WorldWideScience

Sample records for arroyo verde eoceno

  1. El volcanismo del complejo Marifil en Arroyo Verde, vertiente suroriental del Macizo de Somún Cura, Chubut The volcanism of the Marifil Complex in Arroyo Verde, Southeastern slope of the Somun Cura Massif, Chubut

    Directory of Open Access Journals (Sweden)

    Marcelo J Márquez

    2010-05-01

    Full Text Available Se describen en este trabajo las facies volcánicas pertenecientes al Complejo Marifil que afloran en la localidad de Arroyo Verde, vertiente suroriental del macizo de Somún Cura, provincia del Chubut. Se discriminan facies de ignimbritas riolíticas, brechas piroclásticas, domos y domos vítreos traquíticos y diques riolíticos. Las relaciones de campo indican que las ignimbritas fueron el primer evento eruptivo que se alternaron con esporádicas coladas de bloques y cenizas. Luego se produjo la intrusión de las facies dómicas y por último la de los diques riolíticos. Las facies descriptas tienen composiciones que varían entre riolitas y traquitas con altos contenidos de K, característicos de las rocas pertenecientes a este complejo. Teniendo en cuenta las características observadas se propone un mecanismo fisural de erupción en esta localidad.Marifil Complex volcanic facies that crop out in the locality of Arroyo Verde, SE slope of Macizo de Somún Cura, are described here. Rhyolitic ignimbrite facies, pyroclastic breccias, traquitic domes and vitreous domes, and rhyolitic dikes are distinguished. Field relationships point out the ignimbrites as the first effusive event. Some sporadically block and ash flows are intercalated within the ignimbrites. These deposits were intruded by domes; the latest event is represented by the intrusion of the rhyolitic dykes. Chemical composition of these rocks varies between high K rhyolites and traquites, which correspond to typical characteristics of the Marifil Complex rocks. The observations allow proposing a fissural mechanism of eruption for these facies in this locality.

  2. El volcanismo del complejo Marifil en Arroyo Verde, vertiente suroriental del Macizo de Somún Cura, Chubut

    Directory of Open Access Journals (Sweden)

    Marcelo J Márquez

    2010-05-01

    Full Text Available Se describen en este trabajo las facies volcánicas pertenecientes al Complejo Marifil que afloran en la localidad de Arroyo Verde, vertiente suroriental del macizo de Somún Cura, provincia del Chubut. Se discriminan facies de ignimbritas riolíticas, brechas piroclásticas, domos y domos vítreos traquíticos y diques riolíticos. Las relaciones de campo indican que las ignimbritas fueron el primer evento eruptivo que se alternaron con esporádicas coladas de bloques y cenizas. Luego se produjo la intrusión de las facies dómicas y por último la de los diques riolíticos. Las facies descriptas tienen composiciones que varían entre riolitas y traquitas con altos contenidos de K, característicos de las rocas pertenecientes a este complejo. Teniendo en cuenta las características observadas se propone un mecanismo fisural de erupción en esta localidad.

  3. critical habitat designated for the arroyo toad

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — These data identify the areas (in general) of critical habitat designated for the arroyo toad. NOTE: THIS DATA SET INCLUDES APPROXIMATELY 900 ACRES OF LAND...

  4. Cape Verde

    Science.gov (United States)

    2007-01-01

    This Mars Exploration Rover Opportunity Pancam 'super resolution' mosaic of the approximately 6 m (20 foot) high cliff face of the Cape Verde promontory was taken by the rover from inside Victoria Crater, during the rover's descent into Duck Bay. Super-resolution is an imaging technique which utilizes information from multiple pictures of the same target in order to generate an image with a higher resolution than any of the individual images. Cape Verde is a geologically rich outcrop and is teaching scientists about how rocks at Victoria crater were modified since they were deposited long ago. This image complements super resolution mosaics obtained at Cape St. Mary and Cape St. Vincent and is consistent with the hypothesis that Victoria crater is located in the middle of what used to be an ancient sand dune field. Many rover team scientists are hoping to be able to eventually drive the rover closer to these layered rocks in the hopes of measuring their chemistry and mineralogy. This is a Mars Exploration Rover Opportunity Panoramic Camera image mosaic acquired on sols 1342 and 1356 (November 2 and 17, 2007), and was constructed from a mathematical combination of 64 different blue filter (480 nm) images.

  5. El Grupo Cabo Domingo, Tierra del Fuego: bioestratigrafía, paleoambientes y acontecimientos del Eoceno-Mioceno marino

    OpenAIRE

    N. Malumián; E.B. Olivero

    2006-01-01

    El Grupo Cabo Domingo, cuenca Austral, Eoceno superior a Mioceno medio, comprende una secuencia episódica de sedimentitas marinas levemente dislocadas y depositadas principalmente al norte de la falla de punta Gruesa en Tierra del Fuego. Se inicia con la profundización de la cuenca, resultado de los niveles de mar alto del Eoceno tardío amplificados por un diastrofismo generalizado (Fase Incaica). En el depocentro de la cuenca está representado por el miembro superior de la Formación Cerro Co...

  6. Los Crocodylia del Eoceno y Oligoceno de la Cuenca del Duero. Dientes y osteodermos

    OpenAIRE

    Jiménez Fuentes, Emiliano; Martín de Jesús, Santiago; Fincias San Martín, Benito; Prado, J. M. del; Mulas Alonso, Eugenia

    1987-01-01

    [ES]Los cocodrilos del Eoceno y Oligoceno de la Cuenca del Duero están representados, según se desprende del estudio de los dientes aislados, por tres géneros Asiatosochus Mook (exclusivo del Nivel "Salzones", Iberosuchus Antones (no presente en el Nivel "Molino de Pico")y Diplocynodom Pomel. Los osterodermos de tres tipos muy distintos, al presentar una distribución similiar, permiten una correlación anatómica con los tres géneros. Se ha realizado un estudio estadístico de los dientes y crán...

  7. de la cuenca del arroyo Guachinango

    Directory of Open Access Journals (Sweden)

    Geisy Hernández C.

    2007-01-01

    Full Text Available Se realizó el estudio del arroyo Guachinango, afluente del río Luyanó, en el tramo acotado desde el nacimiento del mismo hasta el puente de hierro peatonal ubicado en las afueras del reparto Dolores (Dolores y Final, municipio San Miguel del Padrón. Se valoró la posible utilización de las aguas del arroyo con fines de regadío, para lo cual se ejecutó el estudio hidrológico y levantamiento de las fuentes contaminantes. El estudio hidrológico arrojó que la cuenca donde se trabajó tiene una extensión de 424,57 ha (4,25 km2 de estas 276,36 ha pueden emplearse en la agricultura. El levantamiento mostró que la mayor carga contaminante procede de los residuales domésticos, al ser estos los que mayor volumen vierten al arroyo. El 50 % del área agrícola de la cuenca puede ser regada con las aguas del arroyo siempre que se le de a las mismas el tratamiento que requieran en cada caso

  8. Chemistry of the Arroyo Marincho complex and Granodiorita of the Arroyo Grande. Part II. (Uruguay)

    International Nuclear Information System (INIS)

    Mineralogical and chemical studies as well as thermodynamic conditions evaluation are able to localize several stabilized curves of the ferromagnese minerals in the Marincho complex ands the Arroyo Grande. The geochemical and thermodynamic characteristics has allowed to drive different evolutive models.

  9. Tiburones y Rayas de la Formación Tonosí (Eoceno de Panamá

    Directory of Open Access Journals (Sweden)

    Sara Vasquez

    2014-12-01

    Full Text Available En el presente estudio identificamos y describimos restos fósiles de tiburones y rayas de la Formación Tonosí, del Eoceno de Panamá. Este trabajo incluye el primer reporte de Odontaspis sp. y †Cretolamna appendiculata para el país, y registros adicionales de Carcharnifomes y Aetobatus sp. Éstos hallazgos representan el reporte de condrictios más antiguo de Panamá, aportando así al conocimiento de la fauna marina que existió en la región antes del surgimiento del Istmo de Panamá.

  10. Panorama from 'Cape Verde'

    Science.gov (United States)

    2007-01-01

    NASA's Mars Exploration Rover Opportunity captured this vista of 'Victoria Crater' from the viewpoint of 'Cape Verde,' one of the promontories that are part of the scalloped rim of the crater. Opportunity drove onto Cape Verde shortly after arriving at the rim of Victoria in September 2006. The view combines hundreds of exposures taken by the rover's panoramic camera (Pancam). The camera began taking the component images during Opportunity's 970th Martian day, or sol, on Mars (Oct. 16, 2006). Work on the panorama continued through the solar conjunction period, when Mars was nearly behind the sun from Earth's perspective and communications were minimized. Acquisition of images for this panorama was completed on Opportunity's 991st sol (Nov. 7, 2006). The top of Cape Verde is in the immediate foreground at the center of the image. To the left and right are two of the more gradually sloped bays that alternate with the cliff-faced capes or promontories around the rim of the crater. 'Duck Bay,' where Opportunity first reached the rim, is to the right. Beyond Duck Bay counterclockwise around the rim, the next promontory is 'Cabo Frio,' about 150 meters (500 feet) from the rover. On the left side of the panorama is 'Cape St. Mary,' the next promontory clockwise from Cape Verde and about 40 meters (130 feet) from the rover. The vantage point atop Cape Verde offered a good view of the rock layers in the cliff face of Cape St. Mary, which is about 15 meters or 50 feet tall. By about two weeks after the Pancam finished collecting the images for this panorama, Opportunity had driven to Cape St. Mary and was photographing Cape Verde's rock layers. The far side of the crater lies about 800 meters (half a mile) away, toward the southeast. This approximately true-color view combines images taken through three of the Pancam's filters, admitting light with wavelengths centered at 750 nanometers (near infrared), 530 nanometers (green) and 430 nanometers (violet).

  11. Cape Verde Frontal Zone

    OpenAIRE

    Zenk, Walter; Klein, Birgit; Schröder, Michael

    1991-01-01

    The term Cape Verde Frontal Zone is introduced to characterize the southeastern corner of the subtropical gyre circulation in the North Atlantic Ocean far west of the upwelling area off the Mauretanean shelf. Two water mass fronts, one overlying the other, are identified with a quasi-synoptic set of CTD-OZ and nutrient data from November 1986. In the warm water sphere we encounter North and South Atlantic Central Water (NACWISACW) superimposed on extensions of Mediterranean outflow and Antarc...

  12. Chronostratigraphy of Kitchen Corral Wash, southern UT: Insights into Arroyo Aggradation and Entrenchment Events

    Science.gov (United States)

    Huff, W.; Rittenour, T. M.

    2012-12-01

    Fluvial systems in the semiarid southwestern United States are sensitive to Holocene climate change, as partly evidenced by entrenched, steep-walled arroyo channels throughout the region. Kitchen Corral Wash (KCW), a tributary of the Paria River in southern Utah, has experienced both historic and prehistoric (Holocene) episodes of arroyo cutting and filling. During the most recent arroyo-cutting event (~1880-1920 AD), KCW and other regional drainages were entrenched up to 30m into their fine-grained alluvial fill, leaving former floodplains perched above new channel bottoms. Alluvial sediments preserved within the exposed arroyos walls record largely aggradational sequences interrupted by periods of incision. Although arroyo entrenchment and aggradation processes have been studied for over a century, exact causes of arroyo cutting are still not fully understood. Hereford (2002) argued that arroyo dynamics are climatically driven based on near-synchronous timing of entrenchment in drainages from southern Utah and the surrounding region. However, recent results from KCW and nearby drainages suggest a more complex pattern. While previous studies have attempted to constrain the timing of arroyo cut-fill events in KCW, poor age control has limited results. In order to better understand the timing of arroyo events, this study aims to update and improve the arroyo cut-fill chronology from KCW by using detailed alluvial stratigraphic descriptions and age control from optically stimulated luminescence (OSL) and AMS radiocarbon dating. Preliminary results are based on twelve study sites, each exposing a number of cut-fill cycles in the arroyo-wall stratigraphy, and suggest at least four arroyo cycles over the last 4 ka. Forthcoming AMS and OSL results will be used to test hypotheses related to climatic forcing of arroyo dynamics by comparing the chronology from KCW to regional chronologies.

  13. El Grupo Cabo Domingo, Tierra del Fuego: bioestratigrafía, paleoambientes y acontecimientos del Eoceno-Mioceno marino

    Directory of Open Access Journals (Sweden)

    N. Malumián

    2006-06-01

    Full Text Available El Grupo Cabo Domingo, cuenca Austral, Eoceno superior a Mioceno medio, comprende una secuencia episódica de sedimentitas marinas levemente dislocadas y depositadas principalmente al norte de la falla de punta Gruesa en Tierra del Fuego. Se inicia con la profundización de la cuenca, resultado de los niveles de mar alto del Eoceno tardío amplificados por un diastrofismo generalizado (Fase Incaica. En el depocentro de la cuenca está representado por el miembro superior de la Formación Cerro Colorado (140 m, fangolitas y areniscas, con el último registro de Globigerinatheka index, y las apariciones de Praetenuitella insolita e Isthmolithus recurvus, 36-34 Ma; y fuera del depocentro, por el conglomerado Tchat-Chii (70 m, Eoceno cuspidal-Oligoceno basal, y el glauconítico A en el subsuelo en el norte de la Isla. El mínimo contenido de esmectita y la abundancia de niveles con Chiloguembelina reflejan tectonismo activo y caída de temperatura durante la depositación del miembro superior y el glauconítico A. Continúan las capas de la Estancia María Cristina (>75 m, arcillitas y areniscas, Oligoceno temprano, 34-30 Ma y del puesto Herminita (200 m, arcillitas, Oligoceno, 30-26,5 Ma, principalmente con microfaunas residuales de foraminíferos aglutinados depositadas por debajo de la línea de compensación de la calcita, corresponden a la máxima profundización de la cuenca que habilitó el ingreso de aguas antárticas corrosivas. Seguidas por la Formación Desdémona (250 m, fangolitas tobáceas, bioturbadas, depositadas en las proximidades de la lisoclina, con asociaciones de foraminíferos de aguas abisales, que representa los niveles altos de mar del Oligoceno cuspidal-Mioceno temprano. Seguidas por las capas del Cabo Ladrillero (80 m, areniscas glauconíticas basales y fangolitas con asociaciones de foraminíferos de plataforma externa, y 75 m de fangolitas carbonosas, areniscas finas y arcillitas, Mioceno inferior, con la asociaci

  14. Corrective measures evaluation report for Tijeras Arroyo groundwater.

    Energy Technology Data Exchange (ETDEWEB)

    Witt, Johnathan L (North Wind, Inc., Idaho Falls, ID); Orr, Brennon R. (North Wind, Inc., Idaho Falls, ID); Dettmers, Dana L. (North Wind, Inc., Idaho Falls, ID); Hall, Kevin A. (North Wind, Inc., Idaho Falls, ID); Howard, M. Hope (North Wind, Inc., Idaho Falls, ID)

    2005-08-01

    This Corrective Measures Evaluation report was prepared as directed by a Compliance Order on Consent issued by the New Mexico Environment Department to document the process of selecting the preferred remedial alternative for Tijeras Arroyo Groundwater. Supporting information includes background concerning the site conditions and potential receptors and an overview of work performed during the Corrective Measures Evaluation. The evaluation of remedial alternatives included identifying and describing four remedial alternatives, an overview of the evaluation criteria and approach, comparing remedial alternatives to the criteria, and selecting the preferred remedial alternative. As a result of the Corrective Measures Evaluation, monitored natural attenuation of the contaminants of concern (trichloroethene and nitrate) is the preferred remedial alternative for implementation as the corrective measure for Tijeras Arroyo Groundwater. Design criteria to meet cleanup goals and objectives and the corrective measures implementation schedule for the preferred remedial alternative are also presented.

  15. Infiltration and quality of water for two arroyo channels, Albuquerque, New Mexico, 1988-92

    Science.gov (United States)

    Thomas, Carole L.

    1995-01-01

    Selected reaches of Grant Line Arroyo and Tijeras Arroyo in Albuquerque, New Mexico, were studied to collect information about the amount and quality of infiltration through arroyo channels. Infiltration rate was calculated for selected reaches of Grant Line Arroyo and Tijeras Arroyo based on instantaneous streamflow-loss volumes, wetted channel area, and instantaneous evaporation rates measured during 1988-92. Infiltration rates at Grant Line Arroyo ranged from 0.0 to 0.6 foot per day, and at Tijeras Arroyo from 2.28 to 30 feet per day. The evaporation rate ranged from one-tenth of 1 percent to 2 percent of the infiltration rate. Infiltration rates differed with the location of the reach isolated for measurement and with the time of day of the infiltration-rate measurement. Differences in intrinsic permeability of the sediments may be the most important factor affecting spatial variations in infiltration. The most important factor affecting temporal variations in infiltration may be the temperature of the water and sediment where infiltration occurs. Annual evaporation rates were greatest over saturated stream sediments and ranged from 802 to 1,025 millimeters per year or from 31.57 to 40.35 inches per year. Annual evaporation rates were least over unsaturated, unvegetated soil and ranged from 174 to 291 millimeters per year or from 6.85 to 11.46 inches per year. Annual evapotranspiration rates over grasses or shrubs or both were about one-half the rates over saturated stream sediments. Rates were similar for Grant Line and Tijeras Arroyos. The land- surface vegetation, availability of water at the land surface, availability of energy to enable a change of state from water to vapor, existence of a vapor concentration gradient, and a turbulent atmosphere to carry the vapor away may be the factors that determine the amount of evaporation and evapotranspiration. Water in Grant Line Arroyo and Tijeras Arroyo met U. S. Environmental Protection Agency drinking

  16. Monitoring of the land and geological environment condition in the Eupatorijska arroyo in Dnipropetrovsk

    Directory of Open Access Journals (Sweden)

    Bogachenko L.D.

    2015-09-01

    Full Text Available The article analyzes the condition of the land and the geological environment in the Eupatorijska arroyo, engineering-geological estimation of the territory of the arroyo is carried out, negative engineering-geological processes and phenomena are defined. It was found that due to the negative technogenic impact in conjunction with natural and climatic factors, the slopes under study can be considered as those under the risk of landslides and therefore are in need of engineering protection.

  17. Cardiovascular Surgery Residency Program: Training Coronary Anastomosis Using the Arroyo Simulator and UNIFESP Models

    OpenAIRE

    Miguel Angel Maluf; Walter José Gomes; Ademir Massarico Bras; Thiago Cavalcante Vila Nova de Araújo; André Lupp Mota; Caio Cesar Cardoso; Rafael Viana dos S. Coutinho

    2015-01-01

    ABSTRACT OBJECTIVE: Engage the UNIFESP Cardiovascular Surgery residents in coronary anastomosis, assess their skills and certify results, using the Arroyo Anastomosis Simulator and UNIFESP surgical models. METHODS: First to 6th year residents attended a weekly program of technical training in coronary anastomosis, using 4 simulation models: 1. Arroyo simulator; 2. Dummy with a plastic heart; 3. Dummy with a bovine heart; and 4. Dummy with a beating pig heart. The assessment test was compr...

  18. Puntualización acerca de las relaciones entre el Eoceno marino de Montcalb-La Corriu el de Sant Llorenç de Morunys y los conglomerados continentales encajantes (Pirineo Catalán

    Directory of Open Access Journals (Sweden)

    Masriera, A.

    1985-12-01

    Full Text Available The new and evident field observations about the middle marine Eocene of Montcalb-La Corriu (South bórder of the Pedraforca zone, catalán Pyrenees allows us to judge the opinions of some authors, to fix your chronological position in relation to the incases continental conglomeratic formations ,and to find out that this marine Eocene consist in two outsize (kilometric order slide blocks placed by tectonic and synsedimentary processes during the first phase of the pyrenean molassic sedimentation of the upper Eocene, The relationship of the marine Eocene of Sant Llorenç de Morunys with their limitting continental series at N and S, remain corroborated in accordance with the classic ideas of the authors.

    Nuevas y evidentes observaciones de campo relativas al Eoceno medio marino de Montcalb-La Corriu (borde sur de la zona del Pedraforca, Pirineo catalán, permiten enjuiciar las opiniones de algunos autores y fijar su posición cronológica respecto a las formaciones con, glomeráticas continentales encajantes, llegándose a la conclusión de que dicho Eoceno constituye dos escamas de superficie kilométrica colocadas tectónica y sinsedimentariamente durante la primera fase de la sedimentación molásica pirenaica del Eoceno superior. Las relaciones del Eoceno marino de Sant Llorenc de Morunys con las series continentales que lo enmarcan al norte y al sur quedan puntualizadas de acuerdo con las ideas clásicas de los autores.

  19. Portal do Conhecimento de Cabo Verde

    OpenAIRE

    Carvalho, José; Rodrigues, Eloy; Príncipe, Pedro; Corsino, Paulo

    2014-01-01

    Poster apresentado na "5ª Conferência Luso-Brasileira sobre Acesso Aberto", Coimbra, Portugal, 06 - 08 de outubro de 2014. O Portal do Conhecimento de Cabo Verde é uma iniciativa do Ministério do Ensino Superior, Ciência e Inovação de Cabo Verde, que em conjunto com o NOSI – Núcleo Operacional para a Sociedade da Informação e a Universidade do Minho, desenvolveram um ponto único de pesquisa da produção científica de Cabo Verde e a disponibilização de uma biblioteca digital. Este serviç...

  20. Cape Verde in False Color

    Science.gov (United States)

    2007-01-01

    A promontory nicknamed 'Cape Verde' can be seen jutting out from the walls of Victoria Crater in this false-color picture taken by the panoramic camera on NASA's Mars Exploration Rover Opportunity. The rover took this picture on martian day, or sol, 1329 (Oct. 20, 2007), more than a month after it began descending down the crater walls -- and just 9 sols shy of its second Martian birthday on sol 1338 (Oct. 29, 2007). Opportunity landed on the Red Planet on Jan. 25, 2004. That's nearly four years ago on Earth, but only two on Mars because Mars takes longer to travel around the sun than Earth. One Martian year equals 687 Earth days. This view was taken using three panoramic-camera filters, admitting light with wavelengths centered at 750 nanometers (near infrared), 530 nanometers (green) and 430 nanometers (violet).

  1. Burrowing Owl - Palo Verde Valley [ds197

    Data.gov (United States)

    California Department of Resources — These burrowing owl observations were collected during the spring and early summer of 1976 in the Palo Verde Valley, eastern Riverside County, California. This is...

  2. Características sedimentológicas de la terminación del ciclo marino del Eoceno superior en el sector oriental de la Depresión del Ebro (Catalunya, N.E. de Espaiia)

    OpenAIRE

    Barnolas, Antonio; Busquets, Pere (Busquets i Buezo); Serra-Kiel, Josep

    1981-01-01

    Durante el 'Biarritziense' superior y el Priaboniense, la sedimentación en el Eoceno autóctono de Catalunya, adquiere caracteres deltaicos acumulándose los sedimentos en forma de lóbulos deltaicos que translapan sucesivamente y progradan hacia el interior de la cuenca. Cuando los canales distributarios que originan a estos lóbulos son abandonados, se produce un retrabajamiento de sus materiales por la acción marina (oleaje y posiblemente mareas). Es en este episodio cuando, sobre la morfologi...

  3. Formación Laguna Tordillo: Volcanismo dacítico eoceno en el Macizo del Deseado, provincia de Santa Cruz

    Directory of Open Access Journals (Sweden)

    D. Guido

    2004-12-01

    Full Text Available Se determinó una nueva entidad formacional para la provincia geológica Macizo del Deseado. Se trata de rocas volcánicas melanocráticas que se presentan como dos afloramientos en inmediaciones de la laguna Tordillo, en el sector oriental del macizo del Deseado. Son lavas de color negro a rojizo, de textura porfírica con fenocristales de labradoritas (An55-57 inmersos en una pasta de textura hialocristalina, de tipo hialofítica. Además, poseen xenolitos de roca volcánica de textura glomeroporfírica con fenocristales de labradoritas (An56-59 y enstatitas (En56-Fs40-Wo4, con rebordes de reacción pigeoníticos (En44-Fs47-Wo9. Los análisis de elementos mayoritarios y traza las definen como lavas dacíticas, de tipo subalcalino y con afinidad calcoalcalina. Las relaciones estratigráficas evidencian una edad post-Jurásico superior, la cual fue confirmada mediante un fechado radimétrico K/Ar en roca total (fracción vidrio, que resultó en 40,8 ± 2,4 Ma (Eoceno. Teniendo en cuenta el marco paleogeográfico y geotectónico paleógeno para la Patagonia, se propone que estas rocas se generaron como consecuencia de un subplacado básico de magmas, posiblemente vinculados con el Basalto Cerro del Doce o unidades paleógenas correlacionables. Sin embargo, no se descarta una vinculación entre las rocas de la Formación Laguna Tordillo y las piroclastitas de la Formación o Grupo Sarmiento.

  4. Talento verde y cadenas de suministro verdes: ¿existe una relación significativa?

    Directory of Open Access Journals (Sweden)

    María del Carmen Torres-Salazar

    2016-01-01

    Full Text Available Introducción: En este texto se presentan resultados estadísticos de la relación entre directivos con características de talento verde y la implementación de prácticas de cadena de suministro verde. Debido a que existen investigaciones sobre la importancia de la visión de la alta dirección para la adopción de prácticas verdes; y sin embargo ninguna da cuenta de las características personales del directivo, ni tampoco de la relación significativa entre estas características y la puesta en marcha de prácticas de cadena de suministro verde, esta es la aportación de la presente investigación. El trabajo se desarrolló en empresas manufactureras con más de diez trabajadores de la zona oriente del estado de Morelos México. La caracterización del término talento verde se reportó en el artículo, Talento verde: caracterización y búsqueda, publicado en el número 14 de esta revista. Método: El método utilizado consistió en la construcción de una encuesta dividida en tres categorías que posteriormente se convirtieron en variables: prácticas de cadena de suministro verde, presiones institucionales y talento verde. Las dos primeras se adaptaron de la encuesta de Zhu y Sarkis (2007 y la tercera surgió de la representación social de talento verde, producto de una fase de esta investigación. La encuesta se validó con un grupo de empresarios miembros de la Cámara Nacional de la Industria de la Transformación (CANACINTRA capítulo Morelos. El instrumento validado se aplicó a 26 directivos de empresas manufactureras con más de diez trabajadores de la zona oriente de Morelos, con el fin de probar la relación entre directivos con características de talento verde y la puesta en marcha de prácticas de cadena de suministro verde. Para ello se utilizaron como herramientas estadísticas la correlación de Pearson y la regresión lineal múltiple. Resultados: Las prácticas de cadena de suministro verde de las empresas

  5. Evaluation of Arroyo Channel Restoration Efforts using Hydrological Modeling: Rancho San Bernardino, Sonora, MX

    Science.gov (United States)

    Jemison, N. E.; DeLong, S.; Henderson, W. M.; Adams, J.

    2012-12-01

    In the drylands of the southwestern U.S. and northwestern Mexico, historical river channel incision (arroyo cutting) has led to the destruction of riparian ecological systems and cieñega wetlands in many locations. Along Silver Creek on the Arizona-Sonora border, the Cuenca Los Ojos Foundation has been installing rock gabions and concrete and earthen berms with a goal of slowing flash floods, raising groundwater levels, and refilling arroyo channels with sediment in an area that changed from a broad, perennially wet cieñega to a narrow sand- and gravel-dominated arroyo channel with an average depth of ~6 m. The engineering efforts hope to restore desert wetlands, regrow riparian vegetation, and promote sediment deposition along the arroyo floor. Hydrological modeling allows us to predict how rare flood events interact with the restoration efforts and may guide future approaches to dryland ecological restoration. This modeling is complemented by detailed topographic surveying and use of streamflow sensors to monitor hydrological processes in the restoration project. We evaluate the inundation associated with model 10-, 50-, 100-, 500-, and 1,000-year floods through the study area using FLO-2D and HEC-RAS modeling environments in order to evaluate the possibility of returning surface inundation to the former cieñega surface. According to HEC-RAS model predictions, given current channel configuration, it would require a 500-year flood to overtop the channel banks and reinundate the cieñega (now terrace) surface, though the 100-year flood may lead to limited terrace surface inundation. Based on our models, 10-year floods were ~2 m from overtopping the arroyo walls, 50-year floods came ~1.5 m from overtopping the arroyos, 100-year floods were ~1.2 m from overtopping, and 500- and 1,000-year floods at least partially inundated the cieñega surface. The current topography of Silver Creek does not allow for frequent flooding of the former cieñega; model predictions

  6. Armadillo : tranchée creusée par l'arroyo Campanero

    OpenAIRE

    Michelet, Dominique

    1981-01-01

    Près d'Armadillo, municipio Armadillo, San Luis Potosi.Depuis la "piste" ouverte récemment (sur l'initiative du curé d'Armadillo) et qui relie Armadillo : San Nicolas Tolentino, vue générale en direction de l'Ouest. Au premier plan, on aperçoit la tranchée creusée par l'arroyo Campanero

  7. Primera cita de cocodrilos zifodontos en el Cenozoico de Asturias: Royo Gómez y los supuestos dientes de dinosaurio del Eoceno de Llamaquique

    Directory of Open Access Journals (Sweden)

    Pereda Suberbiola, X.

    2012-12-01

    Full Text Available In 1928, José Royo Gómez mentioned the find of “two teeth similar to those of theropod dinosaurs from the Secondary” in the Eocene of Llamaquique (Oviedo Basin, Asturias. Royo Gómez was aware of the interest of the discovery, “because they would be the youngest remains found of these gigantic reptiles”. According to the hitherto unpublished documents preserved in the Archives of the Museo Nacional de Ciencias Naturales in Madrid, Royo Gómez photographed five teeth from Llamaquique in April 1932, which he regarded as belonging to theropods. The whereabouts of this material is currently unknown. However, the revision of the Llamaquique collection in the above mentioned museum has allowed to recover one labiolingually compressed and serrated tooth (ziphodont condition. We reject here that the tooth belongs to a theropod, and we assign it to a Mesoeucrocodylia indet. This is the first mention of the discovery of ziphodont crocodyliforms in the Paleogene of Asturias.

    En 1928, José Royo Gómez informó del hallazgo de “dos dientes idénticos a los de los Dinosaurios terópodos del Secundario” en el Eoceno de Llamaquique (Cuenca de Oviedo, Asturias. Royo Gómez era consciente del interés de este descubrimiento, “pues serían los restos más modernos que se conocerían de estos gigantescos reptiles”. Según la documentación conservada en el Archivo del Museo Nacional de Ciencias Naturales en Madrid, hasta ahora inédita, Royo Gómez fotografió en abril de 1932 cinco dientes de Llamaquique que él consideraba pertenecientes a terópodos. Este material se encuentra actualmente en paradero desconocido. No obstante, la revisión de la colección paleontológica de Llamaquique en el mencionado museo ha permitido recuperar un diente comprimido lateralmente y provisto de carenas denticuladas (condición zifodonta. Se descarta que el diente pertenezca a un terópodo, asignándose a un Mesoeucrocodylia indeterminado. Se trata de la

  8. Educar para a diversidade : Cabo Verde

    OpenAIRE

    Ramos, Natália; Ferreira, Lígia Évora

    1997-01-01

    Recursos Educativos - Humanidades O videograma pretende dar a visão geral dos aspetos geográficos, sociodemográficos e culturais de Cabo Verde e da situação dos cabo-verdianos em Portugal. Produção do Centro de Estudos das Migrações e das Relações Interculturais, Universidade Aberta.

  9. Verde pentru biciclete (Green for Bycicles

    Directory of Open Access Journals (Sweden)

    Romina Faur

    2011-06-01

    Full Text Available The campaign “Verde pentru biciclete” (Engl. “Green for bicycles” is the first official initiative from Timişoara that encourages adopting cycling as an ecological and economical alternative to urban transportation; this addresses the citizens of Timişoara and not only, regardless of age. “Verde pentru biciclete” is a pedalling movement supported by the Bega Foundation, in collaboration with the Gratzu Sportive Club, KissFM, Ziua de Vest, Agenda and agenda.ro. The debut of the campaign took place of October 25th 2008, with the first “Verde pentru biciclete” event – “The bicycles Counting”. All the events that followed were held to draw attention on the importance of cycling, together with obtaining of certain facilities, necessary for the cyclists’ safe movement in traffic. Moreover, a number of communication platforms have been created between the fans of cycling; thus, the website www.pedaleaza.ro has been created, through which those interested can inform themselves or communicate on the forum and discussions group verde_pentru_biciclete@yahoogroups.com o through the social network Facebook (facebook.com/ verdepentrubiciclete. This paper presents the activities held within the campaign since its beginning until today, as well as our future plans.

  10. Safety enhancement solutions Laguna Verde NPP

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2012-10-15

    After the event happened in the nuclear power plant of Fukushima (Japan) proposals are carried out to improve the safety systems in the nuclear power plant of Laguna Verde (Mexico), from the application of the recommendations of the US NRC, until the considerations for the renovation of the operation license. (Author)

  11. Final Report for the Arroyo Las Positas Maintenance Impact Study, Lawrence Livermore National Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    van Hattem, M; Paterson, L

    2006-01-12

    In 2000, the Lawrence Livermore National Laboratory's (LLNL) Environmental Protection Department, in coordination with Plant Engineering (PE), began dredging sections of the Arroyo Las Positas (ALP) to alleviate concerns about flooding of sensitive facilities within the mainsite of Lawrence Livermore National Laboratory. In order to reduce potential impacts on the federally threatened California red-legged frog (Rana aurora draytonii), LLNL proposed to dredge sections of the ALP in a ''checkerboard pattern'', resulting in a mosaic of open water habitat and vegetated sections (Figure 1). The Arroyo Las Positas Management Plan (Plan) was coordinated with both state and federal agencies including the U.S. Fish and Wildlife Service (USFWS), California Department of Fish and Game (CDF&G), San Francisco Regional Water Quality Control Board (SFRWQCB), and the Army Corp of Engineers (ACOE). Water Discharge Requirements (WDRs) were issued for this project on December 30, 1999 (Order No. 99-086) by the SFRWQCB. Provision 19 of the WDRs outlined a five-year (2000 through 2004) Maintenance Impact Study (MIS) that LLNL began in coordination with dredging work that was conducted as part of the Arroyo Las Positas Management Plan. Provision 20 of these WDRs requires LLNL to submit a final report of the results of the Maintenance Impact Study for this project to the SFRWQCB. The purpose of this report is to present the results of the Maintenance Impact Study for Arroyo Las Positas and meet the requirements of Provision 20. A description of the annual monitoring included in this Maintenance Impact Study is included in the methods section of this report. Initially the Plan called for dredging the entire length of the Arroyo Las Positas (approximately 6,981 linear feet) over a 5-year period to minimize temporal impacts on the California red-legged frog. Dredging occurred in 2000 ({approx}1,300 ft.), 2001 ({approx}800 ft.), and 2002 ({approx}1,200 ft.), which

  12. Streamflow, Infiltration, and Ground-Water Recharge at Abo Arroyo, New Mexico

    Science.gov (United States)

    Stewart-Deaker, Amy E.; Stonestrom, David A.; Moore, Stephanie J.

    2007-01-01

    Abo Arroyo, an ephemeral tributary to the Rio Grande, rises in the largest upland catchment on the eastern side of the Middle Rio Grande Basin (MRGB). The 30-kilometer reach of channel between the mountain front and its confluence with the Rio Grande is incised into basin-fill sediments and separated from the regional water table by an unsaturated zone that reaches 120 meters thick. The MRGB portion of the arroyo is dry except for brief flows generated by runoff from the upland catchment. Though brief, ephemeral flows provide a substantial fraction of ground-water recharge in the southeastern portion of the MRGB. Previous estimates of average annual recharge from Abo Arroyo range from 1.3 to 21 million cubic meters. The current study examined the timing, location, and amount of channel infiltration using streamflow data and environmental tracers during a four-year period (water years 1997?2000). A streamflow-gaging station (?gage?) was installed in a bedrock-controlled reach near the catchment outlet to provide high-frequency data on runoff entering the basin. Streamflow at the gage, an approximate bound on potential tributary recharge to the basin, ranged from 0.8 to 15 million cubic meters per year. Storm-generated runoff produced about 98 percent of the flow in the wettest year and 80 percent of the flow in the driest year. Nearly all flows that enter the MRGB arise from monsoonal storms in July through October. A newly developed streambed temperature method indicated the presence and duration of ephemeral flows downstream of the gage. During the monsoon season, abrupt downward shifts in streambed temperatures and suppressed diurnal ranges provided generally clear indications of flow. Streambed temperatures during winter showed that snowmelt is also effective in generating channel infiltration. Controlled infiltration experiments in dry arroyo sediments indicated that most ephemeral flow is lost to seepage before reaching the Rio Grande. Streambed temperature

  13. Panorama from 'Cape Verde' (False Color)

    Science.gov (United States)

    2007-01-01

    NASA's Mars Exploration Rover Opportunity captured this vista of 'Victoria Crater' from the viewpoint of 'Cape Verde,' one of the promontories that are part of the scalloped rim of the crater. Opportunity drove onto Cape Verde shortly after arriving at the rim of Victoria in September 2006. The view combines hundreds of exposures taken by the rover's panoramic camera (Pancam). The camera began taking the component images during Opportunity's 970th Martian day, or sol, on Mars (Oct. 16, 2006). Work on the panorama continued through the solar conjunction period, when Mars was nearly behind the sun from Earth's perspective and communications were minimized. Acquisition of images for this panorama was completed on Opportunity's 991st sol (Nov. 7, 2006). The top of Cape Verde is in the immediate foreground at the center of the image. To the left and right are two of the more gradually sloped bays that alternate with the cliff-faced capes or promontories around the rim of the crater. 'Duck Bay,' where Opportunity first reached the rim, is to the right. Beyond Duck Bay counterclockwise around the rim, the next promontory is 'Cabo Frio,' about 150 meters (500 feet) from the rover. On the left side of the panorama is 'Cape St. Mary,' the next promontory clockwise from Cape Verde and about 40 meters (130 feet) from the rover. The vantage point atop Cape Verde offered a good view of the rock layers in the cliff face of Cape St. Mary, which is about 15 meters or 50 feet tall. By about two weeks after the Pancam finished collecting the images for this panorama, Opportunity had driven to Cape St. Mary and was photographing Cape Verde's rock layers. The far side of the crater lies about 800 meters (half a mile) away, toward the southeast. This view combines images taken through three of the Pancam's filters, admitting light with wavelengths centered at 750 nanometers (near infrared), 530 nanometers (green) and 430 nanometers (violet). It is presented in false color to emphasize

  14. First fuel reload in Laguna Verde

    International Nuclear Information System (INIS)

    A report containing the activities carried out during the first reload of nuclear fuel and major maintenance in the Laguna Verde nuclear reactor is presented. The previous and the specific activities are included. These last are related without including the technical considerations, data or the operation details, because these data were documented inside the registrations of the CFE, the ININ and in personal way. (Author)

  15. Petrografía y geoquímica del magmatIsmo cretácico superior-eoceno en el área de PichaIhue, provincia de Neuquén

    Directory of Open Access Journals (Sweden)

    M. Paula Mateo Fernández Caso

    2011-06-01

    Full Text Available Hacia fines del Mesozoico, en el sector noroeste de la provincia de Neuquén se desarrolló un magmatismo asociado a la evolución y migración del arco andino desde los 36º40' hasta los 38º20' de latitud sur. En base a estudios petrológicos, se caracterizaron facies hipabisales y extrusivas que afloran en el área de Pichaihue. Las primeras están compuestas por andesitas que se emplazan como lacolitos, diques o filones capa intruyendo las secuencias sedimentarias mesozoicas. También se reconocen afloramientos de basaltos. Las facies extrusivas están constituidas principalmente por coladas brechosas, coladas masivas y pequeños domos. La geoquímica evidencia una impronta calcoalcalina, de arco volcánico, con una corteza de espesor normal y patrones de elementos traza que sugieren una misma fuente. Dentro del marco regional, se pueden distinguir tres grupos: los diques del cerro Mocho con alto contenido en Ti y mayor relación Sm/Yb, magmatismo cretácico superior-paleoceno al que pertenecen las facies extrusivas (Andesita Rivera y un evento eoceno al cual corresponden las facies hipabisales (Diques de Colipilli. Por último, la presencia de estas rocas en este segmento de los Andes evidencia una importante migración hacia el este del arco volcánico cretácico superior-eoceno indicando su posición más oriental.

  16. Endicamientos naturales en las nacientes del Arroyo Lileo (Provincia del Neuquén, Argentina

    Directory of Open Access Journals (Sweden)

    Ivanna M Penna

    2012-09-01

    Full Text Available En este trabajo analizamos tres endicamientos naturales por depositación de movimientos en masa que tuvieron lugar en las nacientes del arroyo Lileo (Cordillera de los Andes, norte neuquino, dos de ellos ocurrieron en los últimos 50 años. El primero ocurrió en el Holoceno, por desprendimiento de 0,14 km³ de volcanitas en la ladera oeste del valle, cerca de las nacientes del arroyo La Tregua. Este bloqueo originó una laguna permanente de 0,44 km². En los años '60, la depositación de una avalancha de detritos originada en la ladera opuesta del valle, frente a la escarpa de la avalancha de rocas, ocluyó la brecha labrada por erosión fluvial en el depósito de avalancha de rocas, generando un segundo cuerpo lacustre de tipo efímero. El último endicamiento, que tuvo lugar entre >1962-< 1985, se produjo por una progradación súbita de un conoide desarrollado en la desembocadura del arroyo La Tregua, debida a un importante aporte de material por un flujo de detritos originado en la misma zona de desprendimiento del caso descrito previamente. La depositación continua de materiales en la zona del conoide ha sepultado los postes del gasoducto Loma de la Lata - Talcahuano, construido en 1998. En función de que la zona de desprendimientos de la ladera este del valle La Tregua presenta evidencias de inestabilidad, consideramos posible que un nuevo movimiento en masa pueda dar lugar a otro endicamiento.

  17. Habitat use and movement of the endangered Arroyo Toad (Anaxyrus californicus) in coastal southern California

    Science.gov (United States)

    Gallegos, Elizabeth; Lyren, Lisa M.; Lovich, Robert E.; Mitrovich, Milan J.; Fisher, Robert N.

    2011-01-01

    Information on the habitat use and movement patterns of Arroyo Toads (Anaxyrus californicus) is limited. The temporal and spatial characteristics of terrestrial habitat use, especially as it relates to upland use in coastal areas of the species' range, are poorly understood. We present analyses of radiotelemetry data from 40 individual adult toads tracked at a single site in coastal southern California from March through November of 2004. We quantify adult Arroyo Toad habitat use and movements and interpret results in the context of their life history. We show concentrated activity by both male and female toads along stream terraces during and after breeding, and, although our fall sample size is low, the continued presence of adult toads in the floodplain through the late fall. Adult toads used open sandy flats with sparse vegetation. Home-range size and movement frequency varied as a function of body mass. Observed spatial patterns of movement and habitat use both during and outside of the breeding period as well as available climatological data suggest that overwintering of toads in floodplain habitats of near-coastal areas of southern California may be more common than previously considered. If adult toads are not migrating out of the floodplain at the close of the breeding season but instead overwinter on stream terraces in near-coastal areas, then current management practices that assume toad absence from floodplain habitats may be leaving adult toads over-wintering on stream terraces vulnerable to human disturbance during a time of year when Arroyo Toad mortality is potentially highest.

  18. Sistemas ambientales de la cuenca superior del arroyo Langueyú (partido de Tandil, Argentina)

    OpenAIRE

    Zulaica, Laura

    2008-01-01

    Estudios previos de zonificación ecológica de la cuenca superior del arroyo Langueyú (partido de Tandil) permitieron diferenciar y caracterizar seis sistemas ecológicos y definir unidades ecosistémicas de menor jerarquía escalar (componentes) en tres de ellos. El uso actual de las tierras del área está generalmente determinado por las potencialidades y restricciones ecológicas de los sistemas identificados. Estos usos diferenciales determinan a su vez distintos impactos en cada uno de los sis...

  19. Alternativas para conocer el comportamiento de la calidad del agua en un tramo del arroyo guachinango

    OpenAIRE

    Jeny Pérez P.; Geisy Hernández C.; Felicita González R.; Teresa López S.

    2008-01-01

    En el mundo actual ha evolucionado la tecnología para tratamiento y reutilización de aguas residuales, pero la obtención y aplicación de las mismas conlleva grandes inversiones, por lo que un país como el nuestro no está al alcance de la misma. Esto conlleva a la búsqueda de alternativas que se ajusten a nuestro presupuesto y nuestras condiciones, siempre que las mismas cumplan con las medidas de protección e higiene que existen para la utilización de estas aguas. En un tramo de arroyo con ve...

  20. 36 CFR 7.39 - Mesa Verde National Park.

    Science.gov (United States)

    2010-07-01

    ... 36 Parks, Forests, and Public Property 1 2010-07-01 2010-07-01 false Mesa Verde National Park. 7.39 Section 7.39 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.39 Mesa Verde National Park. (a) Visiting...

  1. Dengue in Cape Verde: vector control and vaccination

    CERN Document Server

    Rodrigues, Helena Sofia; Torres, Delfim F M

    2012-01-01

    In 2009, for the first time in Cape Verde, an outbreak of dengue was reported and over twenty thousand people were infected. Only a few prophylactic measures were taken. The effects of vector control on disease spreading, such as insecticide (larvicide and adulticide) and mechanical control, as well as an hypothetical vaccine, are estimated through simulations with the Cape Verde data.

  2. Arroyo Mocho Boulder Removal Project: Lawrence Livermore National Laboratory Hetch Hetchy Pump Station

    Energy Technology Data Exchange (ETDEWEB)

    Burkholder, L; Kato, T; Van Hattem, M

    2007-06-28

    The purpose of this biological assessment is to review the proposed Arroyo Mocho Boulder Removal Project in sufficient detail to determine to what extent the proposed action may affect any of the threatened, endangered, proposed, or sensitive species and designated or proposed critical habitats listed below. In addition, the following information is provided to comply with statutory requirements to use the best scientific and commercial information available when assessing the risks posed to listed and/or proposed species and designated and/or proposed critical habitat by proposed federal actions. This biological assessment is prepared in accordance with legal requirements set forth under regulations implementing Section 7 of the Endangered Species Act (50 CFR 402; 16 U.S.C 1536 (c)). It is our desire for the Arroyo Mocho Boulder Removal Project to receive incidental take coverage for listed species and critical habitat within the greater project area by means of amending the previous formal Section 7 consultation (1-1-04-F-0086) conducted a few hundred meters downstream by Lawrence Livermore National Laboratory (LLNL) in 2002. All conservation measures, terms and conditions, and reporting requirements from the previous Biological Opinion (1-1-04-F-0086) have been adopted for this Biological Assessment and/or amendment.

  3. Cardiovascular Surgery Residency Program: Training Coronary Anastomosis Using the Arroyo Simulator and UNIFESP Models

    Directory of Open Access Journals (Sweden)

    Miguel Angel Maluf

    2015-10-01

    Full Text Available ABSTRACT OBJECTIVE: Engage the UNIFESP Cardiovascular Surgery residents in coronary anastomosis, assess their skills and certify results, using the Arroyo Anastomosis Simulator and UNIFESP surgical models. METHODS: First to 6th year residents attended a weekly program of technical training in coronary anastomosis, using 4 simulation models: 1. Arroyo simulator; 2. Dummy with a plastic heart; 3. Dummy with a bovine heart; and 4. Dummy with a beating pig heart. The assessment test was comprised of 10 items, using a scale from 1 to 5 points in each of them, creating a global score of 50 points maximum. RESULTS: The technical performance of the candidate showed improvement in all items, especially manual skill and technical progress, critical sense of the work performed, confidence in the procedure and reduction of the time needed to perform the anastomosis after 12 weeks practice. In response to the multiplicity of factors that currently influence the cardiovascular surgeon training, there have been combined efforts to reform the practices of surgical medical training. CONCLUSION: 1 - The four models of simulators offer a considerable contribution to the field of cardiovascular surgery, improving the skill and dexterity of the surgeon in training. 2 - Residents have shown interest in training and cooperate in the development of innovative procedures for surgical medical training in the art.

  4. Crecimiento verde y biocomercio: una mirada andina

    OpenAIRE

    Alan Fairlie

    2013-01-01

    Hay un debate importante sobre diferentes nociones de Crecimiento Verde. Particularmente los diálogos producidos en la cumbre Rio +20, las propuestas de la OECD, el Banco Mundial y SELA. Paralelamente sigue la discusión de la pertinencia o no de la vigencia de la definición de desarrollo sostenible. De otro lado, hay grupos de estudio sobre Bioeconomía, y un interés particular de Europa en proponer iniciativas birregionales. También tenemos la noción de Biocomercio, que incluye los principios...

  5. La Tercera Revolución Verde

    OpenAIRE

    García Olmedo, Francisco

    1999-01-01

    La tercera revolución verde está en sus inicios y se basa en la aplicación de la ingeniería genética a la mejora de las plantas cultivadas. Su fundamento científico es la genética molecular, que se desarrolló a partir del descubrimiento de la estructura del ADN por Watson y Crick en 1952. Se traza un panorama completo de la evolución y mejora de las plantas cultivadas desde el neolítico hasta hoy, y se sitúa esta revolución en un contexto general.

  6. Experimentos de disolución de CaCO3 en foraminíferos bentónicos aglutinados del Paleoceno-Eoceno en Zumaya (Cuenca Vasco-Cantábrica, España

    Directory of Open Access Journals (Sweden)

    Arreguín-Rodríguez, G. J.

    2015-06-01

    Full Text Available The largest extinction of deep-sea benthic foraminifera in the Cenozoic occurred during the Paleocene-Eocene Thermal Maximum event (PETM, ~55.8 Ma. Much has been speculated about the causes of such extinction, and proposed mechanisms include changes in productivity and/or oxygenation of bottom waters, metabolic changes and in the composition of the food supply to the seafloor, or the ocean acidification related to the massive input of isotopically light carbon into the ocean-atmosphere system, among others. Here we analyse ocean acidification as a potential triggering mechanism of the extinctions. The early Eocene at the Zumaya section (Basque-Cantabrian Basin is marked by a 4 m-thick interval with a very low CaCO3 content. In order to analyse whether CaCO3 dissolution had a direct effect on the extinctions across the PETM, we car-ried out dissolution experiments on various species of agglutinated benthic foraminifera from Zumaya. In general, agglutinated species that do not disappear in the interval of most intense dissolution at Zumaya were not -or only slightly- affected by our dissolution experiments, since they do not have calcareous particles or cement. However, some species that went extinct or locally disappeared during the early Eocene, such as Dorothia cylindracea, Spiroplectammina spectabilis and Haplophragmoides cf. walteri, are resistant to dissolution. These results sug-gest that, in addition to ocean acidification, other factors must have contributed to the destabilization of benthic foraminiferal assemblages.Durante el evento de calentamiento global conocido como Máximo Térmico del Paleoceno-Eoceno (PETM por sus siglas en inglés; hace ~55.8 Ma tuvo lugar la mayor extinción de foraminíferos bentónicos de medios profundos de todo el Cenozoico. Mucho se ha especulado sobre las causas de dicha extinción, que incluyen cambios en la productividad y/o en la oxigenación de las aguas, cambios metabólicos y en la composición del

  7. Groundwater vulnerability in the Arroyo Feliciano basin. Entre Rios. Argentina; Vulnerabilidad del agua subterranea en la cuenca del Arroyo Feliciano. Entre Rios. Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Diaz, E. L.; Romero, E. C.; Boschetti, N. G.; Duarte, O. C.

    2009-07-01

    The study area includes the basin of the Feliciano stream (Arroyo Feliciano) which increasing water resources are affected by the agriculturization rise and the change of soil usage. The 8.199,4 km{sup 2} basin is undergoing a sudden change in the soil usage that goes from an extensive cattle production to intensive rice soybean usage. It has an urban population of approximately 11,600 inhabitants and there are a low number of rural settlers. It is unknown if there is pollution produced by agricultural activity. The objective of this paper is to estimate the pollution vulnerability of the aquifers used for supplying water for human consumption to the towns within the basin; irrigation and watered of animals, fundamentally cattle. There are two internationally standard-considered methods that have been used, known as DRASTIC and GOD, in order to establish the capacity of attenuation of pollutants for elimination, delay and dilution, for agrochemical and fertilizers set in the surface. The outcomes of the application of both methodologies indicate that there is high vulnerability to pollution areas which are in the surroundings of the minor riverbeds and the main course of the Feliciano stream, where the depth to the aquifers is minimal. In the rest of the basin the effect that offers the thickness of the silts and clay of the Hernandarias formation, operates protecting the aquifer. (Author) 12 refs.

  8. Paleomagnetism of Lower Permian Abo and Yeso Formation, Carizzo Arroyo, Lucero Uplift, New Mexico

    Science.gov (United States)

    Petronis, M. S.; Geissman, J. W.

    2002-12-01

    We report paleomagnetic data from Lower Permian hematite-cemented sandstones and siltstones from Carrizo Arroyo, on the eastern edge of the Lucero uplift along the west-side of the middle Rio Grande rift, to test the hypothesis that the rift margins have accommodated extensional strain via vertical axis rotation. In addition, we present a revised interpretation of the structural setting and deformation history of the area, were late-Tertiary transtensional stresses have produced the majority of the structures in the area. The paleomagnetic data are discussed in the context of this hypothesis. In the Rio Grande rift area, a mid-Cenozoic and younger extensional feature defining the eastern margin of the Colorado Plateau, relatively little work has been done to assess the magnitude and sense of vertical axis rotations of fault-bounded crustal blocks within and at the margins of the plateau. A growing body of evidence shows that the Colorado Plateau has experienced some degree of vertical axis rotation and some magnitude of northward translation, although the magnitudes of the rotation and translation have been subject to considerable debate. Eight to ten oriented samples from 50 sites have been fully demagnetized with all sites yielding interpretable results: 41 sites from three sections in the Lower Permian Abo Formation, and 9 sites in the Meseta Blanca Member of the overlying Yeso Formation. In most cases, progressive thermal demagnetization resulted in a nearly univectorial decay of the magnetization to the origin that is well grouped at the site level. After correcting for modest dip of strata, the 50 sites in Carrizo Arroyo yield an estimate group mean (D = 162.1°, I = -4.1°, α95 = 6.8°, k = 10.18). Overall, the data from this part of the west side of the rift are discordant, in a clockwise since, with Early Permian (about D = 140°, I = -2.0°) and mid-Permian (about D = 145°, I = -4.0°) expected directions. We interpret the paleomagnetic data from

  9. First fuel reload in Laguna Verde; Primera recarga de combustible en Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Bahena B, D

    1992-01-15

    A report containing the activities carried out during the first reload of nuclear fuel and major maintenance in the Laguna Verde nuclear reactor is presented. The previous and the specific activities are included. These last are related without including the technical considerations, data or the operation details, because these data were documented inside the registrations of the CFE, the ININ and in personal way. (Author)

  10. Alternativas para conocer el comportamiento de la calidad del agua en un tramo del arroyo guachinango

    Directory of Open Access Journals (Sweden)

    Jeny Pérez P.

    2008-01-01

    Full Text Available En el mundo actual ha evolucionado la tecnología para tratamiento y reutilización de aguas residuales, pero la obtención y aplicación de las mismas conlleva grandes inversiones, por lo que un país como el nuestro no está al alcance de la misma. Esto conlleva a la búsqueda de alternativas que se ajusten a nuestro presupuesto y nuestras condiciones, siempre que las mismas cumplan con las medidas de protección e higiene que existen para la utilización de estas aguas. En un tramo de arroyo con vertimientos fundamentalmente urbanos se realizan estudios preliminares con la intención de predecir la calidad de las aguas superficiales contaminadas a partir del seguimiento de indicadores físico químicos. El presente trabajo pretende estimar la calidad del agua a partir de la determinación de los parámetros: pH, conductividad eléctrica, sólidos totales, contenido de nitratos. El estudio se llevó a cabo en el arroyo Guachinango, uno de los afluentes del río Luyanó que atraviesa el municipio San Miguel del Padrón en el sureste de Ciudad de la Habana. Para ello se parte del seguimiento de estos indicadores en puntos escogidos a partir del levantamiento de las fuentes contaminantes. Con los datos obtenidos se realizaron análisis estadísticos y se determinó la calidad del agua.

  11. Flujo de barro del arroyo del Comedero, Jujuy: caracterización, causas y efectos

    Directory of Open Access Journals (Sweden)

    Maria A González

    2012-09-01

    Full Text Available El 12 de Enero de 2010 un flujo de barro afectó un predio de esparcimiento con piletas de aguas termales en la localidad de Termas de Reyes, provincia de Jujuy. Este evento dejó 87 heridos y produjo grandes daños materiales. Las lluvias fueron las desencadenantes del movimiento del material a través de la quebrada del arroyo del Comedero. El depósito del flujo estuvo constituido por casi el 70% de grava, 20% de arena y 10% de limo arcilla y transportó trozos de materia orgánica y bloques mayores a 1 m³. Debido a la plasticidad del material, se lo clasificó como flujo de barro. La velocidad del movimiento se calculó usando un método empírico, coincidiendo su resultado con otros obtenidos en eventos cercanos. El volumen fue medido directamente en el campo, y calculado a través de ecuaciones enunciadas para flujos similares. Según los registros históricos de los depósitos de diferentes eventos ocurridos en la quebrada del arroyo del Comedero, esta se ubica en un rango de probabilidad muy alta de que se produzcan flujos. Con respecto a la clasificación de la magnitud del flujo de barro sobre el río Reyes, este pertenece a la clase con consecuencias potenciales de destrucción parcial de poblados, infraestructura de rutas y puentes, y bloqueo de quebradas. Los datos de velocidad, volumen y frecuencia calculados en este trabajo, que forman parte de la Carta de Peligrosidad Geológica Salta del SEGEMAR, son necesarios para el mapeo de peligrosidad, la programación de obras de infraestructura y la planificación territorial.

  12. DCVD Measurements at the Laguna Verde NPP

    Energy Technology Data Exchange (ETDEWEB)

    Chen, J.D.; Gerwing, A.F. [Channel Systems Inc., Pinawa MA (Canada); Kosierb, R. [Canadian Nuclear Safety Commission, Ottawa, ON (Canada); Vones, J.; Broodryck, A. [International Atomic Energy Agency, Vienna (Austria)

    2006-12-30

    A new digital Cerenkov viewing device (DCVD) with high ultraviolet light sensitivity has been developed. Field measurements on BWR spent fuel at Laguna Verde Nuclear Power Plant Unit 2 resulted in new Cerenkov information on GE9 and GE12 spent fuel assemblies. Off-alignment measurements show: quantitative differences in the degree of light collimation from between the fuel rods; lack of light collimation from water rods; and decreased light collimation from partial length rod positions. Hidden rods could also be detected in off-angle views. The results indicate that it may be possible to detect missing partial-length fuel rods in GE12 fuel assemblies. The new DCVD was able to verify low burnup, long-cooled, natural uranium GE6 fuel assemblies.

  13. Mercadeo verde de una empresa dorada

    Directory of Open Access Journals (Sweden)

    Carlos Mario Uribe-Saldarriaga

    2014-01-01

    Full Text Available El caso presenta la campa ̃ na de mercadeo realizada por Ecopetrol entre 2009 y 2012 para la introducción en Colombia del diésel ultra bajo de azufre denominado diésel limpio. Se examina la campa ̃ na desde 2 puntos de vista: el primero, el posicionamiento de Ecopetrol como una de las empresas más admiradas de Colombia, tanto por sus resultados financieros como por sus actividades en la responsabilidad social empresarial; el segundo, desde las exigencias que se hacen al mercadeo ambiental en los países desarro- llados, especialmente con respecto al lavado verde, teniendo en cuenta a la vez que Ecopetrol opera en un país en vía de desarrollo donde existe un menor avance en las exigencias ambientales hechas por los grupos de interés.

  14. Palo Verde Unit 3 BMI nozzle modification

    International Nuclear Information System (INIS)

    The 61 BMI (Bottom Mount Instrumentation) nozzles of the unit 3 of the Palo Verde plant have been examined through ASME Code Case N722. The nozzle 3 was the only one with leakage noted. The ultrasound testing results are characteristic of PWSCC (Primary Water Stress Corrosion Cracking). The initiation likely occurred at a weld defect which was exposed to the primary water environment resulting in PWSCC. All other nozzles (60) showed no unacceptable indications. Concerning nozzle 3 one crack in J-groove weld connected large defect to primary water. An environmental model has been used to simulate and optimize the repair. The AREVA crew was on site 18 days after contract award and the job was completed in 12 days, 30 hours ahead of baseline schedule. This series of slides describes the examination of the BMI nozzles, the repair steps, and alternative design concepts

  15. Impuestos verdes: una meta de equidad

    Directory of Open Access Journals (Sweden)

    Lilliana Arrieta Quesada

    2011-09-01

    Full Text Available Al considerar necesario incorporar a los grupos económicos en el gran proyecto de alcanzar metas de desarrollo sostenible, que surge como un nuevo paradigma al tomarse en consciencia por parte de los organismos internacionales, entre ellos las Naciones Unidas, de la necesidad de hacer un planteamiento de desarrollo económico diferente al convencional que considera aspectos ambientales y de equidad social, se admite por primera vez que la explotación de los recursos naturales y su transformación en materia prima y fuente energética, tiene límites, los cuales deben ser considerados en cualquier planteamiento serio de desarrollo económico.Es así como surge la tesis de los impuestos verdes como una opción que permita a los gobiernos incidir tanto en el mercado como en el sector industrial y en los hábitos de los consumidores.

  16. A Educação Musical em Cabo Verde

    Directory of Open Access Journals (Sweden)

    Alcides J. D. Lopes

    2012-09-01

    Full Text Available O presente artigo pretende abordar o tema A Educação Musical em Cabo Verde partindo de uma análise dos dados publicados e de entrevistas realizadas com personalidades relevantes ao tema.

  17. Postura y equilibrio de las miniaturas orgánicas del Códice de San Andrés de Arroyo Posture and balance of the organic miniatures of the Codex of San Andrés de Arroyo

    Directory of Open Access Journals (Sweden)

    Adelina Martínez Rodríguez

    2008-03-01

    Full Text Available Los Beatos son códices medievales españoles que hacen referencia al Apocalipsis. El texto está profusamente acompañado de miniaturas con personajes humanos y celestiales. El Beato de San Andrés de Arroyo es uno de ellos. Hemos realizado un análisis anatómico y postural de las figuras que aparecen en estos Beatos. Hemos encontrado figuras humanas y celestiales cuya postura y equilibrio son disarmónicas, contrariando a la fisiología. De otro lado hemos encontrado otras figuras que mantienen un perfecto equilibrio, representando correctamente el movimiento y la estática. Creemos en base a todo ello que en el Beato de San Andrés de Arroyo hubo más de un artista iluminador, uno de ellos era más naturalista que el otro u otros.The Beatuses are Spanish medieval codices that refer to the Apocalypses. Miniatures full of human and celestial characters accompany the text. The Beatus of San Andrés de Arroyo is one of them. We have made an anatomic and postural analysis of the figures of this Beatus. We’ve found human and celestial figures who’s posture and balance are lacking in harmony, contrary to physiology. On the other hand we have found other figures that maintain a perfect balance, representing movement and motionlessness correctly.We believe, based on all this, that there is more than one Beatus de San Andrés de Arroyo illustrator, one of them being more of a naturalist than the other.

  18. Strategic analysis for the MER Cape Verde approach

    OpenAIRE

    Gaines, Daniel; Belluta, Paolo; Herman, Jennifer; Hwang, Pauline; Mukai, Ryan; Porter, Dan; Jones, Byron; Wood, Eric; Grotzinger, John; Edgar, Lauren; Hayes, Alex; Hare, Trent; Squyres, Steve

    2009-01-01

    The Mars Exploration Rover Opportunity has recently completed a two year campaign studying Victoria Crater. The campaign culminated in a close approach of Cape Verde in order to acquire high resolution imagery of the exposed stratigraphy in the cliff face. The close approach to Cape Verde provided significant challenges for every subsystem of the rover as the rover needed to traverse difficult, un-characterised terrain and approach a cliff face with the potential of blocking out solar energy ...

  19. Geología y registros magnéticos entre arroyo La Tapera y Santa Clara del Mar, Mar del Plata Geology and magnetic records between Arroyo La Tapera and Santa Clara del Mar, Mar del Plata

    Directory of Open Access Journals (Sweden)

    J.C. Bidegain

    2005-09-01

    Full Text Available Estudios paleomagnéticos se realizaron en secuencias del Pleistoceno-Holoceno del sector comprendido entre el arroyo La Tapera y Santa Clara del Mar, en Mar del Plata. Los sedimentos de la base de los perfiles en el arroyo La Tapera y en Camet, que se interpreta pertenecen a la Formación Ensenada, contienen direcciones de polaridad reversa y se asignan al cron Matuyama. Las capas sedimentarias de la base del perfil de Santa Clara del Mar, solo presentan direcciones de polaridad normal, por consiguiente toda la secuencia sedimentaria de esta localidad se asigna al cron Brunhes, (Paleomagnetic studies were carried out in Pleistocene-Holocene sedimentary sequences exposed between Arroyo La Tapera and Santa Clara del Mar in Mar del Plata. The sediments exposed in the lower part of the La Tapera and Camet sections, which apparently belong to the Ensenada Formation, show reverse polarity directions and are assigned to the Matuyama Polarity Chron. The sedimentary layers exposed at the base in Santa Clara del Mar present normal directions of polarity, hence they were consequently assigned to the Brunhes Polarity Chron (< 0,78 Ma. Susceptibility values show a similar behaviour to those obtained in other localities of the Argentine loess plateau. Lowest values are always related to stronger pedogenesis and weathering. Consequently we envisage that the windblown titanomagnetites, having settled out during drier glacial periods, account for the natural magnetic remanence and the higher susceptibility values in less weathered layers.

  20. Shallow Structure of the Eagle Rock and Raymond Faults in Arroyo Seco, Los Angeles County, California

    Science.gov (United States)

    Scheirer, D. S.; Rymer, M. J.; Catchings, R. D.; Goldman, M.; Fuis, G.

    2012-12-01

    To understand the location, dip, and possible structural connection of the Eagle Rock and Raymond faults in Pasadena and South Pasadena, California, we acquired and analyzed high-resolution seismic reflection and refraction data, as well as gravity observations, along the floor of the Arroyo Seco. The studies were conducted to aid in understanding the seismic hazards of these faults in this urban setting. Seismic reflection and refraction data, including both P-wave and S-wave records, were collected along two profiles, a 1.2-km-long northern profile crossing the Eagle Rock fault, and a 450-m-long southern profile crossing the Raymond fault. Seismic sources were Betsy-Seisgun shots, accelerated weight drops, and repeated sledge-hammer impacts, which were recorded on multi-channel seismograph systems connected to vertical- and horizontal-component geophones spaced at a 5-m interval. Gravity data were collected along a single ~3-km-long profile coincident with and extending beyond and between the two seismic profiles, with stations spaced every 25-m near the fault traces and at greater intervals farther from the fault traces. We carefully accounted for the gravity effects of the adjacent concrete drainage channel and of the walls of the arroyo, to generate gravity anomalies that reflect sub-surface density contrasts across the Eagle Rock and Raymond faults. Seismic reflection image quality is compromised by the highly-deformed Miocene strata offset by these faults. However, reflection and especially refraction results indicate that both the Eagle Rock and Raymond faults consist of multiple, steeply-north-dipping fault strands. P- and S-wave seismic tomography results of the uppermost 50-100 m yield velocity variations that can be converted to probable density variations, and thus be included in the gravity anomaly analysis. The gravity anomalies predicted from the velocity variations account for less than one-third of the anomalies observed across the faults

  1. Characterization of salinity and selenium loading and land-use change in Montrose Arroyo, western Colorado, from 1992 to 2010

    Science.gov (United States)

    Moore, Jennifer L.

    2011-01-01

    Salinity and selenium are naturally occurring and perva-sive in the lower Gunnison River Basin of Colorado, includ-ing the watershed of Montrose Arroyo. Although some of the salinity and selenium loading in the Montrose Arroyo study area is from natural sources, additional loading has resulted from the introduction of intensive irrigation in the water-shed. With increasing land-use change and the conversion from irrigated agricultural to urban land, land managers and stakeholders need information about the long-term effects of land-use change on salinity and selenium loading. In response to the need to advance salinity and selenium science, the U.S. Geological Survey, in cooperation with the Bureau of Reclamation, Colorado River Basin Salinity Control Forum, and Colorado River Water Conservation District, developed a study to characterize salinity and selenium loading and how salinity and selenium sources may relate to land-use change in Montrose Arroyo. This report characterizes changes in salinity and selenium loading to Montrose Arroyo from March 1992 to February 2010 and the magnitude of land-use change between unirrigated desert, irrigated agricultural, and urban land-use/land-cover types, and discusses how the respective loads may relate to land-use change. Montrose Arroyo is an approximately 8-square-mile watershed in Montrose County in western Colorado. Salinity and selenium were studied in Montrose Arroyo in a 2001 study as part of a salinity- and selenium-control lateral project. The robust nature of the historical dataset indicated that Montrose Arroyo was a prime watershed for a follow-up study. Two sites from the 2001 study were used to monitor salinity and selenium loads in Montrose Arroyo in the follow-up study. Over the period of 2 water years and respective irrigation seasons (2008-2010), 27 water-quality samples were collected and streamflow measurements were made at the historical sites MA2 and MA4. Salinity and selenium concen-trations, loads

  2. Opportunity's Second Martian Birthday at Cape Verde

    Science.gov (United States)

    2007-01-01

    A promontory nicknamed 'Cape Verde' can be seen jutting out from the walls of Victoria Crater in this approximate true-color picture taken by the panoramic camera on NASA's Mars Exploration Rover Opportunity. The rover took this picture on martian day, or sol, 1329 (Oct. 20, 2007), more than a month after it began descending down the crater walls -- and just 9 sols shy of its second Martian birthday on sol 1338 (Oct. 29, 2007). Opportunity landed on the Red Planet on Jan. 25, 2004. That's nearly four years ago on Earth, but only two on Mars because Mars takes longer to travel around the sun than Earth. One Martian year equals 687 Earth days. The overall soft quality of the image, and the 'haze' seen in the lower right portion, are the result of scattered light from dust on the front sapphire window of the rover's camera. This view was taken using three panoramic-camera filters, admitting light with wavelengths centered at 750 nanometers (near infrared), 530 nanometers (green) and 430 nanometers (violet).

  3. Conopeptides from Cape Verde Conus crotchii

    Directory of Open Access Journals (Sweden)

    Agostinho Antunes

    2013-06-01

    Full Text Available Marine Cone snails of the genus Conus contain complex peptide toxins in their venom. Living in tropical habitats, they usually use the powerful venom for self-defense and prey capture. Here, we study Conus crotchii venom duct using a peptide mass-matching approach. The C. crotchii was collected on the Cape Verde archipelago in the Boa Vista Island. The venom was analyzed using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS. About 488 molecular masses between 700 Da and 3000 Da were searched bymatching with known peptide sequences from UniProtKB protein sequence database. Through this method we were able to identify 12 conopeptides. For validation we considered the error between the experimental molecular mass (monoisotopic and the calculated mass of less than 0.5 Da. All conopeptides detected belong to the A-, O1-, O2-, O3-, T- and D-superfamilies, which can block Ca2+ channels, inhibit K+ channels and act on nicotinic acetylcholine receptors (nAChRs. Only a few of the detected peptides have a 100% UniProtKB database similarity, suggesting that several of them could be newly discovered marine drugs.

  4. El anillo verde de Vitoria-Gasteiz

    Directory of Open Access Journals (Sweden)

    Marañón, Blanca

    2001-10-01

    de la periferia de la ciudad, donde coexistían zonas de alto valor ecológico sometidas a agresiones de todo tipo, con otros espacios degradados y marginales, fruto de la expansión urbana e industrial. La restauración ecológico-paisajística de estos espacios y su acondicionamiento para el uso público han permitido configurar un "anillo verde multifunción" en torno a la ciudad que está proporcionando importantes beneficios ambientales, sociales y económicos. El anillo verde ha jugado un papel importante en la integración naturaleza-ciudad, equilibrando la oferta de zonas verdes entre todos los barrios y favoreciendo la conexión entre los espacios verdes urbanos y los espacios naturales del entorno agrícola. Ha propiciado, asimismo, el desarrollo de nuevas actividades relacionadas con el ocio y el esparcimiento y con la formación, educación y sensibilización ambiental; actividades que, por un lado, están suponiendo un revulsivo para el sector empresarial ambiental y la integración socio-laboral de determinados colectivos sociales y, por otro, contribuyen a la conservación de estos espacios, al convertirse los usuarios en sus mayores defensores y guardianes. La utilización de algunos de estos espacios como superficies de laminación de agua en épocas de avenidas para solventar problemas de inundación en las zonas industriales es otro ejemplo del valor añadido obtenido al plantear soluciones integrales. Los excelentes resultados obtenidos tras nueve años de trabajo demuestran la viabilidad técnica y económica y la rentabilidad social de este proyecto, que representa una prueba evidente de la decidida voluntad municipal de avanzar hacia un modelo de ciudad sostenible en armonía con el medio natural que la rodea.

