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Sample records for calamar gigante dosidicus

  1. Relaciones ontogénicas y espacio-temporales en la dieta del calamar gigante (Dosidicus gigas) en Perú, utilizando un Modelo Aditivo Generalizado

    OpenAIRE

    Alegre Norza Sior, Ana Renza Paola

    2011-01-01

    El calamar gigante Dosidicus gigas (d'Orbigny, 1835) es un depredador importante en el ecosistema del Perú. Se postula que el papel del calamar gigante varía teniendo en cuenta la talla, tiempo, hora, temperatura y distribución espacial. Para comprobar esta hipótesis se aplicó un modelo aditivo generalizado (GAM) en datos biológicos de alimentación de 4178 calamares gigantes capturados por la flota industrial pesquera a lo largo del litoral peruano (3ºS a 18ºS) desde 2 a 299 millas náuticas (...

  2. Crecimiento y reclutamiento del calamar gigante Dosidicus gigas en el Perú (1991 a 1994).

    OpenAIRE

    Argüelles, Juan

    1996-01-01

    Presenta las características biológicas y poblacionales del calamar gigante a fin de establecer las medidas adecuadas de explotación. Se aprecia que el calamar presenta una alta tasa de crecimiento pudiendo alcanzar tallas de 41 a 53 cm. al año de edad y se revela la presencia de dos pulsos anuales de reclutamiento, los que involucran varios meses durante primavera-verano y otoño-invierno.

  3. Distribución de Tallas y Condición Reproductiva del Calamar Gigante Dosidicus Gigas (D'Orbigny, 1835) en el Golfo de California

    OpenAIRE

    Velázquez Abunader, J.I.; Nevárez Martínez, M.O.; Hernández Herrera, Agustin

    2010-01-01

    Se analizaron cambios en la distribución de tallas, número de cohortes y condición reproductiva del calamar gigante Dosidicus gigas utilizando muestras provenientes de siete cruceros oceanográficos de investigación, efectuados en la región central del Golfo de California, México de 1997 a 2008. En todas las estaciones se muestrearon hasta 25 ejemplares registrando longitud del manto, sexo y fase de madurez gonádica y cuando la captura lo permitió, se realizó un muestreo masivo de 100 ejemplar...

  4. Rentabilidad de Unidades Representativas de Producción Pesquera del calamar gigante Dosidicus gigas en el Golfo de California

    OpenAIRE

    Víctor Hernández-Trejo; Mauricio Ramírez-Rodríguez; Germán Ponce-Díaz; Luis Almendarez-Hernández

    2014-01-01

    La pesca del calamar gigante en México se desarrolla principalmente en el Golfo de California, en las costas de Baja California Sur (B.C.S) y Sonora (Son.), por cooperativas y empresas privadas que operan embarcaciones menores (pangas) y barcos camaroneros. Las diferencias en la rentabilidad de empresas tipo se evaluaron con los datos de ingresos y costos totales de operación en el año 2008, consensuados por representantes de empresas calamareras que definieron dos tipos de unidades represent...

  5. Validación histológica de los estadios de madurez gonádica de las hembras de calamar gigante (Dosidicus gigas) en el Golfo de California, México

    OpenAIRE

    JG Díaz-Uribe; A Hernández-Herrera; E Morales-Bojórquez; S Martínez-Aguilar; MC Suárez-Higuera; A Hernández-López

    2006-01-01

    Se analizó la estructura de ovocitos en las gónadas de hembras de calamar gigante (Dosidicus gigas), para validar los estadios morfocromáticos de madurez sexual, basados en una escala de seis etapas. Las muestras fueron obtenidas quincenalmente en el área de Santa Rosalía, Baja California Sur, entre junio del 2001 y noviembre del 2002. De cada gónada se obtuvieron cortes histológicos para contar el número de ovocitos en cada nivel de desarrollo. Con la frecuencia de ovocitos en cada nivel de ...

  6. Estudio preliminar del sistema reproductor del Calamar Gigante del Golfo de Baja California Dosidicus gigas (D'Orbigny, 1935) Mollusca: Cephalopoda

    OpenAIRE

    Ochoa Báez, Rosa Isabel

    1980-01-01

    El calamar gigante del Golfo California es un recurso potencial de gran importancia para México. Como base para estudiar el ciclo de madurez gonadal, se describe el sistema reproductor de ejemplares colectados durante 1980. En las hembras existe un ovario, un par de glándulas nidamentales y un par de glándulas nidamentales accesorias; en su histología presenta ovocitos de diversos estadios de maduración con células foliculares en cordones. La maduración avanzada coincide con la presencia de p...

  7. Composición de tallas de la captura de calamar gigante en el Golfo de California durante 1981

    OpenAIRE

    Ramírez Rodríguez, Mauricio; Klett Traulsen, Alexander

    1985-01-01

    La Pesquería de Calamar Gigante (Dosidicus gigas) en el Golfo de California tuvo un notable desarrollo durante los años de 1978 a 1980, pasando de una producción de 2,000 t en el primero a 22,400 t en el último. Ese marcado incremento estuvo íntimamente asociado con la aplicación de un mayor esfuerzo de pesca. En 1981 las capturas sufrieron un decrecimiento muy significativo, causando la crísis de la pesquería y desde 1982 el recurso dejó de presentarse en el área, terminando de esta manera s...

  8. Efecto de la calidad del agua y tamaño de partícula en la producción de quitosano a partir de B-quitina extraída de desperdicios de calamar gigante (Dosidicus gigas)

    OpenAIRE

    Z. Rocha-Pino; Shirai, K.; L. Arias; H. Vázquez-Torres

    2008-01-01

    La pluma de calamar gigante es una fuente importante de B-quitina, la cual tiene un arreglo de cadenas en forma paralela que le da un carácter particular en sus propiedades tales como, alta reactividad, afinidad en disolventes orgánicos y retención de agua. La extracción de la B-quitina se realizó con el método químico, el cual consistió en desmineralización (DM) probando HCl 0.2M ó 1M, posteriormente se realizó la desproteinización (DP) con NaOH en concentraciones de 0.2M a 2M. La DP total, ...

  9. La modificación del ecosistema marino reflejada en las poblaciones de las especies de calamares Dosidicus gigas, Illex coindetii, Illex argentinus, Todarodes sagittatus, Doryteuthis gahi y Onykia ingens Dinámica y función de los calamares en los ecosistemas Marine ecosystem change in the squid populations of Dosidicus gigas, Illex coindetii, Illex argentinus, Todarodes sagittatus, Doryteuthis gahi and Onykia ingens Dynamic and function of squid species in the ecosystems

    OpenAIRE

    Rosas Luis, Rigoberto

    2013-01-01

    [spa] En esta tesis se revisaron las relaciones que existen entre las poblaciones de dos especies de calamares ommastréfidos Dosidicus gigas y Illex argentinus con las series temporales de la temperatura superficial del mar, clorofila a y las estimaciones de biomasa zooplanctónica, lo que resultó en la comprensión de que la temperatura puede afectar directamente a las poblaciones de organismos productores primarios y a los integrantes del zooplancton, y no así a los organismos juveniles y a...

  10. Aislamiento de Microsatélites y flujo Genético en Dosidicus Gigas (D'Orbigny, 1835) entre el Golfo de California y La Costa Occidental de La Península de Baja California, México

    OpenAIRE

    Millán, A.M.

    2010-01-01

    El calamar gigante, Dosidicus gigas (D'Orbigny, 1835) es una especie semioceánica y nerítica endémica del Pacífico Oriental, distribuida desde el norte de California E.U.A (43º N) hasta el sur de Chile (20°S), incluyendo el Golfo de California. Habita aguas desde la superficie hasta 1000 metros de profundad. Particularmente dentro del Golfo de California (México), es considerado uno de los recursos pesqueros más importantes, sin embargo el manejo de la pesquería de éste cefalóp...

  11. Hábitos alimentarios de Dosidicus gigas (D' Orbigny, 1835) (Cephalopoda: Teuthoidea) frente a la costa centro-sur de Chile Feeding habits of Dosidicus gigas (D'Orbigny, 1835) (Cephalopoda: Teuthoidea) in the central-south coast off Chile

    OpenAIRE

    PATRICIO ULLOA; MARTA FUENTEALBA; VÍCTOR RUIZ

    2006-01-01

    Se estudiaron los hábitos alimentarios del calamar rojo Dosidicus gigas (D'Orbigny, 1835) frente a la costa de Chile centro-sur, durante el invierno del año 2005. Se examinaron un total de 52 estómagos, en todos los cuales había contenido alimentario. Los ejemplares provenían de pescas efectuadas por la flota arrastrera industrial que opera entre 36°39' S y 38°55'S sobre la merluza común Merluccius gayi (Guichenot 1848) y a una profundidad media de 290 m sobre la plataforma continental. Para ...

  12. Pulsars: gigantic nuclei

    International Nuclear Information System (INIS)

    What is the real nature of pulsars? This is essentially a question of the fundamental strong interaction between quarks at low-energy scale and hence of the non-perturbative quantum chromo-dynamics, the solution of which would certainly be meaningful for us to understand one of the seven millennium prize problems (i.e., "Yang-Mills Theory") named by the Clay Mathematical Institute. After a historical note, it is argued here that a pulsar is very similar to an extremely big nucleus, but is a little bit different from the gigantic nucleus speculated 80 years ago by L. Landau. The paper demonstrates the similarity between pulsars and gigantic nuclei from both points of view: the different manifestations of compact stars and the general behavior of the strong interaction. (author)

  13. Linfedema escrotal gigante

    Directory of Open Access Journals (Sweden)

    C. Carrasco López

    2013-06-01

    Full Text Available La elefantiasis escrotal es una condición que ha sido historicamente descrita en áreas endémicas de filariasis, siendo menos frecuente su presentación idiopática o asociada a otras entidades. Presentamos un caso de elefantiasis escrotal gigante de causa adquirida al que se le practicó exéresis de estructura linfadematosa con reconstrucción con colgajo local y autoinjerto cutáneo. El caso clínico presentado es raro, ya sea por la baja frecuencia o por su etiología, así como por la importante magnitud del problema. Por esta razón hemos decidido presentarlo para dar a conocer posibilidades terapéuticas y realizar una revisión del tema.

  14. Hábitos alimentarios de Dosidicus gigas (D' Orbigny, 1835 (Cephalopoda: Teuthoidea frente a la costa centro-sur de Chile Feeding habits of Dosidicus gigas (D'Orbigny, 1835 (Cephalopoda: Teuthoidea in the central-south coast off Chile

    Directory of Open Access Journals (Sweden)

    PATRICIO ULLOA

    2006-12-01

    Full Text Available Se estudiaron los hábitos alimentarios del calamar rojo Dosidicus gigas (D'Orbigny, 1835 frente a la costa de Chile centro-sur, durante el invierno del año 2005. Se examinaron un total de 52 estómagos, en todos los cuales había contenido alimentario. Los ejemplares provenían de pescas efectuadas por la flota arrastrera industrial que opera entre 36°39' S y 38°55'S sobre la merluza común Merluccius gayi (Guichenot 1848 y a una profundidad media de 290 m sobre la plataforma continental. Para la descripción del espectro trófico, alimento principal y el establecimiento de las eventuales diferencias sexuales u ontogenéticas en la frecuencia de aparición de los ítemes presa, se utilizaron los métodos numérico, gravimétrico, de frecuencia de ocurrencia, índice de importancia relativa (IIR e índice de similitud porcentual (ISP. No se observaron diferencias sexuales ni ontogenéticas en la frecuencia de aparición de los ítemes presa. Los resultados muestran que D. gigas es un depredador oportunista, principalmente ictiófago, y secundariamente malacófago (incluye el canibalismo y carcinófago. Se discuten los eventuales motivos e implicancias de tal conductaA study on the feeding habits of the jumbo squid Dosidicus gigas (D'Orbigny, 1835 was carried out during the winter season 2005, in waters of the Chilean central and southern Pacific. A total of 52 jumbo squid stomachs from the fishing of the continental slope were collected and examined, in the Eighth and Ninth regions, between 36°40' S and 38°55'S, at an average depth of 290 m. To determine the trophic spectrum, the feeding preferences and the importance of the sex and ontogenetic condition in the diet, the numeric, gravimetric, frequency of occurrence methods, and the index of relative importance and dietary similarity were utilized. The frequency of the prey did not vary with relation to the sex and ontogenetic conditions, and was besides a hight trophic similarity in such

  15. Aspectos biológicos del calamar patagónico Loligo gahi (Cephalopodo: Loliginidae) en Huarmey, Perú

    OpenAIRE

    Franz Cardoso; Juan Tarazona; Carlos Paredes

    2014-01-01

    Se estudió la biología del calamar patagónico Loligo gahi Orbigny sobre la base de muestreos provenientes de las capturas de la pesquería artesanal de Huarmey, Perú), entre febrero y marzo de 1985. Se analizaron las características de la estructura poblacional, reproducción y alimentación.

  16. Aspectos biológicos del calamar patagónico Loligo gahi (Cephalopodo: Loliginidae en Huarmey, Perú

    Directory of Open Access Journals (Sweden)

    Franz Cardoso

    2014-06-01

    Full Text Available Se estudió la biología del calamar patagónico Loligo gahi Orbigny sobre la base de muestreos provenientes de las capturas de la pesquería artesanal de Huarmey, Perú, entre febrero y marzo de 1985. Se analizaron las características de la estructura poblacional, reproducción y alimentación.

  17. Pituitary Gigantism: A Case Report

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    Rana Bhattacharjee

    2012-01-01

    Full Text Available Objective: To present a rare case of gigantism. Case Report: A 25-year-old lady presented with increased statural growth and enlarged body parts noticed since the age of 14 years, primary amenorrhea, and frontal headache for the last 2 years.She has also been suffering from non-inflammatory low back pain with progressive kyphosis and pain in the knees, ankles, and elbows for the last 5 years. There was no history of visual disturbance, vomiting, galactorrhoea, cold intolerance. She had no siblings. Family history was non-contributory.Blood pressure was normal. Height 221 cm, weight 138 kg,body mass index (BMI28. There was coarsening of facial features along with frontal bossing and prognathism, large hands and feet, and small goitre. Patient had severe kyphosis and osteoarthritis of knees. Confrontation perimetry suggested bitemporal hemianopia. Breast and pubic hair were of Tanner stage 1. Serum insulin like growth factor-1 (IGF1 was 703 ng/ml with all glucose suppressedgrowth hormone (GHvalues of >40 ng/ml. Prolactin was 174 ng/ml. Basal serum Lutenising Hormone (LH, follicle stimulating Hormone (FSH was low. Oral glucose tolerance test (OGTT, liver and renal function tests, basal cortisol and thyroid profile, Calcium, phosphorus and Intact Parathyroid hormone (iPTH were normal.Computed tomographyscan of brain showed large pituitary macroadenoma. Automated perimetry confirmed bitemporal hemianopia. A diagnosis of gigantism due to GH secreting pituitary macroadenoma with hypogonadotrophichypogonadism was made. Debulking pituitary surgery followed by somatostatin analogue therapy with gonadal steroid replacement had been planned, but the patient refused further treatment.

  18. Gigantic Suprapubic Lymphedema: A Case Study.

    Science.gov (United States)

    Tanhaeivash, Roozbeh; Franiel, Tobias; Grimm, Marc-Oliver; Horstmann, Marcus

    2016-08-01

    We present the first case study of idiopathic gigantic suprapubic lymphedema and buried penis treated with puboscrotal reconstruction in a patient with initial extreme obesity after an extensive weight reduction (120 kg). Massive localized lymphedema of the suprapubic region should be differentiated from the scrotal type. Severe lymphedema could not resolve on its own and weight reduction does not seem to be helpful in such cases. PMID:27574599

  19. Sotos syndrome: An interesting disorder with gigantism

    OpenAIRE

    Nalini A; Biswas Arundhati

    2008-01-01

    We report the case of a 16-year-old boy diagnosed to have Sotos syndrome, with rare association of bilateral primary optic atrophy and epilepsy. He presented with accelerated linear growth, facial gestalt, distinctive facial features, seizures and progressive diminution of vision in both eyes. He had features of gigantism from early childhood. An MRI showed that brain and endocrine functions were normal. This case is of interest, as we have to be aware of this not so rare disorder. In additio...

  20. Dwarfism and gigantism in historical picture postcards.

    OpenAIRE

    Enderle, A

    1998-01-01

    A collection of 893 historical picture postcards from 1900 to 1935, depicting dwarfs and giants, was analysed from medical and psychosocial viewpoints. In conditions such as 'bird headed dwarfism', achondroplasia, cretinism, so-called Aztecs or pinheads, Grebe chondrodysplasia, and acromegalic gigantism, the disorder could be diagnosed easily. In hypopituitary dwarfism, exact diagnosis was more difficult because of heterogeneity. The most common conditions depicted were pituitary dwarfism and...

  1. Giant basal cell carcinoma Carcinoma basocelular gigante

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    Nilton Nasser

    2012-06-01

    Full Text Available The basal cell carcinoma is the most common skin cancer but the giant vegetating basal cell carcinoma reaches less than 0.5 % of all basal cell carcinoma types. The Giant BCC, defined as a lesion with more than 5 cm at its largest diameter, is a rare form of BCC and commonly occurs on the trunk. This patient, male, 42 years old presents a Giant Basal Cell Carcinoma which reaches 180 cm2 on the right shoulder and was negligent in looking for treatment. Surgical treatment was performed and no signs of dissemination or local recurrence have been detected after follow up of five years.O carcinoma basocelular é o tipo mais comum de câncer de pele, mas o carcinoma basocelular gigante vegetante não atinge 0,5% de todos os tipos de carcinomas basocelulares. O Carcinoma Basocelular Gigante, definido como lesão maior que 5 cm no maior diâmetro, é uma forma rara de carcinoma basocelular e comumente ocorre no tronco. Este paciente apresenta um Carcinoma Basocelular Gigante com 180cm² no ombro direito e foi negligente em procurar tratamento. Foi realizado tratamento cirúrgico e nenhum sinal de disseminação ou recorrência local foi detectada após 5 anos.

  2. Feeding of Blue Marlin Makaira Nigricans off Mazatlan, Sinaloa, Mexico

    OpenAIRE

    Abitia Cárdenas, Leonardo Andrés; Arizmendi Rodríguez, Dana; Gudiño González, Napoleón; Galván Magaña, Felipe

    2010-01-01

    Se analiza el contenido estomacal de 52 marlines azules capturados por la flota de pesca deportiva que operó en el área de Mazatlán, Sinaloa, en el golfo de California, México, durante el periodo octubre 2002 a octubre 2004. El marlín azul se alimenta de 15 categorías alimenticias (ítemes), de las cuales las más importantes de acuerdo al índice de importancia relativa (IRI), fueron el pez melva Auxis spp. (52%) y el calamar gigante Dosidicus gigas (30%).ABSTRACTWe analyzed the stomach content...

  3. Reestructuración en frío de músculo de pescado mediante la incorporación de alginato sódico y transglutaminasa microbiana

    OpenAIRE

    Moreno Conde, Helena María

    2009-01-01

    El objetivo general de la presente Memoria consiste en abordar, a través de diversos estudios parciales, el desarrollo tecnológico de la reestructuración en frío a partir de recortes de músculo picado de merluza congelada (Merluccius capensis), músculo picado de merluza fresca (Merluccius merluccius), trucha fresca (Oncorhynchis mykiss) y surimi de calamar gigante (Dosidicus gigas). Para ello se emplearán diferentes técnicas de procesado que incluyen el empleo de Alginato sódic...

  4. Food Habits of the Yeloow Snapper Lutjanus Argentiventris (Peters, 1869) (Pericoidei: Lutjanidae) in La Paz Bay, Mexico

    OpenAIRE

    Rosa I. Vázquez; Rodríguez, Jesús; Abitia Cárdenas, Leonardo Andrés; Galván Magaña, Felipe

    2008-01-01

    Se analizaron cambios en la distribución de tallas, número de cohortes y condición reproductiva del calamar gigante Dosidicus gigas utilizando muestras provenientes de siete cruceros oceanográficos de investigación, efectuados en la región central del Golfo de California, México de 1997 a 2008. En todas las estaciones se muestrearon hasta 25 ejemplares registrando longitud del manto, sexo y fase de madurez gonádica y cuando la captura lo permitió, se realizó un muestreo masivo de 100 ejemplar...

  5. Pesca con anzuelos en barcos palangreros del Océano Pacífico mexicano: efectos en la captura y peso de tiburones y otras especies

    OpenAIRE

    Galeana-Villaseñor, Ildefonso; Galván Magaña, Felipe; Santana Hernández, Heriberto

    2009-01-01

    Se evaluó el efecto de dos tipos de anzuelos y dos tipos de carnada en la tasa de captura de barcos palangreros en el noroeste del Océano Pacífico mexicano. Se realizaron cuatro viajes de pesca comercial con un total de 47 lances, entre marzo de 2005 y agosto de 2006. Los dos tipos de anzuelos usados fueron: recto 11º de inclinado 9/0 de uso tradicional y circular plano 16/0 (experimental). Se utilizaron dos tipos de carnada: calamar gigante (Dosidicus gigas) y peces juveniles de lisa (Mugil ...

  6. Fungal cell gigantism during mammalian infection.

    Directory of Open Access Journals (Sweden)

    Oscar Zaragoza

    Full Text Available The interaction between fungal pathogens with the host frequently results in morphological changes, such as hyphae formation. The encapsulated pathogenic fungus Cryptococcus neoformans is not considered a dimorphic fungus, and is predominantly found in host tissues as round yeast cells. However, there is a specific morphological change associated with cryptococcal infection that involves an increase in capsule volume. We now report another morphological change whereby gigantic cells are formed in tissue. The paper reports the phenotypic characterization of giant cells isolated from infected mice and the cellular changes associated with giant cell formation. C. neoformans infection in mice resulted in the appearance of giant cells with cell bodies up to 30 microm in diameter and capsules resistant to stripping with gamma-radiation and organic solvents. The proportion of giant cells ranged from 10 to 80% of the total lung fungal burden, depending on infection time, individual mice, and correlated with the type of immune response. When placed on agar, giant cells budded to produce small daughter cells that traversed the capsule of the mother cell at the speed of 20-50 m/h. Giant cells with dimensions that approximated those in vivo were observed in vitro after prolonged culture in minimal media, and were the oldest in the culture, suggesting that giant cell formation is an aging-dependent phenomenon. Giant cells recovered from mice displayed polyploidy, suggesting a mechanism by which gigantism results from cell cycle progression without cell fission. Giant cell formation was dependent on cAMP, but not on Ras1. Real-time imaging showed that giant cells were engaged, but not engulfed by phagocytic cells. We describe a remarkable new strategy for C. neoformans to evade the immune response by enlarging cell size, and suggest that gigantism results from replication without fission, a phenomenon that may also occur with other fungal pathogens.

  7. Sotos syndrome: An interesting disorder with gigantism

    Science.gov (United States)

    Nalini, A.; Biswas, Arundhati

    2008-01-01

    We report the case of a 16-year-old boy diagnosed to have Sotos syndrome, with rare association of bilateral primary optic atrophy and epilepsy. He presented with accelerated linear growth, facial gestalt, distinctive facial features, seizures and progressive diminution of vision in both eyes. He had features of gigantism from early childhood. An MRI showed that brain and endocrine functions were normal. This case is of interest, as we have to be aware of this not so rare disorder. In addition to the classic features, there were two unusual associations with Sotos syndrome in the patient. PMID:19893668

  8. Ondas T negativas gigantes de origen indeterminado

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    Eduardo Eyheremendy

    2009-01-01

    Full Text Available Se define onda T negativa gigante o inversión masiva de la onda T a la aparición de ondas T negativas con una amplitud = 1 mV en por lo menos dos derivaciones contiguas del ECG. Se presenta el caso de una paciente de 66 años con antecedentes de dislipidemia tipo IV e hipertensión arterial leve, a la que en buen estado de salud y totalmente asintomática en un examen de rutina se le detecta en el ECG de superficie un hemibloqueo anterior y ondas T negativas gigantes en las derivaciones I, II, aVL, aVF y de V1 a V6. La paciente fue internada en la UCI, donde se descartó que fueran de origen coronario. Durante el seguimiento, las ondas T se tornaron menos negativas hasta que al cabo de un tiempo (45 días aproximadamente se normalizaron. A pesar de los estudios cardiológicos y no cardiológicos realizados, no se pudo establecer su origen.REV ARGENT CARDIOL 2009;77:131-134.

  9. Analysis of lightning development associated with gigantic jets

    Science.gov (United States)

    Lu, G.; Cummer, S. A.; Lyons, W. A.; Krehbiel, P. R.; Li, J.; Beasley, W. H.; Rison, W.; Thomas, R. J.; Edens, H. E.; Stanley, M. A.; MacGorman, D. R.; Van Der Velde, O. A.; Cohen, M.; Lang, T. J.; Rutledge, S. A.

    2011-12-01

    We have examined two negative gigantic jets that occurred sufficiently near a very high-frequency (VHF) lightning mapping network that the associated lightning development is well characterized. Remote sensing of broadband (strokes, confirming the notion that the major charge transfer during gigantic jets occurred between the cloud and the ionosphere. One of these two jets yielded high-altitude VHF sources above 20 km and up to ~35 km, suggesting that VHF techniques are applicable to detect and track the lower portion of negative jet phenomena. Several gigantic jets observed near Duke University, including one appearing to be of positive polarity, are examined to see if the underlying lightning-gigantic jet correlation as inferred from remote magnetic fields generally fits the picture described above.

  10. Gigantism and Its Implications for the History of Life.

    Science.gov (United States)

    Vermeij, Geerat J

    2016-01-01

    Gigantism-very large body size-is an ecologically important trait associated with competitive superiority. Although it has been studied in particular cases, the general conditions for the evolution and maintenance of gigantism remain obscure. I compiled sizes and dates for the largest species in 3 terrestrial and 7 marine trophic and habitat categories of animals from throughout the Phanerozoic. The largest species (global giants) in all categories are of post-Paleozoic age. Gigantism at this level appeared tens to hundreds of millions of years after mass extinctions and long after the origins of clades in which it evolved. Marine gigantism correlates with high planktic or seafloor productivity, but on land the correspondence between productivity and gigantism is weak at best. All global giants are aerobically active animals, not gentle giants with low metabolic demands. Oxygen concentration in the atmosphere correlates with gigantism in the Paleozoic but not thereafter, likely because of the elaboration of efficient gas-exchange systems in clades containing giants. Although temperature and habitat size are important in the evolution of very large size in some cases, the most important (and rare) enabling circumstance is a highly developed ecological infrastructure in which essential resources are abundant and effectively recycled and reused, permitting activity levels to increase and setting the stage for gigantic animals to evolve. Gigantism as a hallmark of competitive superiority appears to have lost its luster on land after the Mesozoic in favor of alternative means of achieving dominance, especially including social organization and coordinated food-gathering. PMID:26771527

  11. Gigantism and Its Implications for the History of Life.

    Directory of Open Access Journals (Sweden)

    Geerat J Vermeij

    Full Text Available Gigantism-very large body size-is an ecologically important trait associated with competitive superiority. Although it has been studied in particular cases, the general conditions for the evolution and maintenance of gigantism remain obscure. I compiled sizes and dates for the largest species in 3 terrestrial and 7 marine trophic and habitat categories of animals from throughout the Phanerozoic. The largest species (global giants in all categories are of post-Paleozoic age. Gigantism at this level appeared tens to hundreds of millions of years after mass extinctions and long after the origins of clades in which it evolved. Marine gigantism correlates with high planktic or seafloor productivity, but on land the correspondence between productivity and gigantism is weak at best. All global giants are aerobically active animals, not gentle giants with low metabolic demands. Oxygen concentration in the atmosphere correlates with gigantism in the Paleozoic but not thereafter, likely because of the elaboration of efficient gas-exchange systems in clades containing giants. Although temperature and habitat size are important in the evolution of very large size in some cases, the most important (and rare enabling circumstance is a highly developed ecological infrastructure in which essential resources are abundant and effectively recycled and reused, permitting activity levels to increase and setting the stage for gigantic animals to evolve. Gigantism as a hallmark of competitive superiority appears to have lost its luster on land after the Mesozoic in favor of alternative means of achieving dominance, especially including social organization and coordinated food-gathering.

  12. Feeding of blue marlin Makaira nigricans off Mazatlan, Sinaloa, Mexico Alimentación del marlin azul Makaira nigricans del área de Mazatlán, Sinaloa, México

    Directory of Open Access Journals (Sweden)

    Leonardo Abitia-Cárdenas

    2010-01-01

    Full Text Available We analyzed the stomach contents of 52 blue marlins caught between October 2002 and October 2004 by the sport-fishing fleet of Mazatlan, Sinaloa, in the gulf of California, Mexico. Blue marlin feed on 15 food items. According to the index of relative importance (IRI, the most important prey were the frigate or bullet mackerel Auxis spp. (52% and jumbo squid Dosidicus gigas (30%.Se analiza el contenido estomacal de 52 marlines azules capturados por la flota de pesca deportiva que operó en el área de Mazatlan, Sinaloa, en el golfo de California, México, durante el periodo octubre 2002 a octubre 2004. El marlin azul se alimenta de 15 categorías alimenticias (ítemes, de las cuales las más importantes de acuerdo al índice de importancia relativa (IRI, fueron el pez melva Auxis spp. (52% y el calamar gigante Dosidicus gigas (30%.

  13. Tagging studies on the jumbo squid (Dosidicus gigas) in the Gulf of California, Mexico

    OpenAIRE

    Markaida, Unai; Rosenthal, Joshua J. C.; Gilly, William F

    2005-01-01

    Dosidicus gigas, the only species in the genus Dosidicus, is commonly known as the jumbo squid, jumbo flying squid (FAO, see Roper et al., 1984), or Humboldt squid. It is the largest ommastrephid squid and is endemic to the Eastern Pacific, ranging from northern California to southern Chile and to 140oW at the equator (Nesis, 1983; Nigmatullin, et al., 2001). During the last two decades it has become an extremely important fisheries resource in the Gulf of California (Ehrhardt et al., 1983; M...

  14. Macrodystrophia lipomatosa: An unusual cause of localized gigantism

    Directory of Open Access Journals (Sweden)

    S Uma Maheswari

    2016-01-01

    Full Text Available Macrodystrophia lipomatosa (MDL is a rare congenital form of localized gigantism characterized by progressive overgrowth of all mesenchymal elements with a disproportionate increase in fibro adipose tissue. Here we report a case of 20 years old male who presented with history of painless gradual enlargement of entire left upper limb since childhood. Magnetic resonance imaging and histopathology confirmed the diagnosis of macrodystrophia lipomatosa. This condition has to be differentiated from other causes of localized gigantism, since these conditions differ in their course, prognosis, complications and treatment.

  15. First observations of Gigantic Jets from Monsoon Thunderstorms over India

    Science.gov (United States)

    Singh, Rajesh; Maurya, Ajeet; Chanrion, Olivier; Neubert, Torsten; Cummer, Steven; Mlynarczyk, Janusz; Bór, József; Siingh, Devendraa; Cohen, Morris; Kumar, Sushil

    2016-04-01

    Gigantic Jets are electric discharges from thunderstorm cloud tops to the bottom of the ionosphere at ~80 km altitude. After their first discovery in 2001, relatively few observations have been reported. Most of these are from satellites at large distances and a few tens from the ground at higher spatial resolution. Here we report the first Gigantic Jets observed in India from two thunderstorm systems that developed over the land surface from monsoon activity, each storm producing two Gigantic Jets. The jets were recorded by a video camera system at standard video rate (20 ms exposure) at a few hundred km distance. ELF measurements suggest that the jets are of the usual negative polarity and that they develop in less than 40 ms, which is faster than most jets reported in the past. The jets originate from the leading edge of a slowly drifting convective cloud complex close to the highest regions of the clouds and carry ~25 Coulomb of charge to the ionosphere. One jet has a markedly horizontal displacement that we suggest is caused by a combination of close-range cloud electric fields at inception, and longer-range cloud fields at larger distances during full development. The Gigantic Jets are amongst the few that have been observed over land.

  16. Behavior ecology of the Humboldt squid, Dosidicus gigas: insights from an animal-borne video and data logging system

    OpenAIRE

    Bell, Lauren Elizabeth

    2011-01-01

    Dosidicus gigas is a large pelagic cephalopod of the eastern Pacific that has recently undergone an unexpected, significant range expansion up the coast of North America. The impact that such a range expansion is expected to have on local fisheries and marine ecosystems has motivated a thorough study of this top predator, a squid whose lifestyle has been quite mysterious until recently. Unfortunately, Dosidicus spends daylight hours at depths prohibitive to making observations without signifi...

  17. Lack of genetic differentiation among size groups of jumbo squid (Dosidicus gigas)

    OpenAIRE

    E Sandoval-Castellanos; M Uribe-Alcocer; P Díaz-Jaimes

    2009-01-01

    The population structure of the jumbo squid (Dosidicus gigas) is complex, containing several cohorts and three groups defined by their size (small, medium, and large) and by differences in maturation, growth, and life span. Several authors have indicated the possibility of such groups representing discrete genetic units even at level subspecies or species in statu nascendi. Genetic divergence was tested in samples from the Gulf of California (Mexico) and Peruvian Sea by estimation of populati...

  18. Physico-chemical and film forming properties of giant squid (Dosidicus gigas) gelatin

    OpenAIRE

    Giménez, B.; Gómez Estaca, Joaquín; Alemán, A.; Gómez Guillén, M. C.; Montero García, Pilar

    2009-01-01

    Giant squid (Dosidicus gigas) inner and outer tunics were subjected to hydrolysis with pepsin prior to gelatin extraction (G1 gelatin) by a mild-acid procedure. Furthermore, a second gelatin extraction (G2 gelatin) was done using the collagenous residues that remained from the first extraction. Pepsin allows the collagen solubilisation and the extraction yield to increase by yielding extracts high in α-chains. G1 exhibited good gel forming ability but G2 showed poor viscoelastic behaviour and...

  19. The biology and ecology of the jumbo squid Dosidicus gigas (Cephalopoda) in Chilean waters: a review

    OpenAIRE

    Christian M Ibáñez; Roger D Sepúlveda; Patricio Ulloa; Friedemann Keyl; M. CECILIA PARDO-GANDARILLAS

    2015-01-01

    ABSTRACT. The jumbo squid Dosidicus gigas is the most abundant cephalopod species in the southeastern Pacific Ocean, which supports the biggest cephalopod fishery in the world. Due to its growing economic importance, the population growth and distributional expansion of this squid is being increasingly studied. Nevertheless, some basic features of the biology of D. gigas are still unknown or have been poorly investigated. In this review we summarize the known information regarding the biology...

  20. Size increment of jumbo flying squid Dosidicus gigas mature females in Peruvian waters, 1989-2004

    Science.gov (United States)

    Argüelles, Juan; Tafur, Ricardo; Taipe, Anatolio; Villegas, Piero; Keyl, Friedeman; Dominguez, Noel; Salazar, Martín

    2008-10-01

    Changes in population structure of the jumbo flying squid Dosidicus gigas in Peruvian waters were studied based on size-at-maturity from 1989 to 2004. From 1989 to 1999, mature squid belonging to the medium-sized group prevailed, but from 2001 on, mature squids were larger. This change is not related to the changes in sea surface temperature and we hypothesized that it was caused by the population increase of mesopelagic fishes as prey.

  1. Comprehensive Model of Jumbo Squid Dosidicus gigas Trophic Ecology in the Northern Humboldt Current System

    OpenAIRE

    Alegre, Ana; Ménard, Frédéric; Tafur, Ricardo; Espinoza, Pepe; Argüelles, Juan; Maehara, Víctor; Flores, Oswaldo; Simier, Monique; Bertrand, Arnaud

    2014-01-01

    The jumbo squid Dosidicus gigas plays an important role in marine food webs both as predator and prey. We investigated the ontogenetic and spatiotemporal variability of the diet composition of jumbo squid in the northern Humboldt Current system. For that purpose we applied several statistical methods to an extensive dataset of 3,618 jumbo squid non empty stomachs collected off Peru from 2004 to 2011. A total of 55 prey taxa was identified that we aggregated into eleven groups. Our results evi...

  2. Invasive range expansion by the Humboldt squid, Dosidicus gigas, in the eastern North Pacific

    OpenAIRE

    Zeidberg, Louis D.; Robison, Bruce H.

    2007-01-01

    A unique 16-year time series of deep video surveys in Monterey Bay reveals that the Humboldt squid, Dosidicus gigas, has substantially expanded its perennial geographic range in the eastern North Pacific by invading the waters off central California. This sustained range expansion coincides with changes in climate-linked oceanographic conditions and a reduction in competing top predators. It is also coincident with a decline in the abundance of Pacific hake, the most important commercial grou...

  3. Jumbo Squid (Dosidicus gigas) in situ Target Strength measurements in Northwest Mexico

    OpenAIRE

    Villalobos, H.; Manini-Ramos, F.; Salinas-Zavala, C.; Brehmer, Patrice

    2013-01-01

    In order to convert acoustic abundance indexes into biomass is essential to establish the relationship between squid size dorsal mantle length (DML) and acoustic Target Strength (TS). We had carried out in situ measurement in 2012 off Baja California on Dosidicus gigas. For both frequencies, we found significant differences between modes of measured and predicted TS distributions, 6 and 11 dB for 120 and 38 kHz, respectively. It is known that TS varies with several factors, including echosoun...

  4. Irradiación gamma en anillas de calamar (Illex argentinus) y filetes marinados de anchoíta (Engraulis anchoita) : Aspectos tecnológicos y de calidad

    OpenAIRE

    Tomac, Alejandra

    2013-01-01

    Se estudió desde un abordaje multidisciplinario el efecto de la irradiación gamma sobre dos productos pesqueros, a fin de analizar la factibilidad de extender su vida comercial en refrigeración. Se utilizaron dos productos que difieren en su composición y preservación: anillas de calamar (Illex argentinus) frescas y filetes marinados de anchoíta (Engraulis anchoita). En distintas experiencias se aplicó la irradiación gamma mediante una fuente de Cobalto-60, en la planta de irradiación semi...

  5. Invasive range expansion by the Humboldt squid, Dosidicus gigas, in the eastern North Pacific.

    Science.gov (United States)

    Zeidberg, Louis D; Robison, Bruce H

    2007-07-31

    A unique 16-year time series of deep video surveys in Monterey Bay reveals that the Humboldt squid, Dosidicus gigas, has substantially expanded its perennial geographic range in the eastern North Pacific by invading the waters off central California. This sustained range expansion coincides with changes in climate-linked oceanographic conditions and a reduction in competing top predators. It is also coincident with a decline in the abundance of Pacific hake, the most important commercial groundfish species off western North America. Recognizing the interactive effects of multiple changes in the environment is an issue of growing concern in ocean conservation and sustainability research. PMID:17646649

  6. Possible Gigantic Variations on the Width of Viscoelastic Fingers

    CERN Document Server

    Poire, E C; Poire, Eugenia Corvera

    2002-01-01

    We analyze the effect of frequency on the width of a single finger displacing a viscoelastic fluid. We derive a generalized Darcy's law in the frequency domain for a linear viscoelastic fluid flowing in a Hele Shaw cell. This leads to an analytic expression for the dynamic permeability that has maxima which are several orders of magnitude larger than the static permeability. We then follow an argument of de Gennes to obtain the smallest possible finger width when viscoelasticity is important. Using this, and a conservation law, we obtain a lowest bound for the width of a single finger displacing a viscoelastic fluid. Our results indicate that when a small amplitude signal of the frequency that maximizes the permeability is overimposed to a constant pressure drop, gigantic variations are obtained for the finger width.

  7. Gate-tunable gigantic lattice deformation in VO2

    International Nuclear Information System (INIS)

    We examined the impact of electric field on crystal lattice of vanadium dioxide (VO2) in a field-effect transistor geometry by in-situ synchrotron x-ray diffraction measurements. Whereas the c-axis lattice parameter of VO2 decreases through the thermally induced insulator-to-metal phase transition, the gate-induced metallization was found to result in a significant increase of the c-axis length by almost 1% from that of the thermally stabilized insulating state. We also found that this gate-induced gigantic lattice deformation occurs even at the thermally stabilized metallic state, enabling dynamic control of c-axis lattice parameter by more than 1% at room temperature

  8. Biological patterns of the Argentine shortfin squid Illex argentinus in the slope trawl fishery off Brazil Patrones biológicos del calamar argentino Illex argentinus en la pesquería de arrastre en el talud continental de Brasil

    Directory of Open Access Journals (Sweden)

    José Angel Alvarez Perez

    2009-01-01

    Full Text Available Commercial exploitation of the Argentine shortfin squid (Illex argentinus was virtually non-existent in Brazilian waters until 2000 when foreign trawlers initiated their operations on slope grounds as part of a government-induced chartering program. Since then, the species has been included among the targets of a developing slope trawl fishing off southeastern and southern Brazil. Biological samples were collected from commercial catches of 25 national and seven foreign (chartered trawlers between 23°-33°S and 170-740 m depth. These samples represent two periods of the commercial exploitation of Illex argentinus in Brazil: 2001-2003, when both chartered and national trawlers operated simultaneously, and 2006-2007, when only national vessels continued to exploit I. argentinus along with other slope stocks. Catches contained immature and ma-turing squid throughout the year, as well as at least two distinct, fully mature, spawning groups: one composed of small-sized males and females present year-round on the shelf-break/ upper slope (La explotación comercial del calamar argentino (Illex argentinus no existía en aguas brasilenas hasta el año 2000, cuando buques extranjeros iniciaron sus operaciones en el talud como parte de un programa gubernamental de arrendamiento. Desde entonces la especie forma parte de un conjunto de recursos que han motivado el desarrollo de una pesquería de arrastre en el talud del sur y sureste de Brasil. Se colectaron muestras biológicas de las capturas comerciales de 25 buques arrastreros nacionales y siete extranjeros entre los paralelos 23°-33°S y en profundidades de 170 a 740 m. Estas muestras representaron dos periodos de la explotación comercial de I. argentinus en Brasil: 2001-2003, cuando buques nacionales y extranjeros operaron simultáneamente, y 2006-2007 cuando sólo buques nacionales permanecieron explotando el calamar argentino en conjunto con otros recursos del talud. Las capturas estuvieron

  9. Towards the Gigantic: Entification and Standardization as Technologies of Control

    Directory of Open Access Journals (Sweden)

    Petter G. Almklov

    2012-12-01

    Full Text Available This paper is based on studies of how standardized entities work as elements in a regime to control risk and hazardous work. Drawing on empirical examples from the petroleum industry and infrastructure sectors, we illustrate not only the mech-anisms by which particular modes of entification are involved in regimes of con-trol but also their shortcomings and seductive powers as representations. We show how the world is semantically captured and organized to consist of controllable standardized entities by the organizational regimes in the industries we have stud-ied. This mode of entification is particularly effective in providing transcontextual mobility, as the registered entities can enter the ever-expanding information infra-structures of modernity. Although information infrastructures comprise the stand-ards regulating communication, they commonly materialize in information and communication technologies (ICT that provide an increasing number of effective and ubiquitous pathways through which standardized semantic signs can move and have effects. This is a core concern in the increasing focus on management by detailed regimes of accountability, measurement and standardization seen in most modern organizations. These developments, combined with the representational shortcomings of the standardized entifications, lead to a movement towards the gigantic. An ever-increasing number of signs with increasingly higher granularity are produced in order to control an ever-elusive non-entified world.

  10. Mioma uterino gigante. Presentación de un caso

    Directory of Open Access Journals (Sweden)

    Ramón Ángel García Cruz

    2014-01-01

    Full Text Available El descubrimiento de una masa pélvica en una mujer puede ocurrir por los síntomas que produce o porque su aumento progresivo de volumen afecte algunas funciones. El caso que se presenta trata de una paciente que acudió al Chinhoyi Provincial Hospital de Boswuana por aumento exagerado del abdomen, así como dificultad para la micción y la respiración, con dolor y edemas en miembros inferiores. La citología, la colposcopia y la biopsia endometrial no se pudieron realizar, el estudio transvaginal confirmó la masa pélvica ya sospechada durante el examen clínico. La laparotomía fue planificada, y se encontró una masa pélvica en fundus uterino compatible con mioma subseroso gigante. Se practicó la histerectomía total abdominal con doble anexectomía. El postoperatorio fue satisfactorio. Se considera importante la publicación de este artículo con fines docentes, a partir de la necesidad de trasmitir estas experiencias a los ginecólogos noveles.

