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Sample records for huevos verdes vein

  1. Geology of the epithermal Ag-Au Huevos Verdes vein system and San José district, Deseado massif, Patagonia, Argentina

    Science.gov (United States)

    Dietrich, Andreas; Gutierrez, Ronald; Nelson, Eric P.; Layer, Paul W.

    2012-03-01

    The San José district is located in the northwest part of the Deseado massif and hosts a number of epithermal Ag-Au quartz veins of intermediate sulfidation style, including the Huevos Verdes vein system. Veins are hosted by andesitic rocks of the Bajo Pobre Formation and locally by rhyodacitic pyroclastic rocks of the Chon Aike Formation. New 40Ar/39Ar constraints on the age of host rocks and mineralization define Late Jurassic ages of 151.3 ± 0.7 Ma to 144.7 ± 0.1 Ma for volcanic rocks of the Bajo Pobre Formation and of 147.6 ± 1.1 Ma for the Chon Aike Formation. Illite ages of the Huevos Verdes vein system of 140.8 ± 0.2 and 140.5 ± 0.3 Ma are 4 m.y. younger than the volcanic host rock unit. These age dates are among the youngest reported for Jurassic volcanism in the Deseado massif and correlate well with the regional context of magmatic and hydrothermal activity. The Huevos Verdes vein system has a strike length of 2,000 m, with several ore shoots along strike. The vein consists of a pre-ore stage and three main ore stages. Early barren quartz and chalcedony are followed by a mottled quartz stage of coarse saccharoidal quartz with irregular streaks and discontinuous bands of sulfide-rich material. The banded quartz-sulfide stage consists of sulfide-rich bands alternating with bands of quartz and bands of chlorite ± illite. Late-stage sulfide-rich veinlets are associated with kaolinite gangue. Ore minerals are argentite and electrum, together with pyrite, sphalerite, galena, chalcopyrite, minor bornite, covellite, and ruby silver. Wall rock alteration is characterized by narrow (220°C. Kaolinite occurring with the late sulfide-rich veinlet stage indicates pH 315°, whereas strike directions of <315° are predicted with an induced dextral strike-slip movement. The components of the structural model appear to be present on a regional scale and are not restricted to the San José district.

  2. A mathematical model; Un modelo matematico para el comportamiento de la radiosensibilidad medida con la viabilidad huevo-adulto de Drosophila melanogaster y D. simulans de Laguna Verde, Veracruz

    Energy Technology Data Exchange (ETDEWEB)

    Castillo M, J.A.; Pimentel P, A.E. [Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

    2000-07-01

    This work presents the results to define the adult egg viability behavior (VHA) of two species, Drosophila melanogaster and D. simulans obtained with the mathematical model proposed, as well as the respective curves. The data are the VHA result of both species coming from the vicinity of the Laguna Verde Nuclear Power plant (CNLV) comprise a 10 years collect period starting from 1987 until 1997. Each collect includes four series of data which are the VHA result obtained after treatment with 0, 4, 6 and 8 Gy of gamma rays. (Author)

  3. Huevos enriquecidos con omega 3

    OpenAIRE

    Viteri, Evelyn

    2013-01-01

    El presente trabajo es una contribución al estudio de usos de ingredientes no tradicionales; harina de algas, Macrocystis pyrifera, y la inclusión en raciones para aves de postura destinado a aumentar la concentración de omega 3 del huevo. Objetivo: Evaluar en la alimentación de la gallina la inclusión de harina de alga marina Macrocystis pyrifera con el fin de aumentar el valor de omega 3 en el huevo, y el grado de aceptación de un producto elaborado con el mismo en estudiante...

  4. PATATAS Y HUEVOS OSMÓTICOS

    Directory of Open Access Journals (Sweden)

    Josep Corominas

    2010-01-01

    Full Text Available Para ilustrar el fenómeno de la ósmosis se presentan dos experiencias sencillas que pueden realizarse con materiales cotidianos (patatas, huevos, agua, sal, vinagre..., tanto a nivel cualitativo como cuantitativo.

  5. huevo de tortuga lora (lepidochelys olivacea

    Directory of Open Access Journals (Sweden)

    M\\u00F3nica Pereira-Zamora

    2007-01-01

    Full Text Available Penetración de Vibrio mimicus a través de la cáscara del huevo de tortuga lora (Lepidochelys olivacea. El objetivo de esta investigación consistió en determinar la capacidad de penetración del Vibrio mimicus a través de la cáscara del huevo. La investigación se realizó en el Centro Nacional de Ciencia y Tecnología de Alimentos en el año 2000. Se inoculó la superfi cie de la cáscara con la bacteria y se procedió a incubar las muestras por 72 horas a 25ºC. Después de este período se observaron las muestras bajo el microscopio electrónico. Los resultados obtenidos demuestran que el Vibrio mimicus se reproduce en la superfi cie externa de la cáscara del huevo de tortuga lora, y no es capaz de penetrarla después de las 72 horas de incubación a 25ºC. Por lo tanto, cualquier tratamiento que se aplique con el fi n de reducir la contaminación con el vibrio y mejorar la inocuidad de los huevos, debe aplicarse en su exterior.

  6. Contenido de minerales y ácidos grasos omega-3 en huevos de gallinas ponedoras, alimentadas con harina de algas (Ulva spp.)

    OpenAIRE

    Guevara Matute, Jadiyi Martha Cecilia

    2015-01-01

    Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Tecnología de Alimentos El uso de las algas se está revalorizando continuamente, por la creciente demanda de productos naturales con propiedades funcionales. Con la finalidad de evaluar el efecto del uso de la harina de Ulva spp. sobre el contenido de minerales y de ácidos grasos n-3 en huevos de gallinas ponedoras, se preparó harina con esta alga verde de origen marino, la cual presentó buen tenor de proteína...

  7. Mesa Verde Archaeoastronomy

    Science.gov (United States)

    Munson, Gregory E.

    Mesa Verde archaeoastronomy has been studied for over 100 years through academic research. Investigators have excavated, stabilized, and documented the major dwellings in Mesa Verde National Park. Evidence for astronomical orientation and alignment was found in Cliff Palace and Sun Temple. The level of documentation increased with each new research project. With good documentation practices, together, the research has shown that the cultures of the Mesa Verde were advanced in their social organization and use of astronomy. Consultation with Native American tribal leaders will add significant background to the depth of knowledge that their ancestors possessed.

  8. EFECTO DE DENSIDAD POBLACIONAL DE HUEVOS SOBRE VIABILIDAD Y TIEMPO DE DESARROLLO DE Drosophila melanogaster (DROSOPHILIDAE

    Directory of Open Access Journals (Sweden)

    OSORIO JULIO

    2008-08-01

    Full Text Available Para estimar el efecto de la densidad poblacional de huevos sobre la viabilidad huevoadulto de Drosophila melanogaster se realizaron tres tratamientos en frascos con medio de cultivo agar-banano: a densidad de 10, 50 y 90 huevos. La variable de respuesta fue la proporción de individuos adultos emergidos desde la aparición del primer imago hasta 15 días después de la siembra. Las viabilidades huevo-adulto promedio fueron 0,320, 0,338 y 0,328 para las densidades de 10, 50 y 90 huevos respectivamente. No se evidenciaron diferencias significativas entre los tres tratamientos (p>0.05. Por lo tanto, no se detectó en este estudio influencia de la densidad poblacional de huevos sobre la viabilidad huevo-adulto. Probablemente debido a que la proporción entre el número de huevos y la cantidad de medio fue suficientemente alta para no generar competencia en otros estadios del desarrollo huevo/adulto.

  9. Varicose Veins

    Science.gov (United States)

    Varicose veins are swollen, twisted veins that you can see just under the skin. They usually occur in ... of the body. Hemorrhoids are a type of varicose vein. Your veins have one-way valves that help ...

  10. Frecuencia con que se encuentran los huevos infecundos de ascárides lumbricoides

    OpenAIRE

    Groot, Hernando

    2011-01-01

    El hecho de que con alguna frecuencia, al hacer el examen microscópico de las materias fecales de un individuo parasitado con Ascaris lumbricoides, se encuentren huevos sin fertilizar de este gusano, puede ser una causa de error en el diagnóstico de dicho parásito para el principiante, o para el microscopista poco avisado.Efectivamente, estos huevos, se apartan bastante de la morfología tan característica del huevo de áscaris fecundado, y aun cuando una pequeña práctica permite reconocerlos e...

  11. Puestas "de dos huevos" en la Pardela Grande" (Calonectris diomedea )

    OpenAIRE

    Mougin, Jean Louis

    2001-01-01

    Las puestas "de dos huevos" representaron el 0.52% del número total de puestas en la población de la Pardela Grande (Calonectris diomedea) de Selvagem Grande. Las puestas "de dos huevos" se encontraron principalmente en nidos atractivos ocupados por parejas reproductivas de poca experiencia. El primer huevo pareció haber sido puesto mayormente por hembras solitarias que, aprovechando el éxodo pre-postura, entran al nido temporariamente vacío de una pareja joven y de poca experiencia. Estas he...

  12. Spider Veins

    Science.gov (United States)

    ... How to Choose the Best Skin Care Products Spider Veins Treatment Options Learn more about treatment options ... severe venous disease. What you should know about spider veins The exact cause of spider veins is ...

  13. Desarrollo embrionario-larval del pez tropical Hemirhamphus brasiliensis (Beloniformes: Hemirhamphidae a partir de huevos recolectados del medio natural

    Directory of Open Access Journals (Sweden)

    Jesús Rosas

    2008-09-01

    Full Text Available Se describe la formación del embrión y el desarrollo larval del pez Hemirhamphus brasiliensis Linnaeus, 1758, a partir de huevos en estado de mórula, recolectados en el alga parda Sargassum sp. Los huevos eran esféricos con un diámetro de 1923.54 ±72.35 µm, con numerosos filamentos coriónicos y estrías en su superficie. Durante las primeras 48 h, el embrión desarrolló la vesícula cefálica, los miomeros y el corazón, el cual se ubicó en el exterior de cuerpo impulsando sangre incolora, la cual se pigmentó de rojo posteriormente. Antes de la eclosión se desarrollaron el riñón, estómago, hígado y la vesícula biliar, las aletas pectorales, cuatro pares de arcos branquiales y la boca. Las larvas eclosionaron a la 114 h, presentando el cuerpo robusto en forma de torpedo, verde-amarillo con melanoforos dendriformes. Al nacer ingirieron metanauplios de Artemia. A las 72 h después de la eclosión se observó el esbozo de la aleta pélvica y a las 240 h se completó la metamorfosis.Embrionary-larval development of the tropical fish Hemirhamphus brasiliensis (Beloniformes: Hemirhamphidae from eggs collected in the wild. The embryo formation and larval development of Hemirhamphus brasiliensis Linnaeus, 1758 (Pisces: Hemirhamphidae is described from morula stage eggs collected on Sargassum sp. Thalii in the field (10°50’55.2" N y 64°09’467" W. The eggs were spherical, 1 923.54 ±72.35 µm diameter with several corionic filaments, and are striated. During the first 48 h the embryo developed cephalic vesicle, miomers, and a heart located on the external body surface, beating strongly and circulating colorless blood which became pigmented red later. Before hatching, the larva developed kidney, gut tract, liver and biliar vesicle, pectoral fins, four pairs of gill arches and the mouth. The larva hatched at 114 h, the body was torpedo-shaped, yellow-green, with several dendriform melanophores; the pelvic fin was observed 72 h post

  14. Evaluación sensorial de huevos de codorniz en conserva y composición nutricional

    OpenAIRE

    José Fernando González Sánchez; Aideé Hernández Unzón

    2011-01-01

    El objetivo de este estudio fue evaluar la aceptabilidad de los huevos de codorniz en escabeche y determinar la composición nutricional de huevo de codorniz. Se emplearon cinco soluciones diferentes para conservar los huevos de codorniz y se aplico una prueba de aceptabilidad a los posibles consumidores. Se empleo una escala hedónica de siete puntos para evaluar la aceptación de los huevos: de excelente (+3) a detestable (-3). Se utilizaron un total de 200 jueces no calificados divididos en 4...

  15. Primer registro de depredación de huevos de anuros por sanguijuelas en Argentina

    Directory of Open Access Journals (Sweden)

    Gabriela Soler

    2014-05-01

    Full Text Available La depredación de huevos por sanguijuelas es una de las causas de mortalidad temprana de anuros. En la mayoría de los casos se trata de especies de sanguijuelas que actúan como depredadores ocasionales, atacando incluso a adultos o renacuajos; sin embargo se han registrado especies altamente adaptadas en la depredación de huevos de anfibios representando estos su único alimento. En la región Neotropical estas observaciones son muy escasas. En Argentina, aún no existen citas publicadas asociadas a este tipo de interacción depredador-presa. En la presente nota se reportan los primeros datos de depredación de huevos de anuros por sanguijuelas (Oxyptychus sp. en las Sierras de Tandilla en Argentina.

  16. Tecnologia para el procesamiento y obtencion de lactato de calcio a partir de cal y cascara de huevo de gallina

    National Research Council Canada - National Science Library

    Pacheco, Anibal; Calderon, Segundo; Palomino, Miriam; Chambi, Cledy

    2009-01-01

    ... (CIBIN), Facultad de Medicina. Material biologico: Piedra caliza y cascara de huevo Intervenciones: El presente trabajo se sustenta en el modelo fisicoquimico para la obtencion de minerales con las modificaciones del caso. Resultados: Al someter la piedra caliza y la cascara de huevo a T[grados] de 500-600[grados]C, por 12 horas, se obtuvo oxido...

  17. Cambios estructurales en cáscaras de huevos de Caiman latirostris

    OpenAIRE

    Simoncini, Melina Soledad; Fernández, Mariela; Iungman, Josefina Luciana

    2017-01-01

    El éxito reproductivo de Caiman latirostris puede estar afectado por las modificaciones que se producen en las cáscaras durante el período de incubación de los huevos. Resulta importante conocer las estructuras que conforman la cáscara y los cambios que en ella ocurren. En este estudio se presentan descripciones de la estructura (forma y tamaño del huevo, ornamentación, espesor y estructura de la cáscara, tipo de unidades de cáscara, densidad y tamaño de poros), y evidencias de los cambios pr...

  18. El alga Sargassum spp. como alternativa para reducir el contenido de colesterol en el huevo

    OpenAIRE

    Silvia Carrillo; Bahena, A.; Casas, M.; M.E. Carranco; C.C. Calvo; E. Ávila; F. Pérez-Gil

    2012-01-01

    Para determinar el efecto que tiene en el contenido de colesterol del huevo la adición del alga marina (AM) Sargassum spp. en la dieta de gallinas ponedoras, se utilizaron 225 gallinas Leghorn, de 19 semanas de edad, distribuidas al azar en cinco tratamientos (0, 2, 4, 6 y 8 % del alga marina). El experimento tuvo una duración de cinco semanas, durante las que se registraron las variables productivas. La calidad física se evaluó en 75 huevos por tratamiento. Se tomaron 35 piezas de cada trata...

  19. Congelación de semen de carnero en pellets con los diluyentes Tris-glucosa-yema de huevo o Lactosa-yema de huevo

    Directory of Open Access Journals (Sweden)

    F. I. Brito

    2004-01-01

    Full Text Available El objetivo del trabajo fue comparar la recuperación de la motilidad al descongelar el semen congelado en pellets utilizando el diluyente Tris glucosa-yema de huevo o Lactosa-yema de huevo. Se obtuvieron 30 eyaculados de nueve carneros por medio de una vagina artificial y se evaluó el volumen, la motilidad progresiva, la concentración y la morfología espermática. Cada eyaculado se dividió en dos partes, una de ellas se diluyó con Tris-glucosa yema de huevo y la otra con Lactosa yema de huevo, de manera que la dilución final contuviera 100 x 106 de espermatozoides en 0.1 ml. Los pellets se prepararon goteando 0.1 ml del semen diluido en perforaciones realizadas en hielo seco. Se evaluó la motilidad inicial, después de diluir y al descongelado. Se evaluó la motilidad de cinco pellets de cada eyaculado preparado con cada diluyente (300 en total. Los datos se analizaron estadísticamente mediante análisis de varianza, considerando la motilidad progresiva como variable dependiente y transformando al arcoseno los valores expresados en porcentaje. No se encontraron diferencias en la motilidad inicial de los eyaculados diluidos con tris o Lactosa (P>0.05. La motilidad espermática al descongelar fue significativamente mayor (P<0.05 en el semen diluido con Lactosa-yema (45.8%, que con Tris-glucosa-yema (40.2%

  20. Tecnología de las inmunoglobulinas de yema de huevo

    OpenAIRE

    Terzolo, Horacio Raúl

    2009-01-01

    El objetivo de esta presentación es introducir una nueva tecnología basada en la utilización de las inmunoglobulinas o anticuerpos de yema de huevo. Trabajo galardonado con el Premio "Fundación Dr. Alfredo Manzullo", versión 2007 Academia Nacional de Agronomía y Veterinaria

  1. Extracción y aplicaciones alimentarias de membranas de cáscaras de huevo

    OpenAIRE

    2015-01-01

    Caracterización físico-química de la membrana de la cáscara de huevo, seguida del estudio y desarollo de posibles aplicaciones de la membrana en diversos campos, entre los que destaca la formación de geles y la retención de cobre y proteínas.

  2. Alérgenos del huevo: digestión gastrointestinal, inmunorreactividad y mecanismos de desensibilización

    OpenAIRE

    Martos, Gustavo

    2012-01-01

    La alergia al huevo es una de las causas más frecuentes de hipersensibilidad inmediata a los alimentos en los países industrializados, sobre todo durante la infancia. La ubicuidad del huevo en los alimentos supone un gran riesgo de ingestión accidental para las personas alérgicas, que deben llevar una dieta muy restringida. En la presente Tesis Doctoral, se estudia la digestibilidad de distintos alérgenos del huevo empleando un modelo in vitro de digestión gastrointestinal fisiológicamente re...

  3. Alérgenos del huevo: digestión gastrointestinal, inmunorreactividad y mecanismos de desensibilización

    OpenAIRE

    Martos, Gustavo

    2012-01-01

    La alergia al huevo es una de las causas más frecuentes de hipersensibilidad inmediata a los alimentos en los países industrializados, sobre todo durante la infancia. La ubicuidad del huevo en los alimentos supone un gran riesgo de ingestión accidental para las personas alérgicas, que deben llevar una dieta muy restringida. En la presente Tesis Doctoral, se estudia la digestibilidad de distintos alérgenos del huevo empleando un modelo in vitro de digestión gastrointestinal fisiológicamente re...

  4. Huertos urbanos: el verde ciudadano

    OpenAIRE

    Espinosa Seguí, Ana

    2013-01-01

    Los huertos urbanos reutilizan fragmentos de ciudad degradados y se los ofrecen a los ciudadanos, embelleciendo la ciudad y dándole una función social y ecológica al territorio. Han estado tradicionalmente relacionados con períodos de crisis urbana, ecológica y económica. Es necesaria una revisión de la evolución de estos espacios verdes en la ciudad.

  5. Huertos urbanos: el verde ciudadano

    OpenAIRE

    Espinosa Seguí, Ana

    2013-01-01

    Los huertos urbanos reutilizan fragmentos de ciudad degradados y se los ofrecen a los ciudadanos, embelleciendo la ciudad y dándole una función social y ecológica al territorio. Han estado tradicionalmente relacionados con períodos de crisis urbana, ecológica y económica. Es necesaria una revisión de la evolución de estos espacios verdes en la ciudad.

  6. NIVELES DE MERCURIO EN HUEVOS, EMBRIONES Y NEONATOS DE Trachemys callirostris (TESTUDINES, EMYDIDAE

    Directory of Open Access Journals (Sweden)

    BEATRIZ RENDÓN-VALENCIA

    2014-01-01

    Full Text Available Cuantificamos la concentración total de mercurio en cáscaras, yemas y embriones de 16 nidos de hicotea (Trachemys callirostris. Los nidos fueron colectados en diferentes estadios de desarrollo embrionario. No hubo una correlación entre el tiempo estimado desde el desove y los niveles de mercurio en los huevos, sugiriendo que el metal no fue absorbido del substrato, sino que probablemente éste fue transferido a los huevos durante el proceso de foliculogénesis en las hembras reproductivas, las cuales bioacumularon el mercurio de fuentes ambientales. La concentración promedio de mercurio fue mayor en los embriones que en las cáscaras o yemas, indicando que los embriones también bioacumulan el metal presente en otros tejidos del huevo. La variación de la concentración de mercurio dentro de una misma nidada fue relativamente alta. Las concentraciones de mercurio en las yemas no estuvieron asociadas con ninguna de las medidas de fitness que fueron evaluadas (éxito de eclosión, tamaño inicial de los neonatos y tasas de crecimiento de los juveniles en el primer mes. Después de cinco meses de mantenimiento en cautiverio, en un ambiente libre de mercurio, 86 % de los juveniles había eliminado completamente este metal de sus tejidos.

  7. Varicose vein - noninvasive treatment

    Science.gov (United States)

    Sclerotherapy; Laser therapy - varicose veins; Radiofrequency vein ablation; Endovenous thermal ablation; Ambulatory phlebectomy; Transilluminated power phlebotomy; Endovenous laser ablation; Varicose vein ...

  8. 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 an...

  9. Varicose vein stripping

    Science.gov (United States)

    ... vein stripping; Venous reflux - vein stripping; Venous ulcer - veins Images Circulatory system References American Family Physician. Management of varicose veins. www.aafp.org/afp/2008/1201/p1289.html . ...

  10. Deep Vein Thrombosis

    Science.gov (United States)

    Deep vein thrombosis, or DVT, is a blood clot that forms in a vein deep in the body. Most deep vein ... the condition is called thrombophlebitis. A deep vein thrombosis can break loose and cause a serious problem ...

  11. Evaluación sensorial de huevos de codorniz en conserva y composición nutricional (Sensory evaluation of pickled quail eggs and nutritional composition)

    OpenAIRE

    González Sánchez José Fernando; Hernández Unzón Aideé

    2011-01-01

    ResumenEl objetivo de este estudio fue evaluar la aceptabilidad de los huevos de codorniz en escabeche y determinar la composición nutricional de huevo de codorniz.SummaryThe aim of this study was to evaluate the acceptability of pickled quail eggs and determine the nutritional composition of quail egg

  12. Evaluación sensorial de huevos de codorniz en conserva y composición nutricional (Sensory evaluation of pickled quail eggs and nutritional composition

    Directory of Open Access Journals (Sweden)

    González Sánchez José Fernando

    2011-08-01

    Full Text Available ResumenEl objetivo de este estudio fue evaluar la aceptabilidad de los huevos de codorniz en escabeche y determinar la composición nutricional de huevo de codorniz.SummaryThe aim of this study was to evaluate the acceptability of pickled quail eggs and determine the nutritional composition of quail egg

  13. Producción y comerdatización de huevos de codorniz

    OpenAIRE

    Ruales Navarrete, Mary Esperanza

    2012-01-01

    74 hojas : ilustraciones, 29 x 21 cm + CD-ROM 4564 El estudio de los huevos .de codorniz se realizapara ,brindar un producto-.de buena calidad llegando al mercado ecuatoriano que desconoce, que contiene todos los elementos nutritivos que requiere el hombre, fácil digestibilidad de sus albúminas y grasas constituyen un elemento de alto valor en la dieta humana para alimentar a nuestra población, si se introduce masivamente, se podría tener un producto de alto valor nutritivo, para alimentar...

  14. Viabilidad de huevos y modelo de jaula para la cría artificial masiva de Anastrepha fraterculus (Diptera: Tephritidae

    Directory of Open Access Journals (Sweden)

    JULIANA GARCÍA

    2011-01-01

    Full Text Available El objetivo del presente trabajo fue determinar la viabilidad de huevos y el modelo de jaula apropiada para la cría artificial masiva de Anastrepha fraterculus (Wiedemann. Los resultados muestran que el periodo de máxima oviposición ocurre durante los primeros 10 días en jaulas modelo Mediana, lo cual permite obtener el volumen de huevos necesario para alimentar el pie de cría de A. fraterculus en una cría masiva. Considerando que se encontró relación positiva entre el volumen de huevos ovipositados y el porcentaje de eclosión de huevos, en un periodo de 21 días de colecta, este periodo coincide además con los valores de eclosión más altos. Entre los modelos de jaulas evaluadas: Mediana, Grande y Mission; el modelo Mediana mostró los mejores resultados al evaluar el número de huevos/hembra/día con un valor promedio de 11,4. La jaula que mostró menores resultados fue el modelo Mission, con un valor promedio de 4,6 huevos/hembra/día. Las jaulas grandes mostraron valores menores a las jaulas Medianas, pero las diferencias fueron no significativas. Los buenos valores registrados en las jaulas Medianas posiblemente se deban a la estructura de la jaula, que presentó la cara interna dividida en muchos compartimientos, lo cual mejora la distribución de las moscas adultas y previene la mortalidad temprana por hacinamiento en la base o en el techo de la jaula.

  15. Productividad y calidad del huevo de gallinas con niveles crecientes de harina de semilla de calabaza (Cucurbita maxima

    Directory of Open Access Journals (Sweden)

    Yordan Martínez Aguilar

    2012-01-01

    Full Text Available Un total de 160 gallinas ponedoras White Leghorn (Híbrido L-33 en pleno pico de potura, se ubicaron durante 91 días según diseño completamente aleatorizado, para evaluar el comportamiento productivo y la calidad del huevo. Se utilizaron cuatro tratamientos 0, 33, 66 y 100 g/kg de harina de semilla de calabaza, sustituyendo totalmente el aceite vegetal y parcial la torta de soya. Se tuvieron 20 repeticiones por tratamiento. No se evidenció morbilidad y mortalidad en las gallinas ponedoras con la inclusión de la semilla en las dietas. Además no se detectaron diferencias significativas (P>0.05 entre tratamientos para la producción de huevos, viabilidad, consumo de energía metabolizable y nutrientes (excepto para fibra cruda y extracto etéreo, peso del huevo, altura de la clara densa, altura de la yema, grosor de la cáscara, huevos no aptos y calidad sensorial del huevo (sabor, olor y textura. Para los tratamientos con 66 y 100 g/kg de harina de semilla de calabaza se observó un aumento en el peso final de las gallinas en 61 y 66 g, respectivamente en comparación con el tratamiento testigo. Los resultados obtenidos permiten recomendar la inclusión de hasta 100 g/kg de harina de semilla de calabaza en las dietas de gallinas ponedoras, sin alterar el comportamiento productivo y la calidad del huevo.

  16. Escuela Superior de Palos Verdes

    Directory of Open Access Journals (Sweden)

    Neutra, Richard J.

    1965-02-01

    Full Text Available Before initiating the building operations for the «Palos Verdes» School, the site was divided into two large horizontal surfaces, at different levels. The lower one served to accommodate the playing fields, a car park, the physical training building, and shop and ancillary buildings. On the higher of these two surfaces, and to the West of the access road, there is a car park and also the building and plot of ground devoted to agricultural technology, as well as the literary studies and general purpose buildings. As a complement to these, there is a series of blocks, arranged in parallel rows, which house the administrative offices, the art school, the craft's school, the general classrooms, and those devoted to higher education. The fascinating aspect of this school is the outstanding penetration of the architect's mind into the essential function of the project. Its most evident merit is the sense of comradeship and harmony that permeates the whole architectural manifold.Antes de construir el complejo escolar «Palos Verdes» se comenzó por crear, en el terreno, dos grandes mesetas a niveles diferentes. Sobre el inferior se organizaron: los campos de juegos, de deportes, un aparcamiento, el edificio para educación física y los destinados a tiendas y servicios. Sobre la meseta superior, al oeste de la vía de acceso, se dispuso un aparcamiento y el edificio y campo para adiestramiento agrícola; al este, otro aparcamiento, el edificio dedicado a materias literarias, y el destinado a usos múltiples. Completan las instalaciones de la escuela una serie de bloques paralelos: la administración, la escuela de arte, las clases de trabajos manuales, las aulas de enseñanzas generales, y las de los cursos superiores. Lo fascinante de este complejo escolar es la perfecta y magistral compenetración del arquitecto con el tema proyectado, y su mayor mérito, la sensación de cordialidad y armonía con el ambiente.

  17. Variación en el tamaño de los huevos en garzas (Aves: Ardeidae que anidan en la ciénaga de Birama, Cuba

    Directory of Open Access Journals (Sweden)

    Dennis Denis Ávila

    2015-03-01

    Full Text Available Las variaciones intranidada de la talla de los huevos de las aves responden a numerosos factores ecológicos y de la historia evolutiva de las especies. En las zancudas aunque se ha descrito una disminución de la talla con el orden de puesta, los trabajos comparativos entre especies son escasos. En este trabajo se describen los patrones de variación del tamaño de los huevos de nueve especies de garzas (Aves: Ardeidae nidificantes en la ciénaga de Birama, Cuba. Los patrones se describen a partir de las dimensiones de 3 142 huevos, pertenecientes a 1 875 nidos de Butorides virescens, Bubulcus ibis, Ardea alba, Nycticorax nycticorax, Nyctanassa violacea y cuatro especies de Egretta, tomados en la ciénaga de Birama, Cuba, entre 1998 y 2006. Los huevos representaron entre el 4.9-10% del peso adulto y tuvieron un coeficiente de variación del volumen entre el 6-9%. No existió una relación general consistente entre especies entre el tamaño de puesta y las dimensiones de los huevos. El volumen promedio del huevo tiende a disminuir con el orden de puesta, pero no es estadísticamente detectable en Butorides y Bubulcus. El último huevo fue entre un 0.2 y un 15% menor que el primero, disminuyendo su volumen relativo con la talla del primer huevo. La asimetría intranidada es menos marcada en E. thula y prácticamente fluctuante alrededor de cero en Bubulcus. En general, la talla del huevo solo puede predecir el orden de puesta para el último huevo en nidadas mayores de dos con un 72.4% de confianza.

  18. Metodo para montaje permanente de huevos de helmintos enteroparasitos Definitive preservation of helminthic eggs

    Directory of Open Access Journals (Sweden)

    Victor Muñoz

    1990-04-01

    Full Text Available Se comunican resultados obtenidos empleando Medio de Hoyer para el montaje de huevos de helmintos enteroparásitos, destinado a preparaciones para colecciones docentes y/o de investigación. La utilización de esta técnica en muestras fecales conteniendo huevos de A. lumbricoides, T. trichiura, Uncinaria sp., Taenia sp., Diphyllobothrium sp., H. nana, H. diminuta y F. hepática, permitió la correcta observación de ellos en lecturas iniciadas a las 24 horas y mantenidas hasta 180 días después.The results using the Hoyer method for examining eggs of helminths enteroparasites are presented. This method is particularly swited for teaching and on research purposes. Using this technique in fecal sample containing eggs of A.lumbricoides, T. trichiura, Uncinaria sp., Taenia sp., Diphyllobothrium sp., H. nana, H. diminuta and F. hepática allowed the correct identification of then after 24 hours up to 180 days after the samples were obtained.

  19. 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

  20. Alergia a la leche y al huevo: diagnóstico, manejo e implicaciones en América Latina

    Directory of Open Access Journals (Sweden)

    Jorge Sánchez

    2014-03-01

    En el presente artículo presentamos una revisión del manejo de la alergia alimentaria a la leche y al huevo útil para el personal de salud de todos los niveles, así como algunas consideraciones de los factores presentes en los países latinoamericanos.

  1. Hospitales reformando al mundo verde

    Directory of Open Access Journals (Sweden)

    Sandra Milene Rojas-Criollo

    2016-12-01

    Full Text Available Introducción: factores ambientales como el cambio climático, el calentamiento global, el mal uso del suelo y del agua, la mala administración de los recursos naturales, la contaminación del aire en espacios abiertos y cerrados, el crecimiento urbano y la industrialización han ocasionado cambios en los procesos naturales del planeta; para la Organización Mundial de la Salud constituyen una barrera significativa que impide alcanzar los objetivos del milenio y del desarrollo sostenible, haciendo cada vez más grave su aplicación y generando un ambiente hostil para la vida de las personas. Metodología: investigación documental, descriptiva, con enfoque cualitativo. Se realizó búsqueda en las bases de datos Ebsco, Proquest, Scielo, Elsevier, etc., con descriptores en inglés y español. Se clasificó los artículos por similitudes, autores y definiciones; se agruparon 60 artículos en una matriz y, posteriormente, se analizaron y se integraron los conceptos para luego categorizarlos. Conclusiones: es de gran relevancia el conocimiento sobre hospitales verdes, ya que son empresas que promueven la salud pública y la reducción del impacto ambiental, además de la disminución de los índices de morbilidad y mortalidad. El personal de salud tiene un papel importante para desarrollar e implementar estas actividades en beneficio del ambiente y las personas

  2. Portal Vein Thrombosis

    OpenAIRE

    Hakan Demirci

    2016-01-01

    Portal vein thrombosis is an important cause of presinusoidal portal hypertension. Portal vein thrombosis commonly occurs in patient with cirrhosis, malignancy and prothrombotic states. Patients with acute portal vein thrombosis have immediate onset. Patients with chronic portal vein thrombosis have developed portal hypertension and cavernous portal transformation. Portal vein thrombosis is diagnosed with doppler ultrasound, computed tomography and magnetic resonance imaging. Therapy with low...

  3. Focus on Varicose Veins

    Science.gov (United States)

    ... veins, which are the visible purple or greenish-blue veins that appear in our legs. Spider veins or teleangiectesias are tiny veins that you ... reduce leg swelling and decrease the risk of blood clots. Prescription ... sclerosing solution into spider, reticular or varicose veins. This is a minimally ...

  4. Impuestos ambientales y Reforma Fiscal Verde

    OpenAIRE

    Casado Conde, Ander

    2016-01-01

    [ES] Este trabajo tiene como objetivo explicar el concepto de impuesto ambiental y analizar la situación de la fiscalidad ambiental tanto en los países de la OCDE como en España. Además, también se explican los conceptos de reforma fiscal verde y Doble Dividendo y se ofrece un resumen de las diferentes reformas fiscales verdes llevadas a cabo en varios países a lo largo de las ultimas décadas.

  5. RETENCIÓN DE HUEVOS EN HEMBRA DE JABOTÍ-PIRANGA (Geochelone carbonaria - Spix, 1824 EN CAUTIVERIO

    Directory of Open Access Journals (Sweden)

    Fabiana Rodrigues da Silbeira, M.V

    2009-12-01

    Full Text Available Un Jabotí-Piranga adulto (Geochelone carbonaria, hembra, con peso de 3.5 kg ingresó por consulta en la escuela clínica “Dr. Cataldi Luiz de Souza”, del “Centro Universitário Serra dos Órgãos - Teresopolis, Río de Janeiro”, con historia de retención de huevos. En la evaluación clínica y radiológica, se encontró tres huevos en posiciones normales. Teniendo en cuenta la temporada de reproducción, se aconsejó la observación del animal. Después de un año, dicho animal regresó a la clínica por no haber todavía expulsado los huevos. Tras nuevo examen radiográfico se observó que los 3 huevos continuaban en la misma posición. A continuación, se aplicó 0.03 ml de oxitocina por vía subcutanea (10 UI x ml, en el apéndice anterior del animal. Tres horas después de la aplicación de la hormona, el animal expulsó los huevos naturalmente, sin la necesidad de una intervención quirúrgica, con lo que se puede sospechar de la eficacia de la aplicación de oxitocina para este procedimiento en jabotí Piranga.

  6. Spider Vein Removal

    Science.gov (United States)

    Spider veins: How are they removed? I have spider veins on my legs. What options are available ... M.D. Several options are available to remove spider veins — thin red lines or weblike networks of ...

  7. Sclerotherapy of Varicose Veins and Spider Veins

    Science.gov (United States)

    ... you as to whether the procedure was a technical success when it is completed. Your interventional radiologist ... Varicose Veins) Phlebectomy of Varicose Veins Contrast Materials Anesthesia Safety Sponsored by Please note RadiologyInfo.org is ...

  8. Vein Problems Related to Varicose Veins

    Science.gov (United States)

    ... telangiectasias. Spider veins involve the capillaries, the smallest blood vessels in the body. Spider veins often appear on the legs and face. They're red or blue and usually look like a spider web or ...

  9. 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)

  10. Ultraestructura de la cáscara de huevos eclosionados y no eclosionados de Kinosternon angustipons (Testudinata: Kinosternidae

    Directory of Open Access Journals (Sweden)

    R. Acuña-Mesén

    2001-12-01

    Full Text Available Se describe la ultraestructura de la cáscara de los huevos de Kinosternon angustipons y se compara con la de K. leucostomum y K. scorpioides. Esta investigación se realizó con cuatro huevos provenientes de tortugas en cautiverio, para una muestra de 30 secciones analizadas en el Microscopio Electrónico de Barrido. Está constituida por tres capas: la cutícula o externa, la calcárea o intermedia y la testácea o interna. La comparación entre huevos eclosionados y no eclosionados de K. angustipons muestra similitudes en cuanto a su superficie externa que es plana, unidades abanicadas y fibras proteicas superpuestas al azar. Los huevos no eclosionados se diferencian por la presencia de estructuras esponjoides y mayor porosidad externa. Los espacios con forma de punta de lanza y el adelgazamiento de las fibras proteicas son típicos en la capa calcárea y membrana testácea de los huevos eclosionados. La evidencia ultraestructural muestra que durante el desarrollo embrionario disminuye el grosor de la cáscara y, además que, la de los huevos no eclosionados de K. angustipons es más gruesa que la de los otros dos kinostérnidos costarricensesThe ultrastructure of eggshells of Kinosternon angustipons is described and compared with the ones of K. leucostomum and K. scorpioides. Four eggs from captive turtles (30 sections were studied with Scanning Electron Microscopy (SEM. The shell has three layers: cuticle or external, calcareous or intermediate and testacean or internal. Hatched and non hatched eggs have similar characteristics in their external surface: fanned units and proteic fibers superposed at random. They differ in the presence of spongelike structures and more external porosity in non hatched eggs. The intermediate and testacean layers of the hatched eggs have lance point like spaces and are thin in the proteic fibers. The ultrastructural evidence shows that during the embryonic development the thickness of the peel decreases. Non

  11. Portal Vein Thrombosis

    Directory of Open Access Journals (Sweden)

    Hakan Demirci

    2016-01-01

    Full Text Available Portal vein thrombosis is an important cause of presinusoidal portal hypertension. Portal vein thrombosis commonly occurs in patient with cirrhosis, malignancy and prothrombotic states. Patients with acute portal vein thrombosis have immediate onset. Patients with chronic portal vein thrombosis have developed portal hypertension and cavernous portal transformation. Portal vein thrombosis is diagnosed with doppler ultrasound, computed tomography and magnetic resonance imaging. Therapy with low molecular weight heparin achieves recanalization in more than half of acute cases.

  12. Aceptabilidad de empanizados enriquecidos con harina de pota (Dosidicus gigas), huevo de codorniz (Coturnix coturnix) y pimiento amarillo (Capsicum annuum)

    OpenAIRE

    Guerrero Hurtado, Emma Del Rosario; Palomino Pezzutti, Ricardo Ramiro; Tamariz Grados, Nelly Norma; Cajaleón Asencios, Delia Haydee; Dextre Mendoza, Rodolfo Willian; Carreño Mundo, Humberto

    2015-01-01

    Objetivo: Evaluar la aceptabilidad de empanizados enriquecidos con harina de pota (Dosidicus gigas), huevo de codorniz (Coturnix coturnix) y pimiento amarillo (Capsicum annuum). Métodos: Optimizar una formulación de alimento listo para el consumo humano, conforme a requisitos: NTP NDECOPI: Harina de trigo, NTP 205. 027. 1996, NTP-CODEX STAN 166:2014 -Barritas, Porciones y Filetes de pescado empanizados o rebozados congelados. Resultados: El aroma, color y textura de los empanizados formula...

  13. En torno a La casa verde

    Directory of Open Access Journals (Sweden)

    Francisco Eladio Gómez Mejía

    1966-06-01

    Full Text Available A los treinta años, el escritor peruano Mario Vargas Llosa acaba de publicar su segunda novela maestra. Me refiero a La casa verde. Antes habían aparecido La huída (1952, pieza de teatro, el libro de cuentos Los jefes (1958 y su primera novela La ciudad y los perros (1962 . Treinta años que han bastado para colocarlo al frente de la novelística latinoamericana de vanguardia.

  14. QUÍMICA VERDE: UN NUEVO RETO

    Directory of Open Access Journals (Sweden)

    Nerlis Paola Pájaro Castro

    2011-01-01

    Full Text Available En la actualidad, existe un enorme deterioro del medio ambiente que ha generado la necesidad de buscar alternativas que conduzcan a la sostenibilidad ambiental. Una de estas herramientas es la ¿química verde¿, concepto que contempla el diseño de productos y procesos que reduzcan la generación de sustancias peligrosas y maximicen la eficiencia en la utilización de recursos materiales y energéticos. El empleo de tecnologías menos contaminantes, permitirá a las empresas químicas mitigar los efectos ambientales asociados a su actividad, reduciendo el consumo de materiales e incrementando la participación de recursos renovables. Para alcanzar estas metas, se han propuesto 12 principios básicos de química verde, aplicables en diferentes campos, tales como la medicina, la agricultura, la industria química y farmacéutica. Esta revisión detalla los principios y usos principales de la química verde, y su aplicación como una filosofía de trabajo para avanzar hacia un verdadero desarrollo sostenible.

  15. Actividad in vitro de los venenos de Lachesis muta y Bothrops atrox sobre la viabilidad y desarrollo embrionario de los huevos de Ascaris suum

    Directory of Open Access Journals (Sweden)

    Claudia Paredes

    2014-06-01

    Full Text Available Los venenos de serpientes son concentrados polienzimáticos cuya actividad biológica sobre algunas bacterias y protozoos ha sido comprobada. El objetivo principal del presente trabajo fue estudiar la actividad in vitro de los venenos totales de las serpientes Lachesis muta y Bothrops atrox sobre la viabilidad y el desarrollo embrionario de los huevos de Ascaris suum. Se emplearon los venenos totales en concentraciones de 2, 4, 8 y 16 mg/mL sobre huevos no embrionados y larvados in vitro. Se comparó la actividad de los venenos con la de otras sustancias como el hipoclorito de sodio al 5,25%, Albendazol (solución comercial y solución salina. Ambos venenos, en concentraciones de 4, 8 y 16 mg/mL, inhibieron la blastulación de estos huevos; hasta el sexto día de incubación; en cambio en concentración de 2 mg/mL la inhibición se dio hasta el cuarto día. Posteriormente iniciaron un proceso de embrionación aparentemente normal hasta la formación del estadio infectante. El veneno de B. atrox fue el que presentó el mayor efecto inhibitorio en concentración de 16 mg/mL. El hipoclorito de sodio destruyó el 100% de los huevos, mientras el albendazol ocasionó que los huevos iniciaran un proceso de segmentación anormal que originó su degeneración. Se concluye que los venenos de L. muta y B. atrox muestran actividad inhibitoria al inicio de la blastulación de los huevos de A. suum y no ejercen ningún efecto en los huevos larvados.

  16. Portal Vein Thrombosis

    Directory of Open Access Journals (Sweden)

    Ronny Cohen

    2015-01-01

    Full Text Available Portal vein thrombosis (PVT is the blockage or narrowing of the portal vein by a thrombus. It is relatively rare and has been linked with the presence of an underlying liver disease or prothrombotic disorders. We present a case of a young male who presented with vague abdominal symptoms for approximately one week. Imaging revealed the presence of multiple nonocclusive thrombi involving the right portal vein, the splenic vein, and the left renal vein, as well as complete occlusion of the left portal vein and the superior mesenteric vein. We discuss pathogenesis, clinical presentation, and management of both acute and chronic thrombosis. The presence of PVT should be considered as a clue for prothrombotic disorders, liver disease, and other local and general factors that must be carefully investigated. It is hoped that this case report will help increase awareness of the complexity associated with portal vein thrombosis among the medical community.

  17. 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...

  18. 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.

  19. MEZCLA DEL MARKETING VERDE: UNA PERSPECTIVA TEÓRICA

    Directory of Open Access Journals (Sweden)

    Thel Augusto Monteiro

    2015-01-01

    Full Text Available Este artículo aborda una perspectiva teórica al respecto de la mezcla de marketing y su aplicabilidad en las prácticas del marketing verde. Se trata de un estudio cualitativo, de carácter exploratorio, desarrollado a través del análisis de datos secundarios sobre el tema, utilizado como forma de unir la práctica y la teoría presentada por los autores analizados en el período comprendido entre 2003 y 2012. Se ofrece una breve síntesis sobre los conceptos de marketing verde, sus características, acciones y la presentación de la mezcla de marketing adaptada al marketing verde. Se destaca la contribución de este artículo sobre el marketing verde y el avance de este tema, proponiendo una mezcla de marketing adaptada al marketing verde.

  20. 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.

  1. Manejo de las areas verdes urbanas

    OpenAIRE

    Mark Sorensen; Valerie Barzetti; Kari Keipi; Williams, John R.

    1998-01-01

    El presente documento (ENV-109) busca dar al lector una base sólida sobre los beneficios, retos y enfoque para el desarrollo de programas sostenibles de manejo de áreas verdes urbanas. El objetivo es abarcar los elementos más importantes que deben ser considerados a la hora de iniciar los proyectos. Se incluye una variedad de estudios de casos de toda América Latina y de algunos países de otras regiones del mundo para ilustrar problemas reales y sus soluciones. Los casos e ideas presentados e...

  2. Suplementación de dietas de gallinas de postura comercial con aceites de pescado de diferentes grados de refinación: Efectos productivos en las aves y en la calidad organoléptica de los huevos Supplementation of commercial layer diets with different refined fish oils: Effects on layer performance and sensory egg quality

    National Research Council Canada - National Science Library

    S Cornejo; H Hidalgo; J Araya; J Pokniak

    2008-01-01

    Se evaluó el efecto sobre: porcentaje de postura (PP), consumo (CA), peso vivo (PV), peso del huevo (PH), masa de huevo (MH), conversión alimentaria (ECA), mortalidad (M), margen bruto (MB) y costo alimentario...

  3. Variables ambientales y abundancia de los huevos de Anchoa mitchilli (Pisces: Engraulidae en la laguna de Tamiahua, México

    Directory of Open Access Journals (Sweden)

    Carlos Díaz-Avalos

    2003-06-01

    Full Text Available Se estudió la abundancia de huevos de Anchoa mitchilli (Cuvier y Valenciennes 1848 en la laguna de Tamiahua, Ver. durante tres ciclos anuales (84-85, 85-86 y 86-87, para determinar zonas y épocas de alta concentración de huevos y su posible asociación con variables como temperatura, salinidad, transparencia y profundidad, así como con factores espacio-temporales como posición geográfica, época climática y el ciclo anual de recolecta. Para probar estadísticamente la asociación de la abundancia de huevos con dichos factores y variables se ajusto un Modelo Lineal Generalizado (MLG con error tipo Gamma. Los resultados del modelo ajustado sugieren que no todas las variables tienen un efecto significativo sobre la abundancia de huevos (t de Student, p >0.05. Las variables que resultaron estadísticamente significativas indican la presencia de un componente estacional y que la salinidad tiene un efecto condicional a la localidad. Las mayores abundancias promedio durante los tres ciclos de recolecta ocurrieron siempre durante el verano. Asimismo, debido a la presencia de interacciones significativas (t de Student, pEgg abundance of Anchoa mitchilli was studied in Laguna de Tamiahua, Veracruz during three annual cycles (84-85, 85-86 and 86-87. Our goal was to detect areas and seasons with high egg abundance and the possible association of such areas and seasons with covariates such as temperature, salinity, transparency, depth, location, season and year. The association was tested statistically using a Generalized Linear Model (GLM with Gamma type error. The results suggest that not all the covariates considered have a significant effect on egg abundance (Student’s T, p>0.005. The significant effects show the presence of a seasonal component and that the effect of salinity on egg abundance is conditional to location. High average egg abundances for the three annual cycles were observed during summer. The presence of significant interactions

  4. Results from the Palo Verde Neutrino Experiment

    Science.gov (United States)

    Piepke, Andreas

    1999-10-01

    The Palo Verde experiment, taking data since July 1998, is a disappearance search for anti-neutrino oscillations at baselines of 750 and 890 m from the three reactors of the Palo Verde Nuclear Generating Station. The finely segmented detector consists of 11.3 tons of 0.1% Gd loaded liquid scintillator surrounded by a passive water shield and hermetic cosmic muon veto. It is located in an underground laboratory with an overburden of 32 mw.e.. Analysis of data taken in 1998, covering 38 days at full power and 33 days with one reactor at 890 m distance down for refueling, was consistent with the absence of neutrino oscillations. Results of the analysis of data taken in 1999 will be presented. In addition to more than 100 days of reactor ``on'' data we have collected 24 days of data with the closest reactor down. An analysis of the Δm^2-sin^22θ sensitivity of our experiment and its implications for the interpretation of the atmospheric neutrino anomaly will be presented.

