han aplicado con mejor o peor fortuna. Con la crecientedisponibilidad de documentos en formato electrónico, susceptibles, por consiguiente,de ser procesados de manera automática, surge la posibilidad de abordar laclasific...

  14. Una lectura cuantitativa de los documentos de competencias de los nuevos grados de Derecho

    OpenAIRE

    Leví Orta, Genoveva; Ramos Méndez, Eduardo

    2014-01-01

    Los documentos de formulación de competencias de los grados constituyen una fuente valiosa para el análisis, valoración y comparación del perfil de formación que ofrecen actualmente las diferentes titulaciones. Este trabajo tiene como objetivo realizar una lectura cuantitativa, basada en las ideas del Análisis de Contenido, de los documentos de competencias del grado de Derecho de distintas universidades españolas. La metodología empleada tiene dos fases. En primer lugar, se identifica en el ...

  15. OS LETRAMENTOS ESCOLARES NOS DOCUMENTOS OFICIAIS DA MODALIDADE DE ENSINO PROEJA

    Directory of Open Access Journals (Sweden)

    Adriana Fischer

    2013-04-01

    Full Text Available O objetivo deste artigo é analisar os indicativos da teoria sociocultural dos letramentos em dois documentos oficiais do Curso Técnico em Informática do Programa Nacional de Integração da Educação Profissional com a Educação Básica na modalidade de Educação de Jovens e Adultos (Proeja, sendo eles o Documento Base e o Projeto Pedagógico de um Curso Técnico em Informática. A finalidade é discutir os sentidos e as questões ideológicas que perpassam a organização curricular deste curso. A pesquisa tem como suporte a teoria sociocultural dos letramentos e a base linguística se vincula à perspectiva dialógica bakhtiniana. Os resultados indicam que os documentos abrem possibilidades para o planejamento de um trabalho que favoreça a constituição crítica de sujeitos letrados. Palavras-chave: Letramentos. Proeja. Documento Base. Projeto Pedagógico. Curso Técnico em Informática.

  16. Documentos para la historio social de Popayán en el Siglo XVIII

    Directory of Open Access Journals (Sweden)

    Peter Marzalh

    1970-01-01

    Full Text Available Documentos para la Historia Social de Papayán en el siglo XVIII. Varios/ Archivo Central del Central del Cauca. Fondo: Protocolos Notariales. Años 1616, 1620, 1621, 1629, 1634. Transcripción de Peter Marzahl// En: Anuario No. 5 (1970; p. 143-188. Serie de documentos, testamentos, contratos, etc., en donde se dan datos importantes para reconstruir aspectos de la economía y sociedad del Cauca del siglo XVIII, tales como: número de vecinos, encomenderos, mano de obra indígena y esclava; importancia de la minería como motor económico de la región; relaciones entre encomienda y control de mano de obra; el desarrollo de una economía mercantil con surgimiento de compañías para tal actividad.

  17. Conservación y preservación de documentos audiovisuales

    Directory of Open Access Journals (Sweden)

    Pulido Daza, Nelson Javier

    2015-02-01

    Full Text Available Se exponen aspectos relacionados con la conservación y la preservación de documentos audiovisuales. El artículo se inicia con una descripción general de la Fundación Patrimonio Fílmico Colombiano, siendo ésta la institución encargada de la salvaguarda de los documentos fílmicos de la Nación. Se presenta como una herramienta que evidencia ciertas características a tener en cuenta en la elaboración de un Sistema de Conservación y Preservación con base en lineamientos nacionales e internacionales, o que permite fundamentar una estructura pertinente y orientada al contexto de la entidad y el Estado. Se analizan las estructuras de las Normas de descripción con el fin de establecer una integridad con lo estipulado en los Programas de Gestión Documental.

  18. O paradoxo dos documentos de identidade: relato de uma experiência nos Estados Unidos

    Directory of Open Access Journals (Sweden)

    Mariza Peirano

    2009-12-01

    Full Text Available No mundo moderno, documentos são objetos indispensáveis, sem os quais não conseguimos demonstrar que somos quem dizemos que somos. Precisamos de provas materiais que atestem a veracidade da nossa autoidentificação. Este artigo relata a experiência de pesquisa sobre documentos de identidade nos Estados Unidos, por meio de dois eventos em que Eliot Spitzer, governador do estado de Nova Iorque de janeiro de 2007 a março de 2008, foi figura central, e nos quais os documentos foram um subtexto importante. Uma comparação com o caso brasileiro está presente ao longo do artigo, que termina examinando o fenômeno conhecido como ID theft.In the modern world, IDs are indispensable objects, without which we cannot prove that we are who we say we are. We need material substantiation that attests to the authenticity of our self-identification. This paper is an account of an ethnographic experience about IDs and identification processes in the US, based on the examination of two events in which Eliot Spitzer, the New York State governor from January 2007 to March 2008, was a central figure. A comparison with the Brazilian scenario is present throughout the paper, and it ends by focusing on the ID theft phenomenon.

  19. Los documentos internos de la industria tabaquera y la prevención del tabaquismo en España

    OpenAIRE

    Soto-Mas F.; Villalbí J.R.; Granero L.; Jacobson H.; Balcazar H.

    2003-01-01

    El acuerdo alcanzado en 1998 entre las tabaqueras y la mayoría de los estados de Estados Unidos puso a disposición pública millones de páginas de documentos internos, muchos de ellos con información que la industria hubiera preferido mantener en secreto. La revisión de dichos documentos supone un recurso importante para la lucha internacional contra el tabaquismo, ya que se han archivado electrónicamente, y su acceso se ha facilitado a todo el mundo a través de Internet. Estos documentos prop...

  20. La forma de los documentos en cuatro lenguajes documentales en lengua española

    Directory of Open Access Journals (Sweden)

    Mónica G. Pené

    2013-12-01

    Full Text Available Debido a la aparición de nuevas formas de documentos, a la necesidad de indicar dicha forma en los catálogos en línea y a que los términos de forma extraídos de la Clasifiación Decimel Universal (CDU, LIsta de Encabezamiento de Materias para Bibliotecas (LEMB, Vocabulario controlado en bibliotecología, ciencias de la información y temas afines (VCBCI,y Tesauro de la UNESCO (TU, todos en lengua española, frente a una fuente terminológica independiente y normalizada (normas ISO 5127 sobre la terminología de la documentación. De 558 formas detectadas en total 164 (29% se encuentran en las normas ISO y la mayoría de los lenguajes documentales, mientras que 394 (71% aparecen solamente en los lenguajes, CDU incluye 371 formas (66%, LEMB 140 (25%, VCBCI 206 (37% y TU 116 (21%. De las formas incluidas en las normas ISA 14 (18% de documentos tradicionales, 20 (35% de los icónicos, y 7 (25% de los audiovisuales no se encuentran en ningún lenguaje documental. A su vez, las formas que se encuentran en los lenguajes documentales, pero no en las normas ISO incluyen términos específicos de los documentos tradicionales, así como documentos tridimensionales y legibles por computadora. Ninguno de los lenguajes documentales estudiados incluye formas apropiadas para describir los nuevos recursos de Internet. La compatibildiad de los términos entre los lenguajes es muy limitada, ya que sólo 42 formas (8% se encuentran en los cuatro lenguajes. Se concluye que los lenguajes documentales son buenas fuentes terminológicas para la forma de los documentos, pero requieren ser revisados, para incluir una mayor cantidad de términos, su actualización permanente y mejoramiento de la compatibilidad.     

  1. Análise comparativa de um documento de adequação curricular

    Directory of Open Access Journals (Sweden)

    Ana Lúcia Côrrea Varella

    2011-03-01

    Full Text Available A partir dos ideários de educação inclusiva, buscam-se meios e instrumentais que possam oferecer condições diferenciadas para possibilitar o acesso aos mesmos direitos às pessoas com diferentes necessidades. Neste sentido, elaborou-se um documento individual de adequação curricular, que foi aplicado a professores de alunos com necessidades educacionais especiais, em particular alunos com deficiência ou forte indicativo, em diversas escolas do ensino público de uma cidade do oeste paulista. O trabalho aqui apresentado tem como objetivo apresentar uma análise comparativa da avaliação do documento de adequação curricular por dois diferentes grupos de professores, o primeiro (G-1 já teve contato com o instrumento, e o segundo (G-2 o desconhece. A metodologia utilizada foi a aplicação de questionário composto de 11 questões de múltipla escolha, das quais duas solicitavam justificativas. Observou-se que a avaliação do documento foi positiva para a maior parte dos participantes de G-1, e os participantes de G-2 apontam interesse em ter um instrumento que facilite a atividade do professor e a aprendizagem com esse alunado. Tais resultados indicam que o ACI pode ser útil enquanto um recurso didático capaz de orientar a prática pedagógica e para que alunos com deficiência acessem o currículo comum.

  2. Biological treatment of chemical industry wastewater having toxic components; Degradazione per via biologica di reflui a componenti tossiche prodotti da una industria farmaceutica

    Energy Technology Data Exchange (ETDEWEB)

    Fabbricino, M.; Pepe, G. [Naples Univ. Federico 2., Naples (Italy). Dipt. di Ingegneria Idraulica ed Ambientale Girolamo Ippolito; Scevola, D. [Novartis Farma SpA, Torre Annunziata, NA (Italy); Fiorillo, S. [Impianto di depurazione di Cuma, Napoli Ovest, Licola di Pozzuoli, NA (Italy)

    2001-09-01

    In order to understand the capacity of an existing biomass to front the variations of wastewater influent characteristics and to evaluate the possibility of toxic components removal using biological processes, it is single out the intervention required to obtain the envisage efficiency of the activated sludge phase, following the arrival of toxic components. Together with experimental results on pilot scale, the performance of the industrial treatment plant is presented too, showing the effectiveness of activated carbon dosage in the biological phase to preserve the efficiency of the process despite of influent wastewater toxicity. [Italian] Il lavoro presenta l'indagine sperimentale condotta per rilevare la capacita' di adattamento della biomassa dell'impianto di depurazione di una industria farmaceutica a seguito della variazione delle caratteristiche del liquame influente, e la possibilita' di degradazione, per via biologica, delle componenti tossiche presenti nel refluo. Attraverso prove in scala pilota vengono evidenziati gli effetti causati dall'arrivo di tali componenti su di un impianto di ossidazione a fanghi attivi a regime, e vengono individuati gli interventi da apportare per garantire il raggiungimento degli standard richiesti nell'effluente. I risultati ottenuti vengono estesi all'impianto a scala reale di cui vengono illustrati i rendimenti depurativi in termini di abbattimento del carico inquinante.

  3. Mapa Hipertextual (MHTX): um modelo para organização hipertextual de documentos

    OpenAIRE

    Gercina Angela Borem de Oliveira Lima

    2004-01-01

    Este estudo visa a construção de um modelo estruturado semanticamente para auxiliar a organização e representação do conhecimento humano estruturado em hipertextos, baseado nas teorias da análise facetada e do mapa conceitual. O segundo passo neste estudo é a aplicação do modelo semântico para criar um protótipo chamado MAPA HIPERTEXTUAL (MHTX): um modelo para organização hipertextual de documentos que deverá ser utilizado para implementar a BTDECI UFMG (Biblioteca de Teses e Dissertações do...

  4. Normalizando la clasificación de documentos: propuesta de reglas

    OpenAIRE

    Fernández, Carmen; Hernández, Alicia; Toyos-Castro, A.B. (Ana)

    2015-01-01

    Para normalizar el proceso de clasificación de documentos es necesario que las actividades y operaciones que sustancian dicho proceso respondan a criterios objetivos, de tal forma que la identificación y formalización de las agrupaciones documentales en las que se articula el cuadro de clasificación de una organización, respondan a criterios estrictamente funcionales, que las denominaciones de las agrupaciones respondan a criterios naturales basados en fuentes primarias de información, y, fin...

  5. Documento sobre a imigração italiana em Ribeirão Preto

    Directory of Open Access Journals (Sweden)

    Brasil Bandecchi

    1967-12-01

    Full Text Available O documento que divulgamos pelas páginas desta Revista, intei-ramente inédito, nos foi cedido pelo dr . Francisco de Carvalho Soa-res Brandão Neto e pertence à sua irmã, que tem relações de paren-tesco com a família de Rodrigo Silva (Rodrigo Augusto da Silva, a quem o ofício é dirigido e que era, ao tempo, Ministro da Agri-cultura .

  6. Funes: repositorio digital de documentos en Educación Matemática

    OpenAIRE

    Gómez, Pedro; Soler, Camilo; Cañadas, María C.; Restrepo, Ángela M.

    2009-01-01

    En esta presentación justificamos la necesidad de aprovechar las oportunidades que ofrece actualmente la tecnología para compartir el conocimiento y aprender de los demás. Presentamos el proyecto Funes. Funes es un depósito electrónico de documentos en educación matemática. Su propósito es contribuir a la consolidación de la comunidad iberoamericana de Educación Matemática al proporcionar un espacio virtual en el que profesores, innovadores e investigadores en educación matemática pueden comp...

  7. Observatorio Gestión de documentos: enfoque en las organizaciones

    OpenAIRE

    Bustelo-Ruesta, Carlota

    2006-01-01

    Gestión de documentos o gestión documental es un concepto que puede ser utilizado en distintos contextos con distintos significados. Cuando lo utilizamos siempre nos vemos obligados a definir el ámbito de aplicación. En este caso me refiero a la gestión de la información registrada creada o recibida por una organización en el desarrollo de sus actividades y que se conserva como información o prueba.

  8. Reparación de revocos de morteros. Nuevos documentos normativos de AENOR

    OpenAIRE

    Corroto, M.; Medina Martínez, César; Sánchez de Rojas, María Isabel; Sabador, E.; Frías, Moisés

    2012-01-01

    [ES] Los procedimientos de actuación en las fachadas de edifi cios muchas veces pasan por la conservación y restauración de revocos de mortero, que actualmente han sido objeto de nuevos documentos normativos de AENOR, que es la entidad responsable del desarrollo de la Normalización en España. En este escrito, que forma parte del Informe PNE 41807 IN que saldrá publicado a fi nales del 2012, se describen las técnicas de reparación, teniendo en cuenta que cada c...

  9. Remodelagem do sistema computacional para dosimetria em radioterapia por nêutrons e fótons baseado em métodos estocásticos - SISCODES

    OpenAIRE

    Bruno Machado Trindade

    2011-01-01

    O presente trabalho apresenta a remodelagem do Sistema Computacional para Dosimetria em Radioterapia por Nêutrons e Fótons Baseado em Métodos Estocásticos . SISCODES. Para isso mostra a proposta inicial e estado anterior do sistema, as modificações e expansões propostas e executadas, e o estado atual de desenvolvimento do sistema. Melhorias futuras são propostas ao final do trabalho. O SISCODES é um sistema que permite a execução de planejamento computacional 3D em radioterapia, através de si...

  10. Management of radioactive wastes from HNMD (Hospital Naval Marcilio Dias) and from IRD (Instituto de Radioprotecao e Dosimetria) due to the accident in Goiania

    International Nuclear Information System (INIS)

    Peres, S.S.; Silva, J.J.G.

    1988-01-01

    A description of the methods and procedures for the management of the radwastes from HNMD (Hospital Naval Marcilio Dias) and from IRD (Instituto de Radioprotecao e Dosimetria) due to the radioactive accident at Goiania City, is presented. Basically the radwastes are consituted by excreta of persons involved in the accident and materials used for medicals care of patients. The method employed for treatment of faeces was its aggregation in lime and cement and for the case of urine, ion exchange resing, was used. Others type of radwastes were compacted or simply conditionned. Many releases to the environment, were possible. (author) [pt

  11. Dosimetria e monitoração de feixes estreitos de raios-X, produzidos por acelerador linear de particulas, para aplicação em radiocirurgia

    OpenAIRE

    Jose Carlos Ferraz de Campos

    1986-01-01

    Resumo: O presente trabalho teve como objetivo principal investigar as características principais de dosimetria e monitoração de feixes finos de raios-x, e sua aplicação a um Acelerador Linear de Partículas de 4 MV, para seu emprego na Radiocirurgia. Com esta finalidade, construiu-se um sistema de colimação adicional, composto de 3 colimadores de Chumbo, que permite, a partir do campo mínimo protocolar produzido pelo acelerador, obter os feixes finos de 6, 10 e 15 mm de diâmetros. Um siste...

  12. O livro e a biblioteca, o documento e o arquivo na era digital

    Directory of Open Access Journals (Sweden)

    Diana Gonçalves Vidal

    2012-07-01

    Full Text Available  O artigo almeja refletir sobre o lugar do livro e do documento na era digital, defendendo a convivência das linguagens oral, escrita e digital e de seus produtos no presente e futuro e advogando a preservação dos vários suportes de informação. Propõe a elaboração de uma política de descarte afinada aos interesses da história da educação e aos princípios da arquivística que deve levar em conta os aportes das novas tecnologias.Palavras-chave: livro, biblioteca, documento, arquivo, era digital, história da educação.   Abstract The article aims to discuss the place of books and documents in the digital era. Defends the surviving of oral and written languages, as well as their products, in the digital world. Claims for the development of a preservation policy built upon the union of history of education and archivology interests made possible by using the new technology. Keywords: book, library, document, archive, digital era, history of education. 

  13. Los documentos internos de la industria tabaquera y la prevención del tabaquismo en España

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    Soto-Mas F.

    2003-01-01

    Full Text Available El acuerdo alcanzado en 1998 entre las tabaqueras y la mayoría de los estados de Estados Unidos puso a disposición pública millones de páginas de documentos internos, muchos de ellos con información que la industria hubiera preferido mantener en secreto. La revisión de dichos documentos supone un recurso importante para la lucha internacional contra el tabaquismo, ya que se han archivado electrónicamente, y su acceso se ha facilitado a todo el mundo a través de Internet. Estos documentos proporcionan a los impulsores de las políticas de prevención información relevante y de utilidad. Para favorecer su uso, este estudio describe y enumera los archivos electrónicos con documentos internos de la industria tabaquera, presenta el proceso para su investigación y describe documentos que desvelan las tácticas que en los años setenta, ochenta y noventa emplearon las tabaqueras para manipular la política y a la sociedad en beneficio de sus intereses comerciales en España.

  14. MEMORIAS DE INFANCIA EN DICTADURA: DE LA POTENCIA DEL DOCUMENTO AL AFECTO DE ARCHIVO

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    Natalia Taccetta

    2018-01-01

    Full Text Available El presente artículo se propone examinar el modo en que dos producciones recientes de cine documental latinoamericano configuran archivos audiovisuales a partir de los testimonios y los documentos de los hijos de militantes que transitaron la experiencia de la vida colectivizada en Cuba tal como se narra en La guardería (Virginia Croatto, 2016 respecto de los hijos de los militantes de Montoneros que regresaron a Argentina en el marco de la denominada “Contraofensiva”, y El edificio de los chilenos (Macarena Aguiló, 2010, respecto de los hijos de militantes del MIR cuando volvieron a Chile en la “Operación retorno” a fines de los años setenta.

  15. Valorar y seleccionar documentos. Qué es y cómo se hace

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    Francisca Amorós Vidal

    2012-03-01

    Full Text Available Las primeras instituciones españolas que contaron con comisiones evaluación o calificación de documentos fueron el Ayuntamiento de Zaragoza (1990 y la Generalitat de Catalunya (1991. Elena Rivas Palá, es archivera del Ayuntamiento de Zaragoza y miembro Mesa de Trabajo de Archivos de la Administración Local; Lluis Cermeno Martorell es archivero de la Generalitat y, desde su constitución, secretario de la Comisión Nacional de Acceso, Valoración y Selección Documental catalana. Los dos autores han estado vinculados a distintos comités de la Asociación Española de Normalización y Certificación (AENOR y me consta que Elena Rivas ha impartido numerosos cursos sobre el tema, casi desde que puso en marcha la Comisión de Valoración de su ayuntamiento.

  16. Violencia escolar (“Bullying”) : documento para padres y educadores = “Bullying” : a document for parents and teachers

    OpenAIRE

    Tresgallo Saiz, Emilio

    2008-01-01

    El breve documento, analiza el término “bullying”, y las manifestaciones de la violencia escolar. Se ofrece una visión de los principales agentes implicados en dicho fenómeno (víctima, agresor y espectadores). Aspectos trascendentales del documento, resultan ser, los tratados en torno al momento, en el que los adultos, se enteran de lo que le sucede a la víctima, o las consecuencias de dicha violencia para los afectados. La novedad, del citado escrito, radica, en que incluye como uno de los f...

  17. Selección y evaluación de algoritmos para clasificación de documentos

    OpenAIRE

    Vergara García, Paula María

    2014-01-01

    Este trabajo ha consistido en un estudio sobre la clasificación de documentos en castellano, basándose en el estándar IPTC. Para ello se ha utilizado un conjunto de ejemplos formado por documentos previamente etiquetados. Partiendo de los distintos tipos de aprendizaje, los algoritmos de clasificación, las herramientas de las que se disponía para la clasificación y las características de conjunto de ejemplos, se decidió utilizar las librerías proporcionadas por las herramientas Mahout, Had...

  18. Conservación preventiva de documentos fotográficos con valor patrimonial

    Directory of Open Access Journals (Sweden)

    Luis Ernesto Paz Enrique

    2017-07-01

    Full Text Available La conservación preventiva de documentos se centra en otorgar condiciones óptimas a las fuentes para evitar su deterioro. Se plantean como objetivos 1 identificar los principales factores que inciden en las colecciones fotográficas que atesora la Sala de Historia de la Universidad Central “Marta Abreu” de Las Villas y 2 diseñar un plan de medidas de conservación preventiva para los materiales fotográficos del centro mencionado. El estudio se caracterizó por seguir una perspectiva metodológica mixta con la aplicación de métodos en los niveles teórico y empírico. Se identificaron los principales factores de deterioro de las colecciones fotográficas de la Sala de Historia de la Universidad Central “Marta Abreu” de Las Villas. Se diseñó un plan de medidas de conservación preventiva a partir de las características de las fuentes y del diagnóstico realizado. Los materiales fotográficos presentan características distintivas del resto de los documentos. El diseño de planes de conservación preventiva debe estar centrado en los resultados obtenidos en los diagnósticos que se realicen a las colecciones. Se identifican las características de los materiales fotográficos. Se realiza un estudio de caso para caracterizar los factores de deterioro que inciden en las colecciones fotográficas de la Sala de Historia de la Universidad Central “Marta Abreu” de Las Villas. Se enuncian acciones para favorecer la conservación preventiva de los materiales fotográficos.

  19. Crônica política sobre um documento contra a "ditabranda"

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    Caio Navarro de Toledo

    2009-10-01

    Full Text Available Este breve artigo, uma crônica política, examina o significado e os efeitos políticos e ideológicos de um abaixo-assinado criado na Internet, em fevereiro de 2009. "Repúdio e Solidariedade" questionou a utilização do termo "ditabranda" - difundido pelo jornal paulista Folha de S. Paulo para designar a ditadura militar brasileira -, bem como prestou solidariedade a dois acadêmicos e intelectuais da Universidade de São Paulo (USP, conhecidos por suas atuações em defesa dos direitos humanos no Brasil. Subscrito por mais de 8 mil signatários, em pouco mais de seis semanas, o abaixo-assinado pode ser considerado - como testemunham os extensos comentários nele contidos - um relevante documento na luta pelo direito à verdade e à justiça sobre os fatos ocorridos durante o regime militar brasileiro (1964-1985. Talvez o seu papel simbólico mais relevante seja o de ter fincado uma bandeira na luta ideológica em torno da memória sobre 1964. No centro dessa bandeira seria reinscrita - como propôs um dos signatários do documento - a antiga consigna: no pasarán. Ou seja, os setores democráticos e progressistas da sociedade brasileira que apoiaram "Repúdio e Solidariedade" afirmam que não aceitarão calados as "falsificações da história" que impliquem o insulto à memória dos que lutaram, foram torturados e morreram na luta pela redemocratização do país.

  20. Citar documentos electrónicos. Revisión de propuestas y planteamiento de pautas generales

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    Mari Carmen Marcos Mora

    2002-01-01

    Full Text Available Se recogen las propuestas de normalización de citas de documentos electrónicos de varios autores que a su vez se basan para desarrollarlas en los estilos publicados por la ISO, la APA y la MLA. Se ofrecen unas pautas generales de aplicación que suponen una unificación de las presentadas

  1. Un documento inedito: Historia de Sebastián de Belalcázar, escrita por su hijo, Don Francisco

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    Juán Friede

    1964-04-01

    Full Text Available El documento que publicamos, inédito hasta ahora es una breve historia de Sebastián de Belalcázar, gobernador de Popayán, muerto en 1550, escrita por su hijo dos Francisco hacia 1557, cuando se encontraba en España.

  2. Estudio de la accesibilidad de los documentos científicos en soporte digital

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    Térmens Graells, Miquel

    2008-12-01

    Full Text Available This paper analyses the problems of accessibility posed by scientific articles published in digital format, focusing on the ease of use of their content with respect to the form in which they are published (irrespective of the recovery system. The two most widely used formats for the publication of scientific articles in digital format, HTML and PDF, are analysed, examining reader performance in relation to the presence of contents lists or internal or linked tables. The study involved two groups: 30 blind subjects, all JAWS users, contacted through the ONCE Foundation, and 30 sighted subjects, lecturers in the Department of Librarianship and Documentation of the University of Barcelona. The results shows the location of data in tables is easier in HTML documents through the inclusion of a contents list linked to these tables. Further, the inclusion of complete tables in the body of HTML document facilitates the reading activity of blind users. At the methodological level, this work reports two novelties with respect to the existing literature on usability by blind people: it examines the usability of the PDF format, and discusses a quantitative usability test. The latter hinders comparison with the majority of published articles.

    El artículo analiza los problemas de accesibilidad que actualmente presentan los artículos científicos en soporte digital. El estudio se centra en los aspectos de facilidad de uso del contenido de los documentos digitales según la forma en que se publiquen, sin entrar en el estudio de los distintos sistemas de recuperación. Se analizan los dos formatos más utilizados para la publicación de artículos científicos en soporte digital: HTML y PDF, estudiando el desempeño lector en relación a la presencia de sumarios o de tablas internas o vinculadas. El estudio se ha realizado con dos colectivos: 30 sujetos ciegos, usuarios de Jaws, contactados gracias a la mediación de la Fundación ONCE, y 30 sujetos no

  3. Documentos y escribanía del Cabildo catedralicia de Burgos (siglo XIII

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    Pilar Ostos Salcedo

    1994-01-01

    Full Text Available Frágil es la memoria humana y por ello la necesidad de fijar por escrito los hechos. Resulta incuestionable que ios testimonios escritos sirven para dejar constancia de lo acontecido. No de todo, pero sí de aquéllo de lo que se quería, o se debía, dejar prueba. Es cierto que el paso del tiempo ha influido en la merma de las fuentes escritas del pasado, a veces por descuido o dejadez, en ocasiones intencionadamente. Pero, si alguna institución se ha caracterizado, en general, por el celo en la conservación de su memoria histórica ha sido, principalmente, la eclesiástica. Monasterios y catedrales constituyen un buen ejemplo de ello, ya que desde muy temprano tuvieron conciencia de su importancia y de la necesidad de su guarda. Además, durante siglos fueron casi los únicos en tener capacidad escritoria y, por consiguiente, recaía en ellos la responsabilidad de plasmar por escrito las obligaciones y acuerdos establecidos por la gran mayoría de la población, incluidos los reyes. Contaban, igualmente, con un punto de referencia básico, los documentos procedentes de la cancillería pontificia así como con las diferentes reglas y disposiciones que ponían el acento en la escritura y en la escrituración.

  4. Educación para la paz y cultura de paz en documentos internacionales

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    María del Carmen Labrador Herráiz

    2013-05-01

    Full Text Available Se pretende conocer las aportaciones de diferentes organismos internacionales sobre educación para la paz y cultura de paz. Especialmente se han tenido en cuenta documentos del Consejo de Europa y de la UNESCO. La "Declaración de Viena y la consolidación de la paz", la "Declaración de Budapest y la construcción de la ciudadanía", el "Proyecto transdisciplinario por una cultura de paz" y el "Manifiesto 2000" vertebran estas páginas. La "Carta de Auroville" sirve de introducción. A partir de un breve análisis de esta documentación permite entender la educación para la paz como una experiencia de aprendizaje en una sociedad pluricultural que afronta la diferencia de manera informada, razonable, tolerante y ética. El Año Internacional de la Cultura de Paz, constituye una ocasión única para revisiones conceptuales y para decidir que la paz sólo puede lograrse con nuestros comportamientos, nuestras actitudes y nuestro vivir cotidiano.

  5. Documentos de la convención europea de la construcción metálica

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    Editorial, Equipo

    1968-03-01

    Full Text Available In accord with the established practice, “Informes de la Construcción” continues to publicise official documents from the European Convention on Metallic Construction. These documents are obviously of much interest to designers and construction engineers of metallic structures. The translation has been done by Dr. civil engineer Mr. Juan Batanero, and is based on the French edition.De acuerdo con la costumbre ya establecida, Informes de la Construcción continúa hoy dando a conocer los documentos oficiales de la Convención Europea de la Construcción Metálica, documentos de gran interés evidente para los proyectistas y constructores de estructuras metálicas. La traducción ha sido efectuada por el Dr. Ingeniero de Caminos Juan Batanero, partiendo de la edición francesa.

  6. Documentos Digitais: Preservação e Estratégias

    Directory of Open Access Journals (Sweden)

    Claudia Carmem Baggio

    2017-04-01

    Full Text Available A arquivologia tem na preservação digital um objeto de estudo que propõe padrões, normas, políticas, critérios e procedimentos para a preservação digital. Para poder conhecer as abordagens teóricas e metodológicas que têm sido publicadas, realizou-se uma coleta de dados de referências bibliográficas sobre o tema preservação de documentos digitais em arquivos, buscando principalmente textos recentes ligados a arquivologia. Os documentos se tornam digitais rapidamente devido à vulnerabilidade do ambiente digital. Estes são frágeis e não existe segurança suficiente para garantir sua preservação digital de longo prazo. Essa fragilidade pode estar em sua rápida degradação física, na obsolescência tecnológica, na complexidade e nos custos. Como respostas a este desafio, surgem estratégias de preservação digital que procuram incorporar todos os aspectos relacionados a esta problemática: custos, legislação, gestão, acesso, políticas e critérios. Estas estratégias reúnem soluções parciais ante um problema complexo, estando envolvidos, entre outros itens, a migração, emulação, arqueologia digital, criptografia, metadados, tecnologias livres, ou abertas como XML, HTML, Dublin Core. Esta pesquisa descritiva mostrou que a preservação digital está relacionada com a capacidade de armazenamento, migração e disseminação da informação que na maioria das vezes é administrada de forma centralizada. Com o objetivo de resolver tal problemática, têm-se hoje diversas propostas para a preservação digital., entre elas: Refrescamento; Migração ; Migração para suportes analógicos, Atualização de versões; Conversão para formatos concorrentes; Normalização; Migração a pedido; Migração distribuída; Emulação; Encapsulamento;4.1.5 A Pedra de Rosetta digital; Arqueologia digital; Conservação de hardware e software.;Tecnologias livres, ou abertas como XML, HTML, PDF-a; Reprografia. Das estratégias de

  7. Manual de RDFa 1.1: Marcado enriquecido de datos estructurados para documentos web

    Directory of Open Access Journals (Sweden)

    Juan Antonio Pastor Sánchez

    2013-03-01

    Full Text Available Los últimos dos años han sido testigos de una evolución interesante: mientras que en un principio la Web se construyó principalmente para el consumo humano, su contenido es cada vez más utilizado por las máquinas que esperan una cierta cantidad de datos estructurados. Los sitios web han empezado a identificar el título de la página, tipo de contenido y la imagen de previsualización con el objeto de proporcionar la información adecuada para ofrecerla como fuente de noticias al usuario cuando este hace clic en el botón "Me gusta". Los motores de búsqueda han comenzado a ofrecer resultados más ricos mediante la obtención de información estructurada muy detallada de las páginas web que rastrean. A su vez, los editores web están produciendo cantidades cada vez mayores de datos estructurados dentro de su contenido web para mejorar el posicionamiento de los sitios que gestionan en los buscadores. Una tecnología clave tras estos desarrollos es la capacidad de agregar directamente datos estructurados en páginas HTML. RDFa (Resource Description Framework in Attributes, RDF en atributos es una técnica que permite precisamente esto: proporciona un conjunto de atributos de marcado para enriquecer la información visual en la web con datos legibles por máquinas. En este Manual, se muestra la forma de expresar datos utilizando RDFa dentro del lenguaje HTML, y en particular el modo para marcar contenidos web ya existentes para su lectura por parte de personas con el objeto de expresar anotaciones RDFa (hints legibles por máquinas. Este documento proporciona únicamente una introducción a RDFa 1.1.

  8. Reparación de revocos de morteros. Nuevos documentos normativos de AENOR

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    Corroto, M.

    2012-12-01

    Full Text Available The facades of buildings operating procedures often pass through the conservation and restoration of mortar renderings, which currently have been the subject of new normative documents of AENOR, which is responsible for the development of standardization in Spain. Repair techniques are described in this paper, which is part of the PNE 41807 IN report which will be published at the end of 2012, taking into account that each case must be accompanied by a specific study of the problem to deal with in order to get a proper repair, to achieve the best results in the conservation of the historic buildings or not.

    Los procedimientos de actuación en las fachadas de edificios muchas veces pasan por la conservación y restauración de revocos de mortero, que actualmente han sido objeto de nuevos documentos normativos de AENOR, que es la entidad responsable del desarrollo de la Normalización en España. En este escrito, que forma parte del Informe PNE 41807 IN que saldrá publicado a finales del 2012, se describen las técnicas de reparación, teniendo en cuenta que cada caso concreto deberá ir acompañado de un estudio específico del problema a abordar con objeto de lograr una adecuada reparación, de forma que se logren los mejores resultados en la conservación de las edificaciones, sean éstas de interés histórico o no.

  9. Funes: un repositorio digital para publicar y compartir documentos en Educación Matemática

    OpenAIRE

    Gómez, Pedro; Cañadas, María C.; Soler, Camilo; Restrepo, Ángela M.

    2009-01-01

    Presentamos el proyecto Funes, un repositorio electrónico de documentos en Educación Matemática. Su propósito es contribuir a la consolidación de la comunidad iberoamericana de Educación Matemática, al proporcionar un espacio virtual en el que profesores, innovadores e investigadores pueden compartir su producción escrita y pueden aprender mutuamente a partir de ella.

  10. Sobre Escravidão no Império Romano (152 documentos epigráficos

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    Glória Portal

    1983-06-01

    Full Text Available (primeiro parágrafo do artigo É verdade que crescem dia a dia a consciência e a sensibilidade quanto às formas de ultraje à pessoa humana, entre elas a escravidão. O interesse é cada vez maior por documentos e estudos esclarecedores da trajetória do escravismo, reveladores do aprofundamento, fortalecimento e nuanças deste sistema. As províncias romanas não conheceram na mesma amplitude a difusão do sistema escravista, o que implica em diferenças essenciais entre elas quanto aos modos de exploração.  Prosseguimos agora estudos iniciados há alguns anos sobre a escravidão numa região determinada do Império Romano: a Dácia.  Nosso objetivo é o de procurar, principalmente através de toda a série documental epigráfica existente sobre escravidão na Província Dácia de Trajano (152 documentos, discernir em que medida o sistema escravista penetrou nesta província e quais os tipos de relações de produção que estão se estabeleceram. Até aqui inexistia tradução portuguesa dos documentos mencionados acima; isto é um argumento forte a nos impulsionar no presente estudo; além de outras razões.

  11. Tratamiento de los marcadores discursivos en documentos de referencia y curriculares: el caso del MCER y del PCIC

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    Torre Torre, Aroa Mª

    2017-08-01

    Full Text Available En este artículo tenemos como objetivo analizar cómo el Marco Común Europeo de Referencia y el Plan Curricular del Instituto Cervantes tratan los marcadores discursivos dentro del conjunto de los elementos pragmáticos. Averiguar las pistas que se dan sobre este aspecto en los documentos de referencia y curriculares resulta de especial interés porque son los documentos más manejados por profesores, evaluadores y creadores de materiales. De hecho, las indicaciones que en ellos se ofrecen tienen una gran repercusión en la planificación y elaboración de propuestas didácticas para el aula de ELE. De la revisión minuciosa de estos documentos se desprende que en el MCER no se da un tratamiento sistemático o riguroso a los marcadores discursivos y que, en el PCIC, si bien se opta por una forma determinada de presentar los marcadores en el inventario, a lo largo del mismo se cae en algunos contrasentidos, especialmente en el caso de los conversacionales.

  12. Uso de sintagmas nominais na classificação automática de documentos eletrônicos

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    Luiz Cláudio Maia

    Full Text Available Esta pesquisa verificou se ocorre aprimoramento na classificação de documentos eletrônicos com o uso de técnicas e algoritmos de mineração de texto (análise de texto utilizando-se, além das palavras, sintagmas nominais como indexadores. Utilizaram-se duas ferramentas nos experimentos propostos desta pesquisa o OGMA e a WEKA. O OGMA foi desenvolvido pelos autores para automatizar a extração dos sintagmas nominas e o cálculo do peso de cada termo na indexação dos documentos para cada um dos seis métodos propostos. A WEKA foi utilizada para analisar os resultados encontrados pelo OGMA utilizando aos algoritmos de agrupamento e classificação, SimpleKMeans e NaiveBayes, respectivamente, obtendo um valor percentual indicando quantos documentos foram classificados corretamente. Os métodos com melhores resultados foram o de termos sem stopwords e o de sintagmas nominais classificados e pontuados como descritores.

  13. Cuerpos marcados: la imagen como documento, testimonio y crítica social

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    Leticia Rigat

    2015-01-01

    Full Text Available [es] El presente trabajo busca reflexionar sobre los procesos de significación de un determinado uso de la fotografía documental, sobre cómo la imagen fotográfica se emplea no sólo para construir documentación sino también como imagen testimonial y de crítica social a partir de la estetización de la representación y una particular forma de mostración del cuerpo. A partir de lo anterior, nos proponemos indagar de qué manera algunos reportajes fotográficos pueden considerarse desde un punto de vista referencial y funcional como testimonios que manifiestan la existencia de un otro en situaciones veladas de miseria, descontento y deterioro físico y/o psíquico. Se trata de producciones que más que representar los sucesos del mundo, manifiestan su existencia. No se trataría del registro del acontecimiento (relacionado al archivo, a lo noticioso, al documento y a la memoria sino de la producción de imágenes que hacen aparecer -dan a ver- situaciones veladas en formas de testimonios fotográficos. [en] This paper seeks to reflect on the processes of meaning of a particular use of documentary photography, how the photographic image is used not only to build documentation but also as witness image and social criticism from the aestheticization of representation and particular form of demonstration of the body. Taking this into consideration, we intend to research how some photographic reports can be considered from a referential and functional point of view as evidence that shows the existence of the other in situations of misery, unhappiness and physical and /or psychological deterioration. Instead of representing world events, these productions express their existence. It is not about the register of the event (related to the file, news, to document and memory but the production of images that make undercovered situations appear, in the shape of photographic testimony.

  14. MODELO DE FUSION DE SCORE UTILIZANDO TEORIA DE LA INFORMACION PARA INTEGRACION DE SISTEMAS DE SIMILITUD DE DOCUMENTOS

    OpenAIRE

    GUERRERO QUICHIZ, GERARDO MANUEL

    2011-01-01

    El presente proyecto de tesis se enmarca dentro del proyecto FONDEF DO8I-1015 llamado DOcument COpy DEtector (DOCODE), cuyo objetivo es desarrollar un sistema de detección de copia escrita. Hoy ya existe una versión 1.0 de DOCODE que incluye búsqueda web a partir de un texto ingresado, sin embargo se está desarrollando la versión 2.0 en la cual se incluirán parseadores, sistemas de similitud de documento, y demás herramientas avanzadas; y es en esta nueva versión que se incluirá el Mode...

  15. Rasgos fonéticos y morfológicos de los documentos alfonsíes

    Directory of Open Access Journals (Sweden)

    Mª Nieves Sánchez González de Herrero

    2002-06-01

    Full Text Available The goal of this paper is to emphasize the phonetic and morphological features of the documents of the Cancillería of Alfonso X, which is labeled and used in the Diccionario Español de Documentos Alfonsíes. A deep analysis of these manuscripts reveal some differences, even if at the beginning of our research we could have an idea of standar vernacular. We can notice particularly these differences in the narratio in which we observe that it have nothing to do not only with the several notaries and no with the origin of the document but with the area which was addressed.

  16. Acceso de los ciudadanos a los documentos como transparencia de la gestión pública

    OpenAIRE

    Giménez-Chornet, Vicent

    2012-01-01

    [ES] La transparencia en las administraciones públicas es posible si los ciudadanos tienen garantizado el acceso a los documentos. En el presente artículo proponemos una definición de la transparencia y analizamos la normativa legal española que trata el derecho de acceso. La transparencia es posible si también las instituciones tienen organizados sus archivos. Proponemos unos requisitos esenciales que deben cumplir la normativa legal y la gestión documental. [EN] Transparency in public ad...

  17. Gestão de documentos no Poder Legislativo: análise do funcionamento de uma Comissão Parlamentar de Inquérito

    Directory of Open Access Journals (Sweden)

    Inaldo Barbosa Marinho Júnior

    2015-09-01

    Full Text Available Estudo de caráter exploratório que visa analisar o funcionamento de uma Comissão Parlamentar de Inquérito da Câmara dos Deputados a partir do ferramental metodológico da gestão de documentos e da arquivologia. A pesquisa foi realizada a partir das fontes primárias do acervo da Comissão Parlamentar de Inquérito da Pirataria de Produtos Industrializados. As unidades da Câmara dos Deputados objeto de análise foram a Coordenação de Arquivo e o Departamento de Comissões. A interpretação dos dados e a discussão teórica apoiaram-se na literatura especializada nas áreas de gestão de documentos, arquivologia, ciência da informação. A implantação da gestão de documentos foi analisada tendo em conta a sua relevância para o alcance da transparência administrativa. Foram analisados os tipos de controle realizados pelos parlamentos e abordadas as principais características das Comissões Parlamentares de Inquérito. Os resultados indicaram que: i a gestão de documentos é uma importante ferramenta de gerenciamento para as modernas administrações; ii a aplicação da gestão de documentos nas Comissões Parlamentares de Inquérito pode contribuir para maior eficácia desses instrumentos legislativos de investigação; iii a implantação de um programa de gestão de documentos possibilita maior acesso do público aos documentos e às informações da instituição.

  18. EVALUACIÓN Y MEJORA DE LA CALIDAD DE LOS DOCUMENTOS DE CONSENTIMIENTO INFORMADO EN NUEVE HOSPITALES DEL SERVICIO MURCIANO DE SALUD

    Directory of Open Access Journals (Sweden)

    José Eduardo Calle-Urra

    2015-01-01

    Full Text Available Fundamentos: Los documentos de consentimiento informado tienen gran importancia en el proceso de información médica. El objetivo de este trabajo fue evaluar los cambios producidos en los niveles de calidad formal de estos documentos como consecuencia de las medidas correctoras puestas en marcha tras la primera evaluación. Métodos: Ciclo completo de evaluación y mejora de la calidad con 4 evaluaciones entre los años 2007 y 2013. Se valoraron 19 criterios en 3.045 documentos pertenecientes a 9 hospitales del Servicio Murciano de Salud. En la primera evaluación se estudiaron todos los documentos y en las restantes una muestra aleatoria. A partir de los resultados de la primera evaluación se pusieron en marcha medidas correctoras. Para valorar su efectividad se calculó el porcentaje de incumplimiento de los criterios y el porcentaje de mejora relativa entre la primera y la última evaluación Para valorar la variabilidad se obtuvo la razón de variación entre hospitales en el promedio de defectos por documento. Resultados: La mejora alcanzada fue del 40,8%. Esta oscilaba entre el 94% en el nombre del centro y el 17,6% en las consecuencias relevantes, siendo las diferencias encontradas en 16 de los 19 criterios estadísticamente significativas. El promedio de defectos por documento descendió de 7,6 a 4,5 con una razón de variación entre hospitales de 8,33. Conclusiones: La mejora alcanzada en la calidad de los documentos de consentimiento informado está relacionada con la efectividad de las medidas correctoras puestas en marcha.

  19. Documentos mambembes: os diferentes suportes de memória em um caso de pesquisa com o circo-teatro

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    Darlan De Mamann Marchi

    2013-09-01

    Full Text Available A diversidade de suportes de memória se coloca como fonte à pesquisa por duas óticas: as inúmeras possibilidades que oferecem e os desafios que as escolhas implicam. Como exemplo disso, aborda-se a pesquisa sobre o Teatro do Bebé, um circo-teatro familiar do Rio Grande do Sul, e que tem se dado através da junção de algumas fontes documentais e fotográficas familiares, anúncios de jornais e reportagens sobre o grupo/família, mas principalmente através da produção de documentos, ou seja, de entrevistas e de pesquisa de campo junto ao espaço da lona onde o grupo mambembe se apresenta. Quando a pesquisa relaciona-se a trajetória de um grupo, ou de uma atividade humana em processo, não tendo como base específica um arquivo ou um espaço fixo organizado que reúna os documentos necessários, ela é também uma forma de unir as diferentes fontes documentais em um acervo específico. O processo de pesquisa torna-se assim, constituidor de um acervo sobre determinado assunto, acervo esse organizado segundo as lógicas e os objetivos do pesquisador.

  20. Documentos arcebispais no Tombo H da catedral de Santiago: Gómez Manrique e Lopo de Mendoza

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    Cabana Outeiro, Alexandra

    2003-12-01

    Full Text Available The cartulary H of Santiago de Compostela's Cathedral -register book compiled by notary Afonso Eanes Jacob-contains documents of the chapter of Compostela dated 1391 to 1409 and includes copies of earlier documents. In this paper, the edition of five documents issued by archbishops Gómez Manrique (1351-1362 and Lope de Mendoza (1399- 1445 and contained in this book is proposed. An introductory note is also included.

    [gl] No Tombo H da Catedral de Santiago de Compostela, libro rexistro elaborado polo notario Afonso Eanes Jacob, recógese documentación do cabido compostelán entre os anos 1391 e 1409, incluíndo tamén traslados de documentos anteriores. Neste artigo faise unha edición de cinco documentos emitidos polos arcebispos Gómez Manrique (1351-1362 e Lope de Mendoza (1399-1445, que se insiren neste libro, achegándose tamén unha nota introductoria.

  1. Políticas de preservação digital para documentos arquivísticos

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    Henrique Machado dos Santos

    Full Text Available Este artigo realiza uma reflexão abrangente sobre as políticas de preservação digital para documentos arquivísticos, com ênfase na manutenção da fidedignidade e na garantia de acesso em longo prazo. Desta forma, são perpassados os seguintes aspectos: a evolução das tecnologias da informação; o advento do documento digital; o uso de padrões abertos; o uso de metadados; os custos relacionados; a segurança; e o planejamento da preservação em longo prazo. A metodologia consiste no levantamento bibliográfico-documental, composto por materiais previamente publicados, dentre eles: livros, teses, dissertações, textos em sites da Internet e artigos em periódicos científicos indexados no Google Scholar. Constitui uma revisão de literatura, que aborda principalmente trabalhos contemporâneos, publicados nos últimos quinze anos, período em que as discussões sobre a preservação digital se acentuaram. Desta forma, os dados coletados são processados através da análise qualitativa, e posteriormente, estruturados em seções temáticas, que apontam os principais entraves teóricos.

  2. Sistema computacional para dosimetria de nêutrons e fótons baseado em métodos estocásticos aplicado a radioterapia e radiologia

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    Bruno Machado Trindade

    2011-04-01

    Full Text Available OBJETIVO: Este artigo mostra um procedimento de conversão de imagens de tomografia computadorizada ou de ressonância magnética em modelo de voxels tridimensional para fim de dosimetria. Este modelo é uma representação personalizada do paciente que pode ser usado na simulação, via código MCNP (Monte Carlo N-Particle, de transporte de partículas nucleares, reproduzindo o processo estocástico de interação de partículas nucleares com os tecidos humanos. MATERIAIS E MÉTODOS: O sistema computacional desenvolvido, denominado SISCODES, é uma ferramenta para planejamento computacional tridimensional de tratamentos radioterápicos ou procedimentos radiológicos. Partindo de imagens tomográficas do paciente, o plano de tratamento é modelado e simulado. São então mostradas as doses absorvidas, por meio de curvas de isodoses superpostas ao modelo. O SISCODES acopla o modelo tridimensional ao código MCNP5, que simula o protocolo de exposição à radiação ionizante. RESULTADOS: O SISCODES vem sendo utilizado no grupo de pesquisa NRI/CNPq na criação de modelos de voxels antropomórficos e antropométricos que são acoplados ao código MCNP para modelar braquiterapias e teleterapias aplicadas a tumores em pulmões, pelve, coluna, cabeça, pescoço, e outros. Os módulos atualmente desenvolvidos no SISCODES são apresentados junto com casos exemplos de planejamento radioterápico. CONCLUSÃO: O SISCODES provê de maneira rápida a criação de modelos de voxels personalizados de qualquer paciente que podem ser usados em simulações por códigos estocásticos tipo MCNP. A combinação da simulação via MCNP com um modelo personalizado do paciente traz grandes melhorias na dosimetria de tratamentos radioterápicos.

  3. Personal monitoring services available at Institute for Radiation Protection of ENEA; Il servizo di dosimetria personale dell'Istituto per la Radioprotezione dell'ENEA

    Energy Technology Data Exchange (ETDEWEB)

    Fantuzzi, E.; Bonarelli, T. [ENEA Centro Ricerche Ezio Clementel, Bologna (Italy). Dipt. Ambiente

    1999-07-01

    Personnel monitoring provides the means to measure and record the radiation doses received by individual workers. The ionising radiation decree (230/95) set out the circumstances when the assessment and recording of person's exposure is legally required. Many employers issue dosemeters to staff even though there is no legal requirement to do so. This may be part of a quality assurance programme or as a reassurance measure. Dosemeter readings will serve to ensure compliance with legal dose limits and assure the employer that radiation exposure is as low as reasonably achievable. The ENEA (National Agency for New Technology, Energy and the Environment) IRP (Institute for Radiation Protection) individual monitoring service has been running for over 30 years. It offers personnel dosemeters which are based on its expertise and backed up by continual research and development. The report provides details of the dosemeters in use at IRP enable to decide which ones most suit the needs and shows IMS's organisation, customer and communications, dose reports form and administrative items. A short mention of future development will also be given. [Italian] La dosimetria individuale fornisce gli strumenti per misurare e registrare le dosi da radiazioni ionizzanti ricevute dai lavoratori esposti. Il decreto legislativo 230/95 stabilisce le circostanze in cui il monitoraggio individuale e' legalmente richiesto. Molti datori di lavoro forniscono dosimetri individuali anche quando non vi e' una richiesta legale spesso per seguire le regole di un programma di assicurazione di qualita' relativo alla radioprotezione o per ottenere una conferma che il principio ALARA sia soddisfatto. Il servzio di dosimetria personale dell'Istituto per la Radioprotezione dell'ENEA e' attivo da oltre 30 anni e offre dosimetri sviluppati sulla propria esperienza nelle tecniche dosimetriche che vengono continuamente aggiornati e adeguati rispecchiando lo stato dell

  4. Diseño de Reglas Gramaticales para Transformar Documentos Técnicos Corporativos Escritos en Lenguaje Natural en Discursos Controlados

    Directory of Open Access Journals (Sweden)

    Carlos Mario Zapata Jaramillo

    2013-04-01

    Full Text Available La educción de requisitos es una de las fases más importantes en el proceso de desarrollo de software. La revisión de documentos es una de las técnicas menos usadas para educir requisitos. La literatura sugiere usarla en esta fase sobre descripciones del dominio y documentos corporativos. Aplicando esta técnica, los analistas pueden extraer conocimiento del dominio e información del negocio. En este artículo se define un marco estructural de un tipo de documento técnico corporativo, relacionado con la especificación de procedimientos. A partir de este marco, se propone un conjunto de reglas gramaticales para transformar ciertas secciones del documento técnico en un discurso en el lenguaje controlado UN-Lencep. Estas reglas se pueden aplicar posteriormente en procesos de educción de requisitos a partir de la técnica de revisión de documentos.

  5. Comentarios al documento : ¿Cuál es el costo de la contaminación ambiental minera sobre los recursos hídricos en el Perú?

    OpenAIRE

    Alfredo Juan Carlos Dammert Lira; Arturo Leonardo Vásquez Cordano; Raúl Lizardo García Carpio; Víctor Raúl Zurita Saldaña; Humberto Ortiz Ruiz; Erix Aldo Ruiz Mondaca

    2011-01-01

    El presente documento realiza una serie de comentarios y observaciones a la investigación de Herrera y Millones (2011) (en adelante, el Documento). El Documento presenta una estimación del costo de la contaminación ambiental sobre los recursos hídricos en el Perú utilizando modelos de frontera de eficiencia y propone un cambio en el diseño del sistema de multas por contaminación en el sector minero. En primer lugar, se analiza el documento desde la perspectiva metodológica así como desde la p...

  6. La gestión de los números internacionales de identificación de documentos:estado de la cuestión

    OpenAIRE

    Orenes, Pilar Beltran; Universidad Rey Juan Carlos; Usero, José Ángel Martínez

    2011-01-01

    La gestión de los estándares de los números internacionales de identificación de documentos está teniendo una serie de consecuencias derivadas directamente del carácter público o privado de la gestión realizada y de los intereses comerciales. En este texto se hace un análisis del estado actual de las gestiones de los principales números de identificación de documentos, de cara a establecer las bases de la, a nuestro juicio, necesaria reflexión que deberían hacer las insti...

  7. ESTUDO PROSPECTIVO DA PRÓPOLIS E TECNOLOGIAS CORRELATAS SOB O ENFOQUE EM DOCUMENTOS DE PATENTES DEPOSITADOS NO BRASIL

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    Bruna Aparecida Souza Machado

    2012-09-01

    Full Text Available A própolis é um produto natural elaborado a partir de secreções de árvores, flores, folhas e pólen, recebendo ainda a adição de substâncias secretadas pelo metabolismo glandular das abelhas. Devido à importância farmacológica, terapêutica, científica e econômica deste produto, o objetivo deste trabalho foi analisar as potencialidades, características e evolução das competências tecnológicas, traduzidas através de dados estatísticos de patentes depositados no Brasil, no que diz respeito aos processos de extração e obtenção de compostos ativos da própolis, bem como suas aplicações industriais a partir da elaboração de novos produtos. O termo documento de patente abrange pedidos de patente publicados ou patentes concedidas. A pesquisa foi realizada a partir de palavras-chave do tema na base de dados do Instituto Nacional de Propriedade Industrial. O primeiro documento de patente identificado foi de 1992, tendo como o país de origem o Japão. Do universo de patentes depositadas 94% são de residentes e 6% de não residentes. Em relação à tecnologia protegida os inventores independentes são os maiores depositantes, seguida das empresas e universidades. Apesar de o Brasil ser um dos maiores exportadores mundiais da própolis, este não é considerado como um mercado atraente e competitivo para a proteção desta tecnologia por outros países.

  8. Documento de consenso para la detección y manejo de la enfermedad renal crónica

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    Alberto Martínez-Castelao

    2014-11-01

    Full Text Available La enfermedad renal crónica (ERC es un importante problema de salud pública que puede afectar en sus diferentes estadios a cerca del 10% de la población española y que supone una elevada morbimortalidad, así como un importante consumo de recursos al Sistema Nacional de Salud. Diez sociedades científicas involucradas en el manejo del paciente renal nos hemos puesto de acuerdo para hacer una puesta al día del anterior documento de consenso sobre ERC de 2007. El presente es la edición abreviada del documento general extenso, que puede ser consultado en las páginas Web de cada una de las sociedades firmantes. Contiene los siguientes aspectos: definición, epidemiología y factores de riesgo de la ERC; criterios de diagnóstico, evaluación y estadificación de la ERC, albuminuria y estimación del filtrado glomerular; concepto y factores de progresión; criterios de derivación a nefrología; seguimiento del paciente, actitudes y objetivos por especialidad; prevención de la nefrotoxicidad; detección del daño cardiovascular; actitudes, estilo de vida y tratamiento: manejo de la hipertensión arterial, dislipidemia, hiperglucemia, tabaquismo, obesidad, hiperuricemia, anemia, alteraciones del metabolismo mineral y óseo; seguimiento coordinado por atención primaria-otras especialidades-nefrología; manejo del paciente en tratamiento renal sustitutivo, hemodiálisis, diálisis peritoneal y trasplante renal; tratamiento paliativo de la uremia terminal. Esperamos que sirva de gran ayuda en el manejo multidisciplinar del paciente con ERC, a la vista de las recomendaciones más actualizadas.

  9. Documentos en el Archivo Histórico Nacional (Madrid sobre el terremoto del 1 de noviembre de 1755

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    Fernando de la TORRE

    2009-11-01

    Full Text Available RESUMEN: En el gran Archivo Histórico Nacional (AHN existen millones de documentos. Los correspondientes a la Sección de Estado no están catalogados. El autor descubrió, en 1979, diversos legajos, mejor, cajas, que contienen importantes noticias sobre los efectos del terremoto de Lisboa, que transcribió y publicó para tres provincias españolas. Más de un millar de ellos corresponden a informaciones sobre el terremoto del 1 de noviembre de 1755. Desde 1990, el autor tiene transcritos y clasificados todos los documentos relacionados (1.020 con muy importantes noticias de los efectos del gran terremoto en 1.228 localidades españolas. Este conjunto documental es el mayor del mundo sobre un terremoto histórico. El presente artículo analiza, brevemente, una amplia gama de particularidades.ABSTRACT: The large «Archivo Histórico Nacional» (the National Historical Archive, Madrid, Spain holds millions of papers, but none of the documents of the State Section are catalogued. In 1979 the author discovered several dossiers (in fact, boxes with more than a thousand important papers concerning the Lisbon earthquake of 1 November, 1755. A few of these documents heve been published previously. Since 1990 the author has classified and transcribed 1.020 documents containing very important news about the effects of the earthquake in 1.228 Spanish towns. This group of documents is the largest in the world about an historical earthquake. In the present paper the author briefly analyses many peculiarities of the documents.

  10. «Documentos en transición»: La legalización ante notario de documentos judíos utilizados por conversos en el pleito por la herencia de Beatriz de Arqueñigo

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    Virto Ibáñez, Juan Jesús

    2012-06-01

    Full Text Available Beatriz de Arqueñigo, called Mazalto before the conversion in 1498 of the Jews of the kingdom of Navarre, brings in 1535 an action over the inheritance of her father in Pamplona’s royal courts, against the heirs of Maria Diez (ol. Astruga Mataron, who had married in 1479 Jaco Farax, later converted as Miguel de Arqueñigo, who was in turn the father of Beatriz, the daughter from his first marriage with Aljohar. During the legal process certain notarial certified documents are submitted, transcribed (or translated from Hebrew letters to Castilian in 1509 and 1525 by a notary from Tudela, Pedro de Agramont. Before 1498, the later had been an scribe of the aljama of the Jews, under the name of Jaco de la Rabiça, and had signed some of these documents. These offer a rare picture of Navarre’s Jews before and after the expulsion or conversion in 1498 and of the transition from Jew to Christian of individual participants in the legal case. It also opens a debate as to the motives of the editor of the pre-1498 documents for his removal of Jewish references.

    Beatriz de Arqueñigo, conocida como Mazaltó hasta la conversión en 1498 de los judíos del reino de Navarra, sostiene en 1535 un pleito por los bienes de la herencia de su padre con los herederos de su madrastra María Díez ante los tribunales reales en Pamplona. Cuando era judía, María se llamaba Astruga Matarón y había casado en 1479 con Jacó Farax, luego Miguel de Arqueñigo, padre de Beatriz, que había sido fruto de un primer matrimonio con Aljohar. Al proceso se presentan algunos documentos, que son transcripción o traducción de otros originalmente redactados en letras hebreas o en hebreo y que habían sido transcritos y legalizados en 1509 y en 1525 por un notario de Tudela, Pedro de Agramont. Con anterioridad a 1498, éste había sido escribano de la aljama de judíos con el nombre de Jacó de la Rabiça. Estos documentos ofrecen una imagen inusual de los judíos de

  11. Biological Monitoring for Plutonium-241; Detection du Plutonium-241 par Controles Biologiques; Dozimetriya Plutoniya-241 v biologicheskikh materialakh; Determinacion del Plutonio-241 en Sustancias Biologicas

    Energy Technology Data Exchange (ETDEWEB)

    Dalton, J. C.; McDonald, B. J.; Barnes, V. [United Kingdom Atomic Energy Authority, Windscale Works, Sellafield (United Kingdom)

    1965-10-15

    maximale admissible (0,9 {mu}Ci). On procede ensuite au dosage des isotopes emetteurs alpha du plutonium en exposant au disque, pendant une semaine, une plaque a emulsion nucleaire qui fait ensuite l'objet d'un examen visuel au microscope. (author) [Spanish] Los autores examinan el origen y las caracteristicas del {sup 241}Pu, prestando especial atencion a los riesgos que entrana para la salud y a los problemas que plantea su determinacion. Describen un aparato de recuento que se esta perfeccionando actualmente en Windscale, dentro del marco de un programa de vigilancia radiologica individual, para la determinacion cuantitativa de bajas actividades de {sup 241}Pu contenido en muestras. En la etapa actual de desarrollo, dicha tecnica es, por lo menos, tan sensible como los otros metodos conocidos y al mismo tiempo mas simple, rapida y economica. Ha sido ideada principalmente para su utilizacion en analisis de orina a fin de completar los datos ya obtenidos por determinacion autorradiografica de los emisores alfa isotopos del plutonio. La misma fuente en forma de disco se emplea para la determinacion del {sup 241}Pu, lo que simplifica la preparacion. Por intercambio anionico se procede primero a separar los isotopos del plutonio de la muestra de orina, o de otra sustancia biologica, en estado de gran pureza radioquimica. A continuacion se depositan por electrolisis sobre un disco de acero inoxidable. El recuento directo del espectro beta blando del {sup 241}Pu (energia maxima 20 keV, periodo 13,3 anos) se efectua con ayuda de un dispositivo de anticoincidencia formado por un contador proporcional de corriente gaseosa, de pequenas dimensiones, protegido por un contador de centelleo anular de material plastico. Gracias a las dimensiones del contador, todas las particulas beta del plutonio son absorbidas en el interior del aparato, mientras que las particulas alfa disipan cerca de la mitad de su energia en el material plastico. La geometria para ambas radiaciones es casi de 2

  12. Aplicativo para dosimetria interna usando a distribuição biocinética de fótons baseada em imagens de medicina nuclear

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    Viriato Leal Neto

    2014-10-01

    Full Text Available Objetivo: Este artigo apresenta uma forma de se obterem estimativas de dose em pacientes submetidos a tratamentos radioterápicos a partir da análise das regiões de interesse em imagens de medicina nuclear. Materiais e Métodos: Foi desenvolvido o software denominado DoRadIo (Dosimetria das Radiações Ionizantes, que recebe as informações sobre os órgãos fontes e o órgão alvo e retorna resultados gráficos e numéricos. As imagens de medicina nuclear utilizadas foram obtidas de catálogos disponibilizados por físicos médicos. Nas simulações utilizaram-se modelos computacionais de exposição constituídos por fantomas de voxels acoplados ao código Monte Carlo EGSnrc. O software foi desenvolvido no Microsoft Visual Studio 2010 com o modelo de projeto Windows Presentation Foundation e a linguagem de programação C#. Resultados: Da aplicação das ferramentas foram obtidos: o arquivo para otimização das simulações Monte Carlo utilizando o EGSnrc, a organização e compactação dos resultados dosimétricos com todas as fontes, a seleção das regiões de interesse, a contagem da intensidade dos tons de cinza nas regiões de interesse, o arquivo das fontes ponderadas e, finalmente, todos os resultados gráficos e numéricos. Conclusão: A interface de usuários pode ser adaptada para uso em clínicas de medicina nuclear como ferramenta computacional auxiliar na estimativa da atividade administrada.

  13. Ciudades y aldeas del Nuevo Mundo en los documentos de los mercaderes y viajeros italianos del Quinientos

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    Orlandi, Angela

    2016-06-01

    Full Text Available The aim of this paper is to examine the formation of urban and rural centers and agricultural landscapes in the New World through the accounts of Italian travelers to the Americas during the sixteenth century, whereby they described the building techniques used in towns and villages. Although not exhaustive, the picture that emerges presents an interesting perspective on the architectural style of houses, manufacturing facilities and public or religious buildings, which in some cases seem to be by inspired by the Italian Renaissance.Se intenta aclarar la formación de los centros urbanos y agrícolas del Nuevo Mundo a través de los documentos de los viajeros italianos en las Américas durante el siglo XVI. Los viajeros describían los procesos constructivos de ciudades y aldeas. De estos relatos emerge una situación que, aunque no exhaustiva, presenta interesantes aspectos de las arquitecturas de las casas, de las estructuras productivas y de edificios públicos o religiosos que, en algunos casos parecían influenciadas por el gusto del Renacimiento italiano.

  14. DOCUMENTO: BREVES REFLEXIONES SOBRE LA INVESTIGACIÓN CUALITATIVA PARA LA FORMACIÓN DEL TRABAJADOR SOCIAL

    Directory of Open Access Journals (Sweden)

    Nilsa Burgos Ortiz

    2009-08-01

    Full Text Available Este documento presenta, en primera instancia, un resumen sobre la trayectoria de la investigación social en América, en su relación con la disciplina de Trabajo Social; y en segunda instancia, una experiencia de aplicación de la investigación cualitativa en un estudio adelantado por el primer grupo de estudiantes doctorales en la Escuela Graduada de Trabajo Social de la Universidad de Puerto Rico. Este grupo estudió la violencia en una escuela pública del área metropolitana de San Juan y examinó una de las políticas sociales pertinente desde la perspectiva teórica del construccionismo social. El grupo de estudiantes se organizó en cuatro equipos de trabajo y utilizó entrevistas cualitativas, grupos focales y la observación para la recopilación de datos. El ejercicio permitió concluir que la aplicación de la metodología cualitativa para el estudio de problemas sociales, así como para el análisis de política social es de gran relevancia en la práctica profesional del trabajo social.

  15. Judeus no Brasil Imperial: uma pesquisa nos Documentos e Noticiário Carioca da Época

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    Frida Flaksberg

    1977-09-01

    Full Text Available WOLFF, Egon e Frieda. Judeus no Brasil Imperial: uma pesquisa nos Documentos e Noticiário Carioca da Época. São Paulo: Centro de Estudos Judaicos da Universidade de São Paulo, 1975. No 1. 549 pp. (4a. parágrafo do texto Esta obra tem como meta o levantamento de fontes para o estudo dos judeus no Brasil Imperial. Ela apresenta um caráter inédito o qual pode ser apreendido nas próprias palavras do Prof. Dr. Eurípedes Simões de Paula:  "o caráter inédito dos trabalhos consiste justamente no fato de que o período do nosso Império ainda não foi até agora devidamente estudado sob o ângulo da presença dos judeus e sua participação social e econômica naquele período. É importante e necessário era que se fizesse antes de tudo uma avaliação básica das fontes disponíveis para os futuros estudiosos".

  16. Reflexões sobre o Uso de Documentos de Patentes em Cursos de Graduação

    Directory of Open Access Journals (Sweden)

    Maria Cristina Comunian Ferraz

    2008-01-01

    Full Text Available O presente artigo tem como objetivo principal apresentar considerações sobre o uso da informação patentária por alunos de graduação. Apresenta, como exemplo de inclusão do tema no âmbito acadêmico, a Atividade Curricular de Integração entre Ensino, Pesquisa e Extensão desenvolvida na Universidade Federal de São Carlos, com foco na recuperação e uso da informação patentária no Brasil. O emprego de informações contidas em documentos de patentes nas diversas atividades dos cursos de graduação é recomendado como forma de incentivar a utilização dessa importante fonte de informação tecnológica.The main aim of this article is to present considerations regarding the use of patent information by undergraduate students. As an example of inclusion of this theme in the academic field, it presents the Curricular Activity of Integration between Teaching, Research and Outside Activities with the community developed at the Federal University of São Carlos, focusing on the retrieval and use of patent information in Brazil. The use of information contained in patent documents in the various activities of the undergraduate courses is recommended as a way of stimulating the use of this important source of technological information.

  17. Scientific production of the Radioprotection and Dosimetry Institute (IRD): preliminary bibliometric evaluation of the journal articles; Producao cientifica do Instituto de Radioprotecao e Dosimetria (IRD): avaliacao bibliometrica preliminar dos artigos de periodicos

    Energy Technology Data Exchange (ETDEWEB)

    Gusmao Pedrini, A de [Instituto de Radioprotecao e Dosimetria (IRD), Rio de Janeiro, RJ (Brazil); [Universidade do Estado, Rio de Janeiro, RJ (Brazil). Inst. de Biologia; [Universidade Santa Ursula, Rio de Janeiro, RJ (Brazil). Centro de Ciencias Biologicas

    1994-12-31

    A total of 114 articles (1974-1991, this last year the most productive) in 28 periodicals were published. The periodical core production is made up of: Health Physics, Radiation Protection Dosimetry, Radioprotecao e Dosimetria, Radiologia Brasileira. 53% were written in cooperation with 33 institutions. The 155 authors and 376 authorship were mainly in collective and triple-authorship articles. Mean productivity/author was 2.8 articles which is lower than that of Price. The most productivity author produced 14 articles + 19 co-authors in 7 periodicals on environmental radiation protection while 88 authors produced 1 article. The productive elite (12 authors) accounted for 72 articles, 26% above the average according to Lotka, with 111 out of a total of 376 authorships in 20 periodicals. The elite forms an inter departmental communication network with authors who write about environmental, occupational and individual radiation protection. (author). 17 refs, 1 tab.