  11. Atmospheric oxygen and the evolution of insect gigantism

    Science.gov (United States)

    Dudley, R.

    2003-04-01

    Geophysical analyses suggest the presence of a late Paleozoic oxygen pulse beginning in the late Devonian and continuing through to the late Carboniferous. During this time, atmospheric oxygen levels increased to values potentially as high as 35% relative to the contemporary value of 21%. Widespread gigantism in late Paleozoic insects and other arthropods is consistent with enhanced oxygen flux within diffusion-limited tracheal systems, and thus with relaxation of constraints on maximum insect body size. Because total atmospheric pressure increases with increased oxygen partial pressure, concurrently hyperdense conditions would have augmented aerodynamic force production in early forms of flying insects. Hyperoxia of the late Paleozoic atmosphere may also have physiologically facilitated the initial evolution of insect flight metabolism. By the late Permian, evolution of decompositional microbial and fungal communities together with disequilibrium in rates of carbon deposition gradually reduced oxygen concentrations to values possibly as low as 15%. The disappearance of giant insects by the end of the Permian is consistent with extinction of these taxa for reasons of asphyxiation on a geological time scale. In modern selection experiments with Drosophila flies, substantial plasticity in body size can be evoked under conditions of variable oxygen. In particular, moderate hyperbaria (and thus hyperoxia) evokes a 20% increase in adult body size over merely five generations, suggesting ready capacity for evolutionary responses by insects to fluctuating atmospheric oxygen.

  12. The jumbo squid, Dosidicus gigas (Ommastrephidae), living in oxygen minimum zones II: Blood-oxygen binding

    Science.gov (United States)

    Seibel, Brad A.

    2013-10-01

    Dosidicus gigas is a large, metabolically active squid that migrates across a strong oxygen and temperature gradient in the Eastern Pacific. Here we analyze the oxygen-binding properties of the squid's respiratory protein (hemocyanin, Hc) that facilitate such activity. A high Hc-oxygen affinity, strong temperature dependence, and pronounced pH sensitivity (P50=0.009T2.03, pH 7.4; Bohr coefficient=ΔlogP50/ΔpH=-1.55+0.034T) of oxygen binding facilitate night-time foraging in the upper water column, and support suppressed oxygen demand in hypoxic waters at greater depths. Expanding hypoxia may act to alter the species habitable depth range. This analysis supports the contention that ocean acidification could limit oxygen carrying capacity in squids at warmer temperature leading to reduced activity levels or altered distribution.

  13. [Determination of proximal chemical composition of squid (dosidicus gigas) and development of gel products].

    Science.gov (United States)

    Abugoch, L; Guarda, A; Pérez, L M; Paredes, M P

    1999-06-01

    The good nutritional properties of meat from big squid (Dosidicus gigas) living on the Chilean coast, was determined through its proximal composition 70 cal/100 g fresh meat; 82.23 +/- 0.98% moisture; 15.32 +/- 0.93% protein; 1.31 +/- 0.12% ashes; 0.87 +/- 0.18% fat and 0.27% NNE (non-nitrogen extract). The big squid meat was used to develop a gel product which contained NaCl and TPP. It was necessary to use additives for gel preparation, such as carragenin or alginate or egg albumin, due to the lack of gelation properties of squid meat. Formulations containing egg albumin showed the highest gel force measured by penetration as compared to those that contained carragenin or alginate. PMID:10488395

  14. Trophic relationships between the jumbo squid (Dosidicus gigas) and the lightfish (Vinciguerria lucetia) in the Humboldt Current System off Peru

    OpenAIRE

    Rosas-Luis, Rigoberto; Tafur-Jimenez, Ricardo; Alegre-Norza, Ana R.; Castillo-Valderrama, Pedro R.; Cornejo-Urbina, Rodolfo M.; Salinas-Zavala, Cesar A.; Sánchez, Pilar

    2011-01-01

    [EN] Acoustic surveys for assessing the biomass and distribution of the jumbo squid (Dosidicus gigas) and the lightfish (Vinciguerria lucetia) were carried out in the Humboldt Current System of Peru in 2007 and 2008. At the same time, 937 jumbo squid were caught and their stomach contents analyzed. The diet of the jumbo squid was dominated by mesopelagic fish. The first component of their fish diet was V. lucetia and the second component was the myctophid fish Diogenichthys laternatus. Acoust...

  15. Effect of Bovine Plasma Protein on Autolysis and Gelation of Protein Extracted from Giant Squid (Dosidicus gigas) Mantle

    OpenAIRE

    Laura Raquel Marquez-Alvarez; Wilfrido Torres-Arreola; Victor Manuel Ocano-Higuera; Benjamin Ramirez-Wong; Enrique Marquez-Rios

    2015-01-01

    The effect of bovine plasma protein (BPP) on the inhibition of autolytic activity and its effect on the gelling properties of a protein concentrate (PC) obtained from jumbo squid (Dosidicus gigas) mantle were investigated. Sols and gels were prepared from the PC by adding different amounts of BPP (0, 1, and 2%). Dynamic oscillatory measurements indicated that systems with 1% BPP had a higher elastic modulus (G′), in which hydrophobic interactions were favored. Concerning the technological and...

  16. Stable isotopes on jumbo squid (Dosidicus gigas) beaks to esitmate its trophic positon: comparison between stomach contents and stable isotopes

    OpenAIRE

    Ruiz Cooley, R.I.; Markaida, U.; Gendron, Diane; Aguíñiga García, Sergio

    2006-01-01

    Stomach contents and carbon (C) and nitrogen (N) stable isotope analysis were used to evaluate trophic relationships of jumbo squid, Dosidicus gigas. Buccal masses, beaks and stomach contents of large and medium maturing-sized jumbo squid and muscle from its main prey, the myctophid Benthosema panamense, were collected in the Gulf of California, Mexico during 1996, 1997 and 1999. Both the quantified C and N-isotope ratios in muscle, and stomach content analysis revealed that larger-sized matu...

  17. The Cephalopod Dosidicus gigas of the Humboldt Current System Under the Impact of Fishery and Environmental Variability

    OpenAIRE

    Keyl, Friedemann

    2009-01-01

    Marine organisms are influenced by environmental variability and fishery and cephalopods are especially plastic in their response to exogenous factors. Underlying mechanisms of interactions are often unclear and complex. The ommastrephid jumbo squid (Dosidicus gigas) is an important component in the ecosystems of the Eastern Pacific Ocean and like other cephalopods rapidly changes abundances of its populations and their size structure. Results of the present work show that the morphological a...

  18. Biology of the sauropod dinosaurs: the evolution of gigantism

    Science.gov (United States)

    Sander, P Martin; Christian, Andreas; Clauss, Marcus; Fechner, Regina; Gee, Carole T; Griebeler, Eva-Maria; Gunga, Hanns-Christian; Hummel, Jürgen; Mallison, Heinrich; Perry, Steven F; Preuschoft, Holger; Rauhut, Oliver W M; Remes, Kristian; Tütken, Thomas; Wings, Oliver; Witzel, Ulrich

    2011-01-01

    The herbivorous sauropod dinosaurs of the Jurassic and Cretaceous periods were the largest terrestrial animals ever, surpassing the largest herbivorous mammals by an order of magnitude in body mass. Several evolutionary lineages among Sauropoda produced giants with body masses in excess of 50 metric tonnes by conservative estimates. With body mass increase driven by the selective advantages of large body size, animal lineages will increase in body size until they reach the limit determined by the interplay of bauplan, biology, and resource availability. There is no evidence, however, that resource availability and global physicochemical parameters were different enough in the Mesozoic to have led to sauropod gigantism. We review the biology of sauropod dinosaurs in detail and posit that sauropod gigantism was made possible by a specific combination of plesiomorphic characters (phylogenetic heritage) and evolutionary innovations at different levels which triggered a remarkable evolutionary cascade. Of these key innovations, the most important probably was the very long neck, the most conspicuous feature of the sauropod bauplan. Compared to other herbivores, the long neck allowed more efficient food uptake than in other large herbivores by covering a much larger feeding envelope and making food accessible that was out of the reach of other herbivores. Sauropods thus must have been able to take up more energy from their environment than other herbivores. The long neck, in turn, could only evolve because of the small head and the extensive pneumatization of the sauropod axial skeleton, lightening the neck. The small head was possible because food was ingested without mastication. Both mastication and a gastric mill would have limited food uptake rate. Scaling relationships between gastrointestinal tract size and basal metabolic rate (BMR) suggest that sauropods compensated for the lack of particle reduction with long retention times, even at high uptake rates. The

  19. Cisto gigante de colédoco Giant choledochal cyst

    Directory of Open Access Journals (Sweden)

    Olival Cirilo Lucena da Fonseca-Neto

    2007-12-01

    Full Text Available INTRODUÇÃO: A doença cística das vias biliares é anomalia congênita que pode acometer as vias biliares intra e/ou extra-hepáticas. A extra-hepática inclui os cistos de colédoco e a intra-hepática é conhecida por Doença de Caroli. Os cistos de colédoco de tamanho gigante são muito raros. OBJETIVO: Relatar o caso de um cisto de colédoco de tamanho gigante em uma paciente feminina. RELATO DE CASO: Mulher de 19 anos foi admitida com história de icterícia e acolia fecal há sete dias. Referia dor epigástrica associada com ingestão de dieta rica em gordura. Nos antecedentes pessoais relatou dois episódios de icterícia, aos 8 e 14 anos, que progrediram espontaneamente. No exame físico apresentava icterícia (+3/+4 e uma massa palpável indolor em mesogástrio foram os únicos achados. A ultrassonografia demonstrou grande formação cística de paredes finas adjacente ao hepatocolédoco, pâncreas e rim direito que media 18,5 x 10,2 cm. A colangioressonância confirmou o grande cisto de colédoco e hepatojejunoanastomose em "Y" de Roux após excisão do cisto e colecistectomia foi realizada. A formação cística media 20 x 15,5 x 12,5 cm e com um volume médio de 1000 mL. A paciente encontra-se em acompanhamento ambulatorial sem alterações hepatobiliares após o sétimo mês da operação. CONCLUSÃO: O cisto de colédoco deve fazer parte do diagnóstico diferencial em pacientes adultos jovens com icterícia e massa palpável; no entanto, a diferenciação entre ele e neoplasia maligna deve ser pesquisada.BACKGROUND: Choledochal cyst represents a rare congenital anomaly, eventually associated with intra and extrahepatic biliary tract disorders. Extrahepatic diseases include choledochal cysts and congenital dilation of the lower intrahepatic bile duct is known as Caroli's disease. Giant choledochal cyst constitutes a very rare abnormality. AIM:To report a giant choledochal cyst in a female patient. CASE REPORT: A 19-year

  20. Spontaneous remission of acromegaly or gigantism due to subclinical apoplexy of pituitary growth hormone adenoma

    Institute of Scientific and Technical Information of China (English)

    WANG Xian-ling; DOU Jing-tao; L(U) Zhao-hui; ZHONG Wen-wen; BA Jian-ming; JIN Du; LU Ju-ming; PAN Chang-yu; MU Yi-ming

    2011-01-01

    Background Subclinical apoplexy of pituitary functional adenoma can cause spontaneous remission of hormone hypersecretion.The typical presence of pituitary growth hormone (GH) adenoma is gigantism and/or acromegaly.We investigated the clinical characteristics of patients with spontaneous partial remission of acromegaly or gigantism due to subclinical apoplexy of GH adenoma.Methods Six patients with spontaneous remission of acromegaly or gigantism were enrolled.The clinical characteristics,endocrinological evaluation and imageological characteristics were retrospectively analyzed.Results In these cases,the initial clinical presences were diabetes mellitus or hypogonadism.No abrupt headache,vomiting,visual function impairment,or conscious disturbance had ever been complained of.The base levels of GH and insulin growth factor-1 (IGF-1) were normal or higher,but nadir GH levels were all still >1 μg/L in 75 g oral glucose tolerance test.Magnetic resonance imaging detected enlarged sella,partial empty sella and compressed pituitary.The transsphenoidal surgery was performed in 2 cases,and the other patients were conservatively managed.All the patients were in clinical remission.Conclusions When the clinical presences,endocrine evaluation,biochemical examination and imageology indicate spontaneous remission of GH hypersecretion in patients with gigantism or acromegaly,the diagnosis of subclinical apoplexy of pituitary GH adenoma should be presumed.To these patients,conservative therapy may be appropriate.

  1. Breast vasculitis in association with breast gigantism in a pregnant patient with systemic lupus erythematosus.

    OpenAIRE

    Propper, D J; Reid, D.M.; Stankler, L.; Eastmond, C J

    1991-01-01

    A 24 year old woman with systemic lupus erythematosus (SLE) developed widespread necrotic skin ulceration and gigantism of both breasts during an exacerbation of SLE in the last trimester of her second pregnancy. Over the remainder of the pregnancy the ulceration was only controlled by high dose corticosteroids. After parturition, however, it was possible to reduce the steroid dose without recurrence of the ulceration.

  2. Reversible stress softening of collagen based networks from the jumbo squid mantle (Dosidicus gigas)

    Energy Technology Data Exchange (ETDEWEB)

    Torres, F.G., E-mail: fgtorres@pucp.edu.pe [Department of Mechanical Engineering, Catholic University of Peru, Lima 32 (Peru); Troncoso, O.P.; Rivas, E.R. [Department of Mechanical Engineering, Catholic University of Peru, Lima 32 (Peru); Gomez, C.G. [Departament de Química Física and Institut de Ciencia dels Materials, Universitat de València, Dr. Moliner 50, Burjassot, E-46100 Valencia (Spain); Lopez, D. [Instituto de Ciencia y Tecnología de Polímeros, C.S.I.C., Calle Juan de la Cierva 3, 28006 Madrid (Spain)

    2014-04-01

    Dosidicus gigas is the largest and one of the most abundant jumbo squids in the eastern Pacific Ocean. In this paper we have studied the muscle of the mantle of D. gigas (DGM). Morphological, thermal and rheological properties were assessed by means of atomic force microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, differential scanning calorimetry, thermogravimetry and oscillatory rheometry. This study allowed us to assess the morphological and rheological properties of a collagen based network occurring in nature. The results showed that the DGM network displays a nonlinear effect called reversible stress softening (RSS) that has been previously described for other types of biological structures such as naturally occurring cellulose networks and actin networks. We propose that the RSS could play a key role on the way jumbo squids withstand hydrostatic pressure. The results presented here confirm that this phenomenon occurs in a wider number of materials than previously thought, all of them exhibiting different size scales as well as physical conformation. - Highlights: • We studied the structure property relationships of the jumbo squid mantle. • Rheological tests showed that such a mantle exhibits reversible stress softening (RSS). • RSS could also play a role on the way jumbo squids withstand hydrostatic pressure.

  3. Reversible stress softening of collagen based networks from the jumbo squid mantle (Dosidicus gigas)

    International Nuclear Information System (INIS)

    Dosidicus gigas is the largest and one of the most abundant jumbo squids in the eastern Pacific Ocean. In this paper we have studied the muscle of the mantle of D. gigas (DGM). Morphological, thermal and rheological properties were assessed by means of atomic force microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, differential scanning calorimetry, thermogravimetry and oscillatory rheometry. This study allowed us to assess the morphological and rheological properties of a collagen based network occurring in nature. The results showed that the DGM network displays a nonlinear effect called reversible stress softening (RSS) that has been previously described for other types of biological structures such as naturally occurring cellulose networks and actin networks. We propose that the RSS could play a key role on the way jumbo squids withstand hydrostatic pressure. The results presented here confirm that this phenomenon occurs in a wider number of materials than previously thought, all of them exhibiting different size scales as well as physical conformation. - Highlights: • We studied the structure property relationships of the jumbo squid mantle. • Rheological tests showed that such a mantle exhibits reversible stress softening (RSS). • RSS could also play a role on the way jumbo squids withstand hydrostatic pressure

  4. Partial characterization of an effluent produced by cooking of Jumbo squid (Dosidicus gigas) mantle muscle.

    Science.gov (United States)

    Rosas-Romero, Zaidy G; Ramirez-Suarez, Juan C; Pacheco-Aguilar, Ramón; Lugo-Sánchez, Maria E; Carvallo-Ruiz, Gisela; García-Sánchez, Guillermina

    2010-01-01

    Jumbo squid (Dosidicus gigas) mantle muscle was cooked simulating industrial procedures (95 degrees C x 25 min, 1.2:5 muscle:water ratio). The effluent produced was analyzed for chemical and biochemical oxygen demands (COD and BOD(5), respectively), proximate analysis, flavor-related compounds (free amino acids, nucleotides and carbohydrates) and SDS-PAGE. The COD and BOD(5) exhibited variation among samplings (N=3) (27.4-118.5 g O(2)/L for COD and 11.3-26.7 g O(2)/L for BOD(5)). The effluent consisted of 1% total solids, 75% of which represented crude protein. Sixty percent of the total free amino acid content, which imparts flavor in squid species, corresponded to glutamic acid, serine, glycine, arginine, alanine, leucine and lysine. The nucleotide concentration followed this order, Hx>ADP>AMP>ATP>IMP>HxR. The variation observed in the present work was probably due to physiological maturity differences among the squid specimens (i.e., juvenile versus mature). Solids present in squid cooking effluent could be recovered and potentially used as flavor ingredients in squid-analog production by the food industry. PMID:19748263

  5. Investigation of jumbo squid (Dosidicus gigas) skin gelatin peptides for their in vitro antioxidant effects.

    Science.gov (United States)

    Mendis, Eresha; Rajapakse, Niranjan; Byun, Hee-Guk; Kim, Se-Kwon

    2005-09-01

    Peptides derived from tryptic hydrolysate of jumbo squid (Dosidicus gigas) skin gelatin were assessed for their antioxidant properties in different in vitro assay systems. The hydrolysate itself exhibited a strong lipid peroxidation inhibition and it was much higher than that of natural antioxidant, alpha-tocopherol. In addition, it could scavenge highly active free radicals in oxidative systems, in the order of hydroxyl and carbon-centered radicals. Two representative peptides with comparatively higher antioxidant potency were purified and characterized as Phe-Asp-Ser-Gly-Pro-Ala-Gly-Val-Leu (880.18 Da) and Asn-Gly-Pro-Leu-Gln-Ala-Gly-Gln-Pro-Gly-Glu-Arg (1241.59 Da). Furthermore, viability of radical-mediated oxidation-induced human lung fibroblasts was enhanced following the treatment of two peptides. However it did not exhibit substantial ion chelation, and we presumed that the observed radical scavenging potency of these peptides play a vital role for their strong antioxidant activity. Based on our results we suggest that hydrophobic amino acids present in peptide sequences contributed greatly for observed antioxidant activities. PMID:15916780

  6. Characteristics of deacetylation and depolymerization of β-chitin from jumbo squid (Dosidicus gigas) pens.

    Science.gov (United States)

    Jung, Jooyeoun; Zhao, Yanyun

    2011-09-27

    This study evaluated the deacetylation characteristics of β-chitin from jumbo squid (Dosidicus gigas) pens by using strongly alkaline solutions of NaOH or KOH. Taguchi design was employed to investigate the effect of reagent concentration, temperature, time, and treatment step on molecular mass (MM) and degree of deacetylation (DDA) of the chitosan obtained. The optimal treatment conditions for achieving high MM and DDA of chitosan were identified as: 40% NaOH at 90°C for 6h with three separate steps (2h+2h+2h) or 50% NaOH at 90°C for 6h with one step, or 50% KOH at 90°C for 4h with three steps (1h+1h+2h) or 6h with one step. The most important factor affecting DDA and MM was temperature and time, respectively. The chitosan obtained was then further depolymerized by cellulase or lysozyme with cellulase giving a higher degradation ratio, lower relative viscosity, and a larger amount of reducing-end formations than that of lysozyme due to its higher susceptibility. This study demonstrated that jumbo squid pens are a good source of materials to produce β-chitosan with high DDA and a wide range of MM for various potential applications. PMID:21700271

  7. Onshore-offshore movement of jumbo squid (Dosidicus gigas) on the continental shelf

    Science.gov (United States)

    Stewart, Julia S.; Gilly, William F.; Field, John C.; Payne, John C.

    2013-10-01

    Jumbo squid (Dosidicus gigas) have greatly extended their range in the California Current System, where they forage on a variety of ecologically and economically important species that inhabit both coastal and offshore mesopelagic regions. Swimming abilities and behavior are important factors in assessing the impacts of this range expansion, particularly in regard to foraging in conjunction with onshore-offshore movement over the continental shelf. Here we describe a study of horizontal movements by jumbo squid along and across the continental shelf off Washington, USA, using acoustic tags in association with the Census of Marine Life's Pacific Ocean Shelf Tracking Program (POST) receiver arrays. We detected frequent movements along the shelf break, movement onto the shelf at night, and no evidence of movement as a cohesive school. Our results demonstrate feasibility of using acoustic tags and arrays to document horizontal movements of jumbo squid along and across the continental shelf. This is important in order to determine how those movements overlap with those of other ecologically and commercially important fish species.

  8. Purification and characterization of trimethylamine-N-oxide demethylase from jumbo squid (Dosidicus gigas).

    Science.gov (United States)

    Fu, Xue-Yan; Xue, Chang-Hu; Miao, Ben-Chun; Liang, Jun-Ni; Li, Zhao-Jie; Cui, Feng-Xia

    2006-02-01

    Trimethylamine-N-oxide demethylase (TMAOase) was purified from Jumbo squid (Dosidicus gigas) and characterized in detail herein. The TMAOase was extracted from squid with 20 mM Tris-acetate buffer (pH 7.0) containing 1.0 M NaCl, followed by acid treatment and heat treatment. Then it was purified by deithylaminoethyl-cellulose and Sephacryl S-300 chromatography, subsequently resulting in an 839-fold purification. The molecular mass of the TMAOase was defined to be 17.5 kDa. The optimum pH of the purified TMAOase was 7.0, and its optimum temperature was confirmed to be 55 degrees C. The TMAOase was stable to heat treatment up to 50 degrees C and stable at pH 7.0-9.0. Reducing agents such as DTT, Na2SO3, and NADH were effective at activating TMAOase, and ethylenediaminetetraacetic acid, as well as Mg2+ and Ca2+, could also enhance the activity of TMAOase remarkably, whereas the TMAOase could be significantly inhibited by tea polyphenol, phytic acid and acetic acid. In addition, the TMAOase converted TMAO to dimethylamine and formaldehyde stoichiometrically with a K(m) of 26.2 mM. PMID:16448210

  9. Reversible stress softening of collagen based networks from the jumbo squid mantle (Dosidicus gigas).

    Science.gov (United States)

    Torres, F G; Troncoso, O P; Rivas, E R; Gomez, C G; Lopez, D

    2014-04-01

    Dosidicus gigas is the largest and one of the most abundant jumbo squids in the eastern Pacific Ocean. In this paper we have studied the muscle of the mantle of D. gigas (DGM). Morphological, thermal and rheological properties were assessed by means of atomic force microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, differential scanning calorimetry, thermogravimetry and oscillatory rheometry. This study allowed us to assess the morphological and rheological properties of a collagen based network occurring in nature. The results showed that the DGM network displays a nonlinear effect called reversible stress softening (RSS) that has been previously described for other types of biological structures such as naturally occurring cellulose networks and actin networks. We propose that the RSS could play a key role on the way jumbo squids withstand hydrostatic pressure. The results presented here confirm that this phenomenon occurs in a wider number of materials than previously thought, all of them exhibiting different size scales as well as physical conformation. PMID:24582216

  10. Trace element concentrations in the top predator jumbo squid (Dosidicus gigas) from the Gulf of California.

    Science.gov (United States)

    Raimundo, Joana; Vale, Carlos; Rosa, Rui

    2014-04-01

    Jumbo (or Humboldt) squid, Dosidicus gigas, is a large jet-propelled top oceanic predator off the Eastern Pacific. The present study reports, for the first time, concentrations of V, Cr, Mn, Co, Ni, Cu, Zn, As, Se, Cd and Pb in gills, mantle and digestive gland of this powerful pelagic squid in the Gulf of California. Zinc and Cu were the most abundant elements. All elements, with the exception of As, were largely stored in digestive gland; particularly Cd that reached concentrations between 57 and 509 µg g(-1). Significant relationships between tissues were found for Co (digestive gland-gills), As (gills-mantle) and Cd (digestive gland-mantle). Proportionality of Cd concentrations between mantle and digestive gland suggested that detoxification capacity by digestive gland was insufficient to avoid the transfer of this element to mantle and other tissues. Nonetheless, Cd concentrations in the mantle were always below the regulatory limit and, therefore lack of constraints for human consumption. On the basis of the fishery landings, one may estimate that up to 1t of Cd can be annually removed by jumbo squid fisheries. PMID:24530735

  11. Behavioral ecology of jumbo squid (Dosidicus gigas) in relation to oxygen minimum zones

    Science.gov (United States)

    Stewart, Julia S.; Field, John C.; Markaida, Unai; Gilly, William F.

    2013-10-01

    Habitat utilization, behavior and food habits of the jumbo or Humboldt squid, Dosidicus gigas, were compared between an area recently inhabited in the northern California Current System (CCS) and a historically established area of residence in the Gulf of California (GOC). Low dissolved oxygen concentrations at midwater depths define the oxygen minimum zone (OMZ), an important environmental feature in both areas. We analyzed vertical diving behavior and diet of D. gigas and hydrographic properties of the water column to ascertain the extent to which squid utilized the OMZ in the two areas. The upper boundary of the OMZ has been shoaling in recent decades in the CCS, and this phenomenon has been proposed to vertically compress the pelagic environment inhabited by aerobic predators. A shoaling OMZ will also bring mesopelagic communities into a depth range with more illumination during daytime, making these organisms more vulnerable to predation by visual predators (i.e. jumbo squid). Because the OMZ in the GOC is considerably shallower than in the CCS, our study provides insight into the behavioral plasticity of jumbo squid and how they may respond to a shoaling OMZ in the CCS. We propose that shoaling OMZs are likely to be favorable to jumbo squid and could be a key indirect factor behind the recent range expansion of this highly migratory predator.

  12. Salting-in effect on muscle protein extracted from giant squid (Dosidicus gigas).

    Science.gov (United States)

    Zhang, Rui; Zhou, Ru; Pan, Weichun; Lin, Weiwei; Zhang, Xiuzhen; Li, Mengya; Li, Jianrong; Niu, Fuge; Li, Ang

    2017-01-15

    The salting-in effect on muscle protein is well-known in food science but hard to explain using conventional theories. Myofibrillar protein extracted from the giant squid (Dosidicus gigas) was selected as a model muscle protein to study this mechanism in KCl solutions. Changes in the secondary structures of myofibrillar protein molecules caused by concentrated salts, particularly in the paramyosin molecule conformation, have been reported. Zeta-potential determinations showed that these secondary structures have modified protein molecule surfaces. The zeta-potential of the myofibrillar protein molecules fell from -7.24±0.82 to -9.99±1.65mV with increasing salt concentration from 0.1 to 0.5M. The corresponding second virial coefficient increased from -85.43±3.8×10(-7) to -3.45±1.3×10(-7) molmLg(-2). The extended law of corresponding states suggests that reduced attractive interactions increase the protein solubility. Solubility measurements in alternating KCl concentrations showed that the conformational change was reversible. PMID:27542474

  13. Hydroacoustic survey of the jumbo squid Dosidicus gigas in the Gulf of California during March and September-October 2010

    OpenAIRE

    Robinson, Carlos J.; Laura Avilés-Díaz; Jaime Gómez-Gutiérrez; César Salinas-Zavala; Susana Camarillo-Coop; Arminda Mejia-Rebollo

    2014-01-01

    The horizontal and vertical distribution and the dorsal mantle length (DML) of the jumbo squid (Dosidicus gigas) were investigated in the Gulf of California (26-33 °N) during March and September-October 2010 using a Simrad EY-60 echosounder (120 kHz split beam transducer) and jig sampling. During March jumbo squids were captured and echo-detected off Santa Rosalía and around and south of the Grandes Islas region, in regions where satellite sea surface temperatures ranged between 16.5 and 18 °...

  14. Age, growth and maturation of jumbo squid Dosidicus gigas (Cephalopoda: Ommastrephidae) from the Gulf of California, México

    OpenAIRE

    Markaida, U.; Quiñonez Velazquez, Casimiro; Nishizaki S., O.

    2004-01-01

    This study describes the age and growth of large specimens of the jumbo squid Dosidicus gigas that supported the fishery in the Gulf of California in 1995-1997. Statoliths of 299 females (10.8-87.5 cm mantle length, ML) and 147 males (17-73.9 cm ML) were read. Assuming a daily rhythm of statolith deposition the smallest female (10.8 cm ML) was 84 days old and the largest (87.5 cm ML) 386 days old. The oldest females were 14-15 months old. The smallest male (17 cm ML) was 135 days old and the ...

  15. Gigantic Cosmic Corkscrew Reveals New Details About Mysterious Microquasar

    Science.gov (United States)

    2004-10-01

    Making an extra effort to image a faint, gigantic corkscrew traced by fast protons and electrons shot out from a mysterious microquasar paid off for a pair of astrophysicists who gained new insights into the beast's inner workings and also resolved a longstanding dispute over the object's distance. Microquasar SS 433 VLA Image of Microquasar SS 433 CREDIT: Blundell & Bowler, NRAO/AUI/NSF (Click on Image for Larger Version) The astrophysicists used the National Science Foundation's Very Large Array (VLA) radio telescope to capture the faintest details yet seen in the plasma jets emerging from the microquasar SS 433, an object once dubbed the "enigma of the century." As a result, they have changed scientists' understanding of the jets and settled the controversy over its distance "beyond all reasonable doubt," they said. SS 433 is a neutron star or black hole orbited by a "normal" companion star. The powerful gravity of the neutron star or black hole draws material from the stellar wind of its companion into an accretion disk of material tightly circling the dense central object prior to being pulled onto it. This disk propels jets of fast protons and electrons outward from its poles at about a quarter of the speed of light. The disk in SS 433 wobbles like a child's top, causing its jets to trace a corkscrew in the sky every 162 days. The new VLA study indicates that the speed of the ejected particles varies over time, contrary to the traditional model for SS 433. "We found that the actual speed varies between 24 percent to 28 percent of light speed, as opposed to staying constant," said Katherine Blundell, of the University of Oxford in the United Kingdom. "Amazingly, the jets going in both directions change their speeds simultaneously, producing identical speeds in both directions at any given time," Blundell added. Blundell worked with Michael Bowler, also of Oxford. The scientists' findings have been accepted by the Astrophysical Journal Letters. SS 433 New VLA

  16. A gigantic nothosaur (Reptilia: Sauropterygia) from the Middle Triassic of SW China and its implication for the Triassic biotic recovery

    Science.gov (United States)

    Liu, Jun; Hu, Shi-Xue; Rieppel, Olivier; Jiang, Da-Yong; Benton, Michael J.; Kelley, Neil P.; Aitchison, Jonathan C.; Zhou, Chang-Yong; Wen, Wen; Huang, Jin-Yuan; Xie, Tao; Lv, Tao

    2014-11-01

    The presence of gigantic apex predators in the eastern Panthalassic and western Tethyan oceans suggests that complex ecosystems in the sea had become re-established in these regions at least by the early Middle Triassic, after the Permian-Triassic mass extinction (PTME). However, it is not clear whether oceanic ecosystem recovery from the PTME was globally synchronous because of the apparent lack of such predators in the eastern Tethyan/western Panthalassic region prior to the Late Triassic. Here we report a gigantic nothosaur from the lower Middle Triassic of Luoping in southwest China (eastern Tethyan ocean), which possesses the largest known lower jaw among Triassic sauropterygians. Phylogenetic analysis suggests parallel evolution of gigantism in Triassic sauropterygians. Discovery of this gigantic apex predator, together with associated diverse marine reptiles and the complex food web, indicates global recovery of shallow marine ecosystems from PTME by the early Middle Triassic.

  17. Blue jets and gigantic jets: transient luminous events between thunderstorm tops and the lower ionosphere

    International Nuclear Information System (INIS)

    An overview of general phenomenology and proposed physical mechanisms of large scale electrical discharges termed 'blue jets' and 'gigantic jets' observed at high altitude in the Earth's atmosphere above thunderstorms is presented. The primary emphasis is placed on summarizing available experimental data on the observed morphological features of upward jet discharges and on the discussion of recently advanced theories describing electrodynamic conditions, which facilitate escape of conventional lightning leaders from thundercloud tops and their upward propagation toward the ionosphere. It is argued that the filamentary plasma structures observed in blue jet and gigantic jet discharges are directly linked to the processes in streamer zones of lightning leaders, scaled by a significant reduction of air pressure at high altitudes.

  18. The evolution of island gigantism and body size variation in tortoises and turtles

    OpenAIRE

    Jaffe, Alexander L.; Slater, Graham J.; Alfaro, Michael E.

    2011-01-01

    Extant chelonians (turtles and tortoises) span almost four orders of magnitude of body size, including the startling examples of gigantism seen in the tortoises of the Galapagos and Seychelles islands. However, the evolutionary determinants of size diversity in chelonians are poorly understood. We present a comparative analysis of body size evolution in turtles and tortoises within a phylogenetic framework. Our results reveal a pronounced relationship between habitat and optimal body size in ...

  19. EL ERYNGIUM ("CARDO" GIGANTE DEL DELTA DEL PARANA Y DE LA MESOPOTAMIA ARGENTINA

    Directory of Open Access Journals (Sweden)

    Troels Myndel Pedersen

    2010-11-01

    Full Text Available Un Eryngium gigante, espectacular por su tamaño y la abundancia donde se presenta, muy común a lo largo de la Mesopotamia argentina, el delta del Río Paraná, y la orilla sur del Río de la Plata, cuya identidad ha sido interpretada de diversas maneras, se describe como una nueva especie, Eryngium mesopotamicum Pedersen

  20. Mixoma gigante de átrio esquerdo Giant left atrial myxoma

    Directory of Open Access Journals (Sweden)

    Juan Francisco Muñoz Cruz

    1998-11-01

    Full Text Available Homem de 65 anos, portador de miocardiopatia dilatada e hipertensão arterial de longa data, com antecedentes de acidente vascular cerebral e que, ao ecocardiograma, apresentou mixoma gigante de átrio esquerdo.A 65 year-old man with dilated cardiomiopathy and long history of high blood pressure and a previous cerebral vascular accident had a giant left atrial myxoma as an echocardiographic finding.

  1. Mixoma gigante de átrio esquerdo Giant left atrial myxoma

    OpenAIRE

    Juan Francisco Muñoz Cruz; Leniel Bairral Dias; João Osório Rodrigues Neto; Sérgio Almeida de Oliveira

    1998-01-01

    Homem de 65 anos, portador de miocardiopatia dilatada e hipertensão arterial de longa data, com antecedentes de acidente vascular cerebral e que, ao ecocardiograma, apresentou mixoma gigante de átrio esquerdo.A 65 year-old man with dilated cardiomiopathy and long history of high blood pressure and a previous cerebral vascular accident had a giant left atrial myxoma as an echocardiographic finding.

  2. Unilateral delayed opercularization in a case of Sotos' syndrome (cerebral gigantism)

    International Nuclear Information System (INIS)

    A case of Sotos' syndrome (cerebral gigantism) is described. Pneumencephalography, performed at the age of 15 days, revealed abnormal separation of the opercula on the right. By comparing the contours with developmental anatomical features of this area it agreed with a foetal development of 24 weeks gestational age. Bilateral carotid angiography was normal. CT showed normal development of the Sylvian area at the age of 27 months. (orig.)

  3. Encefalocele occipital gigante. A propósito de un caso clínico

    Directory of Open Access Journals (Sweden)

    Rafael Prudencio Beltrán

    2002-06-01

    Full Text Available Presentamos un recién nacido con encefalocele occipital gigante, que fue atendido en la unidad de neonatología del Hospital "Jaime Mendoza" de la Caja Nacional de Salud de la ciudad de Sucre. Se presenta este caso clínico por lo inusual de esta patología y se hace una revisión de la literatura al respecto.

  4. Fishery biology of jumbo flying squid Dosidicus gigas off Costa Rica Dome

    Science.gov (United States)

    Chen, Xinjun; Li, Jianghua; Liu, Bilin; Li, Gang; Lu, Huajie

    2014-06-01

    The jumbo flying squid ( Dosidicus gigas) population was surveyed with the help of Chinese squid jigging vessels off the Costa Rica Dome (4°-11°N, 90°-100°W) in 2009 and 2010. The daily catch of D. gigas in the two survey cruises ranged from 0 to 5.5 t and was mostly obtained from the areas bounded by 6°-9°N and 91°-94°W and by 6°30'-7°30'N and 96°-97°W. The sea surface temperature in the areas yielding the most catch ranged from 27.5 to 29°C. The sex ratio of the total catch was 3.75:1 (female: male). The mantle length of the squid ranged from 211 to 355 mm (male) and from 204 to 429 mm (female) with an average of 297.9 and 306.7 mm, respectively. In the relationship of the mantle length (mm) and body weight (g) of the squid, there was no significant difference between sexes. The female and male were at a similar maturity, and most individuals are maturing or have matured with a few females being spent. The size (mantle length) and age at the first sexual maturity were 297 mm and 195 d in females, and less than 211 mm and 130 d in males, respectively. Most of the sampled stomachs (70.6%) had no food remains. The major preys of the squids were fish, cephalopods and crustaceans, with the most abundant Myctophum orientale and D. gigas. The preys in more than 65% of the non-empty sampled stomachs evidenced the cannibalism of D. gigas. The results improved current understanding of the fishery biology of D. gigas off the Costa Rica Dome, which may facilitate the assessment and management of relative fishery resources.

  5. Sequential isotopic signature along gladius highlights contrasted individual foraging strategies of jumbo squid (Dosidicus gigas.

    Directory of Open Access Journals (Sweden)

    Anne Lorrain

    Full Text Available BACKGROUND: Cephalopods play a major role in marine ecosystems, but knowledge of their feeding ecology is limited. In particular, intra- and inter-individual variations in their use of resources has not been adequatly explored, although there is growing evidence that individual organisms can vary considerably in the way they use their habitats and resources. METHODOLOGY/PRINCIPAL FINDINGS: Using δ(13C and δ(15N values of serially sampled gladius (an archival tissue, we examined high resolution variations in the trophic niche of five large (>60 cm mantle length jumbo squids (Dosidicus gigas that were collected off the coast of Peru. We report the first evidence of large inter-individual differences in jumbo squid foraging strategies with no systematic increase of trophic level with size. Overall, gladius δ(13C values indicated one or several migrations through the squid's lifetime (∼8-9 months, during which δ(15N values also fluctuated (range: 1 to 5‰. One individual showed an unexpected terminal 4.6‰ δ(15N decrease (more than one trophic level, thus indicating a shift from higher- to lower-trophic level prey at that time. The data illustrate the high diversity of prey types and foraging histories of this species at the individual level. CONCLUSIONS/SIGNIFICANCE: The isotopic signature of gladii proved to be a powerful tool to depict high resolution and ontogenic variations in individual foraging strategies of squids, thus complementing traditional information offered by stomach content analysis and stable isotopes on metabolically active tissues. The observed differences in life history strategies highlight the high degree of plasticity of the jumbo squid and its high potential to adapt to environmental changes.

  6. Foraging ecology and movement patterns of jumbo squid (Dosidicus gigas) in the California Current System

    Science.gov (United States)

    Field, John C.; Elliger, Carl; Baltz, Ken; Gillespie, Graham E.; Gilly, William F.; Ruiz-Cooley, R. I.; Pearse, Devon; Stewart, Julia S.; Matsubu, William; Walker, William A.

    2013-10-01

    From 2002 to 2010, the jumbo squid (Dosidicus gigas) has been regularly encountered in large numbers throughout the California Current System (CCS). This species, usually found in subtropical waters, could affect coastal pelagic ecosystems and fisheries as both predator and prey. Neither the abundance of jumbo squid nor the optimal ocean conditions in which they flourish are well known. To understand better the potential impacts of this species on both commercial fisheries and on food-web structure we collected nearly 900 specimens from waters of the CCS, covering over 20° of latitude, over a range of depths and seasons. We used demographic information (size, sex, and maturity state) and analyzed stomach contents using morphological and molecular methods to best understand the foraging ecology of this species in different habitats of the CCS. Squid were found to consume a broad array of prey. Prey in offshore waters generally reflected the forage base reported in previous studies (mainly mesopelagic fishes and squids), whereas in more coastal waters (shelf, shelf break and slope habitats) squid foraged on a much broader mix that included substantial numbers of coastal pelagic fishes (Pacific herring and northern anchovy, as well as osmerids and salmonids in northern waters) and groundfish (Pacific hake, several species of rockfish and flatfish). We propose a seasonal movement pattern, based on size and maturity distributions along with qualitative patterns of presence or absence, and discuss the relevance of both the movement and distribution of jumbo squid over space and time. We find that jumbo squid are a generalist predator, which feeds primarily on small, pelagic or mesopelagic micronekton but also on larger fishes when they are available. We also conclude that interactions with and potential impacts on ecosystems likely vary over space and time, in response to both seasonal movement patterns and highly variable year-to-year abundance of the squid themselves.

  7. Comprehensive model of Jumbo squid Dosidicus gigas trophic ecology in the Northern Humboldt current system.

    Science.gov (United States)

    Alegre, Ana; Ménard, Frédéric; Tafur, Ricardo; Espinoza, Pepe; Argüelles, Juan; Maehara, Víctor; Flores, Oswaldo; Simier, Monique; Bertrand, Arnaud

    2014-01-01

    The jumbo squid Dosidicus gigas plays an important role in marine food webs both as predator and prey. We investigated the ontogenetic and spatiotemporal variability of the diet composition of jumbo squid in the northern Humboldt Current system. For that purpose we applied several statistical methods to an extensive dataset of 3,618 jumbo squid non empty stomachs collected off Peru from 2004 to 2011. A total of 55 prey taxa was identified that we aggregated into eleven groups. Our results evidenced a large variability in prey composition as already observed in other systems. However, our data do not support the hypothesis that jumbo squids select the most abundant or energetic taxon in a prey assemblage, neglecting the other available prey. Indeed, multinomial model predictions showed that stomach fullness increased with the number of prey taxa, while most stomachs with low contents contained one or two prey taxa only. Our results therefore question the common hypothesis that predators seek locally dense aggregations of monospecific prey. In addition D. gigas consumes very few anchovy Engraulis ringens in Peru, whereas a tremendous biomass of anchovy is potentially available. It seems that D. gigas cannot reach the oxygen unsaturated waters very close to the coast, where the bulk of anchovy occurs. Indeed, even if jumbo squid can forage in hypoxic deep waters during the day, surface normoxic waters are then required to recover its maintenance respiration (or energy?). Oxygen concentration could thus limit the co-occurrence of both species and then preclude predator-prey interactions. Finally we propose a conceptual model illustrating the opportunistic foraging behaviour of jumbo squid impacted by ontogenetic migration and potentially constrained by oxygen saturation in surface waters. PMID:24465788

  8. The biology and ecology of the jumbo squid Dosidicus gigas (Cephalopoda in Chilean waters: a review

    Directory of Open Access Journals (Sweden)

    Christian M Ibáñez

    2015-07-01

    Full Text Available ABSTRACT. The jumbo squid Dosidicus gigas is the most abundant cephalopod species in the southeastern Pacific Ocean, which supports the biggest cephalopod fishery in the world. Due to its growing economic importance, the population growth and distributional expansion of this squid is being increasingly studied. Nevertheless, some basic features of the biology of D. gigas are still unknown or have been poorly investigated. In this review we summarize the known information regarding the biology and ecology of this species in the southeastern Pacific Ocean; we focus on the Chilean region in order to propose hypotheses and research lines for a better understanding the life history of this organism. Available data on the size structure, reproduction and genetics of D. gigas allows us to propose hypotheses related to the squid's life history traits. Based on the current literature and publications of colleagues, we propose two hypotheses regarding the effect of spatial variation on the life history of D. gigas. Hypothesis 1: Squids mature at large sizes and spawn in oceanic waters with warm temperatures where paralarvae and juveniles develop. Immature squids migrate near shore to feed, grow and mature, and then return to the offshore sites to spawn. Hypothesis 2: Alternatively, juvenile D. gigas in the oceanic zone do not migrate to coastal waters and mature at small sizes compared to individuals living near the coast that mature at larger size and migrate to oceanic waters to spawn. We provide background information about the feeding behavior and parasitism of this species, suggesting that D. gigas is an important trophic link in the southeastern Pacific marine ecosystem. However, more studies on the feeding habits, reproduction and parasite load are needed not only to test hypotheses proposed in this study, but also to advance the overall knowledge of this species.