  5. Enriquecimiento de huevos con ácidos grasos omega-3 mediante la suplementación con semilla de lino (linum usitatissimum) en la dieta

    National Research Council Canada - National Science Library

    Betancourt Fernández, Liliana; Díaz, Gonzalo

    2009-01-01

    ... de huevo, se puede ver afectada por cambios en la composicion de la dieta (2). La grasa saturada y monoinsaturada tiene un menor efecto sobre el perfil de acidos grasos del huevo (3), que la grasa rica en acidos grasos poliinsaturados, la cual puede causar mayores cambios en el perfil (4), permitiendo de esta manera, la manipulacion de la composicion de los lipidos de la yema para cubrir los requerimientos nutricionales de los humanos. El interes sobre la relacion entre la dieta y la salud humana, proveen ...

  6. Variación en el tamaño de los huevos en garzas (Aves: Ardeidae) que anidan en la ciénaga de Birama, Cuba

    OpenAIRE

    Dennis Denis Ávila

    2015-01-01

    Las variaciones intranidada de la talla de los huevos de las aves responden a numerosos factores ecológicos y de la historia evolutiva de las especies. En las zancudas aunque se ha descrito una disminución de la talla con el orden de puesta, los trabajos comparativos entre especies son escasos. En este trabajo se describen los patrones de variación del tamaño de los huevos de nueve especies de garzas (Aves: Ardeidae) nidificantes en la ciénaga de Birama, Cuba. Los patrones se describen a part...

  7. TERMORRESISTENCIA DE CEPAS DE SALMONELLA NATIVAS EN ALBÚMINA DE HUEVO DESHIDRATADA Y PASTEURIZADA. EFECTO DE LA ACTIVIDAD DE AGUA Y DEL CHOQUE TÉRMICO.

    OpenAIRE

    LOUND, LILIANA HAYDEE

    2014-01-01

    La albúmina de huevo es una compleja mezcla de proteínas que contiene todos los aminoácidos esenciales. Se utiliza como suplemento alimenticio, por sí solo o mezclado con otros componentes. La industria de productos de huevo elabora, según la temperatura de pasteurización que utilice, un producto con buenas propiedades de batido obtenido por tratamiento térmico del polvo a 72°C y otro con excelentes propiedades de formación de gel que se obtiene cuando se aplica 82°C, ambos procesos por un ti...

  8. Relevamiento y evaluación de parasitoides de huevo para el control de Cydia pomonella (Lepidoptera: Tortricidae) y Grapholita molesta (Lepidotera: Tortricideae)

    OpenAIRE

    Oscar E. TORTOSA; Carmona, Agustín; Monje, Juan Carlos; Giardina, Mónica; Manzano, Pablo; Martinez, Eduardo

    2014-01-01

    Desde el mes de octubre hasta el mes de abril de los años 2005-2006 y 2006-2007 realizamos la búsqueda e identificación de parasitoides de huevo de Cydia pomonella (L.) (Lepidoptera: Tortricidae) y Grapholita molesta (Busck) (Lepi - doptera: Tortricidae) en tres sitios de Mendoza, Argentina. Trichogramma cacoe - ciae Marchal (Hymenoptera: Trichogrammatidae) fue colectado en huevos de las dos especies plagas, en todos los sitios del relevamiento, durante los dos ciclos de colecta. Se encontró ...

  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. OBTENCIÓN DE ANTICUERPOS POLICLONALES IgY ANTIPARVOVIRUS CANINO A PARTIR DE YEMA DE HUEVO DE GALLINA

    Directory of Open Access Journals (Sweden)

    Pinto, J.

    2005-06-01

    Full Text Available Inmunizando un grupo de diez gallinas de postura raza Lohmann de 16 semanas de edad con parvovirus canino (CPV cepa vacunal, se obtuvieron anticuerpos IgY policlonales contra CPV en yema de huevo.En la extracción de los anticuerpos de la yema se requirieron dos pasos, el primero para la remoción de lípidos y el segundo para la precipitación de proteínas. Para la remoción de lípidos se usó el método PBS:Cloroformo y para la precipitación de los anticuerpos solubles (Inmunoglobulinas-IgY se usó el método de salting-out con sulfato de amonio ((NH42SO4. La evaluación del proceso se efectuó empleando el método comercial estándar “EGGstract IgY Purification System®” de PROMEGA.La metodología empleada permitió la obtención de anticuerpos IgY policlonales contra CPV a partir de yema de huevo de gallina en concentraciones altas por mililitro de yema, con una pureza aceptable y títulos altos; los resultados fueron comparables con el método comercial.

  11. Reología de derivados de la yema de huevo deshidratada

    Directory of Open Access Journals (Sweden)

    Partal, Pedro

    2000-08-01

    Full Text Available The emulsification process, as weIl as and the emulsion rheology and stability, greatly depends on the rheological properties of the continuous phase, the most important ingredient of which is yolk. However, since native yolk is not microbiologically stable, processing of yolk, such as spray-drying, is necessary for food applications. The influence of processing by spray-drying on the microstructure and rheological properties of yolk was investigated using oscillatory, creep and steady state flow measurements. The spray-drying process produces denaturation of proteins giving rise to a dramatic change from a fluid-like behaviour, as corresponds to the native yolk, to a gel-like behaviour corresponding to the reconstituted dried yolk (45% solids. Temperature exerts a slight influence on the linear viscoelastic properties of processed yolk.Tanto el proceso de emulsificación como las propiedades reológicas y la estabilidad de una emulsión alimentaria, tipo mayonesa, dependen en gran medida de la microestructura y la reología de la fase continua acuosa, cuyo ingrediente principal es la yema de huevo. Debido a la inestabilidad microbiológica de ésta se hacen necesarios procesos de deshidratación por atomización para conservarla con fines alimentarios. En este trabajo se trata de determinar la influencia que ejerce la deshidratación sobre la microestructura analizando las propiedades reológicas de la yema mediante ensayos reológicos de cizalla oscilatoria, de flujo en estado estacionario y de fluencia viscosa. Se llegó a la conclusión de que la deshidratación produce la desnaturalización de las proteínas provocando un cambio desde un comportamiento tipo fluido (yema nativa a un comportamiento tipo gel (yema deshidratada reconstituida al 45% en sólidos. Por otro lado, se ha observado una escasa variación de las propiedades viscoelásticas lineales de la yema deshidratada con la temperatura.

  12. [Right ovarian vein syndrome].

    Science.gov (United States)

    Arvis, G

    1985-01-01

    Right ovarian vein syndrome is revealed in pregnancy by right lumbar pains, and even by nephritic colics. It results from a congenital malposition of the right ovarian vein, which presses the right ureter on the external iliac artery. Diagnosis is by intravenous urography and retrograde ureteral pyelography. If pain persists despite treatment by analgesics, it may be necessary to place a double-J catheter, and to operate after delivery to ligate the ovarian vein.

  13. l aceite de atún como fuente de ácidos grasos ω-3 en el huevo de gallina

    Directory of Open Access Journals (Sweden)

    Vázquez-Valladolid, J. L.

    2005-06-01

    Full Text Available Fish oils are a source of polyunsaturated omega 3 fatty acids (AG ω3, mainly eicosapentaenoic acid (EPA and docosahexaenoic acid (DHA, which supply many benefits to human health. Tuna oil was used as a source of marine 3ω FA to enrich eggs by supplementing the diet of egg-laying hens with tuna oil. One hundred and twenty White Leghorn hens of 90 weeks old were allocated on three treatments with four replicates each, on a completely random design. Treatments consisted of adding 1 % and 2 % of tuna oil to the diets. The total lipids and ω3FA of the eggs were determined. The egg-laying hen dietary tuna oil supplement (1 and 2 % enriched eggs with 300 % more EPA (0.40, 1.37, 1.54 mg/g lipids and DHA (7.90, 24.67, 24.50 mg/g lipids versus the control egg . The ω6:ω3 ratio decreased ( 11.4:1, 3.8:1, 3.0:1 as dietary tuna oil increased. There were no differences (p>0.05 among treatments in productive performance and egg quality, except egg weight which decreased with the tuna oil.Los aceites de pescado son una fuente de lípidos poliinsaturados de origen animal, principalmente de los ácidos grasos omega-3 (AG ω-3, eicosapentaenoico (EPA y docosahexaenoico (DHA, beneficiosos para la salud. En este trabajo se utilizó el aceite de atún como fuente de estos nutrientes en el huevo para consumo. Se utilizaron 120 gallinas blancas Leghorn Isa-Babcock B-300 de 90 semanas de edad, distribuidas al azar en tres tratamientos, con cuatro réplicas cada uno. Los tratamientos consistieron en adicionar 1% y 2% de aceite de atún en la dieta de las gallinas ponedoras. Se determinaron los lípidos totales y AG ω-3 en el huevo, obteniéndose 300 % más de EPA (0,40, 1,37, 1,54 mg/g lípidos y DHA (7,90, 24,67, 24,50 mg/g lípidos al adicionar 1 y 2% de aceite de atún en la dieta de las aves, que en el grupo testigo. La relación ω-6: ω-3 en el huevo disminuyó con el suplemento dietético de aceite de atún (11,4:1, 3,8:1, 3:1, lo mismo ocurri

  14. Postpartum renal vein thrombosis.

    Science.gov (United States)

    Rubens, D; Sterns, R H; Segal, A J

    1985-01-01

    Renal vein thrombosis in adults is usually a complication of the nephrotic syndrome. Rarely, it has been reported in nonnephrotic women postpartum. The thrombosis may be a complication of the hypercoagulable state associated with both the nephrotic syndrome and pregnancy. Two postpartum patients with renal vein thrombosis and no prior history of renal disease are reported here. Neither patient had heavy proteinuria. In both cases, pyelonephritis was suspected clinically and the diagnosis of renal vein thrombosis was first suggested and confirmed by radiologic examination. Renal vein thrombosis should be considered in women presenting postpartum with flank pain.

  15. Water Institutions and Management in Cape Verde

    Directory of Open Access Journals (Sweden)

    Miguel Suarez Bosa

    2015-05-01

    Full Text Available The water-management model used in Cape Verde for irrigation water is a singular one involving both public and private institutions. The institutional framework adopted since independence (1975 includes influences of both Portuguese colonial occupation and African culture. Water is a common-pool resource, which can take the form of communal, private or state property, or not be subject to any form of ownership. Thus, this case study enables us to compare theories about managing. From a neo-liberal point of view, the common administration of resources of this kind is inefficient, but for one school of the institutional theory, solutions can come “from within”; in other words, from user groups themselves, who can co-operate, once they have defined commitments. Research based on surveys and interviews with private sector administrators leads to the conclusion that user association management is successful, whereas, individual management can lead to squandering.

  16. 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.

  17. 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.

  18. Phylogeography of Cape Verde Island skinks (Mabuya).

    Science.gov (United States)

    Brown, R P; Suarez, N M; Smith, A; Pestano, J

    2001-06-01

    The Cape Verde Islands are of volcanic origin with most having appeared between the early Miocene and mid-Pleistocene. They contain six known species of Mabuya skinks. Phylogeographical relationships within and among the relatively widespread taxa M. stangeri, M. spinalis and M. delalandii were inferred, based on approximately 1 kbp of the cytochrome b gene (mitochondrial DNA). Reciprocal monophyly of M. spinalis and M. stangeri was established, which may have arisen from an early Pliocene/late Miocene cladogenetic event. Considerable between-island sequence divergence was detected among M. spinalis, which appears to have colonized the older islands (Sal and Boavista) first. Much lower sequence divergence was found in M. delalandii, indicating a more recent range expansion. Here, evidence points to colonization of the younger islands of Brava and Fogo soon after appearance. There are similarities between some of the described patterns and those seen in lizards from the Canary Islands.

  19. A novadora dramaturgia Barriga-Verde

    OpenAIRE

    Jairo Cesar Maciel

    2010-01-01

    Depois de três décadas convivendo com o teatro de Santa Catarina, podemos dizer que o meu hedonismo em discutir o que se escreve para o teatro em terras barriga-verdes, encontra-se cada vez mais incitado; motivado por uma célere gama de emergentes escritores dramáticos que surgiram ao longo desse período e que merecem aqui as nossas mais altas considerações e uma análise mais acurada desses textos como gênero e traços estilísticos. Para que pudéssemos analisar A Novadora Dramaturgia Barriga-V...

  20. 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.

  1. What Causes Varicose Veins?

    Science.gov (United States)

    ... blood flow, and thin, stretched walls. The middle image shows where varicose veins might appear in a leg. Figure A shows ... blood flow, and thin, stretched walls. The middle image shows where varicose veins might appear in a leg. Older age or ...

  2. El consumo de huevos podría prevenir la aparición de deficiencia de vitamina D en escolares

    Directory of Open Access Journals (Sweden)

    Elena Rodríguez-Rodríguez

    2013-06-01

    Full Text Available Introducción: La vitamina D es esencial para la prevención de diversas enfermedades crónicas. Aunque se puede sintetizar a nivel cutáneo, esta fuente no es siempre suficiente para cubrir sus necesidades, por lo que el consumo de alimentos ricos en la misma, como el huevo, podría ser muy beneficioso en individuos que están en riesgo de presentar deficiencia. Objetivo: Estudiar la relación entre el estatus en vitamina D y el consumo diario de huevos en un colectivo de escolares. Metodología: Se incluyeron 564 escolares (9 a 12 años de la Comunidad de Madrid. La ingesta de alimentos, de energía y nutrientes (incluidos el huevo y la vitamina D, se determinó empleando un registro del consumo de alimentos durante 3 días. Se calculó el Índice de Masa Corporal a través del peso corporal y la talla. Se valoró el colesterol total, lipoproteínas, triglicéridos y vitamina D sérica. Resultados: El consumo medio de huevos fue de 32,7 ± 20,9 g/día (inferior a 0,5 huevo/día recomendados en el 36,3% de los escolares. Se dividió a los escolares en función de que tuvieran un consumo > o < 0,5 huevo/día (grupos SH e IH, respectivamente. La ingesta y los niveles séricos de vitamina D fueron significativamente superiores en el grupo SH que en el IH. Además, los primeros tuvieron menor riesgo de presentar deficiencia moderada de vitamina D (< 50 nmol/L (OR = 0,41 (0,19-0,88; p = 0,022. No se observaron diferencias significativas entre los grupos en relación con las cifras de colesterol total y triglicéridos. Conclusión: Es recomendable fomentar el consumo de al menos 0,5 huevo/día entre la población infantil debido a su alto contenido en vitamina D, lo que podría evitar la aparición de problemas de salud.

  3. Ouro Verde MG 2: nova cultivar de mungo-verde para Minas Gerais Ouro Verde MG 2: new mungbean cultivar for Minas Gerais State, Brazil

    Directory of Open Access Journals (Sweden)

    Rogério F. Vieira

    2002-03-01

    Full Text Available Dentre várias linhagens introduzidas do "Asian Vegetable Research and Development Center" (AVRDC, sobressaiu a linhagem VC 3984-B-2-B-4-1-B, que recebeu o nome de Ouro Verde MG 2. Suas sementes são verde-brilhantes e o peso de 1000 unidades varia de 43 a 51 g. O início da floração ocorre em torno de 33 dias após a emergência e a primeira vagem madura surge entre 23 e 33 dias. Por se tratar de espécie de maturação desuniforme, podem ser necessárias duas a quatro colheitas. As plantas podem atingir 95 cm de altura. As vagens são marrom-escuras e concentram-se na parte superior da planta. É suscetível a duas doenças que geralmente aparecem no final do ciclo de vida do mungo-verde: míldio-pulverulento (Erysiphe polygoni e mancha-foliar-de-cercospora (Cercospora canescens. A 'Ouro Verde MG 2' é resistente ao acamamento, e o seu rendimento, em três ensaios instalados em dezembro, janeiro e fevereiro, variou de 1,5 a 2,0 t/ha. Esses rendimentos foram, em média, 12% superior ao da cultivar Ouro Verde.Among many accessions introduced from Asian Vegetable Research and Development Center (AVRDC, the VC 3984-B-2-B-4-1-B stood out and was named 'Ouro Verde MG 2'. The seeds are bright green and 1000-seed weight ranges from 43 to 51 g. Flowering starts approximately 33 days after emergence and the first pod ripens between 23 and 33 days later. As mungbean is a non-uniform maturation species, two to four harvests could be necessary. The plant can reach 95 cm high. The pods are dark brown and concentrated in the upper canopy. This cv. is susceptible to two diseases which generally appear late in the crop: powdery mildew (Erysiphe polygoni and cercospora leaf spot (Cercospora canescens. 'Ouro Verde MG 2' is resistant to lodging. The yield measured in three experiments carried out in December, January, and February, ranged from 1.5 to 2.0 t/ha. In average, these yields were 12% superior than the achieved by the cultivar 'Ouro Verde'.

  4. OBTENCIÓN DE ANTICUERPOS POLICLONALES IgY ANTIPARVOVIRUS CANINO A PARTIR DE YEMA DE HUEVO DE GALLINA

    OpenAIRE

    Pinto, J.; Barco, M.; Afanador, M.C.; Merchán, A.M.*;; Montañez, M.F.; Andrade,F.; O. Torres

    2005-01-01

    Inmunizando un grupo de diez gallinas de postura raza Lohmann de 16 semanas de edad con parvovirus canino (CPV) cepa vacunal, se obtuvieron anticuerpos IgY policlonales contra CPV en yema de huevo.En la extracción de los anticuerpos de la yema se requirieron dos pasos, el primero para la remoción de lípidos y el segundo para la precipitación de proteínas. Para la remoción de lípidos se usó el método PBS:Cloroformo y para la precipitación de los anticuerpos solubles (Inmunoglobulinas-IgY) se u...

  5. OBTENCIÓN DE ANTICUERPOS POLICLONALES IgY ANTIPARVOVIRUS CANINO A PARTIR DE YEMA DE HUEVO DE GALLINA

    OpenAIRE

    Pinto, J.; Barco, M.; Afanador, M.C.; Merchán, A.M.*;; Montañez, M.F.; Andrade, F; Torres, O.

    2005-01-01

    Inmunizando un grupo de diez gallinas de postura raza Lohmann de 16 semanas de edad con parvovirus canino (CPV) cepa vacunal, se obtuvieron anticuerpos IgY policlonales contra CPV en yema de huevo.En la extracción de los anticuerpos de la yema se requirieron dos pasos, el primero para la remoción de lípidos y el segundo para la precipitación de proteínas. Para la remoción de lípidos se usó el método PBS:Cloroformo y para la precipitación de los anticuerpos solubles (Inmunoglobulinas-IgY) se u...

  6. Congenital preduodenal portal vein

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Sang Jin; Hwang, Mi Soo; Huh, Young Soo; Park, Bok Hwan [College of Medicine, Youngnam University, Gyeongsan (Korea, Republic of)

    1991-03-15

    Congenital preduodenal portal vein, first reported by Knight in 1921, is an extremely rare congenital anomaly in which the portal vein passes anteriorly to the duodenum rather than posteriorly in its normal location. It is of surgical significance because it may cause difficulties in operations involving the gall bladder, biliary duct, or duodenum. Recently, we experienced 2 cases of preduodenal portal vein. One was found during surgical exploration for the diagnosis and correction of malrotation of the bowels and the other in a 3 day-old male newborn associated with dextrocardia, situs inversus, and duodenal obstruction by diaphragm. We report these 2 cases with a review of the literature.

  7. Umbilical and portal vein calcification following umbilical vein catheterization

    Energy Technology Data Exchange (ETDEWEB)

    Schneider, K.; Fendel, H.; Hartl, M.

    1989-07-01

    Calcifications of the umbilical vein and intrahepatic branches of the portal vein developed in a newborn who had inserted an umbilical vein catheter for 11 days postnatally. The calcified intrahepatic portal veins can still be demonstrated sonographically at the age of three years, whereby these calcifications were no longer detectable radiologically. (orig.).

  8. 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.

  9. 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...

  10. Deep vein thrombosis.

    Science.gov (United States)

    Bandyopadhyay, Gargi; Roy, Subesha Basu; Haldar, Swaraj; Bhattacharya, Rabindra

    2010-12-01

    Occlusive clot formation in the veins causes venous thrombosis, the site most common in the deep veins of leg, called deep vein thrombosis. The clot can block blood flow and when it breaks off, called an embolism which in turn can damage the vital organs. Venous thrombosis occurs via three mechanisms ie, Virchow's triad. The mechanisms are decreased flow rate of blood, damage to the blood vessel wall and an increased tendency of the blood to clot. There are several factors which can increase a person's risk for deep vein thrombosis. The symptoms of deep vein thrombosis in the legs are pain, swelling and redness of the part. One variety of venous thrombosis is phlegmasia alba dolens where the leg becomes pale and cool. Investigations include Doppler ultrasound examination of the limb, D-dimer blood test, plethysmography of the legs, x-rays to show vein in the affected area (venography). Hospitalisation is necessary in some cases with some risk factors. The mainstream of treatment is with anticoagulants, mostly low molecular weight heparin for 6 months. Deep venous thrombosis is a rising problem. Early diagnosis and treatment is associated with a good prognosis.

  11. Mesenteric vein thrombosis: CT identification

    Energy Technology Data Exchange (ETDEWEB)

    Rosen, A.; Korobkin, M.; Silverman, P.M.; Dunnick, N.R.; Kelvin, F.M.

    1984-07-01

    Superior mesenteric vein thrombosis was identified on computed tomographic scans in six patients. In each case, contrast-enhanced scans showed a high-density superior mesenteric vein wall surrounding a central filling defect. Four fo the six patients had isolated superior mesenteric vein thrombosis. A fifth patient had associated portal vein and splenic vein thrombosis, and the sixth patient had associated portal vein and inferior vena cava thrombosis. One of the six patients had acute ischemic bowel disease. The other five patients did not have acute ischemic bowel symptoms associated with their venous occlusion. This study defines the computed tomographic appearance of mesenteric vein thrombosis.

  12. Aplicación de las funciones elípticas de Fourier para la descripción de la forma de los huevos de las aves

    Directory of Open Access Journals (Sweden)

    Dennis Denis Ávila

    2014-12-01

    Full Text Available La forma de los huevos es difícil de cuantificar por la ausencia de fórmulas exactas que describan su geometría. Se describe un algoritmo para la caracterización y comparación de estas formas, basado en la aplicación de las funciones de Fourier. Estas permiten delinear cualquier tipo de contorno cerrado y han sido aplicadas efectivamente al análisis de varias formas biológicas. Se describen los pasos para la toma de datos, su procesamiento y el empleo del programa SHAPE para la obtención de los descriptores, a partir de un estudio de caso. En este se comparan las formas de los huevos de tres especies de aves que representan tres estrategias reproductivas bien diferentes: el Catey (Aratinga euops, la Gaviota Real (Thalasseus maximus y el Totí (Dives atroviolaceus. A partir de 73 fotografías digitales a huevos depositados en colecciones, se calcularon los coeficientes de las funciones para 4, 6, 8, 16 y 20 armónicos, y se redujeron por medio de un Análisis de Componentes Principales. Los puntajes de los componentes que describen hasta el 90 % de la variabilidad fueron empleados en un Análisis de Función Discriminante Lineal para analizar la posibilidad de separar los huevos según sus formas. Con solo cuatro armónicos los primeros cinco componentes explicaron 97% de la varianza en formas. Más armónicos disminuyen la varianza explicada, requiriéndose hasta ocho componentes para explicar la misma cantidad. Los polígonos convexos en el espacio discriminante muestran una clara distinción entre especies sugiriendo la posible discriminación (errores de clasificación entre 7-15%. Los errores en las clasificaciones estuvieron relacionados a diferencias específicas en la forma entre especies. En el estudio de caso, los huevos de A. euops fueron perfectamente clasificados pero en las otras especies los errores fueron entre 5 y 29%, con este número de armónicos y componentes empleados. El algoritmo propuesto a pesar de su

  13. Cuantificacion de huevo en fideos secos según metodo electroforético (SDS PAGUE Quantification of egg in dried noodles by electrophoretic methods (SDS PAGE

    Directory of Open Access Journals (Sweden)

    LB López

    2011-06-01

    Full Text Available La cuantificación de huevo en fideos secos elaborados con harina y agregado de huevo. Se analizaron 6 sistemas modelos (SM de fideos que contenían 0,0; 1,0; 2,5; 4,0; 6,0 y 8,0% de huevo en polvo. Se extrajeron proteínas totales con un buffer que contiene dodecilsulfato de sodio (SDS y 2-Mercaptoetanol y se realizó electroforesis en gel de poliacrilamida con SDS. Se establecieron las relaciones de las áreas de los picos de los densitogramas (de huevo y de trigo que permiten una correcta cuantificación del porcentaje de huevo agregado. Se analizaron 11 muestras comerciales en las cuales se realizó la cuantificación de huevo, obteniéndose valores comprendidos entre The objective of this work was to use the SDS-PAGE method for the quantification of egg in dry noodles made with flour and added egg. 6 model systems (MS of noodles containing 0.0, 1.0, 2.5, 4.0, 6.0 and 8.0% of egg powder were analyzed. Total proteins with a buffer containing sodium dodecyl sulfate (SDS and 2-mercaptoethanol were extracted and electrophoresis with SDS polyacrylamide gel was carried out. The relationships of the peak areas of the densitograms (egg and wheat that allow a proper quantification of the percentage of egg added were established. 11 commercial samples in which quantification of egg was carried out were analyzed, with values ranging between <1.0% and 8.8% of egg powder. In the analyzed MS and in the commercial samples the cholesterol content (enzymatic method was also determined and the egg content was determined by the method ELISA. Cholesterol values in the MS increased with the increase of the added egg powder, while in the samples, low levels of cholesterol were found for the lowest egg levels and high values for the highest egg levels. With the ELISA method a correct quantification of egg up to 4.0% was achieved, but low results were obtained in the higher systems (6.0 and 8.0%. This could be due to the significant dilution that must be made from

  14. EFECTO DE DENSIDAD POBLACIONAL DE HUEVOS SOBRE VIABILIDAD Y TIEMPO DE DESARROLLO DE Drosophila melanogaster (DROSOPHILIDAE Effect Of Eggs Population Density On Viability And Time Of Development Of Drosophila melanogaster (Drosophilidae

    Directory of Open Access Journals (Sweden)

    CRISTIAN FONG

    Full Text Available Para estimar el efecto de la densidad poblacional de huevos sobre la viabilidad huevoadulto de Drosophila melanogaster se realizaron tres tratamientos en frascos con medio de cultivo agar-banano: a densidad de 10, 50 y 90 huevos. La variable de respuesta fue la proporción de individuos adultos emergidos desde la aparición del primer imago hasta 15 días después de la siembra. Las viabilidades huevo-adulto promedio fueron 0,320, 0,338 y 0,328 para las densidades de 10, 50 y 90 huevos respectivamente. No se evidenciaron diferencias significativas entre los tres tratamientos (p>0.05. Por lo tanto, no se detectó en este estudio influencia de la densidad poblacional de huevos sobre la viabilidad huevo-adulto. Probablemente debido a que la proporción entre el número de huevos y la cantidad de medio fue suficientemente alta para no generar competencia en otros estadios del desarrollo huevo/adulto.For estimating the effect from population density of eggs over viability egg-adult in Drosophila melanogaster, it was made three treatments in flasks with agar-banana culture media: densities of 10, 50 and 90 eggs. The effect evaluated was the adult’s proportion that emerged after 15 days of planting. The mean proportions of viability egg-adult were 0.32, 0.338 and 0.328 for the density of 10, 50 and 90 eggs respectively. Significant differences in viability were not evident (p>0.05. Consequently, it was not found effects from the eggs densities in the present study over egg-adult viability. These results probably were due to that the relation among number of eggs and quantity of culture media was not enough of a high for generate competition at another stadiums through the egg-adult development.

  15. Clima, cultura y disponibilidad de espacios verdes urbanos

    OpenAIRE

    Sierra, Eduardo Mario; Pérez, Silvia Patricia; Nizzero, Gustavo Raúl

    2002-01-01

    p.165-171 El rápido crecimiento urbano mundial hace que la calidad de vida dependa cada vez más de la disponibilidad de espacios verdes. Este trabajo trata de relacionar la disponibilidad de espacios verdes urbanos públicos con los factores climáticos y culturales. Las ciudades del Hemisferio Norte en países de cultura europea, donde se llevan a cabo programas de sustentabilidad muestran mayores disponibilidades lo cual refleja el impacto de los factores culturales. Desde el punto de vista...

  16. Espacios verdes urbanos, fortalezas, amenazas y oportunidades de mejora

    OpenAIRE

    Breuste, Juergen; Artmann, A.; Wurster, D.; Voigt, Annette; Faggi, Ana Maria

    2016-01-01

    En términos de sustentabilidad es preciso entender, diseñar y manejar el verde urbano adecuadamente desde una perspectiva ecológica, estética y recreativa (FTL-HSR & ZSA 2006). Se presentan aquí a modo de ejemplos resultados de investigaciones realizadas en Buenos Aires, Salzburgo y Munich, que aportan ideas sobre el valor de los espacios verdes y de las problemáticas a los cuales se enfrentan. Fil: Breuste, Juergen. Lodron-Paris University; Austria Fil: Artmann, A.. Fil: Wurster, ...

  17. 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.

  18. 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.

  19. Rendimiento reproductivo en cruzamientos entre razas tradicionales de aves productoras de huevo y carne Reproductive output in laying hen and meat type breed crosses

    Directory of Open Access Journals (Sweden)

    F Revidatti

    2005-12-01

    Full Text Available En el presente trabajo se evaluaron distintas variables que se relacionan con el rendimiento reproductivo en dos tipos de aves de líneas tradicionales, una semi-pesada, seleccionada para la producción de huevos para consumo (Negra y Rubia INTA y otra pesada, cuya progenie se destina a la producción de carne aviar (Campero INTA. Se hallaron diferencias significativas en el número de huevos incubables (191 y 110 huevos por ave/año, en los porcentajes de fertilidad (93 y 88%, incubabilidad (88 y 83% y en el número de pollitos por ave por año (158 y 82 entre las aves semi-pesadas y pesadas, respectivamente. Dicho comportamiento coincide con lo referido por la bibliografía con relación a la aptitud reproductiva de razas productoras de huevo para consumo y razas productoras de carne.In this work we evaluate different variables in relation with the reproductive output in two traditional breed chicken types one of them semi-heavy for egg production (Negra and Rubia INTA and the other one heavy whose offsprings are destined to meat chicken production (Campero INTA. We found significative differences in the settables egg number (191 and 110 eggs per hen per year in the fertility percent (93 and 88 in the hatchability (88 and 83 and in the chick number per hen per year (158 and 82 between semi-heavy an heavy chickens respectively. These results agree with the references in relation with reproductive fitness in laying and meat type chickens.

  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. 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…

  2. El secreto del huevo azul, de Catalina González Vilar. Estudio narratológico

    Directory of Open Access Journals (Sweden)

    Miguel Sánchez-García

    2013-01-01

    Full Text Available Este trabajo aborda el estudio narratológico de la obra El secreto del huevo azul , de la escritora Catalina González Vilar, que obtuvo el Premio El Barco de Vapor en el año 2012. Examina los diferentes elementos constitutivos del texto (el enfoque del tema, la caracterización de los personajes, la estructura sintáctica, el tratamiento del lenguaje, la técnica narrativa utilizada... y su aporte al desarrollo de la historia con la finalidad de descubrir los valores estéticos y literarios que aporta a la fábula. Pretende demostrar el adecuado uso de todos ellos dado que favorecen un texto rico en matices, llamativo, sugerente. Cualidades, todas ellas, de gran importancia tanto en creaciones destinadas al público adulto como al infantil y juvenil pues enriquece el valor final de la obra, y por extensión, el bagaje cultural de sus lectores.

  3. Deep Vein Thrombosis

    Centers for Disease Control (CDC) Podcasts

    2012-04-05

    This podcast discusses the risk for deep vein thrombosis in long-distance travelers and ways to minimize that risk.  Created: 4/5/2012 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 4/5/2012.

  4. Retinal vein occlusion

    Science.gov (United States)

    ... decrease the risk of retinal vein occlusion. These measures include: Eating a low-fat diet Getting regular exercise Maintaining an ideal weight Not smoking Aspirin or other blood thinners may help prevent blockages in the other eye. Controlling diabetes may ...

  5. The vein collar

    DEFF Research Database (Denmark)

    Lundgren, F; Schroeder, Torben Veith

    2012-01-01

    Randomized studies evaluating the effect of a vein collar at the distal anastomosis of PTFE-grafts show conflicting results. The study of the Joint Vascular Research Group (JVRG) of UK found improved primary patency while the Scandinavian Miller Collar Study (SCAMICOS) found neither any effect...

  6. Deep Vein Thrombosis

    African Journals Online (AJOL)

    OWNER

    Il s'agissait de la main et les recherches en ligne. Des termes ..... Cerrato D, Ariano G, and Fiacchino F : Deep vein ... Surg 1988; 75: 1053–7. 19. Salzman ... Alikhan R, Cohen AT, Combe S, Samama .... Kakkar AK, Williamson RCN. Thrombo.

  7. [Ovarian vein syndrome].

    Science.gov (United States)

    Ferrero Doria, R; Guzmán Valls, P; López Alba, J; Tomás Ros, M; Rico Galiano, J L; Fontana Compiano, L O

    1996-04-01

    The Ovarian Vein Syndrome has been the subject of controversy ever since first described as such by Clark in 1964. This is an uncommon entity within urologic sings and symptoms which appears as a recurrent nephritic colic coinciding with menstruation or during the immediately preceding days. The authors review a clinical case from our Urology Service, including some considerations on the case.

  8. Cucumber vein yellowing virus

    Science.gov (United States)

    Cucurbits are an important crop of temperate, subtropical and tropical regions of the world. Cucumber vein yellowing virus (CVYV) is a major viral pathogen of cucurbits. This chapter provides an overview of the biology of CVYV and the disease it causes....

  9. Squash vein yellowing virus

    Science.gov (United States)

    Cucurbits are an important crop of temperate, subtropical and tropical regions of the world. Squash vein yellowing virus (SqVYV) is a major viral pathogen of cucurbits. This chapter provides an overview of the biology of SqVYV and the disease it causes....

  10. Neotectonic morphotructures in the junction zone of the Cape Verde Rise and Cape Verde Abyssal Plain, Central Atlantic

    Science.gov (United States)

    Skolotnev, S. G.; Kolodyazhny, S. Yu.; Tsukanov, N. V.; Chamov, N. P.; Sokolov, S. Yu.

    2009-01-01

    Acoustic profiling carried out with an Edgetech 3300 prophilograph in the junction zone of the Cape Verde Rise, Cape Verde Abyssal Plain, and Grimaldi and Bathymetrists seamounts in the Central Atlantic during Cruise 23 of the R/V Akademik Nikolaj Strakhov allowed us to obtain new data on neotectonic deformations in the ocean and to propose their interpretation. It has been established that neotectonic movements occurred in the discrete manner: blocks of undeformed rocks alternate with linear zones of intense deformation spatially related to paleotransform fracture zones, where anticlines, horsts, diapir-like morphostructures, and grabens were formed. The Cape Verde Ridge is a large horst. Its sedimentary cover is disturbed by thrust (?), reverse, and normal faults, steeply dipping fracture zones, and folds. Three stages of tectonic movements—Oligocene-early Miocene, pre-Quaternary, and Holocene—are recognized. The tectonic deformations occurred largely under near-meridional compression. Extension setting was characteristic of the Cape Verde Ridge and the Carter Rise in the Holocene.

  11. Endovenous treatments for varicose veins

    NARCIS (Netherlands)

    R.R. van den Bos (Renate)

    2011-01-01

    textabstractEndovenous treatment is currently one of the most frequently used methods for treating varicose veins in the Netherlands. Varicose veins are tortuous and enlarged veins due to weakening in the vein’s wall or valves. They are manifestations of chronic venous disease (CVD), which may lead

  12. 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

  13. Varicosity of the pulmonary veins

    Energy Technology Data Exchange (ETDEWEB)

    Leicher-Dueber, A.; Lindner, P.; Schild, H.; Plewe, G.

    1986-04-01

    Varicosity of the pulmonary veins is a rare anomaly of the pulmonary vascular system. The varices do not usually change in size over years, do not cause symptoms and need no therapy. However, raised left atrial pressure can cause increase in the diameter of pulmonary vein varices. A case of lung vein varicosity in the right middle and upper lobe associated with coarctation of the aorta and an anomalous upper-middle lobe vein was observed over a period of 10 years. Increase in left atrial pressure (aortic and relative mitral regurgitation) led to enlargement of the pulmonary veins.

  14. 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

  15. Estudio anual de la eliminación de huevos y ooquistes de parásitos gastrointestinales y larvas de nemátodos pulmonares en ovinos de una estancia en Magallanes, Chile Annual study of the of egg and oocyst outputs of gastrointestinal parasites and lungworm larvae in a sheep station of Magallanes, Chile

    Directory of Open Access Journals (Sweden)

    G. SIEVERS

    2002-01-01

    Full Text Available Con el fin de recabar antecedentes epidemiológicos sobre las endoparasitosis del ovino en Magallanes, XIIª Región de Chile, se trabajó en la estancia "Entre Vientos", comuna de Río Verde, durante un año (septiembre de 1999 a agosto del 2000. A partir de animales de 3 categorías de edad mantenidos bajo un sistema de explotación extensiva, compuestos por 9.800 corderos (nacidos durante la primavera de 1999, 1.800 borregas (1 año de edad y 13.500 ovejas (2 o más años de edad, se determinaron las tendencias de eliminación de huevos, ooquistes y larvas de parásitos gastrointestinales y pulmonares. Cada 14 días se obtuvo materia fecal desde el recto de 25 animales pertenecientes a cada grupo de edad, muestreados al azar, para realizar recuentos de huevos y diferenciación de larvas de nemátodos gastrointestinales, recuentos de huevos de cestodos, determinación de animales positivos a ooquistes de protozoos intestinales y detección de larvas de nemátodos pulmonares. Los corderos presentaron las mayores eliminaciones de huevos de nemátodos gastrointestinales durante el verano, con predominancia de los géneros Nematodirus y Ostertagia. En borregas y ovejas, las mayores eliminaciones de Ostertagia y Trichostrongylus se produjeron en primavera, coincidiendo con el alza de la temperatura ambiental. La categoría más contaminante fue la de las ovejas en primavera, mientras que los corderos lo fueron en el verano. Durante la primavera, la mayor parte de los animales eliminó ooquistes de Eimeria spp., pero fueron los corderos los mayores contaminantes. La mayor oviposición de huevos de Moniezia expansa se registró en corderos y borregas, durante el verano y primavera respectivamente. Larvas de Dictyocaulus filaria se detectaron principalmente en corderos durante el otoño e invierno. No se diagnosticaron casos de parasitosis clínicas durante los meses del estudio, lo que se puede explicar dado el sistema de crianza extensivo y al

  16. 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)

  17. The Camino Verde intervention in Nicaragua, 2004-2012.

    Science.gov (United States)

    Arosteguí, Jorge; Ledogar, Robert J; Coloma, Josefina; Hernández-Alvarez, Carlos; Suazo-Laguna, Harold; Cárcamo, Alvaro; Reyes, Rosa María; Belli, Alejandro; Andersson, Neil; Harris, Eva

    2017-05-30

    Camino Verde (the Green Way) is an evidence-based community mobilisation tool for prevention of dengue and other mosquito-borne viral diseases. Its effectiveness was demonstrated in a cluster-randomised controlled trial conducted in 2010-2013 in Nicaragua and Mexico. The Nicaraguan arm of the trial was preceded, from 2004 to 2008, by a feasibility study that provided valuable lessons and trained facilitators for the trial itself. Here, guided by the Template for Intervention Description and Replication (TIDieR), we describe the Camino Verde intervention in Nicaragua, presenting its rationale, its time and location, activities, materials used, the main actors, modes of delivery, how it was tailored to encourage community engagement, modifications made from the feasibility study to the trial itself, and how fidelity to the process originally designed was maintained. We also present information on costs and discuss the place of this study within the literature on implementation science. ISRCTN27581154 .

  18. 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

  19. Biología de Cycloneda Sanguínea L. (Coleoptera: Coccinellidae Criado sobre el Afido Verde de los Cítricos (Aphís Citricola Van Der Goot

    Directory of Open Access Journals (Sweden)

    Hurtado Mejía Juan Guillermo

    1997-12-01

    Full Text Available Los estudios de laboratorio sobre la biología del escarabajo (Cycloneda sanguinea L. alimentado con el áfido verde de los cítricos (Aphis citricola Van der Goot presentó 4 ínstares larvales. La duración de huevo al adulto fue de 30,2 días. Las tasas de desarrollo para los ínstares larvales para la longitud del cuerpo, ancho de la cápsula cefálica y la longitud del profémur fueron 1,65 mm, 1,33 mm y 1,416 mm, respectivamente. El factor de Dyar hallado para los instares larvales de la longitud del cuerpo, ancho de la cápsula cefálica y longitud del profémur fueron de 1,68 mm, 1,32 mm y 1,38 mm, respectivamente. Tanto las tasas de desarrollo como el factor de Dyar mostraron variaciones entre instares y características morfológicas. Sin embargo, una de las características, ancho de la cápsula cefálica, evidenció una medida constante (1,3 mm.

  20. Importance of implementing program Screening Neonatal Hemoglobinopathies in Cape Verde

    OpenAIRE

    Leonel Barbosa Goncalves

    2015-01-01

    Hemoglobinopathies are hereditary blood diseases, the most frequent sickle cell anemia. To date not have curative treatment, unless bone marrow transplant, which has yet been carried out experimentally. The implementation of screening programs of hemoglobinopathies in health services in Cape Verde is shown to be of great relevance and importance to public health, as it will allow early detection and treatment associated with hemoglobinopathies. [Natl J Med Res 2015; 5(1.000): 87-88

  1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. Determinación cuantitativa de vitamina c y pigmentos y procesamiento de la papa criolla, variedad yema de huevo (solanum phureja juz et buck)

    OpenAIRE

    Alvarez G., Isabel; Mahecha, Gabriela; Guzman, Rosa

    2009-01-01

    Empleando papa pardo'pastusa (Solanum tuberosum) como control, se determinó el contenido de Vitamina C total en la papa criolla, variedad Yema de Huevo (Solanum phureja, Juz et Buck) y se evaluaron las pérdidas durante la cocción y el freído. Se utilizaron los métodos colorimétrico y densitométrico: el primero dio resultados altos debido a sustancias interferentes; el segundo reportó los siguientes valores: criolla 21 mg/100 g, pardo-pastusa 18 mg/100 g (para muestra fresca). Las pérdidas de ...

  6. Determinación cuantitativa de vitamina C y pigmentos y procesamiento de la papa criolla, variedad yema de huevo (Solanum phureja Juz et Buck)

    OpenAIRE

    Isabel Alvarez G.; Gabriela Mahecha; Rosa Guzman

    2009-01-01

    Empleando papa pardo'pastusa (Solanum tuberosum) como control, se determinó el contenido de Vitamina C total en la papa criolla, variedad Yema de Huevo (Solanum phureja, Juz et Buck) y se evaluaron las pérdidas durante la cocción y el freído. Se utilizaron los métodos colorimétrico y densitométrico: el primero dio resultados altos debido a sustancias interferentes; el segundo reportó los siguientes valores: criolla 21 mg/100 g, pardo-pastusa 18 mg/100 g (para muestra fresca). Las pérdidas de ...

  7. Determinación de huevos de Toxocara canis en suelo de tres parques públicos de Duitama (Boyacá

    Directory of Open Access Journals (Sweden)

    Camilo Ernesto Guarín-Patarroyo

    2016-01-01

    Full Text Available Toxocara canis es un nemátodo frecuente en el intestino delgado de los perros, que se infestan a través de migración transplacentaria, vía galactógena o por ingestión de huevos embrionados; infecta también a las personas, principalmente a menores de cinco años, produciendo la toxocariasis humana, zoonosis catalogada como desatendida; se adquiere especialmente por ingesta de tierra contaminada y verduras sin adecuado manejo sanitario, y causa enfermedades como el Síndrome de Larva Migrans visceral y cutánea y Toxocariasis ocular. Este estudio tuvo como objetivo determinar, mediante la técnica de Sloss, la presencia de huevos de Toxocara canis en suelos de tres parques públicos de Duitama, y, además, identificar los mecanismos de trasmisión de la Toxocara canis en la población que acude a estos parques. Para ello se colectaron 76 muestras de suelo de 10 cm de largo por 10 cm de ancho y 3 de profundidad, las cuales fueron repartidas en dos estratos y almacenadas en bolsas plásticas herméticas para su posterior estudio en el laboratorio. Los resultados obtenidos indican que los huevos del parásito se encontraron en el 34.7% de las muestras recolectadas, señalando un nivel de riesgo para la población. De acuerdo con las variables pH, humedad y estratos, no se obtuvo asociación entre estas y la identificación del huevo. La presencia de T. canis en los parques indica que la población de la ciudad de Duitama está expuesta al riesgo potencial de adquirir el parásito.

  8. Harina de crustáceos en raciones de gallinas ponedoras. Efecto en las variables productivas y evaluación sensorial de huevos almacenados en diferentes condiciones

    OpenAIRE

    M. Elena Carranco; C.C. Calvo; D.S. Carrillo; C.R. Ramírez; Morales, B. E.; G.L. Sanginés; M.B. Fuente; Ávila, G.E.; R.F. Pérez-Gil

    2011-01-01

    Se evaluó el efecto en las variables productivas de la inclusión de harina de camarón (HC) y harina de langostilla (HL) en dietas para gallinas ponedoras. Se hizo una evaluación sensorial del huevo fresco y almacenado en diferentes condiciones. Se distribuyeron 135 gallinas en tres tratamientos: testigo, HC (20 %) y HL (4 %). Los resultados se analizaron por ANDEVA y Friedman. Se demostró que variables productivas, como la evaluación sensorial, no mostraron diferencias significativas (P 0.05...

