WorldWideScience

Sample records for craton del rio

  1. Mesoarchean sanukitoid rocks of the Rio Maria Granite-Greenstone Terrane, Amazonian craton, Brazil

    Science.gov (United States)

    de Oliveira, Marcelo Augusto; Dall'Agnol, Roberto; Althoff, Fernando Jacques; da Silva Leite, Albano Antonio

    2009-02-01

    The Archean sanukitoid Rio Maria Granodiorite yielded zircon ages of ˜2.87 Ga and is exposed in large domains of the Rio Maria Granite-Greenstone Terrane, southeastern Amazonian craton. It is intrusive in the greenstone belts of the Andorinhas Supergroup, in the Arco Verde Tonalite and Caracol Tonalitic Complex (older TTGs). Archean potassic leucogranites, younger TTGs and the Paleoproterozoic granites of Jamon Suite are intrusive in the Rio Maria Granodiorite. The more abundant rocks of the Rio Maria Granodiorite have granodioritic composition and display medium to coarse even-grained textures. These rocks show generally a gray color with greenish shades due to strongly saussuritized plagioclase, and weak WNW-ESE striking foliation. The significant geochemical contrasts between the occurrences of Rio Maria Granodiorite in different areas suggest that this unit corresponds in fact to a granodioritic suite of rocks derived from similar but distinct magmas. Mingling processes involving the Rio Maria Granodiorite and similar mafic to intermediate magmas are able to explain the constant occurrence of mafic enclaves in the granodiorite. The associated intermediate rocks occur mainly near Bannach, where mostly quartz diorite and quartz monzodiorite are exposed. The dominant rocks are mesocratic, dark-green rocks, with fine to coarse even-grained texture. The Rio Maria Granodiorite and associated intermediate rocks show similar textural and mineralogical aspects. They follow the calc-alkaline series trend in some diagrams. However, they have high-Mg#, Cr, and Ni conjugate with high contents of large ion lithophile elements (LILEs), typical of sanukitoids series. The patterns of rare earth elements of different rocks are similar, with pronounced enrichment in light rare earth elements (LREEs) and strong to moderate fractionation of heavy rare earth elements (HREEs). Field aspects and petrographic and geochemical characteristics denote that the granodiorites and

  2. Mesoproterozoic evolution of the Rio de la Plata Craton in Uruguay: at the heart of Rodinia?

    DEFF Research Database (Denmark)

    Gaucher, Claudio; Frei, Robert; Chemale, Farid

    2011-01-01

    Mesoproterozoic volcanosedimentary units and tectonic events occurring in the Ri´o de la Plata Craton (RPC) are reviewed. A belt consisting of volcanosedimentary successions exhibiting greenschist-facies metamorphism is exposed in the eastern RPC (Nico Pe´rez Terrane) in Uruguay. The Parque UTE G...

  3. EKA urbanistika osakond / Lilia del Rio

    Index Scriptorium Estoniae

    Rio, Lilia del

    2006-01-01

    Lilia del Rio magistritöö "Beyond the player's manual / Mänguõpetus edasijõudnutele. Experiencing the world (and the city) as a playground / Kogedes maailma (ja linna) mänguväljakuna". Juhendaja Andres Kurg

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

    Science.gov (United States)

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

    1998-01-01

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

  5. Geochemistry of komatiites and basalts from the Rio das Velhas and Pitangui greenstone belts, São Francisco Craton, Brazil: Implications for the origin, evolution, and tectonic setting

    Science.gov (United States)

    Verma, Sanjeet K.; Oliveira, Elson P.; Silva, Paola M.; Moreno, Juan A.; Amaral, Wagner S.

    2017-07-01

    The Neoarchean Rio das Velhas and Pitangui greenstone belts are situated in the southern São Francisco Craton, Minas Gerais, Brazil. These greenstone belts were formed between ca. 2.79-2.73 Ga, and consist mostly of mafic to ultramafic volcanics and clastic sediments, with minor chemical sediments and felsic volcanics that were metamorphosed under greenschist facies. Komatiites are found only in the Rio das Velhas greenstone belt, which is composed of high-MgO volcanic rocks that have been identified as komatiites and high-Mg basalts, based on their distinctive geochemical characteristics. The Rio das Velhas komatiites are composed of tremolite + actinolite + serpentine + albite with a relict spinifex-texture. The Rio das Velhas komatiites have a high magnesium content ((MgO)adj ≥ 28 wt.%), an Al-undepleted Munro-type [(Al2O3/TiO2)adj and (CaO/Al2O3)adj] ratio ranging from 27 to 47 and 0.48 to 0.89, relatively low abundances of incompatible elements, a depletion of light rare earth elements (LREE), a pattern of non-fractionated heavy rare- earth elements (HREE), and a low (Gd/Yb)PM ratio (≤ 1.0). Negative Ce anomalies suggest that alteration occurred during greenschist facies metamorphism for the komatiites and high-Mg basalts. The low [(Gd/Yb)PM 18] and high HREE, Y, and Zr content suggest that the Rio das Velhas komatiites were derived from the shallow upper mantle without garnet involvement in the residue. The chemical compositions [(Al2O3/TiO2)adj, (FeO)adj, (MgO)adj, (CaO/Al2O3)adj, Na, Th, Ta, Ni, Cr, Zr, Y, Hf, and REE] indicate that the formation of the komatiites, high-Mg basalts and basalts occurred at different depths and temperatures in a heterogeneous mantle. The komatiites and high-Mg basalts melted at liquidus temperatures of 1450-1550 °C. The Pitangui basalts are enriched in the highly incompatible LILE (large-ion lithophile elements) relative to the moderately incompatible HFS (high field strength) elements. The Zr/Th ratio ranging from 76 to

  6. The Cauaburi magmatic arc: Litho-stratigraphic review and evolution of the Imeri Domain, Rio Negro Province, Amazonian Craton

    Science.gov (United States)

    Carneiro, Marcia C. R.; Nascimento, Rielva S. C.; Almeida, Marcelo E.; Salazar, Carlos A.; Trindade, Ivaldo Rodrigues da; Rodrigues, Vanisse de Oliveira; Passos, Marcel S.

    2017-08-01

    A lithostratigraphic review of the Cauaburi Complex was carried out by means of field, tectono-metamorphic and geochemical data, which were the basis for the sub-division of the Cauaburi Complex orthogneisses into the Santa Izabel do Rio Negro, Cumati and São Jorge facies. These rocks crop out between São Gabriel da Cachoeira and Santa Izabel do Rio Negro, Amazonas, Brazil. The gneisses of the Santa Izabel do Rio Negro and Cumati facies are metaluminous and of calc-alkaline affinity; in turn, the rocks of the São Jorge facies are peraluminous and of alkaline affinity. They vary from (amphibole)-biotite granodiorites/monzogranites (Cumati and Santa Izabel do Rio Negro facies) to spessartite-bearing biotite monzogranites (São Jorge facies). The Cauaburi Complex geochemical signature is compatible with that of granites generated in collisional settings (magmatic arc?) and its evolution is related to three distinct tectono-metamorphic events: D1, causing foliation S1, which developed during the Cauaburi Complex syn-tectonic emplacement in the Cauaburi Orogeny; D2/M2, causing foliation S2, which was generated under amphibolite facies conditions (717.9 °C and 5.84 kbars), and the emplacement of I- and S-type granite during the Içana Orogen, and low-temperature D3, associated with the K'Mudku Event, which caused foliation S3 and reworking via transcurrent shear zones under greenschist facies conditions.

  7. Respiracion del suelo en una comunidad sucesional de pastizal del bosque altoandino en la cuenca del rio Pamplonita, Colombia

    National Research Council Canada - National Science Library

    Murcia-Rodriguez, Miguel Antonio; Ochoa-Reyes, Martha Patricia

    2008-01-01

    Se determino la respiracion del suelo (RS) en una comunidad sucesional de pastizal de Holcus lanatus y Anthoxanthum odoratum en la franja altoandina de la cuenca del rio Pamplonita, Norte de Santander, Colombia...

  8. Rhyacian evolution of the eastern São Luís Craton: petrography, geochemistry and geochronology of the Rosário Suite

    Directory of Open Access Journals (Sweden)

    Bruna Karine Correa Nogueira

    Full Text Available ABSTRACT: The São Luís Cráton comprises an area between northeast Pará state and northwest Maranhão that exposes Paleoproterozoic granitic suites and meta-volcanosedimentary sequences. In the east of this geotectonic unit, about 70 km south of São Luís, there is a portion of the São Luís Craton, represented by the intrusive Rosario Suite (RS. This work is focused on rocks of this suite, including petrographic, lithochemical and geochronological studies to understand the crustal evolution of these granitoid rocks. The rock spectrum varies from tonalitic to granodioritic, quartz dioritic and granitic compositions, and there are partial structural and mineralogical changes related to deformation along transcurrent shear zones. The geochemical studies show granitic metaluminous compositions of the calc-alkaline series with I-type affinity typical of magmatic arc. Rare earth elements show marked fractionation and slight Eu positive or negative anomalies (Eu/Eu* = 0.82 to 1.1. Zircon U-Pb data provided consistent ages of 2165 ± 7 Ma, 2170 ± 7 Ma, 2170 ± 7 Ma, 2161 ± 4 Ma and 2175 ± 8 Ma, dating emplacement of these granitoids as Paleoproterozoic (Rhyacian. Sm-Nd isotopic data provided model ages (TDM of 2.21 to 2.31 Ga with positive values of εNd +1.9 to +3.2 (t = 2.17 Ga, indicating predominantly Rhyacian crustal sources for the parental magmas, similar to those ones found in other areas of the São Luís Craton. The data, integrated with published geological and geochronological information, indicate the occurrence of an important continental crust formation event in this area. The Paleoproterozoic evolution between 2.17 and 2.15 Ga is related to the Transamazonian orogeny. The granitoids of the Rosario Suite represent the main phase of continental arc magmatism that has continuity in other parts of the São Luís Craton and can be correlated with Rhyacian accretionary magmatism in the northwestern portion of the Amazonian Craton that

  9. Estimacion de contenido de carbono en la cuenca del rio Magdalena, Mexico

    National Research Council Canada - National Science Library

    Galeana-Pizana, Jose Mauricio; Ordonez-Diaz, Jose Antonio Benjamin; Corona-Romero, Nirani

    2013-01-01

    En el presente estudio se estimo el contenido de carbono de la biomasa aerea de seis tipos de cobertura vegetal en la cuenca del rio Magdalena, ubicada en el suelo de conservacion del Distrito Federal...

  10. La costa del rio Parana: cultura, naturaleza y territorio: apuntes para su interpretacion y proyecto

    National Research Council Canada - National Science Library

    Bertuzzi, Maria Laura

    2009-01-01

    ...: un fragmento de la costa fluvial del rio Parana. Esta area fue historicamente desplazada del interes provincial convirtiendose en periferia de produccion y comunicacion a pesar de sus magnificas condiciones medioambientales...

  11. Cratons' thermal state in China

    Science.gov (United States)

    He, Lijuan; Zhang, Linyou

    2017-04-01

    There are three cratons in China, the North China Craton, the Tarim Craton, and the Yangtze Craton. Each craton has experienced complicated evolution histories since their formation, presents distinct thermal regime, and displays different stability. The Tarim Craton keeps its stability till now. The eastern North China Craton has been destructed in the Mesozoic, but the western North China Craton still stable. The stability of the Yangtze craton is a controversial issue, and the newest study believed it experienced similar tectono-thermal events as the North China Craton and has also been destructed in the Mesozoic. Several sedimentary basins developed in these cratons, and most of them are rich of oil-gas resources. These basins have different formation mechanism and experienced distinct tectono-thermal evolution, which resulted in individual thermal histories. The sedimentary basins have recorded distinct thermal evolution of these craton. We analyze the heat flow data, lithospheric thermal thickness, basins' thermal histories together with tectono-thermal events in these cratons, with aim to provide ideas for geodynamical mechanism on the craton stability/destruction, as well as implications for hydrocarbon generation.

  12. Morfologia y conservacion de la tortuga hicotea mesoamericana del rio Atrato, Colombia

    National Research Council Canada - National Science Library

    Ceballos, Claudia P; Brand, William A

    2014-01-01

    Las relaciones filogeneticas de la tortuga hicotea mesoamericana, Trachemys venusta, que habita la cuenca del rio Atrato en Colombia ha sido controversial dado que tres subespecies diferentes han sido...

  13. Geology, geochemistry, and geochronology (U-Pb) of the Rio Fortuna Gneiss - Serra do Bau intrusive Suite - Paragua Terrane SW Amazonian Craton

    Energy Technology Data Exchange (ETDEWEB)

    Faria, Debora Almeida; Ruiz, Amarildo Salina; Matos, Joao Batista; Sousa, Maria Zelia Aguiar de; Lima, Gabrielle Aparecida de [Research Group on Crustal and Tectonic Evolution, Guapore, RS (Brazil); Universidade Federal de Mato Grosso (ICET/UFMT), Cuiaba, MT (Brazil). Instituto de Ciencias Exatas e da Terra; Inst. Nacional de Ciencia e Tecnologia de Geociencias da Amazonia (GEOCIAM), Belem, PA (Brazil); Moacir Jose Buenano Macambira, E-mail: defaal.debora@gmail.com, E-mail: gabilimagel@gmail.com, E-mail: asruiz@gmail.com, E-mail: jmatos@ufmt.br, E-mail: prof.mzaguiar@gmail.com, E-mail: moamac@ufpa.br [Research Group on Crustal and Tectonic Evolution, Guapore, RS (Brazil); Universidade Federal do Para (UFPA), Belem, PA (Brazil)

    2014-07-01

    The Rio Fortuna Gneiss crops out in the Serra Santa Barbara, near the Fortuna military headquarters, on the Brazil-Bolivia border. These orthogneisses are located in a portion of the Paragua terrain affected by the Sunsas Orogeny (1.0-0.9 Ga.). They are classified as monzo to granodiorite orthogneisses and underwent at least three episodes of deformation. The U-Pb zircon age of 1,711 ± 13 Ma obtained by laser ablation MC-ICP-MS is interpreted as the crystallization age of this orthogneiss. Geochemically, these rocks form a sequence comprising acidic subalkaline magmatism, calc-alkalic-type high-K, and metaluminous to peraluminous. (author)

  14. Trans-Amazonian U-Th-Pb monazite ages and P-T-d exhumation paths of garnet-bearing leucogranite and migmatitic country rock of the southeastern Tandilia belt, Rio de la Plata craton in Argentina

    Science.gov (United States)

    Martínez, Juan Cruz; Massonne, Hans-Joachim; Frisicale, María Cristina; Dristas, Jorge A.

    2017-03-01

    A garnet-bearing leucogranite and two country rocks from the Transamazonian Tandilia belt of the Rio de la Plata craton were studied in detail. The leucogranite contains garnet with homogeneous composition of pyr6(gros + andr)2spes5alm87. In a garnet-biotite migmatite, the core and rim compositions of garnet are pyr1.7(gros + andr)5spes5.6alm87.7 and pyr1.2(gros + andr)5.5spes6.7alm86.6, respectively. These compositions in a sillimanite-garnet-muscovite migmatite are pyr4(gros + andr)2.7spes2.7alm90.6 and pyr2.7(gros + andr)4spes3.2alm90.1, respectively. We used this information to decipher the P-T evolution of the rocks applying P-T and T-H2O pseudosections with the PERPLE_X computer software package taking into consideration deformational microstructures. The leucogranite records an isothermal decompression from 5.3 to 3.8 kbar at 665 °C. The garnet-biotite migmatite was exhumed from 5.5 kbar at 630 °C to 4.3 kbar at 615 °C and the sillimanite-garnet-muscovite migmatite from supersolidus conditions of 670 °C and 3.6 kbar to 625 °C at 2.4 kbar. Late andalusite formed in this rock. Seventy four analyses of 28 monazite grains of the country rocks yielded three groups of U-Th-Pb ages which were related to a collisional event (I: ca. 2.13-2.14 Ga.), a postcollisional thermal overprint (II: ca. 2.01 Ga) and slow cooling of the orogen (III: 1.80-1.90 Ga). Inherited ages of 2.28 and 2.25 Ga could refer to an early accretionary stage of the orogen. An age of 2.41 Ga indicates the presence of recycled Siderian continental crust. Synkinematic crystallization of melts and the subsolidus development of an S2-foliation, demonstrated by deformational microstructures, occurred during the exhumation of the studied area from depths of 18 km to 8 km in the time interval 2.01-1.90 Ga.

  15. 78 FR 74008 - Amendment of Class E Airspace; Del Rio, TX

    Science.gov (United States)

    2013-12-10

    ... at Laughlin AFB, Del Rio, TX. An additional segment to the north is needed to contain approach... AIRSPACE AREAS; AIR TRAFFIC SERVICE ROUTES; AND REPORTING POINTS 0 1. The authority citation for 14 CFR....1 of the Federal Aviation Administration Order 7400.9X, Airspace Designations and Reporting Points...

  16. 78 FR 52716 - Proposed Amendment of Class E Airspace; Del Rio, TX

    Science.gov (United States)

    2013-08-26

    ..., Del Rio, TX. An additional segment to the north is needed to contain approach category E military...--DESIGNATION OF CLASS A, B, C, D, AND E AIRSPACE AREAS; AIR TRAFFIC SERVICE ROUTES; AND REPORTING POINTS 0 1... by reference in 14 CFR 71.1 of FAA Order 7400.9W, Airspace Designations and Reporting Points, dated...

  17. Craton destruction and related resources

    Science.gov (United States)

    Zhu, Rixiang; Zhang, Hongfu; Zhu, Guang; Meng, Qingren; Fan, Hongrui; Yang, Jinhui; Wu, Fuyuan; Zhang, Zhiyong; Zheng, Tianyu

    2017-10-01

    Craton destruction is a dynamic event that plays an important role in Earth's evolution. Based on comprehensive observations of many studies on the North China Craton (NCC) and correlations with the evolution histories of other cratons around the world, craton destruction has be defined as a geological process that results in the total loss of craton stability due to changes in the physical and chemical properties of the involved craton. The mechanisms responsible for craton destruction would be as the follows: (1) oceanic plate subduction; (2) rollback and retreat of a subducting oceanic plate; (3) stagnation and dehydration of a subducting plate in the mantle transition zone; (4) melting of the mantle above the mantle transition zone caused by dehydration of a stagnant slab; (5) non-steady flow in the upper mantle induced by melting, and/or (6) changes in the nature of the lithospheric mantle and consequent craton destruction caused by non-steady flow. Oceanic plate subduction itself does not result in craton destruction. For the NCC, it is documented that westward subduction of the paleo-Pacific plate should have initiated at the transition from the Middle-to-Late Jurassic, and resulted in the change of tectonic regime of eastern China. We propose that subduction, rollback and retreat of oceanic plates and dehydration of stagnant slabs are the main dynamic factors responsible for both craton destruction and concentration of mineral deposits, such as gold, in the overriding continental plate. Based on global distribution of gold deposits, we suggest that convergent plate margins are the most important setting for large gold concentrations. Therefore, decratonic gold deposits appear to occur preferentially in regions with oceanic subduction and overlying continental lithospheric destruction/modification/growth.

  18. Vulnerabilidad en la cuenca alta del rio Lerma

    OpenAIRE

    Cedeño Valdiviezo, Alberto; Torres Lima, Pablo

    2013-01-01

    La subcuenca Alta del Río Lerma en el Estado de México, importante abastecedor de agua para la Ciudad de México, ha estado expuesta a una fuerte contaminación en los últimos años, misma que ha tenido como consecuencia el Cambio Climático y los consecuentes problemas de salud pública que se están manifestando de diferentes maneras. No obstante, el Estado Mexicano insiste en seguir apoyando a empresas trasnacionales asociadas al cultivo de transgénicos, producción de plaguicidas, pesticidas y P...

  19. Mesohabitats, fish assemblage composition, and mesohabitat use of the Rio Grande silvery minnow over a range of seasonal flow regimes in the Rio Grande/Rio Bravo del Norte, in and near Big Bend National Park, Texas, 2010-11

    Science.gov (United States)

    Moring, J. Bruce; Braun, Christopher L.; Pearson, Daniel K.

    2014-01-01

    In 2010–11, the U.S. Geological Survey (USGS), in cooperation with the U.S. Fish and Wildlife Service, evaluated the physical characteristics and fish assemblage composition of mapped river mesohabitats at four sites on the Rio Grande/Rio Bravo del Norte (hereinafter Rio Grande) in and near Big Bend National Park, Texas. The four sites used for the river habitat study were colocated with sites where the U.S. Fish and Wildlife Service has implemented an experimental reintroduction of the Rio Grande silvery minnow (Hybognathus amarus), a federally listed endangered species, into part of the historical range of this species. The four sites from upstream to downstream are USGS station 08374340 Rio Grande at Contrabando Canyon near Lajitas, Tex. (hereinafter the Contrabando site), USGS station 290956103363600 Rio Grande at Santa Elena Canyon, Big Bend National Park, Tex. (hereinafter the Santa Elena site), USGS station 291046102573900 Rio Grande near Ranger Station at Rio Grande Village, Tex. (hereinafter the Rio Grande Village site), and USGS station 292354102491100 Rio Grande above Stillwell Crossing near Big Bend National Park, Tex. (hereinafter the Stillwell Crossing site).

  20. Summary of a Gas Transport Tracer Test in the Deep Cerros Del Rio Basalts, Mesita del Buey, Los Alamos NM.

    Energy Technology Data Exchange (ETDEWEB)

    Stauffer, Philip H. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Rahn, Thomas A. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Ortiz, John Philip [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Salazar, Larry Joseph [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Boukhalfa, Hakim [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Snyder, Emily Elisabeth [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2018-01-16

    Here we describe results from a tracer test in the Cerros del Rio basalt beneath Mesita del Buey, Technical Area 54 (TA-54) at Los Alamos National Laboratory (LANL or the Laboratory). This report follows from plans outlined in our previous Tracer Test Work Plan (LANL 2016). These activities were conducted by LANL to further characterize subsurface properties of the Cerros del Rio basalts at Material Disposal Area (MDA) L (Figure 1.1-1). The work presented follows from the “Interim Measures Work Plan for Soil-Vapor Extraction of Volatile Organic Compounds from Material Disposal Area L, Technical Area 54, Revision 1,” submitted to the New Mexico Environment Department (NMED) in September 2014 (LANL 2014). Remediation of the MDA L vapor plume by soil-vapor extraction (SVE) is recommended as part of the final remedy in the “Corrective Measures Evaluation Report for Material Disposal Area L, Solid Waste Management Unit 54-006, at Technical Area 54, Revision 2” to meet a remedial action objective of preventing groundwater from being impacted above a regulatory standard by the transport of volatile organic compounds (VOCs) to groundwater through soil vapor (LANL 2011).

  1. Aves de la Ribera Colombiana del Rio Negro (Frontera de Colombia y Venezuela Aves de la Ribera Colombiana del Rio Negro (Frontera de Colombia y Venezuela

    Directory of Open Access Journals (Sweden)

    Dugand Armando

    1948-12-01

    Full Text Available The authors list 77 species and subspecies of birds collected on the Colombian bank of the Rio Negro, one of the larger northern tributaries of the Amazon. The Rio Negro, known as Guainía ("Huaynía" in the upper part of its course, forms the natural border of Colombia and Venezuela before entering the territory of Brazil. Of the birds listed, 74 were taken by Manuel Castro for the Coleccion ornitológica Phelps (Caracas, Venezuela, at San Felipe (opposite San Carlos, -Venezuela and Macacuní (opposite El Carmen, Venezuela in August-September, 1947. The authors also record the birds collected by Ernest G. Holt, Emmet R. Blake, and Charles T. Agostini in January, 1931, opposite San Carlos, Venezuela, i. e. San Felipe, Colombia. Among the nine species secured by these collectors three are not represented in Castro's 1947 collection. Sixteen birds are recorded as new to the avifauna of Colombia. The introduction of the paper mentions the naturalists who have explored the Rio Negro and the Guainía since Humboldt's celebrated voyage in 1800, and includes geographical notes, a map, and a brief description of the ecology of the region. Los autores enumeran 77 especies y subespecies de aves coleccionadas en la ribera colombiana del rio Negro, uno de los mayores afluentes septentrionales del Amazonas. El rio Negro, llamado Guainía ("Huaynía" en la parte superior de su curso, forma la frontera natural entre Colombia y Venezuela antes de entrar en territorio del Brasil.  De las aves catalogadas, 74 fueron colectadas por Manuel Castro, expedicionario de la Colección Ornitológica Phelps, en San Felipe (frente a San Carlos, Venezuela y Macacuní (frente a El Carmen. Venezuela en agosto y septiembre de 1947.  Los autores también hacen mención de las aves colectadas en enero de 1931 frente a San Carlos, Venezuela, es decir, en San Felipe, Colombia, por Ernest G. Holt, Emmet R. Blake y Charles T. Agostini. Entre las nueve especies conseguidas por estos

  2. Evoluzione del paesaggio e insediamento nel bacino del Rio Posada. Indagini geoarcheologiche

    DEFF Research Database (Denmark)

    French, Charles; Sulas, Federica; Melis, Rita T.

    2017-01-01

    New geoarchaeological investigations provide the first local, environmental records concerning the long-term history of the Rio Posada basin in eastern Sardinia. In this article, we present some preliminary findings of field research and laboratory analyses and propose an environmental sequence...

  3. Cratons and orogenic belts of the Brazilian Shield and their contained gold deposits

    Science.gov (United States)

    Hartmann, Leó A.; Delgado, Inácio

    2001-07-01

    The Brazilian Shield extends over much of South America to the east of the Andean Chain, and is partly covered by Phanerozoic sedimentary rocks. The three major tectonic units (older than 900 Ma) of the shield are the Amazon, São Francisco, and Rio de la Plata Cratons, whereas rocks of the Neoproterozoic (900-550 Ma) Brasiliano Cycle belts surround the cratons in the eastern half of Brazil. Paleoarchean rocks occur as small cratonic nuclei in northeastern Brazil, but the cratons contain voluminous 3.0-2.6-Ga granitic and greenstone belts and a large volume of Paleoproterozoic rocks. Late Mesoproterozoic belts (~1.2 Ga) occur in the western and northwestern Amazon Craton and possibly in northeastern Brazil. There are voluminous Paleoproterozoic and Mesoproterozoic intrusive and volcanic rocks in the Amazon Craton. Belts of reworked crust are common, but the Amazon Craton grew to the north and west mainly during accretionary orogens. The Neoproterozoic Brasiliano Cycle belts contain 5% of juvenile crust in central and southern Brazil, but are dominantly derived from reworking of older crust. It is possible that the cratons were continuous in a super-continent during the Mesoproterozoic prior to the Brasiliano Cycle. Gold deposits are concentrated in the Archean and Paleoproterozoic terranes, including the Carajás and Quadrilátero Ferrífero gold provinces of the Amazon and São Francisco Cratons, respectively, but some also occur in younger terranes. Recent alluvial gold deposits and supergene deposits in the weathering zone are widespread in Brazil.

  4. Evaluación hidrogeológica del acuífero del rio Tecoripa, Sonora, México

    Directory of Open Access Journals (Sweden)

    Eva Lourdes Vega Granillo.

    2014-12-01

    Full Text Available La presente evaluación hidrogeológica tiene el propósito de apoyar a los municipios de Tecoripa y Suaqui Grande para resolver la problemática que enfrentan respecto a la escasez de agua, reflejado, en el abatimiento de sus acuíferos y en los bajos escurrimientos superficiales. La evaluación incluyo información previa y genero nuevos datos sobre geología, geofísica, hidrología superficial e hidrogeología. Para conocer las condiciones del subsuelo, se aplicaron las técnicas de prospección geofísica de resistividad eléctrica y gravimetría. Se elaboró un modelo de 3 a 5 capas, siendo la cobertura aluvial del Rio Tecoripa la más importante, para el almacenamiento de agua subterránea desde el sitio La Cortina hasta Suaqui Grande, con espesores que varían de los 4.0 a los 20.0 m. El basamento está representado por el Grupo Baucarit, con espesores de decenas a cientos de metros, es improductivo desde el punto de vista geo hidrológico. Los cálculos hidrológicos muestran que la evapotranspiración representa el 87% de la lluvia, el escurrimiento el 12% y el resto ocurre como infiltración o recarga al acuífero. Se concluye que el volumen infiltrado no es suficiente para los usos que se realizan en el Acuífero del Rio Tecoripa, por lo que se recomienda se realicen obras hidráulicas de recarga artificial.

  5. Indicadores de desempeño del sistema de riego del Rio Dulce, Santiago del Estero, Argentina

    NARCIS (Netherlands)

    Prieto, D.; Angella, G.; Angueira, M.C.; Pérez Carrera, A.; Moscuzza, C.

    2005-01-01

    Mucha atención se ha puesto en el estudio del desempeño de los sistemas de riego a partir de la década de 1990, al tomarse conciencia de los bajos resultados de muchos de ellos, y su impacto ambiental negativo. El Sistema de Riego del Río Dulce en Santiago del Estero (PRD), no es la excepción,

  6. CAMBIO DE COBERTURA Y USO DEL SUELO EN LA CUENCA DEL RIO MOLOLOA, NAYARIT

    Directory of Open Access Journals (Sweden)

    Nájera González O

    2010-07-01

    Full Text Available Los cambios de cobertura y uso del suelo se han reconocido en muchos países como una de las principales causas de deterioro ambiental, por ello están ubicados en el centro de la investigación ambiental y representan un punto importante en diferentes ámbitos como medio para entender los mecanismos de este proceso de deterioro y guía para la toma razo- nable de decisiones sobre el uso del territorio. En el estado de Nayarit, la cuenca del río Mo- loloa ha proveído de un conjunto de bienes y servicios a las localidades que involucra; des- afortunadamente, esta relación ha repercutido en un deterioro acelerado de sus recursos na- turales. En este trabajo se analizan los cambios de cobertura y uso del suelo en la cuenca del río Mololoa, entre 1995 y 2005, a partir de la interpretación de ortofotos digitales y manejo de la información en un SIG. Los resultados muestran que el paisaje de la cuenca está dominado en 83.01% por la vegetación natural y tierras de cultivo. La dinámica de cambio está centrada en los tipos de cobertura “vegetación natural” y “construcciones”, la primera disminuye a una tasa de 41.67 ha/año, y la segunda, aumenta 74.86 ha/año. La tasa de deforestación de los bosques y selvas de la región fue de 0.1 y 0.36%, menor a las reportadas por diferentes autores a nivel nacional y estatal.

  7. Density heterogeneity of the cratonic lithosphere

    DEFF Research Database (Denmark)

    Cherepanova, Yulia; Artemieva, Irina

    2015-01-01

    correlation between mantle density variations and the tectonic setting. Three types of cratonic mantle are recognized from mantle density anomalies. 'Pristine' cratonic regions not sampled by kimberlites have the strongest depletion with density deficit of 1.8-3.0% (and SPT density of 3.29-3.33 t/m3...

  8. Deep vs. shallow expressions of continental cratons: Can cratonic roots be destroyed by subduction?

    Science.gov (United States)

    Perry-Houts, J.; Calo, M.; Eddy, C. L.; Guerri, M.; Holt, A.; Hopper, E.; Tesoniero, A.; Romanowicz, B. A.; Becker, T. W.; Wagner, L. S.

    2013-12-01

    Cratons are parts of continents that have remained tectonically quiescent over billion-year timescales. Although cratonic lithosphere has the stabilizing properties of chemical buoyancy and high viscosity, it can still be destroyed. The best known example of a missing cratonic root is beneath the eastern North China Craton (NCC). Despite strong evidence for the past existence of a craton in northern China, high heat flow, Mesozoic basin formation, extensive seismicity, and the lack of a fast seismic root imply that the deep cratonic lithosphere is missing. The mechanism for the lithospheric root loss is a source of much debate. Many mechanisms have been proposed, among them: shearing of the lithospheric root by asthenospheric flow induced by the Indo-Eurasian collision; ponding of the Pacific slab in the transition zone acting as a source of fluids that enable hydrous weakening; and thermal erosion due to the corner-flow upwelling of hot, deep material. It is generally agreed that the influence of subduction is key, both from the temporal coincidence of subduction with increased tectonomagmatic activity on the craton and from the spatial correlation of lithospheric loss adjacent to the Pacific trench. We investigate how cratons extend to depth through comparison between seismic signatures of the cratonic lithosphere in the upper mantle and surficial evidence of cratonic boundaries. We examine global and regional tomography, as well as receiver-function constraints on lithospheric thickness in the NCC. We define craton boundaries at the surface through analyses on crust and lithospheric mantle ages and kimberlite locations. We aim to identify regions where the fast cratonic root has been lost or altered beneath Archean and Proterozoic crust and in particular place constraints on the extent of the remaining cratonic root beneath North China. Given the common emphasis on the role of subduction as a driving force for the root loss beneath the eastern NCC, we focus on

  9. Upper Cretaceous molluscan record along a transect from Virden, New Mexico, to Del Rio, Texas

    Science.gov (United States)

    Cobban, W.A.; Hook, S.C.; McKinney, K.C.

    2008-01-01

    Updated age assignments and new collections of molluscan fossils from lower Cenomanian through upper Campanian strata in Texas permit a much refined biostratigraphic correlation with the rocks of New Mexico and the Western Interior. Generic names of many Late Cretaceous ammonites and inoceramid bivalves from Texas are updated to permit this correlation. Strata correlated in the west-to-east transect include the lower Cenomanian Beartooth Quartzite and Sarten Sandstone of southwest New Mexico, and the Eagle Mountains Formation, Del Rio Clay, Buda Limestone, and. basal beds of the Chispa Summit, Ojinaga, and Boquillas Formations of the Texas-Mexico border area. Middle Cenomanian strata are lacking in southwestern New Mexico but are present in the lower parts of the Chispa Summit and Boquillas Formations in southwest Texas. Upper Cenomanian and lower Turonian rocks are present at many localities in New Mexico and Texas in the Mancos Shale and Chispa Summit, Ojinaga, and Boquillas Formations. Middle Turonian and younger rocks seem to be entirely nonmarine in southwestern New Mexico, but they are marine in the Rio Grande area in the Chispa. Summit, Ojinaga, and Boquillas Formations. The upper part of the Chispa Summit and Boquillas contain late Turonian fossils. Rocks of Coniacian and Santonian age are present high in the Chispa Summit, Ojinaga, and Boquillas Formations, and in the lower part of the Austin. The San Carlos, Aguja, Pen, and Austin Formations contain fossils of Campanian age. Fossils representing at least 38 Upper Cretaceous ammonite zones are present along the transect. Collections made in recent years in southwestern New Mexico and at Sierra de Cristo Rey just west of downtown El Paso, Texas, have been well treated and do not need revision. Taxonomic names and zonations published in the pre-1970 literature on the Rio Grande area of Texas have been updated. New fossil collections from the Big Bend National Park, Texas, allow for a much refined correlation

  10. O sujeito psicótico e a função do delírio

    OpenAIRE

    Briggs, Raquel; Rinaldi, Doris

    2014-01-01

    Este trabalho aborda o conceito de delírio e sua função na estrutura psicótica. A psicanálise considera o delírio, por um lado, fenômeno elementar e, por outro, tentativa de cura, portador de uma verdade. O presente trabalho objetiva abordar a estruturação delirante, assim como a função da mesma para o sujeito paranoico, no sentido de situar a direção de tratamento na clínica da paranoia. A partir de um caso clínico e embasando-se nos conceitos da psicanálise, discute-se a função do mesmo par...

  11. Arancia-Corn Products S. A. de C. V. : cogeneration plant in San Juan del Rio

    Energy Technology Data Exchange (ETDEWEB)

    Trellez, L.A. (Secretaria de Energia, Mexico City (Mexico))

    1999-01-01

    A description of a cogeneration plant in San Juan del Rio, Mexico was presented. The Arancia-Corn Products, S.A. de C.V. corn processing plant makes use of an aero-derivative gas turbogenerator and a heat recovery boiler. The total installed capacity at the plant is 17.5 MW. The project was first considered when the plant production capacity nearly tripled, thereby increasing the need for electrical energy. The cogeneration project, which went into production in December 1996 makes use of the considerable amounts of steam from the plants operation. There is also the possibility of wheeling electric energy to other plants owned by the same company. The authorities involved in the project are the Mexican Ministry of Energy, Comision Reguladora de Energia, Petroleos Mexicanos (which supplied the natural gas), Comision Federal de Electricidad, and other federal, state and local authorities. A review of the permits and contracts that made up the agreement was also included. 2 figs.

  12. O sujeito psicótico e a função do delírio

    Directory of Open Access Journals (Sweden)

    Raquel Briggs

    2014-09-01

    Full Text Available Este trabalho aborda o conceito de delírio e sua função na estrutura psicótica. A psicanálise considera o delírio, por um lado, fenômeno elementar e, por outro, tentativa de cura, portador de uma verdade. O presente trabalho objetiva abordar a estruturação delirante, assim como a função da mesma para o sujeito paranoico, no sentido de situar a direção de tratamento na clínica da paranoia. A partir de um caso clínico e embasando-se nos conceitos da psicanálise, discute-se a função do mesmo para o sujeito. Leva-se em conta a invenção do sujeito para além do delírio, a partir de uma estabilização que, entretanto, não acontece sem ele.

  13. Water in the Cratonic Mantle Lithosphere

    Science.gov (United States)

    Peslier, A. H.

    2016-01-01

    The fact that Archean and Proterozoic cratons are underlain by the thickest (>200 km) lithosphere on Earth has always puzzled scientists because the dynamic convection of the surrounding asthenosphere would be expected to delaminate and erode these mantle lithospheric "keels" over time. Although density and temperature of the cratonic lithosphere certainly play a role in its strength and longevity, the role of water has only been recently addressed with data on actual mantle samples. Water in mantle lithologies (primarily peridotites and pyroxenites) is mainly stored in nominally anhydrous minerals (olivine, pyroxene, garnet) where it is incorporated as hydrogen bonded to structural oxygen in lattice defects. The property of hydrolytic weakening of olivine [4] has generated the hypothesis that olivine, the main mineral of the upper mantle, may be dehydrated in cratonic mantle lithospheres, contributing to its strength. This presentation will review the distribution of water concentrations in four cratonic lithospheres. The distribution of water contents in olivine from peridotite xenoliths found in kimberlites is different in each craton (Figure 1). The range of water contents of olivine, pyroxene and garnet at each xenolith location appears linked to local metasomatic events, some of which occurred later then the Archean and Proterozoic when these peridotites initially formed via melting. Although the low olivine water contents ( 6 GPa at the base of the Kaapvaal cratonic lithosphere may contribute to its strength, and prevent its delamination, the wide range of those from Siberian xenoliths is not compatible with providing a high enough viscosity contrast with the asthenophere. The water content in olivine inclusions from Siberian diamonds, on the other hand, have systematically low water contents (water contents. The olivine inclusions, however, may have been protected from metasomatism by their host diamond and record the overall low olivine water content of

  14. Estudio geoeléctrico en el valle alto del Rio Patía

    Directory of Open Access Journals (Sweden)

    Pérez Cerón Rosalbina

    1995-10-01

    Full Text Available

    The resistivity survey carried out at the upper valley of the Patía River, provided good information to define the sedimentary sequence of the area. A general sequence from top to base is described as follows: recent deposits with resistivity values between 20 and 400 Ohrn-m, fine to medium grain, sandstones with resistivity values between 20 and 70 Ohrn-m, fine grain sandstones and silstones with resistivity values between 8 and 20 Ohrn-rn, and clayli basement, with resistivity less than 20 Ohm-m. There are two kinds of aquifers; free, related to sands and gravels from alluvial fans and terraces (resistivity values between 70 and 400 Ohrn-m and thickness between 25 and 75, semi-confined related to tertiary sandstones (resistivities values between 20 and 30 Ohm-m, thickness between 35 and 150 m. The water quality of the upper aquifers is good enough with small amounts of salt content. Saline water is found at the lower aquifer.

    The resistivity method was useful to locate geological discontinuities; some of them found with surface expression associated with lineaments and faults. Some of these geological features have been mapped in previous geological works on the area. In general the interpretation based on the resistivity results shows a block tectonics environment affecting cretaceous and tertiary rocks and probably the quaternary deposit.

    La prospección eléctrica en el valle alto del Rio Patía, permitió definir una secuencia típica constituida de techo a base por

  15. Seismic and Gravity Investigations of the Caja del Rio Geothermal Area, New Mexico

    Science.gov (United States)

    Braile, L. W.; Burke, B.; Butler, E.; Harper, C.; Livermore, J.; McGlannan, A.; Wasik, A.; Baldridge, W. S.; Biehler, S.; Ferguson, J. F.; McPhee, D. K.; Snelson, C. M.; Sussman, A. J.

    2012-12-01

    The SAGE (Summer of Applied Geophysical Experience) program collected new seismic and gravity data in 2012 in the Caja del Rio area of northern New Mexico. The area, about 25 km NW of Santa Fe, has been identified as a potential geothermal resources area based on relatively high temperature gradients in drill holes. The SAGE 2012 data collection was part of an integrated geophysical study of the area initiated in 2011. Seismic data consisted of a 6.4 km SE to NW profile (80 three-component stations, 20 m station spacing, using a Vibroseis source - 20 m spacing for reflection VPs; 800 m spacing for refraction VPs) with both refraction and CMP reflection coverage. The surface conditions (dry unconsolidated cover over a thin volcanic layer) increased surface wave energy and limited the signal-to-noise level of the refraction and reflection arrivals. The refraction data were modeled with first arrival travel time methods. The reflection data were processed to produce a CMP stacked record section. Strong, NW-dipping reflectors, interpreted as from the Espinaso formation, are visible at about 1.4 seconds two-way time. One hundred and sixty-four new gravity measurements (detailed data at 500 m spacing along the seismic profile and regional stations) were collected and combined with existing regional data for modeling. Interpretation of the seismic and gravity data was aided by refraction velocities, the existence of a nearby regional seismic reflection profile from industry, and lithologies and well-logs from a deep well. The sedimentary basin interpreted from the seismic and gravity data, along with existing geological and geophysical information, consists of a thick section of Tertiary rift fill (capped by a thin layer of volcanic rocks), over Mesozoic and Paleozoic rocks, with a total basin thickness of about 3 km.

  16. Jóvenes y participación política desde la perspectiva del Participatório

    Directory of Open Access Journals (Sweden)

    C Quadros

    2015-12-01

    Full Text Available El "Observatorio Participatório (Participativo de la Juventud" es una red social lanzada en julio de 2013 por el gobierno brasileño para fomentar la colaboración de los jóvenes en los debates destinados a las políticas de juventud. Este entorno interactivo trabaja en la integración con las redes sociales digitales con el objetivo de conocer a los jóvenes y sus preocupaciones. La intención es que los debates puedan servir como apoyo a las políticas públicas, leyes y otros temas importantes para los jóvenes brasileños. El documento de presentación del "Observatorio Participatório de la Juventud" pone de relieve que los jóvenes siempre han estado pidiendo un espacio confiable para hablar con los investigadores, gestores y otros jóvenes sobre temas de su interés. En este artículo se describe el proceso de creación del Participatório y analizamos los intereses de los jóvenes que lo utilizan a través de los grupos creados.

  17. Contribuições da psiquiatria clássica ao diagnóstico da melancolia: o delírio de negação e o delírio de indignidade

    Directory of Open Access Journals (Sweden)

    Maria de Fátima Ferreira

    2008-09-01

    Full Text Available Discute-se a respeito da importância que teve a pesquisa empreendida pelos psiquiatras franceses Jules Cotard e Jules Séglas nas primeiras elaborações freudianas acerca da melancolia. No esforço feito por Freud em distinguir as afecções psíquicas, ele leva em consideração os principais conceitos destacados pela psiquiatria clássica: a dor moral, condição para o delírio de indignidade, o mecanismo de auto-acusação e a hemorragia de libido. Busca-se uma articulação entre esses autores. Neste artigo essa retomada é importante para um aprimoramento no diagnóstico da melancolia. Constata-se que a melancolia na contemporaneidade nos remete não somente aos clássicos, mas sobretudo a Freud, em seus primeiros rascunhos.

  18. Asteroidea de la plataforma continental de Rio Grande do Sul (Brasil, coleccionados durante los viajes del N/Oc. "prof. W. Besnard" para el proyecto Rio Grande do Sul Asteroidea of the continental shelf of Rio Grande do Sul (Brazil, collected during the cruises of the R/V "prof. W. Besnard" for the project Rio Grande do Sul

    Directory of Open Access Journals (Sweden)

    Carlos J Carrera-Rodríguez

    1977-01-01

    Full Text Available 1 - La hidrología del área estudiada, entre las latitudes 29º y 34ºS, es muy compleja y esta influenciada por aguas tropicales traídas por la Corriente de Brasil, por aguas subantarticas traídas por la Corriente de las Malvinas, por las aguas del estuario del Rio de La Plata y por la presencia cercana de la Convergencia Subtropical. 2 - Las aguas que cubren la plataforma continental del Estado de Rio Grande do Sul pueden clasificarse como Aguas Costeras de Influencia Tropical (ACIT, Aguas del Talud Continental (AT y Aguas Costeras de Influencia Subantártica (ACISA originadas casi exclusivamente por procesos de mezcla. 3 - En otoño e invierno es mayor la influencia de las ACISA, AT y las aguas del estuario del Rio de La Plata sobretodo en la región septentrional del área estudiada; ocurren inversiones de temperatura y predominan los procesos de mezcla sobre los de interacción océano-aire. 4 - En primavera y verano es mayor la influencia de las ACIT; predominan los procesos de interacción océano-aire sobre los de mezcla y se encuentra evidencia sugiriendo la ocurrencia de resurgencias en varios puntos. 5 - Los procesos hidrográficos del área estudiada varían estacionalmente y ademas anualmente según las condiciones meteorológicas reinantes. 6 - La fauna de Asteroidea de Rio Grande do Sul comprende cinco ordenes, nueve familias, 15 géneros y 24 especies. 7 - El área estudiada tiene una fauna de asteroideos principalmente tropical y subtropical pero incluye elementos subantárticos y antárticos. Los primeros se encuentran sobretodo al norte del paralelo de 31ºS mientras que los segundos ocurren principalmente al sur de ese paralelo. Constituye esto evidencia adicional a la hipótesis de que el área estudiada comprende dos regiones hidrográficas con su división aproximada en el paralelo 31ºS. 8 - Se reportan ocho nuevas ocurrencias: Labidiaster radiosus Lutken, Luidla clathrata (Say, Marginaster pectinatus Perrier

  19. Efecto de la adicion de cal a plantaciones de jaul en andisoles de la cuenca alta del rio Virilla, Costa Rica

    National Research Council Canada - National Science Library

    Salazar, Marlon; Cabalceta, Gilberto; Alvarado, Alfredo; Segura, Manuel; Castillo, Alvaro

    2011-01-01

    Con el proposito de evaluar el impacto de adicionar cal a plantaciones de jaul (Alnus acuminata (H.B.K.) O. Kuntze) en Andisoles de la cuenca alta del rio Virilla, Costa Rica, se realizo el presente trabajo en 2 localidades...

  20. Ensino de enfermagem no Rio Grande do Sul apartir de 1950 Enseñanza de enfermería en Rio Grande do Sul a partir del 1950 Teaching of nursing in Rio Grande do Sul in the 1950

    Directory of Open Access Journals (Sweden)

    Valéria Lamb Corbellini

    2010-08-01

    Full Text Available Essa pesquisa teve como objetivo analisar como o ensino de graduação na enfermagem, no Rio Grande do Sul construiu o seu saber, desde o primeiro curso, a partir da década de 1950. O estudo envolveu enfermeiras docentes que vivenciaram esse período da história e, para análise documental, foi utilizada a análise de discurso. Os dados indicam, dentre eles, o currículo mais integrado que busca articular teoria/prática sem fragmentação do saber e a relação ensino-aprendizagem, na qual professor e aluno são sujeitos desse processo.Esta investigación tuvo como objetivo analizar como la enseñanza de la pregrado de Enfermería en Río Grande do Sul construyó su saber, desde el primer curso, a partir de la década de 1950. El estudio integró enfermeras docentes que vivenciaron ese periodo de la historia y, para el análisis documental, fue utilizado el análisis del discurso.Los datos indican, entre ellos, el curriculum más integrado que busca articular teoría y práctica sin fragmentación del saber y la relación enseñanza aprendizaje, en la cuál el profesor y el alumno son sujetos de ese processo.The purpose of this research was to analyze how the undergraduate teaching of nursing in Rio Grande do Sul has constructed its knowledge, since the first course, as of the decade of 1950s. The survey has involved teaching nurses who have lived such period of our history, and the discourse analysis has been utilized for the documental analysis. The information data indicate, among them, the most integrated curriculum that seeks articulating theory/practice without fragmenting the knowledge and the teaching-learning relationship, wherein professors and students are subjects of such procedure.

  1. Application of multi-dimensional discrimination diagrams and probability calculations to Paleoproterozoic acid rocks from Brazilian cratons and provinces to infer tectonic settings

    Science.gov (United States)

    Verma, Sanjeet K.; Oliveira, Elson P.

    2013-08-01

    studies on Cassiterita-Tabuões, Ritápolis, São Tiago-Rezende Costa (south of São Francisco craton, Minas Gerais) showed a collision setting, which agrees fairly reasonably with a syn-collision tectonic setting indicated in the literature. A within-plate setting is suggested for the Serrinha magmatic suite, Mineiro belt (south of São Francisco craton, Minas Gerais), contrasting markedly with the arc setting suggested in the literature. The ninth case study on Rio Itapicuru granites and Rio Capim dacites (north of São Francisco craton, Serrinha block, Bahia) showed a continental arc setting. The tenth case study indicated within-plate setting for Rio dos Remédios volcanic rocks (São Francisco craton, Bahia), which is compatible with these rocks being the initial, rift-related igneous activity associated with the Chapada Diamantina cratonic cover. The eleventh, twelfth and thirteenth case studies on Bom Jesus-Areal granites, Rio Diamante-Rosilha dacite-rhyolite and Timbozal-Cantão granites (São Luís craton) showed continental arc, within-plate and collision settings, respectively. Finally, the last two case studies, fourteenth and fifteenth showed a collision setting for Caicó Complex and continental arc setting for Algodões (Borborema province).

  2. Hydrologic-agronomic-economic model for the optimal operation of the Yaqui river reservoir system using genetic algorithms; Modelo hidrologico-agronomico-economico para la operacion optima del sistema de presas del rio Yaqui, usando algoritmos geneticos

    Energy Technology Data Exchange (ETDEWEB)

    Minjares-Lugo, Jose Luis; Salmon-Castelo, Roberto Fernando; Oroz-Ramos, Lucas Antonio [Comision Nacional del Agua (Mexico); Cruz-Medina, Isidro Roberto [Instituto Tecnologico de Sonora (Mexico)

    2008-07-15

    The objective of this study is to develop an integrated hydrologic-agronomic-economic annual model for the optimal operation of the Yaqui River reservoir system to support irrigation and urban water supply in the watershed. The model solves for each year's water allocations by crop, maximizing annual agricultural income for a specified risk of reservoir shortages and spills. It accounts for adjustments in water supply arising from changes in precipitation and runoff uncertainty and from changes in water demand arising from variations in crop prices and production costs. Model predictions for the agricultural year 2000-2001 are compared with observed results to test the model's predictive ability. Results demonstrate that the model can be used to optimize and analyze reservoir system operation and for water resources management in the Irrigation District No. 041, providing a framework for improving the operation of a reservoir system, selecting an optimal cropping pattern according to its maximum economic benefits, and in the optimal monthly water releases from the reservoir system. The model considers the simultaneous operation of three dams and it is applied to the Irrigation District No. 041, Rio Yaqui. [Spanish] El objetivo de este estudio es desarrollar un modelo integral de optimizacion anual para definir la operacion del sistema de presas del rio Yaqui y la asignacion del volumen mensual de agua para la irrigacion de diferentes cultivos, asi como para satisfacer los requerimientos de uso urbano basado en las condiciones hidrologicas, agronomicas y economicas en la cuenca. El modelo maximiza los beneficios anuales netos del sector agricola, minimizando el riesgo de deficit o derrames en el sistema de presas; incluye cambios en el suministro de agua debido a la incertidumbre de las precipitaciones y del escurrimiento del rio y cambios en la demanda de agua provocados por la incertidumbre de los precios y costos de los cultivos. Se utilizaron datos del

  3. Seismic Structure of Southern African Cratons

    DEFF Research Database (Denmark)

    Soliman, Mohammad Youssof Ahmad; Artemieva, Irina; Levander, Alan

    2014-01-01

    Cratons are extremely stable continental crustal areas above thick depleted lithosphere. These regions have remained largely unchanged for more than 2.5 Ga. This study presents a new seismic model of the seismic structure of the crust and lithospheric mantle constrained by seismic receiver...... functions and finite-frequency tomography based on data from the South Africa Seismic Experiment (SASE). Combining the two methods provides high vertical and lateral resolution. The main results obtained are (1) the presence of a highly heterogeneous crustal structure, in terms of thickness, composition (as...... shown by estimated Vp/Vs), and sharpness of the discontinuities, (2) observation of an unexpectedly strong crustal azimuthal anisotropy, and (3) a fast lithospheric keel of the Kaapvaal Craton which reaches depths of 300-350 km and relatively slow anomalies beneath both the paleo-orogenic Limpopo Belt...

  4. Seismic imaging of Southern African cratons

    DEFF Research Database (Denmark)

    Soliman, Mohammad Youssof Ahmad

    Cratonic regions are the oldest stable parts of continents that hold most of Earth’s mineral resources. There are several open questions regarding their formation and evolution. In this PhD study, passive source seismic methods have been used to investigate the crustal and lithosphere structures...... of the southern African regions. Some of the main research problems that have been dealt with during this research are about (1) the heterogeneity scale of crustal structure and composition, (2) the depth extent of the cratonic keels and their layering, and (3) the strength of crustal anisotropy. The core...... of this research was based on Ps- and Sp- receiver functions analysis to determine crustal thickness while finite-frequency traveltime tomography is utilized to model 3D heterogeneity in the upper mantle. Combining the two methods provides high vertical and lateral resolution....

  5. Evaluación de la contaminación de mercurio en La Cuenca del rio Ocoña, Perú

    OpenAIRE

    Palacios, Silvia; Alfonso Abella, María Pura; Yañez, Juan; Higueras, Pablo

    2013-01-01

    En el departamento de Arequipa, sur del Perú, se localiza la cuenca del rio Ocoña, donde se encuentran diferentes asentamientos mineros artesanales . En esta zona se explota el oro. L a recuperación del metal precioso se realiza mediante amalgamación con mercurio , en algunos casos utilizando retortas y en otros en las propias cases . La utilización de éste se realiza sin medidas de protección lo que produce una contaminación al medio ambiente de toda la zona. Mediante este trabajo se rea...

  6. Diversidad, abundancia estacional y uso de hábitat de aves playeras migratorias en el estuario del Rio Gallegos (Santa Cruz)

    OpenAIRE

    Florencia Anahí Becerra; Silvia Noemi Ferrari

    2014-01-01

    Diversidad, abundancia estacional y uso de hábitat de aves playeras migratorias en el estuario del rio Gallegos (Santa Cruz). Se presenta información sobre la condición actual de las aves playeras migratorias en un sector del estuario, adyacente a la ciudad de Río Gallegos, que está sujeto a diversos cambios provenientes del uso urbano. Desde marzo de 2011 a enero de 2012, se realizaron 52 visitas a 5 estaciones de muestreo, recorriéndose transectas perpendiculares a la costa. La diversidad e...

  7. Flora and vegetation of Rio Torto area in Brasimone ENEA Centre, Bologna; Flora e vegetazione dell'area Rio Torto nel centro ENEA del Brasimone, Bologna

    Energy Technology Data Exchange (ETDEWEB)

    De Mei, M.; Varriale, A. [ENEA, Centro Ricerche Casaccia, Rome (Italy). Dipt. Ambiente

    1999-07-01

    of degradation of this vegetation: it's due, above all, to the intense sylviculture practised in the area and to the severe climatic conditions. Although the human intervention on the wood coming down, effects are still visible and represented by a not easy to classify vegetational disorder. Beechwood has been cutting periodically for a long time, causing a complex structural situation; in fact, seedlings and tillers have different diameters but similar height. Both analysis of flora and vegetational and phytosociological study represent respectively a qualitative and qualitative-quantitative approach for vegetational valuation. [Italian] L'are Rio Torto, situata sul versante settentrionale dell'Appennino tosco-emiliano nella proprieta' del C.R. Enea Brasimone, e' stata oggetto di uno studio floristico e vegetazionale al fine di delineare le condizioni della copertura vegetale e di valutare le variazioni delle caratteristiche del popolamento vegetazionale. Per lo studio della vegetazione e' stato adottato il metodo di Brau-Blanquet, basato sull'accurata analisi della flora e sul campionamento statistico. L'elaborazione dei rilievi e' stata realizzata con il software SYN-TAX. Il faggio e' la specie dominante dell'area; al margine inferiore della faggeta sono ben rappresentati gli elementi dell'associazione Arrhenatheretalia mentre al margine superiore si estende una ampia radura caratterizzata da Pteridium aquilinum, da Prunus spinosa e da Crataegus monogyna. Il sottobosco erbaceo si presenta discretamente ricco dal punto di vista fisionomico-strutturale e dominato da elementi euroasiatici e boreali. Lo spettro biologico che ne deriva indica un valore alto per le emicriptofite e questo e' da considerare un indice di stress. I risultati ottenuti dall'indagine vegetazionale e fitosociologica hanno permesso di inquadrare i popolamenti di faggio nell'Ordine Fagetalia e nell

  8. La sostenibilidad del desarrollo entre Rio-92 y Johannesburgo 2002: eramos felices y no sabiamos Development's sustainability between Rio-92 and Johannesburg-2002: we did not realize how happy we were

    Directory of Open Access Journals (Sweden)

    Roberto P. Guimarães

    2001-12-01

    Full Text Available Transcurridas tres décadas desde la Conferencia sobre el Medio Ambiente Humano en Estocolmo, y estando a las puertas de la próxima Cumbre Mundial sobre Desarrollo Sostenible en Johannesburgo, corresponde hacer una evaluación del camino recorrido, en especial a partir del verdadero divisor de aguas que representó la Conferencia de Rio en 1992. Para tales propósitos se introduce, en primer lugar, un balance de la evolución económica, social e institucional de la década pasada para, en seguida, poner de relieve los avances y retrocesos de la agenda global del desarrollo sostenible, del propio proceso regional preparatorio para Johannesburgo 2002 y de las amenazas que puede representar la nueva agenda de seguridad estratégica a partir de los acontecimientos del 11 de septiembre.After three decades since the Stockholm Conference on the Human Environment, and at the doorsteps of the upcoming World Summit on Sustainable Development in Johannesburg, its seems appropriate to assess the path followed particularly since the Rio conference of 1992. For this purpose, it is analyzed the economic, social and institutional evolution of the region during the past decade, followed by an assessment of the advances and shortcomings of the global agenda of sustainable development, of the regional preparatory process for Johannesburg 2002, as well as of the threats posed by the new agenda of strategic security after the events of 11 September.

  9. Eficiencia de riego en el área de riego del Rio Dulce

    NARCIS (Netherlands)

    Angella, G.; Prieto, D.

    2004-01-01

    The Río Dulce Irrigation System is located in the province of Santiago del Estero, Argentina. The system water use efficiency was calculated as 36%. This figure can be ascribed to: 1- inadequate on-farm irrigation management; 2- poor maintenance of canal network. Application of very high depths

  10. Diversidad de ácaros del orden prostigmata asociados al suelo de la Reserva Natural de Yotoco y del enclave seco del rio Dagua

    OpenAIRE

    Álvarez Ríos, Leonardo

    2012-01-01

    Las reservas naturales son lugares que albergan gran diversidad de flora y fauna, las cuales son protegidas por el hombre con fines de conservación. La Reserva Natural de Yotoco se encuentra ubicada en la vía que conduce de Buga a Loboguerrero entre los kilómetros 17 y 18 dentro del Departamento del Valle del Cauca y se caracteriza por ser un bosque húmedo premontano. Por su parte el enclave Seco del Río Dagua se encuentra ubicado al occidente de Colombia, sobre la vertiente oriental de la co...

  11. Lateral heterogeneity and vertical stratification of cratonic lithospheric keels: a case study of the Siberian craton

    DEFF Research Database (Denmark)

    Artemieva, Irina; Cherepanova, Yulia; Herceg, Matija

    2014-01-01

    We present geophysical models for the lithospheric mantle of the Siberian craton, with focus on its structureand thermo-compositional heterogeneity as constrained by various geophysical data. The latter include thermalstructure of the lithosphere based on surface heat flow data and supported...... constrained independently by free-board and satellite gravityshows significant lateral variations, that are well correlated with crustal structure, surface tectonics, and regionalxenolith data. Proterozoic sutures and intracratonic basins are manifested by an increase in mantle density as comparedto light...... and lateralheterogeneity of the cratonic lithospheric mantle, with a pronounced stratification in many Precambrian terranes.We discuss lateral and vertical heterogeneity of the cratonic lithosphere discussed in connection to regionaltectono-thermal evolution....

  12. ESTUDIOS ECOLOGICOS EN LOS MEDANOS DEL SUR DE ENTRE RIOS. I

    Directory of Open Access Journals (Sweden)

    Raúl Martínez Crovetto

    2010-11-01

    Full Text Available

    El presente trabajo es un estudio de la dinámica de la vegetación en 108 médanos del sur de Entre Ríos. Primeramente se hace un análisis del medio, describiéndose el paisaje, el origen geológico, los suelos y el clima; luego se establece la sucesión vegetal, describ¡éndose, mediante inventarios fitosociológicos según la escuela Zürich-Montpellier, cada una de las asociaciones que intervienen en la psammosere y en la psammohidrosere

  13. Manifestaciones de violencia intrafamiliar hacia adultos mayores diabéticos. Pinar del Rio, 2012

    Directory of Open Access Journals (Sweden)

    María de la Caridad Casanova Moreno

    Full Text Available Introducción: la violencia contra el adulto mayor es un problema que requiere de sensibilización por parte del equipo de salud para ser visualizado. Objetivo: caracterizar las manifestaciones de violencia intrafamiliar hacia el adulto mayor diabético en un consultorio de la provincia de Pinar del Río. Métodos: se realizó un estudio descriptivo transversal durante el primer semestre del año 2012, en el Consultorio número 10 del Policlínico Universitario "Hermanos Cruz". El universo (U=86 estuvo constituido por el total de adultos mayores diabéticos; la muestra quedó conformada por 52 adultos mayores diabéticos. Las variables estudiadas fueron: edad, sexo, tipo de maltrato recibido, notificación, principal agresor e identificar la necesidad de información sobre el tema. Para la recolección de información se diseñó y aplicó un cuestionario por el equipo de investigación. Se utilizó el porcentaje como medida de resumen. Resultados: el grupo de edad más maltratado fue el de 60 a 69 años, predominando el sexo femenino. Los agresores más cercanos resultaron ser los hijos. La muestra estudiada manifestó que existe una insuficiente divulgación sobre el tema. Conclusiones: en el consultorio donde se realizó la investigación existen manifestaciones de violencia intrafamiliar en adultos mayores diabéticos, a pesar de que la comunidad no la reconoce como uno de sus problemas de salud.

  14. Estudio del impacto en la calidad del aire de las fuentes puntuales en la ciudad de pinar del Río A study of the impact of stationary sources on the air quality of pinar del Rio city

    Directory of Open Access Journals (Sweden)

    Mariam Fonseca Hernandez

    2013-03-01

    Full Text Available Se realizó un estudio del impacto de las fuentes fijas en la Ciudad de Pinar del Río utilizando el sistema de modelación MM5-CALMET-CALPUFF. Se simuló la dispersión de SO2, NOx, PM25, PM10 y CO emitidos por las 21 fuentes durante 15 días representativos del período lluvioso, además de la depositación húmeda de SO4(2- y NO3-. Se observó que las máximas concentraciones se producen en horarios de la mañana y noche. Se observó que producto de estas emisiones se ven afectados algunas zonas cercanas a la ciudad como Minas de Matahambre, San Juan y Martínez, Santa María, San Luis, El Corojo, Hermanos Saíz, Viñales, Pilotos, Consolación del Sur y las Ovas. Los valores de concentración medios diarios de NOx y SO2 sobrepasaron sus concentraciones máximas admisibles según la NC 39: 1999 y estuvieron por encima de los valores guías de la Organización Mundial de la Salud y los valores estándares EPA.A study of the impact of stationary sources on air quality on the city of Pinar del Rio, Cuba, using the modeling system MM5-CALMET-CALPUFF was made. The dispersion of SO2, NOx, CO, PM10 and PM25 emitted from 21 sources during 15 days is simulated by the model. This period is representative of the rainy season in Cuba (Summer. The of SO4(2- and NO3- wet deposition was also simulated. It was observed that the highest concentrations occur in the morning and evening. These emissions affected some neighboring cities as Santa Maria and Viñales. The daily average concentration values of NOx and SO2 exceeded their maximum permissible concentrations according to the Cuban standards, the guideline values of the World Health Organization and the EPA standards. The southwest area of the city is the most affected one with the highest concentration level.

  15. Diagnóstico y monitoreo de la calidad del agua del Rio Sucio en la zona del Valle San Andrés

    OpenAIRE

    Reyes de Cabrales, Cecilia Elizabeth; García, Alma Verónica

    2011-01-01

    En El Salvador, la calidad del agua es uno de los principales desafíos socioambientales. En las últimas décadas la contaminación de las principales fuentes de agua se ha profundizado, constituyendo un problema generalizado para la población y los ecosistemas. La contaminación de los recursos hídricos disminuye en gran medida la disponibilidad del agua, para las diferentes actividades de la población.

  16. Delírios I – Agonia e experiência (jogos de vida e morte

    Directory of Open Access Journals (Sweden)

    Vinícius Nicastro Honesko

    2010-07-01

    Full Text Available O presente ensaio pretende expor uma idéia de agonia como jogo de vida e morte no qual imerge o artista no ato de criação. A partir das leituras e conceituações do termo jogo em Johan Huizinga e em Roger Caillois, mostra como tais idéias são importantes para compreender a experiência humana diante do incompreensível que é a morte. Aponta como a agonia inspira no poeta, principalmente na modernidade, uma distância em relação às certezas do conhecimento, implicando uma leitura etimológica do termo experiência, isto é, como ex periri, (aqui, também, jogo de vida e morte. Por fim, procura ver como os traços desse jogo – uma eterna luta – sutilmente se mostram nos pânicos de Murilo Mendes e de Paul Gauguin, artistas nos quais a consciência dessa luta é atravessada pela imagem do lugar por excelência da agonia: o Calvário.

  17. Delírios II: lacerações de um corpo torturado

    Directory of Open Access Journals (Sweden)

    Vinícius Nicastro Honesko

    2012-05-01

    Full Text Available http://dx.doi.org/10.5007/2175-7917.2012v17n1p203 Percorrendo certos fragmentos do itinerário poético de León Felipe, o presente ensaio pretende analisar a figura, cunhada por Felipe, do poeta prometeico. A partir do estudo do termo grego oikonomia, apresenta, numa leitura etimológica, como tal termo se desdobra em várias imagens, as quais, embora conexas, tiveram diferentes usos e consequências tanto na configuração de uma comunidade política, quanto na formação do sujeito humano. Enfatiza também como o próprio termo oikonomia pode ser um operador fundamental para a compreensão da imagem – e, com isso, também da noção de espetáculo, tão pertinente para a configuração política contemporânea. Apresenta como diante do aprisionamento de toda palavra humana – de todo logos que possibilite uma ação política – a noção de parábola torna-se imprescindível como um modo de resistir à cooptação da palavra. Por fim, a partir da ideia do poeta prometeico – e de suas repercussões nos campos estético e ético –, constata como é possível construir uma linha de fuga para a disposição econômica da palavra e da vida humanas.

  18. Arancia-Corn Products S.A. de C.V. : cogeneration plant in San Juan del Rio

    Energy Technology Data Exchange (ETDEWEB)

    Trellez, L.A. [Secretaria de Energia, Mexico City (Mexico)

    1999-10-01

    A description of a cogeneration plant in San Juan del Rio, Mexico was presented. The Arancia-Corn Products, S.A. de C.V. corn processing plant makes use of an aero-derivative gas turbogenerator and a heat recovery boiler. The total installed capacity at the plant is 17.5 MW. The project was first considered when the plant production capacity nearly tripled, thereby increasing the need for electrical energy. The cogeneration project, which went into production in December 1996 makes use of the considerable amounts of steam from the plants operation. There is also the possibility of wheeling electric energy to other plants owned by the same company. The authorities involved in the project are the Mexican Ministry of Energy, Comision Reguladora de Energia, Petroleos Mexicanos (which supplied the natural gas), Comision Federal de Electricidad, and other federal, state and local authorities. A review of the permits and contracts that made up the agreement was also included. 2 figs.

  19. The Namuskluft and Dreigratberg sections in southern Namibia (Kalahari Craton, Gariep Belt): a geological history of Neoproterozoic rifting and recycling of cratonic crust during the dispersal of Rodinia until the amalgamation of Gondwana

    Science.gov (United States)

    Hofmann, Mandy; Linnemann, Ulf; Hoffmann, Karl-Heinz; Gerdes, Axel; Eckelmann, Katja; Gärtner, Andreas

    2014-07-01

    This paper presents combined U/Pb, Th/U and Hf isotope analyses on detrital and magmatic zircon grains together with whole-rock geochemical analyses of two basement and eight sedimentary rock samples from the Namuskluft and the Dreigratberg in southern Namibia (Gariep Belt). The sedimentary sections evolved during the Cryogenian on the SW part of the Kalahari Craton and where therefore deposited in an active rift setting during the break-up of Rodinia. Due to insufficient palaeomagnetic data, the position of the Kalahari Craton within Rodinia is still under discussion. There are possibilities to locate Kalahari along the western side of Australia/Mawsonland (Pisarevski et al. in Proterozoic East Gondwana: supercontinent assembly and break-up, Geological Society, London, 2003; Evans in Ancient Orogens and modern analogues. Geological Society, London, 2009; and others) or together with the Congo-Sao Francisco and Rio de la Plata Cratons (Li et al. in Prec Res 45: 203-2014, 2008; Frimmel et al. in Int J Earth Sci (Geol Rundsch) 100: 323-354, 2011; and others). It is sill unclear which craton rifted away from the Kalahari Craton during the Cryogenian. Although Middle to Upper Cryogenian magmatic activity is known for the SE Kalahari Craton (our working area) (Richtersveld Suite, Rosh Pinah Fm), all the presented samples show no U/Pb zircon ages younger than ca. 1.0 Ga and non-older than 2.06 Ga. The obtained U/Pb ages fit very well to the exposed basement of the Kalahari Craton (1.0-1.4 Ga Namaqua Province, 1.7-2.0 Ga Vioolsdrif Granite Suite and Orange River Group) and allow no correlation with a foreign craton such as the Rio de la Plata or Australia/Mawsonland. Lu-Hf isotopic signatures of detrital zircon point to the recycling of mainly Palaeoproterozoic and to a smaller amount of Archean crust in the source areas. ɛHf( t) signatures range between -24 and +14.8, which relate to TDM model ages between 1.05 and 3.1 Ga. Only few detrital zircon grains derived from

  20. Beneficiários do trabalho voluntário: uma leitura a partir da bioética Beneficiarios del trabajo voluntario: una lectura a partir de la bioética Beneficiaries of volunteering: a bioethical perspective

    Directory of Open Access Journals (Sweden)

    Lucilda Selli

    2008-12-01

    Full Text Available OBJETIVO: Descrever a percepção dos voluntários sobre os beneficiários do trabalho voluntário no setor de saúde hospitalar e a influência que o tema dos benefícios exerce sobre as motivações. MÉTODOS: Estudo exploratório com abordagem qualitativa. Participaram 110 voluntários em serviços de saúde referências no tratamento de câncer no Rio de Janeiro (RJ, com coleta de dados de outubro a dezembro de 2001. Os dados foram obtidos por dois instrumentos: um questionário com perfil socioeconômico e sobre motivações para atividade voluntária; e entrevista semi-estruturada para obtenção de dados complementares. RESULTADOS: A visão dos voluntários sobre os beneficiários da atividade voluntária esteve centrada mais freqüentemente no paciente (50,5%, no voluntário (41,9% e na instituição e sociedade (7,6%. Paciente e voluntário foram considerados simultaneamente beneficiários, sendo o voluntário o que mais recebe benefícios. Foi relatada também uma compreensão do benefício social dessa atividade. CONCLUSÕES: Constatou-se que existe, entre os voluntários, uma noção da importância social do seu trabalho voluntário, faltando uma articulação maior entre motivações individuais e trabalho voluntário como espaço de enfrentamento de problemas sociais.OBJETIVO: Describir la percepción de los voluntarios sobre los beneficiarios del trabajo voluntario en el sector de salud hospitalaria y la influencia que el tema de los beneficios ejerce sobre las motivaciones. MÉTODOS: Se efectuó estudio exploratorio con abordaje cualitativo. Participaron 110 voluntarios en servicios de salud de referencia en el tratamiento de cáncer en la ciudad de Rio de Janeiro (Sureste de Brasil, con colecta de datos de octubre a diciembre de 2001. Los datos fueron obtenidos por dos instrumentos: un cuestionario con perfil socioeconómico y sobre motivaciones para actividad voluntaria; y entrevista semi-estructurada para la obtención de

  1. Percepcion de los profesores universitarios acerca del concepto cultura cientifica y de sus implicaciones en el nuevo bachillerato del Recinto de Rio Piedras de la Universidad de Puerto Rico

    Science.gov (United States)

    Ramos Pastrana, Nilsa

    El Senado Academico del Recinto de Rio Piedras de la Universidad de Puerto Rico aprobo en el ano academico 2005-2006 la Certificacion 46, que contiene los lineamientos de un nuevo bachillerato. Este nuevo bachillerato introdujo cambios significativos en el curriculo tradicional. Entre ellos se encuentra la reduccion del componente de educacion general y el de Ciencias Biologicas en particular. La reduccion de creditos en el componente de Ciencias Biologicas ha obligado a reevaluar el concepto de cultura cientifica que desarrollan esos cursos. El proposito del estudio consistio en auscultar las percepciones de los profesores de las Facultades de Administracion de Empresas, Humanidades, Ciencias Sociales, Ciencias Naturales, Educacion y Estudios Generales del Recinto de Rio Piedras de la Universidad de Puerto Rico en torno al concepto de cultura cientifica, los contenidos disciplinares del curso de Ciencias Biologicas y la reduccion de creditos en el nuevo bachillerato. Las preguntas que guiaron la investigacion fueron: ¿cuales son las percepciones que tienen los profesores de las Facultades de Administracion de Empresas, Ciencias Sociales, Estudios Generales, Ciencias Naturales, Humanidades y Educacion, en torno al concepto de cultura cientifica y los contenidos disciplinares del curso de Ciencias Biologicas? ¿cuales son las percepciones que tienen los profesores de Ciencias Biologicas en torno al concepto cultura cientifica y los contenidos disciplinares del curso de Ciencias Biologicas? ¿existen diferencias significativas por facultad, genero, experiencia, rango y nombramiento en las percepciones que tienen los profesores del Recinto de Rio Piedras de la Universidad de Puerto Rico sobre los elementos que caracterizan la cultura cientifica y los contenidos biologicos que deben tener los egresados del Recinto? ¿que implicaciones curriculares tienen estos testimonios en el desarrollo del concepto de cultura cientifica en el nuevo bachillerato? Para realizar la

  2. Remoção do piercing no perioperatório Remoción del piercing en el perioperatorio Perioperative removal of body piercing

    Directory of Open Access Journals (Sweden)

    Solange Diccini

    2008-02-01

    Full Text Available A permanência do piercing no intra-operatório pode ocasionar intercorrências. Este estudo teve como objetivo determinar as intervenções de enfermagem no pré-operatório e avaliar as complicações do piercing no intra-operatório. Durante a revisão da literatura, foram incluídos 16 artigos publicados de 1994 a 2006. Nove artigos (56,2% de intervenções de enfermagem no pré-operatório, quatro (25,0% de complicações do piercing no intra-operatório e três (18,8% sobre o uso do piercing no intra-operatório, não apresentando complicações. Concluímos que a presença de piercing oral durante o intra-operatório aumenta o risco de lesões e aspiração. No corpo, a presença do piercing pode causar lesões na pele, decorrentes da mobilização do paciente e queimaduras eletrocirúrgicas. Portanto, é necessária a retirada do piercing no pré-operatório.La permanencia del piercing en el intraoperatorio puede causar algún perjuicio. Pretendemos, determinar las intervenciones de enfermería en el preoperatorio y evaluar las complicaciones del piercing en el intraoperatorio. La revisión de la literatura mostró 16 artículos publicados de 1994 a 2006. Nueve (56,2% fueron de intervenciones de enfermería en el preoperatorio, cuatro (25,0% de complicaciones del piercing en intraoperatorio, tres (18,8% no mostraron complicaciones. Concluimos, la presencia del piercing oral, durante el intraoperatório aumenta el riesgo de aspiración y daño. En el cuerpo, puede causar heridas en la piel, provocadas por la movilización del enfermo y las quemaduras, debido al uso de bisturí eléctrico durante el acto intraoperatorio. Por consiguiente, es necesario retirar el piercing en el preoperatorio.The remaining of piercing in intraoperative can cause damages. This paper had as purpose defining the nursing interventions in the intraoperative and evaluates the complications caused by piercing in the intraoperative. This literature review had 16

  3. The Building of the Archean Superior Craton: Thermal Perspective

    Science.gov (United States)

    Jaupart, C. P.; Mareschal, J. C.

    2014-12-01

    The building of a craton involves the extraction of continental crust from the Earth's mantle and the lateral accretion of juvenile volcanic terranes. Ascertaining which conditions allow a newborn continental assemblage to survive requires information on its mechanical strength, which depends on the amount and vertical distribution of radioactive elements in the crust. There is thus a connection between crust formation mechanisms and a successful amalgamation process. To address outstanding questions concerning Archean cratons, the Superior province in Canada is the perfect region because it contains a well preserved geological record of accretion that provides compelling evidence for plate tectonic processes at 2.7 Ga. At almost the same time, the rate of continental growth decreased significantly, which may result from either slower crust formation or enhanced destruction through erosion and subduction. These issues are linked to the strength of the newborn continent. The extensive heat flow data set now available in the Superior Province reveals a clear demarcation between a chemically depleted and differentiated craton core and weakly differentiated enriched juvenile accreted terranes. The Superior craton was thus made of a strong core surrounded by weak terranes. This dichotomy implies that the accretion process could not involve complex imbrication of the accreted belts into the craton core. Subsequently, the craton may have been protected from convective disruption or delamination by its weak margins. Differences between the craton core and accreted terranes may be due to different crustal extraction processes, such as melting in a mantle plume or magmatism in a subduction zone. If subduction started at about 3 Ga, as advocated by several authors, the assembly and survival of large cratons may well be a consequence of this key shift in mantle activity. Alternatively, the chemical depletion of the craton core may be due to a prolonged history of internal

  4. Influencia del porta-injertos y la época de cosecha sobre la calidad de pomelo (Citrus paradisis Macfad variedad Rio Red

    Directory of Open Access Journals (Sweden)

    Andrés José Armadans Rojas

    2014-04-01

    Full Text Available En el campo experimental de la Facultad de Ciencias Agrarias de la Universidad Nacional de Asunción San Lorenzo, Paraguay, se estudió la influencia del tipo de porta-injerto y la época de cosecha sobre la calidad del fruto del pomelo rosado (Citrus paradisis. Macfad var. Rio Red. Se utilizó un diseño experimental de bloques completos al azar con arreglo en parcelas subdivididas, siendo la parcela principal las épocas (abril, mayo y junio de cosecha y la subparcela los porta-injertos [tangelo Orlando -Citrus tangerina Hort. ex Tanaka x Citrus paradisi Macfad., limón rugoso -Citrus jambhiri Luch, lima Rangpur -Citrus limonia y Citrange C35 -Poncirus trifoliata (L. Raf. x Citrus sinensis (L. Osbeck cv. Ruby en cuatro repeticiones. Se cosecharon 10 frutos por unidad experimental y se evaluaron los caracteres morfológicos: diámetro y forma del fruto, y los porcentajes de jugo, bagazo, sólidos solubles totales,acidez titulable y relación o cociente entre sólidos solubles totales: acidez. Los resultados mostraron la influencia de los porta-injertos sobre la calidad del fruto del pomelo Rio Red. El limón rugoso fue el porta-injerto que presentó el menor porcentaje de jugo (47.33% y el mayor en bagazo (48.72%, sólido soluble (10.54% y acidez (1.42%. Mientras que el mayor porcentaje de jugo (52.76 y 50.75% se presentó en los frutos cosechados en abril y mayo. El mayor porcentaje de acidez se presentó en abril (9.53%.

  5. Streamflow gains and losses and selected water-quality observations in five subreaches of the Rio Grande/Rio Bravo del Norte from near Presidio to Langtry, Texas, Big Bend area, United States and Mexico, 2006

    Science.gov (United States)

    Raines, Timothy H.; Turco, Michael J.; Connor, Patrick J.; Bennett, Jeffery B.

    2012-01-01

    Few historical streamflow and water-quality data are available to characterize the segment of the Rio Grande/Rio Bravo del Norte (hereinafter Rio Grande) extending from near Presidio to near Langtry, Texas. The U.S. Geological Survey, in cooperation with the National Park Service and the Texas Commission on Environmental Quality, collected water-quality and streamflow data from the Rio Grande from near Presidio to near Langtry, Texas, to characterize the streamflow gain and loss and selected constituent concentrations in a 336.3-mile reach of the Rio Grande from near Presidio to near Langtry, Texas. Streamflow was measured at 38 sites and water-quality samples were collected at 20 sites along the Rio Grande in February, March, and June 2006. Streamflow gains and losses over the course of the stream were measured indirectly by computing the differences in measured streamflow between sites along the stream. Water-quality data were collected and analyzed for salinity, dissolved solids, major ions, nutrients, trace elements, and stable isotopes. Selected properties and constituents were compared to available Texas Commission on Environmental Quality general use protection criteria or screening levels. Summary statistics of selected water-quality data were computed for each of the five designated subreaches. Streamflow gain and loss and water-quality constituent concentration were compared for each subreach, rather than the entire segment because of the temporal variation in sample collection caused by controlled releases upstream. Subreach A was determined to be a losing reach, and subreaches B, C, D, and E were determined to be gaining reaches. Compared to concentrations measured in upstream subreaches, downstream subreaches exhibited evidence of dilution of selected constituent concentrations. Subreaches A and B had measured total dissolved solids, chloride, and sulfate exceeding the Texas Commission on Environmental Quality general use protection criteria

  6. Density structure of the cratonic mantle in southern Africa

    DEFF Research Database (Denmark)

    Artemieva, Irina; Vinnik, Lev P.