  9. Comprehensive model of Jumbo squid Dosidicus gigas trophic ecology in the Northern Humboldt current system.

    Directory of Open Access Journals (Sweden)

    Ana Alegre

    Full Text Available The jumbo squid Dosidicus gigas plays an important role in marine food webs both as predator and prey. We investigated the ontogenetic and spatiotemporal variability of the diet composition of jumbo squid in the northern Humboldt Current system. For that purpose we applied several statistical methods to an extensive dataset of 3,618 jumbo squid non empty stomachs collected off Peru from 2004 to 2011. A total of 55 prey taxa was identified that we aggregated into eleven groups. Our results evidenced a large variability in prey composition as already observed in other systems. However, our data do not support the hypothesis that jumbo squids select the most abundant or energetic taxon in a prey assemblage, neglecting the other available prey. Indeed, multinomial model predictions showed that stomach fullness increased with the number of prey taxa, while most stomachs with low contents contained one or two prey taxa only. Our results therefore question the common hypothesis that predators seek locally dense aggregations of monospecific prey. In addition D. gigas consumes very few anchovy Engraulis ringens in Peru, whereas a tremendous biomass of anchovy is potentially available. It seems that D. gigas cannot reach the oxygen unsaturated waters very close to the coast, where the bulk of anchovy occurs. Indeed, even if jumbo squid can forage in hypoxic deep waters during the day, surface normoxic waters are then required to recover its maintenance respiration (or energy?. Oxygen concentration could thus limit the co-occurrence of both species and then preclude predator-prey interactions. Finally we propose a conceptual model illustrating the opportunistic foraging behaviour of jumbo squid impacted by ontogenetic migration and potentially constrained by oxygen saturation in surface waters.

  10. Fishery Biology of Jumbo Flying Squid Dosidicus gigas off Costa Rica Dome

    Institute of Scientific and Technical Information of China (English)

    CHEN Xinjun; LI Jianghua; LIU Bilin; LI Gang; LU Huajie

    2014-01-01

    The jumbo flying squid (Dosidicus gigas) population was surveyed with the help of Chinese squid jigging vessels off the Costa Rica Dome (4˚-11˚N, 90˚-100˚W) in 2009 and 2010. The daily catch of D. gigas in the two survey cruises ranged from 0 to 5.5 t and was mostly obtained from the areas bounded by 6˚-9˚N and 91˚-94˚W and by 6˚30´-7˚30´N and 96˚-97˚W. The sea surface temperature in the areas yielding the most catch ranged from 27.5 to 29℃. The sex ratio of the total catch was 3.75:1 (female:male). The mantle length of the squid ranged from 211 to 355 mm (male) and from 204 to 429 mm (female) with an average of 297.9 and 306.7 mm, respectively. In the relationship of the mantle length (mm) and body weight (g) of the squid, there was no significant dif-ference between sexes. The female and male were at a similar maturity, and most individuals are maturing or have matured with a few females being spent. The size (mantle length) and age at the first sexual maturity were 297 mm and 195 d in females, and less than 211 mm and 130 d in males, respectively. Most of the sampled stomachs (70.6%) had no food remains. The major preys of the squids were fish, cephalopods and crustaceans, with the most abundant Myctophum orientale and D. gigas. The preys in more than 65%of the non-empty sampled stomachs evidenced the cannibalism of D. gigas. The results improved current understanding of the fishery biology of D. gigas off the Costa Rica Dome, which may facilitate the assessment and management of relative fishery re-sources.

  11. Ecological explanations to island gigantism: dietary niche divergence, predation, and size in an endemic lizard.

    Science.gov (United States)

    Runemark, Anna; Sagonas, Kostas; Svensson, Erik I

    2015-08-01

    Although rapid evolution of body size on islands has long been known, the ecological mechanisms behind this island phenomenon remain poorly understood. Diet is an important selective pressure for morphological divergence. Here we investigate if selection for novel diets has contributed to the multiple independent cases of island gigantism in the Skyros wall lizard (Podarcis gaigeae) and if diet, predation, or both factors best explain island gigantism. We combined data on body size, shape, bite force, and realized and available diets to address this. Several lines of evidence suggest that diet has contributed to the island gigantism. The larger islet lizards have relatively wider heads and higher bite performance in relation to mainland lizards than would be expected from size differences alone. The proportions of consumed and available hard prey are higher on islets than mainland localities, and lizard body size is significantly correlated with the proportion of hard prey. Furthermore, the main axis of divergence in head shape is significantly correlated with dietary divergence. Finally, a model with only diet and one including diet and predation regime explain body size divergence equally well. Our results suggest that diet is an important ecological factor behind insular body size divergence, but could be consistent with an additional role for predation. PMID:26405734

  12. Analysis of the tenderisation of jumbo squid (Dosidicus gigas) meat by ultrasonic treatment using response surface methodology.

    Science.gov (United States)

    Hu, Yaqin; Yu, Hiaxia; Dong, Kaicheng; Yang, Shuibing; Ye, Xingqian; Chen, Shiguo

    2014-10-01

    Due to its unique structure, jumbo squid (Dosidicus gigas) meat is sensitive to heat treatment, which makes the traditional squid products taste tough and hard. This study aimed to tenderise jumbo squid meat through ultrasonic treatment. Response surface methodology (RSM) was used to predict the tenderising effect of various treatment conditions. According to the results of RSM, the optimal conditions appeared to be a power of 186.9 W, a frequency of 25.6 kHz, and a time of 30.8 min, and the predicted values of flexibility and firmness under these optimal conditions were 2.40 mm and 435.1 g, respectively. Protein degradation and a broken muscle fibre structure were observed through histological assay and SDS-PAGE, which suggests a satisfactory tenderisation effect. PMID:24799231

  13. Effect of Bovine Plasma Protein on Autolysis and Gelation of Protein Extracted from Giant Squid (Dosidicus gigas Mantle

    Directory of Open Access Journals (Sweden)

    Laura Raquel Marquez-Alvarez

    2015-01-01

    Full Text Available The effect of bovine plasma protein (BPP on the inhibition of autolytic activity and its effect on the gelling properties of a protein concentrate (PC obtained from jumbo squid (Dosidicus gigas mantle were investigated. Sols and gels were prepared from the PC by adding different amounts of BPP (0, 1, and 2%. Dynamic oscillatory measurements indicated that systems with 1% BPP had a higher elastic modulus (G′, in which hydrophobic interactions were favored. Concerning the technological and textural quality of the gels, BPP caused a greater water holding capacity (WHC, force, cohesiveness, and elasticity, probably due to improvement of the electrostatic and hydrophobic interactions during gel formation. Scanning electron microscopy (SEM allowed visualization of the formation of more rigid and ordered gels with less porosity when BPP was added. Therefore, the addition of BPP improved the gelling capacity of proteins extracted from giant squid.

  14. Conformational changes in proteins recovered from jumbo squid (Dosidicus gigas) muscle through pH shift washing treatments.

    Science.gov (United States)

    Cortés-Ruiz, Juan A; Pacheco-Aguilar, Ramón; Ramírez-Suárez, Juan C; Lugo-Sánchez, Maria E; García-Orozco, Karina D; Sotelo-Mundo, Rogerio R; Peña-Ramos, Aida

    2016-04-01

    Conformational and thermal-rheological properties of acidic (APC) and neutral (NPC) protein concentrates were evaluated and compared to those of squid (Dosidicus gigas) muscle proteins (SM). Surface hydrophobicity, sulfhydryl status, secondary structure profile, differential scanning calorimetry and oscillatory dynamic rheology were used to evaluate the effect of treatments on protein properties. Acidic condition during the washing process (APC) promoted structural and conformational changes in the protein present in the concentrate produced. These changes were enhanced during the heat setting of the corresponding sol. Results demonstrate that washing squid muscle under the proposed acidic conditions is a feasible technological alternative for squid-based surimi production improving its yield and gel-forming ability. PMID:26593553

  15. Metabolic physiology of the Humboldt squid, Dosidicus gigas: Implications for vertical migration in a pronounced oxygen minimum zone

    Science.gov (United States)

    Rosa, Rui; Seibel, Brad A.

    2010-07-01

    The Humboldt (or jumbo) squid, Dosidicus gigas, is an active predator endemic to the Eastern Pacific that undergoes diel vertical migrations into a pronounced oxygen minimum layer (OML). Here, we investigate the physiological mechanisms that facilitate these migrations and assess the associated costs and benefits. Exposure to hypoxic conditions equivalent to those found in the OML (∼10 μM O 2 at 10 °C) led to a significant reduction in the squid’s routine metabolic rate (RMR), from 8.9 to 1.6 μmol O 2 g -1 h -1 ( p gigas may repay any oxygen debt accumulated during the daytime. The dive to deeper water may minimize exposure to stressful surface temperatures when most prey have migrated to depth during the daytime. The physiological and ecological strategies demonstrated here may have facilitated the recent range expansion of this species into northern waters where expanding hypoxic zones prohibit competing top predators.

  16. Immune response of cattle against fasciolopsis induced by inoculation of irradiated metacercariae of fasciola gigantic

    International Nuclear Information System (INIS)

    An experiment was carried out to study the immune response of cattle against fasciolopsis induced by inoculation of irradiated metacercariae of F. gigantic. Four groups of experimental cattle were used e.g: the first group (Vp) were inoculated by the unirradiated metacercariae as a positive control, the second group (Vi) were once inoculated with irradiated metacercariae and then challenged with the infected metacercariae three weeks later, the third group (Vii) were twice inoculated with irradiated metacercariae and then challenged with the infected metacercariae three weeks later, while the forth group (Vn), the negative control without any inoculation of metacercariae. Irradiation dose of 45 Gy was used, and each experimental animal received 700 live’s metacercariae of F. gigantic. The immune response towards fasciolopsis in cattle has been observed in the development of body weight, the number of red blood cells (RBC), the number of white blood cells (WBC), level of haemoglobin (Hb), percentages of Packed cell volume (PCV), the number of eosinophil cells, serological test by ELISA, pathology anatomic inspection and evaluation of the development of worm.The average every measurement of body weight development are Vp = 6 kg, Vi = 9 kg, Vii = 9 kg and Vn = 10 kg. The group of Vi, Vii and Vn were normal of their heart, but the group of Vp was disorder. The group of Vi, Vii and Vn were negative of adult worm’s, while the group of Vp was positive of adult worm’s. These results showed that inoculation of irradiated metacercariae F. gigantic could stimulate good immune response which was able to protect against the infectivity of the challenge in cattle. (author)

  17. ESTIMATION OF THE CATCH PER UNIT EFFORT (CPUE) AND MEDIUM SIZE OF GIANT SQUID (DOSIDICUS GIGAS) USING DIFFERENT TYPES OF JIGS IN PERU

    OpenAIRE

    JUAN MANUEL VALLES-MEZA; JOSÉ IANNACONE; MARCO ESPINO; LUIS MARIÁTEGUI

    2013-01-01

    The aim of this study was to estimate catch per unit effort (CPUE) and mean size of the giant squid (Dosidicus gigas) using different types of jigs in the squid jig fishing fleet operating in waters of Peru during December 1999 to December 2000. Detailed information of fishing operations were registered, along with the CPUE, catch, fishing effort, dorsal mantle dorsal length (DML) and other biological variables. The following results were obtained: (1) The number of crowns of jigs alone does ...

  18. Tratamento operatório das bolhas pulmonares gigantes Surgical treatment of giant emphysematous lung bullae

    OpenAIRE

    Marcio Botter; Roberto Saad Júnior; Denise Aparecida Botter; Jorge Henrique Rivabem; Roberto Gonçalves; Vicente Dorgan Neto

    2007-01-01

    OBJETIVOS: A escassez de publicações nacionais a respeito desta doença no Brasil nos motivou a realizar o presente trabalho, cujos objetivos são descrever a evolução histórica e analisar os resultados do tratamento operatório das bolhas enfisematosas gigantes na Santa Casa de São Paulo. MÉTODOS: Avaliamos retrospectivamente, entre janeiro de 1979 a junho de 2005, os prontuários de 83 doentes submetidos a uma entre quatro modalidades operatórias: bulectomia por toracotomia, bulectomia por ciru...

  19. Formación y evolución de planetas gigantes

    Science.gov (United States)

    Benvenuto, O. G.; Brunini, A.

    Presentamos el estado actual del trabajo que estamos realizando en el estudio de la formación de planetas gigantes. Detallamos los algoritmos numéricos necesarios para realizar este tipo de cálculo. Presentamos algunos resultados de la formación de objetos con masas de hasta una docena de veces la del planeta Júpiter, resaltando las principales caracteríticas. Finalmente detallamos los problemas que pensamos abordar en un futuro cercano en este tema de investigación.

  20. Miocarditis de células gigantes que simula un infarto agudo de miocardio

    Directory of Open Access Journals (Sweden)

    Andrea Zappi

    2009-01-01

    Full Text Available La miocarditis de células gigantes (MCG es una entidad rara, de causa desconocida, de probable etiología autoinmune. Puede presentarse como insuficiencia cardíaca refractaria, asociarse con arritmias ventriculares y en otras ocasiones simular un infarto agudo de miocardio. Su pronóstico con frecuencia es ominoso, salvo que se realicen tratamiento inmunosupresor o trasplante cardíaco, este último con elevada recurrencia.REV ARGENT CARDIOL 2009;77:60-62.

  1. Quiste pilonidal gigante en un anciano Giant pilonidal cyst in an elderly man

    OpenAIRE

    Héctor Bell Santos; Marcos Antonio Santos Danger

    2011-01-01

    Se describe el caso clínico de un anciano con quiste pilonidal gigante, cuya información primaria al respecto se obtuvo de la labor de terreno realizada por su médico de familia y anotada en la historia clínica individual del paciente, el cual fue intervenido quirúrgicamente y con éxito en el Servicio de Coloproctología del Hospital General Docente "Dr. Juan Bruno Zayas Alfonso" de Santiago de Cuba en enero de 2010, cuando se efectuó la exéresis total del tumor sin lesionar el recto.A case re...

  2. The effect on infection of irradiated fasciola gigantic (liver flukes) on goats (Capra hircus linn) blood values

    International Nuclear Information System (INIS)

    This experiment was carried out to study the effect of infection Fasciola gigantic irradiated by using 60Co to goat’s blood values. Twenty local male goats, ten to twelve old months, 115-20 kg of body weight were used for this study. The animals were divided into 5 groups consisting of four replications. Three groups received irradiated metacercariae of Fasciola gigantic a using 45, 55 and 65 Gy respectively. One group in the positive control and another one is the negative control. Each goat received 350 metacercariae. The study in was undertaken for 25 weeks. Body weight, Eosinofil, PCV and Hb were measured. These indicated that infectivity reduced on irradiated Fasciola gigantic. In all parameters, among negative control group and three irradiation-groups showed non significant (p>0,05). (author)

  3. Miocarditis de células gigantes: caso de evolución rápida y fatal.

    OpenAIRE

    Martinez Rodriguez, Miguel; Ramos Soler, David; Calatayud Blas, Ana María; Mayordomo Aranda, Empar; Nicolau Ribera, Maria Jesus; Jorda Miñana, Angela; Cerdá Nicolás, Miguel; Llombart Bosch, Antonio

    2006-01-01

    La miocarditis de células gigantes (MCG) es una patología extremadamente infrecuente de origen desconocido y evolución fatal, que presenta histológicamente infiltrado inflamatorio miocárdico con presencia de células multinucleadas gigantes, sin apreciarse formación de granulomas. En el estudio inmunohistoquímico, las CGM expresan el marcador propio de la estirpe macrofágica CD68, siendo negativos para los marcadores musculares desmina y actina. La MCG se ha asociado a diversas entidades au...

  4. 秘鲁鱿鱼(Dosidicus gigas)冻品加工期间肌肉蛋白特性的变化%Changes ,of biochemical properties of muscle protein during the process of Dosidicus gigas frozen goods

    Institute of Scientific and Technical Information of China (English)

    金淼; 周逸; 徐亦及; 唐剑波; 杨文鸽; 徐培芳

    2012-01-01

    Study on the changes of biochemical properties,including the content of myofibrillar protein,total thiol and active thioI,Ca^2+-ATPase activity,textural properties from Dosidicus gigas muscle during the process. The results showed:After processed,the content of myofibrillar protein,total thiol and active thioI,Ca^2+-ATPase activity,springiness declined to 84.58% ,69.95% ,67.69% ,74.12% and 79.67%, respectively. The content of myofibrillar protein decreased obviously during the soaking with deacid agent and the second quick freezing, reduced to 92.08% and 84.58% ,total thiol and active thiol,Ca^2+-ATPase activity,cohusiveness decreased obviously during the soaking with deacid agent. Compared with the raw material,the corresponding indicators reduced to 72.44% ,73.39% ,78.82% and 44.10% respectively. Springiness decreased obviously during the second quick freezing,reduced to 79.67%. During the process of Dosidicus gigas frozen goods,soaking with deacid agent and quick freezing had a great influence on the denaturation of myofibrillar protein from Dosidicus gigas muscle.%以肌原纤维蛋白含量、总巯基和活性巯基含量、Ca^2+-ATPase活性、质构特性为测定指标,研究秘鲁鱿鱼冻品在加工过程中蛋白特性的变化,确定引起秘鲁鱿鱼蛋白变性的主要生产环节。经过5个不同阶段的加工,鱿鱼肌原纤维蛋白含量、总巯基和活性巯基含量、Ca^2+-ATPase活性、弹性分别下降为原材料的84.58%、69.95%和67.69%、74.12%、79.67%:肌原纤维蛋白含量在鱿鱼去酸浸泡及第二次速冻阶段下降幅度较大,分别下降为原材料的92.08%和84.58%:总巯基和活性巯基含量、Ca2+^-ATPase活性、凝聚性在去酸剂浸泡阶段下降幅度最大.分别下降为原材料的72.44%和73.39%、78.82%、44.10%;弹性在第二次速冻后下降幅度最大,下降为原材料的79.67%。在加工过程中,去酸

  5. Familial gigantism

    Directory of Open Access Journals (Sweden)

    Wouter W. de Herder

    2012-01-01

    Full Text Available Familial GH-secreting tumors are seen in association with three separate hereditary clinical syndromes: multiple endocrine neoplasia type 1, Carney complex, and familial isolated pituitary adenomas.

  6. Aspectos radiológicos e epidemiológicos do granuloma central de células gigantes Radiological and epidemiological aspects of central giant cell granuloma

    OpenAIRE

    José Wilson Noleto; Edson Marchiori; Renato Kobler Sampaio; Klaus L. Irion; Felipe Birchal Collares

    2007-01-01

    OBJETIVO: Este estudo teve como objetivo avaliar os principais aspectos radiográficos e epidemiológicos das lesões de células gigantes (granulomas centrais de células gigantes e tumores marrons do hiperparatireoidismo). MATERIAIS E MÉTODOS: A amostra consistiu de 26 lesões de células gigantes diagnosticadas em 22 pacientes divididos em dois grupos, um deles composto por 17 pacientes que não tinham hiperparatireoidismo (grupo A) e o outro formado por cinco pacientes portadores de tal distúrbio...

  7. Gigantic directional asymmetry of luminescence in multiferroic CuB 2O 4

    Science.gov (United States)

    Toyoda, S.; Abe, N.; Arima, T.

    2016-05-01

    In multiferroic materials, luminescence intensities can be direction dependent, i.e., different between the opposite propagating directions of emitted light. However, the effect has not been thought to be used for technological applications, since only small directional asymmetry has been reported so far. Here we show that the effect is robust in multiferroic CuB2O4 . The luminescence intensity changes by about 70 % between the opposite directions of the emission, which is about 100 times larger than the previously reported values. We demonstrate that such a gigantic directional asymmetry of luminescence can be applied to the imaging of canted antiferromagnetic domains. The observation of the effect and its application to magnetic domain imaging are important for a deeper understanding of light-matter interactions as well as technological applications such as optical reading techniques for magnetic memory devices.

  8. Intraspecific competition and high food availability are associated with insular gigantism in a lizard

    Science.gov (United States)

    Pafilis, Panayiotis; Meiri, Shai; Foufopoulos, Johannes; Valakos, Efstratios

    2009-09-01

    Resource availability, competition, and predation commonly drive body size evolution. We assess the impact of high food availability and the consequent increased intraspecific competition, as expressed by tail injuries and cannibalism, on body size in Skyros wall lizards ( Podarcis gaigeae). Lizard populations on islets surrounding Skyros (Aegean Sea) all have fewer predators and competitors than on Skyros but differ in the numbers of nesting seabirds. We predicted the following: (1) the presence of breeding seabirds (providing nutrients) will increase lizard population densities; (2) dense lizard populations will experience stronger intraspecific competition; and (3) such aggression, will be associated with larger average body size. We found a positive correlation between seabird and lizard densities. Cannibalism and tail injuries were considerably higher in dense populations. Increases in cannibalism and tail loss were associated with large body sizes. Adult cannibalism on juveniles may select for rapid growth, fuelled by high food abundance, setting thus the stage for the evolution of gigantism.

  9. "Light" Higgs and warped models: Case for a Gigantic International Hadron Collider

    CERN Document Server

    Soni, Amarjit

    2013-01-01

    The LHC seems to have made a monumental discovery, Higgs-like particle of mass around 125 GeV with properties akin to a Standard Model Higgs. In the context of a warped theory of flavor, which is theoretically very attractive, this suggests Kaluza-Klein particle masses are likely to be above 10 TeV except possibly for a radion. The interpretation of the SM-like Higgs from the perspective of other interesting beyond the SM scenarios is also likely that the relevant scale is higher than accessible to the LHC. In light of these developments, deeper understanding of flavor and other fundamental issues requires a gigantic international hadron collider [GIHC] perhaps with cm energy of $\\approx$ 100 TeV \\cite{2talks}. It is suggested that a {\\it global effort} should be made for constructing this machine for resolving many questions that SM cannot answer.

  10. Gate-tunable gigantic lattice deformation in VO{sub 2}

    Energy Technology Data Exchange (ETDEWEB)

    Okuyama, D., E-mail: okuyama@riken.jp, E-mail: nakano@imr.tohoku.ac.jp, E-mail: iwasa@ap.t.u-tokyo.ac.jp; Hatano, T. [RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198 (Japan); Nakano, M., E-mail: okuyama@riken.jp, E-mail: nakano@imr.tohoku.ac.jp, E-mail: iwasa@ap.t.u-tokyo.ac.jp [RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198 (Japan); Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan); Takeshita, S.; Ohsumi, H.; Tardif, S. [RIKEN SPring-8 Center, Hyogo 679-5148 (Japan); Shibuya, K. [National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8562 (Japan); Yumoto, H.; Koyama, T.; Ohashi, H. [Japan Synchrotron Radiation Research Institute, SPring-8, Hyogo 679-5198 (Japan); Takata, M. [RIKEN SPring-8 Center, Hyogo 679-5148 (Japan); Japan Synchrotron Radiation Research Institute, SPring-8, Hyogo 679-5198 (Japan); Kawasaki, M.; Tokura, Y.; Iwasa, Y., E-mail: okuyama@riken.jp, E-mail: nakano@imr.tohoku.ac.jp, E-mail: iwasa@ap.t.u-tokyo.ac.jp [RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198 (Japan); Quantum-Phase Electronics Center and Department of Applied Physics, University of Tokyo, Tokyo 113-8656 (Japan); Arima, T. [RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198 (Japan); RIKEN SPring-8 Center, Hyogo 679-5148 (Japan); Department of Advanced Materials Science, University of Tokyo, Kashiwa 277-8561 (Japan)

    2014-01-13

    We examined the impact of electric field on crystal lattice of vanadium dioxide (VO{sub 2}) in a field-effect transistor geometry by in-situ synchrotron x-ray diffraction measurements. Whereas the c-axis lattice parameter of VO{sub 2} decreases through the thermally induced insulator-to-metal phase transition, the gate-induced metallization was found to result in a significant increase of the c-axis length by almost 1% from that of the thermally stabilized insulating state. We also found that this gate-induced gigantic lattice deformation occurs even at the thermally stabilized metallic state, enabling dynamic control of c-axis lattice parameter by more than 1% at room temperature.

  11. [A study on feeding ecology and migration patterns of Dosidicus gigas off Peru using stable isotope analysis].

    Science.gov (United States)

    Gong, Yi; Chen, Xin-jun; Li, Yun-kai; Han, Meng-jie

    2015-09-01

    As a pelagic cephalopod and one of the main target species of Chinese distant water fishery, jumbo squids (Dosidicus gigas) play a major role in the marine ecosystems of the eastern Pacific. Understanding the feeding ecology and migration patterns of jumbo squids is of importance for better utilizing the resources. The isotopic signatures of gladius, have been proved to be a powerful tool to reveal high resolution and ontogenic variations in individual foraging strategies of squids; which is an archival tissue with no elemental turnover after formation. In this study, the growth equation of gladius proostracum was established based on the age information determined by statolith. Gladius was cut successionally by the growth curve of gladius proostracum, the stable isotopic values of the gladius profiles were determined, and the feeding ecology and migration patterns of jumbo squids during its growth process were investigated. Results showed that the jumbo squids began to migrate after 180 days of postnatal, and their trophic levels tended to decrease throughout the life span. These results demonstrated the feasibility of using continuous sampling hard tissue to study the feeding ecology and habitat transfer of jumbo squids. PMID:26785574

  12. Age, maturation, and population structure of the Humboldt squid Dosidicus gigas off the Peruvian Exclusive Economic Zones

    Science.gov (United States)

    Liu, Bilin; Chen, Xinjun; Chen, Yong; Tian, Siquan; Li, Jianhua; Fang, Zhou; Yang, Mingxia

    2013-01-01

    Age, maturation and population structure of the Humboldt squid Dosidicus gigas were studied based on random sampling of the Chinese jigging fishery off the Peruvian Exclusive Economic Zones (EEZ) during 2008-2010. Estimated ages ranged from 144 to 633 days, confirming that the squid is a short-lived species with longevity no longer than 2 years. Occurrence of mature females and hatching in each month indicated that Humboldt squid spawned year-round. Back-calculated hatching dates for the samples were from January 22nd, 2008 to April 22nd, 2010 with a peak between January and March. Two size-based and two hatching date-based populations could be defined from mantle length (ML) at maturity and back-calculated hatching dates, respectively. Females matured at a larger size than males, and there was a significant difference in ML at maturity between the two hatching groups ( P <0.05). The waters adjacent to 11°S off the Peruvian EEZ may be a potential spawning ground. This study shows the complexity of the population structure and large variability in key life history parameters in the Humboldt squid off the Peruvian EEZ, which should be considered in the assessment and management of this important resource.

  13. Age, maturation, and population structure of the Humboldt squid Dosidicus gigas off the Peruvian Exclusive Economic Zones

    Institute of Scientific and Technical Information of China (English)

    LIU Bilin; CHEN Xinjun; CHEN Yong; TIAN Siquan; LI Jianhua; FANG Zhou; YANG Mingxia

    2013-01-01

    Age,maturation and population structure of the Humboldt squid Dosidicus gigas were studied based on random sampling of the Chinese jigging fishery off the Peruvian Exclusive Economic Zones (EEZ) during 2008-2010.Estimated ages ranged from 144 to 633 days,confirming that the squid is a short-lived species with longevity no longer than 2 years.Occurrence of mature females and hatching in each month indicated that Humboldt squid spawned year-round.Back-calculated hatching dates for the samples were from January 22nd,2008 to April 22nd,2010 with a peak between January and March.Two size-based and two hatching date-based populations could be defined from mantle length (ML) at maturity and back-calculated hatching dates,respectively.Females matured at a larger size than males,and there was a significant difference in ML at maturity between the two hatching groups (P<0.05).The waters adjacent to 11°S off the Peruvian EEZ may be a potential spawning ground.This study shows the complexity of the population structure and large variability in key life history parameters in the Humboldt squid off the Peruvian EEZ,which should be considered in the assessment and management of this important resource.

  14. The jumbo squid, Dosidicus gigas (Ommastrephidae), living in oxygen minimum zones I: Oxygen consumption rates and critical oxygen partial pressures

    Science.gov (United States)

    Trueblood, Lloyd A.; Seibel, Brad A.

    2013-10-01

    Dosidicus gigas is a large, metabolically active, epipelagic squid known to undertake diel vertical migrations across a large temperature and oxygen gradient in the Eastern Pacific. Hypoxia is known to cause metabolic suppression in D. gigas. However, the precise oxygen level at which metabolic suppression sets in is unknown. Here we describe a novel ship-board swim tunnel respirometer that was used to measure metabolic rates and critical oxygen partial pressures (Pcrit) for adult squids (2-7kg). Metabolic rate measurements were validated by comparison to the activity of the Krebs cycle enzyme, citrate synthase, in mantle muscle tissue (2-17kg). We recorded a mean routine metabolic rate of 5.91μmolg-1h-1 at 10°C and 12.62μmolg-1h-1 at 20°C. A temperature coefficient, Q10, of 2.1 was calculated. D. gigas had Pcrits of 1.6 and 3.8kPa at 10 and 20°C, respectively. Oxygen consumption rate (MO2) varied with body mass (M) according to MO2=11.57M-0.12±0.03 at 10°C. Citrate synthase activity varied with body mass according to Y=9.32M-0.19±0.02.

  15. ESR studies on the thermal decomposition of trimethylamine oxide to formaldehyde and dimethylamine in jumbo squid (Dosidicus gigas) extract.

    Science.gov (United States)

    Zhu, Junli; Jia, Jia; Li, Xuepeng; Dong, Liangliang; Li, Jianrong

    2013-12-15

    The effects of ferrous iron, heating temperature and different additives on the decomposition of trimethylamine oxide (TMAO) to formaldehyde (FA) and dimethylamine (DMA) and generation of free radicals in jumbo squid (Dosidicus gigas) extract during heating were evaluated by electron spin resonance (ESR). The thermal decomposition of TMAO to TMA, DMA and FA and free radical signals was observed in squid extract, whereas no DMA, FA and free radical signals were detected in cod extract or in aqueous TMAO solution in vitro at high temperatures. Significant increase in levels of DMA, FA and radicals intensity were observed in squid extract and TMAO solution in the presence of ferrous iron with increasing temperature. Hydrogen peroxide stimulated the production of DMA, FA and ESR signals in squid extract, while citric acid, trisodium citrate, calcium chloride, tea polyphenols and resveratrol had the opposite effect. Similar ESR spectra of six peaks regarded as amminium radical were detected in the squid extract and TMAO-iron(II) solution, suggesting that the amminium radical was involved in the decomposition of TMAO. PMID:23993561

  16. Chromogenic behaviors of the Humboldt squid (Dosidicus gigas) studied in situ with an animal-borne video package.

    Science.gov (United States)

    Rosen, Hannah; Gilly, William; Bell, Lauren; Abernathy, Kyler; Marshall, Greg

    2015-01-15

    Dosidicus gigas (Humboldt or jumbo flying squid) is an economically and ecologically influential species, yet little is known about its natural behaviors because of difficulties in studying this active predator in its oceanic environment. By using an animal-borne video package, National Geographic's Crittercam, we were able to observe natural behaviors in free-swimming D. gigas in the Gulf of California with a focus on color-generating (chromogenic) behaviors. We documented two dynamic displays without artificial lighting at depths of up to 70 m. One dynamic pattern, termed 'flashing' is characterized by a global oscillation (2-4 Hz) of body color between white and red. Flashing was almost always observed when other squid were visible in the video frame, and this behavior presumably represents intraspecific signaling. Amplitude and frequency of flashing can be modulated, and the phase relationship with another squid can also be rapidly altered. Another dynamic display termed 'flickering' was observed whenever flashing was not occurring. This behavior is characterized by irregular wave-like activity in neighboring patches of chromatophores, and the resulting patterns mimic reflections of down-welled light in the water column, suggesting that this behavior may provide a dynamic type of camouflage. Rapid and global pauses in flickering, often before a flashing episode, indicate that flickering is under inhibitory neural control. Although flashing and flickering have not been described in other squid, functional similarities are evident with other species. PMID:25609785

  17. Production and functional evaluation of a protein concentrate from giant squid (Dosidicus gigas) by acid dissolution and isoelectric precipitation.

    Science.gov (United States)

    Cortés-Ruiz, Juan A; Pacheco-Aguilar, Ramón; Elena Lugo-Sánchez, M; Gisela Carvallo-Ruiz, M; García-Sánchez, Guillermina

    2008-09-15

    A protein concentrate from giant squid (Dosidicus gigas) was produced under acidic conditions and its functional-technological capability evaluated in terms of its gel-forming ability, water holding capacity and colour attributes. Technological functionality of the concentrate was compared with that of squid muscle and a neutral concentrate. Protein-protein aggregates insoluble at high ionic strength (I=0.5M), were detected in the acidic concentrate as result of processing with no preclusion of its gel-forming ability during the sol-to-gel thermal transition. Even though washing under acidic condition promoted autolysis of the myosin heavy chain, the acidic concentrate displayed an outstanding ability to gel giving samples with a gel strength of 455 and 1160gcm at 75% and 90% compression respectively, and an AA folding test grade indicative of high gel strength, elasticity, and cohesiveness. The process proved to be a good alternative for obtaining a functional protein concentrate from giant squid muscle. PMID:26049243

  18. Controlled and in situ target strengths of the jumbo squid Dosidicus gigas and identification of potential acoustic scattering sources.

    Science.gov (United States)

    Benoit-Bird, Kelly J; Gilly, William F; Au, Whitlow W L; Mate, Bruce

    2008-03-01

    This study presents the first target strength measurements of Dosidicus gigas, a large squid that is a key predator, a significant prey, and the target of an important fishery. Target strength of live, tethered squid was related to mantle length with values standardized to the length squared of -62.0, -67.4, -67.9, and -67.6 dB at 38, 70, 120, and 200 kHz, respectively. There were relatively small differences in target strength between dorsal and anterior aspects and none between live and freshly dead squid. Potential scattering mechanisms in squid have been long debated. Here, the reproductive organs had little effect on squid target strength. These data support the hypothesis that the pen may be an important source of squid acoustic scattering. The beak, eyes, and arms, probably via the sucker rings, also play a role in acoustic scattering though their effects were small and frequency specific. An unexpected source of scattering was the cranium of the squid which provided a target strength nearly as high as that of the entire squid though the mechanism remains unclear. Our in situ measurements of the target strength of free-swimming squid support the use of the values presented here in D. gigas assessment studies. PMID:18345820

  19. Tracking habitat and resource use for the jumbo squid Dosidicus gigas : a stable isotope analysis in the Northern Humboldt Current System

    OpenAIRE

    Arguelles, J.; Lorrain, Anne; Cherel, Y; Graco, M.; Tafur, R.; Alegre, A; Espinoza, P.; Taipe, A.; Ayon, P.; Bertrand, Arnaud

    2012-01-01

    To determine the habitat and resource use of Dosidicus gigas in the Northern Humboldt Current System, we analysed carbon and nitrogen stable isotopes of 234 individuals collected during 2008-2010. Large variations in mantle stable isotope ratios were recorded, with values ranging from -19.1 to -15.1 pour mille (delta C-13) and from 7.4 to 20.5 pour mille (delta N-15). Most of the variation was explained by latitude, followed by distance to shelf break for carbon and by squid size for nitrogen...

  20. Population size of the jumbo squid Dosidicus gigas in the central Gulf of California, Mexico, based on mark-recapture data

    OpenAIRE

    Morales Bojorquez, Enrique; Hernández Herrera, Agustin; Nevárez Martínez, Manuel O; Díaz Uribe, Juan Gabriel

    2012-01-01

    The use of mark-recapture data can be an alternative to other methods for estimating abundance of the jumbo squid Dosidicus gigas and can be used when catch-per-unit-effort data applied to depletion models or estimates from survey research are not available. Two mark-recapture events were analyzed in the central Gulf of California, Mexico, during October 2001 and April 2002 to assess the status of jumbo squid. Results from October 2001 yielded a population size of 20.2 million squid with a 95...

  1. The role of the seed coat in the light sensivity in Raphanus sativus L. cv. redondo gigante seeds O papel do tegumento na sensibilidade à luz em sementes de Raphanus sativus L. cv. redondo gigante

    OpenAIRE

    Maura Lúcia Costa Gonçalves; Massanori Takaki

    1997-01-01

    The role of the seed coat in the light sensitivity of seeds of Raphanus sativus L. cv. redondo gigante was analysed by germination tests of intact and naked seeds. Far-red light caused high inhibition of seed germination, while under white and red lights low inhibition was found. Naked seeds presented no light sensitivity with high percentage germination under light and darkness. However, incubation of naked seeds in -0.6MPa polyethylene glycol solution resulted in light inhibition as observe...

  2. 木瓜蛋白酶嫩化秘鲁鱿鱼肉工艺条件的研究%Study on optimization for tenderization conditions of Dosidicus gigas meat by papain

    Institute of Scientific and Technical Information of China (English)

    郑贤孟; 杨文鸽; 徐大伦

    2013-01-01

    Using the shearing force and concentration of soluble protein(CSP) as indexes,the tenderization of Dosidicus gigas meat by papain was studied,and the suitable tenderization conditions of Dosidicus gigas meat were optimizated through single factor and orthogonal experiment.The results indicated that the suitable technological conditions for tenderization of Dosidicus gigas meat were as follows:papain concentration 1%,soaking time 40min,temperature 50℃ and pH7.0.Under these conditions,the shearing force of Dosidicus gigas meat was up to 2060.141g.%以鱿鱼肉的剪切力和可溶性蛋白含量(CSP)为指标,通过单因素和正交实验优化木瓜蛋白酶嫩化秘鲁鱿鱼肉的工艺条件.结果显示秘鲁鱿鱼肉适宜的嫩化条件为:木瓜蛋白酶浓度1%、处理时间40min、温度50℃、pH7.0,在此条件下鱿鱼肉得到嫩化,其剪切力为2060.141g.

  3. Calamares omastréfidos (Cephalopoda, Ommastrephidae).

    OpenAIRE

    Brunetti, N.E.; Ivanovic, M.L.; Elena, B.

    1998-01-01

    An update of the knowledge on the three most important ommastrephid species that inhabit the SW Atlantic: Illex argentinus, Martialia hyadesi and Ommastrephes bartramii, is presented. Up to the moment, only I.argentinus was intensively studied. Its distribution, population structure, reproduction, growth and paralarval development are analyzed, togheter with other aspects of its biology, such as feeding, predators and parasites. Also its utilization for human consmption is considered. Regardi...

  4. Granuloma Central de Células Gigantes - A propósito de um caso clínico

    OpenAIRE

    Joaquim Ramalhão; Pedro Mesquita; Cristina Trigo-Cabral

    2002-01-01

    O Grauloma Central de Células Gigantes é, de acordo com a Organização MNundial de Saúde, uma lesão óssea não neoplásica.Histologicamente, caracteriza-se pela presença de um tecido fibroso, contendo múltiplos focos hemorrágicos e células gigantes multinucleadas. Por vezes, observam-se, atravessando a lesão, trabéculas de osso lamelar no senio do tecido fibroso maduro.Os autores apresentam um caso clínico de um paciente do sexo masculino, de raça caucasiana, com 14 anos de idade. Ao exame intra...

  5. A gigantic nothosaur (Reptilia: Sauropterygia) from the Middle Triassic of SW China and its implication for the Triassic biotic recovery

    OpenAIRE

    Jun Liu; Shi-xue Hu; Olivier Rieppel; Da-yong Jiang; Benton, Michael J.; Kelley, Neil P.; Aitchison, Jonathan C.; Chang-yong Zhou; Wen Wen; Jin-yuan Huang; Tao Xie; Tao Lv

    2014-01-01

    The presence of gigantic apex predators in the eastern Panthalassic and western Tethyan oceans suggests that complex ecosystems in the sea had become re-established in these regions at least by the early Middle Triassic, after the Permian-Triassic mass extinction (PTME). However, it is not clear whether oceanic ecosystem recovery from the PTME was globally synchronous because of the apparent lack of such predators in the eastern Tethyan/western Panthalassic region prior to the Late Triassic. ...

  6. Horizontal movements, vertical-habitat utilization and diet of the jumbo squid ( Dosidicus gigas) in the Pacific Ocean off Baja California Sur, Mexico

    Science.gov (United States)

    Bazzino, Gastón; Gilly, William F.; Markaida, Unai; Salinas-Zavala, César A.; Ramos-Castillejos, Jorge

    2010-07-01

    We deployed four pop-up archival-transmitting (PAT) tags on jumbo squid ( Dosidicus gigas) collected in the Pacific Ocean off the main entrance to Magdalena Bay on the Baja California peninsula in June 2005. This is the first successful deployment of PAT tags on jumbo squid in an area outside the Gulf of California. Summary data were obtained through the ARGOS satellite system for three of the tags; the fourth tag was physically recovered. All of the tagged squid tended to remain on the shallow continental shelf for several days after tagging and then moved offshore into deeper water. Three of the four squid appeared to migrate in a general southerly direction while the fourth remained offshore of Magdalena Bay. All of the squid spent most daylight hours at depths that were associated with the hypoxic oxygen minimum layer, and at night they spent a majority of time in the upper 50 m of the water column. Stomach content analysis and tag temperature-depth data during the first days after tagging revealed that the squid were feeding on pelagic red crabs ( Pleuroncodes planipes) and several larger, neritic fishes over the continental shelf off Magdalena Bay during a seasonal nearshore upwelling. Comparison of our results with those previously collected in the Gulf of California reveal that Dosidicus gigas can vary its behavior and diet to suit local environmental conditions. This adaptability is likely to be an important factor in the ability of D. gigas to invade and colonize new areas.

  7. Metabolic suppression during protracted exposure to hypoxia in the jumbo squid, Dosidicus gigas, living in an oxygen minimum zone.

    Science.gov (United States)

    Seibel, Brad A; Häfker, N Sören; Trübenbach, Katja; Zhang, Jing; Tessier, Shannon N; Pörtner, Hans-Otto; Rosa, Rui; Storey, Kenneth B

    2014-07-15

    The jumbo squid, Dosidicus gigas, can survive extended forays into the oxygen minimum zone (OMZ) of the Eastern Pacific Ocean. Previous studies have demonstrated reduced oxygen consumption and a limited anaerobic contribution to ATP production, suggesting the capacity for substantial metabolic suppression during hypoxic exposure. Here, we provide a more complete description of energy metabolism and explore the expression of proteins indicative of transcriptional and translational arrest that may contribute to metabolic suppression. We demonstrate a suppression of total ATP demand under hypoxic conditions (1% oxygen, PO2 =0.8 kPa) in both juveniles (52%) and adults (35%) of the jumbo squid. Oxygen consumption rates are reduced to 20% under hypoxia relative to air-saturated controls. Concentrations of arginine phosphate (Arg-P) and ATP declined initially, reaching a new steady state (~30% of controls) after the first hour of hypoxic exposure. Octopine began accumulating after the first hour of hypoxic exposure, once Arg-P breakdown resulted in sufficient free arginine for substrate. Octopine reached levels near 30 mmol g(-1) after 3.4 h of hypoxic exposure. Succinate did increase through hypoxia but contributed minimally to total ATP production. Glycogenolysis in mantle muscle presumably serves to maintain muscle functionality and balance energetics during hypoxia. We provide evidence that post-translational modifications on histone proteins and translation factors serve as a primary means of energy conservation and that select components of the stress response are altered in hypoxic squids. Reduced ATP consumption under hypoxia serves to maintain ATP levels, prolong fuel store use and minimize the accumulation of acidic intermediates of anaerobic ATP-generating pathways during prolonged diel forays into the OMZ. Metabolic suppression likely limits active, daytime foraging at depth in the core of the OMZ, but confers an energetic advantage over competitors that must

  8. Jumbo squid (Dosidicus gigas) mantle collagen: extraction, characterization, and potential application in the preparation of chitosan-collagen biofilms.