  9. ENRIQUECIMIENTO DE HUEVOS CON ÁCIDOS GRASOS OMEGA-3 MEDIANTE LA SUPLEMENTACIÓN CON SEMILLA DE LINO (Linum usitatissimum EN LA DIETA

    Directory of Open Access Journals (Sweden)

    Gonzalo Díaz

    2009-04-01

    Full Text Available Objetivo. Enriquecer los huevos de gallina con ácidos grasos omega-3 (n-3 mediante la inclusión de semillas de lino en la dieta. Materiales y métodos. La dieta de las aves fue formulada con niveles de 0 (L0, 10 (L10, 15 (L15 y 20% (L20 de linaza. Se determinó la composición de ácidos grasos por cromatografía de gases y se evaluó la producción y calidad del huevo. Resultados. El porcentaje de producción de huevo fue superior en los grupos L0 y L15 (p<0.05 con 93,0 y 91,5% de producción comparada con 86,0 % en los grupos L10 y L20. La mejor conversión de alimento se presentó también en los grupos L0 y L15. Con la inclusión de semilla de lino, se incrementó el contenido de ácidos grasos n-3 desde 3,0 % en el grupo L0 hasta 12,6 % en el grupo L20, siendo los ácidos grasos n-3 á-linolénico (C18:3, n-3 y docosahexahenóico (DHA, C22:6, n-3 los hallados en mayor concentración. Con la inclusión de linaza en la dieta de las gallinas ponedoras se redujo el contenido de acido linoleico (C18:2n-6, lo cual resultó en una disminución en la relación n-6: n-3. Conclusiones. Con base en la evaluación económica se concluye que es posible enriquecer la yema de huevo de gallina hasta con un 10,1 % de ácidos grasos n-3 mediante la inclusión de un 15 % de linaza en la dieta de las gallinas, sin embargo, esto representó un sobrecosto de producción del 12%.

  10. Retroaortic left renal vein joining the left common iliac vein

    Energy Technology Data Exchange (ETDEWEB)

    Brancatelli, G.; Galia, M.; Finazzo, M.; Sparacia, G.; Pardo, S.; Lagalla, R. [Dept. of Radiology ' ' P. Cignolini' ' , Univ. of Palermo (Italy)

    2000-11-01

    Retroaortic left renal vein joining the left common iliac vein is a rare congenital anomaly in the development of the inferior vena cava. To our knowledge, only one case has been reported in the literature; however, its imaging features have never been described. A 27-year-old male presented with a 1-year history of recurrent right flank pain, dysuria, hematuria, and fever (39 C). Computed tomography and MR venography showed a retroaortic left renal vein joining the left common iliac vein. We present the CT and MR venography findings and discuss their feasibility in showing this congenital anomaly. (orig.)

  11. Population size, breeding biology and on-land threats of Cape Verde petrel (Pterodroma feae) in Fogo Island, Cape Verde

    Science.gov (United States)

    Zango, Laura; Calabuig, Pascual; Stefan, Laura M.; González-Solís, Jacob

    2017-01-01

    Cape Verde petrel (Pterodroma feae) is currently considered near threatened, but little is known about its population size, breeding biology and on land threats, jeopardizing its management and conservation. To improve this situation, we captured, marked and recaptured (CMR) birds using mist-nets over 10 years; measured and sexed them; monitored up to 14 burrows, deployed GPS devices on breeders and analyzed activity data of geolocators retrieved from breeders in Fogo (Cape Verde). We set cat traps over the colony and investigated their domestic/feral origin by marking domestic cats from a nearby village with transponders, by deploying GPS devices on domestic cats and by performing stable isotope analyses of fur of the trapped and domestic cats. The population of Fogo was estimated to be 293 birds, including immatures (95% CI: 233–254, CMR modelling). Based on geolocator activity data and nest monitoring we determined the breeding phenology of this species and we found biometric differences between sexes. While monitoring breeding performance, we verified a still ongoing cat predation and human harvesting. Overall, data gathered from trapped cats without transponder, cats GPS trips and the distinct isotopic values between domestic and trapped cats suggest cats visiting the colony are of feral origin. GPS tracks from breeders showed birds left and returned to the colony using the sector NE of the islands, where high level of public lights should be avoided specially during the fledging period. Main threats for the Cape Verde petrel in the remaining breeding islands are currently unknown but likely to be similar to Fogo, calling for an urgent assessment of population trends and the control of main threats in all Cape Verde Islands and uplisting its conservation status. PMID:28369105

  12. A RARE CASE OF EXTENSIVE THROMBOSIS OF INFERIOR VENA CAVA, PORTAL VEIN, SPLENIC VEIN AND SUPERIOR MESENTRIC VEIN

    Directory of Open Access Journals (Sweden)

    Giridhar

    2015-03-01

    Full Text Available While the most common presentation of venous thromboembolic disease is deep vein thrombosis (DVT or pulmonary thromboembolism, rarer manifestations are thrombosis of jugular vein, cerebral sinus and inferior vena cava. Here we are presenting a rare case of inferior vena caval thrombosis with multiple thrombus in portal vein, splenic vein and superior mesenteric vein

  13. Cephalic vein aneurysm.

    Science.gov (United States)

    Faraj, Walid; Selmo, Francesca; Hindi, Mia; Haddad, Fadi; Khalil, Ismail

    2007-11-01

    Cephalic vein aneurysms are rare malformations that may develop in any part of the vascular system, and their history, presentation, and management vary depending on their site. The etiology of venous aneurysms remains unclear, although several theories have been elaborated. Venous aneurysms are unusual vascular malformations that occur equally between the sexes and are seen at any age; they can present as either a painful or a painless subcutaneous mass. No serious complications have been reported from upper extremity venous aneurysms. Surgical excision is the definitive management for most of these. The case reported here presented with a painless and mobile, soft, subcutaneous mass that caused only cosmetic concern.

  14. Historical Overview of Varicose Vein Surgery

    NARCIS (Netherlands)

    van den Bremer, Jephta; Moll, Frans L.

    2010-01-01

    Varicose veins are as old as Hippocrates. Varicose vein treatments come and go. Surgery for varicose vein disease is one of the commonest elective general surgical procedures. The history of varicose vein surgery has been traced. We note the first descriptions of varicose veins, and we particularly

  15. phenoVein - A software tool for leaf vein segmentation and analysis

    OpenAIRE

    Bühler, Jonas; Rishmawi, Louai; Pflugfelder, Daniel; Huber, Gregor; Scharr, Hanno; Hülskamp, Martin; Koornneef, Maarten; SCHURR, ULRICH; Jahnke, Siegfried

    2015-01-01

    phenoVein is a software tool dedicated to automated segmenting and analyzing images of leaf veins. It includes comfortable manual correction features. Advanced image filtering automatically emphasizes veins from background and compensates for local brightness inhomogeneities. Phenotypical leaf vein traits being calculated are total vein density, vein lengths and widths and skeleton graph statistics. For determination of vein widths, a model based vein edge estimation approach has been impleme...

  16. Reproducción y ultraestructura del huevo y larva de primer estadio de Gyriosomus kingi (Coleoptera: Tenebrionidae del desierto de Atacama

    Directory of Open Access Journals (Sweden)

    Jaime Pizarro-Araya

    2007-06-01

    Full Text Available Gyriosomus es un importante género chileno de Tenebrionidae, habitante del desierto costero del país. En este ambiente, las especies de Gyriosomus son un componente erémico y endémico de la entomofauna epígea. A pesar de la importancia ecológica que estas especies tienen en el desierto chileno, poco se conoce respecto de la morfología de los estados preimaginales. En este trabajo se describe la morfología del huevo y de la larva de primer estadio de G. kingi Reed, 1873, y se entregan algunos antecedentes acerca de la bionomía de la hembra. Los huevos y las larvas fueron obtenidos a partir de parejas mantenidas en condiciones de laboratorio. Los adultos fueron capturados durante la primavera del año 2002, en sitios costeros del Parque Nacional Llanos de Challe, localizado en la frontera sur del Desierto de Atacama (28°01’S; 71°03’W. El primer tercio del corión del huevo presenta celdas subhexagonales sin aeropilas. La larva es oligópoda y elongada. Su cápsula cefálica está fuertemente quitinizada y sus patas protorácicas son más largas y más gruesas que las restantes. Según observaciones de laboratorio, cada ovipostura incluye de siete a diez huevos cada vez, con un máximo de seis oviposturas por hembra. Los huevos son enterrados en el suelo, recubiertos con un mucílago que genera una película de arena-arcilla adherida al corión.Reproduction and ultrastructure of egg and first instar larvae of Gyriosomus kingi (Coleoptera: Tenebrionidae from the desert of Atacama. Gyriosomus is an important Chilean genus of Tenebrionidae, inhabiting the coastal desert of this country. in this environment, the Gyriosomus-species are both eremic and endemic components of the epigean entomofauna. Despite the ecological importance of these species in the Chilean desert, there is a lack of knowledge on the preimaginal stages of them. in this paper we describe the egg and first instar larval morphology of G. kingi Reed, 1873, along with

  17. Leiomyosarcoma of the renal vein

    Directory of Open Access Journals (Sweden)

    Lemos Gustavo C.

    2003-01-01

    Full Text Available Leiomyosarcoma of the renal vein is a rare tumor of complex diagnosis. We presented a case of renal vein leiomyosarcoma detected in a routine study. The primary treatment was complete surgical removal of the mass. In cases where surgical removal is not possible the prognosis is poor, with high rates of local recurrence and distant spread.

  18. Agenesis of the iliac veins.

    Science.gov (United States)

    Thomas, M L; Posniak, H V

    1984-01-01

    Three case reports of patients with the rare anomaly of agenesis of the iliac veins are presented. It is emphasised that full phlebographic investigation should be carried out in such patients before surgical treatment is considered. It is pointed out that surgical ablation may exacerbate the symptoms of leg swelling and varicose veins for which the patients seek advice.

  19. Infrared imaging of varicose veins

    Science.gov (United States)

    Noordmans, Herke Jan; de Zeeuw, Raymond; Verdaasdonk, Ruud M.; Wittens, Cees H. A.

    2004-06-01

    It has been established that varicose veins are better visualized with infrared photography. As near-infrared films are nowadays hard to get and to develop in the digital world, we investigated the use of digital photography of varicose veins. Topics that are discussed are illumination setup, photography and digital image enhancement and analysis.

  20. 10-Minute Conultation Varicose veins

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    A 55 year old woman presents with a history of tortuous veins on both legs and a related ache towards the end of the day.She finds these veins unsightly and would like to know whether she can have them treated.

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

    Energy Technology Data Exchange (ETDEWEB)

    Cuevas V, G. F.; Bravo S, J. M. [Global Nuclear Fuel - Americas, 3901 Castle Hayne Road, Wilmington, 28401 North Carolina (United States); Casillas, J. L., E-mail: gabriel.cuevas-vivas@gnf.co [General Electric Hitachi Nuclear Energy, 1989 Little Orchard St. Romm 239, San Jose, 95125 California (United States)

    2010-10-15

    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 Monicore{sup TM}. 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. 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.

  3. 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...

  4. 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.

  5. 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.

  6. ¿Qué tan verde es tu mercado?

    OpenAIRE

    Wilmar R. Olaya-González; Luz Adriana Gómez-Rodríguez

    2011-01-01

    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 m...

  7. Origen de los manantiales de la Costa Verde

    OpenAIRE

    Rojas, Rubén; Montoya, Modesto; Mamani, Enoc; Montoya, Eduardo; Baltuano, Oscar; Maguiña, José; Bedregal, Patricia; Coria, Lucy; Guerra, Alcides; Justo, Santiago; Churasacari, Tania

    2014-01-01

    Este trabajo trata de determinar el origen los manantiales de la playa Costa Verde, situada en los distritos de Barranco, Miraflores y Magdalena de la provincia de Lima, Perú. Esos manantiales, cerca y a nivel del mar, sobreviven al proceso de urbanización de los terrenos de cultivo, iniciado en la década de los años 70, el que mermó el nivel freático del acuífero de Lima e hizo desaparecer las filtraciones de agua en los acantilados. Para identificar el origen se ha efectuado análisis isotóp...

  8. Sagittal vein thrombosis caused by central vein catheter.

    Directory of Open Access Journals (Sweden)

    Feridoun Sabzi

    2015-03-01

    Full Text Available Cerebral venous thrombosis, including thrombosis of cerebral veins and major dural sinuses, is an uncommon disorder in the general population. However, it has a higher frequency among patients younger than 40 years of age, patients with thrombophilia, pregnant patients or those receiving hormonal contraceptive therapy or has foreign body such as catheter in their veins or arterial system. In this case report, we described clinical and radiological findings in a patient with protein C-S deficiency and malposition of central vein catheter.

  9. Using Candlers to Determine the Incubation Stage of Passerine Eggs (Utilización de Aluzadores para Determinar la Etapa de Incubación de Huevos de Paserinos)

    National Research Council Canada - National Science Library

    John T. Lokemoen; Rolf R. Koford

    1996-01-01

    .... Describimos el uso de aluzadores, en el campo, para determinar la etapa de incubación de huevos de Calamospiza melanocorys y otros paserinos con periodo de incubación entre 11-13 días. El aluzado se llevó a cabo...

  10. Composición química del huevo de Tortuga Golfina Lepidochelys olivacea (Testudines: Cheloniidae y su potencial como recurso alimenticio

    Directory of Open Access Journals (Sweden)

    María Isabel Castro-González

    2011-12-01

    Full Text Available Por su potencial como fuente alimenticia, se analizó la composición química de huevo de Lepidochelys olivácea en La Escobilla, Oaxaca, México. El Instituto de Ciencias del Mar y Limnología de la Universidad Nacional Autónoma de México proporcionó 250 muestras de huevo liofilizado de 25 tortugas, que se analizaron siguiendo métodos oficiales para humedad, cenizas, proteína, grasa, lípidos totales(LT y análisis microbiológicos; además de ácidos grasos(AG por cromatografía de gases, aminoácidos(AA, vitaminas y colesterol(col por HPLC. Los resultados fueron los siguientes: (g/100g humedad(4.7, cenizas(3.8, proteína(53.7 y grasa(47.4. AA esenciales (g aa/100g Proteína: Ile (4.4, Lys(6.6, Leu(7.4, Met+Cys (8.8, Phe+Tyr (10.8; retinol (340μg/100g, colecalciferol (5.9 μg/100g, tocoferol (8.6, tiamina (0.3 y riboflavina (1.1 (mg/100g. Y los de (LT, (AG y (Col se concentraron en tres grupos por peso de tortuga: (LT (44.3-48.7-49.1g/100g, (Col (518.4-522.5-728.7 mg/100g. Entonces se identificaron 17 AGSaturados, 8 AGMonoinsaturados y 11 AGPoliinsaturados. Los AGS más abundantes (mg/100g: C16:0 (485-1263, AGM: C16:1 (456-716, C18:1n-9c (904- 1754 y AGP: C20:4n-6 (105-217, EPA (48-103 y HA (97-189. También, existió diferencia significativa (Fisher, p<0.05 para (Col, AG totales, AGS, AGM, AGP y AG n-3 (EPA+DHA. No se detectó presencia de agentes microbiológicos. El huevo liofilizado de L. olivacea es una opción para el desarrollo de productos alimenticios por su proteína de alto valor biológico y ácidos grasos n-3.

  11. Vein matching using artificial neural network in vein authentication systems

    Science.gov (United States)

    Noori Hoshyar, Azadeh; Sulaiman, Riza

    2011-10-01

    Personal identification technology as security systems is developing rapidly. Traditional authentication modes like key; password; card are not safe enough because they could be stolen or easily forgotten. Biometric as developed technology has been applied to a wide range of systems. According to different researchers, vein biometric is a good candidate among other biometric traits such as fingerprint, hand geometry, voice, DNA and etc for authentication systems. Vein authentication systems can be designed by different methodologies. All the methodologies consist of matching stage which is too important for final verification of the system. Neural Network is an effective methodology for matching and recognizing individuals in authentication systems. Therefore, this paper explains and implements the Neural Network methodology for finger vein authentication system. Neural Network is trained in Matlab to match the vein features of authentication system. The Network simulation shows the quality of matching as 95% which is a good performance for authentication system matching.

  12. ¿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.

  13. 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)

  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. Neonatal renal vein thrombosis.

    Science.gov (United States)

    Brandão, Leonardo R; Simpson, Ewurabena A; Lau, Keith K

    2011-12-01

    Neonatal renal vein thrombosis (RVT) continues to pose significant challenges for pediatric hematologists and nephrologists. The precise mechanism for the onset and propagation of renal thrombosis within the neonatal population is unclear, but there is suggestion that acquired and/or inherited thrombophilia traits may increase the risk for renal thromboembolic disease during the newborn period. This review summarizes the most recent studies of neonatal RVT, examining its most common features, the prevalence of acquired and inherited prothrombotic risk factors among these patients, and evaluates their short and long term renal and thrombotic outcomes as they may relate to these risk factors. Although there is some consensus regarding the management of neonatal RVT, the most recent antithrombotic therapy guidelines for the management of childhood thrombosis do not provide a risk-based algorithm for the acute management of RVT among newborns with hereditary prothrombotic disorders. Whereas neonatal RVT is not a condition associated with a high mortality rate, it is associated with significant morbidity due to renal impairment. Recent evidence to evaluate the effects of heparin-based anticoagulation and thrombolytic therapy on the long term renal function of these patients has yielded conflicting results. Long term cohort studies and randomized trials may be helpful to clarify the impact of acute versus prolonged antithrombotic therapy for reducing the morbidity that is associated with neonatal RVT.

  16. A Vein Map Biometric System

    Directory of Open Access Journals (Sweden)

    Felix Fuentes

    2013-08-01

    Full Text Available There is increasing demand world-wide, from government agencies and the private sector for cutting-edge biometric security technology that is difficult to breach but userfriendly at the same time. Some of the older tools, such as fingerprint, retina and iris scanning, and facial recognition software have all been found to have flaws and often viewed negatively because of many cultural and hygienic issues associated with them. Comparatively, mapping veins as a human barcode, a new technology, has many advantages over older technologies. Specifically, reproducing a three-dimensional model of a human vein system is impossible to replicate. Vein map technology is distinctive because of its state-of-the-art sensors are only able to recognize vein patterns if hemoglobin is actively flowing through the person

  17. [Surgery of essential varicose veins].

    Science.gov (United States)

    Maraval, M

    1994-03-15

    Idiopathic varicose veins of the lower limbs are a frequent but benign disorder. Surgery is only a moment in the course of the disease. Although not the only treatment of essential varicose veins, surgery by an experienced team performing crossectomy, stripping by intussusception using a stripper, and phlebectomy gives fully satisfactory results, both to patient and to physician, in over 80% of cases. New techniques were recently developed that, at present, have not confirmed early hopes.

  18. Portal Vein Thrombosis in non cirrhotic patients

    NARCIS (Netherlands)

    M.C.W. Spaander (Manon)

    2010-01-01

    textabstractExtrahepatic portal vein thrombosis (EPVT) is the most common cause of portal hypertension in non- cirrhotic patients. EPVT has been defined as an obstruction of the extrahepatic portal vein with or without involvement of the intrahepatic portal veins. Although the portal vein accounts f

  19. Características técnico-sanitarias de expendios de carnes, pescados, aves y huevos de la ciudad de Tunja 2003

    Directory of Open Access Journals (Sweden)

    Fred Gustavo Manrique-Abril

    2011-02-01

    Full Text Available Se presenta una caracterización epidemiológica de los expendios de carnes, pescado y aves de Tunja en el año 2003, resultado del diagnóstico sanitario del municipio y las visitas adelantadas por la unidad de saneamiento. Al partir del compromiso que el sector salud tiene en el componente de ambiente, surge la necesidad de crear un sistema de vigilancia epidemiológica ambiental, cuya metodología y estrategia esté orientada hacia el conocimiento de los factores de riesgo ambientales a que están expuestos los grupos humanos, con el fin de determinar prioridades y orientar los recursos de salud disponibles en el desarrollo de intervenciones; es por eso que se implantó en Tunja la vigilancia de factores de riesgo del consumo en esta estrategia, la cual, incluye la de expendios decarnes y derivados, aves huevos y pescado; entonces, se usaron las actas de inspección sanitaria y se tabuló en EPIINFO 2002 para su análisis con SPSS 11,5. Así se realizó un análisis descriptivo a 173 establecimientos y se encontró que existen condiciones diversas de sanidad respecto de la estructura física, los procesos productivos y el producto para la venta; también hay un incumplimiento de normas técnico-sanitarias, en diferentes sectores de la ciudad, que se priorizan para el control por parte de la autoridad sanitaria. Al 75% de los establecimientos no cumplen con las condiciones higiénico sanitarias en cárnicos; el 66,6% no cuenta con las condiciones en establecimiento de venta de pescados ý el 52,5% delos establecimientos de venta de aves y huevos, no cumplen con las condiciones higiénico sanitarias para tal fin.

  20. Relevamiento y evaluación de parasitoides de huevo para el control de Cydia pomonella (Lepidoptera: Tortricidae y Grapholita molesta (Lepidotera: Tortricideae

    Directory of Open Access Journals (Sweden)

    Oscar E. TORTOSA

    2014-01-01

    Full Text Available Desde el mes de octubre hasta el mes de abril de los años 2005-2006 y 2006-2007 realizamos la búsqueda e identificación de parasitoides de huevo de Cydia pomonella (L. (Lepidoptera: Tortricidae y Grapholita molesta (Busck (Lepi - doptera: Tortricidae en tres sitios de Mendoza, Argentina. Trichogramma cacoe - ciae Marchal (Hymenoptera: Trichogrammatidae fue colectado en huevos de las dos especies plagas, en todos los sitios del relevamiento, durante los dos ciclos de colecta. Se encontró Trichogramma pretiosum Riley (Hymenoptera: Trichogram - matidae solo en un sitio en el mes de diciembre de 2005. En los años 2008 y 2009 T. cacoeciae fue criado, liberado y evaluada su eficiencia en el control de C. pomonella y G. molesta a través del daño en los frutos. Realizamos dos ensayos de evaluación a campo en dos cultivos de peral orgánicos, en uno de ellos el daño promedio en frutos por C. pomonella y G. molesta fue de 5,07% ± 0,82 (testigo sin liberación 15,60% ± 4,73 y en el otro ensayo el daño promedio de ambas plagas fue de 1,92% ± 0,50 (testigo sin liberación 11,34 % ± 1,13. En ambos casos existi - eron diferencias estadísticamente significativas entre tratamiento y testigo.

  1. 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

    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...

  2. 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).

  3. 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.

  4. (Lepus europaea capturadas en el Corredor Verde del Guadiamar

    Directory of Open Access Journals (Sweden)

    F. Carrascal Moreno

    2005-01-01

    Full Text Available Tras muestrear individuos de liebre en diversas zonas del Corredor Verde del Guadiamar, se procede a procesar muestras de tejidos de hígado y músculo para analizar sus contenidos en As, Cd, Pb, Cu y Zn, elementos químicos de especial significado ambiental, sobre todo en una zona de tradición minera, que además fue afectada por una catástrofe ambiental de gran magnitud por la rotura de una balsa de estériles (donde se acumulaban los restos del procesado del mineral con altas concentraciones de metales pesados en forma de lodos y aguas contaminadas, en abril del año 1998. Los resultados muestran una situación de mejora ambiental y de normalidad si se comparan con los valores encontrados en bibliografía especializada y los animales empleados como control.

  5. Evolución de huevos de Fasciola hepatica en el medio ambiente en Temuco,IX Región de Chile Development of Fasciola hepaticaeggs in outdoor temperatures in Temuco, southern Chile

    Directory of Open Access Journals (Sweden)

    G. VALENZUELA

    1998-01-01

    Full Text Available Se realizó un estudio de desarrollo de huevos de Fasciola hepatica en el medio ambiente en Temuco, Novena Región de Chile (38-41S y 72-25W. Las observaciones se realizaron desde abril de 1988 hasta junio de 1990. Los huevos obtenidos de vesículas de bovinos infectados con el parásito fueron colocados una vez al mes en vasos con agua destilada, en un sistema flotante. El sistema flotante se mantuvo en canales, en hábitat del parásito. Las muestras ueron examinadas una vez al mes hasta obtener el 50% de los huevos eclosionados. El tiempo de desarrollo más largo fue de 249 días en las muestras colocadas en abril de 1988 y el más corto, de 37 días, en las colocadas en enero de 1990. Los huevos colocados en el ambiente en marzo no eclosionaron hasta después del invierno, en octubre o noviembre. Se comprobó que los huevos no tienen un desarrollo paralelo. Se concluye que el desarrollo en el medio ambiente es influenciado por la temperatura ambiental, que varía de acuerdo a la latitud geográfica del hábitat, y que no hay eclosión de huevos a temperaturas medias inferiores a 10° C.A two-year study on the development of Fasciola hepatica eggs under outdoor conditions was carried out in Temuco, southern Chile (38-41S,72-25W. Eggs obtained from bile of infected cattle were placed in buckets in a medium of distilled water once a month, and examined at monthly intervals, until 50% had hatched. The shortest period of development was 37 days in eggs placed outside in January, 1990. The longest period required for development was 249 days for eggs placed outside in April 1988. Eggs placed outside in March failed to hatch in autumn and remained viable throughout the winter; most of them hatched in October or November. It was proved that liver fluke eggs do not have a parallel development and that the time taken to hatch vary within each sample. The hatching stage only occurred when the mean temperature was more than 10° C. It can be concluded

  6. La calcárea phosphórica en el mejoramiento de la calidad de la cáscara del huevo en gallinas ponedoras (Phosphoric calcarea on the impruvement of egg shell thickness quality in eggs laying hens

    Directory of Open Access Journals (Sweden)

    Estrada, C., Osmaida; Larrent, N., Marroquin, T. Angelita; Cos, D. Yusell, Bárzaga, G.

    2008-03-01

    Full Text Available ResumenEl presente trabajo se realizó en una granja de ponedora comercial raza White Leghorn (L33 en baterías. Con el objetivo de evaluar la utilización de la Calcárea phosphórica como estimulante para mejorar la calidad de la cáscara del huevo, se escogieron al azar un total de 50 jaulas con 4 gallinas por jaula, por un total de 200 animales; se establecieron dos grupos de estudio de 100 aves cada uno, control y experimental al que se le suministró: Calcárea phosphorica 12CH en solución hidroalcohólica, evaluando los siguientes indicadores: grosor de la cáscara, % huevos cascados, % de huevos rotos, y como indicador complementario, producción de huevos. Para el procesamiento estadístico de los datos se utilizó la prueba de hipótesis para dos proporciones, mediante el paquete estadístico Statistic versión 6.0 para Windows. Se pudo evidenciar que la producción total de huevos, grosor de la cáscara y % de huevos rotos y cascados tuvo mejores resultados en el grupo experimental. Se concluye que la aplicación de la Calcárea phosphorica influye positivamente sobre los indicadores previamente mencionados.Abstract This work was done at the layer farm, the breed exploited being the White Leghorn (L33 in battery.With the objective to evaluate the homeopathic remedy “Calcárea Phosphorica” 12CH in hydro alcoholic solution was applied at a dose of 5 drops or 0.25ml per animal in drinking water. 50 cages with 4 animals per cage were selected randomly, giving a total of 200 animals, 25 control cages and 25 subject cages. The following indicators were observed and monitored: egg shell thickness, cracked egg shell percentage, broken egg shell percentage, the final eggs production, % of broken eggs, Statistic package version 6.0 was used for statistical processing Hypothesis test was made for two proportions. Were observed better results in the experimental group with relation of egg shell thickness, cracked egg shell percentage, broken

  7. Curvas de eliminación de huevos por gramo de materia fecal de parásitos gastrointestinales en Búfalos de agua (Bubalus bubalis del Magdalena Medio Colombiano

    Directory of Open Access Journals (Sweden)

    German Alonso Prada Sanmiguel

    2010-06-01

    Full Text Available El presente estudio fue realizado en la hacienda bufalera La Suiza, municipio de Puerto Nare Antioquia en el Magdalena Medio Colombiano. El objetivo del estudio fue determinar las variaciones en la eliminación de huevos por gramo (hpg de materia fecal de parásitos gastrointestinales durante los meses de enero a diciembre a un total de 150 Búfalos de agua (Bubalus bubalis, los cuales fueron divididos en tres grupos de cincuenta animales: menores de 12 meses de edad, de 13 a 36 meses de edad y mayores a 37 meses de edad seleccionados al azar de un inventario total de 4.200 Búfalos. La materia fecal se recolectó directamente del recto mes a mes durante un año, luego fue procesada mediante la técnica de Mc-Master modificada por Scmidht para el respectivo conteo de huevos. Se utilizó el programa Statistix para calcular la estadística descriptiva, la correlación entre las variables climáticas (Temperatura, Brillo Solar y Precipitación, y cada grupo de parásito; el análisis de varianza fue calculado en Microsoft Excel. Se establecieron las curvas de eliminación anual de huevos por gramo de materia fecal del orden Strongylida y los géneros Strongyloides, Toxocara y Eimeria. En el grupo de animales menores de 12 meses de edad los huevos de parásitos más constantes durante todo el año fueron Strongyloides spp. y ooquistes de Eimeria spp; en los grupos de 13 a 36 meses de edad y mayores de 37 meses, los parásitos más constantes fueron del orden Strongylida y del género Eimeria spp, siendo los huevos de Trichuris spp. Los huevos de menor eliminación; en cuanto a la eliminación de hpg de Toxocara vitulorum, sólo se encontró en el grupo menor de 12 meses de edad con una única presentación en los meses de enero, junio y agosto.

  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

    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. Grain-size analysis of sediment cores collected in 2009 offshore from Palos Verdes, California

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This part of the data release includes grain-size analysis of sediment cores collected in 2009 offshore of Palos Verdes, California. It is one of seven files...

  11. Field Plot Points for Mesa Verde National Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — The Mesa Verde National Park Classification Releve Location zip shapefile (meveplot.zip) was developed as a Geographic Information Systems (GIS) product to represent...

  12. Graphical representations of data from sediment cores collected in 2009 offshore from Palos Verdes, California

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This part of the data release includes graphical representation (figures) of data from sediment cores collected in 2009 offshore of Palos Verdes, California. This...

  13. Name, location, and length of sediment cores collected in 2009 offshore from Palos Verdes, California

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This part of the data release is a spreadsheet including the name, location, and length of sediment cores collected in 2009 offshore from Palos Verdes, California....

  14. Raw computed tomography (CT) images of sediment cores collected in 2009 offshore from Palos Verdes, California

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This part of the data release includes raw computed tomography (CT) images of sediment cores collected in 2009 offshore of Palos Verdes, California. It is one of...

  15. Graphical representations of data from sediment cores collected in 2009 offshore from Palos Verdes, California

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This part of the data release includes graphical representation (figures) of data from sediment cores collected in 2009 offshore of Palos Verdes, California. This...

  16. Raw computed tomography (CT) images of sediment cores collected in 2009 offshore from Palos Verdes, California

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This part of the data release includes raw computed tomography (CT) images of sediment cores collected in 2009 offshore of Palos Verdes, California. It is one of...

  17. Accuracy Assessment Points for Mesa Verde National Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — The Mesa Verde National Park Accuracy Assessment Observation Location zip shapefile (meveaa.zip) was developed as a Geographic Information Systems (GIS) product in...

  18. Detección de alérgenos de huevo en fideos secos por método de elisa Detection of egg allergens in dried pasta using elisa method

    Directory of Open Access Journals (Sweden)

    María Julieta Binaghi

    2012-06-01

    Full Text Available Debido a la inminente incorporación al Código Alimentario Argentino del artículo 235 séptimo que contempla la rotulación de alérgenos en alimentos, resulta necesario realizar el control de productos comerciales para detectar la posible presencia de proteínas alergénicas. En la elaboración de fideos secos y de productos a base de harina de trigo pan y/o sémola de trigo candeal es probable la presencia de alérgenos de huevo por contaminación cruzada. El objetivo del presente trabajo fue determinar por un método de ELISA la posible contaminación con proteínas de huevo en productos elaborados con harina de trigo pan y/o sémola de trigo candeal provistos por una industria para verificar una posible contaminación con proteínas de huevo y analizar muestras comerciales con leyendas precautorias. Se analizaron diecinueve productos a base de harina de trigo pan y/o sémola de trigo candeal provistos por una industria y nueve muestras de fideos secos comerciales. El alérgeno huevo se analizó con kit de huevo de la marca r-biopharm. Las muestras se analizaron por duplicado siguiendo el protocolo de trabajo del kit. Entre las muestras provistas por la industria había: productos elaborados en línea cercana a elaboración de pastas con huevo en los que se obtuvieron valores por debajo del límite de cuantificación del kit; productos elaborados con bajo porcentaje de productos molidos que pudieron elaborarse con huevo, en los que se obtuvieron cantidades muy bajas de alérgeno huevo (menores a 5 ppm y productos elaborados con alto porcentaje de productos molidos que pudieron haberse elaborado con huevo en los que se obtuvieron concentraciones mayores de huevo (mayores a 5 ppm de huevo en polvo. En las muestras comerciales hubo cinco que presentaron concentraciones por debajo o igual al límite de cuantificación mientras que en las otras cuatro se obtuvieron concentraciones entre 5 y 12 ppm de huevo en polvo con el kit de r-biopharm. De

  19. 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)

  20. Minimally invasive treatments for perforator vein insufficiency.

    Science.gov (United States)

    Kuyumcu, Gokhan; Salazar, Gloria Maria; Prabhakar, Anand M; Ganguli, Suvranu

    2016-12-01

    Incompetent superficial veins are the most common cause of lower extremity superficial venous reflux and varicose veins; however, incompetent or insufficient perforator veins are the most common cause of recurrent varicose veins after treatment, often unrecognized. Perforator vein insufficiency can result in pain, skin changes, and skin ulcers, and often merit intervention. Minimally invasive treatments have replaced traditional surgical treatments for incompetent perforator veins. Current minimally invasive treatment options include ultrasound guided sclerotherapy (USGS) and endovascular thermal ablation (EVTA) with either laser or radiofrequency energy sources. Advantages and disadvantages of each modality and knowledge on these treatments are required to adequately address perforator venous disease.

  1. 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).

  2. Conocimientos, opiniones y prácticas respecto al huevo de gallina en familias de comunidades urbana-rural, Costa Rica Knowledge, opinions and practices related to chicken eggs in families of urban-rural communities, Costa Rica

    Directory of Open Access Journals (Sweden)

    Marcela Peña Vázquez

    2011-06-01

    Full Text Available Objetivo: Indagar sobre los conocimientos, opiniones y prácticas de la población respecto al consumo de huevo de gallina, con el objetivo de poder orientar los mensajes que se dirigen a la población en general, para mejorar el uso del mismo en los hogares. Materiales y método: Estudio descriptivo que aplica técnicas cualitativas y se apoya en variables cuantitativas. La población está compuesta por familias que residen en los distritos Central de Alajuela o Piedades de Santa Ana. Se empleó una muestra, seleccionada a conveniencia, 23 familias de Alajuela Centro y 29 de Piedades de Santa Ana. Además se trabajó con el personal de salud que labora en los Equipos Básicos de Atención en Salud. Resultados: Con respecto a conocimientos, las participantes conocen que el huevo es fuente de proteínas y vitaminas. Prefieren los huevos caseros y de cáscara de color oscuro; sin embargo consumen más los huevos industriales. Las razones de consumir huevo son la costumbre, buen sabor, versatilidad, rapidez y facilidad para prepararlo, además de un precio accesible. A nivel nutricional comparan el huevo con el aguacate y con alimentos pertenecientes al grupo de las carnes. Respecto a las prácticas, el huevo se consume en todos los tiempos de comida y principalmente en frituras. Discusión: no existen diferencias marcadas entre los conocimientos, prácticas y opiniones, entre población urbana y rural estudiada. Los conocimientos relacionados con el huevo tanto en las comunidades y el personal de salud son generales y difieren entre sí, dejando entrever una falta de información en ambos gruposObjective: To inquire into the knowledge, views and practices of the population regarding the consumption of chicken eggs, in order to target messages that go to the general population, to improve the use of the same household. Materials and Methods: A descriptive study applies techniques based on qualitative and quantitative variables. The population

  3. Extrahepatic Portal Vein Obstruction and Portal Vein Thrombosis in Special Situations: Need for a New Classification

    Science.gov (United States)

    Wani, Zeeshan A.; Bhat, Riyaz A.; Bhadoria, Ajeet S.; Maiwall, Rakhi

    2015-01-01

    Extrahepatic portal vein obstruction is a vascular disorder of liver, which results in obstruction and cavernomatous transformation of portal vein with or without the involvement of intrahepatic portal vein, splenic vein, or superior mesenteric vein. Portal vein obstruction due to chronic liver disease, neoplasm, or postsurgery is a separate entity and is not the same as extrahepatic portal vein obstruction. Patients with extrahepatic portal vein obstruction are generally young and belong mostly to Asian countries. It is therefore very important to define portal vein thrombosis as acute or chronic from management point of view. Portal vein thrombosis in certain situations such as liver transplant and postsurgical/liver transplant period is an evolving area and needs extensive research. There is a need for a new classification, which includes all areas of the entity. In the current review, the most recent literature of extrahepatic portal vein obstruction is reviewed and summarized. PMID:26021771

  4. Extrahepatic portal vein obstruction and portal vein thrombosis in special situations: Need for a new classification

    Directory of Open Access Journals (Sweden)

    Zeeshan A Wani

    2015-01-01

    Full Text Available Extrahepatic portal vein obstruction is a vascular disorder of liver, which results in obstruction and cavernomatous transformation of portal vein with or without the involvement of intrahepatic portal vein, splenic vein, or superior mesenteric vein. Portal vein obstruction due to chronic liver disease, neoplasm, or postsurgery is a separate entity and is not the same as extrahepatic portal vein obstruction. Patients with extrahepatic portal vein obstruction are generally young and belong mostly to Asian countries. It is therefore very important to define portal vein thrombosis as acute or chronic from management point of view. Portal vein thrombosis in certain situations such as liver transplant and postsurgical/liver transplant period is an evolving area and needs extensive research. There is a need for a new classification, which includes all areas of the entity. In the current review, the most recent literature of extrahepatic portal vein obstruction is reviewed and summarized.

  5. Datos biológicos de Doru luteipes (Dermaptera: Forficulidae en plantaciones de caña de azúcar y consumo de huevos de Diatraea saccharalis (Lepidoptera: Crambidae en condiciones de laboratorio

    Directory of Open Access Journals (Sweden)

    Gladys M. ROMERO SUELDO

    2009-01-01

    Full Text Available Diatraea saccharalis (Fabr. es considerada la principal plaga de la caña de azúcar en el noroeste argentino. El dermáptero Doru luteipes (Scudder desarrolla importantes poblaciones en dicho cultivo y ha sido descrito como predador de plagas en maíz, algodón y coles. El objetivo de este trabajo fue brindar información sobre algunos aspectos biológicos y estimar la capacidad de predación de las ninfas de Doru luteipes, a través de la tasa de consumo de huevos de Diatraea saccharalis. Se realizaron observaciones de campo y ensayos de laboratorio, en estos últimos se colocaron individualmente en tubos de ensayo, 50 ninfas de D. luteipes recién eclosionadas y se les ofrecía diariamente cien huevos de la plaga. La proporción de sexos de D. luteipes en campo fue de aproximadamente 1:1 y sus posturas presentaron una media de 31 huevos, con una tasa de emergencia cercana al 95%. El período de incubación se prolongó entre 6 y 10 días y el desarrollo de los estadios ninfales promedió los 37,6 días. Las ninfas pasaron por cuatro estadios y consumieron una media de 591,3 huevos de D. saccharalis. Estos resultados sugieren que D. luteipes desempeña un papel importante en el control natural de las poblaciones de D. saccharalis, por lo tanto, su presencia debería tenerse en cuenta al diseñar estrategias para controlar esta plaga.

  6. Producción de huevo, calidad del cascarón y rentabilidad en gallinas de primer ciclo con niveles de calcio y fósforo disponible

    Directory of Open Access Journals (Sweden)

    Víctor Manuel Valdés Narváez

    2011-01-01

    Full Text Available Para evaluar el efecto del calcio y fósforo en la calidad del cascarón del huevo se realizó un experimento con 480 gallinas Hy- Line W-36. Se usaron tres niveles de calcio (Ca (3.2, 4.2 y 5.2 % y cuatro de fósforo disponible (Pd (0.15, 0.20, 0.25 y 0.30 %. Se encontró interacción (P<0.05 del Ca y Pd en consumo de alimento (CAL y masa de huevo (MH. Con el nivel de Ca de 5.2 % y de Pd (0.15 % disminuyó el CAL (96.7 g y MH (48.7 g. El porcentaje de postura y MH fueron menores (P<0.05 con 0.15 % que con 0.3 % de Pd. La conversión alimenticia se afectó (P<0.05 por el nivel de Pd, obteniendo la mejor con 0.3 % (1.94, seguida por 0.20 % (1.96, 0.15 % (1.98, y 0.25 % (1.99. El peso del huevo fue mayor (P<0.05 en 0.7 y 0.8 g con 3.2 % que con 4.2 y 5.2 % de Ca, respectivamente. La gravedad específica se mejoró (P<0.05 al incrementar el calcio (1.080 vs 1.081 y 1.082 en la dieta. Se concluye que para buena calidad del cascarón es necesario 4.2 % de Ca, pero se debe incrementar de manera proporcional el fósforo disponible. El nivel de 0.15 % de fósforo disponible no es suficiente para obtener buena producción de huevo y conversión alimenticia.

  7. Péptidos antihipertensivos derivados de proteínas de leche y huevo Peptides with antihypertensive activity from milk and egg proteins

    Directory of Open Access Journals (Sweden)

    A. Aleixandre

    2008-08-01

    Full Text Available Algunos fragmentos de proteínas alimentarias, una vez liberados mediante hidrólisis, pueden producir un descenso del tono arterial. Son importantes los hidrolizados y péptidos provenientes de proteínas lácteas. Destacan los hidrolizados de caseína con tripsina, y los productos antihipertensivos obtenidos por fermentación de la leche con Lactobacillus helveticus. Estos productos contienen secuencias como Val-Pro-Pro (VPP e Ile-Pro-Pro (IPP, que inhiben la enzima convertidora de la angiotensina (ECA. Algunas cepas de Enterococcus faecalis también producen péptidos antihipertensivos inhibidores de la ECA. Entre estos péptidos destaca la secuencia LHLPLP. Existen asimismo péptidos e hidrolizados antihipertensivos derivados de proteínas de huevo. Podemos citar las secuencias FRADHPFL (ovokinina y RADHPF (ovokinina 2-7 con actividad vasodilatadora endotelio-dependiente, y algunos hidrolizados de clara de huevo que inhiben la ECA. Los productos mencionados podrían utilizarse como ingredientes en alimentos funcionales. Algunos han probado ya su eficacia y seguridad en pacientes hipertensos.Antihypertensive hydrolysates and peptides have been isolated from food proteins. Among them, there are of particular interest the antihypertensive casein hydrolysates, and some antihypertensive products obtained when milk was fermented by Lactobacillus helveticus. The sequences Val-Pro-Pro (VPP and Ile-Pro-Pro (IPP, with angiotensin-converting enzyme (ACE inhibitory activity, have been isolated from these fermented products. Selected Enterococcus faecalis strains can also produce milk derived peptides with ACE inhibitory and antihypertensive activities. The main of them is the sequence LHLPLP. Some studies also describe the production of antihypertensive hydrolysates and peptides from egg proteins. The sequences FRADHPFL (ovokinin and RADHPFL (ovokinin 2-7, that have shown endothelium-dependent vasodilator activity, were obtained at first. Some egg white

  8. Herramienta de educación nutricional para alergicos a huevo y proteína de leche de vaca de edad pediátrica®

    Directory of Open Access Journals (Sweden)

    Ismael San Mauro Martín

    2014-05-01

    Full Text Available Introducción: La alergia alimentaria afecta a gran parte de la población y sus cifras siguen aumentando. Aunque, se esta avanzando en el conocimiento de la patología, los alérgicos encuentran grandes dificultades para llevar una vida normal, especialmente en lo relativo a su alimentación. Hasta ahora el colectivo no contaba con herramientas prácticas que les ayudasen en la elaboración diaria de una dieta equilibrada, como existen para la población en general, en forma de pirámides y guías alimentarias. Con este trabajo se ha cubierto esta necesidad para dos de las alergias más prevalentes en los primeros años de vida. Objetivos: Recopilar información sobre la alergia a la proteína de leche de vaca (APLV y huevo, para diseñar una pirámide alimenticia para estos pacientes, basada en los consensos, recomendaciones y guías científicas. Resultados: Tras comprobar la inexistencia de un trabajo similar, se diseñaron pirámides alimenticias para alérgicos a huevo y APLV, adaptadas a cada uno de ellos, así como una pirámide conjunta a ambas alergias. Además se incluyeron recomendaciones basicas para la alimentación saludable en general y, en particular, con interés especial para el colectivo (higiene alimentaria, aditivos alimentarios, productos de cosmética, medicamentos, etc. Conclusiones: Debido a la importancia que la nutrición adquiere en la infancia y las dificultades subyacentes a este colectivo, poder planificar adecuadamente la alimentación es muy importante pues puede prevenir accidentes y carencias nutricionales a largo plazo. Por ello, facilitar herramientas gráficas y prácticas para este fin, es de gran importancia comunitaria y medico-científico, y es el resultado de este trabajo.

  9. Angiosarcoma of common iliac vein

    Science.gov (United States)

    Ibis, Kamuran; Usta, Ufuk; Cosar, Rusen; Ibis, Cem

    2015-01-01

    Angiosarcoma is a rare malignant tumour of endothelial cells. Primary angiosarcoma of venous origin is extremely rare, and has a very poor prognosis. A 63-year-old woman with retroperitoneal mass underwent en bloc resection on a part of iliac vein followed by adjuvant radiotherapy. No recurrence was detected during 3 years of follow-up. PMID:25596292

  10. 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.

  11. Clinical studies on inferior right hepatic veins

    Institute of Scientific and Technical Information of China (English)

    Xue Xing; Hong Li; Wei-Guo Liu

    2007-01-01

    BACKGROUND:Many small veins are called accessory, short hepatic veins in addition to the right, middle and left hepatic veins. The size of these veins varied from a pinhole to 1 cm; the size of inferior right hepatic veins (IRHVs) is thicker than that of short hepatic veins or more than 1 cm occasionally. Adults have a higher incidence rate of the IRHV. DATA SOURCES:A literature search of the PubMed database was conducted and research articles were reviewed. RESULTS:The size of IRHVs is related to the size of the right hepatic vein, i.e. the larger the diameter of the right hepatic vein, the smaller the diameter of the IRHVs, and vice versa. The IRHVs are divided into superior, medial and inferior groups, separately named the superior, medial and inferior right hepatic veins according to the position of the IRHV entering the inferior vena cava. The superior right hepatic vein mainly drains the superior part of segmentⅦ, and the medial right hepatic vein drains the middle part of segmentⅦ. A thicker IRHV mainly drains segmentⅥ and the inferior part of segmentⅦ and a thinner IRHV drains the inferior part of segmentⅤ. CONCLUSIONS:The clinical signiifcance of these studies on IRHVs is varied: (1) Hepatic caudate lobe resection could be introduced after study on the veins of that lobe. (2) It is very important to identify the draining region of the IRHV for guiding hepatic segmentectomy. The postero-inferior area of the right lobe can be preserved along with the hypertrophic IRHV even if the entire main right hepatic vein is resected during segmentectomy ofⅦ andⅧwith right hepatic vein resection for patients with primary liver cancer. (3) The ligation of the major hepatic vein for the treatment of juxtahepatic vein injury is recommended because of severe hemorrhagic shock and dififculty in

  12. Common femoral vein reconstruction using internal jugular vein after blast injury.

    Science.gov (United States)

    Holt, Andrew M; West, Charles A; Davis, James A; Gilani, Ramyar; Askenasy, Eric

    2014-10-01

    Common femoral vein traumatic injuries are rare. Surgical management is controversial and by nature case specific. In this report, we present an unusual case of an isolated common femoral vein injury from a gunshot blast repaired with an interposition internal jugular vein bypass. To our knowledge, this is the first reported case of an isolated common femoral vein reconstructed in this manner.