  18. La gestión de los números internacionales de identificación de documentos:estado de la cuestión

    Directory of Open Access Journals (Sweden)

    Pilar Beltran Orenes

    2011-04-01

    Full Text Available La gestión de los estándares de los números internacionales de identificación de documentos está teniendo una serie de consecuencias derivadas directamente del carácter público o privado de la gestión realizada y de los intereses comerciales. En este texto se hace un análisis del estado actual de las gestiones de los principales números de identificación de documentos, de cara a establecer las bases de la, a nuestro juicio, necesaria reflexión que deberían hacer las instituciones públicas para poder llevar a cabo el control bibliográfico de la producción a escala mundial.

  19. Caballero : documentos de identidad

    Directory of Open Access Journals (Sweden)

    Santiago Londoño Vélez

    1992-01-01

    Full Text Available Me tocó ser así. Luis Caballero, José Hernández. Editorial La Rosa, Bogotá, 1986. Luis Caballero. Luis Caballero, Álvaro Medina. Galeria Garcés Velázquez, Bogotá, 1990. Luis Caballero, retrospectiva de una confesión. Carolina Ponce de León, Beatriz González, Marta Segura. Biblioteca Luis-Angel Arango, Bogotá, 1991.

  20. Documentos de la convención europea de la construcción metálica

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    Editorial, Equipo

    1967-04-01

    Full Text Available Following the previous policy of «Informes de la Construcción», we are pleased to publish in this issue three important documents approved by the last General Assemby of the European Convention on Metalic Construction. This organisation carries out in the field of metalic structures a function which is similar to that fulfilled by the CEB in relation to concrete structures. The publication is expressly approved by the Metal Syndicate, which is the Spanish body at the Convention. The translation has been done by Dr. civil engineer Juan Batanero, who is representative on the I, VIII and XII Working Committees of the Convention.Siguiendo la línea ya establecida anteriormente por «Informes de la Construcción», nos complacemos hoy en publicar tres importantes documentos aprobados por la última Asamblea Generad de la Convención Europea de la Construcción Metálica, Asociación que desempeña, dentro del campo de las estructuras de acero, un papel semejante al que cumple el C.E.B. en el dominio de las estructuras de hormigón. La publicación está expresamente autorizada por el Sindicato del Metal, que es el miembro español de la Convención. La traducción ha sido preparada por el Dr. Ingeniero de Caminos D. Juan Batanero, vocal de las Comisiones de Trabajo I, VIH y XII de la Convención.

  1. Plumas para el sol: commentarios a un documento sobre cazadores y cotos de caza en el antiguo Perú

    Directory of Open Access Journals (Sweden)

    1980-01-01

    Full Text Available Cet article traite brièvement des activités cynégétiques dans l'ancient Pérou. L'analyse du conflit entre les curacas de Atun Colla et Mañazo nous fait découvrir des fragments importants d'un vaste réseau d'activités liées à la chasse, ses privilèges et ses obligations. La recompilation analytique des chroniques et du document d'Atun Colla élargit notre vision des relations socio-économiques à l'intérieur de l'Etat inca. El presente trabajo es una primera indagación sobre la actividad cinegética en el Antiguo Perú. A través del litigio entre los curacas de Atun Colla y Mañazo se descubre importantes fragmentos de una vasta red de acciones conectadas a la caza y a los privilegios y obligaciones en que esta actividad estaba enmarcada. Los autores han recopilado analíticamente la información de las crónicas, a la que agregan el referido documento de Atun Colla, cuyas evidencias nos amplían el panorama de las relaciones socio-económicas al interior del Estado inca. This article is a first approach to hunting activities in ancient Peru. From the analysis of legal suits between the curacas of Atun Colla and Mañazo, very important fragments of a large network of activities related to hunting and its privileges and obligations. The authors have collated analytically from the chronicles and the Atun Colla document, both of which broaden our understanding of social and economic relationships within the Inca state.

  2. A fotografia nos arquivos: produção e sentido de documentos visuais Photographs in archives: the production and meaning of visual records

    Directory of Open Access Journals (Sweden)

    Aline Lopes de Lacerda

    2012-03-01

    Full Text Available Discute, com base nos debates travados pela teoria e metodologia arquivística, o estatuto da fotografia como documento de arquivo. Mediante a análise de alguns atributos e características do registro fotográfico, é destacada sua particularidade como documento, bem como a necessidade de um enfoque contextual de sua produção e de seus papéis no processo de constituição dos próprios arquivos. O objetivo do trabalho é questionar os métodos tradicionais de organização de fotografias em arquivos, que consideram esses documentos desvinculados do restante da documentação e que valorizam os conteúdos factuais das imagens sobre quaisquer outros elementos de significação.Based on discussions dealing with archival theory and methodology, the intention is to discuss the status of the photograph as an archival record. By means of the analysis of some attributes and characteristics of the photographic record, its specificity as a record is highlighted, as well as the need for a contextual approach to its production and its roles in the process of constituting the archives per se. The scope of this work is to question traditional methods of organizing photographs into archives, which perceive these records as being removed from the remaining documentation and which value the factual content of the images above any other elements of meaning.

  3. La compresión de frases: un recurso para la optimización de resumen automático de documentos

    Directory of Open Access Journals (Sweden)

    Alejandro Molina

    2011-01-01

    Full Text Available El objetivo de este trabajo de investigación es confirmar si es adecuado emplear la compresión de frases como recurso para la optimización de sistemas de resumen automático de documentos. Para ello, en primer lugar, creamos un corpus de resúmenes de documentos especializados (artículos médicos producidos por diversos sistemas de resumen automático.  Posteriormente realizamos dos tipos de compresiones de estos resúmenes.  Por un lado, llevamos a cabo una compresión manual, siguiendo dos estrategias: la compresión mediante la eliminación intuitiva de algunos elementos de la oración y la compresión mediante la eliminación de ciertos elementos discursivos en el marco de la Rhetorical Structure Theory (RST.  Por otro lado, realizamos una compresión automática por medio de varias estrategias, basadas en la eliminación de palabras de ciertas categorías gramaticales (adjetivos y adverbios y una baseline de eliminación aleatoria de palabras.  Finalmente, comparamos los resúmenes originales con los resúmenes comprimidos, mediante el sistema de evaluación Rouge. Los resultados muestran que, en ciertas condiciones, utilizar la compresión de frases puede ser beneficioso para mejorar el resumen automático de documentos.

  4. Desarrollo de una aplicación para la gestión, clasificación y agrupamiento de documentos económicos con algoritmos bio-inspirados

    OpenAIRE

    Cobo Ortega, Ángel; Rocha Blanco, Eliana Rocío

    2007-01-01

    Este trabajo describe el desarrollo de una aplicación Web que utiliza técnicas bio-inspiradas para clasificar y agrupar colecciones multilingües de documentos en el campo de la economía y los negocios. La aplicación identifica grupos relacionados de documentos económicos, escritos en español e ingles, utilizando algoritmos de clustering inspirados en el comportamiento de las colonias de hormigas. Para la generación de una representación vectorial de los documentos que resulte independiente de...

  5. Identification of related multilingual documents using ant clustering algorithms Identificación de documentos multilingües relacionados mediante algoritmos de clustering de hormigas

    Directory of Open Access Journals (Sweden)

    Ángel Cobo

    2011-12-01

    Full Text Available This paper presents a document representation strategy and a bio-inspired algorithm to cluster multilingual collections of documents in the field of economics and business. The proposed approach allows the user to identify groups of related economics documents written in Spanish and English using techniques inspired on clustering and sorting behaviours observed in some types of ants. In order to obtain a language independent vector representation of each document two multilingual resources are used: an economic glossary and a thesaurus. Each document is represented using four feature vectors: words, proper names, economic terms in the glossary and thesaurus descriptors. The proper name identification, word extraction and lemmatization are performed using specific tools. The tf-idf scheme is used to measure the importance of each feature in the document, and a convex linear combination of angular separations between feature vectors is used as similarity measure of documents. The paper shows experimental results of the application of the proposed algorithm in a Spanish-English corpus of research papers in economics and management areas. The results demonstrate the usefulness and effectiveness of the ant clustering algorithm and the proposed representation scheme.Este artículo presenta una estrategia de representación documental y un algoritmo bioinspirado para realizar procesos de agrupamiento en colecciones multilingües de documentos en las áreas de la economía y la empresa. El enfoque propuesto permite al usuario identificar grupos de documentos económicos relacionados escritos en español o inglés usando técnicas inspiradas en comportamientos de organización y agrupamiento de objetos observados en algunos tipos de hormigas. Para conseguir una representación vectorial de cada documento independiente del idioma, se han utilizado dos recursos lingüísticos: un glosario económico y un tesauro. Cada documento es representado usando

  6. Diagnóstico y tratamiento de la hipercolesterolemia familiar en España: documento de consenso

    Directory of Open Access Journals (Sweden)

    Pedro Mata

    2015-01-01

    Full Text Available La hipercolesterolemia familiar (HF es un trastorno genético frecuente que se manifiesta desde el nacimiento y que causa un aumento en los niveles plasmáticos de colesterol-LDL (cLDL, xantomas y enfermedad coronaria prematura. Su detección y tratamiento precoz reduce la morbimortalidad coronaria. A pesar de la disponibilidad de un tratamiento eficaz, la HF está poco diagnosticada y tratada. La identificación de los casos índices y la posterior detección en cascada familiar utilizando los niveles de cLDL y la detección genética es la estrategia más coste-efectiva para la detección de nuevos casos. El tratamiento crónico con estatinas ha disminuido el riesgo cardiovascular a los niveles de la población general. Los objetivos en cLDL son < 130 mg/dl en los niños y adultos jóvenes, < 100 mg/dl en los adultos y < 70 mg/dl en los adultos con enfermedad coronaria conocida o diabetes. En la mayoría de los pacientes es difícil conseguir estos objetivos, por lo que puede ser necesario el tratamiento combinado con ezetimiba u otros fármacos. Cuando no se alcanzan los objetivos con el máximo tratamiento farmacológico tolerado, una reducción de cLDL ≥ 50% puede ser aceptable. La LDL-aféresis es útil en los pacientes homocigotos y en los heterocigotos graves resistentes al tratamiento. Este documento proporciona recomendaciones para el diagnóstico, cribado y tratamiento de la HF en niños y adultos, así como consejos específicos para los especialistas clínicos y médicos de atención primaria con el objetivo de mejorar el cuidado de los pacientes y reducir su carga de enfermedad cardiovascular.

  7. Identificación de socios tecnológicos a partir de redes sociales en documentos de patentes

    Directory of Open Access Journals (Sweden)

    Gerardo Luís Angulo Cuentas

    2014-01-01

    Full Text Available Este artículo presenta la construcción de una metodología basada en el análisis de redes sociales en documentos de patentes, que sirve para que las Instituciones de Educación Superior y Centros de Investigación, que buscan incrementar sus capacidades científicas y tecnológicas puedan identificar socios estratégicos, además del comportamiento de los mismos y las posibles barreras de entrada a sus redes sociales. El estudio fue elaborado a partir del análisis de 141.348 patentes del periodo entre 1980 a 2011, obtenidos mediante un proceso de búsqueda en ESPACENET y como soporte al proceso de análisis se definieron las aplicaciones UCINET y TouchgraphNavigator. Para los respectivos análisis, fue necesaria la implementación de indicadores usados en el análisis de patentes, de redes sociales y cienciometría. Finalmente el estudio permitió la identificación de dos socios potenciales; uno en el entorno universidad y otro en el entorno empresa.Palabras Clave: Redes sociales; Análisis de patentes; Socio clave; Entorno Universidad-Empresa.Technology partners’ identification through social network analysis on patent documentsAbstractThis paper presents a methodology based on patents social network analysis for Higher Education Institutions and Research Centres, looking to increase their scientific and technological capabilities through identify strategic partners, they behavior and possible entry barriers to their social networks. This study analysed of 141.348 patents from 1980 to 2011 obtained through a search process at ESPACENET and used TouchgraphNavigator© and UCINET© for supporting the analysis process. Also it was necessary to implement indicators used in patent analysis, social networks and scientometrics. Finally, the study allowed the identification of two potential partners, one in the university environment and other in the business environment.Keywords: Social networks; Patents analysis; Key partner; Academia

  8. La nueva comunicación eclesial a la luz de los documentos magisteriales del lustro 1997-2002

    Directory of Open Access Journals (Sweden)

    Hugo Tagle

    2003-01-01

    Full Text Available RESUMEN Las afirmaciones sobre un cambio epocal a raíz de la explosión de los medios de comunicación no exageran. El fenómeno descrito por el teórico de las comunicaciones McLuhan sobre la "aldea global" hace algunos decenios se hacen día a día realidad. No nos extraña poder ver el mundial de fútbol en Corea, los juegos olímpicos en Suiza o que el Papa le hable a mil millones de personas simultáneamente en su mensaje de Navidad. Podemos trasladar una biblioteca entera de un país a otro o "bajarla" de Internet en cosa de minutos. Los cambios comunicacionales son de tal envergadura que se habla de una revolución como la que experimentó la humanidad a fines del siglo XIX con la revolución industrial. Y eso que nos encontramos recién en sus comienzos(22. Los continuos cambios en este campo de las ciencias tan gravitante ha gatillado una serie de documentos del magisterio, donde la Iglesia ha tomado postura ante ellos y dado valiosas orientaciones sobre su uso y validez. Sobre estos aspectos trataremos en las próximas páginas.The assertions about an era change caused by the explosion of the media, are not an exaggeration. The phenomenon described some decades ago by the media theorist McLuhan on the `global village' are a reality today. We are no longer surprised to watch the football world cup in Korea, the Olympic games in Switzerland or the Pope giving his Christmas message to millions of people simultaneously. In the Internet, we can `download' whole libraries from other countries in a matter of minutes. The changes in communications are such, that they are said to match the revolution the humanity went through at the end of the XIX century with the Industrial Revolution. Nevertheless, these changes are only in their early stages. The ongoing shifts in this field have encouraged the Magisterium to publish a series of documents. In them, the Church has adopted a position and has given valuable orientations on their use and

  9. Analisis del contenido curricular de los Documentos Normativos del Programa de Ciencias en el area de biologia para la escuela superior del sistema de educacion publica de Puerto Rico: 1993-2012

    Science.gov (United States)

    Davila Montanez, Melissa

    Esta investigacion de naturaleza cualitativa se ocupo de realizar un analisis de contenido documental de los Documentos Normativos del Programa de Ciencias en el area de biologia de la escuela superior del sistema de educacion publica de Puerto Rico del periodo 1993-2012. Los documentos analizados fueron: Guia Curricular, 1995; Marco Curricular, 2003; Estandares de Excelencia, 1996, 2000 y Estandares de Contenido y Expectativas de Grado, 2007. Se indago si hubo cambios en significados en los Componentes Estructurales: Naturaleza de la ciencia, Paradigmas para la ensenanza de la ciencia, Funcion del curriculo formal, Mision de la ensenanza de la ciencia; Contenidos, destrezas y competencias, Estrategias de ensenanza y Evaluacion/Assessment del aprendizaje. El analisis sugiere que no hubo cambios sustanciales en los significados de los Componentes Estructurales. Los documentos estudiados muestran mayormente caracteristicas similares, aunque los documentos mas recientes eran mas descriptivos, explicativos y especificos.

  10. Desarrollo de una aplicación para la gestión, clasificación y agrupamiento de documentos económicos con algoritmos bio-inspirados

    Directory of Open Access Journals (Sweden)

    Rocha Blanco, Rocío

    2007-01-01

    Full Text Available Este trabajo describe el desarrollo de una aplicación Web que utiliza técnicas bio-inspiradas para clasificar y agrupar colecciones multilingües de documentos en el campo de la economía y los negocios. La aplicación identifica grupos relacionados de documentos económicos, escritos en español e ingles, utilizando algoritmos de clustering inspirados en el comportamiento de las colonias de hormigas. Para la generación de una representación vectorial de los documentos que resulte independiente del idioma, se utilizan varios recursos lingüísticos y herramientas de procesamiento de documentos textuales. Cada documento es representado utilizando cuatro vectores de rasgos independientes del idioma, y la similitud entre ellos es calculada mediante combinaciones lineales convexas de las similitudes de esos vectores de rasgos. El trabajo presenta resultados experimentales obtenidos en la clasificación de un corpus de 250 documentos científicos en diversas áreas de la economía y administración de empresas.

  11. Los documentos y archivos. Una necesaria revisión histórica para afrontar el reto de la e-administración pública

    Directory of Open Access Journals (Sweden)

    Fernando Sabés Turmo

    2008-05-01

    Full Text Available ResumenLa transformación de la administración tradicional hacia la e-administración tiene importantes consecuencias en diferentes ámbitos, entre ellos, en los documentos y los archivos. La creación del documento y del archivo electrónico pone en duda muchas de las características que deben cumplir cualquier documento o archivo en papel. El repaso histórico a la creación, conservación de documentos y archivos y a los cambios o problemas que generan la apariciónde la Administración Electrónica será objeto de estudio en este artículo. El trabajo se centra en una revisión histórica de ambos términos hasta llegar a la transformación telemática. El análisis se realiza en el ámbito español por lo que las definiciones de archivo y documento electrónico se tomarán de Ley 11/2007, de 22 de junio, de acceso electrónico de los ciudadanos a los Servicios Públicos, una de las normas aprobadas para impulsar la e-administración en España. De todos modos, apuntar que la apuesta por la e-administración cambia sustancialmente la definición histórica de documento y archivo porque aspectos como la autenticidad, unidad, conservación pueden estar en entredicho en la nueva era digital.AbstractThe transformation of traditional Government towards eGovernment bears noteworthy consequences in several areas, as in documents and files. The creation of electronic documents and files shades doubt over many requirements of hard-copy documents or files. This paper will analyse the historical reviews of creation and conservation of documents and files, as well as the changes and problems brought about by the emergence of eGovernment. This research will present a historical overview of both terms until the arrival of telematic transformation. Since this analysis will be carried out in Spain, definitions as for document and file will be those approved by the Bill 11/2007, 22nd June, of citizen’s e-access to Public Services, one of the many bills

  12. Documento de Referencia Para la elaboración deEstudios de Impacto Ambiental (EsIA) en Zonas Marino Costeras y Aguas Continentales

    OpenAIRE

    2010-01-01

    El objetivo del documento referencia es apoyar al personal técnico de la Autoridad de los Recursos Acuáticos de Panamá (ARAP) y a los usuarios que tienen la responsabilidad de elaborar estudios ambientales, mediante metodologías, criterios e indicadores, que adecuen los contenidos establecidos por el Decreto 123 de 2009 referente a los Estudios de Impacto Ambiental de proyectos, en zonas marino‐costeras y aguas continentales. En particular, se trata de: (i) indicar los fundamentos científi...

  13. Documento de consenso sobre el abordaje de la enfermedad de Chagas en atención primaria de salud de áreas no endémicas

    Directory of Open Access Journals (Sweden)

    Carme Roca Saumell

    2015-05-01

    Se han elaborado guías de detección de Trypanosoma cruzi en circunstancias específicas (bancos de sangre, maternidades, coinfección con el VIH, trasplante de órganos; pero detectamos falta de información dirigida a los profesionales de atención primaria. Para facilitar la detección y manejo de esta enfermedad se consideró la necesidad de realizar este documento, redactado y consensuado por médicos de familia, pediatras de atención primaria y especialistas en salud internacional.

  14. Las nuevas tecnologías en la administración de justicia. La validez y eficacia del documento electrónico en sede procesal

    OpenAIRE

    Jaume Bennasar, Andrés

    2009-01-01

    La tesis se encarga de analizar, por un lado, la integración y el desarrollo de las nuevas tecnologías en la Administración de Justicia; y, por otro, los parámetros que constituyen la validez y eficacia del documento electrónico. La primera cuestión se centra en la configuración de los Sistemas de Información de la Oficina Judicial y del Ministerio Fiscal, así como de la informatización de los Registros Civiles, donde el art. 230 LOPJ es la pieza clave. Se estudian sus programas, aplicaciones...

  15. Evolución de un algoritmo de ranking para documentos científicos del área de las ciencias de la computación

    OpenAIRE

    Kuna, Horacio Daniel; Martini, Esteban; Rey, Martín

    2014-01-01

    Un metabuscador es un tipo de sistema software utilizado para la recuperación de información, se caracteriza por operar con resultados obtenidos a partir de motores de búsqueda tradicionales y por estructurarse con elementos desarrollados a medida para un contexto de funcionamiento específico. Una de las cuestiones de diseño que resulta clave, es la fusión y el ordenamiento de los resultados provenientes de las diferentes fuentes de documentos. Este trabajo presenta una evolución de un algori...

  16. Comentarios sobre el documento de la UNESCO “Replantear la educación. ¿Hacia un bien común mundial?”.

    OpenAIRE

    Pinto-Guerra, Gustavo

    2016-01-01

    La Unesco, a finales del 2015, en el documento “Replantear la educación ¿Hacia un bien común mundial?”, dimensiona las características para el funcionamiento y propósito del sistema educativo a nivel mundial, basadas en el fortalecimiento del respeto a las diversidades y las necesidades del contexto particular en el que se desarrollan los contenidos educativos. Esto solo es posible si se fortalecen valores cooperativos como, por ejemplo, la solidaridad, y se elimina la idea de la competencia,...

  17. La realidad virtual y el análisis científico: De la nube de puntos al documento analítico

    Directory of Open Access Journals (Sweden)

    Mercedes Farjas

    2011-05-01

    Full Text Available Desde la Topografía hemos estado trabajando en obtener la modelización tridimensional de elementos arqueológicos haciendo uso de los sistemas láser escáner de corto, medio y largo alcance. Hemos efectuado el modelado de piezas arqueológicas para museos, levantamientos de yacimientos para equipos científicos y documentación general de áreas de interés cultural. En este artículo pretendemos exponer cómo habiendo llegado a un punto de vista lleno de escepticismo, en el que se podía pensar que la realidad virtual había encontrado un límite en la representación de la arqueología, se puede iniciar un nuevo camino. Proponemos una búsqueda de nuevos modos y procedimientos de análisis con la información recopilada, en definitiva de nuevos documentos para la interpretación científica de la arqueología que participen en la creación de conocimiento, desde las nubes de puntos adquiridas en campo. En este trabajo exploramos los documentos de análisis que son utilizados actualmente en el proceso de creación de modelos de realidad virtual e iniciamos la búsqueda de nuevos planteamientos.

  18. Contribuições de Michel Foucault para analisar documentos e arquivos na judicialização/jurisdicionalização

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    Flávia Cristina Silveira Lemos

    2014-09-01

    Full Text Available Nesse artigo pretendemos ressaltar a produção histórica encontrada em arquivos e documentos, bem como as práticas de generalização de uma sociedade punitiva no âmbito das relações entre normas e leis, e também do poder, direito e verdade, de acordo com estudos de Michel Foucault a respeito da soberania jurídica, da disciplina, da biopolítica e da segurança como dispositivo político de governo das condutas. Na atualidade o uso dos documentos e de arquivos para criminalizar, encarcerar e segregar os desviantes sociais é uma prática cotidiana, e funciona pelo dispositivo de confissão nas adjacências do Poder Judiciário, operando as noções de risco e perigo, em termos de biopolítica. Já a escrita disciplinar aciona a constituição de casos e dossiês, por meio dos exames, das observações vigilantes e da sanção normalizadora, em uma microeconomia penal. é relevante criticar essas práticas e pensar campos de possibilidade de resistência a essas escritas de uma memória das infâmias na judicialização da vida.

  19. A RELAÇÃO DOS PROFESSORES DA EDUCAÇÃO BÁSICA COM OS DOCUMENTOS DA POLÍTICA EDUCACIONAL: QUE PISTAS REVELAM SOBRE A FORMAÇÃO DOCENTE

    Directory of Open Access Journals (Sweden)

    Vera Regina Santos

    2016-01-01

    Full Text Available Este artigo apresenta resultados de uma pesquisa de cunho qualitativo que buscou identificar os significados que emergem da relação entre os documentos curriculares gestados em nível governamental e as concepções e práticas pedagógicas dos professores e professoras no âmbito da escola. Partiu do pressuposto de que os sujeitos estão ativos nos processos sociais (CHIZZOTTI, 2006 e de que o documento curricular estruturado em instâncias governamentais, embora pretenda constituir-se no documento de currículo a orientar toda uma rede de ensino, não tem como prever situações e questões que surgirão no desenrolar do trabalho (BALL, 1997. Focalizou o ciclo de alfabetização da rede pública de ensino do município do Rio de Janeiro, que instituiu, no ano de 2012, a Casa de Alfabetização, agrupando os três primeiros anos do Ensino Fundamental. Para a coleta de dados, o trabalho valeu-se da análise de documentos, de entrevistas e da observação participante. O estudo concluiu que as professoras fazem uma leitura crítica dos documentos da política educacional e encontrou, na formação docente, um dos elementos que ajudaram a compreender aquela leitura.

  20. O documento telemático como meio de prova, segundo as disposições do CPC e CC brasileiros

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    Marcos Wachowicz

    2006-06-01

    Full Text Available O advento da Revolução da Tecnologiada Informação e as novidades tecnológicas deladecorrentes, como a internet, acarretam umacrescente utilização de meios tecnológicos narealização do comércio eletrônico, atividade estaque tem como produto ou resultado a formalizaçãode um documento telemático. O tema central desteestudo se refere à possibilidade de aceitação dodocumento telemático como meio de provasegundo as disposições do art. 364 e seguinte doCódigo de Processo Civil de 1973 e das inovaçõestrazidas ao instituto da prova pelo novo CódigoCivil de 2002 ao disciplinar sobre a prova do fatojurídico nos arts. 212 e seguinte. Completamentenovo ao Direito, o documento eletrônicocarecendo, a princípio, de reconhecimento etratamento legislativo no Brasil, foi analisado pelateoria geral das provas em juízo. Foram, ainda,mensurados os aspectos da validade e segurançajurídica do documento telemático, concluindo-seque, apenas com a análise e adaptações dosconceitos e requisitos constantes do Código de Processo Civil e do Código Civil, que é possível asua equiparação ao documento tradicional, deforma que sobre aquele recaiam as normasprevistas para este.The advent of the Revolution of theTechnology of the Information and decurrent thetechnological new features of it, as the Internet,they cause an increasing use of technological waysthe accomplishment it electronic commerce,activity this that has as product or resulted theformalização of a telemático document. The centralsubject of this study if relates to the possibilityof acceptance of the telemático document asevidence according to disposals of art. 364following e of the Code of Civil action of 1973and of the innovations brought to the institute ofthe test for the new Civil Code of 2002 whendisciplining on the test of the legal fact in arts.212 and following. Completely new to the Right,the electronic document lacking, the principle, ofrecognition and

  1. El método biográfico en investigación social: potencialidades y limitaciones de las fuentes orales y los documentos personales

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    Sanz Hernández, Alexia

    2005-06-01

    Full Text Available The biographical reconstruction is a game of intersubjectivities that emerges essentially from the person and her testimony, either oral or written. Memory, identity and sociability are also devices from which there are to understand the potentialities and limitations of the oral and material documents of life, sources on which the biographical investigation is based. This paper is a didactic essay about how to make it.

    La reconstrucción biográfica es un juego de intersubjetividades que emerge esencialmente de la persona y de su testimonio, ya sea oral u escrito. Memoria, identidad y sociabilidad son igualmente dispositivos desde los cuales hay que entender las potencialidades y limitaciones de los documentos orales y materiales de vida, fuentes sobre las que se fundamenta la investigación biográfica. El trabajo muestra, de un modo práctico o didáctico, cómo orientarse en este proceso.

  2. Quem tem documentos sobre a ditadura? Uma análise da legislação e das iniciativas governamentais.

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    Vitor Amorim de Angelo

    2012-08-01

    Full Text Available http://dx.doi.org/10.5007/2175-7984.2012v11n21p199   Partindo da campanha publicitária do Centro de Referência das Lutas Políticas no Brasil (1964-1985, nosso objetivo neste trabalho é discutir o posicionamento do governo federal em relação aos arquivos da ditadura militar. Para tanto, recuperamos o longo debate iniciado no mandato de FHC em torno da divulgação dos documentos sigilosos produzidos pela ditadura. A reconstrução desse debate e a análise crítica da campanha publicitária nos permitiu apontar os limites e as contradições da atuação do governo brasileiro nessa questão.

  3. La Declaración Conjunta de la Cumbre de París para el Mediterráneo. Un Documento Claramente Mejorable en Asuntos de Seguridad

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    Antonio Marquina Barrio

    2009-01-01

    Full Text Available La iniciativa Unión para el Mediterráneo adoptada en julio de 2008 en Paris y que fue acogida de una forma bastante favorable, supone un cambio significativo en aspectos fundamentales con respecto al proceso de Barcelona. El capítulo de aspectos políticos y de seguridad ha quedado profundamente devaluado. Esto podría tener sentido dentro de un contexto teórico bien articulado en fases y reaseguros que dimanara del documento. Este no es el caso. Las importantes innovaciones introducidas, con la inclusión de proyectos comunes como línea vertebral y la densa institucionalización del proceso no quedan bien articuladas en un conjunto armónico y teóricamente consistente en los tres tradicionales cestos o capítulos que se mantienen en la Unión para el Mediterráneo.

  4. Exención fiscal nobiliaria en el ámbito local bajomedieval : en torno a tres documentos de la villa de Belmonte

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    Luis Díaz de la Guardia y López

    2006-01-01

    Full Text Available Fundamentado en tres documentos inéditos de la villa de Belmonte (siglos XIV, XV y XVI y en documentación del Archivo Histórico Nacional (AHN, del Archivo General de Simancas (AGS y de la Real Chancillería de Granada (ARChG, el autor reflexiona sobre las exenciones nobiliarias en al ámbito local en relación con la problemática de las tierras pecheras en la Corona de Castilla.Basing on three unpublished documents of the town of Belmonte (XIV-XVI c. and the documentation of AHN (The National Historical Archive, AGS (The General Archive of Simancas and ARChG (The Royal Chancellery Archive of Granada, the author reflects on the fiscal immunities of the nobility in the local area related to the problem of the taxable lands in the Reign of Castile.

  5. La elaboración de los documentos de planificación: una actividad cuestionada en la formación de maestros

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    Antonia LÓPEZ MARTÍNEZ

    2009-01-01

    Full Text Available El trabajo que presentamos tiene por finalidad conseguir una mejor formación didáctica y organizativa de los futuros maestros de Educación Infantil y Primaria, durante su periodo de prácticas de enseñanza. El objetivo se centra en conocer, por parte de los estudiantes, el proceso llevado a cabo en los centros educativos para la elaboración de los documentos de planificación, con la finalidad de que conecten los conocimientos teóricos que reciben sobre la planificación de los centros educativos en la asignatura Organización del centro escolar, con situaciones reales en la práctica.

  6. Implementación de un sistema de indexación distribuida de documentos para la contratación de productos de crédito en una entidad financiera

    OpenAIRE

    Espol; Almeida Campos, Fausto Stanley

    2017-01-01

    El trabajo de titulación presentado a continuación abordará un caso de estudio de una entidad financiera ecuatoriana cuyo proceso de contratación de productos de crédito fue rediseñado con la finalidad de agilizar los tiempos de respuesta al cliente y asegurar una correcta administración de los respaldos digitales de los documentos obtenidos o generados a través de dicho proceso de contratación. Este documento presenta de forma detallada la situación de la empresa en cuanto al proceso de n...

  7. Documentos relacionados con el Visir Amen-Hotep, Huy, dueño de la tumba nº -28- en Asasif : (Luxor Occidental

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    Francisco J. Martín Valentín

    2011-01-01

    Full Text Available Los documentos y monumentos relacionados con el Visir Amen-Hotep, Huy, que desempeñó su función como Visir del Sur en los años finales del reinado de Amen-Hotep III (dinastía XVIII, hacia 1358-1353 a. C. son muy escasos, en comparación con los referidos a otros personajes del mismo periodo. El motivo principal de esta oscuridad es, sin duda, el hecho de haber sido perseguida su memoria, y destruidos sus monumentos. Este artículo tiene por objeto publicar la compilación de los documentos arqueológicos y textuales conocidos, relacionados con el Visir Amen-Hotep, Huy, hasta el momento en que, en el año 2009, se inició por el Instituto de Estudios del Antiguo Egipto de Madrid la exploración y excavación sistemática de la tumba nº -28- , construida por orden del Visir Amen-Hotep, Huy, en la necrópolis de Asasif (Luxor Occidental.The documents and monuments connected with the vizier Amen-Hotep, Huy, who was Vizier of the South, at the end of the reign of Amen-Hotep III (XVIIIth. dynasty c.1358 - 1353 BC, are very scarce, compared with referrals to other courtiers in the same period. The main reason for this darkness is, without doubt, the fact of having been persecuted his memory, and his monuments, destroyed . This article aims to publish the compilation of known archaeolgical and textual documents, in relation with the Vizier Amen-Hotep, Huy, before 2009, when the Instituto de Estudios del Antiguo Egipto of Madrid started the systematic exploration and excavation in the tomb No. 28-, built by order of this high royal functionary, in the necropolis of Asasif (Luxor West Bank.

  8. Ontologia de dependência tecnológica de documentos digitais: instrumento de apoio à preservação digital

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    Eloi Juniti Yamaoka

    2012-12-01

    Full Text Available http://dx.doi.org/10.5007/1518-2924.2012v17nesp2p211   Este artigo apresenta o uso da ontologia para modelar a dependência tecnológica de objetos digitais. Na computação e na ciência da informação, ontologia é um artefato que permite a modelagem de conhecimento em algum domínio e possibilitaespecificar um vocabulário para fazer asserções que podem ser utilizadas por software. Para a que possa ser compreensível por humanos, o documento digital exige o uso detecnologia. Essa dependência tecnológica requer um cuidadosoacompanhamentoda obsolescência dessas tecnologias utilizadas para a criação e visualização do documento digital. O ambiente tecnológico de uma organização que faz uso intensivo da tecnologia da informação e comunicação pode ser constituído de milhares de componentes inter-relacionados e a tarefa de verificar o impacto da desativação de determinada tecnologia é muito trabalhosa. Visando reduzir os efeitos desse problema, foi desenvolvida a ontologia DeTec, com o uso da Web OntologyLanguage (OWL. Para a modelagem foi utilizada a plataforma Protégé da Stanford University. A ontologia DeTecé constituída de oito classes principais que permite a identificação de quais tecnologias um objeto digital tem dependência. Essa funcionalidade possibilita evitar a desativação equivocada de uma tecnologia e a consequente perda dos objetos dela dependente.

  9. Ontologia de dependência tecnológica de documentos digitais: instrumento de apoio à preservação digital

    Directory of Open Access Journals (Sweden)

    Fernando Ostuni Gauthier

    2012-01-01

    Full Text Available Este artigo apresenta o uso da ontologia para modelar a dependência tecnológica de objetos digitais. Na computação e na ciência da informação, ontologia é um artefato que permite a modelagem de conhecimento em algum domínio e possibilita especificar um vocabulário para fazer asserções que podem ser utilizadas por software. Para a que possa ser compreensível por humanos, o documento digital exige o uso detecnologia. Essa dependência tecnológica requer um cuidados o acompanhamento da obsolescência dessas tecnologias utilizadas para a criação e visualização do documento digital. O ambiente tecnológico de uma organização que faz uso intensivo da tecnologia da informação e comunicação pode ser constituído de milhares de componentes inter-relacionados e a tarefa de verificar o impacto da desativação de determinada tecnologia é muito trabalhosa. Visando reduzir os efeitos desse problema, foi desenvolvida a ontologia DeTec, com o uso da Web Ontology Language (OWL. Para a modelagem foi utilizada a plataforma Protégé da Stanford University. A ontologia De Tecé constituída de oito classes principais que permite a identificação de quais tecnologias um objeto digital tem dependência. Essa funcionalidade possibilita evitar a desativação equivocada de uma tecnologia e a consequente perda dos objetos dela dependente.

  10. Estudio sobre los servicios de traducción de documentos a lenguas distintas al inglés, requeridos en algunas empresas colombianas, con el fin de optimizar el perfil del traductor

    OpenAIRE

    2013-01-01

    Este estudio está enfocado en describir el crecimiento de relaciones comerciales (servicios de traducción) en idiomas distintos al inglés, y en consecuencia la necesidad de formar y posicionar traductores de documentos comerciales y legales en estas nuevas lenguas dentro de las compañías

  11. Uma Odisséia pelos documentos: leituras do livro “Antigüidade Clássica: a história e a cultura a partir dos documentos”/An Odyssey by the documents: readings of the book Antigüidade Clássica: a história e a cultura a partir dos documentos

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    Renilson Rosa Ribeiro

    2004-01-01

    Full Text Available O presente artigo pretende realizar uma reflexão sobre o livro Antigüidade Clássica: A histó-ria e a cultura a partir dos documentos, de Pedro Paulo Abreu Funari, professor de História Antiga e Arqueologia Histórica (Universidade Estadual de Campinas a luz de suas proposições metodológicas e temáticas para o ensino de História Antiga nas universidades e escolas de edu-cação básica no Brasil. This article intends to realize an analyze about Antigüidade Clássica: A história e a cultura a partir dos documentos, published by Pedro Paulo Abreu Funari, professor of Antique History and Historical Archaeology (Campinas State University, giving special attention to his meth-odological and theoretical proposals for the studying and teaching of Antique History in Brazil-ian universities and secondary schools.

  12. Documento de trabajo sobre la doctrina de las carreras comprendidas en el art 43 y el carácter de las actividades reservadas

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    Comisión de Asuntos Académicos Subcomisión Art. 43° CIN

    2013-05-01

    Full Text Available La subcomisión para el Art. 43° de la Ley de Educación Superior de la Comisión de Asuntos Académicos del Consejo Interuniversitario Nacional (CIN entiende sobre la imperiosa necesidad de discutir y aportar nuevas configuraciones que colaboren con la definición de la doctrina de uso establecida sobre del carácter dado a las actividades reservadas de los títulos comprendidos en el Artículo 43º de la LES. De acuerdo a la definición de la misma, es el Ministerio de Educación, en acuerdo con el Consejo de Universidades quienes determinan las actividades reservadas de los poseedores de los títulos incluidos en su régimen, a diferencia de lo que ocurre en la regla general (art. 42, en el cual son las universidades las que determinan el alcance o  la competencia de los profesionales para el ejercicio de la profesión. La acreditación por otra parte certifica que se han alcanzado los estándares mínimos en términos de contenidos, carga horaria e intensidad de la formación práctica atento las actividades previstas que se espera realice ese profesional cuando se gradúe. Por ello se plantea la elaboración de un documento básico de interpretación del Artículo 43º de la LES, para ser sometido a consideración en la Comisión de Asuntos Académicos. Este documento tiene por objeto diferenciar claramente Actividades Reservadas y Alcances del título y permitir que carreras no incluidas en el Artículo 43º puedan compartir alcances con aquellas que si lo están de una manera más flexible.

  13. La fotografía como documento informativo en las webs de los ministerios españoles. Acceso, visibilidad, funcionalidad y políticas de uso

    Directory of Open Access Journals (Sweden)

    Salvador-Benítez, Antonia

    2016-06-01

    Full Text Available Public information constitutes a documentary corpus of exceptional interest. Its value has made it necessary to regulate both its use as well as its reutilization by means of specific laws, with the purpose of placing this information at the disposal of companies, institutions, researchers and citizens in general. An important part of this information consists of the photographic documents produced and distributed by public bodies, about which very few studies have been carried out. The purpose of this investigation is to learn more about the use of photographs as documents that are found on the websites of Spanish Ministries, by analyzing specific aspects such as the access to them, their visibility, functionality, documentation and rights. This investigation finds that users have at their disposal close to 30,000 photographs available on the web and concludes by recommending the creation of a common image bank to gather the dispersed photographs and normalize both functionality and terminology, as well as establishing common criteria for documenting the originals.La información pública constituye un corpus documental de excepcional interés. Sus valores han obligado a regular tanto el uso como la reutilización mediante leyes específicas, con el fin de ponerla a disposición de empresas, instituciones, investigadores y ciudadanos en general. Una parte de dicha información la constituyen los documentos fotográficos generados y difundidos a través de organismos públicos, sobre los que apenas se han realizado estudios. Se pretende con esta investigación conocer el uso de la fotografía como documento en las páginas webs de los ministerios españoles, analizando aspectos concretos como el acceso, la visibilidad, la funcionalidad, la documentación y los derechos. De la investigación resulta que los usuarios tienen a su disposición cerca de 30.000 fotografías en la web, y se concluye la necesidad de crear un banco de imágenes com

  14. APLICACIÓN DE UNA PROPUESTA TEÓRICA Y METODOLÓGICA PARA LA PRODUCCIÓN DE DOCUMENTOS EN EL MODELO POR COMPETENCIAS: UN ESTUDIO CUASIEXPERIMENTAL

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    Ma. Isabel Araya Muñoz

    2011-01-01

    Full Text Available Este artículo muestra los resultados de un estudio cuasiexperimental, definido como Diseño de Grupo Control sin Tratamiento. Se elaboró y se implementó una propuesta teórica y metodológica para el proceso de enseñanza y aprendizaje para la producción de documentos en las oficinas, en el enfoque por competencias, en un curso de las carreras Administración de Oficinas y Educación Comercial de la Escuela de Secretariado Profesional de la Universidad Nacional de Costa Rica, primer ciclo 2009. Tres grupos participaron: uno experimental con tratamiento y dos grupos control con la metodología tradicional. Los resultados del postest mostraron que el experimental superó el promedio de rendimiento en 6,5 puntos al grupo control 2 y en 1,13 puntos al grupo control 1, línea que se marca en la comparación del rendimiento por áreas cognoscitivas. Para complementar los resultados de los tests se exploraron también factores del proceso de enseñanza y de aprendizaje aplicado en cada grupo. Además, mediante técnicas cualitativas se identificó la incidencia en el rendimiento de las estrategias de aprendizaje, el interés de los estudiantes y las estudiantes, su experiencia laboral, la formación dual y la carrera así como el papel de la persona docente. Se concluye que el modelo de formación por competencias podría mejorar el rendimiento académico en la producción de documentos cuando un espacio pedagógico es abordado desde la integración de saberes a partir de actividades didácticas que fomenten el diálogo, la indagación, la aplicación teórica a la resolución de problemas, el aprendizaje experiencial en el aula y en entornos lo más relacionados con la futura práctica profesional.

  15. Os azulejos da Misericórdia: a imagem documento na história da cultura religiosa luso-brasileira

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    Maria Eurydice de Barros Ribeiro

    2015-06-01

    Full Text Available Os azulejos portugueses em Portugal e no Brasil são considerados quase sempre como objetos da História da Arte. A proposta deste estudo consiste em abordar os azulejos não como objetos de arte, mas como documentos da história da cultura luso-brasileira. O conceito de imagem documento será desenvolvido por meio da análise de um dos ritos mais importantes da história da cultura religiosa ocidental: a procissão. A atenção do estudo recairá, em especial, sobre a Procissão dos Ossos, que se encontra representada nos painéis de azulejos (séc. XVIII da Igreja da Misericórdia em Salvador. A Procissão dos Ossos, instituída por D. Manoel em 1498, tinha como objetivo a retirada dos ossos dos justiçados, dando-lhes sepultura. Para a missão, o rei designou a Ordem da Misericórdia. O ato régio se estendeu ao Brasil, quando a primeira Casa da Misericórdia foi fundada na cidade do Salvador, em 1549. O painel, datado do século XVIII, representando a cerimônia, divide o espaço da igreja da Misericórdia com outras duas representações: a procissão do Senhor Morto, introduzida no Brasil (também pelos portugueses, e a Procissão do Fogaréu, introduzida pelos espanhóis. Entre a data da realização da primeira Procissão dos Ossos e o assentamento do painel de azulejos existe um espaço de tempo que permite avaliar a heterogeneidade dos tempos da arte, onde os ritmos diferenciados não coincidem, necessariamente, com os tempos da história.

  16. Neutron dosimetry; Dosimetria de neutrons

    Energy Technology Data Exchange (ETDEWEB)

    Fratin, Luciano

    1993-12-31

    A neutron irradiation facility was designed and built in order to establish a procedure for calibrating neutron monitors and dosemeters. A 185 GBq {sup 241} Am Be source of known is used as a reference source. The irradiation facility using this source in the air provides neutron dose rates between 9 nSv s{sup -1} and 0,5 {sup {mu}}Sv s{sup -1}. A calibrated 50 nSv s{sup -1} thermal neutron field is obtained by using a specially designed paraffin block in conjunction with the {sup 241} Am Be source. A Bonner multisphere spectrometer was calibrated, using a procedure based on three methods proposed by international standards. The unfold {sup 241} Am Be neutron spectrum was determined from the Bonner spheres data and resulted in a good agreement with expected values for fluence rate, dose rate and mean energy. A dosimetric system based on the electrochemical etching of CR-39 was developed for personal dosimetry. The dosemeter badge using a (n,{alpha}) converter, the etching chamber and high frequency power supply were designed and built specially for this project. The electrochemical etching (ECE) parameters used were: a 6N KOH solution, 59 deg C, 20 kV{sub pp} cm{sup -1}, 2,0 kHz, 3 hours of ECE for thermal and intermediate neutrons and 6 hours for fast neutrons. The calibration factors for thermal, intermediate and fast neutrons were determined for this personal dosemeter. The sensitivities determined for the developed dosimetric system were (1,46{+-} 0,09) 10{sup 4} tracks cm{sup -2} mSv{sup -1} for thermal neutrons, (9{+-}3) 10{sup 2} tracks cm{sup -2} mSV{sup -1} for intermediate neutrons and (26{+-}4) tracks cm{sup -2} mSv{sup -1} for fast neutrons. The lower and upper limits of detection were respectively 0,002 mSv and 0,6 mSv for thermal neutrons, 0,04 mSv and 8 mSv for intermediate neutrons and 1 mSv and 12 mSv for fast neutrons. In view of the 1990`s ICRP recommendations, it is possible to conclude that the personal dosemeter described in this work is sufficiently sensitive to thermal and intermediate neutrons but fast neutron monitoring ar radiological protection level would require an integration period of over a month. The proposed dosimetric procedure is based on the conjugated use of the developed personal dosemeter and the Bonner multisphere spectrometer. (author) 58 refs., 31 figs., 12 tabs.

  17. Neutron dosimetry; Dosimetria de neutrons

    Energy Technology Data Exchange (ETDEWEB)

    Fratin, Luciano

    1994-12-31

    A neutron irradiation facility was designed and built in order to establish a procedure for calibrating neutron monitors and dosemeters. A 185 GBq {sup 241} Am Be source of known is used as a reference source. The irradiation facility using this source in the air provides neutron dose rates between 9 nSv s{sup -1} and 0,5 {sup {mu}}Sv s{sup -1}. A calibrated 50 nSv s{sup -1} thermal neutron field is obtained by using a specially designed paraffin block in conjunction with the {sup 241} Am Be source. A Bonner multisphere spectrometer was calibrated, using a procedure based on three methods proposed by international standards. The unfold {sup 241} Am Be neutron spectrum was determined from the Bonner spheres data and resulted in a good agreement with expected values for fluence rate, dose rate and mean energy. A dosimetric system based on the electrochemical etching of CR-39 was developed for personal dosimetry. The dosemeter badge using a (n,{alpha}) converter, the etching chamber and high frequency power supply were designed and built specially for this project. The electrochemical etching (ECE) parameters used were: a 6N KOH solution, 59 deg C, 20 kV{sub pp} cm{sup -1}, 2,0 kHz, 3 hours of ECE for thermal and intermediate neutrons and 6 hours for fast neutrons. The calibration factors for thermal, intermediate and fast neutrons were determined for this personal dosemeter. The sensitivities determined for the developed dosimetric system were (1,46{+-} 0,09) 10{sup 4} tracks cm{sup -2} mSv{sup -1} for thermal neutrons, (9{+-}3) 10{sup 2} tracks cm{sup -2} mSV{sup -1} for intermediate neutrons and (26{+-}4) tracks cm{sup -2} mSv{sup -1} for fast neutrons. The lower and upper limits of detection were respectively 0,002 mSv and 0,6 mSv for thermal neutrons, 0,04 mSv and 8 mSv for intermediate neutrons and 1 mSv and 12 mSv for fast neutrons. In view of the 1990`s ICRP recommendations, it is possible to conclude that the personal dosemeter described in this work is sufficiently sensitive to thermal and intermediate neutrons but fast neutron monitoring ar radiological protection level would require an integration period of over a month. The proposed dosimetric procedure is based on the conjugated use of the developed personal dosemeter and the Bonner multisphere spectrometer. (author) 58 refs., 31 figs., 12 tabs.

  18. GERENCIAMENTO DE DOCUMENTOS ELETRÔNICOS: ESTUDO DE CASO COM O SISTEMA DE GESTÃO DE CONTEÚDO PLONE

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    Marcello Peixoto Bax

    2011-10-01

    Full Text Available A gestão de arquivos eletrônicos ou documentos arquivísticos eletrônicos demanda novas formas de gerenciamento para garantir agilidade e atender as especificidades tecnológicas, jurídicas e arquivísticas. O artigo desenvolve estudo de caso em uma empresa de jornalismo, que apresenta necessidade de automatização do contínuo fluxo de interação autor-editor. Os resultados revelam as necessidades informacionais para a gestão de arquivos eletrônicos no ambiente de análise, em relação à teoria de arquivos, e apresentam uma solução para a adoção de ferramenta web colaborativa que atenda às necessidades de operação e gerência. A ferramenta solução identificada foi o Plone , um portal corporativo que utiliza software livre de forma integrada com o ambiente Windows proprietário, e atende aos requisitos teóricos e empresariais. Desta forma, para a empresa torna-se possível o controle de edição compartilhada (com check-in e check-out, o acesso universal ao acervo pela internet, o uso de metadados, e a automação de processos via workflow.

  19. Masculino inclusivo, masculino no inclusivo y femenino en la denominación del sujeto de derecho en fueros y documentos

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    Belén Almeida

    2012-06-01

    Full Text Available En este trabajo se examinan las fórmulas de masculino más femenino que aparecen en textos legales medievales, especialmente fueros y documentos notariales, y su relación con los contextos en que aparecen masculinos inclusivos para denominar la totalidad de seres humanos de determinado grupo. Se analizan los factores a los que obedece el empleo de la doble forma y las diferencias en el uso de esta construcción entre unos pares de términos y otros.Ce travail examine les formules associant terme masculin et terme féminin qui apparaissent dans les textes légaux médiévaux, surtout dans les documents des fueros et documents notariaux, et leur rapport avec les contextes où ce sont des masculins inclusifs qui nomment la totalité des personnes d’un certain groupe. Les facteurs auxquels obéit l’emploi de la double forme ainsi que les différences d’usage de cette construction sont analysés.

  20. CUENTAS NACIONALES Y SU NÚCLEO CONCEPTUAL. ELEMENTOS PARA UNA CRÍTICA AL DOCUMENTO SNA- 1993 DE LA ONU

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    Emilio José Chaves Márquez

    2003-01-01

    Full Text Available La metodología que procesa los datos primarios usados para elaborar las Cuentas Nacionales se aborda desde tres lados: 1 La fórmula del PIB de Kuznets y las Tablas Insumo-Producto de Leontief; 2 El documento SNA- 93 de las Naciones Unidas (System of National Accounts, versión 1993 y 3 Una propuesta alterna de manejo. El análisis es proyectado a las cifras empíricas oficiales de Colombia en 1990. Se cuestionan los conceptos que subyacen el modelo implícito en el SNA-93. La propuesta alternativa de Cuentas Nacionales de Insumo-Producto incluye entre otros elementos: 1 el retorno al concepto de Valor-Agregado clásico, 2 la eliminación del PIB y el Output en el análisis, 3 disminución del número de precios, variables, ajustes y cuadros empleados, 4 manejo homogéneo contable para todos los sectores, basado en flujos de ingresos y pagos a precios reales de mercado.

  1. ANÁLISIS CRÍTICO DEL DISCURSO DE DOCUMENTOS DE POLÍTICA PÚBLICA EN EDUCACIÓN

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    Sandra Soler Castillo

    2011-06-01

    Full Text Available En las últimas décadas, la educación se ha convertido en centro de atención y preocupación de los gobiernos, que cada vez se esfuerzan más por acatar las "recomendaciones" de los organismos internacionales interesados en establecer prácticas socializadoras acordes a sus intereses, fundamentalmente de corte económico. En este marco, la educación es vista como un fin per se, un ideal incuestionable que deben perseguir todos los estados interesados en el progreso. Sin embargo, resulta pertinente analizar qué hay detrás de todas estas políticas de educación, qué intereses se persiguen, para así, indagar las ideologías subyacentes en las pronunciaciones y discursos oficiales del gobierno. Para esto se plantea el análisis crítico de documentos de política pública, de orden internacional, regional y nacional, con el fin de determinar de qué tipo de estrategias y estructuras discursivas se valen estos organismos generadores de política para naturalizar ciertas acciones y fijar idearios comunes, universales, de tal manera que se dificulte su rechazo o crítica.

  2. De los registros a los objetos: Semántica y comportamiento de los documentos: el desafío de la Web 3.0

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    Mela Bosch

    2012-10-01

    Full Text Available Se presenta un panorama y los interrogantes fundamentales de la etapa de la Web 3.0. Se analizan las características actuales de los sistemas bibliográficos estructurados con el modelo entidad-relación. Se definen los niveles conceptual, lógico y físico en los sistemas informáticos; consecuentemente se presentan las características de los FRBR y se obervan las relaciones entre obra y documento en el modelo conceptual FRBR. Se describen los FRBRoo como una interpretación con una lógica de objetos de los mismos requerimientos funcionales. Finalmente se plantean las tendencias a futuro, tales como pasar de las modelizaciones de entidad-relación a la de objetos, la explicitación con anotación semántica consistente, el mapeo de bases bibliográficas existentes y el desarrollo de ontologías para que los sistemas documentales se integren en la Web Semática

  3. O Plano de Classificação de Documentos do Conselho Nacional de Arquivos: uma análise crítica El Plan de Clasificación de los Documentos del Consejo Nacional de Archivos: un análisis crítico.

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    Eliezer Monteiro Pinho

    2011-06-01

    Full Text Available Tendo por base o plano de classificação de documentos proposto pelo Conarq, e tomando como corte de análise a subclasse 080 – Pessoal Militar, o presente estudo traça um panorama das imprecisões e limitações do instrumento, ao mesmo tempo em que sugere novas perspectivas na aplicação da classificação enquanto função arquivística. O texto também propicia um vislumbre dos desafios de raciocínio envolvidos na prática da temática abordada, bem como sugere outra metodologia de classificação, diferente da que ora é utilizada pelo Conarq.

  4. La huaca Narihualá: un documento para la etnohistoria de la Costa Norte del Perú (1000 - 1200 D.-C.

    Directory of Open Access Journals (Sweden)

    1990-01-01

    Full Text Available LA HUACA NARIHUALA: UN DOCUMENT POUR L’ETHNOHISTOIRE DE LA REGION COTIERE DU PEROU (1000 - 1200 AP. J. C.. Le site archéologique de Narihualá, situé sur la côte de l’extrème nord du Pérou, fut un centre politique et administratif important de l’ethnie Tallán qui occupait la basse vallée de Piura pendant la période Intermédiaire Tardive (1000-1200 ap. J.C.. Dans cet article, l’auteur procède à l’analyse de façon exhaustive un document ethnohistorique daté de l656, décrivant les fouilles effectueés localement par des indigènes ainsi que celles réalisées officiellement par la Couronne d’Espagne au moyen de contrats. Le document est ensuite confronté avec les résultats des recherches archéologiques du mois de mai l988 qui avaient permis d’identifier des fragments de céramique de style Tallán, Chimú Tardif et Inca Local, et de localiser des chemins pré-hispaniques. El sitio arqueológico Narihualá, localizado en la costa del extremo norte del Perú, fue un importante centro políticoadministrativo del área étnica de los Tallán del Bajo Piura y corresponde al Período Intermedio Tardío (1000-1200 d. C.. En este artículo, el autor analiza exhaustivamente un documento etnohistórico que data de l656, describiendo las excavaciones de indígenas y las oficializadas por la Corona española mediante contratos aprobados. Se confronta tal documento con los reconocimientos arqueológicos realizados en el mes de mayo de l988, que permitieron identificar fragmentos de cerámica del estilo Tallán, Chimú Tardío e Inca Local y ubicar antiguos caminos prehispánicos. THE HUACA NARIHUALA: A DOCUMENT FOR THE ETHNOHISTORY OF THE NORTH COAST OF PERU (1000-1200 A.D.. Narihuala, is an arqueological site located on the Northern coast of Peru. During the Late Intermediate period (1000-1200 A.D. it was an important political and administrative center of the Tallán ethnic group, of the Lower Piura valley. In this paper, the author

  5. Tendências tecnológicas do uso do sisal em compósitos a partir da prospecção em documentos de patentes

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    Felipe Scopel

    2013-01-01

    Full Text Available As fibras naturais têm sido pesquisadas e empregadas de maneira crescente no desenvolvimento de produtos com sustentabilidade econômica, social e ambiental, sendo o sisal uma das mais importantes para o Brasil, pela sua posição de liderança na produção mundial. O presente artigo analisa a evolução temporal e o interesse das empresas e instituições em tecnologias associadas ao sisal, a partir de informações e indicadores extraídos de documentos de patentes no período de 1960 a 2009. Foi verificado o crescente patenteamento associado ao sisal em áreas de química, ciência dos materiais e dos polímeros, com destaque para o reforço do de compósitos plásticos. Além do crescente número de patentes, houve também um expressivo aumento do número de empresas e instituições titulares das patentes, o que reflete a possível desconcentração do mercado nesse crescimento do interesse pelas tecnologias associadas ao sisal. O Brasil, apesar da sua proeminência na produção do sisal, possui pequena presença no patenteamento mundial. Também foi verificada a importância da análise de patentes para o acompanhamento da evolução das tecnologias e interesses, pela disponibilidade de informações públicas que podem ser transformadas em indicadores úteis para análise de tecnologia e mercado associados ao sisal ou a outras áreas tecnológicas.

  6. Un documento inédito del siglo XVIII. El padre jesuita Pedro Lozano y su primera carta anua, 1720-1730

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    Svriz Wucherer, Pedro Miguel Omar

    2013-06-01

    Full Text Available Letters Anuas of the Jesuit Province of Paraguay are very important and historical sources necessary for the reconstruction of the cultural and evangelizing by the Company of Jesus in the territories of the River Plate. For this reason, the editing and analysis of such sources are fundamental tasks in this case we refer to the first letter Anua made by father Lozano and reporting to the father General, resident in Rome, about the context in which they developed their evangelizing work parents of the order. Besides highlighting the image of the author, father Pedro Lozano, the context in which he wrote, the role of these documents, and some of the particularities and topics that exposes the source of the first half of the eighteenth century.Las Cartas Anuas de la Provincia Jesuítica del Paraguay son fuentes históricas muy importantes e indispensables para la reconstrucción de la labor cultural y evangelizadora realizada por la Compañía de Jesús en los territorios del Río de la Plata. Por esta razón, la edición y análisis de este tipo de fuentes son tareas fundamentales, en este caso nos referiremos a la primera Carta Anua que realizó el padre Lozano y que informan al padre General, residente en Roma, acerca del contexto en los cuales desarrollaron su labor evangelizadora los padres de la orden. Además resaltaremos la figura de su autor el padre Pedro Lozano, el contexto en el cual escribió, la función que cumplieron estos documentos, y algunas de las particularidades y tópicos que expone esta fuente de la primera mitad del siglo XVIII.

  7. First document of the eoloelectric project of the wind corridor of the Tehuantepec Isthmus; Primer documento del proyecto eoloelectrico del corredor eolico del Istmo de Tehuantepec

    Energy Technology Data Exchange (ETDEWEB)

    Borja Diaz, Marco A.; Jaramillo Salgado, Oscar A.; Mimiaga Sosa, Fernando [Instituto de Investigaciones Electricas, Cuernavaca, Mor. (Mexico)

    2005-07-01

    This document makes evident that now the political will exists to inspire the eoloelectric development in Mexico, and that a wide range of actors of the public and private sector, both national and international. These sectors are willing to support all the actions that lead to achieve that the eoloelectric generation will be one of the most productive industries of the country in the context of the power diversification for the sustainable development. Therefore, the main challenge is to formulate and to carry out a plan of actions to achieve strategic goals in the short, medium and long term, so that, gradually is possible to take advantage of all the benefits that the eoloelectric generation in its diverse niches of opportunity offers. In this book, the strategies of the main eoloelectric markets, the power policy, and the eoloelectric development in the Isthmus of Tehuantepec in the last 10 years are described. [Spanish] Este documento hace evidente que ahora existe la voluntad politica para impulsar el desarrollo eoloelectrico en Mexico y que una amplia gama de actores del sector publico y privado tanto nacional como internacional, estan dispuestos a apoyar todas las acciones que conduzcan a lograr que la generacion eoloelectrica sea una de las industrias mas productivas del pais en el contexto de la diversificacion energetica para el desarrollo sustentable. Por consiguiente, el reto principal es formular y llevar a cabo un plan de acciones para lograr metas estrategicas en el corto, mediano y largo plazo, de tal forma que, de manera gradual sea posible aprovechar todos los beneficios que ofrece la generacion eoloelectrica en sus diversos nichos de oportunidad. En este libro se describen las estrategias de los principales mercados eoloelectricos, la politica energetica, y el desarrollo eoloelectrico en el Istmo de Tehuantepec en los ultimos 10 anos.

  8. La fotografía como documento sociocultural a finales del siglo XIX: Nadar y el retrato post mórtem

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    Vázquez Casillas, José Fernando

    2014-12-01

    Full Text Available There is no doubt that photography was a transcendental element in nineteenth-century that definitely democratized portraiture. Citizenship found in this procedure the most effective way for their social representation. In this sense, this article deals with the important role photography played as as sociocultural document in late nineteenth-century through post mortem portrait studio. To understand this iconography we take as reference to Gaspard-Félix Tournachon «Nadar» testimony. The reflections of this photographer and theorist will help to clarify the social role of post mortem portrait at that time.No cabe duda de que la fotografía se posicionó en el siglo XIX como el elemento trascendental que democratizó definitivamente el retrato. La ciudadanía halló en este procedimiento el medio más eficaz para su representación social. En este sentido, planteamos en este artículo el importante papel que va a desempeñar la fotografía como documento sociocultural a finales del siglo XIX a través del estudio ideológico del retrato post mórtem como una modalidad usual en el ámbito familiar de aquel tiempo. Para la comprensión de esta iconografía tomamos como referente las reflexiones del fotógrafo y teórico Gaspard-Félix Tournachon «Nadar», con el fin de profundizar tanto en la función social del retrato de difuntos como en su posicionamiento dentro de la práctica fotográfica.

  9. Los servicios electrónicos de información puntual y suministro de documentos: revistas frente a artículos

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    de la Peña Sánchez, C.

    1995-06-01

    Full Text Available The electronic information services CAS-IAS, acronym of current awareness service-individual article supply, arise in the last eighties. Many companies and institutions, related to the international serials industry, meeting the increasing demand of current information and individual articles of scientific, technical and academic journals, have decided to diversify their offer of information products and services. This kind of electronic information services have been input in the international communication networks. This paper analyzes the reasons which have given rise to the growth of this new industry, establishes the characteristics of these services and gives a non-exhaustive list of the different current awareness and individual article supply services emerged in the last years.

    A finales de los años ochenta tienen sus primeras manifestaciones los servicios electrónicos de información puntual o alerta bibliográfica y suministro de documentos, en inglés denominados CAS-IAS, acrónimo de current awareness service individual article supply. Numerosas empresas e instituciones, dedicadas de una u otra forma a la industria de las publicaciones periódicas, respondiendo a la creciente demanda de información puntual y de artículos sueltos de revistas, diversifican su oferta de productos y servicios de información y los introducen en las redes de comunicación de datos internacionales. El presente trabajo analiza las causas que han dado origen al nacimiento de esta nueva industria, define las características de estos servicios y proporciona una lista no exhaustiva de los aparecidos en los últimos años.

  10. Documento, história e memória: a importância da preservação do patrimônio documental para o acesso à informação

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    Franciele Merlo

    2015-03-01

    Full Text Available Introdução: A História é registrada em documentos que formam um conjunto: o patrimônio documental.Objetivo: Este estudo tem por finalidade identificar a importância da preservação do patrimônio documental em meio à relação documento, história e memória, com vistas ao acesso à informação.Metodologia: Do ponto de vista dos procedimentos metodológicos utilizados, trata-se de uma pesquisa bibliográfica. Assim, delimitou-se o uso de materiais publicados em livros, periódicos ou internet. Resultados: No Brasil, a Constituição Federal de 1988 definiu os documentos públicos como patrimônio cultural do país. Esse patrimônio constitui a memória da sociedade; portanto é preciso preservá-lo para que os cidadãos brasileiros possam acessá-lo quando necessário. O direito de acesso, previsto constitucionalmente, foi regulamentado pela Lei de Acesso à Informação.Conclusões: a lei de acesso é considerada um marco para a sociedade brasileira exercer seus direitos. O intuito da preservação do patrimônio documental é possibilitar aos cidadãos o acesso à memória para construir sua identidade. A relação documento, história e memória é pouco abordada por pesquisadores brasileiros, sob o ponto de vista da necessidade de preservação do patrimônio documental visando ao direito da sociedade de acesso à informação. Desta maneira, instiga-se um maior desdobramento acerca do tema apresentado.

  11. Aplicación de la Lógica de Predicados para la Realización de Inferencias en Documentos de Pasantía Descritos a Nivel Ontológico

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    Germán Alejandro Pinilla García

    2016-07-01

    Full Text Available El número de usuarios que en la actualidad se apropia de prácticas de consulta mediante sistemas documentales cada vez es mayor, en este documento se hizo una representación a través de la lógica de predicados, aplicada a una ontología que describe trabajos de grado en modalidad pasantía, con el fin de realizar inferencias que permitan obtener información implícita a partir de las descripciones semánticas de los documentos. Se presentaron algunos componentes de la ontología, su representación en OWL (Ontology Web Language, la notación algebraica de las reglas obtenidas para representar la información mostrada en la ontología y finalmente las inferencias obtenidas. Lo anterior permite que los repositorios puedan ser utilizados por herramientas de software en diferentes instituciones, complementando la información explícita que proporcionan con información implícita pertinente a dirección, evaluación y temáticas de consulta en documentos de pasantía.

  12. Comparação do processo de categorização de documentos utilizando palavras-chave e citações em um domínio de conhecimento restrito

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    Magali Rezende Gouvêa MEIRELES

    Full Text Available Resumo O processo de categorização requer a extração de elementos representativos de um documento de modo que sua essência possa ser utilizada na identificação de similaridades e na geração de categorias. O objetivo deste trabalho é analisar as dificuldades e os resultados encontrados em dois processos diferentes de categorização de documentos de um domínio de conhecimento restrito, o primeiro, baseado no uso de palavras-chave e o segundo, na utilização de citações para representação dos documentos. Para exemplificar a utilização de diferentes atributos na representação dos documentos foram realizados dois experimentos. O pri-meiro utilizou um algoritmo de categorização baseado em palavras-chave. O segundo experimento gerou as categorias, utilizando Redes Neurais Artificiais, a partir das citações dos artigos. Em um domínio de conhecimento restrito, como o utilizado neste trabalho, foi possível evidenciar a dificuldade na formação de grupos que utilizam palavras-chave como atributo do processo de categorização devido à grande similaridade existente entre aquelas utilizadas pelos autores dos artigos. As citações podem ser, como mostrado no segundo experimento, um atributo alternativo e mais eficiente para esse processo. A formação de um grupo de artigos com um expressivo acoplamento bibliográfico e uma forte relação semântica comprovou a validade do método proposto. A presente pesquisa detalha a metodologia utilizada nos experimentos, mostrando a importância de uma criteriosa fase de pré-processamento para a confiabilidade das bases de dados. Este estudo pode contribuir com as pesquisas relacionadas à representação de documentos em processos de categorização e de recuperação de informação.

  13. Los documentos internos de la industria tabaquera y la prevención del tabaquismo en España The tobacco industry's internal documents and smoking prevention in Spain

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    H. Balcazar

    2003-01-01

    Full Text Available El acuerdo alcanzado en 1998 entre las tabaqueras y la mayoría de los estados de Estados Unidos puso a disposición pública millones de páginas de documentos internos, muchos de ellos con información que la industria hubiera preferido mantener en secreto. La revisión de dichos documentos supone un recurso importante para la lucha internacional contra el tabaquismo, ya que se han archivado electrónicamente, y su acceso se ha facilitado a todo el mundo a través de Internet. Estos documentos proporcionan a los impulsores de las políticas de prevención información relevante y de utilidad. Para favorecer su uso, este estudio describe y enumera los archivos electrónicos con documentos internos de la industria tabaquera, presenta el proceso para su investigación y describe documentos que desvelan las tácticas que en los años setenta, ochenta y noventa emplearon las tabaqueras para manipular la política y a la sociedad en beneficio de sus intereses comerciales en España.A 1998 agreement between several states in the USA and the tobacco industry made millions of pages of internal documents available to the public. Many of these documents contain information that the industry would have preferred to keep confidential. Systematic review of these internal documents constitutes a valuable resource for international tobacco control, since they are available on the Internet and can be accessed from anywhere in the world. These documents provide relevant and useful information to antismoking activists and researchers. To facilitate their use, the present article presents the electronic archives of the tobacco industry's documents, describes methods for conducting searches, and identifies the documents with information on the industry's tactics for manipulating Spanish politics and society for its own commercial interests during the 1970s, 1980s, and 1990s.