    Science.gov (United States)

    Uriarte-Montoya, Mario Hiram; Arias-Moscoso, Joe Luis; Plascencia-Jatomea, Maribel; Santacruz-Ortega, Hisila; Rouzaud-Sández, Ofelia; Cardenas-Lopez, Jose Luis; Marquez-Rios, Enrique; Ezquerra-Brauer, Josafat Marina

    2010-06-01

    Collagen-based biomaterials have been widely used due to its binding capabilities. However the properties and potential use of new collagen sources are still under investigation. Fish by-products are an excellent source of collagen. Thus, acid-soluble collagen (ASC) was extracted, and biochemical and physicochemically characterized from one under-utilized specie, jumbo squid (Dosidicus gigas). In addition, commercial chitosan (95-50%)-ASC (5-50%) blend films were successfully prepared by casting, and characterized by infrared spectroscopy (FT-IR) and differential scanning calorimetry (DSC). The molecular masses of the ASC subunits were about 190kDa, 110kDa, and 97kDa, the content of proline and hydroxyproline was 10.9% and 2.8%, respectively. The FT-IR and nuclear magnetic resonance spectra ((1)H NMR) confirmed collagen peptidic crosslinks, and one endothermic peak was found at 119 degrees C. The FT-IR spectrum showed that chitosan and ASC remain linked into the films mainly due to hydrogen bonding. The 85:15 (chitosan:ASC) ratio was selected for its thermal and mechanical analyses. The thermograms of this film indicated the presence of two peaks, one at 87-98 degrees C and the other at 142-182 degrees C. The chitosan:ASC blend produced a transparent and brittle film, with high percentage of elongation at break, and low tensile strength in comparison to chitosan films. D. gigas mantle might be useful as a new source of plasticizer agent in the preparation of biofilms in composites with chitosan. PMID:20097560

  9. Postmortem biochemical behavior of giant squid (Dosidicus gigas) mantle muscle stored in ice and its relation with quality parameters.

    Science.gov (United States)

    Márquez-Ríos, E; Morán-Palacio, E F; Lugo-Sánchez, M E; Ocano-Higuera, V M; Pacheco-Aguilar, R

    2007-09-01

    Several freshness and spoilage indicators were monitored to characterize the postmortem biochemistry of giant squid (Dosidicus gigas) mantle muscle. Squid samples were obtained directly from the sea and kept at 0 degrees C during a 15-d storage period. Data at zero time were obtained from cryogenically frozen samples at time of capture. The adenosine 5'-triphosphate (ATP) degradation followed a different pattern as compared with that from fish species. ATP was almost completely depleted at 24-h postcatch from 6.54 to <1 micromol/g, while at the same time Hx was the predominant catabolite with a concentration of 4 mumol/g, reaching 6.85 micromol/g at day 15. K-value data followed a logarithmic pattern with time instead of a linear one, with no change after day 3, thus reducing its suitability as a freshness index. The coefficient Hx/AMP seems to be an adequate alternative for this purpose due to its constant increment with time. The high NH4Cl content in mantle muscle (461.3 +/- 24.5 mg of NH4(+)/100 g) derived from its physiological importance for the species compromises the use of the distillation step of the TVB-N analysis commonly used as a spoilage index. This fact explains why the initially high value of TVB-N detected in mantle muscle (243.7 mg N/100 g) did not correlate with the initial low TMA-N content (1.5 +/- 0.1 mg/100 g of muscle). The results suggested that under the experimental conditions the shelf life of squid exceeds 15 d. PMID:17995632

  10. Locomotion and behavior of Humboldt squid, Dosidicus gigas, in relation to natural hypoxia in the Gulf of California, Mexico.

    Science.gov (United States)

    Gilly, William F; Zeidberg, Louis D; Booth, J Ashley T; Stewart, Julia S; Marshall, Greg; Abernathy, Kyler; Bell, Lauren E

    2012-09-15

    We studied the locomotion and behavior of Dosidicus gigas using pop-up archival transmitting (PAT) tags to record environmental parameters (depth, temperature and light) and an animal-borne video package (AVP) to log these parameters plus acceleration along three axes and record forward-directed video under natural lighting. A basic cycle of locomotor behavior in D. gigas involves an active climb of a few meters followed by a passive (with respect to jetting) downward glide carried out in a fins-first direction. Temporal summation of such climb-and-glide events underlies a rich assortment of vertical movements that can reach vertical velocities of 3 m s(-1). In contrast to such rapid movements, D. gigas spends more than 80% of total time gliding at a vertical velocity of essentially zero (53% at 0±0.05 m s(-1)) or sinking very slowly (28% at -0.05 to -0.15 m s(-1)). The vertical distribution of squid was compared with physical features of the local water column (temperature, oxygen and light). Oxygen concentrations of ≤20 μmol kg(-1), characteristic of the midwater oxygen minimum zone (OMZ), can influence the daytime depth of squid, but this depends on location and season, and squid can 'decouple' from this environmental feature. Light is also an important factor in determining daytime depth, and temperature can limit nighttime depth. Vertical velocities were compared over specific depth ranges characterized by large differences in dissolved oxygen. Velocities were generally reduced under OMZ conditions, with faster jetting being most strongly affected. These data are discussed in terms of increased efficiency of climb-and-glide swimming and the potential for foraging at hypoxic depths. PMID:22915711

  11. Respiratory evolution facilitated the origin of pterosaur flight and aerial gigantism.

    Directory of Open Access Journals (Sweden)

    Leon P A M Claessens

    Full Text Available Pterosaurs, enigmatic extinct Mesozoic reptiles, were the first vertebrates to achieve true flapping flight. Various lines of evidence provide strong support for highly efficient wing design, control, and flight capabilities. However, little is known of the pulmonary system that powered flight in pterosaurs. We investigated the structure and function of the pterosaurian breathing apparatus through a broad scale comparative study of respiratory structure and function in living and extinct archosaurs, using computer-assisted tomographic (CT scanning of pterosaur and bird skeletal remains, cineradiographic (X-ray film studies of the skeletal breathing pump in extant birds and alligators, and study of skeletal structure in historic fossil specimens. In this report we present various lines of skeletal evidence that indicate that pterosaurs had a highly effective flow-through respiratory system, capable of sustaining powered flight, predating the appearance of an analogous breathing system in birds by approximately seventy million years. Convergent evolution of gigantism in several Cretaceous pterosaur lineages was made possible through body density reduction by expansion of the pulmonary air sac system throughout the trunk and the distal limb girdle skeleton, highlighting the importance of respiratory adaptations in pterosaur evolution, and the dramatic effect of the release of physical constraints on morphological diversification and evolutionary radiation.

  12. Technical treatment options for the mill effluents of the Los Gigantes Complex

    International Nuclear Information System (INIS)

    The Mining/Milling Los Gigantes Complex is located in Cordoba Province, about 100 km to the West of the capital city. The uranium mining and milling activities have been carried out during the period between 1980 and 1990. As result of those activities, mine wastes, low grade ore, sludge, heap leach wastes and liquid effluents have been accumulated in the site. At present, the National Atomic Energy Commission of Argentina is developing the Remediation Project of the site. Within the frame of this Project it is necessary to define the liquid effluent treatment methodology of the liquids accumulated in a pond in order to achieve the proper quality to be released to the environment, according with the national and provincial regulations. In this paper several liquid treatment methods are described. These methods were also developed at the lab scale. Among these we can mention hot and cool alcalinization with barium chloride addition and ion exchange resins treatments. Also a pilot scale assay has been done in the site (about 450 m3) in order to verify the obtained lab scale results. Nevertheless that other assays are yet under developing, the obtained results are reported. (author)

  13. O serviço de enfermagem hospitalar - apresentando este gigante silencioso

    Directory of Open Access Journals (Sweden)

    Gisela Maria Schebella Souto de Moura

    2001-09-01

    Full Text Available O artigo focaliza a importância do serviço de enfermagem nas organizações de saúde, metaforizando sua grandeza com a expressão "gigante" e seu pouco reconhecimento pela comunidade através do termo "silencioso". A abrangência e a complexidade de seu funcionamento é pontual na efetividade dos processos de cuidado em saúde, no entanto, sua estrutura e organização é pouco conhecida pelos demais profissionais de saúde e quase que totalmente desconhecida pela comunidade. O serviço de enfermagem congrega grande contingente de pessoal com diferentes níveis de formação. O planejamento, organização, estrutura e funcionamento deste serviço seguem as diretrizes emanadas da Teoria Geral da Administração e os conhecimentos desta área têm sido cada vez mais utilizados para atingir as metas e objetivos almejados pelas instituições de saúde. O ensaio, contudo, não deixa de abordar questões sobre o foco no cliente e qualidade do atendimento, apontando para a necessidade de repensar o modelo administrativo adotado buscando sempre alternativas sistêmicas e contingenciais.

  14. Change in the immunophenotype of a somatotroph adenoma resulting in gigantism

    Directory of Open Access Journals (Sweden)

    Jayesh P Thawani

    2014-01-01

    Full Text Available Background: Examining the pathologic progression of a pituitary adenoma from the point of a prepubescent child to an adult with gigantism affords us an opportunity to consider why patients may develop secretory or functioning tumors and raises questions about whether therapeutic interventions and surveillance strategies could be made to avoid irreversible phenotypic changes. Case Description: A patient underwent a sublabial transsphenoidal resection for a clinically non-functioning macroadenoma in 1999. He underwent radiation treatment and was transiently given growth hormone (GH supplementation as an adolescent. His growth rapidly traversed several percentiles and he was found to have elevated GH levels. The patient became symptomatic and was taken for a second neurosurgical procedure. Pathology and immunohistochemical staining demonstrated a significantly higher proportion of somatotroph cells and dense granularity; he was diagnosed with a functional somatotroph adenoma. Conclusions: While it is likely that the described observations reflect the manifestations of a functional somatotroph adenoma in development, it is possible that pubertal growth, GH supplementation, its removal, or radiation therapy contributed to the described endocrine and pathologic changes.

  15. Quiste gigante de ovario: presentación de un caso

    Directory of Open Access Journals (Sweden)

    Mario Joel Arroyo Díaz

    2011-11-01

    Full Text Available Los quistes gigantes de ovario son tumoraciones poco frecuentes en las afecciones ginecológicas. Se presenta el caso de una paciente de 62 años de edad, de color de piel blanca, peso 73 kg. que acudió al Hospital General Docente “Enrique Cabrera” refiriendo aumento progresivo de volumen del abdomen, de un año y medio de evolución sin otro síntoma acompañante en su comienzo, pero en los últimos meses le provocaba falta de aire ante los esfuerzos, orinaba con más frecuencia de lo acostumbrado y con falta de apetito. Se le diagnosticó una masa quística dependiente de ovario, por ultrasonografía y Tomografía Axial Computarizada. Se practicó laparotomía y se resecó quiste de ovario izquierdo de 21 kg. de peso. El estudio anatomopatológico ulterior reportó un cistoadenoma mucinoso de ovario con tumor de Brenner asociado.

  16. Futures, fakes and discourses of the gigantic and miniature in ‘The World’ islands, Dubai

    Directory of Open Access Journals (Sweden)

    Pamila Gupta

    2015-11-01

    Full Text Available This article takes the “island” as a key trope in tourism studies, exploring how ideas of culture and nature, as well as those of paradise (lost are central to its interpretation for tourists and tourist industries alike. Increasingly, however, island tourism is blurring the line between geographies of land and water, continent and archipelago, and private and public property. The case of ‘The World’ islands mega project off the coast of Dubai (UAE is used to chart the changing face and future of island tourism, exploring how spectacle, branding and discourses of the gigantic, miniature, and fake, particularly alongside technological mediations on a large-scale, reflect the postmodern neoliberal world of tourism and the liquid times in which we live. Artificial island complexes such as this one function as cosmopolitan ‘non-places’ at the same time that they reflect a resurgence in (British nascent nationalism and colonial nostalgia, all the whilst operating in a sea of ‘junkspace’. The shifting cartography of ‘the island’ is thus mapped out to suggest new forms of place-making and tourism’s evolving relationship to these floating islandscapes.

  17. A gigantic new dinosaur from Argentina and the evolution of the sauropod hind foot.

    Science.gov (United States)

    González Riga, Bernardo J; Lamanna, Matthew C; Ortiz David, Leonardo D; Calvo, Jorge O; Coria, Juan P

    2016-01-01

    Titanosauria is an exceptionally diverse, globally-distributed clade of sauropod dinosaurs that includes the largest known land animals. Knowledge of titanosaurian pedal structure is critical to understanding the stance and locomotion of these enormous herbivores and, by extension, gigantic terrestrial vertebrates as a whole. However, completely preserved pedes are extremely rare among Titanosauria, especially as regards the truly giant members of the group. Here we describe Notocolossus gonzalezparejasi gen. et sp. nov. from the Upper Cretaceous of Mendoza Province, Argentina. With a powerfully-constructed humerus 1.76 m in length, Notocolossus is one of the largest known dinosaurs. Furthermore, the complete pes of the new taxon exhibits a strikingly compact, homogeneous metatarsus--seemingly adapted for bearing extraordinary weight--and truncated unguals, morphologies that are otherwise unknown in Sauropoda. The pes underwent a near-progressive reduction in the number of phalanges along the line to derived titanosaurs, eventually resulting in the reduced hind foot of these sauropods. PMID:26777391

  18. Gigantic ovarian and suprarenal cysts ten years after enucleation of unilateral retinoblastoma

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    Krstić Vera

    2008-01-01

    Full Text Available INTRODUCTION Retinoblastoma (RB is the most common eye tumour in children and is curable. Patients with hereditary RB have increased risk of developing additional tumours, predominantly sarcomas. The published results on the treatment of bilateral RB have shown that 10-15% of patients develop second primary tumours (SPT. Average latent period, e.g. the period from the diagnosis of bilateral RB to the appearance of SPT is 10.4 years. In the literature, the appearance of second benign tumours in patients suffering from unilateral and bilateral RB has not been analyzed separately. However, the size and the location of benign tumours can cause serious complications. CASE OUTLINE We present a 14-year-old female patient. At age 4 years, her left eye was enucleated owing to unilateral RB. In the postoperative period, she did not undergo irradiation, nor did she receive chemotherapy. On her regular ophthalmologic check-up, the patient informed us that her belly was 'swelling' over the past four months. She had no pains or other complaints. The abdomen was significantly above the level of the chest, tense, painless on palpation, with obvious fluctuations. Abdominal echosonography confirmed the presence of a huge multilocular cystic formation, 19×18 cm in diameter, spreading from the pelvis to the epigastrium, and pressing the liver and spleen. A cyst of 4.7 cm in diameter was observed in the upper pole of the left kidney. Both the gigantic cyst of the left ovary (weighing 10300 g and the left suprarenal cyst (weighing 30g were removed. CONCLUSION We report a patient who developed second nonocular tumors (ovarian and suprarenal cysts after successful treatment of unilateral RB. Patients treated for RB (hereditary and non-hereditary should be checked regularly and meticulously. Early recognition of tumours, treatment can prevent possible complications.

  19. Giant retroperitoneal lipoma: a case report Lipoma gigante do retroperitônio: relato de caso

    Directory of Open Access Journals (Sweden)

    Carlos Augusto Real Martinez

    2003-12-01

    Full Text Available BACKGROUND: Retroperitoneal lipoma is an extremely rare neoplasm. AIMS: The authors report a case of giant retroperitoneal lipoma in a 32-year-old white female, with a history of pain and an abdominal mass over a 2-year period. Total abdominal ultrasonography and barium enema showed a large mass located in the retroperitoneal space behind the ascending colon. Laparotomy showed a large encapsulated tumor measuring 20 x 13 x 10 cm and weighing 3.400 g. The histological study revealed a benign neoplasm of fatty cells. CONCLUSION: The patient remains well 17 years after surgery, without recurrentce of the disease.RACIONAL: O lipoma é a neoplasia mesenquimal mais freqüente, raramente localizada no retroperitônio. Na maioria das vezes, o diagnóstico diferencial pré-operatório com os lipossarcomas de baixo grau de malignidade é difícil de ser estabelecido. OBJETIVO: Apresentar um caso de lipoma gigante retroperitoneal em mulher de 32 anos que há 2 anos apresentava história de dor e tumor abdominal palpável. A ultra-sonografia abdominal e o enema opaco mostraram grande massa localizada no retroperitônio, que deslocava o ceco e o cólon ascendente. A laparotomia mostrou tumor encapsulado com 20 x 13 x 10 cm e 3.400 g de peso. O estudo histopatológico mostrou presença de lipoma retroperitonial. A paciente encontra-se bem, sem recidiva da doença, 17 anos após a cirurgia.

  20. Multi-instrumental observations of a positive gigantic jet produced by a winter thunderstorm in Europe

    Science.gov (United States)

    van der Velde, Oscar A.; Bór, József; Li, Jingbo; Cummer, Steven A.; Arnone, Enrico; Zanotti, Ferruccio; Füllekrug, Martin; Haldoupis, Christos; Naitamor, Samir; Farges, Thomas

    2010-12-01

    At 2336:56 UTC on 12 December 2009, a bright gigantic jet (GJ) was recorded by an observer in Italy. Forty-nine additional sprites, elves, halos and two cases of upward lightning were observed that night. The location of the GJ corresponded to a distinct cloud top (-34°C) west of Ajaccio, Corsica. The GJ reached approximately 91 km altitude, with a "trailing jet" reaching 49-59 km, matching with earlier reported GJs. The duration was short at 120-160 ms. This is the first documented GJ which emerged from a maritime winter thunderstorm only 6.5 km tall, showing high cloud tops are not required for initiation of GJs. In the presence of strong vertical wind shear, the meteorological situation was different from typical outbreaks of fall and winter thunderstorms in the Mediterranean. During the trailing jet phase of the GJ, a sprite with halo triggered by a nearby cloud-to-ground lightning flash occurred at a relatively low altitude (revealed this GJ is the first reported to transfer negative charge (approximately 136 C) from the ionosphere to the positively charged origins in the cloud (i.e., a positive cloud-to-ionosphere discharge, +CI), with a large total charge moment change of 11600 C km and a maximum current of 3.3 kA. Early VLF transmitter amplitude perturbations detected concurrently with the GJ confirm the production of large conductivity changes due to electron density enhancements in the D-region of the ionosphere.

  1. Cisto hidático pulmonar gigante: relato de um caso Giant hydatid lung cyst: a case report

    Directory of Open Access Journals (Sweden)

    Roger Klein Moreira

    2001-06-01

    Full Text Available Os autores relatam o caso de um paciente do sexo masculino, com 55 anos de idade, branco, com diagnóstico radiológico e histopatológico pós-cirúrgico de cisto hidático pulmonar gigante. A epidemiologia, fisiopatologia e características radiológicas desta doença são discutidas.The authors report a case of a 55-year-old white male patient with radiological and postsurgical histopathological diagnosis of a giant lung hydatid cyst. The epidemiological, physiopathological and radiological findings of this disease are discussed.

  2. Características hidráulicas de tubos de bambu gigante Hydraulic parameters of bamboo pipes

    OpenAIRE

    José Adolfo de Almeida Neto; Roberto Testezlaf; Edson Eiji Matsura

    2000-01-01

    Tendo em vista a falta de estudos e pesquisas que possibilitem o desenvolvimento de tecnologias para o aproveitamento de bambu gigante (Dendrocalamus giganteus) como conduto de água procurou-se, com este trabalho, verificar a validade das equações de Darcy-Weisbach, Hazen-Williams e Manning, na estimativa da perda de carga em tubulações de bambu submetidos a dois processos de remoção de nós dos colmos: ao método de impacto por lâminas circulares e ao de um dispositivo mecânico desenvolvido es...

  3. Anemia hemolítica autoinmune en un niño con hepatitis de células gigantes

    OpenAIRE

    Jessica Gómez; Kathia Valverde

    2012-01-01

    La asociación de anemia hemolítica autoinmune (AHAI) con hepatitis de células gigantes (HCG) es un trastorno raro en la infancia. Son pocos los casos reportados y la gran mayoría fallecen a pesar de transplante hepático. La AHAI usualmente precede el desarrollo de la afección hepática. El diagnóstico temprano de esta asociación y el inicio de terapia inmunosupresora previene la progresión de la enfermedad.

  4. Combined climate- and prey-mediated range expansion of Humboldt squid (Dosidicus gigas), a large marine predator in the California Current System.

    Science.gov (United States)

    Stewart, Julia S; Hazen, Elliott L; Bograd, Steven J; Byrnes, Jarrett E K; Foley, David G; Gilly, William F; Robison, Bruce H; Field, John C

    2014-06-01

    Climate-driven range shifts are ongoing in pelagic marine environments, and ecosystems must respond to combined effects of altered species distributions and environmental drivers. Hypoxic oxygen minimum zones (OMZs) in midwater environments are shoaling globally; this can affect distributions of species both geographically and vertically along with predator-prey dynamics. Humboldt (jumbo) squid (Dosidicus gigas) are highly migratory predators adapted to hypoxic conditions that may be deleterious to their competitors and predators. Consequently, OMZ shoaling may preferentially facilitate foraging opportunities for Humboldt squid. With two separate modeling approaches using unique, long-term data based on in situ observations of predator, prey, and environmental variables, our analyses suggest that Humboldt squid are indirectly affected by OMZ shoaling through effects on a primary food source, myctophid fishes. Our results suggest that this indirect linkage between hypoxia and foraging is an important driver of the ongoing range expansion of Humboldt squid in the northeastern Pacific Ocean. PMID:24443361

  5. Análise química do bambu-gigante (Dendrocalamus giganteus Wall. ex Munro) em diferentes idades

    OpenAIRE

    Nelson Potenciano Marinho; Silvana Nisgoski; Umberto Klock; Alan Sulato de Andrade; Graciela Inês Bolzon de Muñiz

    2012-01-01

    http://dx.doi.org/10.5902/198050985749O bambu é uma planta monocotiledônea de origem tropical, de rápido crescimento, sendo considerado um importante regenerador ambiental devido ao seu sistema radicular. O Dendrocalamus giganteus é popularmente conhecido por bambu-gigante, sendo uma espécie entouceirante de grande porte, cujos colmos podem variar de 24 a 40 metros de altura, com diâmetros entre 10 e 20 cm. Esse trabalho teve como objetivo analisar quimicamente os colmos do bambu-gigante visa...

  6. Pelletization of seeds of Raphanus sativus L. cv. Redondo Gigante with graphite for germination under water stress conditions

    Directory of Open Access Journals (Sweden)

    Nobel Penteado Freitas

    2000-01-01

    Full Text Available The effect of water stress on germination of radish seeds is dependent on the presence of light. The effect of pelletization of radish seeds with powdered graphite on the tolerance to water stress under light was analysed. White light and far-red lights were filtered by graphite increasing slightly the tolerance of pelleted seeds to water stress of -0.77MPa. Although red light also inhibited seed germination the graphite had no effect. We propose the pelletization of seeds of Raphanus sativus, at least in cv redondo gigante with graphite as a pratice before planting to increase the tolerance to water stress.O efeito do estresse hídrico é dependente da presença de luz em sementes de rabanete. O efeito da peletização com grafite em pó foi analisado. Luz branca e vermelho-extremo são filtradas pelo grafite aumentando parcialmente a tolerância ao estresse hídrico de -0,77MPa em sementes peletizadas. Embora a luz vermelha também iniba a germinação em condições de estresse a peletização não teve efeito. Nós propomos a peletização de sementes de Raphanus saivus L. cv. redondo gigante como uma prática antes do plantio para aumentar a tolerância ao estresse hídrico.

  7. Etiopatogenia de la arteritis de células gigantes Etiopathogenesis of giant cell arteritis

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    J.M. Casas

    2003-04-01

    Full Text Available La arteritis de células gigantes es una vasculitis que afecta a arterias de diámetro medio y ancho, preferentemente aquellas del arco aórtico con distribución extracraneal, pero también la aorta y otras de sus ramas mayores. Se caracteriza por la presencia de infiltrados inflamatorios mononucleares en la proximidad de la lámina elástica interna constituidos por linfocitos y macrófagos, que en aproximadamente algo más del 50% de los casos contienen células gigantes multinucleadas. La morbilidad asociada a esta enfermedad se relaciona con fenómenos de isquemia distales a la estenosis luminal de las arterias inflamadas y en menor medida con la formación de aneurismas por el debilitamiento de la pared arterial. De etiología desconocida, su patogenia es inmune a través de la migración y localización de células T productoras de γ-INF en la capa adventicia de las arterias inflamadas, suponiéndose que éste es el lugar del estímulo inmune por un antígeno aún no identificado. El reclutamiento y activación de macrófagos por esta citocina constituye uno de los puntos más importantes de su patogenia. La destrucción por éstos del tejido elástico arterial es un fenómeno relevante, así como la producción de otros factores promotores de neoangiogénesis y proliferación de la neoíntima, responsable a través de la obliteración de la luz, de las manifestaciones isquémicas de la enfermedad. El proceso se acompaña de una importante repercusión sistémica caracterizada por una fuerte reacción de fase aguda y síntomas generales de enfermedad poco específicos. Por otra parte, un importante porcentaje de los pacientes presentan un cuadro de polimialgia reumática, entidad en histórica y controvertida relación con esta arteritis. En los últimos años se han producido importantes aportaciones al conocimiento de los mecanismos inmunes implicados en su patogenia.Giant cell arteritis is a vasculitis of large and medium size

  8. The role of the seed coat in the light sensivity in Raphanus sativus L. cv. redondo gigante seeds O papel do tegumento na sensibilidade à luz em sementes de Raphanus sativus L. cv. redondo gigante

    Directory of Open Access Journals (Sweden)

    Maura Lúcia Costa Gonçalves

    1997-07-01

    Full Text Available The role of the seed coat in the light sensitivity of seeds of Raphanus sativus L. cv. redondo gigante was analysed by germination tests of intact and naked seeds. Far-red light caused high inhibition of seed germination, while under white and red lights low inhibition was found. Naked seeds presented no light sensitivity with high percentage germination under light and darkness. However, incubation of naked seeds in -0.6MPa polyethylene glycol solution resulted in light inhibition as observed in intact seeds. The analysis of the seed coat transmitted light indicated that the filtered light presented the same photoequilibrium of phytochrome when compared to the white light, with a decrease of only 33% in the light irradiance which reaches the embryo.O papel do tegumento sobre a sensibilidade à luz em sementes de Raphanus sativus L. cv. redondo gigante foi analisado por testes de germinação de sementes intactas e nuas. A luz vermelho-extremo inibiu fortemente a germinação, enquanto as luzes branca e vermelha apresentaram baixa inibição. Por outro lado, sementes nuas não apresentaram sensibilidade à luz, com alta porcentagem de germinação tanto na luz como no escuro. Entretanto, a incubação das sementes nuas em condições de estresse em solução de polietilenoglicol a -0,6MPa, resultou em inibição na luz, como observadas em sementes intactas. A análise da luz transmitida pelo tegumento das sementes indicou que a luz filtrada apresenta o mesmo fotoequilíbrio teórico do fitocromo obtido na luz branca, com um decréscimo em apenas 33% da irradiância que atinge o embrião.

  9. LIDERAZGO, LA COMPETENCIA ESENCIAL QUE TRANSFORMÓ UNA EMPRESA COLOMBIANA EN UN GIGANTE INTERNACIONAL: EL CASO DE CEMENTOS ARGOS

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    HÉCTOR OCHOA DÍAZ

    2011-01-01

    Full Text Available Cementos Argos ha sido catalogado como uno de los gigantes de la industria cementera colombiana por su gran capacidad de consolidación en el mercado nacional y sus estrategias de internacionalización poco convencionales. Esta investigación documenta la experiencia internacional de Argos bajo la perspectiva de las teorías de internacionalización de mayor aceptación en laliteratura internacional, haciendo uso del enfoque metodológico de los estudios de caso. Como resultado se encontró que las estrategias de fidelización,aunadas al rediseño organizacional resultado del liderazgo de la alta gerencia, han sido herramientas vitales para asegurar el crecimiento de la compañía en los mercados local y externo.

  10. Gigantic transverse x-ray magnetic circular dichroism in ultrathin Co in Au/Co/Au(001)

    International Nuclear Information System (INIS)

    Transverse-geometry x-ray magnetic circular dichroism (TXMCD) measurements on Au/Co-staircase/Au(001) reveal the orbital origin of intrinsic in-plane magnetic anisotropy A gigantic TXMCD was successfully observed at the Co L3,2 edges for Co thickness (tC0) in the 2-monolayer regime. A TXMCD-sum-rule analysis shows a remarkable enhancement of an orbital-moment anisotropy (Δmorb) and of an in-plane magnetic dipole moment (m||T). Both Δmorb and m||T exhibit close similarity in tCo dependence, reflecting the in-plane magnetic anisotropy These observations evidence that extremely strong, intrinsic, in-plane magnetic anisotropy originates from the anisotropic orbital part of the wave function, dominating the dipole-dipole-interaction-derived, extrinsic, in-plane magnetic anisotropy.

  11. Quiste mesotelial simple gigante abdomino-pélvico Giant pelvic and abdominal omental cyst. Report of one case

    OpenAIRE

    GUILLERMO BANNURA C; JAIME CONTRERAS P; PAULINA PEÑALOZA M

    2008-01-01

    Se presenta el caso de una mujer de 41 años que consulta por dolor abdominal y pelviano de carácter sordo de 6 semanas de evolución sin compromiso del estado general. Refiere el antecedente de una histerectomía por mioma realizada hace 3 años. La ecotomografía y la TAC de abdomen y pelvis revelan una lesión quística gigante de 15 x 8 x 12 cm que ocupa parte del abdomen y la pelvis. Luego de una resección parcial y marsupialización es referida a cirugía por recidiva precoz del tumor quístico. ...

  12. Selection of anti-browning agents for Dosidicus gigas slice%秘鲁鱿鱼丝褐变抑制剂的筛选

    Institute of Scientific and Technical Information of China (English)

    林丹; 薛勇; 崔宏博; 王超; 薛长湖

    2012-01-01

    In order to select effective and safe anti-browning agents for Dosidicus gigas slice,glucose-Lys system and squid slice extraction-celite system were used as simulation systems to investigate those agents'anti-browning effects on Dosidicus gigas slice,including sodium sulfite,glutathione,cinnamic acid,citric acid,calcium lactate,ferulic,pentasodium tripolyphosphate,compound of ferulic and citric acid,and compound of cinnamic acid and citric acid.And the most effective agents were added in the Dosidicus gigas slice to test its anti-browning capacity.The result indicated that the compound of citric acid and ferulic was the most effective anti-browning agent compared with the others.The compound,in which citric acid at the concentration of 50mmol/L,was the most efficient anti-browning agent during storage at the temperature of 60℃ and the inhibiting browning rate could reach 23% after 4 days.However,its anti-browning capacity did not increase at the presence of ferulic.%建立了糖-赖氨酸与鱿鱼丝浸提液-硅藻土体系两种秘鲁鱿鱼丝褐变的模拟体系,对亚硫酸钠、谷胱甘肽、肉桂酸、柠檬酸、乳酸钙、阿魏酸和多聚磷酸钠这7种褐变抑制剂,以及阿魏酸、肉桂酸与柠檬酸的协同抗褐变作用进行探讨,并将选出的褐变抑制剂应用于秘鲁鱿鱼丝中进行验证。结果表明:在模拟体系中,柠檬酸和阿魏酸的混合物抗褐变作用较为突出。在阿魏酸与柠檬酸的混合褐变抑制剂中,50mmol/L的柠檬酸的添加量在60℃时有效抑制秘鲁鱿鱼丝中的褐变反应,其抗褐变率随反应时间的延长而增大,在反应的第4d可达到23%。此混合物中柠檬酸在抗褐变过程中起主导作用,且在本实验范围内,随着其添加量的增加抗褐变效果增强,而阿魏酸的添加量对总抗褐变效果无明显影响。

  13. Tratamento operatório das bolhas pulmonares gigantes Surgical treatment of giant emphysematous lung bullae

    Directory of Open Access Journals (Sweden)

    Marcio Botter

    2007-06-01

    Full Text Available OBJETIVOS: A escassez de publicações nacionais a respeito desta doença no Brasil nos motivou a realizar o presente trabalho, cujos objetivos são descrever a evolução histórica e analisar os resultados do tratamento operatório das bolhas enfisematosas gigantes na Santa Casa de São Paulo. MÉTODOS: Avaliamos retrospectivamente, entre janeiro de 1979 a junho de 2005, os prontuários de 83 doentes submetidos a uma entre quatro modalidades operatórias: bulectomia por toracotomia, bulectomia por cirurgia torácica videoassistida (CTVA, drenagem de bolha por CTVA e drenagem de bolha com anestesia local, totalizando 92 operações. Os parâmetros analisados foram tempo de internação, complicações pós-operatórias, mortalidade perioperatória e tardia, além de parâmetros clínicos e funcionais pré e pós-operatórios. RESULTADOS: A morbidade foi de 40,2% e mortalidade pós-operatória precoce, de 4,3%. As complicações pós-operatórias tiveram relação com os antecedentes mórbidos dos doentes. Fatores como enfisema pulmonar difuso, múltiplas bolhas e idade não influenciaram nas complicações precoces. Houve melhora da sintomatologia e dos resultados funcionais em 94,5% dos doentes. Não houve recidiva das bolhas operadas. A mortalidade cinco anos após a operação foi de 18,3% e decorreu, principalmente, da progressão clínica do enfisema pulmonar difuso. CONCLUSÃO: Diversas modalidades operatórias foram realizadas para tratar bolhas pulmonares enfisematosas, desde a bulectomia por toracotomia, na fase inicial até a drenagem de bolha com anestesia local e talcagem, o método que preferencialmente realizamos nos dias atuais. Independente do método utilizado, entretanto, não obstante a morbidade relativamente elevada, os resultados pós-operatórios são bastante favoráveis, com baixa mortalidade e incontestável melhora clínico-funcional dos doentes operados.OBJECTIVE: Lack of Brazilian publications regarding this disease

  14. Alkali- or acid-induced changes in structure, moisture absorption ability and deacetylating reaction of β-chitin extracted from jumbo squid (Dosidicus gigas) pens.

    Science.gov (United States)

    Jung, Jooyeoun; Zhao, Yanyun

    2014-01-01

    Alkali- or acid-induced structural modifications in β-chitin from squid (Dosidicus gigas, d'Orbigny, 1835) pens and their moisture absorption ability (MAA) and deacetylating reaction were investigated and compared with α-chitin from shrimp shells. β-Chitin was converted into the α-form after 3h in 40% NaOH or 1-3 h in 40% HCl solution, and α-chitin obtained from NaOH treatment had higher MAA than had native α-chitin, due to polymorphic destructions. In contrast, induced α-chitin from acid treatment of β-chitin had few polymorphic modifications, showing no significant change (P>0.05) in MAA. β-Chitin was more susceptible to alkali deacetylation than was α-chitin, and required a lower concentration of NaOH and shorter reaction time. These results demonstrate that alkali- or acid-treated β-chitin retained high susceptibility toward solvents, which in turn resulted in good biological activity of β-chitosan for use as a natural antioxidant and antimicrobial substance or application as edible coatings and films for various food applications. PMID:24444948

  15. Functional properties of protein from frozen mantle and fin of jumbo squid Dosidicus gigas in function of pH and ionic strength.

    Science.gov (United States)

    Rocha-Estrada, J G; Córdova-Murueta, J H; García-Carreño, F L

    2010-10-01

    Functional properties of protein from mantle and fin of the jumbo squid Dosidicus gigas were explained based on microscopic muscle fiber and protein fractions profiles as observed in SDS-PAGE. Fin has higher content of connective tissue and complex fiber arrangement, and we observed higher hardness of fin gels as expected. Myosin heavy chain (MHC) was found in sarcoplasmic, myofibril and soluble-in-alkali fractions of mantle and only in sarcoplasmic and soluble-in-alkali fractions of fin. An additive effect of salt concentration and pH affected the solubility and foaming properties. Fin and mantle proteins yielded similar results in solubility tests, but significant differences occurred for specific pH and concentrations of salt. Foaming capacity was proportional to solubility; foam stability was also affected by pH and salt concentration. Hardness and fracture strength of fin gels were significantly higher than mantle gels; gels from proteins of both tissues reached the highest level in the folding test. Structural and molecular properties, such as MHC and paramyosin solubility, arrangement of muscle fibers and the content of connective tissue were useful to explain the differences observed in these protein properties. High-strength gels can be formed from squid mantle or fin muscle. Fin displayed similar or better properties than mantle in all tests. PMID:21339164

  16. Tumor de células gigantes del peroné y parálisis del nervio peroneo común

    OpenAIRE

    Liván Peña Marrero; Hefzulla Mohammad Hassan; Haysell López Díaz; Mohmmed Al-Dhubiani; Khled Ali Al-Nozily; Ahmed Abdul Ghani Gawhar

    2013-01-01

    Los tumores del peroné comprenden solamente el 2,5 % de los tumores primarios de los huesos y solo un tercio de ellos son benignos. El tumor de células gigantes es una lesión benigna, pero puede tener un comportamiento localmente agresivo. Se presenta el caso con el propósito de destacar el tratamiento quirúrgico utilizado con éxito ante un tumor de este tipo. Se trata de un paciente de 30 años de edad con diagnóstico imagenológico e histológico de un tumor de células gigantes del extremo pro...

  17. Sotos syndrome (cerebral gigantism): analysis of 8 cases Síndrome de Sotos (gigantismo cerebral): análise de 8 casos

    OpenAIRE

    Débora Gusmão Melo; Angelina Xavier Acosta; Maria Aparecida de Almeida Salles; João Monteiro de Pina-Neto; José Daniel Vieira Castro; Antonio Carlos Santos

    2002-01-01

    Sotos syndrome or cerebral gigantism is characterized by macrocephaly, overgrowth, mental retardation and central nervous system abnormalities. Congenital heart defects may be present. We report 8 patients with this syndrome and relate their clinical features, neuroimaging and echocardiographic findings.A síndrome de Sotos ou gigantismo cerebral é caracterizada por macrocefalia, hipercrescimento, dismorfias faciais típicas, deficiência mental e alterações do sistema nervoso central. Malformaç...

  18. Seesaw nystagmus caused by giant pituitary adenoma: case report Nistagmo em gangorra causado por adenoma pituitário gigante: relato de caso

    Directory of Open Access Journals (Sweden)

    Frederico Castelo Moura

    2006-03-01

    Full Text Available Giant pituitary adenomas are uncommonly large tumors, greater than 4 cm in size that can produces endocrine symptoms, visual loss and cranial nerve palsies. We report the rare occurrence of seesaw nystagmus as the presenting sign of giant pituitary adenoma. A 50-year-old man presented with headache associated with visual loss and seesaw nystagmus. Perimetry revealed bitemporal hemianopia and magnetic resonance imaging showed a giant pituitary adenoma. After surgery, nystagmus disappeared. Our case is relevant in understanding its pathogenesis since it documents seesaw nystagmus in a patient bitemporal hemianopia due to a large tumor but without mesencephalic compression.Adenoma pituitário gigante é um tumor incomum, maior que 4 cm que produz sintomas endócrinos, perda visual e paralisia de nervos cranianos. Relatamos um caso de nistagmo em gangorra como sinal de apresentação de adenoma pituitário gigante. Um paciente de 50 anos, masculino, apresentava cefaléia, perda visual e nistagmo em gangorra. A perimetria revelou hemianopsia bitemporal e a imagem por ressonância magnética demonstrou um adenoma pituitário gigante. Após a cirurgia, o nistagmo desapareceu. Nosso caso é importante na compreensão da fisiopatogenia do nistagmo em gangorra, pois documenta sua ocorrência em paciente com hemianopsia bitemporal decorrente de tumor hipofisário sem compressão mesencefálica.

  19. Análise química do bambu-gigante (Dendrocalamus giganteus Wall. ex Munro em diferentes idades

    Directory of Open Access Journals (Sweden)

    Nelson Potenciano Marinho

    2012-06-01

    Full Text Available http://dx.doi.org/10.5902/198050985749O bambu é uma planta monocotiledônea de origem tropical, de rápido crescimento, sendo considerado um importante regenerador ambiental devido ao seu sistema radicular. O Dendrocalamus giganteus é popularmente conhecido por bambu-gigante, sendo uma espécie entouceirante de grande porte, cujos colmos podem variar de 24 a 40 metros de altura, com diâmetros entre 10 e 20 cm. Esse trabalho teve como objetivo analisar quimicamente os colmos do bambu-gigante visando fornecer informações sobre a sua composição química nas idades de 2 a 6 anos. Os colmos do bambu foram coletados na área Experimental Agrícola do Departamento de Engenharia Mecânica da UNESP-Bauru, onde é realizado o manejo sistemático de diversas espécies de bambu para fins de pesquisas e divulgação dessa planta. Foram retiradas amostras da base entre bambus com idade de 2 a 6 anos de uma mesma touceira, totalizando 5 amostras, com 2 metros de altura cada, colhidas na lua minguante no mês de março. As análises químicas foram feitas com os entrenós, utilizando as normas e procedimentos da TAPPI. A porcentagem média de extrativos em água quente, extrativos em água fria, extrativos totais e teor de cinzas não apresentaram relação direta com a idade. A maior porcentagem de extrativos em água quente, com valor de 12,04%, extrativos em água fria, com 10,25%, e extrativos totais, com 12,91%, foi observada aos 2 anos de idade. A maior porcentagem de cinzas foi obtida aos três anos, com valores de 1,09%. O teor médio de extrativos em NaOH diminui de 25,72% aos dois anos para 20,17% aos seis anos de idade. O mesmo comportamento foi observado para os extrativos em etanol tolueno, diminuindo de 10,91% para 4,61%. O teor médio de lignina não sofreu influência da idade, variando de 22,66 a 24,11%.

  20. Herbivory and body size: allometries of diet quality and gastrointestinal physiology, and implications for herbivore ecology and dinosaur gigantism.

    Directory of Open Access Journals (Sweden)

    Marcus Clauss

    Full Text Available Digestive physiology has played a prominent role in explanations for terrestrial herbivore body size evolution and size-driven diversification and niche differentiation. This is based on the association of increasing body mass (BM with diets of lower quality, and with putative mechanisms by which a higher BM could translate into a higher digestive efficiency. Such concepts, however, often do not match empirical data. Here, we review concepts and data on terrestrial herbivore BM, diet quality, digestive physiology and metabolism, and in doing so give examples for problems in using allometric analyses and extrapolations. A digestive advantage of larger BM is not corroborated by conceptual or empirical approaches. We suggest that explanatory models should shift from physiological to ecological scenarios based on the association of forage quality and biomass availability, and the association between BM and feeding selectivity. These associations mostly (but not exclusively allow large herbivores to use low quality forage only, whereas they allow small herbivores the use of any forage they can physically manage. Examples of small herbivores able to subsist on lower quality diets are rare but exist. We speculate that this could be explained by evolutionary adaptations to the ecological opportunity of selective feeding in smaller animals, rather than by a physiologic or metabolic necessity linked to BM. For gigantic herbivores such as sauropod dinosaurs, other factors than digestive physiology appear more promising candidates to explain evolutionary drives towards extreme BM.