    2016-01-01

    The origin of high topography in southern Africa is enigmatic. By comparing topography in different cratons, we demonstrate that in southern Africa both the Archean and Proterozoic blocks have surface elevation 500-700. m higher than in any other craton worldwide, except for the Tanzanian Craton......-Natal fold belts, ca. 3.34-3.35g/cm3 in the Proterozoic Okwa block and the Bushveld Intrusion Complex, ca. 3.34-3.37g/cm3 in the Limpopo Belt, and ca. 3.32-3.33g/cm3 in the Kaapvaal and southern Zimbabwe cratons.The results indicate that 0.5-1.0. km of surface topography, with the most likely value of ca. 0...

  7. Geological evolution of the Antongil Craton, NE Madagascar

    Science.gov (United States)

    Schofield, D.I.; Thomas, Ronald J.; Goodenough, K.M.; De Waele, B.; Pitfield, P.E.J.; Key, R.M.; Bauer, W.; Walsh, G.J.; Lidke, D.J.; Ralison, A.V.; Rabarimanana, M.; Rafahatelo, J.-M.; Randriamananjara, T.

    2010-01-01

    The Antongil Craton, along with the Masora and Antananarivo cratons, make up the fundamental Archaean building blocks of the island of Madagascar. They were juxtaposed during the late-Neoproterozoic to early Palaeozoic assembly of Gondwana. In this paper we give a synthesis of the geology of the Antongil Craton and present previously published and new geochemical and U-Pb zircon analyses to provide an event history for its evolution.The oldest rocks in the Antongil Craton form a nucleus of tonalitic gneiss, characteristic of Palaeo-Mesoarchaean cratons globally, including phases dated between 3320 ?? 14. Ma to 3231 ?? 6. Ma and 3187 ?? 2. Ma to 3154 ?? 5. Ma. A series of mafic dykes was intruded into the Mesoarchaean tonalites and a sedimentary succession was deposited on the craton prior to pervasive deformation and migmatisation of the region. The age of deposition of the metasediments has been constrained from a volcanic horizon to around 3178 ?? 2. Ma and subject to migmatisation at around 2597 ?? 49. Ma. A subsequent magmatic episode generated voluminous, weakly foliated granitic rocks, that also included additions from both reworked older crustal material and younger source components. An earlier granodiorite-dominated assemblage, dated between 2570 ?? 18. Ma and 2542 ?? 5. Ma, is largely exposed in xenoliths and more continuously in the northern part of the craton, while a later monzogranite-dominated phase, dated between 2531 ?? 13. Ma and 2513 ?? 0.4. Ma is more widely developed. Together these record the stabilisation of the craton, attested to by the intrusion of a younger dyke swarm, the age of which is constrained by a sample of metagabbro dated at 2147 ?? 6. Ma, providing the first evidence for Palaeoproterozoic rocks from the Antongil Craton.The youngest events recorded in the isotopic record of the Antongil Craton are reflected in metamorphism, neocrystallisation and Pb-loss at 792 ?? 130. Ma to 763 ?? 13. Ma and 553 ?? 68. Ma. These events are

  8. Prevalence of smoking among employees of a university hospital Prevalencia del tabaquismo en funcionarios de un hospital universitario Prevalência do tabagismo em funcionários de um hospital universitário

    Directory of Open Access Journals (Sweden)

    Isabel Cristina Echer

    2011-02-01

    Full Text Available This cross-sectional study aimed to identify the prevalence of smoking among employees of a university hospital in Southern Brazil. Data collection happened in 2008, during the periodic health exam, using a questionnaire, according to the smoking status of the employees. The sample consisted of 1,475 subjects, in which 979 (66.4% were non-smokers, 295 (20% former smokers and 201 (13.6% smokers. Smoking was more prevalent among employees with lower education levels and among professionals in administrative positions. Among smokers, low dependence was identified, as well as desire and high degree of motivation to stop smoking, with health concerns as the main reason. Thus, taking into account the motivation of smokers to stop smoking, this is an appropriate time for health education and specific support to employees in the process of smoking cessation.Estudio transversal con objetivo de identificar a prevalencia del tabaquismo en funcionarios de un hospital universitario del sur de Brasil. La recolección de datos ocurrió en el año de 2008, durante el examen periódico de salud de los funcionarios, por medio de cuestionario de acuerdo con la condición de fumador de los mismos. La muestra se constituyó de 1.475 sujetos, de estos 979 (66,4% no fumaban, 295 (20% ex-fumantes y 201 (13,6% fumantes. El predominio de fumantes está entre funcionarios con menor nivel de instrucción y entre los que ejercían actividades en cargos administrativos. Se identificó entre los fumantes, dependencia leve, deseo y grado de motivación elevado para cesar el tabaquismo, siendo el principal motivo la preocupación con la salud. Así, considerándose la motivación de los funcionarios para parar de fumar, se recomienda aprovechar este momento para realizar un trabajo de educación en salud y de apoyo profesional específico para que el proceso de cesación del tabaquismo ocurra.Este é um estudo transversal, e teve como objetivo identificar a prevalência do

  9. Construction and destruction of some North American cratons

    Science.gov (United States)

    Snyder, D. B.; Humphreys, G.

    2015-12-01

    Construction histories of Archean cratons remain poorly understood; their destruction is even less clear because of, by definition, its rarity. By assembling geophysical and geochemical data in 3-D lithosphere models, a clearer understanding of the geometry of major structures within the Rae, Slave and Wyoming cratons of central North America is now possible. Little evidence exists of subducted slabs similar to modern oceanic lithosphere in these construction histories whereas underthrusting and wedging of proto-continental lithosphere is inferred from multiple dipping discontinuities. Archean continental building blocks may resemble the modern lithosphere of Ontong-Java-Hikurangi oceanic plateau. Radiometric dating of xenoliths provides estimates of rock types and ages at depth beneath sparse kimberlite occurrences. These ages can be correlated to surface rocks. The 3.6-2.6 Ga Rae, Slave and Wyoming cratons comprise smaller continental terranes that 'cratonized' during a granitic bloom at 2.61-2.55 ga. Cratonization probably represents the final differentiation of early crust into a relatively homogeneous, uniformly thin (35-42 km), tonalite-trondhjemite-granodiorite crust with pyroxenite layers near the Moho atop depleted lithospheric mantle. Peak thermo-tectonic events at 1.86-1.7 Ga broadly metasomatized, mineralized and recrystallized mantle and lower crustal rocks, apparently making mantle peridotite more 'fertile' and conductive by introducing or concentrating sulfides or graphite throughout the lithosphere at 80-120 km depths. This metasomatism may have also weakened the lithosphere or made it more susceptible to tectonic or chemical erosion. The arrival of the subducted Shatsky Rise conjugate at the Wyoming craton at 65-75 Ma appears to have eroded and displaced the thus weakened base of the craton below 140-160 km. This replaced old refertilized continental mantle with new depleted oceanic mantle. Is this the same craton?

  10. Capacidad de las tierras para uso agricola en la subcuenca media-alta del Rio Pirris, Los Santos, Costa Rica

    National Research Council Canada - National Science Library

    Chinchilla, Miguel; Alvarado, Alfredo; Mata, Rafael

    2011-01-01

    .... Entre los 1075 y 1700 m de elevacion, la principal actividad agricola es el cultivo del cafe, desarrollado sobre suelos arcillosos del orden de los Ultisoles con importantes manifestaciones de erosion...

  11. Variacion genetica y flujo de genes entre poblaciones de Crocodylus acutus en tres rios del Pacifico Central, Costa Rica

    National Research Council Canada - National Science Library

    Porras Murillo, Laura Patricia; Bolanos Montero, Juan Rafael; Robert Barr, Brady

    2008-01-01

    .... acutus provenientes de los rios Jesus Maria, Tarcoles y Tusubres en el Pacifico Central de Costa Rica para estimar la diversidad genetica, la diferenciacion entre poblaciones, el flujo genetico y la distancia genetica...

  12. Fundamentos para una "Teoría Pural del Derecho Agrário" Contemporáneo (Parte II)

    OpenAIRE

    Zeledón, Ricardo Zeledón; Unión Mundial de Agraristas Universitarios.

    2014-01-01

    En este artículo, dividido en dos partes, el autor trata de demostrar cómo la “Teoría pura del Derecho agrario” constituye un intento visionario hacia el futuro, dentro del Derecho agrario contemporáneo, para vincular la Ciencia del Derecho con la Filosofía del Derecho. En este sentido, tiene como objetivo depurar el Derecho agrario de toda “contaminación” extraña al preciso contenido de la materia con una visión de Tridimensionalismo epistemológico, donde el nuevo estudio del objeto, el méto...

  13. Delineando un modelo de cuidado a partir del análisis sistemático de la actividad diaria del enfermero en un hospital universitario de Rio de Janeiro

    Directory of Open Access Journals (Sweden)

    Joséte Luzia Leite

    2010-01-01

    Full Text Available Esta investigación deriva del proyecto titulado "El análisis sistemático del cuidado a las personas con VIH / SIDA: la construcción de un modelo nacional", apoyado por el Consejo Nacional de Desarrollo Científico y Tecnológico. Este proyecto integra el Núcleo de investigación "Gestión en salud y práctica profesional de la enfermería" del Departamento de Metodología de la Escuela de Enfermería Anna Nery de la Universidade Federal do Rio de Janeiro, en la línea de investigación "Modelos asistenciales, conocimientos y paradigmas". Esta es una investigación cualitativa del tipo descriptivo-exploratorio que tiene como objetivos analizar las formas de cuidado prestado a los pacientes seropositivos para el VIH a partir de declaraciones de algunos enfermeros, y proponer un modelo de cuidado basado en la información obtenida. Los datos fueron recolectados después de la autorización del Comité de Ética con respecto al protocolo 10/2006. Se concluye que la construcción de un modelo de cuidado para los pacientes con el VIH se construye a partir del cuidado como competencia / actualización del profesional enfermero, en el conocimiento acerca de los progresos y las implicaciones de la patología / SIDA, y en las condiciones del ser humano / paciente con VIH. Se comprende que el modelo indica al enfermero la importancia de la competencia técnico-científica y política, y la postura ética crítica-reflexiva acerca de las intervenciones del cuidado al paciente con el VIH.

  14. Thin lithosphere-asthenosphere boundary beneath Eastern Indian craton

    Science.gov (United States)

    Shalivahan; Bhattacharya, Bimalendu B.; Rao, N. V. Chalapathi; Maurya, V. P.

    2014-02-01

    The lithosphere-asthenosphere boundary (LAB) separates the hard and rigid outer layer of the earth (lithosphere) and the weaker, hotter, and deeper part of the upper mantle (asthenosphere) and plays a pivotal role in plate tectonics. However, its definitive detection, especially beneath the cratons, is proving elusive. One of the geophysical tools used to map the LAB beneath the cratons is through magnetotelluric (MT) observations. The resistivity at boundary falls in the range of 5-25 Ω-m and can be explained by the presence of a small amount of water in the asthenosphere, possibly inducing partial melt. Here, we report thickness of the LAB in one of the oldest dated ancient cratons of India-Eastern Indian Craton (EIC) of ~ 3.3 Gyr, from MT studies. The two prominent phase-sensitive strike directions, one each for crust and mantle, and the presence of resistive continental lower crust act as a window to mantle in resolving deeper electrical conductivity structures beneath EIC. Our results show that the LAB beneath the EIC is at 95 km. The region is interesting as the electrical properties of the crust and mantle and the Moho depth are similar to those of the Slave Craton, Canada (~ 4.0 Gyr) but the depth of the LAB beneath the EIC is half that of the Slave craton. As cratonic signatures, depicted by ultrapotassic rocks from Gondwana coal fields close to EIC, are preserved at least till early Cretaceous (117 Ma) it is likely that Himalayan orogeny could have played a major role in delamination of the lithospheric roots of the EIC in addition to attendant seismicity.

  15. Mapping the edge of the Cerros del Rio volcanic field, New Mexico: a piece of the puzzle to understanding a potential geothermal resource

    Science.gov (United States)

    Pellerin, L.; Gallegos, M.; Goebel, M.; Murphy, B. S.; Smith, J.; Soto, D.; Swiatlowski, J.; Volk, C.; Welch, M.; Feucht, D. W.; Hollingshaus, B.; Bedrosian, P. A.; McPhee, D. K.

    2012-12-01

    The Cerros del Rio volcanic field located west of Santa Fe, New Mexico spans the southwestern part of the Espanola Basin with the Rio Grande to the west. Underlying the volcanics are the Santa Fe Group sediments, which contain the Ancha Formation, an important aquifer in the region. High temperature gradients in water wells reveal a potential geothermal prospect. In 2012 the Summer of Applied Geophysical Experience (SAGE) program acquired transient electromagnetic (TEM), audiomagnetotelluric (AMT), gravity and ground magnetic data to determine the buried eastern margin of the volcanic field and the connectivity related to the underlying sediments. The roughly EW 5-km long transect was sited from USGS aeromagnetic data to cross the boundary of the Cerros del Rio volcanic field. TEM data collected at ten stations, at 200-400 m spacing, along the transect employed an in-loop configuration with a square 100 m x 100 m transmitter loop and both a Zonge receiver coil and a 5 m square receiver loop. The 5 m loop allowed for the recovery of early-time data that was saturated when using the Zonge coil. AMT data were acquired at eight stations, at 400-500 m spacing, using the Geometric Stratagem system recording from 92 kHz to 10 Hz; a horizontal magnetic dipole transmitter was used to augment low signal strength at around 1 kHz. Gravity data along the profile were acquired using CG-3 and CG-5 Scintrex gravimeters with a station interval >250 m. Magnetic data were acquired with a Geometrics Cesium vapor G-858 magnetometer for about 3500 m along the profile at a 0.5 second sampling rate. Two volcanic flows interbedded with Ancha Formation and overlying Santa Fe Group sediments were identified in both the TEM and AMT modeling. High surface resistivity zones (>300 ohm-m) with depths ranging from ~100 to 300 m define the volcanic flows and correspond to high densities (2.3 to 2.55 g/cm3), while low resistivity zones (<30 ohm-m) correspond to lower densities (~2.1 g/cm3). High

  16. Adaptação intercultural para português europeu do questionário "Conocimiento del Paciente sobre sus Medicamentos" (CPM-ES-ES

    Directory of Open Access Journals (Sweden)

    Joaquín Salmerón Rubio

    2013-12-01

    Full Text Available O objetivo deste trabalho é realizar a adaptação intercultural do espanhol para português europeu do questionário para medir o grau do "Conocimiento del Paciente sobre sus Medicamentos" (CPM-ES-ES. Aplicou-se um método baseado em seis etapas: 1. Tradução para português; 2. Preparação da primeira versão de consenso em português; 3. Retroversão para espanhol; 4. Preparação da segunda versão (equivalência cultural de consenso; 5. Realização do pré-teste; 6. Avaliação dos resultados globais. Propõe-se um questionário adaptado culturalmente em português europeu que mede o grau do "conhecimento do doente sobre os seus medicamentos". O pré-teste de confirmação obteve 100% de concordância com a segunda versão de Consenso corrigida após o pré-teste. A metodologia selecionada permitiu adaptar culturalmente a versão em espanhol do questionário CPM-ES-ES para uma versão em português. Estudos adicionais devem demonstrar a equivalência das propriedades psicométricas da tradução intercultural em português do questionário com a versão original.

  17. ANÁLISIS SOCIOECONÓMICO DE LA CUENCA DEL RIO CUALE, JALISCO, MÉXICO: UNA CONTRIBUCIÓN PARA LA DECLARACIÓN DEL ÁREA NATURAL PROTEGIDA RESERVA DE LA BIOSFERA EL CUALE

    OpenAIRE

    Jorge Téllez López; Juana A. Delgado Quintana; Cruz Romero Bartolo; Fátima M. Carrillo Gonzalez

    2013-01-01

    Durante los meses de enero a mayo de 2013, a través de la metodología propuesta por Alciaturi (2009); se realizó el análisis de los factores socioeconómicos involucrados en la cuenca del rio Cuale, Jalisco, México. Los resultados incluyeron aspectos relacionados con la dinámica demográfica, grado de marginación, nivel educativo, población económicamente activa, principales actividades económicas, comunidades rurales, descripción socioeconómica, potenciales de los recursos naturales, usos y ap...

  18. Diversidad, abundancia estacional y uso de hábitat de aves playeras migratorias en el estuario del Rio Gallegos (Santa Cruz

    Directory of Open Access Journals (Sweden)

    Florencia Anahí Becerra

    2014-06-01

    Full Text Available Diversidad, abundancia estacional y uso de hábitat de aves playeras migratorias en el estuario del rio Gallegos (Santa Cruz. Se presenta información sobre la condición actual de las aves playeras migratorias en un sector del estuario, adyacente a la ciudad de Río Gallegos, que está sujeto a diversos cambios provenientes del uso urbano. Desde marzo de 2011 a enero de 2012, se realizaron 52 visitas a 5 estaciones de muestreo, recorriéndose transectas perpendiculares a la costa. La diversidad específica fue mayor en primavera, superando en más del doble al resto de las estaciones. Del análisis comparativo entre los resultados obtenidos y estudios previos, surgió que la riqueza específica no presentó cambios, manteniéndose entre 8/9 especies. Los cambios más notables en la comunidad no obstante, se presentaron en la abundancia máxima por especie y uso del hábitat, excepto el Ostrero Austral que mantuvo su abundancia, resultando dominante (Frecuencia de Ocurrencia= 92%. El resto de las especies disminuyeron drásticamente el uso del área, como el Playerito Rabadilla Blanca (99%, Becasa de Mar (96,3% y Playero Rojizo (97,4%, en relación a registros históricos de 1997/99. Los hábitats más utilizados fueron el sustrato limo-arcilloso y el arenoso, mientras que la marisma fue la de menor uso, a pesar de que existen reportes anteriores de uso frecuente por varias especies. Se discuten las posibles causas de estos cambios y se efectúan recomendaciones, como la necesidad de mantener un mosaico de diferentes tipos de hábitats, la estructura del sustrato y la Reserva Costera Urbana, siendo necesario la planificación y estudio previo ante cualquier acción antrópica que altere el natural equilibrio erosivo-sedimentario de estos frágiles ecosistemas.

  19. A Conceptual Model to Link Anomalously High Temperature Gradients in the Cerros del Rio Volcanic Field to Regional Flow in the Espanola Basin, New Mexico

    Science.gov (United States)

    Fillingham, E. J.; Keller, S. N.; McCullough, K. R.; Watters, J.; Weitering, B.; Wilce, A. M.; Folsom, M.; Kelley, S.; Pellerin, L.

    2015-12-01

    Temperature-depth well data along with electromagnetic (EM) data were collected by students of the Summer of Applied Geophysics Experience (SAGE) 2015 field season in the Espanola Basin, New Mexico. The data from this year, in addition to data acquired since 2013, were used to construct a conceptual east-west cross-section of the Espanola Basin and the adjacent highlands in order to evaluate the regional flow system. Vertical geothermal gradients from several monitoring wells were measured using a thermistor. Anomalously warm geothermal gradients were mapped in the Cerros del Rio volcanic field in the basin just east of the Rio Grande. Temperature gradients are up to 70℃/km, while the background geothermal gradients in the Rio Grande rift zone generally show 28℃-35℃/km. This anomaly extends to the Buckman well field, which supplies water to the city of Santa Fe. Overpumping of this well field has led to subsidence in the past. However, discharge temperature plots indicate that the temperature gradients of the Buckman field may be rebounding as pumping is reduced. Audiomagnetotelluric (AMT) and transient electromagnetic (TEM) data were acquired in the vicinity of three monitoring wells. TEM and AMT methods complement each other with the former having depths of investigation of less than ten to hundreds of meters and AMT having depths of investigation comparable to the wells deeper than 500m. These datasets were used collectively to image the subsurface stratigraphy and, more specifically, the hydrogeology related to shallow aquifers. The EM data collected at these wells showed a trend indicating a shallow aquifer with a shallower resistive layer of approximately 100 ohm-m at 70-100 meters depth. Beneath this resistive layer we resolved a more conductive, clay-rich layer of 10 ohm-m. These resistivity profiles compliment the electrical logs provided by Jet West, which indicate shallower sandstone interbedded with silt on top of more silt-dominant layers. Our

  20. Structure and extent of the southern African cratons: Integrated images from receiver functions and teleseimic tomography

    DEFF Research Database (Denmark)

    Soliman, Mohammad Youssof Ahmad; Levander, Alan; Bezada, Max

    2011-01-01

    beneath the Kaapvaal and Zimbabwe cratons. Smaller velocities are found under the Bushveld complex and the mobile belts. We also image significant positive and negative anomalies (Vp= ±3.0% and Vs= ±0.5%) unconnected to the cratons under the cratonic keels and in the transition zone. Inverting the P wave...

  1. The Role of Water in the Stability of Cratonic Keels

    Science.gov (United States)

    Peslier, Anne H.; Woodland, Alan B.; Bell, David R.; Lazarov, Marina

    2011-01-01

    Cratons are typically underlain by large, deep, and old lithospheric keels (to greater than 200 km depth, greater than 2.5 Ga old) projecting into the asthenosphere (e.g., Jordan, 1978; Richardson et al., 1984). This has mystified Earth scientists as the dynamic and relatively hot asthenosphere should have eroded away these keels over time (e.g., Sleep, 2003; O'Neill et al., 2008; Karato, 2010). Three key factors have been invoked to explain cratonic root survival: 1) Low density makes the cratonic mantle buoyant (e.g., Poudjom Djomani et al., 2001). 2) Low temperatures (e.g., Pollack, 1986; Boyd, 1987), and 3) low water contents (e.g., Pollack, 1986), would make cratonic roots mechanically strong. Here we address the mechanism of the longevity of continental mantle lithosphere by focusing on the water parameter. Although nominally anhydrous , olivine, pyroxene and garnet can accommodate trace amounts of water in the form of H bonded to structural O in mineral defects (e.g., Bell and Rossman, 1992). Olivine softens by orders of magnitude if water (1-1000 ppm H2O) is added to its structure (e.g., Mackwell et al., 1985). Our recent work has placed constraints on the distribution of water measured in peridotite minerals in the cratonic root beneath the Kaapvaal in southern Africa (Peslier et al., 2010). At P greater than 5 GPa, the water contents of pyroxene remain relatively constant while those of olivine systematically decrease from 50 to less than 10 ppm H2O at 6.4 GPa. We hypothesized that at P greater than 6.4 GPa, i.e. at the bottom of the cratonic lithosphere, olivines are essentially dry (greater than 10 ppm H2O). As olivine likely controls the rheology of the mantle, we calculated that the dry olivines could be responsible for a contrast in viscosity between cratonic lithosphere and surrounding asthenosphere large enough to explain the resistance of cratonic root to asthenospheric delamination.

  2. Formation of cratonic lithosphere: An integrated thermal and petrological model

    Science.gov (United States)

    Herzberg, Claude; Rudnick, Roberta

    2012-09-01

    The formation of cratonic mantle peridotite of Archean age is examined within the time frame of Earth's thermal history, and how it was expressed by temporal variations in magma and residue petrology. Peridotite residues that occupy the lithospheric mantle are rare owing to the effects of melt-rock reaction, metasomatism, and refertilization. Where they are identified, they are very similar to the predicted harzburgite residues of primary magmas of the dominant basalts in greenstone belts, which formed in a non-arc setting (referred to here as "non-arc basalts"). The compositions of these basalts indicate high temperatures of formation that are well-described by the thermal history model of Korenaga. In this model, peridotite residues of extensive ambient mantle melting had the highest Mg-numbers, lowest FeO contents, and lowest densities at ~ 2.5-3.5 Ga. These results are in good agreement with Re-Os ages of kimberlite-hosted cratonic mantle xenoliths and enclosed sulfides, and provide support for the hypothesis of Jordan that low densities of cratonic mantle are a measure of their high preservation potential. Cratonization of the Earth reached its zenith at ~ 2.5-3.5 Ga when ambient mantle was hot and extensive melting produced oceanic crust 30-45 km thick. However, there is a mass imbalance exhibited by the craton-wide distribution of harzburgite residues and the paucity of their complementary magmas that had compositions like the non-arc basalts. We suggest that the problem of the missing basaltic oceanic crust can be resolved by its hydration, cooling and partial transformation to eclogite, which caused foundering of the entire lithosphere. Some of the oceanic crust partially melted during foundering to produce continental crust composed of tonalite-trondhjemite-granodiorite (TTG). The remaining lithosphere gravitationally separated into 1) residual eclogite that continued its descent, and 2) buoyant harzburgite diapirs that rose to underplate cratonic nuclei

  3. A cost-effectiveness analysis of a program to control rheumatic fever and rheumatic heart disease in Pinar del Rio, Cuba.

    Science.gov (United States)

    Watkins, David A; Mvundura, Mercy; Nordet, Porfirio; Mayosi, Bongani M

    2015-01-01

    Acute rheumatic fever (ARF) and rheumatic heart disease (RHD) persist in many low- and middle-income countries. To date, the cost-effectiveness of population-based, combined primary and secondary prevention strategies has not been assessed. In the Pinar del Rio province of Cuba, a comprehensive ARF/RHD control program was undertaken over 1986-1996. The present study analyzes the cost-effectiveness of this Cuban program. We developed a decision tree model based on the natural history of ARF/RHD, comparing the costs and effectiveness of the 10-year Cuban program to a "do nothing" approach. Our population of interest was the cohort of children aged 5-24 years resident in Pinar del Rio in 1986. We assessed costs and health outcomes over a lifetime horizon, and we took the healthcare system perspective on costs but did not apply a discount rate. We used epidemiologic, clinical, and direct medical cost inputs that were previously collected for publications on the Cuban program. We estimated health gains as disability-adjusted life years (DALYs) averted using standard approaches developed for the Global Burden of Disease studies. Cost-effectiveness acceptability thresholds were defined by one and three times per capita gross domestic product per DALY averted. We also conducted an uncertainty analysis using Monte Carlo simulations and several scenario analyses exploring the impact of alternative assumptions about the program's effects and costs. We found that, compared to doing nothing, the Cuban program averted 5051 DALYs (1844 per 100,000 school-aged children) and saved $7,848,590 (2010 USD) despite a total program cost of $202,890 over 10 years. In the scenario analyses, the program remained cost saving when a lower level of effectiveness and a reduction in averted years of life lost were assumed. In a worst-case scenario including 20-fold higher costs, the program still had a 100% of being cost-effective and an 85% chance of being cost saving. A 10-year program to

  4. Multi-stage crustal growth and cratonization of the North China Craton

    Directory of Open Access Journals (Sweden)

    Mingguo Zhai

    2014-07-01

    The ∼2.5 Ga metamorphic-magmatic event is stronger than in most other cratons in the world. How to understand the geological significance of the 2.5 Ga event? The following points are emphasized: (1 nearly all old rocks >2.5 Ga underwent metamorphism at ∼2.52–2.5 Ga; (2 Archean basement rocks in the NCC experienced strong partial melting and migmatization; (3 granitoid rocks derived from partial melting include potassium granites, TTG granites and monzonites. These granitoids rocks intruded both the Archean greenstone belts and micro-blocks; (4 ∼2.5 Ga mafic dikes (amphibolites, granitic dikes (veins and syenitic-ultramafic dykes are also developed. Therefore, we suggest an assembly model that all micro-blocks in the NCC were welded together by late Archean greenstone belts at the end of the late Neoarchean. We also propose that the various micro-blocks were surrounded by small ocean basins, and the old continental crust and the oceanic crust were hotter than today. Subduction and collision were on much smaller scales as compared to the Phanerozoic plate tectonic regime, although the tectonic style and mechanisms were more or less similar. The formation of crustal melt granites is one of the processes of cratonization, inducing generation of stable upper and lower crustal layers. This process also generated an upper crust of more felsic composition and a lower crust of more mafic composition, due to molten residual materials and some underplated gabbros.

  5. The birth of oligodendrocytes in the anatomical and neuropathological literature: the seminal contribution of Pio del Rio-Hortega. 1921.

    Science.gov (United States)

    Lassmann, Hans

    2012-01-01

    Comment on: del Río-Hortega P. Glia with very few processes (oligodendroglia). Clin Neuropathol. 2012; 31: 440-459, originally published in Archivos de Neurobiología. 1921; 2: 16-43 and del Río-Hortega P. Are the glia with very few processes homologous with Schwann cells? Clin Neuropathol. 2012; 31: 460-462, originally published in Bol de la Soc Esp de Biol. 1922; X: 25-28.

  6. Prevalência de síndrome metabólica em pacientes de um ambulatório do Instituto de Cardiologia do Rio Grande do Sul (RS Prevalencia del síndrome metabólico en pacientes de un ambulatorio del Instituto de Cardiología de Río Grande del Sur (RS Prevalence of metabolic syndrome in outpatients of the Institute of Cardiology of Rio Grande do Sul

    Directory of Open Access Journals (Sweden)

    Márcia Bopp

    2009-11-01

    Full Text Available FUNDAMENTO: A síndrome metabólica (SM é considerada um fator muito importante no desenvolvimento de doenças cardiovasculares (DCV. OBJETIVO: Avaliar a prevalência de síndrome metabólica (SM nos pacientes atendidos no ambulatório para a prevenção secundária de doença arterial coronariana do IC-FUC, bem como verificar o excesso de peso por meio do índice de massa corporal (IMC e a prevalência de obesidade abdominal na doença cardiovascular (DCV. MÉTODOS: A amostra final foi composta por 151 indivíduos (de 26 a 84 anos, cujos dados foram retirados da primeira consulta que apresentou exames sanguíneos de jejum, medidas da pressão arterial (PA, circunferência abdominal (CA em centímetros, peso e estatura, associando sexo e idade. Para A avaliação de SM, foi utilizado o conceito do NCEP-ATP III. RESULTADOS: O sexo masculino representou 64,9% da amostra. Foram encontrados índices de sobrepeso de 50% e obesidade de 21,3%, estando a CA aumentada presente em 30,8% dos indivíduos, 20 homens e 25 mulheres. Atendendo aos critérios do NCEP-ATP III para o diagnóstico de SM, a prevalência dessa síndrome foi de 61,5%, incluindo 54 homens e 39 mulheres. CONCLUSÃO: Verifica-se que a prevalência de SM em pacientes portadores de DCV no ambulatório para a prevenção secundária de DAC do IC-FUC é elevada, tendo também como característica a alta prevalência de sobrepeso, obesidade e CA aumentada.FUNDAMENTO: El síndrome metabólico (SM es considerado un factor muy importante en el desarrollo de enfermedades cardiovasculares (ECV. OBJETIVO: Evaluar la prevalencia del síndrome metabólico (SM en los pacientes atendidos en el ambulatorio para la prevención secundaria de una enfermedad arterial coronaria del IC-FUC, así como verificar el exceso de peso por medio del índice de masa corporal (IMC y la prevalencia de obesidad abdominal en la enfermedad cardiovascular (ECV. MÉTODOS: La muestra final estuvo compuesta por 151 individuos

  7. The story of a craton from heart to margins: illuminating cratonic lithosphere with Rayleigh wave phase velocities in Eastern Canada

    Science.gov (United States)

    Petrescu, L.; Darbyshire, F. A.; Gilligan, A.; Bastow, I. D.; Totten, E. J.

    2015-12-01

    Cratons are Precambrian continental nuclei that are geologically distinct from modern continental regions and are typically underlain by seismically fast lithospheric roots (keels) to at least 200 km depth. Both plate and non-plate tectonic origin theories such as stacking of subducted slabs or multiple mantle plume underplating have been proposed to explain keel growth.Eastern Canada is an ideal continental region to investigate cratonization processes and the onset of plate tectonics. It comprises part of the largest Archean craton in the world, the Superior Province, flanked by a ~1.1 Ga Himalayan-scale orogenic belt, the Grenville Province, and the 500-300 Ma old Appalachian orogenic province, following the same general SW-NE axial trend. The region is also cross-cut by the Great Meteor Hotspot track, providing an excellent opportunity to study the interaction of hotspot tectonism with progressively younger lithospheric domains.We investigate the lithospheric structure of Precambrian Eastern Canada using teleseismic earthquake data recorded at permanent and temporary networks. We measure interstation dispersion curves of Rayleigh wave phase velocities between ~15 and 220 s, and compare the results to standard continental and cratonic reference models. We combine the dispersion curves via a tomographic inversion which solves for isotropic phase velocity heterogeneity and azimuthal anisotropy across the region at a range of periods. The phase velocity maps indicate variations in lithospheric properties from the heart of the Superior craton to the SE Canadian coast.The new regional-scale models will help to understand the processes that generated, stabilized and reworked the cratonic roots through their billion-year tectonic history. We investigate how surface tectonic boundaries relate to deeper lithospheric structural changes, and consider the effects of the multiple Wilson cycles that affected Laurentia.

  8. Delírio, fantasia e devaneio: sobre a função da vida imaginativa na teoria psicanalítica

    Directory of Open Access Journals (Sweden)

    Thaís de Souza Teixeira

    Full Text Available Trabalho teórico de enfoque psicanalítico, cujo objetivo é estudar os fenômenos de delírio, fantasia e devaneio de forma a compreender sua natureza e seus processos, mecanismos e funções dentro da dinâmica psíquica humana. Utilizam-se os casos de referência, “Homem dos ratos”, o “Caso Schreber” e a “‘Gradiva’ de Jensen”, além do artigo de Freud “Uma criança é espancada”, para ilustrar as reflexões. Conclui-se que os três são conceitos estruturalmente diferentes, com processos, mecanismos e funções próprios, mas com aproximações que os tornam passíveis de confusão.

  9. Distribuição do parto vaginal e da cesariana no município do Rio de Janeiro no período de 2001 a 2004 Distribución del parto vaginal y de la cesarea en el municipio del Rio de Janeiro en el periodo de 2001 hasta 2004 Distribution of the vaginal birth and of the cesarean in the city of Rio de Janeiro from 2001 to 2004

    Directory of Open Access Journals (Sweden)

    Virginia Maria de Azevedo Oliveira Knupp

    2008-03-01

    Full Text Available O parto vaginal é um processo natural que acontece por si mesmo, não necessitando da intervenção de terceiro. A cesariana é uma intervenção médica sobre um processo que a natureza resolve e regula sem artifícios. O objetivo desse estudo é analisar a distribuição do parto vaginal e da cesariana no Município do Rio de Janeiro no período de 2001 a 2004 e estudálos segundo as variáveis: raça da parturiente, área de planejamento de residência, local de ocorrência, natureza jurídica do hospital, faixa etária, estado civil e escolaridade da mãe, consulta pré-natal e Apgar no 1º minuto. Estudo descritivo de base populacional, que analisou as Declarações de Nascidos Vivos do Município do Rio de Janeiro em 2001 a 2004 através do Sistema de Informações sobre Nascidos Vivos. As altas taxas de cesariana foram observadas nas regiões com maior poder econômico, instituições privadas, em mulheres acima de 35 anos, em casadas e com maior escolaridade.El parto vaginal es un proceso que acontece por si mismo, no habiendo necesidad de intervención de terceros. La cesarea es una intervención médica sobre un proceso que la naturaleza resolve sin artificios. El objetivo de este estudio es analizar la distribución del parto vaginal y de la cesarea en el Municipio del Rio de Janeiro en el periodo de 2001 hasta 2004 y estudiar según las variables: raza de la parturiente, área de planificación de residencia, ubicación de ocurrencia, naturaleza jurídica del hospital,edad, estado civil y escolaridad de la madre, consulta prenatal y Apgar en el primer minuto. Estudio descriptivo de base poblacional, que analisó las Declaraciones de Nacidos Vivos del Municipio del Rio de Janeiro en 2001 hasta 2004 a través del Sistema de Información sobre Nacidos Vivos. Las altas tazas de cesarea fueron observadas en las regiones con mayor poder económico, instituciones privadas, en mujeres con más de 35 años, en casadas y con mayor escolaridad

  10. Late Archaean mantle metasomatism below eastern Indian craton ...

    Indian Academy of Sciences (India)

    Home; Journals; Journal of Earth System Science; Volume 113; Issue 4. Late Archaean mantle metasomatism below eastern Indian craton: Evidence from trace elements, REE geochemistry and Sr-Nd-O isotope systematics of ultramafic dykes. Abhijit Roy A Sarkar S Jeyakumar S K Aggrawal M Ebihara H Satoh. Volume ...

  11. Magnetic anomalies across Bastar craton and Pranhita–Godavari ...

    Indian Academy of Sciences (India)

    ites of Paleoproterozoic, and volcano-sedimentary sequences of Bailadila group and Abujmar group of rocks at around Dantewara. The Neo-proterozoic sedimentary basin (Indravati basin) is also iden- tified in this craton. Bhopalapatnam granulites are found in a narrow NNW–SSE trending belt west of Bhopalapatnam.

  12. Proterozoic orogenic belts and rifting of Indian cratons: Geophysical constraints

    Directory of Open Access Journals (Sweden)

    D.C. Mishra

    2014-01-01

    Full Text Available The Aravalli–Delhi and Satpura Mobile Belts (ADMB and SMB and the Eastern Ghat Mobile Belt (EGMB in India form major Proterozoic mobile belts with adjoining cratons and contemporary basins. The most convincing features of the ADMB and the SMB have been the crustal layers dipping from both sides in opposite directions, crustal thickening (∼45 km and high density and high conductivity rocks in upper/lower crust associated with faults/thrusts. These observations indicate convergence while domal type reflectors in the lower crust suggest an extensional rifting phase. In case of the SMB, even the remnant of the subducting slab characterized by high conductive and low density slab in lithospheric mantle up to ∼120 km across the Purna–Godavari river faults has been traced which may be caused by fluids due to metamorphism. Subduction related intrusives of the SMB south of it and the ADMB west of it suggest N–S and E–W directed convergence and subduction during Meso–Neoproterozoic convergence. The simultaneous E–W convergence between the Bundelkhand craton and Marwar craton (Western Rajasthan across the ADMB and the N–S convergence between the Bundelkhand craton and the Bhandara and Dharwar cratons across the SMB suggest that the forces of convergence might have been in a NE–SW direction with E–W and N–S components in the two cases, respectively. This explains the arcuate shaped collision zone of the ADMB and the SMB which are connected in their western part. The Eastern Ghat Mobile Belt (EGMB also shows signatures of E–W directed Meso–Neoproterozoic convergence with East Antarctica similar to ADMB in north India. Foreland basins such as Vindhyan (ADMB–SMB, and Kurnool (EGMB Supergroups of rocks were formed during this convergence. Older rocks such as Aravalli (ADMB, Mahakoshal–Bijawar (SMB, and Cuddapah (EGMB Supergroups of rocks with several basic/ultrabasic intrusives along these mobile belts, plausibly formed during

  13. EVOLUCION DE LAS ESTRUCTURAS ASOCIADAS A LA ECOLOCALIZACION EN DELFINES DE RIO Y MARINOS (CETACEA, ODONTOCETI) DE AMERICA DEL SUR

    OpenAIRE

    SIMON GUTSTEIN, CAROLINA

    2013-01-01

    La evolucion de la ecolocalizacion en los odontocetos ha sido ampliamente estudiada y consiste en la emision de un haz de sonido de alta recuencia, recepcion de ecos del sonido emitido y su procesamiento neurologico. La ecolocalizacion, comun a todos los odontocetos actuales, se diferencia en las propiedades acusticas entre los taxones y tal vez en la preferencia de habitat. Se ha estudiado la emision de sonidos de alta frecuencia y la formación del haz de sonido, tanto con modelos computacio...

  14. Researcher's personal diary as research tool Diarios personales del investigador como herramienta de investigación Diários pessoais do pesquisador como instrumento de pesquisa

    Directory of Open Access Journals (Sweden)

    JIMÉNEZ LUZ DARY DARY

    2008-12-01

    tiene aplicación en el marco de la investigación en enfermería sino dentro del mismo ejercicio profesional.Este documento está baseado na revisão dos diários pessoais dos entrevistadores que fazem parte de uma equipe de pesquisa do sul de Florida, Estados Unidos. O trabalho original aprofundou nos padrões de atenção médica domiciliária para adultos maiores. Os diários pessoais reflexivos propiciaram uma discussão mais abrangente sobre o objeto da pesquisa, apresentaram o lado humano dos dados quantitativos e, considerando a natureza sensível da questão levantada, serviram para que os pesquisadores identificassem e estudassem suas próprias emoções a respeito dos encontros com os participantes do levantamento. Nossa experiência confirma a necessidade de usar instrumentos metodológicos qualitativos para desvendar o fenômeno pesquisado "na forma como ele acontece", junto com o uso complementar da evidência quantitativa. O levantamento argúi que manter uma disposição aberta e auto-reflexiva, no ambiente atual de entusiasmo pela prática baseada em evidências, não é apenas aplicável no âmbito da pesquisa em enfermagem, mas dentro o próprio exercício profissional.

  15. Diarios personales del investigador como herramienta de investigación Diários pessoais do pesquisador como instrumento de pesquisa Researcher's personal diary as research tool

    Directory of Open Access Journals (Sweden)

    CARLOS FERNANDO MAYORGA

    2008-12-01

    Full Text Available Este documento se basa en la revisión de los diarios personales de los entrevistadores que forman parte de un equipo de investigación del sur de Florida, Estados Unidos. El estudio original exploró los patrones del cuidado provisto a los adultos mayores en el hogar. Los diarios personales reflexivos estimularon una discusión más amplia del tema investigado, presentaron el aspecto humano de los datos cuantitativos y, dado el carácter sensible del tema estudiado, sirvieron para que los investigadores identificaran y exploraran sus propias emociones frente a los encuentros con los participantes del estudio. Nuestra experiencia confirma la necesidad de utilizar instrumentos metodológicos cualitativos que ayuden a revelar el fenómeno investigado "tal y como ocurre", mediante la complementación de la evidencia cuantitativa. Se argumenta que el mantenimiento de una actitud abierta y autorreflexiva, en medio del actual entusiasmo por la práctica basada en la evidencia, no solo tiene aplicación en el marco de la investigación en enfermería sino dentro del mismo ejercicio profesionalEste documento está baseado na revisão dos diários pessoais dos entrevistadores que fazem parte de uma equipe de pesquisa do sul de Florida, Estados Unidos. O trabalho original aprofundou nos padrões de atenção médica domiciliária para adultos maiores. Os diários pessoais reflexivos propiciaram uma discussão mais abrangente sobre o objeto da pesquisa, apresentaram o lado humano dos dados quantitativos e, considerando a natureza sensível da questão levantada, serviram para que os pesquisadores identificassem e estudassem suas próprias emoções a respeito dos encontros com os participantes do levantamento. Nossa experiência confirma a necessidade de usar instrumentos metodológicos qualitativos para desvendar o fenômeno pesquisado "na forma como ele acontece", junto com o uso complementar da evidência quantitativa. O levantamento argúi que manter

  16. Do cratons preserve evidence of stagnant lid tectonics?

    Directory of Open Access Journals (Sweden)

    Derek Wyman

    2018-01-01

    Full Text Available Evidence for episodic crustal growth extending back to the Hadean has recently prompted a number of numerically based geodynamic models that incorporate cyclic changes from stagnant lid to mobile lid tectonics. A large part of the geologic record is missing for the times at which several of these cycles are inferred to have taken place. The cratons, however, are likely to retain important clues relating to similar cycles developed in the Mesoarchean and Neoarchean. Widespread acceptance of a form of plate tectonics by ∼3.2 Ga is not at odds with the sporadic occurrence of stagnant lid tectonics after this time. The concept of scale as applied to cratons, mantle plumes and Neoarchean volcanic arcs are likely to provide important constraints on future models of Earth's geodynamic evolution. The Superior Province will provide some of the most concrete evidence in this regard given that its constituent blocks may have been locked into a stagnant lid relatively soon after their formation and then assembled in the next global plate tectonic interval. Perceived complexities associated with inferred mantle plume – volcanic arc associations in the Superior Province and other cratons may be related to an over estimation of plume size. A possible stagnant lid episode between ∼2.9 Ga and ∼2.8 Ga is identified by previously unexplained lapses in volcanism on cratons, including the Kaapvaal, Yilgarn and Superior Province cratons. If real, then mantle dynamics associated with this episode likely eliminated any contemporaneous mantle plume incubation sites, which has important implications for widespread plumes developed at ∼2.7 Ga and favours a shallow mantle source in the transition zone. The Superior Province provides a uniquely preserved local proxy for this global event and could serve as the basis for detailed numerical models in the future.

  17. Early Mesozoic tectonic settings of the northern North China craton

    Science.gov (United States)

    Meng, Qing-Ren; Wei, Hong-Hong; Wu, Guo-Li; Duan, Liang

    2014-01-01

    This paper aims to reconstruct early Mesozoic tectonic settings of the northern North China craton based on investigations of Triassic-Middle Jurassic successions and age determinations of some lithostratigraphic units and dikes cutting tilted early Mesozoic strata. It used to be regarded that the northern North China craton experienced fold-thrust deformations in the Triassic to Early Jurassic based on the occurrences of unconformity beneath Triassic/Lower Jurassic units, synorogenic conglomerate, and Late Triassic thrusting. We revisited early Mesozoic stratigraphy of the Xiabancheng basin in the middle Yanshan belt to restore tectonic environments during that period of time. Detrital zircon data reveal that the Liujiagou and Ermaying Formations are actually of Middle and Late Triassic ages, respectively. Field observations show that the Ermaying and Xingshikou Formations are conformable, making up a sequence from fluvial to alluvial-fan facies. It is also noticeable that Lower-Middle Jurassic Xingshikou through Xiahuayuan succession is typified by fining- and deepening-upward depositional trend and contains abundant volcaniclastic rocks, indicative of continued subsidence of the Xiabancheng basin in a volcanic setting. All the results cast doubts on the long-held view that the first phase of shortening in the northern North China craton happened in the Late Triassic or Early Jurassic. The angular unconformity beneath Upper Jurassic Tiaojishan volcanics registered shortening in the northern North China craton, which plausibly took place around 170 Ma on account of zircon U-Pb ages of two dikes penetrating deformed Middle Triassic-Lower Jurassic strata and ages of Tiaojishan volcanics above the unconformity. Given the widespread occurrence of magmatism, rift basins and metamorphic core complexes during the Triassic and Early Jurassic, it follows that the northern North China craton was more likely under an extensional setting during the early Mesozoic.

  18. Lineamientos de ordenamiento territorial para el manejo y protección del agua subterránea en la cuenca del rio Birrís (Cartago)

    OpenAIRE

    Ramírez, Pablo; Arias, Mario

    2011-01-01

    La cuenca del río Birrís se ubica en la vertiente sureste del volcán Irazú, en ella existen varias unidades hidrogeológicas compuestas por materiales lávicos, laháricos y cenizas, las cuales se comportan como acuíferos y acuitardos agrupados en dos sistemas acuíferos denominados Birrís y Pacayas-Reventado. Estos sistemas acuíferos presentan conexión hidráulica efluente con los drenajes superficiales evidenciado a partir de manantiales que brotan en el contacto y en el frente de flujos de lava...

  19. Availability of water resources in the rio Bermudez micro-basin. Central Region of Costa Rica; Disponibilidad del recurso hidrico en la microcuenca del rio Bermudez. Region Central de Costa Rica

    Energy Technology Data Exchange (ETDEWEB)

    Hernando Echevarria, L.; Orozco Montoya, R.

    2015-07-01

    The Rio Bermudez micro-basin makes up part of the principal hydrological resource area in the Central Region of Costa Rica. For this reason a study was done to determine the availability of hydrological resources in said micro-basin to identify areas with potential water availability problems. A monthly water balance was calculated using land use, geomorphology and climate parameters. From these water balance studies, the amount of available water was calculated and classified into four categories, however, in this micro-basin, only three categories were identified: high, medium and moderate water availability. No areas were identified with low water availability, indicating availability is sufficient; however, there is increasing demand on water resources because over half of the micro-basin area is classified as having moderate water availability. (Author)

  20. Lithospheric thinning in the Eastern Indian Craton: Evidence for lithospheric delamination below the Archean Singhbhum Craton?

    Science.gov (United States)

    Mandal, Prantik

    2017-02-01

    We herein present shear velocity structure extending down to 300 km depth below the Archean Singhbhum-Odisha Craton (SOC) and Proterozoic Chotanagpur granitic-gneissic terrain (CGGT), which has been obtained through the inversion modeling of P-receiver functions. We use three-component broadband recordings of 200 teleseismic earthquakes (30° ≤ ∆ ≤ 90°) from a 15 station seismic network that has been operational in the Eastern Indian shield since February 2013. We obtain the thinnest crust of 35 km overlying a thin lithosphere of 78 km, below the region near south Singhbhum shear zone, which could be attributed to the 1.6 Ga plume activity associated with Dalma volcanic. However, the thickest crust of 47 km overlying a thin lithosphere of 81 km is noticed below the region near the Singhbhum granite of 3.6 Ga. This thinning of lithosphere could be attributed to the delamination of lithospheric root due to the Himalayan orogeny with a shortening rate of 2 cm/year. This delamination model in SOC gets further support from the densification of the lower crust, which could result from repeated episodes of basaltic underplating associated with episodes related to Dalma ( 1.6 Ga) and Rajmahal ( 117 Ma) volcanisms. This led to relatively more mafic, heterogeneous and deformed crustal structure in SOC as well as EGMB (with an average crustal Vs of 4.0 km/s) in comparison to that in CGGT (with an average crustal Vs of 3.9 km/s), as seen through our modeling results. The thickest lithosphere of 100 km is observed in the southwestern SOC as well as northeastern CGGT. We also notice that a sharp and flat Moho in CGGT, which could be attributed to thermal reactivation and large volume melting of the mafic cratonic crust during the late Archean subduction process and associated volcanism episodes. This model gets further support from the estimated 169 km thick lower Vs zone in the upper mantle below CGGT. Our modeling results also support a northward subduction of Archean

  1. Diversidad Florística de la cuenca alta del rio Tambo-Ichuña, Moquegua, Perú

    NARCIS (Netherlands)

    Montesinos, D.B.

    2011-01-01

    La diversidad florística de plantas vasculares es estudiada en la cuenca del río Tambo-Ichuña, la puna y bofedales altoandinos en los distritos de Ichuña, Ubinas y Yunga (3400 – 4700 m de altitud), provincia General Sánchez Cerro, departamento de Moquegua, Perú. La flora vascular de esta región está

  2. Work organization and the health of bank employees Organización del trabajo y salud de empleados del banco Organização do trabalho e saúde de trabalhadores bancários

    Directory of Open Access Journals (Sweden)

    Juliana Lemos Silva

    2012-04-01

    Full Text Available The Brazilian banking sector has undergone an intense restructuring process and taken a leading position in the incorporation of new technologies and organizational innovations. Computerization in the industry, in association with forms of work organization, has resulted in changes that reflect on the workers' health. Based on the theoretical and methodological frameworks of historical and dialectical materialism, this qualitative study investigates the work conditions of bank employees in order to identify the extent to which changes in work organization interfere with these workers' health. Data were collected through interviews held with 11 bank employees. In addition to physical sickening due to occupational diseases directly related to work intensification, the results also show an increased incidence of mental suffering and a feeling of loss of professional identity. Work-related frustration, instability and concerns related to psychological pressure resulting from the need to achieve goals predominated in the reports.La Banca Brasileña pasó por un intenso proceso de reestructuración y ha ocupado posiciones de liderazgo en la incorporación de nuevas tecnologías e innovaciones organizacionales. La informatización de la industria, junto con nuevas maneras de organización del trabajo, dio lugar a cambios que reflejaron en la salud de los trabajadores. Con base en el marco teórico y metodológico del materialismo histórico y dialéctico, este estudio cualitativo tuvo como objetivo investigar las condiciones laborales de los empleados del banco para identificar el grado en que los cambios en la organización del trabajo influyeron en la salud de los trabajadores. Los datos fueron recolectados a través de entrevistas con once empleados del banco. Los resultados mostraron, además de las enfermedades físicas profesionales directamente relacionadas con la intensificación del trabajo, aumento de la incidencia de sufrimiento mental y la

  3. Efeitos da poluição do ar na função respiratória de escolares, Rio de Janeiro, RJ Efectos de la polución del aire en la función respiratoria de escolares, Rio de Janeiro, Sureste de Brasil Effect of air pollution on lung function in schoolchildren in Rio de Janeiro, Brazil

    Directory of Open Access Journals (Sweden)

    Hermano Albuquerque de Castro

    2009-02-01

    Full Text Available OBJETIVO: Analisar a associação entre exposição diária à poluição do ar e função respiratória de escolares. MÉTODOS: Estudo de painel com uma amostra aleatória de 118 escolares (seis a 15 anos de idade da rede pública do Rio de Janeiro (RJ, residentes até 2 km do local do estudo. Dados sobre características das crianças foram obtidos por questionário, incluindo o International Study of Asthma and Allergies in Childhood. Exames diários de pico de fluxo foram realizados para medir a função respiratória. Dados diários dos níveis de PM10, SO2, O3, NO2 e CO, temperatura e umidade foram fornecidos por um monitor móvel. As medidas repetidas de função respiratória foram associadas aos níveis dos poluentes por meio de modelo multinível ajustado por tendência temporal, temperatura, umidade do ar, exposição domiciliar ao fumo, ser asmático, altura, sexo, peso e idade das crianças. RESULTADOS: O pico de fluxo expiratório médio foi 243,5 l/m (dp=58,9. A menor média do pico de fluxo expiratório foi 124 l/m e a maior 450 l/m. Para o aumento de 10 µg/m³ de PM10 houve uma diminuição de 0,34 l/min na média do pico de fluxo no terceiro dia. Para o aumento de 10 µg/m³ de NO2 houve uma diminuição entre 0,23 l/min a 0,28 l/min na média do pico de fluxo após a exposição. Os efeitos do CO e do SO2 no pico de fluxo dos escolares não foram estatisticamente significativos. O O3 apresentou um resultado protetor: o aumento de 10 µg/m³ de O3 estaria associado, um dia depois da exposição, a aumento de 0,2 l/min na média da função respiratória. CONCLUSÕES: Mesmo dentro de níveis aceitáveis na maior parte do período, a poluição atmosférica, principalmente o PM10 e o NO2, esteve associada à diminuição da função respiratória de crianças residentes no Rio de Janeiro.OBJETIVO: Analizar la asociación entre exposición diaria a la polución del aire y función respiratoria de escolares. MÉTODOS: Estudio de

  4. Las redes de drenaje de los rios Alberche y Guadarrama como indicadores estructurales del Sistema Central Espanol

    Directory of Open Access Journals (Sweden)

    Martín Escorza, C.

    2003-08-01

    Full Text Available The network of the Alberche and Guadarrama rivers, obtained by a semicuantitative method, shows that on the granitic and metamorphic rocks of the Spanish Central System exist circular alignments, until now detected by analysis of satellite image. Such alignments are located in the sub-geological system of the Sierra de Guadarrama, and they coexist with to already known rectilinear alignments. In the sub-westem system, Sierra de Gredos, are detected rectilinear alignments. The circular structures of Sierra de Guadarrarna would have a relationship to geological processes still unknown after the Hercynian Orogeny but before of the Oligocene.Utilizando una metodología semicuantitativa, las redes de drenaje de los ríos Alberche y Guadarrama ponen de manifiesto que existen alineaciones circulares sobre las rocas graníticas y metamórficas de la Cordillera Central, cuya presencia hasta ahora se había detectado por análisis de imagen de satélite. Tales alineaciones se sitúan en el subsistema geológico de la Sierra del Guadarrama, en donde coexisten con alineaciones rectas ya conocidas. En el subsistema occidental, la Sierra de Gredos, se detectan alineaciones rectas. Las estructuras circulares de la Sierra de Guadarrama tendrían su origen en relación con procesos geodinámicos todavía desconocidos, ocurridos con posterioridad a la Orogenia Hercínica, pero antes del Oligoceno.

  5. Valorização do magistério ou darwinismo profissional? ¿Valoración del magisterio o darwinismo profesional? Teaching valorization or professional darwinism?

    Directory of Open Access Journals (Sweden)

    Maria Angélica Pedra Minhoto

    2011-03-01

    Full Text Available A insatisfação em relação ao desempenho da educação básica é grande, e as avaliações de monitoramento persistem indicando lacunas nos sistemas de ensino. Em resposta, a Secretaria de Educação de São Paulo propôs medidas de incentivos financeiros ao magistério paulista. Além do bônus por desempenho, foi enviado à Assembléia Legislativa um Projeto de Lei Complementar (PLC que institui o sistema de promoção por mérito. Este artigo discute os limites do princípio de eficiência do PLC, tendo em vista assentar-se na correlação entre aumento da remuneração e melhoria de desempenho.Analisa também os limites do conceito de qualidade educacional atrelado à lógica de mercado. São apresentados preceitos e incongruências do PLC, resultados de trabalhos internacionais que testaram a eficiência de políticas de remuneração por mérito e, finalmente, são tecidas considerações em relação ao PLC, tendo em vista a experiência internacional.Existe mucha insatisfacción con respecto al desempeño de la educación básica en Brasil, y, por otro lado, las evaluaciones de monitoreo continúan señalando vacíos en los sistemas de educación. Como respuesta, la Dirección General de Escuelas del Estado de San Pablo ha propuesto medidas para apoyar financieramente a sus maestros. Además de las primas por rendimiento, ya en vigor, se envió a la Asamblea Legislativa un Proyecto de Ley Complementaria (PLC que establece un sistema de promoción por méritos a la carrera docente. Este artículo aborda los límites del principio de eficiencia del PLC, basado en la correlación entre el aumento de las remuneraciones y la mejora del rendimiento, también aborda los límites del concepto de calidad de la educación asociado a la lógica del mercado. Se presentan los preceptos y las discrepancias del PLC, resultados de estudios internacionales sobre la eficacia de las políticas de remuneración por mérito y, finalmente, se hacen

  6. Cuando la arqueología llega al rescate del turismo: el caso de Bocana del Rio Copalita, Huatulco, Oaxaca, México

    Directory of Open Access Journals (Sweden)

    Catherine Marie Heau Lambert

    2015-01-01

    Full Text Available Este artículo trata de la difícil relación entre turismo y patrimonio material e inmaterial. El turismo en México enfrenta una fuerte competencia que le obliga a ofrecer un plus cultural para seguir competitivo a nivel internacional y poder así personalizar las estadías vacacionales. Se ofrece sol, playa y exotismo cultural. La cultura, por lo tanto, se vuelve mercancía. ¿Cómo conciliar el respeto por la cultura y la necesidad económica? ¿Cómo lograr un equilibrio razonable entre la cultura identitaria y la cultura mercancía sin que una se valorice en forma excluyente en detrimento de la otra? Exponemos aquí el caso del Parque eco-arqueológico de Bocana del Río, Huatulco (Oaxaca-México a cargo de dos entidades federales diferentes: el Fondo Nacional para el Turismo y el Instituto Nacional de Antropología e Historia.

  7. Diachronic aspects of land planning of the Alberche river basin; Aspectos diacrnicos de la ordenacion del territorio de la cuenca del rio Alberche

    Energy Technology Data Exchange (ETDEWEB)

    Sotelo Perez, M.

    2012-07-01

    The planning scope of this study is a section of the edge of the metropolitan area southwest of Madrid, comprising the townships of Alamo, Navalcarnero, Villamanta and Sevilla la Nueva, which falls in the region of the Rio Alberche. The characteristics of the natural environment, the peculiar morphology of population settlements, together with the unique organization and economic dynamics, increased immigration in recent times and the seasonal residence, has resulted in a pattern of relationships and flows that interrelate to municipalities each other and manifested in population movements daily for work and labor, and important phenomena of outsourcing, which gives the most singular and main feature, along with the role of backbone of the region of Alberche river basin. Through the case study, questioning the methodology, we approach the study and research issues related to municipalities that are enrolled in spaces within the forms of protection (Regional Park of the middle river Guadarrama) and others not. All in all, after the previous analysis, we analyze the problem. (Author)

  8. ANÁLISIS SOCIOECONÓMICO DE LA CUENCA DEL RIO CUALE, JALISCO, MÉXICO: UNA CONTRIBUCIÓN PARA LA DECLARACIÓN DEL ÁREA NATURAL PROTEGIDA RESERVA DE LA BIOSFERA EL CUALE

    Directory of Open Access Journals (Sweden)

    Jorge Téllez López

    2013-06-01

    Full Text Available Durante los meses de enero a mayo de 2013, a través de la metodología propuesta por Alciaturi (2009; se realizó el análisis de los factores socioeconómicos involucrados en la cuenca del rio Cuale, Jalisco, México. Los resultados incluyeron aspectos relacionados con la dinámica demográfica, grado de marginación, nivel educativo, población económicamente activa, principales actividades económicas, comunidades rurales, descripción socioeconómica, potenciales de los recursos naturales, usos y aprovechamientos actuales; así como la situación jurídica de la tenencia de la tierra. El objetivo de esta investigación es conocer cómo estos factores inciden sobre los recursos naturales de la cuenca. Con la finalidad de utilizar esta información para establecer la declaratoria del Área Natural Protegida Reserva de la Biosfera El Cuale, que es una herramienta que puede ayudar a asegurar la conservación de esta zona. Por lo tanto, se han incluido elementos de análisis social, económico y ambiental, puesto que estos factores han resultado determinantes en los procesos que inciden en la deforestación y cambio de uso de suelo.

  9. The 1590-1520 Ma Cachoeirinha magmatic arc and its tectonic implications for the Mesoproterozoic SW Amazonian craton crustal evolution

    Directory of Open Access Journals (Sweden)

    Ruiz Amarildo S.

    2004-01-01

    Full Text Available Isotopic and chemical data of rocks from the Cachoeirinha suite provide new insights on the Proterozoic evolution of the Rio Negro/Juruena Province in SW Amazonian craton. Six U-Pb and Sm-Nd analyses in granitoid rocks of the Cachoeirinha suite yielded ages of 1587-1522 Ma and T DM model ages of 1.88-1.75 Ga (EpsilonNd values of -0.8 to +1.0. In addition, three post-tectonic plutonic rocks yielded U-Pb ages from 1485-1389 Ma (T DM of 1.77-1.74 Ga and EpsilonNd values from -1.3 to +1.7. Variations in major and trace elements of the Cachoeirinha suite rocks indicate fractional crystallization process and magmatic arc geologic setting. These results suggest the following interpretations: (1 The interval of 1590-1520 Ma represents an important magmatic activity in SW Amazonian craton. (2 T DM and arc-related chemical affinity supportthe hypothesis that the rocks are genetically associated with an east-dipping subduction zone under the older (1.79-1.74 Ga continental margin. (3 The 1590-1520 Ma age of intrusive rocks adjacent to an older crust represents similar geological framework along the southern margin of Baltica, corroborating the hypothesis of tectonic relationship at that time.

  10. América Latina: política y elecciones Del bicentenário (2009-2010

    Directory of Open Access Journals (Sweden)

    Amelia Isabel Alva

    2011-12-01

    Full Text Available http://dx.doi.org/10.5007/1806-5023.2011v8n1p96 El libro reúne el trabajo de diversos investigadores vinculados principalmente al Instituto de Iberoamérica y al Área de Ciencia Política de la Universidad de Salamanca, también se cuenta con la participación de profesores de la Universidad Carlos III, de la Complutense de Madrid, de la Universidad de Campinas, entre otros. La obra focaliza los procesos electorales de catorce países en el marco de la conmemoración del bicentenario de las independencias latinoamericanas acaecidos en el bienio 2009-2010.

  11. The Asamblea del Año XIII in the Rio de la Plata: Eternal Laurels to End the Revolution

    Directory of Open Access Journals (Sweden)

    Esteban Buch

    2016-09-01

    Full Text Available The Asamblea del año XIII, the 1813 Constitutional Assembly in the Río de la Plata, represents at its best revolutionary velocity, with its allegro rhythm towards wider liberties and a more perfect equality, towards an independence of the nation that, without being officially declared, inspires many of its gestures, like the creation of Argentina’s national anthem. A contemporary observer fond of anachronisms might find in it a confirmation that movement is an essential element of democracy. Yet, this dynamic perception should be balanced by reminding that the Assembly’s main project is not to accelerate the revolution, but to terminate it. “Close the period of the revolution, open the epoch of peace and freedom”, says its inaugural declaration. This paper focuses on the tension between these two conceptions of historical temporality.

  12. Nd-Sr Isotopic Geochemistry and U-Pb Geochronology of the Fé Granitic Gneiss and Lajedo Granodiorite: Implications for Paleoproterozoic Evolution of the Mineiro Belt, Southern São Francisco Craton, Brazil

    OpenAIRE

    Wilson Teixeira; Ciro Alexandre Ávila; Luciana Cabral Nunes

    2008-01-01

    The Fé granitic gneiss and Lajedo granodiorite belong to a voluminous felsic-mafic plutonism, tectonically linked toPaleoproterozoic magmatic evolution of the Mineiro Belt, southern portion of the São Francisco Craton, central-easternBrazil. The Fé pluton is located north of the Lenheiros shear zone and is intrusive with respect to the Rio das Mortesgreenstone belt and pyroxenite - gabbroic bodies, as indicated by xenoliths of gneiss and amphibolite, in the first case, andpyroxenite in the la...

  13. Habilidades del cuidador primario de mujeres mastectomizadas Habilidades do cuidador primário de mulheres mastectomizadas Mastectomized women primary caregiver’s abilities

    Directory of Open Access Journals (Sweden)

    Rosa María Ostiguín-Meléndez

    2012-03-01

    Full Text Available Objetivo. Describir las habilidades del cuidador primario (CP en términos de conocimiento, valor y paciencia del de mujeres mastectomizadas. Metodología. En 2010 se llevó a cabo un estudio descriptivo de tipo transversal en una muestra de 100 cuidadores primarios del Instituto Nacional de Cancerología de la Ciudad de México. Para la medición de la habilidad se utilizó el instrumento "Inventario de habilidad de cuidado", que tiene tres subescalas: conocimiento, valor y paciencia. Se estimaron las correlaciones entre la sumatoria de los términos, comparándolas con las variables sociodemográficas. Resultados. El 41% de los CP fueron hombres, casados en un 77%; predominantemente fueron hijos (41% o esposos (32% del paciente. La edad mediana del CP, fue 43 años. En las habilidades del cuidador se encontró: alta puntuación para las dimensiones de conocimiento y paciencia, y baja para la de valor. Se identificó una correlación significativa entre las dimensiones de conocimiento y paciencia, mientras que la correlación de valor y paciencia fue menor. Conclusión. Las habilidades más importantes con que debe contar el CP son el conocimiento y la paciencia; el valor no mostró tal relevancia.Objetivo. Descrever as habilidades no cuidado em termos de conhecimento, valor e paciência do cuidador primário (CEP de mulheres mastectomizadas. Metodologia. Em 2010 se levou a cabo um estudo descritivo de tipo transversal numa mostra de 100 cuidadores primários do Instituto Nacional de Cancerologia da Cidade do México. Para a medição da habilidade se utilizou o instrumento "Inventário de habilidade de cuidado", que tem três sub-escalas: conhecimento, valor e paciência. Estimaram-se as correlações entre a sumatória dos termos, comparando-as com as variáveis sócio-demográficas. Resultados. O 41% dos CEP foram homens, casados num 77%; predominantemente foram filhos (41% ou esposos (32% do paciente, e a maioria tinham um trabalho

  14. 3D Numerical Model of Continental Breakup via Plume Lithosphere Interaction Near Cratonic Blocks: Implications for the Tanzanian Craton

    Science.gov (United States)

    Koptev, A.; Calais, E.; Burov, E. B.; Leroy, S. D.; Gerya, T.

    2014-12-01

    Although many continental rift basins and their successfully rifted counterparts at passive continental margins are magmatic, some are not. This dichotomy prompted end-member views of the mechanism driving continental rifting, deep-seated and mantle plume-driven for some, owing to shallow lithospheric stretching for others. In that regard, the East African Rift (EAR), the 3000 km-long divergent boundary between the Nubian and Somalian plates, provides a unique setting with the juxtaposition of the eastern, magma-rich, and western, magma-poor, branches on either sides of the 250-km thick Tanzanian craton. Here we implement high-resolution rheologically realistic 3D numerical model of plume-lithosphere interactions in extensional far-field settings to explain this contrasted behaviour in a unified framework starting from simple, symmetrical initial conditions with an isolated mantle plume rising beneath a craton in an east-west tensional far field stress. The upwelling mantle plume is deflected by the cratonic keel and preferentially channelled along one of its sides. This leads to the coeval development of a magma-rich branch above the plume head and a magma-poor one along the opposite side of the craton, the formation of a rotating microplate between the two rift branches, and the feeding of melt to both branches form a single mantle source. The model bears strong similarities with the evolution of the eastern and western branches of the central EAR and the geodetically observed rotation of the Victoria microplate. This result reconciles the passive (plume-activated) versus active (far-field tectonic stresses) rift models as our experiments shows both processes in action and demonstrate the possibility of developing both magmatic and amagmatic rifts in identical geotectonic environments.

  15. Evaluation of the potential expansiveness of soils in the Hermanos Cruz neighbourhood, Pinar del Rio, Cuba: a contribution to urban planning

    Energy Technology Data Exchange (ETDEWEB)

    Chinthaka-Ganepola, G.A.; Mohammed, A. S.; Ordaz Hernandez, A.; Estevez Cruz, E.; Hernandez Santana, J.R.

    2016-07-01

    Expansive soils can be categorized as one of the geohazards observed in the urban environment, representing a silent hazard to buildings and infrastructure. To evaluate this problematic soil it is necessary to know some of its geotechnical properties. Generally, the average values of soil properties are used in the methods which characterize the geological formation and the lithological group, which causes a great degree of uncertainty. To overcome this problem, this study proposes a procedure for estimating and modelling the principle soil properties that have an impact on expansive soils. The selected case study is located in the Hermanos Cruz neighbourhood in the city of Pinar del Rio in Cuba. The investigation was organized into the following stages: primary assessment of the potential expansiveness of the soils, modelling of the soil properties utilizing 3D geostatistical methods and finally the cartographic representation of the potential Expansiveness of soils on a Geographic Information System (GIS) platform at different depth zones which are of importance in the construction of shallow foundations of engineering works. The application of this methodology in the Hermanos Cruz neighbourhood revealed that its soils possess a potential expansiveness of low to medium, apart from some isolated zones which show a potential expansiveness of medium to high. (Author)

  16. Proyecto de aula Construcción de la alfabetización científica a partir del trabajo con cuestiones socio científicas (CSC. Problemática de la contaminación del rio Bogotá

    Directory of Open Access Journals (Sweden)

    Andres Mauricio Molano

    2015-09-01

    CSC trabajada es el tratamiento de aguas negras de una vertiente del rio Bogotá ubicado aledaño al colegio Alcalá ubicado al sur de Bogotá. Palabras clave CSC, alfabetización científica, secuencia didáctica, enseñanza de las ciencias.

  17. A percepção ambiental entre os habitantes da região noroeste do estado do Rio de Janeiro La percepción del medio ambiente entre los habitantes de la región noroeste de Rio de Janeiro Environmental perception among inhabitants of northwest region of the State of Rio de Janeiro

    Directory of Open Access Journals (Sweden)

    Livia Melo Villar

    2008-09-01

    Full Text Available Foi desenvolvido um estudo para avaliar a percepção ambiental de indivíduos residentes do Município de Itaperuna, localizado na região Noroeste do Rio de Janeiro, Brasil. Foram selecionados 243 indivíduos, entre os meses de julho a outubro de 2005, que responderam sobre questões que abordavam a relação indivíduo/ambiente; ações individuais em favor da área ambiental; preocupação com o impacto ambiental e consumo; hábitos pessoais e ambiente. Com base na análise das respostas dos indivíduos, foi observada maior percepção ambiental em indivíduos mais velhos em relação a crianças e jovens. Este resultado demonstra que os programas de educação ambiental nesta região devem ser voltados para crianças e adolescentes, para que os mesmos se tornem adultos conscientes, uma vez que os indivíduos respondentes apresentaram grande interesse pelos temas ambientais e disposição para participar de campanhas e ações de recuperação ambiental.Se desarrolló una investigación para evaluar la percepción ambiental de las personas que viven en la ciudad Itaperuna, situada en la región noroeste del Rio de Janeiro, Brasil. Se entrevistaron 243 personas entre julio y octubre de 2005 sobre cuestiones acerca de la relación de la persona sobre el medio ambiente; las acciones a favor de la educación ambiental; las acciones a favor del medio ambiente de la zona; beligerantes acerca del impacto ambiental y de consumo, hábitos personales y el medio ambiente. Cuando las respuestas de esta población se compararon, se observó una gran percepción ambiental en el anciano de los individuos en relación con los niños y adultos jóvenes. Este resultado demostra que programas de educación ambiental en esta región se deben enfocar para los niños y los adolescentes, para que estos se conviertan en adultos más consciente, ya que las personas entrevistadas presentaron gran interés sobre temas de medio ambiente y disposición a participar en

  18. Mudando o foco: um estudo exploratório sobre uso de drogas e violência no trabalho entre mulheres das classes populares da cidade do Rio de Janeiro, Brasil Cambiando el foco: un estudio exploratorio acerca del uso de drogas y violência en el trabalho de mujeres de las classes populares de Rio de Janeiro, Brasil Changing the focus: an exploratory study of drug use and worplace violence among women of popular classes in Rio de Janeiro, Brazil

    Directory of Open Access Journals (Sweden)

    Helena Maria Scherlowski Leal David

    2005-12-01

    Full Text Available Este é um estudo exploratório para o mapeamento de fatores envolvidos na relação entre uso de drogas lícitas e ilícitas e violência no trabalho, em um grupo de mulheres das classes populares da cidade do Rio de Janeiro. Para este estudo foi utilizada uma abordagem quantitativa descritiva e analítica, e também abordagem qualitativa a partir de entrevistas aprofundadas com mulheres que sofrem ou haviam sofrido situações de violência no trabalho, utilizando a metodologia do Discurso do Sujeito Coletivo. Os resultados evidenciam situações sócio-demográficas e de trabalho que podem ser consideradas como possíveis fatores de risco para o consumo de drogas e violência no trabalho. A análise qualitativa mostrou a forma como este grupo de mulheres vê o fenômeno do uso de drogas e da violência no trabalho, ampliando a compreensão sobre estas questões e fornecendo subsídios conceituais e metodológicos para estudos adicionais sobre o tema.La finalidad de este estudio exploratorio fue conocer los factores relacionados con el uso de drogas lícitas e ilícitas y la violencia en el trabajo en un grupo de mujeres de clases populares en la ciudad de Rio de Janeiro. Para este estudio se utilizó una aproximación cuantitativa descriptiva y analítica, además de una aproximación cualitativa a partir de entrevistas en profundidad con mujeres que sufren o habían sufrido situaciones de violencia en el trabajo. Se utilizó la metodología de análisis del discurso del sujeto colectivo. Los resultados evidencian situaciones sociodemográficas y de trabajo que pueden ser consideradas como posibles factores de riesgo para el consumo de drogas y violencia en el trabajo. El análisis cualitativo muestra como este grupo de mujeres percibe el fenómeno del uso de drogas y de violencia en el trabajo, ampliando la comprensión sobre estas cuestiones y dando aportes conceptuales y metodológicos para estudios adicionales sobre el tema

  19. O delírio à luz da teoria dos atos de fala Delusion according to the theory of speech acts

    Directory of Open Access Journals (Sweden)

    Francisco Martins

    2000-01-01

    Full Text Available Este trabalho apresenta uma possível solução para problemas suscitados pelo entendimento do fenômeno delirante segundo o modelo de uma teoria restrita da referência absoluta, na qual as palavras e, consequentemente, os juízos, corresponderiam às coisas como um alfabeto lógico. Na concepção pragmática aqui adotada, a linguagem é tomada por um jogo regido por regras em que é mais importante a eficácia da cooperação discursiva que o significado ideal das expressões. A teoria dos atos de fala se mostra a mais bem acabada solução da pragmática filosófica nesse sentido e é usada como princípio metodológico na análise dos excertos de fala de pacientes delirantes que constituem os corpus discursivos. O delírio termina por se mostrar como uma solução inédita para questões cruciais da história do indivíduo psicótico.This paper presents a possible solution to the problems aroused by the understanding of the delusional phenomenon according to the model of a restricted theory of absolute reference in which the words and, consequently, the judgements, correspond to the things as a logical alphabet. In the pragmatic conception adopted here, language is taken as a game guided by rules in which effective discursive cooperation is more important than the ideal meaning of expressions. In this sense, the theory of acts of speech seems to be the best solution offered by the philosophical pragmatics and it is used as a methodological principle on the analysis of speech excerpts of delusional patients. Delusion shows itself as an original solution to decisive questions in the history of a psychotic person.

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

    Energy Technology Data Exchange (ETDEWEB)

    Geraldes, Mauro Cesar; Teixeira, Wilson [Sao Paulo Univ., SP (Brazil). Inst. de Geociencias; Schmus, William Randall van [Kansas Univ., Lawrence, KS (United States). Dept. of Geology

    2000-03-01

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

  1. Rio+20

    Directory of Open Access Journals (Sweden)

    Robert Horn

    2012-10-01

    Full Text Available This reflection on Rio+20 examines many of the major social institutions and how they fulfilled their functions during the United Nations Conference on Sustainable Development at Rio. The institutions are: 1. Nation-states as a collective. 2. Individual nation-states. 3. Vanguard institutions (some NGOs. 4. Action and convening NGOs. 5. Global media. 6. Governments of nation-states acting domestically 7. Individual governments in bilateral and multilateral situations. 8. Similar institutions in different countries acting together. 9. Businesses. 10. Global science. Each is considered within the assumptions of what the society expects them to deliver (in general, what is possible for them to deliver, and what they did deliver at Rio. In approaching Rio+20, our account differs considerably from much of the reportage by the mainstream media.

  2. Inquérito do preservativo em ribeirinhos do Rio Acre: porte, acondicionamento, uso e risco para infecção pelas DSTs Inquerito del preservativo en la bacia fluvial del Rio Acre: porte, guarda, uso y el riesgo de infección por las EST Inquiry of the preservative in the basin of Rio Acre: carriage, package, use and the infection risk for DST

    Directory of Open Access Journals (Sweden)

    Andréa Ramos da Silva

    2005-02-01

    Full Text Available Estudo do tipo exploratório - descritivo, desenvolvido junto a 168 ribeirinhos do Rio Acre - Brasil, para investigar o uso do preservativo e o risco por doenças sexualmente transmissíveis. Fez-se uso de um formulário, com participação espontânea e garantia do anonimato. Como resultado destaca-se os 64,3% do gênero masculino, 75,0% casados/juntados, 57,1% possuíam o primeiro grau incompleto e 31,0% eram analfabetos. Na época 78,0% não traziam preservativo consigo ao vir a cidade e apenas 6,0% saíram a procura por atividade sexual; 62,0% já haviam usado o preservativo masculino, com 67,2% de aceitação e 77,8% o guardavam no bolso traseiro da calça, com perigo de maceração e risco de infecção e gravidez indesejada; 8,9% haviam tido doença venérea, sendo 80,0% para a gonorréia. Destes 46,7% trataram com farmacêutico e médico respectivamente. Assim, 89,3% consideraram a s campanhas de prevenção como ótima/boa.Estudio del tipo exploratorio - descriptivo, desarrollado con 168 riverine cercano de Rio Acre - Brasil, para investigar el uso del preservativo y el riesgo para las enfermedades sexualmente trasmisibles. Para la colecta de datos se há utilizado un fomulario, con participación espontánea y garantizó de la anonimidad. Como posiciones del resultado fuera los 64,3% del género masculino, 75,0% casado / unió, 57,1% poseyeron el primer grado incompleto y 31,0% eran analfabetos. En ese momento 78,0% no trajeron preservativo consigo al venir a la ciudad y 6,0% sólo salió a la búsqueda para la actividad sexual; 62,0% ya habían usado el preservativo masculino, con 67,2% de aceptación y 77,8% lo guardó en el bolsillo de la parte de atrás de los pantalones, con peligro de dañar y riesgo de infección y embarazo no deseado; 8,9% habían tenido enfermedad venérea y habían sido 80,0% para la gonorrea. De estos, 46,7% negociaron respectivamente con farmacéutico y doctor. Así, 89,3% consideraron las campañas de la

  3. Excesso de peso e o risco cardiovascular em jovens seguidos por 17 anos: estudo do Rio de Janeiro El exceso de peso y el riesgo cardiovascular en jóvenes seguidos durante 17 años: estudio del Rio de Janeiro Overweight and cardiovascular risk among young adults followed-up for 17 years: the Rio de Janeiro study, Brazil

    Directory of Open Access Journals (Sweden)

    Flávia Lopes Fonseca

    2010-02-01

    Full Text Available FUNDAMENTO: A adoção de medidas de prevenção primária em jovens é de potencial impacto favorável no cenário das doenças cardiovasculares. OBJETIVO: Avaliar a pressão arterial (PA e variáveis de risco cardiovascular em jovens estratificados pelo comportamento do índice de massa corporal (IMC obtido ao longo de 17 anos, desde a infância/adolescência (I/A. MÉTODOS: Três avaliações foram feitas em 115 indivíduos pertencentes à coorte do Estudo do Rio de Janeiro: A1:12,97 ± 1,48 anos; A2:21,90 ± 1,71 anos; A3:30,65 ± 2,00 anos e divididos em três grupos segundo o IMC nas três avaliações: Grupo N (IMC sempre normal; n=46, Grupo L (IMC variável; n=49 e Grupo S/O (IMC sempre aumentado; n=20. Em A1, A2 e A3 foram obtidos PA e IMC. Em A2 e A3, dosados glicose (G e perfil lipídico. Ainda em A2, dosada insulina (INS e calculado HOMA-IR. Em A3 acrescentou-se medida da circunferência abdominal (CA, relação abdômen/quadril (RAQ e percentual de gordura corporal (%GC. RESULTADOS: 1 Grupo S/O apresentou maiores médias de PA aumentada (pFUNDAMENTO: La adopción de medidas de prevención primaria en jóvenes es de potencial impacto favorable en el escenario de las enfermedades cardiovasculares. OBJETIVO: Evaluar la presión arterial (PA y variables de riesgo cardiovascular en jóvenes estratificados por el comportamiento del índice de masa corporal (IMC obtenido a lo largo de 17 años, desde la infancia/adolescencia (I/A. MÉTODOS: Tres evaluaciones se llevaron a cabo en 115 individuos pertenecientes a la cohorte del Estudio del Rio de Janeiro: A1:12,97 ± 1,48 años; A2:21,90 ± 1,71 años; A3:30,65 ± 2,00 años y divididos en tres grupos segundo el IMC en las tres evaluaciones: Grupo N (IMC siempre normal; n=46, Grupo L (IMC variable; n=49 y Grupo S/O (IMC siempre aumentado; n=20. En A1, A2 y A3 se obtuvieron PA e IMC. En A2 y A3, dosificados glucosa (G y perfil lipídico. Todavía en A2, dosificada la insulina (INS y calculado

  4. Temperature and compositional variations in the Australian cratons

    Science.gov (United States)

    Tesauro, Magdala; Kaban, Mikhail; Aitken, Alan; Kennett, Brian

    2017-04-01

    The upper mantle of the Australian continent has been deeply investigated in the last two decades using a variety of geophysical methods. The resulting models have revealed the robust large-scale features of the continental lithosphere of Australia, i.e., faster seismic velocities in the Archean and Proterozoic cratons in the West, North and South Australia and slower velocities in the eastern Phanerozoic margin. Furthermore, it has been identified a layered velocity structure in central Australia. The zone of low seismic velocities in the uppermost mantle is underlain by the high-velocity zone. This layered structure may have a thermal origin, due to a redistribution of high heat producing elements within the crust or reflect compositional changes, e.g. a presence of amphibole. To discern temperature and compositional variations in the Australian upper mantle, we apply an iterative technique, which employs a joint inversion of the seismic tomography and gravity data. This technique consists in removing the effect of the crust from the observed gravity field and topography. In the second step, the residual mantle gravity field and residual topography are inverted to obtain a 3-D density model of the upper mantle. The inversion technique accounts for the notion that these fields are controlled by the same factors but in a different way (e.g., depending on depth and horizontal dimension of the heterogeneity.) This enables us to locate the position of principal density anomalies in the upper mantle. Afterwards, the thermal contribution to the density structure is estimated by inverting the seismic tomography model AusREM (http://rses.anu.edu.au/seismology/AuSREM/index.php). Based on the residual fields, we construct an initial compositional model of the upper mantle. In particular, a negative residual density anomaly is interpreted as the material having a larger Mg# and depleted in garnet and CPX Then, the initial thermal model is re-estimated with the new

  5. Geophysical imaging of metacratonizaton in the northern edge of the Congo craton in Cameroon

    Science.gov (United States)

    Goussi Ngalamo, Jeannot F.; Bisso, D.; Abdelsalam, Mohamed G.; Atekwana, Estella A.; Katumwehe, Andrew B.; Ekodeck, G. E.