  14. Scripts de atendimento em call centers: uma visão de documentos eletrônicosScript for call center attendance: a view on electronic documents

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    Sandra Maria Silveira

    2010-05-01

    Full Text Available O presente artigo contextualiza o serviço de atendimento aos clientes (SAC no âmbito da Ciência da Informação e busca compreender o fenômeno sob o enfoque da organização e do uso da informação. Analisa-se o processo informacional dos serviços de atendimento aos clientes realizado em call centers, com o foco na organização e no uso das bases de informação, tendo em vista a sistematização de parâmetros para subsidiarem a criação, a manutenção e a validação dos scripts de atendimento. Scripts são documentos eletrônicos que contêm orientação para executar procedimentos relativos a produtos e serviços da instituição e na interação com os consumidores. Por fim, identificaram-se os atributos de qualidade de informação que orientam a construção e a manutenção das bases de informações e sistematizaram-se os parâmetros para elaboração das bases de informações em consonância com os processos de organização e uso da informação no âmbito do SAC.The present article contextualizes the service of attendance to clients (SAC as far as the Information Science is concerned. It also seeks to understand the phenomenon under the focus of organization and the use of information. We analyze the informational process of attendance services to clients performed in call centers, focusing on the organization and the use of information bases. This is done aiming at the systematization of parameters to subside the creation, maintenance and validation of scripts for attendance. Scripts are electronic documents that contain orientation to execute procedures related to products and services of the institution and in the interaction with consumers. At last we identify the attributes of quality of information that guide the construction and maintenance of information bases and systematize the parameters for elaboration of information bases according to organization processes and use of information at SAC.

  15. La educación-formación y el reconocimiento del aprendizaje no formal en los documentos europeos y en España

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    María Ángeles Sotés Elizalde

    2008-01-01

    Full Text Available En Europa, la publicación de documentos oficiales relacionados con los diferentes campos que debería abarcar cualquier sistema educativo se ha multiplicado a partir del Consejo de Lisboa de 2000. Como es bien conocido, uno de los objetivos de dicho Consejo es convertir Europa a partir de la década que comenzaba en «la economía basada en el conocimiento más competitiva y dinámica del mundo, capaz de crecer económicamente de manera sostenible con más y mejores empleos y con mayor cohesión social». El hecho de que la consecución de ese objetivo se planteara a través de una estrategia global produjo una proliferación de consultas y reuniones, que han dado lugar a numerosas recomendaciones. Entre ellas destacamos las que se refieren a los sistemas de educación-formación, en los que cobra protagonismo el reconocimiento de las competencias adquiridas mediante el aprendizaje no formal. Me centraré más específicamente en el nivel no universitario.Since the Lisbon Council (2000, documents in relation to the fields that educational systems should cover have certainly increased. It is well known that one goal of this Council for the next decade in the European Union is «to become the most competitive and dynamic knowledge-based economy in the world, capable of sustainable economic growth with more and better jobs and greater social cohesion». Such a goal should be achieved by means of anoverall strategy, so different enquiries and meetings were set up and numerous statements have been published. Among them I have chosen those which refer to education & training systems, where the outcomes of non-formal or informal learning rise to prominence. I focus more specifically on Vocational Education and Training (VET.

  16. Validación de una escala para el análisis de documentos: técnica de comunicación en las organizaciones educativas

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    Antonia LÓPEZ MARTÍNEZ

    2009-11-01

    Full Text Available RESUMEN: En este trabajo vamos a presentar una herramienta para analizar los documentos de planificación que está formada por seis categorías: autonomía, innovación, evaluación, relaciones, reguladora y estructura, cuyo objetivo es obtener evidencias sobre la situación de las prácticas de la enseñanza secundaria, en relación con la diversidad. Forma parte de una iniciativa coordinada por diversos grupos de investigación de cinco universidades andaluzas. En su desarrollo hemos analizado conceptos afines como lenguaje, comunicación, interacción, sociedad y cultura. Estudiar y comprender los textos escritos nos permite conocer, en profundidad, muchos temas y áreas de estudio que abarcan desde los enfoques lingüísticos, estilísticos y retóricos hasta las líneas de investigación de orientación psicológica y, en especial, sociológica. A través del análisis de los pensamientos y sentimientos de las personas, pertenecientes a la organización educativa, profesorado, padres y estudiantes podemos interpretar la cultura existente que nos muestra la vida real en los centros educativos.ABSTRACT: In this work we present a tool of institutional culture comprising six dimensions: autonomy, innovation, assessment, relationship, regulation and staicture. Our main proposal was to identify teaching strategies which are used for adapting the common curriculum to the diversity of the student population, and it aróse as part of an initiative coordinated by different research groups from five universities in Andalucía. We analysed related concepts such as language, communication, interaction, society and culture. The study of written texts provided us with in-depth knowledge of many topics and áreas of study ranging from linguistic, stylistic and rhetorical approaches to pedagogically orientated research lines, particularly sociological ones. Analysis of the thoughts and feelings of the persons involved in the school -teachers, parents and

  17. Factores que determinan realizar la reserva provisional de las investigaciones preliminares en los delitos de falsificación de documentos por los fiscales en el Distrito Fiscal de Ucayali en los años 2012-2013

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    Alvarado Cabrera, Yenni Edita

    2015-01-01

    La presente investigación tuvo objetivo identificar los factores que influyen en la reserva provisional de las investigaciones preliminares en los delitos de falsificación de documentos, en las Fiscalías Provinciales Penales Corporativas de la Provincia de Coronel Portillo — Ucayali, en tos años 2012-2013, planteándose como una hipótesis que, la omisión de la condición de procedibilidad, la inexistencia de peritos criminalisticos y la falta de modificación del numeral 4) del artículo 3340 del...

  18. Nuevas aportaciones para la historia de la arqueología en la provincia de Málaga: documentos del Museo Nacional de Ciencias Naturales (I: Las antigüedades de Cártama)

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    Berlanga-Palomo, Maria Jose

    2002-01-01

    En este artículo damos a conocer los documentos conservados en el Archivo del Museo Nacional de Ciencias Naturales, pertenecientes al antiguo Gabinete del Historia Natural, en los que se documenta la visita en 1779 del Capitán del Regimiento de Infantería de voluntarios de Cataluña, Gerónimo Verde, a la villa de Cártama (Málaga), donde se da noticia de las antiguedades allí descubiertas a mediados de ese mismo siglo.

  19. A EDUCAÇÃO SECUNDÁRIA NA AMÉRICA LATINA COMO UM DIREITO DEMOCRÁTICO E UNIVERSAL: UMA ANÁLISE DE DOCUMENTOS DO BANCO MUNDIAL E DO BANCO INTERAMERICANO DE DESENVOLVIMENTO

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    Tello*, Cesar; Mainardes**, Jefferson

    2015-01-01

    * Professor da Universidad Nacional Tres de Febrero (UNTREF), da Universidad Nacional San Martin (UNSAM) e da Universidad Nacional de La Plata (UNLP). E-mail: ** Doutor em Educação (Política Educacional) pelo Institute of Education - University of London. Professor do Programa de Pós-Graduação em Educação da Universidade Estadual de Ponta Grossa - UEPG. E-mail: artigo apresenta uma análise de documentos recentes do Banco Mundial e ...

  20. MIMESIS Y BILINGÜISMO IDEOLÓGICO: UN ANÁLISIS CRÍTICO DEL DISCURSO SOBRE LA DIVERSIDAD EN UN DOCUMENTO DE POLÍTICA EDUCATIVA UNIVERSITARIA EN AMÉRICA LATINA

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    Doris Santos

    2013-01-01

    Full Text Available Resumen A partir de una caracterización de los documentos de política educativa como actos institucionales vinculados a representaciones sociales de grupos humanos particulares, se presentan los resultados de un análisis textual del Informe del Proyecto Tuning - América Latina, de 2007. Este análisis buscó exponer las representaciones que había sobre los estudiantes universitarios latinoamericanos y las situaciones de bilingüismo e interculturalidad en las que están inmersos. Desde un análisis crítico del discurso, interesa presentar estos hallazgos para evidenciar el anclaje de una especie de "bilingüismo ideológico" en los miembros de las universidades latinoamericanas que suscriben este proyecto. Dicho bilingüismo se ha consolidado con una práctica de las comunidades universitarias de la región: "imitar" políticas educativas de otras latitudes; al hacerlo, desconocen la riqueza y aportes que puede proveer la diversidad latinoamericana "nombrada" en el documento. Esta ideología de la "sintonía", requerida en los procesos de globalización de la educación superior, coexiste con otra igualmente lexicalizada en este tipo de contextos educativos: la autonomía universitaria.

  1. Individual monitoring of external exposure in terms of personal dose equivalent, H{sub p}(d); Dosimetria personale esterna in termini di equivalente di dose personale, H{sub p}(d). Atti. Giornata di studio, Bologna, 28 febbraio 2001

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    Fantuzzi, E. [ENEA, Div. Protezione dell' Uomo e degli Ecosistemi, Centro Ricerche Ezio Clementel, Bologna (Italy)

    2001-07-01

    The institute for Radiation Protection of ENEA - Bologna has organised a one day-workshop on the subject: Individual monitoring of external exposure in terms of personal dose equivalent, H{sub p}(d). The aim of the workshop was the discussion of the new implications and modifications to be expected in the routine individual monitoring of external radiation, due to the issue of the Decree 241/00 (G.U. 31/8/2000) in charge since 01/01/2001. The decree set up in Italian law the standards contained in the European Directive EURATOM 96/29-Basic Standards for the Protection of Health of Workers and the General Public against Dangers arising from Ionizing Radiation. Among others, the definition of the operational quantities for external radiation for personal and environmental monitoring, H{sub p}(d) e H{sup *}(d) respectively as defined by ICRU (International Commission for Radiation Units and Measurements), requires to update the methods of measurements and calibration of the personal dosemeters and environmental monitors. This report collects the papers presented at the workshop dealing with the Personal Dose Equivalent, H{sub p}(d), the conversion coefficients, H{sub p}(d)/K{sub a} e H{sub p}(d)/{sub ,} obtained through Monte Carlo calculations published by ICRU and ICRP (International Commission for Radiation Protection), the new calibration procedures and the practical implication in the routine of individual monitoring in terms of H{sub p}(d). Eventually, in the last chapter, the answers to Frequently Asked Questions (FAQ) are briefly reported. [Italian] L'Istituto per la Radioprotezione dell'ENEA di Bologna ha organizzato una giornata di studio Dosimetria personale esterna in termini di equivalente di dose personale, H{sub p}(d). Lo scopo della giornata e' stato quello di discutere le novita' e le modifiche da apportare alle pratiche di monitoraggio dell'esposizione esterna alle radiazioni ionizzanti, a seguito dell'entrata in vigore

  2. Documentos audiovisuales y prácticas laborales en las Bibliotecas Populares de La Plata: un estudio de caso Audiovisual documents and work practices in Popular Libraries of La Plata: a case study

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    Javier Planas

    2007-12-01

    Full Text Available Se describe y analiza el tratamiento que los documentos audiovisuales reciben, a través de las políticas de desarrollo de colecciones, los procesos técnicos y los servicios, en una muestra de bibliotecas populares de la ciudad de La Plata. Se señala la existencia de un panorama común a la mayor parte de las bibliotecas. Se destacan las características de dos instituciones que se constituyen como excepciones a esta generalidad.The treatment received by audiovisual documents is described and analyzed in relation with the policies of collection development, technical processes and services, in a sample of popular libraries located in La Plata City. The existence of a common picture in the great majority of these libraries is corroborated. The characteristics of two of the libraries are noted as exceptions to the general situation.

  3. Processo histórico de elaboração dos documentos curriculares para a educação física na rede pública municipal de ensino de Campo Grande – MS

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    Jorge Luis D'Avila

    2017-02-01

    Full Text Available Este artigo resulta de uma pesquisa bibliográfica e documental e tem como objetivo apresentar o processo histórico de elaboração dos documentos curriculares para a Educação Física na rede pública municipal de ensino de Campo Grande, Mato Grosso do Sul, destacando aspectos relevantes para compreender o pensamento ideológico assumido pela rede em questão. Para tanto recorremos ao método materialismo histórico dialético verificando assim, que as propostas curriculares para a Educação Física foram elaboradas para atender as exigências impostas pelo capital no que se refere a uma formação básica para o mercado de trabalho.

  4. Estudio y desarrollo de software para la gestión y aprobación electrónica de documentos en el registro individual de contratos dentro del Ministerio de Relaciones Laborales - Dirección Regional de Trabajo del Austro

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    Morocho Minchala, Henry Paúl; Arévalo Noriega, Pablo José

    2012-01-01

    El proyecto pretende minimizar el uso del papel y los procesos manuales mediante el manejo de contratos digitales proporcionando una mejor gestión de los documentos que ingresan a la entidad. Actualmente se pueden observar la fila de personas esperando por contratos que han sido solicitados y que no se han encontrado, o de personas con formularios de petición de registro del contrato individual de trabajo de sus empleados. Al mantener los documentos físicos, dificulta la búsqueda y ocupa el t...

  5. Documento para o encontro de especialistas em aspectos da discriminação racial relativos ao gênero Background paper for the expert meeting on the gender-related aspects of race discrimination

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    KIMBERLÉ CRENSHAW

    2002-01-01

    Full Text Available Tanto os aspectos de gênero da discriminação racial quanto os aspectos raciais da discriminação de gênero não são totalmente apreendidos pelos discursos dos direitos humanos. O presente documento, baseado no crescente reconhecimento de que as discriminações de raça e de gênero não são fenômenos mutuamente excludentes, propõe um modelo provisório para a identificação das várias formas de subordinação que refletem os efeitos interativos das discriminações de raça e de gênero. Este documento também sugere um protocolo provisório a ser seguido, a fim de melhor identificar as situações em que tal discriminação interativa possa ter ocorrido e, além disso, defende que a responsabilidade de lidar com as causas e as conseqüências dessa discriminação deva ser amplamente compartilhada entre todas as instituições de direitos humanos.Neither the gender aspects of racial discrimination nor the racial aspects of gender discrimination are fully comprehended within human rights discourses. Building on the growing recognition that race and gender discrimination are not mutually exclusive phenomena, this background paper forwards a provisional framework to identify various forms of subordination that can be said to reflect the interactive effects of race and gender discrimination. It suggests a provisional protocol to be followed to better identify the occasions in which such interactive discrimination may have occurred, and posits further that the responsibility to address the causes and consequences of such discrimination be shared widely among all human rights institutions.

  6. Vida de agricultoras e histórias de documentos no Sertão Central de Pernambuco Lives of peasant and worker women and stories of documents in the South Central Sertão of Pernambuco

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    Rosineide de L. Meira Cordeiro

    2007-08-01

    Full Text Available O artigo enfoca como as mulheres agricultoras, ao terem acesso a direitos sociais, especialmente à Previdência Social, lidam com a normatização e a regulamentação dos processos de nascimento, envelhecimento e morte. O objetivo é analisar as dificuldades e as estratégias que as mulheres utilizam para cumprirem as exigências legais de comprovação do trabalho na agricultura familiar através de documentos civis e profissionais. A pesquisa foi realizada nos municípios de Santa Cruz da Baixa Verde e Triunfo, situados no Sertão de Pernambuco, Nordeste do Brasil. A ausência de documentos é reveladora dos parâmetros de modernidade instaurados no país e deve ser entendida à luz das intersecções de gênero, classe, raça, etnia e critérios geopolíticos.The article focuses on how peasant and worker women deal with norms and rules about birth, ageing and death, in the process of getting access to social rights, especially to Social Security. The aim is to analyze difficulties and strategies used by women in order to comply with the legal demands of proof of work experience in family farming by way of civil and professional documents. Research was undertaken in the municipalities of Santa Cruz da Baixa Verde and Triunfo, in the Pernambuco Sertão in Northeast Brazil. The absence of documents reveals how parameters of modernity are installed in the nation, understanding them as necessarily related to gender, class, race, ethnicity and geopolitical criteria.

  7. Ways For Research: What Said The Papers Of Secretary Of Municipal Porto Alegre About Working Collective Caminos De Pesquisa: O Qué Dicem Los Documentos De La Secretaria De Educación Del Municipio De Porto Alegre Sobre El Trabajo Colectivo Caminhos De Pesquisa: O Que Dizem Os Documentos Da Secretaria Municipal De Educação De Porto Alegre Sobre o Trabalho Coletivo

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    2008-08-01

    Full Text Available

    This article was constructed from the information collected for the doctorado research of that tematize the collective work of the professors of Physical Education of the Municipal Net of Education of Porto Alegre. One of the procedures adopted in the construccion of the research – that it is in progress – was the document analysis of the city department of Education being this of basic important to understand the espace of teaching work in this net Education. The document analysis caried trought allowed to understand that even so change in the mangement of the Secretaried has occurred, the colletive work remens as possibility of concretion of the Politician-Pedagogical Proposal in the school of this city.

    Este artículo fue construído de la información recogida para la investigación del doctorado que tematiza el trabajo colectivo de los profesores de la Educación Física de la Red Municipal de La Educación de Porto Alegre. Uno de los procedimientos adoptados em la construcción de la investigación que él está em marcha – fue el analisis de documentos del departamento de la ciudad de la educación, siendo el de la importância básica para entender el espacio del trabajo de ensenanza em esta Red de la Educación. Sigue habiendo el analisis de documentos llevó permitido através para entender que sin embargo há ocurrido el cambio em la gerencia de la Secretaría, el trabajo colectivo como posibilidad de concretión de la oferta Politico-Pedagogica en las escuelas desta ciudad.

    Este artigo trata do trabalho coletivo dos professores de Educação Física da Rede Municipal de Ensino de Porto Alegre. Através da análise de documentos da Secretaria Municipal de Educação, na pesquisa que está em andamento esse procedimento é de fundamental importância para compreender o

  8. RESEÑA de : López Villalba, José Miguel. Las finanzas de un concejo castellano: Piedrahíta, siglos xv–xvii. Estudio y documentos. Volumen XIII (1521–1522. Ávila: Ediciones de la Institución Gran Duque de Alba de la Excma. Diputación Provincial de Ávila.

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    Pedro Luis Lorenzo Cadarso

    2015-06-01

    Full Text Available RESEÑA de : López Villalba, José Miguel. Las finanzas de un concejo castellano: Piedrahíta, siglos xv–xvii. Estudio y documentos. Volumen XIII (1521–1522. Ávila: Ediciones de la Institución Gran Duque de Alba de la Excma. Diputación Provincial de Ávila.

  9. De que modo os textos oficiais prescrevem o trabalho do professor? Análise comparativa de documentos brasileiros e genebrinos How do official texts prescribe the teacher's work? A comparative analysis of the brazilian and genebrian Documents

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    Anna Rachel Machado

    2005-12-01

    Full Text Available Neste artigo, são apresentados os resultados de análises de dois documentos produzidos por instâncias oficiais para orientar o trabalho dos professores no Brasil e na Suíça. De um lado, buscamos detectar as características da textualização da prescrição do trabalho do professor. Os resultados mostram que, além das propriedades comuns aos textos prescritivos (apagamento do enunciador, contrato de felicidade etc., esses documentos se caracterizam por apresentar uma estrutura temática mais complexa, articulando um agir prescritivo, um agir-fonte e um agir - prescrito. Além disso, buscamos identificar as formas de construção do objeto da prescrição, o que permitiu verificar que, nos dois contextos, esse objeto se configura como uma proposta pedagógica global e não como trabalho concreto dos professores, não estando eles representados, nesses textos, como atores que têm uma real responsabilidade no desenvolvimento das propostas e, paralelamente, apresentando-se os alunos como alvos inertes. Esse trabalho também nos permitiu levantar algumas diferenças das formas de textualização das prescrições examinadas, diferenças essas que relacionamos ao contexto político-econômico dos dois países. Ao final, chegamos a questionamentos referentes às razões da não-consideração do trabalho efetivo dos professores nesse tipo de documento.In this article we present the results of two documents produced by official agencies that aim at guiding the teachers' work in Brazil and in Switzerland. On the one hand, we focused on detecting the textualization features used to prescribe the teacher's work. Results show that besides the common prescriptive features of the two texts (enunciator's erasure, felicity contract etc, these documents carry a more complex thematic structure, articulating a prescriptive doing, a source-doing and a prescribed-doing. We have also tried to identify the forms of building the object of prescription, which

  10. Actualización en síndrome hemolítico urémico atípico: diagnóstico y tratamiento. Documento de consenso

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    Josep M. Campistol

    2015-09-01

    Full Text Available El síndrome hemolítico urémico (SHU es una entidad clínica definida por la tríada anemia hemolítica no inmune, trombocitopenia e insuficiencia renal aguda, en la que las lesiones subyacentes están mediadas por un proceso de microangiopatía trombótica (MAT sistémico. Distintas causas pueden desencadenar el proceso de MAT que caracteriza el SHU. En este documento consideramos SHU atípico (SHUa como el subtipo de SHU en el que los fenómenos de MAT son fundamentalmente consecuencia del daño producido en el endotelio de la microvasculatura renal y de otros órganos por desregulación de la actividad del sistema del complemento. En los últimos años se han identificado diversas mutaciones en genes del sistema del complemento asociados a SHUa, que explicarían aproximadamente el 60% de los casos de SHUa, y se han caracterizado funcionalmente numerosas mutaciones y polimorfismos asociados a SHUa que han permitido determinar que la patología se produce como consecuencia de la deficiente regulación de la activación del complemento sobre las superficies celulares y que lleva al daño endotelial mediado por la activación del C5 y de la vía terminal del complemento. Eculizumab es un anticuerpo monoclonal humanizado que inhibe la activación del C5, bloqueando la generación de la molécula proinflamatoria C5a y la formación del complejo de ataque de membrana. En estudios prospectivos en pacientes con SHUa su administración ha demostrado la interrupción rápida y sostenida del proceso de MAT, con una mejora significativa de la función renal a largo plazo y una reducción importante de la necesidad de diálisis y el cese de la terapia plasmática. En función de las evidencias científicas publicadas y la experiencia clínica acumulada, el Grupo Español de SHUa publicamos un documento de consenso con recomendaciones para el tratamiento de la enfermedad (Nefrología 2013;33(1:27-45. En la presente versión online del documento se

  11. Representações da História e cultura Afro-Brasileira e Africana nos documentos escolares de uma escola de Ensino Fundamental do Paraná

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    Sandra Aparecida Batista

    2017-05-01

    Full Text Available Diante da grande diversidade étnico-racial e dos conflitos e tensões em torno das representações da História e Cultura Afro-Brasileira e africana, o objeto de estudo desta pesquisa são as representações que se refletem nos documentos escolares, Projeto Político Pedagógico (PPP, Proposta Pedagógica Curricular (PPC e Plano de Trabalho Docente (PTD que sistematizam a organização didática pedagógica de uma escola do Ensino Fundamental do estado do Paraná. Partimos de algumas indagações que são discutidas ao longo do texto, a saber: o que são representações, conteúdos da disciplina de História isentos ou repletos de representações, e por fim a análise dos documentos escolares e dos respectivos conteúdos da disciplina de História referente às Séries Finais do Ensino Fundamental, considerando que os mesmos são permeados de representações. O estudo aponta que as representações denominadas de hegemônicas, advindas da classe dominante branca com um discurso preconceituoso e estereotipado foram sendo substituídas por representações anti-hegemônicas, que versam sobre o reconhecimento e valorização da História e Cultura Afro-Brasileira e Africana, tendo a Lei 10 639/03 um papel importante neste sentido. Por sua vez, alerta que não se trata de uma perspectiva homogeneizadora e uniformizadora, ou de transição curricular do protagonismo branco e europeu para o negro e africano, mas de uma visão plural, dinâmica e contextualizada da temática.

  12. Visões de leitura e concepções que fundamentam os documentos oficiais de ensino e aprendizagem de língua estrangeira Reading views and concepts underlying the official documents on second language teaching and learning

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    Juliana Santana Cavallari

    2012-12-01

    Full Text Available O objetivo deste artigo é abordar as visões de leitura e as concepções que embasam o processo de ensino e aprendizagem de língua estrangeira (LE na escola regular de acordo com os documentos oficiais elaborados para orientação da prática docente, a saber: os Parâmetros Curriculares Nacionais de Língua Estrangeira do Ensino Fundamental (PCN-LE, 1998, a Proposta Curricular do Estado de São Paulo, voltada para o ensino de Língua Estrangeira Moderna (MEC/SEE, 2008 a, e o Caderno do Professor, destinado para os professores de inglês do ensino médio (SEE, 2008 b. Para tanto, após percorrer as diferentes visões de leitura, com base nos estudos de Coracini (1995, 2000, 2001 e Leffa (1996, foram retomados alguns trechos dos documentos em questão, de modo a observarmos como as propostas e orientações pedagógicas se configuram discursivamente e se são ou não condizentes com a orientação teórica que o material analisado acredita adotar. Em última instância, este estudo pretende refletir sobre os efeitos das concepções de leitura, sujeito e linguagem na constituição e formação do sujeito-aluno leitor de LE. Do ponto de vista teórico, o presente artigo se baliza pela perspectiva discursiva.The purpose of this study is to point out the reading views and the concepts underlying the second language teaching and learning process at regular schools, according to official documents which have been developed to guide the teaching practice, such as: the National Curriculum Parameters (1998, São Paulo's Curriculum Proposal, concerning the teaching of Modern Languages (MEC/SEE, 2008 a, as well as the manual addressed to high school English teachers (SEE, 2008 b. In order to achieve our purpose, after going through different reading views, based on Coracini's (1995, 2000, 2001 and Leffa's (1996 studies, some excerpts of the documents were revisited, so that we could observe how the pedagogical orientations are discursively designed and

  13. Guía de actuación para el farmacéutico comunitario en pacientes con hipertensión arterial y riesgo cardiovascular: Documento de consenso

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    Sabater Hernández D

    2011-06-01

    Full Text Available La hipertensión arterial (HTA es un problema de salud estrechamente relacionado con un aumento del riesgo de padecer una enfermedad cardiovascular. Además, la HTA puede producir o empeorar la lesión de ciertos órganos diana, lo que también puede influir negativamente en el pronóstico cardiovascular del paciente. En España, la HTA es una condición muy frecuente, afectando a unos diez millones de sujetos adultos. Por su accesibilidad y formación especializada en materia de medicamentos, el farmacéutico comunitario puede jugar un papel clave en la detección y seguimiento del paciente con HTA. Hasta la fecha, se han publicado numerosas guías clínicas sobre la atención a pacientes con HTA, dirigidas principalmente a médicos. Sin embargo, cada vez es más evidente la necesidad de que todos los profesionales de la salud participen en la atención integral a los pacientes con HTA y riesgo cardiovascular (RCV. La cooperación entre farmacéutico, médico, personal de enfermería y otros profesionales sanitarios es imprescindible para conseguir resultados que optimicen la prevención cardiovascular y mejoren la calidad de vida del paciente. Así, a fin de promover la gestión compartida de los pacientes con HTA y RCV se publica este documento, cuyo principal destinatario es el farmacéutico comunitario. El presente documento pretende ser una herramienta de referencia que dé soporte a los programas de atención farmacéutica al paciente con HTA y RCV que se están desarrollando actualmente en las oficinas de farmacia. El texto ha sido desarrollado de forma consensuada entre expertos de la Sociedad Española de Hipertensión-Liga Española para la Lucha contra la Hipertensión Arterial (SEH-LELHA, la Sociedad Española de Farmacia Comunitaria (SEFAC y el Grupo de Investigación en Atención Farmacéutica de la Universidad de Granada (GIAF-UGR.

  14. Los Valores Ético-profesionales que Promueven los Documentos Rectores de un Universidad Pública en México. The Professional Ethic Values Promoted by Governing Documents of a Public University in Mexico

    Directory of Open Access Journals (Sweden)

    Cecilia Osuna Lever

    2008-08-01

    Full Text Available This study analyses the professional-ethic values promoted by education policy in public university education in Mexico, the semantic correspondence of said policy with programs, and the strategies for its implementation. Following the methodology of textual analysis, we reviewed the National Programs of Education, documents that embed the academic plan at the Universidad Autónoma de Baja California, and the curricula of licenciaturas in the areas of natural science and engineering and technology. It was identified that the core elements of university education are social compromise, professional competence, and education in values. Our findings indicate that there is textual correspondence among the most relevant categories of the documents; however, it is worth pointing out the absence of strategies that explicitly promote student development of professional-ethic values. Este trabajo analiza los valores ético-profesionales que la universidad pública en México promueve en sus políticas educativas, la correspondencia semántica de éstas con los programas y las estrategias para su implementación. Usando la metodología de análisis de contenido se revisaron los Planes Nacionales de Educación de México, los documentos orientadores de la vida académica de la Universidad Autónoma de Baja California, así como los currículos de las licenciaturas en las áreas de ciencias naturales e ingeniería y tecnología. Se identificó que el compromiso social, la competencia profesional y la formación en valores son los principales planteamientos orientadores de la universidad. Se encontró correspondencia textual entre las categorías más relevantes de los documentos, sin embargo, se advierte la ausencia de estrategias que promuevan explícitamente la formación en valores ético-profesionales en los estudiantes.

  15. Introduction to Life Science (Introduccion a la Ciencia Biologica).

    Science.gov (United States)

    Barnhard, Diana; And Others

    These materials were developed to meet an expressed need for bilingual materials for a secondary school Life Science Course. Eight units were prepared. These include the following topics: (1) Introduction to the Scientific Method; (2) The Microscope; (3) The Cell; (4) Single-celled Protists, Plants, and Animals; (5) Multicellular Living Things;…

  16. Auto-organizzazione biologica, memoria distribuita e sviluppo della conoscenza

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    Mirko Di Bernardo

    2015-01-01

    Full Text Available The essay focuses, through the use of a specific epistemological approach related to complexity theory in its extended version, on issues of border regarding the close relationship that exists between cognition and life, such as the idea of memory as a multisystemic and distributed natural process, the genesis of meaning in the context of the deep processes of self-organization, and the relationship - at the level of higher cognitive activity proper to man - between perception, learning (assimilation of information and thought (morphogenesis in action. With respect to the possible delineation of new models for what concerns the process of knowledge development, the text shows the recent results of research regarding an unprecedented frontier closely linked with the emergence of a real conceptual revolution at the level of the analysis of that particular entanglement of information, meaningful complexity, memory, causality, teleology and intentionality that characterizes the unfolding of the natural forms of human cognition. In such a context, the mnemonic function is set up as a dynamic and deep process of reconstruction and a connection of internal self-reflection operations, rather than as a mere "storage" of data in a static mental space. Just as the world of the first monadic order, on which stands the classical measure of Shannon information, appears related to the existence of specific forms of invariance and the definition of unique areas of measurement, in terms of higher orders, however, we have the presence of specific dichotomies, of different potentials that are given simultaneously, an evolutionary bricolage which is realized by successive interlocking states and yet tied together in a holistic manner within a process of dialectical synthesis between form, function and meaning.

  17. Construir o edifício documentário: concepções de Paul Otlet para uma ciência e uma técnica dos documentos

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    Amanda Pacini de Moura

    Full Text Available O artigo apresenta as técnicas e propostas teórico-práticas desenvolvidas por Paul Otlet, para o tratamento de documentos, com propósito de recuperação e disseminação. Analisam-se o método documentário, responsável pela extração e disponibilização da informação documentada, e o conceito do repertório, elaborado para dispor e expor essa informação de maneira sintetizada, atualizada e acessível na Enciclopédia Documentária. Ressalta-se a importância das ideias subjacentes à proposta de Otlet, identificando-as particularmente nas figuras e metáforas adotadas por ele e na visão de mundo internacionalista, que sustentara a formação de suas ideias.

  18. Plano de classificação de documentos arquivísticos e a teoria da classificação: uma interlocução entre domínios do conhecimento

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    Elaine Rosa Rios

    Full Text Available Estudo sobre os princípios teóricos e metodológicos que envolvem a elaboração dos planos de classificação documental em arquivos, com ênfase no conhecimento do contexto, no qual se insere a instituição. Os princípios da teoria da classificação que regem a construção de linguagens documentárias e, em especial, as notacionais, no âmbito da organização do conhecimento, devem fundamentar a construção dos planos de classificação para documentos arquivísticos. Conclui que a Arquivologia deve aprofundar o diálogo com outras áreas do conhecimento, especialmente a Ciência da Informação, no que tange à análise e a representação do conhecimento.

  19. Enciclopédia eletrônica: semelhanças e diferenças com o documento tradicional 10.5007/1518-2924.2002v7n14p19

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    Magda Chagas Teixeira

    2002-01-01

    Full Text Available Acreditando que o estudo aprofundado dos documentos eletrônicos poderá contribuir para o seu aperfeiçoamento enquanto ferramentas importantes que são na disseminação e recuperação de informações, realiza-se, neste trabalho, uma análise do Almanaque Abril CD-ROM 98, procurando conhecer suas características e potencialidades, bem como suas semelhanças e diferenças com a enciclopédia tradicional. Para tanto, toma-se como base o trabalho desenvolvido por Hoey (1986 com relação às obras de referência, por ele denominadas de Colônias de Discursos. Após a análise, foi possível perceber que todas as características apresentadas pelo autor podem ser encontradas no Almanaque Abril CD-ROM 98, sendo que muitas delas aparecem de forma acentuada devido aos recursos oferecidos pela recuperação eletrônica de informações.

  20. La imagen como documento gráfico visual en la enseñanza de la historia en Educación Primaria en perspectiva comparada. Análisis y propuesta didáctica

    Directory of Open Access Journals (Sweden)

    Virginia Gámez-Ceruelo

    2017-01-01

    Full Text Available El desarrollo tecnológico del siglo XXI ha ampliado los estímulos visuales e instala la necesidad de promover una alfabetización visual progresiva. Uno de los soportes más usados en aula y con mayor presencia de imágenes son los libros de texto. Así, este artículo pretende: 1 valorar los aprendizajes promovidos en las actividades de los libros de texto que emplean imágenes en Chile y España y 2 sugerir directrices didácticas para su uso como documento gráfico visual en la enseñanza de las ciencias sociales. Se emplearon dos perspectivas metodológicas, la cualitativa y la comparada. Los resultados indican que existe un creciente desarrollo de facultades de aproximación analítica y crítica a las imágenes en Chile, mientras en Cataluña su desarrollo es muy incipiente.

  1. MUÑOZ-ALONSO, G. y VILLASEÑOR, I. Descubriendo el pensamiento a través del documento: las Historias de la Filosofía en las Bibliotecas de la Red Madroño

    Directory of Open Access Journals (Sweden)

    L. Fernando Ramos Simón

    2011-03-01

    Full Text Available El libro, Descubriendo el pensamiento a través del documento, tiene su punto de arranque, tal y como se nos advierte en el mismo, en los años noventa. Por dos caminos, aparentemente separados, tanto Isabel Villaseñor, docente de la Facultad de Ciencias de la Documentación de la Universidad Complutense de Madrid, como Gemma Muñoz-Alonso, docente de la Facultad de Filosofía de esa misma Universidad, y docente hasta hace poco vinculada a la docencia en la Facultad de Ciencias de la Documentación, dedicaban sus investigaciones a temas relacionados con las Fuentes de Información Documentales. Después de la tesis doctoral, y la publicación de la obra Fuentes de Información en Filosofía Jurídica española (siglos XIX-XXI, de Isabel Villaseñor, ambas autoras decidieron colaborar en una obra en la que pudieran, por fin, plasmar conjuntamente sus inquietudes intelectuales. En una palabra: el libro tiene dos autoras, cuya participación en el mismo ha sido complementaria, la mirada del profesional de la Documentación, y el profesional de la Filosofía.........

  2. Hiperlipidemia familiar combinada: documento de consenso

    OpenAIRE

    Pedro Mata; Rodrigo Alonso; Antonio Ruíz-Garcia; Jose L. Díaz-Díaz; Noemí González; Teresa Gijón-Conde; Ceferino Martínez-Faedo; Ignacio Morón; Ezequiel Arranz; Rocío Aguado; Rosa Argueso; Leopoldo Perez de Isla

    2014-01-01

    La hiperlipidemia familiar combinada (HFC) es un trastorno muy frecuente asociado a enfermedad coronaria prematura. Se transmite de forma autosómica dominante, aunque no existe un gen único asociado al trastorno. El diagnóstico se realiza mediante criterios clínicos, y son importantes la variabilidad del fenotipo lipídico y la historia familiar de hiperlipidemia. Es frecuente la asociación con diabetes mellitus tipo 2, hipertensión arterial y obesidad central. Los pacientes con HFC se cons...

  3. La Biblioteca del Club Español a través de sus documentos institucionales: 1873-1920 = The Library of the Club Español through its institutional documents: 1873-1920

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    Carla Kollenberger

    1999-12-01

    Full Text Available Este artículo investiga el origen y la evolución histórica de la "Biblioteca del Club Español" en el contexto político, social, cultural y bibliotecario entre 1873 y 1920. Se presta especial atención a los siguientes temas: personalidades de la Biblioteca, organización y funcionamiento institucional, características de la colección y actividades culturales. La metodología se sustenta en el análisis e interpretación de fuentes primarias, tanto documentos del "Club Español" como de su biblioteca. Esta se presenta como un gabinete de lectura clásico de una colectividad, abierto a sus miembros, con una propuesta bibliográfica que pretendía rescatar los valores culturales españoles, y al mismo tiempo, responder a las preferencias literarias de la época. NMT = This article examines the origin and the historical evolution of the «Club Español Library» in the political, social, cultural and librarian context between 1873 and 1920s. It is paid special attention to the following topics: personalities of the Library, organization and institutional operation, characteristic of the collection and cultural activities. The methodology is sustained in the analysis and interpretation of primary sources, so much documents of the «Club Español» as of its library. This library is presented as a classic reading cabinet of a collectivity, opened to its members, with a bibliographical proposal that was intended to recapture the Spanish cultural values and, simultaneously, to satisfy the literary preferences of that time. NMT

  4. Papeletas para un diccionario. A propósito de unos documentos de la Biblioteca Cervelló del Museo del Prado y la historiografía del grabado español en el siglo XIX

    Directory of Open Access Journals (Sweden)

    Matilla, José Manuel

    2006-02-01

    Full Text Available The Cervelló Library of the Museo del Prado contains documents related to Spanish artists and among them is a group of unpublished records with biographic and artistic information about Spanish engravers active at the end of the 18th century and beginning of the 19th. These labels were worded around 1865-68 by Ramón Sanjuanena y Nadal, contributor to the Magazine El Arte en España and involve an attempt of continuation of Ceán’s Dictionary in which living artists were not included. These papers record, for the first time, all information kept in the archives of the Academia de Bellas Artes de San Fernando, and anticipate what Ossorio would publish ten years later in his Galería biográfica.Entre los documentos relativos a artistas españoles conservados en la Biblioteca Cervelló del Museo del Prado se encuentra un conjunto de papeletas inéditas con información biográfica y artística sobre grabadores españoles activos a finales del siglo XVIII y comienzos del siglo XIX. Las papeletas fueron redactadas hacia 1865-68 por Ramón Sanjuanena y Nadal, colaborador de la Revista El Arte en España, y suponen un intento de continuación del Diccionario de Ceán, quién no incluyó en su obra a los artistas vivos. Las papeletas recogen por primera vez la documentación conservada en el archivo de la Academia de Bellas Artes de San Fernando, y anticipan lo que publicará Ossorio una década más tarde en su Galería biográfica.

  5. Preservação digital: a influência da gestão dos documentos digitais na preservação da informação e da cultura / Digital preservation: the influence of digital documents management in the preservation of information and culture

    Directory of Open Access Journals (Sweden)

    Humberto Celeste Innarelli

    2011-01-01

    Full Text Available A cultura de nossa sociedade preservada ao longo tempo através da utilização de meios de transmissão e da apropriação do conhecimento encontra-se ameaçada, já que as novas tecnologias da informação e comunicação tornam frágil a forma de registro e processamento da informação. Esta fragilidade é refletida nos modelos de gestão de documentos digitais permanentes, os quais sofrem influência direta dos profissionais da administração e da Tecnologia da Informação e Comunicação, atuais gestores da informação. Este artigo pretende contextualizar, de uma forma macro, a influência desses profissionais na preservação dos documentos digitais e os problemas gerados pela gestão inadequada do documento digital permanente.

  6. Utilidad de la clasificación de las revistas en la categoría dermatología de Index Medicus y de la Journal Citation Reports para localizar documentos de dermatólogos españoles (1987 y 2000

    Directory of Open Access Journals (Sweden)

    Ramos Rincón, José Manuel

    2003-12-01

    Full Text Available The objective is to compare the utility of the classifications of Journal Citation Reports (JCR (category «Dermatology & Venereal Diseases» (D&VD and Index Medicus (IM (category «Dermatology» («D» in order to locate the publications of Spanish dermatologists during the period 1987-2000 covered by MedLine database. We found 1,517 documents in dermatology journals, in which 1,130 (74.5% the first author was a dermatologist, in 122 (8% a dermatologist was not the first author, and in 265 (17.5% there was no dermatologist as author. Those journals included in section «D&VD» of JCR and not included in section «D» of IM presented the majority of documents without dermatologist (91.5%. On the other hand, only 8.8% of documents published in journals included in section «D&VD» of JCR and «D» of IM were not signed by a dermatologist (p < 0.001. In documents non-signed by dermatologists, the first author belongs to Allergy in 122 documents (8% followed byPathology in 78 cases. The 96.7% of 122 documents assigned to Allergy were published in the journal Contact Dermatitis. In conclusion, the classification used by IM grouping dermatological journals is a better option to locate the scientific production of Spanish dermatologists in international literature than the classification used by JCR.

    Se trata de comparar la utilidad de las clasificaciones del JCR (categoría Dermatology & Venereal Diseases» (D&VD e Index Medicus (IM (categoría «Dermatology»(D para localizar los documentos de dermatólogos españoles durante el periodo 1987-2000 registrados en la base de datos MedLine. De los 1517 documentos localizados en ambas bases, en 1130 (74,5% el primer firmante era un dermatólogo, en 122 (8% figuraba un dermatólogo en otras posiciones y en 265 (17,5% no aparecía ninguno. Las revistas incluidas en la categoría «D&VD» de JCR y no incluidas en el apartado «D» de IM recogieron la mayor proporción de los documentos sin dermat

  7. The Why and How of Nuclear Accident Dosimetry; Dosimetrie en cas d'Accident Nucleaire: Raison d'Etre et Modalites; 041e 0411 041e 0421 041d 041e 0412 0414 ; Dosimetria en Casos de Accidente Nuclear: Justificacion y Modalidades

    Energy Technology Data Exchange (ETDEWEB)

    Vallario, E. J.; Wasson, H. R. [United States Atomic Energy Commission, Washington, DC (United States)

    1965-06-15

    des accidents nucleaires risquent de se produire. Lors de la mise au point d'un tel programme, il convient d'etudier certains parametres fondamentaux, a savoir: a) une methode permettant de trier les membres du personnel victimes d'un accident nucleaire; b) un systeme fixe (dispositif primaire) capable de determiner, avec un degre d'exactitude convenu la dose de premier choc a son emplacement meme; c) la necessite de disposer d''appareils secondaires'; d) la necessite de munir le personnel d'un dispositif donnant des indications sur le spectre et le flux afin de faciliter l'extrapolation de la dose en permettant de passer du dispositif fixe a l'emplacement de la personne exposee. La cellule de detection neutronique du systeme devrait renseigner sur le flux et le spectre, de maniere a obtenir des indications qualitatives appropriees dans l'evaluation de la dose. Les degres d'exactitude devront etre fixes d'apres l'etat actuel des connaissances. D'autre part, la cellule de detection gamma devrait permettre de mesurer ce rayonnement dans les limites des intensites d'interet biologique, soit entre 10 et 10{sup 3}r. Pour qu'un systeme de dosimetrie en cas d'accident soit efficace, le nombre d'appareils doit etre suffisant et leur emplacement bien choisi ; il faut aussi pouvoir les recuperer facilement. Si ces conditions sont remplies, on doit obtenir des donnees satisfaisantes sur toute l'etendue du spectre de fission. (author) [Spanish] La finilidad de un programa eficaz de dosimetria es la evaluacion de la dosis de neutrones y rayos gamma resultante de un accidente nuclear. A este respecto, el autor examina las limitaciones que presenta el dosimetro de pelicula, y trata ademas de la experiencia adquirida con ocasion de determinados accidentes nucleares, experiencia que ha demostrado la necesidad de establecer un programa eficaz de dosimetria en las instalaciones en que no se excluya la posibilidad de que se produzcan accidentes de esta clase. Para establecer un programa

  8. High-Dose Ionizing Radiation Photographic Dosimetry; Mesure, par des Methodes Photogra Phiques, de Doses Elevees de Rayonnements Ionisants; 0424 041e 0422 041e 0413 0420 0414 ; Dosimetria Fotografica de Dosis Elevadas de Radiaciones Ionizantes

    Energy Technology Data Exchange (ETDEWEB)

    Trousil, J.; Bucina, I. [Institute for Research Production and Application of Radioisotopes Prague, Czechoslovakia (Czech Republic)

    1965-06-15

    ionizantes comprendidas entre 10 mr y 1000 r (para rayos gamma y rayos X de elevada energia). Con arreglo a este metodo, se utilizan dos peliculas con emulsiones diferentes, montadas en el mismo estuche. El metodo se caracteriza esencialmente por el hecho de que permite evaluar dosis comprendidas entre los limites indicados, sin necesidad de saber si se produjo una exposicion a dosis mas elevadas, con un margen de error inferior a {+-}25 en todo el intervalo (limite de seguridad 95%); ademas permite determinar con una precision satisfactoria la energia de las radiaciones a que la pelicula estuvo expuesta. Se examinan los aparatos, peliculas y tratamiento quimicos necesarios para esas mediciones. Se explica el principio de construccion de un densitometro que permite medir el ennegrecimiento de la pelicula con una precision constante en el intervalo comprendido entre D = 0 y D = 6. De este modo es posible aprovechar toda la zona de ennegrecimiento de la pelicula correspondiente a dicho intervalo. Como no se utiliza iotomultiplicador, los riesgos de iluminacion excesiva se reducen al minimo, por lo que el aparato resulta apropiado para mediciones corrientes. Ademas se indican los parametros que han de satisfacer las peliculas dosimetricas para poder detectar dosis elevadas, y se comparan las caracteristicas de las peliculas dosimetricas FOMA y ORWO en lo que respecta a la medicion de dosis elevadas. Con un progreso en la dosimetria de dosis elevadas, cabe mencionar el metodo de revelado retardado que se describe con detalle, con arreglo al cual se anaden al revelador compuestos del tipo nitrobenzimidazol y benzotriazol, en concentracion adecuada. En el caso de emulsiones lentas con elevado contenido de plata, esta tecnica permite medir exposiciones de dosis gamma (rayos X de elevada energia) de hasta 10{sup 3}r, o aun mayores, si no es menester una evaluacion precisa en un intervalo de hasta 100 r. Se describe el efecto retardador de los productos quimicos anadidos al revelador

  9. "Notae in cartulis" en la documentación madrileña del siglo XIII : contribución al estudio de la elaboración del documento privado en Castilla

    Directory of Open Access Journals (Sweden)

    María Teresa Carrasco Lazareno

    1997-01-01

    Full Text Available Edición y análisis diplomático de tres «notae in cartulis» o notas preparatorias del documento definitivo, redactadas en hojas sueltas de pergamino, pertenecientes a la colección del convento de Santo Domingo el Real de Madrid. Datadas en la segunda mitad del siglo xiii y escritas por «scriptores» profesionales, antecedentes inmediatos del «publicus notarius», resumen los aspectos esenciales de dos apeos y de una permuta. Estas «notae» tienen interés como antecedentes de las minutas y de los protocolos notariales y por ser escasos los testimonios originales conservados. Además, nos permiten constatar que la validez jurídica de la nota en la etapa prenotarial —aún no «scriptura matrix»— podía ser similar a la de la «scriptura originalis», pues en estos casos no debieron redactarse las correspondientes cartas, siendo la nota el único título acreditativo de la consecución del negocio jurídico.Edition and diplomatic analysis of tíiree «notae in cartulis» or preparatory notes of the final document, written on loóse sheet of parchment, from the documentary resources of the monastery of Saint Dominio the Royal in Madrid. Dated in the second part of the thirteenth century and written by professional «scriptores», inmediate precedent of the «publicus notarius», they sum up the most esential aspects of two fixing of boundaries and one barter. These «notae» are important considered as an antecedent of notes and notarial registers, being quite rare the original testimonies kept. Besides, the allow us to confirm that the «notae» juridical validity in the prenotarial phase —not yet «scriptura matrix»— could be similar to the «scriptura originalis», because in these cases the respective documents were not written, being the note the only evidential title of the juridical «negotium» obtaining.

  10. The Importance of Dosimetry to the Medical Management of Persons Accidentally Exposed to High Levels of Radiation; Le Role de la Dosimetrie Dans les Soins Medicaux a Donner aux Personnes Accidentellement Exposees a de Fortes Doses de Rayonnement; 0417 041d 0410 0427 0414 ; Importancia de la Dosimetria para el Tratamiento Medico de las Personas Accidentalmente Expuestas a Dosis Elevadas de Radiaciones

    Energy Technology Data Exchange (ETDEWEB)

    Andrews, G. A.; Lushbaugh, C. C. [Medical Division, Oak Ridge Institute of Nuclear Studies (United States); Auxier, J. A. [Health Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN (United States)

    1965-06-15

    Radiation accidents continue to occur sporadically and it appears that there is no hope of eliminating them entirely. The management of patients exposed to large doses of radiation is constantly improving because of increasing ability to prevent and treat infection and to control haemorrhage. The possible effectiveness of temporary bone marrow grafts offers promise of a further reduction in mortality. The use of this growing biological information is closely related to, and to a large extent dependent upon, improvements in physical dosimetry for radiation accidents. (author) [French] Des accidents provoques par les rayonnements continuent a se produire de temps a autre et il ne semble guere que l'on puisse esperer les eliminer entierement. Toutefois, le traitement des sujets exposes a de fortes doses de rayonnement ne cesse de s'ameliorer; on parvient, en effet, dans une mesure croissante a empecher et a traiter l*infection ainsi qu'a arreter l'hemorragie. Comme la greffe temporaire de la moelle des os semble devoir donner des resultats, on peut s*attendre a une nouvelle reduction du taux de mortalite. L'application de ces connaissances biologiques sans cesse accrues est fonction, dans une large mesure, des ameliorations apportees a la dosimetrie physique des accidents nucleaires. (author) [Spanish] De vez en cuando se siguen produciendo accidentes de irradiacion y las perspectivas de evitarlos por completo parecen ser bastante remotas. El tratamiento de las victimas expuestas a dosis elevadas de radiaciones mejora constantemente debido a la creciente posibilidad de prevenir y tratar las infecciones, y de controlar las hemorragias. Tambien es posible que la eficacia de ios injertos temporales de medula osea se traduzca en una disminucion de la mortalidad. El aprovechamiento de estos conocimientos biologicos cada vez mas amplios guarda una estrecha relacion con los perfeccionamientos en materia de dosimetria fisica en caso de accidentes de irradiacion. (author

  11. Determination on Mice and other Organisms of the RBE of High-Energy Protons and Electrons; Efficacite Biologique Relative sur la Souris et d'Autres Organismes des Protons et des Electrons De Haute Energie; Opredelenie obeh pri obluchenii myshej i drugikh organizmov protonami i ehlektronami vysokikh ehnergij; Determinacion de la Eficacia Biologica Relativa de los Protones y de los Electrones de Elevada Emergia en el Raton y en Otros Organismos

    Energy Technology Data Exchange (ETDEWEB)

    Bonet-Maury, P.; Baarli, J.; Kahn, T.; Dardenne, G.; Frilley, M.; Deysine, A. [Institut du Radium, Paris (France)

    1964-03-15

    The general effects of 157- and 592-MeV protons and 150- and 950-MeV electrons were observed on mice exposed to lethal doses of whole-body irradiation. The irradiated animals displayed the same general symptoms as those produced by X - or gamma-rays. The biological tests did not bring to light any particular phenomenon which can be considered as characteristic of these high-energy particles. As determined in four tests (LD{sub 50}, average expectation of life and diminution of thymus and testicles), the RBE is close to 1. This corresponds to the mean LET of the particles and, in the case of the protons, does not appear to be increased by the higher local LET of the spallation fragments. (author) [French] Les effets generaux des protons de 157 et 592 MeV et des electrons de 150 et 950 MeV oiit ete observes sur des souris irradiees in toto, a des doses letales. Les animaux irradies presentent les memes symptomes generaux que ceux produits par les rayonnements de reference X ou {gamma}. Aucun phenomene caracteristique de ces particules de haute energie n'a pu etre mis en evidence avec les tests biologiques choisis. Lfefficacite biologique relative determinee sur 4 tests (DL{sub 50}, survie moyenne, reduction du thymus et des testicules) est peu differente de 1; cette EBR correspond au TEL moyen des particules et, pour les protons, ne parait pas augmentee par le TEL local plus eleve des etoiles de spallation. (author) [Spanish] Se han observado los efectos generales de los protones de 157 y 592 MeV y de los electrones de 150 y 950 MeV sobre ratones expuestos in toto, a dosis letales de radiaciones. Los animales irradiados presentan los mismos sintomas generales que los producidos por los rayos X o los rayos gamma adoptados como radiaciones de referencia. Los ensayos biologicos llevados a cabo no han puesto de manifiesto ningun fenomeno caracteristico de la accion de estas particulas de elevada energia. La eficacia biologica relativa determinada en cuatro ensayo (DL

  12. Influencia del entorno económico y cultural en las aportaciones de los programas y documentos trasnacionales en favor de la integración laboral y social de las personas minusválidad

    Directory of Open Access Journals (Sweden)

    Ángel BARRUECO

    2009-11-01

    Full Text Available RESUMEN: En el presente estudio hacemos un seguimiento de las aportaciones del Programa de Acción Mundial para las personas con Discapacidad, aprobado por la Asamblea General de Naciones Unidas (1982, en relación con la integración laboral y social de la población minusválida. Especialmente nos hemos entretenido en el análisis de las influencias de este documento en el diseño y planificación de las actividades relacionadas con la formación profesional y el empleo en los países de nuestro entorno económico (Comunidad Europea. A la vez hemos tenido presente la perspectiva multicultural, ya que las personas minusválidas constituyen una minoría social trasnacional con sus propias singularidades. Constatamos también las dificultades que conlleva incorporar la "diversidad" a la educación intercultural.ABSTRACT: In this study we follow up the contributions of the World Action Program for the Handicapped passed by the United Nations General Assembly (1982, concerning the integration of the handicapped into the workforce and into society. We have taken a special interest in the analysis of the effects of this document on the designing and planning of activities related to vocational trainning and employment in the countries of our economic environment (European Community. At the same time we have kept in mind the multicultural perspective, since handicapped persons are a transnational social minority group with their own peculiarities. We also make note of the difficulties entailed in incorporating "diversity" into intercultural education.RÉSUMÉ: Dans cette étude nous faisons le suivi des contributions du Programme d'Action Mondiale pour les Personnes Handicapées, adopté par l'Assemblée Genérale des Nations Unies (1982, en ce qui concerne l'intégration au travail et l'intégration sociale de la population handicapée. Nous nous sommes spécialement intéressés a l'ánalyse des influences exercées par ce document dans l

  13. Tendências tecnológicas de polietilenos e polipropileno através da prospecção em documentos de patente nos Estados Unidos e Europa - 1990/1997 Technological trends for polyethylene and polypropylene through the study of patent documents in the United States and Europe - 1990/1997

    Directory of Open Access Journals (Sweden)

    Adelaide M. S. Antunes

    2000-03-01

    Full Text Available O presente artigo fornece uma avaliação estratégica da tecnologia de produção de polímeros à base de etileno, principalmente o polietileno, bem como dos polímeros a base de propileno, principalmente o polipropileno, mostrando a tendência em relação a novos produtos, mercados e de concorrentes, com base em informações extraídas de documentos de patentes publicados a partir de 1990. O termo documento de patente abrange pedidos de patente publicados ou patentes concedidas. Da análise dos documentos de patente recuperados nesta pesquisa resultou uma visualização das tendência tecnológicas na indústria de poliolefinas nos mercados europeu e norte-americano, identificando e quantificando quatro indicadores tecnológicos: catalisadores, características da molécula, tipo de produto e campo de aplicação. Uma conclusão importante diz respeito à concentração de tecnologia, onde se observa que 6% das empresas com atividade em patenteamento detêm cerca de 40% do total de documentos, sendo que somente as quatro maiores depositárias dominam mais de 20% do total. Nota-se uma tendência de as empresas em buscar a inovação nas etapas finais da cadeia produtiva, com uma grande concentração de patentes em produtos e melhoria de aplicação.This article offers a strategic assessment of the technology for the production of polymers based on ethylene and propylene (mainly polyethylene and polypropylene, demonstrating the trends related to new products, markets and competitors, based on information extracted from patent documents published since 1990. The term "patent document" covers published patent applications or granted patents. A vision of the technological trends in the polyolefin industry in Europe and North America has been elucidated based upon the analysis of the patent documents studied during this research, and four technological indicators were identified and quantified: catalysts, molecular attributes, product type and

  14. Documentos de Investigación. Facultades de Ciencia Política y Gobierno y de Relaciones Internacionales N° 48. Situación actual de las políticas públicas para la reconciliación y la construcción de paz en Colombia: una aproximación desde las entidades territoriales

    OpenAIRE

    Gómez-Rojas, Ana-Carolina; Abella, Juan David; Ávila, Heidy; Caicedo, Angie; Jiménez, Clara; Galán, Nataly; Montoya, Katherin; Morales, Lorena; Uyabán, Lina; Zamudio, Luis Felipe

    2016-01-01

    En este segundo documento de trabajo elaborado por el Semillero de Políticas Públicas se ha desarrollado un ejercicio de investigación formativa que tuvo dos propósitos fundamentales: a) entender el asunto de la reconciliación en Colombia como un fenómeno complejo que puede y debe ser abordado desde distintos frentes de política pública, y b) reconocer el esfuerzo que están haciendo algunos municipios en Colombia para lograr resultados concretos de reconciliación. En esta...

  15. Tratamiento quirúrgico e intervencionista de la insuficiencia valvular mitral: revisión del documento de consenso de los Grupos de Trabajo en Cirugía Cardiovascular y Valvulopatías de la Sociedad Europea de Cardiología

    OpenAIRE

    Rafael García Fuster

    2016-01-01

    En este documento de consenso de los Grupos de Trabajo en Cirugía Cardiovascular y Valvulopatías de la Sociedad Europea de Cardiología se realiza una puesta al día sobre el manejo más adecuado de los pacientes con insuficiencia valvular mitral. El manuscrito publicado en el mes de enero del 2016 en el European Heart Journal recoge los siguientes puntos: – una enumeración de los principales aspectos clave sobre la evidencia científica referente a este tema; – la importancia de un abordaj...

  16. Los valores postmodernos en la formación ciudadana de los alumnos del Nivel Medio a la luz de la interpretación de los documentos oficiales que se elaboran en el marco del Plan Decenal (1992-2002) para la Educación Dominicana

    OpenAIRE

    Firpo Z, Antonio Luciano

    2013-01-01

    El estudio de la influencia de los valores postmodernos en la educación cívica de los estudiantes de nivel medio de la República Dominicana, conlleva a la reflexión y la interpretación de los autores y textos posmodernos, los cuales abordan el fenómeno de la educación y la cultura; a la luz de la reflexión y comentarios de esos autores se desarrolla una interpretación hermenéutica de algunos documentos oficiales, los cuales resultan muy importantes para el estudio de la educ...

  17. Prontuário eletrônico do paciente: documento técnico de informação e comunicação do dominio da saúde Electronic patient record: technical document of information and communication of the health dominion

    Directory of Open Access Journals (Sweden)

    Virgínia Bentes Pinto

    2006-01-01

    Full Text Available O texto apresenta os resultados da pesquisa sobre o Prontuário Eletrônico da Paciente (PEP, contextualizando-o não apenas como documento procedimental, porém como documento de referência no processo de comunicação intra e entre a equipe de saúde e o paciente. Ele permite a seus criadores e usuários intervir para resolver problemas de ordem clínica, administrativa e de gestão em organizações de saúde permitindo a todos agir coerentemente sobre as decisões a serem tomadas em relação ao paciente ao qual ele se refere.The text presents the results of the research we are conducting on Electronic Patient Record (EPR, contextualizing not be considered only as procedural document, however as document of reference in the communication process intra and enters the team of health and the patient. It allows to its creators and users to intervene to solve problems of clinical, administrative and management in health organizations allowing to all to act coherently on the decisions to be taken in relation to the patient to which it mentions itself.

  18. Documentos inéditos para la restauración de los órganos históricos de la Catedral Metropolitana de Nuestra Señora de la Asunción, de México Tenochtitlán (1688-1736

    Directory of Open Access Journals (Sweden)

    Guzmán Bravo, José Antonio

    2007-12-01

    Full Text Available The numerous documents generated by the creation of the organs in the Cathedral of México, are loaded with useful information about the process of construction. This collection belongs to the personal archive of the historian Guillermo Tovar de Teresa. It contains the first request for an organ sent from Spain, the embarquement at Cádiz on the galeon´s fleet. The arrival of Tiburcio Sans, problems with the organ tunning, critics and appointment of don Tiburcio as official examiner for musical instruments in Puebla 1698. The complete transformation of the old organ to match exactly to the new one, and the inventory of Joseph Nassarre´s project in 1734-1736. Magazines commenting the inaugural event and appointment of a curatortunner for permament maintenance. Other documents of interest for harpsichordists, musicologists and art historians.

    Los documentos generados por la creación de los órganos de la catedral de México, son numerosos, cargados de información y sumamente útiles para asomarnos al proceso de su construcción. Esta colección pertenece al archivo personal del historiador, Guillermo Tovar de Teresa. El pedido a España, el embarque en los galeones de la flota, la llegada y recibimiento de Tiburcio Sans, las críticas al órgano, pleito y defensa, ganando el título de veedor y examinador de instrumentos musicales en Puebla en 1698. La completa reforma del maestro organero Joseph Nassarre, con la nómina descriptiva de su proyecto de 1734-1736. Las gacetas que comentan el estreno, y el nombramiento de un afinador -curador oficial- para el mantenimiento permanente y otros documentos de interés para clavecimbalistas, musicólogos e historiadores del arte.

  19. O sistema nacional de educação narrado no documento base das conferências nacionais de educação/Conae e a gestão da escola contemporânea - The national education system narrated in the base document of national conferences on education/Conae and manage

    Directory of Open Access Journals (Sweden)

    Ana Paula da Silva Pozzobon Castanho

    2015-10-01

    Full Text Available Resumo Esta pesquisa analisa quais orientações, para a gestão democrática, inclusão e diversidade, nos oferece o documento base da Conferência Nacional de Educação/Conae na melhoria da gestão da escola pública contemporânea. Também busca analisar como estes princípios orientadores aparecem no projeto pedagógico da Escola Municipal de Lagoa Vermelha - RS. Apresenta-se, aqui, particularidades acerca da gestão educacional democrática brasileira na atualidade em uma escola contemporânea apoiando-se no referencial teórico para apontar as tendências apresentadas pela educação que estão em vigor no país, bem como, suas relações com os princípios orientadores da presente pesquisa. Para tanto, a metodologia utilizada baseia-se na abordagem qualitativa de caráter documental, desenvolvida a partir da busca de informações em documentos que não receberam qualquer tratamento científico. Palavras-chave: gestão democrática, inclusão, diversidade, políticas públicas. THE NATIONAL EDUCATION SYSTEM NARRATED IN THE BASE DOCUMENT OF NATIONAL CONFERENCES ON EDUCATION / CONAE AND MANAGEMENT SCHOOL CONTEMPORARY BRAZILIAN Abstract This research examines which guidelines for the management of democracy, inclusion and diversity, provides us with the base document of the National Conference on Education/Conae Conae improved management of contemporary public schools. It also seeks to analyze how these guiding principles appear in the educational project of the Municipal School of Lagoa Vermelha - RS. It is presented here in particular about the democratic management of education in Brazil today in a contemporary school building on the theoretical point to the trends presented in education that are in force in the country, as well as its relations with the guiding principles of this research. For this purpose, the methodology is based on the qualitative approach of documentary character, developed from the information search in documents

  20. Interface entre história da matemática e ensino: uma atividade desenvolvida com base num documento do século XVI An interface between the history of mathematics and education: an activity based on a sixteenth-century document

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    Fumikazu Saito

    2013-01-01

    Full Text Available Este artigo propõe a construção de uma interface entre história e ensino de matemática a partir de um diálogo entre historiadores e educadores da matemática. Para tanto, consideramos aspectos epistemológicos e metodológicos ligados à história da matemática, pautada em tendências historiográficas atuais, juntamente com a metodologia baseada no movimento lógico-histórico. A interface contemplou o movimento do pensamento na formação dos conceitos e o contexto no qual tais conceitos foram desenvolvidos, de modo a conduzir à reflexão sobre o processo histórico da construção do conhecimento para a elaboração de atividade didática. Esta atividade teve por base um documento do século XVI dedicado à construção e uso de "instrumentos matemáticos", e sua elaboração levou em consideração uma intencionalidade e um plano de ação que viabilizaram o seu desenvolvimento. A organização do ensino articulou as conexões internas e externas trazidas pela análise do documento e a forma do pensamento do desenvolvimento do conceito.This paper proposes to devise an interface between history and mathematics education based on a dialogue between historians of mathematics and educators. Regarding this, we have considered epistemological and methodological aspects of the history of mathematics based on current trends in historiography along with the methodology based on the logic-historical approach. The interface sought to envisage the movement in thought in the context in which these very concepts were conceived and the context in which mathematical concepts were developed. This interface led us to reflect on the historical process of development of knowledge by which a didactic activity could be devised. This activity was based on a sixteenth century document devoted to the construction and use of "mathematical instruments". Activity elaboration took into account an intention and a plan of action through which its application was

  1. Document notion and the image file appropriation in the contemporary documentary essay A noção de documento e a apropriação de imagens de arquivo no documentário ensaístico contemporâneo

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    Consuelo da Luz Lins

    2011-07-01

    Full Text Available The existing image appropration – in different audiovisual productions – is intensified and diversified. This article briefly recaptures ideas and authors already developed before in order to attain more specifically to the discussion of a fundamental notion of document, that allows us to approach th gestures of some New History historians to the modus operandi of certain cinema essayists: Harun Farocki (Arbeiter verlassen die Fabrik, Susana de Sousa Dias (48 e Eryk Rocha (Rocha que voa.A apropriação de imagens já existentes em diferentes produções audiovisuais se intensifica e se diversifica. Esse artigo retoma brevemente idéias e autores já trabalhados anteriormente para se ater mais longamente à discussão de uma noção fundamental para pensarmos a retomada de imagens de arquivo: a noção de documento, que nos permite aproximar o gesto de alguns historiadores da nova história ao modus operandi de certos ensaístas do cinema: Harun Farocki (Operários ao sair da fábrica, Susana de Sousa Dias (48 e Eryk Rocha (Rocha que voa.