  5. Spatial Vegetation Data for Mesa Verde National Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — The Mesa Verde National Park Vegetation Map Database was developed as a primary product in the Mesa Verde National Park Vegetation Classification, Distribution, and...

  6. Evolución del campo de esfuerzos horizontal desde el eoceno a la actualidad en la cuenca neuquina Horizontal Stress Field Evolution from Eocene to Present in Neuquen Basin.

    Directory of Open Access Journals (Sweden)

    Cecilia G Guzmán

    2011-12-01

    Full Text Available Para estudiar la continuidad y la evolución en el tiempo de la dirección de los esfuerzos horizontales en el ámbito de la cuenca Neuquina, se integraron resultados previamente obtenidos a partir del análisis de breakout de pozos con información de diques de asfaltita presentes en la región y diques volcánicos medidos en las sierras de Cara Cura y Reyes. Los diques de bitumen de la cuenca Neuquina se formaron durante el Paleoceno - Eoceno en un contexto en el que el esfuerzo máximo era horizontal y con orientación NE. Dentro de los diques volcánicos analizados se reconocieron dos poblaciones principales, población I (NE y población II (NNE y una secundaria, la población III (NO. La edad de estos diques no está aun bien establecida, pero se los relaciona a un evento magmático del Oligoceno tardío - Mioceno. Tanto entre los diques de bitumen como entre los volcánicos se logró diferenciar una población del tipo I (ENE- NE, dejando en evidencia la dirección del esfuerzo máximo al tiempo de su formación. Más allá de las incertidumbres sobre la edad de los diques volcánicos y de bitumen, se interpreta que durante gran parte del Terciario la orientación del esfuerzo horizontal máximo fue NE. Sin embargo, los datos de breakout muestran que en la actualidad es algo distinto con una dirección media ENE. Este cambio en la dirección de los esfuerzos es coherente con el cambio en el vector de subducción producido entre el Eoceno y la actualidad.Continuity and evolution in time of the horizontal stress direction in the Neuquen Basin area, derived from the analysis of recent borehole data and orientation of volcanic dykes measured in outcrop in the Cara Cura and Reyes Ranges is presented. The bitumen dykes along the Neuquén Basin were formed during Paleocene - Eocene in a context where the maximum stress was horizontal and had a NE. Within the analyzed volcanic dykes two major groups have been recognized, group I (NE orientation

  7. Arroyo channel head evolution in a flash-flood-dominated discontinuous ephemeral stream system

    Science.gov (United States)

    DeLong, Stephen B.; Johnson, Joel P.L.; Whipple, Kelin X.

    2014-01-01

    We study whether arroyo channel head retreat in dryland discontinuous ephemeral streams is driven by surface runoff, seepage erosion, mass wasting, or some combination of these hydrogeomorphic processes. We monitored precipitation, overland flow, soil moisture, and headcut migration over several seasonal cycles at two adjacent rangeland channel heads in southern Arizona. Erosion occurred by headward retreat of vertical to overhanging faces, driven dominantly by surface runoff. No evidence exists for erosion caused by shallow-groundwater–related processes, even though similar theater-headed morphologies are sometimes attributed to seepage erosion by emerging groundwater. At our field site, vertical variation in soil shear strength influenced the persistence of the characteristic theater-head form. The dominant processes of erosion included removal of grains and soil aggregates during even very shallow (1–3 cm) overland flow events by runoff on vertical to overhanging channel headwalls, plunge-pool erosion during higher-discharge runoff events, immediate postrunoff wet mass wasting, and minor intra-event dry mass wasting on soil tension fractures developing subparallel to the headwall. Multiple stepwise linear regression indicates that the migration rate is most strongly correlated with flow duration and total precipitation and is poorly correlated with peak flow depth or time-integrated flow depth. The studied channel heads migrated upslope with a self-similar morphologic form under a wide range of hydrological conditions, and the most powerful flash floods were not always responsible for the largest changes in landscape form in this environment. 

  8. Adaptive Optics: Arroyo Simulation Tool and Deformable Mirror Actuation Using Golay Cells

    Science.gov (United States)

    Lint, Adam S.

    2005-01-01

    The Arroyo C++ libraries, written by Caltech post-doc student Matthew Britton, have the ability to simulate optical systems and atmospheric signal interference. This program was chosen for use in an end-to-end simulation model of a laser communication system because it is freely distributed and has the ability to be controlled by a remote system or "smart agent." Proposed operation of this program by a smart agent has been demonstrated, and the results show it to be a suitable simulation tool. Deformable mirrors, as a part of modern adaptive optics systems, may contain thousands of tiny, independently controlled actuators used to modify the shape of the mirror. Each actuator is connected to two wires, creating a cumbersome and expensive device. Recently, an alternative actuation method that uses gas-filled tubes known as Golay cells has been explored. Golay cells, operated by infrared lasers instead of electricity, would replace the actuator system thereby creating a more compact deformable mirror. The operation of Golay cells and their ability to move a deformable mirror in excess of the required 20 microns has been demonstrated. Experimentation has shown them to be extremely sensitive to pressure and temperature, making them ideal for use in a controlled environment.

  9. El Grupo Cabo Domingo, Tierra del Fuego: bioestratigrafía, paleoambientes y acontecimientos del Eoceno-Mioceno marino The Cabo Domingo Group, Tierra del Fuego: Biostratigraphy, paleoenvironments, and events of the marine Eocene-Miocene

    Directory of Open Access Journals (Sweden)

    N. Malumián

    2006-06-01

    Full Text Available El Grupo Cabo Domingo, cuenca Austral, Eoceno superior a Mioceno medio, comprende una secuencia episódica de sedimentitas marinas levemente dislocadas y depositadas principalmente al norte de la falla de punta Gruesa en Tierra del Fuego. Se inicia con la profundización de la cuenca, resultado de los niveles de mar alto del Eoceno tardío amplificados por un diastrofismo generalizado (Fase Incaica. En el depocentro de la cuenca está representado por el miembro superior de la Formación Cerro Colorado (140 m, fangolitas y areniscas, con el último registro de Globigerinatheka index, y las apariciones de Praetenuitella insolita e Isthmolithus recurvus, 36-34 Ma; y fuera del depocentro, por el conglomerado Tchat-Chii (70 m, Eoceno cuspidal-Oligoceno basal, y el glauconítico A en el subsuelo en el norte de la Isla. El mínimo contenido de esmectita y la abundancia de niveles con Chiloguembelina reflejan tectonismo activo y caída de temperatura durante la depositación del miembro superior y el glauconítico A. Continúan las capas de la Estancia María Cristina (>75 m, arcillitas y areniscas, Oligoceno temprano, 34-30 Ma y del puesto Herminita (200 m, arcillitas, Oligoceno, 30-26,5 Ma, principalmente con microfaunas residuales de foraminíferos aglutinados depositadas por debajo de la línea de compensación de la calcita, corresponden a la máxima profundización de la cuenca que habilitó el ingreso de aguas antárticas corrosivas. Seguidas por la Formación Desdémona (250 m, fangolitas tobáceas, bioturbadas, depositadas en las proximidades de la lisoclina, con asociaciones de foraminíferos de aguas abisales, que representa los niveles altos de mar del Oligoceno cuspidal-Mioceno temprano. Seguidas por las capas del Cabo Ladrillero (80 m, areniscas glauconíticas basales y fangolitas con asociaciones de foraminíferos de plataforma externa, y 75 m de fangolitas carbonosas, areniscas finas y arcillitas, Mioceno inferior, con la asociaci

  10. Strategic Analysis for the MER Cape Verde Approach

    Science.gov (United States)

    Gaines, Daniel; Belluta, Paolo; Herman, Jennifer; Hwang, Pauline; Mukai, Ryan; Porter, Dan; Jones, Byron; Wood, Eric; Grotzinger, John; Edgar, Lauren; Hayes, Alex; Hare, Trent; Squyres, Steve

    2009-01-01

    The Mars Exploration Rover Opportunity has recently completed a two year campaign studying Victoria Crater. The campaign culminated in a close approach of Cape Verde in order to acquire high resolution imagery of the exposed stratigraphy in the cliff face. The close approach to Cape Verde provided significant challenges for every subsystem of the rover as the rover needed to traverse difficult, uncharacterised terrain and approach a cliff face with the potential of blocking out solar energy and communications with Earth. In this paper we describe the strategic analyses performed by the science and engineering teams so that we could successfully achieve the science objectives while keeping the rover safe.

  11. Strategic analysis for the MER Cape Verde approach

    Science.gov (United States)

    Gaines, D.; Belluta, P.; Herman, J.; Hwang, P.; Mukai, R.; Porter, D.; Jones, B.; Wood, E.; Grotzinger, J.; Edgar, L.; Hayes, A.; Hare, T.; Squyres, S.

    2009-01-01

    The Mars Exploration Rover Opportunity has recently completed a two year campaign studying Victoria Crater. The campaign culminated in a close approach of Cape Verde in order to acquire high resolution imagery of the exposed stratigraphy in the cliff face. The close approach to Cape Verde provided significant challenges for every subsystem of the rover as the rover needed to traverse difficult, uncharacterised terrain and approach a cliff face with the potential of blocking out solar energy and communications with Earth. In this paper we describe the strategic analyses performed by the science and engineering teams so that we could successfully achieve the science objectives while keeping the rover safe. ??2009 IEEE.

  12. La química verde y el desarrollo sustentable

    Directory of Open Access Journals (Sweden)

    Angélica Sierra

    2014-02-01

    Full Text Available La química es indispensable para asegurar que las siguientes generaciones de productos químicos, materiales y energía sean sustentables. La química es también esencial para limpiar el planeta de contaminantes ya existentes. En este artículo se presenta una breve revisión del desarrollo de la Química Verde, enfatizando sus principios, así como citando ejemplos específicos de compuestos usados en procesos no contaminantes sustentables y de apoyos otorgados para motivar el desarrollo de procesos sustentables y Química Verde.

  13. Co-precipitation/Adsorption of Boron for Treatment of Produced Water at the Arroyo Grande Oil Field, California

    OpenAIRE

    Wörlén, Cecilia

    2008-01-01

    The goal of this Master’s thesis project is to develop a method for boron precipitation inproduced waters from the Arroyo Grande oil field outside San Luis Obispo in centralCalifornia. The current oil recovery is a closed system that pumps up to 1,500 barrelsoil/day. A new system is proposed to increase oil production three times andsimultaneously dewater half of the water in the oil formation during the time span of tenyears, which amounts to 55,000 barrels/day. The water will be treated and...

  14. Mercury dispersal to arroyo and coastal sediments from abandoned copper mine operations, el Boléo, Baja California.

    Science.gov (United States)

    Kot, Fyodor; Shumilin, Evgueni; Rodríguez-Figueroa, Griselda Margarita; Mirlean, Nicolai

    2009-01-01

    Evidence for mercury dispersal in an arid coastal region of central Baja California (Mexico) suggests that abandoned copper mining operations are a noticeable source of mercury in the environment. There is a generally elevated level of mercury in alluvium of arroyos throughout the mining district (0.14-0.18 mg kg(-1)). In the first several dozen meters surrounding two of the biggest mines, mercury levels range from 0.26 to 3.16 mg kg(-1), forming a halo of anomalously high concentrations. The coastal marine sediments, particularly those close to the copper smelter in the town of Santa Rosalía, also display some mercury enrichment. PMID:18800200

  15. Mercury dispersal to arroyo and coastal sediments from abandoned copper mine operations, El Boléo, Baja California

    OpenAIRE

    Kot, Fydor; Shumilin, Evgueni; Rodríguez Figueroa, Griselda Margarita; Mirlean, Nicolai

    2009-01-01

    Evidence for mercury dispersal in an arid coastal region of central Baja California (Mexico) suggests that abandoned copper mining operations are a noticeable source of mercury in the environment. There is a generally elevated level of mercury in alluvium of arroyos throughout the mining district (0.14–0.18 mg kg-1). In the first several dozen meters surrounding two of the biggest mines, mercury levels range from 0.26 to 3.16 mg kg-1, forming a halo of anomalously high concentrations. The coa...

  16. Densidad del Mono aullador Alouatta seniculus (Linnaeus, 1766) Mammalia: primates en el arroyo coloso, Departamento de Sucre, Colombia

    OpenAIRE

    Fajardo Patiño Alirio; De la Ossa Velasquez Jaime L.

    1996-01-01

    Nueve manadas de Alouatta seniculus, fueron estudiadas a lo largo de tres meses y medio, entre Mayo y Agosto de 1983. Se tomaron en cuenta aspectos relativos al estado y densidad poblacional en el Arroyo Colosó, Departamento de Sucre. Se establece una relación de los datos obtenidos y procesados en este trabajo con los suministrados por otros autores en estudios similares con la misma especie y en diferentes lugares.Nine troops of Alouatta seniculus, were studied for a period of three and hal...

  17. Source Apportionment of Particulate Matter Sampled in Cape Verde

    Science.gov (United States)

    Marta Almeida, Susana; Almeida-Silva, Marina; Pio, Casimiro; Nunes, Teresa; Cardoso, João; Cerqueira, Mário; Reis, Miguel; Chaves, Paula Cristina; Taborda, Ana

    2013-04-01

    Due to its geographical position, Cape Verde is highly affected by the transport of dust from the Sahara desert. Consequently, very high concentrations of particles are registered in this archipelago, being essential to elucidate the role that Saharan dust may play in the degradation of Cape Verde air quality, human health, wellbeing, visibility, tourism and economy. The objective of this study was to identify the main sources and origins of particles sampled in Cape Verde. PM10 was sampled during 2011 and chemical characterization of particles was performed by Neutron Activation Analysis and Particle Induced X-ray Emission for elemental measurements, by Ion Chromatography for the determination of water soluble ions and by a Thermal-optical system for the measurement of carbonaceous aerosol. Source apportionment was performed by integrating Positive Matrix Factorization and Backward Trajectory Analysis. Results showed that in average 68% of the PM10 mass in Cape Verde had a natural origin, being 48% associated with the soil and 20% associated with the sea. During the transport of dust from the Sahara desert the contribution of mineral aerosol increased significantly (69% during periods affected by trajectories provided from Sahara desert versus 13% during periods affected by local sources).

  18. The Politics of an Emancipatory Literacy in Cape Verde.

    Science.gov (United States)

    Macedo, Donaldo P.

    1983-01-01

    Examines the literacy program in Cape Verde against theories of cultural production and reproduction. Argues that the use of Portuguese rather than the Capeverdean dialect reproduces a colonial, elitist mentality, and that functional literacy in Portuguese fails to provide Capeverdeans with opportunities for critical reflection and social…

  19. Mexico City's Indios Verdes: Exploring Cultural Processes Using Public Memorials

    Science.gov (United States)

    Dixon, Seth

    2010-01-01

    Finding ways to convey current research in cultural geography that is predicated on theoretical frameworks in a manner accessible to high school and undergraduate college students is pedagogically important but difficult in practice. Statues in Mexico City nicknamed the Indios Verdes offer a rich example of fluid cultural dynamics that illustrate…

  20. A transdisciplinaridade no encino superior em Cabo Verde

    Directory of Open Access Journals (Sweden)

    Jorge Brito Sousa

    2003-01-01

    Full Text Available Historical and geographic reasons transformed Cape Verde, across the last five centuries, into a place of civilizations´ confluence and experimentation / acclimatization of the most diverse resources and ideas. This was expressed as an open society to the world, an economy of circulation and through the universal personality of the Capeverdian man. This strategic position in a globalized world requires a transdisciplinary vision from the citizen. Higher education is a privileged vehicle for such an end and under the scope of UNESCO´s recommendations transdisciplinarity must be part of the new 21st century university. The birth of a transdisciplinary university in Cape Verde looks like a natural thing. Such university was born in 2001(University Jean Piaget of Cape Verde and already develops a transdisciplinary action and research pointed in this direction. However, Cape Verde´s context of higher education lacks of bigger attention and the transdisciplinary vision would be more than necessary for a liberal education, for the benefit of a terrestrial citizenship

  1. Cape Verde: Marketing Good Governance Kap Verde: Die Vermarktung von Good Governance

    Directory of Open Access Journals (Sweden)

    Bruce Baker

    2009-01-01

    Full Text Available Faced with a lack of natural resources Cape Verde has made good governance one of its most marketable products. Running parallel to the institutionalisation of democratic politics there has been an overhaul and growing sophistication in public administration, though certain weaknesses persist. This report argues that it is reform and improvement in this area in particular that has enabled this small island state to punch above its weight and achieve remarkable social, economic and political results. But will the successful formula of the past decade prove sufficient for the future? Poverty and unemployment have by no means been conquered. Much of the economic growth has been based in the tourist sector and the government is well aware of the dangers of over-reliance on a single industry. Cape Verde’s midway location between South America and Europe and its increasing international transport connections will continue to offer advantages to drug traffickers. The next few years of the world financial crisis will show whether marketing good governance is enough and whether this is the model for small resource developing states. Der Inselstaat Kap Verde hat seine Anstrengungen zu guter Regierungsführung (Good Governance erfolgreich demonstriert. Parallel zur Institutionalisierung demokratischer Regierungsstrukturen wurde die Verwaltung reformiert und modernisiert, wenn auch immer noch Problembereiche erkennbar sind. Der Autor sieht insbesondere in den politischen und administrativen Reformen den Hintergrund für die erfolgreiche soziale, wirtschaftliche und politische Entwicklung dieser kleinen Inselrepublik. Aber wird dieses Rezept, das im vergangenen Jahrzehnt seine Wirksamkeit beweisen konnte, auch in Zukunft ausreichend sein? Armut und Unterbeschäftigung sind keineswegs besiegt. Ein Großteil des Wirtschaftswachstums basiert auf dem Tourismussektor; die Regierung ist sich der Gefahr wohl bewusst, die in zu großer Abhängigkeit von einem

  2. "War on Terror" Is a Curative: Recontextualization and Political Myth-Making in Gloria Macapagal-Arroyo's 2002-2004 State of the Nation Addresses

    Science.gov (United States)

    Navera, Gene Segarra

    2011-01-01

    The article examines the State of the Nation addresses (SONA) delivered by Philippine President Gloria Macapagal-Arroyo (2001-2010) from 2002-2004, during which time she actively invoked the need to engage in the U.S. government-led "global war on terror." It specifically investigates how these presidential speeches recontextualized the war on…

  3. Fluctuations in late Neoproterozoic atmospheric oxidation — Cr isotope chemostratigraphy and iron speciation of the late Ediacaran lower Arroyo del Soldado Group (Uruguay)

    DEFF Research Database (Denmark)

    Frei, Robert; Gaucher, Claudio; Stolper, Daniel;

    2013-01-01

    .0‰) in iron-rich cherts and banded iron formation horizons within the Arroyo del Soldado Group (Ediacaran; Uruguay) that can be explained by rapid, effective oxidation of Fe(II)-rich surface waters. These fluctuations are correlated with variations in ratios of highly reactive iron (FeHR) to total iron (Fetot...

  4. Recent formation of arroyos in the Little Missouri Badlands of southwestern North Dakota

    Science.gov (United States)

    Gonzalez, M.A.

    2001-01-01

    In the Little Missouri Badlands of southwestern North Dakota, the channels of ephemeral streams are incised 2 to 10 m or more into mid-to-late Holocene alluvium. The objectives of this study were to determine the timing and cause(s) of the most recent episodes of fluvial incision and to develop a process-response model that illustrates the formation and evolution of arroyos in this region. The purpose was to distinguish natural from anthropogenic changes to the landscape and to discriminate allogenic from autogenic causes of incision, thereby gaining a greater sense of how steep, relatively small, ephemeral streams evolve. Dendrochronologic and dendrogeomorphic analyses of riparian cottonwoods provide an inexpensive, high-resolution dating method to constrain the time of incision, thereby permitting determination of the cause(s) of incision by evaluating environmental conditions prior to and at the onset of fluvial incision. An examination of seven small (10 to 100 km2) drainage basins indicated ephemeral streams have undergone a four-stage cycle of change within the past 200 years, comprising(i) an initial period of relative geomorphic stability with pedogenesis on the flood plain and low rates of lateral channel migration, (ii) a period of channel incision with subsequent widening of the flood plain through lateral corrasion along middle and upstream reaches, (iii) a concomitant period of aggradation along downstream reaches and, finally, (iv) a period of downstream incision. Dendrochronologic data and dendrogeomorphic relations indicate there have been three distinct periods of fluvial incision in the past 200 years. The first period of incision began in the 1860s and 1870s prior to the onset of European settlement and intensive grazing by domesticated cattle in the area. This period of incision occurred along the middle reaches of all seven of the streams examined and coincided with a severe, protracted drought, suggesting an allogenic cause. The second period

  5. Soil and water conservation strategies in Cape Verde (Cabo Verde in Portuguese) and their impacts on livelihoods: an overview from the Ribeira Seca Watershed

    NARCIS (Netherlands)

    Baptista, I.; Fleskens, L.; Ritsema, C.; Querido, A.; Ferreira, A.D.; Tavares, J.; Reis, E.A.; Gomes, S.; Varela, A.

    2015-01-01

    Severe land degradation has strongly affected both people’s livelihood and the environment in Cape Verde (Cabo Verde in Portuguese), a natural resource poor country. Despite the enormous investment in soil and water conservation measures (SWC or SLM), which are visible throughout the landscape, and

  6. Dusk Lighting of Layered Textures in 'Cape Verde'

    Science.gov (United States)

    2008-01-01

    Full-shade lighting in the late Martian afternoon helps make details visible in this view of the layered cliff face of the 'Cape Verde' promontory making up part of the rim of Victoria Crater in the Meridiani Planum region of equatorial Mars. NASA's Mars Exploration Rover Opportunity used its panoramic camera (Pancam) to shoot the dozens of individual images that have been combined into this mosaic. Opportunity was inside Victoria Crater and near the base of the cliff when it took these images on the 1,579th and 1,580th Martian days, or sols, of the mission (July 2 and 3, 2008). Photographing the promontory from this position in Victoria Crater presented challenges for the rover team. The geometry was such that Cape Verde was between the rover and the sun, which could cause a range of negative effects, from glinting off Pancam's dusty lenses to shadowing on the cliff face. The team's solution was to take the images for this mosaic just after the sun disappeared behind the crater rim, at about 5:30 p.m. local solar time. The atmosphere was still lit, but no direct sunlight was illuminating the wall of Cape Verde. The result is a high-resolution view of Cape Verde in relatively uniform diffuse sky lighting across the scene. Pancam used a clear filter for taking the images for this mosaic. Capturing images in low-light situations was one of the main motivations for including the clear filter among the camera's assortment of filters available for use. The face of Cape Verde is about 6 meters (20 feet) tall. Victoria Crater, at about 800 meters (one-half mile) wide, is the largest and deepest crater that Opportunity has visited. It sits more than 5 kilometers (almost 4 miles) away from Opportunity's Eagle Crater landing site. Researchers sent Opportunity into Victoria Crater to study the rock layers exposed inside. The textures seen in the rock layers of Cape Verde suggest that the exposed layers were originally deposited by wind.

  7. Laguna Verde after the extended power increase; Laguna Verde despues del aumento de potencia extendido

    Energy Technology Data Exchange (ETDEWEB)

    Herrera C, M. N.; Castaneda G, M. A.; Cardenas J, J. B.; Garcia de la C, F. M., E-mail: mitzi.herrera@cfe.gob.mx [Comision Federal de Electricidad, Central Nucleoelectrica Laguna Verde, Carretera Cardel-Nautla Km 42.5, Alto Lucero, Veracruz (Mexico)

    2012-10-15

    The project of extended power increase that was implemented in both units of the nuclear power plant of Laguna Verde beginning with the stage feasibility evaluation in nuclear side of the facilities, that is to say the affectation of the power increase in the equipment s, systems and components of the nuclear power plant; besides the feasibility evaluation a study cost-benefit for the rehabilitated and modernization of the equipment s, systems and components of Plant Balance was realized. Once considered technical and economically feasible the project began the engineering evaluations required to carry out the licensing of the new operation conditions, as well as beginning to the elaboration of the technical specifications purchase of the equipment s, systems and components of the Plant Balance. While on one hand was carried out the administration of the licensing of the extended power increase for other was carried out the necessary engineering to make the physical changes in the conventional side of the nuclear power plant. Once concluded the constructive stage beginning the final stage of the project, the starting-up tests, operation and performance of the Units under the new operation conditions. This work describes this last stage that contains the technical base, the realized tests and the obtained results. (Author)

  8. Talento verde: caracterización y búsqueda

    Directory of Open Access Journals (Sweden)

    María del Carmen Torres-Salazar

    2015-01-01

    Full Text Available Introducción: Los impactos del calentamiento global y el cambio climático son una preocupación en prácticamente todos los sectores de la sociedad, debido a las consecuencias que ya se perciben y que afectarán cada día más tanto a los sistemas naturales como a los creados por el hombre, generalmente de forma negativa. Para revertir estos efectos negativos y no continuar deteriorando el medio ambiente, es necesario un tipo especial de personas que sean capaces de tomar las decisiones adecuadas en los ámbitos en los que se desenvuelven. En esta investigación, estos seres humanos se denominan: “personas con talento verde”. El término talento verde no ha sido caracterizado y su uso es aun restringido. Esta investigación hace una caracterización del talento verde y propone una encuesta para detectar a las personas que cuentan con estas características. En este artículo, se reporta solo la validación de la encuesta. Es importante hacer notar que este trabajo forma parte de una investigación más amplia que busca conocer la relación entre directivos con talento verde y prácticas de cadena de suministro sustentable. Método: La caracterización del talento verde se realizó a través de la metodología de representaciones sociales, de la cual surgieron una serie de preguntas que buscan las características de talento verde en directivos de empresas y que forman parte de una encuesta de mayor cobertura que fue piloteada para su validación. La confiabilidad se midió a través del Alfa de Crombach y la validez por un Análisis Factorial. Resultados: Se encontraron nueve aspectos que caracterizan a las personas con talento verde, con las cuales se construyeron también nueve preguntas. Estas preguntas se hicieron a 25 directivos de empresas que participan en la Cámara de la Industria de la Transformación (CANACINTRA con el objetivo de validar el instrumento. El alfa de Crombrach obtenido fue del 0.948 y el análisis factorial indica

  9. IN and CCN Measurements on RV Polarstern and Cape Verde

    Science.gov (United States)

    Welti, André; Herenz, Paul; Henning, Silvia; Stratmann, Frank

    2016-04-01

    Two field campaigns, one situated on RV Polarstern (Oct. - Dec. 2015) and one on the Cape Verde islands (Jan. - Feb. 2016) measuring ice nuclei (IN) and cloud condensation nuclei (CCN) concentrations as a function of supersaturation and temperature are presented. The Polarstern cruise from Bremerhaven to Cape Town yields a cross section of IN and CCN concentrations from 54°N to 35°S and passes the Cape Verde Islands at 15°N. Measurements were conducted using the commercial CCNC and SPIN instruments from DMT. During both campaigns, a comprehensive set of aerosol characterization data including size distribution, optical properties and chemical information were measured in parallel. The ship based measurements provide a measure of variability in IN/CCN concentration with geographic position. As an example a clear influence on IN and CCN number concentration of the Saharan desert dust outflow between the Canary Islands and Cape Verde or the continental aerosol from Europe and South Africa was observed. The measurements on Cape Verde provide information on the temporal variability at a fixed position varying between clean marine and dust influenced conditions. Both datasets are related to auxiliary data of aerosol size distribution and chemical composition. The datasets are used to distinguish the influence of local sources and background concentration of IN/CCN. By combining of the geographically fix measurements with the geographical cross section, typical ranges of IN and CCN concentration are derived. The datasets will be part of the BACCHUS database thereby providing valuable input for future climate modeling activities.

  10. Brasil e Cabo Verde: duas margens do mesmo mar

    Directory of Open Access Journals (Sweden)

    Oliveira, Vera Lúcia de

    2010-01-01

    Full Text Available Fala-se, neste artigo, das relações entre Cabo Verde e Brasil, relações antigas, que derivam não só do fato dos dois países terem feito parte do antigo império colonial português, mas das muitas afinidades geográficas, culturais, linguísticas e literárias que aproximam estas duas nações irmãs

  11. Living With Parasites in Palo Verde National Park

    OpenAIRE

    Eben Kirksey

    2012-01-01

    Bruno Latour has tried to bring a parliamentary democracy to the domain of nature. Wading through the swamps of Palo Verde, a national park in the Guanacaste Province of Costa Rica, and wandering onto neighbouring agricultural lands, I failed to find a central place where people were speaking for nature. Departing from a failed attempt to speak for another species (the fringe-toed foam frog), this paper considers how diverging values and obligations shape relationships in multi-species worlds...

  12. Les enjeux écologiques de Palo Verde (Costa Rica

    Directory of Open Access Journals (Sweden)

    Bertrand LÉVY

    1992-09-01

    Full Text Available Près de Palo Verde a été créé un parc naturel. Un projet d’irrigation risque de perturber l’écologie de la région. Une carte de son écosystème a été établie par télédétection, pour évaluer l’impact d’un tel projet.

  13. Verde Macael: A Serpentinite Wrongly Referred to as a Marble

    Directory of Open Access Journals (Sweden)

    Santiago del Barrio

    2013-02-01

    Full Text Available Serpentinites are used in both exterior and interior locations, but not all serpentinites are equal: they vary in physical-mechanical behavior and are not all suitable for similar uses. The serpentinites most commonly used worldwide come from India, Pakistan or Egypt. Spain has traditionally quarried two ultramafic massifs, one in Galicia (Verde Pirineos and one in Andalucía (Verde Macael. Some of these quarries were small family-run businesses. In both cases, these rocks are commercially available as “green marble.” These serpentinites commonly have a high degree of carbonation, but the process does not always take place with the same intensity. Carbonate can act as a cementing agent of the other phases, increasing the mechanical strength parameters. As a result, an improvement in the strength conditions is achieved, but a misinterpretation of the suitability of the rock may occur because a perception among users that “green marble” is similar to geologically defined marble. This may lead to inappropriate applications as an ornamental stone. At a time of economic crisis in Europe, the natural stone sector is encouraged to invest in research to identify the best quality products that can compete profitably with those currently being imported from other countries. This paper provides a comparison of properties of the Verde Macael serpentinite with a true marble in the hope of contributing to improving the natural stone industrial sector.

  14. Living With Parasites in Palo Verde National Park

    Directory of Open Access Journals (Sweden)

    Eben Kirksey

    2012-11-01

    Full Text Available Bruno Latour has tried to bring a parliamentary democracy to the domain of nature. Wading through the swamps of Palo Verde, a national park in the Guanacaste Province of Costa Rica, and wandering onto neighbouring agricultural lands, I failed to find a central place where people were speaking for nature. Departing from a failed attempt to speak for another species (the fringe-toed foam frog, this paper considers how diverging values and obligations shape relationships in multi-species worlds. As spokespersons articulated competing visions of nature on the borderlands of Palo Verde, multiple social and ecological worlds went to war. The haunting specter of capital joined the fray—animating the movements of cattle, grasses with animal rhizomes, rice seeds, and flighty ducks across national borders and through fragmented landscapes. Amidst this warfare, the fringe-toed foam frog was just one tenacious parasite, a noisy agent eating at the table of another, which began to flourish in worlds designed with the well-being of others in mind. Cattails, charismatic birds, and a multitude of insects began interrupting human dreams and schemes. Final solutions to the problem of living with parasites failed in Palo Verde. Humans and parasites, who became para-selves of one another, maintained an abiding presence in the landscape.

  15. Arroyo Limay chico: un ejemplo de captura fluvial en la cuenca superior del Río Limay (SE de Neuquén

    Directory of Open Access Journals (Sweden)

    Emilio F. González Díaz

    2008-03-01

    Full Text Available Se describe un proceso de captura fluvial, por erosión retrocedente, del arroyo Limay Chico -afluente del río Limay- sobre el sector austral de las cabeceras de la cuenca de drenaje del arroyo Alicurá, tributaria a su vez del río Collón Cura. Se interpreta que la causal del fenómeno estuvo relacionada con las nuevas condiciones climáticas postglaciarias (más húmedas y la contemporánea profundización del troncal río Limay, morfológicamente expresada por modernas terrazas de erosión inferiores, las que fueran reconocidas en la zona de afluencia del arroyo Limay Chico, con anterioridad al llenado del embalse de Alicurá. Además, la captura fluvial y el consecuente desvío de los caudales de un tramo de las nacientes del arroyo Alicurá hacia la cuenca del Limay Chico, mostró condiciones o factores previos coadyuvantes: 1 la disposición topográfica inferior de la cuenca de éste último con respecto a la de Alicurá; 2 la mayor pendiente y la localización del valle del arroyo Limay Chico a lo largo de una zona de debilidad estructural y litológica representada por la falla Limay Chico, asistió la dinámica de la erosión fluvial retrógrada; 3 la disposición transversal de las cabeceras de la cuenca del arroyo Alicurá. Se han reconocido abras de viento e interpretado dos probables codos de captura. El consiguiente aumento de la descarga del arroyo Limay Chico, promovió en su cuenca un fenómeno local de rejuvenecimiento estático. También se acepta una estrecha relación entre el cambio climático postglaciario y la ocurrencia de los múltiples deslizamientos rotacionales observados a lo largo de la abrupta escarpa de falla generada por la falla Limay Chico, presumiéndose que la activa y coetánea erosión lateral del arroyo Limay Chico, contribuyó al proceso gravitacional. Estos deslizamientos, que se caracterizan por la coalescencia lateral de sus muescas de desprendimiento, han generado el distintivo e irregular paisaje

  16. Densidad del Mono aullador Alouatta seniculus (Linnaeus, 1766 Mammalia: primates en el arroyo coloso, Departamento de Sucre, Colombia

    Directory of Open Access Journals (Sweden)

    Fajardo Patiño Alirio

    1996-12-01

    Full Text Available Nueve manadas de Alouatta seniculus, fueron estudiadas a lo largo de tres meses y medio, entre Mayo y Agosto de 1983. Se tomaron en cuenta aspectos relativos al estado y densidad poblacional en el Arroyo Colosó, Departamento de Sucre. Se establece una relación de los datos obtenidos y procesados en este trabajo con los suministrados por otros autores en estudios similares con la misma especie y en diferentes lugares.Nine troops of Alouatta seniculus, were studied for a period of three and half months betwen May and August of 1983. Relevant facts of the condition and population density in the Colosó stream, located in Sucre Deparment, were taken. A relation is stablished among the facts obtained and processed in this investigation with facts provided by another authors in similar studies with the same specie in different locations.

  17. Herpetofauna de la Reserva Paleontológica del Arroyo Toropí, Bella Vista, Corrientes, Argentina

    Directory of Open Access Journals (Sweden)

    María del Rosario Ingaramo

    2015-05-01

    Full Text Available Los relevamientos de fauna silvestre son indispensables para conocer la riqueza de especies en lugares donde la diversidad biológica local aún se desconoce, o ha sido escasamente investigada. Con la finalidad de contribuir a la valorización de la naturaleza de la Reserva Paleontológica del Arroyo Toropí, y generar información útil para su aplicación en futuros planes de manejo, el presente trabajo tuvo como objetivo elaborar un inventario de las especies de anfibios y reptiles del Toropí, Bella Vista, (Corrientes, Argentina, y determinar los ambientes prioritarios para la conservación de la herpetofauna en este sitio. Para ello se realizaron 8 muestreos (2 por estación de diciembre de 2011 a noviembre de 2012. Se registraron en total 35 especies de herpetozoos distribuidas en 24 especies de anfibios y 11 de reptiles. Las lagunas temporarias y permanentes fueron los ambientes con mayor riqueza específica de anfibios, mientras que las barrancas y lomadas arenosas fueron los ambientes donde se registró la mayor cantidad de especies de reptiles. La riqueza específica de herpetofauna registrada para el Toropí, representa el 20% de la herpetofauna citada para la provincia de Corrientes. Las lagunas temporarias, permanentes, barrancas y lomadas arenosas serían los ambientes prioritarios para conservar debido a que fueron los ambientes en donde se registraron la mayor riqueza específica de anfibios y reptiles. Finalmente la información obtenida a partir de la realización de este estudio resulta una herramienta muy útil para ser usada por las administraciones públicas en futuros planes de manejo y conservación de la biodiversidad de la Reserva Paleontológica del Arroyo Toropí, (Corrientes, Argentina.

  18. Strategies for Post-Primary Education in Small Island Developing States (SIDS): Lessons from Cape Verde

    Science.gov (United States)

    Atchoarena, David; Da Graca, Patricia Dias; Marquez, Jose Manuel

    2008-01-01

    This article addresses the context and challenges of small island developing states, focusing particularly on Cape Verde. After a general discussion of the characteristics of small island developing states, several development challenges such as poverty, unemployment and migratory issues specific to Cape Verde are evoked. Despite a period of…

  19. Cape Verde. A Country Guide Series Report from the AACRAO-AID Project.

    Science.gov (United States)

    Sevigny, Joseph A.

    This report provides information on the education system of Cape Verde, and is designed to assist college admissions officers and registrars in the United States with the admission and placement of students from that country. The report contains general information on the geography, history, and people of Cape Verde, as well as more specific…

  20. Distribución de tierras raras en soluciones y coloides de un sistema natural de aguas ácidas (Arroyo del Val, Zaragoza)

    OpenAIRE

    López Julián, P. L.; Zamora, A.; Mandado, J.; Gimeno, M. J.; Tena, J. M.; Auqué, L. F.

    1993-01-01

    Acidic waters of the «Arroyo del Val» stream are naturally generated by oxidation of sulfide minerals dispersed in the sedimentary materials of the drainage basin. Mixing of this acidic stream with neutral-alkaline tributaries yields spectacular iron and aluminium rich flocculants that precipitate at the confluences. Previous analysis of rare earth element (REE) concentrations of sorne 0.1 I-tm-filtered water samples and colloids are shown. The shale-normalized REE patte...

  1. Laguna Verde BWRs operational experience: steady-state fuel performance

    International Nuclear Information System (INIS)

    The two BWR at Laguna Verde nuclear power station are finishing 21 and 15 years of continuous successful operation as of 2010. During Unit 1 and 2 commercial operations only Ge/GNF fuel designs have been employed; fuel lattice designs 8 x 8 and 10 x 10 were used at the reactor, with an original licensed thermal power (OLTP: 1931 MWt) and the reactor's first power up-rates of 5%. GNF fuel will be also used for the second EPU to reach 120% of OLTP in the near future. Thermal and gamma traversing in-core probes (Tip) are used for power monitoring purposes along with the Ge (now GNF-A) core monitoring system, 3-dimensional MonicoreTM. GNF-A has also participated by preparing the core management plan that is regularly fine-tuned in collaboration with Comision Federal de Electricidad (CFE owner of the Laguna Verde reactors). For determination of thermal margins and eigenvalue prediction, GNF-A employs the NRC-licensed steady-state core simulator PANAC11. Tip comparisons are routinely used to adapt power distributions for a better thermal margin calculation. Over the years, several challenges have appeared in the near and long term fuel management planning such as increasing cycle length, optimization of the thermal margins, rated power increase, etc. Each challenge has been successfully overcome via operational strategy, code improvements and better fuel designs. This paper summarizes Laguna Verde Unit 1 and 2 steady-state performance from initial commercial operation, with a discussion of the nuclear and thermal-hydraulic design features, as well as of the operational strategies that set and interesting benchmark for future fuel applications, code development and operation of the BWRs. (Author)

  2. Spatial modulation of the hydrological risk at Praia, Cape Verde

    Science.gov (United States)

    Lino Silva, José; Neves, Ana Cristina; Garrott Marques Negreiros, João

    2016-06-01

    Hydrology modeling became a relevant topic for the Cidade da Praia, Cabo Verde, Africa, due to negative impact risk to local population and its assets. The modeling via Geographical Information Systems (GIS) can help the decision-making process of space occupation and characterization for this type of risk. Under the municipalities of Praia, the phenomenon of flash flood is common, causing soil erosion and landslide. This constitutes a risk for the local habitat, particularly in districts with a lack of strong human infrastructures. To simulate, analyze and generate risk maps using GIS to help this county governance authorities for decision-making, thus, becomes the main aim of this article.

  3. Antineutrino flux from the Laguna Verde Nuclear Power Plant

    CERN Document Server

    Chavez-Estrada, Marisol

    2015-01-01

    We present a a calculation of the antineutrino flux produced by the reactors at the Laguna Verde Nuclear Power Plant in M\\'exico, based on the antineutrino spectra produced in the decay chains of the fission fragments of the main isotopes in the reactor core, and their fission rates, that have been calculated using the DRAGON simulation code. We also present an estimate of the number of expected events in a detector made of plastic scintillator with a mass of 1 ton, at 100 m from the reactor cores.

  4. Antineutrino Flux from the Laguna Verde Nuclear Power Plant

    Directory of Open Access Journals (Sweden)

    Marisol Chavez-Estrada

    2015-01-01

    Full Text Available We present a calculation of the antineutrino flux produced by the reactors at the Laguna Verde Nuclear Power Plant in México, based on the antineutrino spectra produced in the decay chains of the fission fragments of the main isotopes in the reactor core, and their fission rates, which have been calculated using the DRAGON simulation code. We also present an estimate of the number of expected events in a detector made of plastic scintillator with a mass of 1 ton, at 100 m from the reactor cores.

  5. A scientia sexualis de Cesário Verde

    OpenAIRE

    Ceia, Carlos

    1995-01-01

    pp. 77-101 Vamos falar de sexo, de certeza. Mas falaremos do discurso sexual e não dos problemas clínicos da prática sexual, de que se ocupa a sexologia. Vamos falar de sexualidade na poesia de Cesário Verde, o que significa que tal poesia contém uma prática discursiva fortemente centrada no sexo, nas suas imagens, nos seus rituais, nas seus caprichos. Embora este seja um tema negligenciado ou abordado superficialmente nos estudos que se fizeram até ao presente sobre a po...

  6. Antineutrino Flux from the Laguna Verde Nuclear Power Plant

    OpenAIRE

    Marisol Chavez-Estrada; Aguilar-Arevalo, Alexis A.

    2015-01-01

    We present a calculation of the antineutrino flux produced by the reactors at the Laguna Verde Nuclear Power Plant in M\\'exico, based on the antineutrino spectra produced in the decay chains of the fission fragments of the main isotopes in the reactor core, and their fission rates, that have been calculated using the DRAGON simulation code. We also present an estimate of the number of expected events in a detector made of plastic scintillator with a mass of 1 ton, at 100 m from the reactor co...

  7. Recursos hídricos y contabilidad verde

    OpenAIRE

    Amelia Pérez Zabaleta; Enrique San Martín González

    2005-01-01

    La gestión del agua requiere una información específica que permita afrontar correctamente su particularidad. La contabilidad ambiental es uno de los sistemas que proporciona esta información. La contabiliad verde o ambiental pretende suministrarnos el conocimiento necesario sobre las relaciones entre el hombre y la naturaleza que nos permita gestionar de forma más eficiente los recursos naturales, tanto en términos cuantitativos y cualitativos como monetarios, tanto en términos económicos co...

  8. La química verde y el desarrollo sustentable

    OpenAIRE

    Angélica Sierra; Lidia Meléndez; Armando Ramírez-Monroy; Maribel Arroyo

    2014-01-01

    La química es indispensable para asegurar que las siguientes generaciones de productos químicos, materiales y energía sean sustentables. La química es también esencial para limpiar el planeta de contaminantes ya existentes. En este artículo se presenta una breve revisión del desarrollo de la Química Verde, enfatizando sus principios, así como citando ejemplos específicos de compuestos usados en procesos no contaminantes sustentables y de apoyos otorgados para motivar el desarrollo de pr...

  9. Marketing verde e o alinhamento empresa-consumidor

    OpenAIRE

    Silva, Catarina Estefânia de Albuquerque Morais da

    2012-01-01

    Mestrado em Ciências Empresariais O crescente aumento da consciencialização ambiental tem levado consumidores e produtores a mudar o seu comportamento em relação ao ambiente, tendo sido o marketing a área de negócio onde esta mudança teve maior incidência. Uma das principais e actuais preocupações das organizações passa pelo desenvolvimento sustentável dos seus negócios, tendo surgido na área do marketing uma estratégia-chave para o cumprimento desse objectivo – o marketing verde. Nesta in...

  10. O consumidor verde: perfil e comportamento de compra

    OpenAIRE

    Afonso, Ana Carolina Baptista

    2010-01-01

    Mestrado em Marketing Como resultado da crescente preocupação com o ambiente a que se tem assistido, muitos consumidores têm vindo a questionar-se sobre os produtos que compram e a quem compram, levando a uma mudança de atitude e tendências ao nível do marketing. O tema desta investigação incide sobre uma área específica do marketing, denominada de marketing verde, mais concretamente, sobre as implicações que este conceito tem vindo a ter no comportamento do consumidor. Na presente investi...

  11. Assessing the Impacts of Climate and Land Use Change on Streamflow and Nutrient Loading in the Arroyo Colorado Watershed in Southern Texas

    Science.gov (United States)

    Osidele, O.; Sun, A.; Green, R.

    2011-12-01

    Based on results of the Second National Climate Assessment reported in 2009, the U.S. Global Change Research Program projects temperatures in southern Texas will increase 5 to 8° F by the end of the 21st century, with larger changes occurring under scenarios of higher greenhouse gas emissions. Temperature increases in summer are projected to be larger than in winter. Although drier conditions are expected in the region, sea-level rise, extreme rainfall events, and associated storm surges are projected to occur more frequently because of the likely increase in intensity of hurricanes and tropical storms in the Gulf of Mexico. The range of possible responses to climate change is attributable to a combination of characteristics at global, regional, and local scales. The risk of flooding and catastrophic infrastructure damage due to global climate phenomena has been incorporated into local climate adaptation plans for many low-lying areas and communities in the Gulf Coast region of southern Texas. However, because this region is dominated by irrigated agriculture and the population is projected to double by 2050, it is important to examine how climate change will affect water resources and environmental quality. The purpose of this study is to investigate the potential hydrologic and water quality impacts of projected climate change, land use change, and population change scenarios in the headwaters of the Arroyo Colorado. The results of this work will provide content for a web-based, collaborative geospatial decision support system being developed to support environmental management in the Arroyo Colorado Watershed. Presently, land use in the Arroyo Colorado Watershed is more than 50 percent agricultural and almost 25 percent residential with varying levels of urbanization. As a result, flow in the Arroyo Colorado is sustained primarily by discharge from municipal wastewater treatment facilities, irrigation return flows, and urban storm runoff. In this study

  12. Índices de calidad ambiental de aguas del Arroyo Caañabe mediante tests microbiológicos y ecotoxicológico

    Directory of Open Access Journals (Sweden)

    Tomás López Arias

    2016-06-01

    Full Text Available El Arroyo Caañabe, es un curso de agua que corre a través de los Departamentos Central y Paraguarí (República del Paraguay. Las descargas de origen agropecuario, urbano e industrial contaminan sus aguas. En este trabajo se evalúa la calidad del arroyo mediante sus características fisicoquímicas, ecotoxicológicas, microbiológicas y se la comparan con la legislación vigente. Se colectaron muestras en los meses de Julio y Setiembre del año 2014. Se estudiaron tres sitios denominados S1, ubicado en aguas arriba de la Ciudad de Carapegua; S2 en la intersección del arroyo con la Ruta 1, y S3, en la zona límite de las ciudades de Carapegua y Nueva Italia. Se realizaron ensayos de toxicidad aguda con Daphnia magna, Lactuca sativa, y alevines de Danio rerio; además de ensayos crónicos en Tetradesmus wisconsinenesis, D. rerio y Allium cepa. Se evaluaron los grupos y especies microbianos siguientes: aerobios mesófilos, enterobacterias, coliformes totales, coliformes fecales, E. coli, Pseudomona aeruginosa, mohos y levaduras; además se determinaron índices de calidad y de contaminación. Los resultados indican que las aguas del arroyo presentaron características de clase II y de clase III según el padrón establecido por la Secretaría del Ambiente del Paraguay. El índice de calidad de agua (ICA arrojó valores comprendidos entre 52 y 62 lo que otorga la clasificación de "regular"; mientras que el índice de contaminación trófica (ICOTRO presentó valores entre 0,12 y 0.26, indicando "eutrofización". Los recuentos de coliformes fueron superiores en el segundo muestreo, aunque dentro lo establecido por la norma. La presencia de P. aeruginosa en los tres puntos constituye un riesgo para la salud. Ensayos ecotoxicológicos agudos mostraron que las aguas presentan escasos efectos letales, no obstante los ensayos crónicos en A. cepa y el test de micronúcleos en D. rerio indican potenciales efectos citotóxicos y genotóxicos de las

  13. Imaginar Cabo Verde a partir da imagem do Brasil

    Directory of Open Access Journals (Sweden)

    Víctor Barros

    2010-06-01

    Full Text Available As representações discursivas constituem sempre construções históricas das épocas e dos actores que as animam em função de determinadas funcionalidades que lhes são demandadas a cumprir. Ensaia-se a partir deste título o inquérito analítico sobre a problemática da construção de alguns dos discursos intelectuais caboverdianos que, durante o Estado Novo salazarista, puseram em destaque uma determinada representação de Cabo Verde a partir da adopção e da interiorização imaginária da imagem do Brasil como paradigma imagético de consubstanciação da obra colonial portuguesa. Assim, o exercício reflexivo orienta-se no sentido de demonstrar as correlações entre a imaginação daquilo que se pensava em Cabo Verde (a partir dos postulados lusotropicalistas sobre o Brasil e, simultaneamente, deste como exemplo de que se poderia servir para se imaginar e representar a historicidade identitária caboverdiana, com todos os efeitos hermenêuticos perversos que uma comparação estribada na importação de modelos teóricos explicativos poderá suscitar.

  14. Geotourism, Medical Geology and local development: Cape Verde case study

    Science.gov (United States)

    Rocha, F.; Ferreira da Silva, E.

    2014-11-01

    Geotourism and Geoparks in particular are real opportunities to rural developments promoting the rate decline of unemployment and emigration through engaging the local communities in geopark activities and tourism marketing in the form of adventure tourism, ecotourism, rural tourism and health geotourism. Geotourism is closely linked with Medical Geology. The intake of minerals and chemical elements for food, water, soil (through geophagy) or dust can be accomplished by ingestion, inhalation or dermal absorption. Pelotherapy or “Mudtherapy” is the use of mud/clay for therapeutic applications, internal or external. Cape Verde archipelago is located in Atlantic ocean, 400 km westwards of Senegal coast. Geotourism is being developed, mainly focused on the development of a geopark in Fogo island huge caldera, but also trying to take advantage of their potentialities for Geomedecine. A cooperative program established between Cape Verde University (UCV) and Aveiro University (UA, Portugal) is under way, aiming, on a first stage, to identify Geotouristic potentialities and, on a second stage, to develop products. Geotourism is being developed, mainly focused on the development of a geopark in Fogo isl. huge caldera, but also trying to take advantage of their potentialities for Geomedecine.

  15. Gamma thermometer longevity test: Laguna Verde 2 instruments recent performance

    Energy Technology Data Exchange (ETDEWEB)

    Cuevas V, G. [Global Nuclear Fuel, Americas, 3901 Castle Hayne Road, Wilmington, North Carolina (United States); Avila N, A.; Calleros M, G., E-mail: Gabriel.Cuevas-Vivas@gnf.com [Comision Federal de Electricidad, Central Nucleoelectrica Laguna Verda, Carretera Veracruz-Nautla Km 42.5, Alto Lucero, Veracruz (Mexico)

    2013-10-15

    This paper is informative of the General Electric Hitachi and Global Nuclear Fuel - Americas are collaboration with Comision Federal de Electricidad in a longevity test of thermocouples as power monitoring devices. The test conclusions will serve for final engineering design in detailing the Automated Fixed In-core Probes for calibration of the Local Power Range Monitors (LPRMs) of the Economic Simplified Boiling Water Reactor. This paper introduces the collaboration description and some recent performance evaluation of the thermocouples that are sensitive to gamma radiation and are known generically as Gamma Thermometers (G T). The G Ts in Laguna Verde 2 are radially located inside six instrumentation tubes in the core and consist of seven thermocouples, four are aligned with the LPRM heights and three are axially located between LPRM heights. The Laguna Verde 2 G T test has become the longest test of thermocouples as power monitoring devices in a BWR industry history and confirms their reliability in terms of time-dependent small noise under steady state reactor conditions and good agreement against Traversing In-core Probes power measurements. (Author)

  16. ¿Qué tan verde es tu mercado?

    Directory of Open Access Journals (Sweden)

    Wilmar R. Olaya-González

    2011-01-01

    Full Text Available El mercado de lo verde y lo ecológico es una tendencia indiscutible en nuestro mundo globalizado, que busca de alguna manera resarcir el daño infringido sobre el medio ambiente. Más allá de simple altruismo, la ecología se ha convertido en una moda, de la cual unos y otros toman ventaja a su mejor acomodo, haciendo del mercado de productos y servicios su tribuna; eco-diseño, planes de responsabilidad social y ambiental, campañas por el reciclaje y consumo de productos "más amigables" con el medio ambiente hacen parte del panorama que se intenta describir en esta reseña. Por medio de un estudio de caso, se hará énfasis en cómo la comunicación asume un papel crucial en la verdadera apropiación del concepto de "consumidor verde" y "consumidor responsable", de manera que la propuesta transversal de las tic se convierta en una herramienta no solo tecnológica, sino también de empoderamiento del papel que la sociedad puede representar en el cuidado de los recursos naturales.

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

    Directory of Open Access Journals (Sweden)

    Celia Chávez-Mendoza

    2015-07-01

    Full Text Available The aim of this work was to evaluate the metals content in surface water of Arroyo San Ignacio (San Ignacio stream and its main tributary, which are located in a priority ecological region of Mexico. For this study, these streams were divided in three sampling zones establishing thirty two sampling sites. Al, As, B, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Se, Si and Zn were measured. Some physicochemical parameters were also evaluated. Results indicated significant difference (P≤0.05 in pH, electrical conductivity, total solids, Ca, K, Na, and Mg levels for the three zones but no differences in heavy metals contents were found. Results were compared with Mexican and international standards and showed that seven metals (Al, Fe, Ni, Mn, Cr, Pb and Cd exceeded drinking water standards. This pollution is mainly due to increased anthropogenic activities in the region and will likely worsen in the future due to unsustainable practice of discharging wastes into the streams.

  18. Ciudad y naturaleza: elementos para una genealogía de lo verde en la ciudad

    OpenAIRE

    Rubio Díaz, Alfredo

    1992-01-01

    La reciente publicación por las Comunidades Europeas del "Libro Verde sobre el Medio Ambiente Urbano" (1990) pone de manifiesto la necesidad de abordar "la cuestión verde" en la ciudad desde perspectivas integradoras. El presente artículo realiza una genealogía de la idea de "lo verde" en la ciudad a través de algunas de las prácticas iniciales y del estudio de aportaciones sustanciales como las realizadas por Howard, T. Garnier, Le Corbusier y el "grupo postmoderno", en la búsqueda de defini...

  19. O marketing verde e a sustentabilidade: caso de estudo: Bi-Silque, SGPS, S.A.

    OpenAIRE

    Lima, Mónica Azevedo de

    2014-01-01

    O conceito sustentabilidade passou a ser um tema comum no dia-a-dia das empresas. Tendo em conta que a sustentabilidade é constituída por três dimensões, social, económica e ambiental, aquele a que o presente estudo dá maior relevância é a dimensão ambiental. O marketing verde surgiu com o aparecimento das preocupações e consciência ambientais. A necessidade de proceder-se a uma comunicação correta e clara dos produtos verdes fez emergir este novo paradigma no marketing. A economia verde e a ...

  20. Did the continent and sea have different temperatures in the northern Antarctic Peninsula during the Middle Eocene? Eran diferentes las temperaturas continentales y marinas durante el Eoceno Medio en el norte de la Península Antártica?

    Directory of Open Access Journals (Sweden)

    A.L. Cione

    2007-12-01

    Full Text Available The Seymour Island beds include a remarkable representation of the continental flora and fauna and marine fauna of Eocene in southern high latitudes. We suggest that, at least during the deposition of the best sampled unit, the Cucullaea I Allomember of the La Meseta Alloformation in the Seymour Island area, a cold temperate terrestrial environment co-existed with relatively warmer temperatures in the adjacent shallow shelf sea. This is suggested by the fish and invertebrate fauna and could have been due to the presence of warmer waters of a current reaching the region from the north. The temperature drop proposed for the time of deposition of the uppermost part of the La Meseta Formation (Submeseta Allomember appears to correspond to the global drop of the end of the Eocene and beginning of Oligocene and not to the establishment of the Antarctic Circumpolar Current.Los estratos de la Isla Seymour incluyen una notable representación de flora y fauna continentales y fauna marina del Eoceno de altas latitudes australes. En este trabajo sugerimos que, un ambiente terrestre templado frío coexistió al menos durante la depositación de la unidad mejor muestreada, el Alomiembro Cucullaea I de la Aloformación La Meseta en el área de la Isla Seymour, con un ambiente marino costero y somero con temperaturas más cálidas. Esto es sugerido por la fauna de peces e invertebrados y pudo deberse a la presencia de una corriente de aguas cálidas que alcanzó el norte de la península. La caída de temperatura propuesta para el momento de depositación de la parte más superior de la Formación La Meseta (Alomiembro Submeseta parece corresponder con la caída global a fines del Eoceno y comienzos del Oligoceno y no al establecimiento de la corriente circumpolar antártica.

  1. New species of mayflies (Ephemeroptera) from Cape Verde.

    Science.gov (United States)

    Soldán, Tomáš; Bojková, Jindřiška

    2015-01-01

    To date, no mayflies have been described from Cape Verde, an archipelago of volcanic islands in the Atlantic Ocean. Based on the material collected on two islands, Santo Antão and Santiago, two species of the genus Cloeon Leach, 1815 (Ephemeroptera: Baetidae) are described based on larvae and imagines. Cloeon morna sp. n., collected in Santo Antão, and C. sidadi sp. n., collected in Santiago, have 3-segmented maxillary palps and tapered labial palps of larvae. The new species can be distinguished from each other and from other West-African species of the genus mainly according to details of the lateral spines on larval abdominal segments and characteristic colourations of vitta and terga in female imagines and colours of male turbinate eyes. Affinities to the West African species of the genus are discussed. PMID:25781802

  2. Terminologia do direito processual civil em Cabo Verde

    OpenAIRE

    Graça, Evódia Gomes da

    2010-01-01

    O presente trabalho tem como objectivo prioritário propor, a criação de uma base de dados terminológica e textual trilingue – Português – Inglês – Francês no domínio do direito processual civil em Cabo Verde. No entanto, tencionamos no futuro introduzir o caboverdiano como uma quarta língua na base de dados. Assim, os termos e as colocações terminológicas que iremos armazenar estarão na base da preparação dos recursos linguísticos e terminológicos para o ensino do português jur...

  3. Laguna Verde simulator: A new TRAC-RT based application

    International Nuclear Information System (INIS)

    In a partnership with GSE Systems, TECNATOM is developing a full scope training simulator for Laguna Verde Unit 2 (LV2). The simulator design is based upon the current 'state-of-the art technology' regarding the simulation platform, instructor station, visualization tools, advanced thermalhydraulics and neutronics models, I/O systems and automated model building technology. When completed, LV2 simulator will achieve a remarkable level of modeling fidelity by using TECNATOM's TRAC-RT advanced thermalhydraulic code for the reactor coolant and main steam systems, and NEMO neutronic model for the reactor core calculations. These models have been utilized up to date for the development or upgrading of nine NPP simulators in Spain and abroad, with more than 8000 hours of training sessions, and have developed an excellent reputation for its robustness and high fidelity. (author)

  4. Radiological protection in Laguna Verde, the challenge of being better

    International Nuclear Information System (INIS)

    The operation of the nuclear power plants in the last decade is based on the application of standard directed towards the excellence. The nuclear power plant of Laguna Verde (CNLV), is not the exception and in the 18 years of commercial operation, the safety culture has matured in the personnel. Standard and political implemented like in the control of dosimeter alarms, equipment condition, meetings pre-work, the practice of protection to the systems and the fuel, as well as the order and the cleaning have distinguished to the CNLV with other power stations. The sense of property of the personnel towards its work is fundamental for the achievement of results. It is reason for the present work to show since it has been gotten to obtain results directed to the excellence in the activities or of normal operation and recharge, where the security is the principle priority. (Author)

  5. Control of dengue disease: a case study in Cape Verde

    CERN Document Server

    Rodrigues, Helena Sofia; Torres, Delfim F M; Zinober, Alan

    2010-01-01

    A model for the transmission of dengue disease is presented. It consists of eight mutually-exclusive compartments representing the human and vector dynamics. It also includes a control parameter (adulticide spray) in order to combat the mosquito. The model presents three possible equilibria: two disease-free equilibria (DFE) --- where humans, with or without mosquitoes, live without the disease --- and another endemic equilibrium (EE). In the literature it has been proved that a DFE is locally asymptotically stable, whenever a certain epidemiological threshold, known as the basic reproduction number, is less than one. We show that if a minimum level of insecticide is applied, then it is possible to maintain the basic reproduction number below unity. A case study, using data of the outbreak that occured in 2009 in Cape Verde, is presented.

  6. Level-2 IPE for the Laguna Verde NPS

    International Nuclear Information System (INIS)

    In response to generic letter GL 88-20, Comision Federal de Electricidad and Instituto de Investigaciones Electricas have jointly developed the individual plant examination (IPE) for the Laguna Verde nuclear power station unit I (LVNPS). This plant is a 675-MW(electric) boiling water reactor (BWR/5) with a reinforced concrete Mark-II containment. The approach used to fulfill the IPE requirements was to make a level-1 probabilistic risk assessment (IPE level 1) plus a containment performance analysis including the behavior and release of the fission products to the environment (IPE level 2). This paper describes the level-2 portion of the LVNPS IPE, paying special attention to both some improvements to the traditional analytical methods and to the main results

  7. Search for neutrino oscillations at the palo verde nuclear reactors

    Science.gov (United States)

    Boehm; Busenitz; Cook; Gratta; Henrikson; Kornis; Lawrence; Lee; McKinny; Miller; Novikov; Piepke; Ritchie; Tracy; Vogel; Wang; Wolf

    2000-04-24

    We report on the initial results from a measurement of the antineutrino flux and spectrum at a distance of about 800 m from the three reactors of the Palo Verde Nuclear Generating Station using a segmented gadolinium-loaded scintillation detector. We find that the antineutrino flux agrees with that predicted in the absence of oscillations excluding at 90% C.L. nu;(e)-nu;(x) oscillations with Deltam(2)>1.12x10(-3) eV(2) for maximal mixing and sin (2)2straight theta>0.21 for large Deltam(2). Our results support the conclusion that the atmospheric neutrino oscillations observed by Super-Kamiokande do not involve nu(e).

  8. Estrategias de mercadeo verde utilizadas por empresas a nivel mundial

    Directory of Open Access Journals (Sweden)

    Castellano, Susie

    2015-09-01

    Full Text Available La preocupación por el medio ambiente se ha convertido en una temática que inquieta a toda la colectividad actual, desde los más pequeños hasta los más grandes, desde la pequeña empresa hasta la gran industria. Sumado a esto, el auge de normativas ambientales que establecen regulaciones al empresario, los obliga a tener una mayor conciencia de los daños que pueden causar sus acciones al medio ambiente. Es por esto, que paulatinamente ha comenzado, por parte de las empresas, la adopción de estrategias en el área de mercadeo verde que les permita comercializar sus productos y servicios de forma que los mismos sean ambientalmente compatibles. En el presente trabajo, se abordaron las diferentes estrategias que han venido asumiendo empresas de diferente índole para hacer frente a tan importante filosofía en el ámbito mundial. Para tal fin, se hizo la revisión y contrastación de artículos escritos en el marco del mercadeo verde por Rivera y Molero (2006, Chamorro (2001, Samper y Echeverri (2008 principalmente, encontrándose que cada vez son más las empresas que se suman a esta forma de mercadear sus procesos y productos y más los consumidores que anteponen criterios ecológicos ante variables de otra índole, modificando sus hábitos de consumo.

  9. Governança ambiental e economia verde

    Directory of Open Access Journals (Sweden)

    Pedro Roberto Jacobi

    2012-06-01

    Full Text Available A Conferência Rio+20 mobiliza a comunidade global em 2012 para participar de um desafiador debate sobre a realidade ambiental global e modus operandi existente quanto à temática ampla e genérica do desenvolvimento e do ambiente. Um dos temas estruturantes desta reunião é a transição para uma economia verde no contexto do desenvolvimento sustentável e da erradicação da pobreza. O tema da Governança Ambiental Global um dos carros chefe do debate na Rio+20, no intuito de promover e acelerar a transição rumo a sociedades sustentáveis, configura a construção muitas vezes, de forma controversa, das condições para a definição de novos espaços institucionais e processos decisórios compartilhados. Este artigo propõe aos leitores uma reflexão para discutir que tipo de sustentabilidade está por trás da economia verde, a sua aplicabilidade e o que deva ser priorizada na discussão de governança ambiental. Isto se explica na medida em que existe a necessidade de mudar os mecanismos de utilização dos recursos, profundamente injustos, e que impedem avanços nos processos decisórios, pois as decisões de poucos tem configurado uma lógica perversa de expropriação de recursos naturais e não resolução da exclusão social.

  10. New species of Rissoidae from the Cape Verde Islands (Mollusca: Gastropoda) Part 1

    NARCIS (Netherlands)

    Moolenbeek, R.G.; Rolán, E.

    1988-01-01

    Sediment samples collected at the Cape Verde Islands contained many interesting micromolluscs. Amongst them, four new species of the family Rissoidae ( Alvania peli, A. nicolauensis, A. stocki and A. planciusi).

  11. The role of eclogite in the mantle heterogeneity at Cape Verde

    DEFF Research Database (Denmark)

    Barker, Abigail Katrine; Holm, Paul Martin; Troll, Valentin R.

    2014-01-01

    The Cape Verde hotspot, like many other Ocean Island Basalt provinces, demonstrates isotopic heterogeneity on a 100–200 km scale. The heterogeneity is represented by the appearance of an EM1-like component at several of the southern islands and with a HIMU-like component present throughout...... have been limited. We apply the minor elements in olivine approach (Sobolev et al. in Nature 434:590–597, 2005; Science, doi:10.1126/science.1138113, 2007), to determine and quantify the contributions of peridotite, pyroxenite and eclogite melts to the mantle heterogeneity observed at Cape Verde. Cores...... of olivine phenocrysts of the Cape Verde volcanics have low Mn/FeO and low Ni*FeO/MgO that deviate from the negative trend of the global array. The global array is defined by mixing between peridotite and pyroxenite, whereas the Cape Verde volcanics indicate contribution of an additional eclogite source...

  12. Comparison of three/four equations reactor core models in the Laguna Verde simulator

    International Nuclear Information System (INIS)

    This work presents results of the simulation of three transients in the full scope Laguna Verde nuclear power plant simulator. Three and four equations reactor core models were used, and simulation results are compared with manufacturer's predictions. (Author)

  13. Recruitment, selection and training of a sensory panel for Vinho Verde organoleptic evaluation

    OpenAIRE

    Marques, Catarina; Correia, Elisete; Vilela, Alice

    2016-01-01

    The white wines of Vinho verde region are characterized by high acidity and high alcohol, being appreciated by their aromatic potential, mainly fruity and floral. Among the set of recommended varieties for Vinho Verde production, there are varieties like Alvarinho, Arinto and Loureiro, which lead to great quality varietal wines and unique aromatic characteristics. Through sensory analysis, we can study the aromatic potential of these three varieties. This science allows us to evaluate the cha...

  14. What is known about cookiecutter shark (Isistius spp.) interactions with cetaceans in Cape Verde seas?

    OpenAIRE

    Wenzel, Frederick W.; López Suárez, Pedro

    2015-01-01

    In the North Atlantic, the waters surrounding the Cape Verde Islands are a "potential hot spot" for cookiecutter shark Isistius spp. interactions with cetaceans. These occurrences were recently identified by the improved efforts of researchers to document cetacean strandings in the Cape Verde archipelago, as well as by the photo identification efforts of live whales and dolphins. The documentation of individual and mass stranding events confirmed that cookiecutter shark interactions with ceta...

  15. Palo Verde Generating Station, Units 4 and 5. License application, general information

    International Nuclear Information System (INIS)

    A license application for two more Palo Verde reactors, Units 4 and 5, is presented. The two PWR reactors have a nominal net generating power each of 1,270 MW(e). Containments are steel-lined prestressed cylindrical structures with hemispherical domes. The reactors are replicas of Palo Verde 1, 2 and 3 (see DOCKETS 50528, 50529 and 50530) using the standard Combustion Engineering System 80 (see DOCKET-STN-50470)

  16. Optimizing soil and water management in dryland farming systems in Cabo Verde

    OpenAIRE

    Santos Baptista Costa, Dos, I.

    2016-01-01

     “Optimizing Soil and Water Management in Dryland Farming Systems in Cabo Verde” Isaurinda Baptista Summary Soil and land degradation poses a great challenge for sustainable development worldwide and, in Cabo Verde, has strongly affected both people’s livelihood and the environment. Dryland food production in Cabo Verde faces steep slopes, inadequate practices, irregular intense rain, recurrent droughts, high runoff rates, severe soil erosion and declining soil fertilit...

  17. Radiological protection in Laguna Verde, the challenge of being better; Proteccion radiologica en Laguna Verde, el reto de ser mejores

    Energy Technology Data Exchange (ETDEWEB)

    Serrano R, H. [CFE, Central Laguna Verde, Proteccion Radiologica, Km 42.5 Carretera Cardel-Nautla, Veracruz (Mexico)]. e-mail: hsr98581@cfe.gob.mx

    2008-07-01

    The operation of the nuclear power plants in the last decade is based on the application of standard directed towards the excellence. The nuclear power plant of Laguna Verde (CNLV), is not the exception and in the 18 years of commercial operation, the safety culture has matured in the personnel. Standard and political implemented like in the control of dosimeter alarms, equipment condition, meetings pre-work, the practice of protection to the systems and the fuel, as well as the order and the cleaning have distinguished to the CNLV with other power stations. The sense of property of the personnel towards its work is fundamental for the achievement of results. It is reason for the present work to show since it has been gotten to obtain results directed to the excellence in the activities or of normal operation and recharge, where the security is the principle priority. (Author)

  18. Estado trófico de arroyos de la cuenca de Paso Severino mediante la utilización del índice biótico TSI-BI

    Directory of Open Access Journals (Sweden)

    Juan Pablo Pacheco

    2013-01-01

    Full Text Available Los macroinvertebrados acuáticos responden a las características de su ambiente reflejando las alteraciones en el mismo. Por ello, son frecuentemente utilizados como indicadores biológicos en estudios de calidad de agua y monitoreo ambiental. El índice de estado trófico TSI-BI creado para la cuenca del río Santa Lucía, que incluye la cuenca de estudio, permite conocer el estado trófico de los arroyos mediante su composición de macroinvertebrados acuáticos. El objetivo de este trabajo es evaluar el estado trófico de los arroyos de la cuenca del embalse Paso Severino a través de la comunidad de macroinvertebrados mediante el índice TSI-BI. El embalse es utilizado como fuente de agua potable para la zona sur densamente poblada del país. La zona ha tenido un importante desarrollo de la actividad lechera en las últimas décadas. Se seleccionaron 10 subcuencas pertenecientes a arroyos de órdenes 2-4 tomándose muestras estacionales (2009-2010 de macroinvertebrados con red de mano de 500 µm. Se analizaron la abundancia relativa y composición de los macroinvertebrados, estimándose el estado trófico de los arroyos mediante el índice TSI-BI. Todos los arroyos estudiados presentaron niveles altos a muy altos de contaminación orgánica situándose en los rangos eutrófico-hipereutrófico. Los arroyos de mayor estado trófico (hipereutróficos presentaron una comunidad dominada por Hirudinea y Crustacea, mientras que en los de menor nivel trófico se observó una mayor abundancia de Ephemeroptera y presencia de Trichoptera. Los altos niveles tróficos de los arroyos indicarían la existencia de impacto por nutrientes, que llevó a cambios en la comunidad de macroinvertebrados hacia el dominio de organismos tolerantes a la contaminación. Dado los altos niveles tróficos de estos arroyos, y considerando que son afluentes del embalse de Paso Severino, el índice empleado y los resultados obtenidos constituyen una importante herramienta de

  19. Procesis de formación y efectos tafonómicos en entierros humanos: el caso del sitio Arroyo Seco 2 en la región pampeana, Argentina

    OpenAIRE

    González, Mariela Edith

    2014-01-01

    En este trabajo se presentan parte de los resultados obtenidos del análisis tafonómico sobre los entierros humanos del sitio arqueológico Arroyo Seco 2 (partido de Tres Arroyos, provincia de Buenos Aires). Se destaca la pérdida de unidades óseas en frecuencias elevadas, con una tendencia a la subrepresentación de huesos de pequeño tamaño. Dada la modalidad primaria de inhumación de la mayoría de los individuos, se descarta que la manipulación antrópica intencional haya ocasionado estos faltan...