    2017-05-01

    We used the World Gravity Map (WGM 2012) data to investigate the Archean Congo craton and the Oubanguides orogenic belt in Cameroon. The Oubanguides orogenic belt constitutes, from northwest to southeast, the Neoproterozoic West Cameroon domain, the Paleoproterozoic-Neoproterozoic Adamawa-Yade domain, and the dominantly Neoproterozoic Yaoundé domain (the crustal expression of the suture zone between the Congo craton and the orogenic terranes). We analyzed the WGM 2012 data to identify different gravity anomalies. We also applied the two-dimensional (2D) radially-averaged power spectral analysis to the WGM 2012 data to estimate the Moho depth. Additionally, we developed a 2D forward gravity model along a Nsbnd S profile to image the lithospheric structure of the Precambrian entities. We found that: (1) the Congo craton, the Yaoundé domain, the southeastern part of the West Cameroon domain, and the northern part of the Adamawa-Yade domain are characterized by low gravity anomaly. (2) the southern part of the Adamawa-Yade domain is marked by a pronounced E-W trending high gravity anomaly. (3) the crust is thicker beneath the Congo craton, the Yaoundé domain and the southern part of the Adamawa-Yade domain. (4) the presence of a denser lower crust material beneath the southern part of the Adamawa-Yade domain. We propose that this denser crustal material is an under-thrusted portion of the Congo craton that has been densified through metacratonization processes that accompanied collision between the craton and the orogenic terranes. This is in good agreement with geological and geochemical observations indicating that the northern edge of the Congo craton and the Adamawa-Yade domain had undergone metacratonization during the Neoproterozoic. Our suggestion is also in good agreement with observations which show that the margins of many cratons worldwide have been decratonized due to subduction processes. Our work highlights the importance of potential field geophysical

  6. The influence of abiotic factors present in the Rio de la Plata over the chromium genotoxicity; Influencia de factores abioticos presentes en el rio de la Plata sobre la genotoxicidad del cromo

    Energy Technology Data Exchange (ETDEWEB)

    Lopez, L.C.; Moretton, J. [Facultad de Farmacia y Bioquimica. Universidad de Buenos Aires. Argentina (Argentina)

    1997-12-31

    The alterations suffered by the well-known environmental genotoxic agent, Cr(V I), were studied. Cr(V I) salts were dissolved in water effluent river receptors waters such as from the Rio de la Plata. The influence of abiotic factors present in this kind of water was evaluated using the Rec. assay in Bacillus subtilis. The results detected a soluble fraction that potentiated Cr(V I) genotoxicity. This substance (or group of substances) is sensible to sterilization by heat and UV radiation, and its activity seems to decrease with particulate matter. Its genotoxicity was not affected by high concentrations of particulate matter in the Rio de la Plata water. In samples where chromium salts were added to raw river water, abiotic interference due to sterilization process occurred. A decrease in genotoxicity was found after filtration through inorganic filters (0.22 {mu} m) and an increase was noticed after exposure to UV radiation. (Author)

  7. Lateral heterogeneity and vertical stratification of cratonic lithospheric keels: examples from Europe, Siberia, and North America

    DEFF Research Database (Denmark)

    Artemieva, Irina; Cherepanova, Yulia; Herceg, Matija

    of the Precambrian lithosphere based on surface heat flow data, (ii) non-thermal part of upper mantle seismic velocity heterogeneity based on a joint analysis of thermal and seismic tomography data, and (iii) lithosphere density heterogeneity as constrained by free-board and satellite gravity data. The latter...... is compared with xenolith data from the Siberian kimberlite provinces. An analysis of surface heat flow indicates that many Precambrian cratons (particularly the cratons of Laurasia) are characterized by extremely low surface heat flow (... compilation of cratonic xenolith P-T arrays, which are usually consistent with surface heat flow of around 40 mW/m2. In regions with very low heat flow, the depth extent of the lithospheric keels locally may reach the depth of 300-350 km. In contrast, the lithosphere of the cratons which were a part...

  8. Facilidades de acesso reveladas pelos usuários do Sistema Único de Saúde Facilidades de acceso reveladas por los usuários del Sistema ùnico de Salud Ease of access revealed by users of the Single Health System

    Directory of Open Access Journals (Sweden)

    Ana Paula Munhen de Pontes

    2010-08-01

    Full Text Available Este trabalho objetivou analisar a percepção dos usuários sobre as facilidades de acesso às ações e serviços do SUS. Estudo qualitativo, realizado com 24 usuários do SUS em um hospital federal na cidade do Rio de Janeiro. Na coleta de dados utilizou-se a técnica de entrevista semi-estruturada; a análise foi realizada através da técnica de análise de conteúdo temática. Os sujeitos reconhecem o acesso a diversos serviços do SUS, assim como os fatores associados a esse acesso, como o processo de referência, a sorte e a crença em Deus. Foi possível verificar a existência de uma atitude positiva acerca do sistema de saúde, bem como a identificação de um conjunto dos seus princípios.Este estudio tuvo como objetivo examinar las percepciones de los usuarios sobre la facilidad de acceso a las acciones y servicios del Sistema Unico de Salud (SUS. Estudio cualitativo realizado con 24 usuarios del SUS en un hospital federal en Río de Janeiro. Los datos fueron colectados por medio de la técnica de entrevista semi-estructurada y analizados a partir de los análisis de contenido. Los sujetos reconocen el acceso a diferentes servicios del SUS, así como los factores asociados con dicho acceso, como el proceso de referencia, la suerte y la creencia en Dios. Fue posible verificar la existencia de una actitud positiva sobre el sistema de salud y la identificación de un conjunto de sus principios.This study aimed to examine the perceptions of users about the ease of access to actions and services of the Single Health System (SHS. Qualitative study conducted with 24 users of SHS in a federal hospital in Rio de Janeiro. In collecting data was used the technique of semi-structured, the analysis was performed using the technique of analysis of thematic content. The Subjects recognize the access to various services of the SUS, as well as factors associated with such access, as the referral process, the luck and the belief in God. It was

  9. Spatial and temporal distribution of the Asian fish tapeworm Bothriocephalus acheilognathi (Cestoda: Bothriocephalidea) in the Rio Grande (Río Bravo del Norte).

    Science.gov (United States)

    Bean, Megan G; Bonner, Timothy H

    2010-09-01

    Recent collections of the Asian fish tapeworm Bothriocephalus acheilognathi in the Rio Grande have raised concern about the potential impacts on Rio Grande endemic and imperiled fishes. The objectives of this study were to determine distribution and definitive hosts of the Asian fish tapeworm within the Rio Grande drainage and to quantify occurrences and abundances. In total, 1,992 fish spanning 11 families were collected and examined for Asian fish tapeworms in the Rio Grande and the Pecos and Devils rivers. The parasite was collected from red shiners Cyprinella lutrensis, Tamaulipas shiners Notropis braytoni, sand shiners N. stramineus, river carpsuckers Carpiodes carpio, plains killifish Fundulus zebrinus, western mosquitofish Gambusia affinis, blue suckers Cycleptus elongatus, blacktail shiners Cyprinella venusta, proserpine shiners Cyprinella proserpina, and Manantial roundnose minnow Dionda argentosa, with the latter four species being new host records. Monthly collections of red shiners from Big Bend National Park exhibited prevalence levels above 15% in January-March and December and below 10% during April-June and October. With over 50% of the Rio Grande icthyofauna in Texas considered imperiled, the occurrence and pathological effects of the Asian fish tapeworm in combination with reduced water quantity and quality and increased habitat fragmentation are of concern for these taxa.

  10. Vertisoles hidromórficos de la planicie costera del Río de La Plata, Argentina Hydromorphic vertisols of the Rio de La Plata coastal plain, Argentina

    Directory of Open Access Journals (Sweden)

    Perla Imbellone

    2011-12-01

    Full Text Available Los suelos predominantes en la Planicie costera del río de La Plata, provincia de Buenos Aires, son Vertisoles hidromórficos. Se estudian cuatro suelos representativos en los partidos de La Plata, Ensenada y Berazategui. Se describen y analizan detalladamente las propiedades pedológicas y sedimentológicas. El objeto de esta contribución es analizar: a- la granulometría y mineralogía de los Vertisoles hidro-mórficos de la Llanura de fango del río de la Plata; b- su influencia en la generación de los rasgos morfológicos y c- los procesos de pedogénesis asociados. La morfología de los suelos muestra rasgos de vertisolización e hidromorfismo principalmente en los horizontes superiores y medios de los suelos. Son abundantes los agregados cuneiformes y angulares moderados y fuertes en el solum, con super­ficies de deslizamiento interpedales, a veces estriadas, visibles en distintos niveles de observación. La matriz puede ser moderadamente o marcadamente anisotrópica y muestra zonas de anisotropismo óptico que atraviesan el material fino con patrones variados o aureolas anisotrópicas alrededor de los poros y granos. La hidromorfia es marcada, con anegamientos frecuentes de origen pluvial; la capa freática está a profundidad general entre 0,80 y 1,20 m, por lo que estarían en condiciones de episaturación y endosaturación en distintos mo­mentos del año. Poseen variedad de rasgos redoximórficos, principalmente matrices reducidas (matices de 2,5Y y 5Y e intensidades de 2 o menores, concentraciones redox de hierro y manganeso y pátinas oscuras. La clase textural es arcillosa, con amplio predominio de la arcilla fina sobre la gruesa. Son Vertisoles illíticos, con muy elevado contenido de arcilla total que genera rasgos vérticos. La influencia hidromórfica se manifiesta por la abundancia y color de las pátinas que están relacionadas con el grado de hidromorfía dentro de cada perfil y las propiedades asociadas al proceso

  11. CO-EVOLUTION OF PROTEROZOIC CRATONIC FRAGMENTS IN WESTERN AND NORTHERN MONGOLIA

    Directory of Open Access Journals (Sweden)

    Uyanga Bold

    2017-01-01

    Full Text Available CAOB occupies a vast area that extends from the Urals to the Far East Asia and from the Siberian craton to the North China and Tarim cratons (Fig. 1, A. In order to better constrain Precambrian tectonic evolution of the CAOB, it is important to revisit Precambrian terranes of Mongolia as outlined in Badarch et al. [2002] that contain Archean to Proterozoic metamorphic basement and Neoproterozoic metasedimentary and volcanic rocks.

  12. Geotectonic setting and metallogeny of the northern São Francisco craton, Bahia, Brazil

    OpenAIRE

    Teixeira, João Batista Guimarães; Silva, Maria da Glória da; Misi, Aroldo; Cruz, Simone Cerqueira Pereira; Sá, José Haroldo da Silva

    2010-01-01

    p. 71 - 83 This paper aims at establishing a tectonic and temporal framework to characterize the metallogenic processes that contributed to the origin of the mineral provinces in the northern São Francisco Craton. Many Archean mineralizations (eg. massive sulfide zinc, lead, zinc and copper, besides magnesiteetalc, ironetitaniumevanadium, iron, chromite and manganese) were generated before the assembly of the Craton. Deposits of chromite, nickel, gold and emerald were produced during the P...

  13. EL SITIO ARQUEOLÓGICO ENSENADA DEL BELLACO (GUALEGUAYCHÚ, ENTRE RÍOS COMO INDICADOR DE LA PRESENCIA GUARANÍ EN EL RÍO URUGUAY INFERIOR / O sítio arqueológico Ensenada del Bellaco (Gualeguaychú, Entre Ríos como indicador da presença guarani no rio Urugua

    Directory of Open Access Journals (Sweden)

    Juan Carlos Castro

    2014-12-01

    Full Text Available La presencia de poblaciones guaraníes en la cuenca inferior del río Uruguay fue postulada a partir de referencias etnohistóricas y hallazgos arqueológicos puntuales, siendo escasas las referencias concretas a sitios arqueológicos. Los objetivos de este artículo son, por un lado presentar el sitio arqueológico Ensenada del Bellaco, ubicado en la desembocadura del río Gualeguaychú (provincia de Entre Ríos; y por otro lado contribuir a la discusión sobre la expansión guaraní en las latitudes meridionales de la cuenca del Plata. Se realizaron trabajos de campo y de laboratorio. Este último incorporó además el análisis de materiales arqueológicos procedentes de este sitio y depositados en el Museo Arqueológico Manuel Almeida de Gualeguaychú. El conjunto de materiales analizados incluyó restos óseos humanos, líticos y alfarería. Como resultado se determinó que el registro arqueológico estudiado presenta características similares a los contextos asignados a la expansión de los guaraníes. Se concluye que Ensenada del Bellaco representa un asentamiento estable ocupado por grupos guaraníes durante el Holoceno tardío. Palabras clave: Arqueología Guaraní, Alfarería, Lítico, Restos Humanos, Cuenca del Plata, Holoceno tardío. O sítio arqueológico Ensenada del Bellaco (Gualeguaychú, Entre Ríos como indicador da presença guarani no rio Uruguai inferior   Resumo A presença de populações guaranis na bacia inferior do rio Uruguai foi inferida a partir de referências etno-históricas e evidências arqueológicas pontuais, sendo raros os casos onde está correlacionada a sítios arqueológicos. Os objetivos deste artigo são, por um lado apresentar o sítio arqueológico Ensenada del Bellaco, localizado na desembocadura do rio Gualeguaychú (província de Entre Ríos, e por outro lado contribuir à discussão sobre a expansão guarani nas latitudes meridionais da bacia do rio da Prata. Foram realizados trabalhos de campo

  14. Heterogeneously hydrated mantle beneath the late Archean Yilgarn Craton

    Science.gov (United States)

    Ivanic, T. J.; Nebel, O.; Jourdan, F.; Faure, K.; Kirkland, C. L.; Belousova, E. A.

    2015-12-01

    Archean mafic-ultramafic melts, crystallized as layered intrusions in the upper crust and extruded as komatiitic flows, are primary probes of upper mantle chemistry. However, the message from their primary chemical composition can be compromised by different modes of contamination. Contaminants are typically cryptic in terms of their geochemical and isotopic signals but may be related to metasomatised mantle sources, ambient crustal assimilation or subduction-related inputs. In this work we present critical evidence for both dry and wet Archean mantle sources for two juxtaposed layered intrusions in the Australian Yilgarn Craton. The ca. 2813 Ma Windimurra and ca. 2800 Ma Narndee Igneous Complexes in Western Australia are two adjacent layered intrusions and would be expected to derive via similar mantle sections. A key difference in their chemistry is the presence of crystal-bound water in the Narndee Igneous Complex, represented primarily by abundant hornblende. Such a primary hydrous phase is notably absent in the Windimurra Igneous Complex. New 40Ar/39Ar plateau ages for fresh Narndee hornblende (weighted mean: 2805 ± 14 Ma, MSWD = 1.8, probability = 0.18) agrees with the published U-Pb age of 2800 ± 6 Ma for the complex and is consistent with a magmatic origin for this phase. Zircon Hf and whole-rock Hf and Nd isotopes for the Narndee Igneous Complex indicate only minor crustal contamination, in agreement with H and O isotope values in amphibole and O isotope values in rare zircon crystals, plagioclase and pyroxene within both complexes. These findings illustrate a fast temporal transition, in proximal bodies, from anhydrous to hydrous mantle sources with very minor crustal contamination. These large layered mafic-ultramafic intrusions are igneous bodies with a primitive chemical bulk composition that requires large degrees of mantle melting. This has been attributed by many workers to mantle plume activity, yet not without dispute, as subduction-related flux

  15. The Rondonian-San Ignacio Province in the SW Amazonian Craton: An overview

    Science.gov (United States)

    Bettencourt, Jorge Silva; Leite, Washington Barbosa; Ruiz, Amarildo Salina; Matos, Ramiro; Payolla, Bruno Leonelo; Tosdal, Richard M.

    2010-01-01

    The Rondonian-San Ignacio Province (1.56-1.30 Ga) is a composite orogen created through successive accretion of arcs, ocean basin closure and final oblique microcontinent-continent collision. The effects of the collision are well preserved mostly in the Paraguá Terrane (Bolivia and Mato Grosso regions) and in the Alto Guaporé Belt and the Rio Negro-Juruena Province (Rondônia region), considering that the province was affected by later collision-related deformation and metamorphism during the Sunsás Orogeny (1.25-1.00 Ga). The Rondonian-San Ignacio Province comprises: (1) the Jauru Terrane (1.78-1.42 Ga) that hosts Paleoproterozoic basement (1.78-1.72 Ga), and the Cachoeirinha (1.56-1.52 Ga) and the Santa Helena (1.48-1.42 Ga) accretionary orogens, both developed in an Andean-type magmatic arc; (2) the Paraguá Terrane (1.74-1.32 Ga) that hosts pre-San Ignacio units (>1640 Ma: Chiquitania Gneiss Complex, San Ignacio Schist Group and Lomas Manechis Granulitic Complex) and the Pensamiento Granitoid Complex (1.37-1.34 Ga) developed in an Andean-type magmatic arc; (3) the Rio Alegre Terrane (1.51-1.38 Ga) that includes units generated in a mid-ocean ridge and an intra-oceanic magmatic arc environments; and (4) the Alto Guaporé Belt (<1.42-1.34 Ga) that hosts units developed in passive marginal basin and intra-oceanic arc settings. The collisional stage (1.34-1.32 Ga) is characterized by deformation, high-grade metamorphism, and partial melting during the metamorphic peak, which affected primarily the Chiquitania Gneiss Complex and Lomas Manechis Granulitic Complex in the Paraguá Terrane, and the Colorado Complex and the Nova Mamoré Metamorphic Suite in the Alto Guaporé Belt. The Paraguá Block is here considered as a crustal fragment probably displaced from its Rio Negro-Juruena crustal counterpart between 1.50 and 1.40 Ga. This period is characterized by extensive A-type and intra-plate granite magmatism represented by the Rio Crespo Intrusive Suite (ca. 1

  16. Disclosing the Paleoarchean to Ediacaran history of the São Francisco craton basement: The Porteirinha domain (northern Araçuaí orogen, Brazil)

    Science.gov (United States)

    Silva, Luiz Carlos da; Pedrosa-Soares, Antonio Carlos; Armstrong, Richard; Pinto, Claiton Piva; Magalhães, Joana Tiago Reis; Pinheiro, Marco Aurélio Piacentini; Santos, Gabriella Galliac

    2016-07-01

    This geochronological and isotopic study focuses on one of the Archean-Paleoproterozoic basement domains of the São Francisco craton reworked in the Araçuaí orogen, the Porteirinha domain, Brazil. It also includes a thorough compilation of the U-Pb geochronological data related to the adjacent Archean and Rhyacian terranes from the São Francisco craton and Araçuaí orogen. The main target of this study is the TTG gneisses of the Porteirinha complex (Sample 1). The gneiss dated at 3371 ± 6 Ma unraveled a polycyclic evolution characterized by two metamorphic overprinting episodes, dated at 3146 ± 24 Ma (M1) and ca. 600 Ma (M2). The former (M1) is so far the most reliable evidence of the oldest metamorphic episode ever dated in Brazil. The latter (M2), in turn, is endemic in most of the exposed eastern cratonic margin within the Araçuaí orogen. Whole-rock Sm-Nd analysis from the gneiss provided a slightly negative εNd(t3370) = - 0.78 value, and a depleted mantle model (TDM) age of 3.5 Ga, indicating derivation mainly from the melting of a ca. 3.5 Ga tholeiitic source. Sample 2, a K-rich leuco-orthogneiss from the Rio Itacambiriçu Complex, was dated at 2657 ± 25 Ma and also presents a ca. 600 Ma M2 overprinting M2 age. The other two analyses were obtained from Rhyacian granitoids. Sample 3 is syn-collisional, peraluminous leucogranite from the Tingui granitic complex, showing a crystallization age of 2140 ± 14 Ma and strong post-crystallization Pb*-loss, also ascribed to the Ediacaran overprinting. Accordingly, it is interpreted as a correlative of the late Rhyacian (ca. 2150-2050 Ma) collisional stage of the Mantiqueira orogenic system/belt (ca. 2220-2000 Ma), overprinted by the Ediacaran collage. Sample 4 is a Rhyacian post-orogenic (post-collisional), mixed-source, peralkaline, A1-type suite, with a crystallization age of 2050 ± 10 Ma, presenting an important post-crystallization Pb*-loss related to Ediacaran collision. The focused region records some

  17. Accessibility and demand at an Emergency Care Unit: the user's perspective La accesibilidad y demanda de atención de emergencia: perspectiva del usuario Acessibilidade e demanda em uma Unidade de Pronto Atendimento: perspectiva do usuário

    Directory of Open Access Journals (Sweden)

    Mariana Figueiredo Souza Gomide

    2012-01-01

    Full Text Available AIM: To analyze the search for Emergency Care (EC in the Western Health District of Ribeirão Preto (São Paulo, in order to identify the reasons why users turn to these services in situations that are not characterized as urgencies and emergencies. METHODS: A qualitative and descriptive study was undertaken. A guiding script was applied to 23 EC users, addressing questions related to health service accessibility and welcoming, problem solving, reason to visit the EC and care comprehensiveness. RESULTS: The subjects reported that, at the Primary Health Care services, receiving care and scheduling consultations took a long time and that the opening hours of these services coincide with their work hours. At the EC service, access to technologies and medicines was easier. CONCLUSION: Primary health care services have been unable to turn into the entry door to the health system, being replaced by emergency services, putting a significant strain on these services' capacity.OBJETIVO: Analizar la demanda del servicio de emergencia (SE del Distrito Oeste de Salud del municipio de Ribeirão Preto (Sao Paulo para identificar los motivos por los cuales los usuarios, en situaciones no caracterizadas como urgencia y emergencia, buscan ese servicio. MÉTODOS: Se trata de un estudio cualitativo descriptivo. Fue aplicado una guia norteadora a 23 usuarios del SE, abordándose preguntas relativas a la accesibilidad y acogida de los servicios de salud, resolución de las necesidades, motivo por el cual buscan el SE e integralidad de la atención. RESULTADOS: Los sujetos relataron que, en las Unidades Básicas de Salud, hubo demora en la atención y la programación de las consultas y que el horario de funcionamiento de esos servicios coincide con la jornada de trabajo de los usuarios. En el SE, el acceso fue facilitado a las tecnologías y medicamentos. CONCLUSIÓN: Los servicios de atención básica no han conseguido convertirse en la puerta de entrada del

  18. Produção científica em Educação em Enfermagem: grupos de pesquisa Rio de Janeiro e Minas Gerais Producción científica en Educación en Enfermería: grupos de investigación del Rio de Janeiro y Minas Gerais Production of scientific in Education in Nursing: research groups of Rio de Janeiro and Minas Gerais

    Directory of Open Access Journals (Sweden)

    Diana Coelho Gomes

    2011-06-01

    Full Text Available O estudo tem por objetivo caracterizar as produções científicas dos Grupos de Pesquisa em Educação em Enfermagem (GPEE dos Estados do Rio de Janeiro e Minas Gerais do Brasil. Pesquisa documental, quantitativa, descritiva retrospectiva, conduzida pela busca dos Currículos Lattes de todos os pesquisadores que integravam os GPEE dos Estados supracitados, seguida pela busca, organização e qualificação da produção científica dos respectivos pesquisadores, em acordo ao Qualis/CAPES. O período investigado foi 1995-2009 (cinco últimos triênios da CAPES e incluiu na análise: artigos científicos, livros, capítulos de livros e trabalhos completos em anais de eventos. Os resultados indicaram que o Rio de Janeiro apresenta maior número de produção de artigos científicos em Educação em Enfermagem, com destaque à qualificação dos pesquisadores em nível de doutorado. Os dois Estados apresentam fatores históricos e sócio-econômicos favoráveis ao desenvolvimento científico.El objetivo del estudio fue caracterizar la producción científica de los Grupos de Investigación en Enfermería (GPEE de las Provincias de Rio de Janeiro y Minas Gerais de Brasil. Investigación documental, retrospectivo cuantitativo, descriptivo, impulsada por la búsqueda de los Curriculos Lattes de todos los investigadores que participan de los Grupos de Investigación de las Provincias ya citadas, seguido de la búsqueda, clasificación y organización de la producción científica de los investigadores de acuerdo con los criterios de evaluación del Qualis/CAPES. El período investigado fue de 1995-2009 (los cinco últimos trienios de la CAPES y se incluyeron en el análisis los artículos científicos, libros, capítulos de libros y ponencias en actas de congresos. Los resultados indican que el Rio de Janeiro presenta un número mayor de artículos científicos en Educación en Enfermería y se destaca la cualificación de los investigadores en nivel

  19. Seismic anisotropy of Precambrian lithosphere: Insights from Rayleigh wave tomography of the eastern Superior Craton

    Science.gov (United States)

    Petrescu, Laura; Darbyshire, Fiona; Bastow, Ian; Totten, Eoghan; Gilligan, Amy

    2017-05-01

    The thick, seismically fast lithospheric keels underlying continental cores (cratons) are thought to have formed in the Precambrian and resisted subsequent tectonic destruction. A consensus is emerging from a variety of disciplines that keels are vertically stratified, but the processes that led to their development remain uncertain. Eastern Canada is a natural laboratory to study Precambrian lithospheric formation and evolution. It comprises the largest Archean craton in the world, the Superior Craton, surrounded by multiple Proterozoic orogenic belts. To investigate its lithospheric structure, we construct a frequency-dependent anisotropic seismic model of the region using Rayleigh waves from teleseismic earthquakes recorded at broadband seismic stations across eastern Canada. The joint interpretation of phase velocity heterogeneity and azimuthal anisotropy patterns reveals a seismically fast and anisotropically complex Superior Craton. The upper lithosphere records fossilized Archean tectonic deformation: anisotropic patterns align with the orientation of the main tectonic boundaries at periods ≤110 s. This implies that cratonic blocks were strong enough to sustain plate-scale deformation during collision at 2.5 Ga. Cratonic lithosphere with fossil anisotropy partially extends beneath adjacent Proterozoic belts. At periods sensitive to the lower lithosphere, we detect fast, more homogenous, and weakly anisotropic material, documenting postassembly lithospheric growth, possibly in a slow or stagnant convection regime. A heterogeneous, anisotropic transitional zone may also be present at the base of the keel. The detection of multiple lithospheric fabrics at different periods with distinct tectonic origins supports growing evidence that cratonization processes may be episodic and are not exclusively an Archean phenomenon.

  20. Insatisfação com o peso e a massa corporal em estudantes do ensino fundamental e médio do sexo feminino no município do Rio de Janeiro Insatisfacción com el peso y masa corporal entre los estudiantes de la escuela primaria y secundaria del sexo femenino em la ciudad de Rio de Janeiro Dissatisfaction with mass and body weight among elementary and high school female students in the city of Rio de Janeiro

    Directory of Open Access Journals (Sweden)

    Alexandre Palma

    2013-03-01

    Full Text Available O objetivo do presente estudo foi verificar a prevalência de insatisfação corporal entre adolescentes do sexo feminino na cidade do Rio de Janeiro. Foram investigadas 2.149 estudantes do sexo feminino, entre 14 e 18 anos de idade. Foram aferidos os pesos, estaturas e índices de massa corporal (IMC informados e desejados. A insatisfação corporal foi considerada de dois modos: a através do desejo de modificar o IMC; e, b o desejo de alterar o peso corporal em valor superior a 10% do peso informado. Do total investigado, 93,58% expressaram o desejo de modificar o IMC. Foi possível observar, ainda, que 42,48% manifestaram insatisfação com o peso. É possível concluir, então, que as adolescentes investigadas manifestaram tendência à insatisfação com o peso corporal.El objetivo del presente estudio fue determinar la prevalencia de la insatisfacción corporal en adolescentes del sexo femenino en la ciudad de Río de Janeiro. Se investigaron 2.149 estudiantes con edades comprendidas entre 14 y 18 años. Se levantaron los pesos, las alturas y los índices de masa corporal (IMC informados y deseados. La insatisfacción con el cuerpo fue considerada de dos maneras: a por el deseo de cambiar el IMC y b el deseo de cambiar el peso (en kg con valores superiores a los 10% del peso informado. Del total, 93,58% expresó el deseo de cambiar su IMC. También observamos que 42,48% reportaron insatisfacción con el peso. Es posible concluir que las adolescentes encuestadas expresaron una tendencia de insatisfacción con su peso corporal.The aim of this study was to verify the prevalence of body dissatisfaction among adolescent girls in the city of Rio de Janeiro. 2,149 female students aged between 14 and 18 years were investigated. Informed and desired weights, heights and the body mass index (BMI were also investigated. The body dissatisfaction was addressed in two ways: a by the desire to change the BMI and b the desire to change the weight (in kg

  1. The Preservation of Meso- Archean Refractory Lithospheric Mantle Underneath the Eastern Margin of the Tanzania Craton

    Science.gov (United States)

    Shu, Q.; Liu, J.; Pearson, G. D.; Gibson, S. A.

    2014-12-01

    Numerous studies on the petrology and geochemistry of peridotite xenoliths from the Tanzanian Craton and its rifted margins have investigated the origin, chemical change and thermal state of the cratonic roots from its core area (Nzega and Mwadui), its Northern (Marsabit) and Eastern margin Labait and Lashaine area (e.g. Dawson, 1964; Henjes-Kunst and Altherr, 1991; Lee & Rudnick, 1999; Chesley et al., 1999; Gibson et al., 2013). These studies suggest that the Tanzanian cratonic mantle formed via high degrees of melt extraction in the Archean (oldest Re-depletion age TRD = 3.4 Ga, Burton et al., 2000) and sev­eral episodes of refertilization. In order to gain further temporal and chemical understanding on the effects of tectonic processes on cratonic roots, we carried out a Re-Os isotopic study on peridotites (n = 11) from Lashaine, which will be followed by Lu-Hf, Sm-Nd and Sr isotope investigations of the constituent minerals of the same samples. The preliminary whole-rock Os isotope data from Lashaine peridotites show a large range of 187Os/188Os (0.1061 - 0.1261), with TRD ages from Meso-Archean to very young (3.1 Ga to 0.3 Ga). There is a negative correlation between TRD and bulk alumina contents. One sample with the lowest Al2O3 yields the oldest age of 3.1 Ga. Five samples range from 2.5 to 2.8 Ga, three give ages close to 2 Ga, and one sample with a high Al2O3 has a TRD at 0.3 Ga. The positive Al2O3-187Os/188Os correlation trend passes above the PM composition may reflect ancient metasomatism by high Re/Os melts or recent metasomatism by very radiogenic Os plume-derived melts. These processes could be related to the evolution of the peripheral Proterozoic mobile belts, or Cenozoic rifting on the Eastern margin. Collectively, our new Os isotope data demonstrate that Meso-Archean (at least 3.1 Ga old) mantle portions are still retained underneath the rifted Eastern margin of the Craton. This is in line with previous results indicating that Archean cratonic

  2. Decomposition of mangrove leaves in the estuary of Paraíba do Sul RiverRio de Janeiro, Brazil Descomposición de hojas de mangle en el estuario del Río Paraíba do SulRio de Janeiro, Brasil

    Directory of Open Access Journals (Sweden)

    Taísa Barroso-Matos

    2012-07-01

    Full Text Available The decomposition rate of senescent leaves of Avicennia germinans, Laguncularia racemosa and Rhizophora mangle in their respective areas of dominance were analyzed in the estuary mangrove of the Paraíba do Sul River, Rio de Janeiro, by the method of litter bags. Results indicated that the rate of decomposition of leaves of L. racemosa (3.2 x 10-3 did not differ significantly from A. germinans and R. mangle (P > 0.05, but that A. germinans (5.1 x 10-3 exhibits a higher decomposition rate than R. mangle (2.7 x 10-3 (P La tasa de descomposición de las hojas senescentes de Avicennia germinans, Laguncularia racemosa y Rhizophora mangle en sus respectivas áreas de dominio se analizaron en los manglares del estuario del río Paraíba do Sul, Rio de Janeiro, por el método de bolsas de resíduos. Los resultados indicaron que la tasa de descomposición de las hojas de L. racemosa (3,2 x 10-3 no difirió significativamente de A. germinans y R. mangle (P > 0,05, pero A. germinans (5,1 x 10-3 presentó una mayor tasa de descomposición que R. mangle (2,7 x 10-3 (P < 0,05. Según la literatura, estas diferencias se deben a las distintas características foliares de las especies (por ejemplo, el contenido de agua, ó la concentración de taninos y nitrógeno. La vida media calculada fue 138 días, 216 y 257 de A. germinans, L. racemosa y R. mangle, respectivamente. Considerando que A. germinans tiene la mayor prevalencia y abundancia en relación con R. mangle, y su cinética de descomposición fue más rápida, se sugiere que esta especie representa la principal fuente de materia orgánica originada en los manglares del estuario del río Paraíba do Sul, así como a las cadenas alimentarias en la región.

  3. Rio de Janeiro y el Campeonato Sudamericano de Futbol de 1919: América del Sur corre detrás de una bola = Rio de Janeiro and the 1919 South American Football Championship: South America runs for a ball Rio de Janeiro e o Campeonato Sul-Americano de futebol de 1919: América do Sul a correr atráz de uma bola

    Directory of Open Access Journals (Sweden)

    João M.C. Malaia Santos

    2013-03-01

    Full Text Available El actual artículo pretende analizar la primera gran competición internacional del fútbol celebrada en Brasil, el Campeonato Sudamericano de Fútbol de 1919, que tuvo lugar en Río de Janeiro. El objetivo es discutir las cuestiones relativas a la organización de la competición, la selección brasileña de fútbol, los intentos de representación del equipo con elementos que identificaran a los jugadores con valores nacionales a través de la gran prensa carioca y paulista y el papel de los espectadores en este proceso. Usando las fuentes impresas y la metodología de la Historia Económica, la intención es poner al lector en contacto con una gran gama de elementos para el estudio de las grandes competiciones deportivas internacionales.------------------------------------------------------------------------------The present article aims at analyzing the first great international football tournament hosted by Brazil, the 1919 South American Football Championship held in Rio de Janeiro. The objective is to discuss questions concerning the organization of the competition, the national football team, the attempts of the great press of Rio de Janeiro and Sao Paulo to represent the team with elements that could identify the players with national values and the role played by the spectators in this process. Using printed documents and the methodology of economic history, the intention is to put the reader in contact with a range of elements for the study of major international sport competitions.O presente artigo destina-se a analisar a primeira grande competição de futebol sediada no Brasil, o Campeonato Sul-Americano de 1919, que aconteceu no Rio de Janeiro. Os objetivos é problematizar as questões que envolveram a organização do torneio, da seleção brasileira de futebol, as tentativas de representação da equipe com elementos que identificassem os jogadores a valores nacionais através da grande imprensa carioca e paulista e o papel

  4. Profile of students registered in nursing auxiliary and technician courses of the Nursing Worker Professionalization Project (PROFAE in Rio de Janeiro - Brazil Perfil de los alumnos que ingresaron a los cursos para auxiliar y técnico de enfermería del Proyecto de Profesionalización de los Trabajadores del Área de Enfermería (PROFAE en Rio de Janeiro - Brasil Perfil dos alunos ingressos nos cursos de auxiliar e técnico de enfermagem do Projeto de Profissionalização dos Trabalhadores da Área de Enfermagem (PROFAE no Rio de Janeiro - Brasil

    Directory of Open Access Journals (Sweden)

    Beatriz Guitton Renaud Baptista de Oliveira

    2007-02-01

    Full Text Available This paper aims to present a profile of students registered in the Professional Training Courses for Nursing Auxiliaries and Complementation Courses for Nursing Technicians of the Nursing Worker Professionalization Project - PROFAE. This quantitative study was carried out in the State of Rio de Janeiro, Brazil, from August 2004 to January 2005, through the application of 1,400 questionnaires. Data analysis used descriptive statistics, with simple frequencies and percentages. After tabulation, data were divided in the following categories: sociodemographic data, educational background, family profile, habits, professional activity, salary range, expectations about PROFAE and nursing, difficulties to participate in the project and the teaching-learning process. Students/workers graduated from the PROFAE program tend to improve the quality of hospital and outpatient care, contributing to labor market dynamics in the health sector.Este trabajo busca presentar el perfil de los alumnos que ingresaron a los cursos de Calificación Profesional para Auxiliar de Enfermería y complementación para Técnico de Enfermería del Proyecto de Profesionalización de los trabajadores del Área de Enfermería. Esta es una investigación cuantitativa, desarrollada en el Estado de Rio de Janeiro, en el período de agosto del 2004 a enero del 2005, con aplicación de 1.400 cuestionarios. Los datos fueron tratados con estadística descriptiva, bajo la forma de frecuencia simple y porcentaje. Después de tabular los datos, fueron divididos en las siguientes categorías: datos sociodemográficos, formación escolar, perfil familiar, hábitos, actuación profesional, piso salarial, expectativas acerca de PROFAE y de la enfermería, dificultades para participar del Proyecto y proceso de enseñanza-aprendizaje. Los alumnos/trabajadores formados por el PROFAE tienden a mejorar la calidad de la atención hospitalaria y ambulatoria, contribuyendo con la dinámica del mercado

  5. A formação do enfermeiro e o fenômeno das drogas no estado do Rio de Janeiro - Brasil: atitudes e crenças La formación del enfermero y el fenómeno de las drogas en el estado de Rio de Janeiro - Brasil: actitudes y creencias Nursing formation and the drugs phenomenon in the state of Rio de Janeiro - Brazil: attitudes and beliefs

    Directory of Open Access Journals (Sweden)

    Gertrudes Teixeira Lopes

    2005-10-01

    Full Text Available O presente estudo consistiu em identificar as atitudes e crenças em relação ao fenômeno das drogas, de alunos matriculados em cursos de graduação em Enfermagem de Universidade Pública do Rio de Janeiro (Brasil. A intenção foi caracterizar o preparo acadêmico e as atitudes e crenças consolidadas durante a formação profissional do enfermeiro. Trata-se de uma investigação descritiva, cuja amostra foi de 122 alunos do último período acadêmico de quatro cursos de Enfermagem. O instrumento de coleta de dados utilizado foi um questionário (escala autoaplicável. Os dados foram coletados entre setembro de 2003 e fevereiro de 2004. O projeto percorreu todos os trâmites necessários a sua execução (avaliação do comitê de ética da Universidade Estadual do Rio de janeiro, autorização das instituições participantes e Termo de Consentimento Livre e Esclarecido assinado pelos alunos. Os resultados evidenciaram a existência de fragilidade nos conhecimentos teóricos específicos (álcool e drogas obtidos pelos estudantes, bem como a manutenção de atitudes e crenças não tão positivas em relação ao usuário, o que poderá interferir na futura atenção de enfermagem.El presente estudio consistió en identificar las actitudes y creencias nciasen relación al fenómeno de las drogas, de alumnos matriculados en cursos de pré-grado en Enfermería de Universidad Publicas de Rio de Janeiro (Brasil. La intención fue caracterizar la preparación académica y las actitudes y creencias consolidadas durante la formación profesional del enfermero. Se trata de una investigación descriptiva, cuya muestra fue de 122 estudiantes del último periodo académico de cuatro cursos de enfermería. El instrumento de recolección de datos utilizado fue un cuestionario (escala auto-aplicable. Los datos fueron recolectados entre septiembre de 2003 y febrero de 2004. El proyecto percorrió todos los trámites necesarios a su ejecución (evaluaci

  6. Análisis Socioeconómico de los Modelos de Finca promovidos por el Programa Ambiental de El Salvador (PAES) en la Microcuenca del Rio Guazapa

    OpenAIRE

    Ramos Cortez, Sigfredo

    2010-01-01

    La investigación se realizó de enero del 2003 hasta agosto del 2004 en la micro cuenca del río Guazapa, la cual tiene una extensión de 139.64 km², ubicada en los departamentos de Cuscatlán y San Salvador, abarcando los municipios de San José Guayabal, Tonacatepeque, Guazapa, San Martín, Oratorio de Concepción y Suchitoto. El trabajo consistió en un estudio socio económico de los modelos de finca implementados en los años 1999 y 2000 por los agricultores que participaron en el proyecto MAG-PAE...

  7. Compositional trends among Kaapvaal Craton garnet peridotite xenoliths and their effects on seismic velocity and density

    DEFF Research Database (Denmark)

    Schutt, Derek; Lesher, Charles

    2010-01-01

    We examine the modes and compositions of garnet-bearing peridotite xenoliths from the Kaapvaal Craton to quantify factors governing density and seismic velocity variations within metasomatically altered cratonic mantle. Three distinct compositional trends are resolved by principal component...... analysis. The first reflects differences in residue composition resulting from partial melting. The second is associated with orthopyroxene (opx) enrichment, possibly due to silica addition by subduction zone fluids in the source region of the xenoliths. The third principal component reflects garnet...... and clinopyroxene enrichment possibly as a consequence of melt infiltration. More than half of the mineral mode variance among Kaapvaal Craton xenoliths can be accounted for by opx enrichment. Melt depletion effects can account for as much as 30% of the variance, while less than 20% of the variance is associated...

  8. Thermal erosion of cratonic lithosphere as a potential trigger for mass-extinction

    Science.gov (United States)

    Pilet, S.; Müntener, O.; Jean, G.; Schoene, B.; Schaltegger, U.

    2016-12-01

    The temporal coincidence between LIPs and mass extinctions has led many to pose a causal relationship between the two. However, there is still no consensus on a mechanistic model that explains how magmatism leads to the turnover of terrestrial and marine plants, invertebrates and vertebrates. Here, we present a synthesis of stratigraphic constraints on the Triassic-Jurassic and Pliensbachian-Toarcian boundaries combined with geochronological data demonstrating that these biotic crises are both associated with rapid change from an initial cool period to greenhouse conditions. As current hypothesis for LIPs seems unable to produce these successive climatic changes, we evaluate an alternative suggesting that the initial cooling could be due to gas release during the initial thermal erosion of the cratonic lithosphere due to emplacement of the CAMP and Karoo-Ferrar volcanic provinces. Karoo and CAMP areas were underlain by thick lithosphere (>200 km) prior to continental break up. Even in presence of abnormal potential mantle temperature, the presence of thick lithosphere excludes significant melting of the asthenospheric mantle without initial stage of thermal erosion of the cratonic lithosphere. Various studies on Kaapvaal craton have shown that sulfide minerals are enclosed in the basal part of the cratonic lithosphere. We argue that initial gas emission was dominated by sulfur liberated from sulfide-bearing cratonic lithosphere causing global cooling and eustatic regression, which was followed by warming/transgression associated with the progressive increase of CO2 in the atmosphere associated to LIPs emission. We suggest that the nature of the underlying lithosphere during large LIP eruption exerts an important control on the consequences at the Earth's surface. This model offers an explanation for why LIPs erupted through oceanic lithosphere are not associated with climatic and biotic crises comparable to LIPs emitted through cratonic lithosphere.

  9. The southern edge of cratonic North America: Evidence from new satellite magnetometer observations

    DEFF Research Database (Denmark)

    Purucker, M.; Langlais, B.; Olsen, Nils

    2002-01-01

    , associated with spherical harmonic degrees 15-26 and centered over Kentucky and the south-central United States, are the manifestations of the magnetic edges of the southern boundaries of cratonic North America. The techniques and models developed here may be of use in defining other cratonic boundaries.......[1] A global model is developed for both induced and remanent magnetizations in the terrestrial lithosphere. The model is compared with, and well-described by, Orsted satellite observations. Interpretation of the observations over North America suggests that the large total field anomalies...

  10. The southern edge of cratonic North America: Evidence from new magnetic satellite observations

    DEFF Research Database (Denmark)

    Purucker, M.; Mandea, M.; Hulot, G.

    2002-01-01

    with spherical harmonic degrees 15-26 and centered over Kentucky and the south-central United States, are the manifestations of the magnetic edges of the southern boundaries of cratonic North America. The techniques and models developed here may be of use in defining other cratonic boundaries.......A global model is developed for both induced and remanent magnetizations in the terrestrial lithosphere. The model is compared with, and well-described by, Ørsted satellite observations. Interpretation of the observations over North America suggests that the large total field anomalies, associated...

  11. Craton-derived alluvium as a major sediment source in the Himalayan Foreland Basin of India

    DEFF Research Database (Denmark)

    Sinha, R.; Kettanah, Y.; Gibling, M.R.

    2009-01-01

    , which drain northward into the Yamuna, are vigorous monsoonal rivers with large catchments. Stratigraphic and petrographic evidence shows that sediment derived largely from these rivers extends north of the axial Yamuna River. Red feldspathic sand and gravel underlie much of the southern foreland basin...... of the Bundelkhand Complex. Along the Yamuna Valley the red alluvium is overlain by gray alluvium dated at 82–35 ka ago, which also yields a cratonic signature, with large amounts of smectite derived from the Deccan Traps. Cratonic contributions are evident in alluvium as young as 9 ka ago in a section 25 km north...

  12. Palaeomagnetism of the early Palaeoproterozoic, volcanic Hekpoort Formation (Transvaal Supergroup) of the Kaapvaal craton, South Africa

    Science.gov (United States)

    Humbert, F.; Sonnette, L.; de Kock, M. O.; Robion, P.; Horng, C. S.; Cousture, A.; Wabo, H.

    2017-05-01

    The Kaapvaal craton (South Africa) was the host of several major magmatic events during the Palaeoproterozoic, including the volcanic Hekpoort and Ongeluk Formations. Their possible comagmatic origin is the subject of a long debate. We performed a palaeomagnetic study of the Hekpoort Formation to be compared with the available palaeopole of the Ongeluk Formation, but also to contribute to the apparent polar wander path of the Kaapvaal craton. Characterization of magnetic mineralogy by three-axis thermal demagnetization of isothermal remanent magnetization and magnetic susceptibility versus temperature points out magnetite as the main remanence carrier in most samples.

  13. Strong crustal seismic anisotropy in the Kalahari Craton based on Receiver Functions

    DEFF Research Database (Denmark)

    Thybo, Hans; Soliman, Mohammad Youssof Ahmad; Artemieva, Irina

    2015-01-01

    Earlier seismic studies of the Kalahari Craton in southern Africa infer deformation of upper mantle by flow with fast direction of seismic anisotropy being parallel to present plate motion, and/or report anisotropy frozen into the lithospheric mantle. We present evidence for very strong seismic...... anisotropy in the crust of the Kalahari craton, which is 30-40% of the total anisotropy as measured by SKS splitting. Our analysis is based on calculation of receiver functions for the data from the SASE experiment which shows strong splitting between the SV and SH components. The direction of the fast axes...

  14. Perfil do doente renal crônico no ambulatório multidisciplinar de um hospital universitário Perfil del enfermo renal crónico de consultorios externos multidisciplinario de un hospital universitario Demographic profile of individuals with chronic renal disease from a multidisciplinary outpatient clinic of a university teaching hospital

    Directory of Open Access Journals (Sweden)

    Simone Martins Rembold

    2009-01-01

    Full Text Available OBJETIVO: Descrever o perfil do cliente com doença renal crônica em tratamento conservador no Ambulatório Multidisciplinar do Hospital Universitário Antonio Pedro. MÉTODOS: O estudo é descritivo tendo sido analisados 72 prontuários de pacientes atendidos nos anos de 2006 a 2008. Os dados foram processados eletronicamente com o auxílio dos programas EXCEL 2007 e SPSS 13.0. RESULTADOS: A média de idade dos pacientes foi 59 + 14 anos sendo 60% do sexo feminino. Em relação à escolaridade, 42% tinham ensino fundamental incompleto. A maior parte encontrava-se no estágio 4 da doença renal crônica, sendo as principais doenças de base o diabetes mellitus e a hipertensão arterial. Mais de 80% usavam anti-hipertensivos, e mais da metade usava diuréticos. O sintoma predominante foi a noctúria. Apenas em sete pacientes foi confeccionada fístula artério-venosa. CONCLUSÃO: A população atendida no referido ambulatório consistiu, na sua maior parte de pacientes na quinta ou sexta década de vida, com predominância do sexo feminino. A maioria encontrava-se no estágio 4 da classificação do DOQI para doença renal crônica sendo diabetes a principal causa da doença renal.OBJETIVO: Describir el perfil del cliente con enfermedad renal crónica en tratamiento conservador en Consultorio Externo Multidisciplinario del Hospital Universitario Antonio Pedro. MÉTODOS: Se trata de un estudio descriptivo en el que se analizaron 72 historias clínicas de pacientes atendidos en los años de 2006 a 2008. Los dados fueron procesados electrónicamente con la ayuda de los programas EXCEL 2007 y SPSS 13.0. RESULTADOS: El promedio de edad de los pacientes fue entre 59 + 14 años siendo el 60% del sexo femenino. En relación a la escolaridad, el 42% tenían primaria incompleta. La mayor parte se encontraba en la fase 4 de la enfermedad renal crónica, siendo las principales enfermedades de base la diabetes mellitus y la hipertensión arterial. Más del

  15. Perfil demográfico dos Hupd'äh, povo Maku da região do Alto Rio Negro, Amazonas (2000-2003 Perfil demográfico de los Hupd'äh, pueblo Maku de la región del Alto Rio Negro, Amazonas (2000-2003 Demographic profile of the Hupd'äh, a Maku people living the Upper Rio Negro Region, State of Amazonas, Brazil (2000-2003

    Directory of Open Access Journals (Sweden)

    Marina Machado

    2009-06-01

    Full Text Available Os Hupd'äh são um povo de língua Maku, habitante da região do Alto Rio Negro, Amazonas, Brasil. Lideranças indígenas, antropólogos, missionários e profissionais de saúde afirmam que eles estariam vivendo em condições de saúde precárias, com alta mortalidade geral e infantil. A partir de dados provenientes do Distrito Especial Indígena do Rio Negro - DSEI-RN, da Funasa/MS, para o período 2000-2003, foi realizado um estudo descritivo para avaliar o perfil demográfico e conhecer melhor essa população, contribuindo para a implementação de políticas públicas que lhe favoreçam e para os debates em antropologia, demografia e saúde indígena. A população de 1.487 indivíduos, em 2003, cresceu 8,4% ao ano no período estudado. Sua composição por idade e sexo indica concentração de jovens (44,9% com menos de 15 anos, além da predominância de população do sexo masculino. A taxa bruta de natalidade (TBN média do período foi de 33,4 nascimentos por mil habitantes, a de fecundidade total (TFT correspondeu a 3,4 filhos por mulher, a de mortalidade (TBM foi de 10 óbitos por mil habitantes e a de mortalidade infantil (TMI chegou a 116,3 óbitos por mil nascimentos. O aperfeiçoamento da coleta de informações, o elevado crescimento vegetativo e a intensa mobilidade espacial dos Hupd'äh poderiam explicar o alto ritmo de crescimento verificado entre 2000 e 2003.Los Hupd'äh son un pueblo de lengua Maku, habitante de la región del Alto Río Negro, Amazonas, Brasil. Liderazgos indígenas, antropólogos, misionarios y profesionales de la salud, afirman que estarían viviendo en condiciones de salud precarias, con alta mortalidad general e infantil. A partir de datos provenientes del Distrito Especial Indígena del Río Negro - DSEI-RN, de la Funasa/MS, para el período 2000-2003, fue realizado un estudio descriptivo para evaluar el perfil demográfico y conocer mejor esta población, contribuyendo con la implementación de pol

  16. A família e o doente mental usuário do hospital-dia: estudo de um caso La familia y el enfermo mental usuário del hospital/día: estudo de un caso The family and the mentally-ill user of day-hospitals: a case study

    Directory of Open Access Journals (Sweden)

    Ana Ruth Macêdo Monteiro

    2000-12-01

    Full Text Available O hospital-dia, como modalidade de assistência psiquiátrica, proporciona a família a possibilidade de vivenciar junto ao seu familiar doente uma maior convivência durante o tratamento, e a leva a buscar junto a esse familiar formas de facilitar o processo adaptativo de interação na família. A proposta deste estudo se configura na busca de compreender de que modo a família e o usuário do hospital-dia interagem no recesso do lar e descrever a experiência narrada por uma família. A família deste estudo foi selecionada a partir de um usuário do hospital-dia que possuísse ou possua história anterior de internações psiquiátricas. Foram entrevistados cinco membros da família em estudo. A partir das experiências descritas pelos sujeitos emergiram duas grandes categorias temáticas: A família vivenciando junto ao seu familiar o hospital-dia , A convivência família ¾ usuário. As experiências relatadas pelos sujeitos neste estudo são bastante significativas para a construção de novas possibilidades na assistência à família do doente mental.El hospital-día como modalidad de atención psiquiátrica, proporciona a la familia la posibilidad de tener una mayor convivencia con su familiar enfermo durante el tratamiento y la lleva a buscar de forma conjunta con éste, formas para facilitar el proceso de adaptación e interacción en la familia. El estudio pretende comprender la manera como la familia y usuario del hospital-día interactuan en el ambiente del hogar y describir la experiencia narrada por una familia. La familia de este estudio fue seleccionada de un usuario del hospital-día que tuviese historia anterior de hospitalizaciones psiquiátricas. Fueron entrevistados cinco familiares. A partir de las experiencias descritas por los sujetos se formaron dos grandes categorías temáticas: La familia conviviendo con su familiar en el hospital-día y la convivencia familia/usuario. Las experiencias relatadas por los sujetos en

  17. Os sentidos do trabalho para sujeitos inseridos em "empreendimentos solidários" Los sentidos del trabajo para sujetos inseridos en "emprendimientos solidarios" Meaning of work for people participating in solidary enterprises

    Directory of Open Access Journals (Sweden)

    Márcia Luíza Pit Dal Magro

    2008-12-01

    Full Text Available Seguem aqui alguns dos resultados de uma pesquisa cujo objetivo foi investigar os sentidos do trabalho para sujeitos inseridos em um "empreendimento solidário", a partir do estudo de caso de uma cooperativa de serviços gerais. Foram utilizados como procedimentos para coleta de informações entrevistas semi-estruturadas e as observações com registro em diário de campo. As informações foram analisadas através da análise de conteúdo. Os resultados encontrados apontam para o trabalho enquanto via de reconhecimento e/ou desvalorização social, bem como para o sentido de subsistência que ele assume junto aos cooperados. Neste contexto, os sentidos do trabalho relacionam-se aos sentidos constituídos acerca do cooperativismo, tendo este último grande influência de aspectos como a autogestão no empreendimento. Por fim, o que entra em questão é a própria existência de uma economia solidária, com suas possibilidades e limitações na promoção da emancipação social e da desalienação do trabalho.El objetivo de la presente investigación fue buscar los sentidos del trabajo para sujetos inseridos en un "emprendimiento solidario", a partir del estudio del caso de una cooperativa de servicios generales. Para eso, han sido utilizados como procedimientos de investigación, entrevistas semiestructuradas y un diario de campo y las informaciones han sido analizadas a partir del Análisis de Contenido. Las consideraciones acerca de esta investigación apuntan hacia el trabajo como vía de reconocimiento y/o desvalorización social, así como, para el sentido de subsistencia que el mismo asume para con los cooperados. Los sentidos del trabajo se relacionan con los sentidos constituidos de cooperativismo, teniendo este último, gran influencia de aspectos como la autogestión en el emprendimiento. Para finalizar, lo que entra en cuestión es la propia existencia de una Economía Solidaria y sus posibilidades y limitaciones en la promoción de

  18. DETERMINACIÓN DE HIDROCARBUROS AROMÁTICOS POLICICLICOS (HPAs EN SEDIMENTOS DEL RIO SÃO FRANCISCO - ESTADO DE BAHIA - BRASIL

    Directory of Open Access Journals (Sweden)

    Alexsandro Fiscina de Santana

    2014-08-01

    Full Text Available Este estudio tiene como objetivo realizar una evaluación de la contaminación de los hidrocarbonatos aromáticos policíclicos (HAPs, en sedimentos del tramo submedio del Río São Francisco. Las muestras de sedimentos superficiales fueron recogidas mediante una draga tipo Petersen en veintiuna estaciones entre las localidades de Sobradinho y Curaçá. Además fueron realizadas medidas de parámetros físico-químicos en el fondo de la columna de agua y tamEste estudio tiene como objetivo realizar una evaluación de la contaminación de los hidrocarbonatos aromáticos policíclicos (HAPs, en sedimentos del tramo submedio del Río São Francisco. Las muestras de sedimentos superficiales fueron recogidas mediante una draga tipo Petersen en veintiuna estaciones entre las localidades de Sobradinho y Curaçá. Además fueron realizadas medidas de parámetros físico-químicos en el fondo de la columna de agua y también la caracterización física y química de los sedimentos. La determinación de los 15 HAPs prioritarios se realizó mediante la técnica de cromatografía de líquidos de alta resolución (HPLC con detector de fluorescencia. Los niveles de concentración de los HAPs se situaron entre 6,15 y 166 ƞg.g-1, indicando un grado de contaminación de bajo a moderado. Se pudo observar, a través de las relaciones moleculares y del análisis multivariante, la predominancia de HAPs originados por procesos de combustión.  bién la caracterización física y química de los sedimentos. La determinación de los 15 HAPs prioritarios se realizó mediante la técnica de cromatografía de líquidos de alta resolución (HPLC con detector de fluorescencia. Los niveles de concentración de los HAPs se situaron entre 6,15 y 166 ƞg.g-1, indicando un grado de contaminación de bajo a moderado. Se pudo observar, a través de las relaciones moleculares y del análisis multivariante, la predominancia de HAPs originados por procesos de combustión.  

  19. Conflictos por recursos hídricos interprovinciales y tutela ambiental: el caso de la salinización del Rio Colorado en el sur bonaerense

    Directory of Open Access Journals (Sweden)

    María de las Nieves Cenicacelaya

    2017-07-01

    Full Text Available La Constitución Argentina establece que las provincias son dueñas de sus recursos naturales pero también que cuando éstos son interprovinciales es necesario que su uso y aprovechamiento sea acordado entre las partes; y, finalmente cuando esos acuerdos fracasan, es la Corte Suprema la que debe resolver el conflicto. Los desacuerdos entre las provincias muy frecuentemente suceden por el uso y aprovechamiento de aguas inter-jurisdiccionales. En este trabajo abordaremos el caso de la salinización del Río Colorado, que, como consecuencia del obrar unilateral e inconsulto de la Provincia de La Pampa puede producir graves e irreparables daños al ambiente en el sur de la Provincia de Buenos Aires y que ha provocado recientemente un juicio entre ambas en el más alto tribunal federal.

  20. LA LOCALIDAD HISTÓRICO ARQUEOLÓGICA DEL RÍO SAN SALVADOR (SORIANO, URUGUAY The historical archaeological town of Rio San Salvador (Soriano, Uruguay

    Directory of Open Access Journals (Sweden)

    José López Mazz

    2014-12-01

    Full Text Available Los primeros cronistas de la conquista del Río de la Plata expusieron la diversidad cultural reinante en el área en el siglo XVI. Las investigaciones arqueológicas de los años 60 y 70 confirman, a nivel arqueológico, la intensa ocupación de la que fue objeto esta zona próxima a la confluencia del río Paraná con el río Uruguay. Este trabajo presenta información producida durante un trabajo de diagnóstico realizado en el marco de la llamada Arqueología Pública, en un sitio de ocupación española del siglo XVI ubicado al oriente de dicha confluencia. Los resultados muestran que la ocupación del sitio desde el año 1000 AP está caracterizada por una amplia diversidad de estilos cerámicos. El área constituyó un lugar estratégico para los asentamientos europeos en función de la presencia de redes de intercambio pre existente. La información producida permite afinar la secuencia cronológica prehistórica para el bajo río Uruguay, al tiempo que abre el debate  respecto de la dinámica etnohistórica regional y del rol jugado por este particular asentamiento humano.   Palabras claves: asentamientos europeos, Uruguay, río San Salvador, siglo XVI.    Abstract Early chroniclers of the conquest of the Río de la Plata exposed the cultural diversity prevailing in the area in the sixteenth century. Archaeological research during the 60’s and 70’s confirm an intense occupation of the confluence of the Paraná river and the Uruguay river area. This paper presents information recovered during a diagnostic fieldwork developed on a Spanish settlement from the sixteenth century. The results show an intense occupation of the site since 1000 AP, characterized by a wide variety of ceramic styles. The area was a strategic location for European occupation due to the presence of preexisting exchange networks. Information produced refines prehistoric chronological sequence for lower Uruguay river while opening the discussion about regional

  1. O risco do uso de drogas no trabalho portuário: estudo no extremo sul do Brasil El riesgo del uso de drogas en el trabajo portuario: estudio en el extremo sur del Brasil The risk of the use of drugs in the harbour work: study in the southern extreme of Brazil

    Directory of Open Access Journals (Sweden)

    Jorgana Fernanda de Souza Soares

    2007-12-01

    Full Text Available Este é um estudo quantitativo, exploratório e descritivo. Objetivou identificar a realidade do uso de drogas entre os trabalhadores portuários avulsos no microambiente portuário, no extremo sul do Brasil. A amostra constituiu-se de 306 trabalhadores. Os dados foram coletados através de entrevista estruturada e individual e analisados quantitativamente. Dos participantes, 43,14% responderam que seus colegas já trabalharam sob o efeito de drogas, e as mais utilizadas foram o álcool (94,70% e a maconha (77,27%. O motivo apontado com maior freqüência para o uso foi a dependência (40,15%. O conhecimento da realidade do usuário de drogas e a preocupação com o uso em ambientes de trabalho tornam-se ferramentas importantes para o enfermeiro, posicionando-o como colaborador e parceiro na sensibilização dos indivíduos para a diminuição dos riscos decorrentes do uso de drogas na vida do trabalhador e no ambiente de trabalho.Esto es un estudio cuantitativo, exploratorio y descriptivo. Objetiva identificar la realidad del uso de drogas entre los trabajadores portuarios autónomos en el micro ambiente portuario, en la extremidad del sur del Brasil. La muestra consistió en 306 trabajadores. Los datos fueran recogidos a través de entrevista estructurada, individual y analizada de modo cuantitativo. De los participantes, 43.14% habían contestado a que sus colegas habían trabajado sobre el efecto de drogas y las más utilizadas fueron el alcohol (94.70% y la marihuana (77.27%. La razón apuntada con mayor frecuencia fue la dependencia (40.15%. El conocimiento de la realidad del usuario de drogas y la preocupación con el uso en ambientes de trabajo, se convierten en herramientas importantes para el enfermero, localizando lo como colaborador y compañero en la sensibilización de los individuos para la reducción de los riesgos consecuentes del uso de drogas en la vida del trabajador y en el ambiente de trabajo.This is a quantitative

  2. Questionário multidimensional para análise da imagem do enfermeiro Cuestionario multidimensional para análisis de la imagen del enfermero A multidimensional questionnaire to evaluate the image of registered nurses

    Directory of Open Access Journals (Sweden)

    Luciana Barizon Luchesi

    2010-01-01

    Full Text Available OBJETIVO: Construir um questionário multidimensional para avaliar a percepção de alunos do ensino médio frente sobre a enfermagem e validar o questionário multidimensional em conteúdo, aparência e análise semântica. MÉTODOS: Estudo quanti-qualitativo com fins de instrumentação, utilizando o referencial teórico-metodológico de Pasquali, Silva e Ribeiro-Filho que recomendam as etapas de levantamento do conceito do constructo, geração dos itens do instrumento fundamentado na literatura e aferição das propriedades psicométricas. RESULTADOS: os itens do instrumento são derivados da literatura sobre psicologia social, história da enfermagem e escolha vocacional. Após validação de conteúdo, validação aparente e análise semântica, houve a aplicação do instrumento em uma amostra de 269 alunos. CONCLUSÃO: o instrumento mostrou-se de fácil entendimento e aplicação. Além de análise diagnóstica, o instrumento poderá ser utilizado em estudos experimentais.OBJETIVO: Construir un cuestionario multidimensional para evaluar la percepción de los alumnos de la enseñanza media sobre la enfermería y validar el cuestionario multidimensional en contenido, apariencia y análisis semántico. MÉTODOS: Estudio cuantitativo y cualitativo con fines de instrumentación, utilizando el marco teórico metodológico de Pasquali, Silva y Ribeiro-Filho que recomiendan las etapas de levantamiento del concepto del constructo, generación de los ítems del instrumento fundamentado en la literatura y evaluación de las propiedades psicométricas. RESULTADOS: Los ítems del instrumento son derivados de la literatura sobre psicología social, historia de la enfermería y elección vocacional. Después de la validación de contenido, validación aparente y análisis semántico, se aplicó el instrumento en una muestra de 269 alumnos. CONCLUSIÓN: El instrumento se mostró de fácil entendimiento y aplicación. Además del análisis de diagn

  3. An isotopic perspective on growth and differentiation of Proterozoic orogenic crust: From subduction magmatism to cratonization

    Science.gov (United States)

    Johnson, Simon P.; Korhonen, Fawna J.; Kirkland, Christopher L.; Cliff, John B.; Belousova, Elena A.; Sheppard, Stephen

    2017-01-01

    The in situ chemical differentiation of continental crust ultimately leads to the long-term stability of the continents. This process, more commonly known as 'cratonization', is driven by deep crustal melting with the transfer of those melts to shallower regions resulting in a strongly chemically stratified crust, with a refractory, dehydrated lower portion overlain by a complementary enriched upper portion. Since the lower to mid portions of continental crust are rarely exposed, investigation of the cratonization process must be through indirect methods. In this study we use in situ Hf and O isotope compositions of both magmatic and inherited zircons from several felsic magmatic suites in the Capricorn Orogen of Western Australia to highlight the differentiation history (i.e. cratonization) of this portion of late Archean to Proterozoic orogenic crust. The Capricorn Orogen shows a distinct tectonomagmatic history that evolves from an active continental margin through to intracratonic reworking, ultimately leading to thermally stable crust that responds similarly to the bounding Archean Pilbara and Yilgarn Cratons. The majority of magmatic zircons from the main magmatic cycles have Hf isotopic compositions that are generally more evolved than CHUR, forming vertical arrays that extend to moderately radiogenic compositions. Complimentary O isotope data, also show a significant variation in composition. However, combined, these data define not only the source components from which the magmas were derived, but also a range of physio-chemical processes that operated during magma transport and emplacement. These data also identify a previously unknown crustal reservoir in the Capricorn Orogen.

  4. Seismic structure of a late-Archean microcontinent in the middle of the Western Australian Craton

    Science.gov (United States)

    Yuan, Huaiyu; Johnson, Simon; Dentith, Mike; Murdie, Ruth; Gessner, Klaus; Korhonen, Fawna; Bodin, Thomas

    2017-04-01

    The Capricorn Orogen recorded the Paleoproterozoic amalgamation of the Archean Pilbara and Yilgarn cratons to form the Western Australian Craton. Regional surveys involving geological mapping, geochemistry, and geophysics reveal a prolonged tectonic history in craton assembly and subsequent intracratonic reworking, which have significantly re-shaped the orogenic crust. A high-density earthquake seismology deployment targeted the Glenburgh Terrane, an exotic late-Archean to Paleoproterozoic crustal block previously inferred from distinct structural and isotopic characters in the core region of the terrane. Prominent Moho and intracrustal discontinuities are present, replicating the overall trend and depth range found in the previous high-resolution deep crustal reflection image. Significant lateral variations in the seismic signal are found across the terrane boundary, showing a relatively thin crust (40km) crust with elevated Vp/Vs ratios (>1.76) in the margin. The small Vp/Vs ratios ( 1.70) are mapped terrane-wide, indicating a felsic bulk crustal composition. Considering the available constraints from isotopic age, magnetotelluric models and absolute shear wave velocities from ambient noise tomography, the Glenburgh Terrane is interpreted as a microcontinent made in the Archean, which however may have been altered during the WAC assembly and cratonization, as well as subsequent intracratonic reworking/magmatic differentiation processes. Our results illustrate that multi-disciplinary datasets bring complementary resolution and therefore may put tighter constraints on the tectonic processes that have affected the crust.

  5. The 1000Ma reassembly of Dharwar and Bastar cratons – Evidence ...

    Indian Academy of Sciences (India)

    8

    All the Purana Basins formed in close spatial association with the stable cratons, and at present cover ... The other Proterozoic basin of the SIB is the oval shaped Cuddapah Basin, the largest among all Purana Basins, .... Sm-Nd isotope analysis from the Vinjamuru gabbro of the NKSB has yielded 2654±100. Ma whole rock ...

  6. Contrasted continental rifting via plume-craton interaction : Applications to Central East African Rift

    NARCIS (Netherlands)

    Koptev, Alexander; Burov, Evgueni; Calais, Eric; Leroy, Sylvie; Gerya, Taras; Guillou-Frottier, Laurent; Cloetingh, Sierd

    The East African Rift system (EARS) provides a unique system with the juxtaposition of two contrasting yet simultaneously formed rift branches, the eastern, magma-rich, and the western, magma-poor, on either sides of the old thick Tanzanian craton embedded in a younger lithosphere. Data on the

  7. The Amazonian Craton and its influence on past fluvial systems (Mesozoic-Cenozoic, Amazonia)

    NARCIS (Netherlands)

    Hoorn, C.; Roddaz, M.; Dino, R.; Soares, E.; Uba, C.; Ochoa-Lozano, D.; Mapes, R.; Hoorn, C.; Wesselingh, F.P.

    2010-01-01

    The Amazonian Craton is an old geological feature of Archaean/Proterozoic age that has determined the character of fluvial systems in Amazonia throughout most of its past. This situation radically changed during the Cenozoic, when uplift of the Andes reshaped the relief and drainage patterns of

  8. The geological record of base metal sulfides in the cratonic mantle: A microscale 187Os/188Os study of peridotite xenoliths from Somerset Island, Rae Craton (Canada)

    Science.gov (United States)

    Bragagni, A.; Luguet, A.; Fonseca, R. O. C.; Pearson, D. G.; Lorand, J.-P.; Nowell, G. M.; Kjarsgaard, B. A.

    2017-11-01

    We report detailed petrographic investigations along with 187Os/188Os data in Base Metal Sulfide (BMS) on four cratonic mantle xenoliths from Somerset Island (Rae Craton, Canada). The results shed light on the processes affecting the Re-Os systematics and provide time constraints on the formation and evolution of the cratonic lithospheric mantle beneath the Rae craton. When devoid of alteration, BMS grains mainly consist of pentlandite + pyrrhotite ± chalcopyrite. The relatively high BMS modal abundance of the four investigated xenoliths cannot be reconciled with the residual nature of these peridotites, but requires addition of metasomatic BMS. This is especially evident in the two peridotites with the highest bulk Pd/Ir and Pd/Pt. Metasomatic BMS likely formed during melt/fluid percolation in the Sub Continental Lithospheric Mantle (SCLM) as well as during infiltration of the host kimberlite magma, when djerfisherite crystallized around older Fe-Ni-sulfides. On the whole-rock scale, kimberlite metasomatism is visible in a subset of bulk xenoliths, which defines a Re-Os errorchron that dates the host magma emplacement. The 187Os/188Os measured in the twenty analysed BMS grains vary from 0.1084 to >0.17 and it shows no systematic variation depending on the sulfide mineralogical assemblage. The largest range in 187Os/188Os is observed in BMS grains from the two xenoliths with the highest Pd/Ir, Pd/Pt, and sulfide modal abundance. The whole-rock TRD ages of these two samples underestimate the melting age obtained from BMS, demonstrating that bulk Re-Os model ages from peridotites with clear evidence of metasomatism should be treated with caution. The TRD ages determined in BMS grains are clustered around 2.8-2.7, ∼2.2 and ∼1.9 Ga. The 2.8-2.7 Ga TRD ages document the main SCLM building event in the Rae craton, which is likely related to the formation of the local greenstone belts in a continental rift setting. The Paleoproterozoic TRD ages can be explained by

  9. Dimensionamento de pessoal de enfermagem em um hospital universitário Cálculo del personal de enfermería en un hospital universitario Nursing staff dimensioning at a university hospital

    Directory of Open Access Journals (Sweden)

    Arthur Velloso Antunes

    2003-12-01

    Full Text Available Este estudo apresenta o dimensionamento de pessoal de enfermagem realizado em um hospital universitário. Teve como objetivos: estipular o número de enfermeiros, técnicos e auxiliares para os diversos setores, definir o Índice de Segurança Técnica que reflita a realidade do Hospital, verificar a adequação de um Sistema de Classificação de Pacientes e verificar se o método utilizado para os setores de internação é adequado. Na metodologia, utilizamos uma fórmula que considera o cuidado progressivo, calculamos o Índice de Segurança Técnica, adaptamos e testamos um Sistema de Classificação de Pacientes e aplicamos um questionário para avaliar a metodologia utilizada. As conclusões foram as seguintes: o estudo nos permitiu alcançar o número de pessoal necessário para cada um dos setores do hospital, o Índice de Segurança Técnica atendeu à finalidade de cobrir as ausências, o Sistema de Classificação de Pacientes usado é adequado, exceto para dois setores, e a fórmula empregada para os setores de internação é adequada.Este estudio presenta el cálculo del personal de enfermería en un hospital universitario. Tuvo como objetivos: estipular el numero de enfermeros, técnicos y auxiliares para los diferentes sectores, definir el índice de seguridad técnica que refleje la realidad del hospital, verificar la adecuación de un sistema de clasificación de pacientes y observar si el método usado para los sectores de hospitalización es adecuado. En la metodología utilizamos una formula que lleva en cuenta el cuidado progresivo, calculamos el índice de seguridad técnica con base en las características de la institución, adaptamos y probamos un sistema de clasificación de pacientes y aplicamos un cuestionario para evaluar la metodología utilizada. Las conclusiones fueron las siguientes: el estudio nos permitió llegar a la cantidad necesaria de personal para cada uno de los sectores del hospital, el sistema de

  10. Water and Metasomatism in the Slave Cratonic Lithosphere (Canada): An FTIR Study

    Science.gov (United States)

    Kilgore, McKensie; Peslier, Anne H.; Brandon, Alan D.; Schaffer, Lillian Aurora; Pearson, D. Graham; O'Reilly, Suzanne Yvette; Kopylova, Maya G.; Griffin, William L.

    2017-01-01

    Water in the mantle influences melting, viscosity, seismic velocity, and electrical conductivity. The role played by water in the long-term stabilization of cratonic roots is currently being debated. This study focuses on water contents of mantle minerals (olivine, pyroxene and garnet) from xenoliths found in kimberlites of the Archean Slave craton. 19 mantle xenoliths from central Lac de Gras, and 10 from northern Jericho were analyzed by FTIR for water, and their equilibration depths span the several compositional layers identified beneath the region. At both locations, the shallow peridotites have lower water contents in their olivines (11-30 ppm H2O) than those from the deeper layers (28-300 ppm H2O). The driest olivines, however, are not at the base of the cratonic lithosphere (>6 GPa) as in the Kaapvaal craton. Instead, the deepest olivines are hydrous (31-72 ppm H2O at Lac de Gras and 275 ppm H2O at Jericho). Correlations of water in clinopyroxene and garnet with their other trace element contents are consistent with water being added by metasomatism by melts resembling kimberlite precursors in the mantle approx.0.35 Ga ago beneath Lac de Gras. The northern Jericho xenoliths are derived from a region of the Slave craton that is even more chemically stratified, and was affected at depth by the 1.27 Ga Mackenzie igneous events. Metasomatism at Jericho may be responsible for the particularly high olivine water contents (up to 300 ppm H2O) compared to those at Lac de Gras, which will be investigated by acquiring trace-element data on these xenoliths. These data indicate that several episodes of metasomatic rehydration occurred in the deep part of the Slave craton mantle lithosphere, with the process being more intense in the northern part beneath Jericho, likely related to a translithospheric suture serving as a channel to introduce fluids and/or melts in the northern region. Consequently, rehydration of the lithosphere does not necessarily cause cratonic root

  11. Contrasted continental rifting via plume-craton interaction: Applications to Central East African Rift

    Directory of Open Access Journals (Sweden)

    Alexander Koptev

    2016-03-01

    Full Text Available The East African Rift system (EARS provides a unique system with the juxtaposition of two contrasting yet simultaneously formed rift branches, the eastern, magma-rich, and the western, magma-poor, on either sides of the old thick Tanzanian craton embedded in a younger lithosphere. Data on the pre-rift, syn-rift and post-rift far-field volcanic and tectonic activity show that the EARS formed in the context of the interaction between a deep mantle plume and a horizontally and vertically heterogeneous lithosphere under far-field tectonic extension. We bring quantitative insights into this evolution by implementing high-resolution 3D thermo-mechanical numerical deformation models of a lithosphere of realistic rheology. The models focus on the central part of the EARS. We explore scenarios of plume-lithosphere interaction with plumes of various size and initial position rising beneath a tectonically pre-stretched lithosphere. We test the impact of the inherited rheological discontinuities (suture zones along the craton borders, of the rheological structure, of lithosphere plate thickness variations, and of physical and mechanical contrasts between the craton and the embedding lithosphere. Our experiments indicate that the ascending plume material is deflected by the cratonic keel and preferentially channeled along one of its sides, leading to the formation of a large rift zone along the eastern side of the craton, with significant magmatic activity and substantial melt amount derived from the mantle plume material. We show that the observed asymmetry of the central EARS, with coeval amagmatic (western and magmatic (eastern branches, can be explained by the splitting of warm material rising from a broad plume head whose initial position is slightly shifted to the eastern side of the craton. In that case, neither a mechanical weakness of the contact between the craton and the embedding lithosphere nor the presence of second plume are required to

  12. Estudio de los rasgos biologicos y ecologicos en poblaciones de los ordenes : Ephemeroptera, Plecoptera y Trichoptera (clase insecta), en un rio al pie del glaciar Mururata

    OpenAIRE

    Molina Arzabe, C.I.

    2004-01-01

    Actualmente está siendo utilizado el concepto de los rasgos de vida, con una nueva y mejor alternativa en la bioindicación de aguas corrientes, por lo cual este trabajo describe los principales rasgos biológicos y ecológicos de las poblaciones de insectos acuáticos más sensibles a perturbaciones, los órdenes: Ephemeroptera, Plecoptera y Trichoptera, para un río altoandino al pie del glaciar Mururata. El rasgo biológico sobre el ciclo de vida no es conocido para las especies de los órdenes men...

  13. Recuento y determinación de viabilidad de giardia spp. y Cryptosporidium spp. en aguas potables y residuales en la cuenca alta del rio Bogotá.

    Directory of Open Access Journals (Sweden)

    Marlén Andrea Alarcón

    2005-09-01

    Full Text Available Introducción. La transmisión de enfermedades de origen hídrico está relacionada con la contaminación de origen fecal en aguas residuales y potables. Estas enfermedades son causadas por la presencia de bacterias, virus y parásitos, los cuales generan altos porcentajes de morbimortalidad, especialmente, en la población infantil. Se han seleccionado Giardia spp. y Cryptosporidium spp. como organismos indicadores de contaminación de origen parasitario y su análisis es útil para evaluar la calidad del agua y determinar el riesgo sanitario. En Colombia se conoce poco sobre la presencia y la concentración de estos parásitos en aguas, razón por la cual es importante continuar su estudio. Objetivo. El objetivo de este trabajo fue evaluar la presencia de estos protozoos en cinco estaciones de muestreo de la cuenca alta del río Bogotá y en dos sistemas de potabilización de la misma área. Materiales y métodos. Las técnicas aplicadas para la determinación y el recuento de las formas quísticas fueron: floculación inorgánica para aguas residuales, filtración para aguas potables y pruebas de colorantes vitales para viabilidad. Resultados. Se confirmó la presencia de Cryptosporidium spp. en dos de las estaciones del río Bogotá y en las dos potabilizadoras. Giardia spp. se encontró en las dos potabilizadoras pero no en el río Bogotá. La viabilidad fue positiva para Cryptosporidium spp. en una muestra proveniente del río, y negativa para las muestras de agua potable. Conclusiones. Estos resultados muestran la presencia de protozoos en aguas potables y residuales lo cual puede generar riesgo sanitario para la población de dicha zona.