  13. Who Is at Risk for Varicose Veins?

    Science.gov (United States)

    ... may raise your risk for varicose veins. The normal wear and tear of aging may cause the valves in your veins to weaken and not work well. Gender Women tend to get varicose veins more often than men. Hormonal changes that occur during puberty, pregnancy, and menopause (or ...

  14. Cephalic veins in coronary artery bypass surgery

    DEFF Research Database (Denmark)

    Licht, P; Jakobsen, Erik; Lerbjerg, G

    1996-01-01

    Various alternative conduits for aortocoronary bypass grafting have been suggested when the saphenous vein quality is inadequate. During a 10-year period we have used the cephalic vein in 39 patients. Eighteen entered an angiographic follow-up study. A total of 31 arm vein grafts were used with 4...

  15. Radiological aspects of portal vein embolization

    NARCIS (Netherlands)

    van Lienden, K.P.

    2012-01-01

    This thesis deals with liver regeneration after portal vein embolization (PVE) or portal vein ligation (PVL). Several aspects of these portal vein occlusion techniques are evaluated in clinical and experimental studies. In addition, the role of dynamic liver function tests and CT-volumetry in risk a

  16. Cephalic veins in coronary artery bypass surgery

    DEFF Research Database (Denmark)

    Licht, P; Jakobsen, Erik; Lerbjerg, G;

    1996-01-01

    Various alternative conduits for aortocoronary bypass grafting have been suggested when the saphenous vein quality is inadequate. During a 10-year period we have used the cephalic vein in 39 patients. Eighteen entered an angiographic follow-up study. A total of 31 arm vein grafts were used with 4...

  17. 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.

  18. “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.

  19. 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.

  20. A New Multimodal Biometric System Based on Finger Vein and Hand Vein Recognition

    OpenAIRE

    Randa Boukhris Trabelsi; Alima Damak Masmoudi; Dorra Sellami Masmoudi

    2013-01-01

    As a reliable and robust biological characteristic, the vein pattern increases more and more the progress in biometric researches. Generally, it was shown that single biometric modality recognition is not able to meet high performances. In this paper, we propose a new multimodal biometric system based on fusion of both hand vein and finger vein modalities. For finger vein recognition, we employ the Monogenic Local Binary Pattern (MLBP), and for hand vein recognitionan Improved Gaussian Matche...

  1. Recurrence of superficial vein thrombosis in patients with varicose veins.

    Science.gov (United States)

    Karathanos, Christos; Spanos, Konstantinos; Saleptsis, Vassileios; Tsezou, Aspasia; Kyriakou, Despina; Giannoukas, Athanasios D

    2016-08-01

    To investigate which factors other than history of superficial vein thrombosis (SVT) are associated with recurrent spontaneous SVT episodes in patients with varicose veins (VVs). Patients with a history of spontaneous SVT and VVs were followed up for a mean period of 55 months. Demographics, comorbidities, and thrombophilia screening test were analyzed. Patients were grouped according to the clinical-etiology-anatomy-pathophysiology classification. A multiple logistic regression analysis with the forward likelihood ratio method was undertaken. Thirteen patients out of 97 had a recurrence SVT episode during the follow-up period. All those patients were identified to have a thrombophilia defect. Protein C and S, antithrombin, and plasminogen deficiencies were more frequently present in patients without recurrence. Gene mutations were present in 38% in the nonrecurrence group and 77% in the recurrence group. After logistic regression analysis, patients with dislipidemia and mutation in prothrombin G20210A (FII) had an increased risk for recurrence by 5.4-fold and 4.6-fold, respectively. No deep vein thrombosis or pulmonary embolism occurred. Dislipidemia and gene mutations of F II are associated with SVT recurrence in patients with VVs. A selection of patients may benefit from anticoagulation in the short term and from VVs intervention in the long term. © The Author(s) 2015.

  2. Estudios sobre el manejo e incubación de huevos del pargo flamenco Lutjanus guttatus (Pisces, Lutjanidae Studies in egg handling and incubation in the spotted rose snapper Lutjanus guttatus (Pisces Lutjanidae

    Directory of Open Access Journals (Sweden)

    Leonardo Ibarra-Castro

    2012-04-01

    Full Text Available La manipulación y la incubación de huevos de peces son procedimientos simples pero importantes en las tecnologías de producción de juveniles. Para determinar prácticas apropiadas de manejo y de incubación de los huevos del pargo flamenco Lutjanus guttatus (Steindachner, 1869, se realizaron tres experimentos en tanques cilindro-cónicos de fibra de vidrio de 100 L. Los huevos fueron incubados con y sin flujo de agua (30%/h, a dos densidades (250 huevos/L y 1000 huevos/L y con o sin tratamiento profiláctico de formalina 10 ppm por una hora previo a la incubación. Los porcentajes de eclosión total y larvas vivas normales (larvas viables al momento de la eclosión no fueron diferentes significativamente entre los tratamientos con flujo y sin flujo. Mientras que los porcentajes de larvas viables al momento de la eclosión y a las 48 h post-eclosión mostraron significativamente mejores resultados en el tratamiento sin flujo de agua. En la incubación a dos densidades todos los índices analizados fueron significativamente mejores en la densidad de 250 huevos/L, excepto en larvas viables a las 48 h post-eclosión. Los huevos con y sin tratamiento profiláctico, no presentaron diferencias significativas para todas las variables de supervivencia al momento de la eclosión y a las 48 h post-eclosión. La longitud total de larvas fue diferente significativamente entre cada uno de los tratamientos al momento de la eclosión y a las 48 h, excepto en la incubación sin flujo de agua. Las larvas de mayor tamaño se obtuvieron en el experimento con sobre tratamiento profiláctico.Egg handling and incubation are short but important procedures in juvenile fish production technologies. To determine appropriate practices for egg handling and incubation in the spotted rose snapper Lutjanus guttatus (Steindachner, 1969, three experiments were carried out in 100-L fiberglass conical cylinder tanks. Eggs were incubated with and without water flow (30% volume

  3. Influências da Preocupação Ambiental e do Ceticismo frente à Propaganda no Consumo de Produtos Verdes

    National Research Council Canada - National Science Library

    Dirceu da Silva; André Torres Urdan; Edgard Monforte Merlo; Karina Tonelli Silveira Dias

    2015-01-01

    ... 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).

  4. Management of varicose veins and venous insufficiency.

    Science.gov (United States)

    Hamdan, Allen

    2012-12-26

    Chronic venous disease, reviewed herein, is manifested by a spectrum of signs and symptoms, including cosmetic spider veins, asymptomatic varicosities, large painful varicose veins, edema, hyperpigmentation and lipodermatosclerosis of skin, and ulceration. However, there is no definitive stepwise progression from spider veins to ulcers and, in fact, severe skin complications of varicose veins, even when extensive, are not guaranteed. Treatment options range from conservative (eg, medications, compression stockings, lifestyle changes) to minimally invasive (eg, sclerotherapy or endoluminal ablation), invasive (surgical techniques), and hybrid (combination of ≥1 therapies). Ms L, a 68-year-old woman with varicose veins, is presented. She has had vein problems over the course of her life. Her varicose veins recurred after initial treatment, and she is now seeking guidance regarding her current treatment options.

  5. [ENDOVENOUS LASER TREATMENT FOR VARICOSE VEINS].

    Science.gov (United States)

    Tezuka, Masahiro; Kanaoka, Yuji; Ohki, Takao

    2015-05-01

    Varicose veins are a common condition attecting approximately 10 million patients in Japan. The main cause of varicose veins is reflux of the saphenous vein, and conventional treatment for several decades was stripping the affected saphenous vein and phlebectomy. Endovenous laser treatment (EVLT) is a less-invasive treatment method in which the saphenous vein is ablated with a laser under local anesthesia. EVLT has been approved by the Japanese Ministry of Health, Labor and Welfare since 2011, and we have performed EVLT on 5,160 legs with saphenous insufficiency with no severe complications including deep vein thrombosis except for one case of arteriovenous fistula. EVLT appears to be a safe, effective treatment option for varicose veins with saphenous insufficiency.

  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. Deep vein thrombosis in pregnancy.

    Science.gov (United States)

    Colman-Brochu, Stephanie

    2004-01-01

    This article provides a review of the incidence, pathophysiology, and treatment of deep vein thrombosis (DVT) in pregnancy, a rare but serious complication of pregnancy. The incidence of DVT in pregnancy varies widely, but it is a leading cause of maternal morbidity in both the United States and the United Kingdom. Risk factors during pregnancy include prolonged bed rest or immobility, pelvic or leg trauma, and obesity. Additional risk factors are preeclampsia, Cesarean section, instrument-assisted delivery, hemorrhage, multiparity, varicose veins, a previous history of a thromboembolic event, and hereditary or acquired thrombophilias such as Factor V Leiden. Heparin is the anticoagulant of choice to treat active thromboembolic disease or to administer for thromboprophylaxis, but low molecular-weight heparin is being used with increasing frequency in the pregnant woman. Perinatal nurses should be aware of the symptoms, diagnostic tools, and treatment options available to manage active thrombosis during pregnancy and in the intrapartum and postpartum periods.

  8. FINGER-VEIN RECOGNITION SYSTEMS

    Directory of Open Access Journals (Sweden)

    A.Haritha Deepthi

    2015-10-01

    Full Text Available As the Person‟s/Organization‟s Private information‟s are becoming very easy to access, the demand for a Simple, Convenient, Efficient, and a highly Securable Authentication System has been increased. In considering these requirements for data Protection, Biometrics, which uses human physiological or behavioral system for personal Identification has been found as a solution for these difficulties. However most of the biometric systems have high complexity in both time and space. So we are going to use a Real time Finger-Vein recognition System for authentication purposes. In this paper we had implemented the Finger Vein Recognition concept using MATLAB R2013a. The features used are Lacunarity Distance, Blanket Dimension distance. This has more accuracy when compared to conventional methods.

  9. Mortality after portal vein embolization

    Science.gov (United States)

    Lee, Eung Chang; Park, Sang-Jae; Han, Sung-Sik; Park, Hyeong Min; Lee, Seung Duk; Kim, Seong Hoon; Lee, In Joon; Kim, Hyun Beom

    2017-01-01

    Abstract Portal vein embolization (PVE) is increasingly performed worldwide to reduce the possibility of liver failure after extended hepatectomy, by inducing future liver remnant (FLR) hypertrophy and atrophy of the liver planned for resection. The procedure is known to be very safe and to have few procedure-related complications. In this study, we described 2 elderly patients with Bismuth–Corlette type IV Klatskin tumor who underwent right trisectional PVE involving the embolization of the right portal vein, the left medial sectional portal branch, and caudate portal vein. Within 1 week after PVE, patients went into sepsis combined with bile leak and died within 1 month. Sepsis can cause acute liver failure in patients with chronic liver disease. In this study, the common patient characteristics other than sepsis, that is, trisectional PVE; chronic alcoholism; aged >65 years; heart-related comorbidity; and elevated serum total bilirubin (TB) level (7.0 mg/dL) at the time of the PVE procedure in 1 patient, and concurrent biliary procedure, that is, percutaneous transhepatic biliary drainage in the other patient might have affected the outcomes of PVE. These cases highlight that PVE is not a safe procedure. Care should be taken to minimize the occurrence of infectious events because sepsis following PVE can cause acute liver failure. Additionally, prior to performing PVE, the extent of PVE, chronic alcohol consumption, age, comorbidity, long-lasting jaundice, concurrent biliary procedure, etc. should be considered for patient safety. PMID:28178122

  10. 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 that...

  11. O arquipélago “literopintado”: escritura literária de autoria feminina em Cabo Verde

    Directory of Open Access Journals (Sweden)

    Simone Caputo Gomes

    2010-12-01

    Full Text Available Este artigo tem por objetivo estudar a representação de Cabo Verde pela literatura de autoria feminina, que retrata – lê, pinta, desenha, esculpe, escreve, imagina – suas belas paisagens, seu cotidiano popular, seus perfis de mulher, sua riqueza cultural.Palavras-chave: Literatura feminina; Cabo Verde; Representação cultural.

  12. 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

  13. Subsidios ao planejamento de sistemas de areas verdes baseado em principios de ecologia urbana

    OpenAIRE

    Hardt, Leticia Peret Antunes

    2013-01-01

    Com a finalidade de verificar a relação entre o ambiente urbano e as áreas verdes, a pesquisa, através da avaliação de Curitiba como estudo de caso, descreve a situação da cidade, desenvolve procedimentos a nível de métodos e técnicas e fornece subsídios a modelos teóricos para o processo de planejamento de sistemas de áreas verdes urbanas. Por amostragem, através de fotointerpretação, foram estimadas as áreas permeáveis e impermeáveis e algumas tipologias de áreas verdes (com e sem cobertura...

  14. 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.

  15. 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.

  16. 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.

  17. EFECTOS PSICOAMBIENTALES DE LAS ÁREAS VERDES EN LA SALUD MENTAL

    Directory of Open Access Journals (Sweden)

    Joel Martínez-Soto

    2016-01-01

    Full Text Available El presente trabajo es una revisión de diversas evidencias sobre: a problemática ambiental de carencia de áreas verdes urbanas que constituye una amenaza no sólo a la salud ecológica, sino pública en lo que refiere a la salud mental. b Recurrencia de trastornos mentales en escenarios urbanos y la necesidad de valorar el rol de las áreas verdes como ambientes promotores de salud. c El ambiente físico como escenario que tiene influencias directas en la salud. d Ambientes restaurativos y restauración psicológica. e Aproximación ecológica social para el estudio de las áreas verdes como promotoras de salud mental.

  18. Low concentrations of persistent organic pollutants (POPs) in air at Cape Verde.

    Science.gov (United States)

    Nøst, Therese Haugdahl; Halse, Anne Karine; Schlabach, Martin; Bäcklund, Are; Eckhardt, Sabine; Breivik, Knut

    2017-08-26

    Ambient air is a core medium for monitoring of persistent organic pollutants (POPs) under the Stockholm Convention and is used in studies of global transports of POPs and their atmospheric sources and source regions. Still, data based on active air sampling remain scarce in many regions. The primary objectives of this study were to (i) monitor concentrations of selected POPs in air outside West Africa, and (ii) to evaluate potential atmospheric processes and source regions affecting measured concentrations. For this purpose, an active high-volume air sampler was installed on the Cape Verde Atmospheric Observatory at Cape Verde outside the coast of West Africa. Sampling commenced in May 2012 and 43 samples (24h sampling) were collected until June 2013. The samples were analyzed for selected polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), hexachlorobenzene (HCB) and chlordanes. The concentrations of these POPs at Cape Verde were generally low and comparable to remote sites in the Arctic for several compounds. Seasonal trends varied between compounds and concentrations exhibited strong temperature dependence for chlordanes. Our results indicate net volatilization from the Atlantic Ocean north of Cape Verde as sources of these POPs. Air mass back trajectories demonstrated that air masses measured at Cape Verde were generally transported from the Atlantic Ocean or the North African continent. Overall, the low concentrations in air at Cape Verde were likely explained by absence of major emissions in areas from which the air masses originated combined with depletion during long-range atmospheric transport due to enhanced degradation under tropical conditions (high temperatures and concentrations of hydroxyl radicals). Copyright © 2017 The Author(s). Published by Elsevier B.V. All rights reserved.

  19. Tecnologias verdes para um mundo autossustentável: um olhar sobre Brasil e Espanha

    Directory of Open Access Journals (Sweden)

    Raimundo Nonato Macedo Santos

    2017-04-01

    Full Text Available O texto discute sobre as tecnologias verdes no âmbito do processo de inovação, com base na análise das patentes verdes solicitadas em nível global e, mais particularmente, no estudo das patentes de prioridade Brasil e Espanha. Patentes verdes aqui entendidas como patentes com foco em tecnologias verdes, ou seja, tecnologias adaptativas e mitigadores das mudanças do clima, o que compreende redução da emissão de carbono e poluição, aumento da eficiência energética e de recursos e a redução da perda de biodiversidade e dos ecossistemas. Do ponto de vista metodológico, formulou-se uma estratégia de busca com base nas tabelas Green Technology Manual Codes. Para a constituição do corpus de 224.673 registros de patentes extraídas da base de dados Derwent World Patents Index – período de cobertura 2004-2013 – o foco foram as tecnologias verdes estabelecidas pela Convenção Marco das Nações Unidas sobre a Mudança Climática. Os resultados do estudo demonstraram a amplitude da mobilização de esforços, ora sob a égide da economia verde, no propósito da mudança do modelo de produção tradicional, não como uma opção, mas como uma tendência imperativa da economia mundial.

  20. The cone snails of Cape Verde: Marine endemism at a terrestrial scale

    Directory of Open Access Journals (Sweden)

    Howard Peters

    2016-07-01

    Full Text Available Cape Verde in the Eastern Atlantic is typical of many island groups in supporting a wealth of endemic species both terrestrial and marine. Marine gastropod molluscs of the genus Conus, commonly known as cone snails, occur in coastal tropical waters throughout the globe, but in Cape Verde their endemism reaches its apogee with 53 out of 56 species occurring nowhere else, the majority of which are restricted to single islands and frequently to single bays. However, Cape Verde is rapidly moving to a tourism-based economy with a projected boom in infrastructure development often coincidental with the shallow-water habitat of many range-restricted Conus. The conservation assessment of Conus to standards of the International Union for the Conservation of Nature (IUCN Red List of Endangered Species, found that 45.3% of 53 species assessed from Cape Verde are threatened or near-threatened with extinction compared to 7.4% of 579 species in the rest of the world. The only three Conus species globally assessed as Critically Endangered and on the cusp of extinction are all endemic to Cape Verde. Our analysis of Conus species distribution, together with spatial data of coastal protected areas and tourism development zones, identify important areas for future research and new marine protection. Our findings show that endemism with its associated risks for Conus in Cape Verde has worldwide parallels with many non-marine taxa, while our proposed strategy for Conus conservation extends beyond the confines of the country and this taxonomic group.

  1. Undivided Retromandibular Vein Continuing As External Jugular Vein With Facial Vein Draining Into It : An Anatomical Variation

    Directory of Open Access Journals (Sweden)

    Shahnaz Choudhary, Ashwani K Sharma, Harbans Singh

    2010-10-01

    Full Text Available Despite the fact that the blueprint of the whole body is unravelled, faultlessly during the growth anddevelopment of an animal; but amazingly variations do occur. During routine dissection of head and neckin a middle aged cadaver in the Post Graduate Department of Anatomy of this medical college, we foundvariation in the formation of external jugular vein on both sides, which was formed by the continuation ofundivided trunk of retromandibular vein. The facial vein and posterior auricular vein were the tributaries ofexternal jugular vein. The sound anatomical knowledge of variations of the veins of head and neck isessential to the success of surgical procedures. The embryological evaluation of the above anomaly wasdone and compared with the available literature which showed that the observed variation was rare

  2. The umbilical and paraumbilical veins of man.

    Science.gov (United States)

    Martin, B F; Tudor, R G

    1980-03-01

    During its transit through the umbilicus structural changes occur in the thick wall of the extra-abdominal segment of the umbilical vein whereby the components of the intra-abdominal segment acquire an essentially longitudinal direction and become arranged in fibro-elastic and fibro-muscular zones. The vein lumen becomes largely obliterated by asymmetrical proliferation of loose subendothelial conective tissue. The latter forms a new inner zone within which a small segment of the lumen persists in an eccentric position. This residual lumen transmits blood to the portal system from paraumbilical and systemic sources, and is retained in the upper part of the vein, even in old age. A similar process of lumen closure is observed in the ductus venosus. In early childhood the lower third of the vein undergoes breakdown, with fatty infiltration, resulting in its complete division into vascular fibro-elastic strands, and in old age some breakdown occurs in the outermost part of the wall of the upper two thirds. The paraumbilical veins are thick-walled and of similar structure to the umbilical vein. Together they constitute an accessory portal system which is confined between the layers of the falciform ligament and is in communication with the veins of the ventral abdominal wall. The constituents form an ascending series, namely, Burow's veins, the umbilical vein, and Sappey's inferior and superior veins. The main channel of Sappey's inferior veins may be the remnant of the right umbilical vein since it communicates with the right rectus sheath and often communicates directly with the portal system within the right lobe of the liver. The results are of significance in relation to clinical usage of the umbilical vein.

  3. Planejamento ambiental de areas verdes, estudo de caso : distrito sede do minicipio de Campinas - SP

    OpenAIRE

    Andrea Maria Morero

    1996-01-01

    Resumo: Em dias atuais, o planejamento de áreas verdes em sistemas urbanos tem se preocupado em conciliar a conservação dos recursos naturais com as facilidades recreativas de um espaço aberto. Neste enfoque, o presente trabalho propõe o planejamento ambiental de áreas verdes urbanas e peri-urbanas do Município de Campinas, baseado em três abordagens principais: a conservação dos ecossistemas naturais remanescentes, a educação ambiental e o lazer. De acordo com essas abordagens, foram selecio...

  4. Os Direitos da Criança em Portugal e Cabo Verde

    OpenAIRE

    Fonseca, Graça

    2004-01-01

    Analisam-se os direitos das crianças e de jovens que praticam crimes em Portugal e Cabo Verde, à luz da Convenção das Nações Unidas sobre os Direitos da Criança, ao longo da década de 90. O tradicional “modelo proteccionista” foi dando lugar, em virtude do aparente crescimento da delinquência juvenil, ao “modelo de justiça”, onde se conjugam a defesa da sociedade e o reconhecimento dos direitos processuais dos menores. Portugal adoptou o segundo modelo, enquanto em Cabo Verde permanece o segu...

  5. 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.

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

    Science.gov (United States)

    Straka, Jakub; Engel, Michael S

    2012-01-01

    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 batelkaisp. n. is distinguished from mainland African and Asian species. The genus Thyreus Panzer (Apinae: Melectini) is represented by four species - Thyreus denoliisp. n., Thyreus batelkaisp. n., Thyreus schwarzisp. n., and Thyreus aistleitnerisp. n. Previous records of Thyreus scutellaris (Fabricius) from the islands were based on misidentifications.

  7. Sobrevivencia y cobertura de plantas en techos verdes durante el estiaje en Yucatán

    OpenAIRE

    E. E. Ordóñez-López; C. Zetina-Moguel; M. Pérez-Cortés

    2012-01-01

    La búsqueda del confort térmico en edificaciones al menor costo energético es una aspiración humana; en Yucatán la alta temperatura ambiental estimula la búsqueda de tecnologías que maximicen el confort al interior de las viviendas. Los techos verdes son una de las opciones tecnológicas que se orientan a este objetivo. La selección adecuada de plantas y sustratos para techos verdes tiene efecto importante sobre su efectividad y costo económico. Los resultados obtenidos de este estudio pueden ...

  8. Libro verde: Derechos de autor en la economía del conocimiento

    OpenAIRE

    2008-01-01

    El objetivo del presente Libro Verde es promover un debate sobre la mejor manera de garantizar la difusión en línea de los conocimientos en los ámbitos de la investigación, la ciencia y la educación. El Libro Verde pretende plantear una serie de cuestiones relacionadas con el papel de los derechos de autor en la «economía del conocimiento» y poner en marcha una consulta a este respecto.

  9. 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

  10. Determinación cuantitativa de vitamina C y pigmentos y procesamiento de la papa criolla, variedad yema de huevo (Solanum phureja Juz et Buck

    Directory of Open Access Journals (Sweden)

    Isabel Alvarez G.

    2009-07-01

    Full Text Available Empleando papa pardo'pastusa (Solanum tuberosum como control, se determinó el contenido de Vitamina C total en la papa criolla, variedad Yema de Huevo (Solanum phureja, Juz et Buck y se evaluaron las pérdidas durante la cocción y el freído. Se utilizaron los métodos colorimétrico y densitométrico: el primero dio resultados altos debido a sustancias interferentes; el segundo reportó los siguientes valores: criolla 21 mg/100 g, pardo-pastusa 18 mg/100 g (para muestra fresca. Las pérdidas de Vitamina C de papa criolla con piel fueron durante la cocción {92°C durante 25' de 1 9 % y en el freído (175°C por 3' de 30%. También se analizaron los carotenos y xantofilas dando: carotenos en papa criolla, 1.5 mg/100 g, en pardo-pastusa 0.5 mg/100 g (muestra fresca y xantofilas en papa criolla 0.6 mg/100 g, en pardo-pastusa 0.13 mg/100 g. Se procesó en las siguientes formas no tradicionales: en harinas compuestas aceptadas por ios consumidores, en una sustitución del 2 0% con puré; frita en tajadas con piel y pasabocas de puré. El tiempo de vida fue para frita tres semanas a 16°C V más de una semana a 25°C; para pasabocas cinco semanas y media a 16 C y un mes a 30°C.

  11. Palm Vein Verification Using Gabor Filter

    Directory of Open Access Journals (Sweden)

    Ali Mohsin Al-Juboori

    2013-01-01

    Full Text Available Palm vein authentication is one of the modern biometric techniques, which employs the vein pattern in the human palm to verify the person. The merits of palm vein on classical biometric (e.g. fingerprint, iris, face are a low risk of falsification, difficulty of duplicated and stability. In this research, a new method is proposed for personal verification based on palm vein features. In the propose method, the palm vein images are firstly enhanced and then the features are extracted by using bank of Gabor filters. Then Fisher Discriminated Analysis (FDA is used to reduce the dimension of the features vectors. For vein pattern verification, this work uses Nearest Neighbors method. The EER of the proposed method is 0.2335%.

  12. Preduodenal portal vein: its surgical significance.

    Science.gov (United States)

    Makey, D A; Bowen, J C

    1978-11-01

    Preduodenal portal vein is a rare anatomical variant which may be one of many anomalies in the neonate with duodenal "atresia." Preduodenal portal vein also may be an occasional finding in an adult undergoing biliary, gastric, or pancreatic surgery. Awareness and recognition of the anomaly are essential for the avoidance of injury during such operations. We report here a symptomless patient whose preduodenal portal vein was discovered at cholecystectomy.

  13. Small hepatic veins Budd-Chiari syndrome.

    Science.gov (United States)

    Riggio, Oliviero; Marzano, Chiara; Papa, Alessia; Pasquale, Chiara; Gasperini, Maria Ludovica; Gigante, Antonietta; Valla, Dominique Charles; Plessier, Aurélie; Amoroso, Antonio

    2014-05-01

    Budd-Chiari syndrome is a rare disorder characterized by hepatic venous outflow obstruction at any level from the small hepatic veins to the atrio-caval junction, in the absence of heart failure or constrictive pericarditis. Various imaging modalities are available for investigating the gross hepatic vascular anatomy but there are rare forms of this disease where the obstruction is limited to the small intrahepatic veins, with normal appearance of the large hepatic veins at imaging. In this cases only a liver biopsy can demonstrate the presence of a small vessels outflow block. We report two cases of small hepatic veins Budd-Chiari syndrome.

  14. Leiomyosarcoma of the external iliac vein.

    Science.gov (United States)

    Fukuda, Wakako; Taniguchi, Satoshi; Fukuda, Ikuo

    2012-06-01

    Leiomyosarcoma of the iliac vein is an uncommon tumor. We report a case of a 63-year-old Japanese woman with leiomyosarcoma of the right external iliac vein. The patient complained of right inguinal pain and swelling. Computed tomography demonstrated a mass surrounding the right external iliac artery and vein. Metastases in the lungs and liver were found. Complete resection of the tumor along with the involved vessels was performed. Polytetrafluoroethylene grafts were used to reconstruct the vessels. Pathological examination revealed leiomyosarcoma of the external iliac vein. Although the prognosis of leiomyosarcoma is poor, en bloc tumor resection is the treatment of choice.

  15. Sonographic Findings in Fetal Renal Vein Thrombosis.

    Science.gov (United States)

    Gerber, Rebecca E; Bromley, Bryann; Benson, Carol B; Frates, Mary C

    2015-08-01

    We present the sonographic findings of fetal renal vein thrombosis in a series of 6 patients. The mean gestational age at diagnosis was 31.2 weeks. Four cases were unilateral, and 2 were bilateral. The most common findings were renal enlargement and intrarenal vascular calcifications, followed by increased renal parenchymal echogenicity. Inferior vena cava thrombosis was found in 4 patients and common iliac vein thrombosis in 2. Fetal renal vein thrombosis is an uncommon diagnosis with characteristic sonographic findings. The presence of these findings should prompt Doppler interrogation of the renal vein and inferior vena cava to confirm the diagnosis.

  16. 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.

  17. Sediment transport on the Palos Verdes shelf, California

    Science.gov (United States)

    Ferre, B.; Sherwood, C.R.; Wiberg, P.L.

    2010-01-01

    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

  18. Ancient mortars from Cape Verde: mineralogical and physical characterization

    Science.gov (United States)

    Rocha, Fernando; Costa, Cristiana; Velosa, Ana; Quintela, Ana; Terroso, Denise; Marques, Vera

    2014-05-01

    Times and locations of different building constructions means different knowledge, habits, different construction methods and materials. The study and safeguarding of the architectural heritage takes nowadays a progressive importance as a vehicle for transmission of cultures and history of nations. The coatings are of great importance in the durability of a building due to the protective role of the masonry. The compatibility between the materials with which they are executed (masonry, mortar and grout settlement) promotes the proper functioning of the wall and a consequent increase in durability. Therefore, it becomes important to study and characterize the mortar coating of buildings to know its characteristics and to use compatible materials in the rehabilitation and maintenance of buildings. This study aims to characterize the chemical, physical, mechanical and mineralogical mortar samples collected in buildings in three islands of Cape Verde, for the conservation, rehabilitation and preservation of them. The collected samples belong to buildings constructed in the end of XIX century and in the beginning of XX century. In order to characterize the mortar samples some tests was made, such as X-Ray Diffraction, X- Ray Fluorescence, acid attack and mechanical strength. The samples were divided into three groups depending on origin; so we have a first group collected on the island of Santiago, the second on the island of Saint Vincent and the third on the island of Santo Antao. The samples are all carbonated, but Santiago samples have a lower carbonates content. In terms of insoluble residue (from the acid attack) it was concluded that the samples have similar value ranging from 9 to 26%. The compressive strength of the mortars have a range between 1.36 and 4.55 MPa, which is related to the presence of more binder in samples with higher resistance. The chemical and mineralogical analyzes showed that these consist of lime mortars (binder), natural pozzolan and

  19. 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

  20. phenoVein - A tool for leaf vein segmentation and analysis

    OpenAIRE

    Bühler, J.; Rishmawi, L.; Pflugfelder, D.; Huber, G; Scharr, H.; Hülskamp, M; Koornneef, M.; Schurr, U; Jahnke, S.

    2015-01-01

    Precise measurements of leaf vein traits are an important aspect of plant phenotyping for ecological and genetic research. Here, we present a powerful and user-friendly image analysis tool named phenoVein. It is dedicated to automated segmenting and analyzing of leaf veins in images acquired with different imaging modalities (microscope, macrophotography, etc.), including options for comfortable manual correction. Advanced image filtering emphasizes veins from the background and compensates f...

  1. Reproducción en cautividad del lenguado senegalés (Solea senegalensis): inducción hormonal a la ovulación y obtención de huevos para la fecundación artificial

    OpenAIRE

    Rasines Pérez, Inmaculada

    2013-01-01

    El éxito del cultivo del lenguado senegalés, Solea senegalensis, está limitado por las disfunciones reproductivas de los ejemplares nacidos y criados en cautividad o de primera generación (F1). La presente tesis está dirigida a establecer un protocolo de inducción hormonal a la ovulación con análogos sintéticos de la hormona liberadora de gonadotropinas (GnRHa) y de extracción de los huevos por masaje abdominal para posteriormente, mediante fecundación artificial, obtener larvas de segunda ge...

  2. Uso de un aditivo a base de cantaxantina y extracto de achiote en dietas de gallinas de postura y su efecto sobre la coloración de la yema y la vida de anaquel del huevo

    Directory of Open Access Journals (Sweden)

    Víctor Rojas V.

    2015-01-01

    Full Text Available El objetivo del presente trabajo fue evaluar el uso de un aditivo a base de cantaxantina y extracto de achiote (Bixa orellana L. en dietas de gallinas de postura y su efecto sobre la coloración de la yema y la vida de anaquel del huevo. Se utilizaron 864 gallinas postura de 34 a 45 semanas de edad, distribuidas en un diseño completamente al azar con 6 repeticiones por tratamiento. Los tratamientos fueron T0 (dieta control, T1 (T0 + 30 g de cantaxantina y extracto de achiote y T2 (T0 + 60 g de cantaxantina y extracto de achiote. Los resultados obtenidos fueron de 88,6; 91,9 y 90,8 % para porcentaje de postura; 60,5; 61,6 y 61,5 g para peso de huevo; 53,6; 56,4 y 55,7 g para masa de huevo. La coloración de yema a temperatura de 7 °C para escala roche fue de 6, 9 y 12 por colorimétrico Minolta para “L” 42,10; 40,24 y 39,65; para “a” de 0,07; 3,68 y 6,44 y para “b” de 19,35; 18,36 y 18,18. La vida de anaquel a temperatura de 7 °C fue de 81, 86 y 90 UH. La peroxidación lipídica fue de 0,10; 0,07 y 0,05 μmol MDA.g-1 de yema; para T0, T1 y T2 respectivamente. En todas las variables indicadas se encontraron diferencias estadísticas significativas entre tratamientos (p < 0,05. El consumo de alimento fue de 103,9; 109,2 y 107,5 g y la conversión alimenticia de 1,94; 1,93 y 1,92. Se concluye que la adición de cantaxantina y extracto de achiote a 30 y 60 g t-1 de alimento respecto al testigo, mejoró los parámetros de rendimiento, coloración de yema y la vida de anaquel del huevo.

  3. Influence of nutritional and management practices on productive performance and egg quality of brown egg-laying hens = Influencia de factores nutricionales y de manejo sobre la productividad y calidad del huevo en gallinas ponedoras rubias

    OpenAIRE

    Perez-Bonilla, A.

    2012-01-01

    El objetivo general de esta Tesis Doctoral fue estudiar la influencia de diversos factores nutricionales y de manejo sobre la productividad y la calidad del huevo en gallinas ponedoras comerciales rubias. Los factores estudiados fueron: 1) Cereal principal y tipo de grasa en la dieta; 2) Nivel de proteína bruta y grasa en la dieta; 3) Nivel energético de la dieta; 4) Peso vivo al inicio del período de puesta. En el experimento 1, la influencia del cereal principal en la dieta y el tipo de gra...

  4. Subclavian artery to internal jugular vein fistula following percutaneous internal jugular vein catheterization.

    Science.gov (United States)

    Merino-Angulo, J; Cortazar, J L; Saez-Garmendia, F; Montejo, M

    1984-01-01

    The percutaneous internal jugular vein approach is now a commonly performed procedure for central venous catheterization. Iatrogenic arteriovenous fistulae are a very infrequent complication. We report an asymptomatic subclavian artery to internal jugular vein fistula following two percutaneous internal jugular vein catheterization attempts.

  5. 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.

  6. 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 (

  7. 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

  8. Geology of a Stable Intraplate Region: The Cape Verde/Canary Basin,

    Science.gov (United States)

    1982-03-01

    reflections. 102 I ’~ VIII. References Bebiano, J.B. (1932). "A Geologia do Arquipelago do Cabo Verde. Comm. Serv. Albers, Vernon M. (1965...eds.), The Ocean Content. Mexico City, Mexico , 43rd Basin and Margins, V. 2, The North Annual International Meeting of the Atlantic. New York

  9. 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...

  10. 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

  11. 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…

  12. 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

  13. 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 (

  14. 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.

  15. 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…

  16. Horizontal Gaze Palsy and Progressive Scoliosis With ROBO 3 Mutations in Patients From Cape Verde.

    Science.gov (United States)

    Mendes Marques, Nadine B P S; Barros, Sandra R; Miranda, Ana F; Nobre Cardoso, João; Parreira, Sónia; Fonseca, Teresa; Donaire, Nelvia M; Campos, Nuno

    2016-10-03

    Horizontal gaze palsy with progressive scoliosis (HGPPS) is a rare and autosomal recessive syndrome. We describe 2 cases of HGPPS which are the first documented in patients of African ancestry from an isolated population in Cape Verde. They demonstrated typical findings on neuro-ophthalmic examination and brain magnetic resonance imaging. One patient had novel heterozymous mutations of the ROB0 3 gene.

  17. 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.

  18. Diseño del plan estratégico de marketing para la empresa Consorsio Taláhas y Asociados para la distribución de huevos ecologícos en los principales mercados de la ciudad de Quito

    OpenAIRE

    Sandoval Ramos, Diego Andres

    2011-01-01

    La empresa Granja Campo Grande propiedad del Consorcio TALÁHASY y Asociados, esta dedicada a la crianza de gallinas ponedoras con el objeto de buscar una mejor nutrición en las familias ecuatorianas, es por esta razón que ha creado un nuevo producto “Huevos Ecológicos”, el cual su estudio ha demorado alrededor de 10 años para llegar a realizar un beneficio óptimo para el consumo. El huevo ecológico u orgánico es el producto del manejo ecológico de la ganadería respetando tres aspectos fun...

  19. 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.

  20. DIAGNÓSTICO DAS ÁREAS VERDES PÚBLICAS DO BAIRRO POTENGI, NATAL/RN

    OpenAIRE

    Liana de Holanda Viana Barros; Valdenildo Pedro da Silva; Geovanine Araújo Alves; Lidiane Gomes Pinheiro; Itamara do Nascimento; Pollyana Karla Lima Dias; Radimilla Fernanda Avelino de Oliveira; Viviane Almeida de Santana; Wagner Araújo Oliveira; Carla Stefânia Cabral de Medeiros; Brenda Suellen Franklin de Farias Gomes

    2015-01-01

    Este estudo teve por objetivo diagnosticar as principais áreas verdes do bairro Potengi, localizado na Região Administrativa Norte de Natal-RN. A metodologia adotada consistiu, principalmente, de levantamentos bibliográfico e documental e, posteriormente, de pesquisa de campo, por meio da qual foi possível se visitar ruas, praças, canteiros e passeios públicos do bairro. A detecção das áreas verdes se deu inicialmente com o uso do google Earth. Os resultados apontaram que as áreas verdes do b...

  1. Generating and analyzing synthetic finger vein images

    NARCIS (Netherlands)

    Hillerström, Fieke; Kumar, Ajay; Veldhuis, Raymond

    2014-01-01

    Abstract: The finger-vein biometric offers higher degree of security, personal privacy and strong anti-spoofing capabilities than most other biometric modalities employed today. Emerging privacy concerns with the database acquisition and lack of availability of large scale finger-vein database have

  2. PORTAL VEIN THROMBOSIS-ULTRASOUND IMAGING

    Directory of Open Access Journals (Sweden)

    Trajkovska Meri

    2016-07-01

    Full Text Available Portal venous system, apart from the main portal vein, includes its tributaries: superior and inferior mesenteric vein, as well as splenic vein, so the term portal venous thrombosis encompasses a broad spectrum of pathological conditions. Usually, one or more causative factors can be recognized, either local endothelial/ flow disturbances, or systemic inherited /acquired conditions. Portal vein thrombosis can be associated with benign or malignant disorders. Weather we are speaking about acute or chronic thrombosis, the clinical presentation is different. Acute thrombosis can be presented in a wide range, from mild abdominal discomfort to a state of intestinal ischemia and life-threatening infarction. Chronic thrombosis is usually recognized when variceal bleeding or other symptoms of portal hypertension express. Fast and accurate diagnosis sometimes is a life-saving procedure, especially in acute vascular alterations. Recently, due to the improvement of imaging procedures the number of patients with diagnosed portal vein thrombosis is increasingly growing. With a negative predictive value of 98% color Doppler ultrasound is considered as imaging modality of choice in detecting portal vein thrombosis. Based on large studies it is presumed that overall risk of getting portal vein thrombosis during lifetime is 1% in general population, but much bigger 5%-15% in cirrhotic patients. Existence of specific ultrasound criteria, if fulfilled, has ensured that diagnosis of portal vein thrombosis is fast and non-invasive. Procedure is convenient for the patient and healthcare providers, and above all, allows prompt treatment preventing further deterioration.

  3. Endovenous laser therapy for varicose veins

    NARCIS (Netherlands)

    Disselhoff, B.C.V.M.

    2008-01-01

    This thesis describes the technique of endovenous laser ablation and the outcome of various series of patients with varicose veins due to reflux in the great saphenous vein, treated by endovenous laser ablation or cryostripping in a single-centre study. This study has shown clear advantages of endov

  4. Vein of foramen caecum: imaging findings.

    Science.gov (United States)

    Tutar, Onur; Kandemirli, Sedat Giray; Yildirim, Duzgun; Memis, Emine Sebnem; Bakan, Selim

    2016-07-01

    Vein of foramen caecum has been classically described as a vein that connects nasal mucosa to the superior sagittal sinus in classic anatomy textbooks. However, its existence is controversial in literature. Herein, we demonstrated computed tomography and contrast enhanced magnetic resonance imaging findings of a tubular vascular structure extending to nasal mucosa and superior sagittal sinus.

  5. Improving the management of varicose veins.

    Science.gov (United States)

    Onida, Sarah; Lane, Tristan R A; Davies, Alun H

    2013-01-01

    Up to 30% of the UK population are affected by varicose veins. They are a manifestation of increased venous pressure in the lower limb caused by impaired venous return. Primary varicosities result from poor drainage from the superficial to the deep venous system. Secondary varicosities arise as a result of underlying pathology impeding venous drainage, such as deep venous thrombosis or increased intra-abdominal pressure caused by a mass, pregnancy or obesity. Patients with bleeding varicose veins should be referred to a vascular service immediately. Referral is also indicated in the following cases: symptomatic primary or recurrent varicose veins; lower limb skin changes thought to be caused by chronic venous insufficiency; superficial vein thrombosis and suspected venous incompetence; a venous leg ulcer or healed venous leg ulcer. Imaging is crucial in the assessment of the superficial and deep venous system to enable assessment of venous competence. The gold standard imaging technique is colour duplex ultrasonography. Duplex ultrasound should be used to confirm the diagnosis of varicose veins and the extent of truncal reflux, and to plan treatment for patients with suspected primary or recurrent varicose veins. Superficial vein ligation, phlebectomy and stripping have been the mainstay of treatment. In recent years, new techniques have been developed that are minimally invasive, enabling treatment of superficial venous incompetence with reduced morbidity. NICE recommends that endothermal ablation, in the form of radiofrequency or laser treatment, should be offered as treatment for patients with confirmed varicose veins and truncal reflux.

  6. Retinal vein occlusion: pathophysiology and treatment options

    OpenAIRE

    Niral Karia

    2010-01-01

    Niral KariaDepartment of Ophthalmology, Southend Hospital, Prittlewell Chase, Westcliff on Sea, Essex, United KingdomAbstract: This paper reviews the current thinking about retinal vein occlusion. It gives an overview of its pathophysiology and discusses the evidence behind the various established and emerging treatment paradigms.Keywords: central, hemispheric, branch, retinal vein occlusion, visual loss

  7. Assessment and management of patients with varicose veins.

    Science.gov (United States)

    Allen, Louise

    Varicose veins are enlarged superficial veins found in the legs. This article explores the anatomy and physiology of the venous system to assist nurses to assess, manage and treat patients with varicose veins.

  8. Caracterización de la composición en proteína, lípidos, energía y perfiles de ácidos grasos en huevos de tilapia roja (Oreochromis spp.

    Directory of Open Access Journals (Sweden)

    Rubén Darío Valbuena-Villarreal

    2013-06-01

    Full Text Available Luego de considerar el significado de las tilapias en el escenario piscícola nacional, la posibilidad de mejorar los índices de producción es un imperativo técnico y, dentro de estos, focalizar esfuerzos experimentales en la semilla resulta ser una opción estratégica. Con el fin de establecer un referente de base se utilizaron las puestas individuales de 50 hembras de tilapia roja (Oreochromis spp. para determinar los contenidos en los huevos de proteína (% MS, extracto etéreo (% MS, energía (cal g-1 y los perfiles de ácidos grasos (%, con algunas relaciones de interés analítico. Salvo ciertas variaciones menores, los valores encontrados se ajustan a los registros disponibles para la especie en diferentes estudios, lo que sugiere que las dietas ofrecidas a los reproductores experimentales contienen los mínimos necesarios para asegurar una provisión de nutrientes y energía suficientes para los embriones y las larvas en formación. Se analiza que, como punto de partida, esta serie de datos tiene utilidad para el desarrollo de trabajos destinados a mejorar los estándares de producción de alevinos, considerando que las variaciones en la composición, que pueden ser determinadas sobre los huevos, se pueden utilizar y tienen validez como un indicativo directo de su calidad.

  9. Influencia del tamaño del pubis y el peso de la ponedora en el tamaño y peso de sus huevos

    Directory of Open Access Journals (Sweden)

    Lamazares María del Carmen

    2006-10-01

    Full Text Available RESUMENEl objetivo del presente trabajo fueevaluar el efecto del tamaño del pubis y elpeso de la ponedora en el tamaño y elpeso de sus huevos. Con este fin seagruparon 64 gallinas L33 en 4 gruposutilizándose como criterio deagrupamiento el tamaño del pubis y elpeso de la ponedora por encima o pordebajo de la media general para cadaindicador. Los datos obtenidos fueronanalizados por un programa estadísticodonde se calcularon los coeficientes decorrelación y los coeficientes de regresión.Con los valores de los coeficientes decorrelación se calcularon los coeficientesde determinación. Estos últimos mostraronvalores entre 0.0049 y 0.1369 entre elpeso de la gallina y las características delhuevo. En cuanto al pubis, los valoresvariaron entre 0.01 y 0.0576. Losresultados muestran que la influencia queejerce el peso de la gallina y el tamaño delpubis sobre el peso y el tamaño de sushuevos es proporcional.ABSTRACTThe objective of the present work was toevaluate the effect of the size of the pubisand the corporal weight of the laying hensin the size and the peso of their eggs.They with this end formed a group 64 henL33 in 4 groups utilizing it like criterion ofgroup the size of the pubis and thecorporal weight of the laying hens forabove or below the general hose for eachindicator. The gotten facts were analyzedfor a statistical program where they werecalculated the coefficient of correlation andthe coefficient of regression. With thevalue of the coefficient of correlation thecoefficient of determination werecalculated. These last showed securitybetween 0.0049 0.1369 between thecorporal weight of the hen and thecharacteristics of the egg. As for the pubis.The value them vary between 0.01 0.0576.The result show that the influence thatexercises the corporal weight of the henand the size of the pubis on the corporalweight and the size of their eggs isproportional.