  20. Potential-Field and Seismic Reflection/Refraction Studies of the Eagle Rock and Raymond Faults in Arroyo Seco, Los Angeles County, California

    Science.gov (United States)

    Scheirer, D. S.; Rymer, M. J.; Catchings, R. D.; Goldman, M.; Fuis, G. S.

    2010-12-01

    In August 2007, we acquired high-resolution gravity and seismic reflection and refraction data across the Eagle Rock and Raymond faults in the Arroyo Seco, located in Pasadena and South Pasadena, California. The studies were conducted to aid in understanding the seismic hazards of these faults in this urban setting, specifically to detect and determine the location of all faults passing through the area and to characterize their dip and possible structural connections. Gravity data were collected along a single ~3-km-long profile, with stations spaced every 25-m close to the fault traces and at greater intervals away from the fault traces. Gravity station elevations from Real-Time Kinematic GPS solutions, along with careful accounting for the gravity effects of the adjacent concrete drainage channel and of the walls of the arroyo, allow for the calculation of gravity anomalies that reflect sub-surface density contrasts across the Eagle Rock and Raymond faults. Seismic reflection and refraction data, including both P-wave and S-wave records, were collected along two profiles, a northern one crossing the Eagle Rock fault with a length of 1200 m, and a southern one crossing the Raymond fault with a length of 450 m. The seismic profiles coincided with the longer gravity profile along the floor of the Arroyo Seco. Seismic sources included Betsy-Seisgun shots, accelerated weight drops, and repeated sledge hammer impacts, and receivers were geophones spaced at a 5-m interval. S-waves were generated and recorded at a subset of sites on each of the seismic lines. Seismic reflection and refraction images indicate that both the Eagle Rock and Raymond faults are comprised of multiple, steeply-dipping fault strands. P- and S-wave seismic tomography of the uppermost 50-100 m show velocity variations that can be converted to likely density variations, which can in turn be subtracted from the density variation needed by the gravity anomaly analysis. This process of stripping off

  1. Expansión urbana e instrumentos de regulación de cuencas hídricas : Caso Arroyo “El pescado”

    OpenAIRE

    Dorsi, Luisina; Ríos, Licia; Lancioni, Alejandro

    2015-01-01

    La ponencia presenta avances del marco teórico-metodológico construido durante el avance de una beca de entrenamiento en la Investigación que pretende estudiar las diferentes relaciones entre los procesos recientes de crecimiento urbano y los instrumentos de protección de cuencas hídricas, en particular en la cuenca del arroyo El Pescado, declarada como “Paisaje Protegido” en el año 2005 por la Ley Provincial N° 12.247. Los principales interrogantes que conducen la investigación son: ¿Cuál es...

  2. Movilidad y utilización del ambiente en poblaciones cazadoras-recolectoras: la cuenca del arroyo Chasicó como caso de estudio

    OpenAIRE

    Catella, Luciana

    2014-01-01

    En esta tesis se presentan los resultados de una investigación arqueológica realizada en la cuenca del arroyo Chasicó, un área de aproximadamente 3800 km2, localizada en el sector sur de la denominada Área Ecotonal Húmedo-Seca Pampeana (AEHSP), más precisamente en la zona de transición entre las regiones Pampeana y Patagónica, abarcando tanto ambientes de transición, como ambientes con características propias de ambas regiones. Dichas investigaciones estuvieron orientadas a aportar informac...

  3. Aspectos geológicos y geotécnicos preliminares de la fundación de la presa del Arroyo Blanco, Tandil

    OpenAIRE

    Giaconi, Luis Mario; Calvetty Amboni, Boris; Giaconi, Mario Nicolás

    2012-01-01

    El presente resumen trata sobre los aspectos geológicos y geotécnicos preliminares de la fundación de la presa A° Blanco ubicada al sur de la Ciudad de Tandil, Provincia de Buenos Aires. El propósito de la presa es contener y regular las crecientes torrenciales que recurrentemente provocan anegamientos en la ciudad ubicada aguas abajo. El área de proyecto comprende la cuenca hidrográfica del arroyo que desemboca precisamente en el denominado entubado del A° Blanco, desagüe pluvial subterráneo...

  4. Design optimization of the Laguna Verde nuclear power station fuel recharge; Optimacion del diseno de recargas de combustible para la Central Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Cortes Campos, Carlos Cristobal [Instituto de Investigaciones Electricas, Cuernavaca (Mexico); Montes Tadeo, Jose Luis [Instituto Nacional de Investigaciones Nucleares (ININ), Salazar (Mexico)

    1991-12-31

    It is described, in general terms, the procedure that is followed to accomplish the optimization of the recharge design, and an example is shown where this procedure was applied for the analysis of the type BWR reactor of Unit No. 1 of the Laguna Verde Nuclear Power Station. [Espanol] Se describe en terminos generales el procedimiento que se sigue para realizar la optimacion del diseno de recargas, y se muestra un ejemplo en el que se utilizo dicho procedimiento para el analisis del reactor tipo BWR de la unidad 1, de la Central Laguna Verde (CLV).

  5. Una verdadera "isla en el nuevo sur". Las donaciones condicionadas en el arroyo Azul durante el rosismo

    Directory of Open Access Journals (Sweden)

    Sol Lanteri

    2007-01-01

    Full Text Available En el marco del estudio de la política de tierras fiscales implementada por el gobierno de Rosas en la campaña de Buenos Aires, en el presente trabajo nos proponemos enfocar la atención en la modalidad de las donaciones condicionadas, que sólo se hicieron efectivas en un área de la frontera sur, el arroyo Azul, a partir de 1832. De tal forma, comenzaremos estableciendo las particularidades que presentó su proceso colonizador, para luego analizar el impacto local que tuvo la entrega de predios estatales durante el período 1820-1860, con el objeto de establecer con mayor precisión el peso de las donaciones comparado con otras formas de otorgamiento en la ocupación del espacio y en la estructura de la tenencia del recurso en el lugar. Asimismo, en un último apartado estableceremos las características centrales que manifestaron las transacciones entre particulares, para lograr una mayor definición de los procesos abordados.In the context of the study of the policy of fiscal lands implemented by Rosas government in Buenos Aires countryside, this work focuses on the modality known as "conditioned donations", that since 1832 became effective only in an area of the south frontier, the Azul stream. So that, we begin establishing the particularities that the settlement process presented, and then we analyze the local impact that the cessions of fiscal lands had during the period 1820- 1860, in order to find out with more precision the importance of donations compared with other grant forms in space occupation and in the structure of the holding of the resource. Finally, in a last section we establish the central characteristics of transactions among private hands, to attain a more accurate definition of the processes involved.

  6. Neural network prediction of carbonate lithofacies from well logs, Big Bow and Sand Arroyo Creek fields, Southwest Kansas

    Science.gov (United States)

    Qi, L.; Carr, T.R.

    2006-01-01

    In the Hugoton Embayment of southwestern Kansas, St. Louis Limestone reservoirs have relatively low recovery efficiencies, attributed to the heterogeneous nature of the oolitic deposits. This study establishes quantitative relationships between digital well logs and core description data, and applies these relationships in a probabilistic sense to predict lithofacies in 90 uncored wells across the Big Bow and Sand Arroyo Creek fields. In 10 wells, a single hidden-layer neural network based on digital well logs and core described lithofacies of the limestone depositional texture was used to train and establish a non-linear relationship between lithofacies assignments from detailed core descriptions and selected log curves. Neural network models were optimized by selecting six predictor variables and automated cross-validation with neural network parameters and then used to predict lithofacies on the whole data set of the 2023 half-foot intervals from the 10 cored wells with the selected network size of 35 and a damping parameter of 0.01. Predicted lithofacies results compared to actual lithofacies displays absolute accuracies of 70.37-90.82%. Incorporating adjoining lithofacies, within-one lithofacies improves accuracy slightly (93.72%). Digital logs from uncored wells were batch processed to predict lithofacies and probabilities related to each lithofacies at half-foot resolution corresponding to log units. The results were used to construct interpolated cross-sections and useful depositional patterns of St. Louis lithofacies were illustrated, e.g., the concentration of oolitic deposits (including lithofacies 5 and 6) along local highs and the relative dominance of quartz-rich carbonate grainstone (lithofacies 1) in the zones A and B of the St. Louis Limestone. Neural network techniques are applicable to other complex reservoirs, in which facies geometry and distribution are the key factors controlling heterogeneity and distribution of rock properties. Future work

  7. Chemometric Characterization of Alembic and Industrial Sugar Cane Spirits from Cape Verde and Ceará, Brazil

    OpenAIRE

    Pereira, Regina F. R.; Vidal, Carla B.; de Lima, Ari C. A.; Melo, Diego Q.; Allan N. S. Dantas; Lopes, Gisele S.; Ronaldo F. do Nascimento; Gomes, Clerton L.; Maria Nataniela da Silva

    2012-01-01

    Sugar cane spirits are some of the most popular alcoholic beverages consumed in Cape Verde. The sugar cane spirit industry in Cape Verde is based mainly on archaic practices that operate without supervision and without efficient control of the production process. The objective of this work was to evaluate samples of industrial and alembic sugar cane spirits from Cape Verde and Ceará, Brazil using principal component analysis. Thirty-two samples of spirits were analyzed, twenty from regions of...

  8. From introduced American weed to Cape Verde Islands endemic: the case of Solanum rigidum Lam. (Solanaceae, Solanum subgenus Leptostemonum)

    OpenAIRE

    Sandra Knapp; Maria Vorontsova

    2013-01-01

    Abstract A Solanum species long considered an American introduction to the Cape Verde Islands off the west coast of Africa is identified as Solanum rigidum , a member of the Eggplant clade of Old World spiny solanums ( Solanum subgenus Leptostemonum ) and is probably endemic to the Cape Verde Islands. Collections of this species from the Caribbean are likely to have been introduced from the Cape Verde Islands on slave ships. We discuss the complex nomenclatural history of this plant and provi...

  9. Chuva de sementes em remanescentes florestais de Campo Verde, MT

    Directory of Open Access Journals (Sweden)

    William Pietro-Souza

    2014-08-01

    Full Text Available O objetivo deste trabalho consistiu em avaliar sazonalmente a produção de sementes provenientes de fragmentos florestais presentes na zona rural de Campo Verde, MT. Essa caracterização ocorreu em termos de produção de sementes e riqueza de espécies vegetais. Foram selecionados três fragmentos florestais caracterizados como Floresta Estacional Semidecidual. Em cada fragmento, cinco coletores foram instalados e confeccionados com canos de PVC (1 m²; malha de náilon de 0,001 m e 0,15 m de profundidade do bojo. O material foi coletado mensalmente, cujas sementes foram quantificadas e separadas conforme a síndrome de dispersão, etapa sucessional e forma de vida. Houve a determinação da densidade, frequência absoluta, índice de diversidade e equitabilidade. Ao todo, foram obtidas 3.622 sementes, pertencentes a 74 táxons. Maiores densidades de sementes foram observadas durante os meses de setembro, outubro e novembro. As lianas Gouania sp., Fridericia speciosa, Heteropterys sp. e Distictella sp. responderam com 55,95% do total de sementes aportadas. Das espécies que compuseram a chuva de sementes, 74% não são dispersas pelo vento. Todavia, quando se verificou a quantidade de diásporos coletados, formas dispersas pelo vento foram predominantes, representando 76% do total. Citam-se como táxons arbóreos importantes para a recomposição florestal na região de Campo Verde, situada no Sudeste de Mato Grosso: Tachigali rubiginosa, Siparuna guianensis, Nectandra sp., Cordia alliodora, Alibertia sp., Terminalia brasiliensis e Myrcia sp. Essas espécies devem ser alvo de estudos mais específicos relacionados ao seu potencial para recuperação de ambientes degradados, considerando-se as Áreas de Preservação Permanente e Reservas Legais.

  10. HLA polymorphisms in Cabo Verde and Guiné-Bissau inferred from sequence-based typing.

    Science.gov (United States)

    Spínola, Hélder; Bruges-Armas, Jácome; Middleton, Derek; Brehm, António

    2005-10-01

    Human leukocyte antigen (HLA)-A, -B, and -DRB1 polymorphisms were examined in the Cabo Verde and Guiné-Bissau populations. The data were obtained at high-resolution level, using sequence-based typing. The most frequent alleles in each locus was: A*020101 (16.7% in Guiné-Bissau and 13.5% in Cabo Verde), B*350101 (14.4% in Guiné-Bissau and 13.2% in Cabo Verde), DRB1*1304 (19.6% in Guiné-Bissau), and DRB1*1101 (10.1% in Cabo Verde). The predominant three loci haplotype in Guiné-Bissau was A*2301-B*1503-DRB1*1101 (4.6%) and in Cabo Verde was A*3002-B*350101-DRB1*1001 (2.8%), exclusive to northwestern islands (5.6%) and absent in Guiné-Bissau. The present study corroborates historic sources and other genetic studies that say Cabo Verde were populated not only by Africans but also by Europeans. Haplotypes and dendrogram analysis shows a Caucasian genetic influence in today's gene pool of Cabo Verdeans. Haplotypes and allele frequencies present a differential distribution between southeastern and northwestern Cabo Verde islands, which could be the result of different genetic influences, founder effect, or bottlenecks. Dendrograms and principal coordinates analysis show that Guineans are more similar to North Africans than other HLA-studied sub-Saharans, probably from ancient and recent genetic contacts with other peoples, namely East Africans. PMID:16386651

  11. Distribución de tierras raras en soluciones y coloides de un sistema natural de aguas ácidas (Arroyo del Val, Zaragoza

    Directory of Open Access Journals (Sweden)

    López Julián, P. L.

    1993-04-01

    Full Text Available Acidic waters of the «Arroyo del Val» stream are naturally generated by oxidation of sulfide minerals dispersed in the sedimentary materials of the drainage basin. Mixing of this acidic stream with neutral-alkaline tributaries yields spectacular iron and aluminium rich flocculants that precipitate at the confluences. Previous analysis of rare earth element (REE concentrations of sorne 0.1 I-tm-filtered water samples and colloids are shown. The shale-normalized REE patterns of acidic waters show significant HREE enrichments in terms of Lun/Lan (≈ 2 and they are tipically enriched in the intermediate REEs (IREEs, Eu-Gd-Tb. So, in detail, these patterns are characterized by HREE enrichments between La and Gd and HREE depletions between Gd and Lu. The REE contents of two colloid samples are enriched by 103_104 relative to acidic waterso Different REE patterns were found in these colloids, sampled at differents distances from head of Arroyo del Val stream. Colloid sampled between the acidic waters analysed (CV-l shows a very similar REE pattern to those of the waters. The REE composition normalized to shale of second colloid sample (CV-2, collected down stream, has a flatter profile although it is still slightly convexo Significant REE removal (about 50 % caused by colloid coagulation is observed at the confluence and mixing point of the Arroyo del Val acidic waters with the first alkaline tributary. At this point the CV-l colloid sample shows HREE enrichment relative to acidic waters.El Arroyo del Val (provincia de Zaragoza constituye un curso de aguas ácidas de origen natural, generadas por el lavado de los materiales paleozoicos que atraviesa (Formación Bádenas, ricos en sulfuros metálicos dispersos. En los puntos de confluencia de este arroyo con afluentes de aguas neutras-alcalinas se producen espectaculares procesos de floculación de coloides ricos en aluminio y hierro que tapizan el fondo del arroyo. En este trabajo se

  12. Geología y registros magnéticos entre arroyo La Tapera y Santa Clara del Mar, Mar del Plata

    Directory of Open Access Journals (Sweden)

    J.C. Bidegain

    2005-09-01

    Full Text Available Estudios paleomagnéticos se realizaron en secuencias del Pleistoceno-Holoceno del sector comprendido entre el arroyo La Tapera y Santa Clara del Mar, en Mar del Plata. Los sedimentos de la base de los perfiles en el arroyo La Tapera y en Camet, que se interpreta pertenecen a la Formación Ensenada, contienen direcciones de polaridad reversa y se asignan al cron Matuyama. Las capas sedimentarias de la base del perfil de Santa Clara del Mar, solo presentan direcciones de polaridad normal, por consiguiente toda la secuencia sedimentaria de esta localidad se asigna al cron Brunhes, (< 0,78 Ma. Los registros de susceptibilidad magnética siguen el patrón de los perfiles realizados en el plateau de loess de Argentina. Los valores más bajos de susceptibilidad corresponden a mayor grado de pedogénesis y meteorización más intensa. Las titanomagnetitas acarreadas por el viento en los períodos glaciares (más secos, son las portadoras principales de la remanencia y responden por los registros magnéticos más elevados que se obtienen en las capas menos meteorizadas.

  13. Paleoenvironmental reconstruction for the lower Pliocene Arroyo Piedras section (Tubará - Colombia): Implications for the Magdalena River - paleodelta’s dynamic

    Science.gov (United States)

    Molinares, C. E.; Martinez, J. I.; Fiorini, F.; Escobar, J.; Jaramillo, C.

    2012-11-01

    The Magdalena river transports one of the largest load of sediments per basin area in the world. Its delta position has changed several times over the Neogene. The Arroyo Piedras Section (169 m) in northern Colombia, contains part of the record of the Late Miocene to Early Pliocene evolution of the Magdalena paleodelta. The section was described and sampled for sedimentological and micropaleontological analyses. Based on lithofacies and benthic foraminifera content, the section was divided in three segments, and the upper segment was dated as Early Pliocene using planktonic foraminifera. The lower segment suggests siliciclastic sedimentation in a proximal prodelta/delta plain transitional environment. The intermediate segment suggests sedimentation in a lagoon and/or coastal swamp environment, whereas the upper segment is interpreted as the result of a transgression and subsequent deposition at the foreshore/upper shoreface environment, with a considerable decrease of terrigenous input. The decrease of sediment delivery to the delta produced by permanent El Niño-like conditions coupled with autocyclic processes could explain the transgressive pattern observed in the Arroyo de Piedras section during the Early Pliocene.

  14. Modernization of the turbo in the Laguna Verde Nuclear Power Plant; Modernizacion del turbogrupo en la Central Nuclear de Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Liebana, B.; Merino, A.; Cobos, A.; Gonzalez, J. J.

    2010-07-01

    The power increase of the Laguna Verde Nuclear Power Plant is a project for the rehabilitation and modernization of the turbo and associated equipment to get an increase of its power and of its service life. The project scope includes the design, the engineering, the equipment supply, the installation, the testing and the commissioning. This paper describes the first phase of the project.

  15. View of 'Cape St. Mary' from 'Cape Verde' (Altered Contrast)

    Science.gov (United States)

    2006-01-01

    As part of its investigation of 'Victoria Crater,' NASA's Mars Exploration Rover Opportunity examined a promontory called 'Cape St. Mary' from the from the vantage point of 'Cape Verde,' the next promontory counterclockwise around the crater's deeply scalloped rim. This view of Cape St. Mary combines several exposures taken by the rover's panoramic camera into an approximately true-color mosaic with contrast adjusted to improve the visibility of details in shaded areas. The upper portion of the crater wall contains a jumble of material tossed outward by the impact that excavated the crater. This vertical cross-section through the blanket of ejected material surrounding the crater was exposed by erosion that expanded the crater outward from its original diameter, according to scientists' interpretation of the observations. Below the jumbled material in the upper part of the wall are layers that survive relatively intact from before the crater-causing impact. Near the base of the Cape St. Mary cliff are layers with a pattern called 'crossbedding,' intersecting with each other at angles, rather than parallel to each other. Large-scale crossbedding can result from material being deposited as wind-blown dunes. The images combined into this mosaic were taken during the 970th Martian day, or sol, of Opportunity's Mars-surface mission (Oct. 16, 2006). The panoramic camera took them through the camera's 750-nanometer, 530-nanometer and 430-nanometer filters.

  16. View of 'Cape St. Mary' from 'Cape Verde' (False Color)

    Science.gov (United States)

    2006-01-01

    As part of its investigation of 'Victoria Crater,' NASA's Mars Exploration Rover Opportunity examined a promontory called 'Cape St. Mary' from the from the vantage point of 'Cape Verde,' the next promontory counterclockwise around the crater's deeply scalloped rim. This view of Cape St. Mary combines several exposures taken by the rover's panoramic camera into a false-color mosaic. Contrast has been adjusted to improve the visibility of details in shaded areas. The upper portion of the crater wall contains a jumble of material tossed outward by the impact that excavated the crater. This vertical cross-section through the blanket of ejected material surrounding the crater was exposed by erosion that expanded the crater outward from its original diameter, according to scientists' interpretation of the observations. Below the jumbled material in the upper part of the wall are layers that survive relatively intact from before the crater-causing impact. Near the base of the Cape St. Mary cliff are layers with a pattern called 'crossbedding,' intersecting with each other at angles, rather than parallel to each other. Large-scale crossbedding can result from material being deposited as wind-blown dunes. The images combined into this mosaic were taken during the 970th Martian day, or sol, of Opportunity's Mars-surface mission (Oct. 16, 2006). The panoramic camera took them through the camera's 750-nanometer, 530-nanometer and 430-nanometer filters. The false color enhances subtle color differences among materials in the rocks and soils of the scene.

  17. View of 'Cape St. Mary' from 'Cape Verde'

    Science.gov (United States)

    2006-01-01

    As part of its investigation of 'Victoria Crater,' NASA's Mars Exploration Rover Opportunity examined a promontory called 'Cape St. Mary' from the from the vantage point of 'Cape Verde,' the next promontory counterclockwise around the crater's deeply scalloped rim. This view of Cape St. Mary combines several exposures taken by the rover's panoramic camera into an approximately true-color mosaic. The upper portion of the crater wall contains a jumble of material tossed outward by the impact that excavated the crater. This vertical cross-section through the blanket of ejected material surrounding the crater was exposed by erosion that expanded the crater outward from its original diameter, according to scientists' interpretation of the observations. Below the jumbled material in the upper part of the wall are layers that survive relatively intact from before the crater-causing impact. Near the base of the Cape St. Mary cliff are layers with a pattern called 'crossbedding,' intersecting with each other at angles, rather than parallel to each other. Large-scale crossbedding can result from material being deposited as wind-blown dunes. The images combined into this mosaic were taken during the 970th Martian day, or sol, of Opportunity's Mars-surface mission (Oct. 16, 2006). The panoramic camera took them through the camera's 750-nanometer, 530-nanometer and 430-nanometer filters.

  18. Watershed management program on Santiago Island, Cape Verde

    Science.gov (United States)

    Lopes, Vicente L.; Meyer, John

    1993-01-01

    The Watershed Management Program (WMP) was put into operation in early 1985 on Santiago Island, Cape Verde, with the stated purpose, “to develop and protect the soil and water resources of the Program-designated watersheds … to stabilize the natural environment and increase agricultural production potential in the Program area.” The approach to soil and water conservation in the program has been to build erosion and flood control structures (engineering approach) and plant trees (biological approach) to decrease rill and gully erosion, trap sediment behind control structures, provide flood protection, increase infiltration, increase fuelwood and fodder production, and increase water supplies for irrigation. There have been many successes resulting from specific management activities, but flawed approach or implementation in a few key areas has acted to impede the program's complete success, including lack of a scientific basis for evaluating its impact on soil and water conservation; poor design, placement, and maintenance of some major hydraulic structures; inadequate intervention in stabilizing farmlands or education of farmers and landowners in the need for and benefits of agroforestry; and incomplete integration of engineering and biological approaches.

  19. Analysis of the stability of events occurred in Laguna Verde

    International Nuclear Information System (INIS)

    The new fuel designs for operation cycles more long have regions of uncertainty bigger that those of the old fuels, and therefore, they can have oscillations of power when an event is presented that causes that the reactor operates to high power and low flow of coolant. During the start up of the reactor there are continued procedures that avoid that oscillations are presented with that which makes sure the stable behavior of the reactor. However, when the reactor is operating to nominal conditions and they are shot or they are transferred to low speed the recirculation pumps, it cannot make sure that the reactor doesn't present oscillations of power when entering to the restricted operation regions. The methods of stability analysis commonly use signs of neutronic noise that require to be stationary, but after a transitory one where they commonly get lost the recirculation pumps the signs they don't have the required characteristics, for what they are used with certain level of uncertainty by the limited validity of the models. In this work the Prony method is used to determine the reactor stability, starting from signs of transitory and it is compared with autoregressive models. Four events are analyzed happened in the Laguna Verde power plant where the reactor was in the area of high power and low flow of coolant, giving satisfactory results. (Author)

  20. Severe Accident Simulation of the Laguna Verde Nuclear Power Plant

    Directory of Open Access Journals (Sweden)

    Gilberto Espinosa-Paredes

    2012-01-01

    Full Text Available The loss-of-coolant accident (LOCA simulation in the boiling water reactor (BWR of Laguna Verde Nuclear Power Plant (LVNPP at 105% of rated power is analyzed in this work. The LVNPP model was developed using RELAP/SCDAPSIM code. The lack of cooling water after the LOCA gets to the LVNPP to melting of the core that exceeds the design basis of the nuclear power plant (NPP sufficiently to cause failure of structures, materials, and systems that are needed to ensure proper cooling of the reactor core by normal means. Faced with a severe accident, the first response is to maintain the reactor core cooling by any means available, but in order to carry out such an attempt is necessary to understand fully the progression of core damage, since such action has effects that may be decisive in accident progression. The simulation considers a LOCA in the recirculation loop of the reactor with and without cooling water injection. During the progression of core damage, we analyze the cooling water injection at different times and the results show that there are significant differences in the level of core damage and hydrogen production, among other variables analyzed such as maximum surface temperature, fission products released, and debris bed height.

  1. The geology of Pedra Verde region, Ceara, Brazil

    International Nuclear Information System (INIS)

    The upper Proterozoic Mambira Formation (≥ 1.1000 m.y.) consists of > 1000 m of micaschists with subordinate quartzites and limestones, its upper part, the ''Pedra Verde Phyllite'', is composed of phyelitic slump breccias, with abundance of pyrite. The Mambira formation crops out in the west flank of the tope Anticline, formed by ∼ 600 m of quartzites with sillimanite and/or andalusite (Sao Joaquim Formation), underlain by granitoid gneisses, representing the amphibolite facies. The contact between the Sao Joaquim and Mabira Formations appears to be tectonic. The folding and the metamorphism of the latter date from the Brazilian Cycle, which also affected the gneisses, causing homogeneization of the whole-rock K/Ar ages around 500 m.y. After erosion of some 10.000 m of sedimentary re-activation of the faults, which may already have formed during the deposition of the Mambira Formation resulted in the development of the Ubari Graben. The above formations are unconformably overlain by 300-350 m of subhorizontal Shallow-Marine sandstones belonging to the Serra Grande Formation, of upper silurian to lower devonian ages

  2. “Aunque verde, todo cinturón Aprieta”

    Directory of Open Access Journals (Sweden)

    Eulalia Borja Bedoya

    2016-05-01

    Full Text Available Medellín, en su afán de venderse al mundo como una ciudad de servicios se ha vuelto hipócrita con sus ciudadanos y ha venido construyendo desde los centros de poder trasnacionales unos modelos de ciudad excluyentes, que cada vez intentan acabar con esos que no han tenido mucho, pero que luchan con lo poco, que se han tomado a Medellín y han construido otras maneras de vivirse la ladera, siempre en una lucha constante, reivindicando su derecho a la ciudad; Las laderas de Medellín si bien se han ido conformando en gran parte como cinturones de miseria, al mismo tiempo también lo han hecho como territorios de vida y resistencia. Allá se siembra y se aprende a vivir con dignidad aunque sin mucho dinero, saben qué es lo verde porque vienen del campo y saben cultivar la tierra, son conscientes de que habitan un territorio con agua, árboles, suelos para cuidar y respetar y es por eso que durante todos estos años han sabido hacerse una misma con la montaña que los acogió cuando la ciudad entera les dio la espalda.

  3. Modelo matemático para determinar la calidad del agua en dos puntos del arroyo Guachinango

    Directory of Open Access Journals (Sweden)

    Jeny Pérez Petitón

    2009-01-01

    Full Text Available El trabajo tuvo como objetivo analizar la posible relación de los indicadores físico químicos pH y CE, de fácil determinación, con los indicadores microbiológicos Demanda Bioquímica de Oxígeno (DBO5, Demanda Química de Oxígeno (DQO y Coliformes Totales (CT. Se tuvieron en cuenta los resultados obtenidos en la caracterización física, química y microbiológica de la subcuenca en estudio. Teniendo en cuenta los mismos se seleccionaron dos puntos de muestreos ubicados en la presa Hemingway I, donde nace el arroyo y el otro en la toma de agua de la finca la Conchita, donde se realizan todos los experimentos de campo. Con los datos obtenidos se determinó la correlación que existe entre los parámetros físicos químicos y los análisis microbiológicos realizados, así como los modelos matemáticos correspondientes. El comportamiento de los indicadores físicos químicos está entre los rangos permisibles para el uso de esta agua en el riego. Los indicadores microbiológicos muestran que hay alta contaminación por microorganismos patógenos, lo cual significa que estas aguas no pueden ser utilizadas en el riego sin tratamiento previo. Existe correlación positiva entre el pH con la DBO5 y DQO, así como entre la conductividad eléctrica y los coniformes totales, existiendo una correlación mas significativa para el punto de muestreo en la presa Hemingway I, por lo que los modelos definidos en este trabajo permiten estimar para los puntos de muestreo estudiados el comportamiento de los parámetros de DBO5, DQO y CT a partir de la medición de los parámetros físico-químico pH y CE de fácil determinación.

  4. Diffuse CO2 degassing and volcanic activity at Cape Verde islands, West Africa

    Science.gov (United States)

    Dionis, Samara M.; Pérez, Nemesio M.; Hernández, Pedro A.; Melián, Gladys; Rodríguez, Fátima; Padrón, Eleazar; Sumino, Hirochika; Barrrancos, Jose; Padilla, Germán D.; Fernandes, Paulo; Bandomo, Zuleyka; Silva, Sónia; Pereira, Jose M.; Semedo, Hélio; Cabral, Jeremias

    2015-04-01

    Diffuse CO2 emission surveys were carried out at São Vicente, Brava, and Fogo islands, Cape Verde, archipelago to investigate the relationship between diffuse CO2 degassing and volcanic activity. Total amounts of diffuse CO2 discharged through the surface environment of the islands of São Vicente, Brava, and Fogo were estimated in 226, 50, and 828 t d-1, respectively. The highest CO2 efflux values of the three volcanic islands systems were observed at the summit crater of Pico do Fogo (up to 15.7 kg m-2 d-1). Statistical graphical analysis of the data suggests two geochemical populations for the diffuse CO2 emission surveys. The geometric mean of the peak population, expressed as a multiple of the geometric mean of the background population, seems to be the best diffuse CO2 emission geochemical parameter to correlate with the volcanic activity (age of the volcanism) for these three island volcanic systems at Cape Verde. This observation is also supported by helium isotopic signature observed in the Cape Verde's fluids, fumaroles, and ground waters. This study provides useful information about the relationship between diffuse CO2 degassing and volcanic activity at Cape Verde enhancing the use of diffuse CO2 emission as a good geochemical tool, for volcanic monitoring at Cape Verde as well as other similar volcanic systems.

  5. Validation of SIMULATE-3K for stability analysis of Laguna Verde nuclear plant

    Energy Technology Data Exchange (ETDEWEB)

    Castillo, Rogelio, E-mail: rogelio.castillo@inin.gob.mx [Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca s/n, La Marquesa, Ocoyoacac, Estado de México 52750 (Mexico); Alonso, Gustavo, E-mail: gustavo.alonso@inin.gob.mx [Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca s/n, La Marquesa, Ocoyoacac, Estado de México 52750 (Mexico); Instituto Politecnico Nacional, Unidad Profesional Adolfo Lopez Mateos, Ed. 9, Lindavista, D.F. 07300 (Mexico); Ramírez, J. Ramón, E-mail: ramon.ramirez@inin.gob.mx [Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca s/n, La Marquesa, Ocoyoacac, Estado de México 52750 (Mexico)

    2013-12-15

    Highlights: • Neutronic/thermal hydraulic event in Laguna Verde is modeled. • A good agreement is obtained between SIMULATE-3K results and data plant for frequency and DR. • Other noise analysis techniques are used for the same purpose with good agreement. • Validation of SIMULATE-3K for stability analysis of Laguna Verde is confirmed - Abstract: Boiling Water Reactors are two phase flow systems which are susceptible to different types of flow instabilities. Among these are the coupled neutronic/thermal-hydraulic instabilities, these may compromise established fuel safety limits. These instabilities are characterized by periodic core-power and hydraulic oscillations. SIMULATE-3K code has been tested for stability analysis for several benchmarks, however to qualify the SIMULATE-3K code for a particular power plant a specific reactor plant analysis must be done. In this paper, the plant model of Laguna Verde Nuclear Power Plant is built and SIMULATE-3K is tested against the 1995 coupled neutronic/thermal-hydraulic instability event of Laguna Verde. Results obtained show the adequacy of this code to specific Laguna Verde power plant stability analysis.

  6. Analysis of the stability of events occurred in Laguna Verde; Analisis de estabilidad de eventos ocurridos en Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Castillo D, R.; Ortiz V, J. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico); Calleros M, G. [CFE, Central Nucleoelectrica Laguna Verde, Carretera Cardel-Nautla Km. 42.5, Alto Lucero, Veracruz (Mexico)

    2005-07-01

    The new fuel designs for operation cycles more long have regions of uncertainty bigger that those of the old fuels, and therefore, they can have oscillations of power when an event is presented that causes that the reactor operates to high power and low flow of coolant. During the start up of the reactor there are continued procedures that avoid that oscillations are presented with that which makes sure the stable behavior of the reactor. However, when the reactor is operating to nominal conditions and they are shot or they are transferred to low speed the recirculation pumps, it cannot make sure that the reactor doesn't present oscillations of power when entering to the restricted operation regions. The methods of stability analysis commonly use signs of neutronic noise that require to be stationary, but after a transitory one where they commonly get lost the recirculation pumps the signs they don't have the required characteristics, for what they are used with certain level of uncertainty by the limited validity of the models. In this work the Prony method is used to determine the reactor stability, starting from signs of transitory and it is compared with autoregressive models. Four events are analyzed happened in the Laguna Verde power plant where the reactor was in the area of high power and low flow of coolant, giving satisfactory results. (Author)

  7. 77 FR 38280 - Verde Energy USA New York, LLC; Supplemental Notice That Initial Market-Based Rate Filing...

    Science.gov (United States)

    2012-06-27

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Verde Energy USA New York, LLC; Supplemental Notice That Initial Market... in the above-referenced proceeding of Verde Energy USA New York, LLC's application for...

  8. 77 FR 14058 - Santa Teresa Southern Railroad, LLC-Operation Exemption-Rail Line of Verde Logistics Railroad...

    Science.gov (United States)

    2012-03-08

    ... Logistics Railroad, LLC at Santa Teresa, Dona Ana County, NM Santa Teresa Southern Railroad, LLC (STSR), a... feet of rail line owned by Verde Logistics Railroad, LLC (Verde). The rail line extends between a point... to shippers and receivers located in the Santa Teresa Logistics Industrial Park. \\1\\ STSR states...

  9. Especiación de tierras raras en las soluciones ácidas y neutras del sistema de drenaje del Arroyo del Val (Zaragoza

    Directory of Open Access Journals (Sweden)

    Zamora, A.

    1994-08-01

    Full Text Available Special geochemical characters of the Arroyo del Val drainage basin allow to study different aspects related to REE behaviour. The hydrologic system contains a main stream (Arroyo del Val of acidic waters naturally generated (sulfate rich solutions, with high levels of Al, Fe and heavy metals, and with pH values between 3 and 4.5 and several calcium bicarbonate (sulfate tributaries (with pH values as high as 7.5, measurable alkalinity and striking phosphate concentrations. Mixing of the acidic stream with neutral tributaries yields spectacular sulfate-iron-aluminum rich flocculants that precipitate at the confluences, along the principal stream. The concentration of REEs was measured for acidic water samples col1ected along the headwaters zone of the Arroyo del Val stream and for neutral water samples fram two tributaries. The REE content of acidic waters are enriched by 102 relative to neutral ones and the shale-normalized REE patterns for these acidic freshwaters are enriched in the inter• mediate REEs (IREE, Eu-Tb. Speciation calculations were performed on both water groups. Dominant forms of REEs in the acidic waters include free metal species (Ln3+ ≈ 35% and mainly sulfate complexes ((LnSO+4 ≈ 60% and minor Ln(SO4-2 ≈ 5%. REE sulfate complexation don't fractionate the REEs in solution because there is not an appreciable variation in REE sulfate complexation constants across the lanthanide serie. So, REE convex patterns in these acidic waters must be related to interaction of the acid waters with clay minerals and oxyhydroxide coatings in the paleozoic materials of drainage basin and/or with the col1oid pool of those waters. In the neutral freshwaters of tributaries dissolved REEs are complexed with carbonate and phosphate ions. REE carbonate and phosphate complexation constants across the lanthanide serie increase by several orders of magnitude from La to Lu. And so, phosphate and carbonate complexes account for 80

  10. Petrografía y geoquímica del magmatIsmo cretácico superior-eoceno en el área de PichaIhue, provincia de Neuquén Petrography and geochemistry of Upper Cretaceous-Eocene magmatism in the Pichaihue area, Neuquén Province

    Directory of Open Access Journals (Sweden)

    M. Paula Mateo Fernández Caso

    2011-06-01

    Full Text Available Hacia fines del Mesozoico, en el sector noroeste de la provincia de Neuquén se desarrolló un magmatismo asociado a la evolución y migración del arco andino desde los 36º40' hasta los 38º20' de latitud sur. En base a estudios petrológicos, se caracterizaron facies hipabisales y extrusivas que afloran en el área de Pichaihue. Las primeras están compuestas por andesitas que se emplazan como lacolitos, diques o filones capa intruyendo las secuencias sedimentarias mesozoicas. También se reconocen afloramientos de basaltos. Las facies extrusivas están constituidas principalmente por coladas brechosas, coladas masivas y pequeños domos. La geoquímica evidencia una impronta calcoalcalina, de arco volcánico, con una corteza de espesor normal y patrones de elementos traza que sugieren una misma fuente. Dentro del marco regional, se pueden distinguir tres grupos: los diques del cerro Mocho con alto contenido en Ti y mayor relación Sm/Yb, magmatismo cretácico superior-paleoceno al que pertenecen las facies extrusivas (Andesita Rivera y un evento eoceno al cual corresponden las facies hipabisales (Diques de Colipilli. Por último, la presencia de estas rocas en este segmento de los Andes evidencia una importante migración hacia el este del arco volcánico cretácico superior-eoceno indicando su posición más oriental.Magmatism related to the growth and migration of the Andean arc was developed from the 36º40'S to the 38º20'S latitude, in the northwestern sector of the Neuquén Province, by the end of the Mesozoic. Hypabyssal and extrusive facies, which outcrop in the Pichaihue area, were described based on petrologic studies. The first ones are composed of andesites that are emplaced as lacoliths, dikes or sills intruding the Mesozoic sedimentary sequences. In addition, basalts outcrops were recognized. The extrusive facies consist of breccia or massive lavas and little domes. The geochemistry reveals an arc-like calc-alkaline signature

  11. Groundwater Resources of Ribeira Paul Basin, Island of Santo Antao, Cape Verde, West Africa

    Science.gov (United States)

    Heilweil, Victor M.; Gingerich, Stephen B.; Verstraeten, Ingrid M.

    2010-01-01

    Groundwater resources in Cape Verde provide water for agriculture, industry, and human consumption. These resources are limited and susceptible to contamination. Additional groundwater resources are needed for continued agricultural development, particularly during times of drought, but increased use and (or) climatic change may have adverse effects on the quantity and quality of freshwater available. In volcanic island aquifers such as those of Cape Verde, a lens of fresh groundwater typically ?floats? upon a layer of brackish water at the freshwater/saltwater boundary, and increased pumping may cause salt water intrusion or other contamination. A recent U.S. Geological Survey study assessed baseline groundwater conditions in watersheds on three islands of Cape Verde to provide the scientific basis for sustainably developing water resources and minimizing future groundwater depletion and contamination.

  12. Groundwater Resources of Mosteiros Basin, Island of Fogo, Cape Verde, West Africa

    Science.gov (United States)

    Heilweil, Victor M.; Gingerich, Stephen B.; Plummer, L. Niel; Verstraeten, Ingrid M.

    2010-01-01

    Groundwater resources in Cape Verde provide water for agriculture, industry, and human consumption. These resources are limited and susceptible to contamination. Additional groundwater resources are needed for continued agricultural development, particularly during times of drought, but increased use and (or) climatic change may have adverse effects on the quantity and quality of freshwater available. In volcanic island aquifers such as those of Cape Verde, a lens of fresh groundwater typically ?floats? upon a layer of brackish water at the freshwater/saltwater boundary, and increased pumping may cause salt water intrusion or other contamination. A recent U.S. Geological Survey study assessed baseline groundwater conditions in watersheds on three islands of Cape Verde to provide the scientific basis for sustainably developing water resources and minimizing future groundwater depletion and contamination.

  13. Groundwater Resources of Ribeira Faja Basin, Island of Sao Nicolau, Cape Verde, West Africa

    Science.gov (United States)

    Heilweil, Victor M.; Gingerich, Stephen B.; Plummer, L. Niel; Verstraeten, Ingrid M.

    2010-01-01

    Groundwater resources in Cape Verde provide water for agriculture, industry, and human consumption. These resources are limited and susceptible to contamination. Additional groundwater resources are needed for continued agricultural development, particularly during times of drought, but increased use and (or) climatic change may have adverse effects on the quantity and quality of freshwater available. In volcanic island aquifers such as those of Cape Verde, a lens of fresh groundwater typically ?floats? upon a layer of brackish water at the freshwater/saltwater boundary, and increased pumping may cause salt water intrusion or other contamination. A recent U.S. Geological Survey study assessed baseline groundwater conditions in watersheds on three islands of Cape Verde to provide the scientific basis for sustainably developing water resources and minimizing future groundwater depletion and contamination.

  14. Mitochondrial portrait of the Cabo Verde archipelago: the Senegambian outpost of Atlantic slave trade.

    Science.gov (United States)

    Brehm, A; Pereira, L; Bandelt, H-J; Prata, M J; Amorim, A

    2002-01-01

    In order to study the matrilineal genetic composition in Cabo Verde (Republic of Cape Verde), an archipelago that used to serve as a Portuguese entrepôt of the Atlantic slave trade, we have analysed a total of 292 mtDNAs sampled from the seven inhabited islands for the hypervariable segment I (HVS-I) and some characteristic RFLPs of the coding regions. The different settlement history of the northwestern group of the islands is well reflected in the mtDNA pool. The total Cabo Verde sample clearly displays the characteristic mitochondrial features of the Atlantic fringe of western Africa and testifies to almost no mitochondrial input from the Portuguese colonizers. PMID:12015000

  15. FOGO-2014: Monitoring the Fogo 2014 Eruption, Cape Verde

    Science.gov (United States)

    Fernandes, Rui; Faria, Bruno

    2015-04-01

    Fogo volcano, located in the Cape Verde Archipelago offshore Western Africa, is a complete stratovolcano system that was created by the Cape Verde hotspot, forming the island of Fogo. The top (Pico do Fogo) reaches ~2830m above sea level, and raises ~1100m above Chã das Caldeiras, an almost flat circular area with approximately 10 kilometres in the north-south direction and 7 kilometres in the east-west direction. Chã das Caldeiras, surrounded towards the West by the ~1000m high Bordeira rampart, has been inhabited since the early 20th Century, because it is one of the most productive agricultural areas in this semi-arid country. Fogo volcano erupted on November 23, 2014 (~10:00UTC) on a subsidiary vent of the main cone, after 19 years of inactivity. C4G (Collaboratory for Geosciences), a distributed research infrastructure created in 2014 in the framework of the Portuguese Roadmap for Strategic Research Infrastructures, immediately offered support to the Cape Verdean authorities, with the goal of complementing the permanent geophysical monitoring network operated in Fogo island by INMG, the Cape Verdean Meteorological and Geophysical Institute. This permanent network is composed of seven seismographic stations and three tiltmeter stations, and the data is transmitted in real time to the INMG geophysical laboratory in São Vicente Island, where it is analysed on a routine basis. Pre-eruptive activity started to be detected by the permanent monitoring network on October 2014, with earthquakes occurring at depths larger than 15 km. These events led to a first volcanic warning to the Cape Verdean Civil Protection Agency. On November 22 several volcano-tectonic earthquakes were recorded at shallow depths, indicating shallow fracturing. On the basis of this activity, INMG issued a formal alert of an impending eruption to the Civil Protection Agency, ~24 hours before the onset of the eruption. Volcanic tremor and clear tiltmeter signals were recorded about one hour

  16. Training in fundamentals of radiological coverage in Laguna Verde NPP

    International Nuclear Information System (INIS)

    In 2010, the Institute of Nuclear Power Operations (INPO) celebrates the Knowledge Transfer and Retention Workshop, an event where nuclear regulators and operators presented the strategies that various NPP to worldwide were implemented to mitigate the consequences of this generational change and take advantage of it, the trend in the presented works was the same: the generational change occurs in a faster way that the transfer of knowledge, the future was already here and many NPP had not been adequately prepared to train its nuclear technicians and engineers in the tasks demanded by the industry of them, so in addition to preparing these workers to forced marches was necessary to establish strategies to retain at more experienced staff in the industry. The Laguna Verde NPP has not been exempt to this process; the preparation of personnel squares to replace those that reaching retirement age in the Comision Federal de Electricidad (CFE) has become extensive in the last five years, sometimes leading to have personnel covering functions without an alternate to the next lower position, the cause? Not enough staff. In the specific case of radiation protection (Rp) the time required for obtaining the status of Rp technician according to the ANSI/ANS 3.1 standard is 2 years, one of the tasks that most occupies part of these two years is training in radiological coverage, this training requires a mix of knowledge and experience, recently one of the concepts used for training in Rp is the evaluation and management of the radiological risk, topic that is considered in this technical work. (Author)

  17. Mineralogical, IR-spectral and geochemical monitoring of hydrothermal alteration in a deformed and metamorphosed Jurassic VMS deposit at Arroyo Rojo, Tierra del Fuego, Argentina

    Science.gov (United States)

    Biel, C.; Subías, I.; Acevedo, R. D.; Yusta, I.; Velasco, F.

    2012-04-01

    The Arroyo Rojo Zn-Pb-Cu volcanogenic massive sulfide deposit is the main deposit of the Fin del Mundo District in the Fuegian Andes, Argentina. This deposit is hosted by a Middle Jurassic volcanic and volcanoclastic sequence forming the Lemaire Formation. The latter consists, from the base up, of the following: rhyolitic and dacitic porphyritic rocks, ignimbrite, tuff, and flow. It is underlain by a pre-Jurassic basement and overlain by the hyaloclastic andesites of the Yahgán Formation. The Arroyo Rojo consists of stacked lenticular lenses that are associated with disseminated mineralization in both the footwall and the hanging wall. The internal structure of the ore lenses is marked by the occurrence of massive, semi-massive and banded facies, along with stringer and brecciated zones and minor ore disseminations. The mineral assemblage comprises mainly pyrite and sphalerite, with minor amounts of galena and chalcopyrite and rare pyrrhotite, arsenopyrite, tetrahedrite and bournonite. The ores and the volcanic host rocks have metamorphosed to greenschist facies and were overprinted by a penetrative tectonic foliation, which led to the development of mylonitic, and cataclastic textures, recrystallization and remobilization. Primary depositional characteristics and regional and hydrothermal alteration patterns were preserved despite deformation and metamorphism. Therefore, primary banding was preserved between facies boundaries. In addition, some remnants of magmatic origin are recognizable in preserved phenocrysts and volcaniclastic phenoclasts. Most of the volcanic and volcaniclastic rocks of the host sequence show a rhyolitic to rhyo-dacitic composition. Regional seafloor alteration, characterized by the presence of clinozoisite, Fe-chlorite and titanite, along with quartz and albite, is partially obliterated by hydrothermal alteration. The hydrothermal alteration is stratabound with the following assemblages, which developed from the base to top: (1) Quartz

  18. Texturas, argilominerales y metales en sedimentos de fondo de arroyos de la franja costera sur del Río de la Plata

    Directory of Open Access Journals (Sweden)

    Marcelo Manassero

    2010-08-01

    Full Text Available Se estudiaron sedimentos de fondo extraídos en posiciones distales de los arroyos El Pescado, Cañada Arregui, Buriñigo, Juan Blanco, El Destino, Samborombón y Salado, estos dos últimos ubicados en la región más abierta del estuario del río de la Plata. Para la caracterización granulométrica (tamizado y pipeteo, mineralogía de arcillas (difracción rayos X, contenido de materia orgánica (digestión ácida en caliente, valoración titulométrica y concentración de metales (espectrometría AA, se emplearon métodos estandarizados de laboratorio. La mayoría de los sedimentos fueron clasificados como limos arcillosos y arcillas limosas, sin embargo en el río Salado y los arroyos El Pescado y El Destino los sedimentos de fondo son más arenosos. La composición mineralógica de las arcillas indica que los sedimentos de los arroyos cuentan con una importante proporción de esmectita y caolinita, aunque manteniéndose una predominancia illítica. Significativamente, mayor proporción de caolinita está presente en los ríos Samborombón y Salado, evidenciando una importante influencia estuárica. El hierro y el manganeso son los metales mayoritarios con mayor variabilidad entre cursos. Los humedales costeros y zonas deprimidas de la costa del estuario favorecen la retención de estos dos elementos. Las altas variaciones de los contenidos reflejan diferencias fisicoquímicas en los ambientes depositacionales. El orden de abundancia del resto de los metales analizados es Zn>Pb=Cu>Cr> Ni>Cd, con concentraciones más elevadas en los de la vertiente sur del estuario, manteniendo un comportamiento similar al de los mayoritarios.

  19. Genetic structure of the population of Cabo Verde (west Africa): evidence of substantial European admixture.

    Science.gov (United States)

    Parra, E J; Ribeiro, J C; Caeiro, J L; Riveiro, A

    1995-08-01

    The population of Cabo Verde was founded in the fifteenth century (1462), on the basis of slaves brought from the West African coast and a few Europeans, mainly from Portugal. The polymorphism of six red cell enzymes (ADA, AK1, ALAD, ESD, GLO1, and PGD) and ten plasma proteins (AHSG, BF, F13A, F13B, GC, HP, ORM, PLG, TBG, and TF) was studied in a sample of 268 individuals from Cabo Verde (West Africa). There is no statistical evidence of genetic heterogeneity between the two groups of islands which constitute the archipelago, Barlavento and Sotavento. The gene frequency distribution observed in Cabo Verde differs, in many markers, from that of West African populations, suggesting an important European influence. The proportion of Caucasian genes in the population of Cabo Verde has been calculated to be M = 0.3634 +/- 0.0510, and the considerable dispersion of the locus-specific admixture estimates seems to indicate random drift has also played a role in the evolution of the allele frequencies in the archipelago. Partition of the variance of the mean estimate in evolutionary and sampling variance shows the evolutionary variance is more than ten times higher than the sampling variance. When dendrograms are constructed on the basis of different genetic distances, the population of Cabo Verde clusters with Afro-Americans, forming a different group from the populations of the African continent. This is interpreted as a consequence of the importance of Caucasian admixture both in Afro-Americans and in the population of Cabo Verde. PMID:7485435

  20. The apid cuckoo bees of the Cape Verde Islands (Hymenoptera, Apidae

    Directory of Open Access Journals (Sweden)

    Jakub Straka

    2012-08-01

    Full Text Available The apid cuckoo bees of the Cape Verde Islands (Republic of Cape Verde are reviewed and five species recognized, representing two genera. The ammobatine genus Chiasmognathus Engel (Nomadinae: Ammobatini, a specialized lineage of cleptoparasites of nomioidine bees is recorded for the first time. Chiasmognathus batelkai sp. n. is distinguished from mainland African and Asian species. The genus Thyreus Panzer (Apinae: Melectini is represented by four species – Thyreus denolii sp. n., T. batelkai sp. n., T. schwarzi sp. n., and T. aistleitneri sp. n. Previous records of Thyreus scutellaris (Fabricius from the islands were based on misidentifications.

  1. Determinantes da internacionalização das empresas hoteleiras em Cabo Verde

    OpenAIRE

    Lopes, Jailson Menezes Correia.

    2012-01-01

    Esta dissertação visa identificar os determinantes da internacionalização das empresas hoteleiras em Cabo Verde, nomeadamente as de origem portuguesa. Considerando o ritmo de crescimento registado na indústria hoteleira em Cabo Verde e a crescente presença de investimento externo na actividade turística em algumas ilhas, procurou-se neste estudo verificar as principais motivações que estariam na base da decisão da realização desses investimentos. O crescimento das empresas hoteleiras na econo...

  2. Infraestructura verde urbana: Plan Estratégico de Desarrollo Urbano de Makeni (Sierra Leona)

    OpenAIRE

    García Fernández, Natalia; Salas Ruiz, Adela

    2014-01-01

    La aportación al Plan Estratégico de Desarrollo Urbano de Makeni (Sierra Leona) desde la Infraestructura Verde pretende formalizar una estrategia de aproximación al territorio que ponga en valor la capacidad productiva de éste y permita compatibilizar la protección de las áreas de mayor valor con un desarrollo urbano y socioeconómico sostenible. La identificación de la Infraestructura Verde en el territorio no es otra cosa que la formalización de la “elección del sitio” que evidenciamos de...

  3. Sobre o escândalo político em Cabo Verde

    OpenAIRE

    Anjos, José Carlos dos

    2015-01-01

    Cabo Verde será realmente um país com condições excepcionais de transparência, como é geralmente reconhecido pela comunidade internacional ? Os governantes cabo-verdeanos fizeram sempre questão de se apresentarem como uma excepção em África. Ora, podemos interrogar-nos sobre as condições sociais de sucesso das denúncias da grande corrupção em Cabo Verde e sobre o quadro moral instaurado à volta dos assuntos de Estado desde a abertura ao multipartidarismo. Uma análise dos principais escândalos...

  4. Urban bioclimate and comfort assessment in the African city of Praia (Cape Verde)

    OpenAIRE

    Lopes, António; Correia, Ezequiel; Nascimento, Judite M.; Canário, Paulo

    2015-01-01

    The population of Praia (Ilha de Santiago/Cape Verde) has recently increasedfrom 90,000 inhabitants in 2000 to 132,300 in 2012. Located in the southern part of the SantiagoIsland, the city has an average temperature of 22ºC and high values of humidity.The hot andrainy season occurs between July and October. According to the Cape Verde “National ClimateChange Adaptation” report, the temperatures increased about 1ºC in the last 15 years andscenariosindicate an annual warming between 0.7ºC and 2...

  5. Desempenho térmico de uma cobertura verde num edifício solar passivo

    OpenAIRE

    Santos, Daniel José Pereira

    2012-01-01

    Sendo já uma solução construtiva comum nalguns países, as coberturas verdes têm sofrido grandes evoluções técnicas desde o seu aparecimento, constituindo agora um elemento cada vez mais preponderante na construção sustentável, com resultados positivos demonstrados em estudos térmicos e hidrológicos. A presente dissertação pretende testar o desempenho térmico de uma cobertura verde do tipo extensivo, comparando o seu comportamento com uma cobertura tradicional. A partir da an...

  6. Fatores que influenciam a compra de produtos verdes : teoria dos valores de consumo

    OpenAIRE

    Lourenço, Tiago Filipe Ferreira

    2014-01-01

    Mestrado em Marketing Hoje em dia, assistimos da parte dos consumidores a uma mudança de atitude perante os seus comportamentos de consumo em resposta às crescentes preocupações ambientais. O marketing tem assumido um papel de destaque nesta mudança de comportamento, sendo que, a área do marketing onde incide este tema é conhecida como marketing verde. A investigação identifica quais os fatores que influenciam o comportamento de compra verde. Para tal, foram definidos os seguintes objetivo...

  7. Martin Chalfie y la proteína verde fluorescente Martin Chalfie y la proteína verde fluorescente

    Directory of Open Access Journals (Sweden)

    Zacarías Pereira Vega

    2012-12-01

    Full Text Available The history of the green fluorescent protein (GFP starts with Osamu Shimomura at the beginning of the 1960s, with his discovery from the extracts of the Aequorea victoria jellyfish. However, it is not until the beginning of the 1990s, that the neurobiologist Martin Chalfie, applying genetic engineering tech- niques, achieved for the first time the heterology expression of the GFP in prokaryotes (E. coli and eukaryotes (Caernohabditis elegans, from a clone of the jellyfish’s gen that codifies the GFP prepared by Douglas Prasher. Besides fluorescing in green, the results from this work also demonstrated that it does not require any other cofactor or enzyme of the jellyfish for its expression or for the own forming of a fluorophore. At the same time, Chalfie proposed that the GFP could be used for the marking of cells on living ani- mals or the tag of proteins. Based upon these results, many scientists started working on research related to the GFP; actually this protein is used on different fields such as biotechnol- ogy, development biology, environmental chemistry and medicine. In the case of the latter, it has helped to elucidate the cellular mechanisms from which diseases are made of. Science owes Roger Tsien, amongst other contributions, the creation of differ- ent mutations of the GFP.La historia de la proteína verde fluorescente (GFP se inicia con Osamu Shimomura a principios de la década de 1960, con su descubrimiento de esta proteína a partir de extractos de la medusa Aequorea victoria. Sin embargo, es a principios de la década de 1990 que el neurobiólogo Martin Chalfie, aplicando técnicas de ingeniería genética, logra por primera vez la expresión heteróloga de la GFP en procariotas (Escherichia coli y eucariotas (Caernohabditis elegans, a partir de un clon del gen de la medusa que codifica a la GFP, preparado por Douglas Prasher. Además de fluorescer en verde, los resultados de este trabajo también demostraron que no se

  8. Arroyo del Vizcaíno, Uruguay: a fossil-rich 30-ka-old megafaunal locality with cut-marked bones

    Science.gov (United States)

    Fariña, Richard A.; Tambusso, P. Sebastián; Varela, Luciano; Czerwonogora, Ada; Di Giacomo, Mariana; Musso, Marcos; Bracco, Roberto; Gascue, Andrés

    2014-01-01

    Human–megafauna interaction in the Americas has great scientific and ethical interest because of its implications on Pleistocene extinction. The Arroyo del Vizcaíno site near Sauce, Uruguay has already yielded over 1000 bones belonging to at least 27 individuals, mostly of the giant sloth Lestodon. The assemblage shows some taphonomic features suggestive of human presence, such as a mortality profile dominated by prime adults and little evidence of major fluvial transport. In addition, several bones present deep, asymmetrical, microstriated, sharp and shouldered marks similar to those produced by human stone tools. A few possible lithic elements have also been collected, one of which has the shape of a scraper and micropolish consistent with usage on dry hide. However, the radiocarbon age of the site is unexpectedly old (between 27 and 30 thousand years ago), and thus may be important for understanding the timing of the peopling of America. PMID:24258717

  9. Comportamiento hidrológico de la Cuenca Alta del Arroyo Pigüé (Buenos Aires, Argentina): balance hídrico (1964-2007)

    OpenAIRE

    Rosell, Patricia; García Martínez, María Belén

    2008-01-01

    En este trabajo se aborda el estudio hidrológico de la cuenca alta del Arroyo Pigüé, a través del estudio de la serie de precipitaciones y el balance hídrico del suelo de la cuenca. Desde un punto de vista climático, se constata la existencia de un ciclo húmedo en la región, a partir de la década de los setenta, que se traduce, a nivel hidrológico en una progresiva sobresaturación de los suelos, con fuertes descargas en dirección a la red de drenaje del Pigüé. Ésta, parcialmente desconectada ...

  10. Arroyo del Vizcaíno, Uruguay: a fossil-rich 30-ka-old megafaunal locality with cut-marked bones.

    Science.gov (United States)

    Fariña, Richard A; Tambusso, P Sebastián; Varela, Luciano; Czerwonogora, Ada; Di Giacomo, Mariana; Musso, Marcos; Bracco, Roberto; Gascue, Andrés

    2014-01-01

    Human-megafauna interaction in the Americas has great scientific and ethical interest because of its implications on Pleistocene extinction. The Arroyo del Vizcaíno site near Sauce, Uruguay has already yielded over 1000 bones belonging to at least 27 individuals, mostly of the giant sloth Lestodon. The assemblage shows some taphonomic features suggestive of human presence, such as a mortality profile dominated by prime adults and little evidence of major fluvial transport. In addition, several bones present deep, asymmetrical, microstriated, sharp and shouldered marks similar to those produced by human stone tools. A few possible lithic elements have also been collected, one of which has the shape of a scraper and micropolish consistent with usage on dry hide. However, the radiocarbon age of the site is unexpectedly old (between 27 and 30 thousand years ago), and thus may be important for understanding the timing of the peopling of America.

  11. Cuatro figuras de la música colombiana: Jairo Varela, Diomedes Díaz, Joe Arroyo y Carlos Vives, sus opciones musicales y los debates que sugieren

    Directory of Open Access Journals (Sweden)

    Petrit Baquero

    2015-09-01

     En  ese sentido,  la música  popular puede  constituir la mejor  forma  de  expresar las realidades, vivencias,  los sueños,  las esperanzas y alternativas de vida, con lo cual, los criterios  que impone  la industria cultural  pueden también ser permeados desde abajo por esos localismos que irrumpen de manera permanente. Jairo Varela, Diomedes Díaz, Joe Arroyo y Carlos Vives representan a grandes artistas que, a su manera, transformaron la música colombiana al impulsar  distintos procesos  cuyos efectos se siguen viendo día a día.

  12. Los depositos de yeso intrasedimentario del arroyo El Siasgo, partidos de Monte y General Paz, provincia de Buenos Aires

    Directory of Open Access Journals (Sweden)

    N. V. Dangavs

    2002-09-01

    Full Text Available El arroyo El Siasgo es un afluente del río Salado, situado en la región NE de la provincia de Buenos Aires. En su cuenca inferior, su curso recorta una gran depresión, remanente de una antigua cuenca de deflación colmatada, donde se desarrollaron, desde el Pleistoceno superior, diversos ambientes sedimentarios, principalmente acuáticos. Actualmente, se desarrolla, en esta depresión, un ambiente léntico temporario de 2.750 ha, dividido en dos cuerpos mediante un estrechamiento de la cubeta de 2 km de largo y 0,7 km de ancho. Al norte del estrechamiento se sitúa el cuerpo menor, denominado "La Cañada" y hacia el sur el mayor o "laguna del Siasgo". En los sedimentos clásticos hospedantes de este paleoambiente léntico múltiple aparece una importante acumulación de yeso intrasedimentario en distintos niveles estratigráficos (Formaciones Lobos, Luján y La Postrera I, cristalizado principalmente en tamaño arena, con diversidad de hábitos, texturas, fábricas y estructuras. Los sedimentos hospedantes del yeso son esencialmente fangos, cuya textura original se encuentra modificada por la presencia del mineral epigénico en fangos y limos arenosos e incluso en arenas fangosas. Este depósito yesífero abarca una superficie de 25,6 km², con un espesor medio de 2,15 m en el subambiente "del Siasgo" y de 0,91 m en "La Cañada". El volumen de sedimentos con yeso alcanza a 48 hm³ y la ley mineral mínima es 53,5% en la "laguna del Siasgo", con un total de 53.623.000 de toneladas de yeso impuro, mientras que en "La Cañada, con una ley media de 20,1 %, solamente alcanza a 1.361.000 toneladas de yeso impuro. Cabe señalar, que la baja ley del mineral en "La Cañada" descarta su aprovechamiento como recurso económico, mientras que el yeso presente en el subambiente "del Siasgo" es de alta potencialidad para su explotación, incluso en su valor mínimo. Estos yesos son el producto de la interacción de aguas superficiales y subterr

  13. Soil and Water Conservation Strategies in Cape Verde (Cabo Verde in Portuguese and Their Impacts on Livelihoods: An Overview from the Ribeira Seca Watershed

    Directory of Open Access Journals (Sweden)

    Isaurinda Baptista

    2015-01-01

    Full Text Available Severe land degradation has strongly affected both people’s livelihood and the environment in Cape Verde (Cabo Verde in Portuguese, a natural resource poor country. Despite the enormous investment in soil and water conservation measures (SWC or SLM, which are visible throughout the landscape, and the recognition of their benefits, their biophysical and socioeconomic impacts have been poorly assessed and scientifically documented. This paper contributes to filling this gap, by bringing together insights from literature and policy review, field survey and participatory assessment in the Ribeira Seca Watershed through a concerted approach devised by the DESIRE project (the “Desire approach”. Specifically, we analyze government strategies towards building resilience against the harsh conditions, analyze the state of land degradation and its drivers, survey and map the existing SWC measures, and assess their effectiveness against land degradation, on crop yield and people’s livelihood. We infer that the relative success of Cape Verde in tackling desertification and rural poverty owes to an integrated governance strategy that comprises raising awareness, institutional framework development, financial resource allocation, capacity building, and active participation of rural communities. We recommend that specific, scientific-based monitoring and assessment studies be carried out on the biophysical and socioeconomic impact of SLM and that the “Desire approach” be scaled-up to other watersheds in the country.

  14. Sediment transport on the Palos Verdes shelf, California

    Science.gov (United States)

    Ferré, Bénédicte; Sherwood, Christopher R.; Wiberg, Patricia L.

    2010-04-01

    Sediment transport and the potential for erosion or deposition have been investigated on the Palos Verdes (PV) and San Pedro shelves in southern California to help assess the fate of an effluent-affected deposit contaminated with DDT and PCBs. Bottom boundary layer measurements at two 60-m sites in spring 2004 were used to set model parameters and evaluate a one-dimensional (vertical) model of local, steady-state resuspension, and suspended-sediment transport. The model demonstrated skill (Brier scores up to 0.75) reproducing the magnitudes of bottom shear stress, current speeds, and suspended-sediment concentrations measured during an April transport event, but the model tended to underpredict observed rotation in the bottom-boundary layer, possibly because the model did not account for the effects of temperature-salinity stratification. The model was run with wave input estimated from a nearby buoy and current input from four to six years of measurements at thirteen sites on the 35- and 65-m isobaths on the PV and San Pedro shelves. Sediment characteristics and erodibility were based on gentle wet-sieve analysis and erosion-chamber measurements. Modeled flow and sediment transport were mostly alongshelf toward the northwest on the PV shelf with a significant offshore component. The 95th percentile of bottom shear stresses ranged from 0.09 to 0.16 Pa at the 65-m sites, and the lowest values were in the middle of the PV shelf, near the Whites Point sewage outfalls where the effluent-affected layer is thickest. Long-term mean transport rates varied from 0.9 to 4.8 metric tons m -1 yr -1 along the 65-m isobaths on the PV shelf, and were much higher at the 35-m sites. Gradients in modeled alongshore transport rates suggest that, in the absence of a supply of sediment from the outfalls or PV coast, erosion at rates of ˜0.2 mm yr -1 might occur in the region southeast of the outfalls. These rates are small compared to some estimates of background natural sedimentation

  15. Neohyssura atlantica n.sp. from the Cape Verde Islands (Crustacea: Isopoda: Anthuridea)

    NARCIS (Netherlands)

    Wägele, Johann Wolfgang

    1987-01-01

    A fourth species of Neohyssura is described from a beach of a lagoon of Ilha do Sal (Cape Verde Islands). The species is blind and can easily be recognized by the oval, spinose outline of the telson and the spines on the uropodal endopod.

  16. Environmental Education Evaluation at the School: An Example in Sao Nicolau Island, Cape Verde

    Science.gov (United States)

    Graziani, Pietro; Cabral, Daniel; Santana, Nelson

    2013-01-01

    Monte Gordo Natural Park (MGNP) is part of the Cape Verde (CV) Protected Areas National Network. In order to create an effective Environmental Education (EE) curriculum, it is crucial to first identify the level of environmental knowledge of both teachers and students. In 2007 we implemented a set of four surveys to students and educators and…

  17. Immigration and Resiliency: Unpacking the Experiences of High School Students from Cape Verde and Ethiopia

    Science.gov (United States)

    Hersi, Afra Ahmed

    2011-01-01

    This article explores the complex factors, both individual and social, that contribute to the resiliency and academic achievement of six adolescent African immigrant students from Cape Verde and Ethiopia who were enrolled in a small high school in the United States. The school was designed specifically for recent adolescent immigrant students.…

  18. Geochemical stratigraphy of submarine lavas (3-5 Ma) from the Flamengos Valley, Santiago, Cape Verde

    DEFF Research Database (Denmark)

    Barker, Abigail K; Holm, Paul Martin; Peate, David W.;

    2009-01-01

    New high-precision Pb-Sr-Nd isotope, major and trace element and mineral chemistry data are presented for the submarine stage of ocean island volcanism on Santiago, one of the southern islands of the Cape Verde archipelago. Pillow basalts and hyaloclastites in the Flamengos Valley are divided...

  19. Promoting Distance Education in Higher Education in Cape Verde and Mozambique

    Science.gov (United States)

    Ramos, Fernando; Taju, Gulamo; Canuto, Louisette

    2011-01-01

    Over the past six years, the authors have been project leaders for three distance education initiatives in Cape Verde and Mozambique: (1) a blended learning master's degree in multimedia in education for faculty in Cape Verdean public higher education institutions (2005-2008); (2) a teacher training programme for 1375 elementary teachers provided…

  20. Marine interstitial Amphipoda and Isopoda (Crustacea) from Santiago, Cape Verde Islands

    NARCIS (Netherlands)

    Stock, Jan H.; Vonk, Ronald

    1992-01-01

    Three species of Amphipoda are recorded from interstices of a marine beach on the island of Santiago, Cape Verde Archipelago: Cabogidiella littoralis n. gen., n. sp. (Bogidiellidae), Psammogammarus spinosus n. sp. (Melitidae), and Idunella sketi Karaman, 1980 (Liljeborgiidae). The latter, widely dis

  1. Zoanthids of the Cape Verde Islands and their symbionts: previously unexamined diversity in the Northeastern Atlantic

    NARCIS (Netherlands)

    Reimer, J.D.; Hirose, M.; Wirtz, P.

    2010-01-01

    The marine invertebrate fauna of the Cape Verde Islands contains many endemic species due to their isolated location in the eastern Atlantic, yet research has not been conducted on most taxa here. One such group are the zoanthids or mat anemones, an order of benthic cnidarians (Hexacorallia: Zoantha

  2. The volcanic and geochemical development of São Nicolau, Cape Verde Islands

    DEFF Research Database (Denmark)

    Duprat, Helene Inga; Holm, Paul Martin; Sherson, Jacob Friis;

    2007-01-01

    We present 34 new age results from 40 Ar/39 Ar incremental heating analyses of groundmass separates from volcanic rocks from São Nicolau, Cape Verde. Combining the age results with field observations, we show that the volcanic activity that formed the island occurred in four separate stages: 1: >...

  3. A volcanological and geochemical investigation of Boa Vistta, Cape Verde Islands

    DEFF Research Database (Denmark)

    Dyhr, Charlotte Thorup; Holm, Paul Martin

    2009-01-01

    Boa Vista, the easternmost island in the Cape Verde archipelago, consists of volcanic products, minor intrusions and a thin partial sedimentary cover. The first 15 age results from 40Ar/39Ar incremental heating analysis of groundmass separates from volcanic and plutonic rocks from Boa Vista are p...

  4. 77 FR 9974 - Notice of Entering Into a Compact With the Republic of Cape Verde

    Science.gov (United States)

    2012-02-21

    ... promoting economic growth and the elimination of extreme poverty in Cape Verde and that MCC assistance under... poverty through economic growth (the ``Compact''). To this end, the Compact's two projects are intended to... advance the goal of reducing poverty through economic growth, the Compact will fund two projects. The...

  5. Lotus alianus, a new species from Cabo Verde and nomeenclatural notes on Lotus section Pedrosia (Fabaceae)

    Science.gov (United States)

    Lotus alianus J.H. Kirkbr., sp. nov., is described and illustrated. It is a rare endemic species from the Republic of Cape Verde, and is found in dry habitats on just two islands, Ilhas de Santo Antao and Sao Vicente. In addition, two species names are synonymized with L. creticus L., and a lectotyp...