  14. Blastocistosis y otras infecciones por protozoos intetinales en comunidades humanas ribereñas de la cuenca del rio Valdivia, Chile Blastocystosis and other intestinal protozoan infections in human riverside communities from - Valdivia River Basin, Chile

    Directory of Open Access Journals (Sweden)

    Patricio Torres

    1992-12-01

    Full Text Available Entre marzo y octubre de 1987 se examinaron muestras coprológicas de 970 personas (20, 9% de la población pertenecientes a 209 grupos familiares de las comunidades ribereñas de la cuenca del rio Valdivia, Chile; con el propósito de determinar las prevalencias de infección por Blastocystis hominis y otros protozoos intestinales para establecer relaciones con la edad y sexo de los hospedadores, saneamiento ambiental y porcentaje de individuos infectados por grupo familiar. Un 72, 5% de las personas presentó una o más especies de protozoos intestinales. La mayor prevalencia se registró para B. hominis (61, 8%, que se incrementó con la edad del hospedador al igual que en las infecciones por Endolimax nana y Entamoeba coli. No se demostró asociación entre el sexo del hospedador y la prevalencia de infección por B. hominis y otras especies de protozoos. La prevalencia de B. hominis fue mayor en individuos que habitaban viviendas cuya disposition de excrementos era no sanitaria. Más del 60% de los integrantes de los grupos familiares presentaron infección por B. hominis en el 53, 1% de las familias encuestadas en contraposición al 2,4%-21,8% observado en infecciones por otros protozoos. El examen de 45 muestras de excrementos de cerdos, reveló infección por Blastocystis en el 22,2% de estos animales.Between March and October 1987, the prevalence of infection by Blastocystis hominis and other intestinal protozoan, their relationship with the age and sex of the hosts, and the percentage of in fected persons in family groups were determined in riverside communities of Valdivia River Basin, Chile. One or more intestinal protozoan species were determined in 72.5% of the examined persons. The prevalence was greater for B. hominis (61.8%. The prevalences of B. hominis, Endolimax nana and Entamoeba coli were greater in relation to the age of the host. The sex of the host and prevalence of infections by B. hominis and other species of

  15. Consumo alcoólico entre universitários(as da área da saúde da Universidade Federal do Rio Grande/RS: subsídios para enfermagem Consumo alcohólico entre universitarios(as del área de la salud de la Universidade Federal do Rio Grande/RS: subsidios para enfermería Alcohol consumption among university students in the health area of Federal University of Rio Grande/RS: subsidy to the nursing

    Directory of Open Access Journals (Sweden)

    Larissa Zepka Baumgarten

    2012-09-01

    Full Text Available Objetivou-se conhecer os fatores associados e as consequências do uso de bebidas alcoólicas entre universitários da área de saúde da Universidade Federal do Rio Grande/RS. A amostra foi composta por 351 estudantes do primeiro e do penúltimo anos de cada curso. Aplicou-se um questionário sociodemográfico e o AUDIT na coleta de dados. Na análise utilizaram-se testes estatísticos. Verificou-se que 202 (57,5% estudantes bebiam habitualmente; desses, 196 (97,0% tinham familiares usuários(as de álcool. Segundo o AUDIT os estudantes foram classificados em baixo risco, 147 (41,8%, e de uso problemático, 49 (14,0%. Como consequências detectaram-se apagões, coma alcoólico e acidentes automobilísticos. Constatou-se que 171(48,7% estudantes não utilizaram preservativo nas últimas relações sexuais e 37 (10,5% tiveram três a dez parceiros (as nos últimos 12 meses. Evidenciou-se a necessidade de implementação de estratégias de cunho preventivo no âmbito universitário, para detectar precocemente o potencial para uso abusivo, bem como oportunidade de tratamento aos(às que fazem uso problemático do álcool.El objetivo fue conocer los factores asociados y las consecuencias del consumo de alcohol entre los estudiantes universitarios del área de la salud de la Universidade Federal do Rio Grande/RS. La muestra fue compuesta de la participación de 351 estudiantes del primer y penúltimo año de cada curso. Se ha aplicado un cuestionario socio-demográfico y el AUDIT en la recopilación de datos. En el análisis se utilizó pruebas estadísticas. Se ha encontrado que 202 (57,5% estudiantes por lo general bebían, de eses, 196 (97,0% tenían familiares usuarios(as de alcohol. Según el AUDIT, la clasificación de 147 (41,8% estudiantes fue de bajo riesgo y 49 (14,0% de consumo problemático. Como consecuencias, fueron detectados los apagones, el coma alcohólico y los accidentes de tráfico. Se ha comprobado que 171 (48,7% estudiantes no

  16. The extent of the Cratonic keel underneath the Southern African region: A 3D image using Finite-Frequency Tomograph

    DEFF Research Database (Denmark)

    Soliman, Mohammad Youssof Ahmad; Bezada, Max; Thybo, Hans

    2010-01-01

    We have re-examined the P body wave data from the South Africa Seismic Experiment (Carlson et al, EOS 77, 1996) across the Kaapvaal and Zimbabwe cratons and the Bushveld complex. Using finite-frequency kernels, we inverted the P-wave delay times to obtain 3-D images of compressional velocity pert....... We also image significant positive and negative anomalies (±3.0%) unconnected to the cratons under the cratonic keels and in the transition zone. We are currently inverting the P wave data using different reference models, and examining the S-wave travel times....

  17. Itinerário percorrido pelas mulheres na descoberta do câncer Camino recorrido por las mujeres en la descubierta del cáncer The journey experienced by women through a cancer diagnosis

    Directory of Open Access Journals (Sweden)

    Maria Aparecida Salci

    2009-09-01

    Full Text Available Este estudo se propõe a desvelar o itinerário vivenciado pelas mulheres no processo de descoberta do diagnóstico de câncer. Como estratégia teórico-metodológica, foram utilizados o Interacionismo Simbólico e a Grounded Theory. Foram informantes do estudo 20 indivíduos 10 mulheres portadoras de câncer e seus respectivos familiares significantes. Os resultados mostram desde o momento em que elas vivenciam as primeiras percepções sobre a alteração fisiológica em seu corpo, passando pela busca de ajuda profissional, até o recebimento do diagnóstico de câncer. O itinerário apresentado permite conhecer aspectos da realidade experienciada anteriormente ao recebimento do diagnóstico e ressalta a importância de os profissionais valorizarem mais as queixas das pessoas que os procuram, percebendo que se esta procura aconteceu é porque a pessoa está preocupada. Esta atitude pode favorecer a identificação precoce do problema e, por conseguinte, garantir melhor prognóstico e qualidade de vida.Este estudio propone revelar el camino vivido por las mujeres en el proceso de descubierta del diagnóstico de cáncer. Como estrategia teórico-metodológica fueron utilizados el Interaccionismo Simbólico y la Grounded Theory. Fueron investigados durante el estudio 20 individuos 10 mujeres portadoras de cáncer y sus respectivos familiares próximos. Los resultados muestran desde el momento en que ellas notan las primeras diferencias sobre la alteración fisiológica en su cuerpo, pasando por la búsqueda de ayuda profesional hasta el recibimiento del diagnóstico de cáncer. El camino presentado permite conocer aspectos de la realidad vivida anteriormente al recibimiento del diagnóstico y resalta la importancia de que los profesionales valoren más las quejas de las personas que los buscan, percibiendo que si esta búsqueda ocurrió es porque la persona está preocupada. Esta actitud puede facilitar la identificación precoz del problema y

  18. DESCOMPOSICIÓN DE LA HOJARASCA Y SU RELACIÓN CON LOS MACROINVERTEBRADOS ACUÁTICOS DEL RIO GAIRA (SANTA MARTA – COLOMBIA

    Directory of Open Access Journals (Sweden)

    Gutierrez Moreno Luis Carlos

    2012-04-01

    Full Text Available Se evaluó la tasa de descomposición de la hojarasca, de cuatro especies nativas y tres especies exóticas, seleccionadas por su mayor frecuencia en la vegetación de la ribera del río Gaira, localizado en la Sierra Nevada de Santa Marta. Se seleccionaron cuatro tramos de muestreo a diferentes alturas. Adicionalmente, se determinó la riqueza, la abundancia y la función trófica alimenticia de los macroinvertebrados que colonizaron los sustratos artificiales que contenían la hojarasca. En el tramo medio se presentó el mayor coeficiente de descomposición de las especies nativas y exóticas (K-W=15.9; n= 23; p= 0.001 y K-W=15.5; n= 36; p= 0.0014 respectivamente. Las especies nativas presentaron la mayor tasa de descomposición (K-W= 4; n= 47; p= 0.04, siendo la especie P. longifolium en el tramo medio, la que presentó la mayor pérdida de peso en el tiempo. Se presenta una relación entre la tasa de descomposición y la conductividad y la temperatura. El ensamblaje de macroinvertebrados estuvo representado por 41 taxones, con una abundancia de 1895 individuos que aportaron una biomasa de 2.27 gramos. La estructura funcional de los macroinvertebrados asociados a la hojarasca, estuvo representada en los tramos alto, medio y bajo por los Plecopteros (Depredadores del género Anacroneuria con el 10.14%, 68.43% y 7.60% respectivamente. Los Dípteros depredadores del taxón Tanypodinae fueron dominantes en la desembocadura con 0.51%. Los resultados de este estudio permiten determinar el efecto de la introducción de especies forestales exóticas, generando una menor tasa de descomposición y una variación en la fauna de macroinvertebrados asociados.

  19. 3-D inversion of complex magnetotelluric data from an Archean-Proterozoic terrain in northeastern São Francisco Craton, Brazil

    Science.gov (United States)

    Bologna, Mauricio S.; Egbert, Gary D.; Padilha, Antonio L.; Pádua, Marcelo B.; Vitorello, Ícaro

    2017-09-01

    We present a magnetotelluric (MT) study in the northeastern part of the São Francisco Craton that encompasses an Archean-Proterozoic terrain, the Serrinha Block, breached by a rift basin developed mostly in Early Cretaceous times during the opening of the South Atlantic Ocean. Even though the MT sites are regularly spaced, the profiles have different orientations from one another, making the data distribution over the area highly uneven and therefore non-ideal for 3-D modeling. However, the data set is very complex, with dimensionality analysis indicating prevalence of 3-D geoelectric structure. Results from 3-D inversion are evaluated for robustness and potentiality for yielding tectonic information. At upper crustal depths, the resulting 3-D model is coherent with surface geology, whereas at mid and lower crustal depths more cryptic structures are revealed, likely of Palaeoproterozoic age. The most striking features in the model are several strong (∼1 Ωṡm) crustal conductors beneath the central part of the Serrinha Block, which we attribute to a Palaeoproterozoic oceanic plate subduction and arc-continent collision event involving the Rio Itapicuru Greenstone Belt and the basement of the Serrinha Block. The west-dipping geometry of these conductors provides a constraint on subduction polarity and gives support to tectonic evolutionary models proposing that the Rio Itapicuru Belt was formed in an island arc environment.

  20. Reflections on sexuality during the climacteric Reflexiones sobre la sexualidad durante la vivencia del climaterio Reflexões sobre a sexualidade durante a vivência do climatério

    Directory of Open Access Journals (Sweden)

    Roselane Gonçalves

    2009-04-01

    Full Text Available Qualitative and phenomenological study based on reports of women between 48 and 55 years old with spontaneous menopause for 12 months or more. Results evidenced five theme categories that were analyzed and interpreted based on Maurice Merleau-Ponty's theoretical-philosophical reference framework. Among the categories that emerged from reports, the theme "reflecting on sexuality" was emphasized, and is presented with a view to understanding the existential aspects of the climacteric experience, focusing on the exercise of sexuality.Se trata de un estudio cualitativo de abordaje fenomenológico, realizado a partir del relato de mujeres con edad entre 48 y 55 años que habían presentado menopausia espontánea hace 12 meses o más. Los resultados mostraron cinco categorías temáticas que fueron analizadas e interpretadas con base en el marco teórico filosófico de Maurice Merleau-Ponty. Entre las categorías que surgieron de los relatos sobresalió el tema" Reflexionando sobre la sexualidad" que será presentado con el objetivo de comprender los aspectos existenciales de la vivencia del climaterio con énfasis en la sexualidad.Estudo qualitativo de abordagem fenomenológica, realizado a partir do depoimento de mulheres entre 48 e 55 anos que haviam apresentado menopausa espontânea há 12 meses ou mais. Os resultados evidenciaram cinco categorias temáticas que foram analisadas e interpretadas à luz do referencial teórico filosófico de Maurice Merleau-Ponty. Dentre as categorias que emergiram dos depoimentos destacou-se o tema: "refletindo sobre a sexualidade", que será apresentado com o objetivo de compreender os aspectos existenciais da vivência do climatério com ênfase no exercício da sexualidade.

  1. Erodabilidad y erosión hídrica potencial en un sector de la cuenca del rio Otún - Colombia

    Directory of Open Access Journals (Sweden)

    Madero Morales Edgar Enrique

    1996-12-01

    textura, aceptación de lluvia, efecto torsional, pérdida de suelo real y con pendiente del 9%, surcamiento tienen relación con las pérdidas de suelo en lo referente a Material Erodable y a Volumen de Flujo Superficial; no pretenden cuantificar las pérdidas actuales o potenciales de un lugar, pero pueden servir como estimativos de la variabilidad del factor K en función de la labranza, del contenido de grava superficial, del estado de humedad del suelo y del tiempo. Para predecir el avance de la erosión laminaren porciones de suelo desnudo, Bergsma (1989 propuso un sistema semicuantitativo, cuyo principio consiste en determinar la frecuencia de aparición de seis rasgos micro topográficos superficiales después de cada lluvia y a partir de la última labor de preparación: peds resistentes, superficies erodadas, superficies de flujo, presurcos y surcos, depresiones y vegetación o piedras; la extensión de cada rasgo no pasa de 25 cm. La densidad mínima de observaciones demostró el valor práctico de las pruebas de erodabilidad requiriéndose no más de tres repeticiones por unidad de manejo. Hubo mayor proporción de suelos (8 de 12 con baja erodabilidad. La evolución de los rasgos micro topográficos superficiales reveló que en maíz, frijol y pasto de corte aumentaron paulatinamente las superficies de flujo y los presurcos; la tendencia en cebolla fue similar pero con incremento relativo de los surcos. Los sistemas de cultivo de frijol y pasto de corte fueron los de menor riesgo de erosión hídrica dado que permitieron poca pérdida de suelo en los terrenos más inestables; los de maíz y cebolla permitieron el mayor avance de la erosión en los suelos más estables.

  2. From Myth to Reality: The Experience of Sustainable Tourism in The Vale Encantado Community in Tijuca Forest, Rio de Janeiro, Brazil Du mythe à la réalité : l'expérience du tourisme durable dans la communauté du Vale Encantado, Forêt de Tijuca, Rio de Janeiro, Brésil Del mito a la relidad : la experiencia del turismo sostenible en la comunidad de Vale Encantado, Bosque de Tijuca, Río de Janeiro, Brasil

    Directory of Open Access Journals (Sweden)

    Otávio Alves Barros

    2011-11-01

    reforestation et à la création du Parc national de Tijuca, en 1961. À présent et grâce au projet de tourisme durable, le Vale Encantado est devenu une référence en termes de cohabitation, d’intégration et de préservation de l’environnement local, et est reconnu comme « gardien de la forêt ».Considerado uno de los más grandes bosques urbanos del mundo y el tercero de Brasil, Floresta da Tijuca (Bosque de Tijuca, situado en la ciudad de Río de Janeiro, se enfrenta al gran desafío de convivir de forma harmónica y sostenible con las 46 favelas situadas en su entorno. Una de estas comunidades, Vale Encantado, cuyo proceso de ocupación data de mediados del siglo XVIII, vivió los diversos ciclos productivos que en él se desarrollaron, pasando por la extracción de madera, explotación agrícola, ganadera y de plantas ornamentales, y extracción de granito negro. Estos ciclos productivos, en mayor o en menor grado, impactaron negativamente en el bosque nativo. Sin embargo, de manera simultánea a este proceso, la comunidad de Vale Encantado fue testigo de la implementación de esfuerzos de reconstitución y protección de este fragmento de Bosque Atlántico, mediante la reforestación y la creación del Parque Nacional da Tijuca, en 1961. Hoy, a través del proyecto de turismo sostenible y gastronomía social, Vale Encantado se ha convertido en referencia del proceso de convivencia, integración y protección del medioambiente local, pasando a ser reconocido como “guardián del bosque”.Considerada uma das maiores florestas urbanas do mundo e a terceira do Brasil, a Floresta da Tijuca, situada na cidade do Rio de Janeiro, enfrenta o grande desafio de conviver de forma harmonica e sustentável com as 46 favelas situadas em seu entorno. Uma destas comunidades, o Vale Encantado, cujo processo de ocupação data de meados do século XVIII, vivenciou os diversos ciclos produtivos que nela se desenvolveram, passando pela extração de madeira, exploração agr

  3. Undergraduate students' motivations for the consumption of legal drugs Motivaciones del estudiante universitario para el consumo de drogas legales Motivação do estudante universitário para o consumo de drogas legais

    Directory of Open Access Journals (Sweden)

    Verónica Margarita Hernández Rodríguez

    2008-08-01

    Full Text Available This qualitative research aimed at identifying conceptions held by undergraduate students regarding the term motivation, and motives leading them to the consumption of legal drugs. Data were collected through a questionnaire with four open questions, applied to 15 students of a public university in the central region of Mexico. In order to perform the data analysis, answers were classified in two categories: a Undergraduate students' conceptions regarding the term motivation and b Undergraduate students' conceptions regarding the motives for consumption. Such analysis indicated that students identify two types of motivations: external and internal. The external motivation includes family, mass media and friends; whereas internal motivation includes personal characteristics, need of belonging, curiosity, pleasure and idleness.La presente investigación cualitativa buscó identificar las concepciones que tiene el estudiante universitario sobre el término de motivación y los motivos que les llevan al consumo de drogas legales. Se realizó la recolección de datos mediante la aplicación de un cuestionario de cuatro reactivos a quince estudiantes universitarios inscritos en una universidad pública de la región centro del México. El análisis de resultados se hizo a través de la categorización de respuestas en dos categorías: a Concepciones del estudiante sobre el término motivación b Concepciones de los estudiantes sobre los motivos para el consumo. Se obtuvo como resultados que los estudiantes identifican dos tipos de motivaciones, la externa y la interna. Las motivaciones externas incluyen la familia, los medios de comunicación y los amigos, mientras que la motivación interna incluye las características personales, necesidad de pertenencia, curiosidad, placer y ociosidad.A presente pesquisa qualitativa procurou identificar a concepção do estudante universitário sobre o termo motivação, e as razões que o levam ao consumo de

  4. El saber de la partera tradicional del valle del río Cimitarra: cuidando la vida Traditional midwifery knowledge in the Cimitarra River Valley. Taking Care of life O saber da parteira tradicional do vale do Rio Cimitarra: cuidando a vida

    Directory of Open Access Journals (Sweden)

    RUIZ DE CÁRDENAS CARMEN HELENA

    2009-12-01

    Full Text Available Para la recolección y análisis de la información se utilizaron la Etnografía focalizada y la técnica de Spradley y la teoría de la diversidad y la universalidad de los cuidados culturales de Leininger se tomó como referente teórico. Su objetivo fue describir los cuidados que brindaban las parteras tradicionales a partir de creencias y prácticas en las mujeres durante el parto en la zona rural de la región del valle del río Cimitarra, Magdalena Medio. El estudio se desarrolló en el valle del río Cimitarra y la ciudad de Barrancabermeja. Participaron siete parteras tradicionales y se recolectaron los datos mediante entrevista etnográfica y observación participante entre los años 2007 y 2008. El tema central es “El saber de la partera tradicional del valle del río Cimitarra: cuidando la vida” y cinco dominios culturales: alistarse para la atención del mismo, identificar el momento del parto, ayudar a la mujer a parir, proteger al bebé después del nacimiento y proteger a la mujer después del nacimiento. Cuidar la vida se relaciona con la necesidad de “sobrevivir” a pesar de la guerra, la violencia y el abandono estatal. Las acciones de cuidado se fundan en creencias culturales, la cotidianidad del trabajo del campo, la tradición oral y la invocación divina en medio del complejo contexto ambiental, la incertidumbre del conocimiento y el miedo a problemas legales.Focalized ethnography and Spradley’s technique were used to collect and analyze information. Diversity and universality stated in Leninger’s study of culture were regarded as a theoretical reference. The objective was to describe care given by traditional midwives, using their traditional beliefs and practices, on women during delivery in the rural area of the Cimitarra river valley, Mid Magdalena river basin. It took place in the Cimitarra River and in the town Barrancabermeja, where seven traditional midwives participated. Data was collected using

  5. El saber de la partera tradicional del valle del río Cimitarra: cuidando la vida O saber da parteira tradicional do vale do Rio Cimitarra: cuidando a vida Traditional midwifery knowledge in the Cimitarra River Valley: Taking Care of life

    Directory of Open Access Journals (Sweden)

    CELMIRA LAZA VÁSQUEZ

    Full Text Available Para la recolección y análisis de la información se utilizaron la Etnografía focalizada y la técnica de Spradley y la teoría de la diversidad y la universalidad de los cuidados culturales de Leininger se tomó como referente teórico. Su objetivo fue describir los cuidados que brindaban las parteras tradicionales a partir de creencias y prácticas en las mujeres durante el parto en la zona rural de la región del valle del río Cimitarra, Magdalena Medio. El estudio se desarrolló en el valle del río Cimitarra y la ciudad de Barrancabermeja. Participaron siete parteras tradicionales y se recolectaron los datos mediante entrevista etnográfica y observación participante entre los años 2007 y 2008. El tema central es " El saber de la partera tradicional del valle del río Cimitarra: cuidando la vida" y cinco dominios culturales: alistarse para la atención del mismo, identificar el momento del parto, ayudar a la mujer a parir, proteger al bebé después del nacimiento y proteger a la mujer después del nacimiento. Cuidar la vida se relaciona con la necesidad de " sobrevivir" a pesar de la guerra, la violencia y el abandono estatal. Las acciones de cuidado se fundan en creencias culturales, la cotidianidad del trabajo del campo, la tradición oral y la invocación divina en medio del complejo contexto ambiental, la incertidumbre del conocmiento y el miedo a problemas legales.A compilação e a análise da informação estiveram baseadas no uso de etnografia focalizada e da técnica de Spradley. A teoria da diversidade e universalidade dos cuidados culturais de Leininger tomou-se como marco teórico. O objetivo do levantamento era descrever os cuidados providenciados por parteiras tradicionais, a partir das crenças e práticas, às mulheres durante opartona zona rural da região do vale do rio Cimitarra Magdalena Médio. O trabalho foi desenvolvido no vale do Rio Cimitarra e na cidade de Barrancabermeja. O estudo inclui a participação de

  6. DOTS in primary care units in the city of Rio de Janeiro, Southeastern Brazil Implementación y resultados del DOTS en unidades básicas de salud en la ciudad de Rio de Janeiro, Sureste de Brasil Implementação e resultados do DOTS em unidades básicas de saúde na cidade do Rio de Janeiro

    Directory of Open Access Journals (Sweden)

    Vanja Ferreira

    2011-02-01

    Full Text Available OBJECTIVE: To describe the implantation and the effects of directly-observed treatment short course (DOTS in primary health care units. METHODS: Interviews were held with the staff of nine municipal health care units (MHU that provided DOTS in Rio de Janeiro City, Southeastern Brazil, in 2004-2005. A dataset with records of all tuberculosis treatments beginning in 2004 in all municipal health care units was collected. Bivariate analyses and a multinomial model were applied to identify associations between treatment outcomes and demographic and treatment process variables, including being in DOTS or self-administered therapy (SAT. RESULTS: From 4,598 tuberculosis cases treated in public health units administrated by the municipality, 1,118 (24.3% were with DOTS and 3,480 (75.7% with SAT. The odds of DOTS were higher among patients with age under 50 years, tuberculosis relapse and prior history of default or treatment failure. The odds of death were 52.0% higher among patients on DOTS as compared to SAT. DOTS modality including community health workers (CHWs showed the highest treatment success rate. A reduction of 21.0% was observed in the odds of default (vs. cure among patients on DOTS as compared to patients on SAT, and a reduction of 64.0% among patients on DOTS with CHWs as compared to those without CHWs. CONCLUSIONS: Patients with a "low compliance profile" were more likely to be included in DOTS. This strategy improves the quality of care provided to tuberculosis patients, although the proposed goals were not achieved.OBJETIVO: Describir la implantación y los efectos del directly-observed treatment short course (DOTS en centros municipales de salud. MÉTODOS: Se realizaron entrevistas con profesionales de los nueve centros municipales de salud que ofrecían DOTS en Rio de Janeiro, Sureste de Brasil, en 2004-2005. Los datos de todos los centros municipales de salud de la ciudad sobre los tratamientos de tuberculosis iniciados en 2004

  7. Trace element enrichment in off-craton peridotites: comparison of off-craton Proterozoic and Pan-African mantle beneath southern Africa

    Science.gov (United States)

    le Roex, Anton; Class, Cornelia

    2014-05-01

    Trace element abundances in constituent clinopyroxene, garnet and phlogopite from off-craton mantle beneath the Proterozoic Namaqua-Natal belt (South Africa) and in clinopyroxene and amphibole from the Pan African Damara belt (Namibia) have been determined by laser ablation ICP-MS. Chondrite normalised rare earth element abundances in clinopyroxenes show a wide range of patterns from LREE depleted, through sinusoidal patterns to strongly LREE enriched. In garnets, the patterns range from strongly LREE depleted with flat HREE, through sinusoidal patterns to 'humped' sinusoidal patterns. Numerical modelling shows that the range of REE enrichment patterns can be generated via reactive porous flow mechanisms involving an alkaline silicate melt and where, in the Proterozoic mantle, there is a high fluid/solid ratio (i.e. all clinopyroxene and garnet are products of modal metasomatism and/or near fully equilibrated with a metasomatic fluid). In contrast, clinopyroxene in the Pan African mantle shows evidence for cryptic metasomatism, where enrichment of pre-existing clinopyroxene by alkaline silicate melts has occurred at the distal regions of an advancing metasomatic front. Extreme fluid/melt compositions are not required to account for the enrichment patterns Numerical modelling of primitive mantle normalised trace element abundances in clinopyroxenes show that the commonly observed strong relative depletions in Nb-Ta and Rb-Ba present in clinopyroxenes can be accounted for by crystallisation of accessory phlogopite (in Proterozoic mantle) and amphibole (in Pan African mantle) from the metasomatising melt/fluid. In contrast, strong relative depletion in Zr-Hf in some clinopyroxenes in both Proterozoic and Pan African mantle regions requires either metasomatic crystallisation of zircon, or involvement of a carbonatitic melt as metasomatic agent. Trace element enrichment patterns seen in clinopyroxene and garnet in the Proterozoic off-craton regions of southern Africa

  8. Neoarchean Subduction Recorded in the Northern Margin of the Yangtze Craton, South China

    Science.gov (United States)

    Zhang, S. B.; Zheng, Y. F.

    2016-12-01

    The Neoarchean is an important era during which plate tectonics began to operate widely on the earth and the continental crust compositions changed dramatically. However, reliable record of plate subduction has never been reported yet in the Yangtze Craton. Here we report geochemical studies on gneissic tonalite, trondhjemite and amphibolite in the Yudongzi Complex in the northern margin of the Yangtze Craton, which suggests that there is a plate subduction recorded in this area at about 2.7 Ga.The rocks in the Yudongzi Complex are gneissic granite, gneissic tonalite, amphibolite gneiss and magnetite quartzite. Most rocks are enriched in sodic. The gneissic granites show positive Eu anomalies, high (La/Yb)cn and Sr/Y ratios, low Ybcn and Y, resembling typical TTG. The amphibolite and tonalite gneiss show less fractionated REE patterns. SHRIMP zircon U-Pb dating on one gneissic trondhjemite, one amphibolite and one tonalite gave crystallization ages of 2667±21 Ma, 2701±10 Ma and 2697±9 Ma, respectively. They all recorded a metamorphic event at about 2.48 Ga. The SHRIMP zircon oxygen isotope analysis for a trondhjemite and an amphibolite gave δ18O values of 6.2±0.3‰ and 6.3±0.4‰, respectively. The oxygen isotope ratios higher than normal mantle values suggest a source experienced low temperature alteration. The laser fluoration analysis of bulk minerals gave δ18O values of 6.4-8.8‰ for zircon and 12.5-15.2‰ for quartz. The zircon Lu-Hf isotope analysis on the trondhjemite and amphibolite gave similar ɛHf(t) values of 0.08±0.48 and 0.07±0.63, respectively. Whole-rock ɛNd(t) values range from -1.5 to +1.0. These trondhjemite and tonalite can be interpreted as derivation from partial melting of subducted oceanic slab with a garnet-amphibolite residue.Considering the 2.67 Ga A-type granitic rocks at Huji in the interior of the craton, plate subduction took place in the northern edge of the Yangtze Craton. The Yudongzi trondhjemite and tonalite were

  9. Treating residual water according to the demands of its ulterior use: case of Neuquen river, Patagonia, Argentina; Optimizacion de requisitos de tratamiento de aguas residuales basado en la calidad del agua de acuerdo con el uso del cuerpo receptor: caso rio Neuquen, Patagonia, Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Polla, Gabriela Maria; Dufilho, Ana Cecilia; Horne, Federico [Universidad Nacional del Comahue (Argentina)

    2006-07-15

    A developed methodology allows making a regional pacification based on the river's water quality and their guide levels for different uses. To get this methodology it was used an optimization model that allows obtaining the best combination of town and industrial liquid treatments of the region, which can make cheaper their construction and maintenance costs. The established regional stages of economical development, were simulated with the QUAL2E model, from this model was obtained the restriction coefficients of the optimization model. More over, this model allowed to prognosticate the behavior of the principal water quality components (dissolved and biochemical demand of oxygen, nitrogen, phosphorus and others) for different proposed stages. This methodology was applied over a section of Neuquen River (Argentina) which receives urban, industrial and farming effluents of three cities Centenario (Plant 1), Cinco Saltos (Plant 2) and Parque Industrial (Plant 3). From results, it can be affirmed that under present situation, there is not contamination hazard. However, under future scenarios, advanced and secondary treatment is required to assure meeting the quality standards, particularly when river discharge approach it annual minimum. [Spanish] Se desarrollo una metodologia que permite hacer una planificacion regional basada en la calidad de agua del rio y sus niveles guias para distintos usos. Para ello se utilizo un modelo de optimizacion que permite obtener la mejor combinacion de tratamientos de liquidos municipales e industriales de la region que minimicen sus costos de construccion y mantenimiento. Los escenarios de desarrollo economico regional planteados se simularon con el modelo QUAL2E, de donde se obtuvieron los coeficientes de las restricciones del modelo de optimizacion. El modelo de simulacion permitio, ademas, pronosticar el comportamiento de los principales componentes de calidad del agua (oxigeno disuelto, demanda bioquimica de oxigeno

  10. Ações de cuidado desempenhadas pelo pai no puerpério Acciones del cuidados desempeñados por el papá durante el puerperio Actions in care carried out by the father in the puerperism

    Directory of Open Access Journals (Sweden)

    Eteniger Marcela Fernandes de Oliveira

    2009-09-01

    Full Text Available Pesquisa exploratória-descritiva, qualitativa, desenvolvida com 15 pais, de janeiro a abril de 2006, em Natal/RN. Teve por objetivo analisar as ações desenvolvidas pelo homem durante o puerpério de sua companheira. A coleta efetuou-se por entrevista semiestruturada, sendo os dados tratados por meio da técnica de análise de conteúdo e analisados à luz dos princípios do Interacionismo Simbólico. Os resultados apresentam uma temática central - ações de cuidado em ambiente doméstico - e duas categorias: cuidando da companheira e da criança; e provendo o sustento da família. Conclui-se que os depoentes interagem e participam do puerpério oferecendo conselhos que remetem à prevenção, como o estímulo à deambulação; desenvolvem atitudes de dedicação e preocupação com a saúde do filho; consideram que a licença-paternidade não atende às suas necessidades; reconhecem que a companheira e o recém-nascido requerem mais dedicação e que desempenham papel de provedor no intuito de garantir o sustento familiar.Investigación exploratoria y descriptiva, cualitativa, desarrollada con 15 padres de familia, en Natal/RN. La pesquisa analizó las acciones desarrolladas por el papá durante el puerperio de su compañera. Los datos fueron recolectados por medio de la entrevista semiestructurada, organizados por la técnica de análisis de contenido y analizados bajo los principios del Interaccionismo Simbólico. Los resultados mostraron que existe un tema central las acciones de atención yl cuidado en el ambiente doméstico - y dos categorías cuidar de la pareja y del niño, sin dejar de lado el sustento de la familia. Se concluyó que estos padres conviven durante el puerperio ofreciendo consejos que remiten a la prevención, como estimular a la mujer a hacer caminadas; desarrollan actitudes de dedicación y preocupación con la salud del hijo; consideran que el permiso de trabajo por paternidad no contempla sus necesidades

  11. Vivenciando a inexorabilidade do tempo e as suas mudanças com perdas e possibilidades: a mulher na fase do climatério Vivenciando la inexorabilidad del tiempo y sus cambios con pérdidas y posibilidades: la mujer en la fase del climaterio Living the inexorability of time and its changes with losses and possibilities: the woman in climacterium

    Directory of Open Access Journals (Sweden)

    Josefa Vieira de Lima

    2001-12-01

    Full Text Available Este estudo versa sobre a experiência da mulher na fase do climatério. O Interacionismo Simbólico e a Teoria Fundamentada nos Dados foram as abordagens teóricas e metodológicas que nortearam o estudo tendo em vista os seguintes objetivos: compreender como a experiência do climatério é definida pela mulher; quais os processos psicossociais de interação vividos pela mulher e desenvolver um modelo teórico representativo da vivência da mulher na fase do climatério. As estratégias utilizadas para a obtenção dos dados foram a observação e a entrevista. Tomamos como sujeito da investigação a mulher na faixa etária de 45 a 60 anos, perfazendo um total de 30 mulheres. Através deste estudo foi possível descobrir que a experiência do climatério pode ser constituída por dois fenômenos: REJEITANDO AS MUDANÇAS, no qual o climatério é caracterizado pela mulher como um momento de perda e BUSCANDO SUPERAR AS MUDANÇAS, que representa um momento na construção de novos conceitos, com possibilidades de renovação. A partir desses fenômenos identificamos a categoria central: VIVENCIANDO A INEXORABILIDADE DO TEMPO E SUAS MUDANÇAS COM PERDAS E POSSIBILIDADES, que é fundamental para o modelo teórico representativo da experiência da mulher na fase do climatério.Este estudio trata de la experiencia de la mujer en el período del climaterio. El Interaccionismo Simbólico y la Teoria Fundamentada en los Datos fueron los abordajes teórico y metodológico que nortearon el estudio teniendo en cuenta el alcance de los siguientes objetivos: comprender como la experiencia del climaterio es definida por la mujer; cuales son los procesos psicosociales de interacción vividos por la mujer y desenvolver un modelo teórico representativo dela vivencia de la mujer en la fase del climaterio. Las estrategias utilizadas para la obtención de los datos fueron la observación y la entrevista. Tomé como sujetos de la investigación la mujer en la

  12. Water transportation ability of flat-lying slabs in the mantle transition zone and implications for craton destruction

    Science.gov (United States)

    Wang, Zhensheng; Kusky, Timothy M.; Capitanio, Fabio A.

    2018-01-01

    Water transported by deep subduction to the mantle transition zone (MTZ) that is eventually released and migrates upwards is invoked as a likely cause for hydroweakening and cratonic lithosphere destruction. The destruction of the North China Craton (NCC) during the Mesozoic has been proposed to be related to hydroweakening. However, the source of water related to large-scale craton destruction in the NCC is poorly constrained. Some suggest that the water was mainly released from a flat-lying (or stagnating) slab in the MTZ, whereas others posit that most water was released from a previously existing strongly hydrous MTZ then perturbed by the stagnating subduction in the MTZ layer. In this study, we use numerical modeling to evaluate the water carrying ability of flat-lying slabs in the MTZ with different slab ages and water contents to simulate its maximum value and discuss its potential role on large-scale hydroweakening and craton destruction. Our results reveal that a single flat-lying slab in the MTZ cannot provide enough water for large-scale cratonic lithosphere hydroweakening and thinning. Water estimates invoked for craton destruction as experienced by the NCC can only be the result of long-term piling of multiple slabs in the MTZ or penetrating deeper into the lower mantle.

  13. MICROECONOMÍA DE LA PRODUCCIÓN DE GANADO VACUNO DE CARNE EN EL VALLE MEDIO DEL RIO SINÚ (MONTERÍA - COLOMBIA: UN ESTUDIO DE CASO

    Directory of Open Access Journals (Sweden)

    OMAR CASTILLO NUÑEZ

    2015-01-01

    Full Text Available Este artículo tiene como objetivo contrastar empíricamente aspectos de la teoría microeconómica de la producción aplicada a una unidad empresarial de ganado vacuno cebado en pie en Montería (Colombia para los años 2005-2013. Para tal fin se describe la técnica de producción utilizada, se evalúan los resultados técnicos y económicos, se modela la función de costo total, y se construye una función de oferta–precio mediante técnicas econométricas. Los resultados aportan evidencia empírica adicional acerca de que el uso de técnicas intensivas en alimentación con pasturas natura - les mejoradas, suplementos y cuidado de la salud animal, permiten obtener resultados de produc - ción y productividad física que se traducen en excedentes económicos positivos. La función de costo total mantiene una relación positiva con el nivel de producto y el precio de los insumos. El costo marginal es creciente y se intersecta con la función de costo medio mínimo en un nivel de produc - ción de 33.529 kilogramos, correspondiente a un costo mínimo de $1.410 por kilogramo. Consis - tente con la función de costo marginal creciente, la función de oferta–precio tiene pendiente positiva para señalar que los productores responden positivamente a los incentivos de precio del mercado.

  14. Variaciones en el contenido de energía en músculos de Salminus brasiliensis en diferentes estados de desenvolvimiento gonadal en el área de influencia del reservatório de Manso, Mato Grosso, Brasil

    Directory of Open Access Journals (Sweden)

    Luis A. Espínola

    2008-03-01

    Full Text Available Para que las medidas de conservación y manejo sean efectivas es necesario el entendimiento del origen y destino de la energía por las cuales compiten los organismos en los diferentes ambientes. Con la hipótesis de que existen diferencias en la energía contenida en los músculos durante el desenvolvimiento gonadal de Salminus brasiliensis (Cuvier, 1816, fueron realizadas colectas entre octubre de 2002 a septiembre de 2003, en el reservatório del río Manso. Después de la obtención de los datos biométricos, de cada individuo se tomaron muestras de la musculatura, las cuales fueron secadas a 60ºC y el contenido calórico (cal/g de peso seco determinado en una bomba calorimétrica. Los valores del factor de condición y de la Relación Gónada Somática (RGS fueron comparados con los contenidos calóricos. No fueron identificadas diferencias significativas entre los valores calóricos de machos y hembras de S. brasiliensis. Sin embargo, se pudo constatar diferencias calóricas significativas en los diferentes estados de maduración gonadal tanto en machos como en hembras. Se observaron tendencias diferentes entre los sexos cuando las gónadas de los individuos se encontraban en maduración: para las hembras, la energía aumentó, mientras que para los machos ésta se mantuvo, indicando una mayor variación energética relacionada mas con la maduración gonadal que con el proceso de migración. En ambos sexos, el estado maduro mostró mayor contenido energético en relación con los demás estados. Los valores del factor de condición, para las hembras, fueron mayores que para los machos, siendo que los mayores valores fueron constatados para hembras maduras y para machos esgotados. La RGS fue más elevado para las hembras, que para los machos en los estados maduración y maduro. Se concluye que debido a las variaciones intraespecíficas asociadas a la maduración gonadal, es importante que se tenga información sobre todos los estados del

  15. Depth of anisotropy in the North American craton from surface wave polarizations

    Science.gov (United States)

    Maupin, V.; Pettersen, O.

    2009-04-01

    Analysis of P-wave traveltimes has shown the the North American craton is characterized by a coherent pattern of anisotropy with significant dip of the fast axis in some regions. The depth distribution of the anisotropy is however little constrained by P-wave analysis, limiting the geodynamical interpretation of the model. Surface wave polarizations are very sensitive to dip of anisotropy and can provide the missing depth-constraint to the model. We present an analysis of surface wave polarizations recorded at a number of stations on the North American craton. We show that the frequency range in which we do not observe polarization anomalies implies that the dipping anisotropy is not located in the upper part of the lithosphere.

  16. Thermal erosion of cratonic lithosphere as a potential trigger for mass-extinction

    Science.gov (United States)

    Pilet, Sebastien; Guex, Jean; Muntener, Othmar; Bartolini, Annachiara; Spangenberg, Jorge; Schoene, Blair; Schaltegger, Urs

    2016-04-01

    The temporal coincidence between large igneous provinces (LIPs) and mass extinctions has led many to pose a causal relationship between the two. However, there is still no consensus on a mechanistic model that explains how magmatism leads to the turnover of terrestrial and marine plants, invertebrates and vertebrates. Here, we present a synthesis of stratigraphic constraints on the Triassic-Jurassic (T-J) and Pliensbachian-Toarcian (Pl-To) boundaries combined with geochronological data in order to establish the sequence of events that initiate two of the major mass extinctions recorded in Earth's history. This synthesis demonstrates that these biotic crises are both associated with rapid change from an initial cool period to greenhouse conditions. The initial regressive events recorded at T-J and Pl-To boundaries seem difficult to reconcile either with large initial CO2 degassing associated with plume activity or by volatile-release (CO2, CH4, Cl2) from deep sedimentary reservoirs during contact metamorphism associated to dykes and sills intrusion because massive CO2 degassing is expected to produce super greenhouse conditions. We evaluate, here, an alternative suggesting that the initial cooling could be due to gas release during the initial thermal erosion of the cratonic lithosphere due to emplacement of the CAMP and Karoo-Ferrar volcanic provinces. Petrological constraints on primary magmas indicate that the mantle is hotter and melts more extensively to produce LIP lavas than for current oceanic islands basalts. However, available data suggest that the Karoo and CAMP areas were underlain by thick lithosphere (>200 km) prior to continental break up. The presence of thick lithosphere excludes significant melting of the asthenospheric mantle without initial stage of thermal erosion of the cratonic lithosphere. This initial step of thermal erosion / thermal heating of the cratonic lithosphere is critical to understand the volatile budget associated with LIPs while

  17. Violência do cotidiano e no trabalho de enfermagem: apreensões e expectativas de alunos de um curso de graduação em Enfermagem do Rio de Janeiro Violencia del cotidiano y en el trabajo de enfermería: aprehensiones y expectativas de los estudiantes de un curso de pregrado en enfermería del Rio de Janeiro Violence of the everyday and in the nursing work: apprehensions and expectations of the students from a course of graduation in nursing of Rio de Janeiro

    Directory of Open Access Journals (Sweden)

    Marcia Tereza Luz Lisboa

    2006-04-01

    Full Text Available Pesquisa de abordagem quantitativa, teve por objetivos: identificar as expectativas dos alunos de enfermagem sobre a violência do cotidiano; descrever as apreensões dos alunos de enfermagem sobre a violência no trabalho de enfermagem. A partir da aprovação pelo Comitê de Ética em Pesquisa da Escola de Enfermagem Anna Nery da Universidade Federal do Rio de Janeiro (EEAN/UFRJ, a pesquisa foi realizada com a participação de 52 alunos do 3º período letivo do Curso de Graduação em Enfermagem e Obstetrícia da EEAN/UFRJ. Para a coleta de dados utilizou-se um questionário com 14 perguntas abertas sobre as expectativas profissionais em relação ao significado da violência; à violência no cotidiano do aluno de enfermagem; e à violência no trabalho de enfermagem. Nos resultados, 62,9% dos alunos tinham como significação da violência, a agressão física; 57,7% afirmaram que a enfermagem é uma profissão de alto risco; e as cinco expressões escolhidas pelos alunos que melhor retratam a violência no trabalho da enfermeira foram: a falta de condições de trabalho, o cliente agressivo, trabalho em locais perigosos, baixos salários e abuso sexual.Inverstigación de enfoque cuantitativo, tuvo por objetivos: identificar las expectativas de los alumnos de enfermería sobre la violencia del cotidiano; y describir las aprehensiones de ellos acerca de la violencia en el trabajo de enfermería. A partir de la aprobación por el Comité de Ética en Pesquisa de la Escuela de Enfermería Anna Nery / HESFA / Universidad Federal de Rio de Janeiro (EEAN/UFRJ Brasil, la investigación fue realizada con 52 alumnos del 3º período lectiva del Curso de Pregado en Enfermería y Obstetricia de la EEAN/UFRJ. Para la recolección de datos, fué utilizado un cuestionario con 14 preguntas abiertas respecto a las expectativas profesionales en relación al significado de la violencia; a la violencia en el cotidiano del alumno de enfermería; y a la

  18. Adoção de Alianças Estratégicas por Empresas dos Pólos Calçadistas do Vale do Rio dos Sinos-RS e de Franca-SP: um estudo exploratórioAdoption of Strategic Alliances by Shoes Industries of the Vale do Rio dos Sinos-RS and Franca-SP clusters: an exploratory studyAdopción de Alianzas Estratégicas por Empresas de los Polos Calzadistas del Vale do Rio dos Sinos-RS y de Franca-SP: un estudio exploratorio

    Directory of Open Access Journals (Sweden)

    ALMEIDA, Lauro Brito de

    2008-03-01

    descriptive research had the participation of 54 companies, being 33 from Vale do Rio dos Sinos and 21 from Franca, which answered a questionnaire with closed questions. The analysis of the data was given through descriptive statistics. Main conclusions, follow as: (1 the majority of the companies have joint activities; (2 the companies are nearer to alliances that do business than to the strategic ones; (3 alliances with competitors are inexpressive - suppliers and customers predominate; (4 the control of alliances result is insufficient; (5 trust and adequate partner are determinative factors.RESUMENLa nueva configuración ambiental de las empresas, resultado de la relativa apertura de mercado provocada por la globalización, se ha convertido en más un reto para garantizar la continuidad de los negocios. Estrategias competitivas han sido llevadas a cabo con el objetivo de superar ese desafío y, entre ellas, las alianzas estratégicas se han revelado una opción viable. En este contexto, este artículo tiene como meta investigar el grado de utilización de alianzas estratégicas por medias y grandes empresas que componen los polos calzadistas del Vale do Rio dos Sinos (RS y de Franca (SP. La pesquisa, clasificada como exploratoria y descriptiva, tuvo la participación de 54 empresas, siendo 33 del Vale do Rio dos Sinos y 21 de Franca, las cuales contestaron un cuestionario elaborado con preguntas en su mayoría cerradas. El análisis de los datos se realizó a través de la estadística descriptiva, aplicándose la frecuencia porcentual relativa, identificándose la representativa de las respuestas obtenidas frente al conjunto. Principales conclusiones: la mayoría de las empresas tiene actividades conjuntas; las empresas están más cerca de las alianzas de transacción que de las estrategias; las alianzas con los concurrentes son inexpresivas – predominan proveedores y clientes; el control de los resultados de las alianzas es insuficiente; confianza y aliado adecuado

  19. Mesoproterozoic volcanism, metallogenesis and tectonic evolution along the western margin of the Kaapvaal Craton

    OpenAIRE

    2010-01-01

    D.Phil. The western margin of the Archean Kaapvaal Craton, at its contact with the polydeformed and metamorphosed Proterozoic Namaqua Province, is host to four volcanosedimentary successions of Mesoproterozoic age (1.1-1.3 Ga) that occur in close spatial and temporal association to each other. These are the Areachap Group, the Leerkrans Formation of the Wilgenhoutsdrif Group and the two volcanosedimentary successions that comprise the Koras Group. There has been protracted debate as to the...

  20. Low temperature Phanerozoic history of the Northern Yilgarn Craton, Western Australia

    Science.gov (United States)

    Weber, U. D.; Kohn, B. P.; Gleadow, A. J. W.; Nelson, D. R.

    2005-05-01

    The Phanerozoic cooling history of the Western Australian Shield has been investigated using apatite fission track (AFT) thermochronology. AFT ages from the northern part of the Archaean Yilgarn Craton, Western Australia, primarily range between 200 and 280 Ma, with mean confined horizontal track lengths varying between 11.5 and 14.3 μm. Time-temperature modelling of the AFT data together with geological information suggest the onset of a regional cooling episode in the Late Carboniferous/Early Permian, which continued into Late Jurassic/Early Cretaceous time. Present-day heat flow measurements on the Western Australian Shield fall in the range of 40-50 mW m -2. If the present day geothermal gradient of ˜ 18 ± 2 °C km -1 is representative of average Phanerozoic gradients, then this implies a minimum of ˜ 50 °C of Late Palaeozoic to Mesozoic cooling. Assuming that cooling resulted from denudation, the data suggest the removal of at least 3 km of rock section from the northern Yilgarn Craton over this interval. The Perth Basin, located west of the Yilgarn Craton, contains up to 15 km of mostly Permian to Lower Cretaceous clastic sediment. However, published U-Pb data of detrital zircons from Permian and Lower Triassic basin strata show relatively few or no grains of Archaean age. This suggests that the recorded cooling can probably be attributed to the removal of a sedimentary cover rather than by denudation of material from the underlying craton itself. The onset of cooling is linked to tectonism related to either the waning stages of the Alice Springs Orogeny or to the early stages of Gondwana breakup.

  1. Continuous cratonic crust between the Congo and Tanzania blocks in western Uganda

    Science.gov (United States)

    Link, Klemens; Koehn, Daniel; Barth, Matthias G.; Tiberindwa, John V.; Barifaijo, Erasmus; Aanyu, Kevin; Foley, Stephen F.

    2010-10-01

    Western Uganda is a key region for understanding the development of the western branch of the East African rift system and its interaction with pre-existing cratonic lithosphere. It is also the site of the topographically anomalous Rwenzori Mountains, which attain altitudes of >5000 m within the rift. New structural and geochronological data indicate that western Uganda south and east of the Rwenzori Mountains consists of a WSW to ENE trending fold and thrust belt emplaced by thick-skinned tectonics that thrust several slices of Proterozoic and Archaean units onto the craton from the south. The presence of Archaean units within the thrust stack is supported by new Laser-ICP-MS U-Pb age determinations (2637-2584 Ma) on zircons from the Rwenzori foothills. Repetition of the Paleoproterozoic units is confirmed by mapping the internal stratigraphy where a basal quartzite can be used as marker layer, and discrete thrust units show distinct metamorphic grades. The thrust belt is partially unconformably covered by a Neoproterozoic nappe correlated with the Kibaran orogenic belt. Even though conglomerates mark the bottom of the Kibaran unit, intensive brittle fault zones and pseudotachylites disprove an autochthonous position. The composition of volcanics in the Toro-Ankole field of western Uganda can be explained by the persistence of a cratonic lithosphere root beneath the northwardly thrusted Archaean and Palaeoproterozoic rocks of westernmost Uganda. Volcanic geochemistry indicates thinning of the lithosphere from >140 km beneath Toro-Ankole to ca. 80 km beneath the Virunga volcanic field about 150 km to the south. We conclude that the western branch of the East African rift system was initiated in an area of thinner lithosphere with Palaeoproterozoic cover in the Virunga area and has propagated northwards where it now abuts against thick cratonic lithosphere covered by a thrust belt consisting of gneisses, metasediments and metavolcanics of Neoarchaean to Proterozoic

  2. Epidemiología de la difilobotriasis en la cuenca del río Valdivia, Chile Epidemiologia de difílobotriase na bacia do rio Valdivia, Chile Epidemiology of diphyllobothriasis in the Valdivia River basin, Chile

    Directory of Open Access Journals (Sweden)

    Patricio Torres

    1989-02-01

    Full Text Available Entre los meses de marzo y octubre de 1987 fueron examinados 1295 personas de seis distritos ribereños de la cuenca del río Valdivia, determinándose un 1,2% de prevalencia de infección por Diphyllobothrium en los distritos de Riñihue y Las Huellas. Además, se comprobó un 5,3% y un 9,8% de prevalencia en perros de los distritos de Riñihue y Malihue, respectivamente, pero no se observó infección en gatos y cerdos. Los parásitos recuperados después del tratamiento fueron identificados como Diphyllobothrium latum. La infección humana por D. latum en los distritos afectados se favorece por el consumo de peces ahumados o sometidos a cocción insuficiente. La investigación de 1450 peces (4 especies introducidas y 11 autóctonas capturados entre 1986-1987 en la cuenca del río Valdivia, demostró la existencia de plerocercoides de D. latum y/o Diphyllobothrium dendriticum en Salmo gairdneri y Salmo trutta, entre los peces introducidos, y en algunas especies autóctonas. La prevalencia e intensidad media en las infecciones de los peces así como el grado de agregación de las infrapoblaciones varía en los distintos sectores. Algunas especies de peces actuarían como huésped intermediario y otras como huéspedes paraténicos de Diphyllobothrium spp. en la cuenca del río Valdivia. Como medidas de control para la difilobotriasis en los distritos afectados se propone un mejoramiento de las condiciones de saneamiento básico, educación sanitaria y tratamiento de las personas infectadas.Foram examinadas 1.295 pessoas de seis localidades situadas às margens da bacia do rio Valdivia (Chile, encontrando-se uma prevalência de infecção por Diphyllobothrium igual a 1,2% em Riñihue e Las Huellas. Em cães a prevalência foi de 5,3% e e 9,8% em Riñihue e Malihue, respectivamente, não tendo sido observada infecção em gatos nem porcos. Os parasitas obtidos após tratamento foram identificados como Diphyllobothrium latum. A infecção humana

  3. Do mito à realidade : a esperiência de turismo sustentável na communidade Do Vale Encatando, Floresta de Tijuca, Rio de Janeiro, Brasil From Myth to Reality: The Experience of Sustainable in The Vale Encantado Community in Tijuca Forest, Rio de Janeiro, Brazil Du mythe à la réalité : l'expérience du tourisme durable dans la communauté du Vale Encantado, Forêt de Tijuca, Rio de Janeiro, Brésil Del mito a la relidad : la experiencia del turismo sostenible en la comunidad de Vale Encantado, Bosque de Tijuca, Río de Janeiro, Brasil

    Directory of Open Access Journals (Sweden)

    Otávio Alves Barros

    2011-11-01

    reforestation et à la création du Parc national de Tijuca, en 1961. À présent et grâce au projet de tourisme durable, le Vale Encantado est devenu une référence en termes de cohabitation, d’intégration et de préservation de l’environnement local, et est reconnu comme « gardien de la forêt ».Considerado uno de los más grandes bosques urbanos del mundo y el tercero de Brasil, Floresta da Tijuca (Bosque de Tijuca, situado en la ciudad de Río de Janeiro, se enfrenta al gran desafío de convivir de forma harmónica y sostenible con las 46 favelas situadas en su entorno. Una de estas comunidades, Vale Encantado, cuyo proceso de ocupación data de mediados del siglo XVIII, vivió los diversos ciclos productivos que en él se desarrollaron, pasando por la extracción de madera, explotación agrícola, ganadera y de plantas ornamentales, y extracción de granito negro. Estos ciclos productivos, en mayor o en menor grado, impactaron negativamente en el bosque nativo. Sin embargo, de manera simultánea a este proceso, la comunidad de Vale Encantado fue testigo de la implementación de esfuerzos de reconstitución y protección de este fragmento de Bosque Atlántico, mediante la reforestación y la creación del Parque Nacional da Tijuca, en 1961. Hoy, a través del proyecto de turismo sostenible y gastronomía social, Vale Encantado se ha convertido en referencia del proceso de convivencia, integración y protección del medioambiente local, pasando a ser reconocido como “guardián del bosque”.Considerada uma das maiores florestas urbanas do mundo e a terceira do Brasil, a Floresta da Tijuca, situada na cidade do Rio de Janeiro, enfrenta o grande desafio de conviver de forma harmonica e sustentável com as 46 favelas situadas em seu entorno. Uma destas comunidades, o Vale Encantado, cujo processo de ocupação data de meados do século XVIII, vivenciou os diversos ciclos produtivos que nela se desenvolveram, passando pela extração de madeira, exploração agr

  4. An isotopic perspective on growth and differentiation of Proterozoic orogenic crust: From subduction magmatism to cratonization

    Energy Technology Data Exchange (ETDEWEB)

    Johnson, Simon P.; Korhonen, Fawna J.; Kirkland, Christopher L.; Cliff, John B.; Belousova, Elena A.; Sheppard, Stephen

    2017-01-01

    The in situ chemical differentiation of continental crust ultimately leads to the long-term stability of the continents. This process, more commonly known as ‘cratonization’, is driven by deep crustal melting with the transfer of those melts to shallower regions resulting in a strongly chemically stratified crust, with a refractory, dehydrated lower portion overlain by a complementary enriched upper portion. Since the lower to mid portions of continental crust are rarely exposed, investigation of the cratonization process must be through indirect methods. In this study we use in situ Hf and O isotope compositions of both magmatic and inherited zircons from several felsic magmatic suites in the Capricorn Orogen of Western Australia to highlight the differentiation history (i.e. cratonization) of this portion of late Archean to Proterozoic orogenic crust. The Capricorn Orogen shows a distinct tectonomagmatic history that evolves from an active continental margin through to intracratonic reworking, ultimately leading to thermally stable crust that responds similarly to the bounding Archean Pilbara and Yilgarn Cratons.

  5. Geotectonic setting and metallogeny of the northern São Francisco craton, Bahia, Brazil

    Science.gov (United States)

    Teixeira, João Batista Guimarães; da Silva, Maria da Glória; Misi, Aroldo; Cruz, Simone Cerqueira Pereira; da Silva Sá, José Haroldo

    2010-11-01

    This paper aims at establishing a tectonic and temporal framework to characterize the metallogenic processes that contributed to the origin of the mineral provinces in the northern São Francisco Craton. Many Archean mineralizations (eg. massive sulfide zinc, lead, zinc and copper, besides magnesite-talc, iron-titanium-vanadium, iron, chromite and manganese) were generated before the assembly of the Craton. Deposits of chromite, nickel, gold and emerald were produced during the Paleoproterozoic orogenic cycle, when the Craton was amalgamated into the Atlantica paleocontinent. An extension event is recorded in the Neoproterozoic, during the breakup of Rodinia, associated with deposits of phosphorite and uranium. Kimberlite diamond and gold mineralization were generated during the Brasiliano orogenic cycle, coeval with the amalgamation of West Gondwana. A long-lasting and rather uniform crustal stress is recorded in the area during the Cambrian period. Resetting of the isotopic and magnetic systems that affected the Neoproterozoic sediments of the Irecê Basin at about 520 Ma was attributed to the regional-scale fluid migration and mineralization in the aftermath of the Brasiliano orogenic cycle.

  6. O ProUni e a conclusão do ensino superior: questões introdutórias sobre os egressos do programa na zona oeste do Rio de Janeiro El ProUni (Programa de Ayuda Universitario brasileño y la conclusión del curso superior: planteos introductorios sobre los egresados del programa en la zona oeste de Río de Janeiro PROUNI (University for All Program and the conclusion of higher education: introductory questions about the students leaving the program in the west zone of Rio de Janeiro

    Directory of Open Access Journals (Sweden)

    Daniela Patti do Amaral

    2011-03-01

    Full Text Available A análise e a avaliação de políticas implementadas por um governo envolvem fatores de diferentes naturezas, especialmente quando se focalizam políticas de inclusão social no ensino superior. Buscando analisar o Programa Universidade para Todos, iniciamos a pesquisa O ProUni e o acesso ao ensino superior: estudo introdutório sobre os usuários do programa na zona oeste do município Rio de Janeiro, que tem por objetivo geral avaliar os impactos de uma política pública em educação voltada à inclusão no ensino superior privado, através de bolsas de estudos, de populações com baixas chances de acesso ao ensino superior. No presente artigo apresentamos os dados iniciais da pesquisa coletados em uma Instituição de ensino superior no bairro de Campo Grande, zona oeste do Rio de Janeiro, que apontam para uma evasão próxima à média nacional o que nos leva a inferir, inicialmente, na eficácia do Programa e no sucesso escolar dos indivíduos beneficiados.El análisis y la evaluación de las políticas implementadas por el gobierno implican factores de diferente naturaleza, en especial cuando se centra en la educación superior. Para analizar el Programa Universidad para Todos, se inició la búsqueda ProUni y el acceso a la educación superior: estudio introductorio sobre los usuarios del programa en la zona oeste del municipio de Río de Janeiro, que tiene por objeto evaluar los impactos de las políticas públicas en materia de educación orientadas hacia la inclusión en la educación superior privada, a través de becas, de las poblaciones con menores posibilidades de acceso. Este artículo discute el protagonismo de la oferta de la enseñanza superior por las IES (instituciones de educación superior privadas y presenta los datos iniciales recogidos en una institución de educación superior del barrio de Campo Grande, zona oeste de Río de Janeiro. Su resultado señala una tasa promedio de conclusión del curso de los primeros

  7. Relato do uso de clozapina em 56 pacientes atendidos pelo Programa de Atenção à Esquizofrenia Refratária da Secretaria da Saúde e do Meio Ambiente do Estado do Rio Grande do Sul El relato del uso de clozapina en 56 pacientes atendidos por el Programa de Atención a la Esquizofrenia Refractaria de la Secretaria de Salud y Medio Ambiente del Estado de Rio Grande do Sul Clozapine use report in 56 patients seen by Clerkship of Health and Environment of the State of Rio Grande do Sul's Program of Attention to the Refractory Schizophrenia

    Directory of Open Access Journals (Sweden)

    Clarissa Severino Gama

    2004-04-01

    óticos clásicos son ampliamente usados como tratamiento, pero comunmente producen respuestas incompletas, toxicidad y efectos extrapiramidales. La clozapina fue importante adquisición en la terapia antipsicótica. Mostró legítima eficacia en 30-61% de las psicosis y baja incidencia de efectos adversos. MÉTODOS: Relato de la experiencia clínica de 56 pacientes con Esquizofrenia Refractaria incluídos en el programa de suministro gratuito de clozapina por la Secretaría de Salud y Medio Ambiente del Estado de Rio Grande do Sul en convenio con el Hospital de Clínicas de Porto Alegre. RESULTADOS: La media de los escores da Brief Psychiatric Rating Scale (BPRS fue inicialmente 77,9 (DP=16,1 y, después de noventa y tres meses de tratamiento, 41,1 (DP=16,2. Dos pacientes abandonaron el programa y uno fue excluído por agranulocitosis. Hubo cuatro internaciones. DISCUSIÓN: A pesar de su comprobada eficacia y aplicabilidad, la clozapina no está libre de efectos adversos: hipotensión ortostática, taquicardia, visión turbia, xerostomia, hipersalivación, constipación y sedación son comunes. Las alteraciones hematológicas ocurren en 0,05 a 2,8% de los casos. Aún, el alto costo restringe su uso. CONCLUSIONES: Hubo mejoría significativa y estable de los pacientes que participaron del programa. Enfermedades con mayor tiempo de evolución obtuvieron menor resultado, probablemente relacionada a alteraciones neurofisiológicas y neuroquímicas. Vale resaltar la importancia del inicio precoz del tratamiento y de la necesidad de participación del Estado, en el sentido de ofrecer soporte psicosocial y financiero para la optimización del tratamiento de estos pacientes.INTRODUCTION: Schizophrenia is a chronic severe psychiatric disease causing major psychological, social and working deficiencies. Typical neuroleptics are widely used, but often produce incomplete responses, toxicity and adverse effects on motricity. Clozapine was a significant development. It is effective in

  8. Comunidad de mariposas diurnas (Lepidoptera:Rhopalocera en un gradiente altitudinal del cañon del rio Combeima-Tolima, Colombia Butterflies Community (Lepidoptera:Rhopalocera Along an Altitudinal Gradient in Combeima River Canyon Tolima, Colombia

    Directory of Open Access Journals (Sweden)

    Calderón C. Anderson M.

    2007-08-01

    Full Text Available Se estudió la variación altitudinal de la composición, riqueza, diversidad y estructura de la comunidad de mariposas diurnas en un gradiente altitudinal en la cuenca del río Combeima (Juntas-Tolima, Colombia, desde los 1.800 m hasta los 3.000 m a lo largo del año en tres periódos de muestreo, mediante el uso de redes entomológicas y trampas VanSomeren-Rydon. Se encontraron 101 especies de mariposas distribuidas en 59
    géneros y cinco familias cuyos parámetros poblacionales variaron espacial y temporalmente, mostrando marcada zonificación altitudinal en los 1.900 m la cual es una franja
    transicional de la composición faunística y en la que a partir de ella, existe un decremento en el número de especies exclusivas para cada estación de muestreo, las cuales
    podrían considerarse como especies indicadoras de disturbio ecosistémico.Altitudinal variations in composition, richness, diversity and structure were studied in the butterflies' communities along an altitudinal gradient in Combeima River basin (Juntas-Tolima, Colombia from 1800 m until 3000 m during one year through three sampling times, using insect nets and VanSomeren-Rydon traps. 101 butterflies species were collected that were classified into 59 genera and five families. Butterflies population values changed through altitude and year season, and showed important ecological changes in 1900 m where we found a transition zone in fauna composition and where exclusive fauna decrease in each sampling station. This exclusive fauna could be named as indicator of ecological disturbances.

  9. Rotiferos y otros invertebrados en sedimentos arqueológicos de la Colección del Museo Regional Monseñor Fagnano, Rio Grande, Tierra del Fuego, Argentina

    Directory of Open Access Journals (Sweden)

    Fugassa, Martín H.

    2011-01-01

    Full Text Available El estudio de las poblaciones humanas antiguas es complejo y requiere de un enfoque interdisciplinario. La arqueología argentina está promoviendo el desarrollo de nuevas líneas de evidencias que incluyen espacios muy activos de interacción con la biología. Numerosos estudios biológicos se efectúan sobre los depósitos sedimentarios asociados al contexto arqueológico. Los sedimentos asociados a los restos humanos constituyen un recurso de información poco explorado y en general, escasamente contemplado en el diseño previo de la excavación. El presente trabajo aborda el examen de sedimentos de forámenes sacrales de esqueletos humanos pertenecientes al Museo Regional Monseñor Fagnano, Tierra del Fuego, una clase de material arqueológico poco estudiado. La recuperación de rotíferos, artrópodos y parásitos justifica el esfuerzo de muestreo sobre materiales sin asignación temporal y con escasa referencia espacial. Se puede concluir que el estudio de microfósiles presentes en este tipo de depósito permite maximizar la información obtenida del registro bioarqueológico debido a que albergan valiosa información paleoambiental, bioantropológica y tafonómica. Así, el estudio exhaustivo y no destructivo de las muestras arqueológicas resulta un punto crucial en la estrategia de investigación.

  10. Perfil dos usuários de serviços de Saúde Mental do município de Lorena - São Paulo Perfil de los usuarios de servicios de Salud Mental del municipio de Lorena - Sao Paulo Profile of users of mental health services in the city of Lorena - São Paulo

    Directory of Open Access Journals (Sweden)

    Maria Odete Pereira

    2012-01-01

    Full Text Available OBJETIVOS: Identificar o perfil dos usuários do Ambulatório de Saúde Mental e do Centro de Atenção Psicossocial de Lorena - São Paulo. MÉTODOS: Estudo exploratório descritivo com dados coletados em 5.830 prontuários dos usuários desses dois serviços de Saúde Mental. RESULTADOS:Foram analisados 5.490 prontuários no Ambulatório e 340 no Centro de Atenção Psicossocial. No Ambulatório 68% dos usuários eram mulheres e no Centro de Atenção Psicossocial, 61% eram homens. Os diagnósticos que prevaleceram no Ambulatório foram: transtornos neuróticos, relacionados ao estresse e os somatoformes, e no Centro de Atenção Psicossocial, foram os transtornos decorrentes do uso de substâncias psicoativas. O grupo de medicamentos mais prescritos no Ambulatório foi o de antidepressivos, e no Centro de Atenção Psicossocial, os antipsicóticos. CONCLUSÃO: Verificou-se que os serviços de Saúde Mental atuam de forma desarticulada com a Atenção Básica de Saúde e faz-se necessário implantar o apoio matricial nesse município.OBJETIVOS: Identificar el perfil de los usuarios del Consultorio Externo de Salud Mental y del Centro de Atención Psicosocial de Lorena - Sao Paulo. MÉTODOS: Estudio exploratorio descriptivo cuyos datos fueron recolecatos en 5.830 historias clínicas de los usuarios de esos dos servicios de Salud Mental. RESULTADOS: Se analizaron 5.490 historias clínicas em el Consultorio Externo y 340 en el Centro de Atención Psicosocial. En el Consultorio externo el 68% de los usuarios eran mujeres y en el Centro de Atención Psicosocial, el 61% eran hombres. Los diagnósticos que prevalecieron en el Consultorio Externo fueron: trastornos neuróticos, relacionados al estrés y los somatoformes, y en el centro de Atención Psicosocial, fueron los trastornos generados por el uso de sustancias psicoactivas. El grupo de medicamentos más prescritos en el Consultorio Externo fue el de los antidepresivos, y en el Centro de Atenci

  11. Espaço urbano e a mortalidade por doença isquêmica do coração em idosos no Rio de Janeiro Espacio urbano y la mortalidad por enfermedad isquémica del corazón en adultos mayores en Rio de Janeiro Urban space and mortality from ischemic heart disease in the elderly in Rio de Janeiro

    Directory of Open Access Journals (Sweden)

    Germana Périssé

    2010-04-01

    , predomina la mortalidad por enfermedades isquémicas del corazón (EIC. Estudios muestran una asociación entre el proceso de urbanización, las condiciones socioeconómicas y el cambio en el estilo de vida con la ocurrencia de EIC. OBJETIVO: Describir la distribución geográfica de la tasa de mortalidad por EIC en adultos mayores del MRJ en 2000 y su correlación con variables socioeconómicas. MÉTODOS: Estudio ecológico, con análisis espacial de la distribución de la tasa de mortalidad por EIC en adultos mayores que residían en el MRJ en el 2000, normalizada por sexo e intervalo de edades, y de sus correlaciones con variables socioeconómicas del censo demográfico. RESULTADOS: No se observaron correlaciones fuertes entre las variables socioeconómicas y la mortalidad por EIC en adultos mayores en el ámbito de los barrios. Algunas correlaciones encontradas, aunque tenues, indicaron una mayor mortalidad asociada a un mejor nivel socioeconómico. Después de la corrección de la tasa de mortalidad por EIC por medio del agregado de las causas mal definidas (CMD de fallecimiento, algunas asociaciones adquirieron el sentido de peores condiciones socioeconómicas y mayor mortalidad por EIC. Se encontró dependencia espacial para variables socioeconómicas, pero no para a mortalidad por EIC. CONCLUSIÓN: La dependencia espacial encontrada en las variables socioeconómicas muestra que el espacio urbano en el MRJ, aunque heterogéneo, posee cierta dosis de discriminación en el ámbito de los barrios. Algunas correlaciones encontradas entre EIC y variables socioeconómicas presentaron sentido opuesto al de la bibliografía, lo que puede estar en parte relacionado a las proporciones de CMD o al perfil distinto en ese intervalo de edades.BACKGROUND: Cardiovascular diseases are the leading cause of death in Brazil, especially among the elderly. In the city of Rio de Janeiro (RJC, ischemic heart disease (IHD is the predominant cause of mortality. Studies show an association

  12. Investigação sobre a formação do clero católico num seminário teológico Investigación sobre la formación del clero católico en un seminario de teologos Investigating the ecclesiastical catholic formation at the theological catholic seminary

    Directory of Open Access Journals (Sweden)

    Sílvio José Benelli

    2009-03-01

    Full Text Available Neste artigo procuramos fazer uma análise psicossocial de um seminário teológico católico onde vivem 50 seminaristas em regime de internato, na etapa final de preparação para o sacerdócio, os quais, uma vez ordenados, passarão a ocupar posições de relevância, que consistem na coordenação de comunidades paroquiais amplas. Utilizando o instrumental teórico da análise institucional, procuramos mapear os operadores institucionais subjetivadores do dispositivo pedagógico seminário. Apresentamos dados relativos à observação participante realizada no campo de investigação. Detectamos que o seminário, além dos operadores presentes no discurso oficial institucional, implementa na prática cotidiana outros procedimentos, que podem ser designados como totalitários e disciplinares, produzindo um padre de perfil clericalizado.En este artículo pretendemos hacer un analisis psicosocial de un seminário católico de teologia donde viven 50 seminaristas en régimen de internado, en la etapa final de su preparación para el sacerdocio, y que, una vez ordenados, pasarán a ocupar posiciones relevantes que consisten en la coordinación de amplias comunidades parroquiales. Utilizando el instrumental teórico del analisis institucional buscamos mapear los operadores institucionales subjetivadores del dispositivo pedagógico seminario. Presentamos datos relativos a la observación participante realizada en el campo de investigación. Detectamos que el seminário, más allá de los operadores presentes en el discurso institucional, implementa, en la práctica cotidiana, otros procedimientos que puedan ser designados como totalitários y disciplinares, produzindo un sacerdote de perfil clericalizado.We sought to execute a psychosocial analysis of a Theological Catholic Seminary where live 50 seminarians in boarding system, at the final stage of formation to priesthood; once ordained, they will be settled in relevant positions that comprise in

  13. Temporal-space of charges in land use in the Segura River Basin; Analisis espacio-temporal de los cambios de usos del suelo en la Cuenca del Rio Segura

    Energy Technology Data Exchange (ETDEWEB)

    Alonso Sarria, F.; Gomariz Castillo, F.; Canovas Garcia, F.; Moreno Brotons, J.

    2009-07-01

    Land use change is a dynamic process that affects heavily to different environmental processes. in this work, a GIS application is designed to analyse land use changes from Landsat imagery since 1976 to 2007, a period with important socioeconomic and land use changes in River Segura basin. This work describes the methodology used to obtain a yearly series of land cover maps of the Demarcation hidrografica del Segura (River Segura basin in South East Spain). In order to analyze this great amount of information for a large (more than 18,000 km{sup 2}) and heterogeneous area, a unified methodology has been developed. It has been used oa supervised classification improved by a previous not supervised classification using both spectral (4 or 6 Landsat solar spectrum bands depending on the sensor available, MSS or TM, ETM) and two textural variables. The las ones were obtained estimating the semi variogram function from the albedo and NDVI layers. having used two images from different seasons, the total number of variables included in the classification is 12 or 16 depending on the year. (Author) 7 refs.

  14. O processo de trabalho em uma unidade básica no município do Rio de Janeiro El Proceso de trabajo en una unidad básica en la ciudad del Rio de Janeiro The Process of working in a basic unit in Rio de Janeiro town

    Directory of Open Access Journals (Sweden)

    Mary Ann Menezes Freire

    2008-09-01

    Full Text Available Trata do processo de trabalho dos profissionais de saúde que atuam em uma unidade básica de saúde, em relação ao uso de tecnologias e à rede de relações que se estabelecem na produção do cuidado. Objetivos: Identificar as relações estabelecidas entre os prestadores de cuidado no espaço micropolítico de uma unidade básica; analisar os "ruídos" identificados no processo de trabalho dos profissionais. Método: Metodologia não-convencional, adaptada a um estudo qualitativo. Adotou-se um estudo de série de casos, cuja trajetória foi denominada trajetória-sentinela, e, através desta, foram detectados "ruídos" que influenciam na efetividade do cuidado. Conclusão: Foram identificados "ruídos" específicos, intra-institucionais e interpessoais. A análise destes revelou a fragilidade da rede de contratualidade estabelecida no interior dessa unidade, que está diretamente relacionada com o processo de trabalho e com a qualidade da assistência prestada.Se trata del proceso de trabajo de los profesionales de la salud que actúan en una unidad básica de la salud en las relaciones que establecen el cuidado de la producción. Objetivos: identificar las relaciones establecidas entreel equipo de asistencia en el espacio micropolítico de una unidad básica; para analizar los "ruidos" identificadas en el proceso del trabajo de los profesionales. Método: metodología no convencionales adaptados a un estudio cualitativo. Se aprobó un estudio de los casos cuya trayectoria se llama trayectoria-centinela y, a pesar de que, se detectó "ruidos" que influyeron en la efectividad de la atención. Conclusión: se identificaron aspectos específicos "ruidos", intrainstitucionales y interpersonales. El análisis de este puesto se manifiesto la fragilidad de la contratualidade neto establecido en el interior de esta unidad que está conectado directamente con la labor del proceso y con la asistencia de calidad.It shows the working process of the

  15. Prospección química y microbiológica del bosque de galería del Río Uruguay Prospecção química e microbiológica do bosque de galeria do Rio Uruguai Chemical and microbiological prospecting woodland along the Uruguay River

    Directory of Open Access Journals (Sweden)

    Stephanie Barneche

    2010-12-01

    Full Text Available La bioprospección es la búsqueda de información a partir de especies biológicas para su uso posterior en procesos de producción en diversos sectores. Ejemplos de esa información es la contenida en el material genético de todos los seres vivos, en los compuestos químicos que producen, en sus interacciones o en el conocimiento de las personas que de una manera u otra han estudiado a esos seres vivos. En este trabajo se presentan los resultados de la prospección botánica, química y microbiológica del bosque de galería del río Uruguay en la zona del rio Queguay, ecosistema con gran biodiversidad (comprende unas 200 especies y de características poco comunes en el país dado su carácter subtropical. Se estudiaron 75 extractos provenientes de 31 especies pertenecientes a quince familias cubriendo de esa forma una gran biodiversidad.A bioprospecção é a bisca de informações a partir de espécies biológicas para seu uso posterior em processos de produção em diversos setores. Exemplos dessa informação está contida no material genético de todos os seres vivos, nas substâncias químicas que produzem, nas suas interações ou n o conhecimento das pessoas que, de uma maneira ou de outra, estudam os seres vivos. Neste trabalho é apresentado os resultados da prospecção botânica, química e microbiológica do bosque de galeria do Rio Uruguai na zona do Rio Queguay, ecosistema com grande biodiversidade, com cerca de duzentas espécies, e de características pouco comum no país dado seu caráter subtropical. Foram estudados 75 extratos provenientes de 31 espécies pertencentes a quinze famílias, cobrindo, assim, uma grande biodiversidade.Bioprospecting is the search for information from biological species for later use in production processes in various sectors. Examples of this information is contained in the genetic material of all living beings in the chemicals they produce, in their interactions or the knowledge of people who

  16. Jose Sanchez Labrador y la Geologia del Paraguay Natural

    National Research Council Canada - National Science Library

    Ottone, Eduardo G

    2008-01-01

    .... En el libro segundo, que trata principalmente sobre los rios y las propiedades del agua, Sanchez Labrador refiere que los rios Parana y Uruguay eran capaces de petrificar madera y hueso, comparando...

  17. Apoio social: aspectos da validade de constructo em estudantes universitários Apoyo social: aspectos de la validez del constructo en estudiantes universitarios Social support: validity aspects of the construct in under graduation student

    Directory of Open Access Journals (Sweden)

    Daniela Sacramento Zanini

    2009-03-01

    Full Text Available Embora o conceito de apoio social venha recebendo atenção da comunidade científica, ainda não há uma medida válida para diferentes culturas e contextos. O objetivo deste artigo é reaplicar uma escala de apoio social em universitários de Goiânia. Os participantes foram 129 estudantes de quatro instituições de ensino superior. Como medida utilizou-se o Questionário de Suporte Social adaptado para a população brasileira. Os resultados apontaram boa adequação da escala, com alphas entre 0,95 e 0,76, e adequação da estrutura fatorial quando comparada com a do estudo original. Não foram identificadas diferenças significativas entre apoio social e a maioria de variáveis sociodemográficas. Não obstante, as mulheres relataram mais apoio material (p=0,01 e afetivo (p=0,01 do que os homens, e aqueles que relataram morar com alguém perceberam mais apoio emocional (p=0,00 e afetivo (p=0,03. Discute-se a necessidade de novos estudos para posteriores esclarecimentos do comportamento desta medida e construto em diferentes populações e culturas.Aunque el concepto de apoyo social haya recibido atención por la comunidad científica todavía no hay una medida validada para distintas culturas y contextos. El objetivo de este artículo es replicar una escala de apoyo social en universitarios de Goiânia. Los participantes fueran 129 estudiantes, de cuatro instituciones de enseñanza superior. Como medida se utilizó el Cuestionario de Apoyo Social adaptado para población brasileña. Los resultados apuntan buena adecuación de la escala con alphas entre 0,95 y 0,76, y adecuación de la estructura factorial cuando comparado con el estudio original. No fueran identificadas diferencias significativas entre apoyo social y la mayoría de las variables socios demográficas. Sin embargo, las mujeres relatan más apoyo material (p=0,01 y afectivo (p=0,01 que los hombres y aquellos que relataron vivir con alguien perciben más apoyo emocional (p=0

  18. A Magnetotelluric Survey of the Kaapvaal Craton and its surroundings: The SAMTEX Experiment

    Science.gov (United States)

    Jones, A. G.; Evans, R.; Garcia, X.; Hamilton, M.; Evans, S.; Fourie, S.; Mountford, A.; Spratt, J.; Chave, A. D.

    2005-12-01

    Initiated in 2003, the Southern African Magnetotelluric (MT) Experiment (SAMTEX) is being conducted by a consortium comprising academic, industry and government partners representing five countries from around the world. When completed, it will be the largest land-based MT study yet performed, and to date includes the collection of MT sounding data with broadband (~0.002 s to ~6000 s) magnetotelluric (BBMT) instruments at more than 330 sites. Long period (20 s to ~10,000 s) magnetotelluric (LMT) instruments were installed at approximately a third of the sites to enhance depth penetration. The total length of the profiles is well over 5,000 km, with a BBMT station spacing of nominally 20 km, and an LMT spacing of 60 km (every third BBMT site) and includes a wide variety of Archean and Proterozoic terrains. The survey is being conducted in order to gain insight into the electrical structure of the crust and lithospheric mantle beneath the cratons of southern Africa and their surrounding terranes, and from that knowledge to infer Archean and Proterozoic processes of formation and deformation. The main profile of the survey, traversing the Kaapvaal craton from SW-NE, is largely coincident with a seismic experiment (SASE) and it is expected that the combined results of SASE and SAMTEX, together with the superb geochemical knowledge, should complement each other and add considerably to our understanding of southern Africa. Here we present details of the experiment and preliminary models from the ~1300 km long profile collected during the first phase of the experiment across the Kaapvaal craton in South Africa.

  19. Tectonics of the junction region between the East European craton and West Arctic platform

    Science.gov (United States)

    Baluev, A. S.; Morozov, Y. A.; Terekhov, E. N.; Bayanova, T. B.; Tyupanov, S. N.