  10. El jugo de naranja agria como estimulante de la producción de huevos en ponedoras comerciales (Sour orange juice as stimulant on the eggs production in egg laying hens

    Directory of Open Access Journals (Sweden)

    Rodríguez-Hidalgo, Richar

    2007-11-01

    Full Text Available Resumen El trabajo se realizó en una granja de ponedora comercial en batería piramidales; se seleccionaron mediante un diseño completamente aleatorizado, 168 gallinas White Leghor, línea L33 de 32 semanas de edad con el mismo índice de postura. Se conformaron dos grupos (A y B de 84 animales con 7 réplicas de 12 gallinas cada uno. Cada grupo fue ubicado dentro de la misma nave en hileros de 7 jaulas a razón de 4 gallinas por huecos. El grupo(A sirvió como control, mientras que el grupo (B se le aplicó jugo de naranja agria en el pienso a razón de 10 ml por animal en dos dosis diarias por animal. El manejo fue el mismo para los dos grupos, durante el experimento. Se evaluaron los indicadores producción final de huevos, huevos por gallinas, índice de postura, % de huevos rotos, cascados, sucios y en fárfara. Para el procesamiento de la información se utilizó el paquete estadístico Statistic versión 6.0 realizándose una prueba de hipótesis para dos medias y una prueba de hipótesis para dos proporciones. Se obtuvo diferencia significativa para p<0.05, en cuanto al porcentaje de la postura, porcentaje de huevos rotos, cascados y sucios, así como la viabilidad del grupo experimental con relación al control. Se concluye que la utilización del jugo de naranja agria constituye un estimulante en la producción de huevos de gallinas ponedoras White Leghorn. Abstract The work was in the interprice commercial eggs laying hen in pyramidal battery. 168 hens White Leghorn line L 33 from 32 weeks have the same in laying index were selected using a completely randomized do sing. Two group were formed having 84 animals each group with 7 replies of 12 hens each. Each group was located in the same housing in cage of 7 cage, 4 hens for cage. Group A was a control and group B was experimental. To wich sour orange juice on the feed was applied using a ration of 10 ml per ration per animal into daily dosages during 28 days. The management was the

  11. Viabilidad de huevos y modelo de jaula para la cría artificial masiva de Anastrepha fraterculus (Diptera: Tephritidae Viability of eggs and screen cage model for mass artificial rearing of Anastrepha fraterculus (Diptera: Tephritidae

    Directory of Open Access Journals (Sweden)

    Juliana García

    2011-12-01

    Full Text Available El objetivo del presente trabajo fue determinar la viabilidad de huevos y el modelo de jaula apropiada para la cría artificial masiva de Anastrepha fraterculus (Wiedemann. Los resultados muestran que el periodo de máxima oviposición ocurre durante los primeros 10 días en jaulas modelo Mediana, lo cual permite obtener el volumen de huevos necesario para alimentar el pie de cría de A. fraterculus en una cría masiva. Considerando que se encontró relación positiva entre el volumen de huevos ovipositados y el porcentaje de eclosión de huevos, en un periodo de 21 días de colecta, este periodo coincide además con los valores de eclosión más altos. Entre los modelos de jaulas evaluadas: Mediana, Grande y Mission; el modelo Mediana mostró los mejores resultados al evaluar el número de ía con un valor promedio de 11,4. La jaula que mostró menores resultados fue el modelo Mission, con un valor promedio de 4,6 huevos/hembra/día. Las jaulas grandes mostraron valores menores a las jaulas Medianas, pero las diferencias fueron no significativas. Los buenos valores registrados en las jaulas Medianas posiblemente se deban a la estructura de la jaula, que presentó la cara interna dividida en muchos compartimientos, lo cual mejora la distribución de las moscas adultas y previene la mortalidad temprana por hacinamiento en la base o en el techo de la jaula.The aim of this study was to determine the viability of eggs and cage model suitable for artificial mass rearing of Anastrepha fraterculus (Wiedemann. The results show that the period of maximum oviposition occurs during the first 10 days in Medium cages which allows to obtain the necessary volume of eggs to feed the foot of rearing of A. fraterculus in a mass rearing. Considering that a positive relationship was found between the volume of eggs oviposited and the hatchability percentage in a period of 21 days of collection, this period coincides with the highest values of hatching. Among the

  12. El camino hacia una economia verde: el caso de la infraestructura de turismo en areas naturales protegidas

    National Research Council Canada - National Science Library

    Barrantes, Roxana; Fiestas Flores, Jerico

    2013-01-01

    Se examina la definicion de economia verde y se analiza el potencial del sector turismo en areas naturales protegidas para ser un caso exitoso que implemente los principios de este modelo de desarrollo...

  13. 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.

  14. Composición química del huevo de Tortuga Golfina Lepidochelys olivacea (Testudines: Cheloniidae y su potencial como recurso alimenticio

    Directory of Open Access Journals (Sweden)

    María Isabel Castro-González

    2011-12-01

    Full Text Available Por su potencial como fuente alimenticia, se analizó la composición química de huevo de Lepidochelys olivácea en La Escobilla, Oaxaca, México. El Instituto de Ciencias del Mar y Limnología de la Universidad Nacional Autónoma de México proporcionó 250 muestras de huevo liofilizado de 25 tortugas, que se analizaron siguiendo métodos oficiales para humedad, cenizas, proteína, grasa, lípidos totales(LT y análisis microbiológicos; además de ácidos grasos(AG por cromatografía de gases, aminoácidos(AA, vitaminas y colesterol(col por HPLC. Los resultados fueron los siguientes: (g/100g humedad(4.7, cenizas(3.8, proteína(53.7 y grasa(47.4. AA esenciales (g aa/100g Proteína: Ile (4.4, Lys(6.6, Leu(7.4, Met+Cys (8.8, Phe+Tyr (10.8; retinol (340μg/100g, colecalciferol (5.9 μg/100g, tocoferol (8.6, tiamina (0.3 y riboflavina (1.1 (mg/100g. Y los de (LT, (AG y (Col se concentraron en tres grupos por peso de tortuga: (LT (44.3-48.7-49.1g/100g, (Col (518.4-522.5-728.7 mg/100g. Entonces se identificaron 17 AGSaturados, 8 AGMonoinsaturados y 11 AGPoliinsaturados. Los AGS más abundantes (mg/100g: C16:0 (485-1263, AGM: C16:1 (456-716, C18:1n-9c (904- 1754 y AGP: C20:4n-6 (105-217, EPA (48-103 y HA (97-189. También, existió diferencia significativa (Fisher, pChemical composition of eggs of the Olive Ridley Lepidochelys olivacea (Testudines: Cheloniidae and it’s potential as a food source. The Olive Ridley is a worldwide distributed species with high nesting production per season, and in La Escobilla Oaxaca, México, there is a 70% of non-hatched eggs that are lost. In order to evaluate their potential use as a source for human and animal food products, their chemical composition was analyzed. Lyophilized egg samples from 25 turtles were obtained and were analyzed following the analytical methods for fatty acids, protein, fat, ash, moisture, amino acids, vitamins, cholesterol and microbiological agents. The analytical composition obtained

  15. Radiological features of azygous vein aneurysm.

    Science.gov (United States)

    Choudhary, Arabinda Kumar; Moore, Michael

    2014-04-01

    Mediastinal masses are most commonly associated with malignancy. Azygous vein aneurysm is a very rare differential diagnosis of mediastinal mass. We report here three cases of azygous vein aneurysm including children and adult patients. In the pediatric patient it was further complicated by thrombosis and secondary pulmonary embolism. We describe the radiological features on CXR, MRI, CT, PET-CT, US and angiogram and their differential diagnosis. Imaging findings of continuity with azygous vein, layering of contrast medium on enhanced CT and dynamic MRA showing filling of the mass at the same time as the azygous vein without prior enhancement will be strongly suggestive of azygous vein aneurysm with transtracheal ultrasound being the definitive test in these patients. It is important to keep a vascular origin mass in the differential diagnosis of mediastinal masses. Also, in young healthy patients with pulmonary embolism, a vascular etiology such as azygous vein aneurysm should be carefully evaluated. This article will help the clinicians to learn about the imaging features of azygous vein aneurysm on different imaging modalities.

  16. Portal vein gas in emergency surgery

    Directory of Open Access Journals (Sweden)

    Mahmood Hind

    2008-07-01

    Full Text Available Abstract Background Portal vein gas is an ominous radiological sign, which indicates a serious gastrointestinal problem in the majority of patients. Many causes have been identified and the most important was bowel ischemia and mesenteric vascular accident. The presentation of patients is varied and the diagnosis of the underlying problem depends mainly on the radiological findings and clinical signs. The aim of this article is to show the clinical importance of portal vein gas and its management in emergency surgery. Methods A computerised search was made of the Medline for publications discussing portal vein gas through March 2008. Sixty articles were identified and selected for this review because of their relevance. These articles cover a period from 1975–2008. Results Two hundreds and seventy-five patients with gas in the portal venous system were reported. The commonest cause for portal vein gas was bowel ischemia and mesenteric vascular pathology (61.44%. This was followed by inflammation of the gastrointestinal tract (16.26%, obstruction and dilatation (9.03%, sepsis (6.6%, iatrogenic injury and trauma (3.01% and cancer (1.8%. Idiopathic portal vein gas was also reported (1.8%. Conclusion Portal vein gas is a diagnostic sign, which indicates a serious intra-abdominal pathology requiring emergency surgery in the majority of patients. Portal vein gas due to simple and benign cause can be treated conservatively. Correlation between clinical and diagnostic findings is important to set the management plan.

  17. Valsalva and gravitational variability of the internal jugular vein and common femoral vein: Ultrasound assessment

    Energy Technology Data Exchange (ETDEWEB)

    Beddy, P. [Department of Radiology, The Adelaide and Meath Hospital, Tallaght, Dublin 24 (Ireland)]. E-mail: pbeddy@eircom.net; Geoghegan, T. [Department of Radiology, The Adelaide and Meath Hospital, Tallaght, Dublin 24 (Ireland); Ramesh, N. [Department of Radiology, The Adelaide and Meath Hospital, Tallaght, Dublin 24 (Ireland); Buckley, O. [Department of Radiology, The Adelaide and Meath Hospital, Tallaght, Dublin 24 (Ireland); O' Brien, J. [Department of Radiology, The Adelaide and Meath Hospital, Tallaght, Dublin 24 (Ireland); Colville, J. [Department of Radiology, The Adelaide and Meath Hospital, Tallaght, Dublin 24 (Ireland); Torreggiani, W.C. [Department of Radiology, The Adelaide and Meath Hospital, Tallaght, Dublin 24 (Ireland)

    2006-05-15

    Purpose: Central venous cannulation via the common femoral vein is an important starting point for many interventions. The purpose of this study was to determine the optimum conditions for cannulation of the femoral vein and to compare these with the relative changes in the internal jugular vein. Methods: High-resolution 2D ultrasound was utilised to determine variability of the calibre of the femoral and internal jugular veins in 10 healthy subjects. Venous diameter was assessed during the Valsalva manoeuvre and in different degrees of the Trendelenburg position. Results: The Valsalva manoeuvre significantly increased the size of the femoral and internal jugular veins. There was a relatively greater increase in femoral vein diameter when compared with the internal jugular vein of 40 and 29%, respectively. Changes in body inclination (Trendelenburg position) did not significantly alter the luminal diameter of the femoral vein. However, it significantly increased internal jugular vein diameter. Conclusions: Femoral vein cannulation is augmented by the Valsalva manoeuvre but not significantly altered by the gravitational position of the subject.

  18. Hand vein recognition based on orientation of LBP

    Science.gov (United States)

    Bu, Wei; Wu, Xiangqian; Gao, Enying

    2012-06-01

    Vein recognition is becoming an effective method for personal recognition. Vein patterns lie under the skin surface of human body, and hence provide higher reliability than other biometric traits and hard to be damaged or faked. This paper proposes a novel vein feature representation method call orientation of local binary pattern (OLBP) which is an extension of local binary pattern (LBP). OLBP can represent the orientation information of the vein pixel which is an important characteristic of vein patterns. Moreover, the OLBP can also indicate on which side of the vein centerline the pixel locates. The OLBP feature maps are encoded by 4-bit binary values and an orientation distance is developed for efficient feature matching. Based on OLBP feature representation, we construct a hand vein recognition system employing multiple hand vein patterns include palm vein, dorsal vein, and three finger veins (index, middle, and ring finger). The experimental results on a large database demonstrate the effectiveness of the proposed approach.

  19. Plan verde: un instrumento para la gestión y fomento de áreas verdes en el gran Santiago

    Directory of Open Access Journals (Sweden)

    Claudio Nilo Orellana

    2015-04-01

    Full Text Available La ciudad de Santiago, cuenta con una importante falencia de espacios verdes. La Organización Mundial de la Salud (OMS recomienda que las ciudades tengan 9 metros cuadrados por habitante. Por su parte, el Plan de Prevención y Descontaminación para la Región Metropolitana (PPDA se ha propuesto como meta lograr que el área Metropolitana logre un promedio de 6 metros cuadrados por habitante.

  20. 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)

  1. 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..

  2. Ventriculoatrial shunting via the azygos vein.

    Science.gov (United States)

    Balasubramaniam, C; DuBois, J J; Laurent, J P; Pokorny, W J; Harberg, F J; Cheek, W R

    1990-06-01

    The treatment of hydrocephalus has evolved through many stages but the "cure" is still elusive. It is not unusual for the neurosurgeon to find that the commonly used routes for catheter placement or sites for drainage of cerebrospinal fluid (CSF) cannot be employed. The azygos vein was used to gain access to the right atrium when the CSF could not be drained into the peritoneal cavity, nor could the neck veins be used to place the catheter into the right atrium. The azygos vein is a convenient and safe route to reach the right atrium in selected patients.

  3. Portal Decompression Using the Inferior Mesenteric Vein

    Directory of Open Access Journals (Sweden)

    Paolo Gorini

    1998-01-01

    Full Text Available We report five patients with variceal hemorrhage, in three cases secondary to diffuse thrombosis of the portal, superior mesenteric and splenic veins. Mesenteric angiography demonstrated patency of the inferior mesenteric vein (IMV in each, and successful portal decompression by anastomosis of the IMV to the left renal vein (n=4 or the inferior vena cava (n=1 was accomplished. Bleeding was permanently controlled: four patients have survived from one to eight years post-operatively. Because shunt procedures utilizing the IMV are technically straightforward, subtotally decompress the portal system and avoid the right upper quadrant, they may be advantageous in certain clinical settings.

  4. [FEATURES LIVER TRANSPLANTATION IN PORTAL VEIN THROMBOSIS].

    Science.gov (United States)

    Abbasov, P A

    2015-07-01

    In 2012 - 2013 years in 265 patients for liver transplantation was performed, including in 224 (84.5%)--from a living donor, in 41 (15.5%)--from the dead body. Using a Foley catheter to stop bleeding, and the imposition of vascular sutures during endovenectomy in portal vein thrombosis (PVT) and its possible damage under all conditions. In particular, PVT IV degree (Grade IV) in order to restore blood flow in the graft using the left gastric and renal vein is an alternative, if they are cryopreserved vein may be suitably used.

  5. Varicose veins--Who should be referred?

    Science.gov (United States)

    Onida, Sarah; Davies, Alun H; Franklin, Ian

    2015-11-01

    Varicose veins are a common, progressive condition in the UK, with significant negative effects on patients' quality of life. Despite their prevalence, access to secondary care for the assessment and treatment of varicose veins can be variable throughout the country.The National Institute of Health and Care Excellence guidelines developed in 2013 provide evidence-based guidance on the referral, assessment, and management of the patient with venous disease.In this article, we review the development of the guidelines for the management of varicose veins over the last 15 years, highlighting the latest changes in referral criteria.

  6. Los huevos en La Colmena

    Directory of Open Access Journals (Sweden)

    José Molina

    2014-10-01

    Full Text Available Las lenguas proponen interesantes juegos de recepción. En el español de nuestro país, por ejemplo, con la palabra ‘huevos’ nos referimos a los genitales masculinos, mientras que en italiano se trata del título del libro de poemas de Elisa Biagini (Florencia, Italia, 1970. Lo interesante surge cuando nos enteramos de que ‘huevo’ en italiano es masculino al singular y femenino al plural. El poemario de Biagini juega con esa transición de géneros. En el tantas veces atacado ‘horizonte masculino’ de la poesía italiana nace esta voz que llena de intenciones las imágenes. No hay referencias directas, sino el gesto hábil que sólo la poesía puede producir en el juego de la palabra. Biagini propone combatir la discursividad masculina de su tradición desde la dispersión de su voz: elabora figuras femeninas que aman hombres y mujeres, que son niñas, amantes y madres, sin necesidad de renunciar a la perversidad y al humor. El ejemplo más claro de esto es el poema “Feminist icon”, donde la misma mano que acaba de masturbarse hace la señal de la cruz entre el cuerpo y un burro de planchar. Biagini ha publicado tres libros de poemas: Questi nodi (Florencia, Gazebo, 1993, Uova (Génova, Zona, 1999 y l’ospite (Torino, Einaudi, 2004. Los poemas aquí traducidos fueron tomados de una antología personal.

  7. 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.

  8. Monte Verde: seaweed, food, medicine, and the peopling of South America.

    Science.gov (United States)

    Dillehay, Tom D; Ramírez, C; Pino, M; Collins, M B; Rossen, J; Pino-Navarro, J D

    2008-05-09

    The identification of human artifacts at the early archaeological site of Monte Verde in southern Chile has raised questions of when and how people reached the tip of South America without leaving much other evidence in the New World. Remains of nine species of marine algae were recovered from hearths and other features at Monte Verde II, an upper occupational layer, and were directly dated between 14,220 and 13,980 calendar years before the present ( approximately 12,310 and 12,290 carbon-14 years ago). These findings support the archaeological interpretation of the site and indicate that the site's inhabitants used seaweed from distant beaches and estuarine environments for food and medicine. These data are consistent with the ideas that an early settlement of South America was along the Pacific coast and that seaweeds were important to the diet and health of early humans in the Americas.

  9. Atividade antifúngica, in vitro, do óleo de café verde

    OpenAIRE

    Elizei,Virgínia Guerra; CHALFOUN, Sara Maria; Botelho,Deila Magna dos Santos; Rebelles,Pedro Paulo Reis

    2016-01-01

    RESUMO: O objetivo deste trabalho foi avaliar o efeito do contato direto e da fração volátildo óleo de café verde, testado nas concentrações de 500, 1.000, 1.500 e 2.000 µL L-1, sobre o crescimento micelial e a esporulação dos fungos Penicillium roqueforti e Rhizopus stolonifer. O óleo essencial de cravo-da-índia na concentração de 800 µL L-1 foi utilizado para comparação. Nas concentrações de 1.500 e 2.000 µL L-1, o óleo de café verde em contato direto proporcionou redução da esporulação do ...

  10. VeinPLUS: A Transillumination and Reflection-based Hand Vein Database

    OpenAIRE

    Gruschina, Alexander

    2015-01-01

    This paper gives a short summary of work related to the creation of a department-hosted hand vein database. After the introducing section, special properties of the hand vein acquisition are explained, followed by a comparison table, which shows key differences to existing well-known hand vein databases. At the end, the ROI extraction process is described and sample images and ROIs are presented.

  11. First report of Culex (Culex) tritaeniorhynchus Giles, 1901 (Diptera: Culicidae) in the Cape Verde Islands

    OpenAIRE

    Alves, Joana; Pina, Adilson de; Diallo, Mawlouth; Dia, Ibrahima

    2015-01-01

    During an entomological survey in Santiago Island, Cape Verde Islands, in November-December 2011 in order to study the bio-ecology and susceptibility to insecticides of Anopheles arabiensis Patton, 1905, Culex tritaeniorhynchus Giles, 1901 was found to be present in the Santa Cruz District. Both adult and immature specimens were collected and a description of both is given. Further confirmation of the taxonomic identity of the specimens was obtained from studying the male genitalia. This is t...

  12. 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.

  13. Options for In Situ Capping of Palos Verdes Shelf Contaminated Sediments

    Science.gov (United States)

    1999-03-01

    There may also be potential for colonization by deep- penetrating organisms (such as certain species of mud shrimp ) which may borrow to depths of 1 meter...Megafauna are exemplified by large skates and rays that excavate large pits during foraging and large crustaceans such as lobsters, crabs and mantis ... shrimp that bury or burrow into the substrate. This topic was addressed for the Palos Verdes Shelf by Morris (1994), who concluded that the most likely

  14. Las compras verdes. Enfoque ambiental en la contratación pública

    OpenAIRE

    Romero-Pérez, Jorge Enrique

    2008-01-01

    En la contratación pública, estatal, administrativa se incorpora el enfoque ambiental para los efectos de que el Estado cumpla con su deber de proteger la naturaleza, siendo un consumidor de bienes y servicios destinados a su función pública, teniendo presente los parámetros ambientales. Por ello es que se ha divulgado este enfoque como las compras o adquisiciones verdes de parte de la Administración pública.

  15. Economía verde y economía del conocimiento

    OpenAIRE

    Duque Escobar, Gonzalo

    2013-01-01

    Una opción sin precedentes para la ecorregión cafetera, es la creación de sinergias entre economía verde y economía del conocimiento, para desarrollar ventajas competitivas a partir del medio tropical andino biodiverso y del carácter triétnico de su población, desde las instituciones científicas e importantes universidades que hacen presencia en este territorio conurbado.

  16. Lava flow hazard at Fogo Volcano, Cabo Verde, before and after the 2014-2015 eruption

    OpenAIRE

    Richter, Nicole; Favalli, Massimiliano; de Zeeuw-van Dalfsen, Elske; Fornaciai, Alessandro; Silva Fernandes, Rui Manuel; Pérez, Nemesio M.; Levy, Judith; Victória, Sónia Silva; Thomas R. Walter

    2016-01-01

    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&ndash...

  17. 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...

  18. 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

  19. 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.

  20. [Retinal vein occlusion in a young patient].

    Science.gov (United States)

    Zemba, Mihail; Ochinciuc, Uliana; Sarbu, Laura; Avram, Corina; Camburu, Raluca; Stamate, Alina

    2013-01-01

    We present a case report of a 27 years old pacient with central retinal vein occlussion and macular edema. The pacient has a significant reduction of the macular aedema with complete recovery of vision after the treatment.

  1. Vein of Galen Malformation: Outcome after Embolization

    Directory of Open Access Journals (Sweden)

    J Gordon Millichap

    2003-12-01

    Full Text Available The neurodevelopmental outcome after endovascular treatment of vein of Galen malformation (VOGM in 27 patients seen between 1983 and 2002 was assessed by chart review and parental questionnaires at the University of California, San Francisco.

  2. Efficacy of varicose vein surgery with preservation of the great safenous vein

    Directory of Open Access Journals (Sweden)

    Bernardo Cunha Senra Barros

    2015-04-01

    Full Text Available OBJECTIVE: To evaluate the efficacy of surgical treatment of varicose veins with preservation of the great saphenous vein. METHODS: We conducted a prospective study of 15 female patients between 25 and 55 years of age with clinical, etiologic, anatomic and pathophysiologic (CEAP classification 2, 3 and 4. The patients underwent surgical treatment of primary varicose veins with great saphenous vein (GSV preservation. Doppler ultrasonography exams were carried out in the first and third months postoperatively. The form of clinical severity of venous disease, Venous Clinical Severity Score (VCSS was completed before and after surgery. We excluded patients with history of deep vein thrombosis, smoking or postoperatively use of elastic stockings or phlebotonics. RESULTS: All patients had improved VCSS (p <0.001 and reduction in the diameter of the great saphenous vein (p <0.001. There was a relationship between VCSS and the GSV caliber, as well as with preoperative CEAP. There was improvement in CEAP class in nine patients when compared with the preoperative period (p <0.001. CONCLUSION: The varicose vein surgery with preservation of the great saphenous vein had beneficial effects to the GSV itself, with decreasing caliber, and to the symptoms when the vein had maximum caliber of 7.5 mm, correlating directly with the CEAP. The decrease in GSV caliber, even without complete abolition of reflux, leads to clinical improvement by decreasing the reflux volume.

  3. Isolated inferior mesenteric portal hypertension with giant inferior mesenteric vein and anomalous inferior mesenteric vein insertion

    Directory of Open Access Journals (Sweden)

    G Raghavendra Prasad

    2013-01-01

    Full Text Available Extrahepatic portal hypertension is not an uncommon disease in childhood, but isolated inferior mesenteric portal varices and lower gastrointestinal (GI bleed have not been reported till date. A 4-year-old girl presented with lower GI bleed. Surgical exploration revealed extrahepatic portal vein obstruction with giant inferior mesenteric vein and colonic varices. Inferior mesenteric vein was joining the superior mesenteric vein. The child was treated successfully with inferior mesenteric - inferior vena caval anastomosis. The child was relieved of GI bleed during the follow-up.

  4. CT in thrombosed dilated posterior epidural vein

    Energy Technology Data Exchange (ETDEWEB)

    Bammatter, S.; Schnyder, P.; Preux, J. de

    1987-05-01

    The authors report a case of thrombosis of the distal end of an enlarged right posterior epidural vein. The patient had a markedly narrow lumbar canal due to L5 spondylolisthesis. The dilated vein and the thrombosis were displayed by computed tomography but remained unrecognized until surgery. Pathogenesis of this condition is discussed. A review of the English, French and German literature revealed no prior radiological reports of a similar condition.

  5. Primary leiomyosarcoma of the innominate vein.

    Science.gov (United States)

    Illuminati, Giulio; Miraldi, Fabio; Mazzesi, Giuseppe; D'urso, Antonio; Ceccanei, Gianluca; Bezzi, Marcello

    2007-01-01

    Primary venous leiomyosarcoma is rare. We report the case of a primary leiomyosarcoma of the left innominate vein, with neoplastic thrombus extending into the left jugular and subclavian veins. The tumor was curatively resected en bloc with anterior mediastinal and laterocervical lymphatics, through a median sternotomy prolonged into left cervicotomy. Primary venous sarcomas may be associated with prolonged survival in individual cases, with curative resection recommended as the standard treatment, in the absence of distant spread.

  6. The umbilical and paraumbilical veins of man.

    OpenAIRE

    Martin, B F; Tudor, R G

    1980-01-01

    During its transit through the umbilicus structural changes occur in the thick wall of the extra-abdominal segment of the umbilical vein whereby the components of the intra-abdominal segment acquire an essentially longitudinal direction and become arranged in fibro-elastic and fibro-muscular zones. The vein lumen becomes largely obliterated by asymmetrical proliferation of loose subendothelial conective tissue. The latter forms a new inner zone within which a small segment of the lumen persis...

  7. Branch Retinal Vein Occlusion and Its Management

    Institute of Scientific and Technical Information of China (English)

    Desmond; Archer

    1992-01-01

    The natural course of Branch Retinal Vein Occlusion is determined by the site and completeness of the occlusion, the integrity of arterial perfusion to the affected sector and the efficiency of the developing collateral circulation. Most patients with tributary vein occlusion have some capillary fall out and microvascular incompetence in the distribution of the affected retina and vision is significantly compromised in over 50% of patients who have either chronic macular oedema or ischemia involving the...

  8. Impact of Sahara dust transport on Cape Verde atmospheric element particles.

    Science.gov (United States)

    Almeida-Silva, M; Almeida, S M; Freitas, M C; Pio, C A; Nunes, T; Cardoso, J

    2013-01-01

    The objectives of this study were to (1) conduct an elemental characterization of airborne particles sampled in Cape Verde and (2) assess the influence of Sahara desert on local suspended particles. Particulate matter (PM(10)) was collected in Praia city (14°94'N; 23°49'W) with a low-volume sampler in order to characterize its chemical composition by k0-INAA. The filter samples were first weighed and subsequently irradiated at the Portuguese Research Reactor. Results showed that PM(10) concentrations in Cape Verde markedly exceeded the health-based air quality standards defined by the European Union (EU), World Health Organization (WHO), and U.S. Environmental Protection Agency (EPA), in part due to the influence of Sahara dust transport. The PM(10) composition was characterized essentially by high concentrations of elements originating from the soil (K, Sm, Co, Fe, Sc, Rb, Cr, Ce, and Ba) and sea (Na), and low concentrations of anthropogenic elements (As, Zn, and Sb). In addition, the high concentrations of PM measured in Cape Verde suggest that health of the population may be less affected compared with other sites where PM(10) concentrations are lower but more enriched with toxic elements.

  9. A cor verde do endosperma do café On the green color of coffee endosperm

    Directory of Open Access Journals (Sweden)

    Paulo Mazzafera

    1988-01-01

    Full Text Available Realizaram-se comparações entre as sementes dos cultivares Mundo Novo de Coffea arabica, cujo endosperma é verde, com as do cultivar Cera, dessa espécie, de endosperma amarelo, com o objetivo de determinar os componentes responsáveis por aquela cor. Nas análises de clorofilas, flavonóides, diterpenos totais, ácido clorogênico e íons Mg, Ca, K, Fe e B, nenhuma diferença foi verificada entre os dois cultivares, sugerindo que a coloração verde se deva à presença de outros componentes ou que o 'Cera' apresente um componente que não ocorre no 'Mundo Novo' e que inibe o desenvolvimento da cor verde no seu endosperma.A comparison was made between the green seeded Mundo Novo and the yellow seeded Cera cultivars of Coffea arabica, in order to determine the components responsible for the green color of the endosperm. Both cultivars produce beverage of good quality. Chlorophylls, flavonoids, total diterpens, chlorogenic acid, and K, Ca, Mg, Fe and B ions were determined in beans of both cultivars. No differences between cultivars were found on these component contents, what suggests that the green color may be due to other compounds or that the Cera endosperm may have an inhibitor component of the green color of the coffee beans.

  10. 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.

  11. 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...

  12. Biologia de ninfas e adultos do percevejo-verde em estruturas reprodutivas de algodoeiro

    Directory of Open Access Journals (Sweden)

    Rosalia Azambuja

    2014-06-01

    Full Text Available O objetivo deste trabalho foi determinar a biologia de ninfas e adultos do percevejo-verde em estruturas reprodutivas do algodoeiro. Os alimentos testados foram: dieta padrão, contendo vagem de feijão, amendoim cru e frutos de ligustro; vagem verde de soja; semente de soja; botão floral de algodoeiro; e maçãs e sementes de algodoeiro. Foram avaliados os parâmetros biológicos: período de desenvolvimento e sobrevivência ninfal; longevidade de fêmeas e machos; percentagem de fêmeas em oviposição; períodos de pré-oviposição e oviposição; número total de ovos por fêmea; e viabilidade dos ovos. Ninfas alimentadas com estruturas reprodutivas do algodoeiro morreram no segundo ou no terceiro ínstar. Adultos alimentados com botão floral e semente de algodoeiro não se reproduzem; porém, há reprodução quando adultos os de percevejo-verde são alimentados com maçã de algodoeiro, o que indica a capacidade de adaptação da espécie na fase reprodutiva do algodoeiro.

  13. Psychosocial concomitants of loneliness among students of Cape Verde and Portugal.

    Science.gov (United States)

    Neto, F; Barros, J

    2000-09-01

    This research is an examination of the relationship between loneliness and a number of psychosocial variables (e.g., affective state, cultural issues, gender, age) among adolescents and young adults from Cape Verde and Portugal. Two studies are presented. The participants in the first study were 285 adolescents from Cape Verde and 202 from Portugal, and in the second study there were 134 college students from Cape Verde and 112 from Portugal. The following instruments were administered to all the participants in both studies: The Revised UCLA Loneliness Scale (D. Russell, L. Peplau, & C. Cutrona, 1980), the Neuroticism Scale (J. Barros, 1999), the Optimism Scale (J. Barros, 1998), the Social Anxiety subscale (A. Fenigstein, M. Scheier, & A. Buss, 1975), and the Satisfaction With Life Scale (E. Diener, R. Emmons, R. Larsen, & S. Griffin, 1985). No ethnic or gender differences were found for loneliness between the two groups. For both groups, the most prominent predictors of loneliness were neuroticism and dissatisfaction with life. However, as expected, the adolescent group recorded higher scores for loneliness than did the college students.

  14. BENEFÍCIOS DA BIOMASSA DE BANANA VERDE Á SAÚDE HUMANA

    Directory of Open Access Journals (Sweden)

    Vânia Thais Silva Gomes

    2017-03-01

    Full Text Available Este estudo tem por objetivo contextualizar os benefícios da biomassa de banana verde na saúde humana. A pergunta norteadora para a construção desta revisão integrativa foi: qual os benefícios da biomassa de banana verde para a saúde humana? Para a seleção dos estudos, utilizou-se as seguintes bases de dados eletrônicas: SCIELO (Scientific Eletronic Library Online, IBECS (Indice Bibliográfico Español de Ciencias de la Salud, LILACS (Literatura LatinoAmericana e do Caribe em Ciências da Saúde e MEDLINE (Medical Literature Analysis and Retrieval System Online. Concluiu-se que a biomassa da banana verde apresenta uma boa quantidade de nutrientes, vitaminas, fibras, o preparo é rápido e fácil, e o custo é acessível. É considerado um alimento funcional, pois apresenta prebióticos, amido resistente em sua composição, portanto considerada uma ótima fonte de nutrientes.

  15. 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.

  16. 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.

  17. 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)

  18. Endovascular treatment of iliac vein compression syndrome

    Institute of Scientific and Technical Information of China (English)

    MENG Qing-you; LI Xiao-qiang; QIAN Ai-min; SANG Hong-fei; RONG Jian-jie; ZHU Li-wei

    2011-01-01

    Background Iliac vein compression syndrome (IVCS),the symptomatic compression of the left common iliac vein between the right common iliac artery and the vertebrae,is not an uncommon condition.The aim of this research was to retrospectively evaluate long-term outcome and the significance of endovascular treatment in patients with left IVCS.Methods Between January 1997 and September 2008,296 patients received interventional therapy in the left common iliac vein.In the second stage,170 cases underwent saphenous vein high ligation and stripping.Two hundred and thirty-one cases were followed up over a period of 6 to 120 months (average 46 months) and evaluated for symptom improvement with color ultrasound and ascending venography.Results The stenotic or occlusive segments of the left iliac vein were successfully dilated in 285 cases,of whom 272 received stent implantation therapy.Most of the patients achieved satisfactory results on discharge.During the follow-up period,varicose veins were alleviated in 98.7% of the patients,and leg swelling disappeared or was obviously relieved in 84% of cases.About 85% of leg ulcers completely healed.The total patency rate was 91.7% as evaluated with color ultrasound and 91.5% with ascending venography.Conclusions Endovascular treatment of IVCS provides effective symptomatic improvement and good long-term patency in most patients.

  19. Portal vein thrombosis in children and adolescents.

    Science.gov (United States)

    Schettino, Graziela C M; Fagundes, Eleonora D T; Roquete, Mariza L V; Ferreira, Alexandre R; Penna, Francisco J

    2006-01-01

    To review the literature on portal vein thrombosis in children and adolescents, focusing on its diagnosis, complications and treatment. The medical literature of the past 10 years was reviewed using the PubMed and MEDLINE search engines, with major focus on portal vein thrombosis and its clinical outcomes. The following keywords or expressions were used for the web search: portal vein thrombosis, extra-hepatic portal vein obstruction, prognosis, children, portal hypertension, esophagogastric varices. Additionally, we also reviewed the articles cited in the references of the initially selected papers, as well as relevant textbooks. Portal vein thrombosis is one of the most common causes of portal hypertension among children. The initial clinical manifestation is characterized either by episodes of upper gastrointestinal bleeding or by splenomegaly on routine clinical examination. The major complications include upper gastrointestinal bleeding, hypersplenism secondary to splenomegaly, growth retardation, and portal biliopathy. The diagnosis is made by abdominal Doppler ultrasonography. Treatment is targeted at the complications and includes primary and secondary prophylaxis against upper gastrointestinal bleeding (which results from the rupture of esophageal varices), and portosystemic shunting in selected cases. Portal vein thrombosis is one of the major triggers of upper gastrointestinal bleeding in children. Bleeding episodes have a remarkable effect on the quality of life of affected patients. Thus, appropriate diagnosis and treatment are needed in order to reduce morbidity and mortality.

  20. Veins improve fracture toughness of insect wings.

    Directory of Open Access Journals (Sweden)

    Jan-Henning Dirks

    Full Text Available During the lifetime of a flying insect, its wings are subjected to mechanical forces and deformations for millions of cycles. Defects in the micrometre thin membranes or veins may reduce the insect's flight performance. How do insects prevent crack related material failure in their wings and what role does the characteristic vein pattern play? Fracture toughness is a parameter, which characterises a material's resistance to crack propagation. Our results show that, compared to other body parts, the hind wing membrane of the migratory locust S. gregaria itself is not exceptionally tough (1.04±0.25 MPa√m. However, the cross veins increase the wing's toughness by 50% by acting as barriers to crack propagation. Using fracture mechanics, we show that the morphological spacing of most wing veins matches the critical crack length of the material (1132 µm. This finding directly demonstrates how the biomechanical properties and the morphology of locust wings are functionally correlated in locusts, providing a mechanically 'optimal' solution with high toughness and low weight. The vein pattern found in insect wings thus might inspire the design of more durable and lightweight artificial 'venous' wings for micro-air-vehicles. Using the vein spacing as indicator, our approach might also provide a basis to estimate the wing properties of endangered or extinct insect species.

  1. Producción de plantas transgénicas de Solanum phureja variedad yema de huevo clon 1 mediada por Agrobacteriun tumefaciens

    Directory of Open Access Journals (Sweden)

    Chaparro Giraldo Alejandro

    2006-12-01

    Full Text Available El objetivo general de este proyecto fue la producción de plantas transformadas genéticamente de S. phureja
    variedad Yema de Huevo Clon 1 que sean potencialmente tolerantes a insectos, rasgo conferido por la inserción
    en su genoma del gen mirl2 derivado del pomelo (Citrus paradisi que codifica para un inhibidor de proteasas de
    tipo Serina. Se trabajó con el sistema de transformación mediado por Agrobacterium tumefaciens utilizando la cepa
    LBA4404 que contiene el plásmido residente pAL4404 y el vector binario pNOV022 el cual contiene el gen de interés mirl2. Se utilizaron como explantes entrenudos con una longitud de 0,5 a 1 cm provenientes de material in
    vitro entre cuatro a cinco semanas de edad, los cuales fueron co-cultivados en una concentración bacteriana de
    1/50, para posteriormente ser colocados en medio de regeneración sin agente de selección. Se encontró que el
    medio de regeneración más apropiado esta compuesto por Zeatina Ribósido (ZR 2 mg/L, ácido naftalenacético
    (ANA 0,04 mg/L y ácido giberélico (AG3 0,1 mg/L en el cual se logró obtener un 87,6% de callogénesis y un
    48,6% de regeneración. Posteriormente se estableció una población de individuos potencialmente transgénicos,
    a partir de los cuales se realizó una extracción de DNA, organizando los extractos en pools de diez individuos,
    obteniéndose un total de 52 pools, a partir de 520 individuos. Se utilizaron cuatro diferentes cantidades de DNA para un volumen final de 50 μl en la PCR: 150 ng; 300 ng; 600 ng; 1.200 ng y se realizó PCR para los dos genes mirl2 (IP y manA (PMI. Tras el análisis por electrofóresis de los resultados de la PCR para cada uno de los pools no se observó la señal de amplificación específica de los genes de interés, en tanto que se observó la señal para los genes endógenos de control. Finalmente se analizaron 62 clones provenientes de un segundo ensayo de transformaci

  2. Caracterización parcial de inmunoglobulinas G (IGy específicas contra la lectina de Salvia bogotensis a partir de huevos de gallina (Gallus domesticus

    Directory of Open Access Journals (Sweden)

    Pérez Gerardo

    2004-12-01

    Full Text Available Partiendo de yemas de huevos de gallinas inoculadas con la lectina presente en Salvia bogotensis, se ensayaron seis métodos de delipidación y extracción de anticuerpos de gallina (IgY. Se escogió la metodología por dilución con agua para continuar con la purificación de anticuerpos,
    debido a la remoción total de los lípidos de la yema y la alta actividad de las IgY contra la lectina de S. bogotensis. Para la purificación de anticuerpos se utilizaron diferentes métodos cromatográficos: cromatografía de intercambio iónico (DEAE Sephacel, hidrofóbica (Fenil Sepharosa 4B, exclusión molecular (Sephacryl S-200 y S-500, tiofílica (T-gel. Se escogió la cromatografía tiofílica ya que permitió la purificación de anticuerpos, para luego continuar con la caracterización de estos (peso molecular de las IgY y sus subunidades, cantidad de carbohidratos totales, punto isoeléctrico, interacción de las IgY con diferentes lectinas de leguminosas. Los valores de peso molecular del anticuerpo y sus subunidades concordaron con los reportes de la literatura. También se determinó el título de la población de IgY con un valor bastante alto en comparación al título de anticuerpos específicos dirigidos contra otro tipo de antígeno. Debido al bajo rendimiento de la cromatografía tiofílica se realizó una cromatografía de afinidad indirecta sobre aMSB Sepharosa 4B con el fin de purificar IgY específicos y continuar con los ensayos de caracterización. Aunque se obtuvieron fracciones eluídas de esta columna no se detectó proteína. Como alternativa para la purificación de anticuerpos se utilizó un soporte de Sephacryl S-200 a alta fuerza iónica. De esta cromatografía se obtuvieron anticuerpos parcialmente puros. Con
    esta fracción de anticuerpo se determinó la cantidad de carbohidratos totales, valor que se encontróalgo alejado al reportado en literatura, mientras el punto isoeléctrico de las IgY se encontró en los

  3. Evaluation of leg varicose veins by MR venography

    Energy Technology Data Exchange (ETDEWEB)

    Kojima, Yoshifumi; Shiraishi, Tomokuni; Taira, Mitsuru [Kansai Medical Univ., Neyagawa, Osaka (Japan). Kohri Hospital; Imamura, Atsushi; Yamada, Hitoshi; Okuno, Masafumi; Kamiyama, Yasuo

    1998-11-01

    Preoperative evaluation was conducted on 30 patients with leg varicose veins by MR venography (MRV), and compared with conventional venography, MR images were performed by the 3D-SMASH Method. Compared with venography, MRV could more clearly demonstrate leg varicose veins with perforating veins than venography. It could detected fine varicose veins more than 2 mm in diameter, and deep veins. Furthermore, 3D observation enables accurate detection of the location of perforating vein. In conclusion, MRV is useful for the diagnosis of leg varicose vein. (author)

  4. Scattering removal for finger-vein image restoration.

    Science.gov (United States)

    Yang, Jinfeng; Zhang, Ben; Shi, Yihua

    2012-01-01

    Finger-vein recognition has received increased attention recently. However, the finger-vein images are always captured in poor quality. This certainly makes finger-vein feature representation unreliable, and further impairs the accuracy of finger-vein recognition. In this paper, we first give an analysis of the intrinsic factors causing finger-vein image degradation, and then propose a simple but effective image restoration method based on scattering removal. To give a proper description of finger-vein image degradation, a biological optical model (BOM) specific to finger-vein imaging is proposed according to the principle of light propagation in biological tissues. Based on BOM, the light scattering component is sensibly estimated and properly removed for finger-vein image restoration. Finally, experimental results demonstrate that the proposed method is powerful in enhancing the finger-vein image contrast and in improving the finger-vein image matching accuracy.

  5. Scattering Removal for Finger-Vein Image Restoration

    OpenAIRE

    Jinfeng Yang; Ben Zhang; Yihua Shi

    2012-01-01

    Finger-vein recognition has received increased attention recently. However, the finger-vein images are always captured in poor quality. This certainly makes finger-vein feature representation unreliable, and further impairs the accuracy of finger-vein recognition. In this paper, we first give an analysis of the intrinsic factors causing finger-vein image degradation, and then propose a simple but effective image restoration method based on scattering removal. To give a proper description of f...

  6. An effective preprocessing method for finger vein recognition

    Science.gov (United States)

    Peng, JiaLiang; Li, Qiong; Wang, Ning; Abd El-Latif, Ahmed A.; Niu, Xiamu

    2013-07-01

    The image preprocessing plays an important role in finger vein recognition system. However, previous preprocessing schemes remind weakness to be resolved for the high finger vein recongtion performance. In this paper, we propose a new finger vein preprocessing that includes finger region localization, alignment, finger vein ROI segmentation and enhancement. The experimental results show that the proposed scheme is capable of enhancing the quality of finger vein image effectively and reliably.

  7. Gonadal vein tumor thrombosis due to renal cell carcinoma

    Directory of Open Access Journals (Sweden)

    Hamidreza Haghighatkhah

    2015-01-01

    Full Text Available Renal cell carcinoma (RCC had a tendency to extend into the renal vein and inferior vena cava, while extension into the gonadal vein has been rarely reported. Gonadal vein tumor thrombosis appears as an enhancing filling defect within the dilated gonadal vein anterior to the psoas muscle and shows an enhancement pattern identical to that of the original tumor. The possibility of gonadal vein thrombosis should be kept in mind when looking at an imaging study of patients with RCC

  8. Augmented reality based real-time subcutaneous vein imaging system

    OpenAIRE

    Ai, Danni; Yang, Jian; Fan, Jingfan; Zhao, Yitian; Song, Xianzheng; Shen, Jianbing; Shao, Ling; Wang, Yongtian

    2016-01-01

    A novel 3D reconstruction and fast imaging system for subcutaneous veins by augmented reality is presented. The study was performed to reduce the failure rate and time required in intravenous injection by providing augmented vein structures that back-project superimposed veins on the skin surface of the hand. Images of the subcutaneous vein are captured by two industrial cameras with extra reflective near-infrared lights. The veins are then segmented by a multiple-feature clustering method. V...

  9. Leaf vein segmentation using Odd Gabor filters and morphological operations

    OpenAIRE

    Katyal, Vini; Aviral

    2012-01-01

    Leaf vein forms the basis of leaf characterization and classification. Different species have different leaf vein patterns. It is seen that leaf vein segmentation will help in maintaining a record of all the leaves according to their specific pattern of veins thus provide an effective way to retrieve and store information regarding various plant species in database as well as provide an effective means to characterize plants on the basis of leaf vein structure which is unique for every specie...

  10. Nutcracker Syndrome Complicated by Left Renal Vein Thrombosis

    Directory of Open Access Journals (Sweden)

    Faouzi Mallat

    2013-01-01

    Full Text Available Isolated renal vein thrombosis is a rare entity. We present a patient whose complaint of flank pain led to the diagnosis of a renal vein thrombosis. In this case, abdominal computed tomography angiography was helpful in diagnosing the nutcracker syndrome complicated by the renal vein thrombosis. Anticoagulation was started and three weeks later, CTA showed complete disappearance of the renal vein thrombosis. To treat the Nutcracker syndrome, we proposed left renal vein transposition that the patient consented to.

  11. Nutcracker syndrome complicated by left renal vein thrombosis.

    Science.gov (United States)

    Mallat, Faouzi; Hmida, Wissem; Jaidane, Mehdi; Mama, Nadia; Mosbah, Faouzi

    2013-01-01

    Isolated renal vein thrombosis is a rare entity. We present a patient whose complaint of flank pain led to the diagnosis of a renal vein thrombosis. In this case, abdominal computed tomography angiography was helpful in diagnosing the nutcracker syndrome complicated by the renal vein thrombosis. Anticoagulation was started and three weeks later, CTA showed complete disappearance of the renal vein thrombosis. To treat the Nutcracker syndrome, we proposed left renal vein transposition that the patient consented to.

  12. Gonadal vein tumor thrombosis due to renal cell carcinoma.

    Science.gov (United States)

    Haghighatkhah, Hamidreza; Karimi, Mohammad Ali; Taheri, Morteza Sanei

    2015-01-01

    Renal cell carcinoma (RCC) had a tendency to extend into the renal vein and inferior vena cava, while extension into the gonadal vein has been rarely reported. Gonadal vein tumor thrombosis appears as an enhancing filling defect within the dilated gonadal vein anterior to the psoas muscle and shows an enhancement pattern identical to that of the original tumor. The possibility of gonadal vein thrombosis should be kept in mind when looking at an imaging study of patients with RCC.

  13. TECHOS VERDES COMO SOLUCIÓN AL PROBLEMA DE INUNDACIONES EN MEDIOS URBANOS

    Directory of Open Access Journals (Sweden)

    López, N.