  6. Distribution of HLA alleles in Portugal and Cabo Verde. Relationships with the slave trade route.

    Science.gov (United States)

    Spínola, H; Brehm, A; Williams, F; Jesus, J; Middleton, D

    2002-07-01

    HLA-A, -B, and -DR frequencies were analysed in populations from Portugal and the Madeira and Cabo Verde Archipelagos, aiming to characterize their genetic composition. Portuguese settlers colonized both Archipelagos in the 15th and 16th centuries. Madeira received many sub-Saharan slaves to work in the sugar plantations, and Cabo Verde served as a pivotal market in the Atlantic slave trade and was populated by individuals coming from the Senegambia region of the West African coast. The population of Madeira shows the highest genetic diversity and the presence of alleles and haplotypes usually linked to sub-Saharan populations, the haplotypes accounting for 3.5% of the total. Cabo Verde presents typical markers acknowledged to be of European or Ibero-Mediterranean origin, thus revealing the admixture of European settlers with Sub-Saharan slaves. Altogether the number of European haplotypes reaches 15% of the total. The Portuguese population shows a perceivable and significant heterogeneity both in allele and haplotype frequencies, unveiling a differential input of peoples from different origins. A PCA of the populations studied, plus other relevant ones, clearly shows gene heterogeneity in mainland Portugal as well as the differences and relationships between these populations and Madeira and Cabo Verde. PMID:12418969

  7. Improving rainwater-use in Cabo Verde drylands by reducing runoff and erosion

    NARCIS (Netherlands)

    Santos Baptista Costa, Dos I.; Ritsema, C.J.; Querido, A.; Ferreira, A.D.; Geissen, V.

    2015-01-01

    Dryland agriculture in Cabo Verde copes with steep slopes, inadequate practices, irregular intense rain, recurrent droughts, high runoff rates, severe soil erosion and declining fertility, leading to the inefficient use of rainwater. Maize and beans occupy > 80% of the arable land in low-input, l

  8. Further information on the Dohrn-Keulemans collection of birds from the Cape Verde Islands

    NARCIS (Netherlands)

    Hazevoet, C.J.; Fischer, S.

    1996-01-01

    Until recently, only one specimen from the series of syntypes of the Cape Verde Cane Warbler Acrocephalus brevipennis, collected by H. Dohrn and J.G. Keulemans in 1865, was known to be still in existence. Another specimen belonging to this series has now been discovered in the collections of the Ber

  9. Tetrapocillon atlanticus n.sp. (Porifera, Poecilosclerida) from the Cape Verde Islands

    NARCIS (Netherlands)

    Soest, van R.W.M.

    1988-01-01

    A representative of the rare genus Tetrapocillon Brondsted (1924) was found for the first time in the Atlantic Ocean, dredged at 70 m depth during the recent CANCAP VII Expedition to the Cape Verde Islands. The single specimen differed from the previously known Indo-Pacific specimens of the genus (

  10. Verde urbano e processi ambientali: per una progettazione di paesaggio multifunzionale

    Directory of Open Access Journals (Sweden)

    Raffaele Pelorosso

    2013-04-01

    Full Text Available L’impermeabilizzazione delle superfici determina un’alterazione del sistema idrologico, con un incremento dei volumi e dei picchi dei deflussi delle acque meteoriche. Il fenomeno è destinato a progredire, sia per il contributo che vi deriva dalla costante crescita delle superfici urbanizzate (urban sprawl, sia per i cambiamenti climatici in atto, che accentuano la frequenza delle piogge critiche. Una serie di misure e tecniche (Best Management Practices, BMPs sono state sviluppate per la gestione sostenibile delle acque meteoriche urbane. Alcune  BMPs (es: verde pensile, bacini di detenzione/ritenzione, zone umide possono svolgere inoltre una funzione ecologica (divenendo habitat per specie animali e vegetali, di termoregolazione, estetica e di promozione del capitale sociale. È quindi necessario sperimentare metodologie di progettazione e gestione del verde urbano e periurbano, la cui multifunzionalità consente di perseguire la strada della sostenibilità ambientale. Su tale traccia, questo lavoro presenta un percorso metodologico orientato a valutare alcune strategie integrate di controllo dei deflussi urbani, attraverso l’aumento della permeabilità di alcune parti sensibili di città. Il verde, quindi, non è visto come semplice infrastruttura necessaria a soddisfare generici standard urbanistici, ma ne sono analizzate le funzionalità, in questa prima fase di carattere idrologico, ma che, in prospettiva, con la stessa armatura verde, esso può assumere un ruolo ecologico, sociale, di mitigazione del clima e di emissione di gas clima-alteranti.

  11. An 40 Ar- 39 Ar study of the Cape Verde hot spot

    DEFF Research Database (Denmark)

    Holm, Paul Martin; Grandvuinet, Tanja; Wilson, James Richard;

    2008-01-01

    Cretaceous age for limestones deposited on the seafloor and later uplifted. The Cape Verde Rise is indicated to have fully formed in the early Miocene around 22 Ma, accompanied by the initial alkaline volcanism. Considerable volcanism on Sal, Boa Vista, and Maio took place in the Miocene and Pliocene...

  12. Assessment of tight-gas resources in Canyon sandstones of the Val Verde Basin, Texas, 2016

    Science.gov (United States)

    Schenk, Christopher J.; Tennyson, Marilyn E.; Klett, Timothy R.; Mercier, Tracey J.; Brownfield, Michael E.; Gaswirth, Stephanie B.; Hawkins, Sarah J.; Leathers-Miller, Heidi M.; Marra, Kristen R.; Finn, Thomas M.; Pitman, Janet K.

    2016-07-08

    Using a geology-based assessment methodology, the U.S. Geological Survey assessed mean resources of 5 trillion cubic feet of gas and 187 million barrels of natural gas liquids in tight-gas assessment units in the Canyon sandstones of the Val Verde Basin, Texas.

  13. Optimizing soil and water management in dryland farming systems in Cabo Verde

    NARCIS (Netherlands)

    Santos Baptista Costa, Dos I.

    2016-01-01

     “Optimizing Soil and Water Management in Dryland Farming Systems in Cabo Verde” Isaurinda Baptista Summary Soil and land degradation poses a great challenge for sustainable development worldwide and, in Cabo Verde, has strongly affected both people

  14. Survey of ICT and Education in Africa : Cape Verde Country Report

    OpenAIRE

    Tutu, Osei Agyeman

    2007-01-01

    This short country report, a result of larger Information for Development Program (infoDev)-supported survey of Information and Communication Technologies (ICT) in education in Africa, provides a general overview of current activities and issues related to ICT use in education in the country. Cape Verde has made significant strides in the implementation of ICTs in education. The drawback o...

  15. Evolución y dinámica de la barrera medanosa entre los arroyos Zabala y Claromecó, partidos de San Cayetano y Tres Arroyos, Buenos Aires Evolution and dynamics of the dune bar of San Cayetano and Tres Arroyos counties, Buenos Aires

    Directory of Open Access Journals (Sweden)

    L.C. Cortizo

    2007-11-01

    Full Text Available Se analiza un tramo del litoral sudeste de la provincia de Buenos Aires a través del análisis digital de fotografías del satélite Corona del año 1965 e imágenes del sensor Landsat TM (1999-2000. Datos complementarios concernientes a factores climáticos y morfología de playas fueron añadidos para el entendimiento de la dinámica eólica y de las formas medanosas resultantes. El proceso más importante fue la reducción en volumen de las formas medanosas reconocidas como semifijas y fijas al año 1965 (28% en la franja analizada de 70 x 3 km fundamentalmente por efectos del incremento en la humedad y reducción del aporte sedimentario. Se evidenció una variación en la dirección de los vientos predominantes del norte (1951-1960 al noroeste (1951-1990 que modificó la orientación de las crestas y favoreció la transición de médanos transversos barjanoides a parabólicos. La intensidad del viento del sector SO durante el período analizado fue el responsable de que las geoformas medanosas se mantengan en posición a expensas de una continua degradación. El efecto antrópico se ha centrado en la implantación de especies arbóreas para fijar las dunas así como para el desarrollo turístico (balnearios Claromecó, Orense y San Cayetano abarcando 50 Km² de una franja de 210 km²; aunque no hay efectos antrópicos que alteren la dinámica litoral. Se corroboró un aumento en las condiciones de humedad del suelo (aumento en las precipitaciones del 20% lo cual evidenció el rol de la vegetación en el control del campo de dunas.The coastal area of San Cayetano and Tres Arroyos counties was analyzed by mean of modern Landsat TM images (1999- 2000 and Corona satellite photographs of the year 1965. Data concerning climatic factors and beach morphology were added in order to understand aeolian dynamics and morphology of coastal dunes. The most important feature recognized was the reduction in volume of the dunes recognized as semi-fixed and

  16. From introduced American weed to Cape Verde Islands endemic: the case of Solanum rigidum Lam. (Solanaceae, Solanum subgenus Leptostemonum).

    Science.gov (United States)

    Knapp, Sandra; Vorontsova, Maria S

    2013-01-01

    A Solanum species long considered an American introduction to the Cape Verde Islands off the west coast of Africa is identified as Solanum rigidum, a member of the Eggplant clade of Old World spiny solanums (Solanum subgenus Leptostemonum) and is probably endemic to the Cape Verde Islands. Collections of this species from the Caribbean are likely to have been introduced from the Cape Verde Islands on slave ships. We discuss the complex nomenclatural history of this plant and provide a detailed description, illustration and distribution map. The preliminary conservation status of Solanum rigidum is Least Concern, but needs to be reassessed in light of its endemic rather than introduced status. PMID:24198710

  17. Larvicidal activity against Aedes aegypti of Foeniculum vulgare essential oils from Portugal and Cape Verde.

    Science.gov (United States)

    Rocha, Diara Kady; Matosc, Olivia; Novoa, Maria Teresa; Figueiredo, Ana Cristina; Delgado, Manuel; Moiteiro, Cristina

    2015-04-01

    Dengue is a potentially fatal mosquito-borne infection with 50 million cases per year and 2.5 billion people vulnerable to the disease. This major public health problem has recurrent epidemics in Latin America and occurred recently in Cape Verde and Madeira Island. The lack of anti-viral treatment or vaccine makes the control of mosquito vectors a high option to prevent virus transmission. Essential oil (EO) constituents can affect insect's behaviour, being potentially effective in pest control. The present study evaluated the potential use of Foenicultm vulgare (fennel) EO in the control of the dengue vector Aedes aegypti. EOs isolated from fennel aerial parts collected in Cape Verde and from a commercial fennel EO of Portugal were analysed by NMR, GC and GC-MS. trans-Anethole (32 and 30%, respectively), limonene (28 and 18%, respectively) and fenchone (10% in both cases) were the main compounds identified in the EOs isolated from fennel from Cape Verde and Portugal, respectively. The larvicidal activity of the EOs and its major constituents were evaluated, using WHO procedures, against third instar larvae ofAe. aegypti for 24 h. Pure compounds, such as limonene isomers, were also assayed. The lethal concentrations LC50, C90 and LC99 were determined by probit analysis using mortality rates of bioassays. A 99% mortality of Ae. aegypti larvae was estimated at 37.1 and 52.4 µL L-1 of fennel EOs from Cape Verde and Portugal, respectively. Bioassays showed that fennel EOs from both countries displayed strong larvicidal effect against Ae. aegypti, the Cape Verde EO being as active as one of its major constituents, (-)-limonene. PMID:25973508

  18. Restauración ecológica y paisajística del Arroyo de los Quiñones. San Sebastián de los Reyes, Madrid

    Directory of Open Access Journals (Sweden)

    Peinado Albendea, Pedro

    1996-04-01

    Full Text Available The restoration of the Arroyo (stream de los Quiñones (San Sebastián de los Reyes poses a problem whose solution consists in neutralizing the principal sources of its degradation. These sources are: waste water discharges, an urban solid waste dump, situated in the very bed of the stream, and the intensive aggregate extraction which made the stream itself disappear at various points. This article also deals with the recuperation of the surrounding wood in a natural and landscape-friendly way, which would facilitate the access and the walk along the sides of the stream. This would lead to the clearing of other areas of a high ecological value within this municipality.

    La restauración del Arroyo de los Quiñones (San Sebastián de los Reyes, Madrid plantea como problema resolver sus principales fuentes de degradación. Estas son los vertidos de aguas residuales, un vertedero de residuos sólidos urbanos ubicado en el cauce, y la intensiva extracción de áridos que ha llegado a hacer desaparecer el arroyo en diversas zonas. Posteriormente se plantea la recuperación del bosque ripario de una forma lo más natural paisajísticamente, facilitando el acceso y el paseo para des congestionar otras zonas de alto valor ecológico del término municipal.

  19. Chemometric Characterization of Alembic and Industrial Sugar Cane Spirits from Cape Verde and Ceará, Brazil

    Directory of Open Access Journals (Sweden)

    Regina F. R. Pereira

    2012-01-01

    Full Text Available Sugar cane spirits are some of the most popular alcoholic beverages consumed in Cape Verde. The sugar cane spirit industry in Cape Verde is based mainly on archaic practices that operate without supervision and without efficient control of the production process. The objective of this work was to evaluate samples of industrial and alembic sugar cane spirits from Cape Verde and Ceará, Brazil using principal component analysis. Thirty-two samples of spirits were analyzed, twenty from regions of the islands of Cape Verde and twelve from Ceará, Brazil. Of the samples obtained from Ceará, Brazil seven are alembic and five are industrial spirits. The components analyzed in these studies included the following: volatile organic compounds (n-propanol, isobutanol, isoamylic, higher alcohols, alcoholic grade, acetaldehyde, acetic acid, acetate; copper; and sulfates.

  20. Human factors engineering control-room-design review/audit report: Palo Verde Nuclear Generating Station, Arizona Public Service Company

    Energy Technology Data Exchange (ETDEWEB)

    Savage, J.W.; Lappa, D.A.

    1981-10-09

    A human factors engineering design review of the Palo Verde control room simulator was performed at the site on September 15 through September 17, 1981. Observed human factors design discrepancies were given priority ratings. This report summarizes the team's observations of the control room design and layout and of the control room operators' interface with the control room environment. A list of the human factors strengths observed in the Palo Verde control room simulator is given.

  1. EFECTO DE LA INTERACCIÓN ABONO VERDE-DOSIS DE NITRÓGENO

    Directory of Open Access Journals (Sweden)

    Margarita García

    2000-01-01

    Full Text Available Con el objetivo de cuantificar el aporte de N en unidades fertilizantes del abono verde C anavalia ensiformis en rotación con la papa, se llevó a cabo un experimento de campo en el período 1992-1995 sobre un suelo Ferralítico Rojo de La Habana. Los tratamientos consistieron en la combina- ción factorial del uso o no del abono verde con cinco dosis de N (0, 40, 80, 120 y 160 kg.ha –1 , distribuidas en el campo de acuerdo con un diseño de parcelas divididas y cinco répli- cas. Los resultados mostraron respuestas positivas de la papa a la aplicación de N, a la incorporación del abonado verde y a la integración de ambas alternativas. La magnitud de la respuesta a la aplicación de diferentes dosis de N estuvo en dependencia del uso o no del abono verde. En este sentido, en la campaña 1992-1993 con el uso de la canavalia se encon- traron rendimientos máximos de 33 t.ha -1 con sólo la aplica- ción de 53 kg.ha -1 de N (32 % de la dosis máxima; en la cam- paña 1994-1995, por su parte, se encontraron los máximos rendimientos (29 t.ha -1 con sólo la aplicación de 67 kg.ha -1 de N (50 % de la dosis máxima. Con el uso de la canavalia como abono verde solo, se obtuvieron rendimientos de la papa de 25 t.ha -1 equivalentes a la aplicación de 80 kg.ha -1 de N. Cuando no se emplearon los abonos verdes, la respuesta a la fertilización nitrogenada fue lineal, encontrándose los máximos rendimientos (34.8 t.ha -1 en la campaña 1992-1993 con la apli cación de 160 kg.ha -1 de N, siendo estos de 29 t.ha -1 con la aplicación de 130 kg.ha -1 en la campaña 1994-1995.

  2. Modernization of electric power systems of the Laguna Verde Nuclear Power Plant; Modernizacion de los sistemas electricos de potencia de la Central Nuclear de Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Gabaldon, M. A.; Gonzalez, J. J.; Prieto, I.

    2011-07-01

    The Power Increase Project of Laguna Verde Nuclear Plant has entailed the replacement, in one unique outage, of the main power electrical systems of the Plant (Isolated Phase Bars, Generator Circuit Breaker and Main Transformer) as well as the replacement of the Turbo-group. The simultaneous substitution of these entire system has never been done by any other Plant in the world, representing an engineering challenge that embraced the design of the new equipment up to the planning, coordination and management of the construction and commissioning works, which were successfully carried out by Iberdrola within the established outage period /47 days) for both units. (Author)

  3. Corredores verdes urbanos: estudo da viabilidade de conexão das áreas verdes de Vitória

    Directory of Open Access Journals (Sweden)

    Homero Marconi Penteado

    2007-12-01

    Full Text Available Grande parte dos profissionais de planejamento urbano tem buscado melhorar a qualidade de vida da população e a aplicação de princípios de sustentabilidade, que se refletem, na maioria dos casos, na busca de ampliação das áreas verdes, sejam na forma de parques, praças, arborização de vias ou mesmo incentivo aos jardins particulares. Esta pesquisa apresenta o resultado do estudo de viabilidade de criação de corredores verdes urbanos na cidade de Vitória, estabelecendo uma rede de conexões utilizando-se de sua malha viária, visando incrementar as condições ecológicas e paisagísticas urbanas e melhores condições de circulação de pedestres e ciclistas. Está alicerçada nos conceitos desenvolvidos pela ecologia da paisagem, baseada em fragmentos, corredores e matriz. A metodologia adotada foi aplicada em uma área teste, onde foram realizados levantamentos preliminares, mapeamento das áreas verdes, seleção de vias para implantação de corredores, avaliação dos possíveis corredores, inventário e análise das vias, diretrizes para estabelecimento dos corredores, ensaio projetual e criação de uma rede de corredores verdes. Dentre os principais resultados, verificou-se a possibilidade de criação de corredores com pequenas modificações nos perfis de vias que permitiriam a inserção de vegetação contínua, calçadas e ciclovias com consequências diretas (otimização das condições microclimáticas, melhoria na paisagem, atratividade para pequenos animais, incentivo ao percurso não motorizado, entre outros e indiretas (redução das partículas em suspensão, redução dos níveis de ruído e do consumo de combustíveis etc..

  4. Caracterización morfométrica de la cuenca alta del arroyo Las Lajas, Córdoba: Un análisis estadístico

    Directory of Open Access Journals (Sweden)

    N. Doffo

    2005-03-01

    Full Text Available En base a un análisis estadístico de los principales parámetros morfomé tricos, se hace una caracterización hidrológica de la cuenca alta del arroyo Las Lajas. En particular se discute la influencia de la estructura y litología sobre el diseño de la red de drenaje. La cuenca alta del arroyo Las Lajas drena una superficie aproximada de 41 km² y se desarrolla sobre un basamento plutónico-metamórfico del Precámbrico-Paleozoico superior. El relieve está conformado por serranías bajas, valles de fondo plano, con relleno aluvial y coluvial. La precipitación media anual es de 860 mm. La forma de la cuenca está parcialmente controlada por la Falla Las Lajas. Los parámetros morfométricos utilizados son: densidad de drenaje, frecuencia de cursos de primer orden, rugosidad de la cuenca, relación de bifurcación, relación de longitudes y relación de elongación. Estos se aplicaron a subcuencas de tercer orden, agrupadas en un sector oriental y otro occidental, delimitados por la Falla Las Lajas. De cada parámetro medido se obtuvieron estadísticos de posición y de dispersión y se realizaron, previa prueba de normalidad y de correlación, tests estadísticos, análisis de agrupamiento y factorial. El resultado no demuestra que exista un control litológico sobre el diseño de la red de drenaje. Un análisis de agrupamiento sobre las subcuencas indica una división en dos conjuntos que no muestran una relación obvia con la estructura ni la litología del sustrato.

  5. Evaluación de la vulnerabilidad del acuífero libre en la cuenca del arroyo El cura, Gualeguaychú, Entre ríos

    Directory of Open Access Journals (Sweden)

    Pamela Boujon

    2014-06-01

    Full Text Available El trabajo analiza la cuenca del arroyo El Cura, ubicada al sur de la ciudad de Gualeguaychú, Entre Ríos, donde se encuentra el relleno sanitario municipal. Con el objetivo de evaluar la vulnerabilidad a la contaminación del acuífero libre, se estudió la geología y la hidrogeología del área. Se identificaron dos niveles loéssicos (Formaciones Hernandarias y Tezanos Pinto de edad pleistocena media y superior respectivamente, que contienen al acuífero freático. A partir de la piezometría, se pudo determinar el carácter efluente del arroyo, con dirección principal del flujo subterráneo de SO a NE y, gradientes hidráulicos regionales del orden de 0,0016. Pudo verificarse que la salinidad del agua subterránea se incrementa en esa dirección. Se observó una relación directa entre las unidades geomorfológicas definidas para la cuenca (PL, PA y TPRG y la química del agua subterránea, que evoluciona de bicarbonatada cálcica en PL a bicarbonatada sódica en PA y TPRG. La relación entre los niveles piezométricos y la hidroquímica subterránea permitieron inferir zonas de recarga y descarga. Se aplicaron tres metodologías (EKv, GOD y GODS para establecer áreas vulnerables a la contaminación y el grado de vulnerabilidad de la cuenca. El método más efectivo fue el GODS, obteniéndose tres grados de vulnerabilidad asociadas básicamente a las unidades geomorfológicas (alta para TPRG; moderada para PA y baja para PL, y a las litologías que las componen. Asimismo, pudo observarse que las áreas más vulnerables están asociadas con los niveles piezométricos más bajos.

  6. Determinantes da inflação numa pequena economia aberta : o caso de Cabo Verde

    OpenAIRE

    Pina, João Emanuel Brito Ledo de

    2008-01-01

    Mestrado em Economia Monetária e Financeira O Acordo de Cooperação Cambial entre Cabo Verde e Portugal de Março de 1998 veio criar profundas alterações no regime de política monetária em Cabo Verde. É normalmente citado que, se um pequeno país optar por um regime de paridade fixa em relação a uma moeda dominante, esse país impõe a si próprio uma disciplina que consiste basicamente em subordinar a sua política monetária à do país da referida moeda dominante e em manter equiparadas as respec...

  7. X-chromosome STR markers data in a Cabo Verde immigrant population of Lisboa.

    Science.gov (United States)

    Afonso Costa, Heloísa; Morais, Paulo; Vieira da Silva, Cláudia; Matos, Sara; Marques Santos, Rodolfo; Espinheira, Rosa; Costa Santos, Jorge; Amorim, António

    2014-01-01

    Population genetic data of 12 X chromosomal short tandem repeats markers (DXS10074, DXS10079, DXS10101, DXS10103, DXS10134, DXS10135, DXS10146, DXS10148, DXS7132, DXS7423, DXS8378 and HPRTB) were analysed in 54 females and 95 males of an immigrant population from Cabo Verde living in Lisboa. The obtained results for forensic statistical parameters such as observed heterozigosity, polymorphism information content, power of discrimination and mean exclusion chance, based on single allele frequencies, reveal that this multiplex system is highly informative and can represent an important tool for genetic identification purposes in the immigrant population of Cabo Verde. Since the studied short tandem repeats genetic markers are distributed on four linkage groups, that can provide independent genotype information, we studied those groups as haploytes. The forensic efficiency parameters for the linked groups were all higher than 0.97, with linkage group I being the most polymorphic and linkage group III the less informative. PMID:24474659

  8. Start up and commercial operation of Laguna Verde nuclear power plant. Unit 1

    International Nuclear Information System (INIS)

    Prior to start up of Laguna Verde nuclear power plant preoperational tests and start tests were performed and they are described in its more eminent aspects. In relation to commercial operation of nuclear station a series of indicator were set to which allow the measurement of performance in unit 1, in areas of plant efficiency and personal safety. Antecedents. Laguna Verde station is located in Alto Lucero municipality in Veracruz state, 70 kilometers north-northeast from port of Veracruz and a 290 kilometers east-northeast from Mexico city. The station consist of two units manufactured by General Electric, with a nuclear system of vapor supply also called boiling water (BWR/5), and with a system turbine-generator manufactured by Mitsubishi. Each unit has a nominal power of 1931 MWt and a level design power of 675 Mwe and a net power of 654 Electric Megawatts

  9. Analysis of internal events for the Unit 1 of the Laguna Verde Nuclear Power Station. Appendixes

    International Nuclear Information System (INIS)

    This volume contains the appendices for the accident sequences analysis for those internally initiated events for Laguna Verde Unit 1, Nuclear Power Plant. The appendix A presents the comments raised by the Sandia National Laboratories technical staff as a result of the review of the Internal Event Analysis for Laguna Verde Unit 1 Nuclear Power Plant. This review was performed during a joint Sandia/CNSNS multi-day meeting by the end 1992. Also included is a brief evaluation on the applicability of these comments to the present study. The appendix B presents the fault tree models printed for each of the systems included and.analyzed in the Internal Event Analysis for LVNPP. The appendice C presents the outputs of the TEMAC code, used for the cuantification of the dominant accident sequences as well as for the final core damage evaluation. (Author)

  10. Metrópoles, cobertura vegetal, áreas verdes e saúde

    Directory of Open Access Journals (Sweden)

    Luís Fernando Amato-Lourenço

    2016-04-01

    Full Text Available A falta de planejamento no processo de urbanização das grandes metrópoles tem produzido numerosas externalidades negativas, entre elas a supressão de sua cobertura vegetal e de áreas verdes. Inúmeros benefícios têm sido reportados sobre como a presença da vegetação no meio ambiente urbano favorece fatores ambientais, sociais e econômicos, influenciando na saúde da população. O presente trabalho busca apresentar uma série de estudos com enfoque na associação entre áreas verdes e saúde e também uma sucinta reflexão sobre a importância do assunto no município de São Paulo.

  11. Patterns of genetic diversity in three plant lineages endemic to the Cape Verde Islands.

    Science.gov (United States)

    Romeiras, Maria M; Monteiro, Filipa; Duarte, M Cristina; Schaefer, Hanno; Carine, Mark

    2015-01-01

    Conservation of plant diversity on islands relies on a good knowledge of the taxonomy, distribution and genetic diversity of species. In recent decades, a combination of morphology- and DNA-based approaches has become the standard for investigating island plant lineages and this has led, in some cases, to the discovery of previously overlooked diversity, including 'cryptic species'. The flora of the Cape Verde archipelago in the North Atlantic is currently thought to comprise ∼740 vascular plant species, 92 of them endemics. Despite the fact that it is considered relatively well known, there has been a 12 % increase in the number of endemics in the last two decades. Relatively few of the Cape Verde plant lineages have been included in genetic studies so far and little is known about the patterns of diversification in the archipelago. Here we present an updated list for the endemic Cape Verde flora and analyse diversity patterns for three endemic plant lineages (Cynanchum, Globularia and Umbilicus) based on one nuclear (ITS) and four plastid DNA regions. In all three lineages, we find genetic variation. In Cynanchum, we find two distinct haplotypes with no clear geographical pattern, possibly reflecting different ploidy levels. In Globularia and Umbilicus, differentiation is evident between populations from northern and southern islands. Isolation and drift resulting from the small and fragmented distributions, coupled with the significant distances separating the northern and southern islands, could explain this pattern. Overall, our study suggests that the diversity in the endemic vascular flora of Cape Verde is higher than previously thought and further work is necessary to characterize the flora. PMID:25979965

  12. Reducing volcanic risk on Fogo Volcano, Cape Verde, through a participatory approach: which outcome?

    OpenAIRE

    P. Texier-Teixeira; Chouraqui, F.; A. Perrillat-Collomb; Lavigne, F.; J. R. Cadag; Grancher, D.

    2014-01-01

    This research paper presents the outcomes of Work Package 5 (socio-economical vulnerability assessment and community-based disaster risk reduction) of the MIAVITA (MItigate and Assess risk from Volcanic Impact on Terrain and human Activities) research programme conducted on Fogo Volcano, Cape Verde. The study lasted for almost 3 years (May 2010 to January 2012), of which most of the time was spent in the village of Chã das Caldeiras, situated within the 9 km wide caldera ...

  13. The last whale : rise and demise of shore-based whaling in the Cape Verde Islands

    OpenAIRE

    Cabral, José J.; Hazevoet, Cornelis J.

    2015-01-01

    For two centuries, the seas of the Cape Verde archipelago were a favorite whaling ground – known as the ‘San Antonio Ground’ among whalers – for an international fleet of whaling ships and especially for the "Yankee whalers" from New England, USA. One of their main targets was the humpback whale Megaptera novaeangliae, of which large numbers were caught (e.g. Clark 1887, Townsend 1935, Reeves et al. 2002, Smith & Reeves 2003, 2010).

  14. Risk-based inservice testing program modifications at Palo Verde nuclear generating station

    Energy Technology Data Exchange (ETDEWEB)

    Knauf, S.; Lindenlaub, B.; Linthicum, R.

    1996-12-01

    Arizona Public Service Company (APS) is investigating changes to the Palo Verde Inservice Testing (IST) Program that are intended to result in the reduction of the required test frequency for various valves in the American Society of Mechanical Engineers (ASME) Section XI IST program. The analytical techniques employed to select candidate valves and to demonstrate that these frequency reductions are acceptable are risk based. The results of the Palo Verde probabilistic risk assessment (PRA), updated in June 1994, and the risk significant determination performed as part of the implementation efforts for 10 CFR 50.65 (the maintenance rule) were used to select candidate valves for extended test intervals. Additional component level evaluations were conducted by an `expert panel.` The decision to pursue these changes was facilitated by the ASME Risk-Based Inservice Testing Research Task Force for which Palo Verde is participating as a pilot plant. The NRC`s increasing acceptance of cost beneficial licensing actions and risk-based submittals also provided incentive to seek these changes. Arizona Public Service is pursuing the risk-based IST program modification in order to reduce the unnecessary regulatory burden of the IST program through qualitative and quantitative analysis consistent with maintaining a high level of plant safety. The objectives of this project at Palo Verde are as follows: (1) Apply risk-based technologies to IST components to determine their risk significance (i.e., high or low). (2) Apply a combination of deterministic and risk-based methods to determine appropriate testing requirements for IST components including improvement of testing methods and frequency intervals for high-risk significant components. (3) Apply risk-based technologies to high-risk significant components identified by the {open_quotes}expert panel{close_quotes} and outside of the IST program to determine whether additional testing requirements are appropriate.

  15. Insecticide susceptibility of Aedes aegypti populations from Senegal and Cape Verde Archipelago

    Directory of Open Access Journals (Sweden)

    Dia Ibrahima

    2012-10-01

    Full Text Available Abstract Background Two concomitant dengue 3 (DEN-3 epidemics occurred in Cape Verde Archipelago and Senegal between September and October 2009. Aedes aegypti was identified as the vector of these epidemics as several DEN-3 virus strains were isolated from this species in both countries. The susceptibility to pyrethroids, organochlorine, organophosphates and carbamate was investigated in two field strains of Aedes aegypti from both countries using WHO diagnostic bioassay kits in order to monitor their the current status of insecticide susceptibility. Findings The two tested strains were highly resistant to DDT. The Cape Verde strain was found to be susceptible to all others tested insecticides except for propoxur 0.1%, which needs further investigation. The Dakar strain was susceptible to fenitrothion 1% and permethrin 0.75%, but displayed reduced susceptibility to deltamethrin, lambda-cyhalothrin and propoxur. Conclusions As base-line results, our observations stress a careful management of insecticide use for the control of Ae. aegypti. Indeed, they indicate that DDT is no longer efficient for the control of Ae. aegypti populations in Cape Verde and Dakar and further suggest a thorough follow-up of propoxur susceptibility status in both sites and that of deltamethrin and lambda-cyhalothrin in Ae. aegypti populations in Dakar. Thus, regular monitoring of susceptibility is greatly needed as well as the knowing if this observed resistance/susceptibility is focal or not and for observed resistance, the use of biochemical methods is needed with detailed comparison of resistance levels over a large geographic area. Keywords Aedes aegypti, Insecticides, Susceptibility, Cape Verde, Senegal

  16. Three Continents, one Language: Studying English in a Portuguese Landscape (Brazil, Cape Verde and Portugal)

    OpenAIRE

    Azuaga, Luísa; Cavalheiro, Lili

    2012-01-01

    Unlike other languages, English has spread to all continents and become a truly global language, a process observable in countries, like Brazil, Cape Verde, and Portugal, located in three different continents, and sharing a common official language: Portuguese. This relatively recent development has contributed to the wide exposure to English and the growing influence of the language in their societies, being used with lingua franca communicative purposes, which raises pedagogical issues. Our...

  17. Potencial del techo verde, para ahorrar electricidad por aire acondicionado en la edificación

    Directory of Open Access Journals (Sweden)

    Ruber Trujillo Samayoa

    2015-01-01

    Full Text Available Introducción: Tanto en México como en el mundo, más de tres cuartas partes de los insumos que se usan en la producción de electricidad provienen de fuentes no renovables, en una realidad donde los techos de las edificaciones son responsables de un consumo importante de electricidad por aire acondicionado. Por lo anterior, el objetivo fue evaluar el aspecto térmico y la eficiencia en el consumo de electricidad de dos aires acondicionados colocados, bajo el Techo de concreto reforzado y el Techo verde, y a la vez utilizar a la geometría analítica como herramienta de análisis en el consumo de electricidad. Método: Aunque inicialmente la metodología de la climatología dinámica, fue desarrollada para el análisis térmico, en este trabajo se retomó para aplicarlo al consumo eléctrico y conjuntándolo con el apoyo de la geometría analítica, a través de ecuaciones de recta que representan promedios anuales, se evidenció las diferencias en el consumo. Resultados: Los resultados obtenidos demuestran que el Techo verde amortigua mejor las temperaturas exteriores, reduce la oscilación térmica y; en el consumo eléctrico, con una diferencia promedio anual de un 28%, el Techo Verde consumió menos energía eléctrica por aire acondicionado. Discusión o conclusión: Se demuestra que conviene el uso de techos verdes en el sitio de estudio y posibilita su aplicación en otros contextos. El trabajo se realizó en periodos de temperaturas extremas opuestas, invierno de 2014 y primavera de 2015.

  18. Insecticide susceptibility of Aedes aegypti populations from Senegal and Cape Verde Archipelago

    OpenAIRE

    Dia Ibrahima; Diagne Cheikh; Ba Yamar; Diallo Diawo; Konate Lassana; Diallo Mawlouth

    2012-01-01

    Abstract Background Two concomitant dengue 3 (DEN-3) epidemics occurred in Cape Verde Archipelago and Senegal between September and October 2009. Aedes aegypti was identified as the vector of these epidemics as several DEN-3 virus strains were isolated from this species in both countries. The susceptibility to pyrethroids, organochlorine, organophosphates and carbamate was investigated in two field strains of Aedes aegypti from both countries using WHO diagnostic bioassay kits in order to mon...

  19. Thirteen new records of marine invertebrates and two of fishes from Cape Verde Islands

    Directory of Open Access Journals (Sweden)

    WIRTZ, P.

    2009-01-01

    Full Text Available The sea anemones Actinoporus elegans Duchassaing, 1850 and Anthothoe affinis (Johnson, 1861 are new records from Cape Verde Islands. Also new to the marine fauna of Cape Verde are an undescribed mysid species of the genus Heteromysis that lives in associationwith the polychaete Branchiomma nigromaculata, the shrimp Tulearicoaris neglecta Chace, 1969 that lives in association with the sea urchin Diadema antillarum, an undescribed nudibranch of the genus Hypselodoris, and two undescribed species of the parasitic gastropod genus Melanella and Melanella cf. eburnea. An undescribedplathelmint of the genus Pseudobiceros, the nudibranch Phyllidia flava (Aradas, 1847 and the parasitic gastropod Echineulima leucophaes (Tomlin & Shackleford, 1913 are recorded, based on colour photos taken in the field. The crab Nepinnotheres viridis Manning, 1993 was encountered in the bivalve Pseudochama radians, which represents the first host record for this pinnotherid species. The nudibranch Tambja anayana, previously only known from a single animal, was reencountered and photographed alive. The sea anemone Actinoporus elegans, previously only known from the western Atlantic, is also reported here from São Tomé Island. In addition, the bythiid fish Grammonus longhursti and an undescribed species of the genus Apletodon are recorded from the Cape Verde Islands for the first time.

  20. Improving Access to Pediatric Cardiology in Cape Verde via a Collaborative International Telemedicine Service.

    Science.gov (United States)

    Lapão, Luís Velez; Correia, Artur

    2015-01-01

    This paper addresses the role of international telemedicine services in supporting the evacuation procedures from Cape Verde to Portugal, enabling better quality and cost reductions in the management of the global health system. The Cape Verde, as other African countries, health system lacks many medical specialists, like pediatric cardiologists, neurosurgery, etc. In this study, tele-cardiology shows good results as diagnostic support to the evacuation decision. Telemedicine services show benefits while monitoring patients in post-evacuation, helping to address the lack of responsive care in some specialties whose actual use will help save resources both in provision and in management of the evacuation procedures. Additionally, with tele-cardiology collaborative service many evacuations can be avoided whereas many cases will be treated and followed locally in Cape Verde with remote technical support from Portugal. This international telemedicine service enabled more efficient evacuations, by reducing expenses in travel and housing, and therefore contributed to the health system's improvement. This study provides some evidence of how important telemedicine really is to cope with both the geography and the shortage of physicians. PMID:25980705

  1. Genetic differentiation of the Cabo Verde archipelago population analysed by STR polymorphisms.

    Science.gov (United States)

    Fernandes, A T; Velosa, R; Jesus, J; Carracedo, A; Brehm, A

    2003-07-01

    Allele frequencies for 17 STR loci were analyzed in a sample of unrelated males from the Cabo Verde Archipelago. The samples were gathered in such a way that the origin of the subjects was perfectly identified, and they could be included in one of the leeward or windward groups of islands. This study reveals that there are significant differences between both groups of islands, and between Cabo Verdeans and other populations from sub-Sahara Africa including the Guineans, the most probable source population for Cabo Verdeans. This study confirms mtDNA data and, together with HLA and Y chromosome data already published, shows that the Cabo Verde population is sub-structured and atypical, diverging substantially from mainland sub-Saharan populations. Overall these differences are most probably due to admixture between sub-Saharan slaves brought into the islands and other settlers of European origin. In the absence of a clear indication of a different ethnic composition of the first sub-Saharan settlers of Cabo Verde, the differentiation exhibited in both groups of islands can be most probably be attributed to genetic drift. PMID:12914568

  2. Marketing verde e práticas socioambientais nas indústrias do Paraná

    Directory of Open Access Journals (Sweden)

    Valéria Neder Lopes

    2014-03-01

    Full Text Available A preocupação das empresas com o meio ambiente e com todas as questões sociais envolvidas em seu processo tem se tornado uma constante nos últimos tempos. Devido a isso, estão surgindo novas formas de administrar os recursos disponíveis. Nesse contexto, enquadra-se o marketing verde que deve estar pautado em práticas ambientalmente corretas, com o intuito de gerar produtos e serviços mais sustentáveis, fortalecendo a imagem das empresas e diferenciando suas marcas no mercado. O intuito neste trabalho foi verificar se as grandes indústrias do Paraná estão se utilizando das práticas de marketing verde e se mantêm projetos de gestão socioambiental. Para atender a tais objetivos, elaborou-se uma pesquisa descritiva e quantitativa com 48 grandes empresas cadastradas na Federação das Indústrias do Paraná. Os resultados obtidos indicam que a maior parte das empresas possui departamento de marketing formalizado, mantém sistemas de gestão ambiental e utiliza moderadamente práticas de marketing verde.

  3. Origin of the springs of Costa Verde beach in Lima Peru

    CERN Document Server

    Rojas, Ruben; Mamani, Enoc; Maguina, Jose; Montoya, Eduardo; Baltuano, Oscar; Bedregal, Patricia; Coria, Lucy; Guerra, Alcides; Justo, Santiago; Churasacari, Tania

    2013-01-01

    This paper tries to determine the origin of springs on the Costa Verde beach, located in the district of Barranco, Miraflores and Magdalena, province of Lima, Peru. These springs emerge near the shoreline, from the lower layers of a 80 meter high cliff. They have survived the process of urbanization of agricultural land, started in the early 70, which decreased the water table aquifer of Lima, and wiped the water leaks from the cliffs. To identify the source of the springs, isotopic, physical, chemical and bacteriological analysis was carried out for samples from five springs. The isotopic concentrations in waters from Costa Verde springs are depleted compared to those obtained for Lima aquifer waters, which is recharged by infiltration of the Rimac River. The measured values of those concentrations suggest that water from the Costa Verde springs should come from a direct recharge in the upper and middle basin, due to infiltration of rainfall or the river at an altitude of about 3600 m. Conductivity and tempe...

  4. Characterization of the aeolian aerosol from Cape Verde by k0-INAA and PIXE

    International Nuclear Information System (INIS)

    Due to its location on West Coast of Africa, Cape Verde is highly influenced by Sahara Desert dust events being an optimum place to observe and study the African aeolian aerosol. During 2011, particulate matter with an aerodynamic diameter lower than 10 μm (PM10) was sampled in Santiago Island and its chemical composition was evaluated by k0-instrumental neutron activation analysis (k0-INAA) and particle induced X-ray emission (PIXE). This study showed the existence of a seasonal intrusion of dust from Africa (that occurred from October to March) characterized by significant increases of PM10, mineral elements and anthropogenic particles concentrations. In 2011, the PM10 health-based air quality guidelines defined by WHO, EU and USEPA were exceeded. Cape Verde PM10 composition was characterized essentially by high concentrations of elements originating from the soil (Ca, Ce, Co, Fe, K, Mg, Mn, Rb, S, Sc, Si, Sm, and Ti) and sea (Br, Cl, and Na); and low concentrations of anthropogenic elements (As, Cr, Cu, Ni, Pb, Sb, V, and Zn). k0-INAA and PIXE were fundamental tools for the determination of airborne chemical elements in Cape Verde. Their multi-elemental capabilities in association with low detection limits made it possible to determine the majority of the element concentrations of environmental interest. (author)

  5. EL IMAGINARIO "VERDE" Y EL VERDE URBANO COMO INSTRUMENTO DE CONSUMO INMOBILIARIO: CONFIGURANDO LAS CONDICIONES AMBIENTALES DEL ÁREA METROPOLITANA DE SANTIAGO

    Directory of Open Access Journals (Sweden)

    Felipe Irarrázaval Irarrázaval

    2012-01-01

    Full Text Available La mercantilización e instrumentalización de diversos elementos y procesos naturales ha condicionado perfectas plataformas para la acumulación de riquezas. Esto ha sido posible en la medida que existen las condiciones políticas, sociales y económicas para que suceda. Además, en el caso de las condiciones ambientales urbanas, se suma un "imaginario verde" en un amplio espectro de la población, la cual presenta un gran interés por vivir en espacios dotados de naturaleza. Estas condiciones han determinado que en las ciudades se desarrolle una desigual distribución de las condiciones ambientales, dado que cuando la gestión urbana queda en manos del sector privado, sólo las elites con poder adquisitivo pueden acceder a áreas verdes y al arbolado urbano. La presente investigación busca reconocer a la naturaleza urbana como un "instrumento de consumo" inmobiliario, así como sus implicancias en la distribución de las condiciones ambientales en Santiago de Chile. Para esto se reconoce el espacio urbano en ciudades capitalistas como un eslabón dentro de las plataformas de acumulación de capital. A su vez, se integra la perspectiva de los imaginarios ofertados/empleados por el sector inmobiliario como un tema central para concretar la plataforma de acumulación.

  6. The continuous improvement system of nuclear power plant of Laguna Verde; El sistema de mejora continua de la central nucleoelectrica Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Rivera C, A. [Comision Federal de Electricidad, Central Nucleoelectrica Laguna Verde, Km. 42.5 Cardel-Nautla, Veracruz (Mexico)], e-mail: arr99999@cfe.gob.mx

    2009-10-15

    This paper describes the continuous improvement system of nuclear power plant of Laguna Verde and the achievements in implementing the same and additionally two study cases are presents. In February 2009 is noteworthy because the World Association of Nuclear Operators we identified as a learning organization, qualification which shows that the continuous improvement system has matured, and this system will expose as I get to learn to capitalize on our own experiences and external experiences diffused by the nuclear industry. In 2007 the management of nuclear power plants integrates its improvement systems and calls it continuous improvement system and is presented in the same extensive report that won the National Quality Award. This system is made up of 5 subsystems operating individually and are also related 1) human performance; 2) referential comparison or benchmarking; 3) self-assessment; 4) corrective action and 5) external operating experience. Five subsystems that plan, generate, capture, manage, communicate and protect the knowledge generated during the processes execution of nuclear power plant of Laguna Verde, as well as from external sources. The target set in 2007 was to increase the intellectual capital to always give response to meeting the security requirements, but creating a higher value to quality, customer, environment protection and society. In brief each of them, highlighting the objective, expectations management, implementation and some benefits. At the end they will describe two study cases selected to illustrate these cases as the organization learns by their continuous improvement system. (Author)

  7. Cleófilas and La Llorona: Latin Heroines Against Patriarchal Marginalisation in ‘El arroyo de la Llorona’, a Short Story by Sandra Cisneros

    Directory of Open Access Journals (Sweden)

    Luis fernando Gómez R

    2012-08-01

    Full Text Available This paper discusses the short story ‘El arroyo de la Llorona’ by female Mexican-American writer Sandra Cisneros. In it the main character, Cleófilas, is subject to social, emotional and economic dependence on her husband, according to the cultural constructs on female identity that are still relevant in Latin-American patriarchal societies. Due to her circumstances of complete marginalisation and domestic violence, Cleófilas chooses to avoid reality, and this avoidance not only costs her mental well-being,but also annuls her will to make changes to her suffocating life. Oppressed by a patriarchal system,Cleófilas develops an unusual interest in the Llorona legend and, through the remembrance of this myth, these two female figures become symbols of resistance and liberation. In the story, the Llorona ceases to be the denigrated woman tradition has always made her out to be, and becomes the image of a contemporary heroine capable of challenging radical patriarchal norms.

  8. La Preparación Física Profesional en tabaqueros de la Fábrica Serafín Sánchez Valdivia en Arroyo Blanco.

    Directory of Open Access Journals (Sweden)

    Luis Bécquer Quesada

    2009-10-01

    Full Text Available La preparación física profesional es un proceso especializado y dirigido al desarrollo de las capacidades físicas, psíquicas y de hábitos motores en los trabajadores, lo que resulta imprescindible para elevar la efectividad y la capacidad de trabajo. Para el presente trabajo se elaboró un sistema de ejercicios (contracción muscular, flexibilidad para contribuir al mejoramiento de la preparación física profesional en los tabaqueros, de la fábrica Serafín Sánchez Valdivia en Arroyo Blanco. En esta investigación se tomó una población integrada por los 39 tabaqueros de la entidad y como muestra 10 de ellos, lo que representa el (25.64%. El Objeto de estudio de esta investigación es el Proceso de Preparación para la Salud de los Tabaqueros y como métodos se utilizó el Teórico (análisis-síntesis, histórico-lógico, inductivo-deductivo y Enfoque de sistema, Empíricos: la observación, encuesta, entrevista y Validación mediante consulta a especialistas.

  9. Origin and Population Dynamics of a Novel HIV-1 Subtype G Clade Circulating in Cape Verde and Portugal.

    Science.gov (United States)

    de Pina-Araujo, Isabel Inês M; Delatorre, Edson; Guimarães, Monick L; Morgado, Mariza G; Bello, Gonzalo

    2015-01-01

    The human immunodeficiency virus type 1 (HIV-1) subtype G is the most prevalent and second most prevalent HIV-1 clade in Cape Verde and Portugal, respectively; but there is no information about the origin and spatiotemporal dispersal pattern of this HIV-1 clade circulating in those countries. To this end, we used Maximum Likelihood and Bayesian coalescent-based methods to analyze a collection of 578 HIV-1 subtype G pol sequences sampled throughout Portugal, Cape Verde and 11 other countries from West and Central Africa over a period of 22 years (1992 to 2013). Our analyses indicate that most subtype G sequences from Cape Verde (80%) and Portugal (95%) branched together in a distinct monophyletic cluster (here called G(CV-PT)). The G(CV-PT) clade probably emerged after a single migration of the virus out of Central Africa into Cape Verde between the late 1970s and the middle 1980s, followed by a rapid dissemination to Portugal a couple of years later. Reconstruction of the demographic history of the G(CV-PT) clade circulating in Cape Verde and Portugal indicates that this viral clade displayed an initial phase of exponential growth during the 1980s and 1990s, followed by a decline in growth rate since the early 2000s. Our data also indicate that during the exponential growth phase the G(CV-PT) clade recombined with a preexisting subtype B viral strain circulating in Portugal, originating the CRF14_BG clade that was later disseminated to Spain and Cape Verde. Historical and recent human population movements between Angola, Cape Verde and Portugal probably played a key role in the origin and dispersal of the G(CV-PT )and CRF14_BG clades. PMID:25993094

  10. Early alert system for oscillations detection applied to the Central of Laguna Verde; Sistema de alerta temprana para deteccion de oscilaciones aplicada a la Central Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Calleros M, G.; Zapata Y, M.; Avila N, A.; Herrera H, S. F., E-mail: gcm9acpp@cfe.gob.mx [Comision Federal de Electricidad, Central Nucleoelectrica Laguna Veder, Carretera Cardel-Nautla Km 42.5, Alto Lucero, Veracruz (Mexico)

    2011-11-15

    The code Early Alert System developed by Engineering of the Reactor of the nuclear power plant of Laguna Verde is presented, showing its reliability like preventive and corrective instrument to external interferences to the reactor core, due to equipment malfunction associated to the typical systems of a nuclear power plant, as those that control the reactor pressure, those that feed water to the reactor, those that control the valves of the main turbine. With this purpose, real cases of application of the System are shown where the results are compared with the independent evaluations carried out by the supplier, observing compatibility in both results. The benefits of the logarithm are discussed in the nuclear industry as soon as in non nuclear ambits. (Author)

  11. Popular conceptions of schizophrenia in Cape Verde, Africa Concepções populares da esquizofrenia em Cabo Verde, África

    Directory of Open Access Journals (Sweden)

    Mário Dinis Mateus

    2005-06-01

    Full Text Available INTRODUCTION: It has been well documented that schizophrenia presents a better clinical course in developing countries. Although there are many epidemiological studies showing this association, little research has been conducted to investigate the local representation systems for schizophrenia in these countries. OBJECTIVES: This study focuses on cultural factors of schizophrenia, namely the local representation systems for the disease, as well as what is locally understood as deviant behavior and its acceptability, and mechanisms of social-cultural insertion or exclusion of patients with schizophrenia in Cape Verde, Africa. METHODS: Randomized open interviews were carried out with the relatives of patients under treatment at the mental health out patient service of the Batista de Sousa Hospital (São Vicente Island between the years 1994 and 1995. Interviews dealt with patients' life histories and disease related to problems, strategies employed by the family to cope with such problems, and comments on the social and family burden. RESULTS: 20 interviews with close relatives of 10 patients were analyzed. The study focused on three main categories explaining schizophrenia: "tired head" (cabeça cansada, "nervous" (nervoso, and supernatural categories (like "sorcery" or "witchcraft". The interviewees expressed their opinions, either explicitly or not, on whether their relatives truly had a disease. CONCLUSION: Characteristics of local categories for schizophrenia found in Cape Verde can be regarded as a less stigmatized way of dealing with the disease. It is reasonable to suppose that the understanding of such cultural factors could lead to better outcomes in the treatment for schizophrenia in this country, and also in others, where similar conditions can be identified.INTRODUÇÃO: Tem sido bem documentado que a esquizofrenia apresenta um melhor curso clínico em países em desenvolvimento. Ainda que haja muitos estudos epidemiol

  12. Flujo de barro del arroyo del Comedero, Jujuy: caracterización, causas y efectos The mudflow of the Comedero stream, Jujuy: Characterization, causes and effects

    Directory of Open Access Journals (Sweden)

    Maria A González

    2012-09-01

    Full Text Available El 12 de Enero de 2010 un flujo de barro afectó un predio de esparcimiento con piletas de aguas termales en la localidad de Termas de Reyes, provincia de Jujuy. Este evento dejó 87 heridos y produjo grandes daños materiales. Las lluvias fueron las desencadenantes del movimiento del material a través de la quebrada del arroyo del Comedero. El depósito del flujo estuvo constituido por casi el 70% de grava, 20% de arena y 10% de limo arcilla y transportó trozos de materia orgánica y bloques mayores a 1 m³. Debido a la plasticidad del material, se lo clasificó como flujo de barro. La velocidad del movimiento se calculó usando un método empírico, coincidiendo su resultado con otros obtenidos en eventos cercanos. El volumen fue medido directamente en el campo, y calculado a través de ecuaciones enunciadas para flujos similares. Según los registros históricos de los depósitos de diferentes eventos ocurridos en la quebrada del arroyo del Comedero, esta se ubica en un rango de probabilidad muy alta de que se produzcan flujos. Con respecto a la clasificación de la magnitud del flujo de barro sobre el río Reyes, este pertenece a la clase con consecuencias potenciales de destrucción parcial de poblados, infraestructura de rutas y puentes, y bloqueo de quebradas. Los datos de velocidad, volumen y frecuencia calculados en este trabajo, que forman parte de la Carta de Peligrosidad Geológica Salta del SEGEMAR, son necesarios para el mapeo de peligrosidad, la programación de obras de infraestructura y la planificación territorial.The January 12th 2010 mudflow in the Comedero stream, Termas de Reyes, province of Jujuy, affected a hot springs recreational area causing 87 wounded people and severe material damage. This mass movement was triggered by sudden rainfall in the high sectors of the creek in Comedero stream. The resulting deposit was made up by approximately 70 % gravel, 20 % sand and 10 % lime-clay, and included transported wood

  13. Can erosion control structures in large dryland arroyo channels lead to resilient riparian and cienega restoration? Observations from LiDAR, monitoring and modeling at Rancho San Bernardino, Sonora, MX

    Science.gov (United States)

    DeLong, S.; Henderson, W. M.

    2012-12-01

    The use of erosion control structures to mitigate or even reverse erosion and to restore ecological function along dryland channels (arroyos and gullies) has led to a long list of both successful and failed restoration efforts. We propose that successful implementation of "engineering" approaches to fluvial restoration that include in-channel control structures require either a quantitative approach to design (by scientists and engineers), or intimate on-the-ground knowledge, local observation, and a commitment to adapt and maintain restoration efforts in response to landscape change (by local land managers), or both. We further propose that the biophysical interactions among engineering, sedimentation, flood hydrology and vegetation reestablishment are what determine resilience to destructive extreme events that commonly cause erosion control structure failure. Our insights come from comprehensive monitoring of a remarkable experiment underway at Ranch San Bernardino, Sonora, MX. At this site, private landowners are working to restore ecosystem function to riparian corridors and former cieñega wetlands using cessation of grazing; vegetation planting; upland grass restoration; large scale rock gabions (up to 100 m wide) to encourage local sediment deposition and water storage; and large earthen berms (up to 900 m wide) with cement spillways that form reservoirs that fill rapidly with water and sediment. Well-planned and managed erosion control structures have been used elsewhere successfully in smaller gully networks, but we are unaware of a comparable attempt to use gabions and berms for the sole purpose of ecological restoration along >10 km of arroyo channels draining watersheds on the order of ~400 km2 and larger. We present an approach to monitoring the efficacy of arroyo channel restoration using terrestrial and airborne LiDAR, remote sensing, streamflow monitoring, shallow groundwater monitoring, hydrological modeling and field observation. Our methods

  14. Análisis del control geológico en la torrencialidad del arroyo Las Lajas, Córdoba, a través de la modelización hidrológica

    OpenAIRE

    Nelso C. Doffo; Carlos F. Eric; Gustavo González Bonorino

    2010-01-01

    Se analiza la incidencia de factores litológicos, estructurales y bióticos en la respuesta hidrológica (torrencialidad) de una cuenca hídrica serrana aplicando el modelo matemático ARHymo. La cuenca alta del arroyo Las Lajas se encuentra en las sierras de Comechingones, entre 1.200 y 750 m s.n.m., con una superficie de 41 km2 y una red de drenaje de orden de Horton 6. La morfología de la cuenca está fuertemente controlada por la traza de la falla Las Lajas, una estructura de actividad recient...

  15. El depósito de sulfuros masivos polimetálicos de Arroyo Rojo, Tierra del Fuego (Argentina): Mineralogía, geoquímica y metalogenia

    OpenAIRE

    Biel Soria, Cecilia; Subías Pérez, Ignacio Ernesto; Acevedo, Rogelio Daniel

    2011-01-01

    El objetivo de esta tesis es avanzar en el conocimiento de la geología y modelos de alteración hidrotermal de los yacimientos de sulfuros masivos de los Andes Fueguinos. Para ello se ha seleccionado el depósito de Arroyo Rojo, el más representativo del cinturón Río Encajado-Río Hambre (Tierra del Fuego, Argentina). Este depósito encaja en la parte volcánica y volcanoclástica de la Formación Lemaire, de edad jurásica media, compuesta de base a techo por: riolitas, dacitas, ignimbritas, tobas y...

  16. Restauración ecológica y paisajística del Arroyo de los Quiñones. San Sebastián de los Reyes, Madrid

    OpenAIRE

    Peinado Albendea, Pedro; Villafañe, Juan Pablo

    1996-01-01

    The restoration of the Arroyo (stream) de los Quiñones (San Sebastián de los Reyes) poses a problem whose solution consists in neutralizing the principal sources of its degradation. These sources are: waste water discharges, an urban solid waste dump, situated in the very bed of the stream, and the intensive aggregate extraction which made the stream itself disappear at various points. This article also deals with the recuperation of the surrounding wood in a natural and landscape-friend...

  17. Judges of peace, masons and conservatives on Buenos Airesïcountryside. An approximation to the personal links on the south of the Buenos Airesïprovince (Tres Arroyos, 1865-1910 Jueces de paz, masones y conservadores en la campaña bonaerense: Una aproximación a las redes vinculares en el sur de la provincia de Buenos Aires [Tres Arroyos, 1865-1910

    Directory of Open Access Journals (Sweden)

    Leandro A. Di Gresia

    2010-01-01

    Full Text Available The purpose of this article is to analyze the way in which Justice of the Peace was implemented in Buenos Aires Province, Argentina, between 1865 and 1910, through the study of the subjects who acted in such capacity and the political framework in which they took part. The work was carried out taking into account one particular Justice of the Peace Office, the one located at Tres Arroyos County. On the one hand, the profile of the subjects who acted as Justices of the Peace is reconstructed so as to understand the logics guiding the appointment thereof. For this, research work is done in order to reconstruct their biographies associated to the different terms of office and local institutionalization. Then, two grouping modes that served as a relational basis for local individuals and that allowed to complete the explanation developed from individual biographies are identified: an initiation ritual-type network, as it was the case of masonry, and a local conservatism network, managed by local and powerful ranch and farm owners. Finally, it is observed if these networks had an influence on local justice administration. The sources used are several local commemorative albums, census data, local newspapers, criminal records brought before the Justice of the Peace in Tres Arroyos, the Copybook of the Justice of the Peace Office, and the Book of Records of Tres Arroyos Hiram Lodge.Este artículo se propone analizar la forma en que se implantó la Justicia de Paz en el interior de la provincia de Buenos Aires entre 1865 y 1910, a través del estudio de los sujetos que desempeñaron esa función y los entramados políticos en los que participaron. El mismo se ha realizado a partir del estudio de un Juzgado en particular, como fue el del partido de Tres Arroyos. Por un lado, se reconstruye el perfil de los sujetos que ejercieron el cargo de Jueces de Paz, con la intención de entender las lógicas que guiaron su designación. Para ello, se indaga en la

  18. 30 years in the Veracruz state coast landscape: Laguna Verde nuclear power station. 1. ed.; 30 anos de paisaje costero veracruzano: Central Nucleoelectrica Laguan Verde

    Energy Technology Data Exchange (ETDEWEB)

    Guevara, S; Moreno Casasola, P; Castillo Campos, G; Dorantes, C; Gonzalez Garcia, F; Halffter, G; Isunza, E; Lot H, A; Mendoza, R; Paradowska, K; Priego, A; Sanchez Vigil, C; Vazquez, G [Comision Federal de Electricidad and Instituto Nacional de Ecologia A.C. (Mexico)

    2008-07-01

    36 years ago one of the most important power projects of Mexico was born; the design and construction of the Nuclear power station Laguna Verde. This project became reality thanks to the commitment of a group of Mexican professionals that gave the best of them for its accomplishment. At that time, there was not in Mexico a legislation that contemplated the environmental protection; nevertheless, the Mexican Constitution anticipates that when in the country there is not legislation for the development of a project, this must adopt the legislation of the country that is selling it. In the specific case of Laguna Verde, the legislation of the United States of America was adopted and in the environmental part it had to issue the first Manifest of Environmental impact, that was called Informe Ambiental para la Contruccion de Laguna Verde en el Estado de Veracruz. This study was performed by several national as well as foreign institutions. Among the most outstanding are the Universidad Nacional Autonoma de Mexico, the Intituto Politecnico Nacional, the Universidad Veracruzana, the Intituto National para la Investigacion de Recursos Biologicos, the Instituto de Ecologia, A.C. With this report, the engineers undertook the task of designing and constructing, the biologists and ecologists to realize the studies to mitigate the effects caused to the environment during the construction and later, during the operation of the Nuclear power station. After 18 years of commercial operation of the power station the present book is completed, in which the results obtained in 1972, when the studies of the environmental report began are compared against the ones obtained throughout this period. It is important to see in the results of the different studies and indicators presented/displayed in this book, that the important changes on the environment are due, to the change of the ground use and the over-exploitation of the natural resources as it happens in almost all the country. The

  19. Electrical Systems at Laguna Verde Nuclear Power Plant (LVNPP) after the Fukushima accident

    International Nuclear Information System (INIS)

    During the accident occurred in Fukushima Daiichi Nuclear Power Station in Japan, the onsite and offsite electrical systems were affected and lost for a long time with irreversible consequences, therefore, the Mexican Regulatory Body known as the National Commission for Nuclear Safety and Safeguards (CNSNS: for its acronym in Spanish) has taken several actions to review the current capacity of the electrical systems installed at Laguna Verde NPP to cope with an event beyond of the design basis. The first action was to require to Laguna Verde NPP the compliance with Information Notice 2011-05 'Tohoku-Taiheiyou-Oki earthquake effects on Japanese Nuclear Power Plants' and with 10 CFR 50.54 'Conditions of licenses' section 'hh', both documents were issued by the United States Nuclear Regulatory Commission (USNRC). Additionally, CNSNS has taken into account the response actions emitted by other countries after the Fukushima accident. This involved the review of documents generated by Germany, Canada, United Arab Emirates, Finland, France, the United Kingdom and the Western European Nuclear Regulator's Association (WENRA). CNSNS made special inspections to verify the current capacity of the electrical systems of AC and DC. As a result of these inspections, CNSNS issued requirements that must be addressed by Laguna Verde NPP to demonstrate that it has the capacity to cope with events beyond the design basis. Parallel to the above, Mexico has participated in the Ibero-american Forum to address matters related to the 'Resistance Tests', the evaluations of the Forum have reached similar conclusions to those required by European Nuclear Safety Regulators Group (ENSREG), under the format proposed by WENRA. The actions carried out here are closely linked to the requirements established by the USNRC. It is also important to mention that: 1) the Extended Power Up-rate project was implemented in both Units of the Laguna Verde NPP before

  20. Negative sequence relay applied to generator 1 of the Laguna Verde nuclear power plant; Aplicacion de un relevador de secuencia negativa en el generador 1 de la central de Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Diaz de la Serna P, Enrique [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1988-12-31

    The rotor of a synchronous generator can be dangerously heated in a short time by stator current unbalance, therefore it must be protected with a specific relay. This article discusses the protection and the adjustments selected for Unit 1 of the Comision Federal de Electricidad Laguna Verde Nuclear Nuclear Power Station. [Espanol] El rotor de un generador sincrono puede calentarse peligrosamente en un tiempo corto debido a desbalance de corrientes en el estator, por lo que debe protegerse con un relevador especifico. En este articulo se describen la proteccion y los ajustes seleccionados para la unidad 1, de la central nucleoelectrica Laguna Verde de la Comision Federal de Electricidad.

  1. Fibra da casca do coco verde como substrato agrícola

    Directory of Open Access Journals (Sweden)

    Carrijo Osmar Alves

    2002-01-01

    Full Text Available A produção comercial de mudas e o cultivo sem solo de hortaliças estão se tornando práticas comuns entre os olericultores. Vários materiais orgânicos como as turfas, resíduos de madeira, casca de pinus e de arroz parcialmente carbonizada ou não, ou materiais inorgânicos como areia, rochas vulcânicas, perlita, lã de rocha e a espuma fenólica já são utilizados como substratos, isoladamente ou em composição. A casca de coco verde que em muitas regiões causa transtorno ao serviço de limpeza pública pelo volume e pela dificuldade de decomposição produz uma fibra que pode ser utilizada como substrato. Para a produção da fibra, a casca de coco verde é picada, desfibrada, triturada, lavada e secada. Para o uso como substrato na produção de mudas, a fibra deve passar por um processo de compostagem. Este processo não é necessário para o uso como substrato em cultivo sem solo, mas no entanto, o substrato necessitará ser enriquecido com nutrientes em pré-plantio ou em fertirrigação. O uso do substrato da fibra de coco verde na produção de tomate em casa de vegetação, alcançou, em termos absolutos, 13,2 kg m-2 de frutos comerciais (média de 3 anos cerca de 7,3% mais que o segundo melhor substrato, o pó de serra com 12,3 kg m-2.

  2. Internal event analysis for Laguna Verde Unit 1 Nuclear Power Plant. Accident sequence quantification and results

    International Nuclear Information System (INIS)

    The Level 1 results of Laguna Verde Nuclear Power Plant PRA are presented in the Internal Event Analysis for Laguna Verde Unit 1 Nuclear Power Plant, CNSNS-TR 004, in five volumes. The reports are organized as follows: CNSNS-TR 004 Volume 1: Introduction and Methodology. CNSNS-TR4 Volume 2: Initiating Event and Accident Sequences. CNSNS-TR 004 Volume 3: System Analysis. CNSNS-TR 004 Volume 4: Accident Sequence Quantification and Results. CNSNS-TR 005 Volume 5: Appendices A, B and C. This volume presents the development of the dependent failure analysis, the treatment of the support system dependencies, the identification of the shared-components dependencies, and the treatment of the common cause failure. It is also presented the identification of the main human actions considered along with the possible recovery actions included. The development of the data base and the assumptions and limitations in the data base are also described in this volume. The accident sequences quantification process and the resolution of the core vulnerable sequences are presented. In this volume, the source and treatment of uncertainties associated with failure rates, component unavailabilities, initiating event frequencies, and human error probabilities are also presented. Finally, the main results and conclusions for the Internal Event Analysis for Laguna Verde Nuclear Power Plant are presented. The total core damage frequency calculated is 9.03x 10-5 per year for internal events. The most dominant accident sequences found are the transients involving the loss of offsite power, the station blackout accidents, and the anticipated transients without SCRAM (ATWS). (Author)

  3. Pb-Sr-He isotope and trace element geochemistry of the Cape Verde Archipelago

    Science.gov (United States)

    Doucelance, Régis; Escrig, Stéphane; Moreira, Manuel; Gariépy, Clément; Kurz, Mark D.

    2003-10-01

    New lead, strontium and helium isotopic data, together with trace element concentrations, have been determined for basalts from the Cape Verde archipelago (Central Atlantic). Isotopic and chemical variations are observed at the scale of the archipelago and lead to the definition of two distinct groupings, in keeping with earlier studies. The Northern Islands (Santo Antão, São Vicente, São Nicolau and Sal) present Pb isotopic compositions below the Northern Hemisphere Reference Line (NHRL) (cf. Hart, 1984), unradiogenic Sr and relatively primitive 4He/ 3He ratios. In contrast, the Southern Islands (Fogo and Santiago) display Pb isotopes above the NHRL, moderately radiogenic Sr and MORB-like helium signatures. We propose that the dichotomy between the Northern and Southern Islands results from the presence of three isotopically distinct components in the source of the Cape Verde basalts: (1) recycled ˜1.6-Ga oceanic crust (high 206Pb/ 204Pb, low 87Sr/ 86Sr and high 4He/ 3He); (2) lower mantle material (high 3He); and (3) subcontinental lithosphere (low 206Pb/ 204Pb, high 87Sr/ 86Sr and moderately radiogenic 4He/ 3He ratios). The signature of the Northern Islands reflects mixing between recycled oceanic crust and lower mantle, to which small proportions of entrained depleted material from the local upper mantle are added. Basalts from the Southern Islands, however, require the addition of an enriched component thought to be subcontinental lithospheric material instead of depleted mantle. The subcontinental lithosphere may stem from delamination and subsequent incorporation into the Cape Verde plume, or may be remnant from delamination just before the opening of the Central Atlantic. Basalts from São Nicolau reflect the interaction with an additional component, which is identified as oceanic crustal material.

  4. Estudo do feijão verde (Vigna unguiculata (L Walp minimamente processado

    Directory of Open Access Journals (Sweden)

    FURTUNATO Andréa A

    2000-01-01

    Full Text Available Visando definir tecnologias alternativas de processamento do feijão verde (Vigna unguiculata (L Walp, estudou-se o processo de congelamento do mesmo. Este consistiu na recepção da matéria prima, seleção dos grãos de coloração e tamanho uniformes, seguida de lavagem em água corrente e branqueamento por imersão em água a 90ºC. Os grãos foram acondicionados em sacos plásticos e congelados em freezer doméstico a -18ºC, sendo armazenados a essa temperatura. Foi realizado o estudo de vida de prateleira desse produto por 180 dias, através de análises físico-químicas, microbiológicas e sensoriais, preservando-se em boas condições para o consumo. Foi realizado também o teste de aceitação do produto comparando-se com o feijão verde fresco. Embora o nível de aceitação não tenha sido muito alto (71,1% quando comparado com o feijão fresco (96,6%, este resultado poderia ser diferente em regiões que não têm o hábito de consumir esta leguminosa no estádio de maturação verde fresco.

  5. Legitimacy and Innovation in Mining: the case of the Oro Verde Program

    Directory of Open Access Journals (Sweden)

    Mariana Sarmiento

    2013-11-01

    Full Text Available The paper describes how the Oro Verde Program emerged, and how it has gained recognition as an innovative program that has successfully promoted improved social and environmental practices for small scale miners. The paper describes the local and regional context where the miners from Oro Verde are from, and attempts to explain how it waspossible for two afro-colombian communities, two NGOs and a government agency to find alternative arrangements to overcome the challenges that result from the complexities of the Choco region in Colombia. The paper argues that one factor of success is the interaction among participants to create a Non-State Market Driven Governance System. In the case of the Oro Verde Program, the norms created by the international system surrounding sustainable development were necessary for allowing the NGOs to bring financial resources into the project as well as opening the doors to isolated communities in Choco to an international market that valued sustainably produced products. Similarly, the national policies surrounding Green Markets and the existence of a government research institution, made the certification process possible and legitimate. Finally, having a law that recognized land rights to afro-Colombian communities and the community councils as local authorities, as well as customary laws about natural resource use and access within these territories was key for the viability of the project. All of these organizations, working as a nested governance system, that respected and embraced different but interdependent norms and interests, were key for the consolidation of a NSMD that has resonated throughout the world and that has become an element of some afro-Colombians’ struggle to protect their rights for self-determination.

  6. Island Freeboard Reconstructions for the Cape Verde Archipelago Using the Geological Record

    Science.gov (United States)

    Ramalho, R.; Helffrich, G.; Cosca, M.; Vance, D.; Schmidt, D. N.; Hoffmann, D.