    2016-09-01

    The region of the junction and interaction between the East European Craton (EEC) and the West Arctic Craton (WAC) is regarded as a complexly built zone or assembly of both the volumetric and dividing linear tectonic elements: the Trollfjord-Rybachi-Kanin (TRK) Lineament, the pericratonic subsidence zone of the EEC, the Karpinskii Lineament, the Murmansk Block of the Fennoscandian (Baltic) Shield, and the Kolmozero-Voronya Zone, which are briefly characterized in this paper. Evidences of thrusting have been established not only in the TRK Suture Zone and on the Rybachi Peninsula, which represent a fragment of the Timanides fold-thrust belt, but also to the southwest, in the Upper Riphean and Vendian terrigenous sequences making up the Sredni Peninsula and related to the pericratonic trough of the VEC. Two phases of fold-thrust deformations with elements of left-lateral strike-slip offset pertaining to the activity and evolution of the lineament suture dividing the Sredni and Rybachi peninsulas have been recorded. The variously oriented fault-fold systems within this fault zone are evidence for multistage deformation and can be explained by an at least twostage change in the kinematics that control displacement along the fault. The disintegrated granitic massifs of the Archean crystalline basement tectonically squeezed out in the upper crust as protrusions are localized within TRK Fault Zone. Plagiogranitic bodies, which underwent superposed fault-fold deformations of both kinematic stages, are an evidence of the vigorous tectonic event that predated folding and two-stage strike-slip displacement along the TRK Fault—by thrusting of Riphean sequences from north to south toward the Archean craton. The nappe-thrust regional structure was formed at this stage; elements of it have been recognized in the Sredni, Rybachi, and Kanin peninsulas. The main stages of tectonic evolution in the junction zone between the EEC and the WAP have been revealed and substantiated.

  20. Persistent River Basin Disequilibrium in a Cratonic Landscape: Ozark Dome, USA

    Science.gov (United States)

    Beeson, H. W.; McCoy, S. W.; Keen-Zebert, A.

    2015-12-01

    Quantitative research on landscape evolution has focused on tectonically active landscapes, leaving the pace and primary drivers of topographic change in tectonically quiescent environments, which make up the majority of Earth's surface, poorly understood. We use topographic analysis and a characteristic metric of river basin geometry, χ, to test the hypothesis that river basin dynamics, including divide migration and stream capture, can cause transient pulses of incision and large gradients in erosion rate, which in turn influence the morphology of cratonic landscapes. In testing this hypothesis, we describe and interpret the disequilibrium observed in river networks draining a typical low-elevation cratonic landscape, the Ozark dome, USA and propose alternative mechanisms to climate and tectonics that generate and sustain large-scale landscape disequilibrium. The Ozark dome was uplifted in the fore-bulge of the Ouachita orogeny and lies south of the extent of glaciation and primarily north of eustatic sea-level changes. The Ozarks have not experienced significant tectonic activity since the late Paleozoic. Landscape response times predicted by stream-power river incision models would suggest that landscapes subjected to consistent, low rates of isostatic uplift should be close to steady state. Yet, rivers draining the Ozark dome appear to be in disequilibrium. Anomalous stream network topology, variable relief across the dome, cross-divide topographic asymmetry that corresponds with large cross-divide gradients in χ, and the prevalence of multiple flights of strath terraces suggest transient and non-uniform bedrock incision rates. Our results suggest that erosional competition between river basins drive much of the observed topographic asymmetry and the in-situ formation of high-elevation, low-relief surfaces on the Ozark dome. This implies that basin dynamics, rather than tectonics, lithology, or climate, may set the large-scale morphology of some cratonic

  1. Aktivismist ja sekkunisest linnaruumi / Lilia del Rio

    Index Scriptorium Estoniae

    Rio, Lilia del

    2007-01-01

    25.-26. IV Eesti Kunstiakadeemias toimunud 4. Linnauurimuse päevadest "Uurimine ja aktivism". Hanna Harrise, Giacomo Botta, Joanna Saad-Suloneni, Liisa Horelli ja Rasmus Kase ettekannetest konverentsil. Sisaldab bibliograafiat

  2. Fatores psicossociais do trabalho e transtornos mentais comuns em eletricitários Factores psicosociales del trabajo y trastornos mentales comunes en electricistas Psychosocial factors of work and mental disorders in electricians

    Directory of Open Access Journals (Sweden)

    Suerda Fortaleza de Souza

    2010-08-01

    Full Text Available OBJETIVO: Identificar aspectos psicossociais do trabalho associados a transtornos mentais comuns em trabalhadores da manutenção de equipamentos e linhas de transmissão de energia elétrica. MÉTODOS: Estudo transversal realizado com 158 trabalhadores do setor de manutenção de uma empresa de energia elétrica no Nordeste do Brasil. A variável independente principal foram os aspectos psicossociais do trabalho, medidos segundo o modelo demanda-controle (trabalho passivo, trabalho ativo, trabalho com baixa exigência e trabalho com alta exigência, e a variável dependente foi a prevalência dos transtornos mentais comuns, medida pelo Self-Reporting Questionnaire (SRQ-20. As relações entre as variáveis foram analisadas em modelos de regressão logística múltipla, considerando-se nível de significância de 5%. RESULTADOS: A prevalência de transtornos mentais comuns foi de 20,3%, variando segundo as quatro categorias do modelo demanda-controle. O grupo com trabalho de alta exigência apresentou prevalência 2,7 vezes maior em relação ao grupo com trabalho de baixa exigência, após ajuste pelas covariáveis prática de atividade física, lazer, escolaridade e apoio social. CONCLUSÕES: A prevalência de transtornos mentais comuns esteve associada a aspectos psicossociais presentes no trabalho dos eletricitários, sobretudo o trabalho com alta exigência, assim como alta demanda psicológica e baixo apoio social.OBJETIVO: Identificar aspectos psicosociales del trabajo asociados a trastornos mentales comunes en trabajadores del mantenimiento de equipos y líneas de transmisión de energía eléctrica. MÉTODOS: Estudio transversal realizado con 158 trabajadores del sector de mantenimiento de una empresa de energía eléctrica en el Noreste de Brasil. Las variables independientes principales fueron los aspectos psicosociales del trabajo, medidos según el modelo demanda- control (trabajo pasivo, trabajo activo, trabajo con baja exigencia y

  3. Petrology of the anorogenic, oxidised Jamon and Musa granites, Amazonian Craton: implications for the genesis of Proterozoic A-type granites

    Science.gov (United States)

    Dall'Agnol, Roberto; Rämö, O. Tapani; de Magalhães, Marilia Sacramento; Macambira, Moacir José Buenano

    1999-03-01

    The 1.88 Ga Jamon and Musa granites are magnetite-bearing anorogenic, A-type granites of Paleoproterozoic age. They intrude the Archaean rocks of the Rio Maria Granite-Greenstone Terrain in the eastern part of the Amazonian Craton in northern Brazil. A suite of biotite±amphibole monzogranite to syenogranite, with associated dacite porphyry (DP) and granite porphyry (GP) dykes, dominates in these subalkaline granites that vary from metaluminous to peraluminous and show high FeO/(FeO+MgO) and K 2O/Na 2O. In spite of their broad geochemical similarities, the Jamon and Musa granites show some significant differences in their REE patterns and in the behaviour of Y. The Jamon granites are related by fractional crystallisation of plagioclase, potassium feldspar, quartz, biotite, magnetite±amphibole±apatite±ilmenite. Geochemical modelling and Nd isotopic data indicate that the Archaean granodiorites, trondhjemites and tonalites of the Rio Maria region are not the source of the Jamon Granite and associated dyke magmas. Archaean quartz diorites, differentiated from the mantle at least 1000 m.y. before the emplacement of the granites, have a composition adequate to generate DP and the hornblende-biotite monzogranite magmas by different degrees of partial melting. A larger extent of amphibole fractionation during the evolution of the Musa pluton can explain some of the observed differences between it and the Jamon pluton. The studied granites crystallised at relatively high fO 2 and are anorogenic magnetite-series granites. In this aspect, as well as concerning geochemical characteristics, they display many affinities with the Proterozoic A-type granites of south-western United States. The Jamon and Musa granites differ from the anorthosite-mangerite-charnockite-rapakivi granite suites of north-eastern Canada and from the reduced rapakivi granites of the Fennoscandian Shield in several aspects, probably because of different magmatic sources.

  4. Geochemistry of the Madawara Igneous Complex, Bundelkhand Craton, Central India: Implications for PGE Metallogeny

    OpenAIRE

    Manavalan Satyanarayanan; Singh Surya Prakash; Balaram Vysetti; Niranjan Mohanty

    2015-01-01

    The southern part of the Bundelkhand craton contains a series of a E-W trending mafic and ultramafic rocks, about 40 km in length and 2–4 km wide, that occur as intrusions within the Bundelkhand Gneissic Complex (BnGC). They are confined between the Madawara- Karitoran and Sonrai-Girar shear zones. Dunite, harzburgite, lherzolite and websterite are the commonly occurring ultramafic rocks that have high MgO, Ni, Cr, PGE and low Al2O3, CaO, K2O, TiO2 and V contents, and ...

  5. EARLY STAGE OF THE CENTRAL ASIAN OROGENIC BELT BUILDING: EVIDENCES FROM THE SOUTHERN SIBERIAN CRATON

    OpenAIRE

    D. P. Gladkochub; T. V. Donskaya; Shihong Zhang; S. A. Pisarevsky; A. M. Stanevich; A. M. Mazukabzov; Z. L. Motova

    2017-01-01

    The origin of the Central-Asian Orogenic Belt (CAOB), especially of its northern segment nearby the southern margin of the Siberian craton (SC) is directly related to development and closure of the Paleo-Asian Ocean (PAO). Signatures of early stages of the PAO evolution are recorded in the Late Precambrian sedimentary successions of the Sayan-Baikal-Patom Belt (SBPB) on the southern edge of SC. These successions are spread over 2000 km and can be traced along this edge from north-west (Sayan ...

  6. The 3.1 Ga Nuggihalli chromite deposits, Western Dhawar craton (India)

    DEFF Research Database (Denmark)

    Mukherjee, Ria; Mondal, Sisir K.; Frei, Robert

    2012-01-01

    The Nuggihalli greenstone belt is part of the older greenstone belts (3.4 - 3.0 Ga) in the Western Dharwar Craton, southern India. This greenstone sequence consists of conformable metavolcanic and metasedimentary supracrustal rock assemblages that belong to the Sargur Group. Sill-like ultramafic...... of aggregation and breakup of supercontinents. The 3.1 Ga chromite deposits of the Nuggihalli greenstone belt are part of the global komatiitic surge and are perhaps related to the amalgamation stage of the supercontinent 'Ur' in the southern hemisphere, which is believed to have been stable at ˜ 3.0 Ga....

  7. Elaboração de prontuário do residente em uma instituição de longa permanência para idosos Elaboración de la ficha del residente en una institución de larga permanencia para ancianos Development of a medical record for residents in a long-stay institution for the elderly

    Directory of Open Access Journals (Sweden)

    Silvana Sidney Costa Santos

    2010-01-01

    Full Text Available OBJETIVO: Elaborar o prontuário do residente em uma instituição de longa permanência para idosos (ILPI no Estado do Rio Grande do Sul. MÉTODOS: Trata-se de pesquisa-ação, realizada em uma ILPI, no Rio Grande do Sul/Brasil. Participaram dois pesquisadores e 14 trabalhadores: um enfermeiro, um médico, uma nutricionista, uma assistente social, quatro técnicas de enfermagem, duas cuidadoras e quatro administradores. Foram utilizadas as reuniões grupais com os participantes da pesquisa, durante as quais foram refletidos/discutidos quatro temas: finalidade do prontuário; composição do prontuário; contribuições do prontuário à ILPI; sugestões a respeito do prontuário. RESULTADOS: O prontuário do residente foi elaborado conjuntamente entre pesquisadores e trabalhadores da ILPI, atendendo às necessidades contextuais, sendo, posteriormente, implantado. Ficou composto pelos: dados pessoais do idoso; anamnese médica; evolução da equipe multiprofissional; prescrição médica e anotação da técnica de enfermagem; sistematização da assistência de enfermagem; avaliações cognitiva, afetiva, funcional e social. CONCLUSÃO: O prontuário elaborado trouxe melhor sistematização do cuidado para os trabalhadores e contribuição para melhoria da assistência aos idosos.OBJETIVO: Elaborar la ficha médica del residente en una Institución de Larga Permanencia para Ancianos (ILPA en el Estado de Rio Grande do Sul. MÉTODOS: Se trata de investigación-acción, realizada en una ILPA, no estado de Rio Grande do Sul, en Brasil. Participaron dos investigadores y 14 trabajadores (un enfermero, un médico, una nutricionista, una asistente social, cuatro técnicas de enfermería, dos cuidadoras y cuatro administradores. Fueron utilizadas las reuniones grupales con los participantes de la investigación, durante las cuales se hicieron reflexiones y discusiones sobre cuatro temas: 1 finalidad de la ficha; 2 composición de la ficha; 3

  8. Os elementos simbólicos do monumento a Anna Nery no Rio de Janeiro, Brasil Los elementos del monumento simbólico a Anna Nery en Rio de Janeiro, Brasil The symbolic elements in the Anna Nery monument in Rio de Janeiro, Brazil

    Directory of Open Access Journals (Sweden)

    Fernando Porto

    2011-12-01

    Full Text Available O objetivo do estudo foi analisar os elementos simbólicos da estátua e placas do monumento em tributo a homenageada, pela Cruz Vermelha Brasileira, como efeito simbólico para a sociedade. A análise foi documental, principalmente, mediante registros da imprensa institucional e imagens, as quais foram interpretadas, por meio das noções de representação objetal e hexis corporal. Os resultados evidenciaram que as representações objetais ostentadas na estátua de Anna Nery careceram de representação de heroína articulada a sua hexis corporal, o que conduziu a interpretação do monumento - estátua e quatro placas narrativas - como homenagem a mulher brasileira.El objetivo era examinar los elementos simbólicos de la placa de la estatua y el monumento en honor de la homenajeada, la Cruz Roja Brasileña, como el efecto simbólico en la sociedad. El análisis documental ha sido principalmente a través de los registros institucionales de prensa e imágenes, que fueron interpretadas por medio de las nociones de representación y el cuerpo objeto hexis. Los resultados evidenciaron que las representaciones objetales ostentadas en la estatua de Anna Nery carecían de representación de heroína articulada a sua hexis corporal, lo que condujo a la interpretación del monumento - estatua y cuatro placas narrativas - como homenaje a la mujer brasileña.The objective of this study was to examine the symbolic elements of the statue and memorial plaques in honor of Anna Nery offered by the Brazilian Red Cross, as a symbolic effect on society. The documentary analysis was performed mainly through institutional press records and images, which were interpreted by means of the notions of object representation and object bodyly hexis. Results showed that the object representations in the statue of Anna Nery lacked a representation of her articulated to her bodyly hexis, which led to the interpretation of the monument - both the statue and the four

  9. Análise espacial da dengue e o contexto socioeconômico no município do Rio de Janeiro, RJ Análisis espacial del dengue y el contexto socioeconómico en el municipio de Rio de Janeiro, Sureste de Brasil Spatial analysis of dengue and the socioeconomic context of the city of Rio de Janeiro (Southeastern Brazil

    Directory of Open Access Journals (Sweden)

    Andréa Sobral de Almeida

    2009-08-01

    entre las semanas epidemiológicas: 48ª de 2001 a 20ª de 2002. La ocurrencia de dengue fue correlacionada con variables socioeconómicas utilizándose el coeficiente de correlación de Pearson. Se utilizó el Índice de Moran global y local para evaluar la autocorrelación espacial del dengue y de las variables correlacionadas significativamente con la enfermedad. Fueron usados el modelo de regresión lineal múltiple y el modelo espacial condicional auto-regresivo para analizar la relación entre dengue y contexto socioeconómico. RESULTADOS: Las urbanizaciones de la zona oeste del municipio presentaron elevadas tasas de incidencia promedio de dengue. Presentaron correlación significativa las variables: porcentaje de domicilios ligados a la red sanitaria general, domicilios con lavadora de ropas y densidad poblacional por área urbana. El índice de autocorrelación espacial Moran reveló dependencia espacial entre el dengue y variables seleccionadas. Los modelos utilizados apuntaron el porcentaje de domicilios ligados a la red sanitaria general como única variable asociada significativamente a la enfermedad. Los residuos de ambos modelos revelaron autocorrelación espacial significativa, con índice de Moran positivo (pOBJECTIVE: To analyze the dengue epidemic in relation to the socioeconomic context according to geographical areas. METHODS: An ecological study was conducted in the municipality of Rio de Janeiro (Southeastern Brazil, in areas delimited as neighborhoods, based on information about notified dengue cases concerning residents in the municipality. The average incidence rate of dengue was calculated between the epidemiological weeks: 48th of 2001 and 20th of 2002. The occurrence of dengue was correlated with socioeconomic variables through Pearsons' correlation coefficient. Moran's global and local indexes were used to assess the spatial auto-correlation between dengue and the variables that significantly correlated with the disease. The multiple linear

  10. Evaluation and diagnosis of the cathodic protection of ducts in the left margin of the Tonala River of the Superintendencia General de Ductos Minatitlan; Evaluacion y diagnostico de la proteccion catodica en la margen izquierda del Rio Tonala de la Superintendencia General de Ductos Minatitlan

    Energy Technology Data Exchange (ETDEWEB)

    Gonzalez N, Miguel A; Malo T, Jose M; Munoz Ledo C, Ramon; Uruchurtu C, Jorge; Castrejon G, Rafael [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico); Sanchez G, Luis; Algarra M, Raul; Abreu L, Emilio [Gerencia de Mantenimiento, Pemex (Mexico)

    2003-07-01

    The present study contains the measurements obtained as a part of the evaluation of the protection system of ducts located in the left margin of the Tonal River, made by the Gerencia de Materiales y Procesos Quimicos of the Instituto de Investigaciones Electricas (IIE) during the last trimester of year 2001. Also, the measurements of potential in conditions of instantaneous ignition and extinguished in measuring posts of the duct in Rights of Way (DDV) Tonala-Nudo Teapa 23 are studied, in order to determine the real protection level reached by the cathodic protection system, the possible unprotected zones and the possible corrective measures that lead to a safe operation of the ducts. [Spanish] El presente estudio contiene las mediciones obtenidas como parte de la evaluacion del sistema de proteccion de los ductos ubicados en la margen izquierda del rio Tonala, realizadas por la Gerencia de Materiales y Procesos Quimicos del Instituto de Investigaciones Electricas (IIE) durante el ultimo trimestre del ano 2001. Asimismo, se tratan las mediciones de potencial en condiciones de encendido y apagado instantaneo en postes de medicion del ducto en los Derechos De Via (DDV) Tonala-Nudo Teapa 23, con el proposito de determinar el nivel real de proteccion alcanzado por el sistema de proteccion catodica, las posibles zonas desprotegidas y las posibles medidas correctivas que conduzcan a una operacion segura de los ductos.

  11. Avaliação do atendimento anestésico da criança e do adolescente em um hospital universitário Evaluación del servicio anestésico del niño y del adolescente en un hospital universitario Evaluation of the anesthetic management of children and adolescents in a teaching hospital

    Directory of Open Access Journals (Sweden)

    Andressa Simões Aguiar

    2005-08-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Qualidade em anestesia e na satisfação dos pacientes têm tido acentuado destaque. O objetivo foi avaliar o atendimento anestésico de crianças e adolescentes, entrevistando seus responsáveis. MÉTODO: Foram entrevistados 230 responsáveis por crianças e adolescentes submetidos à anestesia no período compreendido entre abril e dezembro de 2003. Realizou-se entrevista na visita pós-operatória através de questionário com quatro itens: identificação das crianças e de adolescentes e seus responsáveis (item 1; esclarecimentos na visita pré-anestésica (item 2, quanto à anestesia (item 3 e à recuperação pós-anestésica (SRPA (item 4, determinando-se quem dera as informações aos entrevistados e se houvera complicação no pós-anestésico. O responsável atribuiu nota de 0 a 10 ao Serviço de Anestesiologia. RESULTADOS: A pesquisa foi respondida pela mãe em 189 (82,2% casos. A maioria dos entrevistados, 114 (75,6%, tinha entre 20 e 39 anos, era casada (148 a 64,3% e 140 (60,9% não tinham ocupação. Para 89%, o anestesiologista se identificou; para 37% e 77,4%, esclareceu sobre importância e tempo do jejum; 82%, sobre anemia; 90%, alergia; 46,8%, importância da SRPA; 42,2%, tempo de permanência; 72,9%, estado de saúde de sua criança. Não houve apreensões para 49%, 58% e 58%, respectivamente, no pré, intra e pós-anestésico. Gostariam de ter estado com sua criança/adolescente na chegada à SRPA 78,9%. Foram relacionadas preocupações no período pré, intra e pós-anestésico com o sexo e a idade do paciente - não ter tido nenhuma preocupação - maioria dos entrevistados - e com a escolaridade do entrevistado - quanto mais completa, menor foi o número e a variedade das preocupações relatadas. As notas atribuídas ao Serviço de Anestesiologia tiveram maior freqüência entre 7 e 10 (97,4%. CONCLUSÕES: Considera-se que o Serviço de Anestesiologia desenvolve bom trabalho, apesar de

  12. The extent of the Cratonic keel underneath the Southern African region: A 3D image using Finite-Frequency Tomography

    Science.gov (United States)

    Youssof, M.; Bezada, M.; Thybo, H.; Levander, A.

    2010-12-01

    We have re-examined the P body wave data from the South Africa Seismic Experiment (Carlson et al, EOS 77, 1996) across the Kaapvaal and Zimbabwe cratons and the Bushveld complex. Using finite-frequency kernels, we inverted the P-wave delay times to obtain 3-D images of compressional velocity perturbations in the mantle beneath the Southern African cratons to depths as great as the bottom of the transition zone. We utilized P-wave cross-correlation arrival times at three different frequency bands 1, 0.5 and 0.25 Hz. All P-wave arrivals were hand-processed. Crustal corrections were calculated using a crustal model we derived from PdS receiver functions using H-K analysis (Zhu and Kanamori, J. Geophys. Res. 105, 2000), and varied with azimuth. We chose damping for the inversion by examining the model norm-data misfit L curve. Checkerboard resolution tests showed good model recovery for 8°x8° anomalies with Vp variations of ±1.5%; 4°X4° checkerboards showed moderately good recovery. To try to isolate the depth extent of anomalies in the model we ran two suites of squeezing tests: 1) We reduced the maximum depth of the model from 1000 to 700 to 410 km. 2) For a 1000 km deep model we increased the damping parameter in the deeper layers progressively and examined the rms misfit and the imaged structure. Visual inspection of the tomographic images produced from these inversions showed that the lateral distribution of structures remained unchanged as the depth of the model was reduced and deep structures persist even with large damping, but with the rms error changing significantly. This indicates to us that the deeper structures are real. We have obtained a new P-wave tomography model showing the depth extent of the cratonic keel. We can distinguish the lateral and the vertical extent in Vp variations between the Archean and modified regions such as the Bushveld complex, and the mobile belts surrounding the cratons. The high velocity (+1.0%) cratonic roots extend to

  13. Manuseio peri-operatório do paciente em uso de amiodarona Manoseo peri-operatorio del paciente en uso de amiodarona Peri-operative management of amiodarone patients

    Directory of Open Access Journals (Sweden)

    Gilson Ramos

    2004-08-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A amiodarona é um antidisrítmico bastante eficaz e indicado no tratamento de disritmias ventriculares e supraventriculares, motivo pelo qual vem sendo extensamente administrada na prática clínica. Entretanto, seu uso crônico pode estar associado com sérios efeitos colaterais, que podem ser agravados por atos anestésico-cirúrgicos, aumentando o risco dos procedimentos. O presente estudo objetiva revisar os principais efeitos da amiodarona e associá-los à prática clínica do anestesiologista. CONTEÚDO: Tratou-se das principais propriedades da amiodarona, seu uso clínico, bem como os mais importantes efeitos adversos que podem aumentar o risco cirúrgico dos pacientes em uso desse antidisrítmico. CONCLUSÕES: A amiodarona, apesar de habitualmente segura e eficiente, pode apresentar efeitos adversos exacerbados, notadamente para o aparelho cardiovascular, durante procedimentos anestésico-cirúrgicos. Isso se deve possivelmente às interações entre esse fármaco e agentes anestésicos, associados principalmente à anestesia geral. Há relatos de bradicardias graves e resistentes à terapêutica, bem como bloqueio atrioventricular (BAV em graus variados. O paciente deve ser rigorosamente monitorizado, especialmente nos procedimentos de grande porte, e o anestesiologista deve estar amparado no peri-operatório com drogas vasoativas (isoproterenol e marcapasso cardíaco artificial temporário, que podem ser fundamentais durante o procedimento.JUSTIFICATIVA Y OBJETIVOS: La amiodarona es un antidisrítmico bastante eficaz y indicado en el tratamiento de disritmias ventriculares y supraventriculares, motivo por el cual viene siendo extensamente administrada en la práctica clínica. Entretanto, su uso crónico puede estar asociado con serios efectos colaterales, que pueden ser agravados por actos anestésico-cirúgicos, aumentando el riesgo de los procedimientos. El presente estudio objetiva revisar los

  14. Tradução e validação para a língua portuguesa do questionário de planeamento da alta (PREPARED Traducción y validación a la lengua portuguesa del cuestionario de planeamiento del alta (PREPARED Translation and validation for the Portuguese language version of the discharge planning questionnaire (PREPARED

    Directory of Open Access Journals (Sweden)

    Pedro L. Ferreira

    2011-12-01

    Full Text Available Os aspetos relacionados com o planeamento da alta têm vindo a ser abordados ultimamente, no sentido de identificar quais os fatores que o influenciam e que determinam a sua efetividade, possibilitando a continuidade de cuidados, a recuperação dos doentes e a sua reintegração na comunidade. A presente investigação descritivo-correlacional tem como objetivo a tradução e validação da versão portuguesa do Questionário PREPARED. A amostra dos doentes foi constituída por 129 indivíduos submetidos a um internamento cirúrgico, num mínimo de 3 dias e com alta hospitalar. A amostra dos cuidadores foi constituída por 118 cuidadores principais. Este estudo disponibilizou para a língua portuguesa o instrumento de avaliação PREPARED, versão doente e cuidador, oferecendo uma estrutura válida para obter informação em contexto comunitário, relativa à perceção da qualidade das atividades que constituem o processo de planeamento da alta.Los aspectos relacionados con el planeamiento del alta han sido últimamente abordados, con el fin de identificar los factores que en él influyen y que determinan su efectividad, posibilitando la continuidad de los cuidados, la recuperación de los pacientes y su reintegración en la comunidad. La presente investigación descritivo-correlacional tiene por objetivo traducir y validar la versión portuguesa del Cuestionario PREPARED. La muestra de los pacientes estuvo constituida por 129 individuos sometidos a un internamiento quirúrgico, con un mínimo de 3 días y con alta hospitalaria. La muestra de los cuidadores estuvo constituida por 118 cuidadores principales. Este estudio puso a disposición en lengua portuguesa el instrumento de evaluación PREPARED, en su versión para el paciente y cuidador, ofreciendo una estructura válida para obtener información en contexto comunitario, relativa a la percepción de la calidad de las actividades que constituyen el proceso de planeamiento del alta

  15. Identifying the Transition Zone Between East and West Dharwar Craton by Seismic Imaging

    Science.gov (United States)

    Ashish; Parvez, Imtiyaz A.

    2018-01-01

    The data from 12 temporary broadband seismic stations operated across east-west corridor in Dharwar region of Indian Peninsula along with ten other seismic stations operated by CSIR National Geophysical Research Institute (NGRI) in the region have been analysed that provide high-resolution image of southern Dharwar crust. Crust along the corridor is imaged by receiver function H-k stacking, common conversion point stacking using data from 22 sites in combination with joint inversion modeling of receiver functions and Rayleigh wave group velocity dispersion curves. The velocity image reveals thinner crust (36-38 km) except one site (coinciding with Cuddapah basin on the surface) in East Dharwar Craton (EDC), while crust beneath the West Dharwar Craton (WDC) is thicker (46-50 km). This study also observed a transition zone between EDC and WDC starting west of Closepet granite to the east of Chitradurga Schist Belt (CSB), which shows diffused Moho with a thickness of 40-44 km. Chitradurga Schist Belt is identified as the contact between Mesoarchean (WDC) and Neoarchean (EDC) crustal blocks. The lowermost part of the crust (V_s > 4.0) is thin (2-6 km) beneath EDC, intermediate (6-8 km) beneath transition zone and thicker (14-30 km) beneath WDC across the profile.

  16. On the Origin of High Shear Wave Velocities in the Deep Roots of Cratons

    Science.gov (United States)

    Zeng, L.; Duncan, M. S.; Garber, J. M.; Hernandez, J. A.; Maurya, S.; Zhang, H.; Faul, U.; McCammon, C. A.; Montagner, J. P.; Moresi, L. N.; Romanowicz, B. A.; Rudnick, R. L.; Stixrude, L. P.

    2016-12-01

    Some seismic models derived from tomographic studies indicate very high shear wave velocities around 150 km depth, which cannot be explained by standard cratonic peridotite compositions derived from kimberlites, even under the assumption of very cold geotherms (i.e. 28mW/m3 surface heat flux). We present the results of a multi-disciplinary study conducted at the CIDER Summer 2016 program in Santa Barbara (CA), in which we have reviewed various geophysical and petrological constraints on the nature of cratonic roots (seismic velocities, electrical conductivity, gravity, lithologies) and explored a range of possible solutions. We find that matching the high shear wave velocities requires a large proportion of eclogite that is not matched by observed eclogite proportions in kimberlite samples. The high shear velocity of diamond makes it a viable candidate to account for such high velocities, in a proportion that is compatible with the global carbon budget. Our most recent results will be presented as well as suggestions for possible mechanisms for diamond formation and emplacement.

  17. Les organismes du Précambrien terminal du craton ouest africain

    Directory of Open Access Journals (Sweden)

    E. Eboureau

    1983-12-01

    Full Text Available THE ORGANISMS OF THE TERMINAL PRECAMBRIAN OF THE WESTERN AFRICAN CRATON The terminal Precamhrian (Lipalian of the western African Craton, in the Adrar of Mauritania, has provided, especially in the Guelb er Richát, many organisms with an archaic structure, often very simple. It concerns some coccoides, often grouped in more or less complex spheroides according to an evolutionary pattern that could be accurately established. The understanding of fossil forms from the Precambrian is, to a great extent, the result of an interpretation made of an included ‘black spot', which one adopted for the emissions of substance produced by these forms. Compared to the present species, the Precambrian organisms recall the coccoid Bacteria and the Cyanophyceae. These microorganisms are oolithes in origin and are by no means mineral, since they contain stain-sensitive glucides with Schiff’s reagent following the action of periodic acid. These forms, usually spherical, are classified amongst the Oncolithes. These organisms are also responsible for the massive calcareous or dolomitic reefs reaching considerable thickness and containing some known stromatolites in many parts of the world. Stromatolites are Conophyton. Collenia . . . They are spherical, lamellate or columnar. These reef formations of Africa reach a thickness of 3 000 m in the Adoudounian of Collenia of the Anti-Atlas, of 600 m in the Zemmour, of 150 m in the Adrar of Mauritania, of 100 m in the cliff of Hank in the north of the Taoudeni Basin.

  18. Organic matter in the Neoproterozoic cap carbonate from the Amazonian Craton, Brazil

    Science.gov (United States)

    Sousa Júnior, Gustavo R.; Nogueira, Afonso C. R.; Santos Neto, Eugênio V.; Moura, Candido A. V.; Araújo, Bruno Q.; Reis, Francisco de A. M.

    2016-12-01

    Bitumen found in Neoproterozoic carbonates from the southern Amazonian Craton, Brazil, represents a great challenge for its geochemical characterization (origin, thermal maturity and the degree of preservation) within a context of petroleum system. This organic material occurs in the basal Araras Group, considered as a Neoproterozoic cap carbonate, composed of dolostones (Mirassol d'Oeste Formation) overlaid by limestones and shales (Guia Formation). Geochemical analyses in samples of carbonate with bitumen from two open pits (Terconi and Tangará quarries) have shown low to very low total organic carbon content. Analyses of representative samples of Guia and Mirassol d'Oeste formations allowed us to obtain Gas chromatography (GC) traces and diagnostic biomarkers. n-C14 to n-C37 alkane distribution patterns in all samples suggests a major contribution of marine algae. Mid-chain monomethyl alkanes (C14sbnd C25) identified in both sets of samples were also reported in all mid to late Proterozoic oils and source rocks. However, there are significant differences among terpane distribution between the Mirassol d'Oeste and Tangará da Serra regions. The integration of organic geochemistry data and geological information suggests an indigenous origin for studied bitumen, primarily accumulated as hydrocarbon fluids migrated to carbonate rocks with higher porosity and permeability, and afterwards, altered to bitumen or migrabitumen. Although further investigations are required, this work provides a significant contribution to the knowledge about the remnant of this hypothetical Neoproterozoic petroleum system developed in the Southern Amazonian Craton.

  19. Correlations between the North China Craton and the Indian Shield: Constraints from regional metallogeny

    Directory of Open Access Journals (Sweden)

    Caifeng Li

    2015-11-01

    Full Text Available The correlation between the North China Craton (NCC and the Indian Shield (IND has been a hot topic in recent years. On the basis of ore deposit databases, the NCC and IND have shown broad similarity in metallogenesis from the middle Archaean to the Mesoproterozoic. The two blocks both have three major metallogenic systems: (1 the Archaean BIF metallogenic system; (2 the Paleoproterozoic Cu-Pb-Zn metallogenic system; and (3 the Mesoproterozoic Fe-Pb-Zn system. In the north margin of the NCC and the west margin of the IND, the Archaean BIF-Au-Cu-Pb-Zn deposits had the same petrogenesis and host rocks, the Paleoproterozoic Cu-Pb-Zn deposits were controlled by active belts, and the Mesoproterozoic Fe-Pb-Zn deposits were mainly related to multi-stage rifting. Matching regional mineralization patterns and geological features has established the continental assembly referred to as “NCWI”, an acronym for the north margin of the NCC (NC and the west margin of the IND (WI during the middle Archaean to the Mesoproterozoic. In this assembly, the available geological and metallogenic data from the Eastern Block and active belts of NC fit those from the Dharwar craton and the Aravalli–Delhi–Vindhyan belt of WI, respectively. Moreover, the depositional model and environment of Paleoproterozoic metasedimentary manganese deposits in NCWI implied that the assembly may be located at low latitudes, where the conditions were favorable for dissolving ice and precipitating manganese deposits.

  20. Identifying the Transition Zone Between East and West Dharwar Craton by Seismic Imaging

    Science.gov (United States)

    Ashish; Parvez, Imtiyaz A.

    2017-09-01

    The data from 12 temporary broadband seismic stations operated across east-west corridor in Dharwar region of Indian Peninsula along with ten other seismic stations operated by CSIR National Geophysical Research Institute (NGRI) in the region have been analysed that provide high-resolution image of southern Dharwar crust. Crust along the corridor is imaged by receiver function H-k stacking, common conversion point stacking using data from 22 sites in combination with joint inversion modeling of receiver functions and Rayleigh wave group velocity dispersion curves. The velocity image reveals thinner crust (36-38 km) except one site (coinciding with Cuddapah basin on the surface) in East Dharwar Craton (EDC), while crust beneath the West Dharwar Craton (WDC) is thicker (46-50 km). This study also observed a transition zone between EDC and WDC starting west of Closepet granite to the east of Chitradurga Schist Belt (CSB), which shows diffused Moho with a thickness of 40-44 km. Chitradurga Schist Belt is identified as the contact between Mesoarchean (WDC) and Neoarchean (EDC) crustal blocks. The lowermost part of the crust (V_s > 4.0 ) is thin (2-6 km) beneath EDC, intermediate (6-8 km) beneath transition zone and thicker (14-30 km) beneath WDC across the profile.

  1. Situación actual y perspectivas de industrialización de los cítricos en la hoya del rio minero. (Occidente del departamento de Boyacá Actual situation and Industrial Perspectives of citrus fruit at the Basin of the "Rio Minero" (Western region of the Departament of Boyaca

    Directory of Open Access Journals (Sweden)

    Rodríguez C. Luis Felipe

    1998-12-01

    Full Text Available La hoya del "Río Minero" se localiza en la región oriental de departamento Boyacá; comprende nueve municipios reconocidos
    por su explotación minera. La producción agrícola en esta región
    se basa en cultivos frutícolas particularmente cítricos tales como naranjas y tangelos que son la base económica de pequeños y medianos agricultores. Este sistema de producción es no tecnificado al igual que la de otros productos no frutícolas. Su mercadeo muestra un porcentaje alto de pérdidas de la producción como resultado de un manejo postcosecha inadecuado. Sin embargo, la producción de fruta muestra unos potenciales importantes para llevar a cabo proyectos
    agroindustriales de producción de jugo lo cual mejoraría el desarrollo de la región.The "Río Minero" basin is located in the west province of Boyaca. It comprises nine municipalities very well known because of its mining exploitation. The agricultural production in this region is focused on fruits harvesting particulary citrus such as oranges and tangenines which are the economic base of small and medium farmers. This production system is similar to the non technifield traditional production of non fruit crops. Its marketing shows a high percentage of production losses as a result of inadequate post-harvesting management. However, fruit production shows an important potencial for implementing agroindustrial projects for juice production which will improve the development of the region.

  2. É realmente necessário o uso do estimulador de nervo periférico no bloqueio do nervo femoral? ¿Es realmente necesario el uso del estimulador de nervio periférico en el bloqueo del nervio femoral? Peripheral nerve stimulator for femoral nerve block. Is it really necessary?

    Directory of Open Access Journals (Sweden)

    Karl Otto Geier

    2003-06-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Vários são os métodos de localização do nervo femoral no espaço perivascular na região inguinal sendo o mais comum o do estimulador de nervo periférico. O objetivo deste estudo foi o de avaliar a necessidade do bloqueio do nervo femoral com o método do estimulador de nervo periférico, comparando-o com o método da perda de resistência tanto pela técnica de injeção única como pela técnica com catéteres. MÉTODO: Foram realizados 60 bloqueios do nervo femoral divididos em quatro grupos homogêneos (GA, GB, GC e GD. Trinta bloqueios representaram dois grupos pela técnica de injeção única, quinze com agulha descartável 21G (GA e quinze com agulha isolada adaptada ao estimulador de nervo periférico (GC e os restantes trinta bloqueios divididos em quinze bloqueios com cateter venoso (GB e quinze com cateter longo Contiplex® (GD. Todos os bloqueios do nervo femoral foram realizados no espaço perivascular inguinal. O espaço perifemoral foi identificado após a segunda perda de resistência ao ar (fascia ilíaca (GA e GC, e com 0,3 a 0,4 mA com o estimulador de nervo periférico (GB e GD. Foram avaliados os seguintes parâmetros: tempo para a realização do bloqueio; presença ou ausência de parestesias ou disestesias; dificuldade de punção e falhas. RESULTADOS: Não foram relatadas parestesias nem disestesias. Duas falhas resultaram no grupo A (p JUSTIFICATIVA Y OBJETIVOS: Varios son los métodos de localización del nervio femoral en el espacio perivascular en la región inguinal siendo el más común el del estimulador de nervio periférico. El objetivo de este estudio fue el de evaluar la necesidad del bloqueo del nervio femoral con el método del estimulador del nervio periférico, comparándose con el método de la pérdida de resistencia tanto por la técnica de inyección única como por la técnica con catéteres. MÉTODO: Fueron realizados sesenta bloqueos del nervio femoral divididos en

  3. Meanings of the nursing diagnosis implementation process for nurses at a university hospital Significados del proceso de implementación del diagnóstico de enfermeria para enfermeras de un hospital universitario Significados do processo de implementação do diagnóstico de enfermagem para enfermeiras de um hospital universitário

    Directory of Open Access Journals (Sweden)

    Antônio Fernandes Costa Lima

    2006-10-01

    Full Text Available This qualitative study aims to understand the meanings nurses at a university hospital attribute to the implementation process of the Nursing Diagnosis Classification System (DEn as a phase in the Nursing Care System (NCS. Data were collected through interviews with eight nurses from the Medical Clinical Unit, who participated in the creation of an instrument to implement the DEn in the NCS. In their reports, the respondents expressed a positive change in their feelings, from initial discomfort and adverse perception of the change proposal. The stepwise appropriation of the process stages allowed them, besides the sharing of feelings, decisions and responsibilities for the results, to develop the belief that they would able to overcome the difficulties.Este estudio cualitativo busca comprender los significados atribuidos por enfermeras de un hospital universitario al proceso de implementación del diagnóstico de enfermería (DEn como etapa del Sistema de Atención de Enfermería (NCS. La recolecta de datos fue realizada por medio de entrevistas con ocho enfermeras de la unidad de Clínica Médica, que participaron de la construcción de un instrumento para la implementación del DEn en la NCS. Durante las narraciones, las colaboradoras explicitaron una transformación positiva de sus sentimientos, a partir del desconforto inicial y de la percepción desfavorable con relación a la propuesta de mudanza. En virtud de la apropiación gradual de las etapas del proceso por la cual pasaron, permitieron además de compartir sentimientos, decisiones, responsabilidades por los resultados, fundamentalmente alcanzaron el desarrollo de la creencia de que serian capaces de superar las dificultades.Este estudo qualitativo busca compreender os significados atribuídos por enfermeiras, de um hospital universitário, ao processo de implementação do sistema de classificação de diagnósticos de enfermagem (DEn como etapa do Sistema de Assistência de

  4. Thermal stabilization of the Zimbabwe Craton deduced from high-precision Rb-Sr chronology, Great Dyke

    NARCIS (Netherlands)

    Nebel, O.; Mezger, K.

    2008-01-01

    Dating low temperature events such as magmatic cooling or (hydro-)thermal surges in Archean and Proterozoic terranes is crucial in defining cratonal thermal stabilization after episodic continental growth during the Archean and Early Proterozoic. Rubidium-Sr chronology is potentially a powerful tool

  5. Formation and temporal evolution of the Kalahari sub-cratonic lithospheric mantle: Constraints from Venetia xenoliths, South Africa

    NARCIS (Netherlands)

    Hin, R.C.; Morel, M.L.A.; Nebel, O.; Mason, P.R.D.; van Westrenen, W.; Davies, G.R.

    2009-01-01

    The ~533 Ma Venetia Diamond Mine is located between the Kaapvaal and Zimbabwe Cratons and the study of selected xenoliths provides the opportunity to investigate the temporal evolution of the sub-continental lithospheric mantle (SCLM) underneath southern Africa, as well as the extent and potentially

  6. Sources and mobility of carbonate melts beneath cratons, with implications for deep carbon cycling, metasomatism and rift initiation

    Science.gov (United States)

    Tappe, Sebastian; Romer, Rolf L.; Stracke, Andreas; Steenfelt, Agnete; Smart, Katie A.; Muehlenbachs, Karlis; Torsvik, Trond H.

    2017-05-01

    Kimberlite and carbonatite magmas that intrude cratonic lithosphere are among the deepest probes of the terrestrial carbon cycle. Their co-existence on thick continental shields is commonly attributed to continuous partial melting sequences of carbonated peridotite at >150 km depths, possibly as deep as the mantle transition zone. At Tikiusaaq on the North Atlantic craton in West Greenland, approximately 160 Ma old ultrafresh kimberlite dykes and carbonatite sheets provide a rare opportunity to study the origin and evolution of carbonate-rich melts beneath cratons. Although their Sr-Nd-Hf-Pb-Li isotopic compositions suggest a common convecting upper mantle source that includes depleted and recycled oceanic crust components (e.g., negative ΔεHf coupled with > + 5 ‰ δ7Li), incompatible trace element modelling identifies only the kimberlites as near-primary low-degree partial melts (0.05-3%) of carbonated peridotite. In contrast, the trace element systematics of the carbonatites are difficult to reproduce by partial melting of carbonated peridotite, and the heavy carbon isotopic signatures (-3.6 to - 2.4 ‰ δ13C for carbonatites versus -5.7 to - 3.6 ‰ δ13C for kimberlites) require open-system fractionation at magmatic temperatures. Given that the oxidation state of Earth's mantle at >150 km depth is too reduced to enable larger volumes of 'pure' carbonate melt to migrate, it is reasonable to speculate that percolating near-solidus melts of carbonated peridotite must be silicate-dominated with only dilute carbonate contents, similar to the Tikiusaaq kimberlite compositions (e.g., 16-33 wt.% SiO2). This concept is supported by our findings from the North Atlantic craton where kimberlite and other deeply derived carbonated silicate melts, such as aillikites, exsolve their carbonate components within the shallow lithosphere en route to the Earth's surface, thereby producing carbonatite magmas. The relative abundances of trace elements of such highly

  7. Controle da dor pós-operatória da artroplastia total do joelho: é necessário associar o bloqueio do nervo isquiático ao bloqueio do nervo femoral? Control del dolor postoperatorio de la artroplastia total de la rodilla: ¿es necesario asociar el bloqueo del nervio isquiático al bloqueo del nervio femoral? Control of postoperative pain following total knee arthroplasty: is it necessary to associate sciatic nerve block to femoral nerve block?

    Directory of Open Access Journals (Sweden)

    Affonso H. Zugliani

    2007-10-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A artroplastia total do joelho (ATJ promove grande trauma tecidual, produzindo intensa dor no pós-operatório. A analgesia pós-operatória de boa qualidade é fundamental, devendo-se considerar que a mobilização articular precoce é um importante aspecto para obtenção de bons resultados. Há controvérsias na literatura sobre a eficácia do bloqueio isolado do nervo femoral. O objetivo deste estudo foi avaliar a analgesia pós-operatória com a associação do bloqueio dos nervos isquiático e femoral. MÉTODO: Foram estudados 17 pacientes submetidos à ATJ sob raquianestesia, divididos em dois grupos: A e B. No Grupo A (n = 9 foi realizado bloqueio do nervo femoral e no Grupo B (n = 8, bloqueio dos nervos femoral e isquiático. Os bloqueios foram realizados no pós-operatório imediato utilizando-se 20 mL de ropivacaína a 0,5% em cada um. A dor foi aferida nas primeiras 24 horas pela Escala Analógica Visual e escala verbal. Foi observado o tempo decorrido entre os bloqueios e a primeira queixa de dor (M1. RESULTADOS: A mediana do tempo de analgesia (M1 no Grupo A foi de 110 min. e no Grupo B de 1.285 min. (p = 0,0001. Não foram observadas complicações atribuíveis às técnicas utilizadas. CONCLUSÃO: O bloqueio do nervo isquiático, quando associado ao bloqueio do nervo femoral, nas condições deste estudo, melhorou de maneira significativa a qualidade da analgesia pós-operatória da ATJ.JUSTIFICATIVA Y OBJETIVOS: La artroplastia total de la rodilla (ATR promueve gran trauma del tejido produciendo un intenso dolor en el postoperatorio. La analgesia de postoperatorio de buena calidad es fundamental, debiendo considerar que la movilización articular precoz es un importante aspecto para la obtención de buenos resultados. Existen controversias en la literatura sobre la eficacia del bloqueo aislado del nervio femoral. El objetivo de este estudio fue evaluar la analgesia en postoperatorio con la asociaci

  8. REPTILES DEL VALLE SECO DEL RIO MAGDALENA (HUILA, COLOMBIA)

    National Research Council Canada - National Science Library

    Rafael Moreno-Arias; Simón Quintero-Corzo

    2015-01-01

      We describe the assemblages of reptiles from the dry valley of the Magdalena River in Huila department, and a comparison of assemblages between the predominant vegetation coverages and climatic seasons...

  9. Thallium isotopes as a potential tracer for the origin of cratonic eclogites

    Science.gov (United States)

    Nielsen, Sune G.; Williams, Helen M.; Griffin, William L.; O'Reilly, Suzanne Y.; Pearson, Norman; Viljoen, Fanus

    2009-12-01

    Cratonic eclogites are inferred to originate either from subducted ocean crust or mantle melts accreted onto the roots of continents. These models have different implications for the growth of continents, but it is currently difficult to determine the origin of individual eclogite suites. Upper ocean crust altered at low temperatures and marine sediments both display high thallium (Tl) concentrations and strongly fractionated Tl isotope signatures relative to the ambient upper mantle. In this study we carry out the first examination of the suitability of Tl isotopes as a tracer for an ocean-crust origin of cratonic eclogites. We have analysed the Tl isotope composition of clinopyroxene and garnet in six eclogites from the Kaalvallei and Bellsbank kimberlite pipes in South Africa. Minerals were pre-cleaned with an HCl leaching technique and the leachates display variably light Tl isotope ratios. These most likely reflect low-temperature hydrothermal alteration occurring after eruption of the kimberlite that carried the eclogites to the surface. The leached mineral pairs all display identical Tl isotope ratios, strongly suggesting that the source of the analysed Tl is identical for each mineral pair. It is, however, not possible to exclude the possibility that the analysed Tl originates from kimberlitic material that was not removed by the cleaning procedure. Only one of the six samples exhibits a Tl isotope composition different from ambient mantle. Assuming that the Tl isotope signatures indeed represent the eclogite minerals and not any form of contamination, the Tl isotope composition in this sample is consistent with containing a minor component (low temperatures. Thallium isotopes may become one of the most sensitive indicators for the presence of low-T altered ocean crust because of the stark contrast in Tl concentration and isotopic composition between the mantle and altered ocean crust. In fact, no other chemical or isotopic tracer could have provided an

  10. Cover sequences at the northern margin of the Antongil Craton, NE Madagascar

    Science.gov (United States)

    Bauer, W.; Walsh, G.J.; De Waele, B.; Thomas, Ronald J.; Horstwood, M.S.A.; Bracciali, L.; Schofield, D.I.; Wollenberg, U.; Lidke, D.J.; Rasaona, I.T.; Rabarimanana, M.H.

    2011-01-01

    The island of Madagascar is a collage of Precambrian, generally high-grade metamorphic basement domains, that are locally overlain by unmetamorphosed sedimentary rocks and poorly understood low-grade metasediments. In the Antalaha area of NE Madagascar, two distinct cover sequences rest on high-grade metamorphic and igneous basement rocks of the Archaean Antongil craton and the Neoproterozoic Bemarivo belt. The older of these two cover sequences, the Andrarona Group, consists of low-grade metasedimentary rocks. The younger sequence, the newly defined Ampohafana Formation, consists of unmetamorphosed sedimentary rocks. The Andrarona Group rests on Neoarchaean granites and monzogranites of the Antongil craton and consists of a basal metagreywacke, thick quartzites and an upper sequence of sericite-chlorite meta-mudstones, meta-sandstones and a volcaniclastic meta-sandstone. The depositional age of the volcaniclastic meta-sandstone is constrained in age by U–Pb laser-ablation ICP-MS analyses of euhedral zircons to 1875 ± 8 Ma (2σ). Detrital zircons of Archaean and Palaeoproterozoic age represent an input from the Antongil craton and a newly defined Palaeoproterozoic igneous unit, the Masindray tonalite, which underlies the Andrarona Group, and yielded a U–Pb zircon age of 2355 ± 11 Ma (2σ), thus constraining the maximum age of deposition of the basal part of the Andrarona Group. The Andrarona Group shows a low-grade metamorphic overprint in the area near Antalaha; illite crystallinity values scatter around 0.17°Δ2Θ CuKα, which is within the epizone. The Ampohafana Formation consists of undeformed, polymict conglomerate, cross-bedded sandstone, and red mudstone. An illite crystallinity value of >0.25°Δ2Θ CuKα obtained from the rocks is typical of the diagenetic zone. Occurrences of rhyodacite pebbles in the Ampohafana Formation and the intrusion of a basaltic dyke suggest a deposition in a WSW-ENE-trending graben system during the opening of the Indian

  11. Constraints on the depth and thermal history of cratonic lithosphere from peridotite xenoliths, xenocrysts and seismology

    Science.gov (United States)

    Mather, Kathy A.; Pearson, D. Graham; McKenzie, Dan; Kjarsgaard, Bruce A.; Priestley, Keith

    2011-07-01

    the southern African lithosphere. We find very similar estimates for the heat flow and thickness of the lithosphere between SW Namibia (off-craton) and Bultfontein (on-craton). This supports suggestions of a cratonic thermal regime and equivalent lithospheric thickness across that region of southern Africa at the time of kimberlite sampling, with concurrent local thermal disturbance evident in Namibia. Complimentary, novel, seismically-obtained geotherm estimates show that the lithosphere in Namibia is now significantly thinner than the estimate at 70 Ma obtained from xenolith thermobarometry.

  12. Sone megafan: A non-Himalayan megafan of craton origin on the southern margin of the middle Ganga Basin, India

    Science.gov (United States)

    Sahu, Sudarsan; Saha, Dipankar; Dayal, Shankar

    2015-12-01

    Researchers in the last few decades have focused on the fluvial megafans at the base of Himalayan foothills in the Ganga Basin. No major effort has so far been made to delineate any such large depositional environment at the base of the northern Indian peninsular craton at the distal parts of the basin. In this work, for the first time, we document a megafan, unusually created by the cratonic Sone River in the marginal plains south of the Ganga. The geomorphology of the megafan surface, distribution of palaeochannels, sedimentology, and areal extent of the megafan are described. The study also reconstructs the tectonic and palaeoclimatic conditions, which might have helped in sediment supply from the cratonic catchment areas of the Sone. We suggest tectonic control over the Sone River channel dynamics and development of the megafan. The oval- and fan-shaped, craton-derived sediment body covers an area of around 12,000 km2 in the marginal plains and about 9000 km2 in the central alluvium north of the Ganga River. The megafan is around 190 km long and 240 km wide. The mean slope of the megafan surface is 0.03°. An onlap of Himalayan sediments has occurred over the megafan at its toe parts caused by southward encroachment of the Ganga during the Holocene. The megafan sediments comprise brownish yellow fine to coarse sand and gravels with an admixture of carbonaceous nodules (kankars). The thickness of the megafan sediment, which directly overlies the Precambrian basement, varies from only a few meters in the south near the peninsular craton to 1000 m at the north in the central alluvial plain. The granular zones form prolific aquifer systems in an otherwise poor hydrogeological setting of the marginal plains.

  13. Health education: the family health teams' perspective and clients' participation Educación en salud: perspectiva del equipo de salud de la familia y la participación del usuario Educação em saúde: o olhar da equipe de saúde da família e a participação do usuário

    Directory of Open Access Journals (Sweden)

    Maria de Fátima Antero Sousa Machado

    2009-04-01

    Full Text Available This study aimed to understand the conception and performance of health education developed by the Family Health Team with a view to clients' participation. Qualitative study carried out with clients and professionals at the Family Health Program (FHP in Crato, CE, Brazil. Data were collected through semi-structured interviews and observation between May and September, 2005. Data were organized according to content analysis and literature. Findings indicate that professionals view health education as guidance and teaching focused on disease prevention and the participation of clients is perceived as listening and attention. Thus, FHP professionals need to broaden their understanding of health education and educative strategies, which should be culturally meaningful, so that clients freely and consciously decide on their participation and behavioral change in health.Este estudio tuvo como objetivo comprender la concepción y la actuación en Educación en Salud por parte del Equipo de Salud de la Familia buscando la participación del usuario. Se trata de un estudio cualitativo con usuarios y profesionales del Programa Salud de la Familia (PSF, del Municipio de Crato, estado de Ceará, Brasil. Los datos fueron recolectados a través de una entrevista semiestructurada y de observación, entre mayo y septiembre de 2005; fueron organizados mediante análisis de contenido con base en la literatura. Evidenciamos que el proceso educativo es percibido por los profesionales como orientar y enseñar a prevenir enfermedades. La participación de los usuarios significó escuchar y prestar atención. Se concluye que los profesionales del PSF necesitan ampliar la comprensión de la educación en salud y de estrategias educativas culturalmente significativas para que la participación y decisión de cambios de comportamiento en salud de los usuarios sean libres y conscientes.Este estudo objetivou compreender a concepção e a atuação de Educação em Sa

  14. Prevalência do hiperaldosteronismo primário em uma liga de hipertensão arterial sistêmica Prevalencia del hiperaldosteronismo primario en una liga de hipertensión arterial sistémica Prevalence of primary hyperaldosteronism in a systemic arterial hypertension league

    Directory of Open Access Journals (Sweden)

    Maria Jacqueline Silva Ribeiro

    2009-01-01

    Full Text Available FUNDAMENTO: Até recentemente, o hiperaldosteronismo primário era considerado uma causa rara de hipertensão secundária. Porém, ao longo dos últimos anos, muitos estudos têm sugerido que essa doença pode afetar até 20% dos hipertensos. OBJETIVO: Determinar a prevalência do hiperaldosteronismo primário em pacientes hipertensos em tratamento na liga de hipertensão de um hospital universitário. MÉTODOS: Foram realizadas dosagens de aldosterona sérica e atividade plasmática da renina em 105 pacientes, em vigência do tratamento anti-hipertensivo usual, excetuando-se aqueles em uso de beta-bloqueadores e espironolactona, em jejum e após repouso na posição deitada por 20 minutos. Aqueles com relação aldosterona/atividade plasmática da renina maior que 25 foram submetidos ao teste de supressão com sobrecarga salina endovenosa e, após a confirmação da autonomia da secreção de aldosterona, foi realizada tomografia computadorizada das adrenais. Os resultados são apresentados como porcentagens, médias e desvios-padrão. RESULTADOS: Dos 105 pacientes, 6,54% eram hipertensos refratários. Nove apresentaram relação aldosterona/atividade plasmática da renina > 25 (8,5% do total. Destes, oito foram submetidos ao teste de supressão e um (hipertenso refratário teve o diagnóstico confirmado de hiperaldosteronismo primário (0,96% do total. Foi realizada tomografia computadorizada de adrenais, sendo considerada normal. CONCLUSÃO: A prevalência do hiperaldosteronismo primário na amostra estudada foi de 0,96% do total. No entanto, quando avaliados apenas os portadores de hipertensão refratária, a prevalência foi de 14,3%.FUNDAMENTO: Hasta recientemente, se consideraba el hiperaldosteronismo primario como una causa rara de hipertensión secundaria. Sin embargo, a lo largo de los últimos años, muchos estudios han sugerido que esa enfermedad puede afectar hasta el 20% de los hipertensos. OBJETIVO: Determinar la prevalencia del

  15. Cambios histomorfológicos en los testes del Capitán, Eremophilus Mutisii (Trichomycteridae, Siluriformes, durante el ciclo reproductivo anual en el sistema del río Bogotá en Colombia Cambios histomorfológicos en los testes del Capitan, Eremophilus Mutisii (Trichomycteridae, Siluriformes, durante el ciclo reproductivo anual en el sistema del rio Bogotá en Colombia

    Directory of Open Access Journals (Sweden)

    Cala Plutarco

    1986-06-01

    Full Text Available Esta investigación establece los cambios histomorfológicos testiculares en el capitán, Eremophilus mutisii, en el sistema del río Bogotá. Peces con testículos vacíos aparecen a comienzos de mayo, y su subsecuente presencia en junio, julio y agosto indica la duración de la fase reproductiva. La mayoría de estos peces se reproducen en junio y julio. La espermatogénesis en E. mutisii puede dividirse en cuatro estadios: Formación de agregados de espematogonios (Figs. 6 &. 10-12. Maduración o formación de espermatocitos (T, espermátides (D yespermatozoides (Z (Figs. 1-6 &. 12. La pared lobular se rompe y da paso a los espermatozoides maduros y viables que llenan los conductos espermáticos (Figs. 7 &. 8. Período de involución (Figs. 9-11. El esperma residual es, probablemente, engullido por fagocitosis, aparecen quistes de células germinales en las paredes lobulares. Capitanes con una longitud total mayor de 15 cm se encontraron sexualmente maduros.  The main purpose of this research is to establish the annual morphohistological changes in the testes of the fish Eremophilus mutisii in the río Bogotá basin in Colombia. Spent testes appear in early May, and the subsequent presence in June. July and August indicates the duration of the reproductive phase. Most fishes spawn in June and July. The spermatogenic process of  E. mutisii shows that it undergoes distinct morphological changes which are of cyclic and seasonal nature. Four stages can broadly be recognised:  Formation of aggregates of spermatogonia (Figs. 6 & 10-12. Formation of the spermatocytes (T. spermatids (D and spermatozoa (Z (Figs. 1-6 & 12. Completely mature and viable spermatozoa fill the sperm ducts (Figs. 7 & 8. Period of involution (Figs. 9-11 - the residual sperm (E is, probably, engulfed by a phagocytic process, and clusters of primordial germ cells (C occur at the margin of the lobules. E. mutisii greater than 15 crn in total length were mature

  16. Paleointensity determination on Neoarchaean dikes within the Vodlozerskii terrane of the Karelian craton

    Science.gov (United States)

    Shcherbakova, V. V.; Lubnina, N. V.; Shcherbakov, V. P.; Zhidkov, G. V.; Tsel'movich, V. A.

    2017-09-01

    The results of paleomagnetic studies and paleointensity determinations from two Neoarchaean Shala dikes with an age of 2504 Ma, located within the Vodlozerskii terrane of the Karelian craton, are presented. The characteristic components of primary magnetization with shallow inclinations I = -5.7 and 1.9 are revealed; the reliability of the determinations is supported by two contact tests. High paleointensity values are obtained by the Thellier-Coe and Wilson techniques. The calculated values of the virtual dipole moment (11.5 and 13.8) × 1022 A m2 are noticeably higher than the present value of 7.8 × 1022 A m2. Our results, in combination with the previous data presented in the world database, support the hypothesized existence of a period of high paleointensity in the Late Archaean-Early Proterozoic.

  17. EARLY STAGE OF THE CENTRAL ASIAN OROGENIC BELT BUILDING: EVIDENCES FROM THE SOUTHERN SIBERIAN CRATON

    Directory of Open Access Journals (Sweden)

    D. P. Gladkochub

    2017-01-01

    Full Text Available The origin of the Central-Asian Orogenic Belt (CAOB, especially of its northern segment nearby the southern margin of the Siberian craton (SC is directly related to development and closure of the Paleo-Asian Ocean (PAO. Signatures of early stages of the PAO evolution are recorded in the Late Precambrian sedimentary successions of the Sayan-Baikal-Patom Belt (SBPB on the southern edge of SC. These successions are spread over 2000 km and can be traced along this edge from north-west (Sayan area to south-east (Baikal area and further to north-east (Patom area. Here we present the synthesis of all available and reliable LA-ICP-MS U-Pb geochronological studies of detrital zircons from these sedimentary successions.

  18. Refined Proterozoic evolution of the Gawler Craton, South Australia, through U-Pb zircon geochronology

    Science.gov (United States)

    Fanning, C.M.; Flint, R.B.; Parker, A.J.; Ludwig, K. R.; Blissett, A.H.

    1988-01-01

    Through the application of both conventional U-Pb zircon analyses and small-sample U-Pb isotopic analyses, the nature and timing of tectonic events leading to the formation of the Gawler Craton have been defined more precisely. Constraints on deposition of Early Proterozoic iron formation-bearing sediments have been narrowed down to the period 1960-1847 Ma. Deformed acid volcanics, including the economically important Moonta Porphyry, have zircon ages of ??? 1790 and 1740 Ma. The voluminous acid Gawler Range Volcanics and correlatives to the east were erupted over a short interval at 1592 ?? 2 Ma, and were intruded by anorogenic granites at ??? 1575 Ma. Small-sample zircon analyses proved to be an extremely valuable adjunct to conventional analyses, generally yielding more-concordant data which forced a curved discordia through an upper intercept slightly younger than from a conventional straight-line discordia. ?? 1988.

  19. Compositional variations in the Mesoarchean chromites of the Nuggihalli schist belt, Western Dharwar Craton (India)

    DEFF Research Database (Denmark)

    Mukherjee, Ria; Mondal, Sisir Kanti; Rosing, Minik Thorleif

    2010-01-01

    .01-0.38; Cr-ratio = 0.02-0.99) and in silicate-rich chromitite (Mg-ratio = 0.06-0.48; Cr-ratio = 0.60-0.99). In the massive chromitites, the sub-solidus re-equilibration for chromite is less or absent. However, the re-equilibration is prominent in the co-existing interstitial and included olivine (Fo(96...... has been used to compute the nature of the parental melt. The parental melt calculations indicate derivation from a high-Mg komatiitic basalt that is similar to the composition of the komatiitic rocks reported from the greenstone sequences of the Western Dharwar Craton. Tectonic discrimination...

  20. Palaeointensity determinations on rocks from the Achaean- Paleoproterozoic dykes from the Karelian craton

    Science.gov (United States)

    Shcherbakov, Valera; Shcherbakova, Valentina; Lubnina, Natalia; Zhidkov, Grigory; Tsel'movich, Vladimir

    2017-04-01

    The Karelian craton was a fragment of either an earlier late Archean supercontinent, sometimes referred to as Kenorland. Now the craton is a large Archean composite granite-greenstone terrane in the eastern part of the Fennoscandian Shield bounded by Paleoproterozoic Svecofennian orogen in the south-west and by Lapland-Kola orogen in the north-east and Belomorian province in the east-north-east. Mafic dykes, volcanic rocks, sills, and layered intrusions with ages of ca. 2.51-2.45 Ga and ca. 2.06-1.95 Ga are widespread and well-studied in the Karelian Craton. Paleointensity (Banc) results obtained on the Shala dike (age of 2504 Ma by U-Pb, ID TIMS) tracked near vl. Shala and on the Deda island are discussed here. Eighteen block samples of gabbronotires were collected in two sites in the Shala quarry. Stepwise thermal demagnetization (≤ 20 steps, up to 600 C) and stepwise AF demagnetization were done. To monitor possible mineralogical changes during thermal cleaning, magnetic susceptibility was measured after each heating step. Intensive rock magnetic investigations and thermal palaeointensity experiments using the Thellier-Coe (with check-points) and Wilson procedures were carried out. Electronic microscopy study of two samples was made too. For the exception of a viscous component some specimens from the contact zone of the gabbronorite dyke with thin dolerite dyke show two distinct components. The first E-NE intermediate-down direction component was separated at fields up to 50-60 mT and unblocking temperatures up to 520-540 C. The other S-SE low-down direction component is separated at fields from 60 to 100 mT and unblocking temperatures from 540 to 590-600 C. Based on the positive contact tests for the gabbronorite dyke, the S-SE shallow inclination remanence (I = -5.7 degrees) is interpreted to be of primary origin. Reliable palaeointensity determinations Banc fitting a set of selection criteria were determined on 13 samples from 2 sites carrying

  1. Unraveling the Brittle History of Cratonic Areas Reveals the Profound Mechanical Instability of "Stable" Shields

    Science.gov (United States)

    Viola, G.; Mattila, J.

    2014-12-01

    Archean cratons are considered stable regions that have basically remained undeformed since the Precambrian, forming the ancient cores of the continents. While this is certainly true with respect to episodes of thoroughgoing ductile deformation, recent research indicates that shields are not nearly as mechanically stable within the field of environmental conditions leading to brittle deformation. Structural and illite K-Ar geochronological studies on fault gouges point to a significant mechanical instability, wherein large volumes of 'stable' rocks can become saturated with fractures and brittle faults soon after exhumation to below 300-350° C. Indeed, old crystalline basements present compelling evidence of long brittle deformation histories, often complex and thus challenging to unfold. We use the Svecofennian Shield (SS) as an example of a supposedly 'stable' craton to show that it is possible to unravel the details of brittle histories spanning more than 1.5 Gyr. New structural and geochronological results from Finland are integrated with a review of existing data from Sweden to explore how the effects of far-field stresses are partitioned within a shield, which was growing progressively saturated with fractures as time passed from its initial consolidation. Comparison of time-constrained paleostress data from different locations of the shield shows a remarkably similar stress evolution through time, despite the different local geological boundary conditions. This suggests that the southern SS has behaved as a mechanically coherent block since the Late Mesoproterozoic, time when it had already reached structural maturity with respect to the saturation of brittle features. Structural reactivation rather than generation of new fractures is the key mechanism that has controlled the mechanical evolution of the shield and that will steer its future brittle evolution. Similar brittle histories within different domains of the shield also imply that far-field stresses

  2. Deep Structure and Subsidence of Parnaíba Cratonic Basin, NE Brazil

    Science.gov (United States)

    Rodríguez Tribaldos, V.; White, N. J.; Coelho, D. L. O.; Julià, J.

    2016-12-01

    Cratonic basins are typically underlain by thick lithosphere and slowly subside over hundreds of millions of years. Their stratigraphy consist of unconformity-bounded sequences of continental and shallow marine sedimentary rocks. The origin and evolution of these basins remain enigmatic. Here, we address this problem by carrying out an integrative study of the Parnaíba cratonic basin in NE Brazil. We analyse a 1400 km long deep seismic reflection profile crossing the basin, teleseismic earthquakes recorded by 9 broadband and 10 short-period, 3 component seismometers, 25 ancillary seismic reflection profiles, and 46 wells distributed throughout the basin. Our aim is to constrain subsidence histories in the context of crustal structure and basin architecture. Combined interpretation of the deep seismic profile and 1D velocity models calculated by joint inversion of receiver functions and surface wave dispersion curves locates the Moho at 39 km beneath the city of Teresina on the basin's eastern region. At the eastern edge of the basin, the Moho lies at 37 km beneath Precambrian basement. In the centre of the basin, the Moho lies at 37 km. Beneath Teresina, an increase in S wave velocity at 30 km coincides with mid-crustal reflections on the deep seismic profile. This feature is interpreted as the top of a high-velocity body within the crust. Ancillary seismic profiles show that the stratigraphy is divisible into packages of undisturbed reflections separated by bright, rugged reflections that resemble buried paleolandscapes. Correlation of seismic profiles with well logs shows that these surfaces are basin-wide erosional unconformities that are observable in outcrop. Backstripped and water-loaded subsidence curves show exponential decrease in subsidence over the last 400 Ma. This background subsidence is punctuated by departures from the long-term trend at times when unconformities occur, which we interpret as mild regional uplift events.

  3. Composición y distribución del género Croton (Euphorbiaceae en Colombia, con cuatro especies nuevas

    Directory of Open Access Journals (Sweden)

    Murillo Aldana José Carmelo

    1999-11-01

    Full Text Available A preliminary synopsis of the Colombian species of Craton (Euphorbiaceae is presented, including a checklist of 19 sections and 83 species, along with their altitudinal and geographical distributions, and a key to the sections. The sections Cyclostigma (28 spp, Luntia (10 spp, Cascarilla (8 spp and Velamea (8 spp are the most speciose in Colombia. The genus is broadly distributed in Colombia; the Andean region (50 spp and the Caribbean region (23 spp are the richest. Most species of Craton occur below 2000 m altitud e in disturbed foresto Four new species in sections Argyrocroton Cyclostigma and Luntia are proposed. Craton kaiteuri Jabl., and Craton monachinoensis Jabl. are included in the synonymy of Croton cunea tus Klotzsch.Se presenta una sinopsis preliminar del género Craton (Euphorbiaceae en Colombia. Se hace un listado de las 19 secciones y 83 especies presentes en el país, para cada una se hacen anotaciones de altitud y distribución geográfica, tanto política como por regiones naturales. Se incluye una clave para las secciones presentes en Colombia. Las secciones con el mayor número de especies son Cyclostigma (28 sppl, Luntia (10 spp, Cascarilla (8 spp y Velamea (8 spp. El género está ampliamente distribuido en el país; las regiones más diversas son la Andina (50 spp y la Caribe (23 spp. La mayoría de las especies de Craton crecen a alturas menores de 2000 m en ambientes con distinto grado de intervención; solo algunas crecen en lugares poco disturbados. Se proponen cuatro especies nuevas en las secciones Argyracroton, Cyclostigma y Luntia. Se incluyen como sinónimos de Croton cuneatus Klotzsch a Croton kaiteuri Jabl. y Craton monachinoensis Jabl.

  4. Constraints and/or determinants of return to sexual activity in the puerperium Condicionantes y/o determinantes del retorno a la actividad sexual en el puerperio Condicionantes e/ou determinantes do retorno à atividade sexual no puerpério

    Directory of Open Access Journals (Sweden)

    Cleci de Fátima Enderle

    2013-06-01

    de salud, la vergüenza del propio cuerpo y las alteraciones en la libido. CONCLUSÍON: se considera fundamental que la temática de la anticoncepción sea abordada con la mujer/pareja durante el prenatal, para que tenga oportunidad de reflexionar y dialogar, antes del momento crítico en sí. OBJETIVO: identificar fatores que condicionam e/ou determinam o retorno das atividades sexuais no puerpério. MÉTODO: estudo exploratório e descritivo, desenvolvido em um hospital universitário do Sul do Brasil. Fizeram parte do estudo 15 puérperas que realizaram a consulta de enfermagem, no período de agosto a outubro de 2011. A coleta de dados aconteceu por entrevista semiestruturada, após o término da consulta, questionando-as quanto ao retorno da atividade sexual e às sensações envolvidas nesse processo. RESULTADOS: o medo de uma nova gravidez foi o principal determinante/condicionante do retorno sexual no pós-parto. Na análise temática despontou, como fatores condicionantes e/ou determinantes, o medo de sentir dor, a liberação do profissional de saúde, a vergonha do próprio corpo e as alterações na libido. CONCLUSÃO: considera-se fundamental que a temática da anticoncepção seja abordada com a mulher/casal durante o pré-natal, para que tenha oportunidade de reflexão e diálogo, anterior ao momento crítico em si.

  5. La agricultura en la Amazonia ribereña del río Ucayali: ¿una zona productiva pero poco rentable? A agricultura ribeirinha Amazônica do rio Ucayali: uma zona produtiva mas pouco rentável?

    Directory of Open Access Journals (Sweden)

    Ricardo A. Labarta

    2007-06-01

    Full Text Available La riqueza de los suelos aluviales a lo largo de los ríos amazónicos permite altos rendimientos en los cultivos. En el Perú, esta característica ha sido sustento de propuestas que sugieren concentrar la agricultura amazónica en sus riberas. Sin embargo, la viabilidad económica de la agricultura ribereña sigue siendo desconocida. Este artículo usa un modelo agroeconómico y analiza la rentabilidad de la agricultura ribereña del río Ucayali en las cercanías de Pucallpa. Se da énfasis a la importancia de las distintas condiciones agronómicas y del mercadeo propias de la zona. Los resultados muestran que la rentabilidad de los sistemas agrícolas ribereños difiere con el tipo de tierra utilizado y con el carácter temporal o permanente de la actividad que realizan los agricultores. Además, la rentabilidad está condicionada a las variaciones propias de la agricultura ribereña, particularmente las inundaciones tempranas. Así los buenos rendimientos de sus suelos aluviales no garantizan la rentabilidad en todos sus cultivos y sistemas.A fertilidade dos solos aluviais ao longo dos rios da Amazônia resulta em altos rendimentos agrícolas. No Peru, esta característica tem levado à propostas de política que sugerem que se concentre a agricultura da Amazônia ao longo das costas dos rios. Contudo, a viabilidade econômica da agricultura ribeirinha é ainda desconhecida. O presente artigo usa um modelo agroeconômico para analisar a lucratividade deste tipo de agricultura no rio Ucayalinas proximidades de Pucallpa. Ênfase especial foi dada às condições de produção e comercialização na área. Os resultados mostram que a lucratividade dos sistemas de cultivo ribeirinhos variam de acordo com o tipo de solo em questão e a natureza temporal ou permanente das atividades dos agricultores. Ademais, esta lucratividade é condicionada pelas variações na agricultura ribeirinha, especialmente as enchentes prematuras dos rios. Deste modo

  6. Cirurgia de revascularização do miocárdio usando apenas tomografia computadorizada como angiograma pré-operatório Cirugía de revascularización del miocardio usando sólo tomografía computada como angiograma preoperatorio Coronary artery bypass using only computed tomography as pre-operative angiogram

    Directory of Open Access Journals (Sweden)

    Diego Felipe Gaia

    2009-09-01

    Full Text Available A cirurgia de revascularização do miocárdio (CRM é um procedimento bem estabelecido com indicações atuais precisas. O advento e a disseminação dessa técnica foram possíveis após a introdução do angiograma coronário. Embora muitos métodos de avaliação tenham evoluído nos últimos anos, nenhum conseguiu substituir o angiograma coronário invasivo como exame pré-operatório. A tomografia computadorizada (TC emergiu como uma alternativa ao angiograma coronário invasivo. O presente relato descreve dois casos de CRM realizadas usando-se apenas a TC como técnica de avaliação anatômica das artérias coronárias pré-operatória.La cirugía de revascularización del miocardio (CRM es un procedimiento bien establecido con indicaciones actuales precisas. El advenimiento y la divulgación de esta técnica fueron posibles después de la introducción del angiograma coronario. Aunque muchos métodos de evaluación hayan evolucionados en los últimos años, ninguno ha conseguido sustituir al angiograma coronario invasivo como examen preoperatorio. La tomografía computada (TC surgió como una alternativa al angiograma coronario invasivo. El presente informe describe dos casos de CRM realizadas usando sólo la TC como técnica de evaluación anatómica de las arterias coronarias preoperatoria.Coronary artery bypass graft (CABG is a well established procedure with current precise indications. The advent and spread of this technique was possible after the introduction of the coronary angiogram. Although many evaluation methods have been developed in the past years, to date, none have been able to replace the invasive coronary angiogram as a pre-operative exam. Computed tomography angiography (CTA has emerged as an alternative to invasive coronary angiogram. In this report we describe two CABG cases that were performed using only this technique as a pre-operative anatomic coronary arteries evaluation.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2016-11-01

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

  8. Genesis of the Zhijiadi Ag-Pb-Zn Deposit, Central North China Craton: Constraints from Fluid Inclusions and Stable Isotope Data

    National Research Council Canada - National Science Library

    Tao Liu; Suo-Fei Xiong; Shao-Yong Jiang; Hua-Liang Li; Qi-Zhi Chen; Hai Jiang

    2017-01-01

    The Zhijiadi Ag-Pb-Zn deposit is located in the central North China Craton. Fluid inclusions (FIs) studies indicate three types of FIs, including aqueous, aqueous-carbonic, and daughter mineral-bearing multiphase inclusions...

  9. Integrative review: evidences on the practice of intermittent/indwelling urinary catheterization Revisión integrativa: evidencias en la práctica del cateterismo urinario intermitente/demora Revisão integrativa: evidências na prática do cateterismo urinário intermitente/demora

    Directory of Open Access Journals (Sweden)

    Flávia Falci Ercole

    2013-02-01

    cateterismo urinario y precaver infección del trato urinario. MÉTODO: La busca fue realizada en las bases de datos PubMed y Cochrane para el desarrollo de la revisión integrativa. La muestra fue de 34 artículos. Éstos fueron analizados por dos investigadores independientes usando instrumento adaptado para verificar el nivel de evidencia y grado de recomendación, además de la utilización de la escala de Jadad. RESULTADOS: las evidencias disponibles relacionadas a la atención de enfermería a los pacientes sometidos al cateterismo urinario son: la tasa de infección en el trato urinario no altera con la higienización del perineo con agua estéril o no, con el uso de solución de iodo-povidona o clorhexidina; o aplicando técnica aseada o estéril. El uso del catéter intermitente con técnica aseada implica en menores tasas de complicaciones e infecciones en comparación con la de demora. La remoción del catéter en hasta 24 horas pos cirugía y el uso del catéter impregnado con antimicrobiano y de revestimiento hidrofílico reduce incidencia de infección del trato urinario. CONCLUSIONES: existen controversias con relación a la técnica de higienización periuretral, tipo de material del catéter y algunos procedimientos para el mantenimiento y remoción del catéter. Los resultados de esta revisión representan actualización de las conductas y tomada de decisión del enfermero para la prevención de infección del trato urinario en el cateterismo urinario.OBJETIVO: buscar as melhores evidências disponíveis na literatura sobre o conhecimento produzido e relacionado à técnica de cateterismo urinário intermitente e de demora, para embasar cientificamente o cuidado de enfermagem prestado ao paciente, submetido ao cateterismo urinário, e prevenir infecção do trato urinário. MÉTODO: a busca foi realizada nas bases de dados PubMed e Cochrane para o desenvolvimento da revisão integrativa. A amostra foi composta por 34 artigos. Esses foram analisados por dois

  10. Social representations of the Brazilian national health care system in the city of Rio de Janeiro, Brazil, according to the structural approach Representaciones sociales del sistema único de salud en el municipio de Río de Janero, Brasil, según el enfoque estructural As representações sociais do sistema único de saúde no município do Rio de Janeiro, Brasil, segundo a abordagem estrutural

    Directory of Open Access Journals (Sweden)

    Antonio Marcos Tosoli Gomes

    2008-02-01

    Full Text Available The Brazilian National Health Care System The Single Health System (SHS [SUS-Sistema Único de Saúde] faces difficulties for its effective implementation. This paper aims to characterize the contents and the social representation structure of the Brazilian health care system among health care professionals in the city of Rio de Janeiro. The concept of social memory and the theory of social representation were adopted as frameworks. Five health care institutions were included in this research, with 100 professionals altogether. The free-association technique was used to collect data and the EVOC 2003 software was used analyzed for data analysis. The results signal to a central nucleus, characterized by negative attitudes regarding the SUS. In the contrast area, there is a negative attitude towards the effectiveness of the system and a positive attitude towards the care provided to service users, also showing other principles. At its periphery, the implementation of new opinions about the representation could be observed. It is concluded that the professionals present social representations that recognize the SUS as a new system, eliciting negative attitudes among the professionals, and that is in a process of formation or progressive transformation, raising judgments about the pertinence of the system's principles.El sistema único de salud (SUS enfrenta dificultades para una efectiva implementación. Este estudio tiene por objetivo caracterizar los contenidos y la estructura de las representaciones profesionales sobre la implementación del SUS en la ciudad de Río de Janeiro. Fueron adoptadas como guías la Teoría de Representación y Memoria Social, desarrolladas en cinco instituciones con cien profesionales. Los datos fueron recolectados a través de narraciones espontáneas y posteriormente analizados por el software EVOC2000. Los resultados muestran un núcleo central que se caracterizan por actitudes negativas frente al SUS. En el

  11. Thermal modeling and geomorphology of the south border of the Sao Francisco Craton: thermochronology by fission tracks in apatites;Modelagem termica e geomorfologia da borda sul do Craton do Sao Francisco: termocronologia por tracos de fissao em apatita

    Energy Technology Data Exchange (ETDEWEB)

    Hackspacher, Peter Christian [UNESP, Rio Claro, SP (Brazil). Inst. de Geociencias e Ciencias Exatas; Godoy, Daniel Francoso de; Franco, Ana Olivia Barufi [UNESP, Rio Claro, SP (Brazil). Pos-Graduacao em Geologia Regional; Ribeiro, Luiz Felipe Brandini [NUCLEARGEO, Rio Claro, SP (Brazil); Hadler Neto, Julio Cesar [Universidade Estadual de Campinas (IFGW/UNICAMP), SP (Brazil). Inst. de Fisica Gleb Wataghin

    2007-12-15

    Recent developments in Fission Track thermochronology associated to mesozoic-cenozoic erosion and tectonic presented trough thematic maps (isotemperature), permit to model the landscape evolution in the southern border of the Sao Francisco craton, southeastern Brazil. Paleotemperature, obtained by fission track analysis in apatite, is closely related to geomorphologic interpretations. The area suffered a complex imprint of endogenous and exogenous processes resulting diversified and differentiated relieves. The landscape is strongly controlled by exhumation between Jurassic and Lower Cretaceous, uplift with tectonic denudation related to crustal heating at the Upper Cretaceous and reactivation of faults until the Miocene. This scenario is a result of reactivations of different brittle structures that accommodate the deformation in the southern border of the Sao Francisco craton. The landscape reflects denudations of up to 3 km with preserved remains of erosive surfaces in the topographical tops and chronocorrelates deposits in the basins of the region. (author)

  12. Precambrian crustal evolution and Cretaceous–Palaeogene faulting in West Greenland: Evolution of Neoarchaean supracrustal belts at the northern margin of the North Atlantic Craton, West Greenland

    OpenAIRE

    Stensgaard, Bo Møller; Keiding, Marie; Hollis, Julie A; van Gool, Jeroen A.M.; Garde, Adam A.