  1. Daily food intake of Kajikia audax (Philippi, 1887 off Cabo San Lucas, Gulf of California, Mexico Tasa de consumo diario de alimento de Kajikia audax (Philippi, 1887 frente a Cabo San Lucas, golfo de California, México

    Directory of Open Access Journals (Sweden)

    Leonardo A Abitia-Cárdenas

    2011-11-01

    Full Text Available The daily food intake rates of the striped marlin, Kajikia audax (Perciformes: Istiophoridae, were estimated using qualitative and quantitative analyses of their trophic spectrum. We analyzed the stomach contents of 505 striped marlin caught by the sport fishing fleet off Cabo San Lucas, Baja California Sur, Mexico, sampled from October 1987 through December 1989. The most important preys were chub mackerel (Scomber japonicus, California pilchard (Sardinops caeruleus, and jumbo squid (Dosidicus gigas; together these represented ~55% of the striped marlin diet. The daily food consumption was estimated to be 2 kg per day, or ~3.6% of the mean body weight of K. audax. The total biomass of the prey consumed by the striped marlin during the 27 months of sampling around Los Cabos was estimated at 24.8 ton, of which the chub mackerel represented ~29% (7.2 ton, California pilchard just under 16% (3.9 ton, and jumbo squid ~10% (2.5 ton. The feeding habits of K. audax are discussed in terms of the distribution of the epipelagic (neritic and oceanic zones, demersal, and benthic prey, confirming that striped marlin migrate vertically and horizontally in search of their food.Se estimó la tasa de consumo diario de alimento del marlín rayado Kajikia audax (Perciformes: Istiophoridae, sobre la base de análisis cualitativos y cuantitativos de su espectro trófico. Se analizó el contenido estomacal de 505 ejemplares capturados por la flota deportiva frente a Cabo San Lucas, Baja California Sur, México muestreados de octubre 1987 a diciembre 1989. Las presas más importantes fueron la macarela del Pacífico (Scomber japonicus, sardina monterrey (Sardinops caeruleus y calamar gigante (Dosidicus gigas, que en conjunto representaron aproximadamente el 55% de la dieta. La tasa de consumo de alimento fue estimado en 2 kg diarios, lo cual representó aproximadamente el 3,6% del peso corporal de K. audax. La biomasa total de presas consumidas por el marlín rayado

  2. A comparison of fishery biology of jumbo flying squid, Dosidicus gigas outside three Exclusive Economic Zones in the Eastern Pacific Ocean

    Science.gov (United States)

    Liu, Bilin; Chen, Xinjun; Yi, Qian

    2013-05-01

    Although many studies on the fishery biology of jumbo flying squid, Dosidicus gigas, have been conducted in the coastal areas within Exclusive Economic Zones (EEZs) of various countries due to its commercial and ecological importance, limited biological information is available from waters outside these EEZs. In this paper, we examined D. gigas fishery biology from waters outside Chilean, Peruvian and Costa Rican EEZs, based on the fishery data collected by Chinese jigging vessels during 2006 to 2010. The dominant mantle lengths of D. gigas were 350-450 mm, 250-400 mm and 250-350 mm outside Chilean, Peruvian and Costa Rican EEZs, respectively. Size structure analysis show that a medium-sized group existed mostly in the waters outside the Chilean and Peruvian EEZs, whereas a small-sized group occurred mainly in the waters outside the Costa Rican EEZ. The longevity of the squid outside the Costa Rican EEZ was less than 10 months, while most of those outside Chilean and Peruvian EEZs were about 1-1.5 years and very few large individuals were 1.5-2 years old. A higher percentage of mature individuals existed outside Costa Rican EEZ implying the region as a potential spawning ground, while lower proportions of mature squid outside the Peruvian and Chilean EEZs indicated that spawning may be occurring outside our study area. Spatial differences in sizes at maturity of the squid are thought to be result from different environmental factors especially different temperature and nutrition among the three areas. Stomach-content analysis showed that cannibalism was important in the diet of D. gigas. Stress generated by jigging may increase the incidence of cannibalism.

  3. Food web and fish stock changes in central Chile: comparing the roles of jumbo squid (Dosidicus gigas) predation, the environment, and fisheries

    Science.gov (United States)

    Neira, Sergio; Arancibia, Hugo

    2013-10-01

    We analyzed recent food web and fish stock changes in the central Chile marine ecosystem, comparing the roles of jumbo squid (Dosidicus gigas) as predator, the environment, and fishing. To accomplish this we used food web modeling and the Ecopath with Ecosim software (EwE). The principal fish stocks have experienced wide decadal fluctuations in the past 30 years, including stock collapses of horse mackerel (Trachurus murphyi) and hake (Merluccius gayi), and there was a large influx of jumbo squid during the mid-2000s. We used two EwE models representing the food web off central Chile to test the hypothesis that predation by jumbo squid has been significant in explaining the dynamics of the main fishing resources and other species in the study area. Results indicate that predation by jumbo squid on fish stocks is lower than that of other predators (e.g. hake) and the fishery. Long-term fluctuations (1978-2004) in the biomass of the main fish stocks (as well as other components of the food web) seem to be related to fishing and to variation in primary production, rather than to predation by jumbo squid alone. Jumbo squid seems to play a role as predator rather than prey in the system, but its impacts are low when compared with the impacts of other predators and fishing. Therefore, we conclude that jumbo squid predation on its prey was not the primary force behind the collapse of important fish stocks off central Chile. Future efforts should be directed to better understanding factors that trigger sudden increases in jumbo squid abundance off central Chile, as well as modeling its trophic impacts.

  4. Biases in determining the diet of jumbo squid Dosidicus gigas (D' Orbigny 1835) (Cephalopoda: Ommastrephidae) off southern-central Chile (34°S-40°S)

    Science.gov (United States)

    Ibáñez, Christian M.; Arancibia, Hugo; Cubillos, Luis A.

    2008-12-01

    The diet of jumbo squid ( Dosidicus gigas) off southern-central Chile is described to examine potential biases in the determination of their main prey. Specimens were collected from catches using different fishing gear (jigging, trawl and purse-seine), from July 2003 to January 2004, and from December 2005 to October 2006. The stomach contents were analyzed in terms of frequency of occurrence, number, and weight of prey items and the diet composition was analyzed using Detrended Correspondence Analysis. In the industrial purse-seine fleet for jack mackerel ( Trachurus murphyi), the dominant prey of D. gigas was T. murphyi. In the industrial mid-trawl fishery for Patagonian grenadier ( Macruronus magellanicus), the dominant species in the diet of D. gigas was M. magellanicus. Similarly, Chilean hake ( Merluccius gayi) was the main prey in the diet of D. gigas obtained in the industrial trawl fishery for Chilean hake; and, in both artisanal fisheries (purse-seine for small pelagics and jigging), small pelagic fish and D. gigas were the main prey in the stomach contents of D. gigas. Cannibalism in D. gigas varied between different fleets and probably is related to stress behavior during fishing. The Detrended Correspondence Analysis ordination showed that the main prey in the diet of D. gigas is associated with the target species of the respective fishery. Consequently, biases are associated with fishing gear, leading to an overestimate in the occurrence of the target species in the diet. We recommend analyzing samples from jigging taken at the same time and place where the trawl and purse-seine fleets are operating to avoid this problem, and the application of new tools like stable isotope, heavy metal, and fatty acid signature analyses.

  5. A comparison of fishery biology of jumbo flying squid,Dosidicus gigas outside three Exclusive Economic Zones in the Eastern Pacific Ocean

    Institute of Scientific and Technical Information of China (English)

    LIU Bilin; CHEN Xinjun; YI Qian

    2013-01-01

    Although many studies on the fishery biology of jumbo flying squid,Dosidicus gigas,have been conducted in the coastal areas within Exclusive Economic Zones (EEZs) of various countries due to its commercial and ecological importance,limited biological information is available from waters outside these EEZs.In this paper,we examined D.gigas fishery biology from waters outside Chilean,Peruvian and Costa Rican EEZs,based on the fishery data collected by Chinese jigging vessels during 2006 to 2010.The dominant mantle lengths of D.gigas were 350-450 mm,250-400 mm and 250-350 mm outside Chilean,Peruvian and Costa Rican EEZs,respectively.Size structure analysis show that a medium-sized group existed mostly in the waters outside the Chilean and Peruvian EEZs,whereas a small-sized group occurred mainly in the waters outside the Costa Rican EEZ.The longevity of the squid outside the Costa Rican EEZ was less than 10 months,while most of those outside Chilean and Peruvian EEZs were about 1-1.5 years and very few large individuals were 1.5-2 years old.A higher percentage of mature individuals existed outside Costa Rican EEZ implying the region as a potential spawning ground,while lower proportions of mature squid outside the Peruvian and Chilean EEZs indicated that spawning may be occurring outside our study area.Spatial differences in sizes at maturity of the squid are thought to be result from different environmental factors especially different temperature and nutrition among the three areas.Stomach-content analysis showed that cannibalism was important in the diet of D.gigas.Stress generated by jigging may increase the incidence of cannibalism.

  6. Análisis de la pesquería del jurel Trachurus murphyien el Perú

    Directory of Open Access Journals (Sweden)

    Miguel Ñiquen

    2013-10-01

    Full Text Available La presencia del jurel Trachurus murphyi ha sido registrado en los desembarques de la pesca artesanal en Perú desde 1907. A partir del año 2000, las capturas de T. murphyise ubicaron en el tercer lugar después de la anchoveta Engraulis ringensy el calamar gigante Dosidicus gigas. Las capturas de T. murphyison realizadas por la flota artesanal, industrial cerquera y barcos arrastreros factoría. En el año 2011, la flota industrial cerquera con permiso de pesca para T. murphyien la costa peruana estaba constituida por 62 embarcaciones industriales de acero (30177 m 3 y 42 industriales de madera (3082 m 3 . Las capturas de T. murphyituvieron un notable incremento a partir de 1972, alcanzando sus máximos valores en 1977, 1996-97 y 2001, a los que siguieron años de muy baja disponibilidad que llevó al mínimo registro en las capturas en 2010. Sin embargo en el 2011 se revirtió esta baja disponibilidad y las capturas alcanzaron casi las 260000 toneladas. En el periodo 1972 – 2012 se observó una relación inversa entre los estimados de biomasa acústica del jurel T. murphyiy los desembarques anuales de anchoveta E. ringens. Las capturas mensuales de T. murphyipor la flota industrial y artesanal antes del 2002 fueron altas en la zona norte de Perú (Mancora-Chimbote, mientras que después del 2002 las capturas fueron altas en la zona centro-sur (Huacho-Ilo.

  7. Genetic analysis of durable resistance to Magnaporthe oryzae in the rice accession Gigante Vercelli identified two blast resistance loci.

    Science.gov (United States)

    Urso, Simona; Desiderio, Francesca; Biselli, Chiara; Bagnaresi, Paolo; Crispino, Laura; Piffanelli, Pietro; Abbruscato, Pamela; Assenza, Federica; Guarnieri, Giada; Cattivelli, Luigi; Valè, Giampiero

    2016-02-01

    Rice cultivars exhibiting durable resistance to blast, the most important rice fungal disease provoking up to 30 % of rice losses, are very rare and searching for sources of such a resistance represents a priority for rice-breeding programs. To this aim we analyzed Gigante Vercelli (GV) and Vialone Nano (VN), two temperate japonica rice cultivars in Italy displaying contrasting response to blast, with GV showing a durable and broad-spectrum resistance, whereas VN being highly susceptible. An SSR-based genetic map developed using a GV × VN population segregating for blast resistance identified two blast resistance loci, localized to the long arm of chromosomes 1 and 4 explaining more than 78 % of the observed phenotypic variation for blast resistance. The pyramiding of two blast resistance QTLs was therefore involved in the observed durable resistance in GV. Mapping data were integrated with information obtained from RNA-seq expression profiling of all classes of resistance protein genes (resistance gene analogs, RGAs) and with the map position of known cloned or mapped blast resistance genes to search candidates for the GV resistant response. A co-localization of RGAs with the LOD peak or the marker interval of the chromosome 1 QTL was highlighted and a valuable tool for selecting the resistance gene during breeding programs was developed. Comparative analysis with known blast resistance genes revealed co-positional relationships between the chromosome 1 QTL with the Pi35/Pish blast resistance alleles and showed that the chromosome 4 QTL represents a newly identified blast resistance gene. The present genetic analysis has therefore allowed the identification of two blast resistance loci in the durable blast-resistant rice cultivar GV and tools for molecular selection of these resistance genes. PMID:26141566

  8. NOVOS LETRAMENTOS NA CULTURA DIGITAL: O REMIX VEM PRA RUA - O GIGANTE ACORDOU COMO UM HÍBRIDO

    Directory of Open Access Journals (Sweden)

    Rosivaldo Gomes

    2015-07-01

    Full Text Available A utilização da internet, das mídias e redes sociais digitais e de celulares se constituiu como um diferencial importantíssimo no grande movimento social que mexeu com o País e com as visões sobre ele nas manifestações ocorridas em junho de 2013. Essas mídias e redes sociais digitais (YouTube, Flickr, Facebook, Instagram, Twitter, etc. se constituíram como canais de informação, ambientes comunicacionais, pontos de encontro, enfim, em redes e, às vezes, até em comunidades que facilitaram os relacionamentos entre os que estavam conectados e dispostos a se manifestarem de algum modo. Nessa direção, os novos letramentos digitais e o novo ethos como defendido por Lankshear e Knobel (2007 proporcionaram contribuições significativas para o uso das tecnologias digitais de informação e comunicação na propagação dessas manifestações, e, buscando compreender o modo como esses novos letramentos favoreceram isso, neste artigo buscamos, a partir das noções de hibridismo e intercalação (GARCÍA CANCLINI, 2008 [1989]; BAKHTIN, 2002 [1934-5] e  nas discussões de Lankshear e Knobel (2007; 2008 sobre remix e sobre linguagens hipermidiática e híbrido digital (SANTAELLA, 2003; 2004, realizar uma análise qualitativa do remix digita Vem pra rua - O gigante acordou,  no que diz respeito as técnicas de produção e constituição desse gênero na construção de novos significado, considerando o horizonte espacial e temporal (VOLOCHINOV/BAKHTIN, [1926]1976 nos quais foi produzido

  9. Giant Ovarian Cyst: a Case Report Quiste gigante de ovario: presentación de un caso

    Directory of Open Access Journals (Sweden)

    Mario Joel Arroyo Díaz

    2011-11-01

    Full Text Available The giant cysts ovarian growths are rare in the gynecological conditions. We present the case of a patient of 62 years of age, of white color of the skin, weight 73 kg. He came to the General Teaching Hospital "Enrique Cabrera" referring volume increase progressive on the abdomen for a year and a half of evolution without another symptom companion in its beginning, but in recent months caused her lack of air before the efforts, urinated with more frequent than usual and with a lack of appetite. He was diagnosed with cystic mass dependent on ovary, by ultrasonography and computed axial tomography. The practical laparotomy and was resected ovarian cyst left from 21 kg in weight. The anatomopathological study further reported a mucinous cystadenoma ovarian tumor Brenner associated.Los quistes gigantes de ovario son tumoraciones poco frecuentes en las afecciones ginecológicas. Se presenta el caso de una paciente de 62 años de edad, de color de piel blanca, peso 73 kg. que acudió al Hospital General Docente “Enrique Cabrera” refiriendo aumento progresivo de volumen del abdomen, de un año y medio de evolución sin otro síntoma acompañante en su comienzo, pero en los últimos meses le provocaba falta de aire ante los esfuerzos, orinaba con más frecuencia de lo acostumbrado y con falta de apetito. Se le diagnosticó una masa quística dependiente de ovario, por ultrasonografía y Tomografía Axial Computarizada. Se practicó laparotomía y se resecó quiste de ovario izquierdo de 21 kg. de peso. El estudio anatomopatológico ulterior reportó un cistoadenoma mucinoso de ovario con tumor de Brenner asociado.

  10. What lies beneath: sub-articular long bone shape scaling in eutherian mammals and saurischian dinosaurs suggests different locomotor adaptations for gigantism.

    Directory of Open Access Journals (Sweden)

    Matthew F Bonnan

    Full Text Available Eutherian mammals and saurischian dinosaurs both evolved lineages of huge terrestrial herbivores. Although significantly more saurischian dinosaurs were giants than eutherians, the long bones of both taxa scale similarly and suggest that locomotion was dynamically similar. However, articular cartilage is thin in eutherian mammals but thick in saurischian dinosaurs, differences that could have contributed to, or limited, how frequently gigantism evolved. Therefore, we tested the hypothesis that sub-articular bone, which supports the articular cartilage, changes shape in different ways between terrestrial mammals and dinosaurs with increasing size. Our sample consisted of giant mammal and reptile taxa (i.e., elephants, rhinos, sauropods plus erect and non-erect outgroups with thin and thick articular cartilage. Our results show that eutherian mammal sub-articular shape becomes narrow with well-defined surface features as size increases. In contrast, this region in saurischian dinosaurs expands and remains gently convex with increasing size. Similar trends were observed in non-erect outgroup taxa (monotremes, alligators, showing that the trends we report are posture-independent. These differences support our hypothesis that sub-articular shape scales differently between eutherian mammals and saurischian dinosaurs. Our results show that articular cartilage thickness and sub-articular shape are correlated. In mammals, joints become ever more congruent and thinner with increasing size, whereas archosaur joints remained both congruent and thick, especially in sauropods. We suggest that gigantism occurs less frequently in mammals, in part, because joints composed of thin articular cartilage can only become so congruent before stress cannot be effectively alleviated. In contrast, frequent gigantism in saurischian dinosaurs may be explained, in part, by joints with thick articular cartilage that can deform across large areas with increasing load.

  11. Experiencia del Hospital Universitario Virgen de la Arrixaca en el manejo del tumor óseo de células gigantes. Análisis retrospectivo

    OpenAIRE

    Valcárcel Díaz, Antonio

    2011-01-01

    El Tumor de Células Gigantes es un tumor de comportamiento localmente agresivo y que asienta a nivel óseo próximo a las articulaciones en pacientes jóvenes. La larga trayectoria en el tratamiento de los tumores óseos en el Hospital Universitario Virgen de la Arrixaca y la controversia actual en el diagnóstico y tratamiento de este tumor nos llevó a realizar esta Memoria. Todos los pacientes de la serie fueron sometidos a una completa anamnesis y exploración física y se cuantificaron los inter...

  12. Giant ovarian serous cystadenoma. A case report Cistadenoma seroso gigante de ovario. Presentación de un caso

    Directory of Open Access Journals (Sweden)

    Daniel Olivera Fajardo

    2011-04-01

    Full Text Available Ovarian tumors are not as common as uterus and breast tumors. They are regarded as the third group of women benign and malignant tumors. Ovarian serous cystadenomas arise from the superficial coelomic epithelium and are composed of cystic areas. There are macroscopically small tumors and massive tumors occupying the entire pelvis and even the abdominal cavity. The case of a 57 years old female patient with a history of apparent good health that attended consultation because of abdomen enlargement after a year of evolution is presented. The patient referred also nausea, loss of appetite and abdominal left flank pain. She was treated at the General Surgery Department of the General University Hospital "Dr. Gustavo Aldereguía Lima". Left oophorectomy was performed. Histopathological examination showed a giant serous ovarian cystadenoma. Pos-surgery evolution was satisfactory.Los tumores del ovario no son tan frecuentes como los del útero y los de la mama. Constituyen el tercer grupo de tumores benignos y malignos de la mujer. El cistadenoma seroso de ovario se deriva del epitelio superficial (celómico, formado por áreas quísticas. Hay tumores pequeños macroscópicamente y tumores masivos que ocupan toda la pelvis e incluso la cavidad abdominal. Se presenta el caso de una paciente de 57 años de edad, sexo femenino, con antecedentes aparentes de salud, que acudió a consulta por presentar aumento de volumen de su abdomen, de un año de evolución, acompañado de náuseas, pérdida de apetito y dolor abdominal en flanco izquierdo, la cual fue atendida en el Servicio de Cirugía General del Hospital General Universitario "Dr. Gustavo Aldereguía Lima". Se le realizó anexectomía izquierda. El estudio histopatológico arrojó un cistadenoma seroso gigante de ovario. La evolución posquirúrgica fue satisfactoria.

  13. Bocio multinodular gigante deformante. Presentación de un caso sin síntomas obstructivos

    Directory of Open Access Journals (Sweden)

    Paul Bogucki

    2014-04-01

    Full Text Available Se presenta el caso de un paciente masculino de 50 años, con una tumoración en la parte anterior de cuello de 25 años de evolución, sin síntomas de compresión. Al examen físico se aprecia una glándula tiroides de gran tamaño que deforma el cuello, de superficie lisa y nodular, de aproximadamente 16x12cm. Los estudios de imágenes y de laboratorio confirmaron el diagnóstico. Se practicó una tiroidectomía total, obteniéndose una glándula de 17x12cm. Se identificaron y preservaron ambos nervios laríngeos recurrentes y las glándulas paratiroides. No hubo complicaciones postoperatorias y el resultado estético fue satisfactorio. En conclusión el bocio es una patología común en las zonas con insuficiente aporte de Yodo, donde tiene una incidencia aproximada de 11%. Las estadísticas obtenidas en nuestro hospital se corresponden con lo publicado en la literatura internacional. La variedad gigante es infrecuente, constituyendo una causa de síntomas compresivos y disconformidad estética, por lo que la cirugía es la indicación terapéutica. Abstract Giant multinodular goiter. A case report with no obstructive symptoms In this report we show a 50 years male patient with a tumor in the anterior part of neck of 25 years of evolution, without symptoms of compression. Physical examination shows a large thyroid gland, which deforms the neck, smooth and nodular, painless to palpation, approximately 16x12cm. Imaging studies and laboratory-confirmed diagnosis of multinodular goiter. A total thyroidectomy was performed, with a gland 17x12cm. Were identified and preserved both recurrent laryngeal nerves and parathyroid glands. There were no postoperative complications and the aesthetic result was satisfactory. In conclusion the goiter is a condition common in areas with insufficient supply of iodine, which has an incidence of approximately 11%. The statistics obtained in our hospital are as published in the international literature to endemic

  14. Nevo melanocítico congénito gigante: presentación de tres casos Giants congenital melanocytic nevus: Report of three cases

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    V Estrella

    Full Text Available Los Nevos Melanocíticos Congénitos (NMC son lesiones pigmentarias, que pueden aparecer en el nacimiento, aunque hay casos comunicados hasta el primer año de vida (Nevo Melanocítico Congénito Tardío. Presentan ciertas características clínicas y evolutivas de gran importancia: el compromiso estético de las formas gigantes, la asociación con melanocitosis meníngea y su transformación maligna de la lesión cutánea o meníngea. Presentamos tres casos de nevos melanocíticos congénitos gigantes. Cabe destacar, que el objetivo de este artículo es realizar una revisión del tema, orientar al seguimiento y control de los mismos y destacar la dificultad para su tratamiento debido a su gran tamaño.The Congenital Melanocytic Nevus are lesions melanocytic pigmented. Already apparent at birth but there are cases reported to the first year of life (Late Congenital Melanocytic Nevus. Certain features and evolution clinics that are important: the great compromise of aesthetic forms giant, meningeal melanocitosis association and its malignant transformation. We present three cases of Giants Congenital Melanocytic Nevus. It should be noted, that the purpose of this article is a review of the issue and guide the monitoring and control of them and point out the difficult treatment.

  15. 9-10月秘鲁外海茎柔鱼摄食习性的初步研究%Preliminary study on feeding behavior of jumbo flying squid (Dosidicus gigas)off Peru during September and October

    Institute of Scientific and Technical Information of China (English)

    贾涛; 李纲; 陈新军; 刘必林; 钱卫国

    2010-01-01

    茎柔鱼(Dosidicus gigas)是大洋性重要经济头足类之一,在食物链中起着重要作用.通过对2009年9-10月秘鲁外海采集的383尾茎柔鱼胃含物进行分析与研究,以了解调查期间茎柔鱼摄食习性的时空变化特性.研究认为,摄食等级在9-10月份间存在极显著差异(P0.05).但昼夜消化水平差异极显著(P0.05).

  16. ASPECTOS MORFOANATÔMICOS DE FRUTOS DE TOMATEIRO CULTIVAR ÂNGELA GIGANTE, SUBMETIDOS A TRATAMENTOS COM REGULADORES VEGETAIS

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    MARIA BERNARDETE GONÇALVES MARTINS

    1997-01-01

    Full Text Available O presente trabalho teve como finalidade obter dados morfológicos de frutos de tomateiro, Lycopersicon esculentum Mill. `Ângela Gigante', submetidos à ação de reguladores vegetais, em dois ensaios que ocorreram em épocas distintas, em casa de vegetação. As mudas foram selecionadas e transplantadas para vasos com capacidade de 12 L de terra, contendo uma mistura de solo argiloso, areia, matéria orgânica e uma adubação mineral complementar de N, P, K. No segundo ensaio, após o transplante das mudas, além da adubação mineral complementar de N, P, K, efetuaram-se adubações adicionais (fertirrigação. Em ambos os ensaios, quando as plantas atingiram quatro folhas definitivas, realizaram-se as pulverizações com giberelina, GA3 50 mg/L; ácido naftalenacético, NAA 100 mg/L; cloreto (2-cloroetil trimetilamônio, CCC 1.500 mg/L e ácido succínico -2,2 dimetil-hidrazida, SADH 3.000 mg/L. Em relação aos estudos anatômicos, observou-se que os tratamentos com retardadores vegetais (CCC e SADH produziram frutos firmes, com formato tipo barril e ombros salientes; entretanto, em seção transversal, notou-se perda de viscosidade e atrofia de sementes, principalmente nos frutos de plantas tratadas com SADH. Os tratamentos com NAA e GA3 causaram eventual formação de frutos geminados. O tratamento com GA3 apresentou o parênquima do pericarpo com grãos de amido em processo de fragmentação, provavelmente em virtude de o GA3 acelerar a atividade da amilase, afetando o processo de maturação dos frutos e transformando o amido em açúcares. Notaram-se no mesocarpo células com grande quantidade de cristais de oxalato de cálcio sob a forma de areia cristalina. Do tratamento com CCC resultaram frutos suculentos com células da placenta degeneradas, deixando livre grande quantidade de mucilagem. O pericarpo apresentou grande quantidade de grãos de amido composto em toda a extensão, provavelmente por haver um atraso no processo de

  17. 响应面法优化秘鲁鱿鱼(Dosidicus gigas)肌肉盐溶蛋白的提取和凝胶形成条件%Response Surface Optimization of Conditions for Extraction and Gel Preparation of Salt-soluble Proteins from Dosidicus gigas Muscle

    Institute of Scientific and Technical Information of China (English)

    金淼; 周逸; 徐亦及; 唐剑波; 杨文鸽; 张进杰

    2013-01-01

    The effect of extraction and gel preparation conditions of salt-soluble protein from Dosidicus gigas on its gel characteristics were discussed.Using respond surface methodology,the effects of KCl concentration,pH and lowtemperature heating time on the water holding capacity(WHC) and texture characteristics of salt-soluble protein gel from squid meat were studied.Result:(1) The effect of KCl concentration on the WHC of gel was extremely significant; the effect of KCl concentration and low-temperature heating time on the hardness of gel was significant ; both the effect of pH on the WHC and low-temperature heating time on the stickiness of gel were significant.(2) Response surface and contour were graphed with the WHC,hardness and stickiness of gel as the response value,the optimal extraction and gel preparation conditions of salt-soluble proteins from Dosidicus gigas muscle were 0.16mol· L-1 KCl,pH7.10 and 55min of low-temperature heating time,respectively.Experimentally,these conditions produced a salt-soluble protein gel with a WHC of 88.00%,hardness of 510.00 g,stickiness of-11.00 g,confirming the model prediction.%探讨了秘鲁鱿鱼肉盐溶蛋白的提取及凝胶形成条件对其凝胶特性的影响.采用响应面分析法,研究KCl浓度、pH值和低温加热时间对鱿鱼肉盐溶蛋白凝胶保水性和质构特性的影响.结果显示:(1)提取液KCl浓度对保水性影响极其显著,对硬度影响显著;提取液pH值对保水性影响显著;低温加热时间对硬度和粘性影响显著;(2)在分析各因素显著性及其交互作用的基础上,确定鱿鱼肉盐溶蛋白提取和凝胶形成的适宜条件为:KCl浓度0.16 mol·L-1、pH 7.10、40℃加热55min,此时凝胶保水性、硬度、粘性分别达到88.00%、510.00g、-ll.00g,与模型预测值相符.

  18. No More Gigantism

    Science.gov (United States)

    Vohra, B. B.

    1975-01-01

    The food situation in India is critical. It requires the development of both land and water resources, both of which are largely untapped. Ground water is one undeveloped resource that can help alleviate the irrigation problems facing agriculture. More efficient utilization could free millions of hectares of land for cultivation. (MA)

  19. Hernia incisional gigante

    Directory of Open Access Journals (Sweden)

    Ada Arleny Pérez Mayo

    2014-08-01

    Full Text Available Se presentó el caso de paciente femenina de 53 años, intervenida por primera vez en el Hospital Nacional de San Pedro Necta del Departamento de Huehuetenango, en Guatemala, por una hernia incisional de 26 años de padecimiento. Se realizó cuidadosa preparación preoperatoria, que incluyó la antisepsia local de la piel y la aplicación de enemas evacuantes con Cloruro de Sodio al 0,9%. La técnica utilizada consistió en una incisión en Losange alrededor de la cicatriz anterior. Se procedió al cierre del anillo único de más de 10 cm de diámetro y la colocación de malla de polipropileno supra aponeurótica, con sutura no absorbible monofilamentosa. Fue posible el restablecimiento de la capacidad toraco-abdominal, al regresar las asas intestinales contenidas en el saco herniario a la cavidad. Se administró ceftriaxona, como antibiótico profiláctico. La paciente evolucionó satisfactoriamente y la estadía reportada fue de siete días. No ocurrieron complicaciones como seroma, hematoma o infección de la herida quirúrgica, que se atribuyó, en buena medida, a la colocación oportuna de drenajes durante 48 horas del postoperatorio. No hubo recidiva herniaria, con un seguimiento promedio de 19 meses; ni existieron manifestaciones de rechazo, atribuibles al material protésico

  20. Gigantic environmental profit

    International Nuclear Information System (INIS)

    The article presents studies on possible profits and advantages by converting vehicles such as buses and taxis from diesel to gas fuel engines for the environment and human beings in Norway. Some applications for automobiles are mentioned

  1. Lipomas gigantes Giants lipomas

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    Pietro Accetta

    1998-10-01

    Full Text Available The authors report two cases of giants lipomas in the gluteal region with 3,9 and 3,1 kg. They make a brief epidemiological presentation and consider diagnosis and treatment. They believe that CT scan is the best image method, as it provides more information about size and relationship with surrounding structures. They are against biopsies and lipoaspiration but stand up for the total exeresis as the best option of treatment.

  2. Tratamento de hemangioma gigante com interferon alfa: relato de dois casos Treatment of giant hemangioma with interferon-alpha: report of two cases

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    Ana Julia Balau

    2007-12-01

    Full Text Available O objetivo do trabalho é descrever o uso de interferon alfa no tratamento de pacientes com hemangioma gigante. Os autores relatam e analisam dois casos de hemangioma gigante em tratamento com interferon alfa. IBS, 3 anos, em acompanhamento no Ambulatório de Hematologia desde um ano de idade com quadro de lesão angiomatosa em praticamente toda hemiface direita, acompanhada de sangramentos gengivais importantes. Após a realização de exames complementares (Angiorressonância magnética e feito o diagnóstico de hemangioma gigante em face, foi iniciado tratamento com prednisona e, posteriormente, associação com interferon alfa e observada importante melhora do quadro, resultando na diminuição dos episódios de sangramento e no tamanho do tumor. C.N.P., 12 anos, apresentando nódulo em região lateral de joelho esquerdo há 2 anos, com aumento progressivo do tamanho e dor local. Fez uso de prednisona e, sem melhora do quadro, introduzido interferon alfa com regressão importante do tamanho do tumor. O tratamento com interferon alfa deve ser considerado no tratamento de hemangiomas, pois apresenta bons resultados em relação à diminuição do tamanho do tumor e, conseqüentemente, reduz as intercorrências clínicas associadas à sua presença, principalmente os sangramentos.The aim of this study is to describe the treatment using interferon-alpha of giant hemangiomas in children. The authors report two cases of children presenting with giant hemangiomas treated using interferon-alpha and analyze the results. IBS, 3 years-old, has been followed up in Famema Hemathology Service since she was 1 year-old with a tumor on the face and persistent bleeding. After clinical and radiologic evaluations and suggested the diagnosis of giant hemangioma, she started treatment with interferon-alpha. A great clinical improvement was observed a reducing of the number of episodes of bleedings and a decrease in of the tumor size. CNP, 12 years-old, came to

  3. Características hidráulicas de tubos de bambu gigante Hydraulic parameters of bamboo pipes

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    José Adolfo de Almeida Neto

    2000-04-01

    Full Text Available Tendo em vista a falta de estudos e pesquisas que possibilitem o desenvolvimento de tecnologias para o aproveitamento de bambu gigante (Dendrocalamus giganteus como conduto de água procurou-se, com este trabalho, verificar a validade das equações de Darcy-Weisbach, Hazen-Williams e Manning, na estimativa da perda de carga em tubulações de bambu submetidos a dois processos de remoção de nós dos colmos: ao método de impacto por lâminas circulares e ao de um dispositivo mecânico desenvolvido especialmente para este fim, foram estimados os seguintes parâmetros hidráulicos: coeficientes das equações de Hazen-Williams (C, Manning (η, e rugosidade absoluta (ε, estimada através das equações de Hopf e Colebrook. A análise foi realizada sob as seguintes condições operacionais: pressão de trabalho variando de 146,6 a 195,5 kPa, intervalo de vazão de 3 a 12,9 L s-1 e diâmetros de tubulação de 90 a 130 mm, cujos resultados demonstraram que a remoção dos nós pelo processo mecânico proporcionou melhor acabamento no tubo e, conseqüentemente, menor perda de carga por atrito. Os valores obtidos para os parâmetros hidráulicos foram: ε = 0,0013 m (Hopf, ε= 0,0022 m (Colebrook, C = 89 e η= 0,014, para os tubos perfurados mecanicamente, e, C = 43 e η = 0,027 para os tubos perfurados por impacto. Não se constatou diferença significativa na estimativa da perda de carga para os tubos perfurados mecanicamente, pelas equações de Darcy-Weisbach, Hazen-Williams e Manning.The present study reviewed the available information about pressurized and non-pressurized bamboo pipes. A mechanical node-removing process was developed to perforate stalks of giant bamboo (Dendrocalamus giganteus, which allowed an analysis of some hydraulic parameters required by a water conveyance system. Two node-removing processes were studied: a traditional one - a circular steel blade impact method, and a new developed system - the mechanical perforator

  4. Qualidade pós-colheita de couve-flor ‘Teresópolis gigante' tratada com etileno, absorvedor de etileno e 1-metilciclopropeno Postharvest quality of ‘Teresópolis gigante' cauliflower treated with ethylene, ethylene absorbent and 1-methylcyclopropene

    Directory of Open Access Journals (Sweden)

    Auri Brackmann

    2005-12-01

    Full Text Available O objetivo deste trabalho foi de avaliar o efeito da aplicação e absorção de etileno, assim como o uso de 1-metilciclopropeno (1-MCP sobre a qualidade pós-colheita de couve-flor ‘Teresópolis Gigante'. Os tratamentos utilizados foram: armazenamento refrigerado, uso de saches de permanganato de potássio (80g, 1-MCP (1,0 e 0,5µl L-1 e aplicação de etileno (1,0µl L-1. De acordo com os resultados obtidos, a coloração mais verde da cabeça e das folhas foi obtida nos tratamentos com a aplicação de 1-MCP e uso de saches de permanganato de potássio. A menor firmeza da haste foi obtida com a aplicação de etileno. Conclui-se que a aplicação de 1-MCP, assim como o uso de saches de permanganato de potássio promovem a manutenção da cor verde da cabeça e das folhas, assim como o etileno exógeno reduz a firmeza da haste de couve-flor ‘Teresópolis Gigante'.The objective of this work was to analyze the effect of the application and absorption of ethylene, as well as the use of 1-methylcyclopropene (1-MCP concerning the postharvest quality of ‘Teresópolis Gigante' cauliflower. According to the results, the greenest value of the head and of the leaf were got in treatments with application of 1-MCP and use of potassium permanganate. The least stem's firmness was got with the application of ethylene. Then the application of 1-MCP, as well as the use potassium permanganate promoted the maintenance of the green color of the head and of the leaf, as well as exogenous ethylene reduced the stem's firmness of the ‘Teresópolis Gigante' cauliflower.

  5. Granuloma periférico de células gigantes. A propósito de 5 casos y revisión de la literatura

    OpenAIRE

    Chaparro Avendaño, Angie V.; Berini Aytés, Leonardo; Gay Escoda, Cosme

    2005-01-01

    El granuloma periférico de células gigantes (GPCG) es una lesión reactiva benigna relativamente frecuente de la cavidad bucal. Se origina a partir del periostio o de la membrana periodontal tras una irritación o un traumatismo crónico que actúa localmente. Se manifiesta en forma de nódulo de color rojo-púrpura, situado en la encía o en el reborde alveolar edéntulo, preferentemente en la mandíbula. Aparece a cualquier edad, con una mayor incidencia entre la quinta y sexta décadas de la vida, c...

  6. Tumor de células gigantes de bainha de tendão no LCA Tendon sheath giant cells tumor in ACL

    OpenAIRE

    André Pedrinelli; Olavo Pires de Camargo; Ronald Bispo Barreto; Denis Moldenhauer; Ricardo Pedrinelli

    2007-01-01

    Trata-se de um relato de caso de tumor de células gigantes de bainha do ligamento cruzado anterior, uma localização extremamente rara para esse tipo de lesão. O paciente do sexo feminino apresentava dor no joelho, sem relato de trauma anterior. Foi submetido ao exame clínico, ao estudo radiográfico e de ressonância magnética da região. Feita a hipótese diagnóstica de TGC de Bainha, o paciente foi então tratado com ressecção artroscópica do tumor. O diagnóstico foi confirmado com exame anátomo...

  7. Caracterización clínica y radiológica del tumor óseo de células gigantes

    OpenAIRE

    Aponte Barrios, Wilmer Orlando

    2014-01-01

    Objetivo: Describir las características clínicas y radiológicas del tumor óseo de células gigantes (TCG) en un centro de referencia de tumores óseos de Colombia. Metodología: Serie de casos retrospectiva, se recopiló y analizó la información de pacientes tratados en el Instituto Nacional de Cancerología (INC) de 1979 a 2010 con confirmación histológica de TCG y radiografía previa al tratamiento. Resultados: De los 88 pacientes (51 mujeres y 37 hombres), mediana de edad de 30 años (rango...

  8. Aspectos radiológicos e epidemiológicos do granuloma central de células gigantes Radiological and epidemiological aspects of central giant cell granuloma

    Directory of Open Access Journals (Sweden)

    José Wilson Noleto

    2007-06-01

    Full Text Available OBJETIVO: Este estudo teve como objetivo avaliar os principais aspectos radiográficos e epidemiológicos das lesões de células gigantes (granulomas centrais de células gigantes e tumores marrons do hiperparatireoidismo. MATERIAIS E MÉTODOS: A amostra consistiu de 26 lesões de células gigantes diagnosticadas em 22 pacientes divididos em dois grupos, um deles composto por 17 pacientes que não tinham hiperparatireoidismo (grupo A e o outro formado por cinco pacientes portadores de tal distúrbio (grupo B. RESULTADOS: O sexo feminino (72,7% foi o mais acometido. As lesões ocorreram mais freqüentemente na segunda década de vida, com média de idade de 27 anos. A mandíbula (61,5% foi o arco mais envolvido. Radiograficamente, 57,7% das lesões eram multiloculares e 42,3% eram uniloculares com limites definidos. Todas as 26 lesões provocaram expansão óssea, 15,4% produziram reabsorção radicular, 50% causaram deslocamento dentário e 11,5% produziram dor. Na mandíbula, 18,7% das lesões cruzavam a linha média. O grupo A apresentou 66,7% das lesões na mandíbula e o grupo B mostrou igualdade na distribuição das lesões entre os arcos. O grupo A apresentou 66,7% das lesões multiloculares e 33,3%, uniloculares. O grupo B apresentou 62,5% das lesões uniloculares e 37,5%, multiloculares. CONCLUSÃO: As lesões de células gigantes podem manifestar-se, radiograficamente, com um amplo espectro, desde pequenas lesões uniloculares de crescimento lento até extensas lesões multiloculares. Elas apresentam características de benignidade, embora algumas lesões possam demonstrar um comportamento localmente agressivo.OBJECTIVE: The present study was aimed at evaluating main radiological and epidemiological aspects of giant cell lesions (central giant cell granuloma and brown tumors of hyperparathyroidism. MATERIALS AND METHODS: The sample consisted of 26 giant cell lesions diagnosed in 22 patients divided into two groups, one of them

  9. Aneurisma intracraniano gigante em menino de três anos: relato de caso Giant intracranial aneurysm in three years old boy: case report

    OpenAIRE

    Osvaldo Inácio de Tella Jr; João Francisco Crosera; Marco Antonio Herculano; Manoel Antonio de Paiva Neto

    2006-01-01

    Aneurismas cerebrais são raros na faixa etária pediátrica. A apresentação destas lesões difere significativamente em relação á população adulta no que se refere a tamanho, localização e incidência. Relatamos caso de menimo de três anos de idade que apresentou quadro de hemorragia subaracnóidea sem história de infecções ou traumatismos prévios sendo, posteriormente, diagnosticado aneurisma gigante localizado na artéria cerebral média. Foi submetido a tratamento cirúrgico com boa evolução pós-o...