    2008-12-01

    Ocean island freeboard of the Cape Verde Archipelago off the west coast of Northern Africa is contemporaneous with volcanism as determined by uplift of paleo sea-level markers over the 25 Ma history of hotspot activity. Whereas the growth and decay of ocean island volcanoes is accompanied by buoyancy- driven vertical movements such as: a) aging of the underlying lithosphere; b) lithospheric flexural response to surface and sub-surface loading and volume redistribution by mass-wasting; and c) volume changes from hotspot dynamics, tracking island freeboard through geological time potentially provides constraints on the relative importance of these different processes for lithospheric behavior and island building in response to hotspot activity. The Cape Verde Archipelago is unique among major hotspots due to its semi-stationary position and because it sits on the largest bathymetric anomaly in the oceans - the Cape Verde rise. Paleo sea-level markers include shallow marine carbonate terraces, beach deposits, submarine volcanic units, and lava deltas and marine abrasion surfaces. Using high-precision laser step heating Ar-Ar and U-Th disequilibrium geochronological methods, we dated a set of raised submarine volcanic flows, lava-deltas and terraces from the islands. By tracking the relative sea-level changes within the islands (using the age and the present elevation of the markers), and comparing them with the eustatic sea-level curve, we found evidence for substantial vertical movements accompanying volcanism, at rates ranging from 35-100m/Ma over the last ~6 Ma. The maximum vertical displacement is +450 m for Santiago Island. We deduce that island freeboard is contemporaneous with volcanism, and are currently evaluating parameters that account for total freeboard and differential uplift observed among the islands.

  7. Arquitetura, património e turismo: o caso da Cidade Velha Cabo Verde

    OpenAIRE

    Vilas Boas, Carlos Manuel Rodrigues

    2013-01-01

    A presente dissertação de Mestrado foca-se na análise da primeira Capital do Arquipélago de Cabo verde, a Ribeira Brava ou atualmente designada Cidade Velha, esta foi colónia Portuguesa até 1975. O objetivo da análise passa por apresentar formas adequadas de intervenção urbana tendo em conta o facto da Cidade Velha ter sido distinguida em Junho de 2009 Património Mundial da Humanidade, e estar ainda numa fase de consolidação e desenvolvimento do seu edificado e da sua economia. Com a disti...

  8. Produção e estado nutricional do milho em cultivo intercalar com adubos verdes

    Directory of Open Access Journals (Sweden)

    R. Heinrichs

    2002-03-01

    Full Text Available A utilização da adubação verde para estabelecer a diversidade e o equilíbrio do sistema de produção é um dos paradigmas da agricultura moderna. Com o objetivo de avaliar a produção e o estado nutricional da cultura de milho sob cultivo intercalar com adubos verdes, foi realizado, entre 1995 e 1997, um experimento em campo, em Piracicaba (SP, em um Litossolo Vermelho eutrófico. O milho foi semeado no espaçamento de 0,90m nas entrelinhas, perfazendo aproximadamente 50.000plantas por hectare. Os tratamentos constaram de uma testemunha, sem cultivo intercalar, e quatro espécies de adubos verdes: mucuna anã (Mucuna deeringiana (Bort. Merr, guandu anão (Cajanus cajan (L. Millsp, crotalária (Crotalaria spectabilis Roth e feijão-de-porco (Canavalia ensiformis (L. DC., semeados sem adubação, no meio da entrelinha, distante 45cm da linha do milho, em duas épocas: simultânea à semeadura do milho e 30dias após. O solo, no primeiro ano, foi preparado sob sistema convencional e, no segundo, cultivaram-se as culturas sob semeadura direta. O delineamento experimental foi de blocos ao acaso com parcelas subdivididas e quatro repetições. O estado nutricional e a produção de grãos do milho apresentaram melhores resultados no cultivo consorciado com feijão-de-porco. Os efeitos positivos desta espécie na produtividade de grãos de milho foram mais acentuados no segundo ano de adoção do cultivo consorciado, quando o sistema de manejo do solo foi semeadura direta. A semeadura dos adubos verdes simultânea ao milho foi o manejo mais recomendável, por não prejudicar o desenvolvimento do milho e reduzir a operação pós-plantio.

  9. O Desenvolvimento de Cabo Verde: abordagem ao mercado de tradução

    OpenAIRE

    De Oliveira, Bruno,

    2010-01-01

    Orientador: Mestre Alberto Couto O Presente Trabalho de Projecto contextualiza o arquipélago de Cabo Verde nos aspectos histórico, geográfico, político e económico e aborda as parcerias internacionais para o seu desenvolvimento ancoradas, nomeadamente, na União Europeia, CEDEAO, Millennium Challenge Corporation e a Organização Mundial do Comércio, etc. No capítulo do desenvolvimento e internacionalização analisa-se o mercado de tradução, e de como estas novas parcerias estão...

  10. Guiné-Bissau e Cabo Verde : da unidade à separação

    OpenAIRE

    Fernandes, Antero da Conceição Monteiro

    2007-01-01

    Depois da Segunda Guerra Mundial, a conjuntura política internacional tornou-se favorável para os países que se encontravam sob a dominação estrangeira no que concerne à descolonização. É neste contexto que nas colónias portuguesa surgiram movimentos independentistas, entre os quais o PAIGC, fundado por Amílcar Cabral a 19 de Setembro de 1956. Esse partido tinha dois objectivos: primeiro libertar a Guiné e Cabo Verde e depois fazer a união desses dois Estados. Depois da independência desses d...

  11. Implementação de corredores verdes aplicado ao turismo sustentável

    OpenAIRE

    Pinho, Juliana Sofia Silva

    2012-01-01

    Este trabalho surge no âmbito na necessidade de estudar e de aliar o desenvolvimento do turismo à conservação da natureza e ao desenvolvimento de mecanismos de prevenção e preservação da natureza e dos habitats. O objetivo principal deste trabalho foi o estudo da possibilidade de implementação de uma rede de corredores verdes que promovam o turismo sustentável na zona da Ria de Aveiro. A metodologia usada para este trabalho passou pela identificação dos principais pontos de interesse tu...

  12. Reducing volcanic risk on Fogo Volcano, Cape-Verde, through a participatory approach: which out coming?

    OpenAIRE

    P. Texier-Teixeira; Chouraqui, F.; A. Perrillat-Collomb; Lavigne, F.; J. R. Cadag; Grancher, D.

    2013-01-01

    This research paper presents the outcomes of the Work Package 5 (Socio-economical Vulnerability Assessment and Community-Based Disaster Risk Reduction) of the MIAVITA Research Program (MItigate and Assess risk from Volcanic Impact on Terrain and human Activities) conducted in Fogo Volcano, Cape-Verde. The study lasted for almost 3 yr (May 2010–January 2012) of which most of the time was spent in the village of Chã das Caldeiras, situated within the 9 km-wide caldera o...

  13. Composition and origin of PM10 in Cape Verde: Characterization of long-range transport episodes

    Science.gov (United States)

    Salvador, P.; Almeida, S. M.; Cardoso, J.; Almeida-Silva, M.; Nunes, T.; Cerqueira, M.; Alves, C.; Reis, M. A.; Chaves, P. C.; Artíñano, B.; Pio, C.

    2016-02-01

    A receptor modelling study was performed to identify source categories and their contributions to the PM10 total mass at the Cape Verde archipelago. Trajectory statistical methods were also used to characterize the main atmospheric circulation patterns causing the transport of air masses and to geographically identify the main potential source areas of each PM10 source category. Our findings point out that the variability of the PM10 levels at Cape Verde was prompted by the advections of African mineral dust. The mineral dust load was mainly composed by clay-silicates mineral derived elements (22% of the PM10 total mass on average) with lower amounts of carbonates (9%). A clear northward gradient was observed in carbonates concentration that illustrates the differences in the composition according to the source regions of mineral dust. Mineral dust was frequently linked to industrial emissions from crude oil refineries, fertilizer industries as well as oil and coal power plants, located in the northern and north-western coast of the African continent (29%). Sea salt was also registered in the PM10 mass during most part of the sampling period, with a lower impact in the PM10 levels than the mineral dust one (26%). Combustion aerosols (6%) reached the highest mean values in summer as a consequence of the emissions from local-regional sources. Biomass burning aerosols produced from October to November in sub-sahelian latitudes, had a clear influence in the content of elemental carbon (EC) recorded at Cape Verde but a small impact in the PM10 total mass levels. A minor contribution to the PM10 mass has been associated to secondary inorganic compounds-SIC. Namely, ammonium sulfate and nitrate (SIC 1-5%) and calcium sulfate and nitrate (SIC 2-3%). The main origin of SIC 1 was attributed to emissions of SO2 and NOx from industrial sources located in the northern and north-western African coast and from wildfires produced in the continent. SIC 2 had a clear regional origin

  14. Las minas de magnesita del Puerto de la Cruz Verde (Madrid)

    OpenAIRE

    Mazadiego Martínez, Luis Felipe; Puche Riart, Octavio; Jordá Bordehore, Luis

    2003-01-01

    Las ruinas de una mina de magnesita, localizada en el Puerto de la Cruz Verde, próxima a Zarzalejo y al Monasterio de El Escorial, es el objeto de este trabajo. Los edificios auxiliares, el transformador y las bocaminas se hallan en buen estado de conservación. Todo esto hace que sea necesario un proyecto de protección y restauración, dado el interés cultural y paisajístico que tiene este enclave

  15. Palo Verde Nuclear Generating Station: an example of the state role in regional nuclear projects

    International Nuclear Information System (INIS)

    A nuclear power plant siting policy which confines new construction to existing sites will lead to the formation of large regional power centers, each involving many utilities from several states. The Palo Verde Nuclear Project in Arizona has been examined in terms of the role state regulation plays in large regional nuclear projects. State regulatory processes do not reflect the regional nature of large power centers. Decisions and actions by individual state regulatory commissions create risk and uncertainty for all the utility participants in regional projects. A climate and mechanism to encourage and facilitate interstate cooperation are needed to enhance the viability of the confined siting policy and the regional power center concept

  16. Fukushima type severe accident analysis of Laguna Verde Nuclear Power Plant using RELAP5/SCDAPSIM

    Energy Technology Data Exchange (ETDEWEB)

    Trivedi, A.K. [Indian Inst. of Technology, Nuclear Engineering and Technology Programme, Kanpur (India); Khanna, A., E-mail: akhanna@iitk.ac.in [Indian Inst. of Technology, Dept. of Chemical Engineering, Kanpur (India); Munshi, P. [Indian Inst. of Technology, Nuclear Engineering and Technology Programme, Kanpur (India); Allison, C. [Innovative Systems Software, Idaho Falls, Idaho (United States)

    2012-07-01

    Station Black out (SBO) in Boiling Water Reactor of Laguna Verde Nuclear Power Plant (LVNPP) is analyzed. Each flow channel is modeled as a pipe divided into 14 nodes. Physical and thermodynamic properties of both recirculation loops are identical. There are four steam lines and they are considered separately in the model. SBO lead to loss of cooling in the core, severe damage of the fuel and hydrogen production. The maximum core surface temperature has gone up to 3000 K with total hydrogen accumulation about 430 kg. The maximum debris temperature in the lower plenum is 4233 K. (author)

  17. Online environments in the professionalization of secondary education teachers in Cape Verde: an action research project

    OpenAIRE

    Mendonça, Adriana

    2014-01-01

    Tese de doutoramento em Ciências da Educação (área de especialização em Tecnologia Educativa). A introdução de ambientes online nas práticas docentes no ensino superior, tem-se afigurado numa necessidade um pouco por todo o mundo. Nesta investigação apresenta-se uma dessas iniciativas desenvolvidas na universidade de Cabo Verde (Uni-CV), no Departamento de Ciências Sociais e Humanas (DCSH). A Uni-CV conta com oito anos de existência, encontrando-se ainda na caminhada para a inc...

  18. Consideraciones sobre la contratación pública sostenible ("verde")

    OpenAIRE

    Pierre Foy Valencia

    2011-01-01

    Sobre la base de un enfoque de desarrollo sostenible y sistema jurídico (derecho ambiental) se inserta el rol del Derecho Administrativo y cómo a modo de ejemplo se traduce en algunas instituciones legales, aterrizando en la moderna visón de la contratación y compras sostenible o verdes. Se abordan experiencias comparadas, así como la presencia de la ética y la política de tales contrataciones, los desafíos y beneficios tanto para el propio Estado en su rol de consumidor, como para la socieda...

  19. Decadal-Scale Tropical North Atlantic Climate Variability Recorded in Slow Growing Cape Verde Corals

    Science.gov (United States)

    Moses, C. S.; Swart, P. K.; Dodge, R. E.; Helmle, K. P.; Thorrold, S.

    2002-12-01

    The decadal to century scale climate variability of the tropical North Atlantic has major implications for both neighboring coastal and inland areas. Changes in patterns of sea surface temperature (SST) and SST anomalies (SSTA) in the tropical North Atlantic are known to affect rainfall in Florida, South America, and sub-Saharan Africa, as well as the number of major hurricanes formed in the Atlantic. Because of the significance of these connections, it is important to further increase our predictive capacity for the recognition of trends and cycles in tropical North Atlantic SST and SSTA. Located at 15° N latitude off the west coast of sub-Saharan Africa, the Cape Verde Islands are an ideal geographic location to search for records of the Tropical North Atlantic Index (TNA). Such patterns are present in proxy indicators of climate (O, C, Sr/Ca and Mg/Ca) recorded in the skeletons of slow growing corals, such as Siderastrea radians, found in Cape Verde (growth rate = 1-2 mm/yr). These corals represent an archive for SST and SSTA records that exceed the instrumental period of the eastern tropical North Atlantic. We cored corals from several different locations within the Cape Verde archipelago and analyzed them for stable isotopes (δ13C and δ18O) and minor elements (Sr, Mg, and Ba). The δ18O signal present in these corals shows a distinct relationship to the TNA over the better part of the last 100 years. In addition, the δ18O record in several of these corals also records the onset of the latest Sahel (11°-18° N in Africa) drought which began in 1970. The Sr/Ca and Mg/Ca records of these corals indicate a slight warming of the waters around Cape Verde during the last 100 years, as well as accurately recording the El Niño events of 1982-83 and 1997-98. The correlations present between the records in these corals and the known instrumental record for the eastern tropical North Atlantic suggests that the fluctuations recorded in the proxy indicators may be

  20. Contribución de los Espacios Verdes a la Salud y al Bienestar Humano

    OpenAIRE

    Pecurul, Mireia; Cristóbal, Roser; Moscoso, David J.; Fernández, Antoni; Pérez, Sofía; Domínguez, Glòria

    2006-01-01

    Este documento recoge y amplía los materiales del primer seminario del estado español sobre la contribución de los espacios verdes a la salud y al bienestar humano que se celebró en Lérida el noviembre de 2005. En este seminario se recopiló, por primera vez, un conjunto de proyectos, iniciativas y acciones relacionadas con la incorporación de aspectos de salud en el planeamiento territorial y en la gestión del medio natural. Estas prácticas han sido enmarcadas en el contexto de las políticas ...

  1. Evaluación de la recarga natural al acuífero de la cuenca superior del arroyo Napostá Grande, provincia de Buenos Aires Natural recharge evaluation of the aquifer in the upper Arroyo Napostá Grande basin, province of Buenos Aires

    Directory of Open Access Journals (Sweden)

    Jorge C. Carrica

    2004-06-01

    Full Text Available La cuenca superior del arroyo Napostá Grande constituye un área de interés para la explotación del recurso hídrico subterráneo como fuente alternativa de abastecimiento de agua a núcleos urbanos de la región entre los que se encuentra la ciudad de Bahía Blanca. El acuífero freático del sector recibe recarga directa de la lluvia a través de la zona no saturada, recarga localizada en el piedemonte serrano y, en mucha menor cuantía, la indirecta por almacenamiento de banco durante las crecidas del arroyo. El objetivo del estudio es determinar cuantitativamente el valor de la recarga y cuales de los mencionados mecanismos son los más importantes, mediante el empleo de distintos métodos: balances hidrológicos diarios a escala de cuenca (programa Visual Balan y de suelo (programa Balshort, balance de cloruros entre el agua de lluvia y el agua de la capa freática y análisis de la curva de recesión de hidrogramas fluviales. Se concluye que la recarga pluvial, localizada en el piedemonte serrano, es la principal fuente de alimentación del acuífero y que, según el método de estimación empleado, la recarga total al acuífero se cifra entre un 7 y un 9% de la precipitación anual media.The upper river basin of Napostá Grande creek constitutes an area of interest for ground water exploitation as an alternative source of water supply to Bahía Blanca city and other urban nuclei of the region. The phreatic aquifer in this area receives direct rain recharge through the unsaturated zone, recharge located in the piedmont area and indirect recharge from bank storage during the streamflow peak in smaller quantity. The objective of the study is to determine quantitatively the recharge and the ranking of the mentioned mechanisms through different methods: daily hydrologic balance both on basin scale (Visual Balan program and soil (Balshort program; chloride balance between rainwater and groundwater and analysis of the hydrograph recession

  2. A five million year record of compositional variations in mantle sources to magmatism on Santiago, southern Cape Verde archipelago

    DEFF Research Database (Denmark)

    Barker, Abigail K.; Holm, Paul Martin; Peate, David W.;

    2010-01-01

    High-precision Pb isotope data and Sr-Nd-Hf isotope data are presented together with major and trace element data for samples spanning the 4.6 Ma history of volcanism at Santiago, in the southern Cape Verde islands. Pb isotope data confirm the positive ¿8/4 signature of the southern islands...... indicating that the north-south compositional heterogeneity in the Cape Verde archipelago has persisted for at least 4.6 Ma. The Santiago volcanics show distinct compositional differences between the old, intermediate and young volcanics, and suggest greater involvement of an enriched mantle (EM1)-like...

  3. Estudio ambiental de las zonas verdes municipales de Arona, zona oeste del paseo marítimo, El Guincho

    OpenAIRE

    SERRA ROVIRA, JORDI

    2014-01-01

    El municipio de Arona, situado en el suroeste de Tenerife, posee algunos de los espacios verdes públicos mas transitados de la isla, especialmente los ubicados en los pueblos de costa baja, por la gran importancia que adquiere aquí la actividad turística. Estas áreas verdes se configuran de forma muy rápida y precipitada al son del boom urbanístico que sufrió esta región en los 80. Como resultados de este proceso, actualmente encontramos espacios insostenibles con una es...

  4. Modelo de formação a distância para a Universidade Pública de Cabo Verde

    OpenAIRE

    Santos, João Moreira Lopes dos

    2008-01-01

    O presente trabalho propõe apresentar o perfil de e-formadores que, no momento, são docentes de Instituições de Ensino Superior de Cabo Verde. Nele são apresentadas as características desses docentes a nível da literacia informática e de competências de e-formador. Com base nesse perfil e nas especificidades do ensino em Cabo Verde são apresentadas pistas para superação das dificuldades identificadas. ABSTRACT: This work aims to present an e-tutor profile for higher educat...

  5. Abordagem da compreensão na leitura no ensino básico em Cabo Verde

    OpenAIRE

    Cunha, João Bernardino Ramos

    2008-01-01

    O presente estudo procura analisar questões teórico-práticometodológicas suscitadas pelo desenvolvimento de competências em compreensão na leitura em alunos do 4º Ano do Ensino Básico, no âmbito do ensino do Português como Língua Segunda na República de Cabo Verde. Para tanto, procedeu-se à análise de planificações dos professores de Português de uma Escola do Ensino Básico em Cabo Verde. ABSTRACT: This study was aimed to discuss theoretical, practical and methodo...

  6. Título da página electrónica: CIDLOT/Universidade de Cabo Verde

    OpenAIRE

    Andréia Moassab; Patrícia Anahory

    2013-01-01

    O Centro de Investigação em Desenvolvimento Local e Ordenamento de Território (CIDLOT) da Universidade de Cabo Verde representa um laboratório de ponta da primeira universidade pública do país, fundada apenas há quatro anos, que tem o objectivo de fazer dialogar o mundo académico com as maiores dinâmicas de desenvolvimento do arquipélago. Desde a sua fundação em 2009, o CIDLOT tem trabalhado com vista a preencher uma série de lacunas de conhecimento existentes em Cabo Verde, por exemplo, real...

  7. La proteína verde fluorescente ilumina la biociencia The Green Fluorescent Protein that glows in Bioscience

    OpenAIRE

    María Inés Pérez Millán; Damasia Becú-Villalobos

    2009-01-01

    La proteína verde fluorescente (o GFP, por sus siglas en inglés, Green Fluorescent Protein) es una proteína producida por la medusa Aequorea victoria que emite bioluminiscencia en la zona verde del espectro visible. El gen que codifica esta proteína ha sido clonado y se utiliza habitualmente en biología molecular como marcador. Los descubrimientos relacionados a la GFP merecieron el Premio Nobel de Química 2008, en conjunto a los tres investigadores, Dres Shimomura, Chalfie y Tsien que partic...

  8. Petrología de la secuencia volcánica cenozoica en el área del arroyo Ranquil Huao: Meseta de Somún Curá. Patagonia Extraandina

    Directory of Open Access Journals (Sweden)

    M. B. Remesal

    2002-09-01

    Full Text Available En el norte de la Patagonia extraandina, involucrando parte de las provincias geográficas de Río Negro y Chubut se extiende un amplio derrame basáltico tipo plateau. El valle del arroyo Ranquil Huao, en el sector austral del plateau, en las proximidades de la localidad de Telsen, expone una secuencia interesante y bastante completa de esa asociación volcánica cenozoica. En este corte es posible estudiar no sólo los flujos basálticos correspondientes a la Formación Somún Curá, sino también los derrames denominados Basalto La Mesada, incluidos en la Superunidad Quiñelaf y los depósitos tobáceos del Grupo Sarmiento. Los basaltos de la Formación Somún Curá presentan rasgos petrográficos y geoquímicos similares a los del Basalto La Mesada (Superunidad Quiñelaf. El flujo piroclástico que se intercala en la parte más alta de la Formación Somún Curá complementa la estratigrafía conocida para esta unidad. Las características de las basanitas aflorantes en el tramo medio del valle del arroyo Ranquil Huao permiten diferenciarlas de las rocas que constituyen las otras unidades basálticas en la secuencia.

  9. The Palo Verde story: a foundation for future multi-station nuclear power plants

    International Nuclear Information System (INIS)

    In 1973, the design and planning for the Palo Verde Nuclear Generating Station Was started featuring three 3800 MWt Combustion Engineering Standard System 80 Nuclear Steam Supply Systems. Arizona Public Service Company (APS) was the Project Manager and Operating Agent and Bechtel Power Corporation the architect/engineer and constructor. The Palo Verde units are located in a desert environment some 50 miles west of Phoenix, Arizona. It is a 'dry site' in that there are no liquid discharges from the site. The cooling tower makeup water sewage is waste effluent from the City of Phoenix treated at an on site reclamation facility. The effluent has had primary and secondary treatment at the Phoenix plant prior to delivery to PVNGS. The units are physically separate from each other but are of identical design. There are no shared safety systems between the units. Unit 1 and Unit 2 are both in commercial operation (January, 1986 and September, 1986 respectively). Unit 3 is scheduled to load fuel late in the first quarter of 1987. This paper presents some of the engineering and management practices used during design, construction, and startup and operational experiences and other unique features of this multi-unit nuclear station. The site arrangement is shown in Figure 1

  10. Palo verde story: a foundation for future multi-station nuclear power plants

    International Nuclear Information System (INIS)

    In 1973, the design and planning for the Palo Verde Nuclear Generating Station was started featuring three 3800 MWt Combustion Engineering Standard System 80 Nuclear Steam Supply Systems. Arizona Public Service Company (APS) was the Project Manager and Operating Agent and Bechtel Power Corporation the architect/engineer and constructor. The Palo Verde units are located in a desert environment some 50 miles west of Phoenix, Arizona. It is a dry site in that there are no liquid discharges from the site. The cooling tower makeup water sewage is waste effluent from the City of Phoenix treated at an on site reclamation facility. The effluent has had primary and secondary treatment at the Phoenix plant prior to delivery to PVNGS. The units are physically separate from each other but are of identical design. There are no shared safety systems between the units. This paper presents some of the engineering and management practices used during design, construction, and startup and operational experiences and other unique features of this multi-unit nuclear station

  11. [Vector-borne parasites of dogs on the Islands of Cabo Verde].

    Science.gov (United States)

    Kirchner, Marlene; Brunner, Adrian; Edelhofer, Renate; Joachim, Anja

    2008-01-01

    During an animal welfare campaign on the Islands of Cape Verde (in the capital Praia on the island of Santiago) a total of 57 dogs were examined for ectoparasites and blood parasites. 84% of the animals were infested with arthropods, mostly ticks. Haemotropic parasites were examined via blood smear, polymerase chain reaction (PCR) and/or serology. 23 dogs had single infections, five multiple infections with haemoparasites. In eight dogs Ehrlichia canis and in one Amaplasma phagocytophilum were detected by PCR, while 43.1% and 36.2% respectively were serologically positive. In 23 blood smears Babesia gibsoni, but no Babesia canis could be detected. In four cases Hepatozoon canis was found in the smears. All animals were negative for Dirofilaria larvae or antibodies against Leishmania. Arthropod-infested animals more frequently harboured babesiae (44%), ehrlichiae (19%) or H. canis (8%) compared to non-infested animals (20%, 0%, 0%). In bitches and dogs aged one year or less babesiae were more frequently detected (48% of the bitches and 13% of the male dogs; 45% of animals less than one year and 26% of the older ones). Due to the high infection rates the import of animals from Cabo Verde to Central Europe must be seen as critical, since an endemisation of (sub-)tropical infectious agents cannot be excluded. PMID:19066773

  12. Oxygen, hydrogen, and helium isotopes for investigating groundwater systems of the Cape Verde Islands, West Africa

    Science.gov (United States)

    Heilweil, V.M.; Solomon, K.D.; Gingerich, S.B.; Verstraeten, Ingrid M.

    2009-01-01

    Stable isotopes (??18O, ??2H), tritium (3H), and helium isotopes (3He, 4He) were used for evaluating groundwater recharge sources, flow paths, and residence times of three watersheds in the Cape Verde Islands (West Africa). Stable isotopes indicate the predominance of high-elevation precipitation that undergoes little evaporation prior to groundwater recharge. In contrast to other active oceanic hotspots, environmental tracers show that deep geothermal circulation does not strongly affect groundwater. Low tritium concentrations at seven groundwater sites indicate groundwater residence times of more than 50 years. Higher tritium values at other sites suggest some recent recharge. High 4He and 3He/4He ratios precluded 3H/3He dating at six sites. These high 3He/4He ratios (R/Ra values of up to 8.3) are consistent with reported mantle derived helium of oceanic island basalts in Cape Verde and provided end-member constraints for improved dating at seven other locations. Tritium and 3H/3He dating shows that S??o Nicolau Island's Ribeira Faj?? Basin has groundwater residence times of more than 50 years, whereas Fogo Island's Mosteiros Basin and Santo Ant??o Island's Ribeira Paul Basin contain a mixture of young and old groundwater. Young ages at selected sites within these two basins indicate local recharge and potential groundwater susceptibility to surface contamination and/or salt-water intrusion. ?? Springer-Verlag 2009.

  13. Structural relations between Marfa, Marathon, Val Verde, and Delaware basins of west Texas

    Energy Technology Data Exchange (ETDEWEB)

    Keller, G.R.; Smith, K.J.

    1985-02-01

    The Marfa, Marathon, Val Verde, and Delaware basins and related uplifts formed the major structural elements of the southwestern continental margin of North America during the Paleozoic. In contrast with the relatively simple relationships where the southern Oklahoma aulacogen intersects the Ouachita orogenic belt, structural relationships in the area of these basins are very complex. Various geologic evidence points to an allochthonous Marathon basin. However, a prominent gravity anomaly is associated with the Ouachita system as it extends from western Arkansas through Oklahoma and Texas into northern Mexico. If this anomaly is the signature of the early Paleozoic continental margin, then the location of the Marathon basin with respect to this anomaly suggests lateral displacements have been only on the scale of tens of kilometers. The Delaware basin seems clearly analogous to the Anadarko basin in that it formed as a result of reactivation of a major crustal flaw (not necessarily a rift). This reactivation was a result of the Ouachita orogeny. The Marfa basin is also flanked by a linear gravity high and basement uplift. The relationship of this anomaly to the gravity high associated with the Ouachita system suggests that the Marfa basin may be more analogous to the Delaware basin that foreland basins such as the Ft. Worth and Arkoma. A prominent gravity high that extends into northern Mexico is associated with the Devil's River uplift, and the relationships between this feature, the Val Verde basin, and adjacent structures suggest major deformation on a crustal scale.

  14. The continuous improvement system of nuclear power plant of Laguna Verde

    International Nuclear Information System (INIS)

    This paper describes the continuous improvement system of nuclear power plant of Laguna Verde and the achievements in implementing the same and additionally two study cases are presents. In February 2009 is noteworthy because the World Association of Nuclear Operators we identified as a learning organization, qualification which shows that the continuous improvement system has matured, and this system will expose as I get to learn to capitalize on our own experiences and external experiences diffused by the nuclear industry. In 2007 the management of nuclear power plants integrates its improvement systems and calls it continuous improvement system and is presented in the same extensive report that won the National Quality Award. This system is made up of 5 subsystems operating individually and are also related 1) human performance; 2) referential comparison or benchmarking; 3) self-assessment; 4) corrective action and 5) external operating experience. Five subsystems that plan, generate, capture, manage, communicate and protect the knowledge generated during the processes execution of nuclear power plant of Laguna Verde, as well as from external sources. The target set in 2007 was to increase the intellectual capital to always give response to meeting the security requirements, but creating a higher value to quality, customer, environment protection and society. In brief each of them, highlighting the objective, expectations management, implementation and some benefits. At the end they will describe two study cases selected to illustrate these cases as the organization learns by their continuous improvement system. (Author)

  15. A radiation monitoring system model for the Laguna Verde nuclear power training simulator

    International Nuclear Information System (INIS)

    A model for the Radiation Monitoring System of the Laguna Verde Boiling Water Reactor training simulator is presented. This model comprises enough definitions to assure interactions with the processes related, directly or indirectly, with the transport of radioisotopes. It is capable of following a dynamic behavior of the plant so an operator could be trained to become aware of nuclear radiation hazards. The model is composed of three parts: the electronics for the Process and Area Radiation Monitoring System; a lumped parameter transport model for the most representative radioisotopes; and the interactions with the modeled processes as well as with process not being simulated. The first part represents the radiation monitor controls in the vertical board panels of the nuclear station. The second part allows the carrying of nuclear isotopes between processes. The third part defines the way that the process interacts with the electronics at the point of release to environment or the point of detection. Each part of the model has been tested individually, and the transport model has been incorporated as a part of each process required to simulate nuclear radiation. The model parameters has been calculated using typical BWR nuclear radiation data, and Laguna Verde heat balance data at 100% design power. However, tunning will be necessary once the Simulator is integrated and tested. The tunning allows each detecting channel to behave as expected

  16. DDE in sediments of the Palos Verdes shelf, California: In situ transformation rates and geochemical fate

    Science.gov (United States)

    Eganhouse, R.P.; Pontolillo, J.

    2008-01-01

    From 1947 to 1971 the world's largest manufacturer of DDT discharged process wastes into the sewers of Los Angeles County. Roughly 870-1450 t of DDT were released to the ocean off Palos Verdes, CA, a portion of which (???100 t) resides in sediments on the continental shelf and slope. The most abundant DDT compound in the sediments, p,p???-DDE, is degrading by reductive dechlorination, butthe rate of transformation and factors controlling it are not well understood. In order to estimate in situ transformation rates and predict the long-term fate of p,p???-DDE, box cores were collected in 1992 and 2003 from a single location on the Palos Verdes Shelf and analyzed for 8 DDT compounds and 84 polychlorinated biphenyl (PCB) congeners. The PCBs show no evidence of dechlorination, and inventories did not change between 1992 and 2003. By contrast, the inventory of p,p???-DDE decreased by 43%, whereas that of p,p???-DDMU, the putative reductive dechlorination product increased by 34%. The first-order transformation rate for p,p???-DDE at the study site is 0.051 ?? 0.006 yr-1. A multistep reaction model suggests that inventories of p,p???-DDE and p,p???-DDMU will continue to decline, whereas that of p,p???-DDNU will reach a maximum around 2014.

  17. Parque Verde do Mondego: gestão e uso público

    Directory of Open Access Journals (Sweden)

    Yuli Della Volpi

    2016-05-01

    Full Text Available O presente artigo se refere a um estudo de caso que teve como recorte espacial o Parque Verde do Mondego, localizado às margens do Rio Mondego, na cidade de Coimbra, em Portugal. A pesquisa teve como objetivo compreender a gestão da área e o uso público do espaço. Para tanto, realizou-se, inicialmente, uma pesquisa bibliográfica e documental; em seguida, foram feitas diversas visitas ao parque e, por fim, uma entrevista com o responsável pela administração do local. Pôde-se, por meio do estudo, compreender o processo de criação do Parque Verde do Mondego, sua concessão para as empresas privadas, realizada por meio de concursos públicos, e seu uso pela população da cidade de Coimbra. Foram verificados ainda a carência de atividades de animação sociocultural na área – embora exista na cidade de Coimbra um curso de graduação em Animação Socioeducativa –, os conflitos existentes entre setor público e privado, além de determinados problemas que atingem atualmente o parque, como as inundações causadas pelas cheias do Rio Mondego.

  18. Áreas verdes públicas urbanas: conceitos, usos e funções

    Directory of Open Access Journals (Sweden)

    Carlos Roberto Loboda

    2005-06-01

    Full Text Available O presente trabalho consiste em uma reflexão sobre os espaços públicos vegetados na organização dos aglomerados urbanos. Serão abordados aspectos históricos dos espaços livres de construção já nas primeiras cidades, como conseqüência das necessidades experimentadas a cada momento na relação cidade e natureza. Utiliza-se como fundamentação teórica os aspectos conceituais que definem e caracterizam as principais funções das áreas verdes urbanas. As diferentes concepções construídas ao longo dos períodos históricos remontam um perfil desses espaços, representados hoje pelos parques, praças, jardins públicos e arborização de acompanhamento viário. Torna-se necessário fazer um resgate das áreas verdes públicas e suas funções indispensáveis na estruturação da cidade moderna.

  19. Dynamic analysis of the condensate and of the feed water in the Laguna Verde nuclear power station; Analisis dinamico del sistema de condensado y agua de alimentacion de la nucleoelectrica de Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Macedo Muth, Javier; Sandoval Pena, Ramon [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1988-12-31

    This article shows a non-lineal mathematical model for the condensate, and feed water systems and for feed water heater drains at the Laguna Verde Nuclear Power Station for its simulation in real time. The model allows the calculation of flows and pressures in all the piping system and equipment that integrate the systems. It was obtained by using the force unbalance in the fluid concept and is capable of reproducing its dynamic behavior through variations induced by the different operation modes and more common failures. The final model objective is to form part of the Laguna Verde simulator that will be used for operator training of this Nuclear Power Plant. [Espanol] En este articulo se muestra un modelo matematico no lineal de los sistemas de condensado, agua de alimentacion y drenes de calentadores de la central nuclear de Laguna Verde para su simulacion en tiempo real. El modelo permite calcular los flujos y las presiones en toda la red de tuberias y equipos que integran los sistemas. Se obtuvo utilizando el concepto de desbalance de fuerzas en el fluido, y es capaz de reproducir su comportamiento dinamico ante variaciones inducidas por los diversos modos de operacion y fallas mas comunes. El objetivo final del modelo es formar parte del simulador de Laguna Verde que se empleara para el adiestramiento de los operadores de dicha central nuclear.

  20. The National Institute of Nuclear Research (ININ) and its participation in the External Radiological Emergency Plans at Laguna Verde Power plant; El ININ y su participacion en el Plan de Emergencia Radiologica Externo de la Central Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Suarez, G. [Instituto Nacional de Investigaciones Nucleares, Departamento de Proteccion Radiologica, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

    1998-07-01

    In this article it is described the form in which the ININ participates in the External Radiological Emergency Plan at Laguna Verde Power plant. It is set the objective, mission and organization of this plan. The responsibilities and activities that plan has assigned are mentioned also the organization to fulfil them and the obtained results during 9 years of participation. (Author)

  1. Cape Verde and Its People: A Short History, Part I [And] Folk Tales of the Cape Verdean People.

    Science.gov (United States)

    Almeida, Raymond A.; Nyhan, Patricia

    Two booklets provide an overview of the history and folklore of Cape Verde, a group of islands lying 370 miles off the west coast of Africa. One booklet describes the history of the islands which were probably settled initially by Africans from the west coast of Africa. By the 15th century the islands were colonized by Portuguese and other…

  2. On the history and type specimens of the Cape Verde Cane Warbler Acrocephalus brevipennis (Keulemans, 1866) (Aves, Sylviidae)

    NARCIS (Netherlands)

    Hazevoet, C.J.

    1993-01-01

    The Cape Verde Cane Warbler Acrocephalus brevipennis was first described in 1866, and again in 1871 and 1883. These descriptions were all made after specimens from the same series. A type specimen was never designated and only one syntype from the original series can be traced today. The taxonomic h

  3. Migração na África Ocidental e Cabo Verde: uma relação recente?

    Directory of Open Access Journals (Sweden)

    Eufémia Vicente Rocha

    2013-01-01

    Full Text Available The aim of this paper is to reconstruct, from a eurocentric perspective, how migration is objectivated, today, in Cape Verde, the circumstances in which immigration is thought and the conditions to understand it out of the patterns that shape it into a Western form, static. Here, witchcraft appears as an obstacle to this relation of domination.

  4. [Clinical and immunological assessment of Polyoxidonium and Tantum Verde efficiency by catarrhal gingivitis treatment in children with chronic gastroduodenitis].

    Science.gov (United States)

    Kazarina, L N; Pursanova, A E

    2014-01-01

    The article presents findings allowing estimating effect of local application of polioxidonium and yantum verde in 101 children aged 12-17 with chronic catarrhal gingivitis and chronic gastroduodenitis. Statistically significant PMA indeх decrease (40.1±2.3% till 1.4±0.6% (рgingivitis in children with chronic gastroduodenitis.

  5. Factors controlling the rate of DDE dechlorination to DDMU in Palos Verdes margin sediments under anaerobic conditions.

    Science.gov (United States)

    Quensen, J F; Tiedje, J M; Jain, M K; Mueller, S A

    2001-01-15

    Marine sediments off the coast of the Palos Verdes Peninsula in California have been designated a Superfund site primarily because of the presence of DDE [1,1-dichloro-2,2-bis(p-chlorophenyl)ethene]. For decades, it was believed that DDE was not microbially transformed, but anaerobic bacteria in the Palos Verdes sediments reductively dechlorinate DDEto DDMU [1-chloro-2,2-bis(p-chlorophenyl)ethene], which is also found in the sediments. The effects of electron donor to sulfate ratio, available carbon, sampling sites, sediment depth, and temperature on the rate and extent of DDE dechlorination in anaerobic Palos Verdes sediment microcosms were investigated. Dechlorination rates varied, depending on the site and depth from which the sediments were collected, but DDE dechlorination occurred with sediments from all locations studied. Sulfate and low temperatures slowed dechlorination, but in the presence of sulfate and at in situ temperature, the dechlorination rates observed in the microcosms agree well with the observed rate of DDE disappearance from the Palos Verdes margin sediments. PMID:11347599

  6. U-Pb zircon constraints on the age and provenance of the Rocas Verdes basin fill, Tierra del Fuego, Argentina

    Science.gov (United States)

    Barbeau, David L.; Gombosi, David J.; Zahid, Khandaker M.; Bizimis, Michael; Swanson-Hysell, Nicholas; Valencia, Victor; Gehrels, George E.

    2009-12-01

    The Late Jurassic to Early Cretaceous Rocas Verdes basin constitutes one of the most poorly understood components of the southernmost Andes. As a result, accurate reconstructions and interpretations of deformation associated with the Andean orogeny and the kinematics of Scotia arc development also remain poorly constrained. In this data brief, we report U-Pb zircon ages from sandstones of the Rocas Verdes basin fill and from a crosscutting pluton in the southernmost Andes of Argentine Tierra del Fuego. Detrital samples contain predominant Early to early Middle Cretaceous (circa 130-105 Ma) U-Pb zircon age populations, with very small or single-grain middle Mesozoic and Proterozoic subpopulations. A very small subpopulation of Late Cretaceous ages in one sample raises the unlikely possibility that parts of the Rocas Verdes basin are younger than perceived. A sample from a crosscutting syenitic pegmatite yields a crystallization age of 74.7 +2.2/-2.0 Ma. The data presented herein encourage further geochronologic evaluation of the Rocas Verdes basin in order to better constrain the depositional ages and provenance of its contents.

  7. Environmental and climatic controls since the early XVth century in the palaeoflood records of a Mediterranean arroyo (Rambla de la Viuda, Spain)

    Science.gov (United States)

    Machado, M.; Benito, G.; Rico, M.; Sánchez-Moya, Y.; Sopeña, A.

    2011-12-01

    The Rambla de la Viuda arroyo is a representative ephemeral stream of the western Mediterranean area (NE Spain), both in terms of its torrential regime and land use history. A total of 10 stratigraphic profiles were described, located in areas of prevailing deposition of suspended clay, silts and fine sands, during flood events, along the canyon margins. The sedimentary comprises continuous sequences of slackwater flood deposits interbeded with episodic coluvial and edaphic horizons. The radiocarbon dating indicates that most of these deposits accumulated over the last 500 years. The stratigraphic and edaphological characterisation of the slack-water flood deposits, coluvial units and palaeosols, was supported biominerals content analysis (phytoliths), geochemical and documentary data (written historical documents). A high frequency and high magnitude palaeoflood period took place during the XV-XVII centuries (Phase I), which seem to correlate in time with general wetter conditions (higher presence of C3 photosynthetic pathway Poaceae and ligneous plants). During Phase I two well-developed palaeosols can be identified, which could correspond in time with two wetter than normal periods during ca.1550-1620 AD and 1670-1700 AD. Minimum flood discharges between 2000 m3s-1 and 1400 m3s-1 were estimated for this Phase. Phase II was characterised by episodic high magnitude floods (estimated minimum discharges between 1000-350 m3s-1), interrupted by coluvial deposits. This phase seems to be correlated in time with a period of higher climatic variability and general dry conditions as it can be inferred from the analysis of the phytoliths content on fluvial and coluvial sediments. Major drier conditions have occurred during middle XVIII century, where phytoliths indicate the presence of a C4 grassland, with less than 5% of riparian and dycots plants. Phytoliths content in this maximum driest period were of 5x103 phytoliths per gram of sediment (Acid-insoluble Fraction

  8. Oncoides tipo Osagia en la Formación La Manga (Oxfordiano y su significado paleoecológico, arroyo La Vaina, Mendoza

    Directory of Open Access Journals (Sweden)

    R.M. Palma

    2007-03-01

    Full Text Available Oncoides microbianos fueron encontrados en calizas del Oxfordiano de la Formación La Manga en la sección del Arroyo La Vaina, provincia de Mendoza. Los oncoides se presentan en packstones, floatstones-rudstones o dispersos en wackestones. Presentan formas elípticas, ameboidales y esféricas. Se reconocieron diferentes tipos de oncoides de acuerdo a las características de sus envolturas: (1 laminaciones micríticas, (2 laminaciones grumosas, y (3 laminaciones con organismos incrustantes. Sus núcleos están representados por fragmentos de moluscos, equinoideos, peloides e intraclastos. La envoltura sigue la forma del núcleo en la zona interna de la corteza. Sin embargo, en las zonas externas, la laminación contiene organismos incrustantes dominados por nubeculáridos y serpúlidos. Algunos oncoides, especialmente las formas ameboidales y elípticas, están caracterizados por múltiples núcleos, representados por oncoides pequeños. Los oncoides aparecen conjuntamente con bivalvos, equinodermos, foraminíferos y serpúlidos. La fauna indica condiciones someras, tranquilas, y la excelente preservación de los equinodermos sugiere mínimo transporte antes del enterramiento. Los oncoides crecieron en un ambiente marino normal, en el sector submareal, de aguas someras, con agitación leve a moderada. El limitado rolido en el crecimiento de los oncoides probablemente fue acompañado por corrientes intermitentes que reorientaron los oncoides paralelos a la estratificación. La laminación discontinua con organismos incrustantes refleja períodos de no agitación y litificación que facilitaron el crecimiento de organismos incrustantes sobre oncoides estáticos durante un período de baja tasa de sedimentación. La depositación de calizas con oncoides ocurrió durante la somerización del intervalo carbonático, asociada con la emersión, exposición subaérea y desarrollo de un paleokarst, como consecuencia de fluctuaciones relativas del nivel

  9. Dragonflies (Insecta, Odonata) collected in the Cape Verde Islands, 1960-1989 : including records of two taxa new to the archipelago

    OpenAIRE

    Martens, Andreas; Loureiro, Nuno de Santos; Hazevoet, Cornelis J.

    2015-01-01

    Dragonflies from the Cape Verde Islands, collected between 1960 and 1989 and kept in institutes in Portugal and Cape Verde, were studied. The Cape Verde collection at the Centro de Zoologia, Instituto de Investigação Científica Tropical, Lisbon, Portugal, includes eight species of dragonflies represented by 279 specimens collected in 1960-61 and 1969-72. The entomological collection at the Instituto Nacional de Investigação e Desenvolvimento Agrário (INIDA), São Jorge dos Orgãos, Republic of ...

  10. O perfil do consumidor verde e a sua intenção de uso de energias renováveis

    OpenAIRE

    Encarnação, Adriana Filipa Viegas da

    2011-01-01

    Mestrado em Marketing Actualmente temas como o Ambientalismo têm vindo a assumir uma importância crescente, verificando-se também uma grande aposta na produção e consumo de Energias Renováveis em detrimento dos combustíveis fósseis. Esta investigação incide sobre o Marketing Verde, que pretende descrever as estratégias desenvolvidas pelos marketers para atingir o consumidor verde.O objectivo desta dissertação é identificar o perfil do consumidor verde e determinar o seu comportamento ecolo...

  11. Dust mobilization and aerosol transport from West Africa to Cape Verde - a meteorological overview of SAMUM-2

    Energy Technology Data Exchange (ETDEWEB)

    Knippertz, Peter; Heinold, Bernd (School of Earth and Environment, Univ. of Leeds, Leeds (United Kingdom)), e-mail: p.knippertz@leeds.ac.uk; Tesche, Matthias (Leibniz Institute for Tropospheric Research, Leipzig (Germany)); Kandler, Konrad (Institute for Applied Geosciences, Technical Univ. Darmstadt, Darmstadt (Germany)); Toledano, Carlos (Group of Atmospheric Optics, Valladolid Univ., Valladolid (Spain)); Esselborn, Michael (European Southern Observatory, Garching (Germany))

    2011-09-15

    The second field campaign of the SAharan Mineral dUst experiMent (SAMUM-2) was performed between 15 January and 14 February 2008 at the airport of Praia, Cape Verde, and provided valuable information to study the westward transport of Saharan dust and the mixing with biomass-burning smoke and sea-salt aerosol. Here lidar, meteorological, and particle measurements at Praia, together with operational analyses, trajectories, and satellite and synoptic station data are used to give an overview of the meteorological conditions and to place other SAMUM-2 measurements into a large-scale context. It is demonstrated that wintertime dust conditions at Cape Verde are closely related to the movement and intensification of mid-latitude high-pressure systems and the associated pressure gradients at their southern flanks. These cause dust emission over Mauritania, Mali, and Niger, and subsequent westward transport to Cape Verde within about 1-5 d. Dust emissions often peak around midday, suggesting a relation to daytime mixing of momentum from nocturnal low-level jets to the surface. The dust layer over Cape Verde is usually restricted to the lowest 1.5 km of the atmosphere. During periods with near-surface wind speeds about 5.5 ms-1, a maritime aerosol layer develops which often mixes with dust from above. On most days, the middle levels up to about 5 km additionally contain smoke that can be traced back to sources in southern West Africa. Above this layer, clean air masses are transported to Cape Verde with the westerly flow at the southern side of the subtropical jet. The penetration of extra-tropical disturbances to low latitudes can bring troposphere-deep westerly flow and unusually clean conditions to the region

  12. Implementation of the project of equipment reliability in the nuclear power plant of Laguna Verde; Implementacion del proyecto de confiabilidad de equipo en la Central Nucleoelectrica Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Rios O, J. E.; Martinez L, A. G. [CFE, Central Laguna Verde, Subgerencia General de Operacion, Veracruz (Mexico)]. e-mail: jrios@cfe.gob.mx

    2008-07-01

    A equipment is reliable if it fulfills the function for which was designed and when it is required. To implement a project of reliability in a nuclear power plant this associate to a process of continuous analysis of the operation, of the conditions and faults of the equipment. The analysis of the operation of a system, of the equipment of the same faults and the parts that integrate to equipment take to identify the potential causes of faults. The predictive analysis on components and equipment allow to rectify and to establish guides to optimize the maintenance and to guarantee the reliability and function of the same ones. The reliability in the equipment is without place to doubts a wide project that embraces from the more small component of the equipment going by the proof of the parts of reserve, the operation conditions until the operative techniques of analysis. Without place of doubt for a nuclear power plant the taking of decisions based on the reliability of their systems and equipment will be the appropriate for to assure the operation and reliability of the same one. In this work would appear the project of reliability its processes, criteria, indicators action of improvement and the interaction of the different disciplines from the Nuclear Power Plant of Laguna Verde like a fundamental point for it put in operation. (Author)

  13. Reproduction of the flow-power map of the Laguna Verde power plant; Reproduccion del mapa flujo-potencia de la Central Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Amador G, R.; Gonzalez M, V.M. [Comision Nacional de Seguridad Nuclear y Salvaguardias, 03000 Mexico D.F. (Mexico)

    1993-07-01

    The National Commission of Nuclear Safety and Safeguards (CNSNS) requires to have calculation tools which allows it to make analysis independent of the behavior of the reactor core of Laguna Verde nuclear power plant (CNLV) with the purpose to support the evaluation and discharge activities of the fuel recharges licensing. The software package Fms (Fuel Management System) allows to carry out an analysis of the core of the BWR type reactors along the operation cycle to detect possible anomalies and/or helping in the fuel management. In this work it is reproduced the flow-power for the CNLV using the Presto code of the Fms software package. The comparison of results with the map used by the operators of CNLV shows good agreement between them. Another exercise carried out was the changes study that the axial and radial power outlines undergo as well as the thermohydraulic parameters (LHGR, APLHGR, CPR) when moving a control rod. The obtained results show that is had the experience to effect analysis of the reactor behavior using the Presto-Fms code therefore the study of the rest of the software package for the obtention of nuclear parameters used in this code is recommended. (Author)

  14. Economic analysis of extended cycles in the Laguna Verde nuclear power plant; Analisis economico de ciclos de extendidos en la Central Nucleoelectrica Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez N, H.; Hernandez M, J.L.; Francois L, J.L. [Facultad de Ingenieria, UNAM, 04510 Mexico D.F. (Mexico)]. E-mail: hermilo@correo.unam.mx

    2004-07-01

    The present work presents a preliminary analysis of economic type of extended cycles of operation of the Unit One in the Laguna Verde nuclear power plant. It is analysed an equilibrium cycle of 18 months firstly, with base to the Plan of Use of Energy of the Federal Commission of Electricity, being evaluated the cost of the energy until the end of the useful life of the plant. Later on an alternative recharge scenario is presented with base to an equilibrium cycle of 24 months, implemented to the beginning of the cycle 11, without considering transition cycles. It is added in both cycles the cost of the substitution energy, considering the unitary cost of the fuel of a dual thermoelectric power station of 350 M We and evaluating in each operation cycle, in both scenarios, the value of the substitution energy. The results show that a reduction of the days of recharge in the cycle of 24 months could make this option but favorable economically. The duration of the period of recharge rebounds in considerable grade in the cost of energy generation for concept of fuel. (Author)

  15. COMPARTIMENTAÇÃO MORFOESTRUTURAL DA BACIA DO RIO VERDE, SUL DE MINAS GERAIS / Morphostructural compartimentalization of the Rio Verde basin, South of Minas Gerais

    Directory of Open Access Journals (Sweden)

    Roberto Marques Neto

    2014-04-01

    Full Text Available O presente artigo divulga proposta de compartimentação morfoestrutural para a bacia do Rio Verde, localizada na parte meridional do Estado de Minas Gerais em terrenos da Serra da Mantiqueira, Planalto do Alto Rio Grande e Planalto de Varginha, apresentando litologias diversas (metagranitoides arqueanos, metassedimentos supracrustais proterozoicos e intrusões alcalinas cretáceo-paleocenas distribuídas em considerável diversidade de formas de relevo. A análise integrada entre a litologia, os lineamentos estruturais, a rede de drenagem e os padrões de formas de relevo discerniu os seguintes compartimentos morfoestruturais: Patamares de cimeira da Mantiqueira (desmembrados em cinco subcompartimentos, Patamares escalonados da Mantiqueira, Planalto de Cruzília-Minduri, Planalto alongado de Lambari, Planalto de São Lourenço-Caxambu, Planalto de Três Corações, Planalto rebaixado de Varginha e Cristas monoclinais. A compartimentação revelou forte controle morfoestrutural vinculado ao rifte continental do sudeste do Brasil associado a uma acentuada dinâmica morfotectônica sobreposta em função da interferência de efeitos diastróficos neotectônicos. Normal 0 21 false false false PT-BR X-NONE X-NONE

  16. Sulphur dioxide (SO2) emissions during the 2014-15 Fogo eruption, Cape Verde

    Science.gov (United States)

    Barrancos, José; Dionis, Samara; Quevedo, Roberto; Fernandes, Paulo; Rodríguez, Fátima; Pérez, Nemesio M.; Silva, Sónia; Cardoso, Nadir; Hernández, Pedro A.; Melián, Gladys V.; Padrón, Eleazar; Padilla, Germán; Asensio-Ramos, María; Calvo, David; Semedo, Helio; Alfama, Vera

    2015-04-01

    A new eruption started at Fogo volcanic island on November 23, 2014, an active stratovolcano, located in the SW of the Cape Verde Archipelago; rising over 6 km from the 4000m deep seafloor to the Pico do Fogo summit at 2829m above sea level (m.a.s.l.). Since settlement in the 15th century, 27 eruptions have been identified through analysis of incomplete written records (Ribeiro, 1960), with average time intervals of 20 yr and average duration of two months. The eruptions were mostly effusive (Hawaiian to Strombolian), with rare occurrences of highly explosive episodes including phreatomagmatic events (Day et al., 1999). This study reports sulphur dioxide (SO2) emission rate variations observed throughout the 2014-15 Fogo eruption, Cape Verde. More than 100 measurements of SO2 emission rate have been carried out in a daily basis by ITER/INVOLCAN/UNICV/OVCV/SNPC research team since November 28, 2014, five days after the eruption onset, by means of a miniDOAS using the traverse method with a car. The daily deviation obtained of the data is around 15%. Estimated SO2 emission rates ranged from 12,476 ± 981 to 492 ± 27 tons/day during the 2014-15 Fogo eruption until January 1, 2015. During this first five days of measurements, the observed SO2 emission rates were high with an average rate of 11,100 tons/day. On December 3, 2014 the SO2 emission rate dropped to values close to 4,000 tons/day, whereas few days later, on December 10, 2014, an increase to values close to 11,000 tons/day was recorded. Since then, SO2 emission rate has shown decrease trend to values close to 1,300 tons/day until December 21, 2014. The average of the observed SO2 emission rate was about 2,000 tons/day from December 21, 2014 to January 1, 2015, without detecting a specific either increasing or decreasing trend of the SO2 emission rate. The objective of this report is to clarify relations between the SO2 emission rate and surface eruptive activity during the 2014-15 Fogo eruption. Day, S. J

  17. Análisis de los cambios morfológicos y morfodinámicos del arroyo El cano (Córdoba en la última centuria: factores de control, causas e implicancias ambientales

    Directory of Open Access Journals (Sweden)

    Leandro Magnante

    2014-03-01

    Full Text Available El arroyo El Cano, afluente del Tegua, drena la vertiente oriental de la Sierra de Comechingones y planicie pampeana adyacente (Córdoba, donde la presión antrópica es creciente. En este trabajo se analizan sus variaciones morfológicas-morfodinámicas en la última centuria, los factores de control, las causas e implicancias ambientales. La metodología incluyó: mapeo geológico-geomorfológico e hidrográfico; análisis histórico evolutivo del canal; monitoreo de geoindicadores morfológicos y sedimentológicos y zonificación del canal según su comportamiento. El clima regional es templado-subhúmedo, la precipitación media anual varía entre 830-950 mm, y exhibe una tendencia ascendente en las últimas décadas. Geológicamente el área está conformada por megabloques de basamento, cubiertos en la zona extraserrana por secuencias cuaternarias, eólicas y fluviales (paleored de drenaje de edad pleistocena, diferencialmente diagenizadas. El arroyo es permanente en la sierra y efímero en la llanura (caudal= 0,08 a 200 m3/s, estiaje y crecidas, respectivamente. El canal es rectilíneo (sinuosidad=1,02-1,22, el gradiente varía entre 0,4 - 0,72% y la relación ancho-profundidad entre 1 y 30. En el lecho dominan materiales areno-gravosos mal seleccionados y, en tramos, secuencias cementadas. Integrando esta información surge que: 1 el arroyo El Cano se integró a la cuenca del Tegua a fines de la década del '50-inicio del '60, por erosión retrocedente, desbordes y extensión del canal; 2 la distribución espacial de estos procesos estuvo controlada por la estructura y la paleored pleistocena, mientras que su ritmo y morfologías resultantes, por la litología; 3 el clima es la principal causa de integración (crecidas extraordinarias/años más húmedos, potenciado por actividades humanas; 4 la red aún está desajustada, reconociéndose cinco segmentos de diferente comportamiento morfodinámico.

  18. A MULHER E A EXTRAÇÃO CLANDESTINA DE INERTES EM CABO VERDE

    Directory of Open Access Journals (Sweden)

    Ermelinda Lopes

    2012-01-01

    Full Text Available This study aims to assess the social importance of women in the illegal extraction of sand and gravel in Cape Verde and explain how women can participate and contribute to a sustainable extraction and the consequent reduction in illegal extraction process. Based on direct observation on the field, there were realized surveys and informal conversations with the workers who extract the inert material, it was held the record of environmental impacts in photography and the environmental impacts assessment through the interaction matrices of Leopold, depending on the site of operation in the case, in the rivers of Flanders and Principal, in the municipality of S. Miguel, and Cuba, in the municipality of Tarrafal.

  19. Condom use at last sexual relationship among adolescents of Santiago Island, Cape Verde, - West Africa

    Directory of Open Access Journals (Sweden)

    Tavares Carlos

    2012-11-01

    Full Text Available Abstract Objective To estimate factors associated with condom use at last sexual intercourse among adolescents. Methods Cross-sectional study of a representative sample of 368 sexually active adolescents aged 13–17 years from eight public high schools on Santiago Island, Cape Verde, 2007. The level of significance was 5.0% obtained from logistic regression, considering the association between condom use and socio-demographic, sexual and reproductive variables. Results The prevalence of condom use at last sexual intercourse was 94.9%. Factors associated with condom use at last sexual relationship were: non-Catholic religion (OR=0.68, 95%CI: 0.52; 0.88 and affective-sexual partnership before the interview (OR=5.15, 95%CI: 1.79; 14.80. Conclusions There was a high prevalence of condom use at last sexual intercourse of adolescents.

  20. Genome-wide analyses of HTLV-1aD strains from Cape Verde, Africa.

    Science.gov (United States)

    Zanella, Louise; Pina-Araujo I, Isabel de; Morgado, Mariza G; Vicente, Ana Carolina

    2016-09-01

    We characterised and reported the first full-length genomes of Human T-cell Lymphotropic Virus Type 1 subgroup HTLV-1aD (CV21 and CV79). This subgroup is one of the major determinants of HTLV-1 infections in North and West Africa, and recombinant strains involving this subgroup have been recently demonstrated. The CV21 and CV79 strains from Cape Verde/Africa were characterised as pure HTLV-1aD genomes, comparative analyses including HTLV-1 subtypes and subgroups revealed HTLV-1aD signatures in the envelope, pol, and pX regions. These genomes provide original information that will contribute to further studies on HTLV-1a epidemiology and evolution. PMID:27653363

  1. Genome-wide analyses of HTLV-1aD strains from Cape Verde, Africa

    Science.gov (United States)

    Zanella, Louise; de Pina-Araujo I, Isabel; Morgado, Mariza G; Vicente, Ana Carolina

    2016-01-01

    We characterised and reported the first full-length genomes of Human T-cell Lymphotropic Virus Type 1 subgroup HTLV-1aD (CV21 and CV79). This subgroup is one of the major determinants of HTLV-1 infections in North and West Africa, and recombinant strains involving this subgroup have been recently demonstrated. The CV21 and CV79 strains from Cape Verde/Africa were characterised as pure HTLV-1aD genomes, comparative analyses including HTLV-1 subtypes and subgroups revealed HTLV-1aD signatures in the envelope, pol, and pX regions. These genomes provide original information that will contribute to further studies on HTLV-1a epidemiology and evolution.

  2. Astronomical Alignments of the Sun Temple site in Mesa Verde National Park

    CERN Document Server

    Towers, Sherry

    2016-01-01

    Summer 2015 marked the 100th anniversary of the excavation by J.W. Fewkes of the Sun Temple in Mesa Verde National Park, Colorado; an ancient ceremonial complex of unknown purpose, prominently located atop a mesa, constructed by the Pueblo Indians approximately 1000 years ago. In this analysis we perform a digital survey of the site, and examine the possibility that four key tower-like elements of the complex were used for observation of the rise or set of celestial bodies known to be sacred to the Pueblo Indians. We find statistically significant evidence that the site was used for astronomical observation of the rise and/or set of nearly all such bodies. The Sun Temple appears to represent the most comprehensive prehistoric astronomical observatory yet uncovered.

  3. Experience with reactor power cutback system at Palo Verde nuclear generating station

    International Nuclear Information System (INIS)

    Palo Verde Nuclear Generating Station (PVNGS) is a three unit site which illustrates System 80 nuclear steam supply system (NSSS) design. The System 80 NSSS is the Combustion Engineering (C-E) standard design rated at 3817 Mwth. PVNGS Units 1 and 2 achieved commercial operation on February 13, 1986 and September 22, 1986, respectively, while Unit 3 has a forecast date for commercial operation in the third quarter of 1987. The System 80 design incorporates a reactor power cutback system (RPCS) feature which reduces plant trips caused by two common initiating events: loss of load/turbine trip (LOL) and loss of one main feedwater pump (LOMFWP). The key design objective of the RPCS is to improve overall plant availability and performance, while minimizing challenges to the plant safety system

  4. Consideraciones sobre la contratación pública sostenible ("verde"

    Directory of Open Access Journals (Sweden)

    Pierre Foy Valencia

    2011-12-01

    Full Text Available Sobre la base de un enfoque de desarrollo sostenible y sistema jurídico (derecho ambiental se inserta el rol del Derecho Administrativo y cómo a modo de ejemplo se traduce en algunas instituciones legales, aterrizando en la moderna visón de la contratación y compras sostenible o verdes. Se abordan experiencias comparadas, así como la presencia de la ética y la política de tales contrataciones, los desafíos y beneficios tanto para el propio Estado en su rol de consumidor, como para la sociedad en su conjunto. Se concluye con una aproximación al actual marco legal y sus perspectivas.

  5. A one dimensional model for the Laguna Verde boiling water reactor

    International Nuclear Information System (INIS)

    This paper presents a BWR model that includes the reactor vessel, two independent recirculation loops, the steam line, the reactor protection system and the pressure and feedwater control systems. The model has one-dimensional core thermalhydraulics and can handle reverse flow in the recirculation loops. Its point-kinetics core approximation has provided excellent results for all the steady state and operational transient conditions analyzed. Other features include a decay heat module, a heat transfer module with one node for the fuel and another for the cladding, some emergency systems, and all the valves associated with the steam lines. The modelling takes into account all the necessary details, while maintaining simplicity in the mathematical aspects: resulting in a flexible code with friendly interactive capabilities. Some specific transients run for the Laguna Verde Nuclear Power Plant are presented

  6. O perfil comunicativo de crianças brasileiras na escola em Cabo Verde

    OpenAIRE

    Delgado, Lígia Rêgo da Silva

    2008-01-01

    Sabe-se que existem cerca de 130 cidadãos brasileiros residindo actualmente em Cabo Verde. Integram esse total, empresários, responsáveis de missões religiosas, funcionários de embaixada e de organizações internacionais, com permanência temporária no país, além de cidadãos, na maioria do sexo feminino, que fixaram residência no Arquipélago, por razões matrimoniais. As famílias constituídas por pai cabo-verdiano e mãe brasileira (ou vice-versa) têm filhos, muitos deles nascid...

  7. Atividade extensionista e TI Verde conectando instituição e comunidade

    OpenAIRE

    Mozart Lemos de Siqueira; Cleusa Maria Collares Machado

    2013-01-01

    A área conhecida como TI Verde alia a evolução da Tecnologia da Informação (TI) à preservação do meio ambiente. Dentre as soluções é possível listar o aumento da vida útil dos computadores, redução e reciclagem de lixo eletrônico, equipamentos ligados somente enquanto estão sendo utilizados, virtualização e diminuição do consumo de papel em impressões desnecessárias. Neste contexto, o projeto de extensão apresentado nesse artigo faz um levantamento desses aspectos dentro do universo da instit...

  8. Dust generation and drought patterns in Africa from helium-4 in a modern Cape Verde coral

    Science.gov (United States)

    Mukhopadhyay, S.; Kreycik, P.

    2008-10-01

    We show that helium-4 (4He) concentrations in a modern Porites coral from Cape Verde provides a robust reconstruction of mineral dust loading over the Eastern Tropical Atlantic from mid-1950's to mid-1990's. The 4He record demonstrates pronounced increases in dust emission from North Africa associated with the severe droughts in the Sahel. Our record provides direct evidence that dust emission rates in the 1950's, prior to the onset of the Sahel droughts, were a factor of nine lower than during 1980-84. This large change in dust emission rate indicates global aerosol contents would have increased by ~45% over this period, which may have contributed to a reduction in solar radiation reaching the Earth's surface. We find that dust emission from North Africa is most closely related to drought patterns, rather than to changes in atmospheric circulation patterns resulting from climate oscillations, such as North Atlantic Oscillations and El Nino/Southern Oscillation.

  9. Indústria solar térmica em Cabo Verde : potencialidade do mercado

    OpenAIRE

    Nascimento, Cláusia Maria Fonseca da Rocha

    2008-01-01

    O presente trabalho pretende fazer uma análise do potencial do mercado Cabo-verdiano para a utilização da energia solar, através de algumas ferramentas de análise de mercado já conhecidas, nomeadamente as cinco forças de Porter, o Diamante de Porter, a análise PESTEL e a análise SWOT. O primeiro ponto que se pretende esclarecer é a questão: Será que Cabo Verde reúne as condições para ser considerado uma potencial mercado para a produção/ venda de sistemas solares para o a...

  10. Estimating of seismic return periods in Laguna Verde Nuclear Power Plant

    International Nuclear Information System (INIS)

    The study of seismic risk in the site of Laguna Verde Nuclear Power Plant and surroundings was made considering the different periods of seismic return and the probability of occurrence in distinct time intervals (50, 75, 100, 125, 150 years) starting with the distribution of first type of extreme values of Gumbel (G1), the value used for the assessment of lifetime of lump was 50 years, and the rest of the periods are used to evaluate temporary nuclear cemeteries, it is to say for reducing the radioactivity of burned fuel assemblies. The seismic data belongs to the seismicity catalog (1920-1982) elaborated around the site, which average magnitude was 5 in the Richter Scale and are considered as shallow and are located in the Continental crust of North American shelf, and are induced by the pressure of the cocos shelf, being 36 % of the seismic movements of intermediate value and two seismic movements of deep value. (Author)

  11. Los productos transgénicos. ¿Hacia una nueva revolución verde?

    OpenAIRE

    García Olmedo, Francisco; Fereres, Elias

    1999-01-01

    Cada día, muchas personas pasan hambre en nulo el Planeta. ¿Faltan realmente cultivos, o están donde menos se necesitan? ¡Se //mi agotado las posibilidades de crecir miento abiertas tras l/i conocida como revolución verde? Las modernas técnicas de ingeniería genética se abren paso, cada día con más fuerza, en un mundo en el que se entremezclan las necesidades humanas unís básicas. Y la controversia surge al plantearse si estas técnicas llegarán ii estar, algún din. al aleante ¡le las paites q...

  12. Genome-wide analyses of HTLV-1aD strains from Cape Verde, Africa

    Science.gov (United States)

    Zanella, Louise; de Pina-Araujo I, Isabel; Morgado, Mariza G; Vicente, Ana Carolina

    2016-01-01

    We characterised and reported the first full-length genomes of Human T-cell Lymphotropic Virus Type 1 subgroup HTLV-1aD (CV21 and CV79). This subgroup is one of the major determinants of HTLV-1 infections in North and West Africa, and recombinant strains involving this subgroup have been recently demonstrated. The CV21 and CV79 strains from Cape Verde/Africa were characterised as pure HTLV-1aD genomes, comparative analyses including HTLV-1 subtypes and subgroups revealed HTLV-1aD signatures in the envelope, pol, and pX regions. These genomes provide original information that will contribute to further studies on HTLV-1a epidemiology and evolution. PMID:27653363

  13. Intraplate seismicity across the Cape Verde swell: A contribution from a temporary seismic network

    Science.gov (United States)

    Vales, Dina; Dias, Nuno A.; Rio, Inês; Matias, Luís; Silveira, Graça; Madeira, José; Weber, Michael; Carrilho, Fernando; Haberland, Christian

    2014-12-01

    We present an analysis and characterization of the regional seismicity recorded by a temporary broadband seismic network deployed in the Cape Verde archipelago between November 2007 and September 2008. The detection of earthquakes was based on spectrograms, allowing the discrimination from low-frequency volcanic signals, resulting in 358 events of which 265 were located, the magnitudes usually being smaller than 3. For the location, a new 1-D P-velocity model was derived for the region showing a crust consistent with an oceanic crustal structure. The seismicity is located mostly offshore the westernmost and geologically youngest areas of the archipelago, near the islands of Santo Antão and São Vicente in the NW and Brava and Fogo in the SW. The SW cluster has a lower occurrence rate and corresponds to seismicity concentrated mainly along an alignment between Brava and the Cadamosto seamount presenting normal faulting mechanisms. The existence of the NW cluster, located offshore SW of Santo Antão, was so far unknown and concentrates around a recently recognized submarine cone field; this cluster presents focal depths extending from the crust to the upper mantle and suggests volcanic unrest. No evident temporal behaviour could be perceived, although the events tend to occur in bursts of activity lasting a few days. In this recording period, no significant activity was detected at Fogo volcano, the most active volcanic edifice in Cape Verde. The seismicity characteristics point mainly to a volcanic origin. The correlation of the recorded seismicity with active volcanic structures agrees with the tendency for a westward migration of volcanic activity in the archipelago as indicated by the geologic record.

  14. Seasonal variation of aliphatic amines in marine sub-micrometer particles at the Cape Verde islands

    Directory of Open Access Journals (Sweden)

    C. Müller

    2009-07-01

    Full Text Available Monomethylamine (MA, dimethylamine (DMA and diethylamine (DEA were detected at non-negligible concentrations in sub-micrometer particles at the Cap Verde Atmospheric Observatory (CVAO located on the island of São Vicente in Cape Verde during algal blooms in 2007. The concentrations of these amines in five stage impactor samples ranged from 0 to 30 pg m−3 for MA, 130 to 360 pg m−3 for DMA and 5 to 110 pg m−3 for DEA during the spring bloom in May 2007 and 2 to 520 pg m−3 for MA, 100 to 1400 pg m−3 for DMA, 90 to 760 pg m−3 for DEA during an unexpected winter algal bloom in December 2007. Anomalously high Saharan dust deposition and intensive ocean layer deepening were found at the Atmospheric Observatory and the associated Ocean Observatory during algal bloom periods. The highest amine concentrations in fine particles (impactor stage 2, 0.14–0.42 μm indicates that amines are likely taken up from the gas phase into the acidic sub-micrometer particles. The contribution of amines to the organic carbon (OC content ranged from 0.2 to 2.5%C in the winter months, indicating the importance of this class of compounds to the carbon cycle in the marine environment. Furthermore, aliphatic amines originating from marine biological sources likely contribute significantly to the organic nitrogen in the marine atmosphere. The average contribution of the amines to the total detected nitrogen content in submicron particles can be non-negligible, especially in the winter months (0.1% N to 1.5% N in the sum of nitrate, ammonium and amines. This indicates that these smaller aliphatic amines can be important for the carbon and the nitrogen cycles in the remote marine environment.