    2015-12-01

    Full Text Available El presente trabajo de investigación se realizó empleando modelos matemáticos, con la finalidad de comparar la escorrentía producida en un urbanismo con condiciones actuales de techos de tejas criollas, contra otro donde se usan estructuras o dispositivos de almacenamiento y retención de agua en casas, patios, parcelas, calles y contra urbanismos en general. Se seleccionó una zona de estudio en el Estado Lara (Venezuela, en el municipio Palavecino, en las inmediaciones de la Quebrada Tabure, considerando los techos verdes desde el punto de vista de reductores de escorrentía. Se elaboró una aplicación llamada “TechosVerdes.py” en el programa de licencia libre Python, con aproximadamente 4600 líneas de código para calcular los hidrogramas de los techos, patios, calles y áreas verdes, basándose en un mosaico creado con imágenes tipo raster en el programa Quantum Gis. La investigación se basó en la comparación directa de trece escenarios hipotéticos, donde se utilizó techos verdes y adicionalmente, tanques de almacenamiento y brocales, con un escenario original en condiciones actuales, sin alteraciones. Se obtuvo como resultado en los hidrogramas calculados para los escenarios hipotéticos, que el caudal pico disminuye, achatándose el hidrograma. This research was carried out using mathematical models in order to compare the runoff from an urban planning with handmade tiles roofs in actual conditions, with one where structures or storage devices and water retention in houses, yards are used, parcels, streets and housing complexes in general. A study area in the state of Lara, Venezuela, in Palavecino municipality, near Quebrada Tabure, was selected and green roofs are considered from the point of view of reducing runoff. An application called "TechosVerdes.py" was made under the license free Python program with approximately 4600 code lines was developed to calculate hydrographs from roofs, patios, streets and green areas

  14. 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.

  15. Corrosion cast study of the canine hepatic veins.

    Science.gov (United States)

    Uršič, M; Vrecl, M; Fazarinc, G

    2014-11-01

    This study presents a detailed description of the distribution, diameters and drainage patterns of hepatic veins on the basis of the corrosion cast analysis in 18 dogs. We classified the hepatic veins in three main groups: the right hepatic veins of the caudate process and right lateral liver lobe, the middle hepatic veins of the right medial and quadrate lobes and the left hepatic veins of both left liver lobes and the papillary process. The corrosion cast study showed that the number of the veins in the Nomina Anatomica Veterinaria and most anatomical textbooks is underestimated. The number of various-sized hepatic veins of the right liver division ranged from 3 to 5 and included 1 to 4 veins from the caudate process and 2 to 4 veins from the right lateral liver lobe. Generally, in all corrosion casts, one middle-sized vein from the right part of the right medial lobe, which emptied separately in the caudal vena cava, was established. The other vein was a large-sized vein from the remainder of the central division, which frequently joined the common left hepatic vein from the left liver lobes. The common left hepatic vein was the largest of all the aforementioned hepatic veins.

  16. Contaminación y viabilidad de huevos de Toxocara spp. en suelo y heces colectadas en parques públicos, calles y perros en Toluca, México

    OpenAIRE

    Camilo Romero-Núñez

    2013-01-01

    Se realizó un estudio de contaminación y viabilidad de huevos de Toxocara spp, parásito zoonótico en la ciudad de Toluca, México, para lo cual se colectaron 2374 muestras de suelos de siete parques, 350 de suelo de jardines de casas, 199 heces de perros con propietario y 199 heces obtenidas de la vía pública en las áreas cercanas a los parques. En los parques, la conta- minación con Toxocara fue de 24,7% y la viabilidad de 73,3%, siendo menor en los jardines de casa (13,9 y 40,3%, respe...

  17. Contaminación y viabilidad de huevos de Toxocara spp. en suelo y heces colectadas en parques públicos, calles y perros en Toluca, México

    OpenAIRE

    Camilo Romero-Núñez; Selene Yañez-Arteaga; Germán David Mendoza-Martínez; Lilia Patricia Bustamante-Montes; Ninfa Ramírez-Durán

    2013-01-01

    Se realizó un estudio de contaminación y viabilidad de huevos de Toxocara spp, parásito zoonótico en la ciudad de Toluca, México, para lo cual se colectaron 2374 muestras de suelos de siete parques, 350 de suelo de jardines de casas, 199 heces de perros con propietario y 199 heces obtenidas de la vía pública en las áreas cercanas a los parques. En los parques, la conta- minación con Toxocara fue de 24,7% y la viabilidad de 73,3%, siendo menor en los jardines de casa (13,9 y 40,3%, respe...

  18. Platigástridos (Hymenoptera: Platygastridae parasitoides de Pentatomidae en Córdoba. Caracterización de las masas de huevos parasitoidizadas y aspectos biológicos

    Directory of Open Access Journals (Sweden)

    Norma LA PORTA

    2013-01-01

    Full Text Available Se caracterizan las masas de huevos parasitoidizadas de pentatómidos per - tenecientes a cinco especies, cuatro fitófagas y una depredadora. Además, se analizan aspectos biológicos de esas oviposturas (abundancia y parasitoidismo y de sus para - sitoides (proporción sexual y emergencia: cinco especies de microhimenópteros plati - gástridos pertenecientes a los géneros Trissolcus Ashmead, Telenomus Haliday y Gryon Haliday . El análisis de las masas de huevos de pentatómidos en el campo apor ta indi - cadores exomorfológicos para determinar si están o no parasitoidizadas y, en algunos casos, conocer la especie de parasitoide emergente. Los altos niveles de parasitoidismo registrados en ambos sitios muestreados –Marcos Juárez y zona periurbana de Córdoba, sugieren que los parasitoides oófagos inciden de manera importante en las poblaciones de hemípteros presentes en el cultivo de soja. Las especies parasitoides mostraron una proporción de sexos marcadamente sesgada hacia las hembras, con un comportamiento similar respecto a cada huésped con el que interactuaron. Los porcentajes de emergencia resultaron más variables dependiendo de la especie parasitoide, del huésped y del sitio. El multiparasitoidismo fue registrado en todas las especies con excepción de Nezara viridula L. Telenomus podisi Ashmead fue el parasitoide común en las combinaciones observadas, resultando T. podisi-Trissolcus urichi Crawford la más frecuente.

  19. [Calcified deep vein thrombosis in a patient with recurrent deep vein thrombosis and sarcoidosis].

    Science.gov (United States)

    Krmek, Dubravka Zupanić; Brajković, Ivana; Bekić, Dinko; Krnić, Antun; Jurković, Petar; Pavlović, Tomislav

    2013-12-01

    In this article, we present a rare case of calcified deep vein thrombosis in a 42-year-old female patient with frequent relapses of pulmonary sarcoidosis since 1995, for which she was on maintenance therapy with corticosteroids and with consequential secondary diabetes. Recent femoral vein thrombosis was diagnosed with color Doppler in 2012. At the same time, calcified occlusive thrombus in vena cava inferior from the level of renal vein to the confluence of hepatic veins was diagnosed on abdominal multi-slice computed tomography (MSCT). Digital subtraction venography (DSV) revealed a well-developed collateral circulation through the paravertebral veins, azygos and hemiazygos vein. There were no risk factors for thrombosis other than sarcoidosis and diabetes. Deep vein thrombosis is rarely described with sarcoidosis, but according to literature reports, it usually appears as a recurrence and simultaneously at multiple locations. According to the current knowledge, we cannot say for sure whether it is a disease with an increased risk of deep vein thrombosis or there is a combination of multiple risk factors present simultaneously.

  20. Veining Failure and Hydraulic Fracturing in Shales

    Science.gov (United States)

    Mighani, S.; Sondergeld, C. H.; Rai, C. S.

    2014-12-01

    During the hydraulic fracturing, the pressurized fluid creates new fractures and reactivates existing natural fractures forming a highly conductive Stimulated Reservoir Volume (SRV) around the borehole. We extend the previous work on Lyons sandstone and pyrophyllite to anisotropic shale from the Wolfcamp formation. We divide the rock anisotropy into two groups: a) conventional and b) unconventional (shaly) anisotropy. X-ray Computed Tomography (CT), compressional velocity anisotropy, and SEM analysis are used to identify three causes of anisotropy: bedding planes, clay lamination, and calcite veins. Calcite vein is a subsequently filled with calcite bonded weakly to the matrix. Velocity anisotropy and visual observations demonstrate the calcite filled veins to be mostly subparallel to the fabric direction. Brazilian tests are carried out to observe the fracture initiation and propagation under tension. High speed photography (frame rate 300,000 frame/sec) was used to capture the failure. Strain gauges and Acoustic Emission (AE) sensors recorded the deformation leading up to and during failure. SEM imaging and surface profilometry were employed to study the post-failure fracture system and failed surface topology. Fracture permeability was measured as a function of effective stress. Brazilian tests on small disks containing a centered single vein revealed the shear strength of the veins. We interpret the strain data and number, frequency, and amplitude of AE events which are correlated well with the observed fracture process zone, surface roughness, and permeability. The unpropped fracture has enhanced permeability by two orders of magnitude. The observed anisotropic tensile failure seems to have a universal trend with a minimum strength occurring at 15o orientation with respect to the loading axis. The veins at 15o orientation with respect to the loading axis were easily activated at 30% of the original failure load. The measured strength of the vein is as low as 6

  1. A new approach for sclera vein recognition

    Science.gov (United States)

    Thomas, N. L.; Du, Yingzi; Zhou, Zhi

    2010-04-01

    The vein structure in the sclera is stable over time, unique to each person, and well suited for human identification. A few researchers have performed sclera vein pattern recognition and reported promising initial results. Sclera recognition poses several challenges: the vein structure moves and deforms with the movement of the eye; images of sclera patterns are often defocused and/or saturated; and, most importantly, the vein structure in the sclera is multi-layered and has complex non-linear deformation. In this paper, we proposed a new method for sclera recognition: First, we developed a color-based sclera region estimation scheme for sclera segmentation. Second, we designed a Gabor wavelet-based sclera pattern enhancement method, and an adaptive thresholding method to emphasize and binarize the sclera vein patterns. Third, we proposed a line descriptor-based feature extraction, registration, and matching method that is illumination-, scale-, orientation-, and deformation-invariant, and can mitigate the multi-layered deformation effects exhibited in the sclera and tolerate segmentation error. It is empirically verified using the UBIRIS database that the proposed method can perform accurate sclera recognition.

  2. Optimization of subcutaneous vein contrast enhancement

    Science.gov (United States)

    Zeman, Herbert D.; Lovhoiden, Gunnar; Deshmukh, Harshal

    2000-05-01

    A technique for enhancing the contrast of subcutaneous veins has been demonstrated. This techniques uses a near IR light source and one or more IR sensitive CCD TV cameras to produce a contrast enhanced image of the subcutaneous veins. This video image of the veins is projected back onto the patient's skin using a n LCD video projector. The use of an IR transmitting filter in front of the video cameras prevents any positive feedback from the visible light from the video projector from causing instabilities in the projected image. The demonstration contrast enhancing illuminator has been tested on adults and children, both Caucasian and African-American, and it enhances veins quite well in all cases. The most difficult cases are those where significant deposits of subcutaneous fat are present which make the veins invisible under normal room illumination. Recent attempts to see through fat using different IR wavelength bands and both linearly and circularly polarized light were unsuccessful. The key to seeing through fat turns out to be a very diffuse source of RI light. Results on adult and pediatric subjects are shown with this new IR light source.

  3. Ligation of superior mesenteric vein and portal to splenic vein anastomosis after superior mesenteric-portal vein confluence resection during pancreaticoduodenectomy – Case report

    Science.gov (United States)

    Tang, Jianlin; Abbas, Jihad; Hoetzl, Katherine; Allison, David; Osman, Mahamed; Williams, Mallory; Zelenock, Gerald B.

    2014-01-01

    62 year old Caucasian female with pancreatic head mass abutting the superior mesenteric vein (SMV) presented with fine needle aspiration biopsy confirmed diagnosis of ductal adenocarcinoma. CT scan showed near complete obstruction of portal vein and large SMV collateral development. After 3 months of neoadjuvant therapy, her portal vein flow improved significantly, SMV collateral circulation was diminished. Pancreaticoduodenectomy (PD) and superior mesenteric portal vein (SMPV) confluence resection were performed; A saphenous vein interposition graft thrombosed immediately. The splenic vein remnant was distended and adjacent to the stump of the portal vein. Harvesting an internal jugular vein graft required extra time and using a synthetic graft posed a risk of graft thrombosis or infection. As a result, we chose to perform a direct anastomosis of the portal and splenic vein in a desperate situation. The anastomosis decompressed the mesenteric venous system, so we then ligated the SMV. The patient had an uneventful postoperative course, except transient ascites. She redeveloped ascites more than one year later. At that time a PET scan showed bilateral lung and right femur metastatic disease. She expired 15 months after PD. Conclusion The lessons we learned are (1) Before SMPV confluence resection, internal jugular vein graft should be ready for reconstruction. (2) Synthetic graft is an alternative for internal jugular vein graft. (3) Direct portal vein to SMV anastomosis can be achieved by mobilizing liver. (4) It is possible that venous collaterals secondary to SMV tumor obstruction may have allowed this patient's post-operative survival. PMID:25568802

  4. 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)

  5. 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

  6. MRI manifestations of enlarged superior ophthalmic vein

    Institute of Scientific and Technical Information of China (English)

    WEI Rui-li; MA Xiao-ye; CAI Ji-ping; ZHU Huang

    2002-01-01

    Objective:To assess MRI in the evaluation of enlarged superior ophthalmic vein (SOV). Methods: MRI manifestations and etiology of forty-six patients with enlarged SOV were analyzed. Results: SOV enlargement was noted to occur in carotid-cavernous fistula, ophthalmic Graves'disease, Tolosa-Hunt syndrome, inflammation at the apex of the orbit, orbital pseudotumor and thrombosis of cavernous sinus. The dilated vein appeared as signal void tubular shadows on both T1 and T2 weighted images. The diameter of the enlarged vein was 3.5-6.0 mm. Extraocular muscle enlargement, orbital pathologies, enlarged carotid cavernous sinus etc were also revealed by MRI. Conclusion: The dilated SOV may be well demonstrated by MRI. The etiological diagnosis of enlarged SOV can be made in combination with the associated findings.

  7. Pathogenesis of varicose veins - lessons from biomechanics.

    Science.gov (United States)

    Pfisterer, Larissa; König, Gerd; Hecker, Markus; Korff, Thomas

    2014-03-01

    The development of varicose veins or chronic venous insufficiency is preceded by and associated with the pathophysiological remodelling of the venous wall. Recent work suggests that an increase in venous filling pressure is sufficient to promote varicose remodelling of veins by augmenting wall stress and activating venous endothelial and smooth muscle cells. In line with this, known risk factors such as prolonged standing or an obesity-induced increase in venous filling pressure may contribute to varicosis. This review focuses on biomechanically mediated mechanisms such as an increase in wall stress caused by venous hypertension or alterations in blood flow, which may be involved in the onset of varicose vein development. Finally, possible therapeutic options to counteract or delay the progress of this venous disease are discussed.

  8. Vein versus tragal perichondrium in stapedotomy.

    Science.gov (United States)

    Schmerber, Sébastien; Cuisnier, Olivier; Charachon, Robert; Lavieille, Jean-Pierre

    2004-09-01

    To assess, in otosclerosis surgery, whether the vein or the tragal perichondrium in stapedotomy with interposition yields the better long-term hearing outcome. A retrospective chart review of prospectively collected audiometric data of 452 ears. Academic tertiary otology-neurotology referral center. Four hundred fifty-two stapedotomies with interposition were performed in 412 patients (bilateral in 40 patients) by the senior author (R.C.) between 1987 and 1998. A tragal perichondrium graft was used in 314 cases and a vein graft was used in 138 cases as sealing material of the oval window. Audiometric data were recorded at 4 months, at 1 year, and at 3 years after surgery after American Academy of Otolaryngology-Head and Neck Surgery guidelines, except for thresholds at 3 kHz, which were not available and which were replaced with those at 4 kHz. There were no significant intergroup differences in initial or late postoperative hearing outcome with regard to change in the pure-tone average bone conduction and air-bone gaps, or sensorineural hearing loss. Ears treated with a vein graft showed statistically better postoperative 2-kHz air-bone gap closure (p =0.0157), but the pure-tone average air-bone gap difference was not significant. Postoperative air-bone gap closure to within 10 dB was achieved in 91% of cases in the vein group and in 76% of cases in the perichondrium group. Specific study of the bone conduction level at 4 kHz showed a sensorineural hearing loss greater than 10 dB in 8% of cases in the vein group and in 11% of cases in the perichondrium group. One case of complete sensorineural hearing loss was observed with a tragal perichondrium graft (0.22%). These results suggest that the vein should be preferred to the tragal perichondrium in stapedotomy with interposition.

  9. 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

  10. Duplicated Ižnternal Juguler Vein

    Directory of Open Access Journals (Sweden)

    Ahmet Kirbas

    2014-03-01

    Full Text Available    Duplicated internal juguler vein (DIJV is a rare anomaly and reported incidence is 0.4 % in the literature. A 45-year-old female patient was referred to our hospital because of non pulsatile neck swelling. The magnetic resonance image (MRI showed left IJVs divided at the angles of the mandible running anterior to the common carotid artery until anterior mediastinal level. Clinicians should be aware of the rare possibility of duplicated IJVs in patients presenting with neck swelling. The development of imaging technics have revealed more cases of duplicated internal juguler vein.

  11. Deep vein thrombosis: a clinical review

    Directory of Open Access Journals (Sweden)

    Kesieme EB

    2011-04-01

    Full Text Available Emeka Kesieme1, Chinenye Kesieme2, Nze Jebbin3, Eshiobo Irekpita1, Andrew Dongo11Department of Surgery, Irrua Specialist Teaching Hospital, Irrua, Nigeria; 2Department of Paediatrics, Irrua Specialist Teaching Hospital, Irrua, Nigeria; 3Department of Surgery, University of Port Harcourt Teaching Hospital, Port-Harcourt, NigeriaBackground: Deep vein thrombosis (DVT is the formation of blood clots (thrombi in the deep veins. It commonly affects the deep leg veins (such as the calf veins, femoral vein, or popliteal vein or the deep veins of the pelvis. It is a potentially dangerous condition that can lead to preventable morbidity and mortality.Aim: To present an update on the causes and management of DVT.Methods: A review of publications obtained from Medline search, medical libraries, and Google.Results: DVT affects 0.1% of persons per year. It is predominantly a disease of the elderly and has a slight male preponderance. The approach to making a diagnosis currently involves an algorithm combining pretest probability, D-dimer testing, and compression ultrasonography. This will guide further investigations if necessary. Prophylaxis is both mechanical and pharmacological. The goals of treatment are to prevent extension of thrombi, pulmonary embolism, recurrence of thrombi, and the development of complications such as pulmonary hypertension and post-thrombotic syndrome.Conclusion: DVT is a potentially dangerous condition with a myriad of risk factors. Prophylaxis is very important and can be mechanical and pharmacological. The mainstay of treatment is anticoagulant therapy. Low-molecular-weight heparin, unfractionated heparin, and vitamin K antagonists have been the treatment of choice. Currently anticoagulants specifically targeting components of the common pathway have been recommended for prophylaxis. These include fondaparinux, a selective indirect factor Xa inhibitor and the new oral selective direct thrombin inhibitors (dabigatran and selective

  12. Renal actinomycosis with concomitant renal vein thrombosis.

    Science.gov (United States)

    Chang, Dong-Suk; Jang, Won Ik; Jung, Ji Yoon; Chung, Sarah; Choi, Dae Eun; Na, Ki-Ryang; Lee, Kang Wook; Shin, Yong-Tai

    2012-02-01

    Renal actinomycosis is a rare infection caused by fungi of the genus Actinomyces. A 74-year-old male was admitted to our hospital because of gross hematuria with urinary symptoms and intermittent chills. Computed tomography of the abdomen showed thrombosis in the left renal vein and diffuse, heterogeneous enlargement of the left kidney. After nephrectomy, sulfur granules with chronic suppurative inflammation were seen microscopically, and the histopathological diagnosis was renal actinomycosis. Our case is the first report of renal actinomycosis with renal vein thrombosis.

  13. Portal vein thrombosis in patients with cirrhosis

    DEFF Research Database (Denmark)

    von Köckritz, Leona; De Gottardi, Andrea; Trebicka, Jonel

    2017-01-01

    Portal vein thrombosis (PVT) is frequent in patients with liver cirrhosis and possible severe complications such as mesenteric ischemia are rare, but can be life-threatening. However, different aspects of clinical relevance, diagnosis and management of PVT are still areas of uncertainty and inves......Portal vein thrombosis (PVT) is frequent in patients with liver cirrhosis and possible severe complications such as mesenteric ischemia are rare, but can be life-threatening. However, different aspects of clinical relevance, diagnosis and management of PVT are still areas of uncertainty...

  14. Postpartum Ovarian Vein Thrombophlebitis with Staphylococcal Bacteremia

    Science.gov (United States)

    Parino, Eduardo; Mulinaris, Eric; Saccomano, Edgardo; Gallo, Juan Cruz; Kohan, Gabriel

    2015-01-01

    A 34-year-old female patient presented with fever and right flank pain ten days after uncomplicated vaginal delivery. CT examination revealed right ovarian vein thrombosis and methicillin-resistant Staphylococcus aureus (MRSA) was isolated from blood cultures. No other source of bacteremia was found. Antibiotic therapy and anticoagulation with enoxaparin were instituted. Fourteen days after admission, she was discharged in good condition. Although a very uncommon complication after spontaneous vaginal delivery, septic ovarian vein thrombophlebitis should be suspected in cases of persistent puerperal fever when other diagnostic possibilities have been excluded. PMID:26221549

  15. 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.

  16. El viaje espiritual al 'espacio verde': el 'jardín de la visión' en el sufismo

    OpenAIRE

    Gonzalo Carbó, Antoni

    2007-01-01

    El viaje espiritual al «espacio verde» es un recorrido por el significado simbólico del color verde, el color litúrgico y espiritual del Islam, tomando como punto de partida la obra de dos artistas iraníes contemporáneos: Suhrab Sepehri y Shirin Neshat. Desde las antiguas religiones del Oriente Próximo hasta el Islam, el verde es el color del firmamento espiritual, el de los vergeles del Paraíso, la tierra del más allá. El jardín verdeante que alcanza el alma difunta (den) en el mazdeísmo, el...

  17. 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.

  18. 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.

  19. 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.

  20. Image Quality Enhancement Using the Direction and Thickness of Vein Lines for Finger-Vein Recognition

    Directory of Open Access Journals (Sweden)

    Young Ho Park

    2012-10-01

    Full Text Available On the basis of the increased emphasis placed on the protection of privacy, biometric recognition systems using physical or behavioural characteristics such as fingerprints, facial characteristics, iris and finger-vein patterns or the voice have been introduced in applications including door access control, personal certification, Internet banking and ATM machines. Among these, finger-vein recognition is advantageous in that it involves the use of inexpensive and small devices that are difficult to counterfeit. In general, finger-vein recognition systems capture images by using near infrared (NIR illumination in conjunction with a camera. However, such systems can face operational difficulties, since the scattering of light from the skin can make capturing a clear image difficult. To solve this problem, we proposed new image quality enhancement method that measures the direction and thickness of vein lines. This effort represents novel research in four respects. First, since vein lines are detected in input images based on eight directional profiles of a grey image instead of binarized images, the detection error owing to the non-uniform illumination of the finger area can be reduced. Second, our method adaptively determines a Gabor filter for the optimal direction and width on the basis of the estimated direction and thickness of a detected vein line. Third, by applying this optimized Gabor filter, a clear vein image can be obtained. Finally, the further processing of the morphological operation is applied in the Gabor filtered image and the resulting image is combined with the original one, through which finger-vein image of a higher quality is obtained. Experimental results from application of our proposed image enhancement method show that the equal error rate (EER of finger-vein recognition decreases to approximately 0.4% in the case of a local binary pattern-based recognition and to approximately 0.3% in the case of a wavelet transform

  1. The continental slope current system between Cape Verde and the Canary Islands

    Directory of Open Access Journals (Sweden)

    Jesús Peña-Izquierdo

    2012-08-01

    Full Text Available We use hydrographic, velocity and drifter data from a cruise carried out in November 2008 to describe the continental slope current system in the upper thermocline (down to 600 m between Cape Verde and the Canary Islands. The major feature in the region is the Cape Verde Frontal Zone (CVFZ, separating waters from tropical (southern and subtropical (northern origin. The CVFZ is found to intersect the slope north of Cape Blanc, between 22°N and 23°N, but we find that southern waters are predominant over the slope as far north as 24°N. South of Cape Blanc (21.25°N the Poleward Undercurrent (PUC is a prominent northward jet (50 km wide, reaching down to 300 m and indistinguishable from the surface Mauritanian Current. North of Cape Blanc the upwelling front is found far offshore, opening a near-slope northward path to the PUC. Nevertheless, the northward PUC transport decreases from 2.8 Sv at 18°N to 1.7 Sv at 24°N, with about 1 Sv recirculating ofshore just south of Cape Blanc, in agreement with the trajectory of subsurface drifters. South of the CVFZ there is an abrupt thermohaline transition at σϴ=26.85 kg m–3, which indicates the lower limit of the relatively pure (low salt and high oxygen content South Atlantic Central Water (SACW variety that coexists with the dominant locally-diluted (salinity increases through mixing with North Atlantic Central Water but oxygen diminishes because of enhanced remineralization Cape Verde (SACWcv variety. At 16°N about 70% of the PUC transport corresponds to the SACW variety but but this is transformed into 40% SACWcv at 24°N. However, between Cape Verde and Cape Blanc and in the 26.85 < σϴ < 27.1 layer, we measure up to 0.8 Sv of SACWcv being transported south. The results strongly endorse the idea that the slope current system plays a major role in tropical-subtropical water-mass exchange.

  2. Seasonal patterns of Saharan dust over Cape Verde – a combined approach using observations and modelling

    Directory of Open Access Journals (Sweden)

    Carla Gama

    2015-02-01

    Full Text Available A characterisation of the dust transported from North Africa deserts to the Cape Verde Islands, including particle size distribution, concentrations and optical properties, for a complete annual cycle (the year 2011, is presented and discussed. The present analysis includes annual simulations of the BSC-DREAM8b and the NMMB/BSC-Dust models, 1-yr of surface aerosol measurements performed within the scope of the CV-DUST Project, AERONET direct-sun observations, and back-trajectories. A seasonal intrusion of dust from North West Africa affects Cape Verde at surface levels from October till March when atmospheric concentrations in Praia are very high (PM10 observed concentrations reach hourly values up to 710 µg/m3. The air masses responsible for the highest aerosol concentrations in Cape Verde describe a path over the central Saharan desert area in Algeria, Mali and Mauritania before reaching the Atlantic Ocean. During summer, dust from North Africa is transported towards the region at higher altitudes, yielding to high aerosol optical depths. The BSC-DREAM8b and the NMMB/BSC-Dust models, which are for the first time evaluated for surface concentration and size distribution in Africa for an annual cycle, are able to reproduce the majority of the dust episodes. Results from NMMB/BSC-Dust are in better agreement with observed particulate matter concentrations and aerosol optical depth throughout the year. For this model, the comparison between observed and modelled PM10 daily averaged concentrations yielded a correlation coefficient of 0.77 and a 29.0 µg/m3 ‘bias’, while for BSC-DREAM8b the correlation coefficient was 0.63 and ‘bias’ 32.9 µg/m3. From this value, 12–14 µg/m3 is due to the sea salt contribution, which is not considered by the model. In addition, the model does not take into account biomass-burning particles, secondary pollutants and local sources (i.e., resuspension. These results roughly allow for the establishment of a

  3. Techos verdes y el confort térmico en Angostillo, Veracruz, México.

    OpenAIRE

    Beltrán Melgarejo, Abraham

    2013-01-01

    Se diseñó un prototipo de techo verde con enredaderas tropicales y se evaluó el confort térmico brindado por éste en viviendas de una zona rural tropical. Con base en entrevistas a viveristas de la región centro de Veracruz y un recorrido de campo, se preseleccionaron cinco especies Mandevilla sanderi, Solandra maxima, Passiflora edulis, Thunbergia alata y Cissus verticillata. Se evaluó la adaptabilidad de éstas al ambiente sobre techos modelo en condiciones de campo, midiendo sus tasas de cr...

  4. Aprofitant cada engruna de calor : el Tub Verd de Mataró

    OpenAIRE

    Alerm, Llorenç

    2012-01-01

    La calor residual de diverses infraestructures mediambientals permet distribuir calor i fred al seu entorn urbà. Es tracta d’un aprofitament energètic que redueix contaminació, emissions de CO2 i importacions de combustible. Una estratègia que fa anys que funciona a diversos països del món: al centre i nord d’Europa fa temps que hi està força estesa, i més recentment ha arribat aquí, amb iniciatives com la del Tub Verd de Mataró.

  5. 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

  6. Estudo prospectivo, duplo cego e cruzado da Camellia sinensis (chá verde) nas dislipidemias

    OpenAIRE

    Batista,Gesiani de Almeida Pierin; Cunha,Cláudio L. Pereira da; Scartezini, Mariléia; von der Heyde,Raul; Murílo G Bitencourt; Melo,Sandra Fabrício de

    2009-01-01

    FUNDAMENTO: Estudos epidemiológicos estabeleceram uma associação entre dislipidemias e aterosclerose. A terapia nutricional é um ponto central da estratégia preventiva em indivíduos que apresentam fatores de risco para doença aterosclerótica. OBJETIVOS: Investigar os efeitos do chá verde (Camellia sinensis) em pacientes portadores de dislipidemias. MÉTODOS: O estudo envolveu 33 pacientes, com idade entre 21 e 71 anos, que consumiam uma dieta com baixo teor de gorduras (25% a 35% das calorias ...

  7. INDICADORES BIOFÍSICOS DE DESERTIFICAÇÃO, CABO VERDE/ÁFRICA

    OpenAIRE

    Vládia Pinto Vidal de Oliveira

    2011-01-01

    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 at...

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

    Science.gov (United States)

    Abarca, Marco A

    2010-01-01

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

  9. 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.

  10. Caracterização da farinha de banana verde Green banana flour characterization

    OpenAIRE

    Antonia de Maria Borges; Joelma Pereira; Eliseu Marlônio Pereira de Lucena

    2009-01-01

    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; fra...

  11. Macroinvertebrados bentónicos del humedal de Palo Verde, Costa Rica

    Directory of Open Access Journals (Sweden)

    F.A Trama

    2009-11-01

    Full Text Available El humedal de Palo Verde es uno de los más importantes de Centro America para aves acuáticas. Durante el período 2002 y 2005, se llevaron a cabo actividades de manejo para controlar la invasión de Typha domingensis. Con el fin de establecer una línea base para monitoreos futuros, en el 2003 se realizó una evaluación de macroinvertebrados acuáticos. Se efectuó un muestreo mensual durante un año, usando el método de sustratos artificiales. Se identificaron 116 táxones pertenecientes a 47 familias y a 18 órdenes. La mayor abundancia se encontró en la clase Conchostraca y la familia Chironomidae que juntas representaron casi la mitad de todos los individuos colectados. En contraste, el 97% de los táxones tuvieron, cada uno, menos del 1% del total de la abundancia. La diversidad de táxones, así como la abundancia de individuos y el número de especies, fueron mayores en la época seca que en la lluviosa. La curva acumulada de especies indicó que se hubiera registrado una mayor cantidad de táxones si los muestreos se hubieran extendido por más tiempo. Con este trabajo damos a conocer la primera lista de macroinvertebrados para el humedal de Palo Verde.Benthic macroinvertebrates of the Palo Verde wetland, Costa Rica. Palo Verde, Costa Rica, is one of the most important wetlands in the region now recovering from some invasive plants, especially Typha domingensis, and monitoring programs were started, including studies on the aquatic macoinvertebrate fauna. We sampled benthic macroinvertebrates monthly for more than a year with artificial substrates, and identified 116 taxa from 57 families and 18 orders, with 90 morfospecies of insects. The highest abundances were in the class Conchostraca (typical in seasonal wetlands and in the family Chironomidae (Diptera, Insecta, which together represent almost half of all individuals collected. In contrast, 97 taxa were less than 1% of total abundance each. Number of individuals and number of

  12. 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...

  13. 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...

  14. O verde que não era esperança

    OpenAIRE

    2012-01-01

    O arsenito de cobre, obtido originalmente há quase 240 anos, e popularizado sob o nome de “verde de Scheele”, ainda hoje é um tema que suscita interrogações quanto ao curso das aplicações que a sociedade emergente da revolução industrial lhe reservou, as quais estiveram na origem de um fenómeno de intoxicação com arsénio à escala global. O design e a moda deram-lhe grande uso; as contas bancárias de uns poucos beneficiaram muito. E os outros?

  15. The Use Of The VEINES-QOL/Sym Questionnaire In Patients Operated For Varicose Veins

    Directory of Open Access Journals (Sweden)

    Migdalski Łukasz

    2015-10-01

    Full Text Available Venous insufficiency is a common, chronic disease that affects nearly half of the population in highly developed countries. The vast majority of affected patients suffer from varicose veins (VV. Recently, the priority in medicine has been patient satisfaction with treatment and high quality of life. Therefore, disease-specific questionnaires that measure quality of life have been developed. One of these is VEINES-QOL/Sym with two subscales that assess quality of life and disease symptoms. To date, it has been used to examine patients with venous ulcers and thrombosis. No data are available concerning the use of VEINES to assess patients after VV surgery.

  16. An unusual case: right proximal ureteral compression by the ovarian vein and distal ureteral compression by the external iliac vein

    Directory of Open Access Journals (Sweden)

    Halil Ibrahim Serin

    2015-12-01

    Full Text Available A 32-years old woman presented to the emergency room of Bozok University Research Hospital with right renal colic. Multidetector computed tomography (MDCT showed compression of the proximal ureter by the right ovarian vein and compression of the right distal ureter by the right external iliac vein. To the best of our knowledge, right proximal ureteral compression by the ovarian vein together with distal ureteral compression by the external iliac vein have not been reported in the literature. Ovarian vein and external iliac vein compression should be considered in patients presenting to the emergency room with renal colic or low back pain and a dilated collecting system.

  17. Desarrollo de alimentos tipo snack de bajo contenido graso a partir de discos de manzana verde

    OpenAIRE

    Tavera Quiroz, María José

    2015-01-01

    Esta investigación se basó en el desarrollo de productos tipo snack bajos en grasa a partir de manzana verde Granny Smith (Malus domestica). Se desarrollaron snacks a partir de manzanas verdes estudiando diferentes alternativas de cocción (fritado, horneado o su combinación) con el objetivo de obtener productos con menor contenido graso que los tradicionales pero con las propiedades que los consumidores valoran en los mismos, como el color y la textura crocante. Para ello se analizó...

  18. Tratamento do líquido gerado no beneficiamento da casca de coco verde em sistema de lodos ativados

    OpenAIRE

    2007-01-01

    O principal impacto ambiental do processo de beneficiamento da casca de coco verde é a geração de resíduo líquido com elevada carga orgânica. Este trabalho teve como objetivo aplicar o sistema convencional de lodos ativados para o tratamento biológico do líquido gerado no beneficiamento da casca de coco verde, além de utilizar o teste de taxa de consumo de oxigênio (TCO) para avaliar a toxicidade do efluente ao lodo aeróbio. O reator de escala laboratorial foi inoculado com lodo proveniente d...

  19. Entre la publicidad social y la publicidad ambiental: una revisión de la contrapublicidad verde de Greenpeace

    OpenAIRE

    Martín Villar, Sara

    2015-01-01

    Este trabajo presenta un análisis y evolución de la publicidad social, sus efectos, características y tendencias en nuestra sociedad. Se conceptualiza la publicidad verde como medio de denuncia de lo social, y se realiza una recopilación de las acciones de Greenpeace y su contrapublicidad para detener la deforestación de los bosques de Indonesia. Una aproximación a los conceptos de publicidad social, publicidad ambiental, publicidad verde y contrapublicidad.

  20. TIJOLOS DE TERRA CRUA ESTABILIZADOS COM FIBRAS DE COCO VERDE: ALTERNATIVA PARA HABITAÇÃO DE INTERESSE SOCIAL

    OpenAIRE

    Soares, Raquel Nascimento; Silva, Adeildo Cabral; Pinheiro, Jose Cesar

    2008-01-01

    Este trabalho propõe a utilização da fibra de coco verde incorporada à terra crua como material alternativo na construção de tijolos de adobe. As fibras foram cedidas a partir de uma parceria com a EMBRAPA, onde é produzido em sua Unidade de Beneficiamento da Casca do Coco Verde cerca de 530 t/a de fibra bruta. A fibra inserida ao adobe tem características de agir como um esqueleto principal devido à presença de celulose, lignina e hemicelulose atuarem conferindo uma maior coesão entre os com...

  1. Endovascular Radiofrequency Ablation for Varicose Veins

    Science.gov (United States)

    2011-01-01

    Executive Summary Objective The objective of the MAS evidence review was to conduct a systematic review of the available evidence on the safety, effectiveness, durability and cost–effectiveness of endovascular radiofrequency ablation (RFA) for the treatment of primary symptomatic varicose veins. Background The Ontario Health Technology Advisory Committee (OHTAC) met on August 26th, 2010 to review the safety, effectiveness, durability, and cost-effectiveness of RFA for the treatment of primary symptomatic varicose veins based on an evidence-based review by the Medical Advisory Secretariat (MAS). Clinical Condition Varicose veins (VV) are tortuous, twisted, or elongated veins. This can be due to existing (inherited) valve dysfunction or decreased vein elasticity (primary venous reflux) or valve damage from prior thrombotic events (secondary venous reflux). The end result is pooling of blood in the veins, increased venous pressure and subsequent vein enlargement. As a result of high venous pressure, branch vessels balloon out leading to varicosities (varicose veins). Symptoms typically affect the lower extremities and include (but are not limited to): aching, swelling, throbbing, night cramps, restless legs, leg fatigue, itching and burning. Left untreated, venous reflux tends to be progressive, often leading to chronic venous insufficiency (CVI). A number of complications are associated with untreated venous reflux: including superficial thrombophlebitis as well as variceal rupture and haemorrhage. CVI often results in chronic skin changes referred to as stasis dermatitis. Stasis dermatitis is comprised of a spectrum of cutaneous abnormalities including edema, hyperpigmentation, eczema, lipodermatosclerosis and stasis ulceration. Ulceration represents the disease end point for severe CVI. CVI is associated with a reduced quality of life particularly in relation to pain, physical function and mobility. In severe cases, VV with ulcers, QOL has been rated to be as bad

  2. Varicose Veins: Role of Mechanotransduction of Venous Hypertension

    Science.gov (United States)

    Atta, Hussein M.

    2012-01-01

    Varicose veins affect approximately one-third of the adult population and result in significant psychological, physical, and financial burden. Nevertheless, the molecular pathogenesis of varicose vein formation remains unidentified. Venous hypertension exerted on veins of the lower extremity is considered the principal factor in varicose vein formation. The role of mechanotransduction of the high venous pressure in the pathogenesis of varicose vein formation has not been adequately investigated despite a good progress in understanding the mechanomolecular mechanisms involved in transduction of high blood pressure in the arterial wall. Understanding the nature of the mechanical forces, the mechanosensors and mechanotransducers in the vein wall, and the downstream signaling pathways will provide new molecular targets for the prevention and treatment of varicose veins. This paper summarized the current understanding of mechano-molecular pathways involved in transduction of hemodynamic forces induced by blood pressure and tries to relate this information to setting of venous hypertension in varicose veins. PMID:22489273

  3. Varicose Veins: Role of Mechanotransduction of Venous Hypertension

    Directory of Open Access Journals (Sweden)

    Hussein M. Atta

    2012-01-01

    Full Text Available Varicose veins affect approximately one-third of the adult population and result in significant psychological, physical, and financial burden. Nevertheless, the molecular pathogenesis of varicose vein formation remains unidentified. Venous hypertension exerted on veins of the lower extremity is considered the principal factor in varicose vein formation. The role of mechanotransduction of the high venous pressure in the pathogenesis of varicose vein formation has not been adequately investigated despite a good progress in understanding the mechanomolecular mechanisms involved in transduction of high blood pressure in the arterial wall. Understanding the nature of the mechanical forces, the mechanosensors and mechanotransducers in the vein wall, and the downstream signaling pathways will provide new molecular targets for the prevention and treatment of varicose veins. This paper summarized the current understanding of mechano-molecular pathways involved in transduction of hemodynamic forces induced by blood pressure and tries to relate this information to setting of venous hypertension in varicose veins.

  4. Brain vein disorders in newborn infants

    NARCIS (Netherlands)

    Raets, Marlou; Dudink, Jeroen; Raybaud, Charles; Ramenghi, Luca; Lequin, Maarten; Govaert, Paul

    2015-01-01

    The brain veins of infants are in a complex phase of remodelling in the perinatal period. Magnetic resonance venography and susceptibility-weighted imaging, together with high-resolution Doppler ultrasound, have provided new tools to aid study of venous developmental anatomy and disease. This review

  5. Endovascular vein harvest: systemic carbon dioxide absorption.

    Science.gov (United States)

    Maslow, Andrew M; Schwartz, Carl S; Bert, Arthur; Hurlburt, Peter; Gough, Jeffrey; Stearns, Gary; Singh, Arun K

    2006-06-01

    Endovascular vein harvest (EDVH) requires CO(2) insufflation to expand the subcutaneous space, allowing visualization and dissection of the saphenous vein. The purpose of this study was to assess the extent of CO(2) absorption during EDVH. Prospective observational study. Single tertiary care hospital. Sixty patients (30 EDVH and 30 open-vein harvest) undergoing isolated coronary artery bypass graft surgery. Hemodynamic, procedural, and laboratory data were collected prior to (baseline), during, and at it the conclusion (final) of vein harvesting. Data were also collected during cardiopulmonary bypass (CPB). Data were compared by using t tests, analysis of variance, and correlation statistics when needed. There were significant increases in arterial CO(2) (PaCO(2), 35%) and decreases in pH (1.35%) during EDVH. These were associated with increases in heart rate, mean blood pressure, and cardiac output. Within the EDVH group, greater elevations (>10 mmHg) in PaCO2 were more likely during difficult harvest procedures, and these patients exhibited greater increase in heart rate. Elevated CO(2) persisted during CPB, requiring higher systemic gas flows and greater use of phenylephrine to maintain desired hemodynamics. EDVH was associated with systemic absorption of CO(2). Greater absorption was more likely in difficult procedures and was associated with greater hemodynamic changes requiring medical therapy.

  6. Puzzles in practice: splenic vein thrombosis.

    Science.gov (United States)

    McIntyre, Brittany; Marsh, Melanie; Walden, Jeffrey

    2016-06-01

    This report details a 58-year-old gentleman who presented to his outpatient primary care physician's clinic several times over four weeks for ongoing epigastric pain radiating into his left flank, dry heaving, and constipation. He was presumed to have gastritis at each visit and prescribed escalating doses of proton pump inhibitors. Due to the unrelenting pain, he eventually was admitted to the hospital and diagnosed with splenic vein thrombosis after computed tomography imaging of the abdomen. Our literature search revealed that pancreatic pathology is overwhelmingly the contributing factor to splenic vein thrombosis. Our patient had prominent collateral vasculature, suggesting that his splenic vein thrombosis was chronic in nature and likely the cause of his ongoing abdominal pain. Splenic vein thrombosis is an uncommon cause of abdominal pain, but one that should be included in the treating physician's differential diagnoses when abdominal pain is ongoing despite medical therapy. Although he had no evidence of initial findings on radiography, our patient was eventually diagnosed with biopsy-proven pancreatic cancer. Our case report demonstrates how patients presenting with persistent or worsening abdominal pain despite the use of proton pump inhibitors or other acid reducing agents and potential 'red flag' findings such as decreased appetite and weight loss should be worked up for other potential sources of abdominal pathology.

  7. A RARE VARIATION OF GREAT SAPHENOUS VEIN

    Directory of Open Access Journals (Sweden)

    Nakhate Manisha

    2014-11-01

    Full Text Available The venous system is more complex and variable than arterial system due to its frequent anatomical variations. This paper discusses the anatomy of the great saphenous vein and its variation observed in a male cadaver of around 60 years old.

  8. RETINAL VEIN OCCLUSIONS - A CLINICAL STUDY

    Directory of Open Access Journals (Sweden)

    Ramadevi

    2015-11-01

    Full Text Available Retinal vein occlusion is the most common retinal occlusive disorder encountered by opthalmologists and is usually associated with a variable amount of visual loss.The study was conducted over a period of 22 months, we performed a combined analysis of risk factors, clinical presentation, management and complication of these 51 patients

  9. Risk factors of thrombosis in abdominal veins

    Institute of Scientific and Technical Information of China (English)

    Amit Kumar Durra; Ashok Chacko; Biju George; Joseph Anjilivelil Joseph; Sukesh Chandran Nair; Vikram Mathews

    2008-01-01

    AIM: To estimate the prevalence of inherited and acquired thrombophilic risk factors in patients with abdominal venous thrombosis and to compare the risk factor profiles between Budd-Chiari syndromes (BCS) and splanchnic vein thrombosis (SVT).METHODS: In this retrospective study, 36 patients with abdominal venous thrombosis were studied.The patients were divided into Budd-Chiari group (hepatic vein, IVC thrombosis) and splanchnic venous thrombosis group (portal, splenic, superior mesenteric veins) based on the veins involved. Hereditary and acquired thrombophilic risk factors were evaluated in all patients.RESULTS: Twenty patients had SVT, 14 had BCS,and 2 had mixed venous thrombosis. Ten patients (28%) had hereditary and 10 patients (28%) acquired thrombophilic risk factors. The acquired risk factors were significantly more common in the SVT group (SVT vs BCS:45% vs 7%,x2=5.7,P=0.02) while hereditary risk factors did not show significant differences between the two groups (SVT vs BCS: 25%vs 36%, x2=0.46,P=0.7). Multiple risk factors were present in one (7%) patient with BCS and in 3 patients (15%) with SVT. No risk factors were identified in 57% of patients with BCS and in 45% of patients with SVT.CONCLUSION: Hereditary and acquired risk factors play an important role in the etiopathogenesis of abdominal venous thrombosis. Acquired risk factors are significantly more common in SVT patients while hereditary factors are similar in both groups.

  10. Gene Variants Associated With Deep Vein Thrombosis

    NARCIS (Netherlands)

    Bezemer, Irene D.; Bare, Lance A.; Doggen, Carine J.M.; Arellano, Andre R.; Tong, Carmen; Rowland, Charles M.; Catanese, Joseph; Young, Bradford A.; Reitsma, Pieter H.; Devlin, James J.; Rosendaal, Frits R.