    2006-01-01

    The Archaean North Atlantic Craton of West Greenland collided at c. 1.9 Ga with a lesser-known Archaean craton to the north, to form the Nagssugtoqidian orogen. The Palaeoproterozoic metamorphic grade and strain intensity decrease northward through the orogen, allowing investigation of the reworked Archaean components in its northern part. Two Archaean supracrustal belts in this region – the Ikamiut and Kangilinaaq belts – are investigated here using field mapping, aeromagnetic data, zircon g...

  13. Impacto de la Capacitación del Personal en la Productividad Empresarial // Impact of Training Employees on Enterprise Productivity // Impacto da Formação de Funcionários sobre a Produtividade da Empresa

    Directory of Open Access Journals (Sweden)

    Angie Stefani Caro Ballestas

    2016-11-01

    Full Text Available Esta investigación tiene como objetivo principal evidenciar cuál es el impacto de la capacitación del personal en la productividad de la mano de obra del hipermercado en estudio. Para el desarrollo de esta investigación se tomó como objeto de estudio del área de puntos de pago del hipermercado, partiendo de la realización de un comité con los colaboradores del área a estudiar, con el fin de definir las causas de descuadres; utilizando informes de ventas y descuadres, se recopilaron los datos correspondientes a los años 2014, 2015 y 2016, así como costos de mano de obra y herramientas que fueron adquiridas durante este tiempo en la organización. Los resultados de la medición de la productividad parcial en el área de puntos de pago demostraron que la implementación de un programa de capacitación continua incide de manera positiva en la productividad. Adicionalmente se pueden observar los resultados obtenidos de las capacitaciones apoyadas de herramientas tecnológicas en la disminución de los descuadres, que son el principal problema del área estudiada.

  14. Educational games: training of community healthcare agents on children's respiratory diseases Alimentación del recién nacido después del alta hospitalaria de una Institución Amiga del Niño Jogo educativo: capacitação de agentes comunitários de saúde sobre doenças respiratórias infantis

    Directory of Open Access Journals (Sweden)

    Raquel Dully Andrade

    2008-01-01

    Full Text Available OBJECTIVE: Evaluating the use of an educational game about children's respiratory diseases by community healthcare agents (CHAs in the Family Health Program. METHODS: This is a descriptive, intervention study, with the application of the game to 101 CHAs in Passos-MG. The game was structured with cases of children and families and their respective answer sheets. For evaluation, a test about the topic was applied before and after the intervention. RESULTS: Correct answers in the test increased from 59.5% to 79.3% after participating in the game, which corresponds to a 20% increase. CONCLUSION: The increase in the CHA's knowledge, revealed after the intervention, indicates that the educational game is a satisfactory instrument for healthcare education.OBJETIVO: Evaluar la utilización de un juego educativo, sobre enfermedades respiratorias infantiles, por agentes comunitarios de salud (ACS del Programa de Salud de la Familia. MÉTODOS: Se trata de un estudio descriptivo y de una intervención, con la aplicación del juego en 101 ACS de Passos-MG. El juego fue estructurado en forma de casos de niños y familias y sus respectivas tarjetas de respuestas. Para la evaluación, fue aplicado un test sobre el tema, antes y después de la intervención. RESULTADOS: Las respuestas correctas en el test pasaron de 59,5% a 79,3%, después de haber participado en el juego, logrando un aumento de aproximadamente el 20%. CONCLUSIÓN: La elevación en conocimiento de los ACS, revelada después de la intervención, señala al juego educativo como un instrumento satisfactorio en la educación en salud.OBJETIVO: Avaliar a utilização de um jogo educativo sobre doenças respiratórias infantis por agentes comunitários de saúde (ACS de Programa de Saúde da Família. MÉTODOS: Trata-se de estudo descritivo e de intervenção, com a aplicação do jogo em 101 ACS de Passos-MG. O jogo foi estruturado em forma de casos de crianças e famílias e suas respectivas

  15. Medidas preventivas contra a AIDS e outras doenças sexualmente transmissíveis conhecidas por universitários da área de saúde Medidas preventivas contra SIDA y otras enfermedades sexualmente transmisibles conocidas por universitarios del campo de la salud Preventive measures against AIDS and other sexually transmitted diseases known by undergraduate health students

    Directory of Open Access Journals (Sweden)

    Elucir Gir

    1999-01-01

    Full Text Available Objetivando identificar as medidas de prevenção conhecidas por universitários da área da saúde, acerca da contaminação pelo HIV e outras Doenças Sexualmente Transmissíveis (essencialmente de transmissão sexual e identificar se há diferença significativa entre as citações, considerando-se o sexo dos sujeitos, realizou-se esta investigação. Foi aplicado um questionário estruturado em universitários da área da saúde aleatoriamente selecionados. Os resultados revelaram que a maioria dos itens citados como medidas preventivas para a AIDS e DST se enquadra dentro das medidas importantes para a prevenção das mesmas, no entanto, quando a análise é feita em termos da freqüência citada, ou seja, o número de estudantes que mencionaram medidas corretas, verifica-se que foi aquém do esperado, o que se torna preocupante. Outro aspecto observado nos resultados é que não há diferença, em termos de conhecimentos sobre medidas preventivas, entre estudantes do sexo masculino e feminino. Assim, a análise dos resultados permite evidenciar que os conhecimentos da maioria dos estudantes universitários estudados são precários, o que reforça a necessidade de implementar ações educativas específicas e contínuas.El presente estudio tiene los objetos de identificar las medidas preventivas conocidas por universitarios del campo de la salud, a respecto de la contaminación por HIV y otras enfermedades sexualmente transmisibles, y identificar si hay diferencia significativa entre las respuestas, considerando el sexo de los sujetos. Un cuestionario fue aplicado en universitarios del campo de la salud, los cuales fueron aleatoriamente seleccionados. Las medidas más frecuentes muestran que las medidas preventivas referidas por los universitarios são importantes, pero no observamos diferencia entre conocimiento de los estudiantes de diferentes sexos. Los universitarios están bien informados sobre medidas preventivas generales contra

  16. Sensibilidade e especificidade de critérios de classificação do índice de massa corporal em adolescentes Sensibilidad y especificidad de criterios de clasificación del índice de masa corporal en adolescentes Sensitivity and specificity of criteria for classifying body mass index in adolescents

    Directory of Open Access Journals (Sweden)

    José Cazuza de Farias Júnior

    2009-02-01

    Full Text Available OBJETIVO: Estimar a prevalência de excesso de peso em adolescentes conforme critérios de classificação do índice de massa corporal (IMC e respectivas sensibilidade e especificidade. MÉTODOS: Foram realizadas medidas de peso, estatura e dobras cutâneas, subescapular e triciptal, em 934 adolescentes (masculino= 462 e feminino= 472 de 14 a 18 anos de idade (média= 16,2; dp= 1,0 da cidade de Florianópolis (SC, em 2001. O percentual de gordura estimado a partir das dobras cutâneas (e"25% no masculino e e"30% no feminino foi utilizado como critério padrão-ouro para determinar a sensibilidade e especificidade dos critérios de classificação do IMC em adolescentes. RESULTADOS: A aplicação de diferentes pontos de corte de classificação do IMC, em geral, resultou em prevalências de excesso de peso similares (p>0,05. A sensibilidade dos critérios avaliados foi elevada nos adolescentes do sexo masculino (85,4% a 91,7% e baixa nas do sexo feminino (33,8% a 52,8%. A especificidade foi elevada em todos os critérios, para ambos os sexos (83,6% a 98,8%. CONCLUSÕES: As estimativas de prevalência de excesso de peso pelos critérios de classificação do IMC em adolescentes foram similares e apresentaram especificidade elevada para ambos os sexos, mas baixa sensibilidade nos adolescentes do sexo feminino.OBJETIVO: Estimar la prevalencia de exceso de peso en adolescentes conforme criterios de clasificación del índice de masa corporal (IMC y respectivas sensibilidad y especificidad. MÉTODOS: Fueron realizadas medidas de peso, estatura y pliegues cutáneos, subescapular y triciptal, en 934 adolescentes (masculino= 462 y femenino= 472 de 14 a 18 años de edad (promedio= 16,2; dp=1,0 de la ciudad de Florianópolis (Sur de Brasil, en 2001. El porcentaje de gordura estimado a partir de los pliegues cutáneos (?25% en el masculino y ?30% en el femenino fue utilizado como criterio estándar-oro para determinar la sensibilidad y especificidad de los

  17. Evaluation of products and services of a nursing library: user satisfaction Evaluación de los productos y servicios en una biblioteca de enfermería: satisfacción del usuario Avaliação dos produtos e serviços de uma biblioteca de enfermagem: satisfação do usuário

    Directory of Open Access Journals (Sweden)

    Sheila Kátia Cozin

    2008-08-01

    Full Text Available The goal of the study was to evaluate the quality of the services provided by the library at the Nursing School of the University of São Paulo. A questionnaire evaluating users' satisfaction with the service was employed, covering five quality components: tangibles, reliability, responsiveness, assurance and empathy. The Satisfaction Rate was calculated through the degree of importance in relation to satisfaction. The analysis of the open-ended answers was quanti-qualitative. For Reliability and Empathy, the users showed dissatisfaction with the training for bibliographic research and the librarian's willingness to meet the clients' information needs, respectively. Responsiveness did not fully satisfy the users, disagreeing with the providers. However, both agreed that the archives are outdated. Among the tangible aspects, equipment and noise were criticized most often. The results show that the library offers good service quality to its users.El estudio tuvo por objetivo evaluar la calidad de la atención en la biblioteca de la Escuela de Enfermería de la Universidad de São Paulo. Se utilizó un cuestionario que evalúa la satisfacción del usuario a través de cinco componentes de calidad: tangible, confiable, receptivo, seguridad y empatía. La Tasa de Satisfacción se calculó mediante la razón entre el grado de importancia y satisfacción. El análisis de las preguntas abiertas fue cuanti-cualitativo. En Confiabilidad y Empatía, los usuarios se mostraron insatisfechos con los entrenamientos para búsqueda bibliográfica y sobre el empeño del empleado para atender las necesidades de los clientes. Los usuarios no estuvieron plenamente satisfechos con la receptividad, sin embargo ambos concordaron que la bibliografía estaba desactualizada. Dentro de los aspectos tangibles, los equipos y el ruido fueron los más criticados. Los resultados demostraron que la biblioteca ofrece servicio de calidad a sus usuarios.O estudo teve por objetivo

  18. Análise do comportamento do hemometabolismo cerebral durante endarterectomia carotídea com pinçamento transitório Análisis del comportamiento del hemometabolismo cerebral durante endarterectomia carotídea con pinzamiento transitorio Analysis of brain hemometabolism behavior during carotid endarterectomy with temporary clamping

    Directory of Open Access Journals (Sweden)

    Gastão Fernandes Duval Neto

    2004-04-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A endarterectomia carotídea com pinçamento transitório altera a relação entre o fluxo sangüíneo cerebral e a demanda metabólica cerebral de oxigênio, com conseqüente geração de uma tendência a hipóxia oliguêmica ou desacoplamento hemometabólico. O objetivo do presente estudo foi identificar as alterações do hemometabolismo cerebral, avaliados através das alterações da saturação da oxihemoglobina no bulbo da veia jugular interna (SjO2, durante endarterectomia carotídea com pinçamento, correlacionando essas alterações com fatores com potencialidade de interferir com as mesmas, principalmente a pressão de CO2 expirada (P ET CO2 e a pressão de perfusão cerebral (PPC. MÉTODO: Participaram do estudo 16 pacientes com doença estenosante unilateral e submetidos a pinçamento arterial transitório durante endarterectomia carotídea. Os parâmetros monitorizados (saturação da oxihemoglobina no bulbo da veia jugular interna, stump pressure e a pressão de CO2 expirado foram analisados nos seguintes momentos: M1 - pré-pinçamento; M2 - 3 minutos pós-pinçamento; M3 - pré- despinçamento; M4 - pós-despinçamento. RESULTADOS: A comparação entre a SjO2 (%, Média ± DP nos períodos estudados evidenciou uma diferença entre a registrada nos momentos M1 (52,25 ± 7,87 e M2 (47,43 ± 9,19. Essa redução inicial estabilizou-se durante o pinçamento transitório, com diminuição na comparação entre M2 e M3 (46,56 ± 9,25, sem significado estatístico (p = ns. Na fase pós-despinçamento, M4 (47,68 ± 9,12, a média da SjO2 apresentou uma elevação, quando comparada com os momentos de pinçamento M2 e M3, ainda inferior ao momento pré-pinçamento M1 (M4 x M1 - p JUSTIFICATIVA Y OBJETIVOS: La endarterectomia carotídea con pinzamiento transitorio altera la relación entre el flujo sanguíneo cerebral y la demanda metabólica cerebral de oxígeno, con consecuente generación de una tendencia a

  19. The Chara-Sina dyke swarm in the structure of the Middle Paleozoic Vilyui rift system (Siberian Craton)

    Science.gov (United States)

    Kiselev, A. I.; Konstantinov, K. M.; Yarmolyuk, V. V.; Ivanov, A. V.

    2016-11-01

    The formation of the Vilyui rift system in the eastern Siberian Craton was finished with breakdown of the continent and formation of its eastern margin. A characteristic feature of this rift system is the radial distribution of dyke swarms of basic rocks. This peculiarity allows us to relate it to the breaking processes above the mantle plume, the center of which was located in the region overlain in the modern structure by the foreland of the Verkhoyan folded-thrust belt. The Chara-Sina dyke swarm is the southern part of a large area of Middle Paleozoic basaltic magmatism in the eastern Siberian Craton. The OIB-like geochemical characteristics of dolerite allow us to suggest that the melting substrate for Middle Paleozoic basaltic magmatism was represented by a relatively homogeneous, mid-depleted mantle of the plume with geochemical parameters similar to those of OIB.

  20. Crustal uplift of the Precambrian cratons due to metamorphism in crustal rocks under infiltration of mantle fluids

    Science.gov (United States)

    Artyushkov, Eugene; Chekhovich, Peter; Korikovsky, Sergey; Massonne, Hans-Joachim

    2017-04-01

    Precambrian cratons cover about 70% of the total area of the continents. During the last several million years cratonic areas underwent rapid uplift, from 100-200 m in East Europe to 1000-1500 m Southern Africa. Shortening of the Precambrian crust terminated half a billion years ago or earlier and this popular mechanism cannot be applied to its recent uplift. Large thickness of cratonic mantle lithosphere, 100-200 km in most regions, together with its low density precludes delamination of this layer and magmatic underplating as possible causes of recent uplift. It cannot be precluded that in some cratonic regions recent uplift occurred due to delamination of the lower part of mantle lithosphere with the density increased by metasomatism. Even a small uplift of ≥ 100-200 m would require delamination of a thick layer of mantle lithosphere. As a result a temperature drop of > 200 C would arise at the base of the lithosphere producing a shear wave velocities drop of > 2%. According to the seismic tomography data such a drop in VS is observed only in some regions with the Precambrian lithosphere, e.g., in Northeastern Africa. Spatial distribution of the Precambrian cratons is quite different from that predicted by the main models of dynamic topography in the mantle. Moreover, many uplifted blocks are bounded by steep slopes hundreds of meters to one kilometer high and only tens of kilometers wide. Such slopes could not have been formed by bending of thick cratonic lithosphere under the forces acting from below. Their recent formation indicates rock expansion within the crust at shallow depth comparable with the slope width. Rocks formed at the pressure P ˜ 0.5-1.0 GPa are widespread on the Precambrian cratons. This indicates that during their lifetime a layer of rocks ˜ 15-30 km thick has been removed from the crustal surface by denudation. As a result rocks which were initially located in the lower crust emerged to the middle or upper crust. Due to metamorphic

  1. The Zimbabwe Craton in Mozambique: A brief review of its geochronological pattern and its relation to the Mozambique Belt

    Science.gov (United States)

    Chaúque, F. R.; Cordani, U. G.; Jamal, D. L.; Onoe, A. T.

    2017-05-01

    The eastern margin of the Zimbabwe Craton, along the Mozambique-Zimbabwe border, includes the oldest rocks of west-central Mozambique constituting a large terrain of granite-greenstone type dated between 3000 and 2500 Ma. These rocks consist mainly of gneisses and granitoid rocks of tonalitic-trondhjemitic-granodioritic composition belonging to the Mudzi Metamorphic Complex in the northern part and to the Mavonde Complex in the southern part. The latter is associated with a granite-greenstone terrain, which includes the eastern part of Mutare-Odzi-Manica greenstone belt. A volcano-sedimentary sequences cover, belonging to the apparently Mesoproterozoic and Paleoproterozoic Umkondo and Gairezi groups respectively was deposited along the eastern margin of the craton and is exposed in the territory of Mozambique. The Umkondo minimum age is marked by intrusive dolerite in Zimbabwe dated at 1100 Ma while for the Ghairezi it is still not well established. The Gairezi Group was subjected to progressive metamorphism of Pan-African age. At the margin of the Zimbabwe Craton, in its northern part, metasedimentary units occur representing a passive margin of Neoproterozoic age. They make up the Rushinga Group, which includes felsic metavolcanic rocks dated at ca.800 Ma. Granulites and medium- to high-grade paragneisses, and migmatites of the Chimoio, Macossa and Mungari Groups of Neoproterozoic metamorphic age, overly the ortho-metamorphic pre-existing rock of ca. 1100 Ma, which belongs to the Báruè Magmatic Arc. They characterize the N-S trend Mozambique Belt, which appears to the east of the craton tectonically juxtaposed on the Archean rocks. The maximum age of deposition of these rocks, indicated by U-Pb dating of detrital zircons, is ca. 700 Ma and their minimum age is limited by a few monzonitic Cambrian intrusions dated at ca. 500 Ma. The Neoproterozoic bimodal Guro Suite, dated at ca. 850 Ma and composed of felsic and mafic members characterizes the east

  2. Instrumento para classificação de pacientes: opinião de usuários e análise de indicadores de cuidado Instrumento para clasificación de pacientes: opinión de los usuarios y análisis de indicadores del cuidado Instrument for patient classification: users' opinions and analisys of healthcare indicators

    Directory of Open Access Journals (Sweden)

    Marcia Galan Perroca

    2008-12-01

    Full Text Available Esta pesquisa descritiva foi conduzida com o intuito de: 1.investigar a opinião de usuários sobre um instrumento de classificação de pacientes; e 2. analisar os indicadores de cuidados que mais contribuem para a classificação dos pacientes nas diferentes categorias de cuidados. A opinião dos 24 usuários foi obtida por meio de questionário. O instrumento de classificação foi aplicado em 796 pacientes em um hospital de ensino no interior do Estado de São Paulo, no período de setembro de 2006 a maio de 2007. Para o tratamento estatístico, utilizou-se a Análise de Componentes Principais (ACP e Análise Discriminante. Os usuários investigados mostraram-se satisfeitos com o instrumento utilizado, mas apontaram uma tendência do mesmo à subestimar a categoria de cuidados à qual o paciente pertence. Os resultados evidenciaram os indicadores Terapêutica, Cuidado Corporal, Educação à Saúde e Integridade Cutâneo-Mucosa como aqueles com maior capacidade discriminatória. A classificação correta dos pacientes variou de 89,8% (cuidados semi-intensivos a 95,6% (cuidados intensivos.Investigación descriptiva conducida con la intención de: 1.investigar la opinión de los usuarios con relación a un instrumento de clasificación de pacientes y 2. analizar los indicadores de cuidados que más contribuyeron para clasificar pacientes en sus diferentes categorías de cuidados. La opinión de los 24 usuarios fue obtenida a través de un cuestionario. El instrumento de clasificación fue aplicado en 796 pacientes de un hospital de enseñanza del interior de São Paulo, durante setiembre del 2006 a mayo del 2007. El análisis estadístico realizado por Análisis de Componentes Principales (ACP y Discriminativo. Los usuarios se mostraron satisfechos con el instrumento utilizado, sin embargo indicaron una tendencia del mismo para subestimar la categoría de cuidado al cual el paciente pertenece. Los resultados mostraron los indicadores: Terap

  3. Paleomagnetism and geochronological studies on a 450 km long 2216 Ma dyke from the Dharwar craton, southern India

    Science.gov (United States)

    Nagaraju, E.; Parashuramulu, V.; Kumar, Anil; Srinivas Sarma, D.

    2018-01-01

    Paleomagnetic and geochronological studies were carried out on a ∼ 450 km long (from 17 sites) N-S striking Paleoproterozoic dyke swarm exposed along a natural crustal cross section of about 10 km (increasing from North to South) in the Dharwar Craton, to study the characteristics of paleomagnetism and geochronology in vertical dimension. U-Pb/Pb-Pb dating on baddeleyite gives a crystallisation age of 2216.0 ± 0.9 Ma for long dyke AKLD. Paleomagnetic data from this well dated ∼ 2216 Ma dyke swarm in Dharwar Craton are of excellent quality. High coercivity and high blocking temperature components are carried by single domain magnetite and show dual polarity remanence directions. Combined normal and reverse polarity remanences on AKLD and other N-S dykes define the most reliable paleomagnetic pole for ∼ 2216 Ma at latitude 36°S and longitude 312°E (A95 = 7°). Though paleomagnetic data is unavailable on other N-S dykes below the Cuddapah basin, high precision geochronology suggest that they are of similar age within errors. Though there is a variation in the crustal depth of Dharwar craton from north to south, consistent Pb-Pb/U-Pb baddeleyite geochronology and paleomagnetic studies along the AKLD established its continuity and preservation along its entire strike length. The virtual geomagnetic poles of these sites confirm a stable remanence and are almost identical to the previously reported paleomagnetic pole and also supported by positive reversal test. Positive paleomagnetic reversal test on these dykes signify that the remanent magnetization is primary and formed during initial cooling of the intrusions. Updated apparent polar wander path of Dharwar craton indicates relatively low drift rate during 2.21-2.08 Ga interval. Magnetogranulometry and SEM studies show that remanent magnetization in this dyke was carried by single domain magnetite residing within silicate minerals.

  4. Precambrian Processes, the Trans-Hudson Orogen, and Cratonic Keels: Insights From Teleseismic Tomography in Northern Hudson Bay, Canada

    Science.gov (United States)

    Liddell, M. V.; Bastow, I. D.; Gilligan, A.; Kendall, J. M.; Darbyshire, F. A.

    2015-12-01

    Earth conditions in the Precambrian, and their effect upon the formation of cratons and orogenies from that era, are not fully understood. For example, the precise onset of modern plate tectonics remains ambiguous; it has been hypothesised to have begun anywhere from ~4.1Ga (Hopkins, 2008) to ~1Ga (Stern, 2005). Also, the exceptional depth to which fast wave-speed and geoid anomalies extend beneath some cratons points to the existence of thick "cratonic keels", the origin of which remains unexplained. To improve our understanding of the early Earth processes, geological evidence preserved within ancient plates that have remained largely unchanged since the Precambrian can be used. The rocks of northern Hudson Bay include Archean domains, the Paleoproterozoic Trans-Hudson Orogen (THO), and lie atop one of the largest cratonic keels on Earth (Bastow et al., 2013), making this region an ideal laboratory for study of Precambrian processes. Here, we use seismological data recorded at Canadian POLARIS and Hudson Bay Lithospheric Experiment (HuBLE) stations to perform a relative arrival-time study of northern Hudson Bay region and the THO. Waveforms are aligned using the adaptive stacking routine of Rawlinson et al. (2004), and inversions are produced using the Fast Marching Tomography (FMTOMO) inversion code of Rawlinson et al. (2006). Our inversions provide an improved velocity model of the lithosphere and upper mantle of northern Canada, suggesting updated boundaries between lithospheric blocks at mantle depths and constituting new body-wave constraints on their structure. The results are used to address a number of outstanding questions regarding the processes that formed the THO and the Laurentian Keel of North America.

  5. RIO Country Report 2015

    DEFF Research Database (Denmark)

    Grimpe, Christoph; Mitchell, Jessica

    The 2015 series of RIO Country Reports analyse and assess the policy and the national research and innovation system developments in relation to national policy priorities and the EU policy agenda with special focus on ERA and Innovation Union. The executive summaries of these reports put forward...

  6. Deep Structure and Subsidence History of Parnaíba Cratonic Basin, NE Brazil

    Science.gov (United States)

    Rodríguez Tribaldos, Verónica; White, Nicky; Coelho, Diogo; Julià, Jordi

    2017-04-01

    Cratonic sedimentary basins constitute some of the largest sedimentary basins on Earth. They are typically underlain by thick (i.e. 200 km) lithosphere and are characterized by slow, punctuated subsidence that occurs over hundreds of millions of years. Their stratigraphic records mainly consist of sequences of continental and shallow marine sedimentary rocks bounded by basin-wide erosional unconformities. Despite the importance of these basins, their origin and evolution remain poorly understood, mainly due to scarcity of well-constrained geological and geophysical data. In order to address this problem, an integrative study of the Parnaíba Cratonic basin in NE Brazil has been carried out within the framework of a multidisciplinary investigation. Here, we combine the analysis of a 1400 km long deep seismic reflection profile that crosses the basin, teleseismic earthquakes recorded by 12 broadband and 10 short-period, 3 component seismometers, 25 ancillary seismic reflection profiles, and 46 wells distributed across the basin. Our main goal is to constrain the basin's subsidence history in the context of its deep crustal structure and sedimentary architecture. Joint inversion of receiver functions and Rayleigh wave group dispersion measurements has been used to calculate 1D shear wave velocity models for crust and upper mantle beneath each seismic station. Combined interpretation of these velocity profiles and the deep seismic reflection profile has been carried out. Our results suggest Moho depths of approximately 35 km and 38 km beneath Precambrian basement east and west of the Parnaíba basin, respectively. In contrast, the Moho occurs at approximately 39 km beneath the city of Teresina, located on the eastern region of the basin, and at depths between 40 km and 42 km beneath the central and western areas of the basin. These results are combined to construct a sub-surface model underneath Parnaíba, and gravity modeling is used to test its validity. Average

  7. Tendência da mortalidade por doenças do aparelho circulatório no Brasil: 1950 a 2000 Tendencia de la mortalidad por enfermedades del aparato circulatorio en Brasil: 1950 a 2000 Mortality trends due to circulatory system diseases in Brazil: 1950 to 2000

    Directory of Open Access Journals (Sweden)

    Eduarda Ângela Pessoa Cesse

    2009-11-01

    Full Text Available FUNDAMENTO: As doenças do aparelho circulatório (DAC, um dos mais importantes problemas de saúde da atualidade, apesar de proporcionalmente ainda liderarem as estatísticas de morbi-mortalidade, começam a apresentar tendência declinante da mortalidade em diversos países. OBJETIVO: Analisar a tendência da mortalidade por DAC nas capitais brasileiras, no período de 1950 a 2000. MÉTODOS: Estudo de série temporal das razões de mortalidade padronizadas por DAC. Utilizamos dados secundários de óbitos dos anuários estatísticos do IBGE e do Sistema de Informação de Mortalidade. Realizamos análise de tendência linear das razões de mortalidade padronizadas por DAC nas capitais brasileiras que apresentaram séries completas de mortalidade, considerando os anos censitários do período do estudo (1950 a 2000. RESULTADOS: Apesar de proporcionalmente as DAC representarem a primeira causa de óbito na população brasileira, bem como apresentarem crescimento proporcional no período de análise deste estudo, o risco de óbito, representado pelas razões de mortalidade padronizadas, apresenta-se em decréscimo, particularmente a partir da década de 80. Destacam-se as cidades de Fortaleza, Salvador, Belo Horizonte, Rio de Janeiro e São Paulo, que apresentam razões de mortalidade padronizadas elevadas, porém em decréscimo (p FUNDAMENTO: Las enfermedades del aparato circulatorio (EAC, uno de los problemas más importantes de salud de la actualidad, pese a que aún lideran proporcionalmente las estadísticas de morbimortalidad, comienzan a mostrar una tendencia declinante en la mortalidad en diversos países. OBJETIVO: Analizar la tendencia de la mortalidad por EAC en las capitales brasileñas, en el período de 1950 a 2000. MÉTODOS: Estudio de serie temporal de las razones de mortalidad estandarizadas para EAC. Utilizamos datos secundarios de óbitos de los anuarios estadísticos del IBGE y del Sistema de Información de Mortalidad

  8. The new occurrence of Marinoan cap carbonate in Brazil: The expansion of snowball Earth events to the southwesternmost Amazon Craton

    Science.gov (United States)

    Gaia, Valber do Carmo de Souza; Nogueira, Afonso César Rodrigues; Domingos, Fábio Henrique Garcia; Sans-Jofre, Pierre; Bandeira, José Cavalcante da Silva; Oliveira, José Guilherme Ferreira de; Sial, Alcides Nóbrega

    2017-07-01

    Carbonate deposits exposed in the border of the Pimenta Bueno and Colorado grabens, western part of Parecis Basin, southwestern Amazon Craton, Brazil, have been previously considered as Paleozoic record. These deposits lying unconformably on Mesoproterozoic crystalline rocks, the basement of the grabens, and consist predominantly by pinkish dolomite overlying glacial diamictites, with average negative values of δ13C of -3,10‰VPDB. The contact between the dolostone and diamictites is sharp and deformed similarly with others Neoproterozoic cap carbonates occurrences in the Amazon Craton, also related to the Marinoan Glaciation (635 Ma). This new occurrence of Marinoan cap carbonate is composed by two facies associations. Facies Association 1 consists of pinkish peloidal dolostone with even parallel and quasi-planar laminations, wavy and megarriple bedding, macropeloid lenses associated with low-angle truncations, interpreted as fairwhether- and storm-influenced shallow platform deposits. Facies association 2 consists in dolostone rhythmically interbedded with shale underlaid by 5 m-thick laminated siltstones, interpreted as moderately deep platform deposits. This retrogradational succession is overlaid in angular unconformity by Early Paleozoic diamictites and locally by Mesozoic volcanic rocks. This cap carbonate precedes the Paleozoic deposits of Parecis Basin and represents a post-glacial event linked to the Marinoan glaciation, extending to the southwesternmost Amazon Craton the phenomena of the Snowball Earth hypothesis.

  9. Lithospheric thermal evolution and dynamic mechanism of destruction of the North China Craton

    Science.gov (United States)

    Li, Zian; Zhang, Lu; Lin, Ge; Zhao, Chongbin; Liang, Yingjie

    2017-09-01

    The dynamic mechanism for destruction of the North China Craton (NCC) has been extensively discussed. Numerical simulation is used in this paper to discuss the effect of mantle upward throughflow (MUT) on the lithospheric heat flux of the NCC. Our results yield a three-stage destruction of the NCC lithosphere as a consequence of MUT variation. (1) In Late Paleozoic, the elevation of MUT, which was probably caused by southward and northward subduction of the paleo-Asian and paleo-Tethyan oceans, respectively, became a prelude to the NCC destruction. The geological consequences include a limited decrease of the lithospheric thickness, an increase of heat flux, and a gradual enhancement of the crustal activity. But the tectonic attribute of the NCC maintained a stable craton. (2) During Late Jurassic-Early Cretaceous, the initial velocity of the MUT became much faster probably in response to subduction of the Pacific Ocean; the conductive heat flux at the base of the NCC lithosphere gradually increased from west to east; and the lithospheric thickness was significantly decreased. During this stage, the heat flux distribution was characterized by zonation and partition, with nearly horizontal layering in the lithosphere and vertical layering in the underlying asthenosphere. Continuous destruction of the NCC lithosphere was associated with the intense tectono-magmatic activity. (3) From Late Cretaceous to Paleogene, the velocity of MUT became slower due to the retreat of the subducting Pacific slab; the conductive heat flux at the base of lithosphere was increased from west to east; the distribution of heat flux was no longer layered. The crust of the western NCC is relatively hotter than the mantle, so-called as a `hot crust but cold mantle' structure. At the eastern NCC, the crust and the mantle characterized by a `cold crust but hot mantle.' The western NCC (e.g., the Ordos Basin) had a tectonically stable crust with low thermal gradients in the lithosphere; whereas

  10. Pan African Collisional Tectonics Along the Moroccan West African Craton Continued to Ediacaran-Cambrian Boundary

    Science.gov (United States)

    Hefferan, K. P.; Samson, S. D.; Rice, K.; Soulaimani, A.

    2016-12-01

    Precision geochronologic dating and field mapping in the Anti-Atlas Mountains of Morocco document a Neoproterozoic Pan African orogenic cycle consisting of three distinct orogenic events: Iriri-Tichibanine orogeny (760-700 Ma), Bou Azzer orogeny (680-640 Ma) and the WACadomian orogeny (620 Ma to either 555 or 544 Ma). The Iriri-Tichibanine and Bou Azzer orogenies involved northward directed subduction beneath island arc volcanic terranes. These orogenic events generated calc-alkaline magmatism and supra-subduction zone ophiolites exposed in the Bou Azzer and Siroua erosional inliers. The WACadomian orogeny involved subduction and collision of the Cadomia arc complex with the West African Craton and generation of clastic sedimentary basins. The termination of the WACadomian orogeny has been the subject of debate as calc-alkaline to high K magmatism and folding continued to 544 Ma: Was 620-544 Ma calc-alkaline to high K magmatism and clastic basin development due to a) continental rift basin tectonics or b) southward directed subduction and collisional tectonics with associated back arc basin tectonism? We present field and geochemical data supporting the continuation of subduction-collisional tectonics to the Ediacaran-Cambrian boundary 544 Ma. Field mapping in the Central Anti-Atlas (Agadir Melloul) clearly documents an angular unconformity between Ouarzazate Group and Adoudounian limestones (N 30°31'28.91", W07°48'29.12"). Volcaniclastic rocks of Ouarzazate Group (615-545 Ma) are clearly folded and unconformably overlain by Adoudou Formation (541-529 Ma) limestones to the north. Geochemical discrimination diagrams on Latest Neoproterozoic calc-alkaline to high K igneous rocks throughout the Anti-Atlas plot in subduction and collisional arc magma domains. Back arc basin tectonism is likely responsible for localized extensional basins but continental rift tectonics and passive margin sedimentation did not begin in the Anti-Atlas Mountains until Early

  11. A historical overview of Moroccan magmatic events along northwest edge of the West African Craton

    Science.gov (United States)

    Ikenne, Moha; Souhassou, Mustapha; Arai, Shoji; Soulaimani, Abderrahmane

    2017-03-01

    Located along the northwestern edge of the West African Craton, Morocco exhibits a wide variety of magmatic events from Archean to Quaternary. The oldest magmatic rocks belong to the Archean Reguibat Shield outcrops in the Moroccan Sahara. Paleoproterozoic magmatism, known as the Anti-Atlas granitoids, is related to the Eburnean orogeny and initial cratonization of the WAC. Mesoproterozoic magmatism is represented by a small number of mafic dykes known henceforth as the Taghdout mafic volcanism. Massive Neoproterozoic magmatic activity, related to the Pan-African cycle, consists of rift-related Tonian magmatism associated with the Rodinia breakup, an Early Cryogenian convergent margin event (760-700 Ma), syn-collisional Bou-Azzer magmatism (680-640 Ma), followed by widespread Ediacaran magmatism (620-555 Ma). Each magmatic episode corresponded to a different geodynamic environment and produced different types of magma. Phanerozoic magmatism began with Early Cambrian basaltic (rift?) volcanism, which persisted during the Middle Cambrian, and into the Early Ordovician. This was succeeded by massive Late Devonian and Carboniferous, pre-Variscan tholeiitic and calc-alkaline (Central Morocco) volcanic flows in basins of the Moroccan Meseta. North of the Atlas Paleozoic Transform Zone, the Late Carboniferous Variscan event was accompanied by the emplacement of 330-300 Ma calc-alkaline granitoids in upper crustal shear zones. Post-Variscan alkaline magmatism was associated with the opening of the Permian basins. Mesozoic magmatism began with the huge volumes of magma emplaced around 200 Ma in the Central Atlantic Magmatic Province (CAMP) which was associated with the fragmentation of Pangea and the subsequent rifting of Central Atlantic. CAMP volcanism occurs in all structural domains of Morocco, from the Anti-Atlas to the External Rif domain with a peak activity around 199 Ma. A second Mesozoic magmatic event is represented by mafic lava flows and gabbroic intrusions in

  12. The thermal structure of cratonic lithosphere from global Rayleigh wave attenuation

    Science.gov (United States)

    Dalton, Colleen A.; Bao, Xueyang; Ma, Zhitu

    2017-01-01

    The resolution of and level of agreement between different attenuation models have historically been limited by complexities associated with extracting attenuation from seismic-wave amplitudes, which are also affected by the source, the receiver, and propagation through velocity heterogeneities. For intermediate- and long-period Rayleigh waves, removing the amplitude signal due to focusing and defocusing effects is the greatest challenge. In this paper, three independent data sets of fundamental-mode Rayleigh wave amplitude are analyzed to investigate how three factors contribute to discrepancies between the attenuation models: uncertainties in the amplitude measurements themselves, variable path coverage, and the treatment of focusing effects. Regionalized pure-path and fully two-dimensional attenuation models are derived and compared. The approach for determining attenuation models from real data is guided by an analysis of amplitudes measured from synthetic spectral-element waveforms, for which the input Earth model is perfectly known. The results show that differences in the amplitude measurements introduce only very minor differences between the attenuation models; path coverage and the removal of focusing effects are more important. The pure-path attenuation values exhibit a clear dependence on tectonic region at shorter periods that disappears at long periods, in agreement with pure-path phase-velocity results obtained by inverting Rayleigh wave phase delays. The 2-D attenuation maps are highly correlated with each other to spherical-harmonic degree 16 and can resolve smaller features than the previous generation of global attenuation models. Anomalously low attenuation is nearly perfectly associated with continental cratons. Variations in lithospheric thickness are determined by forward modeling the global attenuation variations as a thermal boundary layer of variable thickness. Temperature profiles that satisfy the attenuation values systematically

  13. Síndrome de Burnout em trabalhadores de enfermagem de um pronto socorro de hospital universitário Síndrome de Burnout en trabajadores de enfermería del servicio de emergencia de un hospital universitario Burnout Syndrome among nursing staff from an emergency department of a hniversity hospital

    Directory of Open Access Journals (Sweden)

    Denise Albieri Jodas

    2009-01-01

    Full Text Available OBJETIVO: Investigar sinais e sintomas de burnout em trabalhadores de enfermagem de um Pronto Socorro de Hospital Universitário correlacionando-os com fatores preditores. MÉTODOS: Estudo descritivo quantitativo, com 61 trabalhadores de enfermagem. Utilizou-se um questionário estruturado, auto-aplicável, acrescido do instrumento Maslach Burnout Inventory. A análise dos dados foi feita através do Epiinfo 2004. RESULTADOS: Dos 61 trabalhadores que participaram do estudo, 8,2% apresentavam manifestações de burnout, todos do sexo feminino, 54,1% possuiam alto risco para manifestação de burnout e 37,7% eram de baixo risco de manifestação da doença. Fatores como o não reconhecimento e incentivo ao desenvolvimento profissional estão relacionados com este diagnóstico. CONCLUSÕES: A dinâmica organizacional de um Pronto Socorro gera uma sobrecarga e tensão ocupacional sendo necessário desenvolver estratégias de reorganização do processo de trabalho diminuindo fontes de estresse.OBJETIVO: Investigar signos y síntomas de burnout en trabajadores de enfermería del servicio de emergencia de un Hospital Universitario correlacionándolos con factores de predicción. MÉTODOS: Se trata de un estudio descriptivo cuantitativo, realizado con 61 trabajadores de enfermería. Se utilizó un cuestionario estructurado, auto-aplicable, además del instrumento Maslach Burnout Inventory. El análisis de los datos se realizó por medio del Epiinfo 2004. RESULTADOS: De los 61 trabajadores que participaron en el estudio, el 8,2% presentaba manifestaciones de burnout, todos del sexo femenino, el 54,1% poseía alto riesgo para manifestación de burnout y el 37,7% era de bajo riesgo de manifestación de la enfermedad. Factores como la falta de reconocimiento e incentivo al desarrollo profesional están relacionados con este diagnóstico. CONCLUSIONES: La dinámica organizacional de un servicio de emergencia genera sobrecarga y tensión ocupacional siendo

  14. Yacuiba - Rio Grande Gas Pipeline (GASYRG), in Bolivia. The development of a company and the construction of the pipeline in a regulated and competitive environment; Gasoducto Yacuiba - Rio Grande (GASYRG), in Bolivia - experiencias de la creacion de una empresa y de la construccion del gasoducto bajo las condiciones de un escenario competitivo e regulado

    Energy Technology Data Exchange (ETDEWEB)

    Loureiro, Mauro de Oliveira; Montano, Jose Ruben [Transierra S.A. (Bolivia)

    2003-07-01

    In order to fulfill contractual agreements, three Bolivian companies decided to create Transierra S.A., a gas transportation company that would increase the gas transportation capacity from the gas fields, located in the Southern part of Bolivia. The overall objective was to build and operate a gas pipeline from Yacuiba to Rio Grande in time to comply with already agreed dates to star commercial operation. The creation of the company and the construction process were conducted in a highly competitive and regulated environment. Construction completion schedules were tight; therefore, under the previously mentioned scenario, the company implemented creative strategies to achieve its goals. (author)

  15. CHEK2 1100DELC germline mutation: a frequency study in hereditary breast and colon cancer Brazilian families Mutação germinativa 1100delC no gene CHEK2: estudo da frequência em famílias brasileiras com câncer de mama e cólon hereditários

    Directory of Open Access Journals (Sweden)

    Jamile Abud

    2012-12-01

    aumentado de câncer de mama contralateral em mulheres previamente afetadas pela doença. Cerca de 5%-10% de todos os cânceres de mama e colorretais estão associados a predisposição hereditária e o seu reconhecimento é de grande importância para o aconselhamento genético e gestão do risco de câncer. OBJETIVOS: Neste estudo foi avaliada a frequência da mutação germinativa 1100delC no gene CHEK2 em 59 diferentes indivíduos brasileiros com critérios clínicos para a síndrome de câncer de mama e cólon hereditários. MÉTODO: Utilizamos como estratégia a realização do PCR de longo alcance seguido de sequenciamento. RESULTADOS: A mutação 1100delC foi encontrada em um indivíduo (1,7%, indicando que esta mutação germinativa não é comumente encontrada em famílias brasileiras com múltiplos diagnósticos de câncer de mama e câncer colorretal. CONCLUSÃO: Estes resultados devem ser confirmados em uma série maior de famílias, e estudos adicionais devem ser realizados para investigar a patologia molecular do fenótipo HBCC.

  16. Key Elements of Cratonic and Pericratonic Lithospheric Structure Revealed by Deep Seismic Reflection Profiling in North America

    Science.gov (United States)

    Brown, L. D.

    2008-05-01

    Deep seismic reflection profiling collected both by national programs (COCORP in the US; LITHOPROBE in Canada) and regional programs (e.g. GLIMPCE, CDROM,) have traversed most of the major tectonic elements of the North American craton and its Precambrian periphery. Once argued to be relatively bland in terms of reflection character, the craton has turned out to exhibit a rich diversity of fabrics and features of fundamental tectonic significance. Among the more distinctive characteristics are: 1) crustal penetrating zones of pronounced reflectivity that suggest distributed shear fabrics, a likely fingerprint of past crustal flow. The type example is the Grenville Front at the eastern edge of the Superior Province; 2) A sharp contrast in reflectivity across the Moho, exemplified by seismic reflection profiles in the Abitibi-Grenville, Superior and Slave Provinces; 3) Distinct, dipping reflections that penetrate into the mantle from the lower crust, usually interpret as fossil subduction zones; 4) Prominent reflections that delineate thin, extensive sills in the upper to mid crust; 5) Thick layered sequences that mark extensive buried volcano-sedimentary units in the peripheral platforms of the central U.S.; and 6) Apparent continuity of crustal fabrics across the Moho that argue for preservation of Precambrian tectonic structures in the upper mantle, even in Phanerozoic remobilized terranes, and/or evolution of the Moho as a phase change rather than a lithologic contrast in some areas. For the most part, the structural assemblages revealed by deep seismic reflection profiling in the North American craton support a plate tectonic regime in the Archean. Perhaps the most iconic of the deep reflection transects of cratonic North America is the SNORCLE transect of the LITHOPROBE program, which demonstrates not only the intrinsic heterogeneity of the crust and crust-mantle boundary, but a complex assemblage of mantle discontinuities that preserve tectonic fabrics well

  17. Deslocamento para o trabalho e fatores associados em industriários do sul do Brasil Desplazamiento para el trabajo y factores asociados en industriales del sur de Brasil Commuting to and from work and factors associated among industrial workers from Southern Brazil

    Directory of Open Access Journals (Sweden)

    Shana Ginar da Silva

    2012-02-01

    Full Text Available Estudo transversal visando estimar a prevalência das formas de deslocamento para o trabalho e identificar fatores associados em trabalhadores do Estado do Rio Grande do Sul. Um total de 2.265 trabalhadores responderam questionário sobre a forma de deslocamento utilizado para ir ao trabalho: caminhada/bicicleta, ônibus ou de carro/moto. Para estimar a associação entre o desfecho e variáveis sociodemográficas, ocupacionais e comportamental foi utilizada a regressão logística multinomial. O principal meio de deslocamento para o trabalho foi o ônibus (45,7%. Trabalhadores com maior condição socioeconômica tiveram maior probabilidade de deslocamento passivo.Estudio transversal buscando estimar la prevalencia de las formas de desplazamiento para el trabajo e identificar factores asociados en trabajadores del Estado do Rio Grande do Sul (sur de Brasil. Un total de 2.265 trabajadores respondieron cuestionario sobre la forma de desplazamiento utilizado para ir al trabajo: caminata/bicicleta, autobús o en carro/moto. Para estimar la asociación entre el resultado y variables sociodemográficas, ocupacionales y conductual se utilizó la regresión logística multinomial. El principal medio de desplazamiento para el trabajo fue el autobús (45,7%. Trabajadores con mayor condición socioeconómica tuvieron mayor probabilidad de desplazarse de forma pasiva.Cross-sectional study that aimed to estimate the prevalence of forms of commuting to and from work and to identify factors associated among industrial workers in the State of Rio Grande do Sul, southern Brazil. A total of 2,265 workers completed a questionnaire on the forms of commuting to and from work (walking/biking, bus or car/motorcycle. Multinomial logistic regression was used to estimate the association between the outcome and sociodemographic, occupational and behavioral variables. The main form of commuting to and from work was by bus (45.7%. Workers with higher socioeconomic

  18. Rapid isotopic changes in groundwater, upper Rio Guanajuato catchment, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Cortes, Alejandra; Durazo, Jaime [Departamento de recursos naturales, Instituto de Geofisica, Universidad Nacional Autonoma de Mexico, Mexico, D.F. (Mexico); Kralisch, Stefanie [Posgrado en Ciencias de la Tierra, Universidad Nacional Autonoma de Mexico, Mexico, D.F. (Mexico)

    2007-01-15

    Significant changes in the isotopic composition of groundwater in the upper catchment of Rio Guanajuato, Mexico, were detected in two independent sets of samplers for 3 % of the 1600 high-production wells in the area. Sampling was done in December 1998 (53 samples), and in July - August 2003 (41 samples). Average deuterium concentration did not change between 1998 and 2003 but the average oxygen-18 concentration suggested a generalized dilution from deep water from infiltrated local precipitation. This regional change occurred within 56 months, indicating a highly dynamic hydrogeologic system. Fast replenishment of aquifer storage, or non sustainable over-pumping of old aquifer reserves, are possible explanations. [Spanish] Cambios isotopicos significativos en el agua subterranea de la cuenca alta del Rio Guanajuato, Mexico, fueron detectados en dos conjuntos independientes de muestras que incluyeron al 3% de los 1600 pozos de alta produccion del area. Los muestreos se realizaron en diciembre de 1998 (53 muestras) y en julio - agosto del 2003 (41 muestras). La concentracion promedio del deuterio no cambio entre 1998 y 2003, pero la del oxigeno-18 sugiere una dilucion generalizada del agua profunda por infiltracion de la precipitacion local. Este cambio regional ocurrio dentro de 56 meses, indicando un sistema hidrogeologico muy dinamico. La rapida recuperacion del almacenamiento acuifero o el bombeo insostenible de reservas acuiferas viejas son explicaciones posibles.

  19. Geochemistry of the Madawara Igneous Complex, Bundelkhand Craton, Central India: Implications for PGE Metallogeny

    Science.gov (United States)

    Manavalan, Satyanarayanan; Singh, Surya Prakash; Balaram, Vysetti; Niranjan, Mohanty

    2015-12-01

    The southern part of the Bundelkhand craton contains a series of a E-W trending mafic and ultramafic rocks, about 40 km in length and 2-4 km wide, that occur as intrusions within the Bundelkhand Gneissic Complex (BnGC). They are confined between the Madawara- Karitoran and Sonrai-Girar shear zones. Dunite, harzburgite, lherzolite and websterite are the commonly occurring ultramafic rocks that have high MgO, Ni, Cr, PGE and low Al2O3, CaO, K2O, TiO2 and V contents, and shows peridotitic affinity. A distinct trend of crystallization from peridotite to komatiitic basalt has been inferred from geochemical plots, which also indicates the occurrence of at least two varieties among the ultramafic suite of the Madawara ultramafic complex, namely, Group I comprising dunite, spinel peridotite, harzburgite and lherzolite, and Group II consisting of pyroxenite, websterite and olivine websterite. In several places, the rocks of Group II have an intrusive relationship with Group I, and are relatively enriched in total platinum group elements (PGE ~ 300 ppb). The discrimination diagrams suggest that the PGE are enriched in low sulphur-fugacity source magma at moderate to deeper depths by high degree of partial melting of the mantle.

  20. Strong lateral variations of lithospheric mantle beneath cratons - Example from the Baltic Shield

    Science.gov (United States)

    Pedersen, H. A.; Debayle, E.; Maupin, V.

    2013-12-01

    Understanding mechanisms for creation and evolution of Precambrian continental lithosphere requires to go beyond the large-scale seismic imaging in which shields often appear as laterally homogeneous, with a thick and fast lithosphere. We here present new results from a seismic experiment (POLENET-LAPNET) in the northern part of the Baltic Shield where we identify very high seismic velocities (Vs˜4.7 km/s) in the upper part of the mantle lithosphere and a velocity decrease of ˜0.2 km/s at approximately 150 km depth. We interpret this velocity decrease as refertilisation of the lower part of the lithosphere. This result is in contrast to the lithospheric structure immediately south of the study area, where the seismic velocities within the lithosphere are fast down to 250 km depth, as well as to that of southern Norway, where there is no indication of very high velocities in the lithospheric mantle (Vs of ˜4.4 km/s). While the relatively low velocities beneath southern Norway can tentatively be attributed to the opening of the Atlantic Ocean, the velocity decrease beneath northern Finland is not easily explained with present knowledge of surface tectonics. Our results show that shield areas may be laterally heterogeneous even over relatively short distances. Such variability may in many cases be related to lithosphere erosion and/or refertilisation at the edge of cratons, which may therefore be particularly interesting targets for seismic imaging.

  1. Validez y confiabilidad del cuestionario "Prácticas de cuidado que realizan consigo mismas las mujeres en el posparto" Validez e confiabilidade do questionário "Práticas de autocuidado das mulheres durante o pós-parto" Validity and reliability of the questionnaire "Self-care practices of women during postpartum period"

    Directory of Open Access Journals (Sweden)

    Carolina Vargas Porras

    2010-06-01

    Full Text Available Todo instrumento de recolección de datos debe ser válido y confiable para que enfermería intervenga efectivamente y le permita proponer políticas de salud en búsqueda de reducir las cifras de morbimortalidad materna y perinatal. El objetivo general de la investigación fue determinar la validez y confiabilidad del cuestionario "Prácticas de cuidado que realizan consigo mismas las mujeres en el posparto". Es una investigación metodológica. La validez de contenido mediante la prueba de expertos reportó un puntaje de 0,88, la validez facial con 10 expertas y 10 mujeres en el posparto evidenció consenso de acuerdos en relación con la claridad y comprensión del cuestionario. Se realizó prueba piloto para determinar posibles ajustes. Participaron 176 mujeres lactantes en el posparto de diferentes estratos socioeconómicos, residentes en Bogotá, a quienes se les aplicó, previo consentimiento informado, un cuestionario conformado por 32 ítems. Se elaboró una base de datos en Excel y los datos se procesaron en SPSS versión 12.0. La validez de escala evidenció que es una escala corta y la validez discriminante determinó 12 ítems que tenían mayor correlación y agrupó los que tenían correlaciones bajas. La confiabilidad del cuestionario de 32 ítems presentó alfa de Cronbach de 0,59 y el cuestionario de 12 ítems alfa de Cronbach de 0,68, considerándose un puntaje aceptable y bueno en los primeros estudios de validación de un instrumento. La confiabilidad del cuestionario permea todos los procesos de validación, por lo que su interpretación debe ir de la mano del perfeccionamiento continuo de la validez.Qualquer instrumento de coleta de dados deve ser válido e confiável no intuito de garantir que a intervenção de enfermagem seja efetiva e possibilite a proposição de políticas de saúde em busca de reduzir as cifras de morbimortalidade materna e perinatal. O objetivo geral da pesquisa foi determinar a validez e

  2. Validez y confiabilidad del cuestionario “Prácticas de cuidado que realizan consigo mismas las mujeres en el posparto” Validity and reliability of the questionnaire “Self-care practices of women during postpartum period” Validez e confiabilidade do questionário “Práticas de autocuidado das mulheres durante o pós-parto”

    Directory of Open Access Journals (Sweden)

    Hernández Molina Luz Mery

    2010-04-01

    Full Text Available Todo instrumento de recolección de datos debe ser válido y confiable para que enfermería intervenga efectivamente y le permita proponer políticas de salud en búsqueda de reducir las cifras de morbimortalidad materna y perinatal. El objetivo general de la investigación fue determinar la validez y confiabilidad del cuestionario “Prácticas de cuidado que realizan consigo mismas las mujeres en el posparto”. Es una investigación metodológica. La validez de contenido mediante la prueba de expertos reportó un puntaje de 0,88, la validez facial con 10 expertas y 10 mujeres en el posparto evidenció consenso de acuerdos en relación con la claridad y comprensión del cuestionario. Se realizó prueba piloto para determinar posibles ajustes. Participaron 176 mujeres lactantes en el posparto de diferentes estratos socioeconómicos, residentes en Bogotá, a quienes se les aplicó, previo consentimiento informado, un cuestionario conformado por 32 ítems. Se elaboró una base de datos en Excel y los datos se procesaron en SPSS versión 12.0. La validez de escala evidenció que es una escala corta y la validez discriminante determinó 12 ítems que tenían mayor correlación y agrupó los que tenían correlaciones bajas. La confiabilidad del cuestionario de 32 ítems presentó alfa de Cronbach de 0,59 y el cuestionario de 12 ítems alfa de Cronbach de 0,68, considerándose un puntaje aceptable y bueno en los primeros estudios de validación de un instrumento. La confiabilidad del cuestionario permea todos los procesos de validación, por lo que su interpretación debe ir de la mano del perfeccionamiento continuo de la validez.All data collection instruments must be valid and reliable for the nurse to be able to intervene effectively enabling her to propose health policies that pursue the reduction of maternal and perinatal morbidity and mortality. The general objective of this study was to determine the validity and reliability of the

  3. Diagnóstico da tuberculose: desempenho do primeiro serviço de saúde procurado em São José do Rio Preto, São Paulo, Brasil Diagnóstico de la tuberculosis: desempeño del primer servicio de salud solicitado en São José do Rio Preto, São Paulo, Brasil Tuberculosis diagnosis and performance assessment of the first health service used by patients in São José do Rio Preto, São Paulo State, Brazil

    Directory of Open Access Journals (Sweden)

    Sílvia Helena Figueiredo Vendramini

    2013-05-01

    Full Text Available Estudo transversal com objetivo de analisar o desempenho do primeiro serviço de saúde procurado para o diagnóstico da TB pulmonar em São José do Rio Preto, São Paulo, Brasil, em 2009. Foram entrevistados 81 doentes em tratamento. Adotou-se um questionário baseado no Primary Care Assessment Tool, adaptado para atenção à TB, e o referencial de avaliação dos serviços de saúde (estrutura e processo. Os dados foram analisados mediante técnicas descritivas e análise de correspondência múltipla. O principal serviço procurado foi o Pronto Atendimento (UPA (49,4% e o que mais diagnosticou os casos de TB foi o hospital (39,5% e a atenção básica (30,9%. Os serviços especializados apresentaram associação com o melhor desempenho no diagnóstico e a UPA com o pior. A atenção básica associou-se com desempenho intermediário e fragilidades na estrutura. O alcance de uma detecção eficaz dos casos de TB nas principais portas de entrada perpassa pela melhoria na suspeição, reforçando a necessidade de investimentos da gestão na capacitação dos recursos humanos para a identificação dos sintomáticos respiratórios.Estudio transversal con el objetivo de analizar el desempeño del primer servicio de salud solicitado para el diagnóstico de la TB pulmonar en São José do Rio Preto, São Paulo, Brasil, en 2009. Se entrevistaron a 81 enfermos en tratamiento. Se adoptó un cuestionario basado en el Primary Care Assessment Tool, adaptado para atención a la TB, y el referencial de evaluación de los servicios de salud (estructura y proceso. Los datos se analizaron mediante técnicas descriptivas y análisis de correspondencia múltiple. El principal servicio solicitado fueron las urgencias (Pronto Atendimento-UPA en un 49,4% y el que más diagnosticó los casos de TB fue el hospital (39,5% y la atención primaria (30,9%. Los servicios especializados presentaron una asociación con el mejor desempeño en el diagnóstico y la UPA con el

  4. On the nature and origin of highly-refractory Archean lithosphere: Petrological and geophysical constraints from the Tanzanian craton

    Science.gov (United States)

    Gibson, S. A.; McMahon, S. C.; Day, J. A.; Dawson, J. B.

    2012-12-01

    The nature and timescales of garnet formation are important to understanding how subcontinental lithospheric mantle (SCLM) has evolved since the Archean, and also to mantle dynamics, because the presence of garnet greatly influences the density of the lower lithosphere and hence the long-term stability of thick (150 to 220 km) subcratonic lithosphere. Nevertheless, the widespread occurrence of garnet in the SCLM remains one of the 'holy grails' of mantle petrology. Garnets found in mantle xenoliths from the eastern margin of the Tanzanian Craton (Lashaine) have diverse compositions and provide major constraints on how the underlying deep (120 to 160 km) mantle evolved during the last 3 billion years. Certain harzburgite members of the xenolith suite contain the first reported occurrence of pyrope garnets with rare-earth element patterns similar to hypothetical garnets proposed to have formed in the Earth's SCLM during the Archean, prior to metasomatism [Stachel et al., 2004]. These rare ultradepleted low-Cr garnets occur in low temperature (~1050 oC) xenoliths derived from depths of ~120 km and coexist in chemical and textural equilibrium with highly-refractory olivine (Fo95.4) and orthopyroxene (Mg#=96.4). These phases are all more magnesian than generally encountered in global mantle harzburgites and diamond inclusions. The ultradepleted garnets form interconnecting networks around grains of orthopyroxene which give the rocks a banded appearance: we propose that the increase in pressure associated with cratonization may have caused isochemical exsolution of ultradepleted garnet from orthopyroxene. These unique garnets have not previously been identified in global suites of mantle xenoliths or diamond inclusions. We believe they are rare because their low concentrations of trace elements make them readily susceptible to geochemical overprinting. This highly-refractory low-density peridotite may be common in the 'shallow' SCLM but not normally brought to the

  5. Conductividad, oxígeno disuelto, PH y temperatura en el rio bermudez (Costa Rica y su relación con el uso del suelo en la cuenca (ING

    Directory of Open Access Journals (Sweden)

    Leda Castro

    2016-03-01

    Full Text Available Se examinaron los patrones de variación espacial y temporal de la conductividad, el oxígeno disuelto, el pH y la temperatura en el río Bermúdez, Valle Central, Costa Rica, durante un período de 28 meses. El uso de la tierra más común en la cuenca es el cultivo del café (53%, seguido por el uso urbano (30%, el cual aumenta conforme se desciende hacia el piso del Valle. Si bien las aguas presentan una buena calidad en el área cercana a su origen, donde el uso de la tierra que predomina corresponde a bosque o pastos, a menudo protegidos por medio de parques recreativos, el río sufre un progresivo deterioro conforme desciende y sus aguas se tornan inadecuadas para consumo humano y peligrosas para la salud de las habitantes de la cuenca. La conductividad, el pH y el oxígeno disuelto varían estacionalmente en relación con el régimen de precipitación y el aporte de las aguas de desecho. El río Bermúdez puede considerarse representativo de los ríos del Valle Central. El deterioro de sus aguas ha hecho perder mucho de su atractivo escénico, y el río no puede ser utilizado como fuente de agua potable, ni para actividades agrícolas o recreativas. Los factores contaminantes persisten pues no se ha implementado un manejo adecuado de las aguas negras, no se ha puesto en práctica la legislación existente y vigente para obligar a las industrias a disminuir la contaminación provocada por sus efluentes, y por último, la contaminación orgánica proveniente del beneficiado del café, si bien ha disminuido por la puesta en marcha de políticas institucionales con este fin, continúa siendo de gran magnitud. Las aguas del río continúan siendo utilizadas para irrigar cultivos de hortalizas en la parte baja del río, lo que representa un peligro para la salud humana.

  6. Avaliação da qualidade de vida em pacientes com escoliose idiopática do adolescente após tratamento cirúrgico pelo questionário SF-36 Evaluación de la calidad de vida en pacientes con escoliosis idiopática del adolescente después del tratamiento quirúrgico por el cuestionario SF-36 Health-related quality of life in patients with adolescent idiopathic scoliosis after surgical treatment by SF-36

    Directory of Open Access Journals (Sweden)

    Luciano Temporal Borges Cabral

    2009-09-01

    Full Text Available OBJETIVO: avaliar os pacientes com escoliose idiopática do adolescente após tratamento cirúrgico, pelo questionário SF-36, comparando-os com questionário realizado no pré-operatório. MÉTODOS: entre Fevereiro de 2004 a Março de 2006 foram selecionados 28 pacientes com escoliose idiopática do adolescente, tratados cirurgicamente pela equipe de cirurgia da coluna do Hospital Mário Covas, em Santo André. Todos os pacientes foram submetidos ao tratamento cirúrgico por via posterior e artrodese com instrumentação de terceira geração. Estes pacientes possuíam descompensação do tronco e mensuração do ângulo de Cobb maior que 50º para indicação cirúrgica. Todos eles foram submetidos ao questionário SF-36 no pré-operatório, este foi repetido em um mês, seis meses, um ano e dois anos após o tratamento cirúrgico. Foi utilizado o programa SPSS (Statistical Package for Social Sciences, versão 13.0, para a análise estatística dos casos. RESULTADOS: houve diferença estatística significante em quatro domínios do SF-36: capacidade funcional, dor, aspecto social e limitação por aspectos físicos. Nos domínios saúde mental, limitação por aspectos emocionais, vitalidade e estado geral de saúde não houve diferença estatística entre os momentos observados. CONCLUSÃO: neste estudo, os pacientes com escoliose idiopática do adolescente, submetidos a tratamento cirúrgico para correção da deformidade, obtiveram melhora da qualidade de vida em aspectos físicos avaliados por meio do questionário SF-36.OBJETIVO: evaluar los pacientes con escoliosis idiopática del adolescente después del tratamiento quirúrgico por medio del cuestionario SF-36, comparándolos con el cuestionario realizado pre operatoriamente. MÉTODOS: entre Febrero de 2004 a Marzo de 2006 fueron seleccionados 28 pacientes con escoliosis idiopática del adolescente tratados quirúrgicamente por el equipo de cirugía de la columna del Hospital Mário

  7. Marketing Contábil nos Escritórios de Contabilidade do Estado de São PauloAccounting Marketing by Accounting Offices in the State of Sao PauloMarketing Contable en los Oficinas de Contabilidad del Estado de São Paulo

    Directory of Open Access Journals (Sweden)

    SILVA, Dirceu da

    2007-01-01

    Full Text Available RESUMOEste artigo apresenta uma parte dos resultados de uma pesquisa realizada entre o último trimestre de 2004 e 1º. trimestre de 2005, para identificar como 259 escritórios de Contabilidade no Estado de São Paulo usam os instrumentos de Marketing. O trabalho combinou pesquisa empírica para identificar aspectos relevantes da realidade dos escritórios, revisão bibliográfica, e pesquisa de campo, na sua primeira etapa por meio de uma entrevista de profundidade com os sócios de cinco escritórios, e seguida do uso de um questionário com 49 assertivas, respondido pelos sócios de 259 escritórios. A revisão da literatura revelou experiências internacionais no uso do Marketing que podem contribuir para os escritórios melhorarem sua imagem perante os clientes, e para o desenvolvimento de seus negócios Os dados obtidos com os questionários foram tratados pela Estatística Descritiva e analisados com o uso da mediana, pois os dados não se mostraram aderentes à curva normal. Os resultados obtidos revelaram que o uso dos instrumentos de Marketing é intuitivo e embrionário no setor. A pesquisa fornece informações que poderão ajudar os empresários contábeis a adotar as ferramentas de Marketing como uma alternativa de valorizar seus serviços junto ao mercado, e mais um elemento de apoio ao seu negócio.ABSTRACTThis article presents a portion of the result of a research carried through between the last quarter of 2004 and the first quarter of 2005, to identify as 259 accounting services offices in the State of Sao Paulo use or not the Marketing tools. The study executed combined empirical research to identify excellent aspects about the reality of the offices, bibliographical revision, and field research, in its first stage by means of a depth interview with the partners of five offices, and later with the use of a questionnaire with 49 assertive, answered by the partners of the 259 accounting offices. The revision of literature

  8. THE STRUCTURE OF THE LITHOSPHERIC MANTLE OF THE SIBERAIN CRATON AND SEISMODYNAMICS OF DEFORMATION WAVES IN THE BAIKAL SEISMIC ZONE

    Directory of Open Access Journals (Sweden)

    A. A. Stepashko

    2013-01-01

    Full Text Available  The evolution and specific features of seismogynamics of the Baikal zones are reviewed in the context of interactions between deep deformation waves and the regional structure of the lithospheric mantle. The study is based on a model of the mantle structure with reference to chemical compositions of mantle peridotites from ophiolotic series located in the south-western framing of the Siberian craton (Fig. 1. The chemical zonation of the lithospheric mantle at the regional scale is determined from results of analyses of the heterogeneity of compositions of peridotites (Fig. 2, Table 1 and variations of contents of whole rock major components, such as iron, magnesium and silica (Fig. 3. According to spatial variations of the compositions of peridotites, the mantle has the concentric zonal structure, and the content of SiO2 is regularly decreasing, while concentrations of FeO∑ and MgO are increasing towards the centre of such structure (Fig. 4. This structure belongs to the mantle of the Siberian craton, which deep edge extends beyond the surface contour of the craton and underlies the north-western segment of the Central Asian orogenic belt.Results of the studies of peridotites of the Baikal region are consistent with modern concepts [Snyder, 2002; O’Reilly, Griffin, 2006; Chen et al., 2009] that suggest that large mantle lenses underlie the Archaean cratons (Fig. 5. The lenses are distinguished by high-density ultrabasic rocks and compose high-velocity roots of cratons which have remained isolated from technic processes. Edges of the mantle lenses may extend a few hundred kilometers beyond the limits of the cratons and underlie orogenic belts that frame the cratons, and this takes place in the south-western segment of the Siberian craton.The revealed structure of the lithospheric mantle is consistent with independent results of seismic and magmatectonical studies of the region. The Angara geoblock is located above the central part of the

  9. THE STRUCTURE OF THE LITHOSPHERIC MANTLE OF THE SIBERAIN CRATON AND SEISMODYNAMICS OF DEFORMATION WAVES IN THE BAIKAL SEISMIC ZONE

    Directory of Open Access Journals (Sweden)

    A. A. Stepashko

    2015-09-01

    Full Text Available  The evolution and specific features of seismogynamics of the Baikal zones are reviewed in the context of interactions between deep deformation waves and the regional structure of the lithospheric mantle. The study is based on a model of the mantle structure with reference to chemical compositions of mantle peridotites from ophiolotic series located in the south-western framing of the Siberian craton (Fig. 1. The chemical zonation of the lithospheric mantle at the regional scale is determined from results of analyses of the heterogeneity of compositions of peridotites (Fig. 2, Table 1 and variations of contents of whole rock major components, such as iron, magnesium and silica (Fig. 3. According to spatial variations of the compositions of peridotites, the mantle has the concentric zonal structure, and the content of SiO2 is regularly decreasing, while concentrations of FeO∑ and MgO are increasing towards the centre of such structure (Fig. 4. This structure belongs to the mantle of the Siberian craton, which deep edge extends beyond the surface contour of the craton and underlies the north-western segment of the Central Asian orogenic belt.Results of the studies of peridotites of the Baikal region are consistent with modern concepts [Snyder, 2002; O’Reilly, Griffin, 2006; Chen et al., 2009] that suggest that large mantle lenses underlie the Archaean cratons (Fig. 5. The lenses are distinguished by high-density ultrabasic rocks and compose high-velocity roots of cratons which have remained isolated from technic processes. Edges of the mantle lenses may extend a few hundred kilometers beyond the limits of the cratons and underlie orogenic belts that frame the cratons, and this takes place in the south-western segment of the Siberian craton.The revealed structure of the lithospheric mantle is consistent with independent results of seismic and magmatectonical studies of the region. The Angara geoblock is located above the central part of the

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

    Science.gov (United States)

    dos Santos Leão, Demetrius

    2013-07-01

    The aim of this article is to present part of the results obtained by the intervention made from the author's Master degree project, which consisted in the development of a set of Astronomy classes for first year of High School students from a private school in the "Distrito Federal", Brasilia, Brazil, making use of a didactical material called mini-planetarium (MP) as the main resource. Using Paulo Freire's contextualization and dialogicity ideas as a theoretical framework guided by these lessons, it was proposed to the students the assembly and application of that resource in a planetarium session. During the project, some subjects such as the apparent trajectory of stars through Brasilia's sky, the location of the cardinal points beginning from the Southern Cross constellation, the color of stars and the stars being seen from a particular place were emphasized. It was found that the students showed an improvement of their understanding about these subjects, as well as a significant excitement with the developed methodology. El objetivo de este trabajo es presentar algunos de los resultados obtenidos en el proyecto de la tesis de maestría del autor, que incluyó el desarrollo de algunas clases de Astronomía, con estudiantes del primer año del bachillerato de una escuela privada del Distrito Federal (Brasilia, Brasil), utilizando como materia prima didáctica el recurso llamado miniplanetario (MP). Utilizando como base teórica orientadora de esas clases las ideas de contextualización y dialógica de Paulo Freire, fue propuesto a los estudiantes el montaje y la utilización de este recurso en una función de planetario. Durante el proyecto, se enfatizaron asuntos tales como la trayectoria aparente de las estrellas del cielo de Brasilia, la ubicación de los puntos cardinales a partir de la constelación de la Cruz del Sur, los colores de las estrellas y las estrellas vistas desde una localidad determinada. Se constató que los estudiantes mostraron una mejora

  11. Memórias e representações sociais do Sistema Único de Saúde por seus usuários Memorias y representaciones sociales del sistema único de salud por sus usuarios Memories and social representations about the unified health system acording to the users

    Directory of Open Access Journals (Sweden)

    Caren Camargo do Espírito Santo

    2012-03-01

    Full Text Available Esse estudo tem como objetivo analisar o conteúdo das memórias e das representações do Sistema Único de Saúde (SUS desenvolvidas por seus usuários. Possui abordagem qualitativa, baseado na Teoria das Representações e Memória Sociais. Foram selecionadas 15 entrevistas de usuários da rede hospitalar e 15 da rede básica, e realizada análise de conteúdo temática. Originaram-se três categorias, porém este estudo refere-se apenas a uma categoria, denominada Representações Sociais e Memórias do SUS. Os sujeitos reconhecem o SUS como um sistema de saúde para todos. Sobressai o bom atendimento, assim como relatam as facilidades e dificuldades dos serviços de saúde. Relatam também a utilização dos serviços de saúde no setor privado e utilização do sistema de referência como um elemento facilitador. Conclui-se que a representação sobre o SUS é a universalidade e que este estudo permitiu entender como o usuário do SUS vivencia seu processo de implementação.Este estudio tiene como objetivo analizar el contenido de las memorias y representaciones del Sistema Único de Salud (SUS desarrolladas por sus usuarios. Es cualitativo, basado en la Teoría de las Representaciones y Memoria Sociales. Fueron seleccionadas 15 entrevistas de usuarios de la red de hospitales y 15 de la red básica, y se realizaron análisis de contenido temático. Originaron tres categorías, pero este estudio sólo se refiere a una, denominada Representaciones Sociales y Memorias del SUS. Los entrevistados reconocen a SUS como un sistema de salud para todos. Destacan el atendimiento adecuado, los puntos fuertes y las dificultades de los servicios de salud. Informan la utilización del sector privado de salud y del sistema de referencia como un facilitador. Concluye que la representación de SUS es la universalidad y que este estudio sirvió para comprender como el usuario vive su proceso de implementación.This study aims to analyze the content of the

  12. Stratigraphy, tectonics and detrital zircon U-Pb (LA-ICP-MS) geochronology of the Rio Preto Belt and northern Paramirim corridor, NE, Brazil

    Energy Technology Data Exchange (ETDEWEB)

    Alcantara, Davi da Costa Bezerra Gobira de; Uhlein, Alexandre; Caxito, Fabricio de Andrade; Pedrosa-Soares, Antonio Carlos, E-mail: davibgobira@hotmail.com, E-mail: auhlein@gmail.com, E-mail: facaxito@yahoo.com.br, E-mail: pedrosasoares@gmail.com [Universidade Federal de Minas Gerais (CPMTC/UFMG), Belo Horizonte, MG (Brazil). Instituto de Geociencias. Centro de Pesquisa Professor Manoel Teixeira da Costa; Dussin, Ivo, E-mail: ivodusin@yahoo.com.br [Universidade Estadual do Rio de Janeiro (UERJ), Rio de Janeiro, RJ (Brazil). Faculdade de Geologia

    2017-04-15

    Two important Proterozoic metasedimentary sequences, the Rio Preto and Santo Onofre Groups, crop out along the northwestern margin of the Sao Francisco craton and in northern Paramirim corridor, respectively. The Rio Preto Group, involved in the eponymous fold-thrust belt along the northwestern cratonic boundary, comprises the Formosa (garnet schist, quartz schist, quartzite, chlorite-sericite schist and ferriferrous quartz schist) and Canabravinha (quartzite, micaceous quartzite, metarhytmite, phylite, schist and metaturbidite) formations. The Santo Onofre Group occurs exclusively in the Paramirim corridor, and is composed of quartzite and minor carbonaceous or Mn-rich phylite. These units record sedimentation in shallow to deep-water marine settings related to rift basins, and were deformed and metamorphosed under green schist facies conditions during the Brasiliano orogeny. Here we present 427 new detrital zircon U-Pb ages, which constrain the maximum depositional ages of ca. 971 Ma for the Santo Onofre Group, ca. 912 Ma for the Canabravinha Formation, and ca. 65 Ma for the Formosa Formation of the Rio Preto Group. Our data suggests that the Santo Onofre and the Rio Preto Groups accumulated in two distinct basin settings. The latter, composed mostly of sandy rocks, would represent a relatively stable, shallow-marine shelf environment. The Rio Preto Group, with metadiamictite, quartzite, pelitic and rhythmitic rocks, represents a shallow to deep marine environment influenced by gravity flows. Both groups were probably deposited in the Late Tonian, and are potential correlatives of the lower (pre-glacial) units of the Macaubas Group of the Aracuai belt. (author)

  13. Musica e metropoli. I flussi urbani del funk carioca tra i morro, l’asfalto e il largo di Rio de Janeiro - Music and metropolis. The urban flows of carioca funk among the morro, the asfalto and the largo in Rio de Janeiro

    Directory of Open Access Journals (Sweden)

    Maurizia Tinti

    2013-12-01

    Full Text Available Since the 70’s, American funk and Miami Bass music genres have been incorporated into the soundscape of Rio de Janeiro. They crossed national boundaries and reached marginal areas of the metropolis – which I call “morro” (hills hosting the favelas – where they turned funk carioca. Along the 80’s and 90’s, this new Brazilian music genre has been subject to conflicting processes of commercialization and discrimination. Funk carioca has spread all the way to the city and in the mass media, but at the same time it has been stigmatized as a violent and dangerous borderline culture: it was reaching and endangering the “asphalt” – the way Carioca people refer to the flat areas inhabited by middle and upper social classes. From 2000 on, some social movements claimed acknowledgement of the music genre as a positive carioca feature and cultural expression, organizing funk parties (bailes funk in emblematic public places, such as Largo da Carioca. Considering funk carioca as a fluid which crossed international and national boundaries, this paper’s aim is to analyze the “urban flows” it has been drawing in the social and urban texture of Rio. It puts at stake the historical trajectory funk carioca outlined through the milieus of morro, asfalto and largo. Hence, the ethnographic and comparative description of bailes funk suggests that funk carioca has not undergone a straightforward trajectory, but a synchronic, fluid and dispersive diffusion: it finally reached the largo, but it is still present both on morro and asfalto, where bailes funk differ but still coexist.

  14. ESTRUCTURA FACTORIAL DE LOS LINEOGRAMAS DEL PSICODIAGNÓSTICO MIOKINÉTICO REREVISADO Y DIGITALIZADO (PMK-RD, S EGÚN UNA MUESTRA DE HOMBRES Y UNA MUESTRA DE MUJERES, UNIVERSITÁRIOS

    Directory of Open Access Journals (Sweden)

    Josep M. Tous

    2006-06-01

    Full Text Available ResumenEn este trabajo se ha aplicado un análisis de Componentes Principales y rotación Oblimin, a los datos obtenidos del registro gráfico de la conducta motora manual sin visión. Los datos corresponden a una muestra de la población universitaria de hombres y mujeres por separado, a la que se le ha controlado la dominancia manual. De los datos se obtienen 5 factores independientes, de los cuales sólo dos manifiestan confusión con la dominancia manual y corresponden a los trazos horizontales. Los datos ponen de manifiesto que hay una tendencia a variar la longitud del trazo con referencia al modelo propuesto. Independientemente, observamos una tendencia a desviarse de forma intencional y no intencional que está presente en las diferentes direcciones espaciales en las que la tarea ha sido realizada, además la respuesta registrada no depende del sexo, ya que se han encontrado el mismo numero de factores y la misma composición en cada uno de ellos. Estos datos mantienen la hipótesis de una disposición motora para las tendencias de conducta

  15. Síndrome do balonamento apical secundário ao uso abusivo de descongestionante nasal Síndrome del abombamiento apical secundario al uso abusivo de descongestionante nasal Apical ballooning syndrome secondary to nasal decongestant abuse

    Directory of Open Access Journals (Sweden)

    Ricardo Wang

    2009-11-01

    Full Text Available Descrevemos um caso típico de síndrome do balonamento apical em uma paciente octogenária com alteração eletrocardiográfica, de contratilidade do ventrículo esquerdo, e que apresentou recuperação da função ventricular. A paciente é portadora de rinite alérgica e fez uso excessivo de descongestionante nasal horas antes do episódio da dor.Describimos un caso típico de síndrome de abombamiento apical en una paciente octogenaria con alteración electrocardiográfica, de contractilidad del ventrículo izquierdo, y que presentó recuperación de la función ventricular. La paciente es portadora de rinitis alérgica y hace uso excesivo de descongestionante nasal horas antes del episodio del dolor.We describe a typical case of apical ballooning syndrome in an octogenarian female patient with left ventricular wall motion abnormality on electrocardiography, whose ventricular function returned to normal. The patient has allergic rhinitis and had used nasal decongestant excessively a few hours prior to the episode of pain.

  16. Magnetic fabrics and rock magnetism of the Xiong'er volcanic rocks and their implications for tectonic correlation of the North China Craton with other crustal blocks in the Nuna/Columbia supercontinent

    Science.gov (United States)

    Xu, Huiru; Yang, Zhenyu; Peng, Peng; Ge, Kunpeng; Jin, Zhenmin; Zhu, Rixiang

    2017-08-01

    The tectonic background of the Paleoproterozoic Xiong'er volcanic rocks (XVR) is important for understanding the tectonic evolution of the North China Craton (NCC), as well as its paleogeographic position during the assembly of the Nuna/Columbia supercontinent. Here we report the results of the first anisotropy of magnetic susceptibility (AMS) study of the XVR, and use the interpreted flow directions to constrain the emplacement mechanism and to assess its geological significance for the reconstruction of the Nuna/Columbia supercontinent. Thirty lavas were sampled from three sections in western Henan Province. Detailed rock magnetic analyses, including measurements of hysteresis loops, magnetization versus temperature curves and first order reverse curves, were performed to identify the main magnetic phases and grain sizes. The inferred directions from the AMS results reveal a radial flow pattern with an eruption center probably located near Xiong'er Mountain. Our data suggest that the XVR may have been emplaced in a triple-conjugated continental rift on the south margin of the NCC, probably initiated from a paleoplume. Based on this interpretation, a comparison of geological and paleomagnetic results among the proposed crustal blocks in the Nuna/Columbia supercontinent suggests a close linkage of the NCC with São Francisco-Congo, Rio de la Plate and Siberia.