  10. Stock assessment and management of Dosidicus gigas in the Southeast Pacific Ocean with Schaefer model%基于 Schaefer 模型的东南太平洋茎柔鱼资源评估和管理

    Institute of Scientific and Technical Information of China (English)

    许骆良; 陈新军; 汪金涛; 官文江

    2015-01-01

    东南太平洋茎柔鱼(Dosidicus gigas )是世界范围内最重要的经济头足类之一,也是我国鱿钓渔船的重要捕捞对象。本文根据2003—2012年中国大陆的渔业数据和 FAO 统计的东南太平洋茎柔鱼产量数据,利用 Schaefer 模型,基于贝叶斯统计方法,分基准方案和敏感性分析方案对东南太平洋茎柔鱼资源进行评估,并对其管理策略做了风险分析。结果表明,年渔获量和 CPUE 数据为贝叶斯资源评估模型提供了足够多的信息。2003—2012年捕捞死亡率低于目标参考点 F0.1,渔获量小于最大可持续产量,资源量大于目标参考点 Bmsy ,资源状况良好,未遭受过度捕捞。在基准方案下,最大可持续产量为142.9万吨,维持最大可持续产量的资源量为214.7万吨,此时的捕捞死亡率为0.682;在敏感性分析方案下,最大的可持续产量为152.5万吨,维持最大可持续产量的资源量为229.6万吨,此时的捕捞死亡率为0.691。决策分析和风险分析表明,当捕获率设定为0.3以下时,资源能够得到较好的养护,资源崩溃的可能性很低。将捕获率设定在0.3左右是最适的管理策略,此时的持续产量为99万吨左右。%Dosidicus gigas is one of the important economic cephalopod in the world.It is widely distributed in the east of Pacific Ocean.Nowadays the yield of Dosidicus gigas occupies more than 50% of the total yield of squid in China mainland.In 2012 ,the yearly catch in China mainland reached 221.1 thousand tons,the number of fishing vessels are more than 250.It is necessary to assess the stock for making the fishery sustainable.Unfortunately lit-tle work is done in this field.The stock assessment and risk analysis of alternative management strategies for Dosi-dicus gigas in the Southeast Pacific Ocean were carried out by using a Bayesian Schaefer model,in which two sce-narios,standard scenario and

  11. PRELIMINARY STUDY ON FISHERIES BIOLOGY OF DOSIDICUS GIGAS IN THE WATERS NEAR THE EQUATOR OF EASTERN PACIFIC OCEAN%东太平洋赤道附近海域茎柔鱼(Dosidicus gigas)渔业生物学的初步研究

    Institute of Scientific and Technical Information of China (English)

    陈新军; 李建华; 易倩; 刘必林; 杨铭霞; 陆化杰

    2012-01-01

    Based on the samples of 1178 squids in total from Chinese squid jigging vessels near the equator of the eastern Pacific in 2011, the biological characteristics of Dosidicus gigas were studied. The results showed that the range of mantle length was from 201 to 421mm and the average attained 290mm, the dominant mantle length ranged from 260 to 320mm. Body weight was from 200g to 2650g and the average attained 1000g, the dominant body weight ranged from 600 to 1000g. The equation of the relationship between mantle length and body weight was fitted by power exponent. The sexual ratio of female to male was 2.59 : 1. The sexual maturity stage dominated I and II. The length and weight of nidamental gland of D. gigas increased with the growth of gland maturity. And the mantle length of first maturity of females was 397.2mm. The feeding stage dominated 0-1. It can be found that D. gigas near the equator is obvious different from that in the Gulf of California and waters off Chile, Peru and Costa Rica. We can conclude that the population of D. gigas near the equator of the eastern Pacific belongs to small group.%根据2011年东太平洋赤道附近海域探捕期间采集的1178尾茎柔鱼样本,进行了茎柔鱼的生物学特性研究。结果表明:茎柔鱼胴长范围为201-421mm,平均胴长为290mm,优势胴长为260—320mm;体重范围为200-2650g,平均体重为1000g,优势体重为600-1000g;胴长与体重关系呈幂指数关系;雌、雄性比为2.59:1;性腺成熟度以I、Ⅱ期为主;缠卵腺长和缠卵腺重随着性腺的成熟而逐步增大;雌性初次性成熟胴长为397.2mm;摄食等级以0—1级为主;与其它海域相比,该海域茎柔鱼个体差异明显,主要为小型群体。

  12. Tumor de células gigantes del peroné y parálisis del nervio peroneo común

    Directory of Open Access Journals (Sweden)

    Liván Peña Marrero

    2013-12-01

    Full Text Available Los tumores del peroné comprenden solamente el 2,5 % de los tumores primarios de los huesos y solo un tercio de ellos son benignos. El tumor de células gigantes es una lesión benigna, pero puede tener un comportamiento localmente agresivo. Se presenta el caso con el propósito de destacar el tratamiento quirúrgico utilizado con éxito ante un tumor de este tipo. Se trata de un paciente de 30 años de edad con diagnóstico imagenológico e histológico de un tumor de células gigantes del extremo proximal del peroné que produjo una parálisis compresiva del nervio peroneo común. Se realizó una resección en bloque del extremo proximal del peroné y una liberación del nervio peroneo. El tumor era de gran tamaño y aunque no existía infiltración de los tejidos blandos vecinos ya había ruptura de la cortical, por lo que se clasificó como un grado III. Después de dos meses de rehabilitación la movilidad y estabilidad de la rodilla eran normales. El paciente recuperó la función nerviosa a los cinco meses de la operación. Después de 15 meses no había signos clínicos ni imagenológicos de recidiva del tumor. La condición de grado III y la localización del tumor, fueron los dos aspectos tomados en cuenta para la elección de la resección en bloque como tratamiento en este caso, técnica quirúrgica que permiti'o la extracción del tumor sin crear tensiones por tracción excesiva sobre el nervio peroneo común. El paciente está totalmente reintegrado a su vida laboral y personal.

  13. 鱿鱼皮明胶水解物降血压活性研究%Studies on the Antihypertensive Activity of Squid(Dosidicus eschrichitii Steenstrup)Skin Gelatin Hydrolysates

    Institute of Scientific and Technical Information of China (English)

    林琳; 李八方; 吕顺; 赵雪; 庄永亮; 陆剑锋

    2010-01-01

    探讨了秘鲁鱿鱼(Dosidicus eschrichitii Steenstrup)皮明胶水解物对血管紧张素转化酶(ACE)的抑制活性以及其降血压作用.采用超滤法对明胶水解液进行初步分离;采用比色法检测不同分子量范围鱿鱼皮明胶水解物组分的ACE抑制活性;采用两肾一夹型建立肾血管性高血压大鼠(RHR)模型,经口服预防给药30 d后,测定大鼠血压和血液中血管紧张素Ⅱ(AngⅡ)含量.试验结果表明鱿鱼皮明胶水解物体外均能明显抑制ACE的活性,其中UC-2和UF-2的半抑制浓度(IC_(50))分别为0.71和0.79 mg/mL.UF-2组分经口服预防给药可显著降低肾血管性高血压大鼠的动脉血压和大鼠血浆中的AngⅡ水平,具有较好的降血压效果.

  14. Rapid method for controlling the correct labeling of products containing common octopus (Octopus vulgaris) and main substitute species (Eledone cirrhosa and Dosidicus gigas) by fast real-time PCR.

    Science.gov (United States)

    Espiñeira, Montserrat; Vieites, Juan M

    2012-12-15

    The TaqMan real-time PCR has the highest potential for automation, therefore representing the currently most suitable method for screening, allowing the detection of fraudulent or unintentional mislabeling of species. This work describes the development of a real-time polymerase chain reaction (RT-PCR) system for the detection and identification of common octopus (Octopus vulgaris) and main substitute species (Eledone cirrhosa and Dosidicus gigas). This technique is notable for the combination of simplicity, speed, sensitivity and specificity in an homogeneous assay. The method can be applied to all kinds of products; fresh, frozen and processed, including those undergoing intensive processes of transformation. This methodology was validated to check how the degree of food processing affects the method and the detection of each species. Moreover, it was applied to 34 commercial samples to evaluate the labeling of products made from them. The methodology herein developed is useful to check the fulfillment of labeling regulations for seafood products and to verify traceability in commercial trade and for fisheries control. PMID:22980826

  15. Tumor de células gigantes de bainha de tendão no LCA Tendon sheath giant cells tumor in ACL

    Directory of Open Access Journals (Sweden)

    André Pedrinelli

    2007-01-01

    Full Text Available Trata-se de um relato de caso de tumor de células gigantes de bainha do ligamento cruzado anterior, uma localização extremamente rara para esse tipo de lesão. O paciente do sexo feminino apresentava dor no joelho, sem relato de trauma anterior. Foi submetido ao exame clínico, ao estudo radiográfico e de ressonância magnética da região. Feita a hipótese diagnóstica de TGC de Bainha, o paciente foi então tratado com ressecção artroscópica do tumor. O diagnóstico foi confirmado com exame anátomo-patológico. O paciente evoluiu bem, com melhora dos sintomas referidos no pré-operatório.The author presents a case report of Tumor Giant Cells (TGC localized on the anterior cruciate ligament sheath, an extremely rare site for this kind of lesion. A 37 y-o female patient presented with knee pain, with no history of previous trauma. She underwent clinical examination, X-ray study and magnetic resonance of the region. The diagnostic hypothesis of Sheath TGC was provided, and the patient was treated with tumor arthroscopy resection. Diagnosis was confirmed by anatomicopathological examination. By the end point assessment, none of the pre-operative symptoms were reported.

  16. Tumor de células gigantes costal ocupando todo o hemitórax Giant cell tumor of the rib occupying the entire hemithorax

    Directory of Open Access Journals (Sweden)

    Samuel Zuínglio de Biasi Cordeiro

    2008-03-01

    Full Text Available Os autores relatam o caso de uma paciente de 28 anos de idade portadora de tumor de células gigantes originário da costela. O tumor de grandes dimensões (25 × 17 cm ocupava todo o hemitórax e causava atelectasia do pulmão esquerdo. Tratava-se de uma neoplasia mesenquimal benigna, a qual raramente acomete as costelas. Foi realizada toracotomia com ressecção em bloco da parede torácica e do tumor. O objetivo deste artigo é enfatizar que, apesar da grande dimensão do tumor, ele pôde ser completamente ressecado, e o pulmão foi reabilitado.The authors report the case of a 28-year-old female patient with a giant cell tumor originating from the rib. The tumor, measuring 25 × 17 cm, occupied the entire hemithorax and caused atelectasis of the left lung. This tumor was a benign mesenchymal neoplasm, which rarely affects the ribs. A thoracotomy involving en bloc resection of the chest wall and tumor was performed. Despite the large dimensions of the tumor, complete resection was possible, and lung function was restored.

  17. Impacto da participação especial em campos gigantes offshore de petróleo Impact of special participation tax in offshore petroleum giant fields

    Directory of Open Access Journals (Sweden)

    Rodrigo Mendes Gandra

    2006-08-01

    Full Text Available Utilizando um cenário como estudo de caso, objetiva-se explorar o impacto econômico da Lei que rege a cobrança da Participação Especial (PE pela Agência Nacional do Petróleo (ANP sobre a decisão de investimento em projetos situados exclusivamente em campos gigantes de petróleo no Brasil. Embora este seja um exercício indutivo sem maiores pretensões, ele pode ser tomado como representativo para retratar a realidade das grandes empresas que têm em seu portfolio oportunidades de desenvolvimento de concessões com grande potencial petrolífero. Subsidiariamente, propõe-se uma alternativa ao modelo de tributação vigente.The main objective of this technical study is to show the economic impact of Special Participation Tax on decisions at projects of investments at Brazilian offshore fields with high production of petroleum. An alternative estimation approach is proposed in this paper for Special Participation Tax to facilitate the economic viability of offshore projects. This technical study is only a exercise of a real situation which big companies face when it have the opportunity to develop concessions with high potential of petroleum. Above all, we propose an alternative way to calculate the assessment.

  18. Condiloma gigante del pene (Tumor de Buschke-Lowenstein: Presentación de un caso Peneal Buschke-Lowenstein tumor: Case report

    Directory of Open Access Journals (Sweden)

    A.A. Núñez Serrano

    2009-03-01

    Full Text Available El condiloma gigante del pene o tumor de Buschke- Lowenstein, es un tumor epitelial benigno de origen viral y sexualmente transmisible, que en raros casos puede malignizar. Presentamos un paciente en el que el condiloma de localización peneana, creció rápidamente y destruyó estructuras. Su histología se caracteriza por papilomatosis y acantosis endo y exofítica. Existen diferentes tratamientos del tumor, pero el más efectivo es la extirpación quirúrgica radical para evitar recidivas y malignización.Buschke-Lowenstein tumour is an epithelial benign tumour sexually transmitted with a viral origin. We present a case of peneal localization with exofitic growth, compression and displacement of the deeper tissues, ulceration and urethral fistulae. Histology is characterized by papillomatosis and endo or exophytic acantosis. Local malignancy is still discussed. There are many possible treatments, but radical excision is the best to avoid malignant transformation and recurrences.

  19. Mucoceles gigantes: visão neurocirúrgica. Relato de dois casos Giant mucoceles: neurosurgical view. Report of two cases

    Directory of Open Access Journals (Sweden)

    Mirto N. Prandini

    2005-06-01

    Full Text Available São apresentados dois casos de mucocele gigante do seio frontal submetidos a tratamento cirúrgico. A manifestação clínica foi cefaléia de evolução prolongada, associada com protrusão unilateral do globo ocular de curta duração. Em ambos os casos foi realizada craniotomia frontal com remoção completa da lesão, reparação do soalho frontal com retalho pediculado de gálea e cranialização do seio frontal. No segundo caso, uma abordagem endoscópica intranasal foi combinada à abordagem externa no mesmo ato cirúrgico. Alguns aspectos abordando a etiologia, associação com outras afecções e tratamento cirúrgico são discutidos.Two patients harboring giant frontal mucoceles are reported. In both cases complaints of chronic headaches and progressive unilateral proptosis were preponderant. Surgical treatment included a frontal craniotomy with excision of the lesion, skull base reinforcement with pedicled galea and wide opening of the frontal sinuses. In the second case an intranasal endoscopic approach was combined with craniotomy at the same surgical operative time. Some aspects regarding etiology, association with other diseases and some surgical aspects are discussed.

  20. 秘鲁外海茎柔鱼渔场时空分布分析%Spatial and Temporal Distribution of Fishing Ground for Dosidicus giga s in the Offshore Waters of Peru

    Institute of Scientific and Technical Information of China (English)

    徐冰; 陈新军; 钱卫国; 田思泉

    2011-01-01

    Jumbo flying squid, Dosidicus gigas, distributed in the waters of Peru, is an important economic squid. Understanding of the spatial and temporal variations in the distribution of this squid is useful to rational utilization of its resources. In this study, based on the fishing data and sea surface temperature (SST) collected by Chinese squid fleets in the waters off Peru from 2003 to 2004 and from 2006 to 2009, the methods of spatial distance and aggregative analysis were used to study the spatial and temporal variations in fishing ground for Dosidicus gigas. The result indicated that there were some differences on the gravity between years. It was found that the position of longitude showed westward move with months, whereas its latitude showed northward shift from January to June and southward shift from July to December. The cluster analysis showed that four groups are divided, I. E. (2003, (2006 and 2008)), (2004, (2007 and 2009)) respectively. The results indicated that the gravities of catch between 2006 and 2009 are different. The former's weight position of catch is 82°23'W and 12°53'S and the tatter's weight position of catch is 81°47 W and 14°27' S, which have 1. 5 degrees of latitude difference. The results showed that the monthly difference in fishing ground may be caused by the migration of jumbo flying squid, and the annual difference in fishing ground may be related to the changes of marine environment.%秘鲁外海茎柔鱼是重要的经济性种类,掌握其渔场时空分布规律有助于资源的合理利用.本文根据2003-2004年和2006-2009年我国鱿钓船在秘鲁外海的生产统计和海洋表面温度(SST)等资料,使用空间距离和聚类分析的方法,对其各年间渔场时空分布进行分析比较.结果表明,各年产量重心的分布都存在一定差异,产量重心在经度上随月份整体上呈现向西移动的趋势,在纬度方向上1~6月整体上呈向北移动的趋势,7~12月则表现出向南移

  1. 秘鲁鱿鱼和日本海鱿鱼营养成分分析与评价%Analysis and Evaluation of Nutritional Compositions of Dosidicus gigas and Onychoteuthis borealijaponicus okada

    Institute of Scientific and Technical Information of China (English)

    杨宪时; 王丽丽; 李学英; 黄洪亮; 迟海

    2013-01-01

    以秘鲁鱿鱼(Dosidicus gigas)和日本海鱿鱼(Onychoteuthis borealijaponicus okada)为原料,对其胴体的营养成分进行了分析比较与评价.研究表明,秘鲁鱿鱼和日本海鱿鱼都是低脂肪高蛋白食品,两者的蛋白质、脂肪、灰分含量均相近,水分含量前者显著高于后者(P<0.05).两者的磷P、锌Zn、铜Cu含量没有显著性差别,日本海鱿鱼钙Ca的含量为(2.31‰)高于秘鲁鱿鱼(1.64‰).秘鲁鱿鱼的氨基酸总量、∑EAA/∑AA均高于日本海鱿鱼,按照FAO/WHO建议的氨基酸评分标准模式,两者均属于优质蛋白质.两种鱿鱼含量最高的氨基酸均为谷氨酸,以AAS模式来看,虽然两种鱿鱼必须氨基酸指数不同,但都大于0.5,说明鱿鱼胴体营养丰富且符合人体对氨基酸的需求.秘鲁鱿鱼含有10种不饱和脂肪酸,日本海鱿鱼含有7种.与其他海产品相比较,鱿鱼的DHA含量较高,营养丰富,是具有较高开发前景的优质海产品.

  2. Paralarvae of the complex Sthenoteuthis oualaniensis-Dosidicus gigas (Cephalopoda: Ommastrephidae) in the northern limit of the shallow oxygen minimum zone of the Eastern Tropical Pacific Ocean (April 2012)

    Science.gov (United States)

    Sánchez-Velasco, Laura; Ruvalcaba-Aroche, Erick D.; Beier, Emilio; Godínez, Victor M.; Barton, Eric D.; Díaz-Viloria, Noe; Pacheco, María. R.

    2016-03-01

    The three-dimensional distribution of the paralarvae of the complex Sthenoteuthis oualaniensis-Dosidicus gigas (Cephalopoda: Ommastrephidae) was analyzed at the northern limit of the shallow oxygen minimum zone in the Eastern Tropical Pacific in April 2012. The upper limit of the oxygen minimum water (˜44 µmol/kg or 1 mL/L) rises from ˜100 m depth in the entrance of the Gulf of California to ˜20 m depth off Cabo Corrientes. Most of the paralarvae of this complex, dominated by D. gigas, were concentrated in the Gulf entrance, between the thermocline (˜20 to ˜50 m depth) and the sea surface, in the warmest (>19°C) oxygenated (>176 µmol/kg) layer. The highest abundance of paralarvae was detected in an anticyclonic eddy (˜120 km diameter and >500 m deep), which contained lower-salinity water (<35 g/kg), consistent with formation in the California Current. Lower paralarvae abundance was recorded further south off Cabo Corrientes, where hypoxic layers were elevated as water shoaled nearshore. Almost no paralarvae were found in the north of the study area beyond the strong salinity front (˜34.8-35.4 g/kg) that bounded the anticyclone. These results showed an affinity of the paralarvae for lower-salinity, oxygenated water, illustrated by the influence of the mesoscale anticyclonic eddy and the salinity front in their distribution. Based on this study, it can be concluded that the expansion of the depth range of hypoxic water observed in the Eastern Tropical Pacific may be increasing environmental stress on the paralarvae by vertically restricting their habitat, and so affecting their survival.

  3. 利用智利外海茎柔鱼内脏速酿鱼露的研究%Study on fish sauce brewed from the viscera of Dosidicus gigass

    Institute of Scientific and Technical Information of China (English)

    曲映红; 王敏; 刘志东; 陈新军; 陈舜胜

    2011-01-01

    目的 以智利外海茎柔鱼内脏为原料,采用保温、加曲、加酶等不同速酿方法制备鱼露.方法 测定鱼露在不同酿制阶段的pH值、氨基酸态氮和章鱼胺含量,并对最终样品作感官评价.结果 与结论酿制20 d内,pH值和氨基酸态氮变化显著,20 d后趋于稳定.鱼露酿制前期,章鱼胺含量逐渐增加,15~20 d时,达到最大值,然后又呈下降趋势.保温和加曲速酿的样品在气味上优于加酶的样品.%Objective To brew fish sauce using the viscera of Dosidicus gigass. Methods To shorten brewage period, methods such as insulation, adding enzyme or koji were adopted. The changes of pH value,amino acid nitrogen and content of octopamine during brewage were investigated. The sensory characteristics were also evaluated. Results and Conclusion The pH value and amino acid nitrogen increased obviously in the first 20 days and then became steady. The content of octopamine climbed to the top of 6~7 mg · L-1 ml during 15~20 days of brewage and decreased afterwards. The smell of fish sauce added enzyme was the most unpleasant among the three kinds of samples.

  4. Índice de mortalidad en cultivo del camarón gigante de agua dulce (Macrobrachium rosenbergii en estanques seminaturales en Loreto, Perú

    Directory of Open Access Journals (Sweden)

    Norma Arana Flores

    2013-12-01

    Full Text Available El objetivo del presente trabajo fue evaluar el índice de mortalidad en un cultivo del camarón gigante de agua dulce (Macrobrachium rosenbergii; para ello se acondicionaron 1000 post larvas con peso y longitud promedio de 0,2 g y 2 cm, respectivamente, en un estanque de tierra de 200m2 de espejo de agua, a una densidad de siembra de 5 ind/m2, el alimento suministrado fue de tipo extruzado con 35% PB para el primer mes; posteriormente se suministró una ración con 32% PB hasta el final, la frecuencia alimenticia fue de 3 veces/día los dos primeros meses, reajustándose a 2 veces/día los dos siguientes meses; la tasa alimenticia varió entre 13 y 3,5%; las evaluaciones biométricas se realizaron cada 10 días. Los parámetros limnológicos como temperatura, transparencia, OD, pH, CO2 y dureza se registraron cada 15 días. Los índices de crecimiento aplicados fueron ganancia de peso, ganancia de longitud, ICAA, TCE y supervivencia. Los resultados registran una ganancia en peso y longitud de 27,24 g y 12,37 cm; el incremento de peso y longitud diario en promedio fue de 0,23 g y 0,12cm; ICAA 3,30, TCE 3,59%; sobrevivencia 95%, índice de mortalidad  5%. El análisis limnológico registró variaciones mínimas que no influenciaron negativamente sobre el crecimiento y sobrevivencia de los camarones; la correlación entre el peso y longitud registra una relación positiva, con un nivel de correlación muy buena.

  5. Uso de hábitat de nutria gigante Pteronura brasiliensis, a través de rastros indirectos, en la zona de influencia de Puerto Carreño (Vichada-Colombia)

    OpenAIRE

    Sánchez Pedro; Díaz Gómez Diana Lucía

    2007-01-01

    La nutria gigante Pteronura brasiliensis es uno de los mayores depredadores de los sistemas acuáticos de la Orinoquia colombiana. En Colombia mantiene la categoría “En peligro” de la IUCN y actualmente la principal amenaza que enfrenta es la degradación de su hábitat. Se realizaron recorridos a pie por orillas de lagunas y caños y recorridos en bote en el cauce principal de segmentos de los ríos Bita y Orinoco. En puntos de muestreo de orilla sistemáticamente elegidos, que corresponden a punt...

  6. Caracterización molecular, genética poblacional y relación biológica del nemertino Malacobdella arrokeana endocomensal de la almeja gigante Panopea abbreviata

    OpenAIRE

    Alfaya, José E. F.

    2014-01-01

    [ES] Malacobdella arrokeana Ivanov et al., 2002 es un nemertino que vive en la cavidad del manto de la almeja gigante Panopea abbreviata, ambas especies endemicas del Mar Argentino. Mediante la secuenciación y análisis del gen mitocondrial citocromo oxidasa I (COI), se corroboró que M arrokeana diverge genéticamente de M. grossa en un 11,6%, y 10,4% con respecto a M. japonica. Tanto M. arrokeana como P. abbreviata comparten el mismo nivel trófico y los mismos ítems alimentarios, compuestos en...

  7. Pneumonia complicada por pneumatocele gigante em criança com síndrome da imunodeficência adquirida: importância da fisioterapia respiratória Pneumonia complicated by a giant pneumatocele in a child with acquired immunodeficiency syndrome: importance of chest physiotherapy

    OpenAIRE

    Silvia Regina M. de Paula; Melissa Pinto Gurgel; Luciana Macchiaverni; Fabíola Meister Pereira; Maria Ângela G. de O. Ribeiro; Camila Isabel S. Santos

    2010-01-01

    OBJETIVO: Descrever os efeitos do tratamento fisioterapêutico na prevenção de complicações respiratórias de uma criança com síndrome da imunodeficiência adquirida, que apresentava pneumatocele gigante. DESCRIÇÃO DO CASO: Criança com oito anos de idade, do sexo feminino, encaminhada para acompanhamento fisioterapêutico em hospital universitário devido a quadro de hipersecreção pulmonar, histórico de pneumonias e presença de pneumatocele gigante. A conduta fisioterapêutica incluiu técnicas de h...

  8. Reconstrucción en linfedema peneano y escrotal secundario a hernia inguinal bilateral gigante Reconstruction in penile and scrotal lymphedema secondary to billateral giant inguinal hernia

    Directory of Open Access Journals (Sweden)

    A. Fernández García

    2009-12-01

    Full Text Available El linfedema peneano y escrotal tiene consecuencias funcionales, estéticas, sociales y psicológicas significativas para el paciente que lo padece. Es una enfermedad infrecuente en los países desarrollados, aunque relativamente prevalente en los países tropicales. Su causa más común es la filariasis, aunque en nuestra práctica diaria se asocia más frecuentemente a cirugía, radioterapia, procesos inflamatorios y neoplásicos. Presentamos un caso singular de linfedema penoescrotal secundario a cirugía por hernia inguinal gigante bilateral que persistía un año después de la intervención. El tratamiento quirúrgico consistió en la exéresis de toda la piel linfedematosa del escroto involucrada y el uso de colgajos de piel escrotal posterior para la cobertura testicular. En un segundo tiempo quirúrgico se llevó a cabo una extirpación total de la piel del pene y del tejido subcutáneo superficial a la fascia de Buck. Empleamos injertos de piel de grosor parcial para cubrir el pene denudado. El resultado estético postoperatorio fue aceptable y los resultados funcionales y psicológicos son satisfactorios para el paciente 3 años después de la cirugía.Lymphedema of the penis and scrotum has important functional, cosmetic, social, psychological consequences for the affected patient. It is a rare disease in the developed countries, although it is relatively frequent in tropical countries. Globally, the most common cause is filariasis, although in our practice it is most frecuently associated to surgery, radiotherapy, inflammatory and neoplasic diseases. We report one rare case of penoscrotal lymphedema due to billateral giant inguinal hernia reconstrction. The lymphedema was persistent one year after the repair of the billateral hernia. The technique of reconstruction consisted of excision of all involved lymphedematous skin of the scrotum, and use of posterior scrotal flaps for testicular coverage. In a second surgical time, a total

  9. Installation of a permeable reactive barrier at the mining complex facility in Los Gigantes - Cordoba : Monitoring plan of surface and underground water

    International Nuclear Information System (INIS)

    The Argentine National Atomic Energy Commission declares under its Environmental policy the commitment to restore those sites where activities concerning Uranium mining were developed. It makes it beyond the scope of the Project of Environmental Restitution of the Uranium Mining (PRAMU from its Spanish abbreviation). The Chemistry of Water and Soil Division at the Environmental Chemistry and Energy Generation Department belonging to the Chemistry Management Office assist the PRAMU on the installation of an hydroxyapatite permeable reactive barrier (PRB) inside the Mining Complex facility placed at Los Gigantes in the Argentine province of Cordoba (in advance named the site). Among the preliminary assessment activities that are being carried out before the installation of the PRB, it has been prepared a monitoring program of surface water and groundwater useful to develop an environmental baseline suitable for the efficiency assessment of the corrective action to be applied. An exploratory campaign was conducted in the site with the aim of establishing a monitoring net of meteorological and hydrological, as well as physical, chemical and biological parameters in matrixes of sediments, water and suspended particulate matter collected on a regular time basis from its surface water and groundwater bodies. The processed results turn into useful environmental information to: a) determine the status of the environmental baseline of the site, b) establish a water quality index (WQI) to manage the natural resource quality according to a rational basis, c) plan experiments related to the design process of a biogenic hydroxyapatite PRB and d) apply chemometric and mechanistic models to forecast the contaminants mobilization through different scenarios and improve the engineering design of the PRB. Once achieved the hydrogeological characterisation of the site and taking into account the originality of the system the following results have been reached: 1) The boundaries of

  10. 基于生物经济学模型的东南太平洋茎柔鱼管理策略探讨%Bio-economic Model forDosidicus gigasin the southeast Pacific Ocean

    Institute of Scientific and Technical Information of China (English)

    张畅; 丁琪; 陈新军

    2015-01-01

    The jumbo flying squid (Dosidicus gigas) is one of important economic cephalopod species. In order to ensure the sustainable utilization of fishery, reasonable management strategies should be made by considering ecological, economic and social benefits which based on Gordon-Schaefer bio-economic model. The catch data from China between 2003 and 2012,and 10 scenarios with different fishing effort was designed, which combined with biology, economy and society, accumulated benefit in 1 year, 5 years, 10 years, 20 years. The result shows that the scenarios 6 and the scenarios 7 bring great economic benefit in the medium in the long run and also keep the resource in the maximum sustainable yield. Although higher fishing effort (like scenarios 1 with 1,110,000 times of fishing) can bring better social benefits in the short run, it will badly destroy the resource and the long-term benefits. In conclusion, the most suitable fishing effort should be controlled between 810 000 to 860 000 times.%利用2003—2012年茎柔鱼生产统计数据以及相关经济学参数,以Gordon-Schaefer生物经济模型为理论依据,以生态效益、经济效益和社会效益综合衡量作为其优化配置的基础,模拟在10种不同捕捞努力量方案下1 a、5 a、10 a、20 a茎柔鱼资源的优化配置结果,即累计的渔获量、利润和资源量状况。结果表明,捕捞努力量81和86万次方案的中长期经济效益较大,且保持在最大可持续产量时的资源量;而较大捕捞努力量(如111万次)方案短期社会效益虽好,但资源破坏严重且长期利益最低。研究认为,最适捕捞努力量应控制在81~86万次间。

  11. 超高压对秘鲁鱿鱼肌原纤维蛋白凝胶特性的影响%Effect of ultra-high pressure on Gel properties of myofibril of jumbo squid,Dosidicus gigas

    Institute of Scientific and Technical Information of China (English)

    陆海霞; 张蕾; 李学鹏; 励建荣

    2010-01-01

    秘鲁鱿鱼(Dosidicus gigas)是一种高产量、低价格、低品质的海洋渔业资源,由于其肉质粗糙,还有酸、苦、涩等不良风味,使秘鲁鱿鱼的资源化利用成为一个难点问题.本研究以秘鲁鱿鱼为研究对象,通过测定肌原纤维蛋白凝胶的硬度、弹性、电泳图谱等,研究了超高压对其凝胶特性的影响,并比较了其与热诱导凝胶的差异.结果表明,超高压300 Mpa、10 min时,秘鲁鱿鱼肌原纤维蛋白凝胶弹性达到最大值1.43;超高压300 Mpa、25 min时凝胶弹性为1.42;超高压400 Mpa、25 min时凝胶硬度达到最大值52.5 g;300 Mpa、保压25 min时凝胶强度达到最高值68.4 g.不添加TG-B型谷氨酰胺转氨酶(Tgase)时,秘鲁鱿鱼肌原纤维难以形成热诱导凝胶;添加了2%Tgase的热诱导凝胶硬度较高,可达到74.74g,但凝胶弹性仅为0.90,凝胶强度为67.0 g,与超高压诱导凝胶的强度相近.研究表明,超高压具有促进凝胶形成和改善凝胶特性尤其是凝胶弹性的作用,可以成为替代热处理的一种秘鲁鱿鱼鱼糜制品生产的新技术.

  12. 基于外部形态特征的东南太平洋茎柔鱼种群结构研究%POPULATION STRUCTURE OF DOSIDICUS GIGAS BASED ON THE MORPHOLOGCIAL ANALYSIS IN THE SOUTHEASTERN PACIFIC

    Institute of Scientific and Technical Information of China (English)

    易倩; 陈新军; 贾涛; 刘必林

    2012-01-01

    茎柔鱼是大洋性重要经济头足类,分布范围广泛,种群结构复杂.本文根据2008年5月~2009年10月对智利、秘鲁2个海区采集的茎柔鱼生物学样本,利用胴宽、鳍长、触腕长等11个外部形态指标与胴长之比,分析东南太平洋茎柔鱼种群结构组成及其差异,并建立相应的判别函数.研究认为,采集的渔获物样本中,初步可分为大型和小型2个种群.2个海区间大型群和小型群的外部形态特征差异显著,2个海区利用外部形态特征对种群判别正确率均在60%以上.研究认为,研究认为,外部形态特征可作为划分茎柔鱼种群结构的有效方法之一.%The jumbo flying squid (Dosidicus gigas) is one of the important economic cepha-lopods, and the range of distribution is wide and the population structure is complex. According to the biological samples which caught in waters off Chile and Peru from May in 2008 to October in 2009 by Chinese squid flying fleets, the population structure of the jumbo flying squid in the southeastern Pacific was studied on the basis of the external morphology characteristics of the sampled squid. It was found that the sampled squid in the southeastern Pacific were mainly Large group and Small group. There was significantly different for both the large group and small group between the waters off Chile and Peru. It is found that the i-dentification accuracy of these populations were over 60% on the basis of the established i-dentifying equations. This finding suggested that population structure of the jumbo flying squid could be identified by using of used morphological analysis.

  13. 智利外海茎柔鱼耳石微量元素研究%Trace elements in the statoliths of Dosidicus gigas in the high sea waters off Chile

    Institute of Scientific and Technical Information of China (English)

    陆化杰; 刘必林; 陈新军; 方舟

    2013-01-01

    茎柔鱼(Dosidicus gigas)是东太平洋海域重要的经济头足类,分布很广,群体结构和生活史过程复杂.头足类耳石生态信息丰富,多被用于生活史重建、群体划分等领域的研究.本研究根据我国鱿钓船2007和2008年在智利外海采集的茎柔鱼样本,利用激光剥蚀电感等离子质谱法(Laser ablation inductively coupled plasma mass spectrometry,LA-ICP-MS)分析了18枚茎柔鱼耳石的微量元素组成及其分布特性.分析表明,茎柔鱼耳石主要由48种元素组成,含量最多的前10位元素分别为钙(Ca)、锶(Sr)、钠(Na)、硅(Si)、钾(K)、镁(Mg)、钡(Ba)、锌(Zn)、锰(Mn)和锂(Li).方差分析表明,不同性别间茎柔鱼耳石的Ca、Sr、K、Mg、Ba、Zn、Mn和Li含量不存在显著性差异,而Na和Si差异性明显;不同孵化群体间,除Zn和Mn不存在显著性差异外,其余元素的含量均存在显著性差异;茎柔鱼耳石的不同部位间,Sr、Na、K、Mg、Ba、Zn、Mn和Li的含量都存在显著性差异,而Ca和Si不存在显著性差异.研究表明,Sr、Ba、Mg、K和Li比较适合用于研究茎柔鱼群体的划分、洄游分布等方面的研究.

  14. Design of the GIGANT-18

    International Nuclear Information System (INIS)

    A transportable, continuously operating 'irradiation tunnel' type equipment was constructed for the radiation sterilization of seeds. The equipment consists of a control panel, a voltage regulator, a modular radiation protected tunnel with three MNR-203 type generators to each active unit, a water cooling unit, and their accessories. The output maxima of the generators are 200 Kv at 8 mA, and their electron beams can be collected to the same surface by means of a rotating device. For the in-service radiation protection of the modules iron plates with lead plate lining are used. The modular units are fastened first to a base pair of rails of a belt conveyor, then inserted into the tunnel. The equipment can be transported by a medium-size truck and handled by 4 persons. From its arrival at the spot, the equipment can be installed within 4 hours. (Sz.J.)

  15. Miofibroblastoma gigante de la mama

    OpenAIRE

    José Abraham Jaramillo Osorio

    2013-01-01

    ResumenEl miofibroblastoma es una neoplasia rara, inicialmente descrita en hombres y usualmente pequeña. Presentamos un caso de esta lesión, excepcionalmente grande en una mujer. El diagnóstico es posible con técnicas de inmunohistoquímica: S100, citoqueratina, Actina de músculo liso (AML) y CD 34. Estos tumores son benignos. El tratamiento consiste en la resección quirúrgica de la lesión. (Duazary 2009 I; 48-50)AbstractThe Myofibroblastoma is a uncommon neoplasm, initially informed in men, u...

  16. Miofibroblastoma gigante de la mama

    Directory of Open Access Journals (Sweden)

    José Abraham Jaramillo Osorio

    2013-10-01

    Full Text Available ResumenEl miofibroblastoma es una neoplasia rara, inicialmente descrita en hombres y usualmente pequeña. Presentamos un caso de esta lesión, excepcionalmente grande en una mujer. El diagnóstico es posible con técnicas de inmunohistoquímica: S100, citoqueratina, Actina de músculo liso (AML y CD 34. Estos tumores son benignos. El tratamiento consiste en la resección quirúrgica de la lesión. (Duazary 2009 I; 48-50AbstractThe Myofibroblastoma is a uncommon neoplasm, initially informed in men, usually small. We present a case of this lesion, exceptionality large in a woman. The diagnostic is possible with immunohistochemistry techniques: S100, MLA y CD34. These tumors are benign and may be treated by local excision.KeyWords: Breast; Myofibroblastoma; Immunohistochemistry.

  17. 智利外海茎柔鱼耳石生长特性的性别差异研究%Sexual Differences in Growth Characteristics of Statolith from Dosidicus Gigas in the High Sea Waters off Chile

    Institute of Scientific and Technical Information of China (English)

    陆化杰; 陈新军; 刘必林

    2012-01-01

    The statolith samples of Dosidicus gigas were collected by Chinese squid fishing vessels in the high sea waters off Chile from January to June 2007 and Janurary to May 2008. The statolith morphological parameters of 503 individuals (348 for females and 155 for males) were measured, and the statolith growth characteristics were studied combined with the age data. The results showed that the total statolith length (TSL), statolith radius (SR), rostrum lateral dome length (RLL), wing length (WL) and the maximum width (MW) were considered as the feature parameters of squid statolith. The growth of main parameters of statolith between male and female individuals were significantly different. For female squid, the relationship between TSL and age was the best for the exponential function, SR-age and RLL-age followed the power function, MW-age and WL-age were described by the linear function. While for the male squid, the relationships of TSL-age, SR-age and RLL-age were described by the power function, MW-age and WL-age were linear function. For female squid, the relative growth rates of TSL, SR, MW, RLL and WL, and the absolute growth rate of SR and RLL increased with age firstly and then decreased. The absolute growth rates of TSL and MW increased with age, and the absolute growth rate of WL fluctuated with increase of age. While for the male squid, the relative growth rate of TSL and SR, and the absolute growth rates of MW, RLL and WL increased with age firstly and then decreased, the relative growth rates of MW, RLL and WL, and absolute growth rate of TSL and SR fluctuated with age. The results suggested that the statolith growth of Dosidicus gigas had the sexual differences and the growth rate of males was larger than that of males in general.%根据2007年1~6月和2008年1~5月我国鱿钓船在智利外海调查期间采集的茎柔鱼耳石样本,测量了503枚耳石外部形态参数(雌性348枚,雄性155枚),结合耳石日轮,对耳石生长特

  18. Uso de hábitat de nutria gigante Pteronura brasiliensis, a través de rastros indirectos, en la zona de influencia de Puerto Carreño (Vichada-Colombia

    Directory of Open Access Journals (Sweden)

    Sánchez Pedro

    2007-12-01

    Full Text Available La nutria gigante Pteronura brasiliensis es uno de los mayores depredadores de los sistemas acuáticos de la Orinoquia colombiana. En Colombia mantiene la categoría “En peligro” de la IUCN y actualmente la principal amenaza que enfrenta es la degradación de su hábitat. Se realizaron recorridos a pie por orillas de lagunas y caños y recorridos en bote en el cauce principal de segmentos de los ríos Bita y Orinoco. En puntos de muestreo de orilla sistemáticamente elegidos, que corresponden a puntos con ausencia de rastro; y en cada punto donde se encontraron campamentos o madrigueras, se midieron variables del microhábitat que caracterizan la estructura física y la vegetación de la orilla. A partir de índices de abundancia de madrigueras y campamentos y mediante análisis de contingencia para tablas R X C se determinaron uso y preferencias de hábitat y microhábitat de la nutria gigante. Se encontró una preferencia por caños y lagunas
    para la construcción de madrigueras y campamentos. Se observó que la zona de ventanas caracterizada por afloramientos rocosos dentro del río Orinoco es hábitat para nutrias gigantes aunque es atípico según lo registrado en su área de distribución. Madrigueras y campamentos están asociados a orillas con grandes árboles caídos, suelos orgánicos y en menor proporción con sustratos rocosos. En particular las madrigueras están asociadas con sistemas de raíces y barrancos medianos. Es importante la protección de los sistemas acuáticos de esta zona en especial de lagunas, caños y de la zona de ventanas dentro del río Orinoco. El cuidado de las orillas es fundamental para asegurar la permanencia de poblaciones locales de la especie. El estudio reitera la importancia de realizar programas de investigación a largo plazo para profundizar en el conocimiento ecológico de la especie y generar estrategias de manejo y de conservación de los ecosistemas acuáticos en la región.

  19. Tumor de células gigantes em falange proximal com metástase pulmonar: relato de caso e revisão de literatura Giant cell tumor in proximal phalanx with pulmonary metastasis: case report and literature review

    OpenAIRE

    Frederico Carvalho de Medeiros; Fernando Carvalho de Medeiros; Izabella de Campos Carvalho Lopes; Guilherme Carvalho de Medeiros; Eduardo Carvalho de Medeiros

    2011-01-01

    Trata-se de um relato de caso de tumor de células gigantes (TCG) em falange proximal de terceiro dedo da mão esquerda com metástase pulmonar. A paciente apresentava dor no dedo sem história prévia de trauma. Foram realizados exame clínico, estudo radiográfico e ressonância nuclear magnética. Feito o estudo histológico, a partir de biópsia incisional, com hipótese de TCG. Foi submetida à amputação do dedo, confirmando o diagnóstico pela microscopia da peça. A paciente foi acompanhada devido ao...

  20. Análise dos últimos 50 casos de tumor de células gigantes ósseo tratados na unidade de tumores do aparelho locomotor dos Hospitais da Universidade de Coimbra

    OpenAIRE

    Lemos, António Carlos de Almeida Rodrigues de

    2009-01-01

    Introdução e Objectivo: O tumor de células gigantes ósseo constitui 5% dos tumores ósseos primários, podendo atingir os 20% na Ásia. A sua histologia, clínica e epidemiologia são conhecidas e encontram-se bem retratadas na literatura científica actual. O seu comportamento biológico imprevisível torna-o um desafio na obtenção de bons resultados com a preconização da terapêutica cirúrgica. O objectivo deste estudo foi investigar as características epidemiológicas, distribuição esquelética, méto...

  1. Determinación parcial del mapa de restricción del DNA mitocondrial de la nutria gigante de río Pteronura brasiliensis y comparación con otros mustélidos colombianos en cautiverio

    Directory of Open Access Journals (Sweden)

    Bernal J.

    2001-06-01

    Full Text Available La nutria gigante de río Pteronura brasiliensises un mamífero carnívoro de la familia Mustelidae, ala cual pertenecen también las tairas y los hurones. La nutria es considerada por el CITES comouna especie vulnerable y por la IUCN como especie en peligro de extinción. Por esta razón, elCentro de Biología Molecular del Gimnasio Campestre inicio un proyecto de genética conser-vacionista que pretende proveer información utilizable para el análisis, tanto de la especieP. brasiliensiscomo de sus familiares mas cercanos, y de esta forma, proponer planes de manejode la especie y su hábitat previniendo su extinción.

  2. Tumor de células gigantes da extremidade distal do fêmur: um desafio de tratamento Giant cell tumor of femoral distal end: a challenge in treatment

    Directory of Open Access Journals (Sweden)

    Suraj Bajracharya

    2009-01-01

    Full Text Available Apresentamos aqui um caso de tumor de células gigantes na extremidade distal do fêmur direito tratado com ressecção da massa tumoral em bloco com remoção aguda da extremidade proximal e distal e fixado com hastes longas em K atravessando o joelho, do fêmur à tíbia. Após a consolidação / união completa das extremidades, foi feita a remoção da haste em K, seguida pela corticotomia juntamente com a osteogênese da distração com o auxílio do anel fixador de Ilizarov. O comprimento foi alcançado com este processo. O resultado final foi muito bom neste caso. Revisamos as opções de tratamento para tumor maligno de células gigantes na extremidade distal do fêmur e as dificuldades de tratá-lo.We present a case of malignant giant cell tumor of distal end of right femur treated with resection of the tumor mass en block with acute docking of proximal and distal end and fixed with long K-nail across knee from femur to tibia. After complete consolidation/ union of the ends, removal of K nail was done followed by corticotomy along with distraction osteogenesis with the help of Ilizarov ring fixator. The length was achieved with this process. The end result was very good in this case. We reviewed the treatment options for malignant giant cell tumor of femoral distal end and the challenges in its treatment.