  15. Production and photosynthetic activity of Mimosa Verde and Mimosa Roxa lettuce in two farming systems

    Directory of Open Access Journals (Sweden)

    Aline Mabel Rosa

    2014-08-01

    Full Text Available Lettuce (Lactuca sativa L. is the most commonly consumed leaf vegetable in the Brazilian diet, and it is a good source of vitamins and minerals. It is widely grown in the conventional farming system. However, the hydroponic farming system has been gaining importance in the market, wining confidence from consumers, who are becoming increasingly more demanding on food quality. The objective of this study was to evaluate the performance of two lettuce cultivars on hydroponic and conventional farming systems for the production of fresh mass (FM and dry mass (DM, photosynthesis, contents of chlorophyll and anthocyanin. The following two experiments were carried out: hydroponics farming (HF and conventional farming (CF, performed in protect and unprotect environments, respectively, in Florianópolis, SC. Mimosa Verde cultivar (MV showed greater fresh mass than Mimosa Roxa (MR, in both farming systems and the two cultivars presented better performance in the hydroponic system (287.7 g MV and 139.1 g MR than the conventional system (129.7 g MV and 111.8 g MR. Mimosa Verde cultivar presented lower average contents of total chlorophyll (7.7 mg g-¹ FM than Mimosa Roxa (11.8 mg g-¹FM, and both cultivars displayed higher means for this variable in the hydroponic farming system. Mimosa Roxa presented higher contents of anthocyanin in the conventional system (88.24 mg g-¹ FM than the ones in the hydroponic system (36.89 mg g-¹ FM. The best results for CO2 net assimilation rate regarded to photosyntheticaly active photon flux density were found in the hydroponic system, for both lettuce cultivars. Variation in the contents of chlorophyll were also found. Those variations were higher in the protected system than in the hydroponic system and contents of anthocyanin were higher in the conventional system.

  16. Turbine model for the Laguna Verde nucleo electric central based in the RELAP code

    International Nuclear Information System (INIS)

    The Nuclear Power stations as Laguna Verde occupy at the present time a place every time but important as non pollutant alternative, economic and trusty to generate electricity. It is for it that the Group of Nuclear Engineering of the Engineering Faculty (GrlNFI) of the National Autonomous University of Mexico (UNAM) it develops investigation projects applied to Nuclear Centrals. One of the projects in process is the development of a Classroom simulator, which it can configures to consent to diverse models of nuclear systems with training purposes in normal operation, or, to consent to specialized nuclear codes for the analysis of transitory events and have a severe accident. This work describes the development, implementation and it proves of a simplified model of the Main turbine to be integrated to the group of models of the Classroom simulator. It is part of the current effort of GrlNFI guided to obtain a representation of all the dynamic models necessary to simulate the Plant Balance of the Laguna Verde Central. It is included the development of the unfolding graphic which represent the modeling of the Main turbine, and of the control interface that allows the user to manipulate in simple way, direct and interactive this device during the training or the analysis. With this work it is wanted to contribute to the training of new technicians and to support the operation personnel of the Centrals. Also, the developed infrastructure is guided to contribute in the design and analysis of new Nuclear Power stations with the contribution of new computational tools for the visualization, simulation and process control. (Author)

  17. Susceptibility profile of Aedes aegypti from Santiago Island, Cabo Verde, to insecticides.

    Science.gov (United States)

    Rocha, Hélio Daniel Ribeiro; Paiva, Marcelo Henrique Santos; Silva, Norma Machado; de Araújo, Ana Paula; Camacho, Denise dos Reis da Rosa de Azevedo; Moura, Aires Januário Fernandes da; Gómez, Lara Ferrero; Ayres, Constância Flávia Junqueira; Santos, Maria Alice Varjal de Melo

    2015-12-01

    In 2009, Cabo Verde diagnosed the first dengue cases, with 21,137 cases reported and Aedes aegypti was identified as the vector. Since the outbreak, chemical insecticides and source reduction were used to control the mosquito population. This study aimed to assess the susceptibility of A. aegypti populations from Santiago, Cabo Verde to insecticides and identify the mechanisms of resistance. Samples of A. aegypti eggs were obtained at two different time periods (2012 and 2014), using ovitraps in different locations in Santiago Island to establish the parental population. F1 larvae were exposed to different concentrations of insecticides (Bacillus thuringiensis var israelensis (Bti), diflubenzuron and temephos) to estimate the lethal concentrations (LC90) and calculate the respective rate of resistance (RR90). Semi-field tests using temephos-ABATE(®) were performed to evaluate the persistence of the product. Bottle tests using female mosquitoes were carried out to determine the susceptibility to the adulticides malathion, cypermethrin and deltamethrin. Biochemical and molecular tests were performed to investigate the presence of metabolic resistance mechanisms, associated with the enzymes glutathione S-transferases (GSTs), esterases and mixed-function oxidases (MFO) and to detect mutations or alterations in the sodium channel and acetylcholinesterase genes. A. aegypti mosquitoes from Santiago exhibited resistance to deltamethrin, cypermethrin (mortalityinsecticides used for vector control, deltamethrin and temephos. To our knowledge, this is the first report of temephos resistance in an African A. aegypti population. The low level of temephos resistance was maintained from 2012-2014, which suggested the imposition of selective pressure, although it was not possible to identify the resistance mechanisms involved. These data show that the potential failures in the local mosquito control program are not associated with insecticide resistance.

  18. Analysis of internal events for the Unit 1 of the Laguna Verde nuclear power station

    International Nuclear Information System (INIS)

    This volume presents the results of the starter event analysis and the event tree analysis for the Unit 1 of the Laguna Verde nuclear power station. The starter event analysis includes the identification of all those internal events which cause a disturbance to the normal operation of the power station and require mitigation. Those called external events stay beyond the reach of this study. For the analysis of the Laguna Verde power station eight transient categories were identified, three categories of loss of coolant accidents (LOCA) inside the container, a LOCA out of the primary container, as well as the vessel break. The event trees analysis involves the development of the possible accident sequences for each category of starter events. Events trees by systems for the different types of LOCA and for all the transients were constructed. It was constructed the event tree for the total loss of alternating current, which represents an extension of the event tree for the loss of external power transient. Also the event tree by systems for the anticipated transients without scram was developed (ATWS). The events trees for the accident sequences includes the sequences evaluation with vulnerable nucleus, that is to say those sequences in which it is had an adequate cooling of nucleus but the remoting systems of residual heat had failed. In order to model adequately the previous, headings were added to the event tree for developing the sequences until the point where be solved the nucleus state. This process includes: the determination of the failure pressure of the primary container, the evaluation of the environment generated in the reactor building as result of the container failure or cracked of itself, the determination of the localization of the components in the reactor building and the construction of boolean expressions to estimate the failure of the subordinated components to an severe environment. (Author)

  19. Utilização de nitrogênio de adubos verde e mineral pelo milho

    Directory of Open Access Journals (Sweden)

    W. B. Scivittaro

    2000-12-01

    Full Text Available Desenvolveu-se, na Estação Experimental de Piracicaba - Instituto Agronômico (SAA-SP, de março/94 a setembro/95, um experimento para avaliar o potencial de fornecimento de nitrogênio de adubos, verde e mineral, aplicados, de forma exclusiva ou combinada, na cultura do milho. Em uma primeira fase, produziram-se, simultaneamente, mucuna-preta sem marcação isotópica no campo e adubo verde marcado com 15N em casa de vegetação e, na segunda, a mucuna-preta foi incorporada ao solo, cultivando-se, em seguida, milho. O experimento constou dos seguintes tratamentos: testemunha, 15N-mucuna-preta (4,4 t ha-1 de matéria seca e 25,8 g kg-1 de N, 15N-uréia (50 e 100 kg ha-1 de N e as possíveis combinações de mucuna-preta e uréia marcadas ou não com 15N. Esses foram dispostos em delineamento experimental de blocos ao acaso com quatro repetições. O solo forneceu a maior parte do N acumulado nas plantas de milho, seguido, em ordem decrescente, pela uréia e mucuna-preta. A contribuição da uréia para o N acumulado nas plantas de milho foi proporcional à dose aplicada. O aproveitamento de nitrogênio da uréia pelo milho foi maior que o da mucuna-preta, sendo os melhores efeitos proporcionados pela combinação das duas fontes.

  20. Tracking effusive eruptions in near real-time: 2014 Fogo (Cape Verde) eruption

    Science.gov (United States)

    Laiolo, Marco; Coppola, Diego; Cigolini, Corrado; Faria, Bruno; Ripepe, Maurizio

    2015-04-01

    The Fogo volcano (Cape Verde), after almost 20 years of inactivity, entered in a new effusive phase on November 23, 2014. The eruption occurred on the Fogo's Pico cone inside the Cha Caldera where the lava flow caused the evacuation of the Bangaeira and Portela inhabitants. To track the thermal evolution of this eruption, we extended the near-real time processing of the MIROVA (Middle InfraRed Observation of Volcanic Activity) algorithm to Fogo island. MIROVA is a hot-spot detection system based on the analysis of the Moderate Resolution Imaging Spectroradiometer (MODIS) data that provide thermal maps (1 km resolution) and radiant flux estimates, in near real time (1-4 hours from satellite overpass). Thermal output retrieved by MIROVA can be converted into time-average lava discharge rates allowing the identification of ongoing effusive trends. During the first 45 days of activity the eruption shows a waxing-waning trend typical of pressurized closed systems. Preliminary results indicate that MIROVA is particularly efficient to provide near real-time data that are critical for better assessing volcanic risk, and to help the decision-makers during volcanic crisis. Data requested by the UNDAC (United Nations Disaster Assessment and Coordination) team operating in Cape Verde, through the Emergency Response Coordination Center (ERCC) of the European Mechanism of Civil Protection, were provided in near real-time via web to the National Institute of Meteorology and Geophysics and to National Civil Protection. Once compared to seismological data, information provided by MIROVA have been successfully used during the volcanic crisis.

  1. Technical specifications, Palo Verde Nuclear Generating Station, Unit No. 3 (Docket No. STN 50-530): Appendix ''A'' to License No. NPF-74

    International Nuclear Information System (INIS)

    This report presents specifications for the Palo Verde Nuclear Generating Station, Unit No. 3 concerning: safety limits and limiting safety system settings; limiting conditions for operation and surveillance requirements; design features; and administrative controls. (FI)

  2. Planning of activities in the Laguna Verde Central planning at 12 weeks; Planeacion de Actividades en la Central Laguna Verde planeacion a doce semanas

    Energy Technology Data Exchange (ETDEWEB)

    Chimalpopoca, C. [Comision Federal de Electricidad, Central Laguna Verde, Subgerencia General de Operacion y Planeacion, Veracruz (Mexico)]. e-mail: carlos.chimalpopoca@cfe.gob.mx

    2007-07-01

    The universe of works that are carried out in a nuclear facility to maintain effective the structures, systems and components require of a continuous analysis, in the order of the maintenance frequencies that can be of the preventive, predictive or corrective type. Each component is associated to reserve parts, readiness of systems, in fulfillment to the operation technical specifications, to the environment of the one work; each component requires of a planning level, where it is distinguished with clarity when they are executed, in the operation stage, stop or recharge. This work has as end to show like the activities are planned during the operation, using planning methods to twelve weeks, where the reach of the task is conceptualized, operative requirements, of reserve parts, of the work environment analysis, of those radiological conditions, of the authorizations for their execution, the same execution and the evaluation post work like a technique to maintain in continuous improvement the tasks of the maintenance of the Units of the Power station. A motor valve to be worked in its internals requires access to the work point, it requires bill of the system, electric disconnection, maneuvers to disassemble actuators and retirement of thermal isolation if it applies, reserve parts of the caps joints, control mechanisms, personal, tools, radiological control. The success of the continuous operation of a power station is in the planning quality, the attention of each one of the details to assure that the components, structures and components stay effective to make their function when they are demanded. The planning task requires of experience and knowledge of each some of the components, the task of planning of activities and its execution is multidisciplinary This work has that purpose, to show the planning tools in the Laguna Verde Nuclear Power station, under the concept of twelve weeks. (Author)

  3. Actinides inventory of the nuclear power plant of Laguna Verde Unit 1; Inventario de actinidos de la Central Nuclear Laguna Verde Unidad 1

    Energy Technology Data Exchange (ETDEWEB)

    Martinez C, E.; Ramirez S, J. R. [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico); Alonso V, G., E-mail: eduardo.martinez@inin.gob.mx [IPN, Escuela Superior de Fisica y Matematicas, Av. Instituto Politecnico Nacional s/n, U. P. Adolfo Lopez Mateos, Col. San Pedro Zacatenco, 07738 Mexico D. F. (Mexico)

    2013-10-15

    At the present time 435 nuclear power reactors exist for the electricity generation operating in the world and 63 in construction. Mexico has two reactors type BWR in the nuclear power plant of Laguna Verde. The nuclear fuel that is used in the nuclear reactors is retired of the reactor core when the energy that this contained has been extracted. This used fuel is known as spent nuclear fuel, the problem with this fuel is that was irradiated inside the reactor and continuous emitting a high radiation, as well as a significant heat quantity when being extracted, for what is necessary to maintain it in cooling and with some shielding to be protected of the radiation that emits. This objective is achieved confining the fuel in the spent nuclear fuel pool, where it is cooled and the same pool provides the necessary shielding to maintain the surroundings in safety radiation levels for the personnel that work in the power plant. An inconvenience of the pools is its limited storage capacity and that after certain time is necessary to remove the fuel, according to the established regulation to continue operating. To correct this inconvenience, two alternatives of spent fuel disposition exist, 1) the final disposition in deep geologic repositories and 2) the reprocessing and recycled of spent fuel. Each alternative presents its particularities and specific problems; however taking many years to be able to implement anyone of them. To carry out the second option, is indispensable to estimate the total mass of actinides generated in the spent nuclear fuel, that which represents to develop a methodology for it, this action is the main purpose of the present work. Inside our calculation method was necessary to appeal to diverse computation tools as the codes Origin-S and Keno V.a. Later on the obtained were compared with a problem type Benchmark, being obtained a smaller absolute error to 1.0%. (Author)

  4. Optimization of reloading Laguna Verde Central U1/U2, Federal Electricity Commission; Optimizacion de recargas Central Laguna Verde U1/U2, Comision Federal de Electricidad

    Energy Technology Data Exchange (ETDEWEB)

    Espinosa G, J.M. [Central Nucleoelectrica Laguna Verde, Carretera Cardel-Nautla Km. 45.5, Municipio de Alto Lucero, Veracruz (Mexico)

    2006-07-01

    The Laguna Verde Central from the beginning of the commercial operation settled down as maximum priority 'the total safety in its operation' taking in consideration the so much experience of the good operation and of multiple recharges made in a sure and reliable way, and without separate us of the safety mystic of the CLV, but looking for to be better every day a new challenge it settled down 'to compare us with the best plants in the world' and certainly to work to classify us like one of them. For this we established a 4.0 year old plan (2003/2006) for the effectiveness all the processes in the power station that allowed us to measure our acting with the same parameters that settle down at international level (nuclear safety, industrial safety, radiological safety, capacity factor, readiness factor, cleaning of the power station, attachment to procedures, attention to the detail and certainly to be competitive in the economic aspect, summing up means to be good in all the aspects). All the above mentioned would allow us to qualify us as level 1 of WANO (world proprietors association of nuclear centrals) at the end of the year 2006 and to pass to be part of this select group. After analyzing the acting record of the power station, evaluating our technical and economic capacity, the location of the installation besides revising the international experiences was defined that one of the concepts that impact considerably so much to the capacity factors and availability besides the dose and production cost is the duration of the recharge periods, for this reason the present work is elaborated. (Author)

  5. Composition and structure of aquatic insect assemblages of Yungas mountain cloud forest streams in NW Argentina Composición y estructura de asociaciones de insectos acuáticos de arroyos de selva nublada de Yungas del NO Argentino

    Directory of Open Access Journals (Sweden)

    Natalia Von Ellenrieder

    2007-12-01

    Full Text Available Thirty three lotic environments in the Yungas mountain cloud forest of NW Argentina were sampled both in undisturbed forest areas and sites altered by human activities. Aquatic insects of 143 taxa in 55 families were collected. Cluster analysis suggested altitude as one of the main structuring variables of aquatic insect communities in these streams, and its importance was confirmed by non-metric multidimensional scaling (NMS; the environmental parameters measured that were best correlated with the ordination were altitude, water temperature, latitude and channel variables (width, percentage of large and small woody debris, of undercut banks, cobble and coarse gravel. Multi response permutation procedures (MRPP showed streams in well preserved areas to significantly differ in their composition from streams in disturbed areas. Proportion of Elmidae and of Plecoptera individuals and number of Trichoptera taxa were the biological metrics best correlated with the local disturbance gradient, suggesting that an 'ElPT' index could be a useful component in the evaluation of the ecological status of these environments. Indicator species analyses identified some potential indicators of stream condition and disturbance factors affecting these streams.Treinta y tres ambientes lóticos en las selvas nubladas de montaña de las Yungas del NO Argentino, fueron muestreados tanto en ambientes no modificados como alterados por actividades humanas. Insectos acuáticos de 143 taxones en 55 familias fueron colectados. El análisis de agrupamientos sugirió que la altura es una de las variables principales en la estructuración de las comunidades de insectos en estos arroyos, y la importancia de esta variable fue confirmada mediante un ordenamiento no-métrico multi-dimensional (NMS; los parámetros ambientales que mejor se correlacionaron con la ordenación fueron: altura, temperatura del agua, latitud y variables del canal (ancho, porcentaje de detritos le

  6. Dieta y ecomorfología de la ictiofauna del arroyo Manantiales, provincia de Buenos Aires, Argentina Diet and ecomorphology of the ichthyofauna of Manantiales stream, Buenos Aires province, Argentina

    OpenAIRE

    Eduardo M Fernández; Ricardo A Ferriz; Cristina A Bentos; Guillermo R. López

    2012-01-01

    Se estudio la correlación entre dieta y morfología de 19 especies de peces del arroyo Manantiales, cabecera del río samborombón, provincia de Buenos Aires, Argentina. Las especies fueron clasificadas en cuatro grupos tróficos: carnívoros, omnívoros, insectívoros y detritívoros- alguívoros. Se analizaron 12 atributos ecomor-fológicos relacionados con el uso del hábitat y la alimentación con el fin de distinguir patrones ecomorfológicos de las especies y de las especies con el alimento consumid...

  7. Geoquímica de ríos de montaña en las Sierras Pampeanas: I. Vertientes y arroyos del batolito de Achala, provincia de Córdoba, Argentina

    OpenAIRE

    A. I. Pasquini; L. B. Grosso; A. P. Mangeaud; P. J. Depetris

    2002-01-01

    Se analiza la composición química de vertientes y arroyos de altura (>1100 m s.n.m.) sobre el batolito de Achala en las Sierras Pampeanas de Córdoba, donde la litología dominante es un monzogranito porfírico. El agua tiene una composición mayoritaria bicarbonatada/sódico-potásica a cálcica. La concentración de los elementos disueltos tiene un orden de magnitud entre 10³ y 10(7) veces inferior a la corteza continental superior y al granito dominante. La concentración de los elementos químicos ...

  8. Seismic qualification tests of fans of the NPP of Laguna Verde U-1 and U-2; Pruebas de calificacion sismica de ventiladores de la Central Laguna Verde U1 and U2

    Energy Technology Data Exchange (ETDEWEB)

    Jarvio C, G.; Garcia H, E. E.; Arguelles F, R.; Vela H, A. [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico); Naranjo U, J. L., E-mail: gilberto.jarvio@inin.gob.mx [Comision Federal de Electricidad, Gerencia de Centrales Nucleoelectricas, Subgerencia de Ingenieria, Carretera Veracruz-Medellin Km 7.5, Dos Bocas, Veracruz (Mexico)

    2013-10-15

    This work presents the results of the seismic qualification tests applied to the fans that will be installed in the control panels of the three divisions of the diesel generators of the nuclear power plant (NPP) of Laguna Verde, Unit-1 and Unit-2. This seismic qualification process of the fans was carried out using two specimens that were tested in the seismic table (vibrating) of the Engineering Institute of Universidad Nacional Autonoma de Mexico (UNAM), in accordance with the requirements of the standard IEEE 344-1975, to satisfy the established requirements of seismic qualification in the technical specifications and normative documents required by the nuclear standards, in order to demonstrate its application in the diesel generators Divisions I, II and III of the NPP. The seismic qualification tests were developed on specimens that were retired of the NPP of Laguna Verde recently with a service life of 7.75 years. (Author)

  9. Analysis of internal events for the Unit 1 of the Laguna Verde Nuclear Power Station. Appendixes; Analisis de eventos internos para la Unidad 1 de la Central Nucleoelectrica de Laguna Verde. Apendices

    Energy Technology Data Exchange (ETDEWEB)

    Huerta B, A.; Lopez M, R. [Comision Nacional de Seguridad Nuclear y Salvaguardias, 03000 Mexico D.F. (Mexico)

    1995-07-01

    This volume contains the appendices for the accident sequences analysis for those internally initiated events for Laguna Verde Unit 1, Nuclear Power Plant. The appendix A presents the comments raised by the Sandia National Laboratories technical staff as a result of the review of the Internal Event Analysis for Laguna Verde Unit 1 Nuclear Power Plant. This review was performed during a joint Sandia/CNSNS multi-day meeting by the end 1992. Also included is a brief evaluation on the applicability of these comments to the present study. The appendix B presents the fault tree models printed for each of the systems included and analyzed in the Internal Event Analysis for LVNPP. The appendice C presents the outputs of the TEMAC code, used for the cuantification of the dominant accident sequences as well as for the final core damage evaluation. (Author)

  10. Analysis of internal events for the Unit 1 of the Laguna Verde Nuclear Power Station. Appendixes; Analisis de eventos internos para la Unidad 1 de la Central Nucleoelectrica de Laguna Verde. Apendices

    Energy Technology Data Exchange (ETDEWEB)

    Huerta B, A.; Lopez M, R. [Comision Nacional de Seguridad Nuclear y Salvaguardias, 03000 Mexico D.F. (Mexico)

    1995-07-01

    This volume contains the appendices for the accident sequences analysis for those internally initiated events for Laguna Verde Unit 1, Nuclear Power Plant. The appendix A presents the comments raised by the Sandia National Laboratories technical staff as a result of the review of the Internal Event Analysis for Laguna Verde Unit 1 Nuclear Power Plant. This review was performed during a joint Sandia/CNSNS multi-day meeting by the end 1992. Also included is a brief evaluation on the applicability of these comments to the present study. The appendix B presents the fault tree models printed for each of the systems included and.analyzed in the Internal Event Analysis for LVNPP. The appendice C presents the outputs of the TEMAC code, used for the cuantification of the dominant accident sequences as well as for the final core damage evaluation. (Author)

  11. Características del permafrost costero (criopeg con el uso de técnicas geoeléctricas, arroyo Díaz, isla Marambio, península Antártica

    Directory of Open Access Journals (Sweden)

    Adrián Silva Busso

    2013-12-01

    Full Text Available En las áreas costeras del norte de la península Antártica el permafrost suele poseer contenidos diferentes de hielo e incluso ausencia del mismo intercalando aguas dulces, salobres y salinas. Estos horizontes pueden estar estratificados entre sí con niveles que contienen hielo en diferente proporción. Esta zona particular del permafrost costero se conoce como criopeg y da lugar a un contraste resistivo natural que facilita el estudio de los procesos geocriológicos e hidrogeológicos mediante el uso de métodos geoeléctricos 1D y 2D, que pueden ser interpretados en conjunto con el análisis de ciertos parámetros de la dinámica costera. Se ha elegido como zona de estudio la costa de la bahía López de Bertodano, entre la desembocadura del arroyo Díaz y cabo Bodman en la isla Marambio. La misma es una costa dominada por mareas de hasta dos metros de amplitud donde predomina el material limos arcilloso proveniente de la erosión de los afloramientos de la isla. Las sondeos geoeléctricos estudiados permiten observar niveles resistivos superficiales de la capa activa con valores que oscilan entre 45- 75 ohm.m en zonas donde no ingresa la marea y valores entre 8 - 15 ohm.m en las zonas intermareales. Los mismos son muy discontinuos arealmente y en profundidad, al menos en los primeros 30 metros, y en superficie coinciden con los sectores intermareales y los valores resistivos más elevados se encuentran a mayor profundidad. Una interpretación posible es el efecto de la infiltración de agua salina del mar y su posterior mezcla con el hielo del permafrost coincidentemente en una zona de discontinuidad geológica como lo es el arroyo Díaz.

  12. Factores Associados ao ajuste Esscolar e o Bem-Estar Psicologico dos Adolescentes em Cabo Verde=Factors Associated to School Adjustment and Psychological Well-being of Adolescents in Cabo Verde

    OpenAIRE

    Da Lomba Rocha Gonçalves, Tito Olavo

    2014-01-01

    Actualmente, en Cabo Verde, la tasa de adolescentes desadaptados con la escuela y consecuentemente con menor percepción de bienestar subjetivo ha aumentado significativamente, principalmente en las ciudades donde se encuentran las escuelas de los alumnos que constituyen nuestra muestra de estudio. En este contexto, la exposición al desajuste escolar y al malestar psicológico constituyen un gran desafío tanto para los adolescentes como para el gobierno. Por un lado, los adolescentes necesitan ...

  13. Internal event analysis of Laguna Verde Unit 1 Nuclear Power Plant. System Analysis; Analisis de Eventos Internos para la Unidad 1 de la Central Nucleoelectrica de Laguna Verde. Analisis de sistemas

    Energy Technology Data Exchange (ETDEWEB)

    Huerta B, A.; Aguilar T, O.; Nunez C, A.; Lopez M, R. [Comision Nacional de Seguridad Nuclear y Salvaguardias, 03000 Mexico D.F. (Mexico)

    1993-07-01

    The Level 1 results of Laguna Verde Nuclear Power Plant PRA are presented in the {sup I}nternal Event Analysis of Laguna Verde Unit 1 Nuclear Power Plant{sup ,} CNSNS-TR-004, in five volumes. The reports are organized as follows: CNSNS-TR-004 Volume 1: Introduction and Methodology. CNSNS-TR-004 Volume 2: Initiating Event and Accident Sequences. CNSNS-TR-004 Volume 3: System Analysis. CNSNS-TR-004 Volume 4: Accident Sequence Quantification and Results. CNSNS-TR-004 Volume 5: Appendices A, B and C. This volume presents the results of the system analysis for the Laguna Verde Unit 1 Nuclear Power Plant. The system analysis involved the development of logical models for all the systems included in the accident sequence event tree headings, and for all the support systems required to operate the front line systems. For the Internal Event analysis for Laguna Verde, 16 front line systems and 5 support systems were included. Detailed fault trees were developed for most of the important systems. Simplified fault trees focusing on major faults were constructed for those systems that can be adequately represent,ed using this kind of modeling. For those systems where fault tree models were not constructed, actual data were used to represent the dominant failures of the systems. The main failures included in the fault trees are hardware failures, test and maintenance unavailabilities, common cause failures, and human errors. The SETS and TEMAC codes were used to perform the qualitative and quantitative fault tree analyses. (Author)

  14. Super compacting of drums with dry solid radioactive waste in the nuclear power plant of Laguna Verde;Super compactacion de bidones con desecho radiactivo solido seco en la central nucleo electrica Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Ramirez G, R.; Lara H, M. A.; Cabrera Ll, M.; Verdalet de la Torre, O., E-mail: marco.lara@cfe.gob.m [Comision Federal de Electricidad, Central Nucleoelectrica de Laguna Verde, Carretera Nautla-Cardel Km. 42.5, Alto Lucero, Veracruz (Mexico)

    2009-10-15

    The nuclear power plant of Laguna Verde located in the Gulf of Mexico, completes in this 2009, nineteen years to produce by nuclear means 4.78% of the electric power that Mexico requires daily. During this time, the Unit 1 has generated more of 88.85 million mega watt-hour and the Unit 2 more of 69.48 million mega watt-hour with an availability average of 83.55%. Derived of their operation cycles, the nuclear power plant has generated (as any other installation of its type) radioactive wastes of low activity that at the moment are temporarily stored in the site. Due to the life cycle of the nuclear power plant, actually has become necessary to begin a project series focused to continue guaranteeing the storage of these wastes, guarantee that is a license requirement for the operation of this nuclear installation before the National Commission of Nuclear Security and Safeguards. The Federal Commission of Electricity beginning a project that allows continue guaranteeing space of sufficient storage for the wastes that the nuclear power plant of Laguna Verde could generate for the rest of its useful life, this project consisted on a process of physical volume reduction of dry solid radioactive wastes denominated super compacting, it has made possible to reduce the volume that these wastes occupy in the temporary storage noted Dry Solid Radioactive Wastes Deposit located inside the site that occupies the nuclear power plant of Laguna Verde. This work presents the super compacting results, as well as a description of the realization of this task until concluding with the super compacting of 5,854 drums with dry solid radioactive waste of low activity. We will enunciate which were the radiological controls that the Department of Radiological Protection of the nuclear power plant of Laguna Verde applied to this work that was realized for first time in Mexico and the nuclear power plant. (Author)

  15. Ilhas, parentesco e mobilidade infantil: Diálogos Brasil-Cabo Verde (passando pela França

    Directory of Open Access Journals (Sweden)

    Fernanda Bittencourt Ribeiro

    2013-01-01

    Full Text Available In this article I focus on comments raised by the presentation of Andréa Lobo in the Cycle of debates: Diálogos Brasil-Cabo Verde (Dialogues Brazil-Cape Verde. From an ethnographic study made at an institution of child protection, located on Yeu island (France, it offers some counterpoints between these two ethnographic contexts, on the Boa Vista and Yeu islands. Therefore, insularity, child mobility and rights of the child are issues addressed at the intersection of studies on kinship and anthropology of childhood. This exercise highlights the relative social isolation that brings families called "single-parent in difficulty" to the institution on Yeu island, in contrast to the abundance of relationships in which child mobility is central to the dynamics of kinship and relatedness on Boa Vista island.

  16. Cabo Verde, "Pousada" nos Caminhos do Atlântico. Interinluências culturais num arquipélago miscigenado

    OpenAIRE

    Évora, José Silva

    2014-01-01

    [POR] Descoberto entre 1460 e 1462, o Arquipélago de Cabo Verde, situado no Oceano Atlântico, constituiu ao longo de vários séculos, escala obrigatória dos navios que faziam as ligações atlânticas entre os portos das Américas, da Europa e da África Graças a sua situação privilegiada, o espaço cabo-verdiano não foi um mero ponto de reabastecimento, mas também um importante ponto de cruzamento de culturas e de raças. Pretende-se, neste texto, abordar o papel que Cabo Verde teve no Atlântico inc...

  17. ESTUDIO COMPARATIVO DE DIFERENTES ESPECIES DE ABONOS VERDES Y SU INFLUENCIA EN EL CULTIVO DEL MAÍZ

    Directory of Open Access Journals (Sweden)

    Margarita García

    2002-01-01

    Full Text Available En el período mayo-noviembre de los años 1996-1997, se llevó a cabo un experimento de campo durante dos campañas consecutivas, sobre un suelo Ferralítico Rojo de la provincia La Habana, con el objetivo de evaluar la efectividad de diferentes especies de leguminosas utilizadas como abonos verdes en rotación sobre el cultivo del maíz, determinando asimismo la eficiencia del N aportado por estas. Se comparó el efecto de Crotalaria juncea, Stizolobium aterrimum, Canavalia ensiformis y Sesbania rostrata con dos testigos: el primero sin abono verde y sin fertilizante mineral, el segundo sin abono verde pero con fertilizante mineral. Se distribuyeron los tratamientos en el campo mediante un diseño de bloques al azar con cuatro réplicas. En cada caso se evaluó el aporte de fitomasa y nutrientes de los abonos verdes estudiados, así como el efecto de estos sobre las características físicas del suelo, el rendimiento del maíz y sus componentes. Se determinó el coeficiente de aprovechamiento del nitrógeno incorporado con los abonos verdes mediante los métodos de las diferencias e isotópico. De las cuatro especies de abonos verdes evaluadas, Crotalaria juncea y Sesbania rostrata fueron las de mejor comportamiento en el cultivo del maíz en las dos campañas evaluadas, estando esta respuesta en dependencia del alto volumen de fitomasa y nutrientes aportados así como por la elevada relación C:N del material que estas incorporan. Crotalaria juncea y Sesbania rostrata tuvieron aportes de 7.7 y 10.5 t.ha-1, así como de 113 y 156 kg.ha-1 de nitrógeno respectivamente. Asimismo, el nitrógeno incorporado por la mucuna fue el más eficientemente utilizado por el cultivo del maíz (88.7 % en comparación con el resto de las especies, cuyos coeficientes variaron de mayor a menor en el siguiente orden: 39.8, 34.6 y 25.2 % para sesbania, crotalaria y canavalia respectivamente. Los abonos verdes incorporados incrementaron asimismo el contenido de

  18. Potencialidades das ilhas de Cabo Verde para o turismo: subsídios para uma gestão integrada

    OpenAIRE

    Mendonça, Carla Vieira Gonçalves Tavares

    2012-01-01

    Dissertação apresentada para cumprimento dos requisitos necessários à obtenção do grau de Mestre em Gestão do Território/ Especialização em Ambiente e Recursos Naturais A dissertação apresenta potencialidades das ilhas de Cabo Verde para a atividade turística e aponta algumas orientações estratégicas para o uso sustentável dos recursos naturais das ilhas. Cabo Verde, como país insular com fragilidades em termos ecológicos, suscetíveis a catástrofes naturais, vulnerável a ação antrópica ...

  19. Studies of sibling Drosophila species from Laguna Verde, Veracruz, Mexico: I. Species frequencies, viability, desiccation resistance, and vagility.

    Science.gov (United States)

    de la Rosa, M E; Guzmán, J; Levine, L; Olvera, O; Rockwell, R F

    1989-01-01

    The sibling species Drosophila melanogaster and D. simulans were collected at Laguna Verde, Veracruz, Mexico. D. melanogaster was found in significantly greater frequency than was D. simulans. Ten isofemale lines of each species were tested for egg to adult viability, desiccation resistance, and vagility. D. melanogaster surpassed D. simulans in all three characteristics. The findings are discussed with reference to the climatic conditions at Laguna Verde and the expected effect of such an environment on the relative frequencies of these species. The dichotomous results in regard to desiccation resistance and vagility that were observed between recently collected D. melanogaster and the Oregon-R laboratory stock of that species are also discussed. PMID:2493497

  20. Study of multi cycles with FCS-II code for Unit 1 of Laguna Verde Nuclear Power Plant

    International Nuclear Information System (INIS)

    A study of 20 operating cycles for the BWR type reactor of Laguna Verde Nuclear Power Plant UNIT 1 is presented. The study was performed by the optimization group of fuel reloading by means of FCS-II code which is part of a computing package of Fuel Management System; with this results, part of the information concerning to a multi cycles analysis is evaluated; the information was provided by General Electric (GE) to Comision Federal de Electricidad. This study is part of the inter-institutional project of Fuel Management inside core for Laguna Verde Nuclear Power Plant where the involved institutions are Instituto de Investigaciones Electricas and Instituto Nacional de Investigaciones Nucleares under the direction of Comision Federal de Electricidad. (Author)

  1. Las buenas semillas. Plantas, capital genético y Revolución Verde en Costa Rica

    Directory of Open Access Journals (Sweden)

    Wilson Picado Umaña

    2013-03-01

    Full Text Available Este artículo analiza el desarrollo de la Revolución Verde en la producción de arroz de Costa Rica. Muestra el papel fundamental que jugaron los cambios en el capital biológico (semillas en la transformación de la agricultura del arroz a partir de la década de 1940. Se parte de la hipótesis que la selección del material genético nuevo fue determinante para la consolidación del paquete técnico asociado con la Revolución Verde, así como para el fortalecimiento de las formas capitalistas de producción. La investigación se fundamenta en la revisión de documentos agronómicos, entrevistas, series estadísticas y revistas agrícolas.

  2. The admixture structure and genetic variation of the archipelago of Cape Verde and its implications for admixture mapping studies.

    Directory of Open Access Journals (Sweden)

    Sandra Beleza

    Full Text Available Recently admixed populations offer unique opportunities for studying human history and for elucidating the genetic basis of complex traits that differ in prevalence between human populations. Historical records, classical protein markers, and preliminary genetic data indicate that the Cape Verde islands in West Africa are highly admixed and primarily descended from European males and African females. However, little is known about the variation in admixture levels, admixture dynamics and genetic diversity across the islands, or about the potential of Cape Verde for admixture mapping studies. We have performed a detailed analysis of phenotypic and genetic variation in Cape Verde based on objective skin color measurements, socio-economic status (SES evaluations and data for 50 autosomal, 34 X-chromosome, and 21 non-recombinant Y-chromosome (NRY markers in 845 individuals from six islands of the archipelago. We find extensive genetic admixture between European and African ancestral populations (mean West African ancestry = 0.57, sd = 0.08, with individual African ancestry proportions varying considerably among the islands. African ancestry proportions calculated with X and Y-chromosome markers confirm that the pattern of admixture has been sex-biased. The high-resolution NRY-STRs reveal additional patterns of variation among the islands that are most consistent with differentiation after admixture. The differences in the autosomal admixture proportions are clearly evident in the skin color distribution across the islands (Pearson r = 0.54, P-value<2e-16. Despite this strong correlation, there are significant interactions between SES and skin color that are independent of the relationship between skin color and genetic ancestry. The observed distributions of admixture, genetic variation and skin color and the relationship of skin color with SES relate to historical and social events taking place during the settlement history of Cape Verde, and have

  3. In situ aerosol characterization at Cape Verde Part 2: Parametrization of relative humidity- and wavelength-dependent aerosol optical properties

    OpenAIRE

    Schladitz, Alexander; Müller, Thomas; Nordmann, Stephan; Tesche, Matthias; Groß, Silke; Freudenthaler, Volker; Gasteiger, Josef; Wiedensohler, Alfred

    2011-01-01

    An observation-based numerical study of humidity-dependent aerosol optical properties of mixed marine and Saharan mineral dust aerosol is presented. An aerosol model was developed based on measured optical and microphysical properties to describe the marine and Saharan dust aerosol at Cape Verde. A wavelength-dependent optical equivalent imaginary part of the refractive index and a scattering non-sphericity factor for Saharan dust were derived. Simulations of humidity effects on optical prope...

  4. Dragonflies and damselflies (Insecta: Odonata) collected during the Lindberg expedition to the Cape Verde Islands, 1953-54

    OpenAIRE

    Loureiro, Nuno de Santos

    2015-01-01

    In this paper, 47 specimens of dragonflies and damselflies collected by H. Lindberg and his assistant S. Panelius in the Cape Verde Islands in 1953-1954 and identified by K.J. Valle and K.F. Buchholz, are presented. The damselfly Agriocnemis exilis Selys, 1872, collected in Boa Vista Island in February 1954, is added to the list of Odonata known from the archipelago. The collection also includes specimens from another damselfly, Ischnura senegalensis (Rambur, 1842), which was previously recor...

  5. Chronology of the 2014 volcanic eruption on the island of Fogo, Cape Verde

    Science.gov (United States)

    Silva, Sónia; Cardoso, Nadir; Alfama, Vera; Cabral, Jeremias; Semedo, Helio; Pérez, Nemesio M.; Dionis, Samara; Hernández, Pedro A.; Barrancos, José; Melián, Gladys V.; Pereira, José Manuel; Rodríguez, Fátima

    2015-04-01

    . Day, S. J., Heleno da Silva, S. I. N., and Fonseca, J. F. B. D.: A past giant lateral collapse and present-day flank instability of Fogo, Cape Verde Islands, J. Volcanol. Geotherm. Res., 94, 191-218, 1999. Foeken, J., Day, S., and Stuart, F.: Cosmogenic 3He exposure dating of the Quaternary basalts from Fogo, Cape Verdes: Implications for rift zone and magmatic reorganisation, Quaternary Geochron., 4, 37-49, doi:10.1016/j.quageo.2008.07.002, 2009. Ribeiro, O.: A ilha do Fogo e as suas erupções, 12a edição, Memórias, Série Geográfica, J. Inv. Ultramar, 1960. Torres, P.C., Madeira, J., Silva, L.C., Silveira, A.B., Serralheiro, A. & Mota Gomes, A. (1997) - Carta geológica das erupções históricas da ilha do Fogo: revisão e actualização, in "A erupção vulcânica de 1995 na ilha do Fogo, Cabo Verde", Lisboa, 119-132.

  6. Seasonal variation of aliphatic amines in marine sub-micrometer particles at the Cape Verde islands

    Directory of Open Access Journals (Sweden)

    H. Herrmann

    2009-12-01

    Full Text Available Monomethylamine (MA, dimethylamine (DMA and diethylamine (DEA were detected at non-negligible concentrations in sub-micrometer particles at the Cap Verde Atmospheric Observatory (CVAO located on the island of São Vicente in Cape Verde during algal blooms in 2007. The concentrations of these amines in five stage impactor samples ranged from 0–30 pg m−3 for MA, 130–360 pg m−3 for DMA and 5–110 pg m−3 for DEA during the spring bloom in May 2007 and 2–520 pg m−3 for MA, 100–1400 pg m−3 for DMA and 90–760 pg m−3 for DEA during an unexpected winter algal bloom in December 2007. Anomalously high Saharan dust deposition and intensive ocean layer deepening were found at the Atmospheric Observatory and the associated Ocean Observatory during algal bloom periods. The highest amine concentrations in fine particles (impactor stage 2, 0.14–0.42 μm indicate that amines are likely taken up from the gas phase into the acidic sub-micrometer particles. The contribution of amines to the organic carbon (OC content ranged from 0.2–2.5% C in the winter months, indicating the importance of this class of compounds to the carbon cycle in the marine environment. Furthermore, aliphatic amines originating from marine biological sources likely contribute significantly to the nitrogen content in the marine atmosphere. The average contribution of the amines to the detected nitrogen species in sub-micrometer particles can be non-negligible, especially in the winter months (0.1% N–1.5% N in the sum of nitrate, ammonium and amines. This indicates that these smaller aliphatic amines can be important for the carbon and the nitrogen cycles in the remote marine environment.

  7. Susceptibility profile of Aedes aegypti from Santiago Island, Cabo Verde, to insecticides.

    Science.gov (United States)

    Rocha, Hélio Daniel Ribeiro; Paiva, Marcelo Henrique Santos; Silva, Norma Machado; de Araújo, Ana Paula; Camacho, Denise dos Reis da Rosa de Azevedo; Moura, Aires Januário Fernandes da; Gómez, Lara Ferrero; Ayres, Constância Flávia Junqueira; Santos, Maria Alice Varjal de Melo

    2015-12-01

    In 2009, Cabo Verde diagnosed the first dengue cases, with 21,137 cases reported and Aedes aegypti was identified as the vector. Since the outbreak, chemical insecticides and source reduction were used to control the mosquito population. This study aimed to assess the susceptibility of A. aegypti populations from Santiago, Cabo Verde to insecticides and identify the mechanisms of resistance. Samples of A. aegypti eggs were obtained at two different time periods (2012 and 2014), using ovitraps in different locations in Santiago Island to establish the parental population. F1 larvae were exposed to different concentrations of insecticides (Bacillus thuringiensis var israelensis (Bti), diflubenzuron and temephos) to estimate the lethal concentrations (LC90) and calculate the respective rate of resistance (RR90). Semi-field tests using temephos-ABATE(®) were performed to evaluate the persistence of the product. Bottle tests using female mosquitoes were carried out to determine the susceptibility to the adulticides malathion, cypermethrin and deltamethrin. Biochemical and molecular tests were performed to investigate the presence of metabolic resistance mechanisms, associated with the enzymes glutathione S-transferases (GSTs), esterases and mixed-function oxidases (MFO) and to detect mutations or alterations in the sodium channel and acetylcholinesterase genes. A. aegypti mosquitoes from Santiago exhibited resistance to deltamethrin, cypermethrin (mortality<80%) and temephos (RR90=4.4) but susceptibility to malathion (mortality≥98%), Bti and diflubenzuron. The low level of resistance to temephos did not affect the effectiveness of Abate(®). The enzymatic analysis conducted in 2012 revealed slight changes in the activities of GST (25%), MFO (18%), α-esterase (19%) and β-esterase (17%), but no significant changes in 2014. Target site resistance mutations were not detected. Our results suggest that the A. aegypti population from Santiago is resistant to two major

  8. Calculating of radiation doses in rutinary unloads of liquid wastes from Laguna Verde nuclear power plant

    International Nuclear Information System (INIS)

    Utilization of nuclear energy to produce or generate electricity is a growing practice in the world, since it represent an economic and safe option to replace fossil fuels. During operation of nuclear power plants, radioactive materials are produced. A small fraction of these material are released to environment in the form of liquid or gaseous effluents. Estimation of radiation doses causing by effluents release has three purposes. During design phase of a nuclear station it is useful to adapt the wastes treatment systems to acceptable limits. During licensing phase, the regulator organism verifies the design of nuclear station effectuating estimation of doses. Finally, during operation of a nuclear station, before every unload of radioactive effluents, radiation doses should be evaluate in order to fulfill technical specifications, which limit the release of radioactive materials to environment. 1. To perform calculations of individual doses due to liquid radioactive effluents unload in units 1 and 2 of Laguna Verde nuclear power plant (In licensing phase). 2. To perform a parametric study of the effect of unload recirculation over individual dose, since recirculation has two principal effects: thermodynamical effects in nuclear station and radioactivity concentration, the last can affect the fullfilment of dose limits. 3. To perform the calculation of collective doses causes by unloads of liquid effluents within a radius of 80 Kms. of nuclear station caused by unload of liquid radioactive effluents during normal operation of nuclear power plant and does not include doses caused during accident conditions. In Mexico the organism in charge of regulation of peaceful uses of nuclear energy is Comision Nacional de Seguridad Nuclear y Salvaguardias (CNSNS) and for Laguna Verde licensing, the regulations of country who manufactured the reactor was adopted, it is to say United States of America. In Appendix 'C' units used along this work are explained. Unless another

  9. Multi-disciplinary Monitoring of the 2014 Eruption of Fogo Volcano, Cape Verde

    Science.gov (United States)

    Fernandes, R. M. S.; Faria, B. V. E.

    2015-12-01

    The Fogo volcano, located in the Cape Verde Archipelago (offshore Western Africa), is a complete stratovolcano system. It is the most recent expression of the Cape Verde hotspot, that has formed the archipelago. The summit reaches ~2830m above sea level, and raises 1100m above Chã das Caldeiras, an almost flat circular area. The last eruption of Fogo started on November 23, 2014 (~10:00UTC), after 19 years of inactivity. C4G, a distributed research infrastructure created in 2014 in the framework of the Portuguese Roadmap for Strategic Research Infrastructures, collaborated immediately with INMG, the Cape Verdean Meteorological and Geophysical Institut with the goal of complementing the permanent geophysical monitoring network in operation on Fogo island. The INMG permanent network is composed of seven seismographic stations and three tiltmeter stations, with real-time data transmitted. On the basis of increased pre-event activity (which started in October 2014), INMG issued a formal alert of an impending eruption to the Civil Protection Agency, about 24 hours before the onset of the eruption. Although the eruption caused no casualties or personal injuries due to the warnings issued, the lava expelled by the eruption (which last until the end of January) destroyed the two main villages in the caldera (~1000 inhabitants) and covered vast areas of agricultural land, causing very large economic losses and an uncertain future of the local populations. The C4G team installed a network of seven GNSS receivers and nine seismometers, distributed by the entire island. The data collection started on 28th November 2014, and continued until the end of January 2015. The mission also included a new detailed gravimetric survey of the island, the acquisition of geological samples, and the analysis of the air quality during the eruption. We present here a detailed description of the monitoring efforts carried out during the eruption as well as initial results of the analysis of the

  10. Economia verde: por que o otimismo deve ser aliado ao ceticismo da razão

    Directory of Open Access Journals (Sweden)

    Andrei Cechin

    2012-01-01

    Full Text Available A iniciativa da economia verde carrega consigo o otimismo da vontade de que a economia pode e deve ser impulsionada por investimentos em atividades limpas em contraposição à extração de recursos naturais e à indústria poluente. No entanto, existem limites à ênfase que se coloca nos aumentos de eficiência e na substituição entre setores de uma economia. Para ser verde de fato, a redução no impacto ambiental por unidade do PIB deve ser maior do que o aumento do PIB num período. Mesmo que evidências recentes mostrem que alguns países já passaram do pico no uso de materiais e energia, globalmente a extração de recursos naturais e a emissão de CO2 só tem aumentado. Uma provável causa é porque países ricos têm terceirizado as atividades poluentes para países mais pobres. É hora de trazer o ceticismo da razão para o debate e discutir seriamente o decrescimento, não do PIB ou das oportunidades de desenvolvimento humano, mas da extração de recursos e da emissão de carbono globais.The green economy initiative carries with it the optimistic view that the economy can and should be driven by investments in clean activities as opposed to the extraction of natural resources and polluting industries. However there are limits to the emphasis that is often put on efficiency improvements and on the substitution between sectors of an economy. For the economy to be green, the reduction in environmental impact per unit of GDP should be higher than GDP growth over a period. Even though recent evidence shows that some countries aparently passed the peak in the use of materials and energy, global extraction of natural resources and CO2 emissions has increased. A probable cause is that rich countries have outsourced polluting activities to poorer countries. It is time to bring the skepticism of reason to the debate and seriously discuss degrowth, not of GDP or of opportunities for human development, but of the global resource extration

  11. Multivariate analysis in the frequency mastery applied to the Laguna Verde Central; Analisis multivariable en el dominio de la frecuencia aplicado a la Central Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Castillo D, R.; Ortiz V, J. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico); Calleros M, G. [CFE, Central Nucleoelectrica de Laguna Verde, carretera Nautla-Cardel Km. 42.5, Alto Lucero, Veracruz (Mexico)]. e-mail: rcd@nuclear.inin.mx

    2006-07-01

    The noise analysis is an auxiliary tool in the detection of abnormal operation conditions of equipment, instruments or systems that affect to the dynamic behavior of the reactor. The spectral density of normalized power has usually been used (NPSD, by its initials in English), to watch over the behavior of some components of the reactor, for example, the jet pumps, the recirculation pumps, valves of flow control in the recirculation knots, etc. The behavior change is determined by individual analysis of the NPSD of the signals of the components in study. An alternative analysis that can allow to obtain major information on the component under surveillance is the multivariate autoregressive analysis (MAR, by its initials in English), which allows to know the relationship that exists among diverse signals of the reactor systems, in the time domain. In the space of the frequency, the relative contribution of power (RPC for their initials in English) it quantifies the influence of the variables of the systems on a variable of interest. The RPC allows, therefore that for a peak shown in the NPSD of a variable, it can be determine the influence from other variables to that frequency of interest. This facilitates, in principle, the pursuit of the important physical parameters during an event, and to study their interrelation. In this work, by way of example of the application of the RPC, two events happened in the Laguna Verde Central are analyzed: the rods blockade alarms by high scale in the monitors of average power, in which it was presents a power peak of 12% of width peak to peak, and the power oscillations event. The main obtained result of the analysis of the control rods blockade alarm event was that it was detected that the power peak observed in the signals of the average power monitors was caused by the movement of the valve of flow control of recirculation of the knot B. In the other oscillation event the results its show the mechanism of the oscillation of

  12. Genetic structure of populations of Drosophila melanogaster natives from Laguna Verde, Veracruz; Estructura genetica de poblaciones de Drosophila melanogaster originarias de Laguna Verde, Veracruz

    Energy Technology Data Exchange (ETDEWEB)

    Salceda, V.M. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)]. e-mail: vmss@nuclear.inin.mx

    2005-07-01

    The genetic variability hidden present in natural populations of Drosophila melanogaster, it has been broadly analyzed, and it is a tool that allows to detect differences among the different populations of this species, so much of natural nature as experimental. In this occasion we use it to see if differences exist in two neighboring populations inside the Laguna Verde nuclear power plant, Veracruz, and this way to suggest, of having differences in the mount of the relative frequencies of lethal genes, semi lethals and normal, be due to the radioactive emanations product of the reactors operation of the plant. Its were took samples of flies in both towns during three successive seasons and they were transported to the laboratory of the ININ where they were carried out the tests to determine the frequency of the different types of genes. This was made by means of the denominated technique C y L / Pm that allows by means of a cross series with a stump marker to obtain, in the third generation, in isolated form the different types of genes and this way to calculate their relative frequencies. The study understands the analysis of 299 chromosomes extracted from the populations, of those that 95 correspond at the control population and 204 to the experimental one. As a result of the analysis we find that 30.52 percent of the genes of the population witness contains detrimental genes (sum of the lethal plus the semi lethal genes) as long as in the experimental population this value corresponds to 23.03 percent. In accordance with this information was not significant difference among the studied populations. A similar analysis, but now comparing the seasons, (summer against winter), it showed significant difference to 5% with regard to the lethal genes frequency only in the population witness. These results indicate the absence of damage, however it is necessary to consider that this can be due to that indeed there is not him or that the investigation protocol is not

  13. Análisis del control geológico en la torrencialidad del arroyo Las Lajas, Córdoba, a través de la modelización hidrológica Analysis of the geological control on the Arroyo Las Lajas, Cordoba, flashiness through an hydrological modeling

    Directory of Open Access Journals (Sweden)

    Nelso C. Doffo

    2010-08-01

    Full Text Available Se analiza la incidencia de factores litológicos, estructurales y bióticos en la respuesta hidrológica (torrencialidad de una cuenca hídrica serrana aplicando el modelo matemático ARHymo. La cuenca alta del arroyo Las Lajas se encuentra en las sierras de Comechingones, entre 1.200 y 750 m s.n.m., con una superficie de 41 km2 y una red de drenaje de orden de Horton 6. La morfología de la cuenca está fuertemente controlada por la traza de la falla Las Lajas, una estructura de actividad reciente que separa un sustrato granítico de otro metamórfico. Para el modelado, la cuenca alta fue subdividida en 42 subcuencas. Para cada una de ellas se obtuvieron valores de curva número (CN. La torrencialidad de cada subcuenca fue estimada en base a los tiempos al pico (Tp y a la distribución temporal de la onda de creciente reflejada en los hidrogramas. Se confrontaron las formas de los hidrogramas de subcuencas representativas y la distribución de las frecuencias de los tiempos al pico, con las características geológicas de la cuenca. Las subcuencas desarrolladas en metamorfitas con fuerte control estructural mostraron mayor torrencialidad que las ubicadas en el sustrato granítico.The impact of lithological, structural and biotic factors in the hydrological response of a mountain drainage basin is analyzed using the mathematical model ARHymo. The upstream reach of the Las Lajas creek is located in the Comechingones Ranges, between 1,200 to 750 m a.s.l.; it has an area of 41 km2 and a drainage network of Horton order 6. The morphology of the basin is strongly controlled by the Las Lajas fault, a recently active structure that separates granitic from metamorphic substrates. The basin was subdivided into 42 subbasins and curve numbers were computed for each subbasin. The flashiness of the flood wave was estimated from time-to-peak data and from the shapes of hydrographs. Comparison of the shapes of the hydrographs of representative subbasins and

  14. Evaluación de abonos verdes en el sistema de producción maíz-leguminosas

    Directory of Open Access Journals (Sweden)

    Prager M. Martin

    1989-06-01

    Full Text Available En la primera parte del ensayo, se estudió el comportamiento del peso de nódulos, peso fresco y peso seco de tres leguminosas (Crotalaria, Canavalia y Guandul a utilizar como abonos verdes y su efecto sobre sistemas de producción maíz-leguminosas (maíz-caupí, maíz-soya, maíz-frijol. Las variables consideradas (rendimiento, rendimiento equivalente de maíz, ingreso neto y tasa de retorno marginal mostraron el efecto positivo de esta práctica sobre esta forma de producción obteniéndose mejor respuesta de el sistema maíz-caupí. De los abonos verdes la crotalaria presentó el mejor efecto sobre los sistemas de producción. En la segunda parte del trabajo, se utilizó el sistema de producción de mejor comportamiento introduciendo al factor abono verde algunas modalidades de tratamiento, entre ellas efecto residual, adición de una segunda incorporación de los tres abonos verdes y efecto residual más la adición de abono químico. La consideración de las mismas variables usadas en la primera parte mostro mejores valores por la segunda incorporación de abono verde y la adición de abono químico en su orden, el efecto residual de los abonos permite obtener rendimientos superiores a los alcanzados por el testigo.This research was divided in two parts. The first studies the behavior of three legumes (Crotalaria, Canavalia and Cajanus as green manure, measuring weight nodules, green weight matter and dry weight matter of them, so measured the effect on three production systems: Maize- cowpea, Maize- soybean and Maize-bean. The indicators (yield, equivalent maize yields, net income and marginal return rate showed positive effect of green manure on this production systems too maize-cowpea system showed the best yields; Crotalaria was ,the best green manure. In second experimental stage maize- cowpea system was evaluated, using the same indicators and introducing new treatments related to green manure: its residual effects, addicional

  15. Generation of the ECP database (ECP02.DAT) at the beginning of the cycle 1 of the Unit 1 of Laguna Verde; Generacion de la base ECP (ECP02.DAT) al inicio del ciclo 1 de la Unidad 1 de Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Perusquia C, R. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

    1992-10-15

    In order to carrying out a comparison among the results provided for the Program of Estimate of the ECP Critical Position and the Shutdown/Startup produced in the Cycle 1 of the Unit 1 of Laguna Verde, it was generated the base of the ECP program, following the outlines settled down in the Procedure 'Generation of ECP Database for Laguna Verde' (IT.SN/DFR 074). Next the data sheets filled when being generated the ECP02.DAT database at the beginning of the cycle are provided. In the IT.SN/DFR 079 report 'Adjustment and Preliminary Evaluation of the Predictions of Criticity of the ECP Program with Reported Data of Cycle 1 of the Unit 1 of Laguna Verde, the results of the comparison among the estimates of the ECP program using the ECP02.DAT with the real data of the Cycle 1 of the Unit 1 of Laguna Verde are presented. (Author)

  16. Analysis of the Power oscillations event in Laguna Verde Nuclear Power Plant. Preliminary Report

    International Nuclear Information System (INIS)

    The event occurred at Unit 1 of Laguna Verde Nuclear Power Plant in January 24, 1995, is analyzed using the Ramona 3 B code. During this event, Unit 1 suffered power oscillation when operating previous to the transfer at high speed recirculating pumps. This phenomenon was timely detected by reactor operator who put the reactor in shut-down doing a manual Scram. Oscillations reached a maximum extent of 10.5% of nominal power from peak to peak with a frequency of 0.5 Hz. Preliminary evaluations show that the event did not endangered the fuel integrity. The results of simulating the reactor core with Ramona 3 B code show that this code is capable to moderate reactor oscillations. Nevertheless it will be necessary to perform a more detailed simulation of the event in order to prove that the code can predict the beginning of oscillations. It will be need an additional analysis which permit the identification of factors that influence the reactor stability in order to express recommendations and in this way avoid the recurrence of this kind of events. (Author)

  17. Nutritional quality of dry food for adult dogs, commercialized in Rio Verde-GO.

    Directory of Open Access Journals (Sweden)

    Maria Cristina de Oliveira

    2009-06-01

    Full Text Available We evaluated the nutritional quality of dry food for adult dogs, checking whether the label information was in agreement with the law and with the analyses, and also whether the suggested intake reached the nutritional requirements of adult dogs. Eighteen samples of commercial feed, eight of the economical type and 10 of the premium type, were purchased and analyzed. Regarding the product descriptions, only 12.5 and 10% (moisture, 87.5 and 70% (CP, 25 and 20% (AHEE, 0 and 0% (MM, 12.5 and 40% (Ca and 0 and 20% (P of the economical and premium foods, respectively, were in conformity according to the label. Regarding the guarantee levels, most of the foods showed levels which were under the limits. The suggested daily average intake of premium food was 13.07% lower, CP and P intakes were 10 and 16.97% higher, and Ca and EM intakes were 16.27 and 11.15% lower compared to the suggested economical food intake. It was concluded that the dry food for adult dogs, sold in Rio Verde, has a good quality because it reaches the required limits, but there are deficiencies in the label information related to the guarantee levels, and there are excesses in the daily energy supply with the use of economical food.

  18. Quality of water of a dam located in an agricultural area (Campo Verde, MT, Brazil

    Directory of Open Access Journals (Sweden)

    Ricardo Santos Silva Amorim

    2012-08-01

    Full Text Available In this study spatial and temporal variations in limnological characteristics of a dam located in one of the headwaters of the São Lourenço River (Campo Verde, MT were evaluated. The surrounding area is used for soybeans cultivation, corn, cotton, and pasture. We examined biotic (heterotrophic bacteria and chlorophyll a and abiotic factors (precipitation, air and water temperature, electrical conductivity, dissolved oxygen, pH, turbidity, total phosphorus, nitrite, nitrate, and ammonia nitrogen at three sampling sites along the longitudinal axis of the water body, and at three depths (at the surface, the Secchi depth, and at the sediment-water interface. Samples were taken bimonthly during 2010. Spearman correlation analysis was used to examine the relationship between biotic and abiotic variables, and then principal components and cluster analyses were used to study the relationship between these factors and the variability observed among the various sampling sites, dam depths, and periods of observation. The analyses showed a strong correlation between factors such as rainfall, heterotrophic bacteria, conductivity, turbidity, and phosphorus, indicating the influence of seasonality in cultivated areas. It was observed that the variations between the sampling sites were more significant (p < 0.01 than in the water column for most of the variables, probably due to the particular characteristics of each sample point and its shallow water column.

  19. Episodic swell growth inferred from variable uplift of the Cape Verde hotspot islands

    Science.gov (United States)

    Ramalho, R.; Helffrich, G.; Cosca, M.; Vance, D.; Hoffmann, D.; Schmidt, D.N.

    2010-01-01

    On the Beagle voyage, Charles Darwin first noted the creation and subsidence of ocean islands, establishing in geology's infancy that island freeboard changes with time. Hotspot ocean islands have an obvious mechanism for freeboard change through the growth of the bathymetric anomaly, or swell, on which the islands rest. Models for swell development indicate that flexural, thermal or dynamic pressure contributions, as well as spreading of melt residue from the hotspot, can all contribute to island uplift. Here we test various models for swell development using the uplift histories for the islands of the Cape Verde hotspot, derived from isotopic dating of marine terraces and subaerial to submarine lava-flow morphologies. The island uplift histories, in conjunction with inter-island spacing, uplift rate and timing differences, rule out flexural, thermal or dynamic pressure contributions. We also find that uplift cannot be reconciled with models that advocate the spreading of melt residue in swell development unless swell growth is episodic. Instead, we infer from the uplift histories that two processes have acted to raise the islands during the past 6 Myr. During an initial phase, mantle processes acted to build the swell. Subsequently, magmatic intrusions at the island edifice caused 350 m of local uplift at the scale of individual islands. Finally, swell-wide uplift contributed a further 100 m of surface rise.

  20. Hydrogeological investigation in Santiago Island (Cabo Verde) using magnetotellurics and VLF methods

    Science.gov (United States)

    Monteiro Santos, Fernando A.; Almeida, Eugénio P.; Gomes, Mota; Pina, António

    2006-08-01

    A geoelectromagnetic research was carried out in the Santa Cruz region (Santiago Island, Cabo Verde) during June 2004. The survey comprised MT soundings and VLF profiles. The main purpose of the MT profile, carried out across three important valleys associated with freshwater aquifers, was to study the tectonic structures correlated to seawater infiltration. The VLF method was used inside of the valleys for investigating shallow structures related to the aquifer contamination by seawater. Numerical modelling shows that the ocean effect is not important for MT data collected at periods shorter than 1 s. The MT data were inverted using a two-dimensional approach, to obtain the sub-superficial electrical conductivity distribution. The VLF data were processed applying the Karous-Hjelt filters to obtain the equivalent current distribution and inverted using 2-D approach. The results obtained in one of the most important valleys show anomalous current concentration/low resistivity (<20 Ω m) areas at depths greater than 40 m that may correspond to an increase in seawater content. The MT data modelling show that the deep zones beneath the valley are strongly fractured representing good pathways for seawater circulation. The depth of the conductive zones increases from south to north, suggesting a northward decreasing of the seawater infiltration effect. This observation correlates very well with in situ geochemical observations.

  1. INDICADORES BIOFÍSICOS DE DESERTIFICAÇÃO, CABO VERDE/ÁFRICA

    Directory of Open Access Journals (Sweden)

    Vládia Pinto Vidal de Oliveira

    2011-01-01

    Full Text Available El trabajo discute el diagnostico geoambiental de la Isla de Santiago de Cabo Verde. Tiene como objetivo evaluar la dinámica ambiental y el estado de evolución de los sistemas naturales, estableciendo las categorías de los medios ecodinámicos. Cada categoría del medio está asociada al comportamiento y a la vulnerabilidad de las condiciones geoambientales en función de los procesos de degradación. Sobre el punto de vista teórico- -metodológico, se adoptaron criterios integrativos capaces de atender a las relaciones de interdependencia entre componentes físico-bióticos y socioeconómicos. Se seleccionaron siete (7 indicadores biofísicos: geología, geomorfología, cobertura vegetal (estratifi cación, cobertura vegetal (porcentual de ocupación, suelos (espesura y suelos (erosión. Resultaron diez (10 sistemas ambientales, que, en el análisis de los Indicadores Biofísicos de Desertifi cación (IBFD, apuntaron a la ocurrencia de dos grupos distintos: índice muy alto de desertifi cación y de muy bajo a bajo índice biofísico de desertifi cación.

  2. Estimation of seismic return periods in the Laguna Verde nuclear plant

    International Nuclear Information System (INIS)

    The study of seismic risk in the area of the Laguna Verde Nucleo electric plant (PNLV) and its surroundings, one carries out estimating the different return periods and the occurrence probability in different intervals of time (5, 75, 100, 125, 150 years starting from the distribution of first type of Gumbel (G1) of extreme values (Burton, 1986), the value that was used to evaluate the useful life of the PNLV was of 50 years, the other periods will be occupy to evaluate 'temporal' nuclear cemeteries, that is to say for diminish the radioactive activity of the fuel assemblies already burned in the reactor pool or in a near place to the place. The seismic data that were used for the analysis were of the seismic catalog that it was elaborated from (1920-1982), around the place whose seismic half magnitude was of 5 grades Richter and a depth 65 km, these earthquakes are classified as shallow earthquakes, which are located in the continental plaque of North-America, these they are induced by the efforts of push of the plaque of Cocos, existing 36% of intermediate and 2 of deep earthquakes. (Author)

  3. Ocean variability around Cape Verde Archipelago from near real time satellite altimetry and SST images

    Science.gov (United States)

    Lázaro, C.; Fernandes, M. J.

    2003-04-01

    In this work, the synergy of data acquired by the radar altimeter (RA) and the infrared radiometer (ATSR-2/IRR) aboard the ERS-2 satellite, presently available in near real time, is exploited. The aim is to extract valid oceanographic information for the characterisation of ocean circulation around the Cape Verde Archipelago (North Atlantic Ocean) and its seasonal variability. For the data acquisition period (June 2001 to May 2002, ERS-2 cycles 64 to 73), synoptic maps representing sea surface temperature (SST) and absolute dynamic topography (ADT) values for each cycle were created. The methodology adopted for the near real time data processing is described. As the accuracy of the orbit and geophysical corrections is a fundamental issue in the evaluation of altimetric data, the near real time products were compared with the OPR products, which have several months of latency. Based upon the ADT values, intensity and direction of surface geostrophic currents were calculated. The SST variability was investigated and compared with the absolute dynamic topography variability. The seasonal cycle of the oceanographic characteristics, as extracted from the combined analysis of the two variables, is perfectly visible along the year of study.

  4. Vivian Cubelo Núñez, enfermera de eterno verde olivo

    Directory of Open Access Journals (Sweden)

    Kenia María Borrego Rodríguez

    2014-08-01

    Full Text Available Mantener los logros alcanzados por la salud pública cubana requiere de profesionales competentes y con sólidos valores que manifiesten en su actuar cotidiano. En este trabajo se promueve la formación de valores humanos, patrióticos y profesionales a través de la historia de vida de una revolucionaria tunera Vivian del Rosario Cubelo Núñez, que devino en enfermera competente, con sólidos valores profesionales, que deben caracterizar a los enfermeros en la actualidad cubana; miembro de la brigada femenina del movimiento 26 de julio en Las Tunas, donde desarrolló diversas acciones en la clandestinidad. Al triunfo de la Revolución se graduó como Licenciada en Enfermería, desempeñando diferentes tareas en la docencia, la asistencia médica y las investigaciones, mostrando su humanismo, laboriosidad y responsabilidad. Actualmente, jubilada de las labores asistenciales, pero sigue vistiendo de verde olivo, luchando por la liberación de los cinco héroes injustamente prisioneros en el imperio. Ha trasmitido valores éticos y morales a jóvenes, especialmente a su nieto, activista del Comité de Solidaridad por la liberación de estos héroes cubanos

  5. Soil erosion vulnerability in the verde river basin, southern minas gerais

    Directory of Open Access Journals (Sweden)

    Vinícius Augusto de Oliveira

    2014-06-01

    Full Text Available Soil erosion is one of the most significant environmental degradation processes. Mapping and assessment of soil erosion vulnerability is an important tool for planning and management of the natural resources. The objective of the present study was to apply the Revised Universal Soil Loss Equation (RUSLE using GIS tools to the Verde River Basin (VRB, southern Minas Gerais, in order to assess soil erosion vulnerability. A annual rainfall erosivity map was derived from the geographical model adjusted for Southeastern Brazil, calculating an annual value for each pixel. The maps of soil erodibility (K, topographic factor (LS, and use and management of soils (C were developed from soils and their uses map and the digital elevation model (DEM developed for the basin. In a GIS environment, the layers of the factors were combined to create the soil erosion vulnerability map according to RUSLE. The results showed that, in general, the soils of the VRB present a very high vulnerability to water erosion, with 58.68% of soil losses classified as "High" and "Extremely High" classes. In the headwater region of VRB, the predominant classes were "Very High" and "Extremely High" where there is predominance of Cambisols associated with extensive pastures. Furthermore, the integration of RUSLE/GIS showed an efficient tool for spatial characterization of soil erosion vulnerability in this important basin of the Minas Gerais state.

  6. Report on the Fourth Reactor Refueling. Laguna Verde Nuclear Central. Unit 1. April-May 1995

    International Nuclear Information System (INIS)

    The fourth refueling of the Unit 1 of Laguna Verde Nuclear Central was executed in the period of April 17 to May 31 of 1995 with the participation of a task group of 358 persons, included technicians and radiation protection officials and auxiliaries.The radiation monitoring and radiological surveillance to the workers was present length ways the refueling process and always attached to the ALARA criteria. The check points for radiation levels were set at: primary container or dry well, reloading floor, decontamination room (level 10.5), turbine building and radioactive waste building. To take advantage of the refueling process, rooms 203 and 213 of the turbine buildings were subject to inspection and maintenance work in valves, heaters and drains of heaters. Management aspects as personnel selection and training, costs, and countable are also presented in this report. Owing to the high cost of man-hour of the members of the ININ staff, its participation in the refueling process was in smaller number than years before. (Author)

  7. PAISAGEM URBANA E ÁREAS VERDES: CONTEXTO DOS PARQUES URBANOS DE GOIÂNIA

    Directory of Open Access Journals (Sweden)

    Clarinda Aparecida da Silva

    2012-12-01

    Full Text Available Este artigo tem como objetivo discutir a evolução do conceito de paisagem, a partir da análise da apropriação dessa categoria nos dias de hoje. As reflexões aqui apresentadas terão como objeto de estudo as áreas verdes, que têm sido foco da mídia turística e da administração pública municipal, que as utilizam para vender a imagem de qualidade de vida na capital. Além disso, buscam, por meio de intensa divulgação, atrair investimentos do mercado nacional e internacional para desenvolver atividades econômicas ligadas ao turismo e à construção civil. Essas iniciativas transformam a natureza na cidade – que deveria estar ligada à qualidade ambiental, em virtude de amenizar os impactos advindos da crescente e desordenada urbanização – em “fetiche” e objeto de fascinação dos apreciadores da paisagem dos parques urbanos.

  8. Multiparameter monitoring of Fogo Island, Cape Verde, for volcanic risk mitigation

    Science.gov (United States)

    Fonseca, Joao F. B. D.; Faria, Bruno V. E.; Lima, Nuno P.; Heleno, Sandra I. N.; Lazaro, Clara; d'Oreye, Nicolas F.; Ferreira, Ana M. G.; Barros, Inocencio J. M.; Santos, Paula; Bandomo, Zuleyka; Day, Simon J.; Osorio, Jose P.; Baio, Miguel; Matos, Joao L. G.

    2003-07-01

    Fogo Island in the Cape Verde Archipelago (North Atlantic) is a stratovolcano of nearly conical shape that rises 2829 m above sea level and ˜6000 m above the surrounding seafloor. With a population of 40 000, the island has known intense historical volcanic activity since AD 1500, with an average interval between eruptions of the order of 20 years. Twentieth-century rates were more subdued, with only two flank eruptions in 1951 and 1995. Following the 1995 eruption, increased awareness of the volcanic hazard affecting the population of the island led to the deployment of the permanent VIGIL Network. Seismographic stations (both broadband and short-period), tiltmeters and a CO 2 sensor where installed in Fogo, together with a telemetry infrastructure to allow remote real-time monitoring. A broadband seismographic station was installed in neighbour Brava Island. The operation of the network was complemented by the introduction of routine geodetic and microgravity surveying and the operation of an automatic meteorological station. In this paper, we describe the methodology adopted to monitor the volcanic activity, combining real-time data analysis (volcanotectonic and volcanic earthquakes, volcanic tremor and tilt) with repeated surveying at intervals of several months (GPS, microgravity). Examples of data from the first years of operation are presented. In particular, the data pertaining to a period of anomalous activity in September-October 2000 are discussed, in the context of the risk mitigation strategy currently being developed.