  17. Cenozoic extension along the reactivated Aurora Fault System in the East Antarctic Craton

    Science.gov (United States)

    Cianfarra, Paola; Maggi, Matteo

    2017-04-01

    The East Antarctic Craton is characterized by major intracontinental basins and highlands buried under the 34 Ma East Antarctic Ice Sheet. Their formation remains a major open question. Paleozoic to Cenozoic intraplate extensional tectonic activity has been proposed for their development and in this work the latter hypothesis is supported. Here we focus on the Aurora Trench (AT) within the Aurora Subglacial Basin (latitude 75°-77°S, longitude 117°-118°E) whose origin is still poorly constrained. The AT is an over 150-km-long, 25-km-wide subglacial trough, elongated in the NNW-SSE direction. Geophysical campaigns allowed better definition of the AT physiography showing typical half-graben geometry. The rounded morphology of the western flank of the AT was simulated through tectonic numerical modelling. We consider the subglacial landscape to primarily reflect the locally preserved relict morphology of the tectonic processes affecting the interior of East Antarctica in the Cenozoic. The bedrock morphology was replicated through the activity of the listric Aurora Trench Fault, characterized by a basal detachment at 34 km (considered the base of the crust according to available geophysical interpretations) and vertical displacements ranging between 700 and 300 m. The predicted displacement is interpreted as the (partial) reactivation of a weaker zone along a major Precambrian crustal-scale tectonic boundary. We propose that the Aurora Trench Fault is the southern continuation of the > 1000 km long Aurora Fault independently recognized by previous studies. Together they form the Aurora Fault System, a long lived tectonic boundary with poly-phased tectonic history within the EAC that bounds the eastern side of the Aurora Subglacial Basin. The younger Cenozoic reactivation of the investigated segment of the Aurora Fault System relates to the intraplate propagation of far-field stresses associated to the plate-scale kinematics in the Southern Ocean.

  18. The Fazenda Largo off-craton kimberlites of Piauí State, Brazil

    Science.gov (United States)

    Kaminsky, Felix V.; Sablukov, Sergei M.; Sablukova, Ludmila I.; Zakharchenko, Olga D.

    2009-10-01

    In the late 1990s, the Fazenda Largo kimberlite cluster was discovered in the Piauí State of Brazil. As with earlier known kimberlites in this area - Redondão, Santa Filomena-Bom Jesus (Gilbues) and Picos - this cluster is located within the Palaeozoic Parnaiba Sedimentary Basin that separates the São Francisco and the Amazonian Precambrian cratons. Locations of kimberlites are controlled by the 'Transbrasiliano Lineament'. The Fazenda Largo kimberlites are intensely weathered, almost completely altered rocks with a fine-grained clastic structure, and contain variable amounts of terrigene admixture (quartz sand). These rocks represent near-surface volcano-sedimentary deposits of the crater parts of kimberlite pipes. By petrographic, mineralogical and chemical features, the Fazenda Largo kimberlites are similar to average kimberlite. The composition of the deep-seated material in the Fazenda Largo kimberlites is quite diverse: among mantle microxenoliths are amphibolitised pyrope peridotites, garnetised spinel peridotites, ilmenite peridotites, chromian spinel + chromian diopside + pyrope intergrowths, and large xenoliths of pyrope dunite. High-pressure minerals are predominantly of the ultramafic suite, Cr-association minerals (purplish-red and violet pyrope, chromian spinel, chromian diopside, Cr-pargasite and orthopyroxene). The Ti-association minerals of the ultramafic suite (picroilmenite and orange pyrope), as well as rare grains of orange pyrope-almandine of the eclogite association, are subordinate. Kimberlites from all four pipes contain rare grains of G10 pyrope of the diamond association, but chromian spinel of the diamond association was not encountered. By their tectonic position, by geochemical characteristics, and by the composition of kimberlite indicator minerals, the Fazenda Largo kimberlites, like the others of such type, are unlikely to be economic.

  19. Meso–Cenozoic lithospheric thermal structure in the Bohai Bay Basin, eastern North China Craton

    Directory of Open Access Journals (Sweden)

    Zongxing Li

    2017-09-01

    Full Text Available The Bohai Bay Basin is a region where part of the North China Craton has been thinned and destroyed. It has experienced two periods of crustal thinning that occurred during the Cretaceous and Paleogene, but investigations of its Mesozoic and Cenozoic lithospheric thermal structure are limited. Therefore, in this study, the distributions of mantle heat flow, crustal heat flow, and Moho temperatures during the Meso–Cenozoic are calculated based on analyses of the thermal history of the Bohai Bay Basin. The results indicate that the ratio of mantle heat flow to surface heat flow peaked during the late stages of the early Cretaceous and during the middle to late Paleogene. The corresponding mantle heat flow was more than 65% of the surface heat flow. Moho temperatures reached three peaks: 900–1100 °C in the late stages of the early Cretaceous; 820–900 °C in the middle to late Paleogene; and (in the Linqing Depression, Cangxian Uplift, and Jizhong Depression 770–810 °C during the early Neogene. These results reveal that the Bohai Bay Basin experienced significant geological change during the Cretaceous, including the transformation of lithospheric thermal structure from “cold mantle and hot crust” before the Cretaceous to “hot mantle and cold crust” after the Cretaceous. The results also indicate that the basin experienced two large-scale rifting events. Therefore, this work may provide the thermal parameters for further investigations of the geodynamic evolution of eastern China.

  20. 2.9 GA Magmatism in Eastern Hebei, North China Craton

    Science.gov (United States)

    Liu, P.; Guo, J.

    2016-12-01

    We report the results of a comprehensive isotopic investigation of zircons from metamorphosed volcanic rocks from Caochang village in Zunhua complex, Eastern Hebei. A detailed investigation of internal structures of zircons, combined with SIMS U-Pb and oxygen isotope analyses and ICP-MS Hf zircon analyses as well as whole-rock geochemical study revealed the previously unknown 2.9Ga magmatic event and 2.87Ga metamorphic event in Eastern Hebei. The Mesoarchean rocks include high silica rhyolites, high silica sodic rhyolites, dacites and basalts. They together constitute an ancient bimodal volcanic rock series, which may be the largest outcrop of Mesoarchean supracrustal rocks in North China craton. Low δ18O compositions and inherited cores of zircons, low Cr, Ni composition and negative Eu anomaly in whole rock geochemical characteristic, as well as the relevant study of experimental petrology indicate a genesis of shallow crustal recycling with deep hydrothermal circulation. Their lower ɛNd(t) and ɛHf(t) (close to CHUR) indicate rapid reworking of altered juvenile crust. Thus these rhyolites may be formed by remelting of young hydrothermally altered basaltic crust or altered felsic wallrocks. All the geochemical evidence and the existence of Archean potassic rhyolites as well as the bimodal volcanic rock series imply a continent rift zone setting. The existence of Mesoarchean rocks and widespread ancient inherited and detrital zircons (>2.6 Ga) imply a possible ancient continent in Eastern Hebei, not only in Caozhuang nearby but also in Zunhua-Qinglong area. They provide valuable information about the Mesoarchean magmatic evolution. Meanwhile, they may imply the mesoarchean era (especially the 2.9 Ga) represent another major magmatic event of equal importance with 2.6-2.5 Ga period, at least in the eastern block. The magmatic and metamorphic history in Eastern Hebei are far more complex than previously thought.

  1. Neoproterozoic extension in the greater dharwar craton: A reevaluation of the "betsimisaraka suture" in madagascar

    Science.gov (United States)

    Tucker, R.D.; Roig, J.-Y.; Delor, C.; Amlin, Y.; Goncalves, P.; Rabarimanana, M.H.; Ralison, A.V.; Belcher, R.W.

    2011-01-01

    The Precambrian shield of Madagascar is reevaluated with recently compiled geological data and new U-Pb sensitive high-resolution ion microprobe (SHRIMP) geochronology. Two Archean domains are recognized: the eastern Antongil-Masora domain and the central Antananarivo domain, the latter with distinctive belts of metamafic gneiss and schist (Tsaratanana Complex). In the eastern domain, the period of early crust formation is extended to the Paleo-Mesoarchean (3.32-3.15 Ga) and a supracrustal sequence (Fenerivo Group), deposited at 3.18 Ga and metamorphosed at 2.55 Ga, is identified. In the central domain, a Neoarchean period of high-grade metamorphism and anatexis that affected both felsic (Betsiboka Suite) and mafic gneisses (Tsaratanana Complex) is documented. We propose, therefore, that the Antananarivo domain was amalgamated within the Greater Dharwar Craton (India + Madagascar) by a Neoarchean accretion event (2.55-2.48 Ga), involving emplacement of juvenile igneous rocks, high-grade metamorphism, and the juxtaposition of disparate belts of mafic gneiss and schist (metagreenstones). The concept of the "Betsimisaraka suture" is dispelled and the zone is redefined as a domain of Neoproterozoic metasedimentary (Manampotsy Group) and metaigneous rocks (Itsindro-Imorona Suite) formed during a period of continental extension and intrusive igneous activity between 840 and 760 Ma. Younger orogenic convergence (560-520 Ma) resulted in east-directed overthrusting throughout south Madagascar and steepening with local inversion of the domain in central Madagascar. Along part of its length, the Manampotsy Group covers the boundary between the eastern and central Archean domains and is overprinted by the Angavo-Ifanadiana high-strain zone that served as a zone of crustal weakness throughout Cretaceous to Recent times.

  2. Cross-cultural adaptation of the Safety Attitudes Questionnaire - Short Form 2006 for Brazil Cuestionario de actitudes de seguridad: adaptación transcultural del Safety Attitudes Questionnaire - Short Form 2006 para Brasil Questionário Atitudes de Segurança: adaptação transcultural do Safety Attitudes Questionnaire - Short Form 2006 para o Brasil

    Directory of Open Access Journals (Sweden)

    Rhanna Emanuela Fontenele Lima de Carvalho

    2012-06-01

    Full Text Available The objective of this study was to perform a cross-cultural adaptation of the Safety Attitudes Questionnaire - Short Form 2006 for Brazil. The instrument was applied in six hospitals in three regions of Brazil. Content, face, and construct validity was performed. Analysis of the instrument's reliability was performed by verifying the items' internal consistency through Cronbach's alpha. The sample was composed of 1301 professionals working in clinical and surgical wards of six hospitals. Confirmatory analysis showed that the model including 41 items was satisfactory. The Portuguese version presented an alpha of 0.89. The item-total correlations among the domains were moderate to strong, except for the domain Stress Recognition. We concluded that the instrument's version adapted to Portuguese and applied in our sample is valid and reliable.El objetivo de este estudio fue el de adaptación transcultural del cuestionario Actitudes de Seguridad - Short Form 2006 para Brasil. Métodos: El instrumento fue aplicado en seis hospitales en tres regiones del Brasil. Se realizó la validez de contenido, la cara y la construcción. El análisis de confiabilidad del instrumento se realizó mediante el análisis de la consistencia interna de los ítems a través de alfa de Cronbach. Resultados: La muestra del estudio fue compuesto por 1.301 profesionales en salas clínicas y cirugía. El análisis confirmatorio mostró que el ajuste del modelo final de los 41 ítems fue satisfactorio. La versión en portugués del instrumento mostró un alfa de 0,89. Las correlaciones ítem-total entre los dominios se consideran entre moderados y fuertes, con la excepción de dominio Percepción del Estrés. Conclusión: Se concluye, que la versión adaptada del instrumento al portugués se considera válida y fiable en la muestra.O objetivo deste estudo foi realizar a adaptação transcultural do Safety Attitudes Questionnaire - Short Form 2006 para o Brasil. O instrumento

  3. A percepção do cliente em hemodiálise frente à fístula artério venosa em seu corpo La percepición del cliente en hemodiálisis delante a la fístula arterío venosa en su cuerpo The hemodyalisis client's perception about having an arteriovenous fistula

    Directory of Open Access Journals (Sweden)

    Giselle Barcellos Oliveira Koepe

    2008-01-01

    Full Text Available OBJETIVO: Identificar as percepções sensoriais dos clientes frente à fistula artério-venosa (FAV e descrevê-las a partir dos sentidos sócio comunicantes do corpo. MÉTODOS: Aplicação de técnicas criativas durante sessão de hemodiálise com cinco pacientes. Foi pedido que desenhassem algo que representasse a presença da fístula artério-venosa e em seguida foram expostas seis gravuras, cada uma com um sentido corporal, sendo argüidos sobre sentimentos provocados pela fístula artério-venosa diante de cada sentido. Os depoimentos foram gravados em fita magnética. RESULTADOS: Com a aplicação das técnicas criativas foram apontados sentimentos como tristeza, amargura e dependência, advindos da presença da fístula artério-venosa e das abordagens no convívio social. CONCLUSÃO: Ao valorizar os sentidos do paciente no convívio com a FAV, o enfermeiro redimensiona o cuidado a ele prestado.OBJETIVO: Identificar las percepciones sensoriales de los clientes frente a la fístula arteriovenosa (FAV y describirlas a partir de los sentidos sóciocomunicantes del cuerpo. MÉTODOS: Aplicación de técnicas creativas durante la sesión de hemodiálisis con cinco pacientes. Fue pedido que dibujen algo que represente la presencia de la fístula arteriovenosa y a seguir que expusieran seis grabaciones, cada una con un sentido corporal, siendo examinados sobre los sentimientos provocados por la fístula arteriovenosa frente a cada sentido. Las declaraciones fueron grabadas en cinta magnética. RESULTADOS: Con la aplicación de las técnicas creativas se apuntaron sentimientos como tristeza, amargura y dependencia, generados por la presencia de la fístula arteriovenosa y de los abordajes en la convivencia social. CONCLUSIÓN: Al valorizar los sentidos del paciente en la convivencia con la FAV, el enfermero redimensiona el cuidado que presta.OBJECTIVE: To identify the sensorial perceptions of the patients towards the arteriovenous fistula and

  4. Raising hypertensive patients' consciousness about treatment compliance Concientización del usuario hipertenso sobre la adhesión al tratamiento Conscientização do usuário hipertenso para a adesão ao tratamento

    Directory of Open Access Journals (Sweden)

    Annelita Almeida Oliveira Reiners

    2009-02-01

    Full Text Available Descriptive study with qualitative approach that aimed to understand the perspective of health professionals and hypertensive patients on their mutual interaction in the public health context, so as to analyze how this interaction contributes to non-compliance with treatment. Interviews with 15 health professionals and 10 hypertensive patients who interacted in public health units were carried out. In the interaction between the health professional and the hypertensive user, it was concluded that, in order to solve the problem of non-compliance with treatment from the part of the user, the health professional makes use of awareness strategies. In practice, however, this has occurred inappropriately and under the biomedical care model. Users, in turn, have managed treatment their own way, indicating some issues to health professionals regarding compliance.Se trata de un estudio descriptivo cualitativo, cuyos objetivos fueron comprender la perspectiva del profesional de la salud y la del usuario hipertenso sobre la interacción que ocurre entre ellos en el contexto de la salud pública, y analizar el modo en que esta interacción contribuye para la no adhesión al tratamiento. La recolección de datos se realizó por medio de entrevistas semiestructuradas con 15 profesionales de la salud y con 10 usuarios hipertensos, que interactuaban en unidades públicas de salud en el municipio de Cuiabá, estado de Mato Grosso, Brasil. Se concluyó que en la interacción entre el profesional y el usuario, para resolver el problema de la no adherencia al tratamiento, el profesional usa la estrategia de concientizar al usuario sobre la situación. Sin embargo, esto se viene realizando guiado por el modelo biomédico de atención y de una manera inapropiada. A su vez, el usuario administra el tratamiento a su manera, lo que indica, a los profesionales, una serie de cuestiones relativas a la adhesión al tratamiento.Estudo descritivo de cunho qualitativo, cujos

  5. Sleep quality of women with gynecological and breast cancer Calidad del sueño en mujeres con cáncer ginecólogo e mamario Qualidade do sono de mulheres portadoras de câncer ginecológico e mamário

    Directory of Open Access Journals (Sweden)

    Renata Furlani

    2006-12-01

    Full Text Available Subjective sleep quality has been recognized as a valuable indicator of health and quality of life. This exploratory and descriptive study aimed at describing habitual sleep quality of women suffering from gynecological and breast cancer and comparing habitual versus sleep quality during hospitalization. Twenty-five women admitted in hospital for clinical treatment of cancer completed the Pittsburgh Sleep Quality Index (PSQI within 72 hours after admission and again just before discharge. Fifty-two percent of subjects reported habitual bad sleep quality, and this proportion increased to 80% of subjects during hospital stay. Subjects indicated the following most frequent causes of night sleep disturbance: need to go to the toilet, waking up early and receiving nursing care during the night. Results point to the importance of including careful assessment of sleep quality and environment in nursing care planning for oncology patients, mainly during hospitalization.Actualmente, la calidad de sueño referida por el propio individuo es reconocida como un indicador de salud y calidad de vida. Esto estudio exploratorio y descriptivo describe la calidad habitual del sueño de mujeres con cáncer ginecológico y mamario y la confronta con la hospitalización. Se desarrolló con 25 mujeres hospitalizadas para tratamiento clínico del cáncer ginecológico. Se colectaron informaciones mediante el Pittsburgh Sleep Quality Index (PSQI y se verifico que el 52% de los sujetos poseía mala calidad del sueño habitualmente, mientras el 80% hubiera mala calidad en la hospitalización. Las orígenes de las perturbaciones del sueño nocturno apuntadas más frecuentemente fueron: usar el baño, despertarse temprano y ser cuidado por las enfermeras durante la noche. Los resultados muestran la necesidad de que el planeamiento de cuidados de enfermería para mujeres con cáncer ginecólogo incluya la evaluación de la calidad del sueño de las pacientes, inclusive en la

  6. Percepção do agente comunitário sobre o Programa Família Saudável Percepción del agente comunitario sobre el Programa Familia Saludable Perception of the community health agent about the Healthy Family Program

    Directory of Open Access Journals (Sweden)

    Stella Maris Hildebrand

    2008-06-01

    Full Text Available O objetivo é conhecer a percepção do Agente Comunitário de Saúde sobre o Programa Família Saudável a fim de identificar as potencialidades e fragilidades para mudança do modelo de atenção. Trata-se de um estudo qualitativo, realizado na unidade de Família Saudável de São Sebastião, DF. A coleta de dados consistiu na observação do processo de trabalho e entrevistas com quatro Agentes Comunitários de Saúde, analisadas com a técnica do Discurso do Sujeito Coletivo. Os resultados demonstraram que o objeto de trabalho do PSF são os problemas de saúde encontrados na comunidade, onde são desenvolvidas ações básicas cuja finalidade é descongestionar serviços de saúde. Conclui-se que o Programa Família Saudável caminha em direção a mudanças, sobretudo porque possibilita a criação de vínculo com a comunidade.El objetivo es conocer la percepción del Agente Comunitario de Salud sobre el Programa Familia Saludable, con el fin de identificar las potencialidades y fragilidades para cambios en el modelo de atención. Se trata de un estudio cualitativo, realizado en la unidad de Familia Saludable de São Sebastião, Distrito Federal. La obtención de datos consistió en la observación del proceso de trabajo y en entrevistas con cuatro Agentes Comunitarios de Salud, analizadas con la técnica del Discurso del Sujeto Colectivo. Los resultados demostraron que el objeto de trabajo del Programa Familia Saludable consiste en los problemas de salud de la comunidad. Se desarrollan acciones básicas, cuya finalidad es descongestionar los servicios de salud. Se concluye que el Programa Família Saludable camina en dirección a cambios, sobre todo porque posibilita la creación de vínculos con la comunidad.This study aims at investigating the perceptions of the Community Health Agent regarding the Healthy Family Program in order to identify strengths and weaknesses, for changing the health care attention model. This is a qualitative

  7. Eficácia do emprego da metadona ou da clonidina no intraoperatório para controle da dor pós-operatória imediata após uso de remifentanil Eficacia del empleo de la metadona o de la clonidina en el intraoperatorio para control del dolor postoperatorio inmediato después del uso de remifentanil Efficacy of intraoperative methadone and clonidine in pain control in the immediate postoperative period after the use of remifentanil

    Directory of Open Access Journals (Sweden)

    Ricardo Francisco Simoni

    2009-08-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Por suas características farmacocinéticas, o remifentanil não promove efeito analgésico residual no pós-operatório imediato. O objetivo deste estudo foi comparar a eficácia da metadona e da clonidina no controle da dor pós-operatória de intervenções cirúrgicas videolaparoscópicas sob anestesia venosa total com infusão alvo-controlada de remifentanil. MÉTODO: Participaram deste estudo aleatório, duplamente encoberto e placebo-controlado, 126 pacientes com idade entre 18 e 65 anos, ASA PS 1 e 2 de ambos os sexos, que estavam previamente programados para a realização de intervenções cirúrgicas laparoscópicas. Após venopunção, os pacientes receberam por via venosa cetoprofeno e dipirona. A indução e manutenção da anestesia foram realizadas com infusão alvo-controlada de remifentanil e propofol. Antes do início da operação, os pacientes recebiam por via venosa a solução contendo metadona 0,1 mg.kg-1 (grupo metadona, clonidina 2,0 ¼g.kg-1 (grupo clonidina ou solução fisiológica a 0,9% (grupo placebo. Na sala de recuperação pós-anestésica, a dor pós-operatória foi avaliada através da escala numérica verbal (ENV. Foi considerado paciente sem dor quando a ENV 3. RESULTADOS: A incidência de dor no grupo metadona foi significativamente menor em relação ao grupo clonidina e grupo placebo (11, 21 e 23, respectivamente; p JUSTIFICATIVA Y OBJETIVOS: El remifentanil, por sus características farmacocinéticas, no genera un efecto analgésico residual en el postoperatorio inmediato. El objetivo de este estudio fue comparar la eficacia de la metadona y de la clonidina en el control del dolor postoperatorio de intervenciones quirúrgicas videolaparoscópicas bajo anestesia venosa total con infusión objeto controlada de remifentanil. MÉTODO: Participaron en este estudio aleatorio, doble ciego y placebo-controlado, 126 pacientes con una edad entre los 18 y los 65 años, ASA PS 1 y 2 de

  8. Crustal structure of the Carpathian orogen from receiver function analysis: how craton subduction and active delamination affect the crust

    Science.gov (United States)

    Petrescu, Laura; Tataru, Dragos; Grecu, Bogdan

    2017-04-01

    The Carpathian arc is an uncommon curved collisional system, involving the subduction of the Eastern European craton and the Proterozoic Moesian platform beneath younger European microplates. The Cenozoic collision led to the closure of the Tethys Oceanic basin, portions of which are actively breaking off or delaminating beneath the orogen, generating deep mantle earthquakes. Neogene volcanism, possibly related to subduction slab roll-back, also formed a band of presently extinct volcanoes in the back-arc region. The Carpathian embayment is thus an ideal laboratory to investigate crustal processes related to subduction of cratonic material, multiple plate junctions and active delamination. To better understand how the crustal structure changes from the Eastern European cratonic foreland, across the curved subduction zone, to the younger European microplates, we analyse teleseismic earthquakes recorded at broadband seismic stations located across eastern and southern Carpathians, in Romania and Moldova. We processed data from permanent seismic networks (The Romanian National Seismic Network) as well as data from temporary deployments such as CALIXTO (Carpathian Arc Lithosphere X-Tomography) and SCP (South Carpathian Project). Using extended multi-taper spectral division, we compute and analyse radial and transverse receiver functions. Energy on the transverse component may be an indicator of crustal anisotropy or the existence of intracrustal dipping interfaces. Using phase-weighted H-k stacking of receiver functions, we estimate the crustal thickness and the bulk crustal Poisson's ratio as well as the seismic sharpness of the Moho discontinuity. Furthermore, we invert receiver functions to obtain the S-wave velocity structure of the crust and upper mantle beneath individual stations, which provide concurrent information on the Moho nature. Our results provide a better understanding of crustal structure across complex collisional systems involving the subduction of

  9. New Precambrian paleomagnetic and geochronological results from the North China Craton and their implications for supercontinent Nuna reconstruction

    Science.gov (United States)

    Zhang, S.

    2013-05-01

    A recent update of available global paleomagnetic data demonstrate that a coherent Nuna formed by ca. 1.75 Ga, and lasted till at least ca. 1.4 Ga (Zhang et al, 2012). This paleomagnetism-based reconstruction of Nuna is also in agreement with those proposed, geologically based models, including the SAMBA connection between Baltica, Amazonia and Western Africa (Johansson, 2009), the Nuna core connection between Laurentia, Baltica and Siberia (Evans and Mitchell, 2011), the proto-SWEAT connection between Laurentia, Mawson block and Australian blocks (Payne et al., 2009) and the NCB-India connection (Zhao et al., 2011). The North China Craton (NCC) is positioned by superimposing its four high quality poles between 1.78 Ga and ~1.44 Ga atop coeval poles from the combined cratonic assemblage, including Laurentia, Baltica, Siberia and Australian blocks. In this reconstruction, the present south margin of the NCB represented an active continental margin in Nuna and likely faced an open ocean, whilst its north margin was connected to a large landmass. Recently, Su et al (2012) reported a precise age of 1611±8 Ma (zircon U-Pb LA-MC- ICPMS) obtained from a tuff bed in the Luoyukou Formation in western Henan Province. This age suggested that two high quality paleomagnetic poles from the Baicaoping and Yunmengshan formations in this region, which were considered as of 1.2-1.3 Ga, should be of ~1.61 - 1.78 Ga. Although with poor age constraint, the two poles also support the NCC's position in the Nuna. In addition, new paleomagnetic results have been obtained from the well dated ~1.33 Ga mafic sills in the northern NCC (Zhang et al, 2011; Chen et al, 2013). However, because there is no coeval pole from other major cratons, whether the NCC had still connected with them is not conclusive.

  10. 2480 Ma mafic magmatism in the northern Black Hills, South Dakota: A new link connecting the Wyoming and Superior cratons

    Science.gov (United States)

    Dahl, P.S.; Hamilton, M.A.; Wooden, J.L.; Foland, K.A.; Frei, R.; McCombs, J.A.; Holm, D.K.

    2006-01-01

    The Laramide Black Hills uplift of southwest South Dakota exposes a Precambrian crystalline core of ???2560-2600 Ma basement granitoids nonconformably overlain by two Paleoproterozoic intracratonic rift successions. In the northern Black Hills, a 1 km thick, layered sill (the Blue Draw metagabbro) that intrudes the older rift succession provides a key constraint on the timing of mafic magmatism and of older rift-basin sedimentation. Ion microprobe spot analyses of megacrysts of magmatic titanite from a horizon of dioritic pegmatite in the uppermost sill portion yield a 207Pb/206Pb upper-intercept age of 2480 ?? 6 Ma (all age errors ??2??), comparable to two-point 207Pb/206Pb errorchron ages obtained by Pb stepwise leaching of the same titanites. Nearly concordant domains in coexisting magmatic zircon yield apparent spot ages ranging from 2458 ?? 16 to 2284 ?? 20 Ma (i.e., differentially reset along U-Pb concordia), and hornblende from an associated metadiorite yields a partially reset date with oldest apparent-age increments ranging between 2076 ?? 16 and 2010 ?? 8 Ma. We interpret these data as indicating that an episode of gabbroic magmatism occurred at 2480 Ma, in response to earlier rifting of the eastern edge of the Wyoming craton. Layered mafic intrusions of similar thickness and identical age occur along a rifted belt in the southern Superior craton (Sudbury region, Ontario). Moreover, these mafic intrusions are spatially aligned using previous supercontinent restorations of the Wyoming and Superior cratons (Kenorland-Superia configurations). This new "piercing point" augments one previously inferred by spatial-temporal correlation of the Paleoproterozoic Huronian (southern Ontario) and Snowy Pass (southeastern Wyoming) supergroups. We propose that layered mafic intrusions extending from Nemo, South Dakota, to Sudbury, Ontario, delineate an axial rift zone along which Wyoming began to separate from Superior during initial fragmentation of the Neoarchean

  11. Saghro Group in the Ougnat Massif (Morocco), an evidence for a continuous Cadomian basin along the northern West African Craton

    Science.gov (United States)

    Michard, André; Soulaimani, Abderrahmane; Ouanaimi, Hassan; Raddi, Youssef; Aït Brahim, Lahsen; Rjimati, Ech-Cherki; Baidder, Lahssen; Saddiqi, Omar

    2017-03-01

    The Saghro Group (SG) is a folded, low-grade volcano-sedimentary series up to 8 km thick that crops out within and to the north of the Pan-African suture zone in the central and eastern Anti-Atlas. Here we describe the SG of the Ougnat inliers that are exposed in the easternmost Anti-Atlas beneath the unconformable, Late Ediacaran Ouarzazate Group (OZG) volcanic rocks. The Ougnat SG mostly consists of volcaniclastic greywackes accumulated in a peritidal-to-shallow basin. The basin infilling was deformed by NNE-trending, mostly upright folds with axial-planar slaty cleavage and low-grade metamorphism. The deformed SG rocks were intruded by the ∼550 Ma Mellab hypovolcanic granodiorite. The latter also crosscuts the lowest OZG rocks that are dated to 574-571 Ma in the western Saghro region. The SG rocks that form the Siroua and Saghro inliers have an oldest age of 620-610 Ma and were folded at ∼610-580 Ma at the onset of the Cadomian orogenic events. We show that the SG rocks are similar to the ;Série verte; (SV) rocks that are exposed in the Ougarta and western Hoggar east of the Pan-African suture. We infer that the SG and SV rocks accumulated in a same, continuous basin that was bounding the West African Craton to the north and the east. This strongly subsiding basin formed close to a volcanic arc and was folded during the last Pan-African synmetamorphic events. Fold orientation and age of folding differ however along the edge of the West African Craton. The orogenic greywackes that form the remnants of the SG-SV basin thus constitute a precious record of the diachronic Cadomian event s.l. along the West African Craton northern margin.

  12. Reprodutibilidade e validade relativa do Questionário de Frequência Alimentar do ELSA-Brasil Reproducibilidad y validez relativa del Cuestionario de Frecuencia Alimentaria del ELSA-Brasil Reproducibility and relative validity of the Food Frequency Questionnaire used in the ELSA-Brasil

    Directory of Open Access Journals (Sweden)

    Lívia Manato

    2013-02-01

    Full Text Available Avaliou-se a reprodutibilidade e a validade do Questionário de Frequência Alimentar (QFA utilizado no Estudo Longitudinal de Saúde do Adulto (ELSA-Brasil. Foram aplicados três registros alimentares e um QFA em dois momentos no período de um ano (n = 281. Valores de energia e nutrientes dos registros alimentares foram deatenuados e Log transformados. Para avaliação da reprodutibilidade e validade foi aplicado o teste de correlação intraclasse (CCI e calculados percentuais de concordância do consumo de nutrientes após categorização por tercis. Na avaliação da reprodutibilidade, coeficientes de CCI variaram de 0,55-0,83 para proteína e vitamina E, respectivamente; na avaliação da validade, variaram de 0,20-0,72 para selênio e cálcio, respectivamente. Concordâncias exata e adjacente entre métodos variaram de 82,9% para vitamina E a 89% para lipídio e cálcio (média = 86%. Foi encontrada uma discordância média de 13,6%. Conclui-se que o QFA ELSA-Brasil apresenta confiabilidade satisfatória para todos nutrientes e validade relativa razoável para energia, macronutrientes, cálcio, potássio e vitaminas E e C.Se evaluó la reproducibilidad y la validez del Cuestionario de Frecuencia Alimentaria (QFA, utilizado en el Estudio Longitudinal de Salud de Adultos (ELSA-Brasil. Se aplicaron tres registros alimentarios y un QFA en dos momentos durante el período de un año (n = 281. Valores de energía y nutrientes de los registros alimentarios se realizaron sin atenuación y log transformados. Para la evaluación de la reproducibilidad y validez se aplicó el test de Correlación Intraclase (CCI y se calcularon los porcentajes de concordancia del consumo de nutrientes tras la categorización por terciles. En la evaluación de la reproducibilidad, coeficientes de CCI variaron de 0,55-0,83 en el caso la proteína y vitamina E, respectivamente; en la evaluación de la validez, variaron de 0,20-0,72 en el selenio y calcio

  13. FRACCIONES DE CARBONO ORGÁNICO OXIDABLE Y AGREGACIÓN DEL SUELO EN DIFERENTES ÁREAS EN LOS SISTEMAS DE PRODUCCIÓN ORGÁNICA, RIO DE JANEIRO, BRASIL

    Directory of Open Access Journals (Sweden)

    Arcângelo Loss

    2011-05-01

    Full Text Available La forma como se gestionan los recursos orgánicos aplicados al suelo puede influir las propiedades de éste. Este estudio tuvo como objetivo evaluar el grado de oxidación del carbono orgánico y las tasas de agregación del suelo en sistemas con manejo orgánico y diferentes cultivos de cobertura. Los sistemas seleccionados fueron formas de cultivo y cubierta vegetal: labranza tradicional del suelo (maíz-CT, labranza cero (berenjena-NT, consorcio maracuyá - Desmodium sp, cultivo de higos, agroforestales (AFS y bosque secundario. Se colectaron muestras de suelo a profundidades de 0-5 y 5-10 cm en todos ellos. Se cuantificó el carbono orgánico total (TOC y se realizó su fraccionamiento, para separar el carbono en cuatro fracciones (F1, F2, F3 y F4, con grados decrecientes de oxidación, mediante el uso de cantidades crecientes de ácido sulfúrico. Se determinó la estabilidad de agregados en húmedo mediante peso medio de diámetro (MWD, diámetro medio geométrico (GMD y el índice de sensibilidad (SI. El área bajo cultivo de maíz mostraron menores niveles de TOC y el índice de agregación, en las dos profundidades estudiadas. Si bien los ámbitos de la berenjena y el higo mostraron niveles más altos en el TOC de 0-5 cm de profundidad, y MWD en la profundidad de 5-10 cm. Valores de SI más de 1 se encontraron en las áreas del higo y maracuyá. En general, la fracción F1 representados la mayoría de los TOC y en todos los ámbitos, tanto en las profundidades estudiadas. El SAF tiene la proporción más baja del COT en las cuatro fracciones (0-5 cm. El área de berenjena (0-5 cm mostraron mayores niveles de carbono en las fracciones F1, F2 y F3. Sin embargo, la profundidad de 5-10 cm, este comportamiento se observó para el área de cultivo de maíz, excepto para la fracción F1. Los resultados indican que la dirección adoptada en el área de ma

  14. Labor del Médico Veterinario en transferencia tecnológica en tres sectores de la comuna de Rio Bueno, Chile (1984-1994) Role of the veterinarian in Technological Transfer in three areas of Chile (1984-1994)

    OpenAIRE

    F. MARQUEZ; R. TAMAYO; N. VALENZUELA

    1999-01-01

    Se realizó un análisis de la labor que el médico veterinario de terreno prestaba a 57 agricultores pertenecientes a los sectores de Cachillahue, Cayurruca y Pindaco de la comuna de Río Bueno, adscritos al Programa de Transferencia Tecnológica Etapa II de INDAP. Para esto se utilizó la información contenida en dos documentos. Una, que corresponde a los "Informes Médico Veterinario", confeccionados las temporadas 1991 a 1994 y otra que corresponde a la "Hoja de Visita del Médico Veterinario", l...

  15. TRANSFORMACIONES AGROPRODUCTIVAS E INDICADORES DE SUSTENTABILIDAD EN LA CUENCA DEL RIO QUEQUÉN GRANDE (PROVINCIA DE BUENOS AIRES, ARGENTINA), DURANTE LOS PERÍODOS 1988-1998 Y 1998-2008

    OpenAIRE

    PATRICIA VAZQUEZ; MÓNICA SACIDO; LAURA ZULAICA

    2012-01-01

    La región pampeana posee fuertes ventajas comparativas para la producción agropecuaria. Los modelos productivos actuales incluyen la siembra directa con aumento en el uso de agroquímicos y el avance de la agricultura ha generado una fuerte fragmentación de los pastizales naturales. El objetivo de este trabajo es analizar las transformaciones agroproductivas en la Cuenca del río Quequen Grande (situada en la Pampa Austral) y sus principales consecuencias durante los períodos 1988-1998 y 1998-2...

  16. Descalce de las distancias mentales: Infraestructura para bicicletas como integración de imaginarios a nivel etário en los habitantes del Gran Valparaíso

    Directory of Open Access Journals (Sweden)

    Rodrigo Alejandro Cofre Ruz

    2015-07-01

    Full Text Available Resumen La vida urbana del habitante está dada en un constante movimiento, desde la aproximación doméstica a la relación que tiene este en la ciudad. Una movilidad que se basa en distancias, que traen consigo fragmentos, recuerdos y dibujos concebidos como imágenes mentales que configuran a su vez una distancia mental. El estudio de las distancias mentales dependerá de una identificación de habitantes, que en un mismo contexto tienen una visión distinta del territorio y al momento de no cumplirse causa segregación socio -espacial como no pertenencia a la morfología del habitante. Desde este punto de vista se abordará la ciudad con las distancias mentales desde un calce y descalce constante en la morfología del gran Valparaíso. Ante esta configuración de distancias físicas, la presente investigación busca a través de un medio de transporte, dar cabida a imaginarios urbanos que estén bajo control espacial en todo momento y puedan complementarse al uso de otras movilidades urbanas. El entendimiento de las distancias urbanas a través de la infraestructura para usuarios con movilidad no motorizada, en este caso, la bicicleta. Abstract The inhabitant’s urban life is in constant movement, from the domestic approach to the relationship he has with the city. A mobility based on distances, that bring to mind fragments, memories and drawings conceived as mental images that, at the same time shape a mental distance. The study of mental distances will depend on inhabitants’ identification that have a different view of the territory in the same context and when not met, causes a socio-spatial segregation as a lack of belonging to the inhabitant’s morphology. The city will be approached from this point of view, with mental distances from a consistent match and mismatch in the great Valparaíso morphology. Given this configuration of physical distances, this research seeks through a means of transportation, to accommodate urban

  17. Aliança da enfermagem com o usuário na defesa do SUS Alianza de la enfermería con el usuario en la defensa del SUS Nursing partnership with users in the defense of SUS

    Directory of Open Access Journals (Sweden)

    Carla Aparecida Arena Ventura

    2012-12-01

    Full Text Available Estudo reflexivo com o objetivo de apresentar, na perspectiva dos direitos humanos, elementos relevantes para o cuidado de enfermagem na defesa dos sujeitos no contexto do Sistema Único de Saúde (SUS brasileiro. A saúde como um direito de todos e um dever do Estado materializou-se como uma conquista da população com o SUS, com os princípios de universalidade, integralidade e equidade da atenção em saúde, ampliando a concepção de saúde para além da ausência de doença e passando a ser entendida como qualidade de vida. O enfermeiro tem grande potencial para desempenhar um papel singular na defesa do direito à saúde e do direito à vida e, por meio de alianças, fortalecer o exercício da cidadania das pessoas.Estudio reflexivo con el objetivo de presentar, en la perspectiva de los derechos humanos, elementos relevantes para el cuidado de enfermería en la defensa de los sujetos en el contexto del Sistema Único de Salud (SUS brasileño. La salud como un derecho de todos y un deber del Estado se ha consolidado como una conquista de la población con él SUS, con los principios de universalidad, integralidad y equidad de atención en salud, ampliando la concepción de salud para además de ausencia de enfermedades y que pasó a ser comprendida como calidad de vida. El enfermero tiene grande potencial para desarrollar un rol singular en la defensa del derecho a salud y del derecho a vida y, por medio de alianzas, fortalecer el ejercicio de la ciudadanía de las personas.This reflexive study aimed at presenting, based on the human rights framework, relevant elements for nursing care in the defense of the users of the Brazilian Single Health System (SUS. The assurance of health as a fundamental right and a government´s responsibility was an achievement of the population through SUS, founded on the principles of universal, integral and equitable care, expanding the conception of health beyond the idea of the lack of disease, understood

  18. Geology, mineralization, and geochronology of the Qianhe gold deposit, Xiong'ershan area, southern North China Craton

    Science.gov (United States)

    Tang, Ke-Fei; Li, Jian-Wei; Selby, David; Zhou, Mei-Fu; Bi, Shi-Jian; Deng, Xiao-Dong

    2013-08-01

    The Qianhe gold deposit in the Xiong'ershan area is located along the southern margin of the Archean-Paleoproterozoic North China Craton. The deposit consists of six orebodies that are hosted in Paleoproterozoic andesites to basaltic andesites and structurally controlled by roughly EW-trending faults. Individual orebodies comprise auriferous quartz veins and disseminated Au-bearing pyrite within hydrothermally altered rocks on both sides of, or close to, the veins. Ore-related hydrothermal alteration has produced various mixtures of K-feldspar, quartz, sericite, chlorite, epidote, carbonate, and sulfides. Pyrite is the most important ore mineral, associated with minor amounts of galena, sphalerite, and chalcopyrite. Other trace minerals include molybdenite, arsenopyrite, scheelite, rutile, xenotime, and parisite. Gold occurs mostly as native gold and electrum enclosed in pyrite or along microfractures of sulfides and quartz. Microthermometric measurements of primary inclusions in auriferous quartz suggest that gold and associated minerals were precipitated in the range of 160-305 °C from aqueous or carbonic-aqueous fluids with salinities of 6-22 wt% NaCl equiv. Samples of molybdenite coexisting with Au-bearing pyrite have Re-Os model ages of 134-135 Ma, whereas ore-related hydrothermal sericite separates yield 40Ar/39Ar plateau ages between 127 and 124 Ma. The Re-Os and 40Ar/39Ar ages are remarkably consistent with zircon U-Pb ages (134.5 ± 1.5 and 127.2 ± 1.4 Ma; 1 σ) of the biotite monzogranite from the Heyu-intrusive complex and granitic dikes in and close to the Qianhe gold mine, indicating a close temporal and thus possibly genetic relationship between gold mineralization and granitic magmatism in the area. Fluid inclusion waters extracted from auriferous quartz have δD values of -80 to -72 ‰, whereas the calculated δ 18OH2O values range from 3.1 to 3.8 ‰. The hydrogen and oxygen isotopes from this study and previous work indicate that ore fluids

  19. Crustal structure of the Siberian craton and the West Siberian basin: An appraisal of existing seismic data

    DEFF Research Database (Denmark)

    Cherepanova, Yulia; Artemieva, Irina M.; Thybo, Hans

    2013-01-01

    We present a digital model SibCrust of the crustal structure of the Siberian craton (SC) and the West Siberian basin (WSB), based on all seismic profiles published since 1960 and sampled with a nominal interval of 50 km. Data quality is assessed and quantitatively assigned to each profile based...... on acquisition and interpretation method and completeness of crustal model. The database represents major improvement in coverage and resolution and includes depth to Moho, thickness and average P-wave velocity of five crustal layers (sediments, and upper, middle, lower, and lowermost crust) and Pn velocity...

  20. Anisotropic Lithospheric layering in the North American craton, revealed by Bayesian inversion of short and long period data

    Science.gov (United States)

    Roy, C.; Calo, M.; Bodin, T.; Romanowicz, B. A.

    2016-12-01

    Competing hypotheses for the formation and evolution of continents are highly under debate, including the theory of underplating by hot plumes or accretion by shallow subduction in continental or arc settings. In order to support these hypotheses, documenting structural layering in the cratonic lithosphere becomes especially important. Studies of seismic-wave receiver function data have detected a structural boundary under continental cratons at 100-140 km depths, which is too shallow to be consistent with the lithosphere-asthenosphere boundary, as inferred from seismic tomography and other geophysical studies. This leads to the conclusion that 1) the cratonic lithosphere may be thinner than expected, contradicting tomographic and other geophysical or geochemical inferences, or 2) that the receiver function studies detect a mid-lithospheric discontinuity rather than the LAB. Recent studies (Bodin et al., 2015, Calo et al. 2016) confirmed the presence of a structural boundary under the north American craton at 100-140 km depths by taking advantage of the power of a trans-dimensional Monte Carlo Markov chain (TMCMC). They generated probabilistic 1D radially shear wave velocity profiles for selected stations in North America by jointly inverting 2 different data types (PS Receiver Functions, surface wave dispersion for Love and Rayleigh waves), which sample different volumes of the Earth and have different sensitivities to structure. The resulting 1D profiles include both isotropic and anisotropic discontinuities in the upper mantle (above 350 km depth). Here we extend this approach and include the vp/vs ratio as an unknown in the TMCMC algorithm to avoid artificial layers induced by multiples of the receiver functions. Additionally, we include SKS waveforms in the joint inversion and invert for azimuthal anisotropy to verify if layering in the anisotropic structure of the stable part of the North American continent involves significant changes in the direction of

  1. Uma Proposta de Atendimento às necessidades de informação dos usuários da biblioteca escolar por meio do benchmarking e do sensemaking Una propuesta de asistencia a las necesidades de información de los usuarios de la biblioteca escolar por medio del benchmarking y del sensemaking

    Directory of Open Access Journals (Sweden)

    Lizandra Brasil Estabel

    2010-09-01

    Full Text Available Este artigo apresenta uma proposta de discussão a respeito da qualidade nos serviços de infor­mação, a construção do conhecimento focada no usuário e considerações acerca da utilização da comparação de informações na busca por excelência. Aborda os processos de busca, tratamento, utilização e comparação de informações para a verificação da qualidade dos serviços prestados aos usuários das bibliotecas, enfocando a aplicação de benchmarking e do sensemaking para qualificar os serviços das bibliotecas e atender aos usuários nas suas necessidades de busca da informação. Caracteriza-se como uma contribuição aos bibliotecários, possibilitando uma reflexão a respeito da necessidade de novas atitudes, que incluam a interação com os usuários na verifi­cação do processo de busca de informação no espaço da biblioteca, na interpretação do sentido, na construção do conhecimento e na tomada de decisão a fim de tornar os serviços de informação qualificados e acessíveis para todos.

  2. Nursing teamwork and time to respond to call lights: an exploratory study Trabajo en equipo y tiempo de respuesta al timbre del paciente: un estudio exploratorio Trabalho em equipe e tempo de resposta às chamadas de enfermagem: estudo exploratório

    Directory of Open Access Journals (Sweden)

    Beatrice Jean Kalisch

    2013-02-01

    Enfermería fue utilizado con el personal de enfermería de tres hospitales. Además de la puntuación total, el instrumento cuenta con 5 sub-escalas. El tiempo de respuesta al timbre del paciente fue registrado en los sistemas informáticos que miden el tiempo necesario para que el personal de enfermería de una determinada unidad atienda a la llamada del timbre del paciente. RESULTADOS: No hubo relación significativa entre el tiempo de respuesta al timbre y el puntaje global del trabajo en equipo o los puntajes de las cinco sub-escalas. Mientras tanto, modelos mentales compartidos, que comprenden el entendimiento conceptual de los papeles y responsabilidades de cada miembro del equipo, fueron moderadamente correlacionados con el tiempo de respuesta al llamado del timbre. CONCLUSIONES: Es lógico que los modelos mentales compartidos estén asociados al tiempo de respuesta al llamado, ya que un problema común en unidades de internación es el "síndrome de ese no es mi trabajo", en el cual el personal de enfermería no responde al timbre de los pacientes que no tienen asignados. Se necesita de más investigaciones en un número mayor de unidades de internación de pacientes para validar estos resultados.OBJETIVO: o objetivo deste estudo exploratório foi determinar se o nível de trabalho em equipe de enfermagem está correlacionado ao tempo de resposta às chamadas de pacientes, em unidades de hospitais de tratamento intensivo. Antecedentes: tem sido reportado que o trabalho em equipe melhora a produtividade. A relação entre o tempo de resposta às chamadas de enfermagem foi examinada neste estudo como uma medida da produtividade e do nível de trabalho em equipe, na unidade. MÉTODO: o Nursing Teamwork Survey foi administrado nas equipes de enfermagem de 18 unidades de internação, em três hospitais. Além da pontuação global do trabalho em equipe, o instrumento tem cinco subescalas. O tempo de resposta às chamadas de enfermagem foi coletado nos sistemas de

  3. Magnetic anisotropy of the Redenção granite, eastern Amazonian craton (Brazil): Implications for the emplacement of A-type plutons

    Science.gov (United States)

    de Oliveira, Davis Carvalho; Neves, Sérgio Pacheco; Trindade, Ricardo I. F.; Dall'Agnol, Roberto; Mariano, Gorki; Correia, Paulo Barros

    2010-10-01

    A magnetic fabric study was performed on the Redenção pluton in an attempt to understand its emplacement history. The Redenção pluton is part of the 1.88 Ga, anorogenic, A-type Jamon suite that intruded 2.97-2.86 Ga-old Archean granitoids of the Rio Maria Granite-Greenstone Terrane in the eastern Amazonian craton (northern Brazil). Previous gravity survey indicates that the pluton is a 6 km-thick, tabular intrusion. It is characterized by a concentric distribution of facies, with rings of seriated and porphyritic granite that cut across the main facies of even-grained monzogranites. The whole set is intruded by leucogranites that occupy the center of the pluton. Petrographic examination, magnetic susceptibilities, coercivity-spectra and thermomagnetic curves indicate that the magnetic fabric is primarily carried by coarse-grained multidomain magnetite. This is reinforced by the coincidence of magnetic susceptibility and remanence anisotropy principal axes. The absence of solid-state deformation features and the low anisotropy degrees indicate that the magnetic fabric is magmatic in origin. The magnetic fabric displays a systematic pattern, with all facies, including the rings of porphyritic granite, being characterized by concentric, gently dipping foliations associated with gently plunging lineations. Only the central leucogranitic facies shows a slightly discordant pattern with steeply dipping fabrics at its northeastern sector. An emplacement model by vertical stacking of successive magma batches is proposed for the construction of the Redenção pluton, which reconciles the tabular shape of the intrusion, the petrographic and geochemical zoning, and the magnetic fabric pattern. Initially, two magma batches were emplaced as sills. First the even-grained monzogranite, then the seriated and porphyritic granites, which formed by mingling of a leucogranitic melt with the host biotite-monzogranitic magma as attested by geochemical data and field evidence. The

  4. Metamorphic evolution and U-Pb zircon SHRIMP geochronology of the Belizário ultramafic amphibolite, Encantadas Complex, southernmost Brazil

    Directory of Open Access Journals (Sweden)

    Hartmann Léo A.

    2003-01-01

    Full Text Available The integrated investigation of metamorphism and zircon U-Pb SHRIMP geochronology of the Belizário ultramafic amphibolite from southernmost Brazil leads to a better understanding of the processes involved in the generation of the Encantadas Complex. Magmatic evidence of the magnesian basalt or pyroxenite protolith is only preserved in cores of zircon crystals, which are dated at 2257 ± 12 Ma. Amphibolite facies metamorphism M1 formed voluminous hornblende in the investigated rock possibly at 1989 ± 21 Ma. This ultramafic rock was re-metamorphosed at 702±21 Ma during a greenschist facies eventM2; the assemblage actinolite + oligoclase + microcline + epidote + titanite + monazite formed by alteration of hornblende. The metamorphic events are probably related to the Encantadas Orogeny (2257±12 Ma and Camboriú Orogeny (~ 1989 Ma of the Trans-Amazonian Cycle, followed by an orogenic event (702±21 Ma of the Brasiliano Cycle. The intervening cratonic period (2000-700 Ma corresponds to the existence of the Supercontinent Atlantica, known regionally as the Rio de la Plata Craton.

  5. Grau de dependência do paciente em relação à enfermagem: análise de prontuários Grado de dependencia del paciente con relación a las(os enfermeras(os: análisis de historias clínicas Degree of patient dependency in relation to nursing staff: analysis of clinical records

    Directory of Open Access Journals (Sweden)

    Luciana Mahnis Pereira Carmona

    2003-08-01

    Full Text Available Pretendemos, com este estudo, identificar, na evolução de enfermagem, o grau de dependência do paciente anotado pelo enfermeiro e confrontar com um instrumento de classificação. Fizeram parte do estudo 74 pacientes, 15 enfermeiros e 04 docentes, no período de 22 de setembro a 27 de outubro de 2000. Observamos nos resultados que houve discretas alterações do grau de dependência do paciente, da admissão até a alta, e que os pacientes intermediários apareceram com maior incidência (41,9%. Porém, para a nossa realidade, ainda devemos treinar os enfermeiros e formular um instrumento próprio de acordo com a característica das unidades de internação.Pretendimos con este estudio identificar en la evolución de enfermería el grado de dependencia del paciente anotado por el enfermero y confrontar con un instrumento de clasificación. Hicieron parte del estudio 74 pacientes, 15 enfermeros y 4 docentes durante el periodo de 22 de septiembre a 27 de octubre de 2000. Verificamos que hubo alteraciones discretas del grado de dependencia del paciente desde la admisión hasta el alta médica y que hubo una incidencia más alta de los pacientes intermedios (41.9%. Sin embargo para nuestra realidad todavía es necesario adiestrar los enfermeros y formular un instrumento propio de acuerdo con la característica de las unidades de hospitalización.In this study, we intend to identify in the evolution of nursing the intensity of patient dependency as it is written down by the nurse and confront it with a ranking instrument. 74 patients, 11 nurses and 04 lecturers were part of the study held from September 22 until October 27, 2000. We noticed slight modifications in the degree of patient dependency from hospital admission to discharge. Furthermore, the majority of the patients that needed help were the intermediate ones (41.9%. However, our reality still requires nursing training and the creation of an appropriate classification instrument, in

  6. TRANSFORMACIONES AGROPRODUCTIVAS E INDICADORES DE SUSTENTABILIDAD EN LA CUENCA DEL RIO QUEQUÉN GRANDE (PROVINCIA DE BUENOS AIRES, ARGENTINA, DURANTE LOS PERÍODOS 1988-1998 Y 1998-2008

    Directory of Open Access Journals (Sweden)

    PATRICIA VAZQUEZ

    2012-01-01

    Full Text Available La región pampeana posee fuertes ventajas comparativas para la producción agropecuaria. Los modelos productivos actuales incluyen la siembra directa con aumento en el uso de agroquímicos y el avance de la agricultura ha generado una fuerte fragmentación de los pastizales naturales. El objetivo de este trabajo es analizar las transformaciones agroproductivas en la Cuenca del río Quequen Grande (situada en la Pampa Austral y sus principales consecuencias durante los períodos 1988-1998 y 1998-2008. La metodología utilizada se basó en la clasificación supervisada de imágenes de satélite para los años seleccionados. Los estadísticos obtenidos se correlacionaron con cálculos de los indicadores de riesgo de intervención del hábitat y de contaminación por plaguicidas. El proceso de agriculturización se manifestó con distinta intensidad en los ambientes geomorfológicos de la Cuenca, la unidad de sierras y serranías fue la más afectada en ambos períodos, presentando valores altos de riesgo ambiental.

  7. Tráfego veicular e mortalidade por doenças do aparelho circulatório em homens adultos Tráfico vehicular y mortalidad por enfermedades del aparato circulatorio en hombres Motor vehicle traffic and cardiovascular mortality in male adults

    Directory of Open Access Journals (Sweden)

    Mateus Habermann

    2012-02-01

    Full Text Available OBJETIVO: Analisar a associação entre indicadores de exposição à poluição por tráfego veicular e mortalidade por doenças do aparelho circulatório em homens adultos. MÉTODOS: Foram analisadas informações sobre vias e volume de tráfego no ano de 2007 fornecidas pela companhia de engenharia de tráfego local. Mortalidade por doenças do aparelho circulatório no ano de 2005 entre homens > 40 anos foram obtidas do registro de mortalidade do Programa de Aprimoramento de Informações de Mortalidade do Município de São Paulo, SP. Dados socioeconômicos do Censo 2000 e informações sobre a localização dos serviços de saúde também foram coletados. A exposição foi avaliada pela densidade de vias e volume de tráfego para cada distrito administrativo. Foi calculada regressão (α = 5% entre esses indicadores de exposição e as taxas de mortalidade padronizadas, ajustando os modelos para variáveis socioeconômicas, número de serviços de saúde nos distritos e autocorrelação espacial. RESULTADOS: A correlação entre densidade de vias e volume de tráfego foi modesta (r² = 0,28. Os distritos do centro apresentaram os maiores valores de densidade de vias. O modelo de regressão espacial de densidade de vias indicou associação com mortalidade por doenças do aparelho circulatório (p = 0,017. Não se observou associação no modelo de volume de tráfego. Em ambos os modelos - vias e volume de tráfego (veículos leves/pesados - a variável socioeconômica foi estatisticamente significante. CONCLUSÕES: A associação entre mortalidade por doenças do aparelho circulatório e densidade de vias converge com a literatura e encoraja a realização de mais estudos epidemiológicos em nível individual e com métodos mais acurados de avaliação da exposição.OBJETIVO: Analizar la asociación entre indicadores de exposición a la contaminación por tráfico vehicular y mortalidad por enfermedades del aparato circulatorio en hombres

  8. Representações sociais da relação auxiliar de enfermagem-usuário no contexto do Programa Saúde da Família Representaciones sociales de la relación auxiliar de enfermería-usuario en el contexto del Programa de Salud de la Familia Social representations of the relationship between the nursing assistant and the user in the Health Program context

    Directory of Open Access Journals (Sweden)

    Maria do Carmo Eulálio

    2009-12-01

    Full Text Available Os profissionais da enfermagem têm se responsabilizado pela "arte" de cuidar, sendo eles os que dedicam a maior parte do seu tempo ao usuário. Neste estudo, objetivou-se compreender a relação entre auxiliar de enfermagem e usuário através das representações sociais do ato de tocar, construídas por esses profissionais no contexto do Programa Saúde da Família (PSF. Trata-se de uma pesquisa quali-quantitativa com 25 profissionais. Os instrumentos utilizados foram: associação livre de palavras, entrevista e questionário. Evidenciou-se que o toque representa possibilidades de aproximação entre profissional-usuário, expressando-se na prática cotidiana, pois auxilia na cura do usuário e humaniza a relação.Los profesionales de la enfermería tienen se responsabilizado por la "arte" de cuidar, siendo los que dedican la mayor parte de su tiempo al usuario. El objetivo de este trabajo es comprender la relación entre auxiliar de enfermería-usuario por las representaciones sociales del acto de tocar construidas por esos profesionales en el Programa Salud de la Familia. Se trata de una investigación cuali-cuantitativa con 25 profesionales. Los instrumentos utilizados fueron: asociación libre de palabras, entrevista y cuestionario. Se evidenció que el toque representa posibilidades de aproximación entre profesional-usuario, expresándose en la práctica cotidiana, pues posibilita la cura del usuario y humaniza la relación.Nursing professionals have themselves held liable for the "art" of take care of the users and are the ones who dedicate the major part of their time to them. The aim of this study is to understand the relationship between the nursing assistant and the user expressed by the social representations of the touch act by these professionals in the Family Health Program (PSF context. The qualitative-quantitative research involved 25 nursing assistants. The instruments utilized were: free word association, interview, and

  9. Regionalização e dinâmica política do federalismo sanitário brasileiro Regionalización y dinámica política del federalismo sanitario brasileño Regionalization and political dynamics of Brazilian health federalism

    Directory of Open Access Journals (Sweden)

    Daniel de Araujo Dourado

    2011-02-01

    Full Text Available Examinaram-se implicações da estrutura federativa brasileira no processo de regionalização de ações e serviços de saúde do Sistema Único de Saúde, considerando que o planejamento regional de saúde no Brasil deve realizar-se no contexto das relações intergovernamentais que expressam o federalismo cooperativo no âmbito sanitário. A análise foi baseada numa abordagem diacrônica do federalismo sanitário brasileiro, reconhecendo dois períodos de desenvolvimento, a descentralização e a regionalização. Explorou-se o planejamento regional do Sistema Único de Saúde à luz do referencial teórico do federalismo. Conclui-se que há necessidade de relativa centralização desse processo no nível das Comissões Intergestores Bipartite, para o exercício da coordenação federativa, e que é imprescindível formalizar espaços de dissenso nos Colegiados de Gestão Regional e nas próprias Comissões Intergestores, para efetivar a construção política consensual na regionalização da saúde.Se examinaron implicaciones de la estructura federativa brasileña en el proceso de regionalización de acciones y servicios de salud del Sistema Único de Salud, considerando que la planificación regional de salud en Brasil debe realizarse en el contexto de las relaciones intergubernamentales que expresan el federalismo cooperativo en el ámbito sanitario. El análisis fue basado en un abordaje diacrónico del federalismo sanitario brasileño, reconociendo dos períodos de desarrollo, la descentralización y la regionalización. Se exploró la planificación regional del Sistema Único de Salud a la luz de la referencia teórica del federalismo. Se concluyó que hay necesidad de relativa centralización de dicho proceso en el nivel de las Comisiones Intergestoras Bipartita, para el ejercicio de la coordinación federativa, y que es imprescindible formalizar espacios de disenso en los Colegiados de Gestión regional y en las propias Comisiones

  10. Perfil de adolescentes com repetição da gravidez atendidas num ambulatório de pré-natal Perfil de las adolescentes con repetición del embarazo atendidas en un ambulatorio de prenatal Profile of adolescents with repeated pregnancies attended at a prenatal clinic

    Directory of Open Access Journals (Sweden)

    Lia Persona

    2004-10-01

    Full Text Available Este trabalho identificou o perfil biopsicossocial das adolescentes com repetição da gravidez, atendidas num ambulatório de pré-natal. Os dados obtidos através do prontuário médico e entrevista foram analisados quantitativamente. Através dos resultados encontrados e de acordo com a literatura, foram selecionados, do perfil das adolescentes, fatores mais fortemente associados à ocorrência da repetição da gravidez. São eles: menarca precoce, primeira relação sexual após curto intervalo da menarca, repetência escolar, abandono escolar, ausência de ocupação remunerada, baixa renda familiar, envolvimento com parceiros mais velhos, residir com o parceiro, união consensual com o parceiro, um parceiro fixo, baixo uso de condon, história familiar de gravidez na adolescência, ausência do pai por morte ou abandono, reação positiva da família à gravidez anterior, aborto anterior, parto anterior bem conceituado pela adolescente, e ausência à revisão pós-parto anterior.Este trabajo identificó el perfil biopsicosocial de las adolescentes con repetición del embarazo, atendidas en un ambulatorio de prenatal. Los datos obtenidos por medio del prontuario médico y entrevista, fueron analizados cuantitativamente. Por medio de los resultados y de acuerdo con la literatura, fueron seleccionados, entre los perfiles de las adolescentes, factores más fuertemente asociados a la ocurrencia de la repetición del embarazo. Ellos son: menarca precoz; primera relación sexual tras corto intervalo de la menarca; repetición escolar; abandono escolar; ausencia de ocupación remunerada; baja renta familiar; envolvimiento con parejas más viejas; residir con la pareja; unión consensual con la pareja; pareja fija; bajo uso de condón; historia familiar de embarazo en la adolescencia; ausencia del padre por muerte o abandono; reacción positiva de la familia al embarazo anterior; aborto anterior; parto anterior bien conceptuado por la adolescente

  11. Il lavoro penitenziario: la dimensione umana del carcere e della città che lo accoglie. L’esperienza della cooperativa sociale Rio Terà dei Pensieri/Le travail carcéral : la dimension humaine de la prison et de la ville qui l'abrite. L'expérience de la coopérative sociale Rio Terà dei Pensieri/Prison inmates work: the human dimension of the prison and the town where prison is built in. The experience of social cooperative Rio Terà dei Pensieri

    Directory of Open Access Journals (Sweden)

    Valentina Ferrara

    2013-12-01

    Full Text Available Il lavoro approfondisce, nella parte teorica, le tematiche relative alla pena detentiva, analizzando la tradizione sociologica sull’argomento e confrontandola con le contingenze attuali, ponendo specifica attenzione al «problema» dell’immigrazione; traccia in seguito il quadro normativo relativo al lavoro in carcere e, contestualmente, alle cooperative sociali, quale cornice entro cui presentare i dati afferenti alla parte empirica. La ricerca di approccio quantitativo ha analizzato i dati dei dipendenti della Cooperativa al fine di rilevare la porzione di posti di lavoro garantiti dalla stessa rispetto al totale dei detenuti della Regione Veneto e della città di Venezia; la ricerca di approccio qualitativo ha indagato l’impatto delle attività della Cooperativa all’interno del carcere (osservazione, trattamento, misure alternative e al suo esterno (percezione dei cittadini rispetto agli istituti penitenziari. La première partie de cet article s’attache à analyser certains aspects de la détention à travers la littérature sociologique et accordant une attention particulière aux « problèmes » d’immigration. Ensuite, l’auteur examine les lois sur l’emploi en milieu carcéral et, parallèlement, les coopératives sociales. Dans la deuxième partie, l’auteur prend en considération les données provenant d’une étude quantitative menée parmi les salariés de la coopérative Rio Terà dei Pensier dans le but d’estimer le pourcentage d’emplois assuré par cette coopérative par rapport au nombre total de détenus en Région de Vénétie et dans la ville de Venise. De plus, en ce qui concerne la partie qualitative de cette recherche, l’auteur se penche sur l’impact des activités menées par cette coopérative tant en prison (traitement et réinsertion des délinquants, mesures alternatives à la détention qu’à l’extérieur (les perceptions qui ont les citoyens de la prison. The first part of this article

  12. Conhecimento, atitude e prática do uso de pílula e preservativo entre adolescentes universitários Conocimiento, actitud y práctica del uso de la píldora y el preservativo entre adolescentes universitários Knowledge, attitude and practice about the use of pill and preservative among adolescents university students

    Directory of Open Access Journals (Sweden)

    Aline Salheb Alves

    2008-02-01

    Full Text Available Foram avaliados o conhecimento, atitude e prática em relação à pílula e ao preservativo entre adolescentes, ingressantes de uma universidade pública paulista. Um questionário foi aplicado a 295 universitários. Observou-se que os adolescentes apresentaram atitudes positivas em relação à prática contraceptiva, já que 92,6% opinaram que devem utilizar métodos anticoncepcionais, e dentre os adolescentes com vida sexual ativa, aproximadamente 82% responderam que utilizavam algum método em todas as relações sexuais. Demonstraram ter maior conhecimento do que prática. Quando comparados o preservativo e a pílula, os adolescentes apresentam maior conhecimento e prática em relação ao preservativo. Conclui-se que embora os adolescentes tenham conhecimento e atitudes adequadas, precisam modificar algumas de suas práticas para uma anticoncepção eficaz.Fueron evaluados el conocimiento, la actitud y la práctica en relación a la píldora y al preservativo entre adolescentes recién matriculados en una universidad pública paulista. Fue aplicado un cuestionario a 295 adolescentes. Se observó que los adolescentes presentan actitudes positivas relativas a la práctica anticonceptiva, ya que el 92,6% opinan que deben usar métodos anticonceptivos y entre los adolescentes con vida sexual activa, aproximadamente el 82% contestaron que utilizaban algún método en todas las relaciones sexuales. Demostraron tener más conocimiento que práctica. Comparando el preservativo y la píldora, hubo mayor conocimiento y práctica en relación al preservativo. Se concluye que, aunque los adolescentes tengan conocimiento y actitudes adecuadas, necesitan cambiar algunas de sus prácticas para una anticoncepción eficaz.It was evaluated knowledge, attitude and practice concerning contraceptive pills and preservatives among teenagers at a public University of São Paulo. A questionnaire was applied for 295 students. We verified that teenagers presented a

  13. Les larmes de Rio

    Directory of Open Access Journals (Sweden)

    Grégory Corps

    2010-03-01

    Full Text Available Le 21 avril 1960, Rio de Janeiro n’est plus la capitale du Brésil. Le pouvoir fédéral, ses ministères, ses administrations et ses fonctionnaires doivent être transférés à Brasília, la nouvelle capitale du pays située sur le planalto central. Ce jour là, le Président Juscelino Kubitschek peut savourer la réalisation d’un très vieux rêve, celui d’installer la capitale du pays au centre des terres. Cette inauguration concentre donc les attentions, par sa dimension et sa portée, elle est un insta...

  14. Interaction of coeval felsic and mafic magmas from the Kanker granite, Pithora region, Bastar Craton, Central India

    Science.gov (United States)

    Elangovan, R.; Krishna, Kumar; Vishwakarma, Neeraj; Hari, K. R.; Ram Mohan, M.

    2017-10-01

    Field and petrographic studies are carried out to characterize the interactions of mafic and felsic magmas from Pithora region of the northeastern part of the Bastar Craton. The MMEs, syn-plutonic mafic dykes, cuspate contacts, magmatic flow textures, mingling and hybridization suggest the coeval emplacement of end member magmas. Petrographic evidences such as disequilibrium assemblages, resorption textures, quartz ocelli, rapakivi and poikilitic textures suggest magma mingling and mixing phenomena. Such features of mingling and mixing of the felsic and mafic magma manifest the magma chamber processes. Introduction of mafic magmas into the felsic magmas before initiation of crystallization of the latter, results in hybrid magmas under the influence of thermal and chemical exchange. The mechanical exchange occurs between the coexisting magmas due to viscosity contrast, if the mafic magma enters slightly later into the magma chamber, then the felsic magma starts to crystallize. Blobs of mafic magma form as MMEs in the felsic magma and they scatter throughout the pluton due to convection. At a later stage, if mafic magma enters the system after partial crystallization of felsic phase, mechanical interaction between the magmas leads to the formation of fragmented dyke or syn-plutonic mafic dyke. All these features are well-documented in the study area. Field and petrographic evidences suggest that the textural variations from Pithora region of Bastar Craton are the outcome of magma mingling, mixing and hybridization processes.

  15. Paleomagnetism of the Mississippian HP pipe and the western margin of the North American craton

    Science.gov (United States)

    Symons, D. T. A.; Lewchuk, M. T.

    The HP pipe is a small oval (80m×40m) kimberlitic diatreme near Golden, B.C., in the fold-and-thrust belt of the Rocky Mountains. The pipe intrudes gently-dipping (˜10°S) Late Cambrian to Middle Ordovician limestones with nearly vertical contacts. It is comprised of carbonate breccia fragments and pyroxenite nodules in a light-green serpentine matrix and gives a Rb-Sr age of 348±7 Ma. A later phase of dark-green dikes cut the breccia and adjacent limestones. AF and thermal step demagnetization of 168 specimens from 42 oriented blocks was done using an automated cryogenic magnetometer in a shielded room for remanence measurement. The diatreme breccia and dikes retain a stable A remanence component after thermal cleaning above ˜400°C and AF cleaning above ˜20 mT. Their combined mean direction of 129.8°, -44.3° (α95 = 6.5°) after tilt correction gives a concordant Mississippian pole position of 138.5°E, 44.5°N (Dp = 5.1°, Dm = 8.2°). The limestones provide a positive contact test by giving a stable B component direction of 114.4°, -22.7° (α95 = 12.4°) with a concordant Late Cambrian to Middle Ordovician pole of 141.0°E, 24.3°N (δp = 7.0°, δm = 13.3°). These concordant poles indicate that the fold-and-thrust belt is part of the North American craton. Thus the suture with allochthonous terranes to the west must be located at or west of the Rocky Mountain Trench. Both the diatreme and limestones retain a low-coercivity and unblocking-temperature C component, isolated by vector subtraction without tilt correction, that records a minor overprint from the Laramide Orogeny combined with Pleistocene viscous remanence.

  16. Provenance of zircon of the lowermost sedimentary cover, Estonia, East-European Craton

    Directory of Open Access Journals (Sweden)

    Konsa, M.

    1999-12-01

    Cambrian sequence, zircons resembling those of local basement sources are very rare or absent. Obviously, basal Vendian/Cambrian sedimentary rocks sealed off the basement as a source of zircon. Therefore a distant source, probably outside the Svecofennian Domain, could be supposed for the bulk clastic minerals and zircons of the upperpart of the Vendian and the lower part of the Cambrian. Probably, studies of isotopic ages of different typological varieties of zircons, both of obviously local and distant origin, could provide new information on respective source rock ages and areas, and on the general palaeogeographic pattern of the Vendian and Cambrian epicratonic sedimentary basins of the East-European Craton.

  17. Paleoproterozoic crustal evolution of the Hengshan–Wutai–Fuping region, North China Craton

    Directory of Open Access Journals (Sweden)

    Chunjing Wei

    2014-07-01

    Full Text Available An arguable point regarding the Neoarchean and Paleoproterozoic crustal evolution of the North China Craton (NCC is whether the tectonic setting in the central belt during the mid-Paleoproterozoic (2.35–2.0 Ga was dominated by an extensional regime or an oceanic subduction–arc regime. A review of the mid-Paleoproterozoic magmatism and sedimentation for the Hengshan–Wutai–Fuping region suggests that a back-arc extension regime was dominant in this region. This conclusion is consistent with the observation that the 2.35–2.0 Ga magmatism shows a typical bimodal distribution where the mafic rocks mostly have arc affinities and the acidic rocks mainly comprise highly-fractioned calc-alkaline to alkaline (or A-type granites, and that this magmatism was coeval with development of extensional basins characteristic of transgressive sequences with volcanic interlayers such as in the Hutuo Group. Although the final amalgamation of the NCC was believed to occur at ∼1.85 Ga, recent zircon U–Pb age dating for mica schist in the Wutai Group suggests a collisional event may have occurred at ∼1.95 Ga. The metamorphic ages of ∼1.85 Ga, obtained mostly from the high-grade rocks using the zircon U–Pb approach, most probably indicate uplifting and cooling of these high-grade terranes. This is because (i phase modeling suggests that newly-grown zircon grains in high-grade rocks with a melt phase cannot date the age of peak pressure and temperature stages, but the age of melt crystallization in cooling stages; (ii the metamorphic P–T paths with isobaric cooling under 6–7 kb for the Hengshan and Fuping granulites suggest their prolonged stay in the middle–lower crust; and (iii the obtained metamorphic age data show a continuous distribution from 1.95 to 1.80 Ga. Thus, an alternative tectonic scenario for the Hengshan–Wutai–Fuping region involves: (i formation of a proto-NCC at ∼2.5 Ga; (ii back-arc extension during 2.35–2.0

  18. The Birth of a Cratonic Core: Petrologic Evolution of the Hadean-Eoarchean Acasta Gneiss Complex

    Science.gov (United States)

    Reimink, J. R.; Chacko, T.; Davies, J.; Pearson, D. G.; Stern, R. A.; Heaman, L. M.; Carlson, R.; Shirey, S. B.

    2016-12-01

    Granitoid magmatism within the 4.02-3.6 Ga Acasta Gneiss Complex records distinct whole-rock compositional changes during the building the Slave Craton. Previously1,2 we suggested that these signatures implied petrologic changes from initiation of evolved crust formation in an Iceland-like setting to partial melting of hydrated mafic crust at increasing depth through time, culminating in relatively voluminous magmatism at 3.6 Ga. Increasing La/Yb in these rocks suggest increasing depth of melting (and increasing residual garnet content) with time, ending in emplacement of rocks comparable to other Archean TTG suites3, with both high pressure (high La/Yb) and low pressure (low La/Yb) rocks represented at 3.6 Ga. Data from rocks with variable La/Yb that crystallized 3.6 Ga allow us to evaluate potential mechanisms for formation of rocks of this age such as subduction/accretion or intracrustal melting/delamination. Despite major and trace element compositional and age variability, zircon oxygen isotope compositions from a wide variety of rocks are extremely consistent (+6.0-6.5 ‰ from 3.9-2.9 Ga), implying a similar source, one that had been altered by surface waters1. Potential source rocks include the upper portion of oceanic crust, which contains a large portion of mafic crust that had been altered at low temperatures (e.g., 4). Paired whole rock and zircon radiogenic isotopic data are especially sensitive to the extent of pre-existing felsic material in the region, as well as the longevity of primary, basaltic rocks prior to their reworking into more evolved crust. New paired zircon Hf and whole rock Nd isotope data collected from these samples show variably unradiogenic signatures and allow an exploration of similarities and disparities between crust formation in the Acasta Gneiss Complex and other Paleoarchean-Mesoarchean crustal blocks. [1] Reimink et al., 2016. Precambrian Research 281, 453-472. [2] Reimink et al., 2014 Nature Geoscience 7, 529-533. [3

  19. A primitive mantle source for the Neoarchean mafic rocks from the Tanzania Craton

    Directory of Open Access Journals (Sweden)

    Y.A. Cook

    2016-11-01

    Full Text Available Mafic rocks comprising tholeiitic pillow basalt, dolerite and minor gabbro form the basal stratigraphic unit in the ca. 2.8 to 2.6 Ga Geita Greenstone Belt situated in the NW Tanzania Craton. They outcrop mainly along the southern margin of the belt, and are at least 50 million years older than the supracrustal assemblages against which they have been juxtaposed. Geochemical analyses indicate that parts of the assemblage approach high Mg-tholeiite (more than 8 wt.% MgO. This suite of samples has a restricted compositional range suggesting derivation from a chemically homogenous reservoir. Trace element modeling suggests that the mafic rocks were derived by partial melting within the spinel peridotite field from a source rock with a primitive mantle composition. That is, trace elements maintain primitive mantle ratios (Zr/Hf = 32–35, Ti/Zr = 107–147, producing flat REE and HFSE profiles [(La/Ybpm = 0.9–1.3], with abundances of 3–10 times primitive mantle and with minor negative anomalies of Nb [(Nb/Lapm = 0.6–0.8] and Th [(Th/Lapm = 0.6–0.9]. Initial isotope compositions (ɛNd range from 1.6 to 2.9 at 2.8 Ga and plot below the depleted mantle line suggesting derivation from a more enriched source compared to present day MORB mantle. The trace element composition and Nd isotopic ratios are similar to the mafic rocks outcropping ∼50 km south. The mafic rocks outcropping in the Geita area were erupted through oceanic crust over a short time period, between ∼2830 and ∼2820 Ma; are compositionally homogenous, contain little to no associated terrigenous sediments, and their trace element composition and short emplacement time resemble oceanic plateau basalts. They have been interpreted to be derived from a plume head with a primitive mantle composition.

  20. Multifractal spatial organisation in hydrothermal gold systems of the Archaean Yilgarn craton, Western Australia

    Science.gov (United States)

    Munro, Mark; Ord, Alison; Hobbs, Bruce

    2015-04-01

    A range of factors controls the location of hydrothermal alteration and gold mineralisation in the Earth's crust. These include the broad-scale lithospheric architecture, availability of fluid sources, fluid composition and pH, pressure-temperature conditions, microscopic to macroscopic structural development, the distribution of primary lithologies, and the extent of fluid-rock interactions. Consequently, the spatial distribution of alteration and mineralization in hydrothermal systems is complex and often considered highly irregular. However, despite this, do they organize themselves in a configuration that can be documented and quantified? Wavelets, mathematical functions representing wave-like oscillations, are commonly used in digital signals analysis. Wavelet-based multifractal analysis involves incrementally scanning a wavelet across the dataset multiple times (varying its scale) and recording its degree of fit to the signal at each interval. This approach (the wavelet transform modulus maxima method) highlights patterns of self-similarity present in the dataset and addresses the range of scales over which these patterns replicate themselves (expressed by their range in 'fractal dimension'). Focusing on seven gold ore bodies in the Archaean Yilgarn craton of Western Australia, this study investigates whether different aspects of hydrothermal gold systems evolve to organize themselves spatially as multifractals. Four ore bodies were selected from the Sunrise Dam deposit (situated in the Laverton tectonic zone of the Kurnalpi terrane) in addition to the Imperial, Majestic and Salt Creek gold prospects, situated in the Yindarlgooda dome of the Mount Monger goldfield (approximately 40km due east of Kalgoorlie). The Vogue, GQ, Cosmo East and Astro ore bodies at Sunrise Dam were chosen because they exhibit different structural geometries and relationships between gold and associated host-rock alteration styles. Wavelet-based analysis was conducted on 0.5m and 1m

  1. Bolsa Família (Family Grant Programme: an analysis of Brazilian income transfer programme Du mythe à la réalité : l'expérience du tourisme durable dans la communauté du Vale Encantado, Forêt de Tijuca, Rio de Janeiro, Brésil Del mito a la relidad : la experiencia del turismo sostenible en la comunidad de Vale Encantado, Bosque de Tijuca, Río de Janeiro, Brasil

    Directory of Open Access Journals (Sweden)

    Luciana Mourão

    2012-02-01

    éation du Parc national de Tijuca, en 1961. À présent et grâce au projet de tourisme durable, le Vale Encantado est devenu une référence en termes de cohabitation, d’intégration et de préservation de l’environnement local, et est reconnu comme « gardien de la forêt ».Considerado uno de los más grandes bosques urbanos del mundo y el tercero de Brasil, Floresta da Tijuca (Bosque de Tijuca, situado en la ciudad de Río de Janeiro, se enfrenta al gran desafío de convivir de forma harmónica y sostenible con las 46 favelas situadas en su entorno. Una de estas comunidades, Vale Encantado, cuyo proceso de ocupación data de mediados del siglo XVIII, vivió los diversos ciclos productivos que en él se desarrollaron, pasando por la extracción de madera, explotación agrícola, ganadera y de plantas ornamentales, y extracción de granito negro. Estos ciclos productivos, en mayor o en menor grado, impactaron negativamente en el bosque nativo. Sin embargo, de manera simultánea a este proceso, la comunidad de Vale Encantado fue testigo de la implementación de esfuerzos de reconstitución y protección de este fragmento de Bosque Atlántico, mediante la reforestación y la creación del Parque Nacional da Tijuca, en 1961. Hoy, a través del proyecto de turismo sostenible y gastronomía social, Vale Encantado se ha convertido en referencia del proceso de convivencia, integración y protección del medioambiente local, pasando a ser reconocido como “guardián del bosque”.Considerada uma das maiores florestas urbanas do mundo e a terceira do Brasil, a Floresta da Tijuca, situada na cidade do Rio de Janeiro, enfrenta o grande desafio de conviver de forma harmonica e sustentável com as 46 favelas situadas em seu entorno. Uma destas comunidades, o Vale Encantado, cujo processo de ocupação data de meados do século XVIII, vivenciou os diversos ciclos produtivos que nela se desenvolveram, passando pela extração de madeira, exploração agrícola, pecuária, de

  2. Formación del pensamiento reflexivo en estudiantes universitarios (Training Reflexive Thinking in University Students (Formation de la pensée réflexive chez les étudiants universitaires (Formação do pensamento reflexivo em estudantes universitários

    Directory of Open Access Journals (Sweden)

    Claudia Ximena González-Moreno

    2012-06-01

    Full Text Available ResumenSe parte del soporte científico y conceptual del enfo- que histórico-cultural de Lev Semiónovich Vygotsky para presentar los resultados de una investigación des- criptiva, sobre el quehacer educativo en el aula por lo que se establece una interacción dialéctica entre teoría y práctica. El objetivo fue la formación del pensamien- to reflexivo en estudiantes universitarios en la licencia- tura en Pedagogía Infantil, en la clase Teorías cogniti- vas del aprendizaje. Los resultados muestran que las acciones pedagógicas pueden impactar positivamente la consolidación de los procesos de aprendizaje y que el pensamiento reflexivo se constituye en el motor del cambio mediante el uso intencionado del lenguaje.AbstractThe starting point of this paper is the scien- tific and conceptual framework of Vygotsky's cultural-historical approach, which is used to present the results of a descriptive research work on classroom activities, establishing a dialectic interaction between theory and practice. The aim was to train reflexive thin- king in university students of the teacher training course in Children's Pedagogy, more specifically a subject in Cognitive Theories of Learning. The results show that pedagogical actions can have a positive impact on the consolidation of learning processes. Reflexive thinking is an agent of change through inten- tional use of language.RésuméLe point de départ de cette étude est la base scientifique et conceptuelle de la perspective historico-culturelle de Vygotsky pour présen- ter les résultats d'une recherche de type des- criptive, par rapport au travail éducatif dans la salle de classe, c'est pourquoi on a établit l'interaction dialectique entre la théorie et la pratique. L'objectif a été la formation de la pensée réflexive chez les étudiants univer- sitaires dans la carrière de Pédagogie pour l'enfance, à travers le cours Théories Cogni- tives de l'apprentissage. Les résultats mon- trent

  3. Evaluation of well-being at work among nursing professionals at a University Hospital Evaluación del bienestar en el trabajo entre los profesionales de enfermería de un hospital universitario Avaliação do bem-estar no trabalho entre profissionais de enfermagem de um hospital universitário

    Directory of Open Access Journals (Sweden)

    Priscila Castro Alves

    2012-08-01

    promociones, lo que puede reflejar en la calidad del servicio prestado a los pacientes del hospital universitario.Bem-estar no trabalho apoia-se na Psicologia Positiva, sendo definido como um estado psicológico composto por vínculos afetivos positivos com o trabalho e com a organização. Este estudo teve por objetivo conhecer o nível de bem-estar no trabalho de profissionais de Enfermagem que atuam em um hospital universitário e identificar diferenças entre categorias ocupacionais e tipos de contrato de trabalho. A amostra foi composta por 340 profissionais que responderam a escalas válidas dos construtos: Satisfação no Trabalho, Envolvimento com o Trabalho e Comprometimento Organizacional Afetivo. Para análise dos dados utilizou-se o programa SPSS, versão 12, a fim de efetuar estatísticas descritivas e testes de diferença entre médias. Os resultados indicaram nível médio de bem-estar no trabalho e diferenças entre as categorias profissionais e regime de contratação quanto à satisfação com salário e promoções, o que pode refletir na qualidade do atendimento prestado aos pacientes do hospital universitário.