  3. Primary studies on the population genetic structure of Dosidicus gigas in the high seas of eastern Pacific Ocean%东太平洋公海茎柔鱼种群遗传结构初步研究

    Institute of Scientific and Technical Information of China (English)

    闫杰; 许强华; 陈新军; 李纲; 刘必林

    2011-01-01

    The jumbo flying squid(Dosidicus gigas)is commercially important fishery species in the world. Assessment of population genetic diversity levels of jumbo flying squid is fundamental to the conservation and management of this species. The samples derived from the Chinese squid jigging vessel were collected from the eastern Pacific waters(81.9°-94.9°W,8.9°N -11.3°S)from July to October 2009. By using 724 bp fragment of mitochondrial cytochrome b gene ( Cyt b), we analyzed the sequence variations and population genetic structures for 155 samples collected from seven sites of Peru and three sites of Costa Rica. In total, 16 variable sites were acquired, and all of them were parsimony sites. 43 haplotypes were identified from 155 individuals. Analysis of mtDNA Cyt b sequences of jumbo flying squids from the ten localities revealed that the mean haplotypic diversity was 0. 873, while the nucleotide diversity was 0.003 69. 6 haplotypes were shared by all the populations, while Peru population possessed the highest haplotypes (n = 20). The AMOVA test of D. Gigas revealed that 82. 70% of the genetic variation occurred within populations. FST analysis suggested that significant genetic differentiations were found between the partial Peru populations and the Costa Rica populations, and even between partial Peru populations. However, no significant genetic differentiations were detected between Costa Rica populations.%根据2009年7月到10月我国大型鱿钓渔船在东太平洋(81.9°~94.9°W,8.9°N~11.3°S)秘鲁和哥斯达黎加外海作业期间采集的样本,利用线粒体DNA细胞色素b基因的724 bp部分序列,分析了采自秘鲁7个采样点和哥斯达黎加3个采样点的155个个体的序列多样性与种群遗传结构.结果显示,724 bp片段中发现了16个变异位点,155个个体出现43个单倍型.序列多样性分析结果揭示,155个个体的平均单倍型多样性指数为0.873,核苷酸多样性指数为0.003 69.群体间共享6

  4. Biological characteristics of jumbo flying squid Dosidicus gigas in waters off Costa Rica%哥斯达黎加外海茎柔鱼生物学特性初步研究

    Institute of Scientific and Technical Information of China (English)

    李纲; 贾涛; 刘必林; 陈新军

    2011-01-01

    根据2009年7-8月在哥斯达黎加外海探捕期间采集的281尾茎柔鱼样本,对其生物学特性进行仞步分析.结果表明:茎柔鱼样本胴长范围为205~429 mm,优势胴长为260~360 mm,占81.14%;体重范围为0.17~1.69 kg,优势体重为0.2~1.0 kg,占88.26%;雌雄性比约为3.76∶1,性腺成熟度以Ⅲ和Ⅳ期为主,雄性、雌性性成熟的比例分别为94.92%和66.67%;摄食等级以0~1级为主,占89.32%.体重与胴长关系W=2.35×10-7LM2.5944.相对于加利福尼亚湾、秘鲁和智利外海的茎柔鱼,哥斯达黎加外海茎柔龟个体较小且体型偏瘦,属于小型或中型群体.研究亮点:2009年我国首次组织实施了哥斯达黎加外海茎柔龟资源探捕调查.根据此次调查的结果,从胴长组成、肥满度、性成熟、性比等角度和分布于秘鲁、智利外海和加利福尼亚近海等东太平洋其它海域的茎柔鱼生物学特性进行了比较研究.%During the trial fishing in the open waters off Costa Rica in the central east Pacific in July and August 2007, 281 jumbo squid Dosidicus gigas were sampled to examine the biological characteristics. The squid mantle length ML ranged from 205 to 429 mm, and the dominant size between 260 mm and 360 mm which accounted for 81.14% of the total. Body weight was 0.17 - 1.69 kg, in which 88.26% was 0.2 -2.0 kg. The female: male ratio was 3.76: 1. Maturity stages for the squid was mainly at Ⅲ and Ⅳ. 94.92% males and 66. 67% females were mature. Feeding stage 0 and 1 attained 89. 32%. The ML-weight relationship was expressed as W =2.35 × 10-7LM2.5944. It can be found that the size of jumbo squid off Costa Rica was smaller and thinner than that in the Gulf of California and waters off Chile and Peru, which indicated that jumbo squid off Costa Rica belongs to small or medium-sized group.

  5. Efeitos da Adubação e de Nematicida no Crescimento e na Produção da Palma Forrageira (Opuntia ficus indica Mill cv. Gigante Effects of Nematicide and Fertilization on the Forage Cactus (Opuntia ficus indica Mill cv. "Gigante" Growth and Production

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    Margareth Maria Teles

    2002-02-01

    Full Text Available O experimento foi realizado em telado do Departamento de Zootecnia da UFRPE, objetivando medir o efeito da adubação e de nematicida no crescimento e produção da palma, com sintoma de amarelecimento. Os tratamentos experimentais constaram da adição ou não de macronutrientes, micronutrientes e de nematicida em um delineamento experimental em blocos casualizados. Para número de cladódios primários, a análise de variância demonstrou efeito não significativo pelo teste F. Para número total de cladódios, número de cladódios secundários, área de cladódio, índice de área de cladódios e produção de matéria seca, a análise de variância revelou efeito significativo. Não houve efeito dos micronutrientes e de nematicida no grupo dos tratamentos de Solução de Macronutrientes Completa para número de cladódios primários, número de cladódios secundários, área de cladódio, índice de área de cladódios e produção de matéria seca, sendo a média geral 1,56; 0,84; 811,11 cm²; 1,15 e 42,73 g/vaso, respectivamente.The experiment was performed in a green house at the Animal Science Department of the Pernambuco Federal Rural University (UFRPE and aimed to study the nematicide and fertilization effects on the forage cactus cv. "Gigante" growth and production using propagative materials with clorotic symptom. The experimental treatments tested the addition or no of macronutrients, micronutrients and nematicide. It was used a complete randomized block design. Considering the primary cladode's number, no differences were found by F test. Significative differences were found to the total number of cladodes, secondary cladode number, cladode area, cladode area index and dry matter yield. The addition of micronutrients and nematicide did not influence the primary and secondary cladode number, cladode area, cladode area index and dry matter yield, and the mean values obtained were 1.56, 0.84, 811.11 cm², 1.15 and 42.73 g

  6. Expressão imuno-histoquímica da vimentina e do HHF-35 em fibroma de células gigantes, hiperplasia fibrosa e fibroma da mucosa oral Immunohistochemical expression of vimentin and HHF-35 in giant cell fibroma, fibrous hyperplasia and fibroma of the oral mucosa

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    Márcia Cristina da Costa Miguel

    2003-03-01

    Full Text Available O fibroma de células gigantes, a hiperplasia fibrosa e o fibroma constituem algumas das mais freqüentes lesões fibrosas orais, compartilhando características clínicas e histopatológicas. Este estudo teve o objetivo de investigar a imunorreatividade das células gigantes estreladas mono, bi ou multinucleadas, características do fibroma de células gigantes e, ocasionalmente presentes na hiperplasia fibrosa e no fibroma, a anticorpos anti-vimentina e anti-actina de músculo (HHF-35, visando detectar características fenotípicas destas células. Os resultados demonstraram que na maioria dos casos houve imunorreatividade para a vimentina, sugerindo um fenótipo fibroblástico para estas células.The giant cell fibroma, fibrous hyperplasia and fibroma are the most frequent fibrous oral lesions, sharing clinical and histopathological features. The purpose of this study was to investigate the immunoreactivity of the large stellate-shaped mononuclear and multinucleated cells, reported as the most characteristic histological feature of the giant cell fibroma but present occasionally in fibrous hyperplasia and fibroma, for the antibodies vimentin and HHF-35 in order to detect phenotypical characteristic of these cells. The results showed in the most of cases positive staining for vimentin, suggesting a fibroblast phenotype for these cells.

  7. Aplicación de terapia de vacío en el tratamiento de nevus pigmentario gigante en la infancia Negative pressure therapy in the treatment of a giant melanocytic nevus in chilhood

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    J. Fregenal

    2011-12-01

    Full Text Available Los nevus melanocíticos gigantes congénitos son muy infrecuentes. Su incidencia de malignización varía según las series clínicas entre el 2 y el 45%. Este riesgo de malignización y los problemas de adaptación psicosocial que suelen acarrear hacen recomendable el inicio del tratamiento quirúrgico de este tipo de lesiones antes de la edad escolar. Presentamos el caso de un niño de 7 años de edad con nevus melanocítico congénito gigante que afectaba a la espalda y al flanco derecho, de 30 x 19 cm de diámetro. Desarrollamos un protocolo terapéutico mediante programación de intervenciones quirúrgicas seriadas de mínima morbilidad, con postoperatorio simple y poco doloroso. En un primer tiempo realizamos extirpación de la lesión con bisturí ultrasónico y cobertura temporal del defecto creado con dermis artificial. En un segundo tiempo intentamos cobertura definitiva con piel cultivada autóloga, siendo necesario un tercer tiempo de cobertura con autoinjerto de espesor ultrafino. En este caso, el sistema de terapia de presión negativa VAC® mostró su eficacia para inmovilizar los apósitos de forma segura, indolora y en régimen ambulatorio.Giant congenital melanocytic nevi are very uncommon. Malignization incidence varies according to clinical series between 2 and 45%. This risk of malignization and psychosocial adaptation problems make necessary to begin the surgical treatment before school age. We present a 7-year-old child with a giant melanocytic nevus in the back and right flank, 30 x 19 cm in size. A therapeutic protocol using serial surgical interventions with minimal morbidity and an easy and painless postoperative care were developed. In the first surgery we removed the nevus with ultrasonic scalpel and used artificial dermis as a temporary coverage. In the second time we tried to complete the definitive coverage with autologous cultured skin, but we needed a third time to apply definitive ultrathin skin autograft. In

  8. Massive intracranial immature teratoma: report of a case with polyhidramnios and intense pelvic pain Teratoma imaturo gigante intracraniano: relato de caso com poli-hidrâmnio e dor pélvica intensa

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    Fernando A. Soares

    1996-06-01

    Full Text Available A case of massive intracranial immature teratoma in a female stillborn is reported. She was the product of the second pregnancy of a 25-year-old healthy woman. The pregnancy was unremarkable until the 25th week of gestation when the mother noticed a rapid enlargement of her abdomen and intense pelvic pain. Because of the pain, a cesarean section was indicated, and a stillborn weighing 2750g with macrocephaly was delivered. The cranial contents weighed 1350g and showed a huge tumoral mass with only a rim of normal brain. A histologic diagnosis of immature teratoma was made. Massive intracranial teratomas are rare tumors and their occurrence in intrauterine life is even rarer. Their histogenesis is unknown, and there is no explanation for their continuous growth during embryogenesis. A prenatal diagnosis of this rare condition can be made by ultrasound, computed tomography, or magnetic resonance imaging.Um caso de teratoma imaturo gigante do sistema nervoso central em um natimorto é relatado. Durante a gravidez, a mãe desenvolveu poli-hidrâmnio abrupto na 25ª semana de gestação e dor pélvica intensa, que levou a indicação de cesárea. O natimorto pesava 2750g, apresentava macrocefalia evidente e o conteúdo craniano pesou 1350g. Este era representado por tecido tumoral em sua maioria e apenas uma pequena rima de tecido encefálico normal. A histologia mostrou tratar-se de um teratoma imaturo. Teratomas intracranianos gigantes congênitos são neoplasias raras, de histogênese incerta e não há explicação para o crescimento contínuo e rápido durante a vida intra-uterína. O diagnóstico pré-natal pode ser realizado por ultra-sonografia, tomografía computadorizada ou ressonância magnética.

  9. Morphological variation of statolith of the jumbo flying squid (Dosidicus gigas )in the eastern Pacific Ocean%东太平洋茎柔鱼耳石形态差异性分析

    Institute of Scientific and Technical Information of China (English)

    易倩; 陈新军; 贾涛; 刘必林; 李刚

    2012-01-01

    The jumbo flying squid(Dosidicus gigas) is one of important economic cephalopods with statolith providing important ecological information. According to the statolith morphology of the squid caught in waters off Chile,Peru and Costa Rica from May,2008 to Oct,2009,the differences of statolith morphology and growth patterns were analyzed. It was found that the statolith morphological characteristics in different areas had statistically significant differences (P <0.05). The length index and only the ventral dorsal dome angle (DDA) angle index had significant differences. The result of the principal component analysis was that total statolith length ( TSL) was the most significant indicator of statolith morphology. The significant indicator of statolith angle was rostrum angle ( RA) in waters off Chile and Peru, and rostrum lateral dome angle (RDA) in waters off Costa Rica. The growth of various parts was synchronized and allometric during the growth process, and the changing tendency of morphology was narrow body, long and narrow rostrum and large dorsal tallied with the characteristics of pelagic cephalopods statolith. Statolith growth consisted of two phases. According to the data of rostrum lateral dome length (RDL), there were marked differences in morphology between TSL smaller and larger than 1 600 μm. Based on the data of the angle, there were marked differences in RA between TSL smaller and larger than 2 000 μm in waters off Costa Rica, and 1 800 μm in waters off Peru, and there were marked differences in RA in waters off Chile. The angle increased later than the length of statolith, so TSL of 1 600 μm might be regarded as an valid indicator of changes in water layer.%茎柔鱼是大洋性重要经济头足类,其耳石包含着重要的生态信息.根据2008年5月—2009年10月智利、哥斯达黎加、秘鲁外海采集的茎柔鱼耳石样本,分析三海区间耳石外部形态特征及生长模式差异.研究认为,不同海区间耳

  10. 东太平洋不同海区茎柔鱼渔业生物学的初步研究%Comparison of fishery biology for Dosidicus gigas from three different areas in the Eastern Pacific Ocean

    Institute of Scientific and Technical Information of China (English)

    陈新军; 李建华; 刘必林; 李纲; 钱卫国

    2012-01-01

    根据我国鱿钓船多年在秘鲁、智利和哥斯达黎加外海生产调查所采集的茎柔鱼样本,对3个不同作业海区茎柔鱼渔业生物学特性进行比较分析。研究表明,秘鲁、智利和哥斯达黎加外海茎柔鱼胴长范围分别为209~1 149 mm、166~837 mm和204~429 mm,优势胴长分别为250~400 mm、300~450 mm和250~350 mm,对应的渔获物中雌雄性比平均值分别为3.87∶1、2.50∶1、3.75∶1。根据胴长组成以及性成熟,认为秘鲁外海存在大型、中型和小型3个群体,智利外海以中型群体为主体并存在少量的大型群体,哥斯达黎加外海以小型群体为主体并存在少量的中型群体。秘鲁和智利外海茎柔鱼体重与胴长关系式的生长参数b值为3.06~3.17,而哥斯达黎加外海为2.57~2.63。秘鲁和智利外海茎柔鱼性腺成熟度均以Ⅰ级和Ⅱ级为主,而哥斯达黎加外海则以Ⅱ、Ⅲ和Ⅳ级为主。各月间摄食等级差异变化较为显著,但基本上以0~2级为主体。研究表明,3个海区茎柔鱼种群结构和生物学特性总体上有所差异。研究亮点:首次对秘鲁、智利和哥斯达黎加外海3个不同作业海区茎柔鱼渔业生物学特性进行比较分析,研究认为秘鲁外海存在大型、中型和小型3个群体,智利外海以中型群体为主体并存在少量的大型群体,哥斯达黎加外海以小型群体为主体并存在少量的中型群体。生长参数存在差异,各月间摄食等级差异变化较为显著。研究表明,3个海区茎柔鱼种群结构和生物学特性总体上有所差异。%According to the sampled squid,Dosidicus gigas,collected from the fishing and survey by Chinese squid fishing boats for many years off EEZ of Peru,Chile and Costa Rica,the biological characteristics of D.gigas form three different fishing areas are compared.The results indicated that their mantle lengths of D.gigas off EEZ of Peru,Chile and Costa Rica ranged from 209

  11. Preliminary study on the influence of water temperature on the recruitment of Dosidicus gigas%海洋水温对茎柔鱼资源补充量影响的初探

    Institute of Scientific and Technical Information of China (English)

    徐冰; 陈新军; 李建华

    2012-01-01

    茎柔鱼是短生命周期种类,其资源量极易受到海洋环境变化的影响。根据2003-2010年我国鱿钓船队在东南太平洋公海的生产统计和海洋表面温度(SST)、Nino 1+2 SSTA等资料,利用灰色关联度方法,分析了茎柔鱼作业渔场和产卵场最适表层水温范围占总面积的比例(分别用PF和PS来表示),以及它们与Nino 1+2SSTA的关系,进而探讨了PF和PS与单位捕捞努力量渔获量(CPUE)的关系,研究海洋环境变化对茎柔鱼资源补充量(用CPUE来表示)的影响。结果表明,2003-2010年PF和PS比值最大的分别集中在9-11月和12月-翌年1月。PS与Nino 1+2 SSTA的灰色关联度要高于PF与Nino 1+2 SSTA的值,由此推测厄尔尼诺等事件对PS的影响较为显著。同时,分析结果表明PS与CPUE的灰色关联度较高,在时间上呈现连续性,11月至翌年2月均在0.4左右。研究认为,拉尼娜事件会增大作业渔场最适表层水温面积比例,并形成广泛的上升流,从而有利于茎柔鱼索饵与生长,也利于茎柔鱼资源补充量的增加;反之则不利于茎柔鱼资源补充量的发生。%Dosidicus gigas is a short-lived species and its recruitments would be affected by change of environmental conditions.Based on the fishing data collected by Chinese squid jigger fleets,and sea surface temperature(SST) and Nino 1+2 SSTA data,in the high sea waters of Southeastern Pacific Ocean from 2003 to 2010,the grey correlations between the proportion of favorable SST in the fishing ground and spawning ground(indicated by PF and PS,respectively) are analyzed,and the relationship between PF,PS and CPUE are also analyzed to evaluate the effect of changable environment on recruitment of D.gigas respectively.The results indicated that the largest proportions of favorable SST in fishing ground are from September to November,and from December to January of the next year for the spawning ground.The grey correlation between the

  12. Exigência de proteína para o caracol gigante (Achatina fulica em fase de crescimento Protein requirements for giant snail (Achatina fulica during the growth phase

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    Giovani Sampaio Gonçalves

    1999-11-01

    Full Text Available Com o objetivo de determinar a exigência de proteína bruta (PB em dietas para o caracol gigante, 480 animais, com peso inicial médio de 4,05±0,04g, foram distribuídos em um delineamento inteiramente casualizado com quatro tratamentos (12,00%, 15,00%, 18,00% e 21,00% de PB e três repetições de 40 animais por unidade experimental, durante um período de 90 dias. Foi observado efeito quadrático (P Achatina fulica é de 18,28%.Aiming to determine the requirements of crude protein (CP in diets for giant snail, 480 animals, with 4.05±0.04g initial mean weight were used, and distributed in a completely randomized design with four treatments (12.00%, 15.00%, 18.00% and 21.00% CP, three replications of 40 animals per experimental unit, during a period of 90 days. A quadratic effect (P Achatina fulica is 18.28%.

  13. Produção de fitomassa e acúmulo de nutrientes na parte aérea do sorgo de Guiné gigante Biomass production and accumulation of nutrients in shoots of Giant Guinea sorghum plants

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    Gustavo Pavan Mateus

    2011-12-01

    Full Text Available A escolha de espécies com elevada produção de fitomassa para utilização como plantas de cobertura no sistema de semeadura direta é extremamente importante em regiões de inverno seco. O objetivo deste trabalho foi avaliar a produção de fitomassa e acúmulo de nutrientes na parte aérea das plantas de sorgo Guiné gigante (Sorghum bicolor subespécie bicolor raça guinea, semeados em diferentes épocas de semeadura. Foi utilizado um delineamento em blocos ao acaso, com seis tratamentos e quatro repetições. Os tratamentos foram constituídos por seis épocas de semeadura (25/09/2000; 25/10/2000; 24/11/2000; 22/12/2000; 22/02/2001 e 03/04/2001. Por ocasião do florescimento das plantas, avaliou-se a produção de matéria seca, o número e diâmetro de colmos e a altura das plantas. Também foi determinado o teor e acúmulo de macro e micronutrientes, além da relação C/N. O ciclo das plantas diminuiu com o atraso da época de semeadura, e, conseqüentemente, a produção de matéria seca e a relação C/N também foram menores. Comportamento contrário foi observado para o teor de nutrientes. O sorgo de Guiné gigante é sensível ao fotoperíodo e, portanto, semeaduras mais tardias ocasionam diminuição do crescimento das plantas, produção de biomassa e acúmulo de nutrientes. Esta espécie consiste em uma boa opção para cultivo como planta de cobertura no sistema de semeadura direta devido a alta produção de fitomassa e ciclagem de N, P e K.Choosing species with high phytomass production to be cropped in no tillage system is extremely important in dry winter regions. The purpose of this research was to study plant biomass production and accumulation of nutrients in shoots of Giant Guinea sorghum plants (Sorghum bicolor subspecies bicolor race Guinea sown in different sowing dates. A randomized complete block design with six treatments and four replications was performed. Treatments consisted of six sowing dates (09/25/2000; 10

  14. Oligosymptomatic and giant basilar artery dolichoectasia discovered after a stroke: case report Dolicoectasia gigante e oligossintomática da artéria basilar descoberta após uma isquemia: relato de caso

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    Cynthia Resende Campos

    2007-06-01

    Full Text Available The most frequently diagnosed complication of vertebrobasilar dolichoectasia (VBD is the compression of structures adjacent to the vertebral and basilar arteries. A giant VBD with only slight compressive symptoms is unusual. In this setting, the diagnosis of VBD may be casually revealed after the occurrence of a posterior circulation stroke, another potential complication. We report a 48-year-old woman who presented a two-month history of continuous buzz and a slight right-sided hearing loss that was followed by a cerebellar ischemic stroke. Brain CT and MRI revealed a marked compression of the brainstem due to an ectatic, tortuous and partially thrombosed basilar artery (BA. The largest cross-sectional diameter of BA was 18 mm. The patient had a good functional recovery within the two-month follow-up after stroke with modified Rankin scale score (mRSS=2. At the one-year follow-up, patient still kept the complaints of continuous buzz, slight right-sided hearing loss and the mRSS was the same. We call attention for an unusual giant VBD that caused an impressive brainstem compression with displacement of important structures in an oligosymptomatic patient. Diagnosis was made only after the occurrence of a stroke. Despite of the good functional recovery after stroke, the presence of significant atherosclerotic changes and the large BA diameter may indicate a poor outcome. However, after one year, she remains oligosymptomatic.A complicação mais freqüentemente encontrada na dolicoectasia vertebrobasilar (DVB é a compressão de estruturas adjacentes às artérias vertebrais e à artéria basilar. Uma DVB gigante apenas com sintomas compressivos leves é infreqüente. Nesse caso, o diagnóstico pode ser descoberto ao acaso após uma isquemia da circulação posterior, outra complicação possível da DVB. Relatamos o caso de uma mulher de 48 anos com história de zumbido e perda auditiva leve a direita por 2 meses, desenvolvendo, a seguir, uma

  15. Fitorremediação de solo contaminado com picloram por capim-pé-de-galinha-gigante (Eleusine coracana Phytoremediation of picloram-contaminated soil by Eleusine coracana

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    Sergio de Oliveira Procópio

    2008-12-01

    Full Text Available O longo efeito residual do herbicida picloram no solo aumenta o risco de lixiviação e de fitotoxicidade em culturas sucedâneas; sua presença no solo pode ser abreviada com o uso da fitorremediação. O objetivo deste trabalho foi avaliar a influência da densidade populacional de capim-pé-de-galinha-gigante (Eleusine coracana sobre a fitorremediação de solo contaminado com o herbicida picloram. O experimento foi realizado em casa de vegetação localizada no município de Rio Verde-GO, no período de setembro de 2006 a fevereiro de 2007. Os tratamentos foram compostos pela combinação entre quatro densidades populacionais da espécie vegetal Eleusine coracana (capim-pé-de-galinha-gigante (0, 7, 14 e 21 plantas por vaso, correspondendo a 0, 172, 344 e 516 plantas m-2, respectivamente e três doses do picloram (0, 80 e 160 g ha-1 - aplicadas diretamente nos vasos, simulando níveis de contaminação do solo. Após o cultivo da espécie vegetal fitorremediadora no substrato por 100 dias, efetuou-se, no próprio vaso, a semeadura da soja (Glycine max L., espécie utilizada como bioindicadora da presença do picloram. A espécie Eleusine coracana mostrou ter capacidade de remediar solos contaminados com o herbicida picloram. A partir de 172 plantas m-2, aumentos na densidade populacional da espécie fitorremediadora não proporcionaram redução de carryover do herbicida picloram sobre a cultura da soja semeada em sucessão.The long-term residual effect of the herbicide picloram poses risks of leaching and phytotoxicity to successive crops. Phytoremediation can abbreviate the long carryover effect. This research was carried out from September 2006 to February 2007, under green house conditions, in Rio Verde, Goiás, Brazil, to study the influence of Eleusine coracana population density on phytoremediation of soil contaminated with picloram. The treatments consisted of the combination of four Eleusine coracana population densities (0, 7, 14

  16. Eficácia terapêutica do interferon alfa em criança com hemangioma gigante craniofacial: relato de caso Therapeutical effectiveness of interferon alpha in a child with craniofacial giant hemangioma: case report

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    Nilson Lopes da Fonseca Junior

    2008-06-01

    Full Text Available O hemangioma é o tumor benigno mais freqüente da infância. O hemangioma capilar geralmente apresenta-se como uma mancha ou tumoração violácea bem delimitada. O diagnóstico destas lesões é clínico. O hemangioma gigante é rara e extensa variação do hemangioma capilar, que geralmente ocorre em recém-nascidos e lactentes. Várias são as modalidades terapêuticas, como a injeção intralesional de corticóide, laserterapia, injeção intralesional de soluções esclerosantes, corticoterapia sistêmica, cirurgia, radioterapia e embolização. Novas modalidades terapêuticas têm sido desenvolvidas, com o objetivo de se obter melhores resultados e possibilitar o tratamento de lesões de difícil acesso cirúrgico e refratárias às modalidades terapêuticas utilizadas rotineiramente. Os melhores resultados tem sido obtidos com o interferon alfa. Este é um caso de uma paciente com três meses de idade, que apresentava desde o nascimento, tumoração arroxeada e amolecida em pálpebra superior do olho direito, lesões cutâneas planas e arroxeadas em região temporal e parietal direita. Realizada tomografia computadorizada de crânio evidenciando processo expansivo orbitário vascularizado com extensão para fossa média, seio cavernoso e fossa posterior. O tratamento inicial foi a corticoterapia oral durante quarenta dias, com redução progressiva por quatro semanas. Com o quadro praticamente inalterado, foi iniciado o tratamento com interferon alfa, na dose de 3.000.000 U/m², subcutâneo, três vezes por semana. Após 9 meses de tratamento, observa-se apenas uma pequena lesão orbitária residual. Neste caso, o interferon alfa apresentou-se como boa opção no tratamento do hemangioma gigante craniofacial.Hemangiomas are the most commom benign tumors of infancy. Capillary hemangioma generally is presented as a spot or well-defined purple lesion. The diagnosis of these tumors is based on physical examination. Giant hemangioma is a rare

  17. Fitorremediação de solo contaminado com o herbicida picloram por plantas de capim pé de galinha gigante Phytoremediation of soil contaminated with picloram by Eleusine coracana

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    Renato L. de Assis

    2010-11-01

    Full Text Available Objetivou-se, com este trabalho, avaliar a influência de diferentes lâminas de água no solo sobre a fitorremediação de solo contaminado com o herbicida picloram por plantas de capim pé de galinha gigante (Eleusine coracana. O experimento foi conduzido em casa de vegetação com a utilização de amostras de solo de um Latossolo Vermelho distroférrico. Os tratamentos foram compostos pela combinação de quatro níveis diários de reposição da água, através das lâminas de água evaporada (80, 90, 100 e 110% da lâmina de água evaporada e de três doses do picloram (0, 80 e 160 g ha-1, com quatro repetições. Após 48 h da aplicação do herbicida foi realizada a semeadura do capim pé de galinha gigante. Decorridos 90 dias da emergência, ocorreram a dessecação das plantas e o corte na altura do coleto; em seguida, efetuou-se a semeadura com soja (Glycine max L., cultivar Monsoy 6101, espécie considerada, pela literatura, bioindicadora da presença do picloram. Os resultados obtidos indicaram que a maior lâmina de reposição de água evaporada do solo auxilia na remediação de solos contaminados com o herbicida picloram, utilizando-se plantas de E. coracana. A melhoria da fitorremediação foi significativa apenas quando a contaminação do solo com o herbicida foi de 80 g ha-1.This study aimed to evaluate the influence of different water depths in the soil on phytoremediation of soil contaminated with picloram by Eleusine coracana plants. The experiment was carried out under greenhouse conditions with samples of Oxisol. The treatments consisted of the combination of four daily levels of water replacement (80, 90, 100 and 110% of evaporated water and three picloram rates (0, 80 and 160 g ha-1, arranged in a completely randomized design, in a factorial scheme 4 x 3, with four replications. The phytoremediation specie was sowed 48 h after applying the herbicide. At 90 days post emergence, the plants were desiccated and cut and

  18. Tumor de células gigantes em falange proximal com metástase pulmonar: relato de caso e revisão de literatura Giant cell tumor in proximal phalanx with pulmonary metastasis: case report and literature review

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    Frederico Carvalho de Medeiros

    2011-04-01

    Full Text Available Trata-se de um relato de caso de tumor de células gigantes (TCG em falange proximal de terceiro dedo da mão esquerda com metástase pulmonar. A paciente apresentava dor no dedo sem história prévia de trauma. Foram realizados exame clínico, estudo radiográfico e ressonância nuclear magnética. Feito o estudo histológico, a partir de biópsia incisional, com hipótese de TCG. Foi submetida à amputação do dedo, confirmando o diagnóstico pela microscopia da peça. A paciente foi acompanhada devido ao risco de metástase pulmonar, evidenciada em estudo radiográfico e tomografia computadorizada de tórax, sendo submetida à toracotomia. Desde então, houve melhora dos sintomas referidos no pré-operatório e ausência de recidiva local e novas metástases.This is a case report on a giant cell tumor in the proximal phalanx of the third finger of the left hand, with pulmonary metastasis. The patient presented pain in the finger without any previous history of trauma. Clinical examination, radiographic imaging and magnetic resonance imaging were carried out. A histological evaluation was done from an incisional biopsy, taking the hypothesis of giant cell tumor. The patient underwent amputation of the finger and the diagnosis was confirmed by means of microscopy on the specimen. The patient was followed up because of the risk of lung metastasis, which was shown by radiographic examination and computed tomography on the chest, and thoracotomy was performed. Since then, there has been an improvement of the symptoms that had been reported preoperatively, and no local recurrence or new metastasis has been found.

  19. Consumo e comportamento ingestivo de caprinos e ovinos alimentados com palma gigante (Opuntia ficus-indica Mill) e palma orelha-de-elefante (Opuntia sp.) = Intake and ingestive behavior of sheep and goats fed with cactus pear (Opuntia ficus-indica Mill) and prickly pear (Opuntia sp.)

    OpenAIRE

    Agenor Costa Ribeiro Neto; Valéria Louro Ribeiro; Adriana Guim; Mário de Andrade Lira; Ângela Maria Vieira Batista; Maria Caroline de Almeida Cavalcanti

    2008-01-01

    O presente trabalho teve por objetivo avaliar o consumo e comportamento ingestivo de caprinos e ovinos alimentados com palma Gigante (Opuntia ficus-indica Mill) e palma Orelhade-elefante (Opuntia sp.). Foram utilizados 20 animais mestiços, sendo dez caprinos e dez ovinos, alojados em galpão coletivo, contidos individualmente por meio de cordas, distribuídos em delineamento inteiramente casualizado, em um arranjo fatorial 2 x 2 (duas espécies animais e duas variedades de palma). As observações...

  20. Composição físico-química e potencial para ensilagem do sorgo-de-guiné gigante em seis épocas de semeadura Physical-chemical composition and ensiling potential of Giant Guinea sorghum in six different sowing dates

    OpenAIRE

    Gustavo Pavan Mateus; Carlos Alexandre Costa Crusciol; Ciniro Costa

    2005-01-01

    A ausência de culturas alternativas para o cultivo de outono-inverno é um entrave nos sistemas de produção agrícola, principalmente em regiões de inverno seco. O objetivo deste trabalho foi avaliar a produção de forragem, o potencial para ensilagem e a composição química do sorgo-de-guiné gigante (Sorghum bicolor subsp. bicolor raça guinea), de acordo com a época de semeadura. O delineamento experimental utilizado foi o de blocos casualizados, com quatro repetições e seis épocas de semeadura....

  1. Tratamiento quirúrgico del granuloma central de células gigantes: estudio y seguimiento de 10 casos. Revisión de la literatura Surgical treatment of central giant-cell granuloma: Study and follow-up of 10 cases. Literature review

    OpenAIRE

    M. Fernández Ferro; J. Fernández Sanromán; A. Costas López; J. Sandoval Gutiérrez; López Sánchez, A.

    2011-01-01

    Objetivos: El granuloma central de células gigantes (GCCG) es una lesión benigna, no odontogénica, de origen incierto y con unas características epidemiológicas, clínicas y radiológicas bien conocidas. El objetivo de nuestro estudio es recoger, describir y evaluar nuestra experiencia en el tratamiento quirúrgico de este tipo de lesiones y su seguimiento, haciendo especial hincapié en los datos clínicos y radiológicos así como en las complicaciones y recidivas tras el mismo. Se realiza, además...

  2. Astrocitoma subependimário de células gigantes em pacientes com esclerose tuberosa: achados em ressonância magnética de dez casos Subependymal giant cell astrocytoma in patients with tuberous sclerosis: magnetic resonance imaging findings in ten cases

    OpenAIRE

    Karina Takata; Gasparetto, Emerson L.; Claudia da Costa Leite; Leandro T. Lucato; Umbertina C. Reed; Hamilton Matushita; Paulo Henrique P. de Aguiar; Sérgio Rosemberg

    2007-01-01

    OBJETIVO: Relatar os achados de ressonância magnética (RM) em 10 casos de astrocitoma subependimário de células gigantes (ASCG) em pacientes com esclerose tuberosa (ET). MÉTODO: Foram estudados de forma retrospectiva 10 pacientes com ET e diagnóstico histológico comprovado de ASCG. Quatro pacientes eram do sexo masculino e seis do feminino, com idade média de 15,7 anos. Todos os pacientes foram investigados com RM, sendo os exames revisados por dois radiologistas, havendo decisão por consenso...

  3. Aneurisma venoso gigante de veia ilíaca externa secundário a fístula arteriovenosa traumática: relato de caso Giant external-iliac-vein aneurysm secondary to traumatic arteriovenous fistula: a case report

    OpenAIRE

    Patrick Bastos Metzger; Heraldo Antonio Barbato; Fernanda Maria Resegue Angelieri; Camila Baumann Beteli; Ana Claudia Gomes Petisco; Jose Eduardo Martins Barbosa; Mohamed Hassan Saleh; Fábio Henrique Rossi; Nilo Mitsuru Izukawa

    2011-01-01

    Aneurismas venosos abdominais são raros. Os localizados nas veias ilíacas externas estão entre os mais infrequentes aneurismas venosos publicados na literatura. Relatamos o caso de um paciente jovem com aneurisma venoso gigante de veia ilíaca externa secundário a uma fístula arteriovenosa adquirida há 20 anos, tratado pelos métodos convencional e endovascular com sucesso.Venous abdominal aneurysms are rare entities, especially at the external iliac vein. We report the case of a young male pat...

  4. Avaliação da agressividade da lesão de células gigantes periférica da cavidade bucal através de estudo histoquímico-imunohistoquímico = Evaluation of the aggressiveness of peripheral giant cell lesion of the oral cavity by means of a hystochemical-immunohystochemical study

    OpenAIRE

    De Carli, João Paulo

    2008-01-01

    Objetivo: Estudar a agressividade da lesão de células gigantes periférica (LCGP) através de um estudo histoquímico e imunohistoquímico. Metodologia: Foram revisados os arquivos da Faculdade de Odontologia de Araçatuba (FOA-UNESP) e da Faculdade de Odontologia da Universidade de Passo Fundo (FOUPF), tendo sido obtidos 181 casos de LCGP, dos quais 61 preencheram os critérios de elegibilidade. Primeiramente, graduou-se a agressividade das LCGPs, que foram distribuídas em três grupos de estudo co...

  5. 基于神经网络的东南太平洋茎柔鱼渔场预报模型的建立及解释%Modeling of fishing grounds for Dosidicus gigas based on BP neural network in southeast Pacific

    Institute of Scientific and Technical Information of China (English)

    汪金涛; 高峰; 雷林; 官文江; 周劲望; 叶守建; 陈新军

    2014-01-01

    东南太平洋秘鲁茎柔鱼(Dosidicus gigas)是我国鱿钓船的重要捕捞对象.准确预报中心渔场是提高渔业生产能力的重要内容.本文根据2006~ 2009年我国远洋船队东南太平洋秘鲁茎柔鱼生产统计数据(月份、经度、纬度)及遥感获得的表温、Ni(n)o 3.4区海表温度异常、海面高度资料,利用反向传播(EBP)神经网络建立秘鲁茎柔鱼中心渔场预报模型.在此基础上,尝试使用神经网络解释图(neural interpretation diagram)、自变量相关(independent variable relevance)、灵敏度分析(sensitivity analyses)三种方法解释EBP模型权重,推断东南太平洋茎柔鱼中心渔场形成的主要影响因子.结果认为,影响中心渔场的3个主要影响因子为Ni(n)o 3.4区海表温度异常、表温和纬度,其贡献率分别为28.95%、22.1%和19.68%.利用EBP神经网络建立的预报模型不仅在预报精度上达到要求,而且能够很好地解释秘鲁茎柔鱼中心渔场的形成机制.

  6. A comparison of habitats of Dosidicus gigas in the fishing ground off Chile and Peru based on information gain technique%基于信息增益技术比较分析智利和秘鲁外海茎柔鱼渔场环境

    Institute of Scientific and Technical Information of China (English)

    易倩; 陈新军; 余为; 刘必林; 李建华; 方舟

    2014-01-01

    茎柔鱼(Dosidicus gigas)是短生命周期物种,广泛分布在东太平洋海域.其资源大小和分布受不同时空尺度的气候变化影响.根据我国鱿钓船生产数据,结合卫星遥感获取的环境资料,利用信息增益技术对东太平洋智利和秘鲁外海两个海区茎柔鱼栖息环境进行比较分析.可以得出,智利和秘鲁外海茎柔鱼中心渔场分布对应的适宜表温(SST)范围分别是15~ 23℃和16 ~ 25℃,且每月最高作业频次对应的SST值具有明显的季节性特征,与SST平均值关系密切.信息增益技术结果表明,智利外海和秘鲁外海影响中心渔场分布的关键环境因子基本相同,主要为SST、55米层水温(T55)、表层至55米层的水温梯度(G0-55).研究认为,不同海域表征茎柔鱼中心渔场的主要环境因子是有差异的,这一差异主要由其海洋环境大背景所决定.

  7. Observation of reproductive system and gonad development of male jumbo flying squid Dosidicus gigas in south-east Pacific Ocean%东南太平洋茎柔鱼雄性生殖系统的解剖与性腺发育的研究

    Institute of Scientific and Technical Information of China (English)

    许泓民; 陈新军; 管卫兵

    2013-01-01

    采用解剖学和组织切片技术对东南太平洋茎柔鱼Dosidicus gigas雄性生殖系统进行观察.结果表明:茎柔鱼雄性生殖系统由精巢、输精管、储精囊、前列腺、精荚囊、阴茎、生殖孔等组成,其中精巢由众多精小叶组成,精小叶间彼此紧密相连,精小叶中分布着各种不同发育阶段的生殖细胞,生殖细胞在精小叶中由外向内发育,成熟精子分布在精小叶中央(小叶腔),通过小叶腔把精子输送至精荚;茎柔鱼雄性性腺发育分为5个时期,Ⅰ、Ⅱ为未成熟期,Ⅲ、Ⅳ、Ⅴ为成熟期,茎柔鱼雄性性腺为不同步发育,性腺发育成熟后仍存在早期阶段的生殖细胞.研究表明,用传统的肉眼判别方法与组织切片判别方法得出的茎柔鱼雄性性腺发育期结果存在一定差异,其差异主要体现在性腺发育的未成熟时期.

  8. BROCA GIGANTE DA CANA-DE-AÇÚCAR, TELCHIN LICUS LICUS (DRURy, 1773 NA REGIÃO CENTRO-SuL: PREOCUPAÇÃO PARA OS PRODUTORES

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    SILVA JUNIOR, Mauricio Pacheco da

    2008-01-01

    Full Text Available The sugar cane plantation expands its borders each year, throughout the national territory. Thus,increases the amount of biomass that will to be exploited by man in sugar and alcohol produce and also byother organisms, which will have food in abundance. The growth of mechanized harvesting, with the consequentdecrease in burning of straw and the expansion of the sucroalcooleiro sector are causing changes into entomofaunain certain areas or regions of sugar cane plantation. One of the new threats to the sugar cane plantations in southcentralregion, causing uncertainty and concern to farmers, is the giant worm, Telchin licus licus (DRURY, 1773.This worm has always been considered pest in sugar cane plantation in the North and Northeast regions of thecountry, and, just nowadays, it is a matter of concern to the sugarcane from South Centre region. This observationis to alert the sugar cane farmers about the risk of spread of the pest and damage that can be generated by this specie.A cultura da cana-de-açúcar expande suas fronteiras a cada ano, por todo o território nacional. Comisso, aumenta, a quantidade de biomassa que será aproveitada pelo homem, na produção de açúcar e álcool e,também, por outros organismos, que terão alimentos em abundância. O crescimento da colheita mecanizada coma conseqüente diminuição da queima da palha e a expansão do setor sucroalcooleiro estão provocando mudançasda entomofauna de determinadas áreas ou regiões de canavieiras. Uma das novas ameaças às plantações de canade-açúcar na região Centro-Sul, causando incerteza e inquietação aos produtores, é a broca gigante, Telchinlicus licus (DRURY, 1773. Esse inseto sempre foi considerado praga da cultura da cana-de-açúcar nas regiõesNorte e Nordeste do país, sendo, somente agora, motivo de preocupação para os canaviais da região Centro-Sul.Essa constatação serve para alertar os produtores de cana-de-açúcar sobre o risco de dissemina

  9. Ependimoma myxopapilar sacro gigante con osteolisis

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    Pablo Ajler

    2014-01-01

    Full Text Available Objective: Ependymomas are usually intramedullary tumors. Extradural presentation with invasion of surrounding tissues is extremely rare. We present a case of a sacral ependymoma with extensive local invasion and bony destruction. Case Description: A 53 year old woman with lumbosacral pain, perineal paresthesias and sphincter dysfunction. MRI and CT demonstrated a giant expansive lesion from S2 to S4 with large tissue invasion and osteolysis. A complete resection was performed with good functional results. Anatomopathological examination informed myxopapillary ependymoma. Discussion: The extent of surgical resection is the best predictor of good prognosis. Radiotherapy is reserved as adjuvant to incomplete resection and tumor recurrence. Chemotherapy should only be used in cases where surgery and radiotherapy are contraindicated. Conclusion: intra and extradural osteolitic sacral myxopapillary ependymomas are extremely rare lesions. Although uncommon it should not be excluded from the preoperative diagnosis. Complete resection is the gold standard treatment.

  10. Uma forma gigante em Nicotiana tabacum L.

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    A. Rodrigues Lima

    1942-04-01

    Full Text Available A giant type of tobacco, Nicotiana tabacum L., spontaneously appeared in a tobacco culture at the Central Experiment Station, Campinas, during the agricultural year 1938-39. Cuttings from three of those plants were grown to maturity and seeds were secured from 18 of them. All the seed reproduced the giant type.