    2008-01-01

    Context The genetic causes of deep vein thrombosis (DVT) are not fully understood. Objective To identify single-nucleotide polymorphisms (SNPs) associated with DVT. Design, Setting, and Patients We used 3 case-control studies of first DVT. A total of 19 682 gene-centric SNPs were genotyped in 44

  11. Small saphenous vein: where does reflux go?

    Directory of Open Access Journals (Sweden)

    Guillermo Gustavo Rossi

    2013-06-01

    Full Text Available BACKGROUND: The anatomy of small saphenous vein (SSV is very variable because of its complex embryological origin. SSV incompetence often causes reflux that goes to the perforating veins, sometimes not respecting the anatomical course. OBJECTIVE: To analyze differences in reflux direction and reentry in the SSV. METHODS: In this prospective, observational study, 60 lower limbs with SSV incompetence of 43 patients were assessed using a color Doppler ultrasound protocol. RESULTS: Reentry variations were grouped into four types and subtypes. Percentage results were: Type A, perforating veins on the medial side = 25/60 cases (41.66%; subtypes: Cockett, Sherman, paratibial and vertex; Type B, lateral malleolus and perforating veins on the lateral side (fibular 17-26 cm = 15/60 cases (25%; subtypes: fibular and malleolus; Type C, two branches = 19/60 cases (31.66%; subtypes: gastrocnemius and Cockett, gastrocnemius and malleolus, and/or fibular, Cockett and malleolus, Cockett-vertex and fibular; Type D, reflux in the superficial system = 1/60 cases (1.66%. CONCLUSION: On most of the lower limbs assessed, reflux did not follow the classical anatomic course. Our findings demonstrated a high degree of variation in reflux/reentry, but no SSV anatomical variations. Reflux seems to, either look for the most accessible anatomical connection for reentry or be originated in the distal area and then reach the SSV.

  12. Effects of continuous drought and immersion on hatchability of Ochlerotatus albifasciatus (Diptera: Culicidae eggs stored at low temperature Efecto de la sequía continua y la inmersión sobre la respuesta de eclosión de los huevos de Ochlerotatus albifasciatus (Diptera: Culicidae almacenados a baja temperatura

    Directory of Open Access Journals (Sweden)

    Raúl E Campos

    2007-07-01

    Full Text Available The role of environmental factors on the hatching response of O. albifasciatus (Macquart eggs is studied by simulating winter conditions in the laboratory. The hypothesis tested was that hatching response is affected by: (1 time that eggs remain at low temperature, (2 storage conditions, and (3 acclimatization time. Eggs were stored at 5ºC in drought and immersion conditions during 7, 21, 35, 90 and 146 days, immediately after, they were acclimatized at 22ºC during 24, 72, and 168 hours, and then eggs were flooded to induce hatching. Percent of hatched eggs was analyzed with a Generalized Lineal Model with a binomial distribution. Results show that: (1 a long storage period at cold temperature and long acclimatization periods improve the hatching response; (2 storage conditions have a moderate effect on hatching, being more evident in eggs stored dry; (3 a long time of acclimatization favors the hatching response in submerged eggs more than in eggs stored dry; (4 long time at cold favors the hatching response in eggs stored dry more than in submerged eggs; (5 the hatching response of eggs that remain for a long time at low temperature is higher when the time of acclimatization is long.Se estudió el rol de los factores ambientales sobre la eclosión de los huevos de O. albifasciatus (Macquart, simulando condiciones de invierno. La hipótesis planteada fue que la respuesta de eclosión de los huevos depende de: (1 tiempo de permanencia a baja temperatura, (2 condiciones de almacenamiento, y (3 tiempo de aclimatación. Los huevos fueron almacenados a 5º C en condiciones de sequía y sumergidos durante 7, 21, 35, 90 y 146 días; luego fueron aclimatados a 22º C durante 24, 72, y 168 horas y posteriormente inundados para inducir la eclosión. El porcentaje de huevos eclosionados se analizó con un Modelo Lineal Generalizado con distribución binomial. Los resultados mostraron que: (1 largos períodos de almacenamiento en frío y largos tiempos

  13. Evaluation of left renal vein entrapment using multidetector computed tomography

    Energy Technology Data Exchange (ETDEWEB)

    Poyraz, Ahmet K.; Onur, Mehmet R. [Dept. of Radiology, Firat Univ. School of Medicine, Elazig (Turkey)], e-mail: akursadpoyraz@yahoo.com.tr; Firdolas, Fatih [Dept. of Urology, Firat Univ. School of Medicine, Elazig (Turkey); Kocakoc, Ercan [Dept. of Radiology, Bezmialem Vakif Univ., School of Medicine, Istanbul (Turkey)

    2013-03-15

    Background: Nutcracker syndrome, also called left renal vein entrapment syndrome, is a cause of non-glomerular hematuria with difficulties in diagnosis. Multidetector computed tomography (MDCT) is a powerful tool to prevent unnecessary diagnostic procedures. Purpose: To retrospectively determine the prevalence of nutcracker phenomenon and nutcracker syndrome seen in MDCT in consecutive patients. Material and Methods: The institutional review board approved the study and waived the requirement for informed consent. Abdominal contrast-enhanced MDCT scans were reviewed from 1000 consecutive patients. MDCT scan assessment included renal vein diameter measurements and evaluation for the presence of anterior or posterior left renal vein entrapment. Electronic medical records and urine analysis reports of patients with left renal vein entrapment were reviewed. Student's t test was used to assess differences in renal vein diameter in patients with left renal vein entrapment. Results: Left renal vein entrapment was observed in 10.9% (109), retroaortic left renal vein in 6.5% (65), entrapment of left renal vein between superior mesenteric artery and aorta in 4.1% (41), and circumaortic left renal vein in 0.3% (3) of patients. Mean diameters of right (8.8 {+-} 1.9 mm) and unentrapped left (8.9 {+-} 1.8 mm) renal veins were not significantly different (P = 0.1). The mean diameter of anterior entrapped left renal veins (10.3 {+-} 2 mm) was significantly greater (P = 0.04) than contralateral renal veins (8.6 {+-} 2.1 mm) in their widest portion. In 8.8% of patients with the left renal vein entrapment, urine analysis showed isomorphic hematuria or proteinuria with no other known cause. Varicocele and pelvic congestion were seen in 5.5% of patients with the left renal vein entrapment. Conclusion: Left renal vein entrapment is not a rare entity and renal nutcracker phenomenon might be underdiagnosed.

  14. Image Quality Enhancement Using the Direction and Thickness of Vein Lines for Finger-Vein Recognition

    OpenAIRE

    Young Ho Park; Kang Ryoung Park

    2012-01-01

    On the basis of the increased emphasis placed on the protection of privacy, biometric recognition systems using physical or behavioural characteristics such as fingerprints, facial characteristics, iris and finger‐vein patterns or the voice have been introduced in applications including door access control, personal certification, Internet banking and ATM machines. Among these, finger‐vein recognition is advantageous in that it involves the use of inexpensive and small devices that are diffic...

  15. Adventitial cystic disease of the common femoral vein presenting as deep vein thrombosis

    Directory of Open Access Journals (Sweden)

    Young-Kyun Kim

    2016-07-01

    Full Text Available Adventitial cystic disease of the common femoral vein is a rare condition. We herein report the case of a 50-year-old woman who presented with painless swelling in her left lower leg that resembled deep vein thrombosis. She underwent femoral exploration and excision of the cystic wall. The presentation, investigation, treatment, and pathology of this condition are discussed with a literature review.

  16. Successful correction of unroofed coronary sinus with pulmonary vein stenosis.

    Science.gov (United States)

    Li, Yang; An, Qi; Zhang, Eryong

    2012-07-01

    We present a case of an infant with an unroofed coronary sinus associated with a persistent left superior vena cava draining into the left atrium, right superior pulmonary vein stenosis, an atretic left superior pulmonary vein and a double-outlet right ventricle. For pulmonary vein stenosis and atresia, we used a sutureless technique with an autologous pericardial patch to create a neoatrium.

  17. Macroinvertebrados bentónicos del humedal de Palo Verde, Costa Rica

    Directory of Open Access Journals (Sweden)

    F.A Trama

    2009-11-01

    Full Text Available El humedal de Palo Verde es uno de los más importantes de Centro America para aves acuáticas. Durante el período 2002 y 2005, se llevaron a cabo actividades de manejo para controlar la invasión de Typha domingensis. Con el fin de establecer una línea base para monitoreos futuros, en el 2003 se realizó una evaluación de macroinvertebrados acuáticos. Se efectuó un muestreo mensual durante un año, usando el método de sustratos artificiales. Se identificaron 116 táxones pertenecientes a 47 familias y a 18 órdenes. La mayor abundancia se encontró en la clase Conchostraca y la familia Chironomidae que juntas representaron casi la mitad de todos los individuos colectados. En contraste, el 97% de los táxones tuvieron, cada uno, menos del 1% del total de la abundancia. La diversidad de táxones, así como la abundancia de individuos y el número de especies, fueron mayores en la época seca que en la lluviosa. La curva acumulada de especies indicó que se hubiera registrado una mayor cantidad de táxones si los muestreos se hubieran extendido por más tiempo. Con este trabajo damos a conocer la primera lista de macroinvertebrados para el humedal de Palo Verde.

  18. 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.

  19. Influência de áreas verdes urbanas sobre a mirmecofauna

    Directory of Open Access Journals (Sweden)

    Milene Andrade Estrada

    Full Text Available O trabalho objetivou estudar a influência de características da arborização das áreas verdes urbanas sobre a mirmecofauna. A pesquisa foi conduzida no Município de Três Rios-RJ, em um parque urbano e em cinco praças públicas arborizadas. Foram obtidas a densidade de árvores, a densidade de espécies de árvores e a temperatura do ar. As formigas foram coletadas no solo e sobre o tronco de árvores, com iscas de sardinha. Foram coletadas 44 espécies de formigas, 26 espécies no solo e 37 espécies nas árvores. A densidade de espécies de árvores influenciou positivamente o número total de espécies de formigas e a diversidade de espécies coletadas nas árvores. Conclui-se que o aumento da densidade de espécies de árvores nas áreas verdes urbanas pode colaborar para a conservação da diversidade biológica.

  20. Numerical modelling of Alto Verde landslide using the material point method

    Directory of Open Access Journals (Sweden)

    Marcelo Alejandro Llano-Serna

    2015-01-01

    Full Text Available Finalizando el año 2008 en la ciudad de Medellín, Colombia, ocurrió un deslizamiento de tierra en la urbanización Alto Verde provocando la muerte de doce personas y la destrucción de seis viviendas. Los deslizamientos se destacan por el elevado nivel de deformaciones en una masa de suelo. El presente trabajo utilizó el método del punto material (MPM, método basado en partículas que utiliza una doble discretización Lagrangiano-Euleriana. La doble discretización genera un marco numérico robusto que permite la simulación de grandes distorsiones. El modelo numérico planteó una simplificación de las condiciones geotécnicas, morfológicas y estructurales de las edificaciones envueltas en Alto Verde. El estado de deformación final de la simulación se acomodó satisfactoriamente a las características geométricas finales observadas en campo. Los resultados obtenidos generan aplicaciones como el diseño de barreras, análisis de riesgo o la determinación de la distancia mínima de retiro a una ladera susceptible de deslizamiento.

  1. 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.

  2. 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.

  3. Arreglo de los polígonos del exocorion de huevos eclosionados de algunas especies de los géneros Triatoma Laporte, Meccus Stal y Nesotriatoma Usinger (Heteroptera: Reduviidae.

    Directory of Open Access Journals (Sweden)

    Glauco López

    2009-12-01

    Full Text Available Resumen. En este trabajo se estudiaron estructural y cuantitativamente las celdas exocoriales de huevos eclosionados de Triatoma infestans (Klug, Triatoma lenti Sherlock & Serafim, Triatoma maculata (Erichson, Triatoma sordida (Stal, Meccus picturatus (Usinger, Meccus longipennis (Usinger, Meccus pallidipennis (Stal and Nesotriatoma flavida (Neiva. Los huevos se analizaron por regiones: caudal, media y cefálica. Se encontró que el hexágono fue el polígono más abundante en todas las regiones del huevo y en todas las especies, seguido del pentágono y del heptágono; se encontraron diferencias estadísticamente significativas en el número tanto de hexágonos y pentágonos entre regiones de una misma especie y entre la misma región de las diferentes especies, sin embargo, el número promedio de heptágonos no varió al comparar la región media entre las diferentes especies y al comparar las diferentes regiones en una misma especie. No se encontraron diferencias estadísticamente significativas en el promedio de polígonos, segmentos totales, heptágonos, hexágonos y pentágonos, al comparar las especies examinadas del género Meccus. Se propone un protocolo de identificación y análisis de teselaciones, con el cual se encontró que en 108 campos examinados de 385.000 µm2 cada uno, se identificaron teselaciones compartidas en los 108 campos observados con determinadas combinaciones de heptágonos, hexágonos y pentágonos, y se observaron teselaciones no compartidas en la totalidad de los campos, con combinaciones de polígonos de cuatro a nueve lados, y cada teselación se representó por un grafo. Se discuten las implicaciones taxonómicas, funcionales, filogenéticas y construccionales de los arreglos poligonales descritos.Arragement of exochorial polygons of hatched eggs in several species of the genera Triatoma Laporte, Meccus Stal y Nesotriatoma Usinger (Heteroptera: Reduviidae. Abstract. In this study a structural and quantitative

  4. Estabilidad oxidativa de huevos enriquecidos con ácidos grasos poliinsaturados omega 3, frente a antioxidantes naturales Estabilidade oxidativa de ovos enriquecidos com ácidos graxos poliinsaturados ômega 3, frente a antioxidantes naturais

    Directory of Open Access Journals (Sweden)

    María Elena Bernal Gómez

    2003-12-01

    Full Text Available Fueron alimentadas 192 gallinas ponedoras de 22 semanas de edad, de linaje comercial Babcock, durante 30 días con dietas de 0 (cero y 12,7% de semilla de linaza molida que corresponde a 0 y 5% de aceite de linaza, respectivamente. Fueron definidos 8 tratamientos: 4 grupos con 12,7% de semilla de linaza (control/sin antioxidante; BHA+BHT, 100+100 ppm; orégano, 200 ppm; romero, 200 ppm y 4 grupos sin semilla de linaza, pero utilizando los mismos antioxidantes. Este estudio fue realizado con el objetivo de verificar la eficacia del uso de antioxidantes naturales provenientes del orégano y del romero en la protección contra el deterioro oxidativo de la fracción lipídica de las yemas de los huevos enriquecidos con ácidos grasos poliinsaturados omega 3 (PUFA É-3. El grado de oxidación lipídica fue determinado a través de la prueba TBARS (substancias reactivas con ácido tiobarbitúrico. Según los resultados obtenidos, fue verificada diferencia significativa en la reducción del grado de oxidación lipídica de las yemas de huevo en todos los tratamientos con antioxidantes, cuando se compara con el control. Por lo tanto, los extratos de los condimentos, romero y orégano, pueden ser utilizados satisfactoriamente para obtener huevos enriquecidos con PUFA É-3, mejorando la estabilidad lipídica.Foram alimentadas 192 galinhas poedeiras de 22 semanas de idade da linhagem comercial Babcock, durante 30 dias com dietas constituídas de 0 (zero e 12,7% de semente de linhaça moída correspondente a 0 e 5% de óleo de linhaça, respectivamente. Foram definidos 8 tratamentos: 4 grupos com 5% de óleo de linhaça (controle/sem antioxidante; BHA+BHT, 100+100 ppm; orégano, 200 ppm; alecrim, 200 ppm e 4 grupos sem óleo de linhaça, mas utilizando os mesmos antioxidantes. Este estudo foi realizado com o objetivo de verificar a eficácia do uso de antioxidantes naturais provenientes do orégano e do alecrim, na proteção contra a deteriora

  5. 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)

  6. Producción de Forraje Verde Hidropónico y su Aceptación en Ganado Lechero Producción de Forraje Verde Hidropónico y su Aceptación en Ganado Lechero

    National Research Council Canada - National Science Library

    Gabriel Córdova Duarte; Manuel Enrique Romero Valdez; Elizabeth Odalmira Hernández Gallardo

    2012-01-01

    ...: BookmanOldStyle;">El estudio precisó la técnica de producción de forraje verde hidropónico (FVH) y su aceptación en ganado lechero. La producción se realizó en un invernadero con capacidad para 1 440 charolas de 40 x 60 cm...

  7. Experience and results of modifications of systems power electric of Laguna Verde (Mexico); Experiencia y resultados de las modificaciones de los sistemas electricos de potencia de Laguna Verde (Mexico)

    Energy Technology Data Exchange (ETDEWEB)

    Gonzalez Solorzano, J. J.; Gabaldon Martin, M.

    2011-07-01

    This paper describes the main findings and improvements in the Laguna Verde Nuclear Power Plant (Mexico), following the changes made to the systems electrical power thereof, derivatives of the Project of Increased Power. This project has been an increased power to 120% of the 2 units Plant, which has necessitated the replacement of major electric systems of power in Plant.

  8. ¿Cabría un desmarketing a la concepción del marketing verde actual? Una crítica a la teoría y la práctica del marketing verde

    Directory of Open Access Journals (Sweden)

    Tatiana Tola Cisneros

    2014-06-01

    Full Text Available Este artículo examina el constructo del Marketing Verde o Green Marketing revisando literatura en torno a lo teorizado y practicado. El texto presenta en primer lugar una reflexión particular sobre los aportes e implicaciones más relevantes en relación al marketing verde y su posible necesidad de reenfocarse. Luego, una identificación general del consumidor verde y de su rol dentro del proceso de gestión ambiental. Finalmente, se ofrecen en este trabajo algunas consideraciones sobre la necesaria aplicación del correcto concepto de Green Marketing sostenible dentro de la sociedad. Esta revisión servirá a otros investigadores que necesiten conocer el estado de la investigación en torno al Green Marketing. Además, individuos y organizaciones podrán beneficiarse de las estrategias de marketing verde sostenible para desarrollar campañas de Marketing Socioambiental con miras a generar un verdadero cambio en la conducta ambiental, con una conciencia perpetua, inmutable y que se transmita como valor innegable de generación en generación.

  9. 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.

  10. Primary varicose veins: Frequency, clinical significance and surgical treatment

    Directory of Open Access Journals (Sweden)

    Vasić Dragan M.

    2004-01-01

    Full Text Available INTRODUCTION According to the definition of the World Health Organization, varicose veins represent abnormally enlarged superficial veins having baggy or cylindrical shape. The most frequent cause of primary varicose veins is the insufficiency of long saphenous vein (LSV, but especially the basin of its connection with femoral vein and perforating veins. OBJECTIVE The objectives of these investigations were: the determination of insufficiency incidence of SSV in cases of LSV insufficiency; the establishment of association of insufficiency of perforating veins of the basin of LSV and SSV; the study of the results of surgical treatment of insufficiency and varicosity of both short and long saphenous veins. METHODS In this study, 100 patients (66 women and 34 men, average age 52.1 years, with clinical symptoms showing the insufficiency and varicosity of long saphenous vein with no change of deep vein system were examined. Ultrasonographic examinations were made using Color Doppler probes - 7.5 and 3.75 MHz (Toshiba Corevison SSA 350 A; the development of incompetence of long saphenous vein (LSV and short saphenous vein (SSV at the level of the junction as well as other incompetent valves were examined. The reflux was defined as a retrograde flow of the duration longer than 0.5 seconds. RESULTS The insufficiency of short saphenous vein was determined by ultrasonographic examination in 34%, while the insufficiency of perforating veins in 80% of patients. 40% of patients were operated (33.3% of females, and 52.9% of males. The most frequent indications for surgical treatment of superficial veins insufficiency were: strong varicosities, clear symptoms and signs, superficial thrombophlebitis and conditions after superficial thrombophlebitis. Surgical treatment was applied in 16% of patients due to recurrence in the basin of long saphenous vein, and in 6% of cases because of the recurrence in the basin of short saphenous vein. Data analysis failed to

  11. [Pelvic vein thrombosis with elevated D-dimer level and normal ultrasound scan of the femoral vein].

    Science.gov (United States)

    Stenberg, Morten Roos; Tveskov, Claus

    2014-01-13

    A 17-year-old female presented with an isolated pelvic vein thrombosis (PVT) which was not visualised at the first compression ultrasound scan of the femoral vein. Isolated PVT should be suspected when the patient demonstrates the possible symptoms of a deep vein thrombosis with unilateral leg swelling extending to the groin and a negative compression ultrasound scan of the femoral vein. Supplemental ultrasound scan with Doppler flow, computed tomography or magnetic resonance venography are alternative diagnostic modalities if PVT is suspected.

  12. Influencia del pH y de la fuerza iónica sobre la gelificación térmica de proteínas de la yema de huevo

    Directory of Open Access Journals (Sweden)

    Partal, Pedro

    2007-09-01

    Full Text Available Thermal-induced transitions of egg yolk were studied by using Differential Scanning Calorimetry (DSC and temperature controlled Small Amplitude Oscillatory Shear (SAOS. The influence of composition (pH and electrolyte concentration and type was analyzed. The results obtained under DSC measurements suggest a continuous evolution in protein denaturation which depends on pH and salt content. Slope temperature measured by SAOS allowed the analysis of the evolution of the viscoelasticity functions during the gelification process. Viscoelasticity functions showed a dramatic increase and were affected by the pH, ionic strength and salt type. SAOS was also used to obtain the mechanical spectra of egg yolk dispersions and gels as a function of composition. The influence of pH and ionic strength on line ar viscoelastic properties and microstructure may be explained in terms of the model for the formation of gel networks of globular proteinsEn este trabajo se estudiaron las transiciones térmicas de la yema de huevo usando técnicas de calorimetría diferencial de barrido (DSC y ensayos viscoelásticos lineales, más concretamente, ensayos de cizalla oscilatoria de baja amplitud (SAOS. Se analizó la influencia de la composición (pH, concentración de electrolito y tipo. Los resultados obtenidos mediante calorimetría diferencial de barrido sugieren una continua evolución en el proceso de desnaturalización de la proteína, el cual depende de variables como el pH y la concentración de electrolito. Los ensayos calorimétricos se complementan con los reológicos. Así, la realización de rampas de temperatura usando medidas “in situ” de cizalla oscilatoria, permite determinar la evolución de las funciones viscoelásticas durante el proceso de gelificación, poniéndose de manifiesto un notable incremento de dichas funciones, que va a depender del pH, fuerza iónica y tipo de electrolito. Los ensayos de cizalla oscilatoria fueron igualmente

  13. Transmisión de Salmonella enterica a través de huevos de gallina y su importancia en salud pública Transmission of Salmonella enterica through chicken eggs and their importance in public health.

    Directory of Open Access Journals (Sweden)

    Diana Paola Rincón Acero

    2011-08-01

    Full Text Available La salmonelosis producida por especies de Salmonella sp. no tíficas, se manifiesta en humanos como una gastroenteritis o enterocolitis aguda de inicio repentino, cuyos síntomas aparecen de 6 a 48 horas después de la ingestión de alimentos o agua contaminada. Salmonella se transmite principalmente por el consumo de productos avícolas contaminados o por contaminación cruzada a través de manipuladores de alimentos o utensilios de cocina. La presente revisión se fundamenta en la interacción de Salmonella con el sistema reproductivo de la gallina y trata importantes aspectos como las formas de trasmisión al huevo, la epidemiología y prevención de este evento. Lo anterior con el fin de destacar la importancia de este patógeno en la generación de enfermedades trasmitidas por alimentos y el impacto que tiene el control de puntos críticos en la cadena de producción de los huevos y la vigilancia epidemiológica como mecanismos de control. Salud UIS 2011; 43 (2: 167-177Salmonellosis caused by non-typhoidal Salmonella species manifests in human like an acute gastroenteritis or enterocolitis that suddenly happens, whose symptoms occur between 6 to 48 hours after ingestion of contaminated food or water. Salmonella is mainly transmitted through consumption of contaminated poultry products, or crossed contamination by food handlers or kitchen utensils. This review is based on the interaction of Salmonella with the hen's reproductive system and presents important aspects such as the routes of transmission to the egg, epidemiology and prevention of this event. This in order to highlight the importance of this pathogen like source of foodborne diseases and the impact of the critical control points in the eggs production and epidemiological surveillance like control mechanisms. Salud UIS 2011; 43 (2: 167-177

  14. Treatment of recurrent varicose veins of the great saphenous vein by conventional surgery and endovenous laser ablation.

    NARCIS (Netherlands)

    Groenendael, L. van; Vliet, J.A. van der; Flinkenflogel, L.; Roovers, E.A.; Sterkenburg, S.M. van; Reijnen, M.M.P.J.

    2009-01-01

    OBJECTIVE: Varicose vein recurrence of the great saphenous vein (GSV) is a common, costly, and complex problem. The aim of the study was to assess feasibility of endovenous laser ablation (EVLA) in recurrent varicose veins of the GSV and to compare this technique with conventional surgical reinterve

  15. 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.

  16. 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.

  17. Implementación del proceso de canal verde en la aduana marítima de Guayaquil

    OpenAIRE

    2008-01-01

    propone un nuevo proceso para facilitar el comercio exterior y de manera en especial las actividades de importación; este proceso denominado Canal Verde o Aforo Automático está siendo aplicando en la mayoría de las aduanas del mundo logrando crear aduanas eficientes

  18. [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.

  19. Primary leiomyosarcoma of saphenous vein presenting as deep venous thrombosis.

    Science.gov (United States)

    Fremed, Daniel I; Faries, Peter L; Schanzer, Harry R; Marin, Michael L; Ting, Windsor

    2014-12-01

    Only a small number of venous leiomyosarcomas have been previously reported. Of these tumors, those of saphenous origin comprise a minority of cases. A 59-year-old man presented with symptoms of deep vein thrombosis and was eventually diagnosed with primary leiomyosarcoma of great saphenous vein origin. The tumor was treated with primary resection and femoral vein reconstruction with autologous patch. Although extremely rare, saphenous leiomyosarcoma can present as deep vein thrombosis. Vascular tumors should be included in the differential diagnosis of atypical extremity swelling refractory to conventional deep vein thrombosis management.

  20. Safety and efficacy of cryopreserved homologous veins for venous reconstruction in pancreatoduodenectomy.

    Science.gov (United States)

    Yamamoto, Masaki; Akamatsu, Nobuhisa; Aoki, Taku; Sakamoto, Yoshihiro; Tamura, Sumihito; Hasegawa, Kiyoshi; Kokudo, Norihiro

    2017-02-01

    There are several techniques for reconstructing the portal vein-superior mesenteric vein during pancreatoduodenectomy. The aim of the present study was to present our results with portal vein-superior mesenteric vein reconstruction using cryopreserved homologous veins during pancreatoduodenectomy for patients with pancreatic head cancer. Patients who underwent pancreatoduodenectomy for pancreatic head cancer were reviewed retrospectively. In patients with portal vein-superior mesenteric vein resection, the detailed method of reconstruction and clinical outcomes were reviewed. Clinical characteristics, patient survival, and portal vein-superior mesenteric vein patency were compared between those with and without homologous vein grafts. Factors affecting the patency of reconstructed veins were assessed by univariate analysis. Among 144 patients undergoing pancreatoduodenectomy, portal vein-superior mesenteric vein resection was performed in 36 patients (25%); 18 (50%) underwent reconstruction with homologous veins, and the other 18 (50%) underwent reconstruction without homologous veins. The extent of portal vein-superior mesenteric vein involvement, operative time, duration of clamping of portal vein-superior mesenteric vein, intraoperative blood loss, and length of the venous resection were greater (P ≤ .013 each) in those with homologous vein grafts. There was no significant difference in postoperative morbidity/mortality, patient survival, or portal vein-superior mesenteric vein patency. The 1- and 2-year overall patency of portal vein-superior mesenteric vein was 76% and 71%, respectively, while the 2-year patencies were 67% and 67% in those with homologous veins and 87% and 73% in those without homologous veins without difference between the groups. Circumferential resection and pathologic portal vein-superior mesenteric vein involvement were associated with the patency of the reconstructed vein (P = .002 and P = .028, resp). Use of homologous venous

  1. Internal vein texture and vein evolution of the epithermal Shila-Paula district, southern Peru

    Science.gov (United States)

    Chauvet, Alain; Bailly, Laurent; André, Anne-Sylvie; Monié, Patrick; Cassard, Daniel; Tajada, Fernando Llosa; Vargas, Juan Rosas; Tuduri, Johann

    2006-07-01

    The epithermal Shila-Paula Au-Ag district is characterized by numerous veins hosted in Tertiary volcanic rocks of the Western Cordillera (southern Peru). Field studies of the ore bodies reveal a systematic association of a main E-W vein with secondary N55-60°W veins—two directions that are also reflected by the orientation of fluid-inclusion planes in quartz crystals of the host rock. In areas where this pattern is not recognized, such as the Apacheta sector, vein emplacement seems to have been guided by regional N40°E and N40°W fractures. Two main vein-filling stages are identified. stage 1 is a quartz-adularia-pyrite-galena-sphalerite-chalcopyrite-electrum-Mn silicate-carbonate assemblage that fills the main E-W veins. stage 2, which contains most of the precious-metal mineralization, is divided into pre-bonanza and bonanza substages. The pre-bonanza substage consists of a quartz-adularia-carbonate assemblage that is observed within the secondary N45-60°W veins, in veinlets that cut the stage 1 assemblage, and in final open-space fillings. The two latter structures are finally filled by the bonanza substage characterized by a Fe-poor sphalerite-chalcopyrite-pyrite-galena-tennantite-tetrahedrite-polybasite-pearceite-electrum assemblage. The ore in the main veins is systematically brecciated, whereas the ore in the secondary veins and geodes is characteristic of open-space crystallization. Microthermometric measurements on sphalerite from both stages and on quartz and calcite from stage 2 indicate a salinity range of 0 to 15.5 wt% NaCl equivalent and homogenization temperatures bracketed between 200 and 330°C. Secondary CO2-, N2- and H2S-bearing fluid inclusions are also identified. The age of vein emplacement, based on 40Ar/39Ar ages obtained on adularia of different veins, is estimated at around 11 Ma, with some overlap between adularia of stage 1 (11.4±0.4 Ma) and of stage 2 (10.8±0.3 Ma). A three-phase tectonic model has been constructed to explain the

  2. DIAGNÓSTICO DAS ÁREAS VERDES PÚBLICAS DO BAIRRO POTENGI, NATAL/RN

    Directory of Open Access Journals (Sweden)

    Liana de Holanda Viana Barros

    2015-10-01

    Full Text Available Este estudo teve por objetivo diagnosticar as principais áreas verdes do bairro Potengi, localizado na Região Administrativa Norte de Natal-RN. A metodologia adotada consistiu, principalmente, de levantamentos bibliográfico e documental e, posteriormente, de pesquisa de campo, por meio da qual foi possível se visitar ruas, praças, canteiros e passeios públicos do bairro. A detecção das áreas verdes se deu inicialmente com o uso do google Earth. Os resultados apontaram que as áreas verdes do bairro Potengi estão em torno de 2,20 km² de extensão, correspondendo a uma taxa de 27,54% do território da região. As principais praças e canteiros visitados dispõem de árvores de pequeno a médio portes. Conclui-se que as áreas verdes públicas do bairro Potengi estão concentradas basicamente nas praças e canteiros centrais das principais ruas e avenidas. O percentual de arborização do bairro apresenta-se pouco significativo, requerendo com isso um maior envolvimento das populações locais e do poder público no sentido de se ampliar a arborização dos passeios públicos, visto que a presença de áreas verdes no espaço urbano é fator de extrema relevância para o bem-estar da população. Além disso, devido a importância das áreas verdes para a melhoria da qualidade de vida, o estudo constatou, ainda, a falta de investimento público no que tange a manutenção e revitalização das áreas verdes públicas.

  3. Ligation of superior mesenteric vein and portal to splenic vein anastomosis after superior mesenteric-portal vein confluence resection during pancreaticoduodenectomy – Case report

    Directory of Open Access Journals (Sweden)

    Jianlin Tang

    2014-12-01

    Conclusion: The lessons we learned are (1 Before SMPV confluence resection, internal jugular vein graft should be ready for reconstruction. (2 Synthetic graft is an alternative for internal jugular vein graft. (3 Direct portal vein to SMV anastomosis can be achieved by mobilizing liver. (4 It is possible that venous collaterals secondary to SMV tumor obstruction may have allowed this patient's post-operative survival.

  4. Augmented reality based real-time subcutaneous vein imaging system.

    Science.gov (United States)

    Ai, Danni; Yang, Jian; Fan, Jingfan; Zhao, Yitian; Song, Xianzheng; Shen, Jianbing; Shao, Ling; Wang, Yongtian

    2016-07-01

    A novel 3D reconstruction and fast imaging system for subcutaneous veins by augmented reality is presented. The study was performed to reduce the failure rate and time required in intravenous injection by providing augmented vein structures that back-project superimposed veins on the skin surface of the hand. Images of the subcutaneous vein are captured by two industrial cameras with extra reflective near-infrared lights. The veins are then segmented by a multiple-feature clustering method. Vein structures captured by the two cameras are matched and reconstructed based on the epipolar constraint and homographic property. The skin surface is reconstructed by active structured light with spatial encoding values and fusion displayed with the reconstructed vein. The vein and skin surface are both reconstructed in the 3D space. Results show that the structures can be precisely back-projected to the back of the hand for further augmented display and visualization. The overall system performance is evaluated in terms of vein segmentation, accuracy of vein matching, feature points distance error, duration times, accuracy of skin reconstruction, and augmented display. All experiments are validated with sets of real vein data. The imaging and augmented system produces good imaging and augmented reality results with high speed.

  5. Clinical Features of Primary Vein Grafts in Free Tissue Transfers

    Directory of Open Access Journals (Sweden)

    Mitsuru Nemoto

    2015-01-01

    Full Text Available The outcomes of free tissue transfers combined with vein grafts have been inconsistent, and discussions continue regarding their appropriate use. Of the 142 free tissue transfers that we performed from January 2004 to December 2011, we retrospectively analyzed 15 consecutive patients who underwent free tissue transfers in combination with vein grafts. Etiologies included trauma (8 patients, infection (4, and tumor (3. Types of free tissue transfers were fibula (4, anterolateral thigh (3, groin (3, jejunum (3, latissimus dorsi (1, and dorsal pedis (1. Vein grafts were used for the artery (6, vein (2, or both (7. The donor veins were the saphenous vein (12 and the external jugular vein (3. The mean length of the grafted veins was 10.8 cm (range: 4–18 cm. Even though complications of congestion occurred in 2 patients, these flaps survived by reexploration. The flap success rate was 15 of 15 (100% of vein grafted free flaps versus 124 of 127 (97.6% of free flaps not requiring vein grafts. To improve the success rate of free tissue transfers combined with vein grafts, securing healthy recipient vessels, meticulous surgical handling, a reliable vascular anastomosis technique, and strict postoperative monitoring are crucial.

  6. A pilot/introducer needle for central vein cannulation.

    Science.gov (United States)

    Suzuki, T; Kanazawa, M; Kinefuchi, Y; Fukuyama, H; Takiguchi, M; Yamamoto, M; Abe, K; Okuda, Y

    1995-12-01

    A kit for safe and easy insertion of a central vein cannula was devised. A small gauge (22 gauge) metal pilot needle was equipped with a Y-shaped hub which had a side-port to accept a small gauge (0.46 mm) Seldinger guide wire. Once the needle reached the vein, guidewire was threaded in through the side-port. There was no need to remove the pilot needle and no need to repeat vein puncture with a larger-bore needle. Three puncture methods were used with the kit: (1) the central approach via the internal jugular vein, (2) the supraclavicular approach via the junction of the internal jugular vein and subclavian vein, and (3) the infraclavicular approach via the subclavian vein. Each method was used on 20 patients, for total of 60 patients, with a high success rate. Less than 3 minutes were required from puncture to catheter insertion. No serious complications were encountered.

  7. Absent right superior caval vein in situs solitus

    DEFF Research Database (Denmark)

    Lytzen, Rebekka; Sundberg, Karin; Vejlstrup, Niels

    2015-01-01

    no postnatal complications. All children were found to have healthy hearts at follow-up. CONCLUSIONS: In all cases, the findings proved to be a benign condition with no clinical manifestations or complications. Although isolated absent right superior caval vein does not seem to affect the outcome, associated......Introduction In up to 0.07% of the general population, the right anterior cardinal vein obliterates and the left remains open, creating an absent right superior caval vein and a persistent left superior caval vein. Absent right superior caval vein is associated with additional congenital heart...... disease in about half the patients. We wished to study the consequences of absent right superior caval vein as an incidental finding on prenatal ultrasonic malformation screening. Material and methods This is a retrospective case series study of all foetuses diagnosed with absent right superior caval vein...

  8. [Treatment of renal vein thrombosis associated with nephrotic syndrome].

    Science.gov (United States)

    Funami, M; Takaba, T; Tanaka, H; Murakami, A; Kadokura, M; Hori, G; Ishii, J

    1988-06-01

    Renal vein thrombosis is a rare entity in which true incidence is unknown. The disease occurs most frequently in patients with nephrotic syndrome, but it also can occur in the presence of other hypercoagulable state. Two cases of renal vein thrombosis with nephrotic syndrome which were treated by thrombectomy are reported here. One patient was successfully treated by renal vein and inferior vena cava thrombectomy before developing severe pulmonary embolism. The other was treated by renal vein thrombectomy by which fatal shock was able to be prevented. In those cases, immediate operation was indicated, primarily to prevent additional, possibly fatal, pulmonary embolism and also to improve perfusion of the kidney. In the hope of salvaging the kidney, thrombectomy may be the treatment of choice for acute renal vein thrombosis, complication of pulmonary embolism and inferior vena cava thrombosis, right renal vein thrombosis without collateral flow and acute renal vein thrombosis with shock.

  9. The great brain versus vein debate.

    Science.gov (United States)

    Menon, Ravi S

    2012-08-15

    From the earliest fMRI experiments, it was quickly appreciated by those working with BOLD at high field that the signal change originated from visible veins whose spatial localization was relatively coarse ("the macrovasculature"), and smaller vessels ("the microvasculature") that were not individually visible in BOLD images. It was expected that a functional brain imaging technique that was predominantly sensitive to the macrovasculature would not have the same effective resolution as one sensitive to the microvasculature. Elimination of the venous signal and enhancement of the microvascular one offered the tantalizing ability to image columnar and lamellar structures in the brain and distinguished fMRI from its predecessor techniques. This article reviews a brief history of how these signal sources were first identified and separated and some of the controversy associated with the "brain versus vein" debate.

  10. Ovarian vein thrombosis in a polytrauma patient.

    Science.gov (United States)

    Toman, Emma; Beaven, Alastair; Balogun, Moji; Porter, Keith

    2015-12-18

    A young mother presented to a major trauma centre following a road traffic collision. Her admission CT traumagram demonstrated liver and renal lacerations, spinal and pelvic fractures with no abnormalities of the ovarian veins. Her inpatient course was uncomplicated other than a sustained, isolated raised C reactive protein. CT of the abdomen 1 week after injury demonstrated stable solid organ injuries and the additional, unexpected finding of a right ovarian vein thrombosis (OVT). A pragmatic approach was taken towards the management of the OVT given the haemorrhagic risk from her traumatic injuries. A multidisciplinary, consultant-led plan was made to slowly increase enoxaparin to a therapeutic dose under close surveillance and to then switch to warfarin following an outpatient consultation with a consultant haematologist. A MR venogram was performed after 3 months of anticoagulation, and this demonstrated complete resolution of the OVT and normal appearances of the ovary.

  11. Pulmonary vein stenosis: Etiology, diagnosis and management

    Institute of Scientific and Technical Information of China (English)

    Pablo Pazos-López; Cristina García-Rodríguez; Alba Guitián-González; Emilio Paredes-Galán; María ángel; De La Guarda álvarez-Moure; Marta Rodríguez-álvarez; José Antonio Baz-Alonso; Elvis Teijeira-Fernández; Francisco Eugenio Calvo-Iglesias; Andrés í?iguez-Romo

    2016-01-01

    Pulmonary vein stenosis(PVS) is rare condition characterized by a challenging diagnosis and unfavorable prognosis at advance stages. At present, injury from radiofrequency ablation for atrial fibrillation has become the main cause of the disease. PVS is characterized by a progressive lumen size reduction of one or more pulmonary veins that, when hemodynamically significant, may raise lobar capillary pressure leading to signs and symptoms such as shortness of breath, cough, and hemoptysis. Image techniques(transesophageal echocardiography, computed tomography, magnetic resonance and perfusion imaging) are essential to reach a final diagnosis and decide an appropriate therapy. In this regard, series from referral centers have shown that surgical and transcatheter interventions may improve prognosis. The purpose of this article is to review the etiology, assessment and management of PVS.

  12. Doppler spectral characteristics of infrainguinal vein bypasses

    DEFF Research Database (Denmark)

    Nielsen, Tina G; von Jessen, F; Sillesen, H

    1993-01-01

    With the aim of assessing the velocity profile of femoropopliteal and femorocrural vein bypasses, 128 patients undergoing infrainguinal vein bypass surgery entered a postoperative Duplex surveillance protocol, which included clinical assessment and Duplex scanning, using Doppler spectral analysis...... of arteriovenous fistulas the initially antegrade diastolic velocity was replaced by a retrograde flow within 3 months, whereas a forward flow in diastole was sustained in grafts with patent fistulas. Abnormal Duplex findings in 31 patients led to angiography and revision in 13 cases. Four revised grafts failed......, while nine remained patent at follow-up 1-12 months later. Ten (56%) of 18 non-revised bypasses with abnormal Duplex findings failed within 9 months compared to 1 (1%) of 76 bypasses with a normal velocity profile (p analysis provides...

  13. 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

  14. Resiliencia ambiental: el uso de la infraestructura verde en la cuenca de Itacorubi, municipio de Florianópolis, Brasil

    Directory of Open Access Journals (Sweden)

    Bárbara Heliodora Alves D´Acampora

    2015-12-01

    Full Text Available Resumen El presente artículo tiene como objetivo presentar una metodología para la implementación de la infraestructura verde de escala regional y urbana para la resiliencia ambiental de la cuenca de Itacorubi, que está sufriendo graves impactos ambientales. Serán investigados los conceptos sobre la infraestructura verde y resiliencia ambiental, y la caracterización ambiental de la cuenca. A partir del análisis de DAFO será posible hacer un diagnóstico territorial para medir, según los aspectos de debilidades, amenazas, fortalezas y oportunidades, el grado de sostenibilidad del paisaje y del manglar de la cuenca. Será verificado que la implementación de una infraestructura verde, a través de conexiones verdes multifuncionales, en la escala regional y urbana, es una solución viable y de gran rendimiento para tornar la cuenca de Itacorubi resiliente. Palabras clave Infraestructura verde, resiliencia ambiental, impactos ambientales, análisis de DAFO, manglar Abstract This article aims to present a methodology for the implementation of green infrastructure for regional and urban environmental resilience for the basin of Itacorubi; which is suffering serious environmental damages. It will be investigated concepts of green infrastructure and environmental resilience, and environmental characterization of the basin. From the SWOT analysis will be possible to make a territorial diagnosis to measure; according to aspects of weaknesses, threats, strengths, and opportunities; the sustainability of the landscape and mangrove basin. It will be verified that the implementation of green infrastructure; through multifunctional green connections in the regional and urban scale; is a viable and has good performance to turn the basin Itacorubi resilient. Keywords Green infrastructure, environmental resilience, environmental impacts, SWOT analysis, mangrove

  15. 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)

  16. Optimization of the fuel use in the nuclear power plant of Laguna Verde; Optimizacion del uso de combustible en la Central Nuclear de Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Ortiz S, J. J.; Castillo M, J. A.; Perusquia del Cueto, R., E-mail: juanjose.ortiz@inin.gob.m [ININ, Departamento de Sistemas Nucleares, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

    2010-07-01

    The fuel management in a nuclear power reactor for the electricity production has a main objective the efficient use of the nuclear fuel during the reactor operation, without to neglect the related with the security and to achieve the economic profitability in turn. The efficient use of the fuel implies to extract the maximum electric power of the uranium that the reactor security is guaranteed and provide economic benefits for the owner company of the nuclear reactor. In Mexico, the Federal Commission of Electricity have two boiling water reactors in the nuclear power plant of Laguna Verde (Veracruz, Mexico). In this nuclear power plant the operation of a nuclear reactor is carried out by means of operation cycles that have 18 months of duration at the moment. At the end of each cycle, the reactor stops to carry out the fuel recharge phase. The fuel assemblies can be removed or relocated in each cycle. Approximately a fourth part of the fuel assemblies are replaced by fresh fuels. This means that each fuel assemble remains, on the average, 4 cycles in the reactor or the order of six years. Therefore, the fuel management has for object to design the configuration of fuel load and form of reactor operation, so that the safety aspects are satisfied and that the expectations of electric generation are reached for each operation cycle of the useful life of the reactor. (Author)

  17. 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)

  18. 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)

  19. Lazer, esporte e turismo: importância e uso das áreas verdes urbanas em Belém/Brasil

    OpenAIRE

    Figueiredo, Silvio Lima; Bahia, Mirleide Chaar; Cabral, Patrícia Thatyane Miranda; Nóbrega, Wilker Ricardo de Medonça; Tavares, Auda Edileusa Piani

    2013-01-01

    O artigo apresenta as análises da pesquisa realizada em parques e áreas verdes urbanos de uma cidade da Amazônia Brasileira, Belém. A pesquisa teve como objetivo explicitar as representações sobre as áreas verdes da cidade pelos seus usuários, em práticas de esporte e lazer, realizadas por residentes e turistas. Foram entrevistados usuários das áreas verdes, em entrevistas diretivas, porém abertas, e também observações em campo. Foram debatidos os conceitos de esporte-lazer, de...

  20. Massive hydrothorax following subclavian vein catheterization

    OpenAIRE

    Omar, Hesham R.; fathy, Ahmad; Elghonemy, Mohamed; Rashad, Rania; Helal, Engy; Mangar, Devanand; Camporesi, Enrico

    2010-01-01

    Since the introduction of central venous catheterization for monitoring of the venous pressure, fluid infusion and hyperalimentation, the literature has been full of serious life-threatening complications. Of these complications is the false positioning of the central venous catheter and subsequent development of pleural effusion. In this report we are describing a case of iatrogenic massive pleural effusion following subclavian vein catheterization necessitating intercostal tube drainage and...

  1. Surficial Geologic Map of Mesa Verde National Park, Montezuma County, Colorado

    Science.gov (United States)

    Carrara, Paul E.

    2012-01-01

    Mesa Verde National Park in southwestern Colorado was established in 1906 to preserve and protect the artifacts and dwelling sites, including the famous cliff dwellings, of the Ancestral Puebloan people who lived in the area from about A.D. 550 to A.D. 1300. In 1978, the United Nations designated the park as a World Heritage Site. The geology of the park played a key role in the lives of these ancient people. For example, the numerous (approximately 600) cliff dwellings are closely associated with the Cliff House Sandstone of Late Cretaceous age, which weathers to form deep alcoves. In addition, the ancient people farmed the thick, red loess (wind-blown dust) deposits on the mesa tops, which because of its particle size distribution has good moisture retention properties. The soil in this loess cover and the seasonal rains allowed these people to grow their crops (corn, beans, and squash) on the broad mesa tops. Today, geology is still an important concern in the Mesa Verde area because the landscape is susceptible to various forms of mass movement (landslides, debris flows, rockfalls), swelling soils, and flash floods that affect the park's archeological sites and its infrastructure (roads, septic systems, utilities, and building sites). The map, which encompasses an area of about 100 mi2 (260 km2), includes all of Mesa Verde National Park, a small part of the Ute Mountain Indian Reservation that borders the park on its southern and western sides, and some Bureau of Land Management and privately owned land to the north and east. Surficial deposits depicted on the map include: artificial fills, alluvium of small ephemeral streams, alluvium deposited by the Mancos River, residual gravel on high mesas, a combination of alluvial and colluvial deposits, fan deposits, colluvial deposits derived from the Menefee Formation, colluvial deposits derived from the Mancos Shale, rockfall deposits, debris flow deposits, earthflow deposits, translational and rotational landslide

  2. Cohesive Sediment Erodibility and Evolution of a Mud Deposit on the Palos Verdes Shelf

    Science.gov (United States)

    Sherwood, C. R.; Ferre, B.; Murray, C. J.; Sanford, L. P.; Warner, J. C.; Wiberg, P. L.