  2. Thermoluminescence in medical dosimetry; Termoluminiscencia en dosimetria medica

    Energy Technology Data Exchange (ETDEWEB)

    Rivera, T., E-mail: trivera@ipn.mx [IPN, Centro de Investigacion en Ciencia Aplicada y Tecnologia Avanzada, Av. Legaria 694, Col. Irrigacion, 11500 Mexico D. F. (Mexico)

    2011-10-15

    The dosimetry by thermoluminescence (Tl) is applied in the entire world for the dosimetry of ionizing radiations specially to personal and medical dosimetry. This dosimetry method has been very interesting for measures in vivo because the Tl dosimeters have the advantage of being very sensitive in a very small volume and they are also equivalent to tissue and they do not need additional accessories (for example, cable, electrometer, etc.) The main characteristics of the diverse Tl materials to be used in the radiation measures and practical applications are: the Tl curve, the share homogeneity, the signal stability after the irradiation, precision and exactitude, the response in function with the dose and the energy influence. In this work a brief summary of the advances of the radiations dosimetry is presented by means of the thermally stimulated luminescence and its application to the dosimetry in radiotherapy. (Author)

  3. The personal dosimetry in Mexico; La dosimetria personal en Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Salazar, M.A. [Proxtronics/ Asesoria Integral en Dosimetria Termoluminiscente S.A. de C.V., Canal de Miramontes 2030-14, Col. Educacion, 04400 Mexico D.F. (Mexico)]. e-mail: aidtsa@avantel.net

    2006-07-01

    The Personal Dosimetry in Mexico, has an approximately 30 year-old history; and it had been and it is at the moment, one of the more important resources with which the personnel that works with ionizing radiation sources counts for its protection. The Personal Dosimetry begins with the film dosimetry, technique that even continues being used at the present time by some users, and the main reason of its use is for economic reasons. At the moment this technique, it has been surpassed, by the Thermoluminescent dosimetry, which has taken a lot of peak, mainly by the technological development with which it is counted at the present time; what has given as a result that this technique becomes tip technology; that supported in the characteristic of the used materials, as the handling and processing of the information associated with the new PC, digitizer cards, software etc, what has allowed increases it potential. In this work the current necessities of the market are presented as well as an analysis of the future real necessities in Mexico, at national level, the companies that provide this service and that they spread to satisfy this necessity of the market, including the different used technologies are also mentioned. The application ranges, at the same time, of the advantages and disadvantages of the different systems of Personal Dosimetry in the market. The companies that at the moment provide the service of Personal Dosimetry, its use materials and equipment in indistinct form, for the monitoring of gamma radiation, beta particles, different qualities of x-ray radiation, and sometimes neutrons. The monitoring of the exposed personnel at the diverse sources of ionizing radiation mentioned is carried out in many occasions without having with the materials (detectors), neither the appropriate infrastructure and therefore without the quality control that guarantees a correct evaluation of the dose equivalent, as a result of the exposure to the ionizing radiations; it is for what is considered that this work is important since the main objective of the Personal Dosimetry is that of the protection of people, that is to say the one of avoiding risks in the health of the workers involved with the radiations. (Author)

  4. Dosimetry of industrial sources; Dosimetria de fuentes industriales

    Energy Technology Data Exchange (ETDEWEB)

    Vega C, H.R.; Rodriguez J, R.; Manzanares A, E.; Hernandez V, R.; Ramirez G, J. [Universidad Autonoma de Zacatecas, 98068 Zacatecas (Mexico); Rivera M, T. [CICATA-IPN, 11500 Mexico D.F. (Mexico)]. e-mail: fermineutron@yahoo.com

    2007-07-01

    The gamma rays are produced during the disintegration of the atomic nuclei, its high energy allows them to cross thick materials. The capacity to attenuate a photons beam allows to determine the density, in line, of industrial interest materials as the mining. By means of two active dosemeters and a TLDs group (passive dosimetry) the dose rates of two sources of Cs-137 used for determining in line the density of mining materials were determined. With the dosemeters the dose levels in diverse points inside the grave that it harbors the sources and by means of calculations the isodoses curves were determined. In the phase of calculations was supposed that both sources were punctual and the isodose curves were calculated for two situations: naked sources and in their Pb packings. The dosimetry was carried out around two sources of {sup 137}Cs. The measured values allowed to develop a calculation procedure to obtain the isodoses curves in the grave where the sources are installed. (Author)

  5. Relative dosimetry by Ebt-3; Dosimetria relativa por EBT3

    Energy Technology Data Exchange (ETDEWEB)

    De Leon A, M. A.; Rivera M, T. [IPN, Centro de Investigacion en Ciencia Aplicada y Tecnologia Avanzada, Av. Legaria 694, 11500 Mexico D. F. (Mexico); Hernandez O, J. O., E-mail: madla16@hotmail.com [Hospital General de Mexico, Dr. Balmis 148, Col. Doctores, 06726 Mexico D. F. (Mexico)

    2015-10-15

    In the present work relative dosimetry in two linear accelerator for radiation therapy was studied. Both Varian Oncology systems named Varian Clinac 2100-Cd and MLC Varian Clinac i X were used. Gaf Chromic Ebt-3 film was used. Measurements have been performed in a water equivalent phantom, using 6 MV and 18 MV photon beams on both Linacs. Both calibration and Electron irradiations were carried out with the ionization chamber placed at the isocenter, below a stack of solid water slabs, at the depth of dose maximum (D max), with a Source-to-Surface Distance (SSD) of 100 cm and a field size of 10 cm x 10 cm. Calibration and dosimetric measurements photons were carried out under IAEA-TRS 398 protocol. Results of relative dosimetry in the present work are discussed. (Author)

  6. Dosimetry of {beta} extensive sources; Dosimetria de fuentes {beta} extensas

    Energy Technology Data Exchange (ETDEWEB)

    Rojas C, E.L.; Lallena R, A.M. [Departamento de Fisica Moderna, Universidad de Granada, E-18071 Granada (Spain)

    2002-07-01

    In this work, we have been studied, making use of the Penelope Monte Carlo simulation code, the dosimetry of {beta} extensive sources in situations of spherical geometry including interfaces. These configurations are of interest in the treatment of the called cranealfaringyomes of some synovia leisure of knee and other problems of interest in medical physics. Therefore, its application can be extended toward problems of another areas with similar geometric situation and beta sources. (Author)

  7. Retrospective dosimetry in irradiated foods; Dosimetria retrospectiva en alimentos irradiados

    Energy Technology Data Exchange (ETDEWEB)

    Calderon, T [Universidad Autonoma de Madrid, Facultad de Ciencias, Dpto. Quimica Agricola, Geologia, Geoquimica, Cantoblanco, Madrid (Spain)

    1999-07-01

    The main objective of this communication is to show the potentiality of certain minerals which accompany the foods (grasses, spices and seasonings) as potential dosemeters and its possible application in the absorbed dose calculations by the same in its hygienic sanitary treatment. (Author)

  8. Dosimetry of High-Energy Protons by Measurement of Beryllium-7 Formed in the Tissues; Dosimetrie des Protons de Haute Energie par Mesure de Beryllium-7 Forme dans les Tissus; 041e 0422 041d 041e 0421 0414 ; Dosimetria Relativa Mediante Berillo-7 Despues de Irradiar con Protones de Altas Energias (600 Mev Y 3 Gev)

    Energy Technology Data Exchange (ETDEWEB)

    Legeay, G. [Service Biologique et Veterinaire des Armees, Detache au D.P.S. (France); Commissariat a l' Energie Atomique, Centre d' Etudes Nucleaires de Fontenay-aux-Roses (France); Court, L.; Prat, L [Service de Sante des Armees, Detaches au D.P.S. (France); Commissariat a l' Energie Atomique, Centre d' Etudes Nucleaires de Fontenay-aux-Roses (France); Jeanmaire, L.; Daburon, M. L. [Commissariat a l' Energie Atomique (France); Nucleaires de Fontenay-aux-Roses, Centre d' Etudes [France; De Kerviler, H.; Tardy-Joubert, P. [Service de Protection Contre les Radiations, Centre d' Etudes Nucleaires de Saclay (France)

    1965-06-15

    compara las actividades determinadas experimentalmente y las calculadas en funcion de la energia a partir de los valores de las secciones eficaces actualmente admitidos. Dado que la irradiacion accidental del ser humano en haces protonicos es siempre localizada, se han efectuado experimentos consistentes en la irradiacion de la cabeza de conejos Fauve de Bourgogne de unos 2 kg de peso. Se comprobo que la actividad inducida en la cabeza es, en relacion a la que se observa en el resto del cuerpo, del orden de 1,8 {+-} 5. A pesar de cierta difusion el {sup 7}Be se puede detectar durante los primeros dias que siguen a la irradiacion. Por tanto, queda demostrado que este tipo de dosimetria relativa permite formarse una idea concreta del orden de magnitud de la irradiacion recibida accidentalmente. (author) [Russian] V ramkah biologicheskih jeksperimentov, provedennyh na sinhrociklotrone issledovatel'skogo jadernogo centra CERN v Zheneve s primeneniem protonov v 600 Mjev, i na sinhrotrone ''Saturn'' v issledovatel'skom jadernom centre Sakle s pomoshh'ju gamma-spektrografii, issledovalas' navedennaja radioaktivnost' u zhivyh sushhestv. I esli bol'shinstvo navedennyh radioizotopov (gamma-izluchatelej) imejut ochen' korotkij period poluraspada, to berillij-7, poluchaemyj v rezul'tate reakcij rasshheplenija na atomah kisloroda, ugleroda i azota, v chastnosti, daet pik aktivnosti, kotoryj bystro otdeljaetsja ot vsego spektra pri urovne jenergij v 479 kjev. Period poluraspada berillija-7 ravnyj 54,5 dnja pozvoljaet registrirovat' ego v techenie dostatochno prodolzhitel'nogo vremeni. Issledovanie, provedennoe Uajcarom na krysah, kotorye byli oblucheny in toto dozami mezhdu 400 i 800 rad, s protonami v 600 Mjev, i dozami 200 i 1000 rad, s protonami v 3 Gjev, daet linejnuju harakteristiku aktivnosti berillija-7 v zavisimosti ot pogloshhennoj dozy na 1 g tkani. Jeksperimental'nye rezul'taty sravnivalis' s raschetnymi, proizvedennymi s uchetom zavisimosti ot jenergii i na baze sechenij

  9. Planned Procedures for Fast Determination of Radiation Levels and Personnel Dosimetry in Connection with Radiological Accidents; Methodes de Dosimetrie Rapide du Personnel en Cas d'Accident Radiologique; 041f 041b 0410 041d 0414 ; Servicio Organizado de Determinacion Rapida de los Niveles de Radiacion y de Dosimetria del Personal en Caso de Accidente Radiologico

    Energy Technology Data Exchange (ETDEWEB)

    Edvardsson, K. -A.; Wahlberg, T. [AB Atomenergi, Studsvik (Sweden)

    1965-06-15

    medios de comunicacion con el interior y con el exterior. En materia de dosimetria individual, interesa, a la vez obtener lo antes posible los datos preliminares aproximados de la intensidad de la exposicion interna y externa, asi como, dentro de un plazo prudencial, datos bastante exactos, de la exposicion a que ha estado expuesta cada persona. Diversos equipos de determinacion de dosis, conocidos con el nombre de patrullas de reconocimiento, recorren los diversos sectores del recinto de la instalacion a fin de efectuar una evaluacion general de los riesgos. Esas patrullas que entran en accion tan pronto como se recibe la alarma estan provistas de instrumentos portatiles y recorren en automovil una serie de itinerarios previamente determinados en el emplazamiento. Los ensayos practicos realizados han puesto de manifiesto que las informaciones reunidas por las diversas patrullas llegan a la oficina central transcurridos 10-15 min despues de darse la alarma, permitiendo obtener una vision clara de los niveles de radiacion dentro y fuera de los diversos edificios. Los aparatos portatiles incluyen dispositivos para muestreo rapido del aire que funcionan segun el principio del eyector de aire. Las dosis individuales de irradiacion externa se evaluan con ayuda de dosimetros de pelicula, por activacion de dosimetros de criticidad, asi como por analisis de la actividad del pelo y de la sangre. La contaminacion interna se determina mediante antropogammametria y analisis radiometrico de las excreta. Para delimitar los campos de radiacion creados por un accidente, existen diversos puntos fijos de control equipados con dosimetros de varios tipos, a cuya lectura se procede lo antes posible despues de producirse el supuesto accidente. (author) [Russian] Obshhestvo po atomnoj jenergii Shvecii imeet special'nuju avarijnuju organizaciju, kotoraja nachinaet funkcionirovat' kak tol'ko poluchen signal o tom, chto sozdalos' chrezvychajnoe polozhenie v svjazi s bol'shoj radiacionnoj opasnost

  10. APLICACIÓN DE UNA PROPUESTA TEÓRICA Y METODOLÓGICA PARA LA PRODUCCIÓN DE DOCUMENTOS EN EL MODELO POR COMPETENCIAS: UN ESTUDIO CUASIEXPERIMENTAL (IMPLEMENTATION OF THEORETICAL AND METHODOLOGICAL PROPOSAL TO PRODUCE DOCUMENTS BY THE COMPENTENCY MODEL-QUASI-EXPERIMENTAL RESEARCH

    Directory of Open Access Journals (Sweden)

    Araya Muñoz Ma. Isabel

    2011-04-01

    Full Text Available Resumen:Este artículo muestra los resultados de un estudio cuasiexperimental, definido como Diseño de Grupo Control sin Tratamiento. Se elaboró y se implementó una propuesta teórica y metodológica para el proceso de enseñanza y aprendizaje para la producción de documentos en las oficinas, en el enfoque por competencias, en un curso de las carreras Administración de Oficinas y Educación Comercial de la Escuela de Secretariado Profesional de la Universidad Nacional de Costa Rica, primer ciclo 2009. Tres grupos participaron: uno experimental con tratamiento y dos grupos control con la metodología tradicional. Los resultados del postest mostraron que el experimental superó el promedio de rendimiento en 6,5 puntos al grupo control 2 y en 1,13 puntos al grupo control 1, línea que se marca en la comparación del rendimiento por áreas cognoscitivas. Para complementar los resultados de los tests se exploraron también factores del proceso de enseñanza y de aprendizaje aplicado en cada grupo. Además, mediante técnicas cualitativas se identificó la incidencia en el rendimiento de las estrategias de aprendizaje, el interés de los estudiantes y las estudiantes, su experiencia laboral, la formación dual y la carrera así como el papel de la persona docente. Se concluye que el modelo de formación por competencias podría mejorar el rendimiento académico en la producción de documentos cuando un espacio pedagógico es abordado desde la integración de saberes a partir de actividades didácticas que fomenten el diálogo, la indagación, la aplicación teórica a la resolución de problemas, el aprendizaje experiencial en el aula y en entornos lo más relacionados con la futura práctica profesional.Abstract: This article shows the results of a quasi-experimental study defined as Control Group Design without Treatment. A theoretical and methodological proposal was carried out and implemented for the teaching and learning processes for

  11. "Jornal papel": documento e dispositivo pedagógico

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    Guaracira Gouvêa

    2014-04-01

    Full Text Available Os jornais estão presentes na escola em diversas situações didáticas, reforçando o papel da leitura e da escrita como definidoras de uma cultura escolar. É nisso que se fundamenta a escolha do jornal impresso como objeto de estudo. Nosso foco voltou-se para a relação texto verbal escrito e texto imagético constitutiva dessa mídia nas seções dedicadas à divulgação da ciência, buscando compreender as relações entre esses textos, na formação de estruturas que explicitam determinados modelos de ciência e possibilitam o desenvolvimento de práticas educativas. Os jornais escolhidos foram os de grande circulação nacional, referentes ao período de 2006 a 2011. As leituras indicaram que a estrutura expressa na relação texto verbal e imagético tem marcadores no sentido de controlar a polissemia, mas em outros marcadores exploram possibilidades de diferentes leituras, encaminhando uma concepção de ciência afirmativa ou de ciência indagativa.

  12. Documentos: democratizar el espectro radioeléctrico

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    Revista Chasqui

    2015-01-01

    Full Text Available Elseminario "Democratizar el espectro radioeléctrico" reunió, en Pozo de Rosas, Venezuela, del 11 al 15 de noviembre de 1996, a coordinadoras nacionales y representantes de medios comunitarios de Argentina, Brasil, Chile, Colombia, Ecuador, ElSalvador, Guatemala, México, Paraguay, Uruguay y Venezuela; a abogados provenientes de variospaíses de la región, y a directivos de lasdiez redes que integran el G-S: ALER, AMARe; CIESPAL, FELAFACS, FIp, PROA, RNTC, SCe; VIDEAZIMUfY WACC: con el auspicio de la Fundación Priedricb Eoert deAlemaniay el CECI de Canadá. Presentamos a continuación las conclusiones de este evento.

  13. DOCUMENTO: FORMAS DE EVALUACIÓN DEL APRENDIZAJE

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    Marcela Currea Galvis

    2004-08-01

    Full Text Available Las notas de seguimiento (usadas por casi todos los docentes y educadores se constituyen en lo que se conoce (en muchas instituciones cómo evaluaciones parciales y finales, y permiten utilizar diferentes tipos y esquemas para laevaluación del aprendizaje y del desarrollo de competencias, es decir, la articulacióny uso de saberes, las formas de razonar y proceder para comprender situaciones, solucionar problemas y hacer en contexto, lográndose con aquéllas notas establecer diferenciaciones significativas de los múltiples procesos y conductas pertenecientes alos campos cognoscitivo, afectivo y psicomotor de cada uno de los estudiantes.

  14. DOCUMENTO: FUNCIÓN Y PROFESIONALIDAD DEL TRABAJO SOCIAL

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    Cristina De Robertis

    2009-08-01

    Full Text Available Desde su surgimiento a fines del siglo XIX, la historia del Trabajo Social francés nos muestra períodos de creación y de transformación de la profesión. Durante las guerras del siglo XX los trabajadores sociales desplegaron capacidad de adaptación y de resistencia en esos períodos tan difíciles, sometidos a tensiones y decisiones éticas importantes. Después de Mayo del 68, el Trabajo Social fué criticado y analizado en términos de normalización y de control de la población, en su rol, según Althuser, de “aparato ideológico de Estado”. Pero el trabajo social asume también otras funciones, puesto que el costo del sufrimiento social es importante tanto en el plano económico que humano. Los trabajadores sociales invierten esfuerzo en mejorar las condiciones de vida de las personas y de los grupos y en luchar por mayor justicia social. El Trabajo Social enfrenta presiones contradictorias que debe asumir apoyándose en los valores éticos, en la deontología y en sus conocimientos teóricos y prácticos. Puede entonces articular las tres dimensiones del saber, saber hacer y saber ser (savoir, savoir faire, savoir être. La profesionalidad se construye en tensión constante entre las fuerzas internas y externas, entre los elementos de permanencia y los de cambio.

  15. La preservación de documentos especiales

    OpenAIRE

    Manini, Miriam Paula

    2016-01-01

    Este artículo es ante todo una "manual de primeros auxilios" para los profesionales interesados o que trabajan con colecciones compuestas de una amplia gama de especies documentales. La información es el resultado de la investigación bibliográfica y experiencia laboral con varias tipologías. Están discutidas especies documentales presentes en colecciones mucho antes del advenimiento de la tecnología digital. Específicamente cuestiones se abordan vinculados a los soportes materiales de informa...

  16. DOCUMENTO: LA PRACTICA PROFESIONAL EN EL PROGRAMA DE TRABAJO SOCIAL

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    Liliana Pérez Mendoza

    2001-08-01

    Full Text Available La Facultad de Ciencias Sociales y Educación a través del Departamento de Practicas y el programa de Trabajo Social de la misma proyectan la acción de los Trabajadores Sociales en formación en diferentes áreas temáticas a fin de propiciar en los diferentes contextos donde tiene lugar, un desarrollo social, humano y sostenible con la participación en diferentes comunidades de la ciudad y la región, de docentes y estudiantes, a través de’ estrategias de acción profesional como: diagnósticos participativos, programas / proyectos de integración comunitaria, de generación de ingresos, de Desarrollo a Organizacional, de fortalecimiento de vínculos familiares, de convivencia ciudadana y de Desarrollo Municipal.

  17. DOCUMENTO: SINCRONÍA EN EL ESPACIO TIEMPO

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    Sylvia Mejía

    2003-08-01

    Full Text Available La propuesta de Vídeo-Transformación y el Programa Orígenes son dos proyectos alternativos para el uso del medio audiovisual que se desarrollaron en forma paralela en distintas regiones geográficas colombianas. No obstante, estas dos iniciativas comparten varias características y principios en su concepción, entre las cuales se destaca la ruptura con la comunicación vertical y la búsqueda de nuevos lenguajes. El artículo analiza esta convergencia de “sincronía en el espacio tiempo”, en la que bajo el lema "la gente le habla a la gente", Orígenes da acceso a grupos de la población para la producción de televisión y la Video Transformación, utiliza diversas metodologías como herramienta para el empoderamiento personal y comunitario, ambas con el propósito de mejorar las condiciones de vida potenciando el desarrollo comunitario participativo y haciendo uso de los medios como poderosos instrumentos de cambio social.

  18. Images and Memories: photography as document and research source for the historical recovery of Colônia Esperança (1935-1963 Imagens e Memórias: a fotografia como documento e fonte de pesquisa para a recuperação histórica da Colônia Esperança (1935-1963

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    Larissa Ayumi Sato

    2011-08-01

    Full Text Available The use of photography as research source and historical document has been set as important instrument in the process of historical recovery of recent settlement places as Colônia Esperança, rural community located in the city of Arapongas, on the border of Apucarana. This study considers the rescue of this community’s ancient images and the search of details that can contextualize this pictures become important tools for the recovery of scenarios that nowadays are modified by the passage of the time. In the case of Colônia Esperança, that appeared as a redoubt of catholic Japanese people searching for more fertile lands and better life conditions, around a common ideology (keep their religious practices and the customs of their origin country, this kind of analysis become particularly relevant due to the history of this location is not properly systematized. The colony was founded in 1935, even before the city of Arapongas, that was started in 1937, product of colonization works made by Companhia de Terras Norte do Paraná. This sense, this research uses as methodological procedures the reading, the iconographic analysis and the iconological interpretation of photography’s elements, bibliographic and documentary research, in addition to the oral history – as technique – to salvage colonization and everyday life aspects in the initial decades (30’s to 60’s in the location. In the end of this project, it’s expected the obtained systematization about the history of Colônia Esperança, enriched with rare pictures that were in hand of the pioneer families, unpublished testimonials and documents, fundamental for this process, can contribute to evidence the role of the photography as historical document and research source. A utilização de fotografias como fonte de pesquisa e documento histórico tem se configurado como importante instrumento no processo de reconstituição da história de lugares de coloniza-ção recente, como a

  19. In Vivo and Air Dosimetry of Fission-Spectrum Neutrons; Dosimetrie In Vivo et dans l'Air du Spectre des Neutrons de Fission; Dozimetriya v vozdukhe i dozimetriya In Vivo nejtronov spektra deleniya; Dosimetria In Vivo y en el Aire de Neutrones de un Espectro de Fision

    Energy Technology Data Exchange (ETDEWEB)

    Mobley, T. S.; Engel, R. E.; Godden, W. R. [Kirtland Airforce Base, New Mexico (United States); Penikas, V. T. [AFIT, Wright-Patterson Air Force Base, Ohio, with Duty Station at University of Rochester, School of Medicine and Dentistry, Rochester, NY (United States)

    1964-03-15

    laterales a une distance mediane de 200 cm ou de 175 cm du centre de l ' assemblage critique. La dose de neutrons mesuree dans l ' air etait de 161 {+-} 5 ,5 rad a 200 cm et de 242 {+-} 16.6 rad a 175 cm. A ces distances, la dose gamma etait respectivement de 33 {+-} 2,4 et 42 {+-} 2,5 r. Les doses d'entree et de sortie ainsi que la dose a l ' insertion variaient selon l'elevation de temperature due aux bouffees de neutrons, la distance du reacteur, l 'orientation des feuilles par rapport au reacteur et l'epaisseur et la composition de tissus attenuants. (author) [Spanish] Con el proposito de evaluar la configuracion de la dosis profunda durante la exposicion a neutrones de un espectro de fisionalos autores han ideado un metodo de dosimetria neutronica in vivo que aplicaron a ovejas. Utilizaron para estos estudios un reactor pulsante analogo al GODIVA II del Laboratorio Cientifico de Los Alamos. Dicho conjunto funciona de forma de producir impulsos de 50 {mu}s de amplitud, medida a la mitad de la altura maxima, y un ascenso de temperatura del combustible de unos 100 Degree-Sign C. Ademas, prepararon 'apositos ' subcutaneos que contienen una lamina de oro recubierta de cadmio, una lamina de oro sin recubrir y tres dosimetros de varilla de vidrio, termoluminiscentes, en un recipiente de plomo al litio revestido de vidrio. Estos apositos se introdujeron en el tejido subcutaneo, a ambos lados del cuerpo, y sirvieron para medir el flujo integrado de neutrones termicos y la dosis gamma, a medida que la irradiacion neutronica se aplica 'lateralmente'. Los apositos abdominales se prepararon en forma semejante a los subcutaneos; constan de una esfera de boro que contiene laminas de umbral de fision (Pu, Np, U) recubiertas de cadmio, una pastilla de azufre y los mismos tres tipos de dosimetros que forman parte del aposito subcutaneo. El aposito dosimetrico se sujeto al pilar anterior del rumen del animal 18 h antes de someterlo a la exposicion. En la memoria se describe la tecnica de

  20. Nuclear Accident Dosimetry at Argonne National Laboratory; Dosimetrie dans les Cas d'Accidents Nucleaires au Laboratoire National d'Argonne; 0421 041b 0423 0416 0411 0410 0414 ; Dosimetria en Casos de Accidente Nuclear en el Laboratorio Nacional de Argonne

    Energy Technology Data Exchange (ETDEWEB)

    Anderson, L. L.; Duffy, T. L.; Sedlet, J.; O' Neil, D. P. [Argonne National Laboratory, Argonne, IL (United States)

    1965-06-15

    cellules au cuivre, a l'indium et aux composes du soufre. Les auteurs calculent la fluence totale des neutrons en utilisant le spectre corrige en conjonction avec une fonction de probabilite de capture et le resultat pour le sodium du sang. On peut alors obtenir une ou plusieurs specifications de la dose des neutrons, en appliquant la fonction de conversion appropriee aux renseignements obtenus sur le spectre. L'element de l'ensemble dosimetre primaire destine a mesurer les rayons gamma contient des baguettes fluorescentes et un dosimetre a thermoluminescence en plus du dosimetre chimique a deux phases. Le dosimetre gamma de l'ensemble secondaire est une.solution de polyacrylamide qui se degrade sous l'effet des rayons gamma. On calcule la dose absorbee a partir de la valeur mesuree du changement de viscosite de la solution. Le memoire signale les difficultes que presentent l'evaluation des resultats, le choix de l'emplacement et la stabilite pendant le stockage. Des methodes sont etablies pour le dosage du phosphore-32 dans les matieres biologiques, lequel vise a obtenir la dose de neutrons rapides, a analyser les matieres prelevees dans le milieu ambiant pour y doser les produits resultant de l'activation par les neutrons et a determiner le nombre total de fissions. Le controle administratif des operations de dosimetrie est facilite par un manuel qui enumere les emplacements des appareils, precise les methodes de manipulation et de comptage et donne les formules de calcul de la dose. (author) [Spanish] El informe resume las medidas cuya adopcion se preve actualmente en el Laboratorio Nacional de Argonne para evaluar las dosis recibidas a consecuencia de un accidente de criticidad. Discute principalmente dos tipos de dosimetro que se encuentran en el comercio e indica los resultados de calibraciones independientes que se ejecutaron en el citado laboratorio. La red primaria de dosimetria esta constituida por detectores de umbral perfeccionados en el Laboratorio Nacional de

  1. Study of phosphors determination in biological samples; Estudo da determinacao de fosforo em amostras biologicas

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Rosangela Magda de

    1994-12-31

    In this paper, phosphors determination by neutron activation analysis in milk and bone samples was studied employing both instrumental and radiochemical separation methods. The analysis with radiochemistry separation consisted of the simultaneous irradiation of the samples and standards during 30 minutes, dissolution of the samples, hold back carrier, addition precipitation of phosphorus with ammonium phosphomolibdate (A.M.P.) and phosphorus-32 by counting by using Geiger-Mueller detector. The instrumental analysis consisted of the simultaneous irradiation of the samples and standards during 30 minutes, transfer of the samples into a counting planchet and measurement of the beta radiation emitted by phosphorus-32, after a suitable decay period. After the phosphorus analysis methods were established they were applied to both commercial milk and animal bone samples, and data obtained in the instrumental and radiochemical separation methods for each sample, were compared between themselves. In this work, it became possible to obtain analysis methods for phosphorus that can be applied independently of the sample quantity available, and the phosphorus content in the samples or interference that can be present in them. (author). 51 refs., 7 figs., 4 tabs.

  2. DESNITRIFICACION BIOLOGICA USANDO SUSTRATOS SOLIDOS ORGANICOS NATURALES COMO DONANTE DE ELECTRONES Y FUENTE DE CARBONO

    OpenAIRE

    DEAGO DE LEON, EUCLIDES MANUEL

    2014-01-01

    Los estudios sobre el aprovechamiento de Sustratos Sólidos Orgánicos Naturales (SSON) como fuentes alternativas de carbono orgánico, son importantes para establecer la factibilidad de su aplicación en la desnitrificación del agua. Los estudios sobre la materia indican que es posible usar SSON; sin embargo, aspectos como la liberación del carbono orgánico no está claramente establecido. En este estudio se bordaron los siguientes aspectos (i) factores que controlan la liberación ...

  3. Vita biografica vs. Vita biologica. la questione dell’anthropos in Karl Löwith

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    Gambardella, Fabiana

    2012-12-01

    Full Text Available This work focuses on Karl Löwith’s anthropology. Despite the great number of anthropological studies carried out at the beginning of 20th Century and aimed at describing human nature by means of natural science (biology, ethology, zoology, Löwith elaborates an anthropology based on the concept of biographical life. Man is not a simple living being, he is also an unnatural being that produces himself through the relationship with the other within a shared world.

  4. USBF-system of biological wastewater treatment; Elsistema USBF en la depuracion biologica de aguas residuales

    Energy Technology Data Exchange (ETDEWEB)

    Ampudia Gutierrez, J.

    2003-07-01

    An advanced system of biological wastewater treatment, has been developed by the company Depuralia. This system brings up a technological innovation, which has been awarded with several international awards. The wastewater treatment, occurs in an activated sludge reactor of extended aeration with a very low mass loading, with a nitrification-denitrification process, and water separation-clarification by upflow sludge blanket-filtration. The arrangement of a compact biological reactor enables complex wastewater treatment. High efficiency of the separation through sludge filtration provides functionality of the equipment with high concentration of activated sludge, with less implementation surface and volume. The elements of the biological reactor are described, the advantages are enumerated, and the results obtained in several accomplishments are shown; in the industrial as well as in the urban water treatment plants. (Author) 9 refs.

  5. Triterpenos aislados de corteza de Bursera graveolens (Burseraceae y su actividad biologica

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    Jorge Robles

    Full Text Available Bursera graveolens (Burseraceae, known in Colombia as "sasafrás", is useful for its medicinal properties and is rich in secondary metabolites. In our research, we carried out antimicrobial tests of several fractions and ethanolic extracts from aerial parts against Bacillus subtilis and Staphylococcus aureus, that showed growth inhibitory activity when applied at 250 mg/mL for extracts and 150 mg/mL for fractions. We carried out an antiinflamatory assay also, that showed 71% of inhibition by extracts (81% of Indomethacin and 70% of inhibition by fractions (78% of Indomethacin. Phytochemical investigation of the bark of Bursera graveolens (Burseraceae yielded three tetracyclic triterpene acids that have oxygenation in C-3, carboxylic acid in C-21 and unsaturation in C-24 and have been identified as 3-oxotirucalla-8,24-dien-21-oic acid (b-elemonic acid, 3a-hydroxytirucalla-8,24-dien-21-oic acid (a-elemolic acid and 3a-hydroxytirucalla-7,24-dien-21-oic acid. The isolated compounds were identified using spectroscopic methods including one and two-dimensional Nuclear Magnetic Resonance (COSY, HMQC, HMBC, NOESY experiments and comparison with published data. This is the first report of the isolated compounds in Bursera graveolens and they have a very important chemotaxonomic significance within the Burseraceae family and related families from the order Rutales.

  6. Structure, reactivity, and biological properties of hidantoines; Estrutura, reatividade e propriedades biologicas de hidantoinas

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Silvania Maria de; Silva, Joao Bosco Paraiso da [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil). Dept. de Quimica Fundamental]. E-mail: paraiso@ufpe.br; Hernandes, Marcelo Zaldini [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil). Dept. de Ciencias Farmaceuticas; Lima, Maria do Carmo Alves de; Galdino, Suely Lins; Pitta, Ivan da Rocha [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil). Dept. de Antibioticos

    2008-07-01

    Hydantoin (imidazolidine-2,4-dione) is a 2,4-diketotetrahydroimidazole discovered by Baeyer in 1861. Thiohydantoins and derivatives were prepared, having chemical properties similar to the corresponding carbonyl compounds. Some biological activities (antimicrobial, anticonvulsant, schistosomicidal) are attributed to the chemical reactivity and consequent affinity of hydantoinic rings towards biomacromolecules. Therefore, knowledge about the chemistry of hydantoins has increased enormously. In this review, we present important aspects such as reactivity of hydantoins, acidity of hydantoins, spectroscopy and crystallographic properties, and biological activities of hydantoin and its derivatives. (author)

  7. Isolamento, caratterizzazione strutturale e valutazione dell'attività biologica di metaboliti secondari di origine vegetale

    OpenAIRE

    Incollingo, Filomena

    2011-01-01

    La tematica di ricerca di questo dottorato si inserisce nell’ambito della chimica delle sostanze naturali. In particolare l’attenzione si è soffermata alle piante officinali e alle piante impiegate nella medicina popolare e alla purificazione e all’isolamento dei metaboliti secondari presenti in maggiore quantità attraverso tecniche cromatografiche quali: cromatografia su colonna, cromatografia su strato sottile, HPLC (high pressure liquid chromatography), DCCC (cromatografia liquida in cont...

  8. SISTEMA DE APRENDIZAJE COLABORATIVO BASADO EN INFRAESTRUCTURA GRID (SACGRID): APLICACIONES EN CIENCIAS BIOLOGICAS Y BIOTECNOLOGIA

    OpenAIRE

    ROSENBLAT GUELFENBEIN, PABLO

    2013-01-01

    Xentinelas Xelulares es un video juego que transporta al jugador a la realidad del Sistema Inmune, de una forma innovadora y entretenida, develando cómo funciona este intrincado sistema de protección de nuestro organismo. Luego que el estudiante construye sus propias bacterias a partir componentes básicos, éstas invaden el cuerpo a través de una herida en el pie. de manera implacable, se replican geométricamente y de cada división surgen dos nuevas bacterias temiblemente iguales q...

  9. Gênero na educação básica: quem se importa? Uma análise de documentos de políticas públicas no Brasil Gender in basic education: who cares? An analysis of the public policy documents published in Brazil

    Directory of Open Access Journals (Sweden)

    Claudia Vianna

    2006-08-01

    Full Text Available Este artigo examina a inclusão da perspectiva de gênero na educação infantil e no ensino fundamental, no período de 1988 a 2002, com ênfase no Referencial Curricular Nacional para a Educação Infantil (RCNEI e nos Parâmetros Curriculares Nacionais para o ensino fundamental (PCN. Conclui que, embora esses documentos constituam importantes instrumentos de referência para a construção de políticas públicas de educação no Brasil, a partir da ótica de gênero, contribuindo com a formação e com a atuação de professoras e professores, essas políticas não são devidamente efetivadas pelo Estado. Não existem estudos sistematizados sobre a efetividade dessas proposições e sobre possíveis mudanças na prática pedagógica de educadoras(es. Desse modo, sua legitimidade fica prejudicada, assim como a proposição de uma política que pretende garantir condições igualitárias de qualidade para o sistema de ensino e para a formação docente, a partir de um currículo nacional.This paper explores the inclusion of a gender perspective in pre-school and basic education in Brazil during 1988-2002, with a special attention to the National Curriculum Referents for Pre-School Education and the National Curriculum Guidelines for Basic Education. It concludes that, although these documents provide important orientations to build public policies in education from a gender perspective and thus contribute to the formation and practice of female and male teachers, such policies are not duly implemented by the State. Since there are no systematic studies on the effectiveness of these policies and their possible impact on the pedagogical performance of teachers, both their legitimacy and stated objectives to ensure conditions of equal quality in the teaching system and in teacher training are weakened.

  10. A colecção fotográfica "Inventário da Azulejaria Portuguesa" de João Miguel Santos Simões (1960-1968: objecto artístico, documento e memória The Photography Collection "Inventário da Azulejaria Portuguesa", by João Miguel Santos Simões (1960-1968: artistic object, document and memory

    Directory of Open Access Journals (Sweden)

    Maria Alexandra Trindade Gago da Câmara

    2008-12-01

    Full Text Available O "Inventário da Azulejaria Portuguesa" é um conjunto de espécies fotográficas coladas em cartão. Composta por 5028 documentos fotográficos ( a p& b e a cores, esta colecção faz parte de um projecto mais abrangente e ambicioso proposto pelo estudioso da Azulejaria Portuguesa João Miguel Santos Simões (1907-1972 à Fundação Calouste Gulbenkian em Lisboa no ano de 1958, de que resultaram a criação da Brigada de Estudos da Azulejaria e o Corpus da Azulejaria Portuguesa que a Fundação Calouste Gulbenkian editou entre 1963 e 1970. Cobrindo um vastíssimo território geográfico continental e atlântico, este espólio fotográfico - desde 2005 digitalizado e disponível online a partir da pesquisa do catálogo da Biblioteca de Arte da FGC - reverte-se de um importante interesse como documento histórico no estudo e levantamento do Património em Azulejo ainda existente e parte desaparecido. O propósito deste texto é apresentar e validar a importância enquanto memória documental desta mesma colecção, no âmbito de uma estrutura de organização mais vasta, como foi o rastreio sistemático e a recolha de elementos informativos e actualizados no tempo sobre a azulejaria portuguesa."Inventário da Azulejaria Portuguesa" is a collection of photographs pasted onto cardboard. Comprising 5028 photographic documents (in colour and black and white, the collection is part of a broader, more ambitious project proposed by Portuguese tile researcher João Miguel Santos Simões (1807-1972 to the Calouste Gulbenkian Foundation in 1958, a project that resulted in the publication of Brigada de Estudos da Azulejaria and Corpus da Azulejaria Portuguesa by the Foundation between 1963 and 1970. Covering a vast continental and Atlantic geographic territory, these photographic spoils - digitalized in 2005 and available online through the catalogue of the CGF's Art Library - constitute an important historical document for the study and inventorying of

  11. Biologic fixation of nitrogen in irradiated rhizobium strips; Fixacao biologica do nitrogenio em estirpes de rizobianas irradiadas

    Energy Technology Data Exchange (ETDEWEB)

    Caribe, Rebeka Alves; Colaco, Waldeciro [Pernambuco Univ., Recife, PE (Brazil). Dept. de Energia Nuclear

    2002-07-01

    Native Rhizobium sp. and Bradyrhizobium sp. isolates from the root nodules of bean and cowpea were selected. Six isolates, and the SEMIA 4077 (R. leguminosarum bv. phaseolus) and SEMIA 6145 (Bradyrhizobium sp) strains used as references, were irradiated with ultraviolet light (R-uv) and gamma rays (R-{gamma}). The D{sub 37} values for the rhizobial strain SEMIA 4077 were 43 J.m{sup -2} (UV) and 32 Gy (R-{gamma}) and for the SEMIA 6145 were 45 J.m{sup -2} (UV) and 35 Gy (R-gamma). Through a greenhouse experiment the irradiated isolates were inoculated on bean (P. vulgaris L., cv. Princesa) and on cowpea [Vigna unguiculata, (L.) Walp, cv. IPA-206] seedlings, in an attempt to evaluate the sensitivity of the host plants, and possible effects on their nodulation. Differences in responses to nodulation due to the effect of irradiation were observed for the isolates tested. Significantly differences were observed only for nodules dry matter yield of the IPA-206 cultivar. Gamma irradiated treatment were statistically superior to treatments with ultraviolet light in relation. (author)

  12. Biological quality of the waters of the river Barbana; Calidad biologica de las aguas del rio Barbana

    Energy Technology Data Exchange (ETDEWEB)

    Garrido Gonzalez, J.; Membiela Iglesia, P.; Vidal Lopez, M. [Universidad de Vigo (Spain)

    1998-07-01

    The results of a water quality study supported with physicochemical data in the Barbana stream (Galicia, NW Iberian Penninsula) are shown. 39 taxons have been captured and determined to evaluate the macro invertebrate community as a water quality indicator through the use of the BMWP` biotic index. The results show the variations in values at the different seasons of the year in a polluted stream, an forward conclusions about the significance of seasonality in water quality studies. (Author) 8 refs.

  13. Biological treatment in clarificated purines pilot plant; Depuracion biologica en plant piloto del clarificado de los purines

    Energy Technology Data Exchange (ETDEWEB)

    Bosque Hernandez, J. L. del; Martin Sanchez, J. L. [Universidad de Salamanca (Spain)

    2004-07-01

    With the purpose of eliminating the environmental problem that suppose the residuals, denominated. Purines, it is necessary to treat them so that they can take advantage. for it, in the part I of the work, the treatment that facilitates the operation of separation of the solid in suspension of the raw purin that allows to decrease the matter organic present in the liquid phase, settled down as well as, the increase of the power fertilizer in the solid phase. The part II of this investigation have as purpose the treatment of the phase it liquidates obtained previously to adapt it for their use like water of industrial type and the solid phase as fertilizer. (Author) 5 refs.

  14. Biological treatment of waste waters of high salt content; Depuracion biologica de efluentes con alto contenido salino

    Energy Technology Data Exchange (ETDEWEB)

    Perez, A.I.; Goytia, M.; Muguruza, I.; Blanco, F. [GAIKER, Zamudio (Spain)

    1996-09-01

    The fish canning industry, a national industrial sector of economical significance, generates high volumes of wastewater containing a high organic load and salt concentration. In addition to other problems presented for the aerobic biological treatment of these effluents, the presence of a high chloride concentration produces an inhibitory effect on the growth of aerobic microorganisms. In this work the inhibitory effect of chloride has been analyzed by means of a biokinetic study carried out using the electrolytic respirometry techniques and tuna boiling water as wastewater. This kind of study is highly appropriated for the search of solutions to specific problems created during the treatment of different industrial sectors wastewater. (Author) 10 refs.

  15. PROCESOS FOTOSENSIBILIZADOS MEDIADOS POR PRODUCTOS DE GLICACION AVANZADA. EFECTOS SOBRE SISTEMAS DE IMPORTANCIA BIOLOGICA EN EL LENTE OCULAR.

    OpenAIRE

    FUENTEALBA PATIÑO, DENIS ALBERTO; FUENTEALBA PATIÑO, DENIS ALBERTO

    2009-01-01

    La reacción no enzimática de proteínas con azúcares (glicación o reacción de Maillard), lleva a la formación de una gran variedad de compuestos denominados productos de glicación avanzada (AGEs) y su acumulación en sistemas biológicos está relacionada con 194p.

  16. 5. Conference cycle. The radiations and the Biological Sciences; 5. Ciclo de conferencias. Las radiaciones y las Ciencias Biologicas

    Energy Technology Data Exchange (ETDEWEB)

    Balcazar G, M.; Chavez B, A

    1991-06-15

    Nuclear technologies and their development have influenced many aspects of modern life. Besides used for electricity production nuclear technologies are applied in many other fields, especially in biological sciences. In genetics and molecular biology they enable research resulting in increased food production and better food preservation. Usage in material sciences lead to new varieties of plastics or improved characteristics. Nuclear applications are used in pe troleum industries and in forecasting geothermic power. Radiobiology and radiotherapy enable diagnosis and therapy of several diseases, e.g. cancer. Nuclear technologies also contribute to preserve the environment. They offer methods to analyse as well as decrease the environmental impacts. The 5. conference cyle entitled 'The Radiations and the Biological Sciences' aims to inform students of biological sciences about new nuclear technologies applied in their field of interest.

  17. Preparation methods, reactivity and biological importance of 4-thiazolidinones; Metodos de obtencao, reatividade e importancia biologica de 4-tiazolidinonas

    Energy Technology Data Exchange (ETDEWEB)

    Liesen, Andre P.; Aquino, Thiago M. de; Goes, Alexandre J.S. [Universidade Federal de Pernambuco (UFPE)e, PE (Brazil). Dept. de Antibioticos]. E-mail: ajsg@ufpe.br; Lima, Jose G. de; Faria, Antonio R. de; Alves, Antonio J. [Universidade Federal de Pernambuco (UFPE)e, PE (Brazil). Dept. de Ciencias Farmaceuticas

    2008-07-01

    Molecules containing the 4-thiazolidinone ring are known to possess a wide range of biological properties including antimicrobial and antiinflammatory activities among others. These compounds can be synthesized by cyclization reactions involving alpha-haloacetic acid or alpha-mercaptoacetic acid and employed in several chemoselective reactions. Comprehensive reviews have been written on 4-thiazolidinones in 1961 by Brown and in 1980 by Singh et al. In the recent literature, some new synthesis methods for 4-thiazolidinone derivatives and several reactions have been reported. These advances warrant to review the chemical and biological properties of compounds with this important heterocycle employed in synthetic organic chemistry and medicinal chemistry (author)

  18. Thiosemicarbazones: preparation methods, synthetic applications and biological importance; Tiossemicarbazonas: metodos de obtencao, aplicacoes sinteticas e importancia biologica

    Energy Technology Data Exchange (ETDEWEB)

    Tenorio, Romulo P.; Goes, Alexandre J.S. [Universidade Federal de Pernambuco, Recife, PE (Brazil). Dept. de Antibioticos]. E-mail: ajsg@ufpe.br; Lima, Jose G. de; Faria, Antonio R. de; Alves, Antonio J.; Aquino, Thiago M. de [Universidade Federal de Pernambuco, Recife, PE (Brazil). Dept. de Ciencias Farmaceuticas

    2005-11-15

    Thiosemicarbazones are a class of compounds known by their chemical and biological properties, such as antitumor, antibacterial, antiviral and antiprotozoal activity. Their ability to form chelates with metals has great importance in their biological activities. Their synthesis is very simple, versatile and clean, usually giving high yields. They are largely employed as intermediates, in the synthesis of others compounds. This article is a survey of some of these characteristics showing their great importance to organic and medicinal chemistry. (author)

  19. Persistência biologica de ametryn, diuron e oxyfluorfen no solo Biological persistence of ametryn, diuron, and oxyfluorfen in soil

    Directory of Open Access Journals (Sweden)

    Luis Antonio Peñaherrera-Colina

    2005-10-01

    Full Text Available Realizou-se este trabalho com o objetivo de avaliar a persistência biológica de herbicidas de pré-emergência em condições de casa-de-vegetação utilizando a aveia (Avena sativa L. como planta teste. O experimento foi instalado na Estação Experimental Boliche, Província de Guayas, Equador entre outubro e dezembro de 2002. O delineamento experimental foi de blocos ao acaso com quatro repetições, em esquema fatorial (3 x 4 x 4 + 1, envolvendo aplicações de três herbicidas (ametryn a 2,0 kg ha-1, diuron a 3,2 kg ha-1 e oxyfluorfen a 0,48 kg ha-1 no solo, mais uma testemunha sem aplicação de herbicida. Após as aplicações este foi amostrado em quatro profundidades (0-5, 5-10, 10-15 e 15-20 cm, em quatro épocas distintas (10, 20, 30 e 40 dias após aplicação. As amostras foram coletadas do campo utilizando-se cilindros de PVC. Nessas amostras cultivou-se aveia para as avaliações de persistência biológica dos produtos. Não se observaram efeitos dos tratamentos na germinação da aveia até os 40 dias após a aplicação (daa. Maior sintoma visual de fitotoxicidade e menor acúmulo de matéria seca total (MST, matéria seca da parte aérea (MAS e matéria seca da raiz (MSR foram observadas em plantas de aveia cultivadas em amostras de solo tratadas com diuron coletadas na camada de 0-5 cm aos 10, 20, 30 e 40 dias. A aveia mostrou alta sensibilidade aos herbicidas testados e desses produtos o diuron foi o que apresentou a maior persistência e a menor mobilidade no solo.This investigation had the objective of evaluating the biological persistence of pre-emergence herbicides under greenhouse conditions. Oat plants were used as test organisms. The experiment was established at Boliche Experiment Station, Província Guayas, Ecuador from October to December/2002. The experimental design was a randomized block, in a 3 x 4 x 4 + 1 factorial scheme, involving three herbicides (ametryn at 2.0 kg ha-1, diuron at 3.2 kg ha-1, and oxyfluorfen at 0.48 kg ha-1, plus a control. After herbicide applications soils were sampled in four different depths (0-5, 5-10, 10-15, and 15-20 cm at four dates (10, 20, 30, and 40 days after herbicide applications. Soil layers were colleted from field using PVC pipes, which were planted with 10 oat seeds. The herbicides did not promote oat seeds emergence reduction. Diuron at the 0-5 cm layer showed the highest visual symptoms of phytotoxicity and the lowest production of dry matter (total, shoots, and roots per oat plants at all sampling dates (10, 20, 30, and, 40 days after herbicide applications. Oat plants showed good sensitivity to the herbicide residues. Diuron was more persistent in the soil when compared with ametryn and oxyfluorfen.

  20. Molecular biology applications to infectious diseases diagnostic; Aplicaciones de la Biologica Molecular al diagnostico de enfermedades infecciosas

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    This project goes directed to the applications of the techniques of molecular biology in hepatitis virus.A great advance of these techniques it allows its application to the diagnose molecular and it becomes indispensable to have these fundamental tools in the field of the Health Public for the detection precocious, pursuit of the treatment, the one predicts and the evolution of the patient hepatitis bearing virus technical.Use of molecular biology to increase the handling and the control of the patients with hepatitis B and C and to detect an adult numbers of positive cases by means of the training and integration of all the countries participating.Implement the technique of PCR to identify the virus of the hepatitis B and C,implement quantification methods and genotipification for these virus.

  1. 5. Conference cycle. The radiations and the Biological Sciences; 5. Ciclo de conferencias. Las radiaciones y las Ciencias Biologicas

    Energy Technology Data Exchange (ETDEWEB)

    Balcazar G, M; Chavez B, A

    1991-06-15

    Nuclear technologies and their development have influenced many aspects of modern life. Besides used for electricity production nuclear technologies are applied in many other fields, especially in biological sciences. In genetics and molecular biology they enable research resulting in increased food production and better food preservation. Usage in material sciences lead to new varieties of plastics or improved characteristics. Nuclear applications are used in pe troleum industries and in forecasting geothermic power. Radiobiology and radiotherapy enable diagnosis and therapy of several diseases, e.g. cancer. Nuclear technologies also contribute to preserve the environment. They offer methods to analyse as well as decrease the environmental impacts. The 5. conference cyle entitled 'The Radiations and the Biological Sciences' aims to inform students of biological sciences about new nuclear technologies applied in their field of interest.

  2. Una mirada al abismo : la imagen como documento y el documento como imagen en las series históricas de Pablo Márquez

    Directory of Open Access Journals (Sweden)

    Víctor Zarza

    2012-01-01

    Full Text Available Estudio sobre la estrategia documental del artista español Pablo Márquez (Madrid, 1957 en sus obras de carácter histórico, con la URSS y el III Reich como trasfondo. Consideraciones acerca de las modalidades y la caracterización desarrolladas dentro de su trabajo, a partir del análisis de algunas de sus series.Study about Spanish artist Pablo Márquez’s (Madrid, 1957 documental strategy in his historic works, with the Soviet Union and the III Reich as background. Considerations about the methods and kinds evolved in his work, analyzing some of his series.

  3. Preparation and dosimetry of radiotherapeutic particles for arthropaties; Preparacion y dosimetria de particulas radioterapeuticas para artropatias

    Energy Technology Data Exchange (ETDEWEB)

    Gonzalez Z, M A [Departamento de Medicina Nuclear, Instituto Nacional de Pediatria (Mexico); Ferro F, G [Departamento de Materiales Radiactivos, Instituto nacional de Investigaciones Nucleares, Salazar, Estado de Mexico C.P. 52045 (Mexico); Rivera M, T; Azorin N, J [Departamento de Fisica, UAM Iztapalapa, Mexico D.F. (Mexico)

    1999-07-01

    It was developed a new formulation of macro aggregates of Samarium 153 ({sup 153} Sm-MH) for the arthropaties treatment. The radio pharmaceutic was prepared by reaction of Samarium 153 chloride (SmCl{sub 3}) in aqueous environment with sodium boron hydride in NaOH 0.5 N. The microscopic analysis shown that the particles have an average size of 4% m (range 1-14 {mu} m). The velocity of sedimentation was 0.008 cm/min with high stability in vitro in human serum. The biological studies in healthy rabbits, shown that the complex is retained inside the articulation still eight days after of the administration of the radiopharmaceutical. Likewise, it is presented the data of absorbed dose in the different target organs, which was determined by thermoluminescent dosimetry (TLD) through the use of a REMCAL phantom (radiation equivalent manikin calibration). (Author)

  4. Implementation of an alanine dosimetry service; Puesta en marcha de un servicio de dosimetria de alanima

    Energy Technology Data Exchange (ETDEWEB)

    Gago Arias, A.; Nunez Pelaez, N.; Peteiro Vilaseco, E.; Gomez Rodriguez, F.; Gonzalez Castano, D. M.

    2011-07-01

    This work facing the implementation of an alanine dosimetry service, linked to the installation of Co{sub 6}0 Radio physics Laboratory (LP) and Paramagnetic Resonance Service of the University of Santiago de Compostela (USC).

  5. Update Dosimetry Service internal staff Tecnatom; Actualizacion del servicio de dosimetria personal interna de TECNATOM

    Energy Technology Data Exchange (ETDEWEB)

    Bravo, B.; Marchena, P.; Alonso, A.; Navarro, E.; Serrano, E.

    2010-07-01

    The beginning of decommissioning of nuclear facilities and other industrial national context conditions have been a very significant increase in the need for such services, which have been almost overwhelmed by the demand. To provide a solution to this situation, Tecnatom decided to run as a new internal dosimetry service indirect measures to complement its renowned capabilities of direct measures. To perform this task, Tecnatom has signed a collaboration agreement with the Laboratory of Radiochemistry of Geocisa, all with the objective of characterizing contamination by alpha emitters or beta different analytical techniques.

  6. State of the art of solid state dosimetry; Estado da arte em dosimetria do estado solido

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Susana O., E-mail: sosouza@ufs.br [Universidade Federal de Sergipe (UFS), Sao Cristovao, SE (Brazil); Yamamoto, Takayoshi [Radioisotope Research Center, Osaka University (Japan); D' Errico, Francesco, E-mail: francesco.derrico@yale.edu [Yale University, School of Medicine, CT (United States)

    2014-07-01

    Passive solid-state detectors still dominate the personal dosimetry field. This article provides state of the art in this field and summarizes the most recent works presented on TL, OSL and RPL during the 17th International Conference on Solid State Dosimetry held in Recife in September 2013. The Article contains in particular the techniques Thermoluminescence (TL), Optically Stimulated Luminescence (OSL), radio photoluminescence (RPL). Thermoluminescence has the biggest advantage of the wide availability of commercial materials for dosimetry, and the nature tissue-equivalent of several of these materials. The limitation of the TL dosimetry presents fading luminance signal and the need for high temperatures to obtain the signal. The Optically Stimulated Luminescence has the advantages of high sensitivity, the possibility of multiple reading, while its limit is the need to use response compensating filters in addition to the high cost of equipment and dosimeters still restricted very few options trading . The radio photoluminescence has a reading that is completely non-destructive, but their dosimeters present lack of tissue-equivalent and a high cost. Presents the details of the techniques and the advantages and limitations of each of these will be discussed.

  7. Design of a system for neutrons dosimetry; Diseno de un sistema para dosimetria de neutrones

    Energy Technology Data Exchange (ETDEWEB)

    Ceron, P.; Rivera, T. [IPN, Centro de Investigacion en Ciencia Aplicada y Tecnologia Avanzada, Legaria No. 694, Col. Irrigacion, 11500 Mexico D. F. (Mexico); Paredes G, L. [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico); Azorin, J. [Universidad Autonoma Metropolitana, Unidad Iztapalapa, San Rafael Atlixco 186, Col. Vicentina, 09340 Mexico D. F. (Mexico); Sanchez, A. [IPN, Escuela Superior de Fisica y Matematicas, Av. Instituto Politecnico Nacional s/n, Col. San Pedro Zacatenco, 07738 Mexico D. F. (Mexico); Vega C, H. R., E-mail: victceronr@hotmail.com [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas (Mexico)

    2014-08-15

    At the present time diverse systems of detection of neutrons exist, as proportional counters based on BF{sub 3}, He{sub 3} and spectrometers of Bonner spheres. However, the cost and the complexity of the implementation of these systems put them far from the reach for dosimetric purposes. For these reasons a system of neutrons detection composed by a medium paraffin moderator that forms a 4π (spheres) arrangement and of several couples of thermoluminescent dosimeters TLD 600/TLD 700. The response of the system presents a minor repeatability to 5% in several assays when being irradiated with a {sup 239}PuBe source and a deviation of 13.8% in the Tl readings of four different spheres. The calibration factor of the system with regard to the neutrons source which was of 56.2 p Sv/nc also was calculated. These detectors will be used as passive monitors of photoneutrons in a radiotherapy room with lineal accelerator of high energy. (Author)

  8. Dosimetry with slow films in Interventional Radiology; Dosimetria con peliculas lentas en Radiologia Intervencionista

    Energy Technology Data Exchange (ETDEWEB)

    Ten, J.I.; Guibelalde, E.; Fernandez, J.M.; Canevaro, L.; Ramirez, R.; Vano, E. [Grupo de Fisica Medica. Departamento de Radiologia. Facultad de Medicina. Universidad Complutense de Madrid. Martin Lagos s/n CP 28040, Madrid (Spain)

    1998-12-31

    In this work it is presented a method for evaluation of patients doses in Interventional Radiology (RI). The method proposed in this work allows the simultaneous valoration of the product dose-area (PDA), the dose in the patient skin (DES) and the distribution of the irradiated fields, all of they together with their corresponding dose levels. The latter sometimes can be essential since the possible damages in skin depend not only of the doses, but also the irradiated area. The method has been resulted adequate for to evaluate doses to patients in Interventional Radiology procedures. It was possible to apply it as a routine form seeing that its not interfering significantly in the normal development of the medical intervention. The fundamental advantages of this dosimetric method in relation with the unique PDA measure or with the utilization of TLD is that it provide information about the total irradiated area, distribution and length of fields, collimation and wedge used besides that allow to determine the most irradiated zone. The visualization of the irradiated regions and the length fields utilized suggest the possibility to optimize the realization protocols of the interventional procedure in the cases in which it is considered that the doses have been very elevated. (Author)

  9. Advances in electron dosimetry of irregular fields; Avances en dosimetria de electrones de campos irregulares

    Energy Technology Data Exchange (ETDEWEB)

    Mendez V, J. [Departamento de Radioterapia, Instituto de Enfermedades Neoplasicas, Avenida Angamos Este 2520, Lima 34 (Peru)

    1998-12-31

    In this work it is presented an advance in Electron dosimetry of irregular fields for beams emitted by linear accelerators. At present diverse methods exist which are coming to apply in the Radiotherapy centers. In this work it is proposed a method for irregular fields dosimetry. It will be allow to calculate the dose rate absorbed required for evaluating the time for the treatment of cancer patients. Utilizing the results obtained by the dosimetric system, it has been possible to prove the validity of the method describe for 12 MeV energy and for square field 7.5 x 7.5 cm{sup 2} with percentile error less than 1 % . (Author)

  10. Thermoluminescent dosimetry in computed tomography for pediatric patients; Dosimetria termoluminiscente en tomografia computada para pacientes pediatricos

    Energy Technology Data Exchange (ETDEWEB)

    Medrano S, A. C.; Medina A, O.; Hidalgo T, S.; Azorin N, J., E-mail: alicesar1993@hotmail.com [Universidad Autonoma Metropolitana, Unidad Iztapalapa, Av. San Rafael Atlixco 186, Col. Vicentina, 09340 Mexico D. F. (Mexico)

    2015-10-15

    Computed tomography (CT) in conjunction with interventional radiology, is considered as high-dose radiological procedure, so the optimization of the dose is necessary. Exposure to ionizing radiation in pediatric CT is of particular interest because the children are up to 10 times more sensitive to radiation than adults, the late somatic and genetic effects of radiation. The exposure and risk associated with ionizing radiation in CT is best characterized by the absorbed dose to each organ. Thermoluminescent dosimeters of LiF: Mg, Ti are best suited for this purpose due to its characteristics such as high sensitivity, small size and its equivalence with the tissue. The results of dose measurements -in vivo- to the three types of CT studies (skull, thorax and abdomen) are presented. These results indicate that lower doses were obtained in skull study, while the highest was one of abdomen. (Author)

  11. Dosimetry of ionizing radiations by Electron paramagnetic resonance; Dosimetria de radiaciones ionizantes por resonancia paramagnetica electronica

    Energy Technology Data Exchange (ETDEWEB)

    Azorin N, J [UAM-I, Av. San Rafael Atlixco 186, 09340 Mexico D.F. (Mexico)

    2005-07-01

    In this work, some historical and theoretical aspects about the Electron Paramagnetic Resonance (EPR), its characteristics, the resonance detection, the paramagnetic species, the radiation effects on inorganic and organic materials, the diagrams of the instrumentation for the EPR detection, the performance of an EPR spectrometer, the coherence among EPR and dosimetry and, practical applications as well as in the food science there are presented. (Author)

  12. Improvements in the Tl dosimetry for Radiotherapy; Mejoras en la dosimetria Tl para Radioterapia

    Energy Technology Data Exchange (ETDEWEB)

    Bustos, S.; Velez, G.; Rubio, M. [CEPROCOR. Arenales 230 Juniors Cordoba 5000 (Argentina)

    1998-12-31

    The thermoluminescent dosimetry (TLD) in vivo has been demonstrated to be one of the most reliable for the control of radiotherapeutic treatments, but the delay in the response is the main disadvantage in its applicability. In this work are presented important improvements and it is demonstrated that maintaining the accuracy and reliability of the technique, it is possible to accelerate the response times at a few hours. To realize this work is utilized a lecturer Harshaw 4000, dosemeters LiF-TLD-100 chips (3.1 x 3.1 x 0.89 mm{sup 3}) and rods (1 x 1 x 6 mm{sup 3}). With the implementation of a glow curve analysis program developed in CIEMAT, its obtained a Tl peaks separation in such manner rapid and accurate, by that the thermal treatment of dosemeters may be reduced at one unique annealing pre-irradiation for 1 hr at 400 Centigrade. It is realized a periodical and individual calibration of the TLD and a study of the factors which influencing the ratio Tl signal-dose as linearity, correction by energy, directional response and pride of Tl signal. the results of this study are introducing in a calculation list specially designed and which allows to obtain absorbed dose by TLD starting of the dates (dosimetric peaks area) which appear of the glow curves analysis. The dose is obtained with an accuracy less than 5 %. The dosemeters already irradiated (in vivo) are analysed and informed in only four hours, allowing a greater control of the treatment and a correction of the possible errors for the next session, still in bi fractional treatments. The method implemented results thus accurate, rapid and reliable. (Author)

  13. Thermoluminescent dosimetry in fluoroscopy of pediatric patients; Dosimetria termoluminiscente en fluoroscopia de pacientes pediatricos

    Energy Technology Data Exchange (ETDEWEB)

    Garcia V, E.; Azorin N, J. [Universidad Autonoma Metropolitana, Unidad Iztapalapa, Departamento de Fisica, San Rafael Atlixco 186, Col. Vicentina, 09340 Ciudad de Mexico (Mexico); Hidalgo T, S.; Dies S, P., E-mail: azorin@xanum.uam.mx [Hospital Infantil de Mexico Federico Gomez, Dr. Marquez 162, Col. Doctores, 06720 Ciudad de Mexico (Mexico)

    2016-10-15

    The use of thermoluminescent dosimeters in the area of medical physics and especially in radiology is of paramount importance to guarantee the quality of a particular study, which for this reason the need to verify by means of measurements of peripheral dose in studies of esophagogastroduodenal series by fluoroscopy using TLD of LiF:Mg, Ti. For this the necessary measurements were carried out directly in patients of the Children s Hospital of Mexico Federico Gomez. Previously characterized the dosimeters were used the graphs of the linear equation to obtain the absorbed dose of each dosimeter and was found that the values of the absorbed dose in each patient changes for various reasons like the anatomy, thickness of the tissues, age and exposure time during the study and was verify that none of the studies performed on patients exceeded dose levels that could affect healthy organs. (Author)

  14. Internal dosimetry in nuclear medicine procedures; Dosimetria interna por procedimientos en medicina nuclear

    Energy Technology Data Exchange (ETDEWEB)

    Carrera Magarino, F.; Salgado Garcia, C.; Ruiz Manzano, P.; Rivas Ballarin, M. A.; Jimenez Hefernan, A.; Sanchez Segovia, J.

    2011-07-01

    The Department of Radio Physics and Radiation Protection, University Hospital Lozano Blesa Zaragoza presented a calculus textbook to estimate patient doses in diagnostic nuclear medicine. In this paper present an updated version referred Book of calculation.

  15. Course on internal dosimetry in nuclear medicine; Curso de dosimetria interna en medicina nuclear

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    This documentation was distributed to the participants in the Course of Internal Dosimetry in Nuclear Medicine organised by the Nuclear Regulatory Authority (ARN) of Argentina and held in Buenos Aires, Argentina, August 9-13, 2004. The course was intended for people from IAEA Member States in the Latin American and Caribbean region, and for professionals and workers in medicine, related with the radiation protection. Spanish and English were the languages of the course. The following subjects were covered: radioprotection of the patient in nuclear medicine; injuries by ionizing radiations; MIRD methodology; radiation dose assessment in nuclear medicine; small scale and microdosimetry; bone and marrow dose modelling; medical internal dose calculations; SPECT and image reconstruction; principles of the gamma camera; scattering and attenuation correction in SPECT; tomography in nuclear medicine.

  16. Personnel thermoluminescent dosimetry of plane pilots; Dosimetria personal termoluminiscente de pilotos aviadores

    Energy Technology Data Exchange (ETDEWEB)

    Azorin V, J.C. [Universidad Nacional Autonoma de Mexico, Facultad de Ciencias, 04510 Mexico D.F. (Mexico); Rivera M, T. [Universidad Autonoma Metropolitana Iztapalapa, Departamento de Fisica, 09340 Mexico D.F. (Mexico); Azorin N, J. [Centro de Investigacion en Ciencia Aplicada y Tecnologia Avanzada, IPN, 11500 Mexico D.F. (Mexico)

    1999-07-01

    In this work are presented the results of the research realized in the pilots of commercial planes of the different flight equipment existing. The results obtained show that the pilots receive during their work, doses of ionizing radiation greater than the limit recommended by the International Commission of Radiological Protection. (Author)

  17. Retrospective dosimetry of nail by Electron Paramagnetic Resonance; Dosimetria retrospectiva de unha por Ressonancia Paramagnetica Eletronica

    Energy Technology Data Exchange (ETDEWEB)

    Giannoni, Ricardo A., E-mail: giannoni@ird.gov.br [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Rodrigues Junior, Orlando, E-mail: rodrijr@ipen.br [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

    2015-07-01

    The purpose of this study is to characterize samples of human nails, subjected to irradiation of high doses through Technical Electron Paramagnetic Resonance (EPR). The goal is to establish a dose/response relationship in order to assess dose levels absorbed by individuals exposed in radiation accidents situations, retrospectively. Samples of human nails were irradiated with gamma radiation, and received a dose of 20 Gy. EPR measurements performed on samples before irradiation identified EPR signals associated with defects caused by the mechanical action of the sample collection. After irradiation other species of free radicals, associated with the action of gamma radiation, have been identified.

  18. Thermoluminescent dosemeter in a X-ray diffractometer; Dosimetria termoluminiscente en un difractometro de rayos X

    Energy Technology Data Exchange (ETDEWEB)

    Mendoza A, D.; Gonzalez M, P.; Falcon B, T. [Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, Mexico D.F. (Mexico); Castano, V.M. [Instituto de Fisica, UNAM, Laboratorio Juriquilla, A.P. 1-1010, C.P. 76001, Queretaro (Mexico)

    1999-07-01

    In this work it was presented the results obtained of the dosimetry which was realized in a X-ray diffractometer for powders, trademark Siemens D5000, using the thermoluminescent signal generated by the X-rays in the commercial dosemeter TLD-100 of Harshaw, US. In according to the results obtained, the radiation quantity received by an analysed material in the diffractometer, will be proportional to exposure time and it can vary from unities until tenths of grays. These results are very outstanding when are analysed crystalline materials in a diffractometer, for knowing the present crystalline phases, mainly if these are highly sensitive to the ionizing radiation, as it is the case of the thermoluminescent materials. (Author)

  19. Answer to request on the ININ internal dosimetry; Respuesta a encuesta sobre dosimetria interna del ININ

    Energy Technology Data Exchange (ETDEWEB)

    Alfaro L, M.M. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

    1999-05-15

    In this report it is presented the reply to CNSNS asking for information about the methodology for the evaluation of the occupational dose due to internal contamination. The characteristics of the installation, type and dimensions of the shield room, construction materials, type of detecting, calibration geometries, type of used phantom, intervals of energy of the calibration, type of routine measurements, detection limit for Cs-137 and Co-60, code to carry out the analysis of the spectra, evaluation of the measurement data, whole body system type armchair with anthropomorphic phantom, whole body system of vertical scanning, distribution and location diagram of the internal dosimetry laboratory there are among the treated aspects. (Author.

  20. Dosimetry of a Cesium 137 source; Dosimetria de una fuente de Cesio 137

    Energy Technology Data Exchange (ETDEWEB)

    Torres R, J.G.; Manzanares A, E.; Vega C, H.R. [Unidades Academicas de Estudios Nucleares, Universidad de Zacatecas (Mexico)

    2005-07-01

    It was carried out a dosimetric study of a source of Cesium 137 used in investigations of Radiobiology. This radionuclide has a half life of 30.07 years and it emits photons of 661.657 keV with a probability of 85.2%. The source has been used in a series of experiments trending to observe the cellular response before the gamma rays, as well as for the calibration of equipment of radiological protection. For such reason it is important to determine the dosimetric properties. In this work it was determined the absorbed dose that this source takes when being placed in the center from a methylmethacrylate badge to three distances, 5, 10 and 15 cm. The dose was measured with thermoluminescent dosemeters and it was calculated by means of Monte Carlo method, also was derived an expression that allows to determine the dose starting from the information of the activity of the source and of the distance regarding the same one. (Author)

  1. Historia y documentos sobre la colonización alemana en Chile.

    OpenAIRE

    Carrasco , Eduardo; Gleisner , Christine; Winkler , Lisette; de Pablo , Elisabeth

    2007-01-01

    Fonds audiovisuel du programme ESCoM-AAR (Equipe Sémiotique Cognitive et nouveaux Médias - Archives Audiovisuelles de la Recherche; 2001 - 2016).; Eduardo CARRASCO, Spezialist der Geschichte sowie des Kulturmanagements (Universität von Los Andes in Santiago de Chile) und Christine GLEISNER haben an der pontifikal-katholischen Universität Chiles Geschichte studiert. In dieser Reportage sprechen Sie von Ihren Arbeiten für die Archive « Emilio Held Winkler » des Chilenisch-Deutschen Verbands in ...