  9. Questions to the reactors power upgrade of the Nuclear Power Plant of Laguna Verde

    International Nuclear Information System (INIS)

    The two reactors of the Nuclear Power Plant of Laguna Verde (NPP-L V) were subjected to power upgrade labors with the purpose of achieving 20% upgrade on the original power; these labors concluded in August 24, 2010 for the Reactor 1 and in January 16, 2011 for the Reactor 2, however in January of 2014, the NNP-L V has not received by part of the Comision Nacional de Seguridad Nuclear y Salvaguardias (CNSNS) the new Operation License to be able to work with the new power, because it does not fulfill all the necessary requirements of safety. In this work is presented and analyzed the information obtained in this respect, with data provided by the Instituto Federal de Acceso a la Informacion Publica y Proteccion de Datos (IFAI) and the Comision Federal de Electricidad (CFE) in Mexico, as well as the opinion of some workers of the NPP-L V. The Governing Board of the CFE announcement that will give special continuation to the behavior on the operation and reliability of the NPP-L V, because the frequency of not announced interruptions was increased 7 times more in the last three years. (Author)

  10. Geological-Geophysical integration in the Laguna Verde Nuclear Power Plant site and its surroundings

    International Nuclear Information System (INIS)

    As part of comprehensive, nationwide evaluation of the Seismic risk at the Nuclear Power Plant site of the Laguna Verde (LVNP) the first of the acceleration ground motion maps, covering for a circular distance value 200 Km around, has been prepared. The maps were created the acceleration grounds motion expected over intervals 1, 25, 50, 100 and 200 years by using Gumbel's (I, III) theory of extreme value statistics of the seismic data. It's reaching operating basis earthquake (OBE) value 0.1 g. in 100 years forecasting and 200 years this value is 0.114 G is more than OBE, but minor than safety shutdown earthquake (SSE). The acceleration ground motion risk maps are compared to regional geology, seismicity (1920-1982) and gravity data. Good correlations are found between the accelerations ground motion risk and seismicity. A spatial correlation observed between gravity and structure with acceleration ground motion rise is considered a secondary the structural effect. Locations of the currently operating NPP correspond to low seismicity risk area. Based on these comparations, it is concluded that the method provides geologically reasonable results which are usable in a nationwide NPP assessment program (Author)

  11. Economic analysis of extended cycles in the Laguna Verde nuclear power plant

    International Nuclear Information System (INIS)

    The present work presents a preliminary analysis of economic type of extended cycles of operation of the Unit One in the Laguna Verde nuclear power plant. It is analysed an equilibrium cycle of 18 months firstly, with base to the Plan of Use of Energy of the Federal Commission of Electricity, being evaluated the cost of the energy until the end of the useful life of the plant. Later on an alternative recharge scenario is presented with base to an equilibrium cycle of 24 months, implemented to the beginning of the cycle 11, without considering transition cycles. It is added in both cycles the cost of the substitution energy, considering the unitary cost of the fuel of a dual thermoelectric power station of 350 M We and evaluating in each operation cycle, in both scenarios, the value of the substitution energy. The results show that a reduction of the days of recharge in the cycle of 24 months could make this option but favorable economically. The duration of the period of recharge rebounds in considerable grade in the cost of energy generation for concept of fuel. (Author)

  12. New Archaeological Evidence for an Early Human Presence at Monte Verde, Chile

    Science.gov (United States)

    Dillehay, Tom D.; Ocampo, Carlos; Saavedra, José; Sawakuchi, Andre Oliveira; Vega, Rodrigo M.; Pino, Mario; Collins, Michael B.; Scott Cummings, Linda; Arregui, Iván; Villagran, Ximena S.; Hartmann, Gelvam A.; Mella, Mauricio; González, Andrea; Dix, George

    2015-01-01

    Questions surrounding the chronology, place, and character of the initial human colonization of the Americas are a long-standing focus of debate. Interdisciplinary debate continues over the timing of entry, the rapidity and direction of dispersion, the variety of human responses to diverse habitats, the criteria for evaluating the validity of early sites, and the differences and similarities between colonization in North and South America. Despite recent advances in our understanding of these issues, archaeology still faces challenges in defining interdisciplinary research problems, assessing the reliability of the data, and applying new interpretative models. As the debates and challenges continue, new studies take place and previous research reexamined. Here we discuss recent exploratory excavation at and interdisciplinary data from the Monte Verde area in Chile to further our understanding of the first peopling of the Americas. New evidence of stone artifacts, faunal remains, and burned areas suggests discrete horizons of ephemeral human activity in a sandur plain setting radiocarbon and luminescence dated between at least ~18,500 and 14,500 cal BP. Based on multiple lines of evidence, including sedimentary proxies and artifact analysis, we present the probable anthropogenic origins and wider implications of this evidence. In a non-glacial cold climate environment of the south-central Andes, which is challenging for human occupation and for the preservation of hunter-gatherer sites, these horizons provide insight into an earlier context of late Pleistocene human behavior in northern Patagonia. PMID:26580202

  13. Influências da Preocupação Ambiental e do Ceticismo frente à Propaganda no Consumo de Produtos Verdes

    Directory of Open Access Journals (Sweden)

    Dirceu da Silva

    2015-12-01

    Full Text Available Com o objetivo analisar a influência do ceticismo e da preocupação ambiental na percepção do indivíduo para a intenção de compra e compra declarada de produtos verdes no varejo, foi realizado um survey com 1233 consumidores para observar este efeito na relação entre intenção e compra declarada de produtos verdes e entender a disposição do consumidor em transformar sua preocupação ambiental e sua confiança no apelo verde do produto em prática. Como resultado, foi observado que o consumidor leva mais em consideração a sua rotina de compra e a sua experiência passada do que a preocupação ambiental e a influência de propagandas com apelo verde. Sendo assim, o consumo de produtos verdes no varejo precisa de mecanismos voltados para a mudança de habito e quebra de paradigmas (consumidor e varejista.

  14. Modelo de cálculo de áreas verdes en planificación urbana desde la densidad habitacional

    Directory of Open Access Journals (Sweden)

    Francisco Bascuñán Walker

    2015-03-01

    Full Text Available El objetivo del trabajo presentado fue reformular la relación de área construida y área verde Chilena según los estándares internacionales Europeos. Se estudio la mecánica actual de determinación de superficie de área verde en Chile y se comparó con los estándares españoles, elaborando una nueva formula que relaciona directamente la densidad habitacional con la superficie de área verde requerida. El estudio mostró que los resultados de superficies de área verde son de tal envergadura que requieren asociarse a parques comunales e intercomunales. Basados en los resultados del estudio se concluye que para cumplir con las superficies requeridas según la densidad habitacional los loteos nuevos deben contemplar su participación en proyectos de parques urbanos o comunales para garantizar el derecho de áreas verdes de los nuevos habitantes.

  15. Internal event analysis for Laguna Verde Unit 1 Nuclear Power Plant. Accident sequence quantification and results; Analisis de eventos internos para la Unidad 1 de la Central Nucleoelectrica de Laguna Verde. Cuantificacion de secuencias de accidente y resultados

    Energy Technology Data Exchange (ETDEWEB)

    Huerta B, A.; Aguilar T, O.; Nunez C, A.; Lopez M, R. [Comision Nacional de Seguridad Nuclear y Salvaguardias, 03000 Mexico D.F. (Mexico)

    1994-07-01

    The Level 1 results of Laguna Verde Nuclear Power Plant PRA are presented in the {sup I}nternal Event Analysis for Laguna Verde Unit 1 Nuclear Power Plant, CNSNS-TR 004, in five volumes. The reports are organized as follows: CNSNS-TR 004 Volume 1: Introduction and Methodology. CNSNS-TR4 Volume 2: Initiating Event and Accident Sequences. CNSNS-TR 004 Volume 3: System Analysis. CNSNS-TR 004 Volume 4: Accident Sequence Quantification and Results. CNSNS-TR 005 Volume 5: Appendices A, B and C. This volume presents the development of the dependent failure analysis, the treatment of the support system dependencies, the identification of the shared-components dependencies, and the treatment of the common cause failure. It is also presented the identification of the main human actions considered along with the possible recovery actions included. The development of the data base and the assumptions and limitations in the data base are also described in this volume. The accident sequences quantification process and the resolution of the core vulnerable sequences are presented. In this volume, the source and treatment of uncertainties associated with failure rates, component unavailabilities, initiating event frequencies, and human error probabilities are also presented. Finally, the main results and conclusions for the Internal Event Analysis for Laguna Verde Nuclear Power Plant are presented. The total core damage frequency calculated is 9.03x 10-5 per year for internal events. The most dominant accident sequences found are the transients involving the loss of offsite power, the station blackout accidents, and the anticipated transients without SCRAM (ATWS). (Author)

  16. Strategic planning 2007-2011, an opportunity for quality, competitiveness and excellence of the Laguna Verde Central; Planeacion estrategica 2007-2011, una oportunidad para la calidad, competitividad y excelencia de la Central Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Rivera C, A. [CFE, Central Laguna Verde, Kilometro 42.5 Cardel Nautla, Veracruz (Mexico)]. e-mail: arr99999@cfe.gob.mx

    2007-07-01

    The reason is to give to know to the nuclear community in Mexico the good results that it located in the 2006 to the Laguna Verde Nucleo electric Central in the classification of the World Association of Nuclear Operators (WANO) like one of the best in the worldwide scale, and their Strategic Plan 2007-2011 like an opportunity to continue improving the Quality, the Competitiveness and the Excellency in their Generating Units. It stands out that the fuel reloads are carried out in systemic form in less than 30 days, and also other achievements like it is the certificate granted by PROFEPA of Clean Industry, the renovation of the Certifications of the ISO-9001 and the ISO-14001, as well as the accredit of the Laboratories, and they will give data of the project of the increment of power that their power rose in 15%. For those results in the Strategic Planning 2007-2011 are pointed out that the Laguna Verde Central is a highly viable option in Mexico, when continuing with reloads that will allow a capacity factor up of 90%, and the other concepts that will give the obtaining of the qualification level 1 of WANO in this strategic period. Finally I will conclude with the good news for the Nuclear Industry in Mexico that published the Reforma newspaper at November 01, 2006: 'To the president of Mexico, Felipe Calderon, interests him to impel during his command the alternating energy sources to the hydrocarbons, known it is that the hydrocarbons (petroleum, coal or natural gas) they are finite, while the appetite of the world for the energy is infinite. As you they know, Mexico possesses a nuclear plant that generates energy starting from enriched uranium: the famous Laguna Verde Thermonuclear Central. He declared that Mexico can and it should advance for the one on the way to the energy generation for the nuclear road.' (Author)0.

  17. Introduction of fuel GE14 in the nuclear power plant of Laguna Verde for the extended increase of power; Introduccion del combustible GE14 en la central nuclear Laguna Verde para el aumento de potencia extendido

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez M, N.; Vargas A, A. F.; Cardenas J, J. B.; Contreras C, P. [CFE, Central Nuclear Laguna Verde, Subgerencia de Ingenieria, Carretera Veracruz-Medellin Km. 7.5 (Mexico)]. e-mail: natividad.hernandez@cfe.gob.mx

    2008-07-01

    The project of extended increase of power responds to a necessity of electrical energy in the country, increasing the thermal exit of the reactors of the nuclear power plant of Laguna Verde of 2027 MWt to 2317 MWt. In order to support this transition, changes will make in the configuration of the reactor core and in the operation strategies of the cycle, also they will take initiatives to optimize the economy in fuel cycle. At present in both reactors of the nuclear plant of Laguna Verde fuel GE12 is used. The fuel GE14 presents displays with respect to the GE12, some improvements in the mechanical design and consequently in its performance generally. Between these improvements we can mention: 1. Spacers of high performance. 2. Shielding with barrier. 3. Filter for sweepings {sup d}ebris{sup a}nd 4. Fuel rods of minor partial length. The management of nuclear power plants has decided to introduce the use of fuel GE14 in Laguna Verde in the reload 14 for Unit 1 and of the reload 10 for Unit 2. The process of new introduction fuel GE14 consists of two stages, first consists on subjecting the one new design of fuel to the regulator organism in the USA: Nuclear Regulatory Commission, in Mexico the design must be analyzed and authorized by the National Commission of Nuclear Safety and Safeguards, for its approval of generic form, by means of the demonstration of the fulfillment with the amendment 22 of GESTAR II, the second stage includes the specific analyses of plant to justify the use of the new fuel design in a reload core. The nuclear plant of Laguna Verde would use some of the results of the security analyses that have been realized for the project of extended increase of power with fuel GE14, to document the specific analyses of plant with the new fuel design. The result of the analyses indicates that the reload lots are increased of 116-120 assemblies in present conditions (2027 MWt) to 140-148 assemblies in conditions of extended increase of power (2317 MWt

  18. Endicamientos naturales en las nacientes del Arroyo Lileo (Provincia del Neuquén, Argentina Natural dams in the headwater of the Lileo valley (Neuquén province, Argentina

    Directory of Open Access Journals (Sweden)

    Ivanna M Penna

    2012-09-01

    Full Text Available En este trabajo analizamos tres endicamientos naturales por depositación de movimientos en masa que tuvieron lugar en las nacientes del arroyo Lileo (Cordillera de los Andes, norte neuquino, dos de ellos ocurrieron en los últimos 50 años. El primero ocurrió en el Holoceno, por desprendimiento de 0,14 km³ de volcanitas en la ladera oeste del valle, cerca de las nacientes del arroyo La Tregua. Este bloqueo originó una laguna permanente de 0,44 km². En los años '60, la depositación de una avalancha de detritos originada en la ladera opuesta del valle, frente a la escarpa de la avalancha de rocas, ocluyó la brecha labrada por erosión fluvial en el depósito de avalancha de rocas, generando un segundo cuerpo lacustre de tipo efímero. El último endicamiento, que tuvo lugar entre >1962-In this paper we analyze three natural dams that formed by deposits of mass movement that took place in the headwater of Lileo creek (Cordillera de los Andes, northern Neuquén, Argentina, two of them occurred in the last 50 years. The first one happened in the Holocene, by detachment of 0.14 km³ of volcanites in the western side of the valley, near the headwater of the La Tregua creek. This blockade originated a permanent water body of 0.44 km². The deposition in the 60's of a debris avalanche, originated in the slope of the valley opposite the scarp of the rock avalanche, occluded the breach carved by fluvial erosion in the rock avalanche deposit, generating a second water body of ephemeral type. The last dam, that took place between >1962- < 1985, was caused by a sudden progradation of a conoid developed in the mouth of La Tregua creek, due to an important contribution of material by a debris flow originated in the same zone of detachment as the aforementioned case. The continuous deposition of material in the conoid zone has buried the poles of the Loma de la Lata - Talcahuano gas pipeline, built in 1998. As the zone of detachment of the eastern side

  19. Estimación de crecidas extraordinarias en el arroyo Tegua (Córdoba, a partir de evidencias geomorfológicas, sedimentológicas y modelación hidráulica

    Directory of Open Access Journals (Sweden)

    Nelso C Doffo

    2014-03-01

    Full Text Available El arroyo Tegua drena una cuenca de 160.000 ha en el centro-oeste de la provincia de Córdoba, nace en las Sierras de Comechingones (Sierras Pampeanas y desarrolla su cuenca media y baja en la llanura Pampeana. El clima regional es templado subhúmedo (PMA=800-930 mm. Con un largo historial de afectaciones a infraestructuras y tierras productivas, el curso carece de registros de aforos, lo que dificulta la evaluación de crecidas históricas. Por ello las técnicas geomorfológicas-sedimentológicas y la modelización geomorfológicas, constituyen una metodología útil para estimar crecidas extraordinarias. Se propone reconocer evidencias geomorfológicos-sedimentológicas de crecidas, determinar tramos del arroyo para la modelización hidráulica y estimar caudales máximos y su relación con desastres aluviales. Para la estimación de la descarga se utilizó el programa HEC-RAS 4.0. Se seleccionó un segmento del canal de 700 m de longitud, en la cuenca media, con un patrón subrectilíneo, estable y con una pendiente de 0,0025. Se encontraron evidencias sedimentarias y no sedimentarias de crecida y se relevaron 17 perfiles transversales. Se determinó un coeficiente de rugosidad "n" de Manning para el fondo del canal de 0,0204 en forma analítica y otro para las márgenes de 0,06 extraído de tablas. Se determinaron caudales de 55, 115, 140 y 200 m3/s, cuyas láminas de crecida son coincidentes con las evidencias relevadas. La incisión del cauce en sedimentos cementados ha estabilizado notablemente el canal, posibilitando su modelización hidráulica. Una crecida importante (2007 fue asociada con las evidencias no sedimentarias relevadas y un caudal estimado de 200 m³/s.

  20. Valoración del impacto de efluentes minero industriales del carbón en el arroyo San José de Río Turbio en Santa Cruz

    Directory of Open Access Journals (Sweden)

    Alba Lucia Caballero

    2014-06-01

    Full Text Available Los efluentes descargados al arroyo San José de Río Turbio al sudoeste de la provincia de Santa Cruz (República Argentina quedaron caracterizados mediante un análisis estadístico multivariado realizado con parámetros fisicoquímicos determinados sobre ellos (Caballero A. Dicho análisis permitió su diferenciación cualitativa y la identificación de los aportes que ocasiona cada uno de ellos. En éste trabajo se ha procedido en primer lugar a determinar la calidad de los vertidos y del agua del arroyo a partir de una escala de valoración. Dicha escala se confeccionó usando las conclusiones del análisis estadístico mencionado y la comparación de los valores obtenidos con los límites máximos de vuelco establecidos para la provincia de Santa Cruz (ley N° 2658, los Niveles guía argentinos de calidad de agua ambiente y los Niveles guía de la ley de protección Ambiental Nº 24585 (Código de minería argentino. Finalmente para valorar el impacto ocasionado por los efluentes minero industriales, se tomó en consideración además de la calidad, otros factores relevantes tales como caudal, tipo de vertido, intermitencia y peligrosidad; adoptando un modelo matemático particular que permitió asignar un puntaje asociado a una escala cualitativa. Como conclusión se pudo determinar mediante una metodología científica que el impacto ocasionado por las descargas minero industrial de carbón al curso de agua varía en un rango de alto a muy alto y esta determinada principalmente por aquellas provenientes de la planta depuradora de carbón y la central térmica.

  1. Viaje hacia el océano. Estrategias para la conservación de la Tortuga Verde*

    Directory of Open Access Journals (Sweden)

    Rodríguez-R. G.

    2006-12-01

    Full Text Available La tortuga verde, Chelonia mydas, es una especie de tortuga marina que se encuentra distribuida circunglobalmente en las zonas tropical y subtropical del planeta. Por presentar un ciclo de vida especializado y muy
    complejo, que involucra una amplia variedad de hábitats, las poblaciones de ésta tortuga son excesivamente
    vulnerables ante las distintas amenazas provocadas por el hombre, que generan una presión adicional a las amenazas naturales, aumentando el riesgo de extinción. Dentro de las principales amenazas se encuentra la explotación, al ser consideradas fuente alimenticia y medicinal o materia prima; la captura o muerte incidental y el resto de alteraciones indirectas relacionadas con la destrucción o contaminación de su hábitat. Lo anterior ha llevado a que actualmente se encuentre globalmente clasificada dentro de la categoría EN PELIGRO de extinción, según la Unión Internacional para la Conservación de la Naturaleza y los Recursos Naturales (UICN. Con este escrito, buscamos incentivar a los lectores para que de alguna forma se vean
    interesados en actuar en beneficio de la conservación de la tortuga verde, y proporcionar la información base que estimule el trabajo de investigación y proyecte a grandes rasgos las estrategias que deben tenerse en cuenta en un programa de conservación enfocado a esta tortuga marina. Las principales estrategias para la conservación de la tortuga verde, se centran en la adquisición de conocimiento sobre aspectos críticos de la biología de las tortugas marinas; manejo del hábitat y mitigación de amenazas de las poblaciones de tortugas marinas; concientización, educación, desarrollo de la capacidad para la investigación y participación de la comunidad; y cooperación regional e internacional. Dentro de las prioridades para la conservación de la tortuga verde se encuentra la implementación de proyectos de investigación y se pone especial atención, por la experiencia

  2. O português enquanto veículo da educação em Cabo Verde - Uma polivalência entre vantagem, entrave e desafio

    OpenAIRE

    Heilmair, Hans-Peter

    2011-01-01

    A qualidade do português enquanto língua da área da Educação encerra, em Cabo Verde, uma polivalência que engloba elementos de vantagem, entrave e desafio, resultante do seu carácter simultaneamente não estrangeiro e não materno. A vantagem prende-se com a larga tradição que a língua portuguesa tem como língua de ensino em Cabo Verde e, também, com o facto de a Educação em Cabo Verde integrar um espaço linguístico comum partilhado por mais sete paí...

  3. Governança ambiental e economia verde Environmental governance and the green economy

    Directory of Open Access Journals (Sweden)

    Pedro Roberto Jacobi

    2012-06-01

    Full Text Available A Conferência Rio+20 mobiliza a comunidade global em 2012 para participar de um desafiador debate sobre a realidade ambiental global e modus operandi existente quanto à temática ampla e genérica do desenvolvimento e do ambiente. Um dos temas estruturantes desta reunião é a transição para uma economia verde no contexto do desenvolvimento sustentável e da erradicação da pobreza. O tema da Governança Ambiental Global um dos carros chefe do debate na Rio+20, no intuito de promover e acelerar a transição rumo a sociedades sustentáveis, configura a construção muitas vezes, de forma controversa, das condições para a definição de novos espaços institucionais e processos decisórios compartilhados. Este artigo propõe aos leitores uma reflexão para discutir que tipo de sustentabilidade está por trás da economia verde, a sua aplicabilidade e o que deva ser priorizada na discussão de governança ambiental. Isto se explica na medida em que existe a necessidade de mudar os mecanismos de utilização dos recursos, profundamente injustos, e que impedem avanços nos processos decisórios, pois as decisões de poucos tem configurado uma lógica perversa de expropriação de recursos naturais e não resolução da exclusão social.The Rio+20 Conference will mobilize the global community in 2012 to participate in a challenging debate on the global environmental reality and the existing modus operandi with respect to the broad and generic topics of development and the environment. One of the core themes of this meeting is the transition to a green economy in the context of sustainable development and the eradication of poverty. The issue of Global Environmental Governance will top the agenda of the Rio +20 discussions, with a view to promoting and accelerating the transition to sustainable societies. It presents, often in a controversial way, the creation of conditions to define new institutional spaces and shared decision-making processes

  4. Caracterização da farinha de banana verde Green banana flour characterization

    Directory of Open Access Journals (Sweden)

    Antonia de Maria Borges

    2009-06-01

    Full Text Available O presente trabalho objetivou a obtenção, a caracterização físico-química e o controle microbiológico durante o processamento da farinha de banana (Musa spp. verde, cv. Prata, visando o seu aproveitamento na panificação, produtos dietéticos e alimentos infantis. Para obtenção da farinha, os frutos foram cortados, imersos em metabissulfito de sódio, desidratados e triturados, sendo em seguida, feitas as seguintes determinações: umidade; extrato etéreo; proteína bruta; fibra bruta; cinzas; fração glicídica; amido; valor calórico; pH; acidez total titulável; vitamina C; macrominerais (K, P, Ca, Mg, S e N; microminerais (B, Cu, Mn, Zn e Fe; coliformes a 45 °C; fungos filamentosos e leveduras; Bacillus cereus; Salmonella sp.; Staphylococcus aureus; e contagem de aeróbios mesófilos. Os resultados indicaram que a banana 'Prata' verde é viável para o processo de obtenção da farinha de banana, tendo em vista que é rica em amido, proteína, potássio, fósforo, magnésio, zinco, cobre e tem um alto valor calórico. O pH, a acidez total titulável e a vitamina C estão compatíveis com os valores encontrados em outras farinhas. Quanto ao uso de boas práticas no processamento, a farinha encontra-se dentro do padrão microbiológico ideal e, portanto, está apta para o consumo.The objective of the present study was the physicochemical characterization and the microbiological control during the processing of the green banana flour (Musa spp., Prata cultivar, aiming at the use of the flour in bread-making, dietary products and children's food. To obtain the flour, the fruits were cut, immersed in sodium meta-bisulfite, dehydrated, and ground. The following criteria were determined: humidity; ethereal extract; raw protein; raw fiber; ash; glicidic fraction; starch; caloric value; pH; total titratable acidity; vitamin C; macrominerals (K, P, Ca, Mg, S and N; microminerals (B, Cu, Mn, Zn and Fe; coliforms at 45 °C; filamentous

  5. Demand Constraints and New Demands: Regulations, Markets and Institutions Efficiency (A Case Study for Cape Verde

    Directory of Open Access Journals (Sweden)

    Bernardo Reynolds Pacheco de Carvalho

    2014-08-01

    Full Text Available Economic efficiency is a key issue in economic research and for policy design, and certainly for food security challenges. In the food system dynamics the understanding of changes and trends is crucial to improve our capacity to deal with the objectives of sustainable development and quality of life. Food system efficiency evaluation is necessary with regard to production and consumption efficiencies as well as market and governance dilemmas. Regulations and institutional efficiency are crucial aspects that are frequently forgotten, and efforts should be made to improve the capacity to deal with those methodological needs. In many situations, in the real world, data and measurements are difficult or even impossible to get in numeric or quantitative terms. Frequently, a qualitative evaluation is the only way to proceed, but measurements and numeric references are still important, mainly when changes over time are central to the research. The actual paper follows a structural food system model (WFSE – World Food Security Equation and a general equilibrium approach (ICI model – induced changes and innovation model to show in a country case study (Cape Verde the important role of markets and institutions as compared to regulation practices directed to improve economic efficiency subject to demand behavior. Cape Verde is a very challenging country with regard to the food security status (where natural resources are very poor for agricultural production but with great success in global and macro terms in the last 10 years. The main problems nowadays are clearly at local level. The present research tries to highlight the global achievements and explore local assessment efforts on food consumption conditions. A specific region is studied, in the island of Santo Antão, one of the most important production regions. Three different production systems were compared mainly with regard to their respective influence on consumption habits, incomes and

  6. Stakeholder perceptions of decision-making process on marine biodiversity conservation on sal island (Cape Verde

    Directory of Open Access Journals (Sweden)

    Jorge Ramos

    2011-01-01

    Full Text Available In the Sal Island (Cape Verde there is a growing involvement, will and investment in the creation of tourism synergies. However, much of the economic potential of the island can be found submerged in the sea: it is its intrinsic 'biodiversity'. Due to this fact, and in order to balance environmental safety and human pressure, it has been developed a strategy addressing both diving and fishing purposes. That strategy includes the deployment of several artificial reefs (ARs around the island. In order to allocate demand for diving and fishing purposes, we have developed a socio-economic research approach addressing the theme of biodiversity and reefs (both natural and artificial and collected expectations from AR users by means of an inquiry method. It is hypothesized a project where some management measures are proposed aiming marine biodiversity conservation. Using the methodology named as analytic hierarchy process (AHP it was scrutinized stakeholders' perception on the best practice for marine biodiversity conservation in the Sal Island. The results showed that to submerge obsolete structures in rocky or mixed areas have a high potential, but does not gathers consensuality. As an overall conclusion, it seems that limitation of activities is the preferred management option to consider in the future.Na Ilha do Sal (Cabo Verde existe um crescente envolvimento, vontade e investimento na criação de sinergias turísticas. Contudo, muito do potencial económico da ilha está submerso - a biodiversidade marinha. Devido a este facto, e tendo em vista promover a sustentabilidade ambiental associada ao eco-turismo, vem sendo desenvolvida uma estratégia direccionada, quer ao mergulho, quer à pesca. Esta estratégia inclui a implantação de vários recifes artificiais (RA na Baía de Santa Maria. De modo a alocar a procura para propósitos como o mergulho e a pesca, desenvolvemos um plano de pesquisa socio-económica relativo ao tema da biodiversidade

  7. Isotermas de dessorção de pimentão verde e energia envolvida no processo

    Directory of Open Access Journals (Sweden)

    Tales Prado Alves

    2015-06-01

    Full Text Available ResumoEste trabalho teve como objetivos a obtenção das isotermas de dessorção do pimentão verde e a avaliação das propriedades termodinâmicas de sorção do fruto. As isotermas foram obtidas em função da temperatura (30°C, 40°C, 50°C e 60°C em umidades relativas entre 4,0-90,0%. Os dados experimentais foram ajustados aos modelos matemáticos GAB, BET, Halsey, Henderson e Oswin para se descrever seu comportamento. Os resultados demonstram que o modelo de GAB descreveu com maior precisão as isotermas de dessorção do pimentão verde entre as faixas de atividade de água (aw selecionadas, em uma temperatura fixa. O calor isostérico de sorção (qst pôde ser determinado a partir de dados de sorção de umidade utilizando-se a derivada da equação de Clasius-Clapeyron, obtendo-se então o calor envolvido no processo de dessorção de umidade do pimentão verde fresco. A teoria da compensação entalpia-entropia ou isocinética foi aplicada aos dados experimentais, sugerindo que o processo de dessorção é conduzido pela entalpia.

  8. Y-chromosome lineages in Cabo Verde Islands witness the diverse geographic origin of its first male settlers.

    Science.gov (United States)

    Gonçalves, Rita; Rosa, Alexandra; Freitas, Ana; Fernandes, Ana; Kivisild, Toomas; Villems, Richard; Brehm, António

    2003-11-01

    The Y-chromosome haplogroup composition of the population of the Cabo Verde Archipelago was profiled by using 32 single-nucleotide polymorphism markers and compared with potential source populations from Iberia, west Africa, and the Middle East. According to the traditional view, the major proportion of the founding population of Cabo Verde was of west African ancestry with the addition of a minor fraction of male colonizers from Europe. Unexpectedly, more than half of the paternal lineages (53.5%) of Cabo Verdeans clustered in haplogroups I, J, K, and R1, which are characteristic of populations of Europe and the Middle East, while being absent in the probable west African source population of Guiné-Bissau. Moreover, a high frequency of J* lineages in Cabo Verdeans relates them more closely to populations of the Middle East and probably provides the first genetic evidence of the legacy of the Jews. In addition, the considerable proportion (20.5%) of E3b(xM81) lineages indicates a possible gene flow from the Middle East or northeast Africa, which, at least partly, could be ascribed to the Sephardic Jews. In contrast to the predominance of west African mitochondrial DNA haplotypes in their maternal gene pool, the major west African Y-chromosome lineage E3a was observed only at a frequency of 15.9%. Overall, these results indicate that gene flow from multiple sources and various sex-specific patterns have been important in the formation of the genomic diversity in the Cabo Verde islands. PMID:12942365

  9. Adubos verdes e adubação mineral nitrogenada em cobertura na cultura do trigo em plantio direto

    Directory of Open Access Journals (Sweden)

    Anísio da Silva Nunes

    2011-01-01

    Full Text Available Objetivou-se neste trabalho avaliar o efeito do cultivo de adubos verdes, associados a doses de nitrogênio (N em adubação de cobertura, no desempenho agronômico da cultura do trigo em sistema plantio direto. O experimento foi realizado em Dourados (MS, Brasil, em delineamento de blocos casualizados, com os tratamentos dispostos em esquema de parcelas subdivididas e quatro repetições. As parcelas foram constituídas pelos adubos verdes: ervilhaca peluda (Vicia villosa, crotalária (Crotalaria juncea, mucuna anã (Mucuna deeringiana, lablabe (Dolichus lablab e um tratamento- testemunha, em pousio. Nas subparcelas foram testadas quatro doses de N em cobertura: 0 (zero, 45, 90 e 135 kg ha-1, utilizando a uréia como fonte de N. Foram realizadas avaliações de massa seca das coberturas vegetais, teores de N nos tecidos da parte área dos adubos verdes e nas folhas de trigo, altura de plantas, número de perfilhos produtivos por planta, tamanho da espiga, número de grãos por espiga, massa de mil grãos, peso hectolitro e produtividade. Concluiu-se que maiores produtividades na cultura do trigo são obtidas quando é cultivado após crotalária e ervilhaca peluda e que a resposta do trigo à aplicação de N mineral em adubação de cobertura varia em função da cultura antecessora.

  10. Un aporte para el desarrollo de tecnologías verdes en el Parque Tecnológico Universitario

    Directory of Open Access Journals (Sweden)

    Ana Judith Paredes Ch.

    2006-01-01

    Full Text Available El objetivo del estudio es analizar los avances en tecnologías verdes, producto de los aportes del capital intelectual que se gesta en la Universidad del Zulia y promovido conjuntamente con el Parque Tecnológico (PTU-Zulia; donde la innovación y el desarrollo de la Planta de Presurización y Despresurización Ambiental PDA, se considera como una innovación tecnológica de impacto ambiental positivo; por lo cual, se prevé que su estrategia de inserción en el mercado verde, contribuirá a una mayor integración del sector académico, gubernamental y productivo. Sin lugar a dudas, es un desarrollo tecnológico que soporta el cumplimiento de una de las funciones fundamentales de las instituciones de educación superior, como lo es, maximizar la relación Universidad - Industria. Para el desarrollo del mismo, se efectuó la revisión de literatura gris que sustentan los avances de las innovaciones e investigaciones ejecutadas en el PTU- Zulia y fuentes bibliográficas, cuyos aportes permitieron concluir que a mediano plazo, esta fundación coadyuvará no sólo a la generación, transferencia de conocimientos y nuevos desarrollos; sino también, es capaz de mercadear sus tecnologías con perspectiva comercial, convirtiéndose en un ente potencial de recursos extraordinarios capaz de autogestionarse. Asimismo, el desarrollo de tecnologías verdes y la transferencia de conocimiento; contribuirán a la sustitución progresiva de las tecnologías contaminantes, aspecto considerado desde una perspectiva de responsabilidad social avalada por legislaciones que regulan la materia ambiental

  11. Biochemical indices and life traits of loggerhead turtles (Caretta caretta) from Cape Verde Islands.

    Science.gov (United States)

    Vieira, Sara; Martins, Samir; Hawkes, Lucy A; Marco, Adolfo; Teodósio, M Alexandra

    2014-01-01

    The loggerhead turtle (Caretta caretta) is an endangered marine reptile for whom assessing population health requires knowledge of demographic parameters such as individual growth rate. In Cape Verde, as within several populations, adult female loggerhead sea turtles show a size-related behavioral and trophic dichotomy. While smaller females are associated with oceanic habitats, larger females tend to feed in neritic habitats, which is reflected in their physiological condition and in their offspring. The ratio of RNA/DNA provides a measure of cellular protein synthesis capacity, which varies depending on changes in environmental conditions such as temperature and food availability. The purpose of this study was to evaluate the combined use of morphometric data and biochemical indices as predictors of the physiological condition of the females of distinct sizes and hatchlings during their nesting season and how temperature may influence the physiological condition on the offspring. Here we employed biochemical indices based on nucleic acid derived indices (standardized RNA/DNA ratio-sRD, RNA concentration and DNA concentration) in skin tissue as a potential predictor of recent growth rate in nesting females and hatchling loggerhead turtles. Our major findings were that the physiological condition of all nesting females (sRD) decreased during the nesting season, but that females associated with neritic habitats had a higher physiological condition than females associated with oceanic habitats. In addition, the amount of time required for a hatchling to right itself was negatively correlated with its physiological condition (sRD) and shaded nests produced hatchlings with lower sRD. Overall, our results showed that nucleic acid concentrations and ratios of RNA to DNA are an important tool as potential biomarkers of recent growth in marine turtles. Hence, as biochemical indices of instantaneous growth are likely temperature-, size- and age-dependent, the utility and

  12. Evidence for a Mega-Tsunami Generated by Giant Flank Collapse of Fogo Volcano, Cape Verde

    Science.gov (United States)

    Ramalho, R. S.; Madeira, J.; Helffrich, G. R.; Schaefer, J. M.; Winckler, G.; Quartau, R.; Adena, K.

    2013-12-01

    Mega-tsunamis generated by ocean island flank collapses are expected to be some of the most hazardous forces of nature, yet evidence for their near-source effects and inferred high run-ups so far is scarce or hotly debated. A newly discovered deposit on the northern coast of Santiago Island (Cape Verde), however, documents the magnitude and run-up height associated with this kind of event. Additionally to chaotic conglomerates distributed from sea-level up to 100 m elevation standing on slopes as steep as 20°, the deposit comprises a number of scattered megaclasts of submarine lava flows, limestone and tuff. The megaclasts are presently located over a higher substructural slope built on younger subaerial lava flows and at elevations ranging 160-220 m a.s.l. All megaclasts correspond to lithologies that crop out exclusively in nearby cliff faces. The origin of this deposit is consequently attributed to an exceptional wave that plucked blocks from the cliff face, transported them inland and deposited them over the higher slopes of the volcanic edifice. The distribution of the megaclasts, together with the local geomorphology, is in agreement with a tsunami that approached the island edifice from the west and was refracted along its northern flank, flooding a series of northwest-oriented valleys. This suggests that the well-known flank collapse of Fogo volcano, located 55 km west of Santiago, is the most likely source, a hypothesis being tested with surface exposure dating. The inferred run-up exceeded 200 m and is consistent with numerical simulations by Paris et al. 2011, implying that the present Fogo island morphology probably developed by at least one giant flank collapse with devastating near-source effects.

  13. Sea level changes during the last and present interglacials in Sal Island (Cape Verde archipelago)

    Science.gov (United States)

    Zazo, C.; Goy, J. L.; Hillaire-Marcel, C.; Dabrio, C. J.; González-Delgado, J. A.; Cabero, A.; Bardají, T.; Ghaleb, B.; Soler, V.

    2010-07-01

    Last interglacial and Holocene deposits are particularly well developed in the southern parts of Sal Island (Cape Verde Archipelago). They primarily consist of low-elevation (≤ 2 m above sea level [a.s.l.]) marine deposits made of a basal conglomerate embedded in carbonate mud, passing upwards to calcarenites. All deposits contain an abundant fauna with corals, algae and molluscs with Strombus latus Gmelin and accompanying warm water species of the "Senegalese" fauna. Small scale geomorphological mapping with detailed morphosedimentary analysis revealed lateral facies changes and imbricate (offlapping) structures that suggest small-scale oscillations of paleo-sealevels during high sea stand intervals. U-series measurements (in coral fragments) allowed unequivocal identification of Marine Isotope Substage (MIS) 5.5 units, but were not precise enough to date the sea level oscillations of the interval. However, geomorphological data and sedimentary facies analysis suggest a double sea level highstand during the peak of the last interglacial. MIS 5.5 age deposits occur at Sal and the Canary Islands at low topographic elevations, between 1 and 2 masl. However, these values are lower than the elevations measured for the correlative terraces outcropping at the western tropical Atlantic islands, widely considered to be tectonically stable. Combining the results in this paper with earlier investigations of the "Senegalese" fauna distribution as far north as the Mediterranean basin, it is suggested that the last-interglacial oceanic temperatures in this basin, as well as the temperatures in other islands of the Eastern Atlantic and the coasts of Morocco, were warmer than modern temperatures.

  14. Optimization of reloading Laguna Verde Central U1/U2, Federal Electricity Commission

    International Nuclear Information System (INIS)

    The Laguna Verde Central from the beginning of the commercial operation settled down as maximum priority 'the total safety in its operation' taking in consideration the so much experience of the good operation and of multiple recharges made in a sure and reliable way, and without separate us of the safety mystic of the CLV, but looking for to be better every day a new challenge it settled down 'to compare us with the best plants in the world' and certainly to work to classify us like one of them. For this we established a 4.0 year old plan (2003/2006) for the effectiveness all the processes in the power station that allowed us to measure our acting with the same parameters that settle down at international level (nuclear safety, industrial safety, radiological safety, capacity factor, readiness factor, cleaning of the power station, attachment to procedures, attention to the detail and certainly to be competitive in the economic aspect, summing up means to be good in all the aspects). All the above mentioned would allow us to qualify us as level 1 of WANO (world proprietors association of nuclear centrals) at the end of the year 2006 and to pass to be part of this select group. After analyzing the acting record of the power station, evaluating our technical and economic capacity, the location of the installation besides revising the international experiences was defined that one of the concepts that impact considerably so much to the capacity factors and availability besides the dose and production cost is the duration of the recharge periods, for this reason the present work is elaborated. (Author)

  15. Cabo Verde: Democracia, Cultura Política e Esfera Pública

    Directory of Open Access Journals (Sweden)

    Nataniel Andrade Monteiro

    2016-07-01

    Full Text Available O artigo procura contribuir para se compreender e descrever aquilo que, no meu entender, constitui a nova abordagem da discussão acerca da cultura política e da esfera pública em Cabo Verde. A pobreza, o desemprego, a justiça social e a segurança, entre outros assuntos, têm sido alvos de atenção por parte da sociedade civil cabo-verdiana, sobretudo a partir da década de noventa, com o advento da democracia. O que me incita a pensar sobre novas tendências no que se refere à cultura política dos cabo-verdianos, particularmente na afirmação e configuração de uma esfera pública que prima pela prática do debate e respeito pela opinião pública, capaz de influenciar as acções do sistema político. O ano de 2015 tem sido marcado por debates de repercussão nacional e internacional, como é o caso mediático do Estatuto de Titulares de Cargos Políticos (ETCP. Este acontecimento, ao que tudo indica, possibilita uma nova configuração da esfera pública cabo-verdiana, corroborada numa cultura política participativa, de modo que sirva, não apenas para os períodos eleitorais, mas igualmente como instrumento para a consolidação do sistema político.

  16. Preliminary analysis of an hydrogen generator system based on nuclear energy in the Laguna Verde site

    International Nuclear Information System (INIS)

    The shortage of fossil fuels in the next future, as well as the growing one demand of energetics and the high cost of the production of alternating fuels, it forces us to take advantage of to the maximum the fossil fuel with the one which we count and to look for the form of producing alternating fuels at a low cost and better even if these supply sources are reliable and non pollutants. It is intended a solution to the shortage of fuel; to use the thermal energy liberated of some appropriate nuclear reactor to be able to obtain a fuel but clean and relatively cheap as it is the hydrogen. In the first place the methods were looked for to produce hydrogen using thermal energy, later it was analyzed the temperature liberated by the existent nuclear reactors as well as the advanced designs, according to this liberated temperature settled down that the methods but feasible to produce hydrogen its were the one of reformed with water stream of the natural gas (methane) and the other one of the S-I thermochemical cycle, and the nuclear reactors that give the thermal energy for this production they are those of gas of high temperature. Once established the processes and the appropriate reactors, it was analyzed the site of Laguna Verde, with relationship to the free space to be able to place the reactor and the plant producer of hydrogen, as well as the direction in which blow the dominant winds and the near towns to the place, it was carried out an analysis of some explosion of tanks that could store hydrogen and the damage that its could to cause depending from the distance to which its were of the fire. Finally it was carried out an evaluation of capital and of operation costs for those two methods of hydrogen production. (Author)

  17. Preliminary evaluation of the profitability indexes of the Laguna Verde nuclear power plant

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2010-10-15

    The Laguna Verde nuclear power plant of the Federal Commission of Electricity has an installed capacity of 1,350 MW and unit 1 started commercial operation in 1990 and unit 2 in 1995. This paper is a synthesis of the results of a preliminary evaluation of the expected profitability indexes of the power plant during an economic lifetime of 40 years. The following data was used as input to the evaluation model prescribed by the Finance and Public Credit Secretary for public investment projects. Unit investment cost: 3,500 US D/k W; Fixed operation and maintenance cost: 54.{sup 45} US D/year-k W; Variable operation and maintenance cost: 0.{sup 38} US D/M Wh; Nuclear fuel cycle cost: 10.{sup 28} US D/M Wh; Lifetime capacity factor: 85%; Discount rate: 12.0% per year; Sale price of electricity to the interconnected electric system: 80.{sup 75} US D/M Wh. The output of the evaluation model is the following: Cost of electricity generated: 60.{sup 2}1 US D/M Wh; fixed cost 49.{sup 55} US D/M Wh; variable cost 10.{sup 66} US D/M Wh; Internal rate of return (Irr): 18.0%; Benefit to cost quotient (B/C): 1.341. A very systematic sensitivity analysis was done, that shows that the cost is very sensitive to the capacity factor and to the investment cost, but is very insensitive to the fixed operation and maintenance cost and to the nuclear fuel cost. Finally, a comparison was made to the evaluation of the profitability indexes of a natural gas fired combined cycle power plant. (Author)

  18. Optical and microphysical properties of smoke over Cape Verde inferred from multiwavelength lidar measurements

    Energy Technology Data Exchange (ETDEWEB)

    Tesche, Matthias (Leibniz Inst. for Tropospheric Research (IfT), Leipzig (Germany); Dept. of Environmental Science (ITM), Stockholm Univ., Stockholm (Sweden)), e-mail: matthias.tesche@itm.su.se; Muller, Detlef (Leibniz Inst. for Tropospheric Research (IfT), Leipzig (Germany); Atmospheric Remote Sensing Laboratory, Gwangju Inst. of Science and Technology, Gwangju (Korea, Republic of)); Gross, Silke (Meteorological Inst., Ludwig-Maximilians-Universitaet, Munich (Germany); Inst. of Atmospheric Physics, German Aerospace Center (DLR), Oberpfaffenhofen, Wessling (Germany)); Ansmann, Albert; Althausen, Dietrich (Leibniz Inst. for Tropospheric Research (IfT), Leipzig (Germany)); Freudenthaler, Volker (Meteorological Inst., Ludwig-Maximilians-Universitaet, Munich (Germany)); Weinzierl, Bernadett; Veira, Andreas; Petzold, Andreas (Inst. for Atmospheric Physics, German Aerospace Center (DLR), Oberpfaffenhofen, Wessling (Germany))

    2011-09-15

    Lidar measurements of mixed dust/smoke plumes over the tropical Atlantic ocean were carried out during the winter campaign of SAMUM-2 at Cape Verde. Profiles of backscatter and extinction coefficients, lidar ratios, and Aangstroem exponents related to pure biomass-burning aerosol from southern West Africa were extracted from these observations. Furthermore, these findings were used as input for an inversion algorithm to retrieve microphysical properties of pure smoke. Seven measurement days were found suitable for the procedure of aerosol-type separation and successive inversion of optical data that describe biomass-burning smoke. We inferred high smoke lidar ratios of 87 +-17 sr at 355 nm and 79 +- 17 sr at 532 nm. Smoke lidar ratios and Aangstroem exponents are higher compared to the ones for the dust/smoke mixture. These numbers indicate higher absorption and smaller sizes for pure smoke particles compared to the dust/smoke mixture. Inversion of the smoke data set results in mean effective radii of 0.22 +- 0.08 mum with individual results varying between 0.10 and 0.36 mum. The single-scattering albedo for pure biomass-burning smoke was found to vary between 0.63 and 0.89 with a very low mean value of 0.75 +- 0.07. This is in good agreement with findings of airborne in situ measurements which showed values of 0.77 +- 0.03. Effective radii from the inversion were similar to the ones found for the fine mode of the in situ size distributions

  19. Actinides inventory of the nuclear power plant of Laguna Verde Unit 1

    International Nuclear Information System (INIS)

    At the present time 435 nuclear power reactors exist for the electricity generation operating in the world and 63 in construction. Mexico has two reactors type BWR in the nuclear power plant of Laguna Verde. The nuclear fuel that is used in the nuclear reactors is retired of the reactor core when the energy that this contained has been extracted. This used fuel is known as spent nuclear fuel, the problem with this fuel is that was irradiated inside the reactor and continuous emitting a high radiation, as well as a significant heat quantity when being extracted, for what is necessary to maintain it in cooling and with some shielding to be protected of the radiation that emits. This objective is achieved confining the fuel in the spent nuclear fuel pool, where it is cooled and the same pool provides the necessary shielding to maintain the surroundings in safety radiation levels for the personnel that work in the power plant. An inconvenience of the pools is its limited storage capacity and that after certain time is necessary to remove the fuel, according to the established regulation to continue operating. To correct this inconvenience, two alternatives of spent fuel disposition exist, 1) the final disposition in deep geologic repositories and 2) the reprocessing and recycled of spent fuel. Each alternative presents its particularities and specific problems; however taking many years to be able to implement anyone of them. To carry out the second option, is indispensable to estimate the total mass of actinides generated in the spent nuclear fuel, that which represents to develop a methodology for it, this action is the main purpose of the present work. Inside our calculation method was necessary to appeal to diverse computation tools as the codes Origin-S and Keno V.a. Later on the obtained were compared with a problem type Benchmark, being obtained a smaller absolute error to 1.0%. (Author)

  20. Estructura, composición y diversidad de la selva baja caducifolia del Cerro Verde, Nizanda (Oaxaca), México

    OpenAIRE

    José Antonio Gallardo Cruz; Meave, Jorge A.; Eduardo A. Pérez García

    2005-01-01

    En este estudio se describe la estructura, la composición florística y los patrones de diversidad de la selva baja caducifolia del Cerro Verde, localizado en Nizanda (Istmo de Tehuantepec, Oaxaca, México). En 30 parcelas de 100 m2 se censaron las plantas leñosas con DAP #8805; 1 cm (estrato alto), y en cinco subcuadros de 4 m2 dentro de cada una se censaron las plantas con DAP 1 cm, pero con altura 30 cm (estrato bajo). Se encontraron 194 especies distribuidas en 52 familias. La riqueza de...

  1. The Foraging Ecology of the Endangered Cape Verde Shearwater, a Sentinel Species for Marine Conservation off West Africa.

    Science.gov (United States)

    Paiva, Vitor H; Geraldes, Pedro; Rodrigues, Isabel; Melo, Tommy; Melo, José; Ramos, Jaime A

    2015-01-01

    Large Marine Ecosystems such as the Canary Current system off West Africa sustains high abundance of small pelagic prey, which attracts marine predators. Seabirds are top predators often used as biodiversity surrogates and sentinel species of the marine ecosystem health, thus frequently informing marine conservation planning. This study presents the first data on the spatial (GPS-loggers) and trophic (stable isotope analysis) ecology of a tropical seabird-the endangered Cape Verde shearwater Calonectris edwardsii-during both the incubation and the chick-rearing periods of two consecutive years. This information was related with marine environmental predictors (species distribution models), existent areas of conservation concern for seabirds (i.e. marine Important Bird Areas; marine IBAs) and threats to the marine environment in the West African areas heavily used by the shearwaters. There was an apparent inter-annual consistency on the spatial, foraging and trophic ecology of Cape Verde shearwater, but a strong alteration on the foraging strategies of adult breeders among breeding phases (i.e. from incubation to chick-rearing). During incubation, birds mostly targeted a discrete region off West Africa, known by its enhanced productivity profile and thus also highly exploited by international industrial fishery fleets. When chick-rearing, adults exploited the comparatively less productive tropical environment within the islands of Cape Verde, at relatively close distance from their breeding colony. The species enlarged its trophic niche and increased the trophic level of their prey from incubation to chick-rearing, likely to provision their chicks with a more diversified and better quality diet. There was a high overlap between the Cape Verde shearwaters foraging areas with those of European shearwater species that overwinter in this area and known areas of megafauna bycatch off West Africa, but very little overlap with existing Marine Important Bird Areas. Further

  2. The Foraging Ecology of the Endangered Cape Verde Shearwater, a Sentinel Species for Marine Conservation off West Africa.

    Directory of Open Access Journals (Sweden)

    Vitor H Paiva

    Full Text Available Large Marine Ecosystems such as the Canary Current system off West Africa sustains high abundance of small pelagic prey, which attracts marine predators. Seabirds are top predators often used as biodiversity surrogates and sentinel species of the marine ecosystem health, thus frequently informing marine conservation planning. This study presents the first data on the spatial (GPS-loggers and trophic (stable isotope analysis ecology of a tropical seabird-the endangered Cape Verde shearwater Calonectris edwardsii-during both the incubation and the chick-rearing periods of two consecutive years. This information was related with marine environmental predictors (species distribution models, existent areas of conservation concern for seabirds (i.e. marine Important Bird Areas; marine IBAs and threats to the marine environment in the West African areas heavily used by the shearwaters. There was an apparent inter-annual consistency on the spatial, foraging and trophic ecology of Cape Verde shearwater, but a strong alteration on the foraging strategies of adult breeders among breeding phases (i.e. from incubation to chick-rearing. During incubation, birds mostly targeted a discrete region off West Africa, known by its enhanced productivity profile and thus also highly exploited by international industrial fishery fleets. When chick-rearing, adults exploited the comparatively less productive tropical environment within the islands of Cape Verde, at relatively close distance from their breeding colony. The species enlarged its trophic niche and increased the trophic level of their prey from incubation to chick-rearing, likely to provision their chicks with a more diversified and better quality diet. There was a high overlap between the Cape Verde shearwaters foraging areas with those of European shearwater species that overwinter in this area and known areas of megafauna bycatch off West Africa, but very little overlap with existing Marine Important Bird

  3. Responsabilidad social en empresas del Oriente Antioqueño con potencial de competitividad en mercados verdes

    OpenAIRE

    Ospina Orozco, Luz Victoria

    2014-01-01

    Resumen: El principal objetivo de la presente investigación es profundizar en las prácticas de Responsabilidad Social Empresarial y su relación con las estrategias de competitividad en Mercados Verdes que se presentan en las empresas del sector agroecológico en la región del Oriente Antioqueño. La Responsabilidad Social se aborda desde dos enfoques: las dimensiones económica, legal, ética y la interrelación que existe entre las mismas, propuesta por Schwartz y el enfoque propuesto por Wood qu...

  4. Evaluación de abonos verdes en el sistema de producción maíz-leguminosas

    OpenAIRE

    Prager M. Martin; Angel S. Diego I.

    2010-01-01

    En la primera parte del ensayo, se estudió el comportamiento del peso de nódulos, peso fresco y peso seco de tres leguminosas (Crotalaria, Canavalia y Guandul) a utilizar como abonos verdes y su efecto sobre sistemas de producción maíz-leguminosas (maíz-caupí, maíz-soya, maíz-frijol). Las variables consideradas (rendimiento, rendimiento equivalente de maíz, ingreso neto y tasa de retorno marginal) mostraron el efecto positivo de esta práctica sobre esta forma de producción obteniéndose mejor ...

  5. Application of probabilistic safety analysis methodology to physical security in Unit 1 of Laguna Verde Nuclear Power plant

    International Nuclear Information System (INIS)

    The implementation and application of a methodology for the probabilistic safety analysis in the Vulnerability analysis project of Laguna Verde Nuclear Power plant (CNLV), performed by Comision Federal de Electricidad with the technical support of Comision Nacional de Seguridad Nuclear y Salvaguardias (CNSNS) is presented in this work. The results obtained by the application of this methodology give the most important targets or fundamental areas of CNLV in which the execution of sabotage actions could set in danger the physical security of CNLV and the population in general. (Author)

  6. National autonomous university of Mexico RELAP/SCDAPSIM-based plant simulation and training applications to the Laguna Verde NPP

    International Nuclear Information System (INIS)

    The RELAP/SCDAPSIM code, designed to predict the behavior of reactor systems during normal and accident conditions, is being developed by Innovative Systems Software as part of the International SCDAP Development and Training Program (SDTP). This code is being used as the simulator engine for the National Autonomous University of Mexico's Simulation and Training Facility located at the Campus Morelos in Jiutepec, Mexico. This paper describes the RELAP/SCDAPSIM code, the Simulation and Training facility at the National Autonomous University of Mexico, and the application of the training system to the Laguna Verde Nuclear Power Plant located in the Mexican state of Veracruz. (author)

  7. ESTUDIO COMPARATIVO DE DIFERENTES ESPECIES DE ABONOS VERDES Y SU INFLUENCIA EN EL CULTIVO DEL MAÍZ

    OpenAIRE

    Margarita García; Mayté Álvarez; Eolia Treto

    2002-01-01

    En el período mayo-noviembre de los años 1996-1997, se llevó a cabo un experimento de campo durante dos campañas consecutivas, sobre un suelo Ferralítico Rojo de la provincia La Habana, con el objetivo de evaluar la efectividad de diferentes especies de leguminosas utilizadas como abonos verdes en rotación sobre el cultivo del maíz, determinando asimismo la eficiencia del N aportado por estas. Se comparó el efecto de Crotalaria juncea, Stizolobium aterrimum, Canavalia ensiformis y Sesbania ro...

  8. Combate ao branqueamento de capitais : o papel das entidades supervisoras : a situação em Cabo Verde

    OpenAIRE

    Correia, Aïcha Paula Alfama

    2009-01-01

    Mestrado em Finanças O objectivo deste trabalho é fazer um overview do combate ao branqueamento de capitais em Cabo Verde e enunciar o contributo das entidades afectas ao sector financeiro na prevenção desse crime. Seguidamente à apresentação do sistema financeiro caboverdiano, o trabalho faz um breve roundup à situação mundial no âmbito do branqueamento, enumerando as principais entidades envolvidas na sua prevenção e combate, o campo de acção de cada uma delas e as medidas por elas pr...

  9. Agroecología, soberanía alimentaria y la nueva revolución verde

    OpenAIRE

    Holt-Giménez, Eric; Miguel A Altieri

    2013-01-01

    Frente a la crisis alimentaria global recurrente, las instituciones del régimen corporativo alimentario proponen una nueva Revolución Verde acompañada por la continuación de las políticas económicas neoliberales. En tanto que, para empezar, éstas son causas de las crisis, este enfoque puede empeorar el problema del hambre, en lugar de resolverlo. Construir un contramovimiento depende en parte de la formación de fuertes alianzas estratégicas entre la agroecología y la soberanía ...

  10. Dragonflies (Insecta, Odonata) of São Vicente, Cape Verde Islands : 10 species on a desert island

    OpenAIRE

    Martens, Andreas; Hazevoet, Cornelis J.

    2015-01-01

    The island of São Vicente, Cape Verde Islands, has no natural and permanent surface fresh water habitats. Surprisingly, with records of 10 species of dragonflies, the island is the most species-rich in the archipelago so far (cf. Aistleitner et al. 2008, this study). Knowledge of Odonata from São Vicente is based on a small number of reports, mostly including single records only (Calvert 1893, Kirby 1897, Lobin 1982, Aistleitner et al. 2008). During a visit to the island in August 2009, AM re...

  11. Catálogo de las algas verdes cocales de las aguas continentales de Andalucía.

    OpenAIRE

    Fanés Treviño, Ingrid; Comas González, Augusto; Sánchez Castillo, Pedro Miguel

    2009-01-01

    Catálogo de las algas verdes cocales de las aguas continentales de Andalucía. En España los estudios realizados de los ecosistemas acuáticos continentales han tenido sobre todo un enfoque ecológico.En la mayoría de los trabajos limnológicos las algas se han considerado como productores primarios en su conjunto, pero en general no se ha profundizado en la identificación de estos organismos a niveles más concretos. En Andalucía se han realizado estudios taxonómicos de grupos como las diatomeas,...

  12. Investigaciones arqueológicas en la cuenca superior del Arroyo Tapalqué: Un modelo de ocupación humana para el centro de la subregión Pampa Húmeda durante el Holoceno tardío Archaeological research in the upper basin of Arroyo Tapalqué: model of human occupation for the center of the Pampa Húmeda sub-region during the late Holocene

    Directory of Open Access Journals (Sweden)

    Pablo Gerónimo Messineo

    2011-12-01

    Full Text Available En este trabajo se resumen las evidencias arqueológicas generadas para los sitios localizados en los diversos ambientes de la cuenca superior del arroyo Tapalqué. Se discute un modelo de ocupación humana para la cuenca durante el Holoceno tardío (3500-500 años AP, haciendo hincapié en las estrategias de explotación de los recursos faunísticos, la organización tecnológica y los patrones de movilidad, asentamiento y uso del espacio. Los resultados alcanzados en el presente proyecto son coincidentes con la evidencia registrada para otras áreas de la región pampeana, donde se observa un componente collector, una menor movilidad residencial y una mayor movilidad logística para acceder a recursos específicos. En cuanto a la subsistencia, estuvo basada principalmente en la explotación del guanaco, mientras que para algunos de los recursos líticos locales se empleó una estrategia tecnológica expeditiva. El surgimiento de comportamientos territoriales en el Holoceno tardío de la región provocó que los grupos intensificaran las relaciones intergrupales para acceder a recursos no disponibles localmente. En síntesis, las investigaciones en la cuenca aumentaron la evidencia disponible para el centro de la subregión Pampa Húmeda, lo cual permite sistematizar la información y generar modelos como los que aquí se presentan.In this paper, the archaeological evidence from sites located in diverse environments in the upper basin of arroyo Tapalqué is summarized. The main aim is to discuss a model of human occupation for this basin during the late Holocene (3500-500 years BP, emphasizing strategies of faunal exploitation, technological organization, and patterns of mobility, settlement, and utilization of space. The results obtained in this project concur with the evidence recorded for other areas of the Pampean region, where a collector component, lower residential mobility and access to specific resources through high logistic mobility

  13. Processos de significação em contraste: violência contra as mulheres no Brasil e em Cabo Verde

    Directory of Open Access Journals (Sweden)

    Miriam Steffen Vieira

    2013-01-01

    Full Text Available This paper aims at presenting a brief overview of the construction process of legalities in the field of violence against women in Brazil in order to suggest, then, some contrastive elements regarding this process in Cape Verde. The main goal is to identify meanings that take gender into policy making processes. In the case of Cape Verde, ethnographic data were collected at different times of public discourse on the implementation of the law that criminalized violence based on gender, in January 2011.

  14. Crianças em cena. Sobre mobilidade infantil, família e fluxos migratórios em Cabo Verde

    Directory of Open Access Journals (Sweden)

    Andréa de Souza Lobo

    2013-01-01

    Full Text Available This article is aimed at demonstrating that the universe of kinship in the Creole society of Cape Verde is not pre-defined, kinship relations are not irrevocable and free from the need for reiteration. Family relations are analyzed as a construction, a project which results from constant negotiations among its members. The central argument is that, in Cape Verde, family relations are characterized by mutual commitment, regular social contacts and an intra and inter-domestic flow of material and immaterial benefits. These requisites are fundamental for the construction of the feeling of proximity and strengthen pre-existing kinship bonds.

  15. El uso de las cubiertas verdes como reducción de la huella de carbono por absorción vegetal. Caso de Villaverde

    OpenAIRE

    Jorge Miguel Carretero Monteagudo

    2013-01-01

    ResumenEl tema de este trabajo es a grandes rasgos la comprobación de la eficacia de las cubiertas verdes en la reducción de la huella de carbono, centrándonos exclusivamente en las capacidades asimilativas del dióxido de carbono de la vegetación contenida sobre estas cubiertas. La presente comprobación de la eficacia de las cubiertas verdes, fue realizada sobre el contexto del distrito de Villaverde en la Periferia Sur de Madrid. Sobre este distrito, se analizaron diferentes factores en rela...

  16. Efeito da farinha de banana verde sobre o perfil lipídico e glicídico de ratos Wistar

    OpenAIRE

    Camila RECH; Joseane FREYGANG; Luciane Coutinho de AZEVEDO

    2014-01-01

    Introdução: a banana, quando verde, apresenta uma elevada concentração de amido resistente (AR), que resiste à digestão no intestino delgado, é fermentado no intestino grosso e possivelmente proporciona uma série de efeitos benéficos à saúde. Objetivo: avaliar o efeito da farinha de banana verde sobre peso corporal, consumo alimentar, excreção fecal e perfil lipídico e glicídico de ratos. Material e Métodos: utilizaram-se 18 ratos adultos da linhagem Wistar, distribuídos em três grupos experi...

  17. Situación medioambiental del Corredor Verde del Guadiamar 6 años después del vertido de Aznalcóllar

    OpenAIRE

    J.M. Arenas; F. Carrascal

    2004-01-01

    Hoy, el Corredor Verde del Guadiamar ha dejado de ser un proyecto que nació de una emergencia -la catástrofe minera de Aznalcóllar-, para convertirse en un nuevo espacio protegido dentro de la RENPA (Red de Espacios Naturales Protegidos de Andalucía). Este profundo cambio comenzó a fraguar en abril del año pasado, cuando -una vez culminados los trabajos de restauración- el corredor verde fue declarado como primer Paisaje Protegido de Andalucía, completando así el elenco de figuras de...

  18. INFLUENCIA DE LA INOCULACIÓN MICORRÍZICA EN LOS ABONOS VERDES. EFECTO SOBRE EL CULTIVO PRINCIPAL. ESTUDIO DE CASO: EL MAÍZ

    OpenAIRE

    Gloria M. Martín; Ramón Rivera

    2015-01-01

    El valor de los abonos verdes como vía parael suministro de nitrógeno ha sido reconocido durantesiglos por los agricultores. Otro beneficio asociado a lautilización de este tipo de plantas es que incrementan laactividad y diversidad de los microorganismos del suelo,como los hongos micorrízicos arbusculares (HMA). En lapresente reseña bibliográfica se resumen algunos resultadosobtenidos en el mundo y en Cuba en relación con ladefinición e importancia de los abonos verdes, la evaluacióndel apro...

  19. Efectividad del té verde en el tratamiento de periodontitis crónica Greentea effectiveness in chronic periodontitis treatment

    OpenAIRE

    ER Funosas; AB Martínez; M Pignolo; Maestri, L; RF Aromando; SM Scozzarro; L Escovich; PS Hermida

    2005-01-01

    El té verde ha mostrado un amplio rango de efectos fisiológicos y farmacológicos. En los últimos años se han llevado a cabo estudios sistemáticos principalmente por investigadores japoneses en los cuales se evidenciaron las acciones antimicrobianas útiles y variadas que poseen los extractos de té. El objetivo de este trabajo fue determinar, mediante el uso de registros cuantificables, la efectividad clínica y microbiológica del té verde en el tratamiento de las periodontitis crónicas. Fueron ...

  20. Preferencia de anastrepha ludens (loew) (diptera: tephritidae) por volátiles de frutos verdes o amarillos de mango y naranja

    OpenAIRE

    María de Jesús García Ramírez; Juan Cibrián Tovar; René Arzufí Barrera; José López Collado; Marcos Soto Hernández

    2004-01-01

    Se evaluó la respuesta de la mosca mexicana de la fruta, Anastrepha ludens (Loew), a volátiles de frutos verdes y amarillos de mango (Mangifera indica L. var. Haden), y naranja (Citrus aurantium L. var. Valencia). Grupos de moscas hembras y machos fueron evaluados en estado de precópula y postcópula. En los resultados de preferencia, los volátiles de los frutos verdes de mango y naranja atrajeron un mayor número de moscas en comparación con las otras opciones (p #8804;0.05). Las hembras y los...

  1. Oportunidad de complementar la red verde interior de Vitoria-Gasteiz, a través de las cubiertas de los equipamientos públicos

    OpenAIRE

    Elena Basanta Carmona

    2013-01-01

    Resumen. Uno de los principales problemas de las ciudades actuales es la fuerte contaminación atmosférica causada en gran medida por las emisiones de Gases de Efecto Invernadero (GEI) a la atmósfera. Las cubiertas de los edificios se presentan en este contexto, como elementos constructivos donde introducir superficies vegetales que ayuden a contrarrestar estas emisiones, ya que las cubiertas verdes, al formar parte de la infraestructura del verde urbano, actúan como sumideros de CO2. Este art...

  2. Conservação pós-colheita do milho verde minimamente processado sob atmosfera controlada e refrigeração

    OpenAIRE

    Alexandra Mara Goulart Nunes Mamede; Marcos José de Oliveira Fonseca; Antonio Gomes Soares; Israel Alexandre Pereira Filho; Ronoel Luiz de Oliveira Godoy

    2015-01-01

    O consumo de espigas de milho verde com endosperma normal é tradicional, no Brasil, e a sua comercialização in natura é cada vez maior no mercado de produtos minimamente processados, mostrando a necessidade de mais estudos a respeito de sua vida útil. O objetivo deste trabalho foi avaliar a influência de duas atmosferas controladas (2% O2 + 8% CO2, 4% O2 + 8% CO2) e atmosfera ambiente, na qualidade de milho verde, do tipo normal Embrapa HT1, minimamente processado, durante 12 dias de armazena...