    2006-12-01

    We have added a cohesive-sediment erodibility algorithm to ROMS, a three-dimensional numerical model for circulation and sediment transport. The new code implements an algorithm developed by Sanford ("Modeling a dynamically varying mixed sediment bed with erosion, deposition, bioturbation, consolidation, and armoring", Computers and Geosciences, in review.) The algorithm assumes that cohesive sediment has a critical stress for erosion that varies (typically increasing) with depth in the sediment, determined by various physical and biological properties or processes. Erosion and deposition alter this profile, but it is reestablished over a characteristic time scale which is longer than typical resuspension events (a few days) but probably less than a year. The critical stress profile limits the amount of sediment that can be eroded during to the mass available at the maximum stress applied during the event. Because the critical stress profile varies with time, the response to events depends on the history of sediment disturbance and recovery. The shapes of the critical stress profiles can vary both horizontally and vertically. In this pilot application, the shapes of the profiles were determined from geostatistical modeling of field data collected on a mud deposit on the Palos Verdes Shelf off Los Angeles. The data include about 30 traditional grain-size measurements, 10 erosion-chamber experiments, and 160 measurements of the penetration depths of a sediment-profiling camera. The penetration depths were highly correlated (r=0.84) with the slope of the erodibility profiles determined by the erosion chamber. Maps of erodibility (i.e., slope and offset of the critical stress profiles) on the Palos Verdes Shelf were made with Gaussian simulation and collocated cokriging of the erosion-chamber data conditioned on the camera-penetration data. These and maps of bottom grain-size distribution were used to initialize the bed sediment in ROMS. Model runs were made for the

  3. Central Vein Preservation in Critical Venous Access.

    Science.gov (United States)

    Davidson, J; Paul, A; Patel, S; Davenport, M; Ade-Ajayi, N

    2016-08-01

    Introduction The lack of suitable veins in children with critical central venous access requirements is a major obstacle to optimal care and is potentially life-threatening. We present outcomes following the use of vein-preserving (VP) surgical techniques, notably the sheath exchange for tunneled lines (SETL). Materials and Methods A retrospective, single observer analysis of a prospectively maintained departmental logbook as well as the medical records of patients. Two broad groups of central line replacements were identified; those inserted following removal of a previous line and a traditional "plastic-free" (PF) period and those exchanged without such an interval. Results Overall, 19 lines were directly exchanged during the study period and compared with 34 inserted after a PF period. Similar catheter life spans and infection rates were demonstrated in each group; 125 (range, 78-173) days in VP exchanges versus 122 (range, 70-175) days in PF replacements (p = 0.41). Line Sepsis resulting in removal or change of line occurred at 103 (range, 60-147) days in VP group versus 104 (range, 45-164) days in PF (p = 0.73). Conclusion For children with critical venous access requirements, direct line exchange procedures are a robust and reproducible means of vein preservation. The outcomes compare favorably with those following the more traditional removal, a PF period and reinsertion.

  4. Portal vein thrombosis related to Cassia angustifolia.

    Science.gov (United States)

    Soyuncu, Secgin; Cete, Yildiray; Nokay, Ali E

    2008-09-01

    Cassia angustifolia (Senna), used as a laxative, is a plant from the Fabaceae family. It includes hydroxyanthracene glycosides, also known as Senna Sennoside. These glycosides stimulate the peristalsis of the colon and alter colonic absorption and secretion resulting in fluid accumulation and expulsion. In the literature, there are reports illustrating the hepatotoxic effects of Cassia angustifolia but there is no report of portal vein thrombosis caused by Cassia Angustifolia. A 42-year-old woman was admitted to the emergency department with a five-day history of worsening epigastric pain, anorexia, episodic vomiting, and intermittent fever. She reported that she had boiled dried senna leaves she had bought from herbalists and drank approximately 200 mL daily for two years. Color Doppler screening found an echogen thrombus obliterating portal vein bifurcation and the right branch. The lumen was obstructed at this level and there was no blood flow through it. Treatment with thrombolytics was unsuccessful. Severe hepatotoxicity senna use is unusual. The cause of senna-related hepatotoxicity is unclear but could be explained by the exposure of the liver to unusual amounts of toxic metabolites of anthraquinone glycosides. Chronic use of Cassia angustifolia may rarely be associated with portal vein thrombosis.

  5. Laser photocoagulation for retinal vein occlusion

    Directory of Open Access Journals (Sweden)

    K. A. Mirzabekova

    2015-03-01

    Full Text Available Retinal vein occlusion (RVO is one of the leading causes of permanent vision loss. In adults, central retinal vein occlusion (CRVO occurs in 1.8% while branch retinal vein occlusion (BRVO occurs in 0.2%. Treatment strategy and disease prognosis are determined by RVO type (ischemic/non-ischemic. Despite numerous studies and many current CRVO and BRVO treatment approaches, the management of these patients is still being debated. Intravitreal injections of steroids (triamcinolone acetate, dexamethasone and vascular endothelial growth factor (VEGF inhibitors (bevacizumab, ranibizumab were shown to be fairly effective. However, it is unclear whether anti-VEGF agents are reasonable in ischemic RVOs. Laser photocoagulation remains the only effective treatment of optic nerve head and/or retinal neovascularization. Laser photocoagulation is also indicated for the treatment of macular edema. Both threshold and sub-threshold photocoagulation may be performed. Photocoagulation performed with argon (514 nm, krypton (647 nm, or diode (810 nm laser for macular edema provides similar results (no significant differences. The treatment may be complex and include medication therapy and/or surgery. Medication therapy includes anti-aggregant agents and antioxidants, i.e., emoxypine which may be used in acute RVO as well as in post-thrombotic retinopathy. 

  6. Comparison between mechanical properties of human saphenous vein and umbilical vein

    Directory of Open Access Journals (Sweden)

    Hamedani Borhan

    2012-08-01

    Full Text Available Abstract Background As a main cause of mortality in developed countries, Coronary Artery Disease (CAD is known as silent killer with a considerable cost to be dedicated for its treatment. Coronary Artery Bypass Graft (CABG is a common remedy for CAD for which different blood vessels are used as a detour. There is a lack of knowledge about mechanical properties of human blood vessels used for CABG, and while these properties have a great impact on long-term patency of a CABG. Thus, studying these properties, especially those of human umbilical veins which have not been considered yet, looks utterly necessary. Methods Umbilical vein, as well as human Saphenous vein, are respectively obtained after cesarean and CABG. First, histological tests were performed to investigate different fiber contents of the samples. Having prepared samples carefully, force-displacement results of samples were rendered to real stress–strain measurements and then a fourth-order polynomial was used to prove the non-linear behavior of these two vessels. Results Results were analyzed in two directions, i.e. circumferentially and longitudinally, which then were compared with each other. The comparison between stiffness and elasticity of these veins showed that Saphenous vein’s stiffness is much higher than that of umbilical vein and also, it is less stretchable. Furthermore, for both vessels, longitudinal stiffness was higher than that of circumferential and in stark contrast, stretch ratio in circumferential direction came much higher than longitudinal orientation. Conclusion Blood pressure is very high in the region of aorta, so there should be a stiff blood vessel in this area and previous investigations showed that stiffer vessels would have a better influence on the flow of bypass. To this end, the current study has made an attempt to compare these two blood vessels’ stiffness, finding that Saphenous vein is stiffer than umbilical vein which is somehow as stiff as

  7. Estudio comparativo de tres variantes del ensayo de la membrana corioalantoidea del huevo de la gallina para la evaluación de la irritación ocular

    Directory of Open Access Journals (Sweden)

    G. Murillo

    2003-01-01

    Full Text Available Durante los últimos años se han desarrollado variasalternativas con el objetivo de reemplazar la prueba de irritaciónocular en el conejo. El objetivo de este trabajo fue comparar lautilidad de tres protocolos diferentes de la prueba de la mem-brana corioalantoidea del huevo de gallina, descrita en una basede datos establecida de técnicas de Toxicología in vitro, eva-luando la irritación potencial de diez sustancias químicas y for-mulaciones. Se compararon los datos con aquellos obtenidos enla prueba animal tradicional. Se halló una buena correlación conlos datos del test in vivopara dos de los protocolos usados, enque tres sustancias fueron clasificadas como no irritantes y sietecomo irritantes en alguna magnitud. Sin embargo, se encontra-ron seis falsos negativos con la tercera prueba usada. Se discu-ten posibles causas para estos resultados. De las tres técnicasestudiadas la mejor es la que se basa en la utilización de azul detripano ya que se trata de una técnica más rápida, de más fácilrealización y con un resultado más fiable al evaluar los dañosocasionados en la membrana corioalantoidea de una forma obje-tiva y cuantificable

  8. Non-cuffed dual lumen catheters in the external jugular veins versus other central veins for hemodialysis patients.

    Science.gov (United States)

    Moini, Majid; Rasouli, Mohammad R; Kenari, Mohammad Mahmoodzadeh; Mahmoodi, Hamid Reza

    2009-01-01

    To compare prospective between insertion of non-cuffed dual lumen catheter in the external jugular vein and other central veins for hemodialysis (HD), we studied 68 chronic dialysis patients randomly allocated into two groups: one with external jugular vein catheterization as access for HD and another with other central venous catheterization, internal jugular or subclavian vein. Our results showed there were no significant differences regarding successful cannulation, com-plications, total numbers of dialysis, development of pain and infection at the site of cannulation, patency rate of the catheters, and efficacy of hemodialysis between both groups. In addition, the patency of the catheter in the external jugular vein was not affected by previous cannulation of other central veins. In contrast, there was a significant correlation between numbers of attempts for cannulation in both groups and development of hematoma and infection, (pvein may be an alternative for other central veins for insertion of temporary non-cuffed hemodialysis catheter.

  9. 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.

  10. Steam generator chemical cleaning at the Palo Verde Nuclear Generating Station

    Energy Technology Data Exchange (ETDEWEB)

    Jevec, J.M. [Babcock and Wilcox, Alliance, OH (United States). R and D Division; Knollmeyer, P.M. [B and W Nuclear Technologies, Lynchburg, VA (United States); Paramithas, P. [Palo Verde Nuclear Generating Station, Tonopah, AZ (United States)

    1995-09-01

    The secondary side of the Palo Verde Units 2 and 3 steam generators were chemically cleaned in 1994. The primary purpose of the chemical cleaning was to remove deposits bridging between adjacent tubes and also to remove bulk tube and tubesheet deposits. A secondary objective was to remove deposits from the flow distribution plate-to-tube crevice. The chemical cleaning consisted of a magnetite dissolution step, a separate step aimed at removing deposits in the flow distribution plate crevices, and a final step to remove residual copper and passivate the carbon steel surfaces of the steam generator. Corrosion monitoring was employed during the cleaning to ensure that the cleaning resulted in corrosion to steam generator materials of construction that was below the predetermined chemical cleaning corrosion allowances. The process application, removal efficiency, and corrosion results are presented in this paper.

  11. Atividade extensionista e TI Verde conectando instituição e comunidade

    Directory of Open Access Journals (Sweden)

    Mozart Lemos de Siqueira

    2013-11-01

    Full Text Available 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 instituição de ensino superior. Além disso, mostra o benefício para a comunidade.

  12. Sustentabilidade e Inovação: Um Estudo Sobre o Plástico Verde

    OpenAIRE

    Zambanini, Marcos Eduardo; Universidade Municipal de São Caetano do Sul - USCS; Bresciani, Luis Paulo; Universidade Municipal de São Caetano do Sul - USCS; Pereira, Raquel da Silva; Universidade Municipal de São Caetano do Sul - USCS; Souza, Dércia Antunes de; Universidade Municipal de São Caetano do Sul - USCS; Ortega, Gustavo; Universidade Municipal de São Caetano do Sul - USCS

    2013-01-01

    O presente trabalho tem por objetivo verificar a perspectiva de possível substituição do plástico oriundo dos combustíveis fósseis não renováveis e esgotáveis pelo Plástico Verde, fabricado a partir do etanol de cana-de-açúcar, recurso renovável. O estudo consiste em uma pesquisa exploratória com abordagem qualitativa, realizada mediante análise de artigos técnicos, informações disponíveis no site da empresa Braskem e entrevistas com atores empresariais envolvidos com o tema. Como um dos resu...

  13. Application of Time-Domain Electromagnetic Method in Investigating Saltwater Intrusion of Santiago Island (Cape Verde)

    Science.gov (United States)

    Gonçalves, Rui; Farzamian, Mohammad; Monteiro Santos, Fernando A.; Represas, Patrícia; Mota Gomes, A.; Lobo de Pina, A. F.; Almeida, Eugénio P.

    2017-08-01

    Santiago Island, the biggest and most populated island of the Cape Verde Republic, is characterised by limited surface waters and strong dependence on groundwater sources as the primary source of natural water supply for extensive agricultural activity and human use. However, as a consequence of the scarce precipitation and high evaporation as well as the intense overexploitation of the groundwater resources, the freshwater management is also in a delicate balance with saltwater at coastal areas. The time-domain electromagnetic (TDEM) method is used to locate the extent of saltwater intrusion in four important agricultural regions in Santiago Island; São Domingos, Santa Cruz, São Miguel, and Tarrafal. The application of this method in Santiago Island proves it to be a successful tool in imaging the fresh/saltwater interface location. Depths to the saline zones and extensions of saline water are mapped along eight TDEM profiles.

  14. The Vida Verde Women's Co-Op: Brazilian immigrants organizing to promote environmental and social justice.

    Science.gov (United States)

    Gute, David M; Siqueira, Eduardo; Goldberg, Julia S; Galvão, Heloisa; Chianelli, Mônica; Pirie, Alex

    2009-11-01

    We reviewed the key steps in the launch of the Vida Verde Women's Co-Op among Brazilian immigrant housecleaners in Somerville, MA. The co-op provides green housecleaning products, encourages healthy work practices, and promotes a sense of community among its members. We conducted in-depth interviews with 8 of the first co-op members, who reported a reduction in symptoms associated with the use of traditional cleaning agents and a new sense of mutual support. Critical to the co-op's success have been the supportive roles of its academic partners (Tufts University and the University of Massachusetts, Lowell), effective media outreach, and a focus on advancing social justice. Next steps include implementing a formal business plan and assessing the appropriateness of cooperatives in other industries.

  15. Competitividade de destinos turísticos: o caso das ilhas de Cabo Verde

    Directory of Open Access Journals (Sweden)

    Milene Monteiro

    2015-01-01

    Full Text Available The main goal of this research focuses on studying the performance and competitiveness of tourism destinations of the Cape Verde islands by main outbond markets. It was used the data of monthly overnight stays in hotels for the period 2005 to 2011. For that it was used the instrument Analysis of Market Share proposed by Faulkner (1997, as well as the Gini Index and the Dissimilarity among tourist destinations in major outbound markets, to better complement the study analysis. The results showed that the islands have changed in the tourism competitiveness, presented levels of tourism competitiveness different for the various origins. Concerning the Gini Index, nationally there was a decrease in concentration of overnights. As the dissimilarity, the island of Boavista was the most singular region and São Nicolau and Brava were the most similar.

  16. DOS COSECHAS ANUALES DE GRANOS Y FORRAJE VERDE CON SORGOS GRANIFEROS EN CORRIENTES

    Directory of Open Access Journals (Sweden)

    Héctor Mario Cenoz

    2010-11-01

    Full Text Available En este trabajo los autores presentan los resultados de la investigación comparativa de variedades de granos de sorgo, incluyendo una variedad doble propósito, para determinar su adaptación a las condiciones ecológicas de la zona y su rendimiento en grano y forraje fresco en dos cosechas anuales. Los resultados muestran la clara superioridad de la variedad de doble propósito sobre las variedades de grano en grano y forraje verde en la producción anual (dos cosechas, pero la variedad Doble Enano tiene superioridad sobre las variedades de grano en el rendimiento (dos cosechas anuales. Cabe notar que las variedades híbridas del grano de sorgo no han superado a las no-híbridas.

  17. 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.

  18. La química verde como plataforma para el desarrollo de materiales y procesos sustentables

    OpenAIRE

    SÁNCHEZ CERVANTES, EDUARDO M.

    2012-01-01

    La química verde provee los fundamentas básicos para evitar la contaminación innecesaria y el uso eficiente de la energía. En el presente trabajo se han utilizado líquidos iónicos (solventes de bajo impacto ecológico) para la síntesis, con base en ultrasonido de baja energía, de nanobarras de Sb2S3 que tienen una potencial aplicación en celdas solares. Asimismo, se ha logrado un estudio fisicoquímico completo de nuevos líquidos iónicos basados en fosfonios que se han u...

  19. 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

  20. Una revolución verde en la educación: las estrategias de aprendizaje

    Directory of Open Access Journals (Sweden)

    Clifton Chadwick

    1991-06-01

    Full Text Available Una "revolución verde", es propuesta para el área de la Educación, a través del desarrollo y uso de estrategias de aprendizaje. Aprender a aprender es promovido a través de estrategias cognitivas que llevan al auto-aprendizaje, estrategias afectivas detonan el uso de estrategias cognitivas de procesamiento y ejecución. Se enfatiza la meta-cognición como parte de las estrategias de aprendizaje, las cuales deben integrarse en el aula y el currículum, cambiando metodología y contenido. Esto reduciría la deserción y repetición escolar y capacitaría al estudiante para funcionar mejor en la vida.

  1. 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: >6...... of 207 volcanic rocks representing all volcanic activity stages is presented. The rocks are alkaline and mostly primitive (MgO >8 wt.%) basic to ultrabasic ranging from nephelinites through basanites to picrobasalts. Evolved rocks range to phonolites. During all four volcanic stages predominantly high Mg...... assumed. With more ages of only around 50 ka the youngest volcanic rocks found on the island indicate that stage 4 may still be active. The cyclieity of São Nico volcanism suggests that mantle plume material arrived under São Nicolau in batches separated by nonfertile material....

  2. 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.

  3. 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.

  4. 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.

  5. 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 (mortalityaegypti population from Santiago is resistant to two major insecticides 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

  6. Thermal limits validation of gamma thermometer power adaption in CFE Laguna Verde 2 reactor core

    Energy Technology Data Exchange (ETDEWEB)

    Cuevas V, G.; Banfield, J. [GE-Hitachi Nuclear Energy Americas LLC, Global Nuclear Fuel, Americas LLC, 3901 Castle Hayne Road, Wilmingtonm, North Carolina (United States); Avila N, A., E-mail: Gabriel.Cuevas-Vivas@ge.com [Comision Federal de Electricidad, Central Nucleoelectrica Laguna Verde, Carretera Cardel-Nautla Km 42.5, Alto Lucero, Veracruz (Mexico)

    2016-09-15

    This paper presents the status of GEH work on Gamma Thermometer (GT) validation using the signals of the instruments installed in the Laguna Verde Unit 2 reactor core. The long-standing technical collaboration between Comision Federal de Electricidad (CFE), Global Nuclear Fuel - Americas LLC (GNF) and GE-Hitachi Nuclear Energy Americas LLC (GEH) is moving forward with solid steps to a final implementation of GTs in a nuclear reactor core. Each GT is integrated into a slightly modified Local Power Range Monitor (LPRM) assembly. Six instrumentation strings are equipped with two gamma field detectors for a total of twenty-four bundles whose calculated powers are adapted to the instrumentation readings in addition to their use as calibration instruments for LPRMs. Since November 2007, the six GT instrumentation strings have been operable with almost no degradation by the strong neutron and gamma fluxes in the Laguna Verde Unit 2 reactor core. In this paper, the thermal limits, Critical Power Ratio (CPR) and maximum Linear Heat Generation Rate (LHGR), of bundles directly monitored by either Traverse In-core Probes (TIPs) or GTs are used to establish validation results that confirm the viability of TIP system replacement with automatic fixed in-core probes (AFIPs, GTs, in a Boiling Water Reactor. The new GNF steady-state reactor core simulator AETNA02 is used to obtain power and exposure distribution. Using this code with an updated methodology for GT power adaption, a reduced value of the GT interpolation uncertainty is obtained that is fed into the LHGR calculation. This new method achieves margin recovery for the adapted thermal limits for use in the Economic Simplified Boiling Water Reactor (ESBWR) or any other BWR in the future that employs a GT based AFIP system for local power measurements. (Author)

  7. 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.

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

    Science.gov (United States)

    Müller, C.; Iinuma, Y.; Karstensen, J.; van Pinxteren, D.; Lehmann, S.; Gnauk, T.; Herrmann, H.

    2009-12-01

    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.

  9. Quantification of deep medullary veins at 7 T brain MRI

    Energy Technology Data Exchange (ETDEWEB)

    Kuijf, Hugo J.; Viergever, Max A.; Vincken, Koen L. [University Medical Center Utrecht, Image Sciences Institute, Utrecht (Netherlands); Bouvy, Willem H.; Razoux Schultz, Tom B.; Biessels, Geert Jan [University Medical Center Utrecht, Department of Neurology, Brain Center Rudolf Magnus, Utrecht (Netherlands); Zwanenburg, Jaco J.M. [University Medical Center Utrecht, Image Sciences Institute, Utrecht (Netherlands); University Medical Center Utrecht, Department of Radiology, Utrecht (Netherlands)

    2016-10-15

    Deep medullary veins support the venous drainage of the brain and may display abnormalities in the context of different cerebrovascular diseases. We present and evaluate a method to automatically detect and quantify deep medullary veins at 7 T. Five participants were scanned twice, to assess the robustness and reproducibility of manual and automated vein detection. Additionally, the method was evaluated on 24 participants to demonstrate its application. Deep medullary veins were assessed within an automatically created region-of-interest around the lateral ventricles, defined such that all veins must intersect it. A combination of vesselness, tubular tracking, and hysteresis thresholding located individual veins, which were quantified by counting and computing (3-D) density maps. Visual assessment was time-consuming (2 h/scan), with an intra-/inter-observer agreement on absolute vein count of ICC = 0.76 and 0.60, respectively. The automated vein detection showed excellent inter-scan reproducibility before (ICC = 0.79) and after (ICC = 0.88) visually censoring false positives. It had a positive predictive value of 71.6 %. Imaging at 7 T allows visualization and quantification of deep medullary veins. The presented method offers fast and reliable automated assessment of deep medullary veins. (orig.)

  10. Abdominal thromboses of splanchnic, renal and ovarian veins.

    Science.gov (United States)

    De Stefano, Valerio; Martinelli, Ida

    2012-09-01

    Thromboses of abdominal veins outside the iliac-caval axis are rare but clinically relevant. Early deaths after splanchnic vein thrombosis occur in 5-30% of cases. Sequelae can be liver failure or bowel infarction after splanchnic vein thrombosis, renal insufficiency after renal vein thrombosis, ovarian infarction after ovarian vein thrombosis. Local cancer or infections are rare in Budd-Chiari syndrome, and common for other sites. Inherited thrombophilia is detected in 30-50% of patients. Myeloproliferative neoplasms are the main cause of splanchnic vein thrombosis: 20-50% of patients have an overt myeloproliferative neoplasm and/or carry the molecular marker JAK2 V617F. Renal vein thrombosis is closely related to nephrotic syndrome; finally, ovarian vein thrombosis can complicate puerperium. Heparin is used for acute treatment, sometimes in conjunction with systemic or local thrombolysis. Vitamin K-antagonists are recommended for 3-6 months, and long-term in patients with Budd-Chiari syndrome, unprovoked splanchnic vein thrombosis, or renal vein thrombosis with a permanent prothrombotic state such as nephrotic syndrome.

  11. Automated detection of periventricular veins on 7 T brain MRI

    Science.gov (United States)

    Kuijf, Hugo J.; Bouvy, Willem H.; Zwanenburg, Jaco J. M.; Viergever, Max A.; Biessels, Geert Jan; Vincken, Koen L.

    2015-03-01

    Cerebral small vessel disease is common in elderly persons and a leading cause of cognitive decline, dementia, and acute stroke. With the introduction of ultra-high field strength 7.0T MRI, it is possible to visualize small vessels in the brain. In this work, a proof-of-principle study is conducted to assess the feasibility of automatically detecting periventricular veins. Periventricular veins are organized in a fan-pattern and drain venous blood from the brain towards the caudate vein of Schlesinger, which is situated along the lateral ventricles. Just outside this vein, a region-of- interest (ROI) through which all periventricular veins must cross is defined. Within this ROI, a combination of the vesselness filter, tubular tracking, and hysteresis thresholding is applied to locate periventricular veins. All detected locations were evaluated by an expert human observer. The results showed a positive predictive value of 88% and a sensitivity of 95% for detecting periventricular veins. The proposed method shows good results in detecting periventricular veins in the brain on 7.0T MR images. Compared to previous works, that only use a 1D or 2D ROI and limited image processing, our work presents a more comprehensive definition of the ROI, advanced image processing techniques to detect periventricular veins, and a quantitative analysis of the performance. The results of this proof-of-principle study are promising and will be used to assess periventricular veins on 7.0T brain MRI.

  12. Development of HIFU Therapy System for Lower Extremity Varicose Veins

    Science.gov (United States)

    Ota, Ryuhei; Suzuki, Jun; Yoshinaka, Kiyoshi; Deguchi, Juno; Takagi, Shu; Miyata, Tetsuro; Matsumoto, Yoichiro

    2009-04-01

    High-intensity focused ultrasound (HIFU) treatment utilizing microbubbles was investigated in the present study. It is known that microbubbles have the potential to enhance the heating effects of an ultrasound field. In this study, the heat accompanying microbubble oscillation was used to occlude varicose veins. Alteration of veins was observed after ultrasound irradiation. Veins were resected by stripping. In this study, two vein conditions were adopted during HIFU irradiation; non-compressed and compressed. Compressing the vein was expected to improve occlusion by rubbing the altered intima under compressed conditions. The frequency of the ultrasound was 1.7 MHz, the intensity at the focus was 2800 W/cm2, and the irradiation time was 20 s. In this study, the contrast agent Levovist® was chosen as a microbubble source, and the void fraction (ratio of total gas volume to liquid) in the vein was fixed at 10-5. Under non-compressed conditions, changes were observed only at the adventitia of the vein anterior wall. In contrast, under compressed conditions, changes were observed from the intima to the adventitia of both the anterior and posterior walls, and they were partly stuck together. In addition, more experiments with hematoxylin-eosin staining suggested that the changes in the vein were more substantial under the latter conditions. From these results, it was confirmed that the vein was occluded more easily with vein compression.

  13. Computed tomographic evaluation of the portal vein in the hepatomas

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Kee Hyung; Lee, Seung Chul; Bae, Man Gil; Seo, Heung Suk; Kim, Soon Yong; Lee, Min Ho; Kee, Choon Suhk; Park, Kyung Nam [Hanyang University College of Medicine, Seoul (Korea, Republic of)

    1986-10-15

    Computed tomography and pornographic findings of 63 patients with hepatoma, undergone hepatic angiography and superior mesenteric pornography for evaluation of tumor and thrombosis of portal vein and determination of indication of transcatheter arterial embolization for palliative treatment of hepatoma from April, 85 to June, 86 in Hanyang university hospital, were reviewed. The results were as follows: 1. In 36 cases, portal vein thrombosis was detected during photography. Nineteen of 37 cases which revealed localized hepatoma in the right lobe of the liver showed portal vein thrombosis; 9 of 11 cases of the left lobe; 8 of 14 cases which were involved in entire liver revealed thrombosis. One case localized in the caudate lobe showed no evidence of invasion to portal vein. 2. Twenty-four of 34 cases with diffuse infiltrative hepatoma revealed portal vein thrombosis and the incidence of portal vein thrombosis in this type were higher than in the cases of the nodular type. 3. The portal vein thrombosis appeared as filling defects of low density in the lumen of the portal veins in CT and they did not reveal contrast enhancement. 4. CT revealed well the evidence of obstructions in the cases of portal vein thrombosis and the findings were well-corresponded to the findings of the superior mesenteric photography. 5. Five of the cases of the portal vein thrombosis were missed in the CT and the causes were considered as due to partial volume effect of enhanced portal vein with partial occlusion or arterioportal shunts. 6. Six of 13 cases with occlusion of main portal vein showed cavernous transformation and they were noted as multiple small enhanced vascularities around the porta hepatis in the CT. According to the results, we conclude that CT is a useful modality to detect the changes of the portal veins in the patients of the hepatoma.

  14. Portal vein and mesenteric vein gas: CT features; Aeroportie ety aeromesenterie: donnees TDM

    Energy Technology Data Exchange (ETDEWEB)

    Schmutz, G.; Fournier, L.; Le Pennec, V.; Provost, N.; Hue, S.; Phi, I.N. [Centre Hospitalier Universitaire, 14 - Caen (France)

    2001-04-01

    Portal vein and mesenteric vein gas are unusual conditions with a complex and nuclear pathogenesis. Mesenteric ischemia frequently causes such pathological conditions but a variety of other causes are known: inflammatory bowel disease, bowel distension, traumatic and iatrogenic injury, intra-abdominal sepsis, and idiopathic conditions. This pathologic entity is favored by intestinal wall alterations, bowel distension and sepsis. The prognosis is frequently fatal, especially when associated with extended bowel necrosis although in the majority of the cases, outcome is favorable without surgery. (author)

  15. Endovascular Laser Therapy for Varicose Veins

    Science.gov (United States)

    2010-01-01

    Executive Summary Objective The objective of the MAS evidence review was to conduct a systematic review of the available evidence on the safety, effectiveness, durability and cost–effectiveness of endovascular laser therapy (ELT) for the treatment of primary symptomatic varicose veins (VV). Background The Ontario Health Technology Advisory Committee (OHTAC) met on November 27, 2009 to review the safety, effectiveness, durability and cost-effectiveness of ELT for the treatment of primary VV based on an evidence-based review by the Medical Advisory Secretariat (MAS). Clinical Condition VV are tortuous, twisted, or elongated veins. This can be due to existing (inherited) valve dysfunction or decreased vein elasticity (primary venous reflux) or valve damage from prior thrombotic events (secondary venous reflux). The end result is pooling of blood in the veins, increased venous pressure and subsequent vein enlargement. As a result of high venous pressure, branch vessels balloon out leading to varicosities (varicose veins). Symptoms typically affect the lower extremities and include (but are not limited to): aching, swelling, throbbing, night cramps, restless legs, leg fatigue, itching and burning. Left untreated, venous reflux tends to be progressive, often leading to chronic venous insufficiency (CVI). A number of complications are associated with untreated venous reflux: including superficial thrombophlebitis as well as variceal rupture and haemorrhage. CVI often results in chronic skin changes referred to as stasis dermatitis. Stasis dermatitis is comprised of a spectrum of cutaneous abnormalities including edema, hyperpigmentation, eczema, lipodermatosclerosis and stasis ulceration. Ulceration represents the disease end point for severe CVI. CVI is associated with a reduced quality of life particularly in relation to pain, physical function and mobility. In severe cases, VV with ulcers, QOL has been rated to be as bad or worse as other chronic diseases such as

  16. INFLUÊNCIA DOS STAKEHOLDERS NA ADOÇÃO DE ESTRATÉGIAS DE MARKETING VERDE

    Directory of Open Access Journals (Sweden)

    Benny Kramer Costa

    2012-01-01

    Full Text Available Este artigo tem como objetivo conhecer de que forma os stakeholders influenciam na adoção de estratégias de marketing verde sob a ótica da empresa Alfa, uma indústria moveleira situada no Rio Grande do Norte, Brasil. A metodologia utilizada teve uma abordagem qualitativa e utiliza o método do estudo de caso exploratóriodescritivo como modelo formal e sistemático do estudo científico. Segue as proposições teórico-conceituais de Polonsky (1995, Michell, Angle e Wood (1997 e Frooman (1999 como referências básicas que identifica e avalia o grau de importância dos stakeholders relevantes, mostra suas expectativas e necessidades e descreve as táticas utilizadas pelas empresas para a implantação de estratégias de marketing verde. O estudo descreve a realidade de uma indústria moveleira do Rio Grande do Norte, Brasil e mostra sua filosofia e contexto; identifica os stakeholders presentes, analisa o grau de importância de cada grupo relevante e mostra suas necessidades e expectativas e por fim, constata as mudanças ocorridas na organização na implantação de estratégias de marketing verde. A partir dos resultados obtidos conclui que os stakeholders são levados em consideração na adoção de estratégias de marketing verde, mesmo a empresa não possuindo a devida percepção estratégica necessária para avançar na adoção da filosofia do marketing verde. Este estudo de caso explora conhecimentos que podem ser apropriados e adequados por empresas de pequeno porte que atuem nesse segmento-tendência estratégico do marketing verde.

  17. Reproducibility of dorsal hand vein responses to phenylephrine and prostaglandin F2 alpha using the dorsal hand vein compliance method.

    Science.gov (United States)

    Schindler, C; Grossmann, M; Dobrev, D; Francke, K; Ravens, U; Kirch, W

    2003-03-01

    Assessment of drug-induced venodilation by the dorsal hand vein compliance method requires stable constriction of the vein. This study was designed to investigate intra- and intersubject reproducibility of the venous preconstriction technique in response to phenylephrine and prostaglandin F2 alpha and to determine the influence of basal vein size. Twelve healthy male nonsmokers participated in a prospective cross-over study. Inter- and intrasubject variability was tested in response to phenylephrine and PGF2 alpha on different study days in the same hand vein. The dose of the respective constrictor causing approximately 80% constriction of the vein (ED80) was determined and infused for another 100 minutes. Actual vein size was measured every 5 minutes. Coefficient of variation and regression analyses were performed to analyze influence of vessel size on ED80 of the respective constrictor. Adjusted constriction levels were stable and well reproducible in all subjects. The intersubject coefficient of variation of ED80 ranged from 0.9% to 6.7% for phenylephrine and from 0.9% to 6.9% for PGF2 alpha. Whereas responses to phenylephrine were independent of basal vein diameter, there was a positive correlation between ED80 of PGF2 alpha and basal vein size. Thus, the hand vein compliance method is a suitable method to study dilatory responses in phenylephrine- or PGF2 alpha-constricted veins with considerable interindividual but small intraindividual variability. However, in such studies, phenylephrine appears to be a more reliable tool than PGF2 alpha.

  18. 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)

  19. 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)

  20. Electrical systems at the nuclear power plant of Laguna Verde after the event in Fukushima; Sistemas electricos en la central nucleoelectrica Laguna Verde despues del evento de Fukushima

    Energy Technology Data Exchange (ETDEWEB)

    Lopez J, J. F., E-mail: jflopez@cnsns.gob.mx [Comision Nacional de Seguridad Nuclear y Salvaguardias, Dr. Jose M. Barragan 779, Col. Narvarte, 03020 Ciudad de Mexico (Mexico)

    2016-09-15

    During the event at the nuclear power plant of Fukushima Daichii (Japan), the electrical systems were affected both Onsite and Offsite, which were lost for a long time with irreversible consequences. Therefore, the Mexican Regulatory Body known as the Comision Nacional de Seguridad Nuclear y Salvaguardias (CNSNS) has taken various actions to review the current capacity of the electrical systems at the nuclear power plant of Laguna Verde (NPP-LV) before an event beyond the design bases. The CNSNS made special inspections to the NPP-LV to verify the current capacity of the electrical systems of Ac and Dc; as a result of the inspections, requirements were generated that must be met to demonstrate that has the capacity to deal with events beyond the design bases. In addition, CNSNS has participated in the Ibero-American Forum to deal with resistance testing. Is important to note that prior to the event at the nuclear power plant of Fukushima, the NPP-LV had implemented 1) the project Extended Power Increase in both Units of the NPP-LV, and 2) the Generic Charter 2006-02, both issues are considered contributions in the robustness of electrical systems. But it is also important to mention that the US Nuclear Regulatory Commission will soon issue mitigation strategies for a Station Blackout event, which could involve new actions at nuclear power plants. Based on the aforementioned, the CNSNS concludes that all the actions being taken contribute to the strengthening of the NPP-LV electrical systems, in order to increase their reliability, safety and operation when these are required to deal with events beyond the design bases as the event occurred in Fukushima Daichii and avoid as far as possible, damage in the reactor cores of the NPP-LV. (Author)

  1. 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)

  2. Internal Jugular Vein Entrapment in a Multiple Sclerosis Patient

    Directory of Open Access Journals (Sweden)

    Marian Simka

    2012-01-01

    Full Text Available We describe a multiple sclerosis patient presenting with compression of the internal jugular vein caused by aberrant omohyoid muscle. Previously this patient underwent balloon angioplasty of the same internal jugular vein. Ten months after this endovascular procedure, Doppler sonography revealed totally collapsed middle part of the treated vein with no outflow detected. Still, the vein widened and the flow was restored when the patient’s mouth opened. Thus, the abnormality was likely to be caused by muscular compression. Surgical exploration confirmed that an atypical omohyoid muscle was squeezing the vein. Consequently, pathological muscle was transected. Sonographic control three weeks after surgical procedure revealed a decompressed vein with fully restored venous outflow. Although such a muscular compression can be successfully managed surgically, future research has to establish its clinical relevance.

  3. 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)

  4. 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)

  5. 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)

  6. Priorização de práticas verdes em GSCM: estudo de casos com empresas da indústria do pêssego

    Directory of Open Access Journals (Sweden)

    Miguel Afonso Sellitto

    Full Text Available Resumo O objetivo deste artigo é definir prioridades para as práticas verdes que são observadas em cadeias de suprimentos da indústria do pêssego. O método de pesquisa é a modelagem qualiquantitativa. As unidades de análise são quatro empresas focais da cadeia de suprimentos da indústria do pêssego da região de Pelotas. Foi elaborado um modelo para estruturar práticas verdes observadas na indústria, a partir da literatura sobre GSCM (Gestão Verde da Cadeia de Suprimento. O modelo inclui três construtos: Estratégia, Inovação e Operações. Dezesseis práticas verdes presentes na literatura foram distribuídas entre os construtos. Um grupo focado de três especialistas adaptou o modelo à indústria do pêssego de Pelotas, eliminando três práticas. As restantes foram priorizadas por gestores das empresas com apoio do método AHP de análise multicriterial. Com base no resultado, cinco práticas foram consideradas prioritárias para a indústria: Ecodesign, Cooperação, Avaliação de Desempenho, Compras Verdes e Manufatura Verde, nesta ordem.

  7. Splenic vein leiomyosarcoma: case report and review of the literature.

    Science.gov (United States)

    Patrono, Damiano; Molinaro, Luca; Mazza, Elena; Romagnoli, Renato; Salizzoni, Mauro

    2014-09-28

    Primary venous leiomyosarcoma (LMS) is a rare disease, most commonly affecting the retroperitoneal veins and in particular the inferior vena cava. Five-year survival rate ranges between 33% and 68%. Complete surgical resection represents the only potentially curative treatment, occasionally achieving long-term survival. LMS of the splenic vein is extremely rare, with only three cases reported in the literature. We report a case of primary venous LMS arising from the splenic vein and we briefly review the relevant literature.

  8. Pediatric aneurysms and vein of Galen malformations

    Science.gov (United States)

    Rao, V. R. K.; Mathuriya, S. N.

    2011-01-01

    Pediatric aneurysms are different from adult aneurysms – they are more rare, are giant and in the posterior circulation more frequently than in adults and may be associated with congenital disorders. Infectious and traumatic aneursyms are also seen more frequently. Vein of Galen malformations are even rarer entities. They may be of choroidal or mural type. Based on the degree of AV shunting they may present with failure to thrive, with hydrocephalus or in severe cases with heart failure. The only possible treatment is by endovascular techniques – both transarterial and transvenous routes are employed. Rarely transtorcular approach is needed. These cases should be managed by an experienced neurointerventionist. PMID:22069420

  9. Electro-oculogram of Retinal Vein Occlusion

    Institute of Scientific and Technical Information of China (English)

    1994-01-01

    Twenty five cases, including 26 eyes with retinal vein occlusion (RVO) were examined by means of the electro-oculogram. The results showed that 23 of the 26 eyes suffering from RVO exhibited abnormalities of the electro-oculogram (EOG). The potential difference and Arden ratio in the RVO eyes were lower than those in the normal eyes (P<0.01). The more the visual acuity of ill eyes was decreased, the higher the abnormal rate of EOG in ill eyes was. 14 eyes had the visual acuity less than 0.1, whose EOGs ...

  10. Central Retinal Vein Occlusion Revealing Coelic Disease

    Directory of Open Access Journals (Sweden)

    Hana ZOUBEIDI

    2016-11-01

    Full Text Available Introduction: Thrombosis has been widely reported in coeliac disease (CD but central retinal vein occlusion (CRVO is rarely described. Case presentation: A 27-year-old woman presented with acute visual loss and was diagnosed with CRVO. Her protein S and protein C levels were low and CD was diagnosed on the basis of endoscopic, immunological and histological results. A gluten-free diet resulted in favourable evolution. Conclusion: CD should be considered in young patients with thrombosis, especially if in an unusual location. Treatment is based on a gluten-free diet.

  11. 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 ...

  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

    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. Image Quality Enhancement Using the Direction and Thickness of Vein Lines for Finger-Vein Recognition

    Directory of Open Access Journals (Sweden)

    Young Ho Park

    2012-10-01

    Experimental results from application of our proposed image enhancement method show that the equal error rate (EER of finger‐vein recognition decreases to approximately 0.4% in the case of a local binary pattern‐ based recognition and to approximately 0.3% in the case of a wavelet transform‐based recognition.

  15. An anomaly in persistent right umbilical vein of portal vein diagnosed by ultrasonography

    Institute of Scientific and Technical Information of China (English)

    Shigeo Nakanishi; Katsuya Shiraki; Kouji Yamamoto; Mutsumi Koyama; Takeshi Nakano

    2005-01-01

    AIM: To detect the anomaly in the persistent right umbilical vein (PRUV) of portal vein (PV) with deviation of the ligamentum tere and left-sided gallbladder.METHODS: A total of 5783 candidates for routine analysis were evaluated for hepatic vascular abnormalities by ultrasonography.RESULTS: Ten candidates (0.17%) had a portal vein anomaly with a rightward-deviated ligamentum tere.The blood-flow velocity in the PRUV of the portal vein (17.7±3.0 cm/s) of the 10 cases was similar to that of the right anterior portal trunk (17.6±4.1 cm/s). However,the vessel diameter of the PRUV (ψ12.4±4.4 mm) was larger than the right anterior portal trunk (ψ6.1±0.9 mm).Therefore, flow volume in the anomalous portion (0.97±0.30 L/min) was more than that in the right anterior portal trunk (0.18±0.05 L/min).CONCLUSION: The anomaly plays an important role in intra-hepatic PV flow.

  16. Evaluation of different systems for clinical quantification of varicose veins.

    Science.gov (United States)

    Cornu-Thénard, A; De Vincenzi, I; Maraval, M

    1991-04-01

    One hundred twenty-five lower limbs with varicose veins were studied clinically, essentially by palpation. Two specialists in venous pathology scored the severity of the varicose veins from 0 to 20. Comparison between the different clinical parameters and the scores of the specialists showed that two systems of clinical quantification gave good results and were easy to use. One system is the maximum diameter of the largest varicose vein; the other system is the sum of maximum diameters over 7 sections (3 for thigh, 3 for leg, 1 for foot). This latter system gives a more precise evaluation of the clinical severity of the varicose veins.

  17. Advantages of using volar vein repair in finger replantations.

    Science.gov (United States)

    Mersa, Berkan; Kabakas, Fatih; Pürisa, Hüsrev; Özçelik, Ismail Bülent; Yeşiloğlu, Nebil; Sezer, Ilker; Tunçer, Serdar

    2014-01-01

    Providing adequate venous outflow is essential in finger replantation surgeries. For a successful result, the quality and quantity of venous repairs should be adequate to drain arterial inflow. The digital dorsal venous plexus is a reliable source of material for venous repairs. Classically, volar digital veins have been used only when no other alternative was available. However, repairing volar veins to augment venous outflow has a number of technical advantages and gives a greater chance of survival. Increasing the repaired vein:artery ratio also increases the success of replantation. The volar skin, covering the volar vein, is less likely to be avulsed during injury and is also less likely to turn necrotic, than dorsal skin, after the replantation surgery. Primary repair of dorsal veins can be difficult due to tightness ensuing from arthrodesis of the underlying joint in flexion. In multiple finger replantations, repairing the volar veins after arterial repair and continuing to do so for each finger in the same way without changing the position of the hand and surgeon save time. In amputations with tissue loss, the size discrepancy is less for volar veins than for dorsal veins. We present the results of 366 finger replantations after volar vein repairs.

  18. [Portal perfusion with right gastroepiploic vein flow in liver transplant].

    Science.gov (United States)

    Mendoza-Sánchez, Federico; Javier-Haro, Francisco; Mendoza-Medina, Diego Federico; González-Ojeda, Alejandro; Cortés-Lares, José Antonio; Fuentes-Orozco, Clotilde

    Liver transplantation in patients with liver cirrhosis, portal vein thrombosis, and cavernous transformation of the portal vein, is a complex procedure with high possibility of liver graft dysfunction. It is performed in 2-19% of all liver transplants, and has a significantly high mortality rate in the post-operative period. Other procedures to maintain portal perfusion have been described, however there are no reports of liver graft perfusion using right gastroepiploic vein. A 20 year-old female diagnosed with cryptogenic cirrhosis, with a Child-Pugh score of 7 points (class "B"), and MELD score of 14 points, with thrombosis and cavernous transformation of the portal vein, severe portal hypertension, splenomegaly, a history of upper gastrointestinal bleeding due to oesophageal varices, and left renal agenesis. The preoperative evaluation for liver transplantation was completed, and the right gastroepiploic vein of 1-cm diameter was observed draining to the infrahepatic inferior vena cava and right suprarenal vein. An orthotopic liver transplantation was performed from a non-living donor (deceased on January 30, 2005) using the Piggy-Back technique. Portal vein perfusion was maintained using the right gastroepiploic vein, and the outcome was satisfactory. The patient was discharged 13 days after surgery. Liver transplantation was performed satisfactorily, obtaining an acceptable outcome. In this case, the portal perfusion had adequate blood flow through the right gastroepiploic vein. Copyright © 2015 Academia Mexicana de Cirugía A.C. Publicado por Masson Doyma México S.A. All rights reserved.

  19. Radiation Retinopathy Associated with Central Retinal Vein Occlusion

    Institute of Scientific and Technical Information of China (English)

    Yan; Liu; FengWen

    2007-01-01

    Purpose: To report a case of radiation retinopathy associated with central retinal vein occlusion.Methods: The clinical features and fundus fluorescein angiography of this case were analyzed.Results: The patient had been treated with radiotherapy for her nasopharyngeal carcinoma, and presented with sudden visual loss in the left eye. The funduscopic examination and fluorescein angiography showed the features of radiation retinopathy in both eyes, and central retinal vein occlusion in the left eye.Conclusions: Radiation retinopathy can be associated with central retinal vein occlusion in the same eye, and it seems that the endothelial cell loss caused by radiation retinopathy may lead to retinal vein occlusion.

  20. Potencialidades da CEDEAO para um pequeno país insular em desenvolvimento : o caso de Cabo Verde

    OpenAIRE

    Marta, Edna Maria Monteiro

    2013-01-01

    Mestrado em Desenvolvimento e Cooperação Internacional A presente dissertação pretende demonstrar que a integração de Cabo- Verde na CEDEAO permite-lhe por um lado, ter acesso às potencialidades económicas que o espaço oferece e, por outro, consolidar a sua posição geopolítica e geoestratégica, quer perante os países da região, quer perante a Comunidade Internacional. A região da África Ocidental no seu conjunto possui alguns factores potenciais de desenvolvimento que faltam a Cabo Verde, ...