  2. OS MEIOS DE COMUNICAÇÃO SOCIAL NO DOCUMENTO DE PUEBLA

    Directory of Open Access Journals (Sweden)

    Pedro Gilberto Gomes

    1979-01-01

    Full Text Available What does Puebla say about mass media (media of social communication? These media seem to be conditionned by the socio-cultural reality. They are too much controlled by the economic and political powers. They seem to violate the conscience of peoples, to destroy the true values of culture and create phantasy necessities. The pastoral has to use these media.

  3. Negociación y documentos preliminares en la contratación internacional

    Directory of Open Access Journals (Sweden)

    Jorge Oviedo Albán

    2012-06-01

    Full Text Available Con el fin de establecer la relevancia de los principios de la buena fe y de libertad de formas, la doctrina y la jurisprudencia han establecido ciertas pautas que deben tenerse en cuenta en el proceso de formación del contrato internacional, así, en estas páginas se fija el análisis de las negociaciones preliminares en los contratos internacionales, en particular el estudio de la Convención de las Naciones Unidas sobre los Contratos de Compraventa Internacional de Mercaderías, y los Principios de Unidroit sobre los Contratos Comerciales Internacionales, apelando no solo al análisis doctrinal de las disposiciones involucradas, sino también al de los casos relevantes fallados por tribunales estatales y arbitrales.

  4. Negociación y documentos preliminares en la contratación internacional

    Directory of Open Access Journals (Sweden)

    Jorge Oviedo Albán

    2012-06-01

    Full Text Available Con el fin de establecer la relevancia de los principios de la buena fe y de libertad de formas, la doctrina y la jurisprudencia han establecido ciertas pautas que deben tenerse en cuenta en el proceso de formación del contrato internacional, así, en estas páginas se fija el análisis de las negociaciones preliminares en los contratos internacionales, en particular el estudio de la Convención de las Naciones Unidas sobre los Contratos de Compraventa Internacional de Mercaderías, y los Principios de Unidroit sobre los Contratos Comerciales Internacionales, apelando no solo al análisis doctrinal de las disposiciones involucradas, sino también al de los casos relevantes fallados por tribunales estatales y arbitrales

  5. CARTOGRAFIA DE LA MOTIVACION EMPRESARIAL: UN ANALISIS DE CITAS CONJUNTAS A DOCUMENTOS

    OpenAIRE

    Pinillos, Maria Jose; Diaz, Carmen

    2010-01-01

    The main purpose of this study is to explore and map the intellectual structure of entrepreneurial motivation studies during 1990–2010 by analyzing 4842 cited references of 96 articles from journals in SSCI and SCI databases. In this article, co-citation analysis and social network analysis techniques are used to research intellectual structure of the entrepreneurship motivation literature. We are able to identify the important publications and the influential scholars as well as the...

  6. Bitcoin: Documentos electrónicos para el intercambio de bienes y servicios

    OpenAIRE

    García Alejo, Luis Antonio

    2016-01-01

    [ES] Al hablar de Bitcoin no se hace alusión simplemente a una única cosa, al bien digital como tal, sino que nos referimos también al protocolo de envío y recepción de mensajes, basado en Open Source, a la red P2P (Par- a- par) y las propias criptomonedas (Bitcoins). Su creador, bajo el seudónimo de Satoshi Nakamoto, pretendía crear un proyecto con un objetivo principal: que las transacciones económicas entre dos personas no necesiten de un organismo central o ningún tipo de intermediario. E...

  7. DOCUMENTO: ORGANIZACIÓN Y PARTICIPACIÓN DESDE LAS PERSPECTIVAS DE LOS PUEBLOS AFRODESCENDIENTES

    Directory of Open Access Journals (Sweden)

    Rubén Hernández Cassiani

    2002-08-01

    Full Text Available En la mente de muchos colombianos prevalece la idea que los afrodescendientes están desorganizados y dispersos, que carecen de capacidad alguna para reivindicar sus derechos como grupo étnico o colectividad marginada históricamente por el Estado colombiano. Contrario a estas creencias, los pueblos afrodescendientes tienen múltiples formas organizativas que hunden sus raíces en las primeras sociedades africanas de las que heredaron una incalculable riqueza cultural que, en el ámbito organizacional, se constituye en medio generador y catalizador de conciencia étnica que en su accionar práctico se orienta a recuperar y fortalecer su identidad, sus territorios ancestrales y su autonomía como grupo al tiempo integrado y diferenciado del resto de la sociedad colombiana.

  8. El documento electrónico en la Comunidad Andina de Naciones

    OpenAIRE

    Matos Jaqui, Ena G.

    2007-01-01

    Si definimos al comercio electrónico como: ¨Cualquier forma de transacción de negocios en la cual las partes interactúan electrónicamente, en vez de hacerse mediante intercambios o contacto físico directo¨, está claro que el mismo no es nada nuevo, pues en su evolución ha utilizado diversos instrumentos como soporte, desde el teléfono hasta el internet, pasando por el télex y el fax. Con el advenimiento del internet y su extraordinaria difusión vino a reducir de manera consi...

  9. Gerenciamento eletrônico de documentos na Universidade Federal de Santa Catarina

    Directory of Open Access Journals (Sweden)

    Eliana Maria dos Santos Bahia

    2010-04-01

    Full Text Available This study aimed to examine the factors of satisfaction with the system Neutron based on the perception of users. Neutron was implemented in the Electronic Document Management of the Universidade Federal de Santa Catarina. The analysis focuses on the factors impacting the operating system. The study was conducted in the following sectors: Division of Central Archives and Pro-Rectory of Human and Social Development at UFSC, which shows the profile of the community studied. The study features and contextualizes the early initiatives of GED in Brazil, as the laws governing this practice. Also, advantages and disadvantages are pointed, and applications and technologies used in the neutron system as well as its usability are specified.

  10. Directrices para estructurar un programa de gestión de documentos en las organicaciones

    OpenAIRE

    Zapata, Carlos Alberto

    2005-01-01

    The article treats five great subjects: the symptoms, the problems and the opportunities of the document management in the organizations; the evolution and the consolidation of the document management; the emergent tendencies in the handling of documents; the basic guidelines; the model of documentary management; the structure of a program of documentary management, as well as its implementation and development. It is worth while to emphasize the methodological Model that he proposes for the ...

  11. Serie Documentos Nº2 - Investigaciones en Antropología Urbana (U. Central de Chile

    Directory of Open Access Journals (Sweden)

    Verónica Tapia Barría

    2007-09-01

    Full Text Available Una de las características principales del desarrollo de la investigación antropológica urbana en Chile es justamente el hecho de constituirse como un espacio en construcción, que obedece más bien a un conjunto de esfuerzos independientes que a la formulación de programas de investigación formales. Dichos esfuerzos son mayormente protagonizados por investigadores jóvenes, que desde sus particulares ópticas y objetos de interés han ido perfilando el carácter de lo que podríamos denominar antropología urbana chilena.

  12. Documento: Conocimientos sobre VIH/SIDA de la población costarricense.

    OpenAIRE

    Vargas Ruíz, Rodrigo

    2005-01-01

    En el marco del desarrollo del Proyecto Integrado "La salud sexual y la salud reproductiva de la población estudiantil de la Universidad Nacional", que se lleva a cabo en el Instituto de Estudios Sociales en Población (IDESPO), se conjuntaron esfuerzos con el Programa de Prevención y Control del VIH/SIDA de la Caja Costarricense de Seguro Social y el Departamento de Educación Integral de la Sexualidad Humana (DEISH) del Ministerio de Educación Pública, para realizar la encuesta telefónica "Co...

  13. Estudio de la accesibilidad de los documentos científicos en soporte digital

    OpenAIRE

    Díaz, Marta; Barrios, Maite; Térmens, Miquel; Ponsa, Pere; Ribera, Mireia; Guasch Murillo, Daniel

    2008-01-01

    This paper analyses the problems of accessibility posed by scientific articles published in digital format, focusing on the ease of use of their content with respect to the form in which they are published (irrespective of the recovery system). The two most widely used formats for the publication of scientific articles in digital format, HTML and PDF, are analysed, examining reader performance in relation to the presence of contents lists or internal or linked tables. The study involved two g...

  14. El documento electrónico como título valor

    OpenAIRE

    Cuenca Narváez, Leonardo

    2012-01-01

    En vista de este panorama, es evidente que debido al gran avance tecnológico de los diferentes sistemas de comunicación y de información, somos ahora participes del crecimiento continuo en la celebración de contratos y convenios en general, pues se observa muy a menudo declaraciones de voluntad a través de las redes digitales de comunicación, generándose así problemas sobre la existencia, validez y eficacia de los negocios jurídicos celebrados bajo esta modalidad, llegando así a nueva etapa e...

  15. Documento Oficial - 1a Conferência Nacional sobre Transparência e Controle Social

    Directory of Open Access Journals (Sweden)

    Controladoria Geral da União

    2011-04-01

    Full Text Available How it all began ...In September 2009, the Comptroller General of the Union (GTU held1st National Seminar on Social Control. The event over500 participants, featured presentations by several experimentssuccess in the practice of social control. At the end of the event,participants handed in a petition to the Chief Minister CGU, requesting the convening of a national conference on transparency and social control.On December 8, 2010, the President signed the Decree of Convocation of the 1st National Conference on Transparency and Social Control in meeting the demand of society to governments, citizens, businesses and organizations civil society could think and establish jointly guidelines for the effective promotion of public transparency and social control.

  16. Enseñar y aprender a traducir un documento notarial

    OpenAIRE

    Elena, Pilar; Holl, Iris; Roiss, Silvia

    2013-01-01

    [ES]El grado de información que se obtiene de un texto de especialidad depende en gran medida de la cantidad y calidad de los conocimientos previos que el lector posee en cuanto a su estructura y contenido. La extracción de información, que se efectúa durante el proceso de lectura del texto, es un proceso activo realizado en varios niveles textuales y en el que interactúan el lector (traductor) y el texto. El resultado de este proceso de captación de información textual es la representación q...

  17. Análise diplomática da autenticidade de documentos de arquivo pessoal

    Directory of Open Access Journals (Sweden)

    Isaac Newton Cesarino da Nóbrega Alves

    2016-11-01

    Full Text Available Analyzes in the context of Diplomatics the authenticity of documents belonging to a personal archive, in order to deepen the theoretical knowledge directing them to practical activity. This is a descriptive research in that it describes in the Diplomatics’ perspective the analysis results of the authenticity of documents of a personal archive. Regarding the approach, it is a qualitative one, and it used the observation technique. It was concluded from the analysis developed, that the difficulties inherent to the elements that give authenticity to printed documents are also inherent to digital documents, even in a different configuration. Finally, it is suggested to conduct new studies on the selected theme, given its importance and social relevance, especially with regard to legal aspects of the documentary framework.

  18. Educacion: Documento de Politica Sectorial. Tercera Edicion. (Education: Sector Policy Paper. Third Edition.)

    Science.gov (United States)

    Haddad, Wadi D.; And Others

    The present paper updates the World Bank's interpretations of education development and outlines a policy framework for lending for education. After chapters on the relationship between education and development and on the state of education development, the paper devotes a chapter to each of five issues: the expansion and equalization of…

  19. DOCUMENTOS: FUTUROLOGÍA: ORIGEN, EVOLUCIÓN Y MÉTODOS

    Directory of Open Access Journals (Sweden)

    Juan Carlos Vergara Schmalbach

    2010-08-01

    Full Text Available La futurología tiene más de sesenta años de haber sido concebida como el ideal de una ciencia encargada de prever lo que deparará el futuro. En ese periodo de tiempo, la futurología ha logrado captar la atención del mundo académico, en busca del método perfecto para realizar predicciones válidas sobre el futuro. Este artículo propone una revisión bibliográfica de autores prominentes e investigaciones relacionadas con los estudios sobre el futuro, a partir del origen, conceptos y teorías que giran alrededor del término “futurología”; además pretende proveer al lector de información sobre sus distintos métodos o herramientas. Se concluye con un vistazo de las diferentes metodologías para la planeación por escenarios, método comúnmente utilizado por futurólogos o futuristas.

  20. La musicologia afro-americana e il documento sonoro. Aspetti fondativi e disciplinari

    Directory of Open Access Journals (Sweden)

    Luca Cerchiari

    2009-09-01

    Full Text Available Afro-American musicology and the sound document. Disciplinary and foundation aspects After an introduction about the production of sound documents, both written and recorded, within Afro-American music, the author considers the importance of the subject of jazz documentation in terms of sound and the basic contribution to discography within these repertoires. The contribution given by the sound document to Afro-American musicology and its didactics, in addition to the transmission of contents, has a primary importance: transcriptions of solos and improvisations, analyses and comparisons, these are the basis of studies done directly on sound documents. Mentioned are also other types of documents, such as pianola rolls and mechanical instruments. The contribution to ancillary information connected to sound documents is considered (record envelopes, containers, illustrated booklets, cover notes as well as the importance of the whole production process to the creation of collections and sound archives, both public and private ones, based on that repertoire, giving birth also to restoration and retrieval activities.

  1. Un documento inédito sobre el pintor Valdés Leal

    Directory of Open Access Journals (Sweden)

    de la Villa Nogales, Fernando

    2001-09-01

    Full Text Available Juan de Valdés Leal es sin duda uno de los pintores más afamados de la escuela sevillana del Siglo de Oro. Nacido en Sevilla en 1622 se trasladó pronto a la ciudad de Córdoba donde al parecer se formó como artista entre fines de la década de los treinta y principios de los cuarenta. Desconocemos quien fue exactamente su maestro aunque al menos sí que se notan en sus cuadros influjos de varios pintores cordobeses y sevillanos como Antonio del Castillo, Juan de Uceda, Francisco Várela, Francisco de Herrera «el Viejo» y Francisco de Herrera «el joven ». Pese a la enorme revalorización que ha experimentado a lo largo de esta centuria la obra de este pintor, especialmente desde la aparición de los pioneros trabajos de don José Gestoso y de don Celestino López Martínez todavía hoy es posible encontrar manuscritos que contribuyan al conocimiento de su vida y de su obra.…

  2. DOCUMENTO: CUALIFICACIÓN Y FORMACIÓN DE MAESTROS: UNA EXPERIENCIA PROYECTIVA

    Directory of Open Access Journals (Sweden)

    Isabel Pérez Chaín

    2001-08-01

    Full Text Available En 1995, la Facultad de Ciencias Sociales y Educación de la Universidad de Cartagena, diseñó el proyecto de Cualificación y Formación del Maestro en el Distrito de Cartagena: "Formación y Construcción de los Proyectos Educativos Institucionales", con miras a contribuir al mejoramiento de la calidad educativa de la educación básica del Distrito de Cartagena, a la luz de la ley general de educación, las demandas del contexto en formación de maestros en medio de la crisis generalizada en que vivimos y cree, como nuestro Nobel de Literatura, Gabriel García Márquez: "Que las condiciones están dadas como nunca para el cambio social y que la educación será su órgano maestro. Una educación desde la cuna hasta la tumba inconforme y reflexiva, que nos inspire un nuevo modo de pensar y nos incite a descubrir quiénes somos en una sociedad que se quiera más a sí misma. Que aproveche al máximo nuestra creatividad inagotable y conciba una ética y tal vez una estética para nuestro afán desaforado y legítimo de superación personal. Que integre la ciencia y las artes a la canasta familiar, de acuerdo a los designios de un gran poeta de nuestro tiempo que pidió no seguir amándoles por separadas como a dos hermanas enemigas. Que canalice hacia la vida, la inmensa energía creativa, que durante siglos hemos despilfarrado en la depredación y la violencia y nos abra al fin la segunda oportunidad sobre la tierra que no tuvo la estirpe desgraciada del Coronel Aureliano Buendía; por el país próspero y justo que soñamos: Al alcance de los niños".

  3. HACÍA LA INDIZACIÓN AUTOMÁTICA DE DOCUMENTOS AUDIOVISUALES TELEVISIVOS

    Directory of Open Access Journals (Sweden)

    Jorge Caldera-Serrano

    2013-06-01

    Full Text Available Se especifican y analizan las principales herramientas con las que se cuenta en la actualidad para llevar a cabo indización automática de información audiovisual especialmente válido para las cadenas de televisión. Para ello, se describe la viabilidad de la indización textual sobre la descripción de imagen en movimiento realizada desde los servicios de documentación, así como se muestra la potencialidad que plantean el reconocimiento de voz y el reconocimiento de imagen en el ámbito de la indización automática.

  4. El futuro que queremos. Documento final de la Conferencia de las Naciones Unidas sobre Desarrollo Sostenible.

    OpenAIRE

    sobre Desarrollo Sostenible, Conferencia de las Naciones Unidas

    2012-01-01

    Presenta la declaración final de la Conferencia de las Naciones Unidas sobre Desarrollo Sostenible realizada en el año 2012 en Brasil con las principales líneas de acción en cuanto al impacto del crecimiento económico en el medio ambiente.

  5. Tres documentos inéditos para la historia de la guerra de reconquista inca

    Directory of Open Access Journals (Sweden)

    1984-01-01

    Full Text Available Dans cet article sont publiées les déclarations de trois témoins oculaires des événements de 1533 à 1558, c'est-à-dire depuis l'entrée de Manko Inka Yupanki à Cusco, avec ses alliés espagnols, jusqu'à la 'sortie' de l'auki Sayri Thupa, -un de ses enfants- en 1558, sur la pression militaire et diplomatique du Marquis de Cañete. Ces témoignages directs, confrontés avec d'autres contemporains, constituent de nouveaux éléments inédits pour éclairer la version donnée par les sources espagnoles de cette époque ils font connaître également, et presque en détail, les négociations du vice-roi Marquis de Cañete, lequel se proposait d'en finir pacifiquement avec la résistance héroïque de Vilcabamba, ainsi que la prudence Inca pour déjouer ce plan et éviter les dangers d'une guerre contre ce dernier réduit du Tawantinsuyo. Il ressort de ces témoignages, comparés avec d'autres fiables que nous avons consultés, la mise en question de la vérité sur la succession de Sayri Thupa à la mort de son père, Manko Inka, et la possibilité que le jeune auki ait simulé cette fonction par le truchement d'un artifice politique de la Cour de Vilcabamba. Se publican en este artículo las declaraciones de tres testigos presenciales de los sucesos de 1533 a 1558, es decir desde la entrada de Manko Inka Yupanki al Cusco, con sus aliados españoles, hasta la 'salida' del auki Sayri Thupa, -uno de sus hijos- en 1558, ante la presión militar y diplomática del Marqués de Cañete. Estos testimonios directos, confrontados con otros coetáneos, constituyen nuevos e inéditos elementos de juicio para aclarar la versión de las fuentes hispanas de estos años y para conocer casi en detalle las negociaciones del virrey Marqués de Cañete, que se proponía acabar pacíficamente con la resistencia heroica de Vilcabamba, y la cautela Inca para burlar este propósito y evitar los peligros de una guerra contra este último reducto del Tawantinsuyo. De estos testimonios compulsados con otros confiables que se citan, resulta cuestionada la verdad sobre la sucesión de Sayri Thupa a la muerte de su padre Manko Inka y la posibilidad que este auki simulara este cargo como un ardid político de la Corte de Vilcabamba.

  6. (DOCUMENTO POLÍTICA, CONCIENCIA Y FACULTAD: PATRIMONIO EPISTÉMICO Y LIBERTAD

    Directory of Open Access Journals (Sweden)

    Carlos Del Valle Rojas

    2008-01-01

    Full Text Available Si la educación es un hecho político, una facultad de educación y humanidades lo es profundamente, obstinadamente. En el mejor sentido, un hecho político en medio de una serie de convicciones que sustentan nuestro quehacer cotidiano.Si la educación y nuestra facultad, como comunidad social, política y cultural, es un espacio de reivindicación histórica, social y cultural, crítico y reflexivo –metacrítico, diría- o si es sólo un espacio de gerenciamiento de actividades curriculares, es un debate político fundamental...(Continúa

  7. DOCUMENTO: OBSERVATORIG PARA EL DESPLAZAMIENTO EN BOLÍVAR Y CARTAGENA

    Directory of Open Access Journals (Sweden)

    Ana Pombo Gallardo

    2001-08-01

    Full Text Available El fenómeno del desplazamiento forzoso en el Departamento de Bolívar, data desde 1 991 y se agudizado en los últimos 5 años, como resultado del recrudecimiento del conflicto armado en el territorio bolivarense. Este proceso ha derivado hacia la migración de 9.700 familias, es decir, un total de 56.263 personas‘, en el período de Enero de 1996 hasta Junio de 2000, de - acuerdo con cifras de ‘la Conferencia Episcopal Pastoral Social Movilidad Humana, entre otras la entidad que cuenta con un sistema de información RUT, coherente, continuo y oportuno, para efectos de analizar e interpretar el fenómeno del desplazamiento forzoso y sus innumerables consecuencias sobre la población afectada y la sociedad colombiana en general.

  8. Contabilidad Elemental e Intermedia. Prontuario. Documento de Trabajo (Elementary and Intermediate Accounting. Handbook. Working Document).

    Science.gov (United States)

    Puerto Rico State Dept. of Education, Hato Rey. Area for Vocational and Technical Education.

    This handbook for elementary and intermediate accounting is intended for teaching the basics of recording and calculating business transactions to students preparing to be accounting clerks. The guide begins with a description of the 2-semester course, a list of competencies to be developed, and the terminal objectives. The course outline for…

  9. Contabilidad Avanzada. Prontuario. Documento de Trabajo (Advanced Accounting. Handbook. Working Document).

    Science.gov (United States)

    Puerto Rico State Dept. of Education, Hato Rey. Area for Vocational and Technical Education.

    This advanced accounting handbook is intended for a 2-semester course for 11th-grade students preparing to be accounting clerks. The guide begins with a course description, a list of competencies to be developed, and terminal and enabling objectives. Two outlines based on recommended texts cover the following topics: review of the accounting…

  10. O campo lexical Economia em documentos do século XVIII

    Directory of Open Access Journals (Sweden)

    Vanessa Regina Duarte Xavier

    2010-01-01

    Full Text Available This text aims to analyze the lexical field Economy in documents of Goiás from 1751 to 1753, that were submitted to facsimile and semidiplomatic editions, in desideratum of to enable greater contact with the originals and the confrontation of their image to their conservative lesson. In addition, notes on the historical context alluded in the corpus seek clarify it and to explicit the semantic relationships that motivated the grouping of lexical items in fields.

  11. Los documentos notariales en el contexto de las fuentes para la historia empresarial

    Directory of Open Access Journals (Sweden)

    Elber Berdugo Cotera

    1996-02-01

    Full Text Available RESUMEN Este ensayo quiere llamar la atención de los investigadores e historiadores sobre la importancia d elas fuentes primarias en general y dentro de estas las notariales, en los trabajos de historia empresarial colombiana. El ensayo se divide en tres partes: en la primera, se da cuenta de los planteamientos de algunos historiadores que defienden el uso de las fuentes primarias en la investigación histórica. En la segunda, se hace una exposición exhaustiva sobre la utilización de las fuentes notariales en el país, plasmados en trabajos de grados, ensayos publicados en revistas especializadas y finalmente en libros de temas históricos.

  12. Documentos de consulta para iniciar la reforma educativa (Preparatory documents on educational reform).

    Science.gov (United States)

    Consejo Nacional Tecnico de la Educacion (Mexico).

    This document is an English-language abstract (approximately 1,500 words) of two booklets on Mexican educational reform. The first booklet cites the parts of the Mexican Constitution dealing with education, the legal foundation of Mexican education, stipulating that it shall be universal, democratic, national, compulsory, free and immune from…

  13. Un documento desconocido de Pedro Fermín de Vargas

    Directory of Open Access Journals (Sweden)

    Alberto Corradine Angulo

    1967-11-01

    Full Text Available Varios autores se han detenido a estudiar la vida singularísima de don Pedro Fermín de Vargas, quien bien podría llevar con sobrados méritos el título de Precursor; testimonio de este aserto son sus escritos y su vida misma, llenas de la profundidad de sus observaciones, que presentaba a las autoridades virreinales con gran sencillez y naturalidad, aún cuando pretendía ocultar el verdadero alcance de sus planteamientos

  14. The biological quality of Sieve downriver the Sabatta waster water plant; La qualita biologica del fiume Sieve a valle del depuratore di Rabatta

    Energy Technology Data Exchange (ETDEWEB)

    Banchetti, Rosalba; Gasperini, Federico; Bicocchi, Allegra; Cecchini, Agnese; Nolan, Brigitte; Stramaccia, Tania [Pisa Univ., Pisa (Italy). Dipartimento di etologia, ecologia ed evoluzione

    2005-10-15

    An evaluation study of the environmental condition of Sieve river, based on the Extended Biotic Index method (E.B.I.) applied to macro invertebrates was carried out in 2003. Three sampling locations were selected upriver and downriver a depuration plant and upriver of the confluence of a tributary that flow into the Sieve, the Ensa. The monitoring, carried out in two separate campaigns, in winter and spring, revealed how efficient is the sludge-active plant in determining a good quality of the water. Moreover Bilancino reservoir, with constant discharges, keeps Sieve river flow with a constant regime all through the year, avoiding the summer dry-up of the river and allowing the settlement of a biodiversified macrobenthonic community. [Italian] Nal 2003 e stato condotto uno studio di valutazione dello stato ecologico del fiume Sieve sulla base della comunita di macroinvertebrati, usando il metodo dell'I.B.E. (Indice Biotico Esteso). Sono stati scelti tre punti di campionamento a monte e a valle dello scarico di un impianto di depurazione, in funzione dal 1998, che tratta reflui di origine civile. Il monitoraggio eseguito ha rivelato l'utilita dell'impianto a fanghi attivi nel determinare un netto miglioramento della qualita delle acque.

  15. Development of software for management of radioactive waste in biological research and clinical assistance; Desenvolvimento do software para gerenciamento de rejeitos radioativos em pesquisa biologica e assistencia clinica

    Energy Technology Data Exchange (ETDEWEB)

    Maciel, Bianca; Mattos, Maria Fernanda S.S.; Medeiros, Regina B. [Universidade Federal de Sao Paulo (UNIFESP/EPM), Sao Paulo, SP (Brazil). Dept. de Diagnostico por Imagem. Nucleo de Protecao Radiologica; Franca Junior, Jose Antonio de, E-mail: fernanda@cfhr.epm.b, E-mail: rbitelli@cfhr.epm.b, E-mail: jafjunior@unifesp.b [Universidade Federal de Sao Paulo (UNIFESP/EPM), Sao Paulo, SP (Brazil). Dept. de Tecnologia da Informacao. Div. de Sistema de Informacao

    2011-10-26

    This paper describes the development of software which facilitates the automation of this process by mean of the Safety Analysis Report generating a data base allowing the statistic analysis and elaboration of radioactive wastes inventory. The software was developed in PHP language and the information is stored in a data base generated in Oracle and organized in different tables which allows to calculate the storage time of waste and to register the specificities of radioisotopes, cadastral data of the professionals which handle that radioisotope and also the characteristics of handling laboratories. That tool collaborates for a effective control on the use of radioisotopes in research laboratories and assistance areas as well

  16. Etymology of transition metal biomolecules as a learning aid in Biological Chemistry; A etimologia de biomoleculas com metais de transicao como auxiliar na aprendizagem de Quimica Biologica

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Jose A.L. da, E-mail: pcd1950@ist.utl.pt [Universidade Tecnica de Lisboa (Portugal). Instituto Superior Tecnico. Centro de Quimico Estrutural

    2013-11-01

    Numerous functional biomolecules are associated with metals, i.e. the metallobiomolecules; more specifically, some are dependent on transition metals required for several crucial biological roles. Nevertheless, their names can lead to ambiguous interpretations concerning the properties and performances of this group of biological molecules. Their etymology may be useful by providing a more perceptive insight into their features. However, etymology can lead to incongruous conclusions, requiring an especially careful approach to prevent errors. Examples illustrating these subjects shall be examined (author)

  17. Potencial Insecticida de Extractos de MeliaAzederach L (Meliaceae. Actividad Biologica y Efectos sobre Spodoptera Frugiperda J.E: Smith

    Directory of Open Access Journals (Sweden)

    Vergara Ruiz Rodrigo

    1997-12-01

    Full Text Available En la búsqueda de alternativas de Spodoptera frugiperda J.E. Smith (Lepidoptera: Noctuidae, diferentes al uso de insecticidas se planifico esta investigación con el objetivo de precisas las propiedades insecticidas de extractos de Melia azederach L. para el control de larvas en estado L2. El trabajo se adelantó en Laboratorios de la Universidad del Tolima en Ibagué, ubicados en una zona de vida correspondiente al bosque húmedo Montano Bajo (bh-MB, las condiciones de temperatura fueron de 28 ±2°C y 70%de humedad relativa. Estos trabajos se realizaron durante 1994 y 1995. Los extractos se obtuvieron empleando tres solventes: alcohólico y etéreo trabajando con un diseño complemente al azar con arreglo factorial 3ˆ2, con 5 replicaciones. Antes de hacer las aplicaciones de los extractos se procedió a verificar su actividad biológica sobre Artemia salina. La dieta alimenticia natural y la cría masiva de Spodoptera frugiperda, se organizó de tal forma que se pudiera obtener material para toda la investigación. Después de efectuados los tratamientos se hicieron lecturas de mortalidad hasta los 6 días y porteriormente se continuaron realizando observaciones bioecológicas sobre los individuos sobrevivientes, hasta el estado adulto y etapa de oviposición El análisis de mortalidad demostró que los extractos tienen un efecto antialimentario sobre las larvas del insecto-plaga, siendo el extracto alcohólico en su dosis alta el mejor. Al efectuar el establecimiento de las dosis letales medidas se precisó que se pueden trabajar concentraciones entre 1.000-3.000 ppm para obtener óptimos resultados. El efecto antialimentario de los extractos produce en los individuos sobrevivientes una prolongación de la duración en días de las fases de su ciclo de vida.

  18. Assessment of environmental radiological findings in a service experimental biological irradiation; Evaluacion de los resultados radiologicos ambientales en un servicio de irradiacion biologica experimental

    Energy Technology Data Exchange (ETDEWEB)

    Macias Dominguez, M. T.; Barros, C.; Hernandez, D.; Pina Zapardiel, R.

    2013-07-01

    This paper presents the evaluation of the data dosimetric environmental obtained in the last 4 years in different areas of work related to the techniques of irradiation, with special attention to the levels of radiation to areas of free access, to ensure that the dose in these dependencies are lower than the doses to members of the public. (Author)

  19. VARIABILIDAD TEMPORAL DE LA SURGENCIA Y LA ZMO, Y SU EFECTO SOBRE LA PRODUCTIVIDAD BIOLOGICA EN UN SISTEMA COSTERO DEL NORTE DE LA CORRIENTE DE HUMBOLDT

    OpenAIRE

    GUIÑEZ ARAYA, MARCOS IGNACIO

    2012-01-01

    Mejillones del Sur (23ºS), es una bahía orientada hacia el norte y ubicada a orillas del desierto más seco del planeta (Atacama). Esta bahía es parte del centro de surgencia de Punta Angamos, localizado en la zona norte del sistema de corrientes de Humboldt. En la bahía de Mejillones se han registrado valores de producción primaria media de 3170 mg C m-2 d-1 y una abundante diversidad fitoplanctónica. En esta bahía se han realizado una serie de estudios sobre la composición y estructura de...

  20. Vegetation composition of the UCM Biological Field Station Finca de Ontalba; Composicion vegetal de la Estacion Biologica de la UCM Finca de Ontalba

    Energy Technology Data Exchange (ETDEWEB)

    Castoldi, E.; Molina, J. A.

    2012-07-01

    A vegetation study in the Biological Field Station of the Complutense University of Madrid named Finca de Ontalba, located in Guadarrama Mountains (North Madrid), was carried out. We identified 12 plant communities grouped in the following seven vegetation types: 1) Hygrophilous and aquatic communities; 2) Meadows; 3) Pioneer community of open disturbed soils; 4) Nitrophilous tall-herb vegetation of forest edge; 5) Forest-edge herbaceous community; 6) Forest-edge scrub community; and 7) Forest vegetation. The interest of the Station for research studies is pointed out. Its scope includes primary succession, amphibious environment, soil moisture gradient, ecotones, and forested environment. Besides, the Biological Station hosts a freshwater habitat type listed in the European Community Directive (92/43/EEC) which corresponds to water courses of plain or montane levels with Ranunculion fluitantis and Callitricho- Batrachion vegetation (habitat code 3260). (Author)

  1. Viabilidade da utilização de amostras biologicas obtidas de dentes humanos para obtenção de perfis geneticos de DNA

    OpenAIRE

    Leonardo Soriano de Mello Santos

    2009-01-01

    Resumo: Alguns fatores relacionados ao estado e lugares que dentes humanos se encontram, nos que diz respeito a estes enquanto amostras com finalidade forense, ainda constituem desafio ao que tange o uso dos mesmos como material para obtenção de perfis genéticos de DNA. Este estudo visou comparar a extração de DNA feita a partir de dentes humanos com a extração por meios de amostras de sangue fixadas em papel FTA® utilizadas como grupo controle, de maneira a comparar os alelos mapeados e defi...

  2. Biological eleimination of nitrogen and phosphorus: Field results and modelling aspects. Rimozione biologica di azoto e fosforo: Risultati su scala reale ed aspetti modellistici

    Energy Technology Data Exchange (ETDEWEB)

    Malpei, F.; Andreattola, G.; Canziani, R. (Politecnico di Milano, Milan (Italy))

    1992-07-01

    The processes described in this article can be easily adapted to existing biological activated sludge plants which eliminate nitrogen and provide for considerable savings with respect to traditional chemical precipitation methods, as well as the disposal of exhausted sludge. This article assesses this innovative combined nitrogen and the removal efficiencies of phosphorus removal method by analyzing the basic process schemes and real plant and simulated operating results.

  3. A computer program for monitoring the biological treatment of waste waters (CDBAR); Programa informatico para el control de la depuracion biologica de aguas residuales (CDBAR)

    Energy Technology Data Exchange (ETDEWEB)

    Bove Porta, J.; Milan Cabre, D.

    2001-07-01

    The problems, such as bulking, foaming, etc., involved in managing a waste water treatment plant (WWTP) employing an activated sludge biological process have a biochemical origin. Correcting them requires identifying the micro-organisms responsible for the pathology in question, whether the problems are due to there being too many or too few of these organisms. It is therefore necessary to have a good microscope and staff trained in identifying such micro-organisms. Never the less, to attain speed and efficiency, it is necessary to have more means. That is why the CDBAR project was carried out. This is a simple computer application that includes numerous photographs of microscopic organisms from samples taken in Spain and Portugal. Once the anomaly has been identified, the computer application it-self includes a program of corrective actions that will allow the biological reactor, the most important part of a WWTP, to function normally. Finally, a glossary has been prepared so that the meaning of any term can be looked up quickly and easily. (Author) 16 refs.

  4. Protease activated receptors (PARS) mediation in gyroxin biological activity; Mediacao dos receptores ativados por proteases (PARs) em atividades biologicas da giroxina

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Jose Alberto Alves da

    2009-07-01

    Gyroxin is a serine protease enzyme from the South American rattlesnake (Crotalus durissus terrificus) venom; it is only partially characterized and has multiple activities. Gyroxin induces blood coagulation, blood pressure decrease and a neurotoxic behavior named barrel rotation. The mechanisms involved in this neurotoxic activity are not known. Whereas gyroxin is a member of enzymes with high potential to become a new drug with clinical applications such as thrombin, batroxobin, ancrod, tripsyn and kalicrein, it is important to find out how gyroxin works. The analysis on agarose gel electrophoresis and circular dichroism confirmed the molecules' integrity and purity. The gyroxin intravenous administration in mice proved its neurotoxicity (barrel rotation). In vivo studies employing intravital microscopy proved that gyroxin induces vasodilation with the participation of protease activated receptors (PARs), nitric oxide and Na+K+ATPase. The leukocytes' adherence and rolling counting indicated that gyroxin has no pro inflammatory activity. Gyroxin induced platelet aggregation, which was blocked by inhibitors of PAR1 and PAR4 receptors (SCH 79797 and tcY-NH{sub 2}, respectively). Finally, it was proved that the gyroxin temporarily alter the permeability of the blood brain barrier (BBB). Our study has shown that both the protease-activated receptors and nitric oxide are mediators involved in the biological activities of gyroxin. (author)

  5. Control of the surface radioactive contamination in the field of biological research; Control de la contaminacion radiactiva superficial en el ambito de la investigacion biologica

    Energy Technology Data Exchange (ETDEWEB)

    Calvo, S.; Encina, A. de la; Gaspar, J.; Macias, M. T.; Sanchez, A.; Usera, F.

    2012-11-01

    The manipulation of unsealed sources in biomedical research involves significant risk of radioactive contamination. the aim of this study has been to analyze the radioactive contamination occurring in the field of biomedical research, assessing its magnitude, identifying the equipment that can be contaminated with higher probability and monitoring the evolution of the contaminations production taking into account the radioisotopes and the activities uses, and the radiation protection control applied. The data used for this study correspond to a very lengthy period of time and it have been collected in the radioactive facility, of the Centro Nacional de Biotecnologia (CSIC), a very large biological research centre that can be used perfectly as a reference for this area. The results obtained show a gradual and significant decrease in the incidence of the radioactive contamination. This is due to the optimization of radiation protection standards applied and the implementation or a systematic operational radiation protection program. (Author) 13 refs.

  6. Flow rate and biological quality of the water in the river Anoia; Caudal y calidad biologica de las aguas del rio Anoia

    Energy Technology Data Exchange (ETDEWEB)

    Munne, A.; Prat, N. [Departamento d`Ecologia, Facultat de Biologia, Universitat de Barcelon, Barcelona (Spain)

    1997-04-01

    Floods and droughts are typical in Mediterranean rivers, with large annual and inter annual fluctuations in flow. This is the case of the river Anoia in which in addition, water is intensively used for agriculture, industry and urban supply. This causes the flow to be scarce in summer and an increase in river pollution due to the lack dilution. We studied the river during two consecutive springs and summers (1994-1995) with very different hydrology. While in 1994 the basin was subject to a severe drought, in 1995 the climate was milder. As a result in 1995 the main river maintained a continuous flow throughout mos of its length and in most of the tributaries, while in 1994 flow was intermittent in the main channel and the tributaries. Lower fluxes in 1994 resulted in increased pollution which can be measured by both the physico-chemical characteristics of the water and biotic indices. As the basin is used in headwaters for agriculture, water in the upper part is rich in nitrogen an phosphorus, leading to eutrophication process with Cladophora abundant in the river, although the macro invertebrate community is still rich. In the middle part of the basin, in summer, the community is reduced in abundance and diversity due to the water abstraction and pollution, especially in 1994. In the lower part of the area studied, the river is devoid of macro invertebrates due to the inadequate water sewage treatment and the lack of dilution. In this study we compare the evolution of biological water quality in the two sampled years by two different biotic indices (BILL and BMWP). (Author) 15 refs.

  7. Herbicides synthesis and biological tests to determine its activity on the weeds; Sintesis de herbicidas y pruebas biologicas para determinar su actividad sobre la maleza

    Energy Technology Data Exchange (ETDEWEB)

    Romero M, Artemisa [Universidad Autonoma Metropolitana-Xochimilco, Mexico, D. F. (Mexico); James M, Guillermo [Universidad Autonoma Metropolitana-Xochimilco, Mexico, D. F. (Mexico); Miramontes F, Benjamin [Universidad Autonoma Metropolitana-Xochimilco, Mexico, D. F. (Mexico); Haro C, Jorge [Universidad Autonoma Metropolitana-Iztapalapa, Mexico, D.F. (Mexico)

    1995-02-01

    Four derivatives of Dicamba (2-methoxy-3, 6-dichlorobenzoic acid) were obtained: 2-methoxy-3, 6-dichlorobenzyl alcohol, 2-methoxy-3, 6-dichlorobenzaldehyde, 2-methoxy-3, 6-dichlorobenzaldoxime, tested on weed, and 2-methoxy-3, 6-dichlorobenzylamine. The weeds were Taraxacum officinale Weber, Amaranthus silvester and Sonchus oleraceus L. The oxime did not show activity on Amaranthus silvester, all the substances were active on the other two weeds. [Spanish] Se sintetizaron cuatro derivados del herbicida Dicamba (acido 2-metoxi-3, 6-diclorobenzoico), y se hicieron pruebas de la actividad de tres de ellos sobre maleza de Xochimilco. Se probaron el alcohol 2-metoxi-3, 6-diclorobencilico, 2-metoxi-3, 6-diclorobenzaldehido, 2-metoxi-3, 6-diclorobenzaldoxima. La maleza fue Taraxacum officinale Weber (Diente de leon), Amaranthus silvester (Amaranto silvestre) y Sonchus oleraceus L. (Sonchus). En amaranto, la oxima fue el unico que no presento actividad. En diente de leon y Sonchus, todas las sustancias probadas presentaron actividad.

  8. Optimization of a radiochemistry method for plutonium determination in biological samples; Optimizacion del metodo radioquimico para determinar plutonio en muestras biologicas

    Energy Technology Data Exchange (ETDEWEB)

    Cerchetti, Maria L; Arguelles, Maria G [Comision Nacional de Energia Atomica, Ezeiza (Argentina). Laboratorio de Dosimetria Personal y de Area

    2005-07-01

    Plutonium has been widely used for civilian an military activities. Nevertheless, the methods to control work exposition have not evolved in the same way, remaining as one of the major challengers for the radiological protection practice. Due to the low acceptable incorporation limit, the usual determination is based on indirect methods in urine samples. Our main objective was to optimize a technique used to monitor internal contamination of workers exposed to Plutonium isotopes. Different parameters were modified and their influence on the three steps of the method was evaluated. Those which gave the highest yield and feasibility were selected. The method involves: 1-) Sample concentration (coprecipitation); 2-) Plutonium purification; and 3-) Source preparation by electrodeposition. On the coprecipitation phase, changes on temperature and concentration of the carrier were evaluated. On the ion-exchange separation, changes on the type of the resin, elution solution for hydroxylamine (concentration and volume), length and column recycle were evaluated. Finally, on the electrodeposition phase, we modified the following: electrolytic solution, pH and time. Measures were made by liquid scintillation counting and alpha spectrometry (PIPS). We obtained the following yields: 88% for coprecipitation (at 60 C degree with 2 ml of CaHPO{sub 4}), 71% for ion-exchange (resins AG 1x8 Cl{sup -} 100-200 mesh, hydroxylamine 0.1N in HCl 0.2N as eluent, column between 4.5 and 8 cm), and 93% for electrodeposition (H{sub 2}SO{sub 4}-NH{sub 4}OH, 100 minutes and pH from 2 to 2.8). The expand uncertainty was 30% (NC 95%), the decision threshold (Lc) was 0.102 Bq/L and the minimum detectable activity was 0.218 Bq/L of urine. We obtained an optimized method to screen workers exposed to Plutonium. (author)

  9. The nitrogen biological fixing as support for renewable energy production; A fixacao biologica de nitrogenio como suporte para a producao de energia renovavel

    Energy Technology Data Exchange (ETDEWEB)

    Quesada, Diego Mureb; Frade, Catia; Resende, Alexander; Polidoro, Jose Carlos; Reis, Veronica Massena; Boddey, Robert; Alves, Bruno Jose Rodrigues; Urquiaga, Segundo [EMBRAPA, Seropedica, RJ (Brazil). Setor de Agrobiologia; Xavier, Deise [EMBRAPA, Juiz de Fora, MG (Brazil). Gado de Leite

    2000-07-01

    Recently, rapid-growing grasses which possess the C4 photosynthetic pathway such as Miscanthus and Pennisetum spp. have been considered as prime candidates for the production of bio-fuels. In the case of Pennisetum purpureum (Elephant grass) and related hybrids, the genotypes studied until now have generally been selected for high production of forage for cattle under high N fertiliser additions. For forage production it is desirable that the tissues have high protein content. However, for biomass production the priority should be for carbon accumulation and the highest possible biomass production per unit of applied fertiliser. The manufacture of N fertiliser involves a very high cost in terms of fossil energy, and if large additions are made the grass biomass produced may have only a little more (or even less) calorific value than that utilised in the manufacture of the fertiliser. This completely negates the prime objective of bio fuel production which the replacement of energy derived from non-renewable fossil sources with that derived from solar radiation. Recently the team headed by Dr Johanna Doebereiner at EMBRAPA Agrobiologia have shown that several tropical grasses (including sugar cane and elephant grass) are able to obtain significant quantities of N through the action of associated endo phytic N{sub 2}-fixing bacteria. Derived from this line of reasoning a study is being conducted in the field to select appropriate genotypes of Pennisetum purpureum which are efficient is biomass production in soil of very low N fertility. In the first stage four genotypes have been selected : Gramafante, Cameroon, BAG 02 and Roxo, which have been the most productive over a 5 year period without N fertiliser addition.A complementary study is underway to evaluate biomass production and quantify the N{sub 2} fixation input. Preliminary results are promising and show that these materials produce well without N fertiliser application a with a contribution of approximately 30 % of plant N derived from N{sub 2}-fixing, which can be regarded as very satisfactory for a graminaceous specie. (author)

  10. Alpha process with biological elimination of nitrogen. Application of mathematical models; Proceso alpha con eliminacion biologica de nitrogeno. Aplicacion de modelos matematicos

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez, J. C.; Lopez-Carrasco, M. D.; Cortacans, J. A.; Larrea, L.; Larrea, A.

    1999-07-01

    This article illustrates the advantages of a step feed process for the biological elimination of nitrogen by presenting the experiments carried out by INFILCO at a pilot plant in San Sebastian. This arrangement, also known as the alpha (alternative phase step feed) process, reduces the volume of the biological reactor, eliminates the need for internal recycling and optimised the consumption of the organic matter used for denitrication. This article also demonstrates the possibility of employing a mathematical model as a tool in assessing, designing and operating full scale treatment plants for typically urban sewage. (Author) 6 refs.

  11. A design of Biological Network in the Basin of Jucar; El diseno de la Red Biologica en la Cuenca del Jucar

    Energy Technology Data Exchange (ETDEWEB)

    Martinez Mas, J F; Correcher Martinez, E; Pinon, A; Martinez Muro, M A; Pujante Mora, A M

    2002-07-01

    In this study results obtained in the design of the Biological Network carried out during the year 2000 in 221 sampling points in 106 rivers of the environment of the Confederation Hidrografica of the Jucar are presented. The Biological network is based in the analysis of hydro morphological physical, chemical and biological parameters (macro invertebrates, diatoms, macrofits and fishes) that allow to know the ecological status of the studied rivers. The quality of the rivers were stablished with BMWP index and completed with the calculation in some selected sampling sites of other indexes: 1CG, macrofits index (IM), diatoms index (ID), ecotrofic index (IE). The results indicate the division of the study area in three big groups: the sampling sites located in the headwaters and small streams, with an excellent conservation state and with the presence of indicative species, the medium upland river sites which are regulated by reservoirs and dams, and the lowland rivers with the biggest accumulation of contamination and the biggest population density. (Author) 13 refs.

  12. Type tests to the automatic system of thermoluminescent dosimetry acquired by the CPHR for personnel dosimetry; Pruebas tipo al sistema de dosimetria termoluminiscente automatico adquirido por el CPHR para dosimetria personal

    Energy Technology Data Exchange (ETDEWEB)

    Molina P, D.; Pernas S, R. [Centro de Proteccion e Higiene de las Radiaciones (CPHR), Calle 20, No. 4113 e/ 41 y 47, Miramar, Ciudad de la Habana (Cuba)]. e-mail: daniel@cphr.edu.cu

    2005-07-01

    The CPHR individual monitoring service acquired an automatic RADOS TLD system to improve its capacities to satisfy the increasing needs of their national customers. The TLD system consists of: two automatic TLD reader, model DOSACUS, a TLD irradiator and personal dosimeters card including slide and holders. The dosimeters were composed by this personal dosimeters card and LiF: Mg,Cu,P (model GR-200) detectors. These readers provide to detectors a constant temperature readout cycle using hot nitrogen gas. In order to evaluate the performance characteristics of the system, different performance tests recommended by the IEC 1066 standard were carried out. Important dosimetric characteristics evaluated were batch homogeneity, reproducibility, detection threshold, energy dependence, residual signal and fading. The results of the tests showed good performance characteristics of the system. (Author)

  13. Type tests to the automatic thermoluminescent dosimetry system acquired by the CPHR for personal dosimetry; Pruebas tipo al sistema de dosimetria termoluminiscente automatico adquirido por el CPHR para dosimetria personal

    Energy Technology Data Exchange (ETDEWEB)

    Molina P, D.; Pernas S, R.; Martinez G, A. [Centro de Proteccion e Higiene de las Radiaciones (CPHR), Calle 20 No. 4113 e/41 y 47. Playa, C.P. 11300, A.P. 6195, C.P. 10600 La Habana (Cuba)

    2006-07-01

    The CPHR individual monitoring service acquired an automatic RADOS TLD system to improve its capacities to satisfy the increasing needs of their national customers. The TLD system consists of: two automatic TLD reader, model DOSACUS, a TLD irradiator and personal dosimeters card including slide and holders. The dosimeters were composed by this personal dosimeters card and LiF:Mg,Cu,P (model GR-200) detectors. These readers provide to detectors a constant temperature readout cycle using hot nitrogen gas. In order to evaluate the performance characteristics of the system, different performance tests recommended by the IEC 1066 standard were carried out. Important dosimetric characteristics evaluated were batch homogeneity, reproducibility, detection threshold, energy dependence, residual signal and fading. The results of the tests showed good performance characteristics of the system. (Author)

  14. Use of radiological evaluation system from the Instituto de Radioprotecao e Dosimetria in the analysis of recent radiation accidents; Utilizacao do sistema de avaliacao radiologica do Instituto de Radioprotecao e Dosimetria na analise de acidentes radiologicos recentes

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Rodolfo Julio da

    2013-07-01

    The response to an emergency situation involving ionizing radiation requires the joint participation of professionals from various kind of knowledge, belonging to public and private organizations (in the local, state and federal levels). The theme radiation tends to be an additional challenging factor - considering that it's, usually, remembered for its macabre and ominous aspect, in spite of the benefits provided by it - which makes the implementation of actions to protect the public, emergency professionals, the environment and property, very difficult. To this, we can add the complicating factor that, in most cases, the technician (holder of basic or advanced on the subject) is far !Tom the place where this action unfolds. The accident/incident takes the form of a radioactive source (sometimes orphaned, one that gone astray or even stolen) that is found by a person unaware of the risks to which they are being exposed or, let not forget about it, the non-observance of safety standards in industries and workplaces, by their own operators. Thus, before integrating emergency response plans with conventional plans specific to the prompt response to radiological emergencies, it is necessary that some measures had been anticipated and that some actions had, already, been planned - with the intention of mitigate health, psychological and economical damage, in ali of kind. To do this, since in the course of the second decade of the second millennium, and since you own a portable personal computer (Note or Netbook), or even with a mobile device (cellular) with a bit more resources, both of them previously updated, a responder (or even a qualified technician that is next to that fact) may already guide, at least, about a safety distances !Tom the source. Since he had knowledge about some characteristics of the source (its individual data), he can plan ahead about the possible serious situation that unfolds itself and emergency responders will find, when it get to the site. With the situation assessments done, the formal emergency team triggered will can prepare itself (with personnel and technical-materials facilities) to resolve the incident in the shortest time and with the least possible risks. (author)

  15. Computerized dosimetry of I-125 sources model 6711; Dosimetria computarizada de las fuentes de I-125 modelo 6711

    Energy Technology Data Exchange (ETDEWEB)

    Isturiz, J [Centre de Radiotherapie du Parc, Dijon (France)

    2001-07-01

    It tries on: physical presentation of the sources; radiation protection; mathematical model of I-125 source model 6711; data considered for the calculation program; experimental com probation of the dose distribution; exposure rate and apparent activity; techniques of the use given to the sources I-125; and the calculation planning systems. [Spanish] Trata sobre presentacion fisica de las fuentes, radioproteccion, modelo matematico de las fuentes I-125 modelo 6711, datos considerados en el programa de calculo, comprobacion experimental de la distribucion de dosis, tasa de exposicion y actividad aparente, tecnicas de utilizacion de las fuentes I-125; y los sistemas de planificacion del calculo de las dosis.

  16. Dosimetry of wires and single ribbons of Iridium 192; Dosimetria de alambres y ribbons individuales de Iridio-192

    Energy Technology Data Exchange (ETDEWEB)

    Mazzucco, L.D. [Centro Medico Nuclear S.R.L. San Juan (Argentina)

    1998-12-31

    The objective of this work is in order to present in table formats the dosimetry of wires and single ribbons of Iridium with lengths 1-12 cm for each one linear source along the bisector which is perpendicular at tissue sources (water) computed for linear activity 1 mCi/cm in the case of wires, and 1 mCi/seed for ribbons. The above tables are of direct use, adaptable at particular cases so they facilitate logarithmic graphics of doses in function of the distance for interpolation and use in the treatments planning. It was shown that for two sources with identical linear activity and total length, one of the equidistant seeds at 1 cm (ribbon) and one wire on the other hand, the differences in dose rates in near positions can be about the 15% so corroborating that it is not possible to use wire tables for seeds neither vice versa. Moreover it was elaborated tables of practical direct use for dose rate in water at c Gy/hr for wires and Ribbons 1-12 cm length and from 0.5-10 cm of distance in the perpendicular bisector at the Iridium implant. (Author)

  17. Development of a guidance guide for dosimetry in computed tomography; Desenvolvimento de um guia orientativo para dosimetria em tomografia computadorizada

    Energy Technology Data Exchange (ETDEWEB)

    Fontes, Ladyjane Pereira

    2016-07-01

    Due to frequent questions from users of ionization chambers pencil type calibrated in the Instrument Calibration Laboratory of the Institute of Energy and Nuclear Research (LCI - IPEN), on how to properly apply the factors indicated in their calibration certificates, a guide was prepared guidance for dosimetry in computed tomography. The guide includes guidance prior knowledge of half value layer (HVL), as it is necessary to know the effective beam energy for application quality for correction factor (kq). The evaluation of HVL in TC scanners becomes a difficult task due to system geometry and therefore a survey was conducted of existing methodologies for the determination of HVL in clinical beams Computed Tomography, taking into account technical, practical and economic factors. In this work it was decided to test a Tandem System consists of absorbing covers made in the workshop of IPEN, based on preliminary studies due to low cost and good response. The Tandem system consists of five cylindrical absorbing layers of 1mm, 3mm, 5mm, 7mm and 10mm aluminum and 3 cylindrical absorbing covers 15mm, 25mm and acrylic 35mm (PMMA) coupled to the ionization chamber of commercial pencil type widely used in quality control tests in dosimetry in clinical beams Computed tomography. Through Tandem curves it was possible to assess HVL values and from the standard curve pencil-type ionization chamber, Kq find the appropriate beam. The elaborate Guide provides information on how to build the calibration curve on the basis of CSR, to find the Kq and information for construction Tandem curve, to find values close to CSR. (author)

  18. Calculation of absorbed dose in water by chemical Fricke dosimetry; Calculo de dose absorvida na agua por dosimetria quimica Fricke

    Energy Technology Data Exchange (ETDEWEB)

    Rodrigues, Adenilson Paiva, E-mail: adenilson-fisica@hotmail.com.br [Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, RJ (Brazil); Meireles, Ramiro Conceicao [Fundacao do Cancer, Rio de Janeiro, RJ (Brazil)

    2016-07-01

    This work is the result of a laboratory activity performed in Radiological Sciences Laboratory (CRL), linked to the State University of Rio de Janeiro (UERJ). This practice aimed to determine the absorbed dose to water, through the primary calibration method called dosimetry Fricke, which consists of ferrous ions (Fe + 2) to ferric (Fe + 3), generated by water radiolysis products which is the structural change of water molecule caused by ionizing radiation. A spectrophotometer was used to extract data for analysis at a wavelength (λ) 304 and 224 nm with function of measuring the absorbance using bottles with irradiated and nonirradiated Fricke solution. (author)

  19. Thermoluminescent dosimetry in dentistry students in radiological training; Dosimetria termo-luminiscente en estudiantes de odontologia en entrenamiento radiologico

    Energy Technology Data Exchange (ETDEWEB)

    Loya, M.; Duarte, R. [Escuela de Odontologia, Universidad Autonoma de Chihuahua (Mexico); Montero, M.E. [CIMAV, Chihuahua (Mexico); Gonzalez, P.R. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico); Ojeda, S.L.; Sanin, L.H. [Facultad de Enfermeria y Nutriologia, Chihuahua (Mexico)

    2007-07-01

    Full text: In this work, the obtained results of the mensuration of the equivalent one are presented of dose (E), in students of the career of Dentistry who during their training in radiology complete the three lists of patient, odontologist and observer. The study one carries out with 35 students (Odontologists), 7 men and 28 women, with ages between 20 and 24 years. A characterization of risk was made following the methodology of the Agency for the environmental control of United States (EPA), counting the number of shots in each list, during the time of training. The effective energy of the X rays used was of 24 KeV. The irradiation technique understood two modalities; the first one with 3 shots of 1.25 seconds and the second with 5 shots of 0.6 seconds. The measurement of E, was carried out with thermoluminescent dosemeters (TL) of LiF:Mg,Cu,P+PTFE, developed in the National Institute of Nuclear Research (ININ). The homogenization of the dosemeters showed a variation in its response to the radiation of 1.85%DS. For the odontologist position, the dosemeters was placed to the height of the chest and the measurement was multiplied by the number of shots that it was 304. The E value was of 3.62 mSv/four-month (11 mSv/year), without any safety equipment and of 2.02 mSv/four-month (6.14 mSv/year), when was considered the scenario for this position with use of vest and lead collar, like safety equipment, diminishing E, almost 50%. In the case of the corresponding position to patient, E, it was measured in different organs of interest, the obtained results are compared with the international standards. Recommendations are given for similar cases. (Author)

  20. Dose measurements in dental radiology using thermoluminescent dosimetry;Medicoes de dose em radiodiagnostico odontologico utilizando dosimetria termoluminescente

    Energy Technology Data Exchange (ETDEWEB)

    Chiara, Ana Claudia M. de; Costa, Alessandro M. [Universidade de Sao Paulo (FFCLRP/USP), Ribeirao Preto, SP (Brazil). Faculdade de Filosofia, Ciencias e Letras; Pardini, Luiz Carlos [Universidade de Sao Paulo (FORP/USP), Ribeirao Preto, SP (Brazil). Faculdade de Odontologia

    2009-07-01

    The aim of this work was the implementation of a code of practice for dosimetry in dental radiology using the technique of thermoluminescent dosimetry. General principles for the use of thermoluminescent dosimeters were followed. The irradiations were performed using ten X-ray equipment for intra-oral radiography and an X-ray equipment for panoramic radiography. The incident air kerma was evaluated for five different exposure times used in clinical practice for intra-oral radiographs. Using a backscatter factor of 1.2, it was observed that approximately 40% of the entrance skin dose values found for intra-oral radiographs are above the diagnostic reference level recommended in national regulation. Different configurations of voltage and current were used representing the exposure as a child, woman and man for panoramic radiographs. The results obtained for the air kerma area product were respectively 53.3 +- 5.2 mGy.cm{sup 2}, 101.5 +- 9.5 mGy.cm{sup 2} and 116.8 +- 10.4 mGy.cm{sup 2}. The use of thermoluminescent dosimetry requires several procedures before a result is recorded. The use of dosimeters with ionization chambers or semiconductors provides a simple and robust method for routine measurements. However, the use of thermoluminescent dosimetry can be of great value to large-scale surveys to establish diagnostic reference levels. (author)

  1. Dosimetry computer module of the gamma irradiator of ININ; Modulo informatico de dosimetria del irradiador gamma del ININ

    Energy Technology Data Exchange (ETDEWEB)

    Ledezma F, L. E.; Baldomero J, R. [ININ, Gerencia de Sistemas Informaticos, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico); Agis E, K. A., E-mail: luis.ledezma@inin.gob.mx [Universidad Autonoma del Estado de Mexico, Facultad de Ingenieria, Cerro de Coatepec s/n, Ciudad Universitaria, 50100 Toluca, Estado de Mexico (Mexico)

    2012-10-15

    This work present the technical specifications for the upgrade of the dosimetry module of the computer system of the gamma irradiator of the Instituto Nacional de Investigaciones Nucleares (ININ) whose result allows the integration and consultation of information in industrial dosimetry subject under an outline client-server. (Author)

  2. Differences between cross-section libraries for neutron dosimetry; Diferencas entre bibliotecas de secoes de choque para dosimetria de neutrons

    Energy Technology Data Exchange (ETDEWEB)

    Tardelli, T.C.; Stecher, L.C.; Coelho, T.S.; Castro, V.A. De; Cavalieri, T.A.; Menzel, F.; Giarola, R.S.; Domingos, D.B.; Yoriyaz, H., E-mail: tiago.tardelli@gmail.com [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil). Centro de Engenharia Nuclear

    2013-08-15

    Absorbed dose calculations depend on a consistent set of nuclear data used in simulations in computer codes. Nuclear data are stored in libraries, however, the information available about the differences in dose caused by different libraries are rare. The libraries are processed by a computer system to be able to be used by a radiation transport code. One of the systems capable of processing nuclear data is the NJOY system. The objective of this study is to evaluate the nuclear data libraries for neutrons available in the literature, and to quantify the differences in absorbed dose obtained using the libraries JENDL 4.0, JEFF 3.3.1 and ENDF/B.VII. The absorbed dose calculation was performed on a simple geometric model, as spheres, and in anthropomorphic model of the human body based on the ICRP-110 for neutron transport simulation using the MCNP5 code. The results were compared with literature data. The results obtained with cross sections from the libraries JEFF and ENDF/B.VII have shown to be identical in most cases, except for one case where the difference has exceeded 10%. The results obtained with JENDL library has shown to be considerably different in most cases comparing to other two libraries. Some differences were over 200%. The dose calculations showed differences between the libraries, which is justified by differences in the cross sections. It has been observed that the cross sections values of certain nuclides assume quite different values in different libraries. These differences in turn cause considerable differences in dose calculations. (author)

  3. Application of numerical analysis methods to thermoluminescence dosimetry; Aplicacion de metodos de analisis numerico a la dosimetria por termoluminiscencia

    Energy Technology Data Exchange (ETDEWEB)

    Gomez Ros, J M; Delgado, A

    1989-07-01

    This report presents the application of numerical methods to thermoluminescence dosimetry (TLD), showing the advantages obtained over conventional evaluation systems. Different configurations of the analysis method are presented to operate in specific dosimetric applications of TLD, such as environmental monitoring and mailed dosimetry systems for quality assurance in radiotherapy facilities. (Author) 10 refs.

  4. Thermoluminescent dosimetry in the radiodiagnostic area of the INNSZ; Dosimetria termoluminiscente en el area de radiodiagnostico del INNSZ

    Energy Technology Data Exchange (ETDEWEB)

    Azorin V, J.C.; Azorin N, J.; Rivera M, T. [Universidad Autonoma Metropolitana-Iztapalapa, 09340 Mexico D.F. (Mexico)

    1998-12-31

    During the year 1997 the Secretaria de Salud through the Direccion de Riesgos Radiologicos published the Mexican Official Standard about the medical diagnostic using X-rays in the Diario Oficial de la Federacion. They are of obligatory observance for all hospitals and radiological rooms which have medical diagnostic with X-ray equipment in the country. These standards were emitted with the purpose improve the conditions as for safety and radiological protection it is referred employing this type of ionizing radiation emitter equipment. Also it is presented the evaluation results about conditions existing about in thirteen X-ray medical diagnostic rooms in the Instituto Nacional de la Nutricion with the purpose of providing the radiological protection means toward the occupationally exposure personnel. It was realized measurements of each one of the blinding barriers for the X-ray equipment and it was suggested the appointments arrangement. (Author)

  5. Use of the calorimeter in the dosimetry for electron accelerators; Uso del calorimetro en la dosimetria para aceleradores de electrones

    Energy Technology Data Exchange (ETDEWEB)

    Chavez B, A

    1991-02-15

    The measure of different radiation types, with specific dosemeters, requires that the absorbed dose should be measured with accuracy by some common standard. The existent problem around the dosimetry of accelerated electrons has forced to the development of diverse detector types that after having analyzed the characteristics; dependability and reproducibility are used as dosemeters. Recently the calorimeters have been developed, with the purpose of carrying out dosimetry for electron accelerators. The RISO laboratory in Denmark, in it 10 MeV accelerator had been used for the dosimetry those water calorimeters, later on, using the principle of the water calorimeter, it was designing one similar, for the accelerator of 400 keV. Recently manufactured simple calorimeters of graphite have been used, which can be used in both accelerators of 10 MeV and 400 keV. (Author)

  6. Accreditation ISO/IEC 1705 in dosimetry: Experience and results; Acreditacion ISO/IEC 17025 en dosimetria: Experiencia y resultados

    Energy Technology Data Exchange (ETDEWEB)

    Martin Garcia, R.; Navarro Bravo, T.

    2013-07-01

    The objective of this work is to present the experience in the process of accreditation of the radiation dosimetry service in which there are trials for the determination of radiation doses due to internal and external exhibitions. Is They describe the aspects that were considered for the design and development of a system of quality and results after its implementation. A review of the benefits accreditation has been reported to the organization is finally made. (Author)

  7. Dosimetry of professionals involved in radio guided surgery; Dosimetria de los profesionales involucrados en la cirugia radioguiada

    Energy Technology Data Exchange (ETDEWEB)

    Barreto, A. C.; Cardoso, G.; Ferreira, L. S.; Santos, A. I.

    2013-07-01

    The procedure of sentinel node localization is important because it allows less invasive staging of breast cancer. With the capture probe after intradermal injection of the radiopharmaceutical, the surgeon can identify the location of the sentinel node. The use of radioactive materials, generated considerable concern in terms of radiation exposure. The main objective is to evaluate the possible individual dose of each professional involved in the process of radio-location. (Author)

  8. Dosimetry of the patient and occupational in interventional procedures; Dosimetria del paciente y ocupacional en procedimientos intervencionistas

    Energy Technology Data Exchange (ETDEWEB)

    Andisco, D. [Universidad de Buenos Aires, Facultad de Medicina, Paraguay 2155, C1121AAA Buenos Aires (Argentina); Bourel, V.; Schmidt, L.; Fernandez, N., E-mail: dandisco@fmed.uba.ar [Universidad Favaloro, Facultad de Ciencias e Ingenieria, Solis 453, C1078AAI, Buenos Aires (Argentina)

    2014-08-15

    The big necessity to estimate the entrance doses in skin that the patients receive when are exposed to interventional procedures and the personal dosimetry of the professionals that work in these procedures in operating room, has taken to the analysis of different possibilities that allow to carry out these estimates. The objective of this work was to analyze the possibility of using Optically Stimulated Luminescence dosimeters; comparing the results with ionizing cameras and electronic personal dosimeters. To carry out these estimates, we work with a X-ray equipment Phillips Allure, acrylic phantoms, a dosimetry system formed by ionization camera and dosimeter UNIDOS E, OSL (Nano dots) dosimeters and electronic lavalieres Aloka brand, PDM 117 models. To estimate the doses that the patients receive, entrance dose was measured in skin and in personal dosimetry inside places where the medical professionals are habitually located in different situations among 5 and 60 irradiation min. In the case of direct radiation, the OSL (Nano dots) present reliable readings and only were dispersed values for the measurements of secondary radiation. The measured values and the linking among them were also analyzed. The OSL (Nano dot) dosimetry behaves reliable way when is located in the ranges of more dose to 0,1 mGy, according to the maker indications and fundamentally for direct beams of the hemodynamics equipment being ideal for the measurement of entrance dose in skin. For the Nano dots use in personal dosimetry the results should be read carefully for values major to 0,1 mGy and being completely inappropriate for minor values. (Author)

  9. A new implementation of multichannel radiochromic film dosimetry; Una nueva implementacion del analisis multicanal para la dosimetria mediante peliculas radiocromicas

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez Rodriguez, C.; Martin Martin, G.; Bermudez Luna, R.; Lopez Fernandez, A.; Tores Olombrada, M. V. de

    2014-07-01

    The aims of this paper are to carry out a new implementation of the multichannel radiochromic film dosimetry (Micke A, Lewis D, Yu X. Multichannel film dosimetry with nonuniformity correction. Med Phys 2011;38:2523-34), to quantify the variation in gamma index as compared to the single channel film dosimetry, and to determine if the procedure achieves similar results by means of a different scanner that the one used by Micke et al. Radiochromic EBT2 films and a Microtek 9000 XL scanner were used. Our procedure simplifies the system calibration splitting it into two factors, manufactured batch and digitalization specific. Absorbed dose spatial distributions from an open radiotherapy beam without any modulation and 20 IMRT treatments were determined. Their gamma index maps were calculated and a comparison of the results from single channel and multichannel dosimetry was performed. A 5% mean increase in concordance was obtained by using the multichannel film dosimetry. Our results are similar to those reported by Micke et al. even though we are using a different scanner. (Author)

  10. Radiation chemical dosimetry by means of nitrate-nitrite; Dosimetria quimica de la radiacion aplicacion del sistema nitrato-nitrito

    Energy Technology Data Exchange (ETDEWEB)

    Tormo Ferrero, M J

    1977-07-01

    The different chemical systems used in dosimetry and the selection criteria for them are described. The general topics in dosimetry with alkali nitrates as well as the phenomena occurring in their radiolysis are also treated. The possibility of application in dosimetric areas useful in radiosterilization and industrial processes is studied too. (Author) 22 refs.