  4. Condições de trabalho da enfermagem nas enfermarias de um hospital universitário Condiciones de trabajo del equipo de enfermería en las salas de enfermos de un hospital universitario Working conditions of the nursing team in the patient wards of a university hospital

    Directory of Open Access Journals (Sweden)

    Maria Yvone Chaves Mauro

    2010-06-01

    Full Text Available Trata-se de um estudo que aborda a temática do trabalho de enfermagem e tem como foco a percepção dos trabalhadores de enfermagem sobre as suas condições de trabalho. O estudo é do tipo não experimental, com abordagem quantitativa. O objetivo deste artigo é identificar e discutir as condições de trabalho dos trabalhadores de enfermagem nas enfermarias de um Hospital Universitário (HU. Utilizou-se como campo um HU do Estado do Rio de Janeiro, com uma amostra constituída de 296 trabalhadores de enfermagem, no ano de 2008. Nos resultados, foram indicados os fatores de riscos biológicos, físicos, ergonômicos e químicos. Conclui-se que as condições de trabalho são inadequadas e desfavorecem a saúde dos trabalhadores de enfermagem. Este estudo permite ao trabalhador e à instituição discutir o meio ambiente ocupacional e propor mudanças no processo de trabalho.El presente estudio aborda el tema del trabajo realizado por el equipo de enfermería y se centra en la percepción que estos profesionales tienen sobre las condiciones laborales bajo las cuales desarrollan su actividad. Este estudio es una investigación de tipo no - experimental, de enfoque cuantitativo. El objetivo de este artículo es identificar y discutir las condiciones de trabajo del equipo de enfermería encargado de las salas de enfermos de un hospital universitario (UH, siglas en portugués. El campo de investigación fue un hospital universitario de Río de Janeiro y se llevó a cabo con un grupo muestra de 296 trabajadores de enfermería en el año de 2008. De entre los resultados, se subrayaron los siguientes factores: biológicos, físicos, ergonómicos y químicos. Se concluyó que las condiciones de trabajo son inadecuadas y adversas para la salud de los trabajadores de enfermería. Este estudio permite a los empleados y la institución discutir el entorno ocupacional con el objetivo de proponer cambios y mejoras al proceso de trabajo.The present study

  5. As dimensões da satisfação dos usuários do Programa Saúde da Família: confiabilidade e empatia Las dimensiones de la satisfacción de los usuarios del Programa Salud de la Familia: confiabilidad y empatía The Dimensions of user satisfaction of the Family Health Program: trust and empathy

    Directory of Open Access Journals (Sweden)

    Orlene Veloso Dias

    2011-01-01

    Full Text Available OBJETIVO: Descrever a percepção dos usuários das equipes do Programa Saúde da Família (PSF da zona urbana de Montes Claros, Minas Gerais, sobre as dimensões da satisfação relacionadas à Confiabilidade e à Empatia; analisar o perfil sociodemográfico da população entrevistada frente à Confiabilidade e à Empatia. MÉTODOS: Pesquisa quantitativa; descritiva por meio do SERVQUAL. Foram entrevistados 319 usuários e a análise foi realizada por meio da estatística descritiva e as associações estatisticamente significantes. RESULTADOS: A maioria dos entrevistados é do sexo feminino (80,6%, encontra-se na faixa etária de 18 a 30 anos (38,2%, possui ensino médio completo (32,3%, renda familiar de 1 a 3 salários mínimos (76,8%, reside nos bairros há mais de 10 anos (52,6% e tem boa percepção dos serviços prestados quanto à Confiabilidade e à Empatia. CONCLUSÃO: Foi possível descrever os aspectos que envolvem a Confiabilidade e a Empatia dos usuários do PSF, que merecem ser considerados na reestruturação dos processos de atenção à saúde da população.OBJETIVO: Describir la percepción de los usuarios de los equipos del Programa Salud de la Familia (PSF de la zona urbana de Montes Claros, Minas Gerais, sobre las dimensiones de la satisfacción relacionadas a la Confiabilidad y la Empatia; analizar el perfil sociodemográfico de la población entrevistada frente a la Confiabilidad y a la Empatía. MÉTODOS: Investigación cuantitativa; descriptiva por medio del SERVQUAL. Fueron entrevistados 319 usuarios y el análisis fue realizado por meio da estadística descriptiva y las asociaciones estadísticamente significativas. RESULTADOS: La mayoría de los entrevistados es del sexo feminino (80,6%, se encuentra en el grupo etáreo de 18 a 30 años (38,2%, posee secundaria completa (32,3%, ingreso familiar de 1 a 3 salarios mínimos (76,8%, reside en los barrios hace más de 10 años (52,6% y tiene buena percepción de los

  6. Accuracy of simple urine tests for diagnosis of urinary tract infections in low-risk pregnant women La exactitud del examen de orina simple para diagnosticar infecciones del tracto urinario en gestantes de bajo riesgo Acurácia do exame de urina simples para diagnóstico de infecções do trato urinário em gestantes de baixo risco

    Directory of Open Access Journals (Sweden)

    Danielle Cristina Alves Feitosa

    2009-08-01

    Full Text Available Anatomic and physiological alterations during pregnancy predispose pregnant women to urinary tract infections (UTI. This study aimed to identify the accuracy of the simple urine test for UTI diagnosis in low-risk pregnant women. Diagnostic test performance was conducted in Botucatu, SP, involving 230 pregnant women, between 2006 and 2008. Results showed 10% UTI prevalence. Sensitivity, specificity and accuracy of the simple urine test were 95.6%, 63.3% and 66.5%, respectively, in relation to UTI diagnoses. The analysis of positive (PPV and negative (NPV predictive values showed that, when a regular simple urine test was performed, the chance of UTI occurrence was small (NPV 99.2%. In view of an altered result for such a test, the possibility of UTI existence was small (PPV 22.4%. It was concluded that the accuracy of the simple urine test as a diagnostic means for UTI was low, and that performing a urine culture is essential for appropriate diagnosis.Las alteraciones anatómicas y fisiológicas de la gravidez predisponen a las gestantes a infecciones del tracto urinario (ITU. El objetivo de este estudio fue identificar la exactitud del examen de orina simple para diagnosticar ITU en gestantes de bajo riesgo. Se hizo uso del estudio de desempeño de prueba de diagnóstico realizado en Botucatu, San Pablo, con 230 gestantes, entre 2006 y 2008. Los resultados muestran que la prevalencia de ITU fue de 10%. La sensibilidad fue 95,6%, la especificidad 63,3% y la exactitud 66,5% del examen de orina simple, en relación al diagnóstico de ITU. El análisis de los valores de predicción positivo y negativo (VPP y VPN mostró que, en la vigencia de examen de orina simple normal, la probabilidad de haber ITU fue pequeña (VPN 99,2%. Frente al resultado alterado de ese examen, la probabilidad de haber ITU fue baja (VPP 22,4%. Se concluye que la exactitud del examen de orina simple como medio de diagnóstico de ITU fue baja, siendo indispensable la realizaci

  7. Doença mental: representações de usuários e de profissionais da saúde Enfermedad mental: representaciones del usuarios y de los profesionales de salud Mental disease: representations of users and of health care professionals

    Directory of Open Access Journals (Sweden)

    Helena Bazanelli Prebianchi

    2011-03-01

    Full Text Available A diversidade de concepções sobre saúde e doença determina diferentes expectativas que causam defasagens entre necessidades avaliadas por profissionais e usuários dos serviços de saúde. Objetivou-se uma revisão de artigos que discutissem conteúdos, crenças e valores dos profissionais e dos usuários dos serviços de saúde mental em relação à doença mental. Realizou-se uma pesquisa bibliográfica em indexadores de produção científica, cobrindo o período 2001 a 2008, incluindo-se apenas trabalhos nacionais. Foram analisados os pontos de contato e de divergência entre representações de usuários dos serviços de saúde mental e dos profissionais da área. Os resultados indicaram semelhanças e divergências nas concepções referentes duas questões: 1 definição de doença mental, suas causas e cura; e 2 o profissional psicólogo e a busca por atendimento psicológico. Concluiu-se que as diferenças de significados entre profissionais e usuários justificam a necessidade de mais estudos para que as práticas em saúde mental respondam às demandas mais ampliadas.La diversidad de consepciones, en la salud y enfermedad, determina distintas expectativas van causar desfasajes entre las necesidades evaluadas por profesionales y usuarios de los servicios de la salud. El objetivo fue una revisión de los artículos que tratan sobre las creencias y valores de los profesionales y de los usuarios de los servicios de la salud mental en relación a la enfermedad mental. Se realizó una búsqueda bibliográfica en indexadores de producción científica, que abarca el período 2001-2008 y sólo incluyó los trabajos nacionales. Se revisaron los puntos de contacto y de divergencias entre las representaciones del usuarios y de los profesionales. Los resultados indicaron similitudes y divergencias en las concepciones de: la definición de enfermedad mental, sus causas y cura; el psicólogo y a la búsqueda de tratamiento psicológico. Se

  8. THE SOUTHERN FRAGMENT OF THE SIBERIAN CRATON: “LANDSCAPE” HISTORY OVER TWO BILLION YEARS

    Directory of Open Access Journals (Sweden)

    Arkady M. Stanevich

    2010-01-01

    Full Text Available In the state-of-the-art geology, concepts of evolution of interrelated geodynamic and biotic events throughout the history of the Earth have been developed (Fig. 1. Research results on sediments, bio-stratigraphy and geodynamics of the southern fragment of the Siberian craton (SSC, Fig. 2 provide for more or less reliable assessments of the status and evolution of ancient landscapes and biotas from the Lower Proterozoic to the Cenozoic.In the Lower Proterozoic, the geodynamic regime of the Urik-Iyskiy graben was similar to those of the westernpacific island-arc systems, which resulted in the orogen formation and established post-orogen granitoids of 1.86 bln years of age. At the beginning of the Early Riphean, volcano-sedimentary masses were accumulated in continental basins (Fig. 2, 3A. Collision orogenesis also resulted in the occurrence of the terrigeno-volcanogenic complex of the Akitkanskaya suite in the Western Pribaikalie and the transecting Irelskiy granitoids, aged 1.86 bln years, at the edge of the craton. Later on, most probably before the Riphean, peneplanation took place, and a shallow peripheral sea was formed with highly-mature sediments of the Purpolskaya suite. Different environments are reconstructed in the KodarUdokan zone. Sediments of the Udokanskaya suite, varying in thicknesses from 11 to 14 km, suggest a complicated evolution of sedimentation in the peripheral marine basin. Dozens of radiochronological datings of granitoids of the Chuiskiy and Kodarskiy complex which transect the Udokanskaya suite are within the range from 1.7 to 2.0 bln years. From the deposit composition and texture, it can be suggested that the middle, Chineiskaya sub-suite was formed under island-arc conditions; and glacial phenomena occurred in the late Udokan time.Further geological history of the SSC can be described only within the period after the Late Riphean sedimentations (see Fig. 3Б, В. The SSC evolution in the Neo-Proterozoic began with

  9. THE SOUTHERN FRAGMENT OF THE SIBERIAN CRATON: “LANDSCAPE” HISTORY OVER TWO BILLION YEARS

    Directory of Open Access Journals (Sweden)

    Arkady M. Stanevich

    2015-09-01

    Full Text Available In the state-of-the-art geology, concepts of evolution of interrelated geodynamic and biotic events throughout the history of the Earth have been developed (Fig. 1. Research results on sediments, bio-stratigraphy and geodynamics of the southern fragment of the Siberian craton (SSC, Fig. 2 provide for more or less reliable assessments of the status and evolution of ancient landscapes and biotas from the Lower Proterozoic to the Cenozoic.In the Lower Proterozoic, the geodynamic regime of the Urik-Iyskiy graben was similar to those of the westernpacific island-arc systems, which resulted in the orogen formation and established post-orogen granitoids of 1.86 bln years of age. At the beginning of the Early Riphean, volcano-sedimentary masses were accumulated in continental basins (Fig. 2, 3A. Collision orogenesis also resulted in the occurrence of the terrigeno-volcanogenic complex of the Akitkanskaya suite in the Western Pribaikalie and the transecting Irelskiy granitoids, aged 1.86 bln years, at the edge of the craton. Later on, most probably before the Riphean, peneplanation took place, and a shallow peripheral sea was formed with highly-mature sediments of the Purpolskaya suite. Different environments are reconstructed in the KodarUdokan zone. Sediments of the Udokanskaya suite, varying in thicknesses from 11 to 14 km, suggest a complicated evolution of sedimentation in the peripheral marine basin. Dozens of radiochronological datings of granitoids of the Chuiskiy and Kodarskiy complex which transect the Udokanskaya suite are within the range from 1.7 to 2.0 bln years. From the deposit composition and texture, it can be suggested that the middle, Chineiskaya sub-suite was formed under island-arc conditions; and glacial phenomena occurred in the late Udokan time.Further geological history of the SSC can be described only within the period after the Late Riphean sedimentations (see Fig. 3Б, В. The SSC evolution in the Neo-Proterozoic began with

  10. El Río de la Plata a comienzos del siglo XVIII: estrategias y propuestas en tiempos de guerra = The Rio de la Plata at the beginning of the eighteenth century: strategies and proposals in war times

    Directory of Open Access Journals (Sweden)

    María Luz González Mezquita

    2015-12-01

    Full Text Available El interés despertado por la Guerra de Sucesión Española y los procesos vinculados a ella en los últimos años, aunque muchos temas merecen aún investigaciones exhaustivas, ha mejorado su conocimiento a partir de los resultados de reuniones científicas y publicaciones sobre el tema. América no ha sido un ámbito privilegiado en las investigaciones sobre la Guerra tanto en el caso español como portugués; sin embargo, para comprender la importancia de sus territorios bastaría con recordar que fueron una de las causas principales en el enfrentamiento. En este contexto, a principios del siglo XVIII, escribe parte de su obra un viajero incansable: Francisco de Seyxas y Lovera que intenta un acercamiento al rey de España a través de Luis XIV, su abuelo. Analizaremos en este trabajo su posición con respecto a los problemas que causaban la ruina de la Monarquía, en especial, el papel de los extranjeros, tomando el caso del Río de la Plata para finalizar con la solución que propone frente a los avances portugueses en esta zona.Although many issues still deserve research, in recent years the interest provoked by the War of Spanish Succession and the processes related to it, has improved his knowledge. This has happened due to the results of scientific meetings and publications on the subject. Latin America has not been a priority area on the war studies in both the Spanish and Portuguese cases; however, to understand the importance of their territories it’s enough to remember that they were some of the main causes in the clash. In this context, at the early eighteenth century, a tireless traveler, Francisco de Seyxas y Lovera, writes a part of his work to get closeness to the King of Spain by the mediation of Louis XIV, his grandfather. In this paper it’s discussed his position about the problems that caused the destruction of the Monarchy, especially the role of foreigners, taking in account the case of the Río de la

  11. A abreviação do jejum pré-operatório para duas horas com carboidratos aumenta o risco anestésico? ¿La Reducción del ayuno preoperatorio en dos horas con carbohidratos aumenta el riesgo anestésico? Does abbreviation of preoperative fasting to two hours with carbohydrates increase the anesthetic risk?

    Directory of Open Access Journals (Sweden)

    Kátia Gomes Bezerra de Oliveira

    2009-10-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: O objetivo do presente estudo foi avaliar o surgimento de possíveis complicações anestésicas relacionadas à abreviação do jejum pré-operatório para duas horas com uma solução contendo dextrinomaltose a 12,5% dentro do projeto ACERTO (Aceleração da Recuperação Total Pós-operatória. MÉTODO: Foram avaliados prospectivamente todos os pacientes submetidos a diversas operações sobre o trato digestivo e parede abdominal dentro de um novo protocolo de condutas perioperatórias estabelecidas pelo projeto ACERTO entre agosto de 2005 e dezembro de 2007. Todos receberam o suplemento nutricional (dextrinomaltose a 12,5% por via oral seis e duas horas antes do procedimento cirúrgico. A coleta de dados foi prospectiva sem o conhecimento dos profissionais do serviço. Observou-se o tempo de jejum pré-operatório e as complicações anestésicas relacionadas ao curto tempo de jejum (broncoaspiração. RESULTADOS: Foram avaliados 375 pacientes, sendo 174 homens (46,4% e 201 mulheres (53,6% entre 18 e 90 anos de idade O tempo médio de jejum pré-operatório foi de quatro horas variando de duas a 20 horas. Não houve nenhum caso de broncoaspiração durante os procedimentos. O tempo de jejum foi maior (p JUSTIFICATIVA Y OBJETIVOS: El objetivo del presente estudio, fue evaluar el surgimiento de posibles complicaciones anestésicas relacionadas con la reducción del ayuno preoperatorio en dos horas con una solución que contiene dextrinomaltosa a 12,5% dentro del proyecto ACERTO (Aceleración de la Recuperación Total Postoperatoria. MÉTODO: Se evaluaron de forma prospectiva, todos los pacientes sometidos a diversas operaciones sobre el tracto digestivo y la pared abdominal, dentro de un nuevo protocolo de conductas perioperatorias establecidas por el proyecto ACERTO, entre agosto de 2005 y diciembre de 2007. Todos recibieron el suplemento nutricional (dextrinomaltosa a 12,5% por vía oral seis y dos horas antes del

  12. Relationship between Precambrian North Korean Peninsula and the North China Craton: Evidence from LA-ICP-MS U-Pb ages of detrital zircons from Neoproterozoic tillites of North Korea and Southern North China Craton

    Science.gov (United States)

    Hu, B.; Zhai, M.; Peng, P.; Zhang, Y.; Wu, J.; Jia, X.; Zhang, H.; Lei, W.; Zhuang, G.

    2016-12-01

    Relationship between Precambrian Korean Peninsula and the North China Craton (NCC) is focus of attention. There are Neoproterozoic tillites in Phyongnam Basin, Nangrim massif, North Korea (NK) and Southern NCC. Nangrim massif was regarded as a part of the NCC according to similar Precambrian basements between Nangrim massif and Longgang massif in the Northeast NCC. But the comparation of Neoproterozoic rocks is lacked between NK and NCC. Detrital zircon LA-ICP-MS U-Pb ages of 2 pebbly phyllite samples of Pirangdong Series in Phyongnam Basin and 2 argillaceous cemented mix-conglomeate samples of Luoquan Series in Southern NCC was analyzed in this research. Detrital zircon ages of pebbly phyllites of Pirangdong Series distribute mainly at 1.85 Ga, 1.8 Ga, 1.6 Ga, 1.4 Ga and 1.2 Ga. A small number of them are at 3.2 Ga, 2.6 - 2.5 Ga, 2.3 Ga, 2.1 Ga and 900 - 860 Ma. Detrital zircon ages of mix-conglomeates of Luoquan Series mainly focus on 2.5 Ga, 2.2 Ga, 2.0 Ga, 1.8 Ga and 1.6 Ga. Minor of them distribute at 1.12 Ga. The similar age distribution of Pirangdong and Luoquan Series of 2.6 - 2.5 Ga, 2.1 - 2.0 Ga, 1.85 - 1.8 Ga and 1.6 Ga corresponds to Precambrian significant tectonic- magmatic- thermal events of the NCC, which indicates that the Precambrian basement rocks of the NCC are main provenances of both Pirangdong and Luoquan Series. This also confirm that the Phyongnam Basin is a part of Neoproterozoic sedimentary covers of the NCC. It is worth to mention that 1.2 - 1.0 Ga and 900 - 850 Ma magmatic rocks in the NCC are seldom reported which relate to the assemblage and breakup of Rodinia Supercontinent. whereas they crop out widely in the South China Craton (SCC) and was always regarded as a mark distingusing the two craton. 1.2 - 1.0 Ga and 900 - 850 Ma zircon ages preserved in sedimentary rocks not only in North Korea and Southern NCC but also in Northeast NCC and East NCC provide data to compare Neoproterozoic strata between NCC and SCC and important clues to

  13. Formação do acadêmico de enfermagem: vivência na atenção a usuários de drogas psicoativas La formación del estudiante de enfermería: vivencia en la atención de los usuarios de drogas Nursing student's education: experience in the care to users of psychoactive drugs

    Directory of Open Access Journals (Sweden)

    Andiara Araújo Cunegundes de Brito

    2012-06-01

    Full Text Available O artigo objetivou relatar a experiência vivenciada por acadêmicos de enfermagem na Fundação Belo Amor, localizada no município de Caicó/RN, serviço de reabilitação psicossocial para usuários de álcool e outras drogas, buscando reconhecer a rede de saúde mental no município. A vivência partiu da disciplina Políticas Públicas de Saúde Mental, ofertada no sexto período do curso de graduação em enfermagem, e compreendeu dois momentos: a captação da realidade e o desenvolvimento de duas técnicas de grupo. Através das atividades realizadas foi possível aproximar-se da história de vida dos usuários; apreender sentimentos e/ou situações que os levaram ao consumo de drogas ou recaídas; e a vivência do processo de reabilitação atual e as perspectivas futuras. Esta experiência possibilitou que os acadêmicos compreendessem a importância deste serviço para a rede de saúde mental, e ainda para a formação generalista, crítica e reflexiva do profissional enfermeiro.El artículo tiene por objetivo presentar la experiencia de estudiantes de enfermería en la Fundação Belo Amor, ubicado en el municipio de Caicó/RN, servicio de rehabilitación psicosocial para los usuarios de alcohol y otras drogas, con el fin de reconocer la red de salud mental en el municipio. La experiencia viene de la disciplina de Política Pública de Salud Mental, presentada en el sexto semestre del curso de graduación en enfermería, y constaba de dos fases: la captura de la realidad y el desarrollo de dos técnicas de grupo. A través de las actividades realizadas fue posible acercarse a la historia de vida de los usuarios; los sentimientos y/o situaciones que los condujeran al uso de drogas o las recaídas; la experiencia del proceso de rehabilitación actual y de las perspectivas futuras. Esta experiencia posibilitó que los estudiantes entendieran la importancia de este servicio para la red de salud mental, y para la educación en general

  14. ANÁLISIS DE SENSIBILIDAD ESPACIAL DE UN MODELO HIDRODINAMICO DEL EMBALSE PUNCHINÁ (ANTIOQUIA ANÁLISE DE SENSIBILIDADE ESPACIAL DE UM MODELO HIDRODINÂMICO DO RESERVATÓRIO PUNCHINÁ (ANTIOQUIA SPATIAL SENSITIVITY ANALYSIS OF A HYDRODYNAMIC MODEL OF THE PUNCHINÁ RESERVOIR (ANTIOQUIA

    Directory of Open Access Journals (Sweden)

    Carlos Alejandro Escobar

    2010-12-01

    Full Text Available Se presenta en este artículo una metodología que permite cuantificar explícitamente el valor óptimo de los parámetros numéricos de un modelo hidrodinámico, tales como la resolución de la malla (en dirección horizontal y vertical y el intervalo temporal de cálculo. El procedimiento se basa en un análisis de beneficio-costo, donde se busca obtener un balance entre la calidad de la solución numérica y el costo computacional requerido para lograrla. El carácter espacial del análisis de sensibilidad propuesto permite determinar en cada una de las celdas de la malla de cálculo la alteración en la solución numérica debida a variaciones en los parámetros físicos o numéricos que constituyen el modelo. Lo anterior posibilitó identificar en el interior del embalse Punchiná dónde y en qué grado son relevantes la resolución de la malla, el intervalo de cálculo temporal, la rugosidad del lecho y el coeficiente de viscosidad de remolino.Apresenta-se neste artigo uma metodologia que permite quantificar explicitamente o valor ótimo dos parâmetros numéricos de um modelo hidrodinâmico, tais como a resolução da malha (em direção horizontal e vertical e o intervalo temporal de cálculo. O procedimento baseia-se em uma análise de benefício-custo, onde se procura obter um balanço entre a qualidade da solução numérica e o custo computacional requerido para consegui-la. O caráter espacial da análise de sensibilidade proposta permite determinar em cada uma das células da malha de cálculo a alteração na solução numérica devida a variações nos parâmetros físicos ou numéricos que constituem o modelo. O anterior possibilitou identificar no interior do reservatório Punchiná onde e em que grau são relevantes a resolução da malha, o intervalo de cálculo temporário, a rugosidade do leito e o coeficiente de viscosidade de redemoinho.This paper presents a methodology to assess explicitly the optimal value of the

  15. Percepções de urgência para usuários e motivos de utilização do serviço de atendimento pré-hospitalar móvel Percepciones de urgencia para usuarios y motivos de utilización del servicio de atención prehospitalaria móvil Users' perceptions of urgency and reasons for using the mobile pre-hospital care service

    Directory of Open Access Journals (Sweden)

    Kelly Piacheski de Abreu

    2012-06-01

    Full Text Available Os Serviços de Atendimento Móvel de Urgência atendem situações urgentes de diversas naturezas, e a procura ocorre conforme percepção do usuário sobre o que é urgente. O objetivo foi analisar percepções de urgência dos usuários que demandam atendimento no Serviço de Atendimento Móvel de Urgência de Porto Alegre e identificar motivos dessas solicitações. Estudo exploratório-descritivo, com abordagem qualitativa, com coleta de dados por meio de entrevistas semiestruturadas realizadas por telefone, no período de fevereiro a abril de 2009. Foi utilizada análise temática para tratamento das informações. Os usuários consideram como urgência condições que oferecem risco à vida, que necessitam de atendimento rápido, situações visíveis como sangramento, doenças crônicas e dificuldades de transporte e locomoção. Os usuários sentem-se motivados a acionar o serviço pela rapidez, pela gratuidade e para obter transporte. As percepções dos usuários sobre urgência são condizentes com a perspectiva biomédica dos profissionais de saúde e próprias do contexto social.Los Servicios de Atención Móvil de Urgencias atienden situaciones urgentes de diversa naturaleza y la solicitud de tal servicio corresponde con la percepción del usuario sobre lo que es urgente. El objetivo fue analizar las percepciones de urgencia de usuarios que solicitan atención en un Servicio de Atención Móvil de Urgencias de Porto Alegre e identificar los motivos referidos. Estudio exploratorio-descriptivo con enfoque cualitativo. Los datos fueron recolectados mediante entrevistas semiestructuradas realizadas telefónicamente, durante el período comprendido entre febrero y abril de 2009. Se utilizó Análisis Temático para tratamiento de la información. Los usuarios consideran urgentes condiciones que ofrecen riesgo para la vida, que necesitan de pronta atención, situaciones visibles como sangrado, enfermedades crónicas y dificultades de

  16. Gasto do Ministério da Saúde com medicamentos: tendência dos programas de 2002 a 2007 Gasto del Ministerio de la Salud con medicamentos: tendencia de los programas de 2002 a 2007 Ministry of Health's spending on drugs: program trends from 2002 to 2007

    Directory of Open Access Journals (Sweden)

    Fabiola Sulpino Vieira

    2009-08-01

    Full Text Available OBJETIVO: Analisar a evolução do gasto do Ministério da Saúde com medicamentos. MÉTODOS: O gasto total (agregado do Ministério da Saúde com medicamentos e de seus programas (desagregado foram analisados para o período de 2002 a 2007. As ações que financiaram a aquisição de medicamentos foram obtidas no sistema Siga Brasil e classificadas segundo os programas de assistência farmacêutica. Os valores liquidados foram identificados para cada programa. Para 2006 e 2007, foram pesquisadas as aquisições de anti-retrovirais. Em relação aos medicamentos do Programa de Dispensação em Caráter Excepcional, confrontaram-se os dados da ação orçamentária com aqueles disponíveis no Sistema Único de Saúde. Os valores obtidos foram deflacionados aplicando-se o Índice de Preços ao Consumidor Amplo. Foi efetuada análise exploratória dos dados. RESULTADOS: O gasto em 2007 foi 3,2 vezes o de 2002 e a participação do gasto com medicamentos no gasto total aumentou de 5,4% em 2002 para 10,7% em 2007. O gasto com os medicamentos da atenção básica teve aumento de 75% e com medicamentos dos programas estratégicos, de 124%. No caso dos anti-retrovirais o aumento foi de aproximadamente 6%, mas com aumento de 77% de 2005 a 2006, seguida de redução de 29% de 2006 a 2007. O aumento mais expressivo do gasto foi observado com os medicamentos de dispensação em caráter excepcional, 252% de 2003 a 2007. CONCLUSÕES: Houve aumento significativo do gasto com medicamentos entre 2002 e 2007, havendo maior participação nesse gasto dos anti-retrovirais e medicamentos de dispensação excepcional, os quais são constituídos por número expressivo de fármacos protegidos por patentes.OBJETIVO: Analizar la evolución del gasto del Ministerio de la Salud de Brasil con medicamentos. MÉTODOS: El gasto total (agregado del Ministerio de la Salud con medicamentos y de sus programas (desagregado fue analizado para el período de 2002 a 2007. Las

  17. Constraining the composition and thermal state of lithospheric mantle from inversion of seismic data: Implications for the Kaapvaal and Siberian cratons

    Science.gov (United States)

    Kuskov, Oleg; Kronrod, Victor; Prokofyev, Alexey; Zhidikova, Alevtina

    2010-05-01

    Quantitative estimation of the temperature distribution in the Earth's mantle is a key problem in petrology and geophysics. In this study, we discuss the method of estimating temperature, composition and thickness of the subcontinental lithospheric mantle beneath some Archean cratons from absolute seismic velocities. The phase composition and physical properties of the lithospheric mantle were modelled within the Na2O-TiO2-CaO-FeO-MgO-Al2O3-SiO2 system including the non-ideal solid solution phases. For the computation of the phase diagram for a given chemical composition, we have used a method of minimization of the total Gibbs free energy combined with a Mie-Grüneisen equation of state. Our forward calculation of phase diagram, seismic velocities and density and inverse calculation of temperature includes anharmonic and anelastic parameters as well as mineral reaction effects, including modes and chemical compositions of coexisting phases. Sensitivity of density and velocities to temperature, pressure and composition was studied. Inverse code computes the temperature distribution in the upper mantle from seismic and compositional constraints. The output results contain the self-consistent information on phase assemblages, densities and velocities. The approach used here requires a small number of thermodynamically defined parameters and has important advantages over earlier procedures, which contain no information about entropy, enthalpy and Grüneisen parameter. We inverted for temperature the recent P and S velocity models of the Kaapvaal craton as well as the IASP91 reference Earth model. Several long-range seismic profiles were carried out in Russia with Peaceful Nuclear Explosions (PNE). The velocity models from PNEs recorded along these profiles were used to infer upper mantle temperature profiles beneath the Siberian craton. The seismic profiles were inverted on the basis of low and high temperature xenoliths of garnet peridotites from kimberlite pipes of

  18. Rock in Rio: forever young

    Directory of Open Access Journals (Sweden)

    Ricardo Ferreira Freitas

    2014-12-01

    Full Text Available The purpose of this article is to discuss the role of Rock in Rio: The Musical, as herald of megafestival Rock in Rio. Driven by the success that musicals have reached in Brazil, we believe that the design of this spectacle of music, dance and staging renews the brand of the rock festival, once it adds the force of young and healthy bodies to its concept. Moreover, the musical provides Rock in Rio with some distance from the controversal trilogy of sex, drugs and rock and roll, a strong mark of past festivals around the world. Thus, the musical expands the possibilities of growth for the brand.

  19. Reprodutibilidade e validade do Questionário Internacional de Atividade Física (IPAQ em homens idosos Reproducibilidad y validez del Cuestionario Internacional de Actividad Física (IPAQ en hombres ancianos Reproducibility and validity of the International Physical Activity Questionnaire (IPAQ in elderly men

    Directory of Open Access Journals (Sweden)

    Tânia R. Bertoldo Benedetti

    2007-02-01

    Full Text Available É necessário encontrar meios para quantificar de maneira eficiente e econômica o nível de atividade física da população. Os questionários são formas viáveis e econômicas, embora seja discutível a fidedignidade dessas medidas. Este estudo objetivou determinar a reprodutibilidade e a validade do Questionário Internacional de Atividade Física (IPAQ em homens idosos. A amostra foi composta por 29 homens idosos acima de 60 anos, com média de idade de 66,6 anos (DP = 4,3, participantes do programa de extensão da Universidade Federal de Santa Catarina. Os instrumentos utilizados foram: a IPAQ, forma longa; b pedômetro; e c Diário de Atividade Física de Bouchard (DAF. Para a reprodutibilidade foram realizadas duas aplicações do IPAQ, com intervalo de 21 dias (r s = 0,95. A análise estatística adotada foi a correlação de Spearman (r s, o percentual de concordância (%C, o índice kappa (k e a plotagem de Bland e Altman. A amostra foi dividida, utilizando-se como critério a mediana. A reprodutibilidade apresentou correlação de r s = 0,95. A associação entre o IPAQ e o DAF foi de: r s = 0,38; %C = 69 e k = 0,04 e a associação entre o IPAQ e o pedômetro de: r s = 0,24; %C = 62 e k = 0,19. Concluiu-se que a validade variou de moderada a baixa, enquanto a reprodutibilidade foi adequada.Es necesario encontrar medios para cuantificar de manera eficiente y económica el nivel de actividad física de la población. Los cuestionarios son formas viables y económicas, aunque se discuta la fidedignidad de estas medidas. Este estudio ha tenido como objetivo determinar la reproducibilidad y la validez del Cuestionario Internacional de Actividade Física (IPAQ en hombres ancianos. La muestra se compuso de 29 hombres ancianos con más de 60 años, con edad media de 66,6 años (DP = 4,3, participantes del programa de extensión de la Universidad Federal de Santa Catarina. Los instrumentos utilizados fueron: a IPAQ, forma larga; b ped

  20. Caracterização epidemiológica dos usuários do Centro de Atenção Psicossocial Casa Aberta Caracterización epidemiológica de los usuarios del Centro de Atención Psicosocial "Casa Aberta" Epidemiological characterization of the users of Casa Aberta, a psychosocial attention center

    Directory of Open Access Journals (Sweden)

    Cátula da Luz Pelisoli

    2005-12-01

    Full Text Available INTRODUÇÃO: A partir do processo de desinstitucionalização psiquiátrica, os serviços substitutivos têm sido a principal porta de entrada para as pessoas que buscam o atendimento em saúde mental. Neste sentido, torna-se relevante a caracterização dos usuários desses serviços. OBJETIVO: Delinear o perfil epidemiológico da população de um Centro de Atenção Psicossocial de um município do estado do Rio Grande do Sul. RESULTADOS: As categorias diagnósticas mais prevalentes foram transtornos de humor e transtornos neuróticos relacionados ao estresse e somatoformes; existe uma fraca adesão ao tratamento e uma baixa média de consultas por paciente; a fonte de demanda mais relevante é a demanda espontânea; a psiquiatria obtém a maior procura dos usuários. CONCLUSÃO: Concluiu-se pela falta de projetos terapêuticos que contemplem uma maior diversidade de procedimentos, de atuação mais freqüente na psiquiatria e de processos interdisciplinares. Concluímos também pela necessidade de algumas mudanças operacionais, como a formação de grupos terapêuticos, a criação de um protocolo padrão a ser seguido pelos diferentes profissionais, o remanejo de pacientes psiquiátricos e a realização de novas pesquisas, bem como a replicação deste estudo.INTRODUCCIÓN: A partir del proceso de desinstitucionalización de la psiquiatría, nuevos servicios tienen sido la principal puerta de entrada para las personas que buscan la atención en salud mental. Así, se hace relevante la caracterización de los usuarios de esos servicios. OBJETIVO: Este artículo tiene por objetivo presentar los resultados de una investigación de caracterización de la población de un Centro de Atención Psicosocial de un municipio del estado de Rio Grande do Sul, Brasil. RESULTADOS: Los resultados de este estudio presentan: las categorías diagnósticas que más predominaron fueron Trastornos de humor y Trastornos neuróticos relacionados al estrés; hay

  1. Avaliação de desempenho e integração docente-assistencial nos hospitais universitários Evaluación del desempeño e integración docente-asistencial en los hospitales universitarios Assessment of teaching-health care integration and performance in university hospitals

    Directory of Open Access Journals (Sweden)

    Maria Stella de Castro Lobo

    2010-08-01

    Full Text Available OBJETIVO: Avaliar o desempenho e a integração entre as dimensões de assistência e de ensino dos hospitais universitários brasileiros. MÉTODOS: Um modelo de data envelopment analysis em redes (network DEA foi elaborado para aferir o desempenho de hospitais universitários federais, o qual permite considerar a relação entre as dimensões de ensino e de assistência, simultaneamente. Foram utilizados os dados do Sistema de Informação dos Hospitais Universitários do Ministério da Educação, referentes ao segundo semestre de 2003, e os resultados do modelo network foram comparados àqueles dos modelos DEA tradicionais para avaliação das vantagens da nova proposta metodológica. RESULTADOS: A eficiência dos hospitais avaliados variou entre 0,19 e 1,00 (média = 0,54. O escore dimensional mostrou que os hospitais priorizam o ganho de eficiência assistencial. Observou-se que há necessidade de dobrar o número de alunos de medicina e de aumentar os residentes em 14% para que se tornem eficientes na dimensão de ensino. CONCLUSÕES: O modelo mostrou utilidade de aplicação tanto para os gestores das unidades, visando à integração docente-assistencial, como para os órgãos reguladores, na definição de políticas e incentivos.OBJETIVO: Evaluar el desempeño y la integración entre las dimensiones de asistencia y de enseñanza de los hospitales universitarios brasileros. MÉTODOS: Un modelo de data envelopment analysis en redes (network DEA fue elaborado para contrastar el desempeño de hospitales universitarios federales, permitiendo considerar la relación entre las dimensiones de enseñanza y de asistencia, simultáneamente. Fueron utilizados los datos del Sistema de Información de los Hospitales Universitarios del Ministerio de Educación de Brasil, correspondientes al segundo semestre de 2003, y los resultados del modelo network fueron comparados con aquellos modelos DEA tradicionales para evaluación de las ventajas de la

  2. Modelacion del crecimiento de Albizia niopoides por metodos dendrocronologicos

    National Research Council Canada - National Science Library

    Giraldo, Victor David; del Valle, Jorge Ignacio

    2012-01-01

    El crecimiento anual de los anillos en los arboles de los bosques tropicales es bastante frecuente y se evidencio en los arboles de Albizia niopoides, que crecen en el canon del rio Porce, cordillera...

  3. Nd-Sr isotopic geochemistry and U-Pb geochronology of the Fe granitic gneiss and Lajedo Granodiorite: implications for paleoproterozoic evolution of the Mineiro Belt, southern Sao Francisco craton, Brazil

    Energy Technology Data Exchange (ETDEWEB)

    Teixeira, Wilson [Universidade de Sao Paulo (USP), SP (Brazil). Inst. de Geociencias. Centro de Pesquisas Geocronologicas]. E-mail: wteixeir@usp.br; Avila, Ciro Alexandre [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Museu Nacional. Dept. de Geologia e Paleontologia]. E-mail: avila@mn.ufrj.br; Nunes, Luciana Cabral [Universidade de Sao Paulo (USP), SP (Brazil). Inst. de Geociencias]. E-mail: luciana@igc.usp.br

    2008-07-01

    The Fe granitic gneiss and Lajedo granodiorite belong to a voluminous felsic-mafic plutonism, tectonically linked to Paleoproterozoic magmatic evolution of the Mineiro Belt, southern portion of the Sao Francisco Craton, central-eastern Brazil. The Fe pluton is located north of the Lenheiros shear zone and is intrusive with respect to the Rio das Mortes greenstone belt and pyroxenite - gabbroic bodies, as indicated by xenoliths of gneiss and amphibolite, in the first case, and pyroxenite in the latter. The Lajedo granodiorite is located south of the Lenheiros shear zone and cuts the metamafic rocks of the Forro peridotite - pyroxenite and mafic and intermediate rocks of the Nazareno greenstone belt, as evidenced by xenoliths from the latter unit. The modal composition of the Fe granitic gneiss lies within the ranges of monzogranite and syenogranite. It is peraluminous and shows a large variation in K{sub 2}O content, which implies a middle-K calc-alkaline to high-K calc-alkaline tendency. The Lajedo modal composition is consistent with granodioritic and tonalitic compositions. It indicates a predominantly peraluminous composition and calc-alkaline character. The U-Pb zircon crystallization age of the Fe granitic gneiss is 2191 {+-} 9 Ma, whereas the Lajedo granodiorite yields 2208 {+-} 26 Ma. The Nd/Sr characteristics of the Fe and Lajedo plutons are consistent with mixtures of enriched mantle (EMI-type), DMM and crustal components during magma genesis in a plutonic arc setting, while the low {sup 87}Sr/{sup 86}Sri ratios point to contribution of mafic rock protoliths during magma genesis. This is also in accordance with the characteristic xenoliths observed within the investigated plutons from the Nazareno and Rio das Mortes greenstone belts. The Fe granitic gneiss and Lajedo granodiorite show tectonic characteristics which are comparable to those of nearby coeval plutons: Brito quartz-diorite (2221 +- 2 Ma), Brumado de Cima granodiorite (2219 {+-} 2 Ma), Brumado

  4. Magmatic microgranular enclaves of the northeast of Mato Grosso, Brazil, SE Amazonian Craton: Insights into the magmatism of the Uatumã Supergroup on the basis of field and petrological data

    Science.gov (United States)

    Tarelow Neto, João; Pierosan, Ronaldo; Barros, Márcia Aparecida de Sant'Ana; Chemale, Farid, Jr.; Santos, Fernanda Silva

    2017-10-01

    Felsic and mafic microgranular enclaves occurs hosted in Paleoproterozoic felsic volcanic and plutonic rocks of the Iriri Group and Rio Dourado Intrusive Suite that crop out in the northeast of the Brazilian state of Mato Grosso as part of the Uatumã Supergroup in the SE Amazonian Craton. The volcanic rocks consist of dacites, rhyolites and ignimbrites of the Iriri Group among which dacites yielded a crystallization age of 1895 ± 7 Ma. The granitoids are composed of syenogranites, and monzogranites along with subordinate granodiorites. The granite pluton of syenogranite composition belongs to the Rio Dourado Intrusive Suite and was previously dated at 1876 ± 39 Ma. Mafic enclaves show petrographic features that suggest magma mingling processes and may be classified as olivine-clinopyroxene gabbro, clinopyroxene-hornblende gabbro, biotite-clinopyroxene diorite, biotite-hornblende diorite, and biotite-quartz diorite. Geochemical patterns of dioritic enclaves fit with those of the mafic rocks of the Santa Inês Intrusive Suite and suggest that they are comagmatic. The felsic enclaves consist of quartz monzonites, monzogranites and quartz-rich granitoids, with geochemical patterns and ages compatible with those of the Iriri Group. U-Pb dating of a granodioritic enclave hosted by a syenogranite of the Rio Dourado Intrusive Suite yielded three distinct ages: a Paleoproterozoic magmatic age around 1.87 Ga; a Paleoproterozoic inherited age of 2001 ± 7 Ma; and Neoarchean inherited ages ranging from 2512 to 2767 Ma. The felsic enclaves may have been derived from crustal melts, and contain restitic zircon grains, or chilled margins with zircon removed from the wall rocks. The recognition of diverse geochemical patterns of felsic and mafic enclaves suggests that the study area can represent the top of a shallow complex magma chamber that experienced a number of different replenishment events from diverse sources. The mafic enclaves and their coeval enclosing volcanic rocks

  5. Gravity Anomalies, Seismic Structure and Subsidence History of the Parnaíba Cratonic Basin, Northeast Brazil

    Science.gov (United States)

    Tozer, B.; Watts, A. B.; Daly, M.

    2016-12-01

    Cratonic basins are characterized by their sub-circular shape, long-lived (>150 Myr) subsidence, shallow marine/terrestrial sediments that young towards the centre of the basin and thick seismic lithosphere. Despite the recognition of >20 basins world-wide, the paucity of geological and geophysical data over these basins means their origin remains enigmatic. In order to address this problem, we have undertaken an integrated analysis of the Parnaíba cratonic basin, NE Brazil using a 1400 km long seismic reflection profile recorded to 20 s TWTT, field observations, well logs, gravity data acquired at 1 km intervals and five wide-angle reflection/refraction receiver gathers recorded at offsets up to 100 km. We find a depth to pre-Paleozoic basement and Moho of 3.5 and 41 - 43 km respectively beneath the basin centre. A prominent mid-crustal reflection (MCR) can be tracked laterally for 300 km at depths between 17 - 25 km. A low-fold wide-angle receiver gather stack shows that the crust below the MCR is characterized by a 4 s TWTT package of reflections. Forward gravity modelling suggests that the MCR represents the upper surface of a high-density (+175 kg m-3) lower crustal body, likely of magmatic origin. Backstripping of biostratigraphic data from wells in the centre of the basin show an exponentially decreasing subsidence. We show that process-oriented gravity and flexure modelling suggest that the basin cannot be due to extension as this does not account for the observed gravity anomaly and predicts too shallow a Moho ( 34 km). Equally, extensive rift structures are not observed on the deep seismic profile. Therefore, other processes must be invoked to explain the basin subsidence. Process-oriented gravity modelling shows that a dense body in the lower crust, that has loaded and flexed the crust downwards, together with sediment loading, provides a satisfactory fit to the regional gravity anomaly. This model is consistent with wide-angle seismic data, which

  6. Caracterização das atividades diárias do enfermeiro chefe de seção em um hospital universitário Caracterización de las actividades diarias del enfermero jefe de sección en un hospital universitario Characterization of nurses daily activities at an university hospital

    Directory of Open Access Journals (Sweden)

    Silvia Cristina Mangini Bocchi

    1996-07-01

    Full Text Available Trata-se de um estudo descritivo com a finalidade de identificar se o planejamento da assistência de enfermagem faz parte das atividades diárias dos 19 enfermeiros chefes de seção de um Hospital Universitário, através da análise temática de suas entrevistas. Verificou-se que das 309 atividades relatada pelos entrevistados, 71,51% são administrativas, 19,43% delegáveis, 18,74% assistenciais e 0,32% relacionadas apenas ao ensino, visto que as atividades com pesquisas não foram relatadas por eles. Dentre as atividades administrativas, o planejamento formal da assistência de enfermagem não foi mencionado como atividade diária desses enfermeiros. Alicerçadas nos resultados, as autoras fazem recomendações à Instituição em estudo e aos Cursos de Graduação em Enfermagem.Esta investigación estudió las actividades diárias de 19 enfermeros jefes de sección de un Hospital Universitário, a través del análisis de contenidos de sus entrevistas, según Bardin. Se verificó que de las 309 actividades relatadas por los entrevistados, 71,51% son administrativas, desprovidas de planificación de assistencia de enfermería, 19,43% delegables, 18,74% asistenciales y apenas 0,32 relacionadas a la enseñanza, sevió que las actividades con invetigación no fueron relatadas por ellos. Frente a los hechos. Las autoras hacen recomendaciones ala instituición y a los Cursos de Pregrado de Enfermería.This descriptive has the purpose of identifying if nursing care planning takes part of the daily activities of 19 head nurses in an University hospital through thematic analysis of their interviews. It was checked out that from 309 reported activities, 71,51% are administrative, 19,43% delegated, 18,74% of assistance and 0,32% related teaching, considering that the activities related to research were not reported by them. Among the administrative tasks, the formal planning of nursing assistance was not mentioned as daily activities of these head

  7. Dobreflection: An Exceptional Example of Basin Inversion In The East-european Craton

    Science.gov (United States)

    Bayer, U.; Stovba, S.; Maystrenko, Y.; Stephenson, R.; Tolkunov, A.; Dobreflection Working Group

    DOBREflection is a joint project of Ukrainian organisations (Ukrgeofisika and the Institute of Geophysics of the National Academy of Sciences) and an international European consortium that included acquisition of some 250 km of deep seismic re- flection data in 2000 and 2001. The aim was to study the south-eastern continuation of the Dnieper-Donets Basin (DDB) into the coal mining areas of the Donbas Foldbelt (DF), including the sedimentary fill and its deformation as well as the structure of the deeper crust. The DF is the strongly inverted and compressionally deformed part of the DDB, which is a Late Devonian rift basin located on the south-western part of the East-European Craton (EEC) between the Ukrainian Shield (UkS) to the south-west and the Voronezh Massif (VM) to the north-east. DOBREflection reveals that the base of the predominantly Devonian and Carboniferous sedimentary succession in the DF reaches a maximum of about 20-km in its axial part. However, the Donbas area has been much more seriously affected by secondary tectonic events than those parts of the DDB further north. In particular, significant shortening in response to Late Cretaceous Eo-Alpine compression is in evidence. While syn- and post-rift faults with offsets up to more than 3-km disrupt the basement horizon, the shortening (basin inversion) is displayed mainly as folding within the sedimentary succession. The fold patterns sug- gest a detachment surface most likely located within the Upper Devonian sequence, perhaps indicating the presence of salt rich layers. Shortening is also accommodated on two important crustal-scale structures. The first of these is a slightly inclined listric shear zone, or thrust, cutting the entire crust - including the UkS Moho - south of the DF, upwards through the complete sedimentary package ending in the northern part of the DF within an area of reverse faults exposed at the surface. The latter have vertical offsets up to a few kilometres whereas the

  8. Geology, Mineralogy and Geochemistry of the Mount Deans Pegmatite Field, Eastern Yilgarn Craton/Australia

    Science.gov (United States)

    Dittrich, Thomas; Seifert, Thomas; Schulz, Bernhard

    2014-05-01

    Lithium-Cesium-Tantal (LCT) pegmatites are an important source for the rare metals Li, Cs and Ta, commodities that are now consumed in a rapidly increasing amount in high technology applications. Despite that LCT pegmatites are characteristic features for the Archaean geology of Western Australia, only the Greenbushes, Cattlin Creek and Wodgina deposits are currently exploited for Li and Ta. Therefore, Western Australia still possesses a great potential for the identification of additional resources for Li, Ta and possibly also Cs. The present study presents an overview of the geology, mineralogy and geochemistry of the Mount Deans pegmatite field, located c. 13 km S of Norseman, in the Eastern Goldfields Terrane of the Yilgarn Craton. The Mount Deans pegmatite field is Meso- to Neo-Archaean in age and hosted in the N-S trending Dundas Hill greenstone belt. The pegmatite field covers an area of 6 km in N-S and 4 km in E-W extension and comprises several dozens of individual pegmatite sheets and lenses. Structurally the pegmatite bodies are subdivided into two distinct types. Type I occurs predominantly in the southern part, is gently dipping (5-10°) to various directions and has variable thicknesses (3-25 m). Type II occurs in the northern part of the pegmatite field, dips steeply (50-90°) with a general N-S striking and has only a limited thickness (10 cm to 5 m). A clear distinction can also be made through their internal structure and mineralogy. Type I pegmatites exhibit a distinct structural and mineralogical zoning, whereas type II pegmatites are unzoned. Also albite, zinnwaldite, lepidolite and quartz form the bulk of the pegmatite; lepidolite is considerably more common in type II. Based on its peraluminous and strongly calc-alkaline character, as well as its enrichment in rare elements (i.e., Li, Rb, Cs, Ta, Nb, F), the pegmatites at Mount Deans are interpreted as LCT-pegmatites. However, despite the occurrence of rare element minerals like cassiterite

  9. ENTENDENDO A DINÂMICA CULTURAL EM XINGÓ NA PERSPECTIVA INTER SÍTIOS: INDÚSTRIAS LÍTICAS E OS LUGARES PERSISTENTES NO BAIXO VALE DO RIO SÃO FRANCISCO, NORDESTE DO BRASIL (Entendiendo la dinámica cultural en Xingó en la perspectiva inter-sitios: industrias líticas y los lugares persistentes en el bajo valle del río São Francisco, Nordeste del Brasil; Understanding cultural dynamics in Xingó from an intersite perspective: lithic industries and persistent places in the São Francisco river low valley, Northeastern Brazil

    Directory of Open Access Journals (Sweden)

    Marcelo Fagundes

    2010-06-01

    Full Text Available O presente artigo tem como objetivo apresentar parte dos resultados da tese de doutoramento acerca da dinâmica cultural evidenciada em dezesseis sítios arqueológicos localizados na Área 03 de Xingó, baixo vale do rio São Francisco, Brasil. Assim, apresentaremos os dados obtidos da pesquisa empírica da organização tecnológica de conjuntos líticos e como foi possível, por meio desses resultados, inferir sobre questões acerca da distribuição espacial dos sítios arqueológicos e suas possíveis inter-relações de forma a indicar um modelo de uso da paisagem à compreensão do sistema regional de assentamento em terraços do baixo vale do rio São Francisco. ESPAÑOL: Este artículo tiene como objetivo presentar parte de los resultados de mi tesis de doctorado sobre la dinámica cultural evidenciada en dieciséis sitios arqueológicos ubicados en el Área 03 de Xingó, bajo valle del río São Francisco, Brasil. Por lo tanto, se presentarán los datos obtenidos de la investigación empírica de la organización tecnológica de conjuntos líticos para inferir, por medio de esos resultados, aspectos sobre la distribución espacial de los sitios arqueológicos y sus posibles interrelaciones, buscando generar un modelo de uso del paisaje para la comprensión del sistema regional de asentamiento en bancales del bajo valle del río São Francisco. ENGLISH: This paper presents part of the results of my doctoral thesis on the cultural dynamics of sixteen archaeological sites situated in Area 03 in Xingó, São Francisco river valley, Brazil. Empirical data are presented that demonstrate the technological organization of the lithic industries at the sites. Then, through these data, it is shown what we can infer about the archaeological sites’ spatial distribution and interrelationship. These inferences are used to indicate a model of landscape use that can be used to understand the regional system of distribution and placement of

  10. The intraoperative surgical context. Appreciations from a group of patients and from the nursing team El contexto quirúrgico transoperatorio. Apreciaciones de un grupo de pacientes y del equipo de enfermería O contexto cirúrgico intra-operatório. Apreciações de um grupo de pacientes e da equipe de enfermagem

    Directory of Open Access Journals (Sweden)

    Ángela María Salazar Maya

    2012-08-01

    sujetetarse al cuidado total. En cambio, para el personal de enfermería el mismo contexto le implica un comportamiento diferente que se mueve entre dos ambientes: por una parte, el 'escenario' -cuando se está en frente del paciente despierto-, que involucra un comportamiento mesurado y diplomático; por otra, 'tras bastidores'-con la persona bajo los efectos de la anestesia- por el contrario, el comportamiento es más libre y desinhibido. Conclusión. El contexto quirúrgico transoperatorio es diferente tanto para los pacientes como para el equipo de enfermería. Sin embargo, es necesario tener presente que están al cuidado de un ser humano que requiere respeto y un trato digno. Por consiguiente, se debe promover un cuidado bajo una perspectiva ética.Objetivo. Interpretar a experiência de estar inconsciente ou alerta de um grupo de pacientes durante o ato cirúrgico e as apreciações dos membros da equipe de enfermaria sobre o mesmo contexto. Metodologia. Estudo qualitativo com enfoque na teoria fundamentada. A informação se coletou mediante a observação e, b entrevistas a 20 pacientes, 19 auxiliares de enfermaria e 8 enfermeiras que laboram em centros cirúrgicos de segundo nível do Vale de Aburrá, Colômbia. Resultados. Desde dando-me conta de tudo até estando a graça do outro, durante o transoperatório, o paciente transita por diferentes estados de consciência que lhe significa estar sujeito ao cuidado total. Em mudança, para o pessoal de enfermaria o mesmo contexto lhe implica um comportamento diferente que se move entre dois ambientes: o 'palco' -quando se está em frente do paciente desperto-, que envolve um comportamento mesurado e diplomático; em mudança, 'depois de bastidores'-com a pessoa sob os efeitos da anestesia- o comportamento é mais livre e desinibido. Conclusão. O contexto cirúrgico transoperatório é diferente para os pacientes e para a equipe de enfermaria. No entanto, é necessário ter presente que estão cuidando a um ser humano

  11. Mythical imaginary in rural agricultural practices on properties of La Vieja river basin, Colombia Imaginarios míticos en las prácticas agropecuarias rurales en fincas de la cuenca del rio La Vieja, Colombia

    Directory of Open Access Journals (Sweden)

    Sebastián Ramírez Arias

    2010-01-01

    Full Text Available This work analyzes the mythological belief or superstitions associated with farming and conservation activities in nine rural productive units on the river basin La Vieja, Colombia. The elderly people recognize the influence of multiple stories over productive and environmental conditions that are an important part of success or fail on their rural activities. The beliefs were classified by their functionality and the activities they regulate. 14 myths that have any on the influence activities of cultivate, breeding, conservation and social regulation were described. The main element for discussion was the functionality, considering its relationship the distribution and application in the subsystems of productions in the farms with the age, the gender and the hierarchy position on the family structure. It was conclude that the flow of information between expert systems and systems of popular knowledge helps to construct an adapted system. An example is the use, in cattle farms, of different moon phases during the artificial insemination to ensure the pregnancy and sex of the breed.Este trabajo analiza las creencias mitológicas, agüeros o supersticiones asociadas con las actividades agropecuarias y de conservación en nueve unidades productivas rurales de la cuenca media del río La Vieja, Colombia. Plantea que las gentes de antaño reconocen la influencia de múltiples relatos sobre condiciones productivas y ambientales que redundan en el éxito o el fracaso de las actividades rurales. Las creencias se clasificaron según su funcionalidad y las actividades que regulan. Se describieron así 14 mitos que influyen en las actividades de cultivo, cría, conservación y regulación social. El principal elemento de discusión fue la funcionalidad, considerando la distribución y aplicación en los subsistemas de producción en la finca, la relación con la edad y el género y con la posición jerárquica en la estructura familiar. El flujo de

  12. [World deliberations in Rio].

    Science.gov (United States)

    Annis, B

    1991-01-01

    The United Nations Conference on Environment and Development (UNCED) was held in Rio de Janeiro in June 1992 and dealt with world trade, environmental education, environmental emergencies, the transfer of technology and financial resources, and the restructuring of international systems for tackling environmental problems. Other issues on the agenda were the protection of the atmosphere, the ozone shield, deforestation, the conservation of biological diversity, sustainable urban and rural development, and the safeguarding of human health and quality of life. The preparation for the conference took place through a series of meetings, which also featured the problems of rural areas in the Americas. Some environmental organizations based in Washington, D.C. had become impassive over the years and promoted bipartisan and apolitical issues in order to obtain funds. Nonetheless, some groups criticized the projects of the World Bank. In 1990 the World Bank established the World Environmental Program for developing countries, which envisioned the execution of 15 projects and 11 technical assistance proposals. Nongovernmental organizations (NGOs) were also active in this effort. The Interamerican Development Bank also launched a forest policy for preserving forest resources. This was the consequence of the 1982 scheme that aimed at protecting forest populations and promoting sustainable forest industries. At another conference of development specialists the discrimination against women was cited as a major factor in the deleterious use of natural resources. A new development concept was urged that would incorporate the rights and participation of women as a central strategy in solving the global environmental crisis. The global population is growing at a rate of 95 million people per year, which underlines the need for better representation of women, poor people, and rural areas in state agencies and multilateral and environmental organizations for promoting sustainable

  13. Geodynamic background for large-scale mineralization in the southern environs of the Siberian Craton in the Proterozoic

    Science.gov (United States)

    Budyak, A. E.; Goryachev, N. A.; Skuzovatov, S. Yu.

    2016-10-01

    The geodynamic position of the productive Kevaktinskii and Dal'netaiginskii stratigraphic units with Au-U mineralization is considered within the Baikal-Patom highland. The Au-U specialization of rocks of the Kevaktinskaya Group results from its formation in the environments of the passive continental margin with introduction of the juvenile material related to riftogenesis and further collision, whereas the same specialization of the Dal'netaiginskaya Group is explained by exhalation activity in the back-arc spreading zone. The formation of most of the Au and U large-scale deposits within the southern environs of the Siberian Craton was controlled by Paleozoic oogenesis upon closure of the Paleoasian Ocean.

  14. U-Pb thermochronology of the lower crust: producing a long-term record of craton thermal evolution

    Science.gov (United States)

    Blackburn, T.; Bowring, S. A.; Mahan, K. H.; Perron, T.; Schoene, B.; Dudas, F. O.

    2010-12-01

    The EarthScope initiative is focused on providing an enhanced view of the North American lithosphere and the present day stress field of the North American continent. Of key interest is the interaction between convecting asthenosphere and the conducting lithospheric mantle that underlie the continents, especially the cold ‘keels’ that underlie Archean domains. Cratonic regions are in general characterized by minimal erosion and or sediment accumulation. The Integration of seismic tomography, and mantle xenolith studies reveal a keel of seismically fast and relatively buoyant and viscous mantle; physical properties that are intimately linked with the long-term stability and topographic expression of the region. Missing from this model of the continental lithosphere is the 4th dimension--time--and along with it our understanding of the long-term evolution of these stable continental interiors. Here we present a thermal record from the North American craton using U-Pb thermochronology of lower crustal xenoliths. The use of temperature sensitive dates on lower crustal samples can produce a unique time-temperature record for a well-insulated and slowly cooling lithosphere. The base of the crust is insulated enough to remain unperturbed by any plausible changes to surface topography, yet unlike the subadjacent lithospheric mantle, contains accessory phases amenable to U-Pb dating (rutile, apatite, titanite). With near steady state temperatures in the lower crust between 400-600 °C, U-Pb thermochronometers with similar average closure temperatures for Pb are perfectly suited to record the long-term cooling of the lithosphere. Xenoliths from multiple depths, and across the craton yield time-temperature paths produced from U-Pb thermochronometers that record extremely slow cooling (<0.25 °C/Ma) over time scales of billions of years. Combining these data with numerical thermal modeling allow constraints to be placed on the dominant heat transfer mechanisms operating

  15. Polyphase neotectonic movements in the Gavilgarh Fault Zone, central Indian craton: evidences from geomorpho-tectonic analysis

    Science.gov (United States)

    Bhattacharjee, Dipanjan; Chattopadhyay, Anupam; Jain, Vikrant

    2014-05-01

    The central part of Indian craton is believed to be a stable continental region with low strain build-up and long earthquake recurrence periods. It comprises two major Archean cratonic fragments (i.e. the Bundelkhand and the Bastar Cratons) and a Proterozoic mobile belt called Central Indian Tectonic Zone (CITZ), along which the cratonic fragments were amalgamated in the Proterozoic. Gavilgarh Fault Zone (GFZ) is an important component of CITZ and is represented by a >250 km long, ENE-WSW trending fault line which demarcates the southern boundary of the Satpura mountains. Although the eastern part of the lineament shows evidences of polyphase tectonic movements in the Meso-Neoproterozic (Chattopadhyay and Khasdeo, 2011), there is no focussed analysis of neotectonic activity in this fault zone although a number of earthquakes have been recorded within the CITZ in last 100 years or so. The present study comprises structural mapping and geomorphological analysis of a 200 km long stretch of the GFZ lineament. GFZ shows evidences of reverse fault-slip movements that possibly resulted in an uplift of the northern side, as deeper level rocks (e.g. Paleozoic Gondwana sandstones) are juxtaposed against the overlying Deccan Trap basalts of Mesozoic age along the fault line. Crushing of basalts along the lineament, asymmetric folds within Gondwana sandstone, inclination of Anisotropic Magnetic Susceptibility (AMS) axes etc. provide evidences for fault-drag folding related to the post-Deccan reverse faulting. Drainages crosscutting the lineament adjusted with the tectonic uplift either by incising their own sediments and bed rock or by increasing their sinuosity, only in the northern side, as seen in the satellite images. Hypsometric Integral values suggest that the immature/in-equilibrated drainage basins were restricted in the north while mature/equilibrated basins developed in the south of the lineament. Longitudinal profiles and S-L Index of the river profiles, prepared

  16. Comparison of mantle lithosphere beneath early Triassic kimberlite fields in Siberian craton reconstructed from deep-seated xenocrysts

    Directory of Open Access Journals (Sweden)

    I.V. Ashchepkov

    2016-07-01

    Kharamai mantle clinopyroxenes represent three geochemical types: (1 harzburgitic with inclined linear REE, HFSE troughs and elevated Th, U; (2 lherzolitic or pyroxenitic with round TRE patterns and decreasing incompatible elements; (3 eclogitic with Eu troughs, Pb peak and high LILE content. Calculated parental melts for garnets with humped REE patterns suggest dissolution of former Cpx and depression means Cpx and garnets extraction. Clinopyroxenes from Ary-Mastakh fields show less inclined REE patterns with HMREE troughs and an increase of incompatible elements. Clinopyroxenes from Kuranakh field show flatter spoon-like REE patterns and peaks in Ba, U, Pb and Sr, similar to those in ophiolitic harzburgites. The PT diagrams for the mantle sections show high temperature gradients in the uppermost SCLM accompanied by an increase of P-Fe#Ol upward and slightly reduced thickness of the mantle keel of the Siberian craton, resulting from the influence of the Permian–Triassic superplume, but with no signs of delamination.

  17. Remagnetization in bituminous limestones of the Neoproterozoic Araras Group (Amazon craton): Hydrocarbon maturation, burial diagenesis, or both?

    Science.gov (United States)

    Font, E.; Trindade, R. I. F.; NéDéLec, A.

    2006-06-01

    Neoproterozoic carbonates of the Araras Group exhibit two distinct magnetic components across the same carbonate succession in a cross-section between the Amazon craton and the Paraguay fold belt. Pink dolostones of the Mirassol d'Oeste Formation carry a dual polarity, primary component, whereas black bituminous limestones of the Guia Formation yield a secondary postfolding component. Magnetic signatures of the Guia limestones, such as high anhysteretic remanence magnetization/saturation isothermal remanence magnetization ratios, high-frequency-dependent magnetic susceptibility and contradictory Lowrie-Fuller and Cisowski tests, are typical of remagnetized carbonates. Unblocking temperatures suggest that the stable high-temperature remanence is carried by both pyrrhotite and magnetite for which an authigenic origin is suggested by scanning electron microscope observations. The different magnetic properties noted between dolostones with or without bitumen and between dolostones and limestones in the same metamorphic conditions lead to the hypothesis that the amount of hydrocarbon as well as the lithology influence nucleation of authigenic magnetic minerals in these rocks. Presence of magnetite pseudoframboids and euhedral iron sulphide crystals occurring in fracture and voids are in favor of a chemical remanence (CRM). The presence of pyrrhotite as one of the main carriers of CRM in these rocks, and its association with bitumen in fractures is probably related to an epigenetic enrichment of sulfur due to hydrocarbon seepage. However, hydrocarbon maturation solely could not explain the differences of the magnetic mineralogy observed in the craton and the fold belt. Enhanced magnetite formation in the thrust and fold belt is interpreted to be the result of higher temperatures leading to stronger diagenesis of clay minerals.

  18. Registro do diagnóstico de enfermagem fadiga em prontuários de pacientes oncológicos Registro del diagnóstico de enfermería fatiga en fichas de pacientes oncológicos Health records of the nursing diagnosis fatigue in cancer patients

    Directory of Open Access Journals (Sweden)

    Maria Isabel Pinto Coelho Gorini

    2010-06-01

    Full Text Available OBJETIVO: Identificar o registro de diagnóstico de enfermagem (DE fadiga, as características definidoras e as intervenções de enfermagem em prontuários de pacientes oncológicos internados em hospital. MÉTODOS: Trata-se de um estudo transversal retrospectivo. A coleta de dados foi realizada em 107 prontuários de pacientes com diagnóstico médico de câncer, nos meses de agosto a dezembro de 2007. RESULTADOS: Foi encontrado um DE fadiga representando 0,9%, entretanto, foram encontradas, nas evoluções diárias registradas pelo enfermeiro, as características definidoras do DE fadiga em 15,9% dos prontuários. CONCLUSÃO: Apesar de identificar as características definidoras (sinais e sintomas, os enfermeiros não estabelecem o DE fadiga. Por esta razão, surgem dúvidas quanto à adequação das características definidoras deste diagnóstico Outros estudos sobre esta temática devem ser feitos para aprimorar a assistência de enfermagem ao paciente oncológico.OBJETIVO: Identificar el registro de diagnóstico de enfermería (DE fatiga, también las características definidoras y las intervenciones de enfermería, en fichas de pacientes oncológicos internados en el hospital. METODOS: Se trata de un estudio transversal retrospectivo. La recolección de datos fue realizada en 107 fichas de pacientes con diagnóstico médico de cáncer, en los meses de agosto a diciembre de 2007. RESULTADOS: Fue encontrado un DE de fatiga representando 0,9%, entretanto, fueron encontradas, en las evoluciones diarias registradas por el enfermero, las características definidoras del DE de fatiga en 15,9% de las fichas. CONCLUSIÓN: A pesar de identificar las características definidoras (señales y síntomas, los enfermeros no establecieron el DE de fatiga. Por esta razón, surgen dudas sobre la adecuación de las características definidoras de este diagnóstico Otros estudios sobre esta temática deben ser realizados para perfeccionar la asistencia de

  19. Etno-avaliação da humanização hospitalar pelo usuário do Sistema Único de Saúde (SUS e seus mediadores Etno-evaluación de la humanización hospitalaria por el usuario del sistema único de salud brasileño y sus mediadores Ethnic evaluation of hospital humanization by the users of the brazilian unified health system and their mediators

    Directory of Open Access Journals (Sweden)

    Annatália Meneses de Amorim Gomes

    2008-12-01

    Full Text Available A pesquisa teve por objetivo etno-avaliar a humanização da assistência hospitalar na percepção de usuários hospitalizados. Os dados foram coletados de janeiro a julho de 2005, em hospital público de Fortaleza-CE, por meio do percurso do paciente. Participaram 13 usuários hospitalizados. A análise foi realizada pela técnica de análise categorial, originando as categorias: etno-avaliação da estrutura e dinâmica hospitalar, da imagem hospitalar e da competência profissional humana e técnica. Os usuários utilizavam múltiplas facetas para suavizar suas opiniões, sendo desvelados fatores incluídos nessas facetas, denominados mediadores da etno-avaliação, e os categorizaram em: condições da entrevista, condição socioeconômica, personalidade e religiosidade do usuário, discurso irônico, diagnóstico sombrio e necessidades atendidas e experiência anterior de hospitalização. Elementos revelados pelos pacientes são significativos para mobilizar profissionais e gestores com vistas a mudanças que promovam a humanização e incluam o usuário como etno-avaliador crítico social.La investigación tuvo por objetivo etno-evaluar la humanización de la asistencia hospitalaria según la percepción de los usuarios hospitalizados. Los datos fueron recolectados de enero a julio del 2005, en un hospital público de Fortaleza-CE, a través de la opinión del paciente. Participaron 13 usuarios hospitalizados. El análisis fue realizado por análisis de categorías: etno-evaluación de la estructura y dinámica hospitalaria, la imagen hospitalaria y la competencia profesional humana y técnica. Los usuarios utilizaron varias formas para suavizar sus opiniones, siendo mostrados factores denominados de mediadores de la etno-evaluación catalogados como: condiciones de la entrevistas, condición socioeconómica, personalidad y religiosidad del usuario, narración irónica, diagnóstico sombrío y necesidades atendidas y experiencia

  20. A compreensão das vulnerabilidades sócio-econômicas no cenário da assistência de enfermagem pediátrica La comprensión del vulnerabilidad social y económica en el escenario de la asistencia de enfermería pediátrica Comprehension of social and economic vulnerability in the scenario of pediatrics nursing care

    Directory of Open Access Journals (Sweden)

    Maria de Lourdes Rodrigues Pedroso

    2010-06-01

    Full Text Available Fatores de vulnerabilidade que afetam o ambiente onde a criança e sua família estão inseridas podem ser traduzidos por condições inadequadas de vida e desenvolvimento. Este estudo objetiva compreender as percepções dos enfermeiros sobre as influências das vulnerabilidades de sócio-econômicas, no cuidado à criança e família, no ambiente de Unidades de Internação Pediátricas em um Hospital Universitário do Município de Porto Alegre, Rio Grande do Sul. Trata-se de uma pesquisa qualitativa na perspectiva de um estudo exploratório descritivo. A coleta de informações ocorreu com nove participantes por meio de entrevistas individuais semi-estruturadas, analisadas conforme referencial da Análise de Conteúdo. Emergiram três categorias de análise, sendo aqui explorada a compreensão do conceito de vulnerabilidade de origem sócio-econômica. Constatou-se que quando situações de vulnerabilidade são corretamente identificadas, o profissional enfermeiro possui condições de estabelecer ações que favoreçam o crescimento e desenvolvimento saudáveis da criança enferma e sua família,Factores de vulnerabilidad que afectan el ambiente donde el niño y su familia están inseridos pueden ser traducidos por condiciones inadecuadas de vida y desenvolvimiento. Este estudio tuvo el objetivo de comprender las percepciones de los enfermeros acerca de las influencias de las vulnerabilidades sociales y económicas en el cuidado al niño y a su familia en el ambiente de Unidades de Internación Pediátricas en un Hospital Universitario de la Municipalidad de Porto Alegre, Rio Grande do Sul, Brasil. Se trata de una pesquisa cualitativa bajo la perspectiva de un estudio exploratorio y descriptivo. La recolección de informaciones fue realizada con nueve participantes por medio de entrevistas individuales semi-estructuradas, analizadas según el referencial del Análisis de Contenido. Emergieron tres categorías de análisis, siendo aqu

  1. Massage application for occupational low back pain in nursing staff Aplicación del masaje para lumbalgia ocupacional en empleados de Enfermería Aplicação da massagem para lombalgia ocupacional em funcionários de Enfermagem

    Directory of Open Access Journals (Sweden)

    Talita Pavarini Borges

    2012-06-01

    Full Text Available This is a clinical trial which aims to evaluate the efficiency of massage in the reduction of occupational low back pain, and its influence on the performance of work and life activities for the nursing team. The sample consisted of 18 employees who received seven to eight sessions after their work period. From the Numerical Pain Rating Scale, significant improvements were found between the 3rd and 1st evaluations (p=0.000 and between the 3rd and 2nd (p=0.004, using the Wilcoxon test. Regarding the Oswestry Disability Index, the paired t test showed a statistical difference (p=0.02 between the baseline, with a mean of 21.33% and the second evaluation (18.78%, which was also seen between the second and third evaluation (16.67%. The score for the Handling and Transfer Risk Evaluation Scale was 18 points (medium risk. It is concluded that massage was effective in reducing occupational low back pain, and provided improvement in activities of work and life. Clinical Trials Identifier: NCT01315197.Se trata de ensayo clínico con el objetivo de verificar la eficiencia del masaje para apocar la lumbalgia ocupacional y su influencia en el desempeño de las actividades laborales y de vida, en el equipo de Enfermería. La muestra fue compuesta por 18 empleados, que recibieron de 7 a 8 sesiones después del plantón. Por la escala numérica de dolor, hubo mejora significante estadísticamente entre la 3ª y 1ª evaluación (p=0,000 y entre la 3ª y 2ª (p=0,004, por la prueba de Wilcoxon. Sobre la evaluación funcional de Owestry, en la prueba T pareado, se observó diferencia estadística (p=0,02 entre el primer momento, con media del 21,33% y el según (18,78%, y se mantuvo entre la segunda y tercera evaluación (16,67%. Fueron encontrados 18 puntos (medio riesgo para escala de evaluación del riesgo en el movimiento y transferencia. Se concluye que el masaje fue eficiente en la disminución de la lumbalgia ocupacional, así como trajo mejoría en las

  2. O alivio da dor de pacientes no pós-operatório na perspectiva de Enfermeiros de um centro de terapia intensiva El alivio del dolor en pacientes durante el post operatorio En la perspectiva de enfermeros de un Centro de tratamiento intensivo Postoperative patient's pain relief under perspective of Nurses of the intensive care unit

    Directory of Open Access Journals (Sweden)

    Vanessa da Silva Carvalho Vila

    2001-09-01

    Full Text Available O presente estudo teve como objetivo identificar como os enfermeiros aliviam a dor de pacientes durante o pós-operatório, no Centro de Terapia Intensiva de um hospital geral, de grande porte, localizado no município de São Paulo-SP Participaram 14 enfermeiros, com idade entre 20 e 40 anos, em que 78,6% eram do sexo feminino e 42,9% tinham de 1 a 5 anos de atuação profissional. Os dados foram coletados através de entrevista semi-estruturada, gravada e analisados qualitativamente, utilizando-se as etapas da análise de conteúdo, propostas por Bardin(1. Duas categorias principais foram evidenciadas: avaliação da dor e condutas tomadas para alívio da dor. Os resultados mostraram que os enfermeiros utilizam tanto a terapêutica medicamentosa como a complementar para o alívio da dor e consideram a sua avaliação como conduta inicial para estabelecer ações de prevenção e alívio deste desconforto.Este estudio tuvo como objetivo identificar cómo los enfermeros alivian el dolor de pacientes durante el post-operatorio, en el Centro de Tratamiento Intensivo de un hospital general de gran porte, ubicado en el municipio de São Paulo-SR Participaron 14 enfermeros, con edad entre 20 y 40 años, de los que un 78,6% eran del sexo femenino y un 42,9% tenían de 1 a 5 años de experiencia profesional. Los datos fueron colectados a través de entrevista semistructurada, grabada y analizada cualitativamente, utilizando las etapas del análisis de contenido, propuestas por Bardin (1 . Das categorias principales fueron evidenciadas: evaluación del dolor y conductas tomadas para aliviar el dolor. Los resultados muestran que los enfermeros utilizan tanto el tratamiento medicamentoso como el complementar para el alivio del dolor y consideran su evaluación como conducta para establecer acciones de preventión y alivio de este desconforto.The objective of the present study was to identify how nurses releave the post-operative patients pain in the

  3. Vulnerabilidade e sofrimento no trabalho do agente comunitário de saúde no Programa de Saúde da Família Vulnerabilidad y sufrimiento en el trabajo del agente comunitario de salud en el Programa Salud de la Familia Vulnerability and suffering in the work of a community health agent in the Family Health Program

    Directory of Open Access Journals (Sweden)

    Wânia Regina Veiga Martines

    2007-09-01

    Full Text Available A pesquisa, de natureza qualitativa, teve como núcleo de interesse investigativo as representações e as significações que um grupo de Agentes Comunitários de Saúde (ACSs possui acerca das vulnerabilidades para o sofrimento no trabalho a que estão expostos, assim como as próprias manifestações deste sofrimento ao desempenharem suas ações relativas ao Programa de Saúde da Família (PSF.A entrevista semi-estruturada com um grupo de ACSs, explorou o significado de ser ACS e a percepção da organização do trabalho; a análise foi embasada no referencial teórico-metodológico da hermenêutica e nas teorias relacionadas à psicodinâmica do trabalho. Os achados mostram a existência de uma importante vulnerabilidade ao sofrimento, gerada principalmente pela ideação idealizada da própria prática e pela escassa perspectiva de rearranjo dos ingredientes constitutivos da organização do trabalho, já que este profissional depende de fatores alheios ao seu espectro de alcance, que inclui as limitações do modelo assistencial proposto pelo PSF.La investigación, de naturaleza cualitativa, tuvo como centro de interés un grupo de Agentes Comunitarios de Salud (ACSs sobre las vulnerabilidades para el sufrimiento en el trabajo a que están expuestos, al desempeñar sus acciones profesionales en el Programa Salud de la Familia (PSF.La entrevista semi estructurada exploró el significado de ser ACS y la percepción de la organización del trabajo; el análisis fue efectuado con base al referencial teórico-metodológico de la hermenéutica y de las teorías relacionada