  3. Application of six sigma to reloads design of the Laguna Verde Central with length until 17 days; Aplicacion de seis sigma para disenar recargas de la Central Laguna Verde con duracion hasta de 17 dias

    Energy Technology Data Exchange (ETDEWEB)

    Espinosa G, J.M. [Comision Federal de Electricidad, Central Laguna Verde, Subgerencia General de Operacion, Planeacion, Veracruz (Mexico)]. e-mail: mespinos@cfe.gob.mx

    2007-07-01

    The more important value in the Laguna Verde Central it is the safety. The international experience it confirms us that the more safe plants its are those more productive, this conclusion and reasoning indicate to the power station that we are in the correct road, improving the acting we will obtain that greater interest for us in the Laguna Verde Central (to increase the safety) and as added value to be able to be one of the best business for the Federal Commission of Electricity. With a future vision and commitment of high acting was integrated in an external place to all the area headquarters: (Maintenance, Planning, Operation, Parts of Reserve, Finances, Contracts, Supplies, Warehouse, design Engineering, place Engineering, engineering of systems, radiological Protection, etc.) to carry out a combined work with the unique challenge of drifting with the biggest level detail the program of a recharge and certainly to get ready to achieve their execution (all this without omitting any consideration for smaller or simpler than it seemed), looking for high quality in the works, with and bigger level of safety, with the minimum possible dose, the more reasonable cost and considering a new concept of human character, to achieve the above-mentioned without the participant personnel's stress, with the premise that a good plan and commitment of all the only one that it can bring us as result it is the success of the whole organization. (Author)

  4. Estimation of fast neutron fluence in steel specimens type Laguna Verde in TRIGA Mark III reactor; Estimacion de la fluencia de neutrones rapidos en probetas de acero tipo Laguna Verde en el reactor Triga Mark III

    Energy Technology Data Exchange (ETDEWEB)

    Galicia A, J.; Francois L, J. L. [UNAM, Facultad de Ingenieria, Departamento de Sistemas Energeticos, Ciudad Universitaria, 04510 Ciudad de Mexico (Mexico); Aguilar H, F., E-mail: blink19871@hotmail.com [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

    2015-09-15

    The main purpose of this work is to obtain the fluence of fast neutrons recorded within four specimens of carbon steel, similar to the material having the vessels of the BWR reactors of the nuclear power plant of Laguna Verde when subjected to neutron flux in a experimental facility of the TRIGA Mark III reactor, calculating an irradiation time to age the material so accelerated. For the calculation of the neutron flux in the specimens was used the Monte Carlo code MCNP5. In an initial stage, three sheets of natural molybdenum and molybdenum trioxide (MoO{sub 3}) were incorporated into a model developed of the TRIGA reactor operating at 1 M Wth, to calculate the resulting activity by setting a certain time of irradiation. The results obtained were compared with experimentally measured activities in these same materials to validate the calculated neutron flux in the model used. Subsequently, the fast neutron flux received by the steel specimens to incorporate them in the experimental facility E-16 of the reactor core model operating at nominal maximum power in steady-state was calculated, already from these calculations the irradiation time required was obtained for values of the neutron flux in the range of 10{sup 18} n/cm{sup 2}, which is estimated for the case of Laguna Verde after 32 years of effective operation at maximum power. (Author)

  5. 15 years of production of electric energy of the Laguna Verde power plant, its plans and future; 15 anos de produccion de energia electrica de la Central Laguna Verde, sus planes y futuro

    Energy Technology Data Exchange (ETDEWEB)

    Rivera C, A. [CFE, Central Laguna Verde, Km. 42.5 Carretera Cardel-Nautla, Veracruz (Mexico)]. e-mail: arr99999@cfe.gob.mx

    2005-07-01

    In the year 2005 Laguna Verde power plant reaches 15 years of producing electric power in Mexico arriving to but of 100 million Megawatts-hour from their beginning of commercial activities. The Unit 1 that entered at July 29, 1990 and the Unit 2 at April 10, 1995, obtaining the Disposability Factors from their origin is: 84.63% in Unit 1 and 83.67% in Unit 2. The march of the X XI century gives big challenges of competition to the Laguna Verde Central, with the possible opening of the electric market to private investment, for their Goals and Objectives of a world class company, taking the evaluation system and qualification of the World Association of Nuclear Operators (WANO) that promotes the Excellence in the operation of the nuclear power stations in all their partners. This Association supports the development of programs that allow the monitoring of the behavior in Safety Culture, Human fulfilment, Equipment reliability, Industrial Safety, Planning, Programming and Control, Personalized Systematic Training, and the use of the Operational experience in the daily tasks. The present work tries to explain the system of evaluation/qualification of WANO, the definition of Goals and Objectives to reach the excellence and of the programs, it will present the Program of the Reliability of Equipment with its main actions the productivity. (Author)

  6. Perspectives of the central Laguna Verde after Fukushima for the period 2012 at the 2015 in operation and maintenance; Perspectivas de la central Laguna Verde despues de Fukushima para el periodo 2012 al 2015 en operacion y mantenimiento

    Energy Technology Data Exchange (ETDEWEB)

    Rivera C, A., E-mail: arr99999@cfe.gob.mx [Comision Federal de Electricidad, Central Nucleoelectrica Laguna Verde, Carretera Cardel-Nautla Km 42.5, Veracruz (Mexico)

    2012-10-15

    The Nuclear Power Plants Management of the Federal Commission of Electricity in Mexico by means an internal analysis confronts the threat to the nuclear industry of the event of Fukushima that affected the public opinion, and the emission of new regulations. This situation demands to improve the results of the operation and maintenance of the nuclear power plant of Laguna Verde, to contribute value with their excellence in the acting to the nuclear option in Mexico. The internal analysis defined with clarity the perspectives based on weaknesses and strengths of the operation (monitoring and control of on-line parameters), and in the maintenance (sustained by the planning), enriched with the external experiences emitted by the institutes INPO and WANO for the nuclear industry, with all this strategic objectives 2012 to 2015 were presented and the initiatives as the extension of the useful life to 20 years more, as well as the focused actions to diminish the threat that the event of Fukushima influenced negatively in the public opinion, by means the diffusion of the good results that can be obtained in the nuclear power plant of Laguna Verde between 2012 and 2015, taking advantage of its modernized power of 810 MW-hour for each generating unit, doing visible that the Project of Extended Power Increase is a generation reality of 120% of the original value, to be able to enter at the excellence levels of the nuclear world. (Author)

  7. Validation of the thermal balance of Laguna Verde turbine under conditions of extended power increase; Validacion del balance termico de turbina de Laguna Verde en condiciones de aumento de potencia extendido

    Energy Technology Data Exchange (ETDEWEB)

    Castaneda G, M. A.; Cruz B, H. J.; Mercado V, J. J.; Cardenas J, J. B.; Garcia de la C, F. M., E-mail: miguel.castaneda01@cfe.gob.mx [Comision Federal de Electricidad, Central Nucleoelectrica Laguna Verde, Carretera Cardel-Nautla Km 42.5, Alto Lucero, Veracruz (Mexico)

    2012-10-15

    The present work is a continuation of the task: Modeling of the vapor cycle of Laguna Verde with the PEPSE code to conditions of thermal power licensed at present (2027 MWt) in which the modeling of the vapor cycle of the nuclear power plant of Laguna Verde was realized with PEPSE code (Performance Evaluation of Power System Efficiencies). Once reached the conditions of nominal operation of extended power increase, operating both units to 2371 MWt; after the tests phase of starting-up and operation is necessary to carry out a verification of the proposed design of the vapor cycle for the new operation conditions. All this, having in consideration that the vapor cycle designer only knows the detail of the prospective performance of the main turbine, for all the other components (for example pumps, heat inter changers, valves, reactor, humidity separators and re-heaters, condensers, etc.) makes generic suppositions based on engineering judgment. This way carries out the calculations of thermal balance to determine the guaranteed gross power. The purpose of the present work is to comment the detail of the validation carried out of the specific thermal balance (thermal kit) of the nuclear power plant, making use of the design characteristics of the different components that conform the vapor cycle. (Author)

  8. Análisis del control geológico en la torrencialidad del arroyo Las Lajas, Córdoba, a través de la modelización hidrológica

    Directory of Open Access Journals (Sweden)

    Nelso C. Doffo

    2010-08-01

    Full Text Available Se analiza la incidencia de factores litológicos, estructurales y bióticos en la respuesta hidrológica (torrencialidad de una cuenca hídrica serrana aplicando el modelo matemático ARHymo. La cuenca alta del arroyo Las Lajas se encuentra en las sierras de Comechingones, entre 1.200 y 750 m s.n.m., con una superficie de 41 km2 y una red de drenaje de orden de Horton 6. La morfología de la cuenca está fuertemente controlada por la traza de la falla Las Lajas, una estructura de actividad reciente que separa un sustrato granítico de otro metamórfico. Para el modelado, la cuenca alta fue subdividida en 42 subcuencas. Para cada una de ellas se obtuvieron valores de curva número (CN. La torrencialidad de cada subcuenca fue estimada en base a los tiempos al pico (Tp y a la distribución temporal de la onda de creciente reflejada en los hidrogramas. Se confrontaron las formas de los hidrogramas de subcuencas representativas y la distribución de las frecuencias de los tiempos al pico, con las características geológicas de la cuenca. Las subcuencas desarrolladas en metamorfitas con fuerte control estructural mostraron mayor torrencialidad que las ubicadas en el sustrato granítico.

  9. Transformaciones territoriales en áreas de riesgo de inundación. El caso del Arroyo El Gato. Partido de La Plata. Período 1980-2004

    Directory of Open Access Journals (Sweden)

    Mirela Benítez

    2007-01-01

    Full Text Available El presente trabajo tiene como objetivo realizar el estudio de los cambios territoriales a partir de la evolución en los usos de suelo, la estructura morfológica urbana y aspectos socio-económicos de la población en uno de los asentamientos poblacionales situados en las márgenes del Arroyo El Gato. El mismo se llevará a cabo a partir de la implementación de la teledetección, análisis de datos estadísticos y encuestas. El estudio de las transformaciones territoriales nos ayudará a abordar en una primera aproximación las dimensiones de peligrosidad y exposición enmarcadas en la teoría social del riesgo. Este análisis servirá como insumo para la determinación de áreas de riesgo de inundación que se está desarrollando dentro del proyecto "Inundaciones en la Provincia de Buenos Aires. Factores naturales y antrópicos desde la Teoría Social del Riesgo. Cuenca Parano-Platense. 1980-2000".

  10. El arte rupestre esquemático del Arroyo Barbaón (Parque Nacional de Monfragüe, Cáceres: contextualización arqueológica y caracterización de pigmentos

    Directory of Open Access Journals (Sweden)

    Hipólito COLLADO GIRALDO

    2015-01-01

    Full Text Available El Parque Nacional de Monfragüe (Cáceres conserva un importante complejo de arte rupestre formado por más de un centenar de abrigos con pinturas y grabados postpaleolíticos. En el presente trabajo vamos a dar a conocer un avance de las conclusiones obtenidas en las últimas campañas de investigación llevadas a cabo en el sector del cañón del Arroyo Barbaón (Serradilla. En él se ha procedido a la documentación digital de las representaciones pictográficas de sus 29 abrigos. Además, a través de las excavaciones realizadas en el interior de la Cueva del Sapo, que han proporcionado diversos materiales cerámicos y líticos, así como los restos de un hogar, se intenta contextualizar arqueológicamente el conjunto de arte rupestre. Finalmente, el hallazgo en el abrigo Friso del Terror de un fragmento de cuarcita desprendido que conservaba algunos trazos pintados ha permitido realizar análisis para caracterizar el pigmento que fue utilizado en su elaboración. Con estas aportaciones pretendemos una aproximación más precisa a cuestiones como las técnicas de realización, cronología y funcionalidad de la pintura esquemática en este espacio natural cacereño.

  11. “Uma força que atrai”: o significado das drogas para usuários de uma ilha de Cabo Verde “Una fuerza que atrae”: el significado de las drogas para usuarios de una Isla de Cabo Verde “An attractive force”: the meaning of drugs to users from an island in Cape Verde

    OpenAIRE

    Augusto César Lima Neves; Adriana Inocenti Miasso

    2010-01-01

    Este estudo teve como objetivo compreender o significado do consumo de drogas na perspectiva de usuários, atendidos em um ambulatório do Serviço da Saúde Mental de uma ilha do arquipélago de Cabo Verde. Dada a natureza do problema, esta investigação utilizou a abordagem qualitativa, tendo como referencial metodológico a Teoria Fundamentada nos Dados, à luz do Interacionismo Simbólico. Participaram do estudo nove usuários de drogas do referido ambulatório. A entrevista gravada e a observação f...

  12. Rocas Verdes Ophiolite Complexes in the Southernmost Andes: Remnants of the Mafic Igneous Floor of a Back-arc Basin that Rifted the South American Continental Crust in the Late Jurrassic and Early Cretaceous

    Science.gov (United States)

    Stern, C. R.

    2001-12-01

    The Rocas Verdes are an en echelon group of late Jurassic and early Cretaceous igneous complexes in the southernmost Andes. They consist of mafic pillow lavas, dikes and gabbros interpreted as the upper portions of ophiolite complexes formed along mid-ocean-ridge-type spreading centers. When secondary metamorphic affects are accounted for, the geochemistry of mafic Rocas Verdes rocks are similar to ocean-ridge basalts (MORB). The spreading centers that generated the Rocas Verdes rifted the southwestern margin of the Gondwana continental crust, during the start of break-up in the southern Atlantic, to form the igneous floor of a back-arc basin behind a contemporaneous convergent plate boundary magmatic arc. Late Jurassic and early Cretaceous sediments from both the magmatic arc on the southwest and the continental platform on the northeast of the basin were deposited in the Rocas Verdes basin, and these sediments are interbedded with mafic pillow lavas along the margins of the Rocas Verdes mafic complexes. Also, mafic dikes and gabbros intrude older pre-Andean and Andean lithologies along both flanks of the Rocas Verdes, and leucocratic country rocks are engulfed in the Rocas Verdes mafic complexes. These relations indicate that the Rocas Verdes complexes formed in place and are autochthonous, having been uplifted but not obducted, which may explain the lack of exposure of the deeper ultramafic units. Zircon U/Pb ages of 150+/-1 Ma for the Larsen Harbour Formation, a southern extension of the Rocas Verdes belt on South Georgia Island, and 138+/-2 Ma for the Sarmiento complex, the northernmost in the Rocas Verdes belt, indicate that this basin may have formed by "unzipping" from the south to the north, with the southern portion beginning to form earlier and developing more extensively than the northern portion of the basin. Paleomagnetic data suggest that the Rocas Verdes basin developed in conjunction with the displacement of the Antarctic Peninsula and opening of

  13. Unmatched Case-Control Study on Late Presentation of HIV Infection in Santiago, Cape Verde (2004-2011).

    Science.gov (United States)

    Moreira, António L; Fronteira, Inês; Figueiredo Augusto, Gonçalo; Martins, Maria Rosario O

    2016-03-01

    Access to free antiretroviral therapy (ART) in Sub-Saharan Africa has been steadily increasing over the past decade. However, the success of large-scale ART programmes depends on timely diagnosis and early initiation of HIV care. This study characterizes late presenters to HIV care in Santiago (Cape Verde) between 2004 and 2011, and identifies factors associated with late presentation for care. We defined late presentation as persons presenting to HIV care with a CD4 count below 350 cells/mm³. An unmatched case-control study was conducted using socio-demographic and behavioural data of 368 individuals (191 cases and 177 controls) collected through an interviewer-administered questionnaire, comparing HIV patients late and early presented to care. Logistic regression was performed to estimate odds ratio and 95% confidence intervals. Results show that 51.9% were late presenters for HIV. No differences were found in gender distribution, marital status, or access to health services between cases and controls. Participants who undertook an HIV test by doctor indication were more likely to present late compared with those who tested for HIV by their own initiative. Also, individuals taking less time to initiate ART are more likely to present late. This study highlights the need to better understand reasons for late presentation to HIV care in Cape Verde. People in older age groups should be targeted in future approaches focused on late presenters to HIV care. PMID:26999167

  14. Prevalence of anaemia and associated factors among children below five years of age in Cape Verde, West Africa.

    Science.gov (United States)

    Semedo, Rosa M L; Santos, Marta M A S; Baião, Mirian R; Luiz, Ronir R; da Veiga, Gloria V

    2014-12-01

    This study estimated the prevalence of anaemia and associated factors in a probability sample of 993 chil- dren aged 6-59 months in Cape Verde, West Africa. Odds ratio (OR) and 95% confidence interval (95% CI) were estimated from a hierarchical model for multiple analysis to assess the association between anaemia and explanatory variables. The prevalence of anaemia was 51.8% (95% CI 47.7-55.8). Children who resided within poor household conditions (OR 1.99; 95% CI 1.06-3.71) were below 24 months of age (OR 3.23; 95% CI 2.03-5.15) and recently experienced diarrhoea (OR 1.58; 95% CI 0.99-2.50) were at high risk of anaemia. Anaemia should be considered a serious public-health concern in Cape Verde, mainly for chil- dren below 24 months. Further, special consideration should be given to children who have experienced recent diarrhoea and belong to families residing in poor household conditions. PMID:25895198

  15. Particle chemical properties in the vertical column based on aircraft observations in the vicinity of Cape Verde Islands

    Energy Technology Data Exchange (ETDEWEB)

    Lieke, K.; Kandler, K. (Institut fur Angewandte Geowissenschaften, Technische Universitaet Darmstadt, Darmstadt (Germany)), e-mail: kirstenlieke@gmx.de; Scheuvens, D. (Institut fur Angewandte Geowissenschaften, Technische Universitaet Darmstadt, Darmstadt (Germany); Institut fur Physik der Atmosphaere, Johannes-Gutenberg-Universitaet Mainz, Mainz (Germany)) (and others)

    2011-09-15

    During the second Saharan Mineral Dust Experiment (SAMUM-2) field campaign, particles with geometric diameters (d) between approx0.1 and 25 mum were collected on board of the Deutsches Zentrum fur Luft- und Raumfahrt (German Aerospace Center, DLR) Falcon aircraft. Size, chemical composition and mixing state of aerosols sampled (spatially and vertically resolved) along the West African coastline and in the Cape Verde Islands region were determined by electron microscopy. A pronounced layer structure of biomass-burning aerosol and desert dust was present for all days during the sampling period from 23 January to 6 February. The aerosol composition of the small particles (d < 0.5 mum) was highly variable and in cases of biomass burning strongly dominated by soot with up to 90% relative number abundance. Internal mixtures of soot particles with mineral dust were not detected. Soot was only observed to mix with secondary sulphate. The coarse particles (d > 0.5 mum) were dominated by silicates. In the Cape Verde Islands region mineral dust is well mixed. The determination of source regions by elemental or mineralogical composition was generally not possible, except for air masses which were transported over the Gulf of Guinea. The real part of the refractive index showed little variation. In contrast, the imaginary part strongly depended on the abundance of soot (biomass-burning aerosol) and haematite (mineral dust)

  16. Áreas verdes y arbolado en Mérida, Yucatán. Hacia una sostenibilidad urbana

    Directory of Open Access Journals (Sweden)

    Susana Pérez-Medina

    2015-01-01

    Full Text Available Las áreas verdes y el arbolado son parte esencial de las dimensiones ecológica, social y económica de la sostenibilidad urbana. La presente investigación es un análisis de las áreas de vegetación en Mérida y de las condiciones que determinan su presencia y distribución. La metodología se basó en el procesamiento de imagen de satélite para captar la cobertura arbórea, se uso Google Earth como herramienta para medición y cálculo de superficies y recorridos de campo. Los resultados arrojan que las áreas verdes y cobertura arbórea se vinculan al merca - do de vivienda y sus tipologías, a los procesos de gestión y gobernanza, y a la participación social.

  17. Unmatched Case-Control Study on Late Presentation of HIV Infection in Santiago, Cape Verde (2004–2011)

    Science.gov (United States)

    Moreira, António L.; Fronteira, Inês; Augusto, Gonçalo Figueiredo; Martins, Maria Rosario O.

    2016-01-01

    Access to free antiretroviral therapy (ART) in Sub-Saharan Africa has been steadily increasing over the past decade. However, the success of large-scale ART programmes depends on timely diagnosis and early initiation of HIV care. This study characterizes late presenters to HIV care in Santiago (Cape Verde) between 2004 and 2011, and identifies factors associated with late presentation for care. We defined late presentation as persons presenting to HIV care with a CD4 count below 350 cells/mm3. An unmatched case-control study was conducted using socio-demographic and behavioural data of 368 individuals (191 cases and 177 controls) collected through an interviewer-administered questionnaire, comparing HIV patients late and early presented to care. Logistic regression was performed to estimate odds ratio and 95% confidence intervals. Results show that 51.9% were late presenters for HIV. No differences were found in gender distribution, marital status, or access to health services between cases and controls. Participants who undertook an HIV test by doctor indication were more likely to present late compared with those who tested for HIV by their own initiative. Also, individuals taking less time to initiate ART are more likely to present late. This study highlights the need to better understand reasons for late presentation to HIV care in Cape Verde. People in older age groups should be targeted in future approaches focused on late presenters to HIV care. PMID:26999167

  18. 15 years of production of electric energy of the Laguna Verde power plant, its plans and future

    International Nuclear Information System (INIS)

    In the year 2005 Laguna Verde power plant reaches 15 years of producing electric power in Mexico arriving to but of 100 million Megawatts-hour from their beginning of commercial activities. The Unit 1 that entered at July 29, 1990 and the Unit 2 at April 10, 1995, obtaining the Disposability Factors from their origin is: 84.63% in Unit 1 and 83.67% in Unit 2. The march of the X XI century gives big challenges of competition to the Laguna Verde Central, with the possible opening of the electric market to private investment, for their Goals and Objectives of a world class company, taking the evaluation system and qualification of the World Association of Nuclear Operators (WANO) that promotes the Excellence in the operation of the nuclear power stations in all their partners. This Association supports the development of programs that allow the monitoring of the behavior in Safety Culture, Human fulfilment, Equipment reliability, Industrial Safety, Planning, Programming and Control, Personalized Systematic Training, and the use of the Operational experience in the daily tasks. The present work tries to explain the system of evaluation/qualification of WANO, the definition of Goals and Objectives to reach the excellence and of the programs, it will present the Program of the Reliability of Equipment with its main actions the productivity. (Author)

  19. Unmatched Case-Control Study on Late Presentation of HIV Infection in Santiago, Cape Verde (2004–2011

    Directory of Open Access Journals (Sweden)

    António L. Moreira

    2016-03-01

    Full Text Available Access to free antiretroviral therapy (ART in Sub-Saharan Africa has been steadily increasing over the past decade. However, the success of large-scale ART programmes depends on timely diagnosis and early initiation of HIV care. This study characterizes late presenters to HIV care in Santiago (Cape Verde between 2004 and 2011, and identifies factors associated with late presentation for care. We defined late presentation as persons presenting to HIV care with a CD4 count below 350 cells/mm3. An unmatched case-control study was conducted using socio-demographic and behavioural data of 368 individuals (191 cases and 177 controls collected through an interviewer-administered questionnaire, comparing HIV patients late and early presented to care. Logistic regression was performed to estimate odds ratio and 95% confidence intervals. Results show that 51.9% were late presenters for HIV. No differences were found in gender distribution, marital status, or access to health services between cases and controls. Participants who undertook an HIV test by doctor indication were more likely to present late compared with those who tested for HIV by their own initiative. Also, individuals taking less time to initiate ART are more likely to present late. This study highlights the need to better understand reasons for late presentation to HIV care in Cape Verde. People in older age groups should be targeted in future approaches focused on late presenters to HIV care.

  20. Grãos defeituosos em café colhido verde Occurrence of commercial defective coffee beans in unripe fruits

    Directory of Open Access Journals (Sweden)

    A. A. Teixeira

    1971-01-01

    Full Text Available Frutos de café Mundo Novo, colhidos verdes, após o benefício, foram analisados quanto aos defeitos comerciais que apresentaram. A classificação foi efetuada independentemente, por três classificadores, com a contagem de grãos "normais" e daqueles considerados defeitos, isto é, "verde" (três categorias, "ardido" e "prêto". Notou-se uma elevada porcentagem de grãos normais quanto à coloração, e também a ocorrência de grãos dos tipos "ardido" e "prêto", no café não maduro. Com a remoção da película prateada verificou-se uma redução na porcentagem de grãos "verdes" e um acentuado aumento na porcentagem de grãos "ardidos", e um aumento menor na de grãos "normais" e "prêtos". Estas observações indicam que os grãos normalmente classificados no comércio como "verdes" devem esta característica à côr .anormal da película, e que os grãos "ardidos" têm, como uma das suas origens, a colheita de frutos verdes.The frequency of defective coffee beans was determined in samples of unripe fruits of the cultivar Mundo Novo (Coffea arabica.Ten samples of 1000 seeds each obtained from green fruits after sundrying and shelling were independently scored for the commercial defects by three coffee classifiers. Each one of the classifiers recorded the occurrence of green-coated, brown and black beans before and after removal of the silver skin. The data revealed that more than half of the beans had normal green color whereas 44.9 per cent were green-coated, 3.5 per cent were brown and 0.1 per cent were black beans. The removal of the silver skin affected the previous classification giving 59.7 per cent of normal green beans, 39.5 per cent of brown and 0.3 per cent of black beans. These observations indicated that the so-called green-coated beans are caused by the presence of the silver skin which retains green pigments probably chlorophyll. On the other hand the browns which have been considered as product of over-fermentation were

  1. Metodología y herramienta VERDE para la evaluación de la sostenibilidad en edificios

    Directory of Open Access Journals (Sweden)

    Macías, M.

    2010-03-01

    Full Text Available Sustainable Building has grown out of a synthesis of the environmentally-oriented Green Building movement and the broader SD movement. The green movement itself grew out of 1970’s concerns about Energy Conservation, which subsequently morphed into Energy Efficiency, as fuel prices declined during the 1980’s. During the 1980’s, energy issues receded somewhat into the background of general discussion, but concerns arose about the impact that building operations and the production of their constituent materials have on the natural environment. During the same decade, the issue of poor indoor air quality and inadequate ventilation in sealed buildings (“sick building syndrome” became a very public concern. A consensus has gradually evolved concerning the type of issues that should be included within a green type of analysis. Since 2000 the number of environmental assessment methodologies around the world has been increasing rapidly. BREEAM (BRE Environmental Assessment Method was the first system (launched in 1990, to offer an environmental label for buildings. Nevertheless, LEED (Leadership in Energy and Environmental Design has been an incontrovertible success as a tool to promote market transformation. There are a number of different schemes around the world, most of which have been based on GBC and iiSBE (International Initiative for a Sustainable Built Environment. A new assessment method based on impact reduction calculation has been developed. The tool call VERDE is applicable to commercial complexes and residential developments. The methodology are presented and discussed in the paper.

    La edificación sostenible ha crecido a partir del movimiento hacia la edificación verde y bajo el movimiento más amplio de desarrollo sostenible. El movimiento verde se desarrolla en los años 70 con especial énfasis en la conservación de la energía y la eficiencia energética. En los 80 crece la preocupación acerca del impacto que

  2. Vías verdes, reutilización de ferrocarriles en desuso para movilidad sostenible, ocio y turismo

    Directory of Open Access Journals (Sweden)

    Aycart Luengo, Carmen

    2001-10-01

    Full Text Available Greenways are autonomous infrastructures destined to the non-motorised traffic, which use linear infrastructures out of service: railway platforms decommissioned and canal or river towpaths. Their specific characteristics like FACILITY, COMFORT, SAFETY and the gentle inclines convert them into wonderful places for walking or riding bicycle, and into accessible spaces for people with limited mobility (children, elderly and disabled people. In Spain there are more than 8.000 km of abandoned railway lines, which are prepared for going through 1.800 km. On the Spanish Greenways Program, coordinated by the Spanish Railways Foundation (FFE and executed by the Ministry for the Environment, Renfe, feve, Regions, Provinces and City Councils, 38 Greenways have already been very well conditioned, adding 950 km of length and some 40 M Euro (6.500 M pta invested. In 1998 the European Greenways Association was born, presided until now by the FFE. At the international leve1 the greatest success has been to receive the United Nations Good Practices Habitat 2000 International Award. The published Greenways Guide (two volumes, where are included 1.800 Greenways km, the web site www.viasverdes.com and the continuous spreading in several media, are a essential part of the promotion labour that is developed by FFE.Las Vías Verdes son infraestructuras autónomas destinadas al tráfico no motorizado, que utilizan infraestructuras lineales fuera de servicio, como las plataformas de ferrocarriles en desuso y los caminos de sirga de canales. Sus intrínsecas cualidades como la FACILIDAD, la COMODIDAD, la SEGURlDAD y la falta de pendientes, las convierten en maravillosos lugares para el paseo, tanto a pie como en bicicleta, y en espacios accesibles para personas con movilidad reducida (niños, ancianos, minusválidos. En España, tenemos más de 8.000 kilómetros de líneas ferroviarias abandonadas, de las cuales pueden ya recorrerse 1.800 km. Dentro del Programa V

  3. Geochemical signatures of the diffuse CO2 emission from Brava volcanic system, Cape Verde

    Science.gov (United States)

    Rodriguez, F.; Bandomo, Z.; Barros, I.; Dias Fonseca, J.; Fernandes, P.; Rodrigues, J.; Melian Rodriguez, G.; Padron, E.; Dionis, S.; Sonia, S.; Gonçalves, A.; Fernandes, A.; Hernandez Perez, P. A.; Perez, N.

    2010-12-01

    Brava (67 km2) the smallest of the populated Cape Verde islands, lies at the southwestern end of the archipelagic crescent. Brava volcanic system has no documented historical eruptions, but its youthful volcanic morphology and the fact that earthquake swarms still occur indicate the potential for future eruptions. A geochemical survey of diffuse gas emissions was carried out in Brava island during February and March 2010. For this survey 228 sampling sites were selected all over the island to perform soil CO2 efflux measurements, using a portable accumulation chamber and an IR sensor, and soil temperature measurements at a depth of 30-50 cm. Soil gas samples were collected at 40 cm depth for chemical (He, H2, N2, CO2, CH4, Ar and O2) and isotopic (δ13C-CO2) analysis in 32 selected sampling sites. CO2 efflux values ranged from non-detectable up to 1.343 g m-2 d-1. To quantify the total diffuse CO2 emission from Brava volcanic system, a CO2 efflux map was constructed using sequential Gaussian simulations (sGs). Most of the studied area showed background levels of CO2 efflux (˜2 g m-2 d-1), while peak levels (>1300 g m-2 d-1) were mainly identified at Vinagre and Baleia areas. The total diffuse CO2 output from Brava volcanic system was estimated about 41.6 t d-1. The analysis of the carbon isotopic signature of the CO2 in the soil atmosphere provides an insight for evaluating the origin of the diffuse CO2 emission. Observed δ13C-CO2 values ranged from -20.86 to -1.26 ‰. A binary plot of CO2 concentrations versus δ13C-CO2 values allows us to represent three major geochemical reservoirs (atmospheric air, volcanic gas, and biogenic gas) and their related mixing lines. The chemical and isotopic analysis of Brava soil gas samples suggest a mixing with deep-seated CO2 and biogenic gas for the diffuse CO2 emission from Brava volcanic system. The lack of visible volcanic gas emission in Brava highlights the importance of monitoring diffuse CO2 emission to improve its

  4. Helium-3 and diffuse Helium-4 emissions prior the 2014-15 Fogo eruption, Cape Verde

    Science.gov (United States)

    Asensio-Ramos, María; Padrón, Eleazar; Dionis, Samara; Sumino, Hirochika; Fernandes, Paulo; Melián, Gladys V.; Barrancos, José; Hernández, Pedro A.; Rodríguez, Fátima; Silva, Sónia; Pérez, Nemesio M.; Padilla, Germán; Bandomo, Zuleyka; Cabral, Jeremias; Calvo, David; Pereira, José Manuel; Semedo, Helio

    2015-04-01

    On November 23, 2014 a new volcanic eruption started at the southwestern flank of Pico do Fogo volcano (Fogo Island, Cape Verde) after 19 years of the last eruptive event. Helium-3 emission from fumarole discharges and diffuse helium-4 degassing studies have been carried out regularly at the summit crater of Pico do Fogo since May 2007 until March 2014. The first published data on helium isotopes and diffuse helium-4 degassing from Pico do Fogo volcano is related to the field work performed on February 2010 which shows already relatively high helium-3 emission, 8.53 ± 0.9 R/RA (being R and RA the sample and atmospheric 3He/4He isotope ratio, respectively), and diffuse helium-4 degassing rate, 4.2 ± 0.2 kg d-1 (Dionis et al., 2015). During the eight year period 2007-2014, helium-4 emission rate was measured yearly at 50 different sampling sites selected in the surface environment of the summit crater of Pico do Fogo (0.14 km2) following the Darcy's law, and assuming that helium-4 emission is mainly governed by convection. The distribution of the sampling sites was carefully chosen to homogeneously cover the target area, allowing the computation of the total helium-4 emission by sequential Gaussian simulation (sGs). In addition, helium-3 emission was measured in the fumarole gases following the method described by Sumino et al. (2001). During the eight year period, convective helium-4 emission ranged between 1.2 and 5.7 kg d-1, and helium-3 emission between 7.73 and 8.82 R/RA. Both helium-4 and helium-3 emission showed significant increases on February 2010, suggesting a potential magma intrusion into the volcanic system of Pico do Fogo. However, the highest observed values of both parameters were observed on November, 2013 (helium-3 emission) and on March 2014 (diffuse helium-4 emission) suggesting a second magma intrusion giving rise to the volcanic eruption on November 23, 2014. As was observed in other volcanic systems (Padrón et al., 2013), helium degassing

  5. Lava flow hazard at Fogo Volcano, Cabo Verde, before and after the 2014-2015 eruption

    Science.gov (United States)

    Richter, Nicole; Favalli, Massimiliano; de Zeeuw-van Dalfsen, Elske; Fornaciai, Alessandro; da Silva Fernandes, Rui Manuel; Pérez, Nemesio M.; Levy, Judith; Silva Victória, Sónia; Walter, Thomas R.

    2016-08-01

    Lava flow simulations help to better understand volcanic hazards and may assist emergency preparedness at active volcanoes. We demonstrate that at Fogo Volcano, Cabo Verde, such simulations can explain the 2014-2015 lava flow crisis and therefore provide a valuable base to better prepare for the next inevitable eruption. We conducted topographic mapping in the field and a satellite-based remote sensing analysis. We produced the first topographic model of the 2014-2015 lava flow from combined terrestrial laser scanner (TLS) and photogrammetric data. This high-resolution topographic information facilitates lava flow volume estimates of 43.7 ± 5.2 × 106 m3 from the vertical difference between pre- and posteruptive topographies. Both the pre-eruptive and updated digital elevation models (DEMs) serve as the fundamental input data for lava flow simulations using the well-established DOWNFLOW algorithm. Based on thousands of simulations, we assess the lava flow hazard before and after the 2014-2015 eruption. We find that, although the lava flow hazard has changed significantly, it remains high at the locations of two villages that were destroyed during this eruption. This result is of particular importance as villagers have already started to rebuild the settlements. We also analysed satellite radar imagery acquired by the German TerraSAR-X (TSX) satellite to map lava flow emplacement over time. We obtain the lava flow boundaries every 6 to 11 days during the eruption, which assists the interpretation and evaluation of the lava flow model performance. Our results highlight the fact that lava flow hazards change as a result of modifications of the local topography due to lava flow emplacement. This implies the need for up-to-date topographic information in order to assess lava flow hazards. We also emphasize that areas that were once overrun by lava flows are not necessarily safer, even if local lava flow thicknesses exceed the average lava flow thickness. Our

  6. PSA and methods to optimize the maintenance of safety related equipment at Laguna Verde NPP

    International Nuclear Information System (INIS)

    In this paper the most significant advances reached in the development of a project to optimize the maintenance and surveillance tests of safety related equipment at Laguna Verde Nuclear Power Plant (LV NPP) are described. The first part of this process consists of the application of risk-based results and techniques using the specific PSA Level 1 of LV. Before the use of these risk-based techniques in the generation and interpretation of results, it was necessary to perform a review of the risk criteria used in PSA applications for prioritization of maintainable components, determination of risk-based allowed outage times and surveillance test intervals, definition of component risk classes, determination of risk significances for systems and components within the scope of the maintenance rule, besides criteria used in a first approach to evaluate simultaneous inoperabilities impacting the risk. Partial results of the application of risk methods for AOTs, STIs and simultaneous inoperabilities are presented. Also some results of the application of a selected method for maintenance optimization focused on reliability are explained. The results involve descriptions about the determination and prioritization of risk significant components, advances in the review of operational experience of a selected system to determine dominant failure modes and the comparison with those failures modeled in the LV PSA, operational experience review to assess the real times spent in maintenance activities for different types of components and, review of maintenance activities addressed to minimize the identified failure modes. Within the regulatory assessment of the maintenance rule implementation in LV by the utility, some results of the independent work done by our regulatory staff to select those structures systems and components (SSCs) to be under the scope of the maintenance rule are presented. Also a discussion of our perspective about the establishment of performance criteria

  7. Reducing volcanic risk on Fogo Volcano, Cape Verde, through a participatory approach: which outcome?

    Science.gov (United States)

    Texier-Teixeira, P.; Chouraqui, F.; Perrillat-Collomb, A.; Lavigne, F.; Cadag, J. R.; Grancher, D.

    2014-09-01

    This research paper presents the outcomes of Work Package 5 (socio-economical vulnerability assessment and community-based disaster risk reduction) of the MIAVITA (MItigate and Assess risk from Volcanic Impact on Terrain and human Activities) research programme conducted on Fogo Volcano, Cape Verde. The study lasted for almost 3 years (May 2010 to January 2012), of which most of the time was spent in the village of Chã das Caldeiras, situated within the 9 km wide caldera of the volcano inside Fogo Natural Park. The objectives of the programme included assessment of the vulnerability of the community at risk in terms of livelihoods, access to resources, and power relations between the local people and the different public and private institutions. These are important factors that need to be investigated in order to understand the root causes of vulnerability of the local people. This case study shows that the voluntary exposure of people to volcanic threats is linked to daily access to sources of livelihood, especially agriculture and tourism. This is despite the perception of people of the risk to their lives and properties. In order to counter the factors of vulnerability, the study also aimed to identify and enhance local capacities. To achieve such an objective, a participatory three-dimensional mapping (P3DM) activity was conducted to facilitate the dialogue between the local people and the different stakeholders as well as to prepare plans and measures to reduce volcanic risk. The P3DM was a half success considering that it has not yet led to an operational plan which takes into account the local capacities. The main reasons included (1) the non-participatory aspect of the project at the beginning which should have identified priorities for people and let them lead the project to ensure the sustainability of (2) deep conflicts within the community which complicated the focus group discussions around the 3-D map, and the difficulties in involving more

  8. Reducing volcanic risk on Fogo Volcano, Cape-Verde, through a participatory approach: which out coming?

    Directory of Open Access Journals (Sweden)

    P. Texier-Teixeira

    2013-11-01

    Full Text Available This research paper presents the outcomes of the Work Package 5 (Socio-economical Vulnerability Assessment and Community-Based Disaster Risk Reduction of the MIAVITA Research Program (MItigate and Assess risk from Volcanic Impact on Terrain and human Activities conducted in Fogo Volcano, Cape-Verde. The study lasted for almost 3 yr (May 2010–January 2012 of which most of the time was spent in the village of Chã das Caldeiras, situated within the 9 km-wide caldera of the volcano inside the Fogo Natural Park. The objectives of the program included assessment of the vulnerability of the community at risk in terms of livelihoods, access to resources, and power relations between the local people and the different public and private institutions. These are important factors that need to be investigated in order to understand the root causes of vulnerability of the local people. This case study shows that the voluntary exposure of people at volcanic threats is linked with daily access to sources of livelihood specially agriculture and tourism. This is despite the perception of people of the risk on their lives and properties. In order to counter the factors of vulnerability, the study also aimed to identify and enhance local capacities. To achieve such objective, a Participatory 3-Dimensional Mapping (P3DM activity was conducted to facilitate the dialogue between the local people and the different stakeholders as well as to prepare plans and measures to reduce volcanic risk. The P3DM was a half success considering that it has not yet led to an operational plan which takes into account the local capacities. The main reasons included (1 the non-participative aspect of the project at the beginning which should have identified priorities for people and let them lead the project to ensure the sustainability (2 deep conflicts within the community which complicated the focus group discussions around the 3-D map, and the difficulties to involve more

  9. Reducing volcanic risk on Fogo Volcano, Cape-Verde, through a participatory approach: which out coming?

    Science.gov (United States)

    Texier-Teixeira, P.; Chouraqui, F.; Perrillat-Collomb, A.; Lavigne, F.; Cadag, J. R.; Grancher, D.

    2013-11-01

    This research paper presents the outcomes of the Work Package 5 (Socio-economical Vulnerability Assessment and Community-Based Disaster Risk Reduction) of the MIAVITA Research Program (MItigate and Assess risk from Volcanic Impact on Terrain and human Activities) conducted in Fogo Volcano, Cape-Verde. The study lasted for almost 3 yr (May 2010-January 2012) of which most of the time was spent in the village of Chã das Caldeiras, situated within the 9 km-wide caldera of the volcano inside the Fogo Natural Park. The objectives of the program included assessment of the vulnerability of the community at risk in terms of livelihoods, access to resources, and power relations between the local people and the different public and private institutions. These are important factors that need to be investigated in order to understand the root causes of vulnerability of the local people. This case study shows that the voluntary exposure of people at volcanic threats is linked with daily access to sources of livelihood specially agriculture and tourism. This is despite the perception of people of the risk on their lives and properties. In order to counter the factors of vulnerability, the study also aimed to identify and enhance local capacities. To achieve such objective, a Participatory 3-Dimensional Mapping (P3DM) activity was conducted to facilitate the dialogue between the local people and the different stakeholders as well as to prepare plans and measures to reduce volcanic risk. The P3DM was a half success considering that it has not yet led to an operational plan which takes into account the local capacities. The main reasons included (1) the non-participative aspect of the project at the beginning which should have identified priorities for people and let them lead the project to ensure the sustainability (2) deep conflicts within the community which complicated the focus group discussions around the 3-D map, and the difficulties to involve more marginalized people

  10. Modeling of the vapor cycle of Laguna Verde with the PEPSE code to conditions of thermal power licensed at present (2027 MWt); Modelado del ciclo de vapor de Laguna Verde con el codigo PEPSE a condiciones de potencia termica actualmente licenciada (2027 MWt)

    Energy Technology Data Exchange (ETDEWEB)

    Castaneda G, M. A.; Maya G, F.; Medel C, J. E.; Cardenas J, J. B.; Cruz B, H. J.; Mercado V, J. J., E-mail: miguel.castaneda01@cfe.gob.mx [Comision Federal de Electricidad, Central Nucleoelectrica Laguna Verde, Carretera Cardel-Nautla Km 42.5, Veracruz (Mexico)

    2011-11-15

    By means of the use of the performance evaluation of power system efficiencies (PEPSE) code was modeled the vapor cycle of the nuclear power station of Laguna Verde to reproduce the nuclear plant behavior to conditions of thermal power, licensed at present (2027 MWt); with the purpose of having a base line before the implementation of the project of extended power increase. The model of the gauged vapor cycle to reproduce the nuclear plant conditions makes use of the PEPSE model, design case of the vapor cycle of nuclear power station of Laguna Verde, which has as main components of the model the great equipment of the vapor cycle of Laguna Verde. The design case model makes use of information about the design requirements of each equipment for theoretically calculating the electric power of exit, besides thermodynamic conditions of the vapor cycle in different points. Starting from the design model and making use of data of the vapor cycle measured in the nuclear plant; the adjustment factors were calculated for the different equipment s of the vapor cycle, to reproduce with the PEPSE model the real vapor cycle of Laguna Verde. Once characterized the model of the vapor cycle of Laguna Verde, we can realize different sensibility studies to determine the effects macros to the vapor cycle by the variation of certain key parameters. (Author)

  11. Technical specifications, Palo Verde Nuclear Generating Station, Unit No. 2 (Docket No. 50-529). Appendix A to License No. NPF-51

    International Nuclear Information System (INIS)

    Information is presented concerning the technical specifications for the Palo Verde-2 Reactor. Areas of interest discussed in this report include: safety limits and limiting safety system settings; limiting conditions for operation and surveillance requirements; design features; and administrative controls. 19 figs., 62 tabs

  12. A rock- and palaeomagnetic study of recent lavas and 1995 volcanic glass on Fogo (Cape Verde Islands)

    DEFF Research Database (Denmark)

    Knudsen, M.F.; Abrahamsen, N.; Riisager, P.

    2005-01-01

    Fogo is the only island in the Cape Verde archipelago with accounts of historical volcanic activity.Here we present palaeomagnetic data from seven geologically recent lava flows on Fogo, including one glassy, volcanic flow from the eruption in 1995. Almost all samples behaved well during...

  13. Fourth report on birds from the Cape Verde Islands, including notes on conservation and records of 11 taxa new to the archipelago

    NARCIS (Netherlands)

    Hazevoet, Cornelis J.

    1999-01-01

    Recent data on status and distribution of resident and migrant birds in the Cape Verde Islands are presented, including records of 11 taxa new to the archipelago, viz. Lesser Scaup Aythya affinis, White-tailed Tropicbird Phaethon lepturus, Great White Egret Casmerodius albus, Semipalmated Plover Cha

  14. Notes on distribution, conservation, and taxonomy OF birds from the Cape Verde Islands, including records of six species new to the archipelago

    NARCIS (Netherlands)

    Hazevoet, Cornelis J.

    1997-01-01

    Recent data on the distribution of birds in the Cape Verde Islands are presented, including records of six species new to the archipelago, viz. Pintail Anas acuta, Least Sandpiper Calidris minutilla, Snipe Gallinago gallinago, Red-rumped Swallow Hirundo daurica, African Sand Martin Riparia paludicol

  15. Whales and dolphins (Mammalia, Cetacea) of the Cape Verde Islands, with special reference to the Humpback Whale Megaptera novaeangliae (Borowski, 1781)

    NARCIS (Netherlands)

    Hazevoet, Cornelis J.; Wenzel, Frederick W.

    2000-01-01

    Observations of whales and dolphins in the Cape Verde Islands obtained in 1995 and 1996 are reported and data on the occurrence of 14 taxa are given, including four not previously reported from the region, viz. Bryde’s Whale Balaenoptera edeni, Killer Whale Orcinus orca, Rough-toothed Dolphin Steno

  16. The National Institute of Nuclear Research (ININ) and its participation in the External Radiological Emergency Plans at Laguna Verde Power plant

    International Nuclear Information System (INIS)

    In this article it is described the form in which the ININ participates in the External Radiological Emergency Plan at Laguna Verde Power plant. It is set the objective, mission and organization of this plan. The responsibilities and activities that plan has assigned are mentioned also the organization to fulfil them and the obtained results during 9 years of participation. (Author)

  17. Effect of Integrated Water-Nutrient Management Strategies on Soil Erosion Mediated Nutrient Loss and Crop Productivity in Cabo Verde Drylands

    NARCIS (Netherlands)

    Santos Baptista Costa, Dos I.; Ritsema, C.J.; Geissen, V.

    2015-01-01

    Soil erosion, runoff and related nutrient losses are a big risk for soil fertility in Cabo Verde drylands. In 2012, field trials were conducted in two agro-ecological zones to evaluate the effects of selected techniques of soil-water management combined with organic amendments (T1: compost/manure +

  18. Didiscus verdensis spec. nov. (Porifera: Halichondrida) from the Cape Verde Islands, with a revision and phylogenetic classification of the genus Didiscus

    NARCIS (Netherlands)

    Hiemstra, F.; Soest, van R.W.M.

    1991-01-01

    A new species of the circumtropical/subtropical genus Didiscus Dendy, 1922 is described from the Cape Verde Islands. Based on a phylogenetic analysis of all known species of the genus, using morphological and microscopical (including SEM) characters, it was demonstrated that the new species is close

  19. Análisis del modelo de uso-visita de los deportistas-turistas de las vías verdes andaluzas

    Directory of Open Access Journals (Sweden)

    Pablo Luque Valle

    2013-09-01

    Full Text Available En esta época del ocio y el tiempo libre asistimos a una expansión social del binomio actividades físicas en la naturaleza y turismo deportivo en la naturaleza. Las estadísticas nos revelan que las actividades deportivas más practicadas por los turistas de naturaleza son el senderismo y el cicloturismo. Fruto de este fenómeno, la Fundación de los Ferrocarriles Españoles creó en 1993 el programa Vías Verdes. Por vía verde se consideran “los antiguos trazados ferroviarios en desuso reutilizados como itinerarios no motorizados”, para la práctica de senderismo, ciclismo, patinaje, carrera, rutas ecuestres, movilidad reducida, etc., según advierte Carmen Aycart (2010, directora de Actividades Ambientales y Vías Verdes de la Fundación de los Ferrocarriles Españoles. España en la actualidad cuenta con más de 1.900 kilómetros de este tipo de infraestructura no motorizada, siendo Andalucía la región que más kilómetros de vías verdes aporta al programa nacional. Los deportistas y turistas encuentran en estas, gracias a sus características inherentes (físicas, comerciales y de usuarios-visitantes, una excelente opción para planificar sus actividades o sus viajes.

  20. To report the obtained results in the simulation with the FCS-11 and Presto codes of the two first operation cycles of the Laguna Verde Unit 1 reactor

    International Nuclear Information System (INIS)

    The objective of this work is to establish a preliminary methodology to carry out analysis of recharges for the reactor of the Laguna Verde U-1, by means of the evaluation of the state of the reactor core in its first two operation cycles using the FCS2 and Presto-B codes. (Author)

  1. The dog and cat population on Maio Island, Cape Verde: characterisation and prediction based on household survey and remotely sensed imagery

    DEFF Research Database (Denmark)

    Lopes Antunes, Ana Carolina; Ducheyne, Els; Bryssinckx, Ward;

    2015-01-01

    The objective was to estimate and characterise the dog and cat population on Maio Island, Cape Verde. Remotely sensed imagery was used to document the number of houses across the island and a household survey was carried out in six administrative areas recording the location of each animal using ...

  2. Analysis of stable isotope ratios (δ18O and δ2H) in precipitation of the Verde River watershed, Arizona 2013 through 2014

    Science.gov (United States)

    Beisner, Kimberly R.; Paretti, Nicholas V.; Tucci, Rachel S.

    2016-04-25

    Stable isotope delta values (δ18O and δ2H) of precipitation can vary with elevation, and quantification of the precipitation elevation gradient can be used to predict recharge elevation within a watershed. Precipitation samples were analyzed for stable isotope delta values between 2003 and 2014 from the Verde River watershed of north-central Arizona. Results indicate a significant decrease in summer isotopic values overtime at 3,100-, 4,100-, 6,100-, 7,100-, and 8,100-feet elevation. The updated local meteoric water line for the area is δ2H = 7.11 δ18O + 3.40. Equations to predict stable isotopic values based on elevation were updated from previous publications in Blasch and others (2006), Blasch and Bryson (2007), and Bryson and others (2007). New equations were separated for samples from the Camp Verde to Flagstaff transect and the Prescott to Chino Valley transect. For the Camp Verde to Flagstaff transect, the new equations for winter precipitation are δ18O = -0.0004z − 8.87 and δ2H = -0.0029z − 59.8 (where z represents elevation in feet) and the summer precipitation equations were not statistically significant. For the Prescott to Chino Valley transect, the new equations for summer precipitation are δ18O = -0.0005z − 3.22 and δ2H = -0.0022z − 27.9; the winter precipitation equations were not statistically significant and, notably, stable isotope values were similar across all elevations. Interpretation of elevation of recharge contributing to surface and groundwaters in the Verde River watershed using the updated equations for the Camp Verde to Flagstaff transect will give lower elevation values compared with interpretations presented in the previous studies. For waters in the Prescott and Chino Valley area, more information is needed to understand local controls on stable isotope values related to elevation.

  3. Desenvolvimento de uma escala para avaliar o grau de utilização da tecnologia da informação verde pelas organizações

    Directory of Open Access Journals (Sweden)

    Guilherme Lerch Lunardi

    2014-09-01

    Full Text Available Questões relacionadas à sustentabilidade ambiental têm-se mostrado cada vez mais importantes na pesquisa e na prática das organizações ao longo das últimas décadas. Especificamente, a área de Tecnologia da Informação (TI tem sido responsável por parte dos problemas ambientais com que a sociedade se depara atualmente. Nesse sentido, a TI Verde aparece como uma forma de aliar recursos disponíveis a políticas de sustentabilidade e economia nas organizações, gerando benefícios para o meio ambiente e para as empresas. Neste trabalho, o objetivo é desenvolver e validar um instrumento para avaliar o grau de utilização da TI Verde pelas organizações. Verificou-se que a TI Verde pode ser mensurada: pela efetividade das ações sustentáveis aplicadas à área de TI; pelo grau de orientação ambiental e pelo nível de consciência socioambiental da organização; pelo monitoramento das atividades de TI; e pelo grau de expertise ambiental na área de TI. A orientação ambiental e as ações de TI Verde aparecem como as dimensões mais efetivas, sugerindo serem as principais desencadeadoras da presença da TI Verde nas organizações. A onsciência socioambiental é, por sua vez, a dimensão menos efetiva, indicando que as questões ambientais ainda não são prioridade para as empresas investigadas.

  4. Analysis of stable isotope ratios (δ18O and δ2H) in precipitation of the Verde River watershed, Arizona 2013 through 2014

    Science.gov (United States)

    Beisner, Kimberly R.; Paretti, Nicholas V.; Tucci, Rachel S.

    2016-01-01

    Stable isotope delta values (δ18O and δ2H) of precipitation can vary with elevation, and quantification of the precipitation elevation gradient can be used to predict recharge elevation within a watershed. Precipitation samples were analyzed for stable isotope delta values between 2003 and 2014 from the Verde River watershed of north-central Arizona. Results indicate a significant decrease in summer isotopic values overtime at 3,100-, 4,100-, 6,100-, 7,100-, and 8,100-feet elevation. The updated local meteoric water line for the area is δ2H = 7.11 δ18O + 3.40. Equations to predict stable isotopic values based on elevation were updated from previous publications in Blasch and others (2006), Blasch and Bryson (2007), and Bryson and others (2007). New equations were separated for samples from the Camp Verde to Flagstaff transect and the Prescott to Chino Valley transect. For the Camp Verde to Flagstaff transect, the new equations for winter precipitation are δ18O = -0.0004z − 8.87 and δ2H = -0.0029z − 59.8 (where z represents elevation in feet) and the summer precipitation equations were not statistically significant. For the Prescott to Chino Valley transect, the new equations for summer precipitation are δ18O = -0.0005z − 3.22 and δ2H = -0.0022z − 27.9; the winter precipitation equations were not statistically significant and, notably, stable isotope values were similar across all elevations. Interpretation of elevation of recharge contributing to surface and groundwaters in the Verde River watershed using the updated equations for the Camp Verde to Flagstaff transect will give lower elevation values compared with interpretations presented in the previous studies. For waters in the Prescott and Chino Valley area, more information is needed to understand local controls on stable isotope values related to elevation.

  5. Cabo verde e a importação do ideologema brasileiro da mestiçagem

    Directory of Open Access Journals (Sweden)

    José Carlos dos Anjos

    2000-11-01

    Full Text Available Este artigo busca desvelar as relações entre a formação de intelectuais e as lutas em torno da definição da identidade nacional em Cabo Verde. Até as duas primeiras décadas do século XX a África aparecia para os intelectuais cabo-verdianos como potência adormecida, a colonização portuguesa era parcialmente contestada e uma identidade atlântica emergia concorrente à identidade lusitana. A racialização dessa identidade atlântica sob os pressupostos "brasileiros" da mestiçagem e a hegemonia dessa afirmação de identidade no arquipélago se dá na década de trinta sob o silêncio político imposto pelo regime de Salazar. Após a discussão sobre os efeitos dessa censura política para a autonomia da literatura cabo-verdiana o artigo conclui sugerindo que identidades (africanas, mestiças, crioulas, européias disputadas em nível transcontinental e estratégias geopolíticas transatlânticas adquiriram sentidos inesperados nesse contexto e conjuntura determinada.This article intends to reveal the relationships between the intellectual's point of view and the controversy over the national identity of Cape Verde and the arguments over it's definition. Up until the first two decades of the 20th century XX the intellectuals regarded Africa as a sleep potion, Africa objected to the colonization of the Portuguese people. Therefore a new Atlantic identity emerged, competitive to the Portuguese colonization. Africa appeared for the intellectuals as asleep potency, the Portuguese colonization was objected partially and an Atlantic identity emerged competitive to the Portuguese identity. The racialization of that Atlantic identity under the Brazilian point of view and the hegemony of that identity statement in the archipelago takes place in the decade of thirty under the political silence imposed by the regime of Salazar. After the discussion on the effects of that political censorship on the autonomy of the literature in Cape Verde the

  6. Rock magnetic and geochemical proxies for iron mineral diagenesis in a tropical lake: Lago Verde, Los Tuxtlas, East Central Mexico

    Science.gov (United States)

    Ortega, Beatriz; Caballero, Margarita; Lozano, Socorro; Vilaclara, Gloria; Rodríguez, Alejandro

    2006-10-01

    Magnetic and non-magnetic mineral analyses were conducted on a lacustrine sequence from Lago Verde in the tropical coast along the Gulf of Mexico that covers the last 2000 years. The site witnessed the transformation of the environment since the early Olmec societies until forest clearance in the last century. Through these analyses we investigated the processes that affected the magnetic mineralogy in order to construct a model of past environmental changes, and compare this model with the archeological record and inferred climatic changes in the northern hemisphere of tropical America. Volcanic activity has played a major influence on sediment magnetic properties, as a purveyor of Ti-magnetites/Ti-maghemites, and as a factor of instability in the environment. Anoxic reductive conditions are evident in most of Lago Verde's sedimentary record. Direct observations of magnetic minerals and ratios of geochemical (Fe, Ti), and ferrimagnetic ( χf) and paramagnetic ( χp) susceptibility ( χ) data, are used as parameters for magnetite dissolution ( χp/ χ, Fe/ χf), and precipitation ( χf/Ti) of magnetic minerals. Intense volcanic activity and anoxia are recorded before A.D. 20, leading to the formation of framboidal pyrite. Increased erosion, higher evaporation rates, lower lake levels, anoxia and reductive diagenesis in non-sulphidic conditions are inferred for laminated sediments between A.D. 20-850. This deposit matches the period of historical crisis and multiyear droughts that contributed to the collapse of the Maya civilization. Dissolution of magnetite, a high organic content and framboidal pyrite point to anoxic, sulphidic conditions and higher lake levels after A.D. 850. Higher lake levels in Lago Verde broadly coincide with the increased precipitation documented during the Medieval Warm Period (A.D. 950-1350) in the northern tropical and subtropical regions of the American continent. For the Little Ice Age (A.D. 1400-1800), the relatively moist conditions

  7. Participation of the ININ in the activities of radioactive waste management of the Laguna Verde Central; Participacion del ININ en las actividades de gestion de desechos radiactivos de la Central Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Medrano L, M.; Rodriguez C, C.; Linares R, D. [ININ, Gerencia Subsede Sureste (Mexico); Ramirez G, R.; Zarate M, N. [Central Laguna Verde, CFE (Mexico)]. e-mail: maam@nuclear.inin.mx

    2006-07-01

    From the beginning of the operation of the Laguna Verde Central (CLV) the National Institute of Nuclear Research (ININ) has come supporting the CLV in the activities of administration of the humid and dry radioactive waste generated by the operation of the two units of the CLV, from the elaboration of procedures to the temporary storage in site, the implementation of a program of minimization and segregation of dry solid wastes, until the classification of the lots of humid waste and bulk dry wastes. In this work the description of the management activities of radioactive wastes carried out by the ININ in the facilities of the CLV to the date is presented, as well as some actions that they are had drifted in the future near, among those that it stands out the determination of the total alpha activity in humid samples by means of scintillation analysis. (Author)

  8. Out of operation in simultaneous way of the two reactors of nucleoelectric central of Laguna Verde(Mexico); Fuera de operacion, de maneira simultanea, los dos reactores de la central nucleoelectrica de Laguna Verde (Mexico)

    Energy Technology Data Exchange (ETDEWEB)

    Mar, Bernardo Salas, E-mail: salasmarb@yahoo.com.mx [Universidad Nacional Autonoma de Mexico, D.F. (Mexico). Facultad de Ciencias. Departamento de Fisica

    2013-11-01

    The two nuclear reactors that Mexico has in the Laguna Verde Nuclear Power Plant, were out of operation simultaneously in September 2012. First it was reported that one of the reactors had problems with the diesel generator, while the other had problems with the nuclear fuel reloading. The day after it was reported a problem related to sediment in the Obra de Toma, place the plant feeds seawater to cool the condenser the depth to which it must operate is 6 meters, with the current level of 1.5 meters, causing a lack of cooling water. Finally it was reported the cause of the suspension of operations, the cracks in jet pumps in both reactors. It is described a brief analysis of these opinions. The reactors are of cooling water of General Electric (BWR-5) and generate 1640 MWe each one.

  9. Estimation of requirements of eolic energy equivalent to the electric generation of the Laguna Verde nuclear power plant; Estimacion de requerimientos de energia eolica equivalente a la generacion electrica de la Central Nucleoelectrica de Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Garcia V, M.A.; Hernandez M, I.A. [Facultad de Ingenieria, Division de Ingenieria Electrica, UNAM, 04510 Mexico D.F. (Mexico)]. E-mail: maiki27@yahoo.com; Martin del Campo M, C. [Facultad de Ingenieria, Laboratorio de Analisis en Ingenieria de Reactores Nucleares, UNAM, Paseo Cuauhnahuac 8532, 62550 Jiutepec, Morelos (Mexico)

    2004-07-01

    The advantages are presented that have the nuclear and eolic energy as for their low environmental impact and to the human health. An exercise is presented in the one that is supposed that the electric power generated by the Laguna Verde Nuclear Power plant (CNLV), with capacity of 1365 M W, it should be produced by eolic energy when in the years 2020 and 2025 the units 1 and 2 of the CNLV reach its useful life and be moved away. It is calculated the number of aero generators that would produce the electric power average yearly of the CNLV, that which is equal to install eolic parks with capacity of 2758 M W, without considering that it will also be invested in systems of back generation to produce electricity when the aero generators stops for lack of wind. (Author)

  10. Applications of the monitor of loose parts in the cycle 6 of the Laguna Verde Unit 2 power plant; Aplicaciones del monitor de partes sueltas en el ciclo 6 de la Unidad 2 de la central Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Calleros, G.; Mendez, A.; Gomez, R.A. [Comision Federal de Electricidad, Central Nucleoelectrica Laguna Verde, Veracruz (Mexico); Castillo, R.; Bravo, J.M. [ININ, A.P. 18-1027, 11801 Mexico D.F. (Mexico)]. E-mail: gcm9acpp@cfe.gob.mx

    2004-07-01

    The monitor of loose parts (Loose Parts Monitoring System) installed in the Unit 2 of the Laguna Verde Central is a tool to detect strange objects or parts loose in the system of refrigeration of the reactor that could be impacted in the walls of the recirculation knots or in the internal of the reactor. In this work two applications are shown carried out with the Monitor of Loose Parts, determining the characteristics of the stable nominal conditions, those which when changing, they are used to diagnose during the Cycle 6 of the Unit 2, failures in the components of the the recirculation circuits or to identify mechanical vibrations of the recirculation knots induced by a flow of recirculation bistable associated to operative conditions of the reactor. (Author)

  11. Simulação numérica do comportamento térmico do reservatório do Rio Verde Numerical simulation of the temperature dynamics at Rio Verde Reservoir

    OpenAIRE

    Danieli Mara Ferreira; Cynara Cunha

    2013-01-01

    Mudanças na temperatura da água e na dinâmica de estratificação térmica podem causar efeitos negativos sobre os processos físicos, químicos e biológicos de reservatórios. A variação da temperatura afeta a densidade da água e, como consequência, altera os processos de transporte. Um modelo unidimensional de transferência de calor é utilizado para simular a temperatura do reservatório do Rio Verde, localizado na região metropolitana de Curitiba, Estado do Paraná. Na solução da equação, usou-se ...

  12. Dinámica geomorfológica de la desembocadura del Arroyo Pando, Uruguay. Geografía histórica y SIG, análisis de tendencias naturales y efectos antrópicos sobre sistemas dinámicos

    OpenAIRE

    Gutiérrez, Ofelia; Panario, Daniel

    2012-01-01

    La desembocadura de redes de drenaje en playas arenosas son ambientes muy dinámicos y particularmente sensibles a perturbaciones de origen antrópico; en el presente estudio de caso se analizan las relaciones entre las diversas intervenciones producidas, tanto a nivel de la cuenca del Arroyo Pando, Uruguay, como en las playas aledañas y las dunas costeras, y las modificaciones observadas a través de una serie de imágenes y cartografía digital, manejadas con un encare metodológic...

  13. Arroyo Limay chico: un ejemplo de captura fluvial en la cuenca superior del Río Limay (SE de Neuquén Limay Chico stream: an example of fluvial capture in the upper basin of the Limay River (SE of Neuquén

    Directory of Open Access Journals (Sweden)

    Emilio F. González Díaz

    2008-03-01

    Full Text Available Se describe un proceso de captura fluvial, por erosión retrocedente, del arroyo Limay Chico -afluente del río Limay- sobre el sector austral de las cabeceras de la cuenca de drenaje del arroyo Alicurá, tributaria a su vez del río Collón Cura. Se interpreta que la causal del fenómeno estuvo relacionada con las nuevas condiciones climáticas postglaciarias (más húmedas y la contemporánea profundización del troncal río Limay, morfológicamente expresada por modernas terrazas de erosión inferiores, las que fueran reconocidas en la zona de afluencia del arroyo Limay Chico, con anterioridad al llenado del embalse de Alicurá. Además, la captura fluvial y el consecuente desvío de los caudales de un tramo de las nacientes del arroyo Alicurá hacia la cuenca del Limay Chico, mostró condiciones o factores previos coadyuvantes: 1 la disposición topográfica inferior de la cuenca de éste último con respecto a la de Alicurá; 2 la mayor pendiente y la localización del valle del arroyo Limay Chico a lo largo de una zona de debilidad estructural y litológica representada por la falla Limay Chico, asistió la dinámica de la erosión fluvial retrógrada; 3 la disposición transversal de las cabeceras de la cuenca del arroyo Alicurá. Se han reconocido abras de viento e interpretado dos probables codos de captura. El consiguiente aumento de la descarga del arroyo Limay Chico, promovió en su cuenca un fenómeno local de rejuvenecimiento estático. También se acepta una estrecha relación entre el cambio climático postglaciario y la ocurrencia de los múltiples deslizamientos rotacionales observados a lo largo de la abrupta escarpa de falla generada por la falla Limay Chico, presumiéndose que la activa y coetánea erosión lateral del arroyo Limay Chico, contribuyó al proceso gravitacional. Estos deslizamientos, que se caracterizan por la coalescencia lateral de sus muescas de desprendimiento, han generado el distintivo e irregular paisaje

  14. Pueden los cambios tecnológicos basados en el análisis costo-beneficio cumplir con las metas de la sustentabilidad? Análisis de un caso de la Región de Tres Arroyos. Argentina.

    OpenAIRE

    Flores, Claudia C.; Sarandón, Santiago J.

    2008-01-01

    En la agricultura actual, los cambios tecnológicos son determinados según su conveniencia económica, analizada mediante el análisis costo beneficio, el cual no permite tener en cuenta los costos ecológicos asociados a la utilización de las nuevas tecnologías. En la década del ’90, en la Región de Tres Arroyos, se ha observado un importante incremento en el uso de fertilizantes, debido a un análisis costo beneficio conveniente. Para analizar las consecuencias de esos cambios sobre la sustentab...

  15. Reconocimiento de la zona no-saturada y características ambientales del acuífero freático en la cuenca de los arroyos Martín-Carnaval, provincia de Buenos Aires, Argentina : Metodología

    OpenAIRE

    Hernández, Mario Alberto; Ruíz de Galarreta, Víctor Alejandro; Minghinelli, Leonardo F.

    1994-01-01

    Se expone la metodología utilizada para el reconocimiento de las características hidrodinámicas de la ZNS y acuífero freático en la cuenca de los arroyos Martín-Carnaval y la determinación de características de implicancia ambiental. Sobre la base de la elección de tres áreas representativas de diferentes condiciones se instalan sendas estaciones de registración mediante sensores pluviográficos, termográficos, freatigráficos, tensiométricos (tensión matricial), de contenido de humedad (sondaj...

  16. Sexualidade juvenil de classes populares em Cabo Verde: os caminhos para a prostituição de jovens urbanas pobres The sexual culture of marginalized youth in Cape Verde: pathways to the prostitution of poor young women

    Directory of Open Access Journals (Sweden)

    José Carlos Gomes dos Anjos

    2005-04-01

    Full Text Available O artigo apresenta apontamentos sobre comportamento de jovens marginalizados em Cabo Verde e busca integrar essas notas etnográficas a teorias da masculinidade. Explorando os caminhos que levam à prostituição entre meninas pobres, o artigo focaliza como mudanças nas experiências da sexualidade conduziram a uma reversão de arranjos sociais prévios nos quais os homens eram 'caçadores de saia' e provedores, para este novo regime em que as mulheres buscam seus parceiros com base no desejo e buscam, inclusive na prostituição, os meios econômicos para sustentar tais relações. O artigo usa dados de entrevistas detalhadas, algumas discussões de grupo focais e observação participante para examinar percepções masculinas de caminhos femininos para a prostituição.The paper provides insights into the behavior of marginalized youth in Cape Verde and integrates these insights into theories of masculinities. Exploring the pathways to prostitution among young poor urban women and their relationship to their peers, the poor young men they interact with, the paper focuses on how a change in sexual norms has led to a reversal of previous social arrangements, in which men were the 'skirt chasers' and the providers, to ones in which women seek partners based on desire and have the economic means to sustain such relationships. The paper uses data from some in-depth interviews, some focus group discussions, and participant observation to examine male perceptions of pathways to female prostitution.

  17. Turbine model for the Laguna Verde nucleo electric central based in the RELAP code; Modelo de turbina para la Central nucleoelectrica de Laguna Verde basado en el codigo RELAP

    Energy Technology Data Exchange (ETDEWEB)

    Cortes M, F.S.; Ramos P, J.C.; Salazar S, E.; Chavez M, C. [Facultad de Ingenieria, Division de Estudios de Posgrado, Grupo de Ingenieria Nuclear, UNAM (Mexico)]. e-mail: cchavez2@cableonline.com.mx

    2003-07-01

    The Nuclear Power stations as Laguna Verde occupy at the present time a place every time but important as non pollutant alternative, economic and trusty to generate electricity. It is for it that the Group of Nuclear Engineering of the Engineering Faculty (GrlNFI) of the National Autonomous University of Mexico (UNAM) it develops investigation projects applied to Nuclear Centrals. One of the projects in process is the development of a Classroom simulator, which it can configures to consent to diverse models of nuclear systems with training purposes in normal operation, or, to consent to specialized nuclear codes for the analysis of transitory events and have a severe accident. This work describes the development, implementation and it proves of a simplified model of the Main turbine to be integrated to the group of models of the Classroom simulator. It is part of the current effort of GrlNFI guided to obtain a representation of all the dynamic models necessary to simulate the Plant Balance of the Laguna Verde Central. It is included the development of the unfolding graphic which represent the modeling of the Main turbine, and of the control interface that allows the user to manipulate in simple way, direct and interactive this device during the training or the analysis. With this work it is wanted to contribute to the training of new technicians and to support the operation personnel of the Centrals. Also, the developed infrastructure is guided to contribute in the design and analysis of new Nuclear Power stations with the contribution of new computational tools for the visualization, simulation and process control. (Author)

  18. Development of an interactive model of the Laguna Verde nuclear power plant based on the RELAP/SCDAP code; Desarrollo del modelo interactivo de la central nucleoelectrica de Laguna Verde basado en el codigo RELAP/SCDAP

    Energy Technology Data Exchange (ETDEWEB)

    Salazar C, J.H.; Ramos P, J.C.; Salazar S, E.; Chavez M, C. [LAIRN, FI-UNAM, DEPFI Campus Morelos, Jiutepec, Morelos (Mexico)]. e-mail: cchavez2@cableonline.com.mx

    2003-07-01

    The present work describes the development of an interactive model of the Nuclear power plant of Laguna Verde (CNLV) based on the RELAP/SCDAP nuclear code, and it incorporation to a classroom simulator. The functional prototype it allows to make evaluations for operational transients and postulates accidents, with capacitation purposes, training, analysis and design. It emphasizes on the methodology used to establish the inter activity. Such methodology, is based on a modular structure in the one that multiple processes can be executed in an independent way and where the generated information is stored in segments of shared memory (characteristic that allows the UNIX operating system) and sent to the different processes by means of communication routines developed in C programming language. The utility of the system is demonstrated by means of the use of interactive display graphics (mimic diagrams, pictorials and tendency graphics) for the simultaneous dynamic visualization of the variables more significant that involve to the pattern of a transitory event type (for example failure of the controller of feeding water in a BWR reactor). Near with the interactive module, it was developed a model of the reactor of the CNLV for the code of better estimation RELAP/SCDAP. Finally the evaluation of the model is described, where it is interpreted in general form the behavior of those main variables that describe the stationary state, corroborating that follow the same tendency that those reported in the FSAR (Final Safety Analysis Report) of the Laguna Verde plant. The obtained results allow to conclude that the made development was satisfactory and that it presents enormous advantages regarding the capacity and time of analysis when using tools of visualization in real time of execution. (Author)

  19. Analysis of internal events for the Unit 1 of the Laguna Verde nuclear power station; Analisis de eventos internos para la Unidad 1 de la Central Nucleolelectrica de Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Huerta B, A.; Aguilar T, O.; Nunez C, A.; Lopez M, R. [Comision Nacional de Seguridad Nuclear y Salvaguardias, 03000 Mexico D.F. (Mexico)

    1993-07-01

    This volume presents the results of the starter event analysis and the event tree analysis for the Unit 1 of the Laguna Verde nuclear power station. The starter event analysis includes the identification of all those internal events which cause a disturbance to the normal operation of the power station and require mitigation. Those called external events stay beyond the reach of this study. For the analysis of the Laguna Verde power station eight transient categories were identified, three categories of loss of coolant accidents (LOCA) inside the container, a LOCA out of the primary container, as well as the vessel break. The event trees analysis involves the development of the possible accident sequences for each category of starter events. Events trees by systems for the different types of LOCA and for all the transients were constructed. It was constructed the event tree for the total loss of alternating current, which represents an extension of the event tree for the loss of external power transient. Also the event tree by systems for the anticipated transients without scram was developed (ATWS). The events trees for the accident sequences includes the sequences evaluation with vulnerable nucleus, that is to say those sequences in which it is had an adequate cooling of nucleus but the remoting systems of residual heat had failed. In order to model adequately the previous, headings were added to the event tree for developing the sequences until the point where be solved the nucleus state. This process includes: the determination of the failure pressure of the primary container, the evaluation of the environment generated in the reactor building as result of the container failure or cracked of itself, the determination of the localization of the components in the reactor building and the construction of boolean expressions to estimate the failure of the subordinated components to an severe environment. (Author)

  20. Petrología y geoquímica de las rocas máficas-ultramáficas del área río Las Águilas - arroyo de Los Manantiales, Provincia de San Luis

    Directory of Open Access Journals (Sweden)

    G. Ferracutti

    2007-09-01

    Full Text Available Dada la carencia de información de campo detallada, se efectuó el mapeo y muestreo de los cuerpos máficos-ultramáficos aflorantes entre el río de Las Águilas y el arroyo de Los Manantiales en la provincia de San Luis. La escasa información de campo, petrográfica y geoquímica de las unidades de éste área dificultaba la vinculación entre las rocas aflorantes y aquellas reconocidas en los testigos de perforación. Los cuerpos ígneos de interés se hallan en contacto con el basamento metamórfico a través de fallas de alto ángulo de buzamiento y/o contactos intrusivos. En Las Higueras y Virorco, se identificaron afloramientos de rocas máficas-ultramáficas con textura magmática primaria de tipo estratificada no-uniforme de regularidad intermitente. El estudio de estos cuerpos generó un desafío particular debido a los procesos deformación, metamorfismo y alteración que los han afectado. Estos factores no solo modificaron la mineralogía de las rocas sino que ademas generaron bloques basculados reconocidos por la presencia de texturas de estratificación magmaticas cuya posición espacial no se corresponde con la magmática originaria. Los patrones de los elementos de tierras raras normalizados a condrita permiten identificar un proceso de diferenciación, con mayor enriquecimiento en los contenidos de tierras raras en las rocas más evolucionadas. En base a los contenidos de tierras raras de las rocas ultramáficas, se infiere que la cristalización magmática estuvo controlada por la presencia de olivino y ortopiroxeno.