  11. A definitive method for dosimetry with radiochromic movie; Un metodo definitivo para la dosimetria con pelicula radiocromica

    Energy Technology Data Exchange (ETDEWEB)

    Miras del Rio, H.; Arrans Lara, R.

    2013-07-01

    Despite the undoubted benefits of radiochromic film as a two-dimensional radiation detector, the manufacturing process and characteristics of scanners make to present some inherent difficulties that result that its use is complex, tedious, and if not performed so appropriate, imprecise. A protocol that simplifies the calibration process while reducing the number of films used for this purpose is proposed systematically corrects several difficulties, both inherent in the manufacture of the film as the reader and, what is more important achieves levels comparable to those of other more widespread use detectors accuracy. (Author)

  12. Study of dosimetry CT in Skull for pediatric patients; Estudio de dosimetria TC en craneo para pacientes pediatricos

    Energy Technology Data Exchange (ETDEWEB)

    Ramos Amores, D.; Serna Berna, A.; Mata Colodro, F.; Puchades Puchades, V.

    2013-07-01

    The dose that receiving the patients in CT studies is the highest that can be received in a study of Radiology. If patients are children and we do studies with the same parameters as adults, they will receive a higher dose of radiation. This work seeks to expose the result of a dosimetric study on CT for children aged 0-15, carried out at the Hospital General Universitario de Santa Lucia in Cartagena during the year 2012. (Author)

  13. EPR dosimetry in tooth enamel by x radiation; Dosimetria EPR en esmalte dental irradiado con rayos X

    Energy Technology Data Exchange (ETDEWEB)

    Dubner, Diana; Perez, Maria del Rosario; Gisone, P. [Autoridad Regulatoria Nuclear, Buenos Aires (Argentina)] E-mail: ddubner@cae.arn.gov.ar; Fainstein, C.; Winkler, E. [Comision Nacional de Energia Atomica (CNEA), San Carlos de Bariloche (Argentina). Centro Atomico Bariloche]|[Universidad Nacional de Cuyo, Mendoza (Argentina). Inst. Balseiro; Saravi, Margarita [Comision Nacional de Energia Atomica (CNEA) (Argentina). Centro Atomico Ezeiza; Davila, Francisco [Ateneo Argentino de Odontologia, Buenos Aires (Argentina)

    2001-07-01

    Tooth enamel, extracted from molars, was irradiated with 66 keV X-rays, with doses up to 1 Gy. The preparation of the powder samples is described, as well as the protocol for the acquisition and processing of the spectra. The radiation induced paramagnetism is measured, at room temperature, by ESR spectroscopy. The ESR spectra is well described considering two paramagnetic species, with magnetic moments (in units of Bohr magnetrons) g=2,0041, and g1=2,0018, g2=1,9972. The ESR data (peak-to-peak amplitude per mg, hpp/mg, vs dose D), for doses 0 Gy

  14. Dosimetria “in vivo” para implantes ginecologicos de cancer de cervix, con braquiterapia de alta tasa de dosis (hdrb

    OpenAIRE

    Guillen G., Oscar O.; Duran S., Rosalia

    2009-01-01

    SOLCA Guayaquil en el Servicio de Braquiterapia dispone de un equipo de carga diferida de alta tasa de dosis, Microselectron HDR de la Empresa Nucletron, equipado con una fuente de Ir192, para la realización de tratamiento a pacientes portadores de cáncer en diferentes localizaciones. Se usa un maniquí de sólido de PMMA tipo 9193, de la PTW con el objetivo de determinar la tasa de kerma en aire de la fuente de Ir192, cuyo error no supera el 0.5%. Adicionalmente, se establece un mecanismo ...

  15. Use of radiological evaluation system from the Instituto de Radioprotecao e Dosimetria in the analysis of recent radiation accidents

    International Nuclear Information System (INIS)

    Silva, Rodolfo Julio da

    2013-01-01

    The response to an emergency situation involving ionizing radiation requires the joint participation of professionals from various kind of knowledge, belonging to public and private organizations (in the local, state and federal levels). The theme radiation tends to be an additional challenging factor - considering that it's, usually, remembered for its macabre and ominous aspect, in spite of the benefits provided by it - which makes the implementation of actions to protect the public, emergency professionals, the environment and property, very difficult. To this, we can add the complicating factor that, in most cases, the technician (holder of basic or advanced on the subject) is far !Tom the place where this action unfolds. The accident/incident takes the form of a radioactive source (sometimes orphaned, one that gone astray or even stolen) that is found by a person unaware of the risks to which they are being exposed or, let not forget about it, the non-observance of safety standards in industries and workplaces, by their own operators. Thus, before integrating emergency response plans with conventional plans specific to the prompt response to radiological emergencies, it is necessary that some measures had been anticipated and that some actions had, already, been planned - with the intention of mitigate health, psychological and economical damage, in ali of kind. To do this, since in the course of the second decade of the second millennium, and since you own a portable personal computer (Note or Netbook), or even with a mobile device (cellular) with a bit more resources, both of them previously updated, a responder (or even a qualified technician that is next to that fact) may already guide, at least, about a safety distances !Tom the source. Since he had knowledge about some characteristics of the source (its individual data), he can plan ahead about the possible serious situation that unfolds itself and emergency responders will find, when it get to the site. With the situation assessments done, the formal emergency team triggered will can prepare itself (with personnel and technical-materials facilities) to resolve the incident in the shortest time and with the least possible risks. (author)

  16. Course of training in Specific internal dosimetry for the patient; Curso de capacitacion en dosimetria interna especifica para el paciente

    Energy Technology Data Exchange (ETDEWEB)

    Rojo, A.M.; Michelin, S.C. [Dosimetria Interna, Autoridad Regulatoria Nuclear, Av. Del Libertador 8250 CP (429BNP), Buenos Aires (Argentina); Gomez P, I.M. [Sociedad Argentina de Radioproteccion, Av. del Libertador 8250, Buenos Aires (Argentina)]. e-mail: arojo@cae.arn.gov.ar

    2006-07-01

    In this work the experience obtained in a course organized in Argentina to qualify professionals in the radiopharmaceutical dosimetry using the methodology MIRD and the patient's images is presented. The motivation to carry out it was based on the continuous development of new radiopharmaceuticals with therapeutic purposes that makes necessary the knowledge of the distribution of the absorbed dose to be able to establish the dose-response relationship. The main objective was the study of the biokinetic model and those techniques available that starting from images can contribute information of specific parameters of the patient to calculate with more accuracy the doses in the tumor and in different organs. In the design of the program of this course it was considered to approach the different focuses for the calculation of specific dose of the patient and includes the following topics: the patient's radiological protection, new concepts in damages by radiations (bystander effect), methodology for the internal dosimetry by radiopharmaceuticals, dosimetric systems (MIRD/ICRP), revision of the physical phantoms, design of kinetic studies, compartmental models, calculation tools and the demonstration of the programs SAAM and OLINDA; calculation of activity starting from the patient's images (planar and SPECT). Principles of the gamma camera: the dispersed radiation, calculation of the activity with planar images, the attenuation, correction of the dispersed radiation, collimation problems. SPECT: the common method of reconstruction, basic principles, method of filtered over head projection and iterative methods (MLEM/OSEM), measurement of the attenuation maps, problems of the penetration in the collimator (I-131, I-123), effects of partial volume, incorporation of corrections in an iterative reconstruction. Dosimetry in bone marrow, discussion of study cases of new radiopharmaceuticals. Internal dosimetry in small scale for electrons and photons. Perspectives of the Monte Carlo method in the internal dosimetry. Dose calculation with the LundAdose program of the 'Lund University'. The development of these theoretical practice activities including conferences of foreign experts and practices in reference centers of Argentina, took place in Buenos Aires in August, 2004 during one week on complete time. This was the mark for the conjunct work of professionals of different specialties (doctors, physical, biochemical) of the national and regional environment. The survey carried out at the end of this first course showed the interest for a continuity in the in agreement upgrade to the technological advances in this topic, what allows us to conclude that the formation of those involved professionals should be faced in the region countries in permanent form. (Author)

  17. Dosimetry in medical specialist in procedures of interventionist radiology; Dosimetria en medico especialista en procedimientos de radiologia intervencionista

    Energy Technology Data Exchange (ETDEWEB)

    Gaona, E. [Universidad Autonoma Metropolitana, Unidad Xochimilco, Calz. del Hueso 1100, Col. Villa Quietud, 04960 Mexico D. F. (Mexico); Vazquez V, J. A.; Rivera M, T. [IPN, Centro de Investigacion en Ciencia Aplicada y Tecnologia Avanzada, Av. Legaria 694, 11500 Mexico D. F. (Mexico); Izeta G, A. C. [Hospital Central Militar, Periferico y Av. Ejercito Nacional s/n, 11200 Mexico D. F. (Mexico); Azorin V, J. C. [Universidad de Guanajuato, Instituto de Fisica, Loma del Bosque 103, 37150 Leon, Guanajuato (Mexico); Arreola, M., E-mail: gaen1310@correo.xoc.uam.mx [Shands Hospital at University of Florida, Department of Radiology, PO Box 100374, Gainesville, FL 32610-0374 (United States)

    2014-08-15

    In this work are presented the experimental results of determining the dose in different body parts, measured by thermoluminescent dosimeters, to medical specialists of implantation procedures of definitive cardiac pacemaker. The medical personnel in ten intervention procedures were controlled according to the procedure type, pathological indication, fluoroscopy time and machine generating estimates of the patient doses. The doses to the extremities of the cardiologist were measured by means of thermoluminescent dosimeters (TLD). The domains of first level in the hand are in the index finger of the left and the right hand. The medium doses of the skin in the eyes, a report of the dose received during each type of intervention procedure in the glandular thyroid and fingers of the cardiologists is made. The results represent the integrated dose to the cardiologist, received during the implantation procedures of definitive cardiac pacemaker in the same patient. By a half time of detection of 70 minutes for patient, the half dose of the skin, received for the right and left hand, ascended to 1,4 mSv, under the glove. In conclusion, the dose average for the dosimeters of the thyroid gland and forehead was varied from 0,41 up to 1,14 mSv for study. The exposure to the X-rays is a topic to consider, more important every time on the development of systematic procedures little invasive, including the angiography, catheter, worker and patient. (Author)

  18. Tl dosimetry around equipment s for dental radiography; Dosimetria TLD en torno a equipos para radiografia dental

    Energy Technology Data Exchange (ETDEWEB)

    Medrano, E.; Robles G, M. A. [Universidad Autonoma de Zacatecas, Unidad Academica de Odontologia, Apdo. Postal 336, 98000 Zacatecas (Mexico); Vega C, H. R.; Letechipia de L, C.; Hernandez D, V. M., E-mail: edumeco@yahoo.com.mx [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas (Mexico)

    2014-08-15

    The ambient dose equivalent around X-rays units used in dentistry has been measured. The radiation that escapes of the tail stock of the X-rays equipment was also measured, and the dose in the surfaces of a polyethylene spherical mannequin and other of water, used to represent the patient and the operator, respectively. The study was realized with thermoluminescent dosimeters of the type 100. The operation conditions of the X-rays units were varied when the ambient dose equivalent was measured. In the other measurements the equipment s were operated to 70 k Vp and 8 m A. In the ambient dose equivalent was found asymmetry, likewise the due dose to the radiation that escapes of one of tail stocks was also asymmetric. The dose values in the mannequins went minors to the recommended reference values. (Author)

  19. Estimations of internal dosimetry: practical calculations of incorporated activity; Estimaciones de dosimetria interna: calculos practicos de actividad incorporada

    Energy Technology Data Exchange (ETDEWEB)

    Cortes C, A. [CNSNS, Dr. Barragan 779, 03020 Mexico D.F. (Mexico)

    2003-07-01

    The National Commission of Nuclear Security and Safeguards (CNSNS) carries out periodically measurements of corporal activity to Occupationally Exposed Personnel (POE) to determine that the received doses are in according to that settled down in the General Regulation of Radiological Security. In this work the results of the incorporated activity estimates starting from the results of the measurements that were carried out in the one CNSNS laboratory are presented, with which it should be determine lastly the internal dose. Its were used different methodologies to estimate the incorporated activity: estimate with isolated data, estimate with global data and method of the best estimate, demonstrating this last to be the more appropriate to determine the internal dose. (Author)

  20. A new method for dosimetry with films radiochromic; Un nuevo metodo para la dosimetria con peliculas radiocromica

    Energy Technology Data Exchange (ETDEWEB)

    Mendez Carot, I.

    2013-07-01

    in this paper a new method is presented and the results of the comparison between the calibration is summarized based on a planning reference and calibration obtained from the irradiated fragments measure different dose levels multichannel compare dosimetry based on the weighted average dosimetry described by Micke et al.(present in the FilmQAPro software) and, finally, show different results obtained with the method proposed in several applications clinics. (Author)

  1. Neutron dosimetry. Environmental monitoring in a BWR type reactor; Dosimetria de neutrones. Monitoreo ambiental en un reactor del tipo BWR

    Energy Technology Data Exchange (ETDEWEB)

    Tavera D, L; Camacho L, M E

    1991-01-15

    The measurements carried out on reactor dosimetry are applied mainly to the study on the effects of the radiation in 108 materials of the reactor; little is on the environmental dosimetry outside of the primary container of BWR reactors. In this work the application of a neutron spectrometer formed by plastic detectors of nuclear traces manufactured in the ININ, for the environmental monitoring in penetrations around the primary container of the unit I of the Laguna Verde central is presented. The neutron monitoring carries out with purposes of radiological protection, during the operational tests of the reactor. (Author)

  2. Dosimetry on the radiological risks prevention in radiotherapy; La dosimetria en la prevencion de riesgos radiologicos en radioterapia

    Energy Technology Data Exchange (ETDEWEB)

    Fornet R, O. M.; Perez G, F., E-mail: nuclear2@citmahlg.holguin.inf.cu [Delegacion Territorial del CITMA, Peralta 16 esq. P. Feria, Rpto. Peralta, 80400 Holguin (Cuba)

    2014-08-15

    Dosimetry in its various forms plays a determining role on the radiological risks prevention in radiotherapy. To prove this in this paper is shown an analysis based on the risk matrix method, how the dosimetry can influence in each stages of a radiotherapy service; installation and acceptance, operation, maintenance and calibration. For each one of these stages the role that can play is analyzed as either the initiating event of a radiological accident or limiting barrier of these events of the dosimetric processes used for the individual dosimetry, the area monitoring, fixed or portable, for radiation beam dosimetry and of the patients for a radiotherapy service with cobalt-therapy equipment. The result of the study shows that the application of a prospective approach in the role evaluation of dosimetry in the prevention and mitigation of the consequences of a radiological accident in radiotherapy is crucial and should be subject to permanent evaluation at each development stage of these services. (author)

  3. Statistical analysis of personal dosimetry of exposed workers; Analisis estadistico de la dosimetria personal de trabajadores expuestos

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez Munoz, F. J.; Alejo Luque, L.; Mas Munoz, I.; Serrada Hierro, A.

    2013-07-01

    The dosimetry centers accredited by the Nuclear Safety Council (CSN) normally report overcoming legal limits, or some fraction thereof, but do not provide comparative dosimetric criteria indicating if assigned to a given dose is large TPE or small relative to that of their peers. In order to help to resolve the difficulties mentioned ds, it has developed an application that statistically processes the dosimetric data provided by the National Dosimetry Center. (Author)

  4. Teflon pastille use in high dose dosimetry; Utilizacao de pastilhas de teflon em dosimetria de doses altas

    Energy Technology Data Exchange (ETDEWEB)

    Teixeira, Maria Ines [Associacao Educacional Nove de Julho (UNINOVE), Sao Paulo, SP (Brazil); Caldas, Linda V.E., E-mail: miteixeira@ipen.b, E-mail: lcaldas@ipen.b [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

    2011-10-26

    This paper study the Teflon, which is used as aglomerant in the confection of dosimetric pastilles, for the viabilization of this material as high dose dosimeter. This paper used the OSL technique for the characterization of dosimetric properties of Teflon. The doses-response curve has been obtained for {sup 60}Co radiation between 100 Gy and 50 kGy, and the OSL answer reproducibility. The preliminary results shown that the Teflon is a material which can be used for high dose dosimetry

  5. Thermoluminescent dosimetry in the radiodiagnostic area of the INNSZ; Dosimetria termoluminiscente en el area de radiodiagnostico del INNSZ

    Energy Technology Data Exchange (ETDEWEB)

    Azorin V, J C; Azorin N, J; Rivera M, T [Universidad Autonoma Metropolitana-Iztapalapa, 09340 Mexico D.F. (Mexico)

    1999-12-31

    During the year 1997 the Secretaria de Salud through the Direccion de Riesgos Radiologicos published the Mexican Official Standard about the medical diagnostic using X-rays in the Diario Oficial de la Federacion. They are of obligatory observance for all hospitals and radiological rooms which have medical diagnostic with X-ray equipment in the country. These standards were emitted with the purpose improve the conditions as for safety and radiological protection it is referred employing this type of ionizing radiation emitter equipment. Also it is presented the evaluation results about conditions existing about in thirteen X-ray medical diagnostic rooms in the Instituto Nacional de la Nutricion with the purpose of providing the radiological protection means toward the occupationally exposure personnel. It was realized measurements of each one of the blinding barriers for the X-ray equipment and it was suggested the appointments arrangement. (Author)

  6. Un documento inédito de 1494 sobre Abraham Seneor y rabí Meir Melamed

    Directory of Open Access Journals (Sweden)

    Ana María López Álvarez

    2018-06-01

    Full Text Available This article presents the study and the transcription of a document belonging to the Sephardic Museum in Toledo, acquired by the Association of the Friends of the Museum, which describes the proceedings carried out in 1494 by the tax collector don Gonzalo Blaço, a native of Seville and resident in Jerez de la Frontera, on the properties owned by don Abraham Seneor, his son Salomón and his son-in-law rabbi Meir Melamed in Jerez de la Frontera and Carmona.

  7. Poli representación de consultas borrosas para la extracción masiva de documentos en internet

    OpenAIRE

    Ruiz Morilla, José Joaquín

    2016-01-01

    Los sistemas de recuperación de información comenzaron accediendo a pequeñas fuentes de información, pero actualmente este concepto ha evolucionado considerablemente con la aparición de Internet. Hoy en día, una gran cantidad de la información en Internet es accesible mediante diversas herramientas como buscadores (Yahoo, Google, …), aunque hay parte de esta información que no es accesible para las herramientas comentadas. Otra de las desventajas para acceder a estas grandes masas de informac...

  8. Dos documentos inéditos sobre el batallón auxiliar y su estado en 1810

    Directory of Open Access Journals (Sweden)

    Sergio Elías Ortíz

    1963-03-01

    Full Text Available Una de tantas transformaciones como se operaron en la máquina político-administrativa del Virreynato de Santafé de Bogptá, a raíz del golpe revolucionario del 20 de julio ge 1810, fue el traspaso de mandos de los cuerpos militares de la capital de manos de los jefes reaccionarios a las de quienes gozaban de la confianza del pueblo.

  9. La historia de la colonia Lepida-Celsa según sus documentos numismáticos: su ceca imperial

    Directory of Open Access Journals (Sweden)

    García-Bellido, M. Paz

    2003-12-01

    Full Text Available The issues of Colonia Lepida allow us to propose the years 48-87 B.C. as its foundation date. The city, previously known by the Iberian name of Celsa, was changed to Lepida probably as a punishment for its support to the Pompeyan party. On 36 B.C. the colony regains its name Celsa. In 19 B.C. Agrippa stablishes here as imperial mint for aurei and denarii that had previously been adscribed to Caesarugusta, even though this city was then not yet founded. Judging by the circulation coinage and by the heavy metrology which lasts until Augustan times. Lepida seems to have coined bronze for military needs since Pompeyan issues.Las emisiones de Colonia Lepida permiten proponer el año 48-87 a.C. como la fecha de fundación de la colonia e interpretar la abolición del nombre de la ciudad ibérica Celsa como un castigo por su adhesión al bando pompeyano. En el 36 la ciudad recupera su nombre Celsa. En el 19 a.C. Agripa debe establecer en la colonia una ceca imperial que habíamos adscrito a Caesaraugusta, ciudad que todavía no estaba fundada, y provocar con ello una gran eclosión urbanística y política de Colonia Celsa. A juzgar por la circulación monetaria y la metrología uncial que se mantendrá hasta tiempos de Augusto, la ciudad parece, ya desde sus emisiones bilingües pompeyanas, haber abastecido de numerario de bronce a las tropas.

  10. Documentos sobre el X Congreso Nacional de la CTC en 1950 y la persecución sindical en Colombia

    Directory of Open Access Journals (Sweden)

    Eduardo Saenz Rovner

    1991-01-01

    Full Text Available En 1949, los Estado Unidos, como parte de su política anticomunista y antisindical durante la Guerra Fría, presionaron al Ministerio del Trabajo de Colombia, requiriéndole que removiese a aquellos líderes de la Confederación de Trabajadores de Colombia (CTC que el Departamento de Estado norteamericano consideraba comunistas. Ya que el FBI tenía agentes en Colombia recogiendo información sobre las vidas y actividades de los "comunistas" -reales o imaginarios-, era fácil para los norteamericanos señalar a quienes querían ver perseguidos. El Ministerio conservador no quiso ayudar directamente a la Embajada, argumentando con buenas razones, que el Partido Liberal era el que tenía la influencia sobre las facciones "moderadas'' dentro de la CTC. El embajador Willard Beaulac se puso entonces en contacto con el político Carlos Lleras Restrepo y le solicitó que se encargase de coordinar la expulsión de los líderes izquierdistas de la Confederación.

  11. Estructura del Sistema de Gestión Integral de Documentos de archivo [SiGeID 1.0

    Directory of Open Access Journals (Sweden)

    Dominica Legañoa Ferrá

    2012-08-01

    Full Text Available The new context imposes on organizations the vital necessity of having appropriate communication infrastructures that allow them to get actual and enough knowledge about their environment. This article seeks to show the organizational structure of the Integral Management System for Archive Documents SiGeID (1.0, as a computer tool helping the managerial organizations in Camagüey, Cuba, to improve their documents management processes. This tool in divided into three modules: Documental Management and Security, Archive Management and Management and Settings. Its functional and non- functional requirements are also kept in mind.

  12. La inscripción con letras de bronce y otros documentos epigráficos del foro de Segobriga

    Directory of Open Access Journals (Sweden)

    Abascal, Juan Manuel

    2001-12-01

    Full Text Available The Roman forum of Segobriga (prov. Cuenca, Spain was paved with limestone slabs with an inscription for bronze letters at the begining of the Principate. The text mentions the donors of the pavement and helps to understand better other inscriptions belonging to the adjacent area of the city.El foro de Segobriga estuvo pavimentado con losas calizas sobre las que se grabó una gran inscripción para letras de bronce a comienzos del Principado; el epígrafe alude a la donación de este pavimento y el hallazgo permite dar sentido a otras inscripciones de la misma zona de la ciudad.

  13. DSpace como herramienta para un repositorio de documentos administrativos en la Universidad Nacional Experimental del Táchira

    Directory of Open Access Journals (Sweden)

    Jose Texier

    2013-05-01

    Full Text Available The administrative digital document repositories allow an organization or institution to manage an automated production. This article aims to describe, roughly, a proposal to implement a Repository Administrative Documents in The Universidad Nacional Experimental del Táchira (REDAUNET by DSpace tool. The methodology for developing the proposal included: a a diagnosis at the University through a questionnaire to know what and how to preserve administrative documents, and b the design of the repository for cataloging and preservation of documents from DSpace software suitable with Venezuelan state laws and regulations of the University. The results indicate that the REDAUNET has six types of administrative documents (acts, records, memos, official letters, resolutions and legal that contain metadata to identify and locate these documents properly. It also created a documentation for installation, maintenance and development of software platform REDAUNET. This article will provide a contribution to the area of digital repositories, especially in the administrative and be a model for institutions to manage and preserve their documents.

  14. DOCUMENTO: DESARROLLO COMUNITARIO: UNA EXPERIENCIA INTERDISCIPLINARIA. ESTUDIOS DE CASO BARRIO SAN FRANCICO DE LA CIUDAD DE CARTAGENA DE INDIAS, COLOMBIA.

    Directory of Open Access Journals (Sweden)

    Paulina Rondón de Dager

    2001-08-01

    Full Text Available La complejidad de la sociedad actual exige la formación de profesionales con una visión holística de la realidad social en la cual intervienen, lo que hace necesario que la Universidad proporcione espacios que permitan a los estudiantes conocer, indagar, analizar fenómenos particulares que los lleven a diseñar, ejecutar y evaluar proyectos de desarrollo social que respondan a las necesidades de la comunidad. Respondiendo a esta premisa y a la misión de la Universidad se ha iniciado una experiencia pedagógica interdisciplinaria entre los programas de Ingeniería Civil y Trabajo Social de la Universidad de Cartagena y Arquitectura de la Universidad de San Buenaventura en la cual se intenta estructurar proceso que conjugue la investigación, docencia y extensión a partir de la articulación de las prácticas de los estudiantes de las disciplinas mencionadas.

  15. Gadamer, O’Gorman, Levi. Combates contra el neopositivismo historiográfico y contra el fetiche del documento

    Directory of Open Access Journals (Sweden)

    Morelos Torres Aguilar

    2014-01-01

    Full Text Available El artículo analiza críticamente, a partir de las consideraciones de Giovanni Levi, Hans-Georg Gadamer y Edmundo O’Gorman, la manera en que los historiadores aprehenden los acontecimientos y el procedimiento mediante el cual obtienen y utilizan sus fuentes. Las ideas de estos tres pensadores cuestionan, desde distintas perspectivas, la preeminencia de una heurística basada sólo en la afanosa búsqueda de la verdad, característica de la escuela científica alemana y el positivismo, corrientes ambas del siglo XIX; proponen en cambio, como alternativa que mucho debe a Ser y tiempo de Heidegger, la comprensión e interpretación de los procesos y los sujetos históricos, como una forma adecuada de explicación histórica. The article critically analyzes, from the considerations of Giovanni Levi, Hans-Georg Gadamer and Edmundo O’Gorman, the way in which the historians apprehend the events and the procedure by means of which they obtain and use his sources. The ideas of these three thinkers question, from different perspectives, the preeminence of a heuristic based only on the eager search of the truth, characteristic of the scientific german school and the positivism, currents both of the 19th century; they propose on the other hand, as alternative that much owes to Being and time of Heidegger, the comprehension and interpretation of the processes and the historical subjects, as a suitable form of historical explanation.

  16. El Documento de las Américas: Buenas Prácticas Clínicas para Autoridades Reguladoras

    OpenAIRE

    Ricardo Palacios

    2009-01-01

    En 1996, cuando se adoptaron las Normas de Buenas Prácticas Clínicas de la Conferencia Internacional de Armonización (ICH, por su sigla en inglés), se proyectó facilitar la acción de autoridades reguladoras sobre los diferentes actores de la investigación clínica. Estas normas fueron creadas e incorporadas a la legislación de las tres regiones del mundo (Estados Unidos, Unión Europea y Japón) que producen la mayor parte de medicamentos, vacunas, biológicos, pruebas diagnósticas y equipos méd...

  17. Algunos otros documentos e indicaciones de utilidad para la historia de las Ciencias Naturales en España

    Directory of Open Access Journals (Sweden)

    Laínz S.J., Manuel

    2002-06-01

    Full Text Available To end my recent and modest contributions to the history of Spanish Natural Sciences in the 20th Century, I refer, basically, to the epistolary correspondence of Navás to C. (and I. Bolívar I could gather. It is of not little interest, notwithstanding its reduced amount.Como punto final de mis aportaciones de los últimos años -modestas- a la historia de las Ciencias Naturales patrias en el pasado siglo, aquí me refiero, fundamentalmente, a las comunicaciones epistolares que pude allegar de Navás a los Bolívar -de no poco interés, en su menguado conjunto.

  18. Los documentos notariales como fuente para la historia empresarial: un ejemplo de aproximación empírica

    Directory of Open Access Journals (Sweden)

    Victor Alvarez .

    2013-07-01

    Full Text Available Ilustra el potencial de las fuentes notariales para conformación de la historia empresarial colombiana. El seguimiento minucioso que el autor hace de connotados empresarios colombianos, como José María "Pepe" Sierra a través de notarías de diferentes ciudades colombianas permite desentrañar los modelos de gerencia y administración que los líderes empresariales colombianos aplicaron

  19. Arquitectura y Documentos. Mapa documental para el estudio de la arquitectura y las obras de Carlos Arniches

    Directory of Open Access Journals (Sweden)

    Concha Diez-Pastor

    2017-10-01

    dels fets. Investigacions prèvies sobre aquests arquitectes van posar de manifest la rellevància de l’autoria a l’hora d’analitzar les obres d’arquitectura, suggerint la conveniència d’aprofundir en aquella via d’investigació que, finalment, va abastar gairebé la totalitat de la seva obra. Abans de 1936, Arncihes i Domínguez havien treballat en algunes obres com a socis. No obstant això, com demostren les proves i documents d’arxiu, no totes les seves obres van ser conjuntes, i les que ho bvan ser no sempre es van atribuir degudament al seu autor real, com es dedueix dels documents. El context, clau per entendre el material documental i d’arxiu recaptat, i la exhaustiva avaluació que inclou els punts de vista històric i cultural, desvetllen l’autoria real, permetent assentar els fets i preservar els seus valors i el seu abast històric..

  20. Determination of Methylmercury Traces in Biological Matrix: Chemical Extraction and Nuclear Quantification with the Neutron Activation Analysis Technique; Determinacion de Trazas de Metilmercurio en Matriz Biologica: Extracion Quimica y Cuantificacion Mediante la Tecnica Nuclear de Analisis por Activacion Neutronica (AANI)

    Energy Technology Data Exchange (ETDEWEB)

    Soldati, A L [Instituto Balseiro, Universidad Nacional de Cuyo, Centro Atomico Bariloche (Argentina)

    2002-07-01

    Mercury is present in the environment as a result of the human and natural activities.The total amount of Hg present in the biosphere has been incremented three times since the industrial era, and now it is affecting in a global sense all the ecosystem.One of the main entrance of Hg in the human diet is the consumption of fish and other marine creatures.Most of the ingested Hg is mono methylmercury (MeHg), which is one of the most toxic forms in which this element could be found because it crosses membranes.Since the toxicity levels are low, the determination of concentrations of total Hg and Me Hg require very careful sampling, sample conditioning and analytical procedures to prevent either losses or contamination, or the degradation of the Hg species.In this work, we implemented a chemical Me Hg extraction procedure, using a ionic exchange resin, with three different types of fish tissue: muscle, liver and hepato pancreas.After Me Hg extraction, the determination and quantification was made by Instrumental Neutron Activation Analysis, by measuring the {sup 197} Au, y el {sup 203} Tl deexcitation s, created through the radioactive decay of the isotopes {sup 197} Hg y {sup 203} Hg.The influence of several parameters on the overall extraction process, such as velocity of passage through the ionic exchange column and the acid concentration used in the extraction was evaluated.Regarding the INAA determinations, a choice was made for the irradiation, decay and counting times, neutron and gamma doses, and the counting geometry The detection limit found for this technique (dry weight) is 140 pg MeHg/g. The Hg contents of the muscle samples were measured with the 279 keV emission of the product of the {sup 202} Hg(n,g){sup 203} Hg reaction, with a recovery of (100 {+-} 13)%. Liver and Hepato pancreas samples were measured with the 77 keV gamma emission of the {sup 197} Hg, checking this result with the 67 y 69 keV X emissions from the same isotope.The liver samples needed an extra vacuum filtering process during the extraction.The filtering process was implemented and with no significant effects of losses or contamination.The recoveries obtained for both types of samples are close to 100%. However, due to the lower Hg contents in these samples, the uncertainties are higher than in the muscle samples measurements (20% for livers and 50% for hepato pancreas) because the Me Hg amounts analyzed are near the detection limit of this technique.

  1. {sup 222} Rn determination and physicochemical characteristic and biological in aquifers in the Toluca Valley; Determinacion de {sup 222} Rn y caracteristicas fisicoquimicas y biologicas en acuiferos del Valle de Toluca

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez A, A

    1998-10-01

    Concentration levels of {sup 222} Rn and {sup 226} Rn have been analyzed in water samples from boreholes belonging to the drinking water supply system around Toluca, Mexico. The {sup 222} Rn source is the decay of {sup 226} Rn within the solid matrix of the aquifer. The study was performed during the dry and rainy seasons. {sup 222} Rn concentration was determined by the liquid scintillation technique, {sup 226} Rn was determined by gamma spectrometry, the physicochemical parameters and bacteriological analysis were performed by conventional chemical techniques. Solubilized trace elements were determined by Inductively Coupled Plasma - Mass Spectrometry (Icp-Ms). The radon level fluctuations at the boreholes in Toluca city and Almoloya spring indicated differences in the radon content. At borehole Lodos Prietos 2, the temperature and radon level were systematically the highest in comparison with the other boreholes and the spring indicating a contribution of a regional flow to the water of this particular borehole. The result for {sup 226} Rn, the average {sup 222} Rn observed during the sampling period, no correspondence occurs between the radium and the radon content indicating that, radon is not supported by radium, but is incorporated into the water through fissures in the rocks in contact with the water. The radon levels obtained in house faucets which water is supplied by boreholes decrease as a function of the distance from the source borehole to the house. With the chemical composition of each one of the studied boreholes and spring a Piper diagram was draw indicating the kind of water. The boreholes and spring can be classified as bicarbonate calcium/magnesium. Almost no fluctuation on time was observed in the chemical species and trace elements only a slight increase was observed at the end of the rain season. At Almoloya, spring pollution with coliform bacteria and nitrates showed an anthropogenic contribution to the water deterioration probable and fertilizers and detritus. Most of the studied water samples were potable, however at Lodos Prietos 2 borehole the fluorine concentration was higher than the established norm. (Author)

  2. Determination of phosphorus and calcium in biological samples by activation with 14 MeV neutrons; Determinacao de fosforo e calcio em amostras biologicas por ativacao com neutrons de 14 MeV

    Energy Technology Data Exchange (ETDEWEB)

    Berretta, Jose Roberto

    1995-07-01

    Analytical methods for phosphorus and calcium in biological samples by means of activation with 14 MeV neutrons, using the Van de Graaff accelerator from the Instituto de Pesquisas Energeticas e Nucleares, SP, Brazil are developed. For phosphorus analysis, powder samples were pressed into pellets, weighed and transferred to polyethylene plastic envelopes. The pellets with cadmium shielding were irradiated under a fast neutron flux for 5 to 10 minutes, and further counted in a HPGe detector for 5 minutes. Calcium analysis was performed by cyclic irradiation. Samples were irradiated for 10 minutes. After a decay time of 2 minutes, gamma counting was performed for 10 minutes. After a decay time of 2 minutes, a new irradiation ws made. The irradiation cycle was repeated 5 times and the counting spectrum obtained in each cycle was accumulated in the multi channel analyser. The variation of the neutron flux was followed by using a BF{sub 3} detector calibrated with and aluminium monitor. By means of the gamma spectrum and the neutron counting of the BF{sub 3} detector it was possible to estimate phosphorus and calcium concentrations in the sample analyzed. The methods were checked in the reference samples from the International Atomic Energy Agency and in commercial samples of powder milk, fertilizer and animal bone. Phosphorus contents in bone (A3/74) and milk (A-11) reference materials were (15.6 +- 1.8%) and (0.9 +- 0.1)%, respectively. These values are in good agreement to the certified values (15.5 +- 0.5)% and (0.910 +- 0.102)%, respectively. Calcium analysis carried out in bone (A3/74) presented a value of (31.8+-4.1)% and the certified value was of (31.3 +- 0.3)%. Detection limits for phosphorus and calcium were determined in different analyzed samples. The agreement of the results obtained with the certified values confirmed the suitability of the methods for phosphorus and calcium analysis. The methods are fast and laborious chemical procedures are not required. (author)

  3. Determination of {sup 222}Rn and its physico-chemical and biological characteristics in aquifers of Toluca valley; Determinacion de {sup 222}Rn y caracteristicas fisicoquimicas y biologicas en acuiferos del Valle de Toluca

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez, A.; Aranda, P.; Ceballos, S.; Cruz, D.; Jauregui, B.; Lopez, R.; Pena, P.; Salazar, S.; Segovia, N.; Tamez, E. [Instituto nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

    1997-07-01

    In this work it is realized a geochemical study which includes the evaluation of {sup 222} Rn concentration in drinking water wells at Toluca city and a spring water of Almoloya de Juarez municipality at State of mexico. the same is studied about evolution of {sup 222} Rn concentration in water of the hydrating which supply it to those wells. the geochemical evaluation also covers the determination of major and minor elements or trace and the biological analysis of water. The study includes two seasonal cycles, the low water mark one and other the rainy for being able to evaluate the aquifers reloading effects in the water composition. (Author)

  4. Biological distribution of [{sup 18}F-FDG] using reactor produced [{sup 18}F]; Distribucion biologica del {sup 18}F-Fluordeoxiglucosa utilizando [{sup 18}F] producido en reactor

    Energy Technology Data Exchange (ETDEWEB)

    Sierralta, P; Massardo, T [Centro de Medicina Nuclear. Hospital Clinico Universidad de Chile, Santiago (Chile); Gil, M C [CGM Nuclear, Santiago (Chile); Gonzalez, P [Centro de Medicina Nuclear. Hospital Clinico Universidad de Chile, Santiago (Chile); Chandia, M; Godoy, N; Troncoso, F [Comision Chilena de Energia Nuclear, Cen La Reina, Santiago (Chile)

    2002-12-01

    The animal model that relates biodistribution of a substance is fundamental prior to using it in human beings. For the evaluation of myocardial viability after a recent MI, the use of reactor produced [{sup 18}F]-FDG (a radiotracer usually obtained in Cyclotron) is proposed, production of which has never been attempted in our country. Specific Activities founded in the different tissues after injection of this radiotracer in an animal model were compared with those obtained by other authors with cyclotron [{sup 18}F]-FDG. No statistically significant differences in the critical organs were found. Hence, reactor produced [{sup 18}F]-FDG is a useful radiopharmaceutical in cardiac cellular metabolism assessment (author)

  5. Impacts of offshore oil industry on the marine biota and mitigating measures; Impactos das atividades offshore da industria do petroleo sobre a comunidade biologica marinha e as medidas mitigadoras

    Energy Technology Data Exchange (ETDEWEB)

    Cotta, Patricia S. [PETROBRAS, Rio de Janeiro, RJ (Brazil). Unidade de Negocio SMS

    2004-07-01

    The growth of industrialization is generating an increase in environmental change, mainly in the marine environment.The petroleum industry is performing a great search for petroleum fields resulting in a transference from land activity to the sea and to deeper water layers (offshore). The offshore exploration in Brazil corresponds to 80% of the national petroleum production. This increasing production is raising questions about the impacts caused by its activities on aquatic biological communities. The potentially impactant activities of the petroleum industry are oil exploration, drilling and production. To mitigate and to accompany the potential environment impacts of its activities, the petroleum industry is implementing environmental monitoring projects whose guidelines directives are established by the responsible environmental agency. These projects aim at accompanying the effects of the continuos discharge of effluents on the local oceanic ecosystem through environmental characterization before, during and after the production activities, physical and chemical characterizations of sea water, qualitative and quantitative analyses of the biological monitoring, accompaniment of the environmental conditions during all oil rig activity and characterization of produced water, through physical, chemical and eco toxicological assays. (author)

  6. [THE SPIRIT CHOLESTEROL, BIOLOGICA L ROLE AT STAGES OF PHYLOGENESIS, MECHANISMS OF INHIBITION OF SYNTHESIS OF STEROL BY STATINS, FACTORS OF PHARMACOGENOMICS AND DIAGNOSTIC SIGNIFICANCE OF CHOLESTEROL OF LIPOPROTEINS OF LOW DENSITY].

    Science.gov (United States)

    Titov, V N; Kotlovskii, M Yu; Pokrovskii, A A; Kotlovskaia, O S; Osedko, A V; Titova, N M; Kotlovskii, Yu V; Digaii, A M

    2015-04-01

    The hypolipidemic effect of statins is realized by inhibition of synthesis of local pool of cholesterol spirit in endoplasmic net of hepatocytes. The cholesterol spirit covers all hydrophobic medium of triglycerides with polar mono layer of phosphatidylcholines and cholesterol spirit prior to secretion of lipoproteins of very low density into hydrophilic medium. The lesser mono layer between lipase enzyme and triglycerides substrate contains of cholesterol spirit the higher are the parameters of hydrolysis of palmitic and oleic lipoproteins of very low density. The sequence of effect of statins is as follows: blocking of synthesis in hepatocytes and decreasing of content of unesterified cholesterol spirit in blood plasma; activation of hydrolysis of triglycerides in palmitic and oleic lipoproteins of very low density; formation of ligand lipoproteins of very low density and their absorption by cells by force of apoB-100 endocytosis; decreasing in blood of content of polyenoic fatty acids, equimolar esterified by cholesterol spirit, polyethers of cholesterol spirit and decreasing of level of cholesterol spirit-lipoproteins of very low density. There is no way to eliminate aphysiological effect of disordered biological function of trophology (nutrition) on metabolism of fatty acids in population by means of pharmaceuticals intake. It is necessary to eliminate aphysiological effect of environment. To decrease rate of diseases of cardiovascular system one has to decrease in food content of saturated fatty acids and in the first instance palmitic saturated fatty acid, trans-form fatty acid, palmitoleic fatty acids up to physiological values and increase to the same degree the content of polyenoic fatty acids. The saturated fatty acids block absorption of polyenoic fatty acids by cells. The atherosclerosis is a deficiency of polyenoic fatty acids under surplus of palmitic saturated fatty acid.

  7. Biological fixation and nitrogen transfer by three legume species in mango and soursop organic orchards;Fixacao biologica e transferencia de nitrogenio por leguminosas em pomar organico de mangueira e gravioleira

    Energy Technology Data Exchange (ETDEWEB)

    Paulino, Gleicia Miranda; Barroso, Deborah Guerra, E-mail: gleiciamiranda@yahoo.com.b, E-mail: deborah@uenf.b [Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ (Brazil). Dept. de Fitotecnia; Alves, Bruno Jose Rodrigues; Urquiaga, Segundo; Espindola, Jose Antonio Azevedo, E-mail: bruno@cnpab.embrapa.b, E-mail: urquiaga@cnpab.embrapa.b, E-mail: jose@cnpab.embrapa.b [EMBRAPA Agrobiologia, Seropedica, RJ (Brazil)

    2009-12-15

    The objective of this work was to evaluate the biological nitrogen fixation (BNF) and the N transfer derived from BNF of the legume species - Gliricidia sepium (gliricidia), Crotalaria juncea (sunnhemp) and Cajanus cajan (pigeon pea) - for an intercropped organic orchard with mango and soursop, through the {sup 15}N natural abundance method. The following inter cropping systems were evaluated: mango and soursop with gliricidia; mango and soursop with sunnhemp; mango and soursop with pigeon pea; and mango and soursop as control. Gliricidia showed the highest BNF potential (80%) , followed by sunnhemp (64.5%) and pigeon pea (45%). After two sunnhemp prunes, 149.5 kg ha{sup -1} of N per year were supplied, with 96.5 kg derived from BNF. After three annual prunes, gliricidia supplied 56.4 and 80.3 kg ha{sup -1} of N per year, with 45 and 64 kg derived from BNF, in two consecutive years. The quantity of N supplied to the system was higher than the mango and soursop requirements. Variations in the natural abundance of {sup 15}N were found only in soursop leaves. Gliricidia and sunnhemp were prominent in N transfer, with approximately 22.5 and 40% respectively. Green manuring using gliricidia permits fractioning of the N supply, which is an advantage in N obtention by the fruit trees (author)

  8. Biological and ecological characterization of two mites (Tetranychus Urticae and Phytoseiulus Persimilis) occurring in some agro-ecosystems; Caratterizzazione biologica ed ecologica di due acari (Tetranichus Urticae e Phytoseiulus Persimilis) interagenti in alcuni ecosistemi agrari

    Energy Technology Data Exchange (ETDEWEB)

    Calvitti, M [ENEA, Centro Ricerche Casaccia, Roma (Italy). Dip. Innovazione

    1995-12-01

    This work is a brief review of the actual knowledge about biological and ecological characteristics of two species of mites: Tetranychus urticae Koch (Acarina Tetranychidae) (two-spotted spider mite) and the predaceous mite Phytoseiulus persimilis Athias Henriot (Acarina Phytoseiidae). Success obtained in biological control of spider mite, by mass release of P. persimilis, has increased the interest in biological and ecological study of these mites. Particularly, the following biological and ecological aspects of both P. persimilis and T. urticae are hereby discussed: reproductive biology; population dynamics (spider mites outbreaks) and natural regulation of the trophic interaction; feeding behaviour; biological control of two-spotted spider mite by P. persimilis. In this report experimental data obtained in laboratory have been integrated with bibliographic information concerning studies produced in natural conditions.

  9. Modelling and simulation of the phased feeding process with biological elimination of nitrogen and phosphorus; Modelizacion y simulacion del proceso de alimentacion escalonada con eliminacion biologica de nitrogeno y fosforo

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez, J. C.; Jorda, J. R.; Cortacans, J. A. [Infilco Espanola, S. A. Madrid (Spain)

    2000-07-01

    It is set forth experimental results on an Alternative Phase Step Feed Pilot Plant (Nitrogen and Phosphorus removal) placed in San Agustin de Guadalix (Madrid CYII) WWTP. Results on IAWQ Model N. 2 calibration and evaluation of its predictive capacity are also included. Finally, it is introduced the Alphasin, Process Simulator that INFILCO uses as a design and assessment tool on Alpha Process Plants with organic matter removal exclusively or incorporating nutrients (Nitrogen and/or Phosphorus) removal. (Author) 8 refs.

  10. Quality in the chemical analysis of biological matrices by fluorescence X-ray by energy dispersive; Qualidade nas analises quimicas de matrizes biologicas pela fluorescencia de raios-X por dispersao de energia

    Energy Technology Data Exchange (ETDEWEB)

    Sousa, Evely E. de; Paiva, Jose Daniel S. de; Franca, Elvis J. de; Almeida, Macio E.S.; Cantinha, Rebeca S.; Hazin, Clovis A., E-mail: evelysousa_182@hotmail.com, E-mail: ejfranca@cnen.gov.br [Centro Regional de Ciencias Nucleares do Nordeste (CRCN-NE/CNEN-PE), Recife, PE (Brazil)

    2013-07-01

    The aim of this study was to obtain multielement analytical curves of high analytical rigor to the analysis of biological matrices by the technique of fluorescence x-ray energy dispersive - EDXRF. Calibration curves were constructed from the reference materials IAEA 140, IAEA 155, IAEA V8, V10 to the International Atomic Energy Agency - IAEA, and SRM1515, SRM 1547, SRM 1570a, SRM 1573a, SEM 1567a, to the National Institute of Standards and Technology - NIST. After energy calibration, all samples were subjected to vacuum to the analyzes by 100 seconds for each group of chemical elements. The voltages used were respectively 15 keV for chemical elements with less than atomic number 22 and 50 keV for the others. After the construction of the curves, the analytical quality was assessed by the analysis of a portion-test of the reference material SRM 2976, also produced by NIST. Based on the number of certified reference materials used for construction of calibration curves in this work, quality analytical protocol was originated with considerable reliability for quantification of chemical elements in biological samples by EDXR.

  11. Inorganic composition determination and evaluation of the biological activity of Peperomia pellucida in the Aspergillus flavus growth; Estudo da composicao inorganica e avaliacao da atividade biologica de Peperomia pellucida no crescimento de Aspergillus flavus

    Energy Technology Data Exchange (ETDEWEB)

    Sussa, Fabio Vitorio

    2011-07-01

    In recent decades, there has been a great advancement in research in developing drugs from plants. Nevertheless, little significant care exists in the literature about the stable concentration of elements, as well as the activity concentration of '2{sup 38}U and {sup 232}Th decay products in plants used for this purpose in Brazil. The presence of stable elements and radionuclides in plants constitutes the pathway for their migration to humans, via uptake of tea or remedies made with medicinal herbs. Peperomia pellucida, whose popular name is 'erva de jabuti', is a plant known by its medicinal usages, such as healing and analgesic properties plus antibacterial and antifungal activities against food fungi. In this study, the elemental composition of Peperomia pellucida and surrounding soil samples collected in the Botanical Garden in Rio de Janeiro was determined; the elemental concentration in the alcoholic extract and infusion processes of dry plants was also determined. The elemental concentration of As, Ba, Br, Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sb, Sc, Sm, Ta, Tb, Th, U, Yb and Zn was determined in the leaves, aerial parts, including leaves, stems and roots of Peperomia pellucida, in their extracts obtained by maceration and infusions and in the surrounding soil by the Instrumental Neutron Activation Analysis (INAA). The analytical methodology used to determine the elements Cd, Hg and Pb was the Atomic Absorption Spectrometry (AAS); the activities of {sup 226}Ra, {sup 228}Ra and {sup 210}Pb were carried out by gross alpha and beta counting, after radiochemical separation. The quality of the obtained results was assured by the analyses of the certified reference materials IAEA-336 Lichen, IAEA-Soil-7, IAEA-326 Radionuclides in soil, NIST 1515 Apple Leaves and NIST 1542 Peach Leaves. The relative standard deviations and the relative errors obtained in these analyses indicated good precision and accuracy of the results. The essential oil, ethanolic and hexane extracts of Peperomia pellucida were tested for antifungal activity against Aspergillus flavus in vitro on Petri plates. The antifungal activity was based on the inhibition zone and IC{sub 50} values against the pathogen on Petri plates assays. Also, the essential oil chemical composition was determined by GC-MS. (author)

  12. Synthesis and characterization of Tin / Titanium mixed oxide nanoparticles doped with lanthanide for biomarking; Sintese e caracterizacao de nanoparticulas de oxido misto de estanho/titanio dopadas com lantanideos para marcacao biologica

    Energy Technology Data Exchange (ETDEWEB)

    Paganini, Paula Pinheiro

    2012-07-01

    This work presents the synthesis, characterization and photo luminescent study of tin and titanium mixed oxide nanoparticles doped with europium, terbium and neodymium to be used with luminescent markers on biological systems. The syntheses were done by co-precipitation, protein sol-gel and Pechini methods and the nanoparticles were characterized by infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, X-ray diffraction and X-ray absorption spectroscopy. The photo luminescent properties studies were conducted for luminophores doped with europium, terbium and neodymium synthesized by coprecipitation method. For luminophore doped with europium it was possible to calculate the intensity parameters and quantum yield and it showed satisfactory results. In the case of biological system marking it was necessary the functionalization of these particles to allow them to bind to the biological part to be studied. So the nanoparticles were functionalized by microwave and Stoeber methods and characterized by infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray diffraction obtaining qualitative response of functionalization efficacy. The ninhydrin spectroscopic method was used for quantification of luminophores functionalization. The photo luminescent studies of functionalized particles demonstrate the potential applying of these luminophores as luminescent markers. (author)

  13. Synthesis of hydroxyapatite with the use of calcium carbonate as of the biological precursor; Sintese de hidroxiapatita com o uso de carbonato de calcio de origem biologica como precurssor

    Energy Technology Data Exchange (ETDEWEB)

    Aguilar, M.S.; Di Lello, B.C.; Queiroz, F.; Campos, N.C., E-mail: marilzasa@oi.com.br [Universidade Estacio de Sa (UESA), Rio de Janeiro, RJ (Brazil). Departamento de Engenharia; Campos, J.B. [Universidade do Estado do Rio de Janeiro (PPGEM/UERJ), RJ (Brazil). Programa de Pos-Graduacao em Engenharia Mecanica

    2014-07-01

    This work describes the synthesis of hydroxyapatite from calcium from biological materials such as shells carbonate. In the syntheses performed, the calcium carbonate of biological origin was used as the precursor and through a precipitation reaction with phosphoric acid, was converted into calcium hydroxide. Sequentially, the precipitate was aged, filtered, washed, dried and calcined, and then transformed into hydroxyapatite. The characterization of the powders was performed by X-DR (X-ray diffraction) and SEM (scanning electron microscopy). DR-X as determined hydroxyapatite calcium phosphate phase calcium. SEM revealed a morphology of finely divided particles. The method B.E.T. showed values of specific area and volume of micropores consistent with the literature. The results of the characterizations proved feasible to use for obtaining biological hydroxyapatite materials used in the reaction conditions.(author)

  14. COD biological removal and biogas production in anaerobic reactor treating cassava wastewater industry; Remocao biologica de DQO e producao de biogas em reator anaerobio tratando efluente de fecularia de madioca

    Energy Technology Data Exchange (ETDEWEB)

    Watthier, Elisangela [Universidade Estadual do Oeste do Parana (UNIOESTE), Cascavel, PR (Brazil). Curso de Mestrado em Engenharia Agricola; Andreani, Cristiane Lurdes [Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Brasilia, DF (Brazil); Gomes, Simone Damasceno [Universidade Estadual do Oeste do Parana (PGEAGRI/UNIOESTE), Cascavel, PR (Brazil). Programa de Pos-Graduacao em Engenharia Agricola; Moreschi, Roberson; Rufino, Mauricio de Oliveira [Universidade Estadual do Oeste do Parana (UNIOESTE), Cascavel, PR (Brazil). Curso de Engenharia Agricola

    2010-07-01

    The effluent from the cassava industry cause damage to the environment if released without treatment. One alternative is the implementation of anaerobic reactors, which also add value through the production of biogas. The support means increases the contact surface of micro-organisms and enhance their setting. The purpose of this study was to evaluate the reduction of organic matter (DQO) and biogas production in a reactor of PVC with 90 cm long and 15 cm in diameter, through support rings of bamboo, 10 cm in length and diameter ranged from 1.7 to 2.5 cm, with a volume of 6 L. The organic loading used were 4,357, 4,708, 5,601 and 6,126 g DQO.L-1.day-1, corresponding to hydraulic retention time (TRH) of 3,5, 2,8, 3,25 and 2,7 days, respectively. It was observed that with the increase of organic load was increased production of biogas, the largest observed for a load of 6.126 g DQO.L-1.day-1 with an average of 9.146 L.day-1. Regarding the removal of organic matter were achieved values of 98.35, 99.09, 99.33 and 98.55% respectively for each load applied, with the highest efficiency observed in charge of 5.601 g COD. L-1. day-1, but without significant differences. (author)

  15. On the `hysteresis` effect in the biological nitrogen removal :theory and full scale experimental evaluation; Sul fenomeno di `isteresi` nella rimozione biologica dell`azoto: concettualizzazione teorica e valutazione sperimentale a scala reale degli effetti

    Energy Technology Data Exchange (ETDEWEB)

    Tatano, F. [Politecnico di Milano, Milan (Italy). Dip. di Ingegneria Idraulica, Ambientale e del Rilevamento

    1996-07-01

    The wastewater treatments plants localized in the Ruhr River (Germany), generally present a typical wastewater temperature variation curve during the winter period. These temperature changes produce specific effects on the nitrogen removal efficiencies in the activated sludge systems. The so called `hysteresis` phenomenon is responsible for these effects. The paper deals with some simplified theoretical considerations and with a full scale experimental evaluations of the effects caused by the hysteresis phenomenon in the biological nitrogen removal.

  16. Monitoring and controlling the biological purification process in a waste water treatment plant using a respirometry analyser; Vigilancia y control del proceso de la depuracion biologica en una EDAR por medio de un analizador de respirometria

    Energy Technology Data Exchange (ETDEWEB)

    Serrano, J. E.

    2004-07-01

    In a waste water biological treatment, we have to take into account that the activated sludge is a living and breathing process, and a lack of bioactivity information might cause serious confusion about control criteria on the biological reactor. For this reason, to get bioactivity information in a timely manner through the respiration analysis would be a real breakthrough in better process control. Therefore, to identify the respiration rates and calculate their derived parameters represents the guidelines of respirometry and can be considered as the most sensitive variables on the basis of which activated sludge process theory can be validated. (Author)

  17. Degradation of non-biodegradable pesticides in water by coupling photo catalysis and bio treatment; Eliminacion de plaguicidas no biodegrabables en aguas mediante acoplamiento de fotocatalisis solar y oxidacion biologica

    Energy Technology Data Exchange (ETDEWEB)

    Ballesteros Martin, M. M.; Sanchez Perez, J. A.; Malato Rodriguez, S.

    2008-07-01

    The influence of pesticide concentration, expressed as dissolved organic carbon (DOC), on combined solar photo-Fenton and biological oxidation treatment was studied using wastewater containing different pure and commercial pesticides (dimethoate, oxydemeton-methyl, carbaryl, oxamyl, methomyl, imidacloprid, dimethoate and pyrimethanil). Different initial concentrations were assayed. Variation in biodegradability with photo catalytic treatment intensity was tested using Pseudomonas putida. Biodegradation efficiencies after the photoreaction were found to be lower for the pesticide solution with the higher concentration, showing that to achieve sufficient biodegradability, the photo-Fenton treatment time must be increased with pesticide concentration. Bio treatment was carried out in different reactor including sequencing batch reactor (SBR) mode. As revealed by the biodegradation kinetics, intermediates generated at the higher pesticide concentration caused lower carbon removal rates in spite of the longer photo-Fenton treatment time applied. One strategy for treating water with high concentrations of pesticides and overcoming the low biodegradability of photo-Fenton intermediates is to mix it with a biodegradable carbon source (wastewater containing an easily biodegradable substrate, such as urban wastewater) before biological oxidation. This combination of photo-Fenton and acclimatized activated sludge in several SBR cycles led to complete biodegradation of a pesticide solutions up to of 500 mg/L of DOC. (Author)

  18. Biological invasion of Pinus ponderosa and Pinus contorta: case study of a forest plantation in Northwestern Patagonia; Invasion biologica de Pinus ponderosa y Pinus contorta: estudio de caso de una plantacion en la Patagonia noroccidental

    Energy Technology Data Exchange (ETDEWEB)

    Dezzotti, A.; Sbrancia, R.; Mortoro, A.; Monte, C.

    2009-07-01

    In the Southern Hemisphere, Pinus species from plantations can bring about processes of biological invasion that cause significant and permanent changes on the structure and functioning of surrounding natural ecosystems. The invasive character of Pinus ponderosa (P) and Pinus contorta (C) was examined for a 20-year old plantation located in the Alicura Forest Station (40 degree centigrade 40' S and 71 degree centigrade 00' W), through the analysis of abundance, age and spatial structures, and dispersal of natural regeneration. Seedlings and saplings were located largely within the plantation boundaries, and exhibited a density of 6.9 ind / ha (41 % for P and 59 % for C), a clustered spatial pattern with clumps dispersed not randomly, and a mean dispersal rate of 9.5 m / yr for P. ponderosa and 5.4 m / yr for P. contorta. Both species were invading the adjacent area, according to technical criteria based on ecological responses. However, regeneration niche is strongly hindering tree establishment and dispersal, probably due to high plant cover, presence of vertic soils, and absence of ectomycorrhizal fungi. These results can contribute to predict the capability of P. contorta and P. ponderosa to become invasive, in order to maximize the positive balance of forestry based on these species in northwestern Patagonia. (Author) 50 refs.

  19. Biomass production and biological depuration of sugar cane vinasse by mixed culture of filamentous fungi and yeasts; Producao de biomassa e depuracao biologica da vinhaca de cana-de-acucar por cultura mista de fungos filamentosos e leveduras

    Energy Technology Data Exchange (ETDEWEB)

    Ceccato, Sandra Regina

    1988-12-01

    Sugar and alcohol technology has originated wastes such as vinasse with organic load that causes pollution in Brazil. Many alternatives have been proposed to convert it into useful products such as microbial protein. The aim of this work was to select mixed cultures of filamentous fungi and yeasts with high biomass production in vinasse and to study the cultural condition optimization of the selected combination based on the protein content and the waste depuration. The growth of pure cultures along the time was also evaluated as well as the amino acid composition of the biomass obtained. (author)

  20. Microwave digestion techniques applied to determination of boron by ICP-AES in BNCT program; Digestion de matrices biologicas asistida por microondas para el analisis espectrometrico de boro en BNCT

    Energy Technology Data Exchange (ETDEWEB)

    Farias, Silvia S; Di Santo, Norberto R; Garavaglia, Ricardo N; Pucci, Gladys N; Batistoni, Daniel A [Comision Nacional de Energia Atomica, General San Martin (Argentina). Dept. de Quimica; Schwint, Amanda E [Comision Nacional de Energia Atomica, General San Martin (Argentina). Dept. de Radiobiologia

    1999-07-01

    Recently, boron neutron capture therapy (BNCT) has merged as an interesting option for the treatment of some kind of tumors where established therapies show no success. A molecular boronated species, enriched in {sup 10}B is administrated to the subject; it localizes in malignant tissues depending the kind of tumor and localization. Therefore, a very important fact in BNCT research is the detection of boron at trace or ultra trace levels precisely and accurately. This is extremely necessary as boronated species do localize in tumoral tissue and also localize in liver, kidney, spleen, skin, membranes. By this way, before testing a boronated species, it is mandatory to determine its biodistribution in a statistically meaning population, that is related with managing of a great number of samples. In the other hand, it is necessary to exactly predict when to begin the irradiation and to determine the magnitude of radiation to obtain the desired radiological dose for a specified mean boron concentration. This involves the determination of boron in whole blood, which is related with boron concentration in the tumor object of treatment. The methodology selected for the analysis of boron in whole blood and tissues must join certain characteristics: it must not be dependant of the chemical form of boron, it has to be fast and capable to determine boron accurately and precisely in a wide range of concentrations. The design and validation of experimental models involving animals in BNCT studies and the determination of boron in blood of animals and subjects upon treatment require reliable analytical procedures to determine boron quantitatively in those biologic materials. Inductively coupled plasma-atomic emission spectrometry (ICP-AES) using pneumatic nebulization is one of the most promising methods for boron analysis, but the sample must be liquid and have low solid concentration. In our case, biological tissues and blood, it is mandatory to mineralize and/or dilute samples. Digestion in open vessels may conduct to analyte losses due to vaporization of volatile compounds. The mineralization in closed vessels, at high pressure, does not allow this losses and increase the efficiency to destroy organic mater due to the combined action of pressure and temperature. This paper describes the development of analytical methodologies to determine boron at trace and ultra trace levels. (author)

  1. Diversity of foam producing nocardioform actinomycetes isolated from biological foam from activated sludge plants in Comunidad Valenciana; Diversidad de actinomicetos nocardioformes productores de espumas biologicas aislados de plantas depuradoras de aguas residuales de la Comunidad Valenciana

    Energy Technology Data Exchange (ETDEWEB)

    Soler, A.; Alonso, J.L.; Cuesta, G.

    2009-07-01

    The formation of biological foams in activated sludge systems is one of the most important problems of solid separation in wastewater treatment plants. Nocardioform actinomycetes are the most important filamentous bacteria responsible of foam formation. This group of microorganisms has hydrophobic cellular surfaces due to the mycolic acids. These foams interfere in wastewater treatment process because retain many suspended solids, block conductions and produce overflowing in the digesters and corridors. To identify correctly the nocardioform actinomycetes we have to do poli phasic taxonomy that includes 16S rDNA sequences analysis, determinate several chemo taxonomic markers and some phenotypic tests. (Author) 18 refs.

  2. Symbiotic treatment. A new biological technology for treating waste waters from the canning industry; Depuracion simbiotica. Una nueva tecnologia biologica para la depuracion de aguas residuales del sector de conservas vegetales

    Energy Technology Data Exchange (ETDEWEB)

    Ayuso Garcia, L. M.; Canova Perez, J. L.; Llorens Pascual del Riquelme, M.; Saez Mercader, J.

    2008-07-01

    Many studies show that biological processes are the most suitable for the canned food industry waste water treatment. A new biological technology that minimizes the management, operation and maintenance problems associated to the waste water treatment is proposed. The results obtained in pilot plant of a new natural technology for treating waste water are presented in this paper. This technology was applied to the treatment of canned food industry waste water and received the effluent coming from peach and pear processing. A pilot plant composed of five treatment stages with vertical distribution has been constructed. This plant treats 80 l/h and have a surface of 1 m{sup 2}. The effluent of this plant complies the requirements established in Decreto 16/1999 (BORM no.97, 29 april 1999), about discharge of industrial waste water to sewers. (Author) 10 refs.

  3. Chemical and biological contamination of fish products; Contaminazione chimica e biologica dei prodotti della pesca. Corso tenuto presso l`Istituto Superiore di Sanita`, Roma, 1-2 giugno 1994

    Energy Technology Data Exchange (ETDEWEB)

    Stacchini, Angelo [Istituto Superiore di Sanita` , Rome (Italy). Lab. Alimenti

    1997-03-01

    The first contribution deals with chemical contaminants, particularly heavy metals and their acceptable daily intake (ADI). The following contributions deals with sanitary measures concerning biological contamination associated with the consumption of seafood, especially shellfish, taking into consideration the epidemiological relevance of some biological contaminants in Italy and Europe. Particular sanitary aspects concerning the presence of enteric viruses in mussels are presented; new molecular biology methodologies and the different techniques for enteroviruses concentration are discussed. Some questions concerning the detection of algal bio toxins are shown, based on the experience recently acquired by the Istituto Superiore di Sanita` about the biological methods. The current chromatographic methods for PSP and DSP biotoxin determination and the most recent developments in chemical methods based on liquid chromatography and mass spectrometric techniques are presented. The last section is devoted to the parasitic contamination of seafood.

  4. Improved operating efficiency due to the use of pure oxygen in biological treatment plants for industrial effluents; Mejora de la eficiencia en la operacion de plantas depuradoras biologicas de efluentes industriales mediante la utilizacion de oxigeno puro

    Energy Technology Data Exchange (ETDEWEB)

    Cabeza, R.; Bargallo, J.; Crespi, M.

    2005-07-01

    The use of pure oxygen in biological waste water treatment plants offers a number of advantages due to its physicochemical properties in relation to Henry's Law Flick's Law. Pure oxygen is employed in addition to, or instead of, the existing oxygenation system for treating waste in plants in industrial sectors such as foods, chemicals, paper-making, textiles and others. Its main application is in heavy load treatments and when there are problems of space for siting or enlarging the plant, as it combines well with membrane bioreactor (MBR) and sequence batch reactor (SBR) treatments, as has been shown in several plants in operation. (Author) 4 refs.

  5. Effect of host and food availability on the biological characteristics of Trichogramma galloi Zucchi (Hymenoptera, Trichogrammatidae); Efeito da disponibilidade de hospedeiro e de alimento nas caracteristicas biologicas de Trichogramma galloi Zucchi (Hymenoptera, Trichogrammatidae)

    Energy Technology Data Exchange (ETDEWEB)

    Pratissoli, Dirceu; Oliveira, Harley N. de; Oliveira, Regiane C. de; Zago, Hugo B. [Universidade Federal do Espirito Santo (UFES), Alegre, ES (Brazil). Centro de Ciencias Agrarias], e-mail: dirceu@npd.ufes.br, e-mail: hnoliveira@insecta.ufv.br; Vieira, Stella M.J. [Universidade Federal de Vicosa (UFV), MG (Brazil). Dept. de Engenharia Agricola

    2004-03-15

    Effect of host and food availability on the biological characteristics of Trichogramma galloi Zucchi (Hymenoptera, Trichogrammatidae). Biological characteristics of Trichogramma galloi Zucchi, 1988 were evaluated in laboratory where these parasitoids were reared on eggs of Diatraea saccharalis (Lepidoptera, Pyralidae) with or without honey, and exposed to eggs of the host after 0, 6, 12, 24, 36, 48, 60, 72 and 84 hours of emergence. The parasitism rate and viability showed higher for individuals that received food. The sex ratio was not influenced by food. The number of individuals per egg only showed difference for those adults that did not receive food and stayed six hours without the host eggs. Checking the effect of the availability of eggs, only the sex ratio, with or without honey, did not show differences. The results show that T. galloi needs a carbohydrate supply and the time can influence the reproductive capacity. (author)

  6. Formulation, radiopharmaceutical kinetics and dosimetry of the {sup 188}Re(V)-DMSA complex; Formulacion, radiofarmacocinetica y dosimetria del complejo {sup 188}Re(V)-DMSA

    Energy Technology Data Exchange (ETDEWEB)

    Garcia S, L; Ferro F, G [Departamento de Materiales Radiactivos. Instituto Nacional de Investigaciones Nucleares, C.P. 52045 Salazar, Estado de Mexico (Mexico); Murphy, C.A. de; Pedraza L, M [Departamento de Medicina Nuclear, Instituto Nacional de la Nutricion, Salvador Zubiran, Mexico D.F. (Mexico); Azorin N, J [Departamento de Fisica, Universidad Autonoma Metropolitana Iztapalapa, Mexico D.F. (Mexico)

    1999-07-01

    It was developed through experimental design (ANOVA), a formulation to prepare the {sup 188} Re(V)-Dmsa complex. Likewise, there were realized studies of radiopharmaceutical kinetics and internal dosimetry in animals, its normal and with induced tumors, considering an open bi compartmental model using the MIRD methodology. The {sup 188} Re(V)-Dmsa complex was obtained with a radiochemical purity greater than 95% incubating 30 min at 90 Centigrade under the following formulation: [SnCl{sub 2}] = 1.4 mg/ml, [ascorbic acid] = 0.5 mg/ml, p H = 2.0 - 3.0. The stability test of the formulation, shows that after 48 h of its preparation, does not produce radiolytic degradation neither chemical decomposition. The radiopharmaceutical kinetics data show an average residence time 7.2h, velocity constant {alpha} = 0.6508h{sup -1} and {beta} = 0.1046 h{sup -1} with an apparent distribution volume 6.9 l. The main elimination via was renal and it was observed osseous caption with an accumulated activity 522.049 {+-} 62 MBq h (residence time 14.1094 {+-} 1.69h). In according with the dosimetric calculations, by each 37 MBq injected, the equivalent dose at the tumor was 9.67{+-} 0.33 Sv/g, for an effective dose 0.292 {+-} 0.0017 mSv/MBq. The images obtained in the gamma camera of the mice with induced tumors, show that do not have significant accumulation in the metabolic organs. The caption in bone and in tumors induced of the {sup 188} Re(V)-Dmsa complex, show its potential for be used as a palliative agent for pain in patients with osseous metastasis and in the treatment of tumors of soft tissue. (Author)

  7. Personal dosimetry calculations by means of radio pharmacokinetic and gamma graphic studies; Calculos de dosimetria personalizada por medio de estudios radiofarmacocineticos y gammagraficos

    Energy Technology Data Exchange (ETDEWEB)

    Arteaga de Murphy, C; Ferro F, G; Pedraza L, M; Montoya M, C E [Departamento de Medicina Nuclear, Instituto Nacional de Ciencias Medicas y Nutricion, Vasco de Quiroga 15, 14000 Mexico D.F. (Mexico)

    2000-07-01

    The determination of the absorbed radiation dose is an essential factor to assess the risk to patient with a diagnostic study of nuclear medicine but over all it is indispensable for predicting the efficiency of individualized radio pharmacotherapy and weighting up the risk/benefit of the treatment. In studies for diagnostic or/and treatment of nuclear medicine generally the absorbed radiation dose is not determined for each patient since the methods for estimating it are laborious and include complex models such biological as mathematical, therefore is very important to have a relatively easy method. The obtained data with {sup 99m} Tc-Abp., a new radiopharmaceutical for osseous gammagraphy, were used with the purpose of exemplifying a practical method. The radio pharmacokinetic parameters were determined during 24 hours in 10 health voluntaries and serial gamma grams were taken during two hours to another voluntaries. The obtained data were used to estimate, with the MIRDOSE3 computer program, the absorbed radiation dose in an osseous dragging with {sup 99m} Tc-Abp. is low: 0.00472 m Gy/MBq to osseous marrow, mainly to the vertebral column and femur, and 0.00169 m Gy/ MBq to whole body. These data are lower than those informed in the medical literature for other bis phosphonates. (Author)

  8. Thermoluminescent dosemeters characterization for patient dosimetry in diagnostic radiology preliminary results;Caracterizacao de dosimetros termoluminescentes para dosimetria de pacientes em radiodiagnostico - resultados iniciais

    Energy Technology Data Exchange (ETDEWEB)

    Castro, William J.; Squair, Peterson L. [Faculdade Novo Rumo, Belo Horizonte, MG (Brazil); Centro de Desenvolvimento de Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil); Gonzaga, Natalia B. [Universidade Unincor, Belo Horizonte, MG (Brazil); Centro de Desenvolvimento de Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil); Nogueira, Maria S.; Silva, Teogenes A. da [Centro de Desenvolvimento de Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil)

    2009-07-01

    The determination of the metrological characteristics of thermoluminescent (TL) dosimeters plays an important role in dosimetry of patients submitted to x-ray examinations for diagnostic purpose. Entrance surface doses can be measured with TL dosimeters to verify the compliance with the diagnostic reference levels. Organ doses can be estimated through TL measurements in an anthropomorphic phantom which it allows the radiation risk assessment. In this work, LiF:Mg,Ti (TLD-100) rod and chip thermoluminescent dosimeters were characterized considering their use for patient dosimetry in computerized tomography and mammography. Preliminary results showed that TL dosimeters have a response reproducibility of 7.8% and 4.8% and homogeneity of 18.4% and 6.5% for rod and chip shapes, respectively. (author)

  9. Progetto EURAMET: HLT03 DUTy - Dosimetria per terapie ultrasonore. Confronto tra metodi di misura - EURAMET: HLT03 DUTy - Dosimetry for ultrasound therapy. Intercomparison of methods

    Directory of Open Access Journals (Sweden)

    Giovanni Durando

    2016-03-01

    Full Text Available La mancanza di una definizione della dose ultrasonora rende di fatto impossibile la valutazione della più appropriata “quantità” energia ceduta ai tessuti dal fascio ultrasonoro emesso da un trasduttore durante una terapia. Il progetto di ricerca “Dosimetry for Ultrasound Therapy - DUTy”, finanziato dal programma di ricerca EURAMET EMRP, aveva tra i suoi principali obiettivi, oltre al confronto interlaboratorio che validasse le capacità metrologiche dei laboratori partecipanti, la ricerca della definizione di dose ultrasonora che consentisse la definizione di un piano terapeutico specifico per ogni paziente. ------ Standardized and traceable dose has not yet been developed for medical ultrasound applications. This means that the ‘amount’ of ultrasound required for a particular therapy cannot be calculated and that the ‘amount’ actually delivered quantified. The aim of EURAMET EMRP project “Dosimetry for Ultrasound Therapy - DUTy” project was developing the metrological infrastructure (definitions, validated measurement and modelling methods which underpins the specification of dose for therapeutic ultrasound applications allowing appropriate treatment planning and risk assessment.

  10. Development and application of a pediatric head phantom for dosimetry in computed tomography; Desenvolvimento e aplicacao de um simulador pediatrico craniano para dosimetria em tomografia computadorizada

    Energy Technology Data Exchange (ETDEWEB)

    Martins, Elaine Wirney

    2016-11-01

    To determine the exposure levels and the absorbed dose in patients undergoing CT scans, is necessary to calculate the CT dose index in measurements with a PMMA or water phantom. The phantom must be enough to simulate the attenuation and scattering characteristics of a human body or parts in a radiation field. The CT specific quantities : CT air kerma index (Ca,100) , weighted CT air kerma index (CW ), a total volume CT air kerma index (Cvol) and the CT air kerma-length product (PKL) must be determined and compared to literature reference levels. In this work a head pediatric phantom was developed, considering that the Brazilian published Diagnostic Reference Levels (DRL) are based on adult phantom measurements. This developed phantom shows a construction innovation using materials to simulate the skullcap, cortical bone (aluminum) and cancellous bone (PVC), and it was filled with distilled water. The phantom dimension follows the recommendations of the World Health Organization and the International Commission on Radiation Units for children from 0 to 5 years old head size: diameter of 160 mm and height of 155 mm. The skullcap has 4 mm of thickness and 111.9 mm of internal diameter. In order to evaluate its behavior, tests were carried out in calibration laboratories and in clinical beams. The results showed attenuation up to 23% when different materials are used as skullcap, demonstrating that the DRLs adopted could be overestimating the dose received by pediatric patients. It is observed that the dose received by CT skull scans presents different distribution, due to the skullcap partially attenuation and/or backscattering which is not considered when the PMMA phantom is used.

  11. In vivo thermoluminescent dosimetry in studies of helicoid computed tomography and excretory urogram; Dosimetria termoluminiscente In vivo en estudios de tomografia computada helicoidal y urograma excretor

    Energy Technology Data Exchange (ETDEWEB)

    Cruz C, D.; Azorin N, J. [UAM-I, 09340 Mexico D.F. (Mexico); Saucedo A, V.M.; Barajas O, J.L. [Unidad de Especialidades Medicas, Secretaria de la Defensa Nacional, 11500 Mexico D.F. (Mexico)

    2005-07-01

    The dosimetry is the field of measurement of the ionizing radiations. It final objective is to determine the 'absorbed dose' for people. The dosimetry is vital in the radiotherapy, the radiological protection and the treatment technologies by irradiation. Presently work, we develop 'In vivo' dosimetry, in exposed patients to studies of helical computed tomography and excretory urogram. The dosimetry 'in vivo' was carried out in 20 patients selected aleatorily, for each medical study. The absorbed dose was measured in points of interest located in crystalline, thyroid, chest and abdomen of each patient, by means of thermoluminescent dosemeters (TLD) LiF: Mg,Cu,P + Ptfe of national fabrication. Also it was quantified the dose in the working area. (Author)

  12. Characterization of chemical compounds for dosimetry of the radiation in industrial processes; Caracterizacao de compostos quimicos para dosimetria das radiacaoes em processos industriais

    Energy Technology Data Exchange (ETDEWEB)

    Galante, Ana Maria Sisti

    1999-07-01

    Different chemical compounds have been studied to optimize dosimetric systems in irradiation processes. In this study 2,3,5 Triphenyl -2H- Tetrazolium Chloride, Brilliant Cresyl Blue, Bromocresol Green and Potassium Nitrate were investigated for their merits or faults, for {sup 60} Co gamma field, in order to verify if can be considered as dosimeters. Fricke solution was used as reference dosimeter to determine absorption dose rates at the gamma facilities.Only Bromocresol Green and Potassium Nitrate are recommended for dosimetry purposes since the main characteristics were achieved. The other two compounds could be used in dosimetry with changes in their formulation. Bromocresol Green and potassium Nitrate are reproducible and radiation sensitive for absorbed doses from 300 Gy to 150 kGy Bromocresol Green was used in liquid form and Potassium Nitrate was prepared in solid pellets form. Spectrophotometry in the visible region was used as the main detection technique, which allows relating optical absorption, before and after irradiation, with the absorbed dose. The maximum absorption wavelength for each compound was observed at 450-460nm for bromocresol Green and 546nm for Potassium Nitrate. Dose calibration curves are linear for both compounds in all dose intervals. When irradiated with accelerated electrons, with energies between o,9 MeV and 1,5MeV, optical absorption intensification, of about 2,6 times, was observed when comparing results for Potassium Nitrate, with those for gamma rays. All the evaluations are presented in this work. (author)

  13. Training of reverse propagation neural networks applied to neutron dosimetry; Entrenamiento de redes neuronales de propagacion inversa aplicadas a la dosimetria de neutrones

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez P, C. F.; Martinez B, M. R.; Leon P, A. A.; Espinoza G, J. G.; Castaneda M, V. H.; Solis S, L. O.; Castaneda M, R.; Ortiz R, M.; Vega C, H. R. [Universidad Autonoma de Zacatecas, Av. Ramon Lopez Velarde 801, Col. Centro, 98000 Zacatecas, Zac. (Mexico); Mendez V, R. [Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas, Laboratorio de Patrones Neutronicos, Av. Complutense 22, 28040 Madrid (Spain); Gallego, E. [Universidad Politecnica de Madrid, Departamento de Ingenieria Nuclear, ETSI Industriales, Jose Gutierrez Abascal 2, 28006 Madrid (Spain); De Sousa L, M. A. [Centro de Desenvolvimento da Tecnologia Nuclear / CNEN, Av. Pte. Antonio Carlos 6627, 31270-901 Pampulha, Belo Horizonte, Minas Gerais (Brazil)

    2016-10-15

    Neutron dosimetry is of great importance in radiation protection as aims to provide dosimetric quantities to assess the magnitude of detrimental health effects due to exposure of neutron radiation. To quantify detriment to health is necessary to evaluate the dose received by the occupationally exposed personnel using different detection systems called dosimeters, which have very dependent responses to the energy distribution of neutrons. The neutron detection is a much more complex problem than the detection of charged particles, since it does not carry an electric charge, does not cause direct ionization and has a greater penetration power giving the possibility of interacting with matter in a different way. Because of this, various neutron detection systems have been developed, among which the Bonner spheres spectrometric system stands out due to the advantages that possesses, such as a wide range of energy, high sensitivity and easy operation. However, once obtained the counting rates, the problem lies in the neutron spectrum deconvolution, necessary for the calculation of the doses, using different mathematical methods such as Monte Carlo, maximum entropy, iterative methods among others, which present various difficulties that have motivated the development of new technologies. Nowadays, methods based on artificial intelligence technologies are being used to perform neutron dosimetry, mainly using the theory of artificial neural networks. In these new methods the need for spectrum reconstruction can be eliminated for the calculation of the doses. In this work an artificial neural network or reverse propagation was trained for the calculation of 15 equivalent doses from the counting rates of the Bonner spheres spectrometric system using a set of 7 spheres, one of 2 spheres and two of a single sphere of different sizes, testing different error values until finding the most appropriate. The optimum network topology was obtained through the robust design methodology of artificial neural networks where the parameters of the network that produced the best results were selected. (Author)

  14. Uncertainty analysis in the determination of absorbed dose in water by Fricke chemical dosimetry; Analise das incertezas na determinacao da dose absorvida na agua por dosimetria quimica Fricke

    Energy Technology Data Exchange (ETDEWEB)

    Vasconcelos, Fabia; Aguirre, Eder Aguirre, E-mail: fabiavasco@hotmail.com, E-mail: ederuni01@gmail.com [Fundacao do Cancer, Rio de Janeiro, RJ (Brazil); Universidade do Estado do Rio de Janeiro (UERJ), RJ (Brazil)

    2016-07-01

    This work studies the calculations of uncertainties and the level of confidence that involves the process for obtaining the dose absorbed in water using the method of Fricke dosimetry, developed at Laboratorio de Ciencias Radiologicas (LCR). Measurements of absorbance of samples Fricke, irradiated and non-irradiated is going to use in order to calculate the respective sensitivity coefficients, along with the expressions of the calculation of Fricke dose and the absorbed dose in water. Those expressions are used for calculating the others sensitivity coefficients from the input variable. It is going to use the combined uncertainty and the expanded uncertainty, with a level of confidence of 95.45%, in order to report the uncertainties of the measurement. (author)

  15. A new computation tool for neutron spectrometry and dosimetry; Una nueva herramiento de computo para la espectrometria y dosimetria de neutrones

    Energy Technology Data Exchange (ETDEWEB)

    Martinez B, M. R.; Ortiz R, J. M.; Vega C, H. R. [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Av. Ramon Lopez Velarde No. 801, Col. Centro, Zacatecas (Mexico)], e-mail: mrosariomb@yahoo.com.mx

    2009-10-15

    By using the integrated accounts of spectrometric system of Bonner spheres is possible to reconstruct the neutron spectrum using various methods such as: Monte Carlo, the parameterization and iterative methods. The response matrix, counting rates and neutron spectrum are intimately related through the integral-differential of Fredholm of first type. however, the weight of Bonner spheres system, the procedure of spectra reconstruction, the need of a expert user, the high time consumption, the need to use a reconstruction code (BUNKI, SAND, among others) and the spectrum resolution, are some of problems that this system presents. The above difficulties have motivated the development of complementary procedures such as maximum entropy, genetic algorithms and artificial neural networks. In recent years, using neural network technology has become an alternative procedure in the nuclear science research area, considering a replacement for classical techniques used for years. In previous works, was used a new method called robust design methodology of artificial neural networks, to construct various network topologies capable of solving the problems of neutron spectrometry and dosimetry, however noted that not exist tools for end-user that allow test and validate the designed networks. This paper presents the development of a software for neutronic spectrometry and dosimetry, based on information extracted from an artificial neural network designed in previous work, through the robust design methodology of artificial neural networks with the following characteristics: was designed in a user graphical interface easy to use, speed on the application execution, unlike other deconvolution codes, not is necessary to select and initial spectrum for spectrum reconstruction, as an additional element to this tool, besides spectrum, the calculation is performed simultaneous of 13 equivalent dose from just counting rates from a spectrometric system of Bonner spheres. (Author)

  16. Production of LiF films for dosimetric thermoluminescence application; Producao de filmes de LiF para aplicacao em dosimetria termoluminescente

    Energy Technology Data Exchange (ETDEWEB)

    Mauricio, Claudia Lucia de Pinho

    2000-12-01

    This work studies the LiF monolayer and multilayer polycrystalline film's dosimetric properties. The films were produced by electron beam evaporation technique in aluminium and stainless steel substrates maintained at several temperatures. As dosimetric variable, the intensity of the thermoluminescent (TL) glow curve of the films was used. effects of the substrate type and temperature; of the addition of layers of Mg F{sub 2} NaF and Cu F{sub 2} to the LiF films; and of thermal treatments in the TL response of the produced films were studied. The microstructural characterization of the films was accomplished through measures of scanning electronic microscopy and grazing incidence X-rays diffraction analysis. The dosimetric characterization was made of gamma radiation exposure in a {sup 60} Co source, with kerma from 0,1 to 500 Gy. Studies of reproducibility, homogeneity, stability and other environmental effects were also made. LiF and Cu F{sub 2}: LiF; Mg F{sub 2} films were the only ones that presented mechanical stability and reproducibility of the TL emission. There is a strong indication of some correlation between the residual tension fields inside the films and the intensity of its TL emission peaks. LiF monolayer films present supralinear behaviour from 0,2 to 100 Gy. These films present a main TL glow peak around 150 deg C, whose half-time is about 30 days. Its volumetric sensitivity can reach about 60 times that of LiF powder and about 0,25 that of TLD100 (LiF:Mg, Ti commercial dosimeter from Harshaw Chemical Co.) The homogeneity and reproducibility inside a same film batch is better than 12% for 95% confidence level. Cu F{sub 2} : LiF: Mg F{sub 2} films present linear behaviour from 3 to 500 Gy and its main TL glow peak around 200 deg C did not present any fading for a a period of 30 days, in laboratory conditions. This glow peak is characteristic of the Mg doping of LiF, which confirms the diffusion of Mg ions from the Mg F{sub 2} layer to the LiF layer. The TL volumetric sensitivity of these films is about four times that of LiF powder and about 1% that of TLD 100. The homogeneity and reproducibility inside a same film batch is better than 20% for 95% of confidence level. (author)

  17. Neutron spectrometry and dosimetry by means of evolutive neural networks; Espectrometria y dosimetria de neutrones por medio de redes neuronales evolutivas

    Energy Technology Data Exchange (ETDEWEB)

    Ortiz R, J.M.; Martinez B, M.R.; Vega C, H.R. [UAZ, Av. Ramon Lopez Velarde Num. 801, 98000 Zacatecas (Mexico)

    2008-07-01

    The artificial neural networks and the genetic algorithms are two relatively new areas of research, which have been subject to a growing interest during the last years. Both models are inspired by the nature, however, the neural networks are interested in the learning of a single individual, which is defined as fenotypic learning, while the evolutionary algorithms are interested in the adaptation of a population to a changing environment, that which is defined as genotypic learning. Recently, the use of the technology of neural networks has been applied with success in the area of the nuclear sciences, mainly in the areas of neutron spectrometry and dosimetry. The structure (network topology), as well as the learning parameters of a neural network, are factors that contribute in a significant way with the acting of the same one, however, it has been observed that the investigators in this area, carry out the selection of the network parameters through the essay and error technique, that which produces neural networks of poor performance and low generalization capacity. From the revised sources, it has been observed that the use of the evolutionary algorithms, seen as search techniques, it has allowed him to be possible to evolve and to optimize different properties of the neural networks, just as the initialization of the synaptic weights, the network architecture or the training algorithms without the human intervention. The objective of the present work is focused in analyzing the intersection of the neural networks and the evolutionary algorithms, analyzing like it is that the same ones can be used to help in the design processes and training of a neural network, this is, in the good selection of the structural parameters and of network learning, improving its generalization capacity, in such way that the same one is able to reconstruct in an efficient way neutron spectra and to calculate equivalent doses starting from the counting rates of a Bonner sphere spectrometric system. (Author)

  18. Thermoluminescent dosimetry of new phosphors of Zn O exposed to beta radiation; Dosimetria termoluminiscente de nuevos fosforos de ZnO expuestos a radiacion beta

    Energy Technology Data Exchange (ETDEWEB)

    Cruz V, C.; Burruel I, S.E.; Grijalva M, H. [UNISON, A.P. 130, Hermosillo, Sonora (Mexico); Barboza F, M.; Bernal, R. [CIF, UNISON, A.P. 5-088, Hermosillo, Sonora (Mexico)

    2004-07-01

    In this work, we report the thermoluminescence dosimetry of a new Zn O phosphor obtained by annealing of Zn S powder precipitated when Zn S films were grown by employing a CBD method. The collected Zn S powder was pressed in a die to form pellets which were subjected to different thermal treatments under air atmosphere. X-ray diffraction (XRD) patterns and energy-dispersive X-ray Spectrometry (EDS) analyses confirmed the transformation of Zn S to Zn O. The phosphors thus obtained were exposed to high doses of beta radiation and their thermoluminescent dosimetry show that these new phosphors are materials suitable to be used in high dose thermoluminescence dosimetry. (Author)

  19. The Pelletron Accelerator of IFUNAM and its possible applications to the dosimetry; El Acelerador Pelletron del IFUNAM y sus posibles aplicaciones a la dosimetria

    Energy Technology Data Exchange (ETDEWEB)

    Rickards, J. [Instituto de Fisica, UNAM, Circuito Exterior, C.U. 04510 Mexico D.F. (Mexico)

    1999-07-01

    The Pelletron Accelerator of positive ions 3 MV in the Institute of Physics of UNAM has characteristics that make it useful for the application to the radiations dosimetry. It is ideal for studying the detailed mechanisms of the radiation interaction with matter, therefore it can be applied to know the performance of dosemeters. With this device can be accelerated almost any type of ion, including He, but excepting the others noble gases. The energies of the disposable ions are in the interval 1 MeV until several MeV, depending of the state of charge selected, the energy can be varied continuously with accuracy of some KeV. It can be achieved streams from 10{sup 4} until 10{sup 6} ions/cm{sup 2}, allowing studies of individual events (tracks) or of collective processes. the beam size can be varying from a diameter 1 mm until 5 cm. It is also took in account with detectors and other techniques associated that can be combined for supporting studies, as surface barrier detectors and of other types, as well as the RBS, PIXE, RN techniques and channeling. (Author)

  20. Dosimetry through the Secondary Laboratory of Dosimetric Calibration of Mexico; Dosimetria a traves del Laboratorio Secundario de Calibracion Dosimetrica de Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Tovar M, V.M.; Alvarez R, J.T.; Medina O, V.P.; Vergara M, F.; Anaya M, R.; Cejudo A, J.; Salinas L, B. [ININ, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

    2004-07-01

    In the beginnings of the sixty years an urgent necessity is presented mainly in the developing countries, of improving in important form the accuracy in the dosimetry of external faces in therapy of radiations (radiotherapy centers), mainly in the calibration of ''clinical dosemeters''. In 1976 the International Atomic Energy Agency, (IAEA), and the World Health Organization, (WHO), they carried out a mutual agreement with regard to the establishment and operation of a net of Secondary Patron Laboratories of Dosimetry, (LSCD). The necessity to establish measure patterns in the field of the dosimetry of the ionizing radiations, is necessary, to have an accuracy but high in the dosimetry of the radiation beams in therapy which is highly dependent of the dose given to the tumor of those patient with cancer. Similar levels of accuracy are required in protection measures to the radiation with an acceptable smaller accuracy, however, when the personal dosemeters are used to determine the doses received by the individuals under work conditions, such mensurations in therapy of radiations and radiological protection will have traceability through a chain of comparisons to primary or national patterns. The traceability is necessary to assure the accuracy and acceptability of the dosimetric measures, as well as, the legal and economic implications. The traceability is also necessary in the dosimetry of high dose like in the sterilization of different products. The main function of the LSCD is to provide a service in metrology of ionizing radiations, maintaining the secondary or national patterns, which have a traceability to the International System of measures, which is based for if same in the comparison of patterns in the Primary Laboratories of Dosimetry (LPD) under the auspice of the International Office of Weights and Measure (BIPM). The secondary and national patterns in the LSCD constitute in Mexico, the national patterns of the magnitudes in the dosimetry of the ionizing radiations. The net of the LSCD of the IAEA/WHO counts the international support to promote the objectives of improving the accuracy in dosimetry measures, particularly in radiotherapy centers, radiological protection and irradiation of different products, as well as, to transfer the dosimetric magnitudes and the distribution of the knowledge in applied dosimetry. The net of LSCD of the IAEA has 69 laboratories in the world in 58 states affiliated members, 13 primary laboratories (Germany, Australia, Austria, Canada, France, Hungary, Italy, Japan, Holland, Russia, United Kingdom, United States), 5 international organizations (ICRU, BIPM, IOMP, IEC, IOML). The first Standard Regional Center of Calibration and Dosimetry in Mexico settled down in the year of 1974 in the Department of Radiotherapy of the Hospital General of Mexico of the Secretary of Health SSA of Mexico. It was working until the year of 1985 when an earthquake in Mexico City destroys great part of its infrastructure. Later on in the year of 1986, the Standard Regional Center of Calibration and Dosimetry, for agreement of the SSA and of the National Institute of Nuclear Research, ININ, step to the Department of Metrology of the ININ. (Author)

  1. Personal dosimetry TLD 100 in orthopedic surgeons exposed to ionizing radiation in Bogota - Colombia; Dosimetria personal TLD 110 en medicos ortopedistas expuestos a radiacion ionizante en Bogota - Colombia

    Energy Technology Data Exchange (ETDEWEB)

    Sierra C, B. Y.; Jimenez, Y. [Universidad Nacional de Colombia, Departamento de Fisica, Grupo de Fisica Medica, Carrera 45 No. 26-85, Bogota (Colombia); Plazas, M. C. [Hospital Universitario Fundacion Santa Fe de Bogota, Instituto de Oncologia Carlos Ardila Lulle, Calle 119, No. 7-90, 220246 Bogota (Colombia); Eslava S, J. [Universidad Nacional de Colombia, Instituto de Investigaciones Clinicas, Grupo Equidad en Salud, Carrera 45 No. 26-85, Bogota (Colombia); Groot R, H., E-mail: brigith.sierra@gmail.com [Universidad de los Andes, Laboratorio de Genetica Humana, Carrera 1 No. 18A -12, Bogota (Colombia)

    2014-08-15

    Orthopedic surgeons should be considered as professionals occupationally exposed to ionizing radiation, for using C arc (fluoroscope) an equipment of X type radiation emission, during surgical procedures for imaging generation. Some health institutes, use of C arc under uncontrolled circumstances, such a lack of dosimetry control, incomplete or absence of personnel protective elements and protective measures, which in turn, lead to a high exposition to the personnel. Materials and methods. Study of double match cohort by age and gender, was conducted, in four health institutions of second and third level of attention in Bogota city. Personal dosimetry measurements with TLD-100 dosimetry crystals in both cohorts and environmental dosimetry in each of operation rooms used for orthopedic procedures, were carry out during six months of follow up. Dosimetry crystals were read in a Harshaw 4500 - Bicron equipment, in the Medical Physics Laboratory of National University of Colombia. Results. Dosimetry measurements are compatibles with those of occupationally exposed personnel 3.44 mSv/6 m CI 95% (1.66-3.99), even does not overpass ICRP recommendations, are higher as were expect at the beginning of the study. The median of effective accumulative dose in thorax is 3,4 mSv CI 95% (1,66-3,99), higher in comparison with neck value 2,7 mSv CI 95% (1,73-3,80) and hand dosimetry 1,42 mSv CI 95% (0,96-2,34). Conclusions: Orthopedic surgeons should be considered occupational exposed to ionizing radiation, who has to accomplish to the radiological protection measures, dosimetric follow up and maintenance of the used X ray equipment. It was confirm throughout this study that dosimetry shows higher levels as expected at the beginning of the study, compatible with occupationally exposed personnel. (Author)

  2. TL Dosimetry on the Tandetron Ion Accelerator area of the ININ; Dosimetria TL en el area del Acelerador de iones Tandetron del ININ

    Energy Technology Data Exchange (ETDEWEB)

    Valdovinos A, M.A.; Gonzalez M, P.R. [Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

    2000-07-01

    For the fulfilment of the operation tests of the Positive Ions type Tandetron 4120 MC, 2 MV, it was obtained the permission consented by the National Commission of Nuclear safety and safeguards (CNSNS). During the stage of tests were arranged Tl dosemeters in the Tandetron Accelerator area, as well as toward to the beam exit. In this work, it was presented the results obtained of the measurement of radiation levels, as much in the area as in the beam exit. This Accelerator is useful in different fields of science such as: biology, radiochemistry, materials, solid state physics, archaeology and environmental sciences between others. (Author)

  3. A new Implementation of the multi-channel analysis in the dosimetry through radiochromic films; Una nueva implementacion del analisis multicanal en la dosimetria mediante peliculas radiocromicas

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez Rodriguez, C.; Martin Martin, G.; Bermudez Luna, R.; Lopez Fernandez, A.; Torres Olombrada, M. V. de; Garcia Canibano, T.; Caballero Guerra, P.

    2013-07-01

    The objectives of this study are to implement multi-channel analysis algorithm using open source tools, extend the application of the same to a scanner other than the supported by Micke, generate maps of dose absorbed in compatible format with the PTW Verisoft quality control program and to quantify the improvement in the results of the gamma index as to what would be obtained by applying a conventional single-channel analysis. (Author)

  4. Development and implementation of own software for dosimetry multichannel film; Desarrollo e implementacion de un software propio para la dosimetria multicanal con pelicula radiocromica EBT2

    Energy Technology Data Exchange (ETDEWEB)

    Jimenez Feltstrom, D.; Reyes Garcia, R.; Luis Simon, F. J.; Carrasco Herrera, M.; Sanchez Carmona, G.; Herrador Cordoba, M.

    2013-07-01

    The objective of this work is to develop its own software for multichannel film dosimetry Radiochromic EBT2. Compare the results obtained with its use in multichannel and single-channel dosimetry. Check that the multi-channel dosimetry eliminates much of the artifacts caused by dirt, fingerprints, scratches, etc. Radiochromic in film and scanner devices. (Author)

  5. Experimental verification of a new neutron spectrometer for environmental dosimetry and area; Verficiacion experimental de un nuevo espectrometro de neutrones para dosimetria ambiental y de area

    Energy Technology Data Exchange (ETDEWEB)

    Gomez-Ros, J. M.; Romero, A.; Begogini, R.; Esposito, A.; Moraleda, M.; Lagares, J. I.; Sansaloni, F.; Arce, P.; Llop, J.

    2011-07-01

    In this communication, we present experimental results with a new neutron spectrometer, developed jointly by the Radiation Dosimetry Unit of CIEMAT Unita di Fisica and INFN-LNF Sanitary (Italy), consisting of a polyethylene moderating sphere detectors thermal neutrons (paired thermoluminescent dosimeters and activation foils) located in different positions. The device configuration and distribution of dosimeters are designed to elicit a response in a nearly isotropic up to 20 MeV energy range. (Author)

  6. Determination of effective dose for workers hemodynamics service using double dosimetry; Determinacion de la dosis efectiva para los trabajadores del servicio de hemodinamica usando doble dosimetria

    Energy Technology Data Exchange (ETDEWEB)

    Ruiz Lopez, M. A.; Lobato Munoz, M.; Jodar Lopez, C. A.; Ramirez Ros, J. C.; Jerez Sainz, M. I.; Pamos Urena, M.; Carrasco Rodriguez, J. L.

    2013-07-01

    The use of an additional dosimeter at the level of the neck above the lead apron we can provide an indication of the dose in the head (the Crystal dose). In addition, it is possible to combine the two readings of the dosimeter to provide an improved estimate of the effective dose. In the hemodynamics service of our Hospital we have maintained a worker for 3 years with the double dosimetry read monthly. With the readings from these dosimeters will do following algorithms, several estimates of the effective dose to see if, with working conditions that occur in this service, it would be necessary to extend this practice to the rest of the workers to get a better estimation of effective dose. (Author)

  7. Experience of the new service of dosimetry internal by Bio elimination of Tecnatom; Experiencia del nuevo servicio de dosimetria interna por bioeliminacion de Tecnatom

    Energy Technology Data Exchange (ETDEWEB)

    Duran, T.; Navas Menchen, C.; Campos Mendia, J.

    2012-07-01

    Internal dosimetry is of particular relevance for occupationally exposed workers in the field of nuclear decommissioning and radioactive facilities. The tasks to be performed at these facilities involve an increase in the risk of incorporation of radioactive material into the body, the radioactive waste generated diverse in nature and involve work that may lead to a greater dispersion of radioactive material.

  8. ISO 9001 certification in the clinical dosimetry process in physics medical service; Certificacion ISO9001 en el proceso de dosimetria clinica en un servicio de fisica medica

    Energy Technology Data Exchange (ETDEWEB)

    Font Gomez, J. A.; Andres Redondo, M. M.; Gandia Martinez, A.; Jimenez Albericio, F. J.; Mengual Gil, M. A.

    2013-07-01

    The objective of this work is to simply name a series of procedures that are part of the certification and technical instructions (manuals about how to perform specific tasks) without going into details. (Author)

  9. Development of pathological anthropomorphic models using 3D modelling techniques for numerical dosimetry; Desenvolvimento de modelos antropomorficos patologicos usando tecnicas de modelagem 3D para dosimetria numerica

    Energy Technology Data Exchange (ETDEWEB)

    Costa, Kleber Souza Silva [Faculdade Integrada de Pernambuco (FACIPE), Recife, PE (Brazil); Barbosa, Antonio Konrado de Santana; Vieira, Jose Wilson [Instituto Federal de Educacao, Ciencia e Tecnologia de Pernambuco, Recife, PE (Brazil); Lima, Fernando Roberto de Andrade, E-mail: falima@cnen.gov.b [Centro Regional de Ciencias Nucleares do Nordeste (CRCN-NE/CNEN-PE), Recife, PE (Brazil)

    2011-10-26

    Computational exposure models can be used to estimate human body absorbed dose in a series of situations such as X-Ray exams for diagnosis, accidents and medical treatments. These models are fundamentally composed of an anthropomorphic simulator (phantom), an algorithm that simulates a radioactive source and a Monte Carlo Code. The accuracy of data obtained in the simulation is strongly connected to the adequacy of such simulation to the real situation. The phantoms are one of the key factors for the researcher manipulation. They are generally developed in supine position and its anatomy is patronized by compiled data from international institutions such as ICRP or ICRU. Several pathologies modify the structure of organs and body tissues. In order to measure how significant these alterations are, an anthropomorphic model was developed for this study: patient mastectomies. This model was developed using voxel phantom FASH and then coupled with EGSnrc Monte Carlo code

  10. EPR response characterization of drugs excipients for applying in accident dosimetry; Caracterizacao da resposta RPE dos excipientes dos medicamentos para aplicacao em dosimetria de acidente

    Energy Technology Data Exchange (ETDEWEB)

    Marczewski, Barbara S.; Rodrigues Junior, Orlando; Galante, Ocimar L.; Costa, Zelia M. da; Campos, Leticia L. [Instituto de Pesquisas Energeticas e Nucleares (IPEN), Sao Paulo, SP (Brazil)

    2002-07-01

    Some drugs are widely used by the population and can be employed to dose retrospective. The carbohydrates (saccharides), commonly used as excipients in the pharmaceutical industry, produce a quantity of free radicals after gamma irradiation, making them useful for dosimetry in emergency or accident situations that imply in dose evaluation from the materials found nearly or in contact with victims. In general, EPR signal from pulverized pills of some drugs are very complex due to the variety of components in the formulation. Because of this fact, some pharmaceutical excipients identified in the pill composition were also analysed by EPR spectrometry. On the counter drugs were studied: Cebion glucose, AAS, Aspirina, Conmel, Lacto-Purga and sugar substitutive ZeroCal. The excipients were: lactose, amide, anhydrous glucose and magnesium stearate. In some samples the number of radicals produced increased with the dose, showing a linear response for a dose range of interest and an adequate sensibility for dosimetry in accident cases.

  11. Use of Fricke solution modified with dyes for dosimetry in phototherapeutic treatments; Uso da solucao Fricke modificada com corantes para futura dosimetria em tratamentos fototerapeuticos

    Energy Technology Data Exchange (ETDEWEB)

    Almeida, Mayara Gabriella Oliveira de; Nascimento, Rizia Keila; Vieira, Rafaela Etelvina de Amorim; Souza, Vivianne Lucia Bormann, E-mail: mayaradqf@hotmail.com, E-mail: riziakeila@hotmail.com, E-mail: rafaelarodriguesss@hotmail.com, E-mail: vlsouza@cnen.gov.br [Centro Regional de Ciencias Nucleares do Nordeste (CRCN-NE/CNEN-PE), Recife (Brazil)

    2014-07-01

    Dyes and pigments (photosensitizers) are characterized by their ability to absorb visible light, and to participate in photochemical reactions. These colors are used in medicine in the dose recommended for use in photodynamic therapy (PDT). There are lasers that can meet most of the phototherapeutic agents and are capable of providing light of considerable power with precision on the injured tissue. The use of light emitting diodes (LEDs) have become feasible, thus reducing the cost of the procedures. The Dosimetry Laboratory Chemistry of the CRCN-NE/Brazilian CNEN has worked with some likely dye use in phototherapy treatments, including: methylene blue, malachite green and toluidine blue. A volume of 2.6 ml of the dosimeters was transferred to test tubes and these were irradiated with LED 24, 48, 72 and 96 acrylic simulator 110 mm x 110 mm x 80 mm at a distance of 6.5 cm from reading light source of the irradiated samples was performed on a spectrophotometer. Having obtaining excellent correlations (above 0.97) to the dosimeter calibration curves. Suggests that the dosimeter can be applied to perform a quality control in photodynamic therapy. However, further experiments should be performed before a wide application of this technique. A volume of 2.6 ml of the dosimeters was transferred to test tubes and these were irradiated with LED 24, 48, 72 and 96 acrylic simulator 110 mm x 110 mm x 80 mm at a distance of 6.5 cm from reading light source of the irradiated samples was performed on a spectrophotometer. Having obtaining excellent correlations (above 0.97) to the dosimeter calibration curves. Suggests that the dosimeter can be applied to perform a quality control in photodynamic therapy. However, further experiments should be performed before a wide application of this technique.

  12. Dosimetry for the treatment of cystic craniopharyngioma through radiocolloids with {sup 186} Re; Dosimetria para el tratamiento de craneofaringiomas quisticos mediante radiocoloide con {sup 186} Re

    Energy Technology Data Exchange (ETDEWEB)

    Rojas, E.L.; Al-dweri, F.M.O.; Lallena, A.M. [Depto. de Fisica Moderna, Universidad de Granada (Spain); Bodineau, C.; Galan, P. [Servicio de Radiofisica Hospitalaria, Hospital Regional Universitario ' Carlos Haya' , 29010 Malaga (Spain)

    2003-07-01

    The cystic craniopharyngioma (CQ) are histologically benign tumors that can affect important organs, as the hypothalamus or the optic nerve. They are treated introducing, inside the cyst, a radioactive colloid. The wall constitutes the white volume and the dosimetry is usually carried out starting from analytic formulas that only are valid in the case of an homogeneous media, uniform and infinite. In this work it is studied the dosimetry of the CQ by means of Monte Carlo simulation (MC), taking in account the different materials and interfaces that conform them. We present the obtained results for the radionuclide {sup 186} Re. We have used the Monte Carlo code Penelope and we follow 5x10{sup 6} histories in each simulation. We supposed a size of CQ of 1.75 cm of radio and a wall thickness of 1 mm and we have varied the constituent materials of the interior of the cyst and of the wall. The analytic calculations that we carry out show an excellent agreement with the MC results for an unique media (water), as much for the beta radiation as for those originated of the Rhenium disintegration. However, when it takes in account the gel that is introduced in the tumor for the treatment and we vary the constituent material of the wall, we find important differences. Of the analysis of our results we can conclude that the dosimetry for the treatment of CQ based in the usual analytic formulas overestimates the doses really deposited in the wall of the CQ. (Author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2014-08-15

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

  14. Characterization of silicates and calcium carbonates applied to high-dose dosimetry; Caracterizacao de silicatos e carbonatos de calcio aplicados a dosimetria de doses altas

    Energy Technology Data Exchange (ETDEWEB)

    Vila, Gustavo Barreto

    2012-07-01

    The predominant isomorphous form in the biominerals studied in this work (oyster shell, coral, mother of pearl and shell) was aragonite. The appearance of the calcite phase occurred at 500 deg C at a heating rate of 10 deg {sup C}/s for all samples except for the coral sample, which was 400 deg C, independent of the heating rate. The most abundant element in the biominerals samples was Ca in the CaO form, and in the silicates (tremolite, diopside and rhodonite) Si in the SiO form. The most common trace element observed in the biominerals samples was Fe. The analyses of electron paramagnetic resonance showed lines of Mn{sup 2+} in the coral and mother-of-pearl samples before irradiation. In the case of the irradiated samples, the defects found were CO{sub 2}{sup -}, CO{sub 3}{sup 3-}, CO{sub 3}{sup -} and SO{sub 2}{sup -}, in the g range between 2.0010 and 2.0062. In the analyses by optical absorption of biominerals, transitions due to the presence of Mn in the samples were found. A thermoluminescent (TL) peak at approximately 140 deg C was found for the biominerals and at 180 deg C for silicates, which intensity depends directly on the dose. For samples exposed to different types of radiation, the TL peak occurred at lower temperatures. From the dose-response curves obtained for these materials, it was possible to determine a linear range for which their application in high dose dosimetry becomes possible. Taking into account the radiation type, among biominerals and silicates, the lowest detectable dose (40mGy) to gamma radiation was achieved for oyster shell samples using the measuring technique of optically stimulated luminescence (OSL). Using beta radiation, for diopside and tremolite samples the lowest detectable dose of 60mGy was obtained. For all samples, using the TL, OSL and thermally stimulated exoelectron emission (TSEE) techniques in alpha, beta and gamma radiation beans a good response reproducibility was obtained. Therefore, the samples characterized in this work are suitable to be used as high dose detectors/dosimeters. (author)

  15. Quality control of radiosurgery: dosimetry with micro camera in spherical mannequin; Control de calidad en radiocirugia: dosimetria con microcamara en maniqui esferico

    Energy Technology Data Exchange (ETDEWEB)

    Casado Villalon, F. J.; Navarro Guirado, F.; Garci Pareja, S.; Benitez Villegas, E. M.; Galan Montenegro, P.; Moreno Saiz, C.

    2013-07-01

    The dosimetry of small field is part of quality control in the treatment of cranial radiosurgery. In this work the results of absorbed dose in the isocenter, Planner, with those obtained from are compared experimentally with a micro-camera into an spherical mannequin. (Author)

  16. Internal dosimetry for [4-{sup 14}C]-cholesterol in humans; Dosimetria interna para o [4-{sup 14}C]-colesterol em humanos

    Energy Technology Data Exchange (ETDEWEB)

    Marcato, Larissa Andreto

    2012-07-01

    The main objective of this work is to provide a biokinetic model in order to estimate the radiometric dose due to intake of [4-{sup 14}C]-cholesterol. The model was validated comparing the values of fecal excretion and absorption described in literature with that predicted by the model. The proposed model achieved good concordance between the results (p = 0.416 for excretion and p = 0.423 for absorption). The coefficients of effective dose (SvBq{sup -1}), equivalent dose (SvBq{sup -1}) and absorbed dose (GyBq{sup -1}) in human organs and tissues were calculated using the MIRD methodology and the compartmental analysis software ANACOMP. The coefficients were estimated for four phantoms: adult with a body mass of 73.3 kg, 15 years old adolescent (56.9 kg), 10 years old child (33.2 kg) and five years old child (19.8 kg). The organ that received the highest absorbed dose for all phantoms was the lower large intestine (LLI). The allometry theory was used to interpolate the coefficient of absorbed dose in the lower large intestine (DLLI) for unknown body mass (m): DLLI (GyBq{sup -1})=161.26 m (kg){sup -1.025}. For the same administered activity, the effective dose coefficient (E) decreases as the body mass increases. On other words, for the same intake activity, individuals with low body mass are exposed to higher doses. The allometry theory was used to interpolate the coefficient effective dose (E) for unknown body mass (m): E(SvB{sup -1})= 171.1 m(kg){sup -1,021}. (author)

  17. Dosimetria comparativa de braquiterapia de próstata com sementes de I-125 e Pd-103 via SISCODES/MCNP

    OpenAIRE

    Trindade, Bruno Machado; Christóvão, Marília Tavares; Trindade, Daniela de Fátima Maia; Falcão, Patrícia Lima; Campos, Tarcisio Passos Ribeiro de

    2012-01-01

    OBJETIVO: O presente artigo visa apresentar um estudo dosimétrico comparativo de braquiterapia de próstata com sementes de I-125 e Pd-103. MATERIAIS E MÉTODOS: Um protocolo adotado para ambos os implantes com 148 sementes foi simulado em um fantoma tridimensional heterogêneo de pelve por meio dos códigos SISCODES/MCNP5. Histogramas dose-volume na próstata, bexiga e reto, índices de doses D10, D30, D90, D0,5cc, D2cc e D7cc, e representações de distribuição espacial de dose foram avaliados. RES...

  18. TLD personnel dosimetry and its relationship with the radiodiagnostic training; Dosimetria personal TLD y su relacion con la capacitacion en radiodiagnostico

    Energy Technology Data Exchange (ETDEWEB)

    Gaona, E.; Franco E, J.G. [DEHA, Universidad Autonoma Metropolitana-Xochimilco, Mexico D.F. (Mexico); Gaona C, E. [Universidad Tecnologica de Mexico, Mexico D.F. (Mexico)

    2002-07-01

    The personnel dosimetry and the training in radiological protection in radiodiagnostic in Mexico before 1997 were almost nonexistent except few services of public and private radiology, we can to say that the personnel dosimetry and the obligatory training was born in the year 1997, together with the present Mexican Official Standards in radiology. This study has the purpose to make an evaluation of the personnel dosimetry of 110 radiology services distributed in the Mexican Republic for the year 2001 and to estimate the annual and bimonthly mean doses, as well as its trust intervals and its relationships with the personnel training in radiological protection by means of a sampling that was realized in two stages (1997 and 2000) in the metropolitan area of Mexico City. The results show that the received doses by the medical and technical personnel in the participating radiology services are in the 0.03 mSv and 0.94 mSv interval and the mean is 0.25 mSv. The estimated annual personnel dose would be in the 0.18 mSv to 5.64 mSv interval, which are values very lower to the annual dose limit that is 50 mSv and its magnitude is similar to the effective annual dose by natural background radiation. In the first stage in training was found that there is not a significant difference in the response frequencies among the medical and technical personnel with a p < 0.05. The 52% of the occupational exposure personnel of radiology uses dosemeter, but only 17% of them know the dose reports. the 15.8% of personnel considers that dosemeter protects against radiation and only 16.5% knows the annual maximum permissible dose for stochastic effects. The second stage, the results shown that there is a significant difference in the response of frequencies among medical and technical personnel, the same results which are obtained for members and non members of a professional association with a p < 0.05. The 38% has personnel dosimetry, the 19% knows the principles of radiological protection. (Author)

  19. Determination of the components of uncertainty for a dosimetry system in radiation protection; Determinacion de las componentes de incertidumbre para un sistema de dosimetria en radio proteccion

    Energy Technology Data Exchange (ETDEWEB)

    Lopez, F., E-mail: flopez@unan.edu.ni [Universidad Nacional Autonoma de Nicaragua, Managua (Nicaragua); Cabral, T.S.; Peixoto, J.G. [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil)

    2013-07-01

    This work is about the theoretical calculation of uncertainties associated to the dosimetry of photons of a {sup 137}Cs source that will be used in a Dosimetry Laboratory. In this case recognition of the influence quantities that provide most uncertainty and the right choice of resolution of auxiliary equipment to obtain the smallest uncertainties according to the laboratory. (author)

  20. Accreditation of a system of extremity dosimetry: validation and uncertainty of method; Acreditacion de un sistema de dosimetria de extremidades: validacion e incertidumbre del metodo

    Energy Technology Data Exchange (ETDEWEB)

    Romero Gutierrez, A. M.; Rodriguez Jimenez, R.; Lopez Moyano, J. L.

    2013-07-01

    The authors' goal is to spread the practical experience gained during the accreditation process paying special attention to the process of method validation and estimation uncertainty of the dosimetry system. (Author)

  1. Dosimetry for computed tomography using Fricke gel dosimetry and magnetic resonance imaging; Dosimetria em tomografia computadorizada empregando dosimetro Fricke gel e a tecnica de imageamento por ressonancia magnetica

    Energy Technology Data Exchange (ETDEWEB)

    Capeleti, Felipe Favaro; Campos, Leticia L., E-mail: felipe@gmpbrasil.com.br [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

    2014-04-15

    In this work it was determined a new method for the determination of absorbed doses in Computed Tomography (CT) examinations using Fricke gel dosimetry developed at IPEN. Absorbed doses were determined by different methods of analysis, such as optical absorption spectrometry, ionization chambers and magnetic resonance imaging. Lower limit of sensitivity of the Fricke gel solution, the solution repeatability signal Fricke gel and CT equipment, detection sensitivity, among other tests were performed. Different equipment of computed tomography with multiple detectors were used. The Fricke gel solution showed better repeatability than ±5.5% using the technique of optical absorption spectrophotometry and computed tomography equipment showed repeatability better than ±0.2%. The Fricke gel solution features an easy and relatively quick preparation, but it is necessary to be careful not to contaminate and lose the solution. With the results, it was confirmed the application of this type of dosimetry for computed tomography equipment. (author)

  2. Calibration methods of plane-parallel ionization chambers used in electron dosimetry; Metodos de calibracao de camaras de ionizacao de placas paralelas para dosimetria de feixes de eletrons

    Energy Technology Data Exchange (ETDEWEB)

    Bulla, Roseli Tadeu

    1999-07-01

    The use of linear accelerators in radiotherapy is of great importance in Medicine, and according to international recommendations the electron beam dosimetry has to be performed using plane-parallel ionization chambers, previously calibrated in standard gamma radiation fields at accredited laboratories. In this work, calibration methods of plane-parallel ionization chambers used in dosimetry procedures of high energy electron beams of clinical accelerators were presented, tested and intercompared. The experiments were carried out using gamma radiation beams of {sup 60} Co at the Calibration Laboratory of Clinical Dosemeters at IPEN and electron beams od 4 to 16 MeV at the Radiotherapy Department of Hospital Israelita Albert Einstein, Sao Paulo. A method was chosen to be established at IPEN. Proposals of the calibration procedure, calibration certificate and data sheets are presented. (author)

  3. Spectrometry and dosimetry of isotopic sources of neutrons by means of artificial neural networks; Espectrometria y dosimetria de fuentes isotopicas de neutrones mediante redes neuronales artificiales

    Energy Technology Data Exchange (ETDEWEB)

    Vega C, H. R.; Ortiz R, J. M.; Hernandez D, V. M; Martinez B, M. R. [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Calle Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas (Mexico); Gallego, E.; Lorente, A. [Universidad Politecnica de Madrid, Departamento de Ingenieria Nuclear, C/Jose Gutierrez Abascal No. 2, 28006 Madrid (Spain); Barquero, R., E-mail: fermineutron@yahoo.co [Hospital del Rio Hortega, C/Dulzaina No. 2, 47012 Valladolid (Spain)

    2010-09-15

    The artificial neural networks technology has been applied to reconstruct the neutrons spectra of two isotopic sources: {sup 252}Cf, and {sup 241}Am-Be. Also, this technology has been applied to obtain the effective dose, E, and the personal dose equivalents, Hp(10) and environmental, H *(10). To obtain the spectra and the doses only were used the count rates produced in a Bonner Spheres spectrometer with a scintillator of {sup 6}LiI(Eu) of 0.4 {phi} x 0.4 cm{sup 2}. The equivalent environmental dose and the spectra of the sources were also obtained by means of the reconstruction code BUNKIUT. When comparing the results obtained by means of both procedures it was found that they are consistent. (Author)

  4. Monte Carlo dosimetry in simple geometries with interfaces: applications in radiotherapy; Dosimetria Monte Carlo en geometrias simples con interfases: aplicaciones en radioterapia

    Energy Technology Data Exchange (ETDEWEB)

    Rojas C, E.L

    2004-07-01

    In the last decade, dosimetry has evolved in an accelerated way due in part, to the development of new techniques and advances in instruments manufactured for several applications in Medical Physics. In order to improve achievements gotten with the use of radiation sources for therapeutic use, a guessed right dosimetry must be done and clinical data must be explained with the aid of investigation and supported with scientific bases. In this context, Monte Carlo (MC) method used to simulate radiation transport in materials, contribute with extensive knowledge and extremely useful information to that objective. MC dosimetry has some advantages over experimental and analytical dosimetry but it also has limitations. Maybe the most important is the computer time required to reach to an acceptable uncertainty level in a complex problem. Though this restrictive factor, a right application of MC simulation of radiation transport is a useful, reliable and versatile instrument for dosimetric calculations. From our point of view, the problem of heterogeneities in the sources or in the treatment targets in radiotherapy is of great importance, and this is the principal question to study aboard in this work. We use the MC simulation code Penelope to calculate some dosimetric quantities.The cases we study involve dosimetric aspects of different geometric distributions of radionuclides where interfaces are evident and must be taken into account. This work is divided in five chapters. In the first chapter we give a succinctly description of MC codes for simulation of the transport of particles in a medium and we describe the code Penelope. In chapter two, we study spherical distributions of radionuclides and the effect that interfaces in the target have in the dose received by the tumor. Specifically we study the application of radiocolloids with {sup 186} Re and {sup 32} P to treat homogeneous and nonhomogeneous cystic craniopharyngioma. Chapter three is dedicated to study plane distributions of radionuclides in presence of interfaces, particularly we deal with the injection of radiocolloids with {sup 165} Dy, {sup 32} P and {sup 90} Y into the knee joint with different healing purposes. The model is described and similar studies to those of chapter two, involving heterogeneities of the joint are presented. In chapter four, dosimetric studies of simulated treatments of radiosurgery of the head with the Leksell Gamma Knife are done. We describe the unit, give the simulation details and parameters and describe the targets. To make our investigation spheric interfaces of different materials in the phantoms are considered. Finally, a chapter with the conclusions is presented. References are given after this chapter. (Author)

  5. Dosimetria comparativa de braquiterapia de próstata com sementes de I-125 e Pd-103 via SISCODES/MCNP

    Directory of Open Access Journals (Sweden)

    Bruno Machado Trindade

    2012-10-01

    Full Text Available OBJETIVO: O presente artigo visa apresentar um estudo dosimétrico comparativo de braquiterapia de próstata com sementes de I-125 e Pd-103. MATERIAIS E MÉTODOS: Um protocolo adotado para ambos os implantes com 148 sementes foi simulado em um fantoma tridimensional heterogêneo de pelve por meio dos códigos SISCODES/MCNP5. Histogramas dose-volume na próstata, bexiga e reto, índices de doses D10, D30, D90, D0,5cc, D2cc e D7cc, e representações de distribuição espacial de dose foram avaliados. RESULTADOS: A atividade inicial de cada semente de I-125, para que D90 seja equivalente à dose de prescrição, foi calculada em 0,42 mCi, e de Pd-103, em 0,94 mCi. A dose máxima na uretra foi 90% e 108% da dose de prescrição para I-125 e Pd-103, respectivamente. A D2cc para I-125 foi 30 Gy no reto e 127 Gy na bexiga, e para Pd-103 foi 29 Gy no reto e 189 Gy na bexiga. A D10 no osso do púbis foi 144 Gy para I-125 e 66 Gy para Pd-103. CONCLUSÃO: Os resultados indicam que os implantes de Pd-103 e I-125 puderam depositar a dose prescrita no volume alvo. Entre os achados, observou-se excessiva exposição de radiação nos ossos da pelve, principalmente no protocolo com I-125.

  6. Quality assurance program in the External dosimetry laboratory of the CPHR; Programa de aseguramiento de la calidad en el laboratorio de dosimetria externa del CPHR

    Energy Technology Data Exchange (ETDEWEB)

    Molina P, D.; Pernas S, R.; Martinez H, E.; Cardenas H, J. [Centro de Proteccion e Higiene de las Radiaciones, Calle 20 No. 4113 e/41 y 47. Playa, C.P. 11300, A.P. 6195, C.P. 10600 La Habana (Cuba)

    2006-07-01

    From 1999 the Laboratory of External Dosimetry of the Radiation Protection and Hygiene Center comes applying in its service of personal dosimetry a Program of Quality Assurance. This program was designed according to the recommendations of national and international organizations as the National Assuring Office of the Republic of Cuba (ONARC), the International Standards Organization (ISO), the International Electro technique Commission (IEC) and the International Atomic Energy Agency (IAEA). In this work it is presented in a summarized way the operation of this Program of Quality Assurance which includes the administration and conservation of the results and the documentation of the service, the controls that are carried out to the equipment, the acceptance tests that are applied to the equipment and new dosemeters, the shipment and prosecution of the dosemeters, the evaluation, storage and conservation of the doses, the report of the results, the traceability and reproducibility of the measurements, the attention to the reclamations and the clients complaints and the internal and external audits to those that it undergoes periodically the laboratory. (Author)

  7. Kinetic and allometric models for dosimetry using radiopharmaceuticals labeled with lanthanides; Proposicao de modelos cineticos e alometricos para a dosimetria de radiofarmacos marcados com lantanideos

    Energy Technology Data Exchange (ETDEWEB)

    Lima, Marina Ferreira

    2012-07-01

    This work proposes two models based in compartmental analyses: Animal model and Human model, using images from gamma camera measurements to determinate the kinetic constants of the {sup 177}Lu-DOTATATE to three animal species (rat Wistar, Armenian hamster and Syrian hamster) and to the human in biodistribution studies split in two phases: Phase 1 governed by uptake from the blood and Phase 2 governed by the real excretion. The kinetic constants obtained from the animals' data ere used to build allometric scaling to predict radiopharmaceutical biodistribution in the human employing relations by mass, metabolism, by life span and by physiological parameters. These extrapolation results were compared with the PRRT (Peptide receptor radiotherapy) patients kinetic data calculated using the Human model. The kinetic constants obtained from humans were used in dose assessment to PRRT patients considering MIRD 26 organs and tissues. Dosimetry results were in agreement with available results from literature. For the Phase 1 allometric scaling from kinetic data from the blood to the organs straight responsible for the {sup 177}Lu-DOTATATE metabolism and excretion - liver, kidneys and urinary bladder -show good correlation in the scaling by mass, metabolism and physiological and parameters. For the Phase 2, only the kinetic data from blood to the liver and to the kidneys show good correlation. Based in the anaesthetics inhibitory action over the renal excretion, there is not empirical basis to allow measurement times over 40 minutes in in vivo studies with small animals. Consequently, the Phase 1 results seem enough to make allometric scaling to assessment dose in PRRT. (author)

  8. Validation criteria of an internal dosimetry laboratory in vivo; Criterios para la validacion de un laboratorio de dosimetria interna in vivo

    Energy Technology Data Exchange (ETDEWEB)

    Alfaro L, M. de las M., E-mail: mercedes.alfaro@inin.gob.mx [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

    2014-10-15

    People working with radioactive materials, under certain circumstances (e.g. not using the proper protective equipment, an incident not covered, etc.) could be incorporated into the body. The radiation protection programs include direct measurement methods -in vivo- or indirect -in vitro- or both, to know that radioactive material is incorporated into the body. The monitoring measurements of internal contamination or (Radio-bioassay) are carried out with the purpose of determining the amount of radioactive material incorporated in the body; estimate the effective dose and committed dose; management administration of radiation protection; appropriate medical management; and to provide the data necessary for the legal requirements and the preservation of records. The measurement methods used in the monitoring of internal contamination must be validated by the combination of the following processes: calibration, using standards reference materials and/or simulators; execute systematic research, using control samples; and intercomparison between laboratories and performance tests. In this paper the validation criteria of an internal dosimetry laboratory in vivo are presented following the information provided by the standard ANSI N13-30-1996 and ISO/TEC 17025-2005 as are the criteria of facilities, staff training, interpretation of measurements, performance criteria for monitoring of internal contamination in vivo, results reporting and records retention. Thereby we achieve standardized quantitative performance criteria of truthfulness, accuracy and detection limit and a consensus on statistical definitions to establish the validation plan of a monitoring laboratory of internal contamination in vivo. (Author)

  9. Cytogenetics dosimetry: dose-response curve for low doses of X-ray; Dosimetria citogenetica: curva dosis-respuesta para bajas dosis de rayos-X

    Energy Technology Data Exchange (ETDEWEB)

    Lara, Virginia E. Noval; Pineda Bolivar, William R.; Riano, Victor M. Pabon, E-mail: venovall.15@hotmail.com, E-mail: wrpineda@misena.edu.co, E-mail: vmpabonr@udistrital.edu.co [Universidad Distrital Francisco Jose de Caldas (UD), Bogota (Colombia). Grupo de Investigacion en Ciencia y Tecnologia Nuclear; Ureana, Cecilia Crane, E-mail: cecicrane@yahoo.com [Instituto Nacional de Salud (INS), Bogota (Colombia). Laboratorio de Genetica

    2013-07-01

    The purpose of this study was to conduct a preliminary study for the standardization in the future, the dose-response curve for low doses of X-rays, through the analysis of in vitro cultures of peripheral blood samples of 3 men and 3 women occupationally not exposed to artificial sources of ionizing radiation, age 18-40 years, where possible nonsmokers.

  10. Alanine/RPE dosimetry in the process of blood irradiation; Dosimetria alanina/RPE en el proceso de irradiacion de sangre

    Energy Technology Data Exchange (ETDEWEB)

    Chen, F.; Covas, D.T.; Baffa, O. [Departamento de Fisica e Matematica, FFCLRP, Universidade de Sao Paulo, 14040-901 Ribeirao Preto-SP (Brazil)

    2000-07-01

    A set of eighty dosemeters approximately of Dl- alanine was proportioned to the Hemo center of Hospital das Clinicas of Medicine Faculty at Ribeirao Preto (HC-FRMP) in the Sao Paulo University, with the purpose to realize a quality control of the radiation dose supplied to blood bags. These dosemeters were divided in eight groups and irradiated for a two months period.The dosemeters were adhered to the bags and arranged inside of an acrylic box filled water with dimensions: (40x40x20) cm{sup 3}. The box irradiation was made using two fields parallel-opposed of (40x40) cm{sup 2} at 80 cm distance source-surface, in the Radiotherapy Service of HC-FMRP, with a {sup 60} Co teletherapy unit. The irradiation time was sufficient to supply a dose of 20 Gy approximately in the box center. The RPE measures were realized in a Varian E-4 spectrometer operating in X-band. For the total of dosemeters and for the irradiation volume, the minimum and maximum doses were of 14 Gy and 23 Gy respectively. The mean dose was (18{+-}2) Gy (1 {sigma}), and the variability coefficient 11 %. Around 5 % of the bags received a dose under of the recommended limit by the Brazilian legislation and as consequence, the exposure time was increased. (Author)

  11. Reconstructive dosimetry of radiological accidents - study of a brazilian case of industrial gamma radiography; Dosimetria reconstrutiva de acidentes radiologicos - estudo de um caso brasileiro de gamagrafia industrial

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Francisco Cesar Augusto da; Hunt, John G.; Ramalho, Adriana [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Pinto, Livia M.F. Amalfi [ARCtest - Servicos Tecnicos de Inspecao e Manutencao Industrial Ltda., Paulinia, SP (Brazil)]. E-mail: protecao@arctest.com.br

    2002-07-01

    On May 2000, an industrial gamma radiography operator, during a maintenance work of a {sup 60}Co irradiator, has suffered a radiological accident with severe consequences to the left hand. The experts of the High Doses Analysis Group (GADE/IRD/CNEN) initiated the reconstructive dosimetry for the radiation dose estimation, in order to determine the real dose received by the operator, and to help the medical evaluation for prescribing the medical procedures for treatment of the involved victim. This paper presents the reconstructive dosimetry performed through the determination of the radiation doses of the operator, based on theoretical, experimental and computational methods. For the computer methods, a program for the calculation of external doses were used, based on the Monte Carlo method, and a human body simulator composed by voxels. The values of effective and equivalent doses are also presented which has caused severe lesions on the operator hand.

  12. Experience on IMRT treatment for prostate cancer. Planning, dosimetry and quality assurance; Experiencia en el tratamiento de IMRT en cancer de prostata. Planificacion, dosimetria y garantia de calidad

    Energy Technology Data Exchange (ETDEWEB)

    Gomez Barrado, A.; Garcia Vicente, F.; Fernandez Bedoya, V.; Zapatero Laborda, A.; Fernandez, I.; Bermudez Luna, R.; Perez Gonzalez, L.; Torres Escobar, J. J.

    2011-07-01

    In this study a revision concerning the treatment of prostate cancer with intensity-modulated radiation therapy (IMRT) is performed. Planning and verification of treatments involving dose calculations and image positioning are considered. A set of 110 patients is analysed concerning dosimetry and 92 considering image verification. Dose calculation is verified both experimentally and by means of a monitor unit (MU) calculation system. Positioning control of the prostate is achieved using intraprostatic fiducial markers and digitally reconstructed radiographs (DRRs) as well as a home-made software. All patients studied were consistent with the specifications of the treatment protocol regarding dose prescription in planning target volume (PTV), organ at risk (OAR) dose limitations, dosimetric quality assurance and positioning control. The procedure includes a learning curve considering every aspect of the treatment. The MU calculation system itself has been proved as an effective and functional tool for treatment verification. (Author) 12 refs.

  13. BeOSL system for personal dosimetry : dosimetric characteristics and practical application; Sistema BeOSL para dosimetria personal : caracteristicas dosimetricas y la aplicacion practica

    Energy Technology Data Exchange (ETDEWEB)

    Mende, E. [Helmholtz Zentrum Munchen, German Research Center for Environmental Health, Working Group Engineering, D-85764 Neuherberg (Germany)

    2015-10-15

    Full text: BeOSL system of Dosimetric s is very easy to use, assimilate and maintain. Our dosimeter defines a milestone in the supervision of personal equivalent dose of Hp (10) and Hp (0.07) it covers the range of total energy of 16 KeV to 10 MeV. For this energy range is exceptional in its energy dependence for official personal dosimetry. The BeOSL system consists of two modules, one of them is the BeOSL reader that measures the radiation exposure using the latest technology, optically stimulated luminescence (OSL). The reading is extremely fast; it does not require consumables such as nitrogen or other. The detector material is beryllium oxide (Be O); this is an OSL material tissue equivalent and therefore is ideal for personal dosimetry. The BeOSL technology allows multiple readings of the dosimeter (re-read) to verify the dose or archive the dosimeter. One of the biggest advantages of BeOSL system is its modular concept allows the system to run as a manual solution or as a complete automated robotic system, which can be filled with up to 5,000 dosimeters as bulk cargo. (Author)

  14. Dosimetry of internal emitting: principles and perspectives of the MIRD technology; Dosimetria de emisores internos: principios y perspectivas de la metodologia MIRD

    Energy Technology Data Exchange (ETDEWEB)

    Ferro F, G [Gerencia de Aplicaciones Nucleares en la Salud, Instituto Nacional de Investigaciones Nucleares, Salazar, Estado de Mexico C.P. 52045 (Mexico)

    1999-07-01

    The development of the radiopharmaceutical technology have multiplied the number of radioisotopes with applications in therapeutical nuclear medicine so known as Directed radiotherapy. Assuming the radiation is capable to produce noxious effects in the biological systems, it is important to evaluate appropriately the risks and benefits of the administration of radioactive agents in the patient. The outstanding parameter in this evaluation is the absorbed dose, which is product of the radiation emitted by a radionuclide that is localized or distributed to the interior of the human body in study and whose its estimation helps to predict the efficacy of the treatment. The scheme generalized of MIRD, it was formulated from thirty years ago for evaluating the interior dosimetry at level of organs.The finality of this work is to show the basic principles of the MIRD methodology and its perspectives using innovator tools as the dosimetry for dynamic masses, in particular the personnel dosimetry for the organs of each patient, the dosimetry for the small structures inside the organs (sub organic dosimetry), the distributions of doses in three dimensions (S voxel), the dosimetry at cellular level and the quantitative acquisition of pharmaceutical data. (Author)

  15. Direct detection of second harmonic and its use in alanine/EPR dosimetry; Deteccao direta do segundo harmonico e seu uso na dosimetria alanina/RPE

    Energy Technology Data Exchange (ETDEWEB)

    Chen, F.; Guzman, C.S.; Graeff, C.F.O.; Baffa, O. [Sao Paulo Univ., Ribeirao Preto, SP (Brazil). Faculdade de Filosofia, Ciencias e Letras. Dept. de Fisica e Matematica]. E-mail: chen@dfm.ffclrp.usp.br

    2001-07-01

    In this work, the possible use of the second harmonic EPR signal from irradiated alanine for low radiation dose ({approx}1 Gy) was explored, aiming applications to HDR brachytherapy and teletherapy. The second harmonic signal was directly detected after overmodulation. A batch of DL-alanine/paraffin small cylindrical pellets was made. A VARIAN E-4 X-Band EPR spectrometer with optimized operation parameters like microwave power and modulation amplitude to obtain a signal with the highest amplitude was used. The modulation frequency and modulation amplitude were 100 kHz and 1.25 mT (to overmodulate the signal) respectively. The second harmonic signal was directly detected at twice the modulation frequency. One group of dosimeters was irradiated with a {sup 192} Ir brachytherapy source and the other in a 10 MeV X-rays linear accelerator, both group at a dose range: 0.5 - 15 Gy. The second harmonic signal showed better resolution than the first harmonic one making possible a more easy localization of the signal. Moreover, for both types of radiation, the dose-response curve showed a good linear behavior for the dose range indicated. (author)

  16. Annual course of retraining for the occupational exposure personnel of the laboratory of internal dosimetry; Curso anual de reentrenamiento para el POE del laboratorio de dosimetria interna

    Energy Technology Data Exchange (ETDEWEB)

    Alfaro L, M.M. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

    2002-09-15

    The general objective of this report is to instruct the personnel in the basic concepts of radiological protection and in the Manual of Procedures of Radiological Safety of the Laboratory of Internal Dosimetry. Also, to exchange experiences during the activities that are carried out in the laboratory and in the knowledge of abnormal situations. The referred Manual consists of 14 procedures and 5 instructions which are listed in annex of this document. The content of this course consists of three topics: 1. Basic principles of radiological protection to reduce the received dose equivalent. 2. Use of radiation measurer equipment. 3. Emergency procedures of the laboratory of internal dosimetry. (Author)

  17. Thermoluminescent dosimetry in pediatric patients subjected to TAC cranium multi cutting studies; Dosimetria termoluminiscente en pacientes pediatricos sometidos a estudios de TAC multicorte de craneo

    Energy Technology Data Exchange (ETDEWEB)

    Tabares V, M.J.; Azorin N, J. [UAM-Iztapalapa, 09340 Mexico D.F. (Mexico); Azorin V, J.C. [CICATA-IPN, 11500 Mexico D.F. (Mexico)]. e-mail: azorin@xanum.uam. mx

    2007-07-01

    Full text: In this work the doses to critical organs in pediatric patient subjected to studies of multi cutting skull tomography were determined. The study included patient smaller than 16. The used tomograph was a Siemens Somaton 16 plus multi cutting. The dosimetry one carries out with thermoluminescent dosemeters of LiF:Mg,Cu,P +Ptfe of national production. This dosemeters type was used due to it characteristics, such as low fading, equivalence with the tissue, easy handling and reading and independence of it answer with the radiation energy. The value of the absorbed doses in organs in the simple study results half of the obtained value in the contrasted study that which indicates that the CTDI{sub vol} is proportional to the dose to organ. In the case of the skull three-dimensional reconstruction tomography the CTDI{sub vol} was practically the same one that for simple tomography was practically; however, the doses to organs differed significantly. When comparing the TDI{sub vol} value of the three-dimensional reconstruction tomography with that of the contrasted tomography the obtained reason it was 1:2; however, the doses to organ didn't show the same relationship and the absorbed dose in the case of the thyroid gland was even bigger in the study of three-dimensional reconstruction. The value of the CTDI{sub vol} is a good indicator of the exposure factors selected for the tomographic exploration and it is useful for the determination of the effective dose, but it doesn't indicate the absorbed dose to organ. (Author)

  18. Dosimetry of the JS-6500 industrial irradiator for the irradiation of the PVC graduated flasks; Dosimetria del irradiador industrial JS-6500 para la irradiacion de probetas de PVC

    Energy Technology Data Exchange (ETDEWEB)

    Castaneda F, A.; Carrasco A, H.; Martinez P, M.E. [Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

    2002-07-01

    The dosimetry of the JS-6500 AECL irradiator was realized, outside of the industrial transportation rails to know the dose distribution, as well as its dose speed. This one with the intention of exposing to gamma radiation; plastified PVC graduated flasks and evaluating their interweavement or degradation or both. This study of dosimetry was carried out by means of a theoretical and experimental evaluation in air atmosphere. The results allow to know the irradiation conditions of the PVC graduated flasks as well as those results prove that has not a significant difference among the obtained result as theoretical as experimentally due to that the obtained result in the theoretical evaluation is 2.62 KGy/h and the result for the case of the experimental evaluation is 2.74 KGy/h. (Author)

  19. Applications of the Monte Carlo simulation in dosimetry and medical physics problems; Aplicaciones de la simulacion Monte Carlo en dosimetria y problemas de fisica medica

    Energy Technology Data Exchange (ETDEWEB)

    Rojas C, E. L., E-mail: leticia.rojas@inin.gob.m [ININ, Gerencia de Ciencias Ambientales, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

    2010-07-01

    At the present time the computers use to solve important problems extends to all the areas. These areas can be of social, economic, of engineering, of basic and applied science, etc. With and appropriate handling of computation programs and information can be carried out calculations and simulations of real models, to study them and to solve theoretical or application problems. The processes that contain random variables are susceptible of being approached with the Monte Carlo method. This is a numeric method that, thanks to the improvements in the processors of the computers, it can apply in many tasks more than what was made in the principles of their practical application (at the beginning of the decade of 1950). In this work the application of the Monte Carlo method will be approached in the simulation of the radiation interaction with the matter, to investigate dosimetric aspects of some problems that exist in the medical physics area. Also, contain an introduction about some historical data and some general concepts related with the Monte Carlo simulation are revised. (Author)

  20. Calibration of semiconductors diodes for in vivo dosimetry in total body irradiation treatments; Calibracao de diodos semicondutores para dosimetria in vivo em tratamentos de irradiacao de corpo inteiro

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Fernanda F.; Costa, Alessandro M.; Ghilardi Netto, Thomaz, E-mail: ferretti.oliveira@gmail.com [Universidade de Sao Paulo (FFCLRP/USP), Ribeirao Preto, SP (Brazil). Faculdade de Ciencias e Letras. Departamento de Fisica; Amaral, Leonardo L. [Universidade de Sao Paulo (HCFMRP/USP), Ribeirao Preto, SP (Brazil). Hospital das Clinicas. Servico de Radioterapia

    2012-08-15

    This paper presents the results of in vivo dosimetry with p-type semiconductors diodes, EDP-15 (Scanditronix Wellhoefer) of two patients who underwent total body irradiation treatments, at Hospital das Clinicas da Faculdade de Medicina de Ribeirao Preto University of Sao Paulo (HCFMRP-USP). The diodes were well calibrated and the calibration factors were determined with the aid of a reference ionization chamber (FC065, IBA dosimetry, sensitive volume of 0.65 cm{sup 3}).The calibration was performed in a Total Body Irradiation (TBI) setup, using solid water phantoms. Different lateral thicknesses from one patient were simulated and then the calibration factors were determined by means of maximum depth dose readings (half of the lateral thickness). The response difference between diode readings and the prescribed dose for both treatments was below 4%. This difference is in agreement as recommended by International Commission on Radiation Units (ICRU), which is {+-}5%. (author)

  1. Study of the reliability of the TLDs reader in a Thermoluminescent dosimetry laboratory; Estudio de la constancia de la lectora de TLDs en un laboratorio de dosimetria termoluminiscente

    Energy Technology Data Exchange (ETDEWEB)

    Silva F, J.C. da; Fonseca, H.G. da [Instituto de Radioprotecao e Dosimetria-IRD, Av. Salvador Allende s/n- CEP, 22780-160, Rio de Janeiro (Brazil)]. e-mail: Jfeital@ird.gov.br

    2006-07-01

    Acting from the beginning of the decade of 80 in a postal program called 'Dentistry Programs' the Institute of Radioprotection and Dosimetry (IRD) it makes an effort supported by the IAEA so that it can determine with security the reference levels for the diverse practices in radiodiagnostic, including the dentistry. The dentistry program that uses 4 TLDs of lithium fluorite (LiF 100) for evaluations of the doses and of the hemirreductor layer, until 1995 it had already verified close of 5529 X-ray equipment. This work accompanies the result of 3 main parameters (arbitrary reading, reference light and noise) of the reader Harshaw marks 5500, when it is used for routine readings of the TLDs that arrive in the dosimetry laboratory for the due ratings. Together with these TLDs 9 previously selected dosemeters of a certain dosemeters lot is placed with a percentage uncertainty of 3% (for 1 standard deviation). before them they were irradiated in an irradiator of Sr90/Y90 with a dose of approximately 5 mGy, they are treated thermally in an oven PTW it marks to 400 grades for 1 hour + 100 grades for 2 hours and 100 grades in 15 minutes after the irradiations. The referred methodology follows a procedure where they are distributed of 3 in 3 the chosen TLDs of the group of the 9, to the beginning, half and at the end among the total quantity of dosemeters read in the reading disk that it can read of a single time 50 dosemeters. Together with this 10 measurements of reference light and noise are made, data that are provided by the reader through the 'softer WinRem'. Finally the obtained results of reference light and noise, its are compared with the maker's recommendations. Already that of the arbitrary reading (average of the 9 TLDs and its uncertainties), it has revealed a reduction in the percentage uncertainty (2 deviations standard / average) with relationship to one of the first results already obtained through the methodology proposal. It has been, also, applied the statistical test (F of Snedecor) for the verification among the variance of the populations for these two samples. (Author)

  2. Dosimetry in Computed Tomography head and neck scans; Dosimetria em varreduras de Tomografia Computadorizada de cabeça e pescoço

    Energy Technology Data Exchange (ETDEWEB)

    Gómez, A.M.L.; Santana, P.C.; Mourão, A.P., E-mail: amlgphys@gmail.com [Universidade Federal de Minas Gerais (UFMG), Berlo Horizonte, MG (Brazil). Departamento de Engenharia Nuclear

    2017-07-01

    Non-invasive diagnostic methods for X-rays, such as computed tomography (CT), have shown rapid growth in radiology services. There is concern about the radiation doses deposited in patients because the CT scans are the ones that contribute most to the dose increase in the population. The legislation for regulating patient dose levels only imposes an upper limit for a given test, depending on the region of the body to be irradiated. Therefore, it is necessary to know the dose values deposited in patients referring to routine protocols used in radiology services and propose an optimization of these according to the principles of radiological protection. Experiments were performed to determine the dose profile deposited in routine adult patient head scans using a male anthropomorphic simulator. Radiochromic film strips were introduced in the central region of the simulator to record the dose profile in the head and neck region and thus determine the air kerma values within the simulator object. Four scans were performed on a General Electric 64-channel tomograph programmed in helical mode and the scans were made with voltages of 80, 100 and 120 kV, and fixed current and automatic current control were used. The mean values recorded on the strips ranged from 14.82 to 22.98 mGy. Imaging noise analyzes were performed so that for all the scans the images obtained were considered of diagnostic quality and the Kerma values in the air when converted to absorbed dose are diagnostic parameters acceptable in the Brazilian legislation.

  3. Integrating techniques for neutron dosimetry in Linac 18 MV; Integrando tecnicas para dosimetria de neutrones en un Linac de 18 MV

    Energy Technology Data Exchange (ETDEWEB)

    Ceron R, P. V.; Diaz G, J. A. I.; Rivera M, T. [IPN, Centro de Investigacion en Ciencia Aplicada y Tecnologia Avanzada, Av. Legaria 694, 11500 Mexico D. F. (Mexico); Paredes G, L. C. [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico); Vega C, H. R. [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas, Zac. (Mexico)

    2015-10-15

    In this paper thermoluminescent dosimetry, analytical techniques and Monte Carlo calculations were used to estimate the neutron dose equivalent in a radiotherapy room with a linear electron accelerator of 18 MV. The equivalent dose was measured at isocenter to 1.42 m of target and at the entrance of the labyrinth of the room of a Novalis Tx. The neutron detectors were constructed with pairs of thermoluminescent dosimeters TLD 600 ({sup 6}LiF: Mg, Ti) and TLD 700 ({sup 7}LiF: Mg, Ti) which are placed inside a paraffin sphere of 20 cm in diameter. These measurements enabled the calculation of equivalent dose in the gate and the source term, using the relationships contained in the NCRP-151. Through the models carried out with the code MCNPX the absorbed dose distribution with regard to depth in a paraffin phantom are included and the neutron spectrum produced by the head, taking into account the geometry and component materials. The results are in the order of neutron milli sievert by gray of X-rays (mSv/Gy x) which are in the same order as those found in other reports for different accelerators. (Author)

  4. Electronic Paramagnetic Resonance of irradiated nails: challenges for a dosimetry in radiation accidents; Ressonancia Paramagnetica Eletronica de unhas irradiadas: desafios para uma dosimetria em acidentes radiologicos

    Energy Technology Data Exchange (ETDEWEB)

    Giannoni, Ricardo A., E-mail: giannoni@ird.gov.br [Instituto de Radioprotecao e Dosimetria, (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Rodrigues Junior, Orlando [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

    2014-07-01

    The purpose of this work is to characterize samples of human nails exposed to high doses of radiation, applying the technique of Electron Paramagnetic Resonance (EPR). The objective is to establish a dose response study that allow determine the absorbed dose by exposed individuals in situations of radiological accidents, in a retrospective form. Samples of human nails were collected and afterward irradiated with gamma radiation, and received dose of 20 Gy. The EPR measurement performed on the samples, before irradiation, permitted the signal identification of the components associated with effects caused by the mechanical stress during the fingernail cutting, the so-called mechanically induced signal (MIS). After the irradiation, different species of free radicals were identified, the so-called radiation induced signal (RIS). (author)

  5. Use of semiconductor diodes for dosimetry TomoTherapy Hi-Art unit; Utilizacion de diodos de semiconductor para la dosimetria de una unidad Tomotherapy Hi-Art

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez Rodriguez, J.; Garcia Repiso, S.; Martin Rincon, C.; Ramos Pacho, J. A.; Verde Velasco, J. M.; Montes Fuentes, C.; Dena Espinel, E. de; Gomez Llorente, P. L.; Fernandez Bordes, M.

    2011-07-01

    The radiotherapy unit TIT-Art TomoTherapy allows the realization of intensity modulated treatments in a helical manner through design, consisting of a linear accelerator installed on a rotating gantry in combination with the longitudinal movement of the treatment table and a multi leaf collimator (MLC) binary. The acceptance tests include, among other things, the acquisition of a set of dosimetric data (profiles and PDD), for later comparison with a reference set of measures taken at the factory, called the gold standard. Being pre commissioning from the factory, the unit will be accepted provided that the measured data meet the gold standard within preset tolerances. The dosimetric equipment used in the test of acceptance is provided by the manufacturer and so far is done with water tank, camera, software electrometer and associate of Standard Imaging and marketed by TomoTherapy Inc. The objective of this study is to compare the measures obtained with a semiconductor diode with the gold standard. (Author)

  6. Dosimetria de pacientes e médicos em intervenções coronárias percutâneas em Recife, Pernambuco, Brasil

    Directory of Open Access Journals (Sweden)

    Maria do Socorro Rocha da Silva

    2011-04-01

    Full Text Available OBJETIVO: Este trabalho teve como objetivo estimar os valores de doses de radiação recebidas por médicos e pacientes em procedimentos intervencionistas cardíacos realizados em um hospital público na cidade de Recife, Pernambuco. MATERIAIS E MÉTODOS: As medidas foram determinadas em 31 pacientes adultos, dos quais 22 tiveram acompanhamento clínico após o procedimento, e em dois cardiologistas com mais de dez anos de experiência. Parâmetros de irradiação para cada procedimento foram registrados. RESULTADOS: Os valores obtidos para a dose absorvida máxima na pele do paciente variaram entre 612 e 8.642 mGy, sendo que 53% foram maiores que 2.000 mGy, valores estes que podem causar efeitos determinísticos. Com relação aos médicos, a dose efetiva média por procedimento foi de 11 µSv e os valores médios do equivalente de dose nas extremidades, mais altos, foram: 923 µSv no pé esquerdo, 514 µSv no pé direito, 382 µSv na mão esquerda e 150 µSv no olho esquerdo. Dependendo do número de procedimentos, as doses recebidas pelos médicos podem exceder os valores limites de doses estabelecidos pelas normas nacionais e internacionais. CONCLUSÃO: Os resultados obtidos sinalizam a necessidade de adoção de estratégias para otimização da proteção radiológica tanto de pacientes quanto de médicos.

  7. Dosimetry of ultraviolet radiation with BaHfO{sub 3} powders; Dosimetria de radiacion ultravioleta con polvos de BaHfO{sub 3}

    Energy Technology Data Exchange (ETDEWEB)

    Barrera A, A. A.; Aguilar D, G. A.; Guzman M, J.; Rivera M, T. [IPN, Centro de Investigacion en Ciencia Aplicada y Tecnologia Avanzada, Av. Legaria 694, Col. Irrigacion, 11500 Ciudad de Mexico (Mexico); Ceron R, V., E-mail: abalba1@hotmail.com [Universidad de Guanajuato, 37670 Leon, Guanajuato (Mexico)

    2016-10-15

    Ceramic materials based on pure barium hafnate (BaHfO{sub 3}) have been obtained as a powder by the co-precipitation method. The powders obtained have a cubic structure that favors the thermoluminescent and optical properties, through which a better detection of the non-ionizing radiation is allowed. With these powders various tests were performed in the ultraviolet range at different exposure times. These thermoluminescent (Tl) studies were carried out using a Tl 3500 hand held reader which yielded a brightness curve that ranged from room temperature to the 350 degrees Celsius. This BaHfO{sub 3} response exhibits a broad brightness curve with a single peak centered around 225 degrees Celsius. Finally, is reported that there are materials of barium hafnate (BaHfO{sub 3}) doped with some rare earths (Eu, Tb) which, instead of improving the performance of the powders, decrease it, so that the use of intrinsic barium hafnate is the most appropriate. (Author)

  8. Uncertainties in the dosemeter calibration used for dosimetry in mammography; Incertezas na calibração de dosímetros utilizados para dosimetria em mamografia

    Energy Technology Data Exchange (ETDEWEB)

    Bianchi, Vivian C.R.N.; Evangelista, Claudete R.; Silva, Teógenes A. da, E-mail: vcrnb@cdtn.br [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil)

    2017-07-01

    This study aims to detail the sources of uncertainties and to estimate the combined standard uncertainties associated with the calibration procedure of dosimeters to be used in the dosimetry of X-ray bundles in mammography. A RADCAL ionization chamber, model RC6-M, and the semiconductor dosimeters UNFORS Xi and RADCAL Digitizer AGDM Accul-Gold were used. The calibration coefficients in terms of air kerma and uncertainties were obtained for the reference radiations of the W-Mo target-filter combinations. (author)

  9. Application of the Electron paramagnetic resonance to the ionizing radiation dosimetry; Aplicacion de la Resonancia paramagnetica electronica a la dosimetria de las radiaciones ionizantes

    Energy Technology Data Exchange (ETDEWEB)

    Urena N, F. [Instituto Nacional de Investigaciones Nucleares, Km. 36.5 Carretera Mexico-Toluca, 52045 Salazar, Estado de Mexico (Mexico)

    2000-07-01

    The Electron Paramagnetic Resonance (EPR) is defined as the resonant absorption of electromagnetic energy in paramagnetic substances by the spin transition of a non-pairing electron between different energy levels in presence of a magnetic field. (Slighter, 1989). One of the more important characteristic of EPR is that the electron spin levels are subdivided by the electron interaction with the magnetic dipoles of the nearby nucleus giving occasion for a spectral structure called hyperfine structure. In this kind of interactions two limit cases are distinguished: 1. when the non-pairing electron is located in a central ion surrounded of atoms belonging to coordinate molecules. 2. When a non-pairing electron interactioning in the same form with a number of equivalent nucleus, which is common in organic radicals, these will give as result spectra. Some EPR spectrometer can be used to dosimetric purposes by free radicals via. In this work, it is presented the application of EPR to dosimetry of ionizing radiations by free radicals via which allows to determinations of high doses. (Author)

  10. Analysis of the gamma criteria validation of dosimetric for VMAT; Analisis de los criterios gamma de validacion de dosimetrias para VMAT

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez Carrasco, M.; Marti Asenjo, J.; Torres Pozas, S.; Madan Rodriguez, C.; Luque Japon, L.; Godoy Cazorla, J.; Martin Olica, R.

    2013-07-01

    The simultaneous use of the variable elements of the patients, make it necessary to add a specific quality control for each treatment in addition to the quality controls newspapers of the machine. Likewise, the absence of an international or academic standard that a procedure for the validation of these treatments, justify the study of possible criteria for validation. Mannequins and computer programs used in this respect support a variety of analytical methods for the validation of the reproduction of the treatment. These methods of analysis are evaluated according to their sensitivity and specificity. (Author)

  11. Dosimetric pens: evaluation of calibration results in the Laboratorio Nacional de Metrologia das Radiacoes Ionizantes do Instituto de Radioprotecao e Dosimetria (IRD/LNMRI), RJ, Brazil

    International Nuclear Information System (INIS)

    Quaresma, D.S.; Ramos, M.M.O.; Cabral, T.S.; Peixoto, J.G.P.

    2005-01-01

    Dosimetric pens are direct reading personal dosemeters that are used in the practices of radiation protection in industries, hospitals, universities, and research institutes in the country. Quality control of measurements made with these instruments must include their periodical calibration in one of the laboratories of the Calibration Laboratory Network for Ionizing Radiation with the aim to compare the behavior of the measurements made in dosimetric pens of different models and manufacturers, submitted for calibration in the LNMRI/IRD/CNEN (Brazilian Lab for Metrology of Ionizing Radiations of the Institute for Radioprotection and Dosimetry of the Brazilian Nuclear Energy Commission), RJ or national reference laboratory and a member of the Network, in the years of 2000 to 2002. The parameters considered for the purpose of this work were: accuracy and linearity of response and measurement uncertainty evaluated. The results show that among the analyzed models there are changes in behavior

  12. Electron dosimetry in irradiation processing with rad-hard diodes; Dosimetria de eletrons em processos de irradiacao com diodos resistentes a danos de radiacao

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Thais Cavalheri dos

    2012-07-01

    This work had the aim of the development of dosimetric systems based on Si special diodes, resistant to radiation damage to online monitoring of irradiation processing using 1.5 MeV electrons energy and for relative dosimetry and clinical electron beam scanning within an energy range of 6 MeV up to 21 MeV. The diodes used were produced by Float Zone standard (FZ), Magnetic Czochralski (MCz) and epitaxy growth (EPI) methods. In order to use the diodes as detectors, they were fixed on alumina base to allow the connection of the polarization electrodes and the signals extraction. After the diode assembly on the base, each one was housed in a black acrylic probe with aluminized Mylar Registered-Sign window and LEMO Registered-Sign connector. With the devices operating in photovoltaic mode, the integration of the current signals as a function of irradiation time allowed obtain the charge produced in the sensitive volume of each diode irradiated. The electron accelerator used for high doses irradiation was the DC 1500/25/4 JOB 188 of the 1.5 MeV installed at the Radiation Technology Center of the IPEN/CNEN-SP. The current profile as function of exposure time, the response repeatability, the sensitivity as function of absorbed dose and the dose response curve were studied for each device. In comparison to FZ diode, we observed a greater decrease in the sensitivity for MCz diode, and good repeatability in both cases. Also, the increasing of the charge with the absorbed dose was well fitted by a second order polynomial function. In the EPI diode characterization, this one exhibited repeatability better than CTA dosimeters applied routinely in radiation processing. The above results indicate the potential use of these radiation hardness Si diodes in online dosimetry to high doses applications. For low doses irradiation were used the linear accelerators KD2 and Primus, both manufactured by Siemens and located at Sirio-Libanes Hospital. The diodes responses were evaluated for electron beams within the energy range of 6 MeV up to 21 MeV. The following studies were carried out: the short-term repeatability, the dose-response curve as a function of absorbed dose, the charge sensitivity as function of electron beam energy, the percentage depth dose (PPD) and the dose transversal profile. Despite the response of the diodes FZ, MCz and EPI be slightly dependent on the electron beam energy, the dosimetric response was linear in all electron beam energy range studied. In addition to this, the EPI devices showed excellent agreement with simulation performed with Monte Carlo code and the measurements performed with MatriXX Registered-Sign , confirming that the devices can be used as dosimeters in radiotherapy for scanning purposes, dose distribution mapping, constancy monitoring of calibration factor and relative dosimetry. (author)

  13. Characterization of an electronic system for Image acquisition portal to open field dosimetry; Caracterizacao de um sistema eletronico de aquisicao de imagem portal para dosimetria em radioterapia

    Energy Technology Data Exchange (ETDEWEB)

    Barbi, Gustavo L.; Oliveira, Harley F.; Bertucci, Edenyse C.; Amaral, Leonardo L.; Borges, Leandro F., E-mail: gustavobarbi@usp.br [Universidade de Sao Paulo (USP), Ribeirao Preto, SP (Brazil). Hospital das Clinicas. Centro de Ciencias das Imagens e Fisica Medica

    2012-08-15

    The objective was to characterize and enable an electronic portal imaging device (EPID) to use like a portal dosimetry device - PDI, in non-transit mode, without interposition of scattering between the beam and EPID for measurement to open fields. The images as well as the DICOM header data are extracted from software ImageJ and the information are used in the basic algorithm for converting pixel to dose. The linearity and reproducibility of response were analyzed, and the maximum deviation found of 2,3% to 800 monitor units (MU) for linearity and -0,9% for reproducibility of signal measured daily. A 512x512 matrix with a resolution of 0,8mm was established to restore the shape of beam from the image. The field size dependence was evaluated, by obtaining the ratio of total scattering of ionization chamber and EPID. Finally, a calibration factor of 28470.88{+-}170.73 pixel/cGy was established for the central area of the image. Comparative analyzes between the PDI, radiochromic film and array of ionization chambers (MatriXX) showed good agreement for fields greater then 5 x 5 cm{sup 2} to reestablishment of form field and dose, however, for fields between 3x3 cm{sup 2} and 5x5 cm{sup 2}, the agreement to shape of beam was best established by film. (author)

  14. Obtention of a thermoluminescent material for dosimetry of ionizing radiation; Obtencion de un material termoluminiscente para dosimetria de la radiacion ionizante

    Energy Technology Data Exchange (ETDEWEB)

    Gonzalez M, P R

    1990-07-01

    The thermoluminescent dosemeters are small crystals which suffer changes in their structure by the radiation effect, being displaced the electrons toward higher energy levels. On heating the previously irradiated crystals, the electrons come back to their base state emitting light photons. The light quantity emitted is proportional to the received radiation dose. The light quantity emitted is proportional to the received radiation dose. The lithium fluoride is one of the thermoluminescent materials considered as tissue equivalents by having a low effective atomic number (Z{sub ef}). At present, the more used commercial product used of this type is the TLD-100*. In this work the obtained results in the preparation of the lithium fluoride thermoluminescent material are presented. This is activated with magnesium (Mg) and titanium (Ti), which we have labelled as: LiF: Mg, Ti. The results from the tests performed for verifying his thermoluminescent properties are presented too, as powder form as in pellets form. These tests were performed in simultaneous form with TLD-100 samples, which is considered as reference. The LiF: Mg, Ti thermoluminescent material manufactured in the ININ presents similar dosimetric characteristics to those ones of the TLD-100. Therefore being able to replace the imported dosemeters. * (TLD-100 is a commercial trademark registered by Harshaw/Filtrol (US) for LiF: Mg, Ti Tl dosemeters) (Author)

  15. Thermoluminescent properties of ZrO{sub 2}:Mn for UV light dosimetry; Propiedades termoluminiscentes de ZrO{sub 2}:Mn para dosimetria de la luz UV

    Energy Technology Data Exchange (ETDEWEB)

    Rivera M, T. [Universidad Autonoma Metropolitana Iztapalapa, Deparatmento de Fisica, 09340 Mexico D.F. (Mexico); Azorin N, J. [CICATA-IPN, 11500 Mexico D.F. (Mexico); Falcony G, C. [CINVESTAV-IPN, Departamento de Fisica, 07300 Mexico D.F. (Mexico); Martinez, E.; Garcia, M. [Universidad Nacional Autonoma de Mexico, Instituto de Investigaciones en Materiales, 04510 Mexico D.F. (Mexico)

    1999-07-01

    The main source of ultraviolet light (UV) to whom is exposed the population is the one coming from the Sun, although exist some artificial sources too. The UV light can be classified in UV A (315-400)nm, in UV B (180-315) nm and UV C (100-180) nm. In this work are presented the results studying in the thermoluminescent characteristics of ZrO{sub 2}: Mn for the UV dosimetry. The studied dosimetric characteristics were: concentration effect of the doping material, erased thermal treatment, posterior thermal treatment to the irradiation, Tl curve, response in function to the wavelength, response in function to the dose and reproducibility. Finally, presenting results highly promisers for the UV light dosimetry. (Author)

  16. Electret ionization chamber: a new method for detection and dosimetry of thermal neutrons; Camara de ionizacao de eletretos: um novo metodo para deteccao e dosimetria de neutrons termicos

    Energy Technology Data Exchange (ETDEWEB)

    Ghilardi, A J.P.

    1988-12-31

    An electret ionization chamber with boron coated walls is presented as a new method for detecting thermal neutrons. The efficiency of electret ionization chambers with different wall materials for the external electrode was inferred from the results. Detection of slow neutrons with discrimination against the detection of {gamma}-rays and energetic neutrons was shown to depend on the selection of these materials. The charge stability over a long period of time and the charge decay owing to natural radiation were also studied. Numerical analysis was developed by the use of a micro-computer PC-XT. Both the experimental and numerical results show that the sensitivity of the electret ionization chamber for detection of thermal neutrons is comparable with that of the BF{sub 3} ionization chamber and that new technologies for deposition of the boron layer will produce higher efficiency detectors. (author). 102 refs, 32 fig, 10 tabs.

  17. Development of a calorimetric system for electron beam dosimetry in radiation processing; Desenvolvimento de um sistema calorimetrico para dosimetria de feixe de eletrons em processos por radiacao

    Energy Technology Data Exchange (ETDEWEB)

    Banados P, H E

    1994-12-31

    A calorimetric system for electron beam dosimetry in radiation processing was developed. The system is composed of a graphite core calorimeter, the temperature measuring and electrical calibrating instrumentation, a microcomputer and the software for the system automation. The research aimed at the optimization of the project parameters, the development of advanced methodologies for calibrating the temperature sensor, the determination of the thermal capacity as a function of the temperature, the measurement of the absorbed dose, and the development of the software needed for the system operation. The operating range extends from 0.1 kGy to 30 kGy. The uncertainty in the measurement of the absorbed dose was estimated to be {+-} 1.8% at the 95% confidence level. Comparative tests of the absorbed dose measurements were made using the IPEN electron accelerator. The results obtained showed an excellent agreement between the absorbed dose determined by the calorimeter and the absorbed dose calculated from the nominal power delivered by the accelerator. (author). 67 refs, 63 figs, 2 tabs.

  18. Traceability of a panoramic gamma irradiator using different TLD systems as transfer Instruments; Trazabilidad de un irradiador panoramico mediante sistemas de dosimetria TL

    Energy Technology Data Exchange (ETDEWEB)

    Romero, A. M.; Saez, J. C

    1994-07-01

    This work shows the calibration in terms of the new operational radiological quantities Hp (10) and H(10) for different TLD systems (Harshaw TLD-100 and Panasonic UD-002) used in personal and environmental monitoring. The irradiations were performed in the Spanish Reference Laboratory in radiation protection levels, managed by the CIEMAT Metrology of ionizing radiations Unit. With those data, different calibrations of a panoramic gamma irradiator in terms of the radiological quantity for unit of time were established, providing the traceability of the irradiator to the Reference Laboratory using the corresponding TLD systems as transfer instruments. (Author) 9 refs.

  19. Traceability of a panoramic gamma irradiator using different TLD systems as transfer instruments; Trazabilidad de un irradiador panoramico mediante sistemas de dosimetria TL

    Energy Technology Data Exchange (ETDEWEB)

    Romero, A.M.; Saez, J.C.

    1994-08-01

    This work shows the calibration in terms of the new operational radiological quantities Hp(10) and H*(10) for different TLD systems (Harshaw TLD-100 and Panasonic UD-802) used in personal and environmental monitoring. The irradiations were performed in the Spanish Reference Laboratory in radiation protection levels, managed by the CIEMAT Metrology of ionizing radiations Unit. With these data, different calibrations of a panoramic gamma irradiator in terms of the radiological quantity for unit of time were established, providing the traceability of the irradiator to the Reference Laboratory using the corresponding TLD systems as transfer instruments. (Author) 9 refs.

  20. Dosimetry of the Occupational Exposure Personnel and not exposure of the INNSZ; Dosimetria del Personal Ocupacionalmente Expuesto (POE) y no expuesto del INNSZ

    Energy Technology Data Exchange (ETDEWEB)

    Ruiz J, A [Departamento de Medicina Nuclear, Instituto nacional de la nutricion Salvador Zubiran, Mexico D.F. C.P. 14100 (Mexico)

    1999-07-01

    In this work, was measured the equivalent dose of all the personnel of Nuclear medicine and personnel of the Institute which by its activities remain in the Department, by time determined, through thermoluminescent dosemeters and the results were that the personnel presents variable equivalent dose and it is proportional to the time and radionuclide type which use for their work. By this it is allowed to secure what the work watched with respect to radiological protection to fulfil with the International Standards standing for personnel in the Institute. (Author)

  1. Interdisciplinaridade e suas práticas em documentos de "avaliação e perspectivas" do CNPq 1978, 1982

    Directory of Open Access Journals (Sweden)

    Samuel Sá

    1987-09-01

    Full Text Available In two parts, this paper deals with the theme in interdisicplinarity and its place both in programs of higher education and services as well as in the frame of health related disciplines. The first part sums up an agenda far-research of the topic. The second part advances a step further and points to the use of an interdisciplinary approach within health programs of teaching and researching: basic data were taken from secondary sources "Avaliação e Perspectivas " (CNPq - 1979 and 1982. As an anthropologist, the author looks for a social anthropoloyg-land".

  2. A educação profissional pela Pedagogia das Competências: : para além da superfície dos documentos oficiais

    Directory of Open Access Journals (Sweden)

    Ramos Marise Nogueira

    2002-01-01

    Full Text Available O texto analisa a reforma da educação profissional em curso no Brasil desde 1997, a partir do Decreto nº 2.208 e das Diretrizes e Referenciais Curriculares Nacionais da Educação Profissional de Nível Técnico, sob duas perspectivas. A primeira apreende o tensionamento do conceito de qualificação pela noção de competência, demonstrando o enfraquecimento de sua dimensão social e a despolitização de seu conteúdo. A segunda discute os limites epistemológicos, pedagógicos e metodológicos das orientações curriculares para a educação profissional baseada em competências. Demonstra as incoerências internas ao discurso oficial e se contrapõe aos seus princípios pela perspectiva materialista-dialética.

  3. Bilis humano como ofrenda al Rey: Las costumbres de Champa a finales del siglo XVI según los documentos españoles y chinos

    OpenAIRE

    Yu-Chung Lee, Fabio

    2014-01-01

    El reino de Champa, llamado Linyi en lengua china antigua, prosperó por su ubicación dentro de las rutas de comercio de China y el sureste de Asia. Con el crecimiento de Vietnam durante el siglo XV su poder disminuyó y la gente se retiró al norte del Río Mekong para resistir los ataques de las fuerzas de Cochinchina. Como resultado, es poco lo que puede encontrarse sobre la historia de Champa en obras referidas al sureste de Asia a partir del siglo XVI. Sin embargo, el reino de Champa mant...

  4. Managing one thousand designs documents: what the success of project has about that?; Gerenciando mil documentos de projetos: o que o sucesso do empreendimento tem com isso?

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Ailton C.; Pio, Bruno P. [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil)

    2008-07-01

    Project Management Techniques based on PMI- Project Management Institute have become widely disseminated with showing results in performance improvements. In this paper is presented the improvement obtained in supervising projects in gas pipeline network deployments in Northeast of Brazil by the use of project good practices. The clear definition of project phases; the use of integrated management system; the application of check lists and the prioritization of the issue/approval of documents are examples of tools that impact on the processes of management, with emphasis on control of scope, time, quality and communication. To evaluate the results obtained with the use of these tools is made a comparison between the project of deployment of City Gates TermoFortaleza (CE) and Pedras de Fogo (PB), both belonging to the Program Extension of network Northeast pipeline. (author)

  5. Una higa a los españoles. Un documento inédito de la propaganda anticatólica en la inglaterra de Isabel I (1591

    Directory of Open Access Journals (Sweden)

    Antonio Cortijo Ocaña

    2003-11-01

    Full Text Available Between the last XVI th. century years and the beginnings of XVIIth. century took place a great production of pamphlet-literature, so as political and religious literature related to the historical events envolving Spain and England . This literature has not been yet studied in depth, nor received the attentiot that it requires. The document here introduced attempts to record the events occurred inmediatly after the defeat of the Armada Invencible (1588 and, besides, echoes not only the contemporary revolts of Aragón, Cataluña and Valencia, but also an episode of the fight that took place in Lisbon between Spanish and Portuguese citizens, and finally the bad 1590's crop in Napoles.

  6. Documento de conceptualización del sistema de monitoreo del Subsistema de Áreas Marinas Protegidas en Colombia. Invemar, GEF y PNUD.

    OpenAIRE

    Batista Morales, Angélica; Gómez López, Diana Isabel; Navarrete Ramírez, Sandra Milena; Alonso, David

    2014-01-01

    En los últimos 20 años Colombia ha logrado avances importantes para la consolidación del Sistema Nacional de Áreas Protegidas -Sinap. Específicamente para el tema de Áreas Marinas Protegidas (AMP), en el año 2001, la Política Nacional Ambiental para el Desarrollo Sostenible de los Espacios Oceánicos y las Zonas Costeras e Insulares de Colombia-Pnaoci” (MMA, 2001) platea como meta especifica el establecimiento de un Subsistema de Áreas Marinas Protegidas-SAMP como parte del Sin...

  7. Aperture eutanasiche e aporie nel documento del Cortile dei Gentili “Linee propositive per un diritto della relazione di cura e delle decisioni di fine vita”

    Directory of Open Access Journals (Sweden)

    Tommaso Scandroglio

    2017-07-01

    Full Text Available SOMMARIO: 1. L’oggetto del presente contributo - 2. Bene vita e ordinamento giuridico - 3. Il Cortile dei Gentili apre all’eutanasia - 4. Pianificazione condivisa di cure e Dichiarazioni anticipate - 5. Profili di criticità delle D.a.t.

  8. Archeologia dell’edilizia storica e costruzione del documento archeologico. Problemi di popolamento mediterraneo. I. Un’archeologia del costruito per la storia del territorio medievale

    Directory of Open Access Journals (Sweden)

    Vannini, Guido

    2003-12-01

    Full Text Available Archaeological reading and stratigraphic elevation methodology allow for an original reading of material documentation and, in the case of the Mediterranean experience of this University of Florence research group, a genuinely interpretative historiographic outline. This research programme seeks to contribute to scientific and technical innovation and study methodologies. University research has aimed to establish some relationship between the stratigraphic analysis of the elevations and an understanding of social, economic, political and territorial dynamics, through territorial analysis —from settlements to castle formation— and urbanistic and archaeo-seismic analyses. To do so various methodologies have been developed and integrated in order to carry out an overall territorial analysis through light archaeology (landscape archaeology, environmental archaeology, archaeology of architecture, computing archaeology, particular excavations. An interactive database, PETRAdate, was set up to process all of the data collected. This research is one case study in a University of Florence project entitled «Feudal Mediterranean Society: Archaeological Aspects». The project analyses the architectonic production of a series of Tuscan and Mediterranean areas through a comparative procedure allowing the analysis of peculiarities and common aspects, contacts, influences and the evolution of the modality and of the medieval landscape’s formation times in the regions analysed. The historic issues studied are related to the processes of population and occupation of areas of a different feudal nature (the feudal incastellamento in Pratomagno; the territorial organization of Jordan during the Crusades; the low medieval folding of Mount Amiata; the defensive forms of the Calabrian coast over time; the system of common rule and the incastellamento of Bastia, Corsica and in Monsummano, Valdinievole. This type of study allows new documental bases to be created which can be used in historical syntheses.No disponible.

  9. El documento audiovisual en las emisoras de televisión: selección, conservación y tratamiento

    OpenAIRE

    Rodríguez-Bravo, Blanca

    2004-01-01

    Analysis of the audiovisual material’s peculiarities and its management in television information units. According with the aims of the television information centers: conservation and treatment, the main approaches for the selection of audiovisual messages are considered and some thoughts about their content analysis with a view to their retrieval are carried out.

  10. Diretrizes curriculares nacionais para o ensino médio: avaliação de documento National curriculum directives for secondary education: an evaluation of the document

    Directory of Open Access Journals (Sweden)

    Angela Maria Martins

    2000-03-01

    Full Text Available Este texto pretende oferecer algumas contribuições para o debate sobre as mudanças propostas pelas Diretrizes Curriculares Nacionais elaboradas para a reforma do ensino médio no Brasil. Na primeira parte, avalia-se o cenário político e econômico, como contexto gerador da última etapa de reformas no âmbito da educação, nos anos 90. Pretende-se questionar a opção por um modelo de reforma de estrutura (no caso brasileiro mais restrita ao Programa de Reforma da Educação Profissionalizante - PROEP e de currículo, cujos temas encontram justificativa no contexto econômico, social, cultural e político contemporâneo. Discute-se a utilização de um "modelo" que toma por base experiências desenvolvidas em outros países, e por referência teórico-metodológica as orientações internacionais de organismos multilaterais, desconsiderando as peculiaridades e injunções do sistema administrativo-político brasileiro, medida política essa que pode aumentar a tensão e a distância normalmente existentes entre programas de governo e a possibilidade de sua concretude na rede escolar. Na segunda parte, discute-se a Resolução do Conselho Nacional de Educação, da Câmara de Educação Básica, n. 3, de 16.6.98, que institui as Diretrizes Curriculares Nacionais para o ensino médio, bem como as Bases Legais - Parte I - dos Parâmetros Curriculares Nacionais para o Ensino Médio. A análise do discurso oficial toma como referência metodológica a proposição de Bardin (1977, p. 209 para os modelos de análise estrutural, procurando-se relevar os valores implícitos e as conotações dos textos legaisThis text offers some contributions to the debate on the changes proposed to the National Curricular Directives to reform secondary education in Brazil. In the first part, the political and economic scene is evaluated as the context which generated the last stage of reforms in the educational field in the 90s. It questions the option for a model of structural reform (in the Brazilian case more restricted to the Program for Reform of Professional Education - PROEP and of the curriculum, whose themes find their justification in the contemporary economic, social cultural and political context. It discusses the use of a "model" that bases itself on experiences developed in other countries and takes the international orientation of the multilateral organizations as its theoretical methodological reference, leaving out the peculiarities and injunctions of the Brazilian political administrative system. Such a policy measure can increase the tension and distance normally existing between government programs and the possibility of their real implementation in the school network. In the second part, it discusses the Resolution of the National Education Council, the Congress on Basic Education, no.3, of 16.698 that instituted the National Curricular Directives for secondary education, as well as the Legal Bases - Part I - of the National Curricular Parameters for secondary education. The analysis of official discourse takes Bardin's (1977, p. 209 proposals as its methodological reference for the models of structural analysis, seeking to make the implicit values and the connotations of the legal texts explicit

  11. La cita documental : elementos y ejemplos de referencias en los estilos de la MLA y de la APA. Documentos electrónicos ISO 690-2

    OpenAIRE

    Kolesas, Mabel; De-Volder, Carolina

    2008-01-01

    How to quote. Abridged style manual for writers of printed documents according to the Modern Language Association (MLA), the American Psychological Association (APA) and ISO 690-2 standards for E-documents.

  12. Processos de inserção profissional docente nas políticas de formação: o que documentos legais revelam

    Directory of Open Access Journals (Sweden)

    Marilia Marques Mira

    2016-08-01

    Full Text Available Este texto objetiva analisar os processos de inserção dos professores nos sistemas de ensino da educação básica, a partir do exame das políticas de desenvolvimento profissional definidas pela legislação educacional recente, como a Lei de Diretrizes e Bases da Educação Nacional 9394/96, o Plano Nacional de Educação 2001-2011 e o atual Plano Nacional de Educação 2014-2024. Para tanto, recorremos à análise documental, considerando os referenciais teóricos de Saviani (2010, 2011, 2014a, 2014b no que se refere às políticas educacionais e de Marcelo (1999, 2009, 2010, Vaillant e Marcelo (2012, Romanowski (2012, Gatti (2012, Gatti e Barreto (2009, André (2012, Cunha (2010, 2012, entre outros, no que tange à formação de professores e, especificamente, à fase de iniciação profissional docente. Os resultados mostram que a preocupação com o período de iniciação à docência é recente; só emerge, explicitamente, a partir do atual Plano Nacional de Educação (2014-2024, porém, de forma ainda embrionária. Apesar dos limites das propostas, observa-se o seu desdobramento nos Planos Estaduais de Educação. Destaca-se que as políticas traçadas precisam considerar as especificidades de cada contexto, assim como os limites impostos pela condição financeira dos estados e municípios e pelas próprias condições de formação e de trabalho dos professores.

  13. Documento de síntesis: investigación, inmigración, vivienda y ciudad. Primeros resultados la Maurina [Terrassa] y el Raval [Barcelona

    OpenAIRE

    Gutiérrez Valdivia, Blanca Alexandra

    2010-01-01

    El objetivo global de esta investigación es conocer en detalle las características de las viviendas de la población inmigrada y el uso que esta población hace de los espacios públicos de sus entornos cotidianos.

  14. Importancia del agua en la hidratación de la población española: documento FESNAD 2010

    OpenAIRE

    SALAS SALVADÓ, JORGE; C. Iglesias Rosado; A. L. Villarino Marín; J. A. Martínez; L. Cabrerizo; M. Gargallo; H. Lorenzo; J. Quiles; M. Planas; I. Polanco; D. Romero de Ávila; J. Russolillo; R. Farré; J. M. Moreno Villares; P. Riobó; Federación Española de Sociedades de Nutrición, Alimentación y Dietética (FESNAD)

    2011-01-01

    Para cualquier persona sana, la sed es una guía adecuada para tomar agua, excepto para los bebés, los deportistas y la mayoría de las personas enfermas y ancianas. En estos casos conviene programar momentos para ingerir agua, ya que la gran demanda y los mecanismos fisiológicos que determinan la sed en estas situaciones pueden condicionar desequilibrios en el balance hídrico con importantes consecuencias para la salud o el rendimiento físico o intelectual. Nuestro organismo posee una serie de...

  15. SEGUIMIENTO Y CONTROL DE BIODETERIORO MICROBIOLÓGICO EN DOCUMENTOS DE INTERÉS HISTÓRICO EN EL ARCHIVO GENERAL DE LA NACIÓN

    Directory of Open Access Journals (Sweden)

    Jenny Mateus

    2004-06-01

    Full Text Available A partir de los soportes papel (manual, bond, periódico, fotografías con gelatina como aglutinante y planos con soporte en fibra textil del Archivo General de la Nación (AGN, se realizaron diferentes pruebas de aislamiento e identificación de hongos, determinando los géneros de mayor frecuencia de aparición, y el efecto de los desinfectantes Tego51®, Timsen® a 4000 ppm (1.6 g principio activo n-alquil dimetil bencil amonio, etanol 70% y New ger® 0.7% (solución de N-duopropenida mezcla completa de yoduros de amonio cuaternario al 2.5%, sobre papel afectado y su forma de aplicación nebulización y aspersión.Igualmente a 231 fotografías con gelatina como aglutinante, tomadas del fondo del Ministerio de Obras Publicas (MOP que presentaron indicadores de biodeterioro, se realizó, aislamiento e identificación de 48 géneros siendo los más frecuentes Penicillium sp. y Cladosporium sp. y los más agresivos frente al soporte Rhizopus sp., Cladosporium sp., Aspergillus sp1, y Fusarium sp., con efecto de biodeterioro en 25 días.A partir de este estudio, se tomaron los géneros Penicillium sp., Cladosporium sp., Aspergillus sp., Rhizopus sp y se realizaron pruebas con desinfectantes (Timsen®, etanol, New ger® para determinar el efecto fungicida y su acción sobre el soporte fotográfico, evaluando 4 formas de aplicación de los desinfectantes (aspersión, inmersión, aplicación puntual y directa sobre muestras de fotografías inoculadas, determinando que la inmersión en los desinfectantes evaluados, fue el mejor método de aplicación ya que no afecta las características físicas de la imagen.Finalmente también se evaluaron 66 planos con soporte en fibra textil a partir de los cuales se aislaron e identificaron 37 géneros siendo los más frecuentes Penicillium sp. y Cladosporium sp., los cuales también demostraron alta agresividad junto con Bipolaris sp.

  16. Methodology to analyze environmental monitoring reports of desalination plants; Metodologia para el analisis de los documentos de seguimiento ambiental de las instalaciones desaladoras de agua marina

    Energy Technology Data Exchange (ETDEWEB)

    Ruis Arriaga, S.; Orozco Conti, F.; Ubaldi Freda, G. M.; Garau Hernandez, F.; Salguero Martinez, J.; Garcia Sanchez-Colomer, M.

    2010-07-01

    In this paper we propose a methodology, based on check lists, to analyze the shape and the contents of the environmental vigilance programmes and the monitoring reports related to projects of desalination plants subjects to environmental impact assessment. The aim is to obtain useful and reproducible analysis tool for detect possible faults in the environmental monitoring reports. The application of this methodology leeds up to simplify and speed up the checking of these documents by competent authority. (Author) 6 refs.

  17. Classificação do conteúdo de documentos contábeis usando aprendizagem de máquina: o caso dos fatos relevantes

    Directory of Open Access Journals (Sweden)

    Brunna Hisla da Silva Sena

    2010-01-01

    Full Text Available El análisis de contenido de textos narrativos ha sido estudiado, en los últimos años, con más frecuencia. En diversos trabajos, se verifica la pesquisa con relación a su legibili - dad, comprensibilidad y el nivel de optimismo, neutralidad y pesimismo. Pero, el análisis de clasificación en lo referente a tendencias optimistas, pesimistas y neutras ha sido efectuado de forma muy laboriosa, pues demanda un análisis humano de los textos, justificando la creación de un análisis de textos de forma más rápida y objetiva, además de la tentativa de eliminación de la subjetividad. Delante de eso, el objetivo de este trabajo es proponer una clasificación automática de hechos relevantes contables, haciéndose un análisis del contenido de textos narrativos, con la utilización de herramientas computacionales de lec - tura y clasificación de textos. La idea es procurar contribuir con un ejemplo de aplicación de aprendizaje de máquina a la Ciencia Contable. Este análisis utilizó hechos relevantes ya analizados anteriormente en el trabajo de Pereira e Silva (2008. Los hechos ya clasifica - dos fueron utilizados como conjunto de entrenamiento para el programa, para que así éste pudiese clasificar otros datos desconocidos, no clasificados.

  18. Non-destructive study of ancient documents and books by means of ion beams; Estudio no destructivo de documentos y libros antiguos mediante haces de iones

    Energy Technology Data Exchange (ETDEWEB)

    Ruvalcaba S, J.L.; Monroy, M. [IFUNAM, A.P. 20-364, 01000 Mexico D.F. (Mexico)

    2004-07-01

    In this work, a non destructive methodology for the analysis of ancient manuscripts and books using an external beam system and the techniques Particle Induced X-ray Emission Spectroscopy (PIXE) and Rutherford Backscattering Spectrometry (RBS) is presented. This application shows the analytical features of the particle accelerator based techniques for the characterization of this kind of historical materials. This methodology was used for the analysis of inks of an European book from XVII century. This is the first study in Mexico of an ancient book using simultaneously PIXE and RBS non-vacuum techniques. (Author) 21 refs., 9 figs.

  19. Libros y documentos relativos a Hernán Cortés en el fondo de raros de la John Carter Brown Library (Providence, Rhode Island, USA)

    NARCIS (Netherlands)

    Sánchez Jiménez, A.

    2008-01-01

    This article catalogs and comments the books relating to Hernán Cortés and his conquest of Mexico and New Spain that are kept in the John Carter Brown Library rare book collections. In addition, this article provides information about the John Carter Brown Fellowship program, which may be of

  20. Estructura y Funcionamiento del Cuerpo Humano. Prontuario. Guia del Maestro. Documento de Trabajo (Structure and Function of the Human Body. Handbook and Teacher's Guide. Working Document).

    Science.gov (United States)

    Puerto Rico State Dept. of Education, Hato Rey. Area for Vocational and Technical Education.

    This handbook and teacher's guide are for a 37-week course on the human body, intended for secondary or postsecondary students in allied health occupations. The syllabus lists general objectives and the number of hours and weeks devoted to each unit. A course outline is provided for five units: anatomy and physiology terminology; general…

  1. LA UTILIZACIÓN DE DOCUMENTOS DE ARCHIVO: UNA EXPERIENCIA DE INVESTIGACIÓN-ACCIÓN EN EL SUBSECTOR DE HISTORIA Y CIENCIAS SOCIALES

    Directory of Open Access Journals (Sweden)

    Carolina Villagra Bravo

    2010-01-01

    Full Text Available Esta investigación de metodología cualitativa se enfoca a describir, analizar e interpretar, el complejo fenómeno de potenciar la construcción de aprendizajes significativos de los estudiantes de segundo año medio en el Liceo Municipal Humanista Científico de la comuna de Lautaro, Región de La Araucanía. La necesidad de mejorar los aprendizajes en ciencias sociales, facilitó el diseño de un trabajo con documentación de archivo perteneciente al centro de documentación del Archivo Regional de La Araucanía3. Esto, complementado con las potentes herramientas de la investigación-acción, otorga un escenario fértil de trabajo pedagógico. Bajo esta premisa los docentes se convirtieron en investigadores en el aula, mejorando la calidad de los aprendizajes de los estudiantes participantes del estudio de caso.

  2. MINISTÉRIOS E SERVIÇOS LITÚRGICOS NUMA IGREJA TODA MINISTERIAL A MINISTERIALIDADE EM DOCUMENTOS DO MAGISTÉRIO PÓS-CONCILIAR (I

    Directory of Open Access Journals (Sweden)

    José Raimundo de Melo

    2006-01-01

    Full Text Available A multiplicidade e variedade dos serviços ministeriais que se fazem presentes na celebração litúrgica do povo de Deus é elemento chave na compreensão da comunidade cristã, pois os ministérios, em definitivo, exprimem e definem a própria realidade da Igreja. A inteira assembléia é ministerial porque a Igreja mesma é toda ministerial. E esta ministerialidade se expressa na liturgia através da diversidade de funções e ofícios que cada um é chamado a desempenhar. Ao contrário do que quase sempre sucede no mundo, porém, a hierarquia de funções na Igreja não denota prestígio e nem pode conduzir à acepção de pessoas. Ancorada na mais pura linha evangélica, deve ela indicar compromisso cristão e serviço fraterno em total doação a Deus e aos irmãos. Para uma reflexão sobre esta importante realidade eclesial, que a partir sobretudo do Concílio Vaticano II a Igreja tem aprofundado e se esforçado em viver, empreenderemos a seguir, ancorados em alguns textos litúrgicos, um estudo a respeito dos ministérios presentes no momento celebrativo da comunidade cristã. Publicamos aqui a primeira parte do artigo. ABSTRACT: The multiplicity and variety of ministerial services which are present in a liturgical celebration of the People of God is a key element in the understanding of the Christian community, since ministries, of themselves, express and define the very reality of the Church. The entire assembly is ministerial because the Church itself is all ministerial. And this ministeriality expresses itself in the liturgy through the diversity of functions and offices which each one is called on to fulfill. Contrary to what almost always happens in the world, however, the hierarchy of functions in the Church does not denote prestige, nor can it lead to the classification of persons. Anchored in the purest evangelical tradition, it should indicate Christian commitment and fraternal service in total self-giving to God and to others. For a reflection on this important ecclesial reality, which, especially from the Second Vatican Council, the Church has struggled to live out, we undertake a study – anchored in some liturgical texts – of the ministries present in the celebrative moment of the Christian community. We publish here the first part of the article.

  3. O documento fotográfico : da mediação cultural à mediação técnica

    Directory of Open Access Journals (Sweden)

    Maria do Carmo Serén

    2011-01-01

    Full Text Available The media society is a global society, nomad and dedicated to recording, which, with the practiceof digital information, led to the definition of documentality (phenomenology of social objects. As a socialdocument, the photograph depends on and exists if people believe it exists as a document – as an intention,a will and an expression. Today, the photo-document is approached as form, sign and medium. If it is arecord that is apprehended with meaning it is sharable. With digital means, operations are done in any placeand at any time; the archiving of data preservation is delocalised (no direct appropriation takes place;reading requires the interface of a machine, breaking the imbrications and continuity between traditionalsupport and inscription, now subject to the programme’s formatting, which may place interpretation atrisk. Preservation only allows for migration to another devise, what remains is a logical structure, thecapacity to reproduce. Cultural measurement has been joined by technical measurement, which graduallytakes priority.

  4. Sistema digital de catalogación y consulta de documentos académicos: Tesis, Tesinas, Proyectos de Fin de Carrera

    OpenAIRE

    Fernández García, Nicolás Luis; Carmona Poyato, Ángel; Malagón Oloya, Pablo José; Medina-Carnicer, R.; Madrid-Cuevas, F.J.

    2005-01-01

    A digital system has been developed on order to catalogue and consult academic documents: Theses, First Degree Dissertations and Technical Degree Final Projects. The system uses a listing of bibliographical subjects which makes easy the catalogue and search of theses documents. The system guarantees the copyright because the document can be consulted, but they can not be printed or copied on external devices. In addition, a cataloguing and search protocol is proposed in order to the system ca...

  5. Organização e representação do conhecimento: um estudo aplicado aos documentos de gestão da qualidade

    Directory of Open Access Journals (Sweden)

    Maria Aparecida Steinherz Hippert

    Full Text Available Este trabalho apresenta uma proposta de estrutura para organizar o conhecimento sobre materiais e serviços de construção utilizados por empresas de edificações. O trabalho tem início com uma revisão bibliográfica sobre a organização do conhecimento, utilizando o sistema de classificação facetado e as diretivas propostas pela norma ISO, para a classificação da informação na indústria da construção civil. Uma proposta de estrutura foi elaborada e aplicada na organização do conhecimento disponível no sistema de qualidade de uma pequena empresa construtora. A estrutura proposta pode ser considerada como uma estrutura genérica, que deverá ser adaptada por cada empresa interessada em aplicá-la. A ênfase do trabalho está na elaboração da estrutura segundo a classificação facetada, com o estabelecimento dos termos e conceitos relacionados a essa área do conhecimento. A proposta contribui para a reorganização e a otimização do conhecimento em construção civil, que se encontra disperso nas diversas áreas relacionadas à gestão da construção, sobretudo o conhecimento relativo aos materiais e serviços envolvidos no processo da construção.

  6. Um “documento da barbárie” : Os 30 anos do PT e as filosofias da história

    Directory of Open Access Journals (Sweden)

    Eide Sandra Azevedo Abreu

    2010-04-01

    Full Text Available

    No texto são retomadas reflexões feitas por Walter Benjamin nas teses “Sobre o conceito de história”, com o objetivo de destacar o profundo significado político da alusão que a elas foi feita em texto comemorativo dos 30 anos do Partido dos Trabalhadores.

     

  7. Entre la geometría y la iconografía : notas en los márgenes a documentos de Enric Miralles

    OpenAIRE

    Zaragoza de Pedro, Isabel

    2015-01-01

    An approach to the Enric Miralies work through his working papers, discovering between the author's life and inteliectual path, the possible linking references with his projects. The investigation is focused on the study of the creative process about his exciting work of a certain stage: the first years of the decade of the nineties. That moment coincides with a personal and professional turning point, in which his impact leads to international and in which his individual working initiates an...

  8. Nuevos documentos hebraico-aljamiados de Aragón (1. Fragmentos de un registro contable de pagos de la aljama de Tarazona

    Directory of Open Access Journals (Sweden)

    Castaño, Javier

    2004-12-01

    Full Text Available Preliminary study and transcription of the surviving fragments of an expenditures' register of the Jewish community of Tarazona (1406-1407. The forty-two entries written in Aragonese aljamía deal with payments implemented by communal officers on different issues: fiscal disbursements, communal defence expenses and public debt, trial and execution of an informer, religious expenses (maintenance of buildings and charity institutions, officers' salaries, and payment of the Sukkot arba‘ah minim. Especially relevant are the references to dependence relations regarding the Saragossa Jewish community.

    Estudio introductorio con transcripción de los fragmentos de un registro contable de 1406 y 1407 de los pagos de la aljama de Tarazona (Aragón. Los cuarenta y dos cargos anotados en aljamía romance aragonesa, que incluye interesantes detalles léxicos, proporcionan información acerca de pagos realizados por oficiales de la aljama sobre asuntos diversos: fiscalidad y gastos de defensa de la aljama, su endeudamiento, el proceso y la ejecución de un malsín, gastos de sus instituciones religiosas y de asistencia social, sueldos de oficiales y pago por la aljama de las «cuatro especies» utilizadas en Sucot. Especialmente importantes son las referencias a la relación de dependencia respecto de la judería de Zaragoza.

  9. Gestión de documentos electrónicos : oportunidades y riesgos de la Administración electrónica

    OpenAIRE

    Sánchez Pérez, María Nieves

    2015-01-01

    [ES] La implementación de la Administración electrónica está siendo un proceso muy lento y desigual en España, a pesar del extendido uso de las tecnologías de la información y la comunicación; pero si se quiere tener éxito es indispensable la existencia de una gestión documental previa, eficaz y eficiente, que se convierta en un proceso garante del cumplimiento de derechos y obligaciones a los que están sujetos tanto la ciudadanía como las instituciones públicas y privadas. El papel que los a...

  10. Remontando el río, remontando el tiempo: documentos para una historia medioambiental de la cuenca del Tempisque en la primera mitad del siglo XX.

    OpenAIRE

    Pizarro Méndez, Yanina

    2012-01-01

    Resumen Hacia principios del siglo XX, un viajero de ocasión, a su paso por Los Jocotes, localidad ubicada al norte de Filadelfia, en la provincia de Guanacaste -Costa Rica-, entre impasible y molesto por las peripecias del viaje, remarcaba las muchas dificultades provocadas por el frecuente encallamiento de las embarcaciones, atascadas en los bancos de arena que amodorraban el curso del río Tempisque. Una y otra vez refería la irritante situación de ?vadeo? o empleo de sogas para procurar e...

  11. Aplicación web para la creación y gestión de textos multimedia docentes a partir de documentos PDF

    OpenAIRE

    Gómez Moreno, Jesús María

    2017-01-01

    Este proyecto tiene como finalidad la elaboración de materiales docentes transversales que puedan ser utilizados por profesores de diferentes materias en niveles específicos de la formación académica universitaria. Para ello se parte del diseño de una herramienta informática que permita el trabajo colaborativo y la generación de este material en un formato hipertextual. Estos hipertextos serán por lo tanto el resultado de la interacción de diferentes disciplinas: literatura, teoría de ...

  12. Primeras aproximaciones a la anotación lingüístico-ontológica de documentos de Web Semántica: OntoTag

    OpenAIRE

    Aguado de Cea, G.; Álvarez de Mon Rego, I.; Pareja-Lora, A.

    2003-01-01

    A instancias de lo que se ha dado en llamar la Web Semántica, la Inteligencia Artificial ha investigado exhaustivamente la anotación semántica de páginas web. La anotación (semántica) de textos se desarrolló primeramente en la Lingüística de Corpus; sin embargo, la Inteligencia Artificial, al centrarse en una anotación basada en ontologías, parece haber pasado por alto sus resultados. Este artículo muestra nuestras primeras experiencias en la integración de ambos campos, según las cuales una ...

  13. Perspectivas Pedagogicas. Documentos-Ponencias Y Ensayos Proyecto Teacher Corps, Ciclo XII (Pedagogical Perspectives. Documents, Papers and Essays, Teacher Corps Project, Cycle XII).

    Science.gov (United States)

    Albino, Isidra, Ed.; Davila, Sonia, Ed.

    The purpose of this book is to stimulate ideas leading to a sharing of approaches, strategies, and methodologies applicable to the education of Puerto Ricans. Following introductory material, 18 papers are presented, the first 10 of which are in Spanish. Titles and authors are: (1) "El maestro que Puerto Rico necesita," Leonides Santos…

  14. Nas sendas de Sérgio Buarque de Holanda documentos sobre uma expedição Florentina à Amazônia, em 1608

    Directory of Open Access Journals (Sweden)

    Carlos Alberto de Moura Ribeiro Zeron

    2000-12-01

    Full Text Available After the initiatives by Sérgio Buarque de Holanda, this article gathers some documents found in the Archivio di Stato from Florence which attest definitely the reality of the attempt of colonization of the Amazon basin by the Grand Duke of Florence Ferdinand I in the beginning of the 17th century. Those documents expose the circumstances of the enterprise through its preparation, the realization and the results of the expedition, as well as through the diplomatic negociations which preceded it.

  15. El obrar gráfico de Eduardo Molinari sobre los documentos fotográficos del Archivo General de la Nación (Buenos Aires

    Directory of Open Access Journals (Sweden)

    María Guillermina Fressoli

    2015-12-01

    Full Text Available This article aims to study El cuchillo, an exhibition held by Eduardo Molinari at the National General Archive in 2000. This is a crucial work in the artistic development of Molinari’s oeuvre, due to the inclusion of photography and graphic materials in his plastic thought. This also requires and involves a deployed view with which the artist has built some critical ways of memory. In this article, I examine the different interventions that the artist made over the established ways of use and different kinds of documental photography. My aim is to recognize that through El cuchillo, the artist shows two perceptual regimes that are in dispute. These regimes are two different ways of understanding History.

  16. The Materials science and it application in the study of historical documents; La ciencia de los Materiales y su aplicacion en el estudio de documentos historicos

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez L, V. [CUV, BUAP, 72540 Puebla (Mexico); Arenas A, J. [IFUNAM, 04510 Mexico D.F. (Mexico); Sotelo S, L.E. [Centro de Estudios Mayas, IIF, UNAM (Mexico); Mendoza A, D. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

    2005-07-01

    Antique manuscripts wrote before and after of conquest of Mexico have enormous values, for they constitute, in many cases, the only source of important events before and after of the New Spain conquest. Therefore the studies and conservation by adequate methods are very important to guarantee their existence for a long time. The Material Science has attained an increasingly important role in historical manuscripts analysis and preservation, since thanks to this have been incorporated analytic techniques more sensitive and less more destructive of documents. As example, in this work we present a study on some historical manuscripts (Grolier and Techialoyan codices and books of XVI and XIX centuries) using techniques as Low Vacuum Scanning Electron Microscopy (LV-Sem), Energy Dispersive X-ray Spectroscopy (EDS), Fourier Transformed Infrared Spectroscopy (Ftir), tensile stress probes and the use of gamma irradiation as sterilization method. A discussion about suffered detriment due to not controlled microorganism growth and environmental exposition since they were created and the cautions taken in this study are presented. (Author)

  17. Manual Laboratorio de Microbiologia. Documento de trabajo Programa de Educacion en Ocupaciones de Salud (Microbiology Laboratory Manual. Curriculum Document. Program of Education in Health Occupations).

    Science.gov (United States)

    Puerto Rico State Dept. of Education, Hato Rey. Area for Vocational and Technical Education.

    This laboratory manual on microbiology begins with an introduction relating the study of microorganisms to health occupations education and stressing the importance of teaching critical thinking. The introduction is followed by general instructions for the use of the manual and an illustration of hand washing procedures. The 13 laboratory…

  18. Prontuario para la Ensenanza del Curso Asistente de Salud en el Hogar. Documento de Trabajo (Handbook for the Home Health Aide Course. Working Document).

    Science.gov (United States)

    Puerto Rico State Dept. of Education, Hato Rey. Area for Vocational and Technical Education.

    This handbook is intended for a 2-year secondary course for home health aides. Introductory information includes a description of the occupation, prerequisites, general objectives, and a chart depicting the number of hours and weeks devoted to each unit. The course outline covers 12 units: (1) the occupation of home health aide; (2) principles of…

  19. Documentos para a história do mais antigo jardim zoológico do Brasil: o parque zoobotânico do Museu Goeldi

    Directory of Open Access Journals (Sweden)

    Nelson Sanjad

    Full Text Available O trabalho contextualiza a criação do Parque Zoobotânico do Museu Paraense Emílio Goeldi, em Belém (PA, no ano de 1895, considerado o mais antigo zoológico brasileiro. Apresenta duas raras fontes históricas sobre o Parque, um artigo de 1897 do zoólogo alemão Hermann Meerwarth (1870-1943, Auxiliar Científico de Zoologia e Inspetor do Jardim Zoológico do Museu Goeldi entre agosto de 1895 e abril de 1899; e um livro de 1901 do zoólogo suíço Gottfried Hagmann (1874-1946, que ocupou os mesmos cargos entre novembro de 1899 e meados de 1904. Ambos os textos são relatórios técnicos originalmente publicados em alemão, foram traduzidos para o português e atualizados do ponto de vista taxonômico. Eles permitem não apenas a realização de estudos sobre o Parque Zoobotânico do Museu Goeldi, como também sobre os jardins zoológicos em geral, além de leituras específicas nas áreas de história da ciência, história ambiental, museologia, arquitetura, educação ambiental e comunicação científica.

  20. Arquivo, documento e memória na concepção discursivaArchive, document and memory in the discursive conception

    Directory of Open Access Journals (Sweden)

    Ludmila Ferrarezi

    2007-01-01

    Full Text Available Esse artigo intenta, à luz da teoria do discurso, visitar a noção de arquivo, buscando compreender como os sentidos sobre ele constituem um lugar científico já consolidado e como é possível um diálogo com a concepção de discurso. Para tal, interpretamos um corpus colhido na página eletrônica do Movimento dos Trabalhadores Rurais SemTerra.This article attempts, to the light of the theory of the speech, to visit the file notion, looking for to understand as the senses on aim constitutes a scientific place consolidated already and as it is possible a dialogue with the speech conception. For such, weinterpreted a corpus picked in the electronic page of the Movement of the LandlessWorkers.