  11. Carcinoma suprarrenal gigante Giant suprarenal carcinoma

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    Ariel Núñez Roca

    2010-06-01

    Full Text Available OBJETIVO: presentar un caso de carcinoma suprarrenal de gran tamaño, su diagnóstico y tratamiento. DESCRIPSIÓN: se presenta un paciente del sexo masculino, de 69 años de edad, con antecedentes de diabetes mellitus tipo II que refería palparse un tumor abdominal. Al examen físico tenía un tumor palpable en la fosa lumbar y flanco izquierdos de aproximadamente 15 a 16 cm de diámetro. El tumor se corroboró en el ultrasonido, por lo que fue necesario realizar la tomografía axial computadorizada simple y contrastada para establecer el origen suprarrenal de este. Se comprobaron niveles elevados de cortisol en plasma. INTERVENSIÓN: se realizó la suprarrenalectomía más la nefrectomía izquierdas. La evolución posoperatoria resultó satisfactoria. El informe histopatológico de la pieza quirúrgica fue carcinoma suprarrenal con infiltración renal. Se indicó tratamiento de quimioterapia con mitotano con posterioridad a la cirugía. En los controles semestral y anual realizados, el paciente se encontró asintomático y con niveles de cortisol sanguíneo normales. El ultrasonido, la tomografía axial computadorizada del abdomen y la radiografía del tórax no mostraron recidiva tumoral ni metástasis. CONCLUSIONES: los carcinomas suprarrenales pueden evolucionar de forma asintomática hasta alcanzar grandes dimensiones. El tratamiento combinado, quirúrgico y con quimioterapia, mejora el pronóstico de estos pacientes.OBJECTIVE: this is the presentation of a case of a very large suprarenal carcinoma. DESCRIPTION: a male patient aged 69 with a history of type 2 diabetes mellitus mentioning the palpation of a abdominal tumor. At physical examination we noted the presence of a palpable tumor in lumbar fossa and left flanks of approximately 15 to 16 cm diameter. Ultrasound corroborated the tumor being necessary to perform a single and contrasted computed tomography to establish its suprarenal origin. There were high levels of cortisol in plasma. INTERVENTION: a left suprarenalectomy and nephrectomy were performed. Postoperative course was satisfactory. The histopathology report of the surgical specimen was a suprarenal carcinoma with renal infiltration. Chemotherapy with mitotane was prescribed after surgery. In half-yearly and yearly controls the patient was asymptomatic and with normal blood cortisol levels. Ultrasound, computerized axial tomography of abdomen and thorax X-rays not showed tumor relapse neither metastasis. CONCLUSIONS: suprarenal carcinomas may to evolve in an asymptomatic way and to have bid dimensions. Combined treatment of surgery and chemotherapy, improves the prognosis of these patients.

  12. Atypical proliferating mucinous tumors of gigantic dimensions

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    Likić-Lađević Ivana

    2008-01-01

    Full Text Available Background. Ovarian tumors of low malignant potential (LMP are also known as atypically proliferating tumors. Ovarian tumors of LPM account for approximately 15% of all epithelial ovarian cancers. Mean age of occurrence is 40 years and they are 15-20 cm in diameter. Case report. A 32-year-old female patient was hospitalized as an urgent case with a large tumor mass that filled the entire abdomen. Cyst was 100 × 70 cm dimensions belonging to the right ovary and filled with 18 liters of content. Right adnexectomy, resection of the second ovary, as well as biopsy of the omentum were performed. Lymphadenectomy of the right iliac and obturator area was also performed. After receiving definitive histopathological results it was decided to perform a radical reoperation. On the 10th postoperative day relaparotomy, total hysterectomy and left adnexectomy were performed. The patient was released on the 6th postoperative day. She used to come to regular examinations up to date. Conclusion. This case is a proof that LMP tumors have low malignant potential, they grow slowly and can reach great proportions.

  13. Giant basal cell carcinoma Carcinoma basocelular gigante

    OpenAIRE

    Nilton Nasser; Nilton Nasser Filho; Bruno Trauczynski Neto; Lissandra Melati da Silva

    2012-01-01

    The basal cell carcinoma is the most common skin cancer but the giant vegetating basal cell carcinoma reaches less than 0.5 % of all basal cell carcinoma types. The Giant BCC, defined as a lesion with more than 5 cm at its largest diameter, is a rare form of BCC and commonly occurs on the trunk. This patient, male, 42 years old presents a Giant Basal Cell Carcinoma which reaches 180 cm2 on the right shoulder and was negligent in looking for treatment. Surgical treatment was performed and no s...

  14. Gigantic excitation of Bose-Einstein condensate

    CERN Document Server

    Karkuszewski, Z P; Zakrzewski, J; Karkuszewski, Zbyszek P.; Sacha, Krzysztof; Zakrzewski, Jakub

    2001-01-01

    It is shown that by a modification of the trapping potential one may excite Bose-Einstein condensate to a state in which atomic external degrees of freedom are predominantly in the {\\it excited} trap state. Such an excited condensate can be prepared experimentally --- it requires only a proper change in time of the potential in atomic traps, as realized in laboratories already.

  15. 秘鲁外海茎柔鱼资源丰度和补充量与海表温度的相关关系%Relationship between sea surface temperature and abundance index,recruitment of Dosidicus gigas in the waters off Peru

    Institute of Scientific and Technical Information of China (English)

    徐冰; 陈新军; 陆化杰; 刘必林

    2013-01-01

    茎柔鱼(Dosidicus gigas)广泛分布在东太平洋海域,是一种重要的经济捕捞种类.本文根据2003~2010年我国鱿钓船在秘鲁外海的生产统计数据和遥感获取的海表温度(SST)数据,利用典型相关性分析法和Marine Explore软件分析了茎柔鱼的资源丰度和补充量(以单位捕捞努力量渔获量为指标,t·d-1)与栖息海域20°N~20°S、70°W~110°W各渔区SST的相关性,获得影响秘鲁外海茎柔鱼资源丰度和补充量的SST因子,并建立关系模型.结果表明,当年资源丰度与SST的相关性最高值为5月份92.5°W、12.5°N海区(相关系数为0.94,P<0.001),该海区SST最适范围为29.8~30.5℃;下一年度资源补充量丰度指数与当年SST的相关性最高值为6月份98.5°W、11.5°N海区的(相关系数为0.93,P <0.01),该海区SST最适范围为29.1 ~30.5℃.同时,分别建立了基于SST因子的资源丰度预测模型(P<0.01).研究认为,秘鲁外海茎柔鱼资源丰度和补充量可较好利用SST因子进行预测.

  16. QUALIDADE BACTERIOLÓGICA DE CAMARÕES GIGANTES DA MALÁSIA (Macrobrachium rosembergii CULTIVADOS COM DEJETOS DE AVES BACTERIOLOGICAL QUALITY OF MALASIAN GIANT SHRIMPS (Macrobrachium rosembergii RAISED WITH CHICKEN MANURE

    Directory of Open Access Journals (Sweden)

    Patrícia Lorena da Silva Neves Guimarães

    2007-09-01

    Full Text Available

    No presente experimento verificou-se a qualidade bacteriológica de camarões gigantes da Malásia (Macrobrachium rosembergii cultivados em cativeiro, em consórcio com dejetos de avicultura, na Estação de Piscicultura da Escola de Veterinária da Universidade Federal de Goiás, obtendo-se os seguintes resultados: pesquisa de Salmonella ausência em 25g em todas as amostras; contagem de Staphylococcus aureus - variou de < 1,0 x 10¹ a 2,0 x 10¹ UFC/g contagem de microrganismos aeróbios ou facultativos mesófilos viáveis - < 1,0 x 10¹ a 1,0 x l0³ UFC/g ; psicrotróficos - < 1,0 x 10¹ a 1,0 x 10³ UFC/g; NMP de Coliformes totais - 3 a 15/g; NMP de Coliformes fecais - 3 a 7/g. Os valores acima estão em acordo com o padrão nacional.

    PALAVRAS-CHAVE: Camarão, Macrobrachium rosembergii; dejetos de aves.

    The bacteriological quality of Malaysian giant shrimps (Macrobrachium rosnnbergii raised under captivity condition and fed with aviculture residue was studied in the Station of Pisciculture of the Veterinary School, Federal University of Goiás. The following results were observed: research of Salmonella free in 25g, in all samples; Staphylococcus aureus counts ranged from < 1,0 x 10¹ to 2,0 x 10¹ CFU/g; aerobic or aerobic facultative mesophiles counts ranged from < 1,0 x 10¹ to 1,0³ CFU/g; psicrotrophiles count was < 1,0 x

  17. Bilateral giant renal angiomyolipoma associated with hepatic lipoma in a patient with tuberous sclerosis Angiomiolipomas renais gigantes bilateralmente associados a lipoma hepático em pacientes com esclerose tuberosa

    Directory of Open Access Journals (Sweden)

    Edison Daniel Schneider-Monteiro

    2003-01-01

    Full Text Available OBJECTIVE: To report a case of bilateral giant renal angiomyolipoma associated with tuberous sclerosis, with successful treatment, and to review the literature concerning angiomyolipoma treatment. CASE REPORT: Patient with tuberous sclerosis and angiomyolipoma diagnosed by ultrasonography during her pregnancy. At that time, the angiomyolipoma on the right side was 9 cm in diameter. Conservative management was selected during her pregnancy. The patient returned 7 years later, with a 24.7 x 19.2 x 10.7 cm tumor on the right side and another of 13 x 11.5 x 6.5 cm on the left side, in addition to multiple small angiomyolipomas. A nephron-sparing surgery with tumoral enucleation was performed on the right side, and after 3 months, the tumor on the left side was removed. Renal function in the post-operative period was preserved, and contrast medium progression was uniform and adequate in both kidneys. CONCLUSION: We conclude that an angiomyolipoma larger than 4 cm should be removed surgically, since they have a greater growth rate and pose a risk of hemorrhage. Resection of smaller tumors is safe and has decreased morbidity. Tumoral enucleation is an effective treatment method that preserves kidney function.OBJETIVO: Relatar um caso de angiomiolipoma gigante, bilateral, associado a esclerose tuberosa, tratado com sucesso e revisar a literatura concernente ao tratamento do angiomiolipoma. RELATO DO CASO: Paciente portadora de esclerose tuberosa, com diagnóstico de angiomiolipoma realizado por ultra-sonografia durante gestação. O tumor apresentava 9cm de diâmetro, à direita. Optou-se por conduta conservadora durante a gestação, e a paciente retornou somente 7 anos após, com tumor de 24,7 x 19,2 x 10,7 cm à direita e outro à esquerda de 13 x 11,5 x 6,5 cm, além de múltiplos angiomiolipomas pequenos. Realizada inicialmente ressecção tumoral à direita, por enucleação, com preservação do parênquima renal, e 3 meses após à esquerda. A

  18. El Condicionamiento Operante en el Manejo ex situ de Insuficiencia Renal Crónica en nutria gigante (Pteronura brasiliensis en la Fundación Zoológica -resumen-

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    Y M Nuñez-Moreyra

    2014-12-01

    Full Text Available El manejo en cautiverio de enfermedades como la insuficiencia renal crónica representa un reto para las instituciones encargadas de la conservación ex situ de fauna silvestre. La insuficiencia renal es una condición que se desarrolla de manera espontánea y progresiva en carnívoros de edad media a avanzada durante periodos de tiempo prolongado‚ dificultando en muchas ocasiones la identificación de la causa subyacente. El daño renal es irreversible‚ por tanto‚ el tratamiento está orientado a reducir la sobrecarga renal y los signos clínicos asociados‚ así como prevenir la progresión de la enfermedad. La nutria gigante (Pteronura brasiliensis es una especie clasificada como en peligro crítico por la IUCN y ubicada en el apéndice I de la CITES; siendo amenazada por la caza ilegal‚ la degradación de hábitat‚ sobrepesca‚ minería y la contaminación de bosques y ríos. Son individuos de gran tamaño (1,5-2m largo y de 25-32kg de peso cuya dieta se basa exclusivamente en pescado‚ llegando a consumir el 10% de su peso al día. En cautiverio la base de la dieta es pescado de agua dulce con bajas concentraciones de tiaminasas y bajo contenido graso‚ suplementando con vitamina B1 y E para prevenir la deficiencia de estos nutrientes. En octubre de 2013 un individuo de Pteronura brasiliensis “Lluvia” macho de 16 años de edad ingresa a procedimientos bajo protocolo anestésico (Ketamina 5mg/kg‚ Dexmedetomidina 0,02mg/kg‚ Isoflurano 1% y Atipamizole 0,15mg/kg como reversor por un cuadro de anorexia y vómitos por periodo prolongado. El examen físico evidenció pérdida ponderal‚ estomatitis ulcerativa y salivación abundante. Se colectaron muestras sanguíneas para hemograma y química; una muestra fecal para coproparasitología y se realizó el descarte de distemper canino (SNAP Test. Los resultados de las pruebas paraclínicas arrojaron lo siguiente: eritrocitosis secundaria por deshidratación como consecuencia

  19. Efeito da adubação e do uso de nematicida na composição química da palma forrageira (Opuntia ficus indica Mill Fertilization and nematicide effects on the chemical composition of cactus forage cv. "Gigante"

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    Margareth Maria Teles

    2004-12-01

    Full Text Available O experimento foi realizado em casa de vegetação do Departamento de Zootecnia da UFRPE, com o objetivo de avaliar o efeito da adubação e de nematicida na composição da palma forrageira cv. gigante, com sintoma de amarelecimento. Para o plantio utilizaram-se cladódios de cor amarela de palma (Opuntia ficus indica, Mill. Cv. Gigante provenientes da Estação Experimental de Caruaru - IPA, onde foi observado o amarelecimento das plantas. Os tratamentos constaram da presença e ausência de macronutrientes, micronutrientes e de nematicida, em delineamento experimental de blocos ao acaso, com quatro repetições. Não foram observadas diferenças significativas entre os tratamentos para teores de matéria seca, de K, de Ca e de Mg. Para teores de N, de P e de S, a análise de variância revelou diferença significativa. A média geral para teores de MS, N, P, K, Ca, Mg e S foi de 7,29; 1,19; 0,17; 3,31; 1,84; 0,59 e 0,17%, respectivamente. A adição de micronutrientes e de nematicida não influenciou os resultados obtidos para teores de N, P, K, Ca, Mg e S. Os teores de nitrogênio, fósforo e potássio foram superiores nos cladódios mais jovens da planta. Os nutrientes nitrogênio, fósforo e enxofre foram os únicos que influenciaram a composição química.This experiment was carried out in a greenhouse at the Animal Science Department/UFRPE and aimed to evaluate the fertilization and nematicide effects on the chemical composition of cactus forage cv. "Gigante" suffering chlorotic symptoms. Chlorotic cladodes of Cactus forage cv. "Gigante" were used as planting material and they were collected at the Caruaru Experimental Station/IPA in the same location where those symptoms were previously observed. The treatments tested the presence or absence of macronutrients, micronutrients, and nematicide. A completely randomized block design was used and the treatments were replicated four times. No significant differences were found for dry matter

  20. Aneurisma venoso gigante de veia ilíaca externa secundário a fístula arteriovenosa traumática: relato de caso Giant external-iliac-vein aneurysm secondary to traumatic arteriovenous fistula: a case report

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    Patrick Bastos Metzger

    2011-09-01

    Full Text Available Aneurismas venosos abdominais são raros. Os localizados nas veias ilíacas externas estão entre os mais infrequentes aneurismas venosos publicados na literatura. Relatamos o caso de um paciente jovem com aneurisma venoso gigante de veia ilíaca externa secundário a uma fístula arteriovenosa adquirida há 20 anos, tratado pelos métodos convencional e endovascular com sucesso.Venous abdominal aneurysms are rare entities, especially at the external iliac vein. We report the case of a young male patient who presented with a giant external-iliac-vein aneurysm secondary to an arteriovenous fistula acquired 20 years earlier, and treated successfully by conventional and endovascular methods in our service.

  1. Association of giant congenital melanocytic nevus, halo nevus and vitiligo in a 75-year-old patient Associação de nevo melanocítico congênito gigante, nevo halo e vitiligo. Relato de caso em paciente de 75 anos

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    Marina Leite da Silveira

    2012-04-01

    Full Text Available A giant congenital melanocytic nevus represents a rare condition. The halo phenomenon may be seen in congenital or acquired melanocytic nevi. In the literature, association of halo nevus and giant congenital melanocytic nevus is rare and the association of both with vitiligo even more rare. A 75-yearold woman at first consultation complained of a hyperchromic bluish-brown hairy macula on the lower back, buttocks and thighs present since birth and an achromic halo of onset three years ago. The histological features were consistent with congenital melanocytic nevus and halo nevus, respectively. After two years the patient developed achromic areas in normal skin, histologically consistent with vitiligo. The authors emphasize the rarity of this triple combination, the patient's age and the absence of malignant degeneration to date.Nevo melanocitico congênito gigante constitui uma condição rara. O fenômeno halo pode ser observado em nevos melanocíticos congênitos ou adquiridos. Na literatura a associação nevo halo e nevo melanocítico congênito gigante é rara e a associação de ambos com vitiligo ainda mais rara. Mulher de 75 anos que à primeira consulta apresentava mácula hipercrômica castanho-azulada pilosa na região lombar, nádegas e coxas desde o nascimento e halo acrômico de aparecimento há 3 anos. Os histológicos foram compatíveis com nevo melanocítico congênito e nevo halo respectivamente. Após dois anos evoluiu com áreas de acromia à distância, com histológico de vitiligo. Os autores ressaltam a raridade desta tripla associação; a idade da paciente e a ausência de degeneração maligna até o presente momento.

  2. Consumo e comportamento ingestivo de caprinos e ovinos alimentados com palma gigante (Opuntia ficus-indica Mill) e palma orelha-de-elefante (Opuntia sp.) - DOI: 10.4025/actascianimsci.v30i2.4684 Intake and ingestive behavior of sheep and goats fed with cactus pear (Opuntia ficus-indica Mill) and prickly pear (Opuntia sp.) - DOI: 10.4025/actascianimsci.v30i2.4684

    OpenAIRE

    Valéria Louro Ribeiro; Mário de Andrade Lira; Adriana Guim; Ângela Maria Vieira Batista; Maria Caroline de Almeida Cavalcanti; Agenor Costa Ribeiro Neto

    2008-01-01

    O presente trabalho teve por objetivo avaliar o consumo e comportamento ingestivo de caprinos e ovinos alimentados com palma Gigante (Opuntia fícus-indica Mill) e palma Orelha-de-elefante (Opuntia sp.). Foram utilizados 20 animais mestiços, sendo dez caprinos e dez ovinos, alojados em galpão coletivo, contidos individualmente por meio de cordas, distribuídos em delineamento inteiramente casualizado, em um arranjo fatorial 2 x 2 (duas espécies animais e duas variedades de palma). As observaçõe...

  3. Relationship between individual growth and statolith increment of jumbo flying squid (Dosidicus gigas) in the waters off Costa Rica%哥斯达黎加外海茎柔鱼个体与耳石间生长关系研究

    Institute of Scientific and Technical Information of China (English)

    贾涛; 陈新军; 李纲; 陆化杰; 刘必林; 马金

    2011-01-01

    根据2009年7-8月哥斯达黎加外海采集的茎柔鱼样本,利用多种统计方法分析了茎柔鱼耳石与个体生长之间的关系.研究认为,耳石各形态参数与胴长(ML)关系显著(P<0.01),其中背侧区间长(DDL)、耳石总长(TSL)与其相关性最大.耳石生长存在两个阶段,当ML小于26~30 cm时,其耳石生长迅速,之后耳石生长减慢.在生长过程中,耳石背区长(DL)、吻区内长(RIL)、DDL生长快于TSL,背侧区夹角(DDA)、吻侧区夹角(RDA)、吻区夹角(RA)则随着ML的增大出现减小趋势,侧区、吻区形态变化显著(P<0.05).耳石形态先于生长速度发生显著性变化,同时各形态参量发生显著性变化时间不同,但形态特征变化主要发生在ML为23~29cm个体中,之后趋于稳定.耳石生长及形态显著性变化与茎柔鱼栖息水层改变相关,茎柔鱼与中上层头足类耳石特征相符.%The growth relationship between statolith and individual of the jumbo flying squid (Dosidicus gigas) sampled in waters off Costa Rica from July to August in 2009 was studied with multiple statistical methods.It was found that the growth relationship between statohth and mantle length (ML) was significant (P < 0.01 ), and the biggest coefficient were ventral dorsal dome length (DDL) and total statolith length (TSL).Statolith growth contained two phases, rapid growth of statolith before ML was smaller than 26 -30 cm, and after that there has a slow growth of statolith.The dorsal length ( DL), rostrum inside length (RIL)and DDL grew faster than the TSL, but the ventral dorsal dome angle (DDA), rostrum lateral dome angle (RDA) and rostrum angle (RA) were reduced during the growth process.So the morphology of lateral dome and rostrum were changed significantly (P < 0.05 ).Although the significant changes of statolith morphology preceded the growth changes and the significant changes of various parts in morphology were not synchronized,the morphological changes

  4. FISH RECRUITMENT FORECASTING FOR DOSIDICUS GIGAS BASED ON MULTI-ENVIRONMENTAL FACTORS IN THE SOUTHEASTERN PACIFIC%基于环境因子的东南太平洋茎柔鱼资源补充量预报模型研究

    Institute of Scientific and Technical Information of China (English)

    汪金涛; 陈新军; 高峰; 雷林

    2014-01-01

    东南太平洋茎柔鱼(Dosidicus gigas)是短生命周期种类,其资源量极易受到海洋环境变化的影响.根据2003-2012年我国鱿钓船在东南太平洋的生产统计数据,以及茎柔鱼栖息地的海表温度(SST)、海面高度(SSH)、叶绿素a浓度(chla)数据,利用相关性分析法分析茎柔鱼资源丰度和补充量(以单位捕捞努力量渔获量为指标,t/d)与栖息海域20°S-20°N、110°W-70°W的SST、SSH、chl a浓度的相关性,获取相关系数大的关键海区位置,同时加入茎柔鱼产卵场、索饵场最适表层水温范围占总面积的比例(分别用Ps、PF表示)两个参数,建立三种基于主要环境因子的误差反向传播(EBP)神经网络资源补充量预报模型,进行了比较.结果表明:茎柔鱼资源丰度与SST、SSH、chl a浓度的相关系数最大值海域为7月份的Point1(13°N,102°W)海区、9月份的Point3(11°N,102°W)海区和3月份的Point5(8°S,107°W)海区;资源补充量与SST、SSH、chla浓度的相关系数最大值海域为6月份的Point2(8°N,103.5°W)海区、2月份的Point4(12°N,97.5°W)海区和10月份的Point6(10°S,93.5°W)海区.EBP神经网络预报模型结果认为:基于产卵环境关键影响因子的方案2(以Point2的SST、Point4的SSH、Point6的chla浓度、Ps作为模型输入因子)和基于全部环境关键影响因子的方案3(以Point1与Point2的SST、Point3与Point4的SSH、Point5与Point6的chl a浓度、Ps、PF作为模型输入因子)的两种神经网络预报模型均方误差较小,其准确率可达90%左右.

  5. Genetic variation analysis on large-sized group and small-sized group of Dosidicus gigas off Peru Exclusive Economic Zones%秘鲁外海茎柔鱼大型群与小型群的遗传变异分析

    Institute of Scientific and Technical Information of China (English)

    刘连为; 陈新军; 许强华; 陆化杰; 王从军

    2014-01-01

    秘鲁海域茎柔鱼(Dosidicus gigas)资源丰富,且存在不同性成熟胴长群体.为了更好地对该海域茎柔鱼资源进行开发管理,本文利用线粒体DNA(mtDNA)与微卫星DNA(SSR)2个分子标记对秘鲁外海茎柔鱼大型群与小型群的遗传变异进行研究.基于Cytb基因序列得到的2个群体总的单倍型数、单倍型多样性指数、核苷酸多样性指数及平均核苷酸差异数分别为19、0.758±0.052、0.002 19±0.001 46和1.586.基于COI基因序列得到的2个群体总的单倍型数、单倍型多样性指数、核苷酸多样性指数及平均核苷酸差异数分别为18、0.707±0.055、0.001 70±0.001 26和1.057.2个群体具有较高的单倍型多样性指数和较低的核苷酸多样性指数.筛选的12个SSR位点均为高度多态性位点(PIC=0.725~0.933),位点DG02、DG07、DG09、DG28、DG36极显著偏离Hardy-Weinberg平衡(P<0.01).基于SSR标记得到的大型群观测杂合度为0.716,期望杂合度为0.868;小型群观测杂合度为0.721,期望杂合度为0.883,二者均具有较高的遗传多样性.基于mtDNA标记的单倍型网络关系图及2个群体间遗传分化系数Fst分析结果显示,2个群体不存在显著的遗传分化(Cytb:Fst=0.004 52,P>0.05;CO Ⅰ:Fst=0.000 89,P>0.05).基于SSR标记也得出相同的结论(Fst=0.002 51,P>0.05).2个群体可能在产卵洄游过程中发生基因交流,建议将秘鲁外海茎柔鱼大型群和小型群看作1个管理单元.

  6. Gigantic neurocysticercosis: diagnosis and therapy;Neurocisticercose gigante: diagnostico e tratamento

    Energy Technology Data Exchange (ETDEWEB)

    Brandao, Rafael Augusto Castro Santiago; Dellaretti Filho, Marcos Antonio, E-mail: rafabrand@hotmail.co [Hospital Santa Casa de Belo Horizonte, MG (Brazil); Nunes, Tadeu Wilker; Totola, Paolo Victor Fernandes; Fonseca, Vinicius Silveira; Souza, Warley Cristiano de [Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil). Faculdade de Medicina

    2010-07-01

    Neurocysticercosis (NCC) is the most common parasitic infection of the nervous system. Considered a global epidemic, the parasite presents, mainly, as asymptomatic. Usually treatment is clinical, but in some selected cases surgical intervention is a good treatment option. In our case, keeping in view the magnitude of intracranial injury, surgery was the therapy chosen. A female patient, aged 54, Mulatto, native of Novo Cruzeiro (MG) and raised in Belo Horizonte. Presented with intense frontal headache, which progressed to right hemiparesis and seizure. Ten days after onset of symptoms, sought the service of emergency care. Tomography (CT) revealed a hypodense area in left frontoparietal region with characteristics of cystic lesion.

  7. Pneumonia complicada por pneumatocele gigante em criança com síndrome da imunodeficência adquirida: importância da fisioterapia respiratória Pneumonia complicated by a giant pneumatocele in a child with acquired immunodeficiency syndrome: importance of chest physiotherapy

    Directory of Open Access Journals (Sweden)

    Silvia Regina M. de Paula

    2010-06-01

    Full Text Available OBJETIVO: Descrever os efeitos do tratamento fisioterapêutico na prevenção de complicações respiratórias de uma criança com síndrome da imunodeficiência adquirida, que apresentava pneumatocele gigante. DESCRIÇÃO DO CASO: Criança com oito anos de idade, do sexo feminino, encaminhada para acompanhamento fisioterapêutico em hospital universitário devido a quadro de hipersecreção pulmonar, histórico de pneumonias e presença de pneumatocele gigante. A conduta fisioterapêutica incluiu técnicas de higiene brônquica ativa, envolvendo fluxo aéreo expiratório, com o intuito de promover a desobstrução pulmonar sem causar risco de complicações à criança. O seguimento foi multiprofissional e direcionado à prevenção de infecções recorrentes e de ruptura da bolha, que tornariam necessária a internação hospitalar. Durante o acompanhamento, o quadro pulmonar manteve-se estável, sem aumento ou ruptura da pneumatocele, radiograficamente visível. COMENTÁRIOS: A atuação da fisioterapia respiratória nos casos de pneumatocele gigante não está definida na literatura. Não há, até o momento, evidências de seus efeitos benéficos, bem como diretrizes a respeito dos métodos mais eficientes e seguros. Ao contrário, muito se discute sobre os riscos e complicações decorrentes dessa intervenção. No presente caso, a assistência fisioterapêutica regular foi importante para garantir a estabilidade do quadro pulmonar da criança, sendo necessários estudos com desenho metodológico apropriado para verificação de eficácia clínica.OBJECTIVE: To describe the effects of chest physiotherapy in preventing respiratory complications in a child with acquired immunodeficiency syndrome and a giant pneumatocele. CASE DESCRIPTION: An eight-year-old female child was sent to the physiotherapy service of a university hospital due to pulmonary hypersecretion, repeated pneumonias and presence of a giant pneumatocele. The physiotherapy

  8. Consumo e comportamento ingestivo de caprinos e ovinos alimentados com palma gigante (Opuntia ficus-indica Mill e palma orelha-de-elefante (Opuntia sp. = Intake and ingestive behavior of sheep and goats fed with cactus pear (Opuntia ficus-indica Mill and prickly pear (Opuntia sp.

    Directory of Open Access Journals (Sweden)

    Agenor Costa Ribeiro Neto

    2008-04-01

    Full Text Available O presente trabalho teve por objetivo avaliar o consumo e comportamento ingestivo de caprinos e ovinos alimentados com palma Gigante (Opuntia ficus-indica Mill e palma Orelhade-elefante (Opuntia sp.. Foram utilizados 20 animais mestiços, sendo dez caprinos e dez ovinos, alojados em galpão coletivo, contidos individualmente por meio de cordas, distribuídos em delineamento inteiramente casualizado, em um arranjo fatorial 2 x 2 (duas espécies animais e duas variedades de palma. As observações comportamentais foram realizadas em intervalos de 5 min. por um período de 24h. Os consumos de matéria seca, extrato etéreo, fibra em detergenteácido, carboidratos totais e carboidratos não-fibrosos foram menores (p 0,05 sobre o tempo gasto comalimentação e eficiência de alimentação. O tempo gasto com ruminação foi maior para a dieta com palma Gigante, consequentemente os animais da dieta com palma Orelha-de-elefante permaneceram mais tempo em ócio. Comparando as espécies caprina e ovina, verificou-se que aeficiência de ruminação, tanto de MS quanto de FDN, foi maior para a espécie ovina. Os animais gastaram mais tempo ruminando deitados do que em pé, mas não foi verificada diferença quanto ao lado escolhido para deitarem.The objective of this study was to evaluate the intake and ingestive behavior of sheep and goats fed with cactus pear (Opuntia ficus-indica Mill and prickly pear (Opuntia sp.. Twenty crossbred animals – 10 sheep and 10 goats – were used. They were lodged in a collective shed, contained individually with ropes, distributed using a completely randomized design, and treated with a 2 x 2 factorial arrangement (2 animal species and 2 varieties of cactus. Behavioralobservations were made at five-minute intervals during a 24-hour period. Dry matter, ether extract, acid detergent fiber, total carbohydrate and non-fibrous carbohydrate intake were reduced (p 0.05 on feeding time and feeding efficiency. The time spent with

  9. Complex paraclinoidal and giant cavernous aneurysms: importance of preoperative evaluation with temporary balloon occlusion test and SPECT Aneurismas paraclinoideos complexos e cavernosos gigantes: importância da avaliação pré-operatória com teste de oclusão temporária com balão e SPECT

    Directory of Open Access Journals (Sweden)

    Antônio Aversa do Souto

    2006-09-01

    Full Text Available In the treatment of complex paraclinoidal and giant cavernous aneurysms, preservation of the patency of the internal carotid artery (ICA is not always possible, and therapeutic occlusion of the carotid is still an important option for their management. A complete preoperative evaluation of the carotid reserve circulation, including the use of temporary balloon occlusion test and single photon emission computerized tomography (SPECT should be included in the current paradigms of paraclinoidal and intracavernous aneurysms management. We present a series of fifteen patients with sixteen giant or complex carotid cavernous or ophthalmic aneurysms that were treated following a protocol for our preoperative decision-making analysis. Extracranial to intracranial saphenous vein bypass was reserved to the cases where carotid occlusion would be associated with high risk of ischemic complications and was performed in three patients. Besides the difficulties in dealing with those complex aneurysms, good clinical outcome was possible in our experience with the designed paradigm.No tratamento de aneurismas paraclinoideos complexos e cavernosos gigantes, a preservação da patência vascular nem sempre é possível, e a oclusão terapêutica da carótida ainda é uma opção importante no seu manejo. Uma avaliação pré-operatória completa da reserva circulatória carotídea, incluindo o uso do teste de oclusão temporária por balão associado à tomografia computadorizada por emissão de fóton único (SPECT podem ser de grande utilidade para definir a opção terapêutica a ser adotada. Nós apresentamos uma série de quinze pacientes com dezesseis aneurismas complexos ou gigantes do segmento oftálmico e cavernoso da artéria carótida, que foram tratados de acordo com determinado protocolo de investigação pré-operatória. Anastomose com enxerto de veia safena entre a carótida extra e intracraniana foi reservada para os casos em que a oclusão carot

  10. [Biochemistry and functional characterization of squid mantle meat (Dosidicus gigas)].

    Science.gov (United States)

    Abugoch, L; Guarda, A; María Pérez, L; Isabel Donghi, M

    2000-12-01

    A study for the characterization of frozen giant squid mantle (meat) protein stored at -25 degrees C for 8 month was started. In the present research, the following functional properties were investigate: emulsifying, water holding and gel forming capacities. Optimal conditions for the separation and differentiation of miofibrillar and sarcoplasmatic proteins were also studied. It was found that the unfrozen giant squid mantle meat es capable of emulifying 2.817,4 g of oil/g of protein and holding capacity was 3.64 g of water/g of protein. Related to the gel forming capacity, it was not obtain, probably due to excessive storage of the meat. With regard to miofibrilar protein obtention of the squid mantle meat, it was found that two low ionic strength washings (I = 0.05), the sarcoplasmic proteins were practically eliminated from the protein matrix. The differentiation of miofibrilar and sarcoplasmatic proteins was obtained by PAGE-SDS of the squid mantle meat extracted at two different ionic strength (I = 0.05 and I = 0.5). This work demonstrates that the giant squid mantle protein has a high emulsifying and water holding capacity, and it can be used, as a raw material, for the improvement of sausage products. About the gelling products, more studies will be necessary with fresh squid mantle meat to conclude about this functional property. PMID:11464670

  11. Effects of El Ni(n)o/La Ni(n)a on distribution of fishing ground of Dosidicus gigas off Peru waters%厄尔尼诺和拉尼娜事件对秘鲁外海茎柔鱼渔场分布的影响

    Institute of Scientific and Technical Information of China (English)

    徐冰; 陈新军; 田思泉; 钱卫国; 刘必林

    2012-01-01

    Jumbo flying squid, Dosidicus gigas, which is distributed in the waters off Peru, and is an important economic squid, has been caugth by many countries in the world. The study on large-scale environmental change on distribution of D. gigas is important for scientifically fishing and mastering the changing regularity. In this study, the fishing data from Chinese squid jigging fleets, sea surface temperature (SST) and the water temperatures data from 0 to 200 m (sea temperature at 15 meters layer, T15; sea temperature at 50 meters layer, T50; sea temperature at 100 meters layer, T100; sea temperature at 200 meters layer, T200) are used to analyze the large-scale environmental changes on distribution of D. gigas under the different conditions of El Niflo and La Nina. The result indicated that under El Nino, the fishing ground was around 79°-84°W and 10°-17°S with the optimal SST range of 19-22 °C during October to December in 2006 and 2009, while under La Nina during October to December in 2007, the fishing ground was located around 81°-85°W and 10°-14°S with the optimal SST range of 17-20 ℃. The main fishing ground in the year of La Nina moved to further northward for 1-2° latitude and its average SST decreased 2 °C compared with that in the years of El Nino. The distribution of water layers temperature indicated that T15 and T50 in 2007 was significantly higher than that in 2006 with the maximum temperature difference of 6-9 ℃, and but T100and T200 in 2007 was little higher than that in 2006 with the maximum temperature difference of 1 °C. The vertical temperature structure indicated that the upwelling is not formed in fishing ground from October to December in 2006, and the fishing ground was distributed at the mixed region between oceanic water and coastal water. But the strong upwelling is formed in coastal waters from October to December in 2007, and the fishing ground was distributed at the intensive isotherm around the upwelling area. Moreover

  12. Astrocitoma subependimário de células gigantes em pacientes com esclerose tuberosa: achados em ressonância magnética de dez casos Subependymal giant cell astrocytoma in patients with tuberous sclerosis: magnetic resonance imaging findings in ten cases

    Directory of Open Access Journals (Sweden)

    Karina Takata

    2007-06-01

    Full Text Available OBJETIVO: Relatar os achados de ressonância magnética (RM em 10 casos de astrocitoma subependimário de células gigantes (ASCG em pacientes com esclerose tuberosa (ET. MÉTODO: Foram estudados de forma retrospectiva 10 pacientes com ET e diagnóstico histológico comprovado de ASCG. Quatro pacientes eram do sexo masculino e seis do feminino, com idade média de 15,7 anos. Todos os pacientes foram investigados com RM, sendo os exames revisados por dois radiologistas, havendo decisão por consenso sobre os achados de imagem. Foram analisados os seguintes achados: localização, dimensões, intensidade de sinal em T1/T2, realce pós-contraste e outros achados associados. RESULTADOS: Todos os pacientes apresentaram lesão única sugestiva de ASCG, medindo entre 1,5 cm e 8 cm em seu maior diâmetro. Oito lesões foram encontradas junto ao forame de Monro (80% e duas adjacentes ao corpo do ventrículo lateral (20%. Os tumores apresentavam nas imagens pesadas em T1 médio sinal (70% e em T2 alto sinal (100%, com realce intenso após a administração do gadolínio (100%. CONCLUSÃO: Os astrocitomas subependimários de células gigantes em pacientes com ET em geral apresentam-se como lesão única próxima ao forame de Monro, com médio sinal nas imagens ponderadas em T1, alto sinal em T2 e realce intenso após a administração de contraste.OBJECTIVE: To report the magnetic resonance imaging (MRI findings in 10 patients with subependimal giant cell astrocytoma (SGCA and tuberous sclerosis (TS. METHOD: Ten patients were retrospectively studied, presenting TS and histologically proven SGCA. Four patients were male and six female, with mean age 15.7 years. All patients underwent MRI, which was analyzed by two radiologists, final diagnosis was reached by consensus. The following findings were studied: topography, size, signal intensity on T1/T2-weighted images, contrast enhancement and associated findings. RESULTS: All patients presented a single lesion

  13. Perfluoroctano líquido como tamponante vitreorretiniano de curta duração no pós-operatório de portadores de descolamento de retina por ruptura gigante Perfluoroctane liquid as a short-term vitreous-retinal tamponade in the postoperative period in patients with retinal detachment due to giant tears

    Directory of Open Access Journals (Sweden)

    Marcelo Carvalho Ventura

    2007-06-01

    Full Text Available OBJETIVOS: Relatar os resultados de vitrectomia via pars plana com utilização de perfluocarbono líquido (Perfluoroctano-Ophtalmos®, como tamponante vítreo-retiniano de curta duração, no pós-operatório de portadores de descolamento de retina, por ruptura gigante. MÉTODOS: Estudaram-se dez desses pacientes. Todos os casos eram complicados por vitreorretinopatia proliferativa grau B ou pior com rupturas que variavam em extensão de 90º a 210º. O perfluorocarbono líquido foi introduzido, por via pars plana, com o volume necessário para ultrapassar o limite posterior da ruptura, permanecendo no pós-operatório por cinco dias, estando os pacientes em decúbito dorsal. Após esse período submetiam-se a segunda intervenção para troca do perfluorocarbono líquido para gás ou óleo de silicone. RESULTADOS: Após período de acompanhamento médio de 16,2 ± 12,4 meses (2 a 43 meses, 80% das retinas estavam aplicadas, sendo necessária a repetição desta técnica em 1 caso (10% caso e em 2 casos (20% não houve reaplicação da retina por vitreorretinopatia avançada. Houve melhora da acuidade visual em 5 casos (50%. CONCLUSÃO: Observaram-se bons resultados quanto à aplicação da retina (80% e melhora da acuidade visual (50% quando do uso do perfluorocarbono líquido como tamponante vitreorretiniano de curta duração no pós-operatório de cirurgias de descolamento de retina por rupturas gigantes.PURPOSE: To report pars plana vitrectomy results of intravitreous use of liquid perfluorocarbon as a short-term postoperative tamponade in retinal detachment due to giant tears in a series of patients. METHODS: Ten of those patients, all of them complicated by proliferative vitreoretinopathy grade B or worse, with tear extension varying from 90º to 210º were studied. Perfluorocarbon liquid was injected via pars plana until the posterior tear limit, remaining in the postoperative period during five days, with the patients in supine position

  14. Aneurisma gigante do segmento intracavernoso da carótida interna associado a doença renal policística autossômica dominante: relato de caso Giant aneurysm of the intracavernous internal carotid artery associated with autosomal dominant polycystic kidney disease: case report

    Directory of Open Access Journals (Sweden)

    Keven F. Ponte

    2006-09-01

    Full Text Available Apresenta-se o caso de mulher de 60 anos com doença renal policística autossômica dominante (DRPAD que desenvolveu quadro de cefaléia e oftalmoplegia completa à direita. A TC levantou a hipótese de um aneurisma gigante do segmento intracavernoso da carótida interna direita, o que foi confirmado pela arteriografia. Realizou-se, então, tratamento endovascular por oclusão do vaso parental com molas destacáveis no segmento supraclinóideo. A paciente evoluiu com a interrupção da cefaléia e com redução parcial da ptose e da oftalmoplegia. Neste artigo, enfatiza-se a relação entre DRPAD e aneurismas intracranianos. Comenta-se a história natural dos aneurismas originados no segmento intracavernoso da artéria carótida interna e comparam-se as opções terapêuticas no manejo destas lesões.We report the case of a 60 years-old woman with autosomal dominant polycystic kidney disease (ADPKD that presented with headache and right complete ophthalmoplegia. The CT scan raised the possibility of a giant aneurysm of the right intracavernous internal carotid artery, confirmed by angiography. The patient underwent endovascular occlusion of parent vessel with detachable coils, then she presented interruption of headache and partial recovery of ptosis and ophthalmoplegia. We emphasize the relationship between ADPKD and intracranial aneurysms. We also discuss the natural history and compare the therapeutic options for the management of giant aneurysms of the cavernous portion of the carotid artery.

  15. Composição físico-química e potencial para ensilagem do sorgo-de-guiné gigante em seis épocas de semeadura Physical-chemical composition and ensiling potential of Giant Guinea sorghum in six different sowing dates

    Directory of Open Access Journals (Sweden)

    Gustavo Pavan Mateus

    2005-09-01

    Full Text Available A ausência de culturas alternativas para o cultivo de outono-inverno é um entrave nos sistemas de produção agrícola, principalmente em regiões de inverno seco. O objetivo deste trabalho foi avaliar a produção de forragem, o potencial para ensilagem e a composição química do sorgo-de-guiné gigante (Sorghum bicolor subsp. bicolor raça guinea, de acordo com a época de semeadura. O delineamento experimental utilizado foi o de blocos casualizados, com quatro repetições e seis épocas de semeadura. Verificou-se antecipação dos estádios de desenvolvimento da planta, à medida que houve atraso na semeadura, em virtude de a espécie apresentar sensibilidade ao fotoperíodo. Semeaduras tardias, apesar de menor produtividade, proporcionaram forragem com características químico-bromatológicas melhores. Diante da boa produção de matéria seca e seu potencial para ensilagem, esse genótipo é uma boa opção a ser utilizada.The lack of alternative crops for fall-winter cultivation is a drawback in the utilization of agricultural production systems, especialy in regions with dry winters. The purpose of this study was to evaluate the potential of Giant Guinea sorghum (Sorghum bicolor subsp. bicolor guinea race for forage production, ensiling and plant chemical composition, in different sowing dates. The experimental design was a randomized block, with four replications, and six sowing dates. Although sowing was late, Giant Guinea sorghum showed anticipation in development stages due to sensibility to photoperiod; its dry matter production was low, nevertheless the species presented a better quality of forage mass. Due to the considerable capacity of dry matter production and ensiling potential, this species is a good option.

  16. Gigantism in tadpoles of the Neogene frog Palaeobatrachus

    Czech Academy of Sciences Publication Activity Database

    Roček, Zbyněk; Böttcher, R.; Wassersug, R.

    2006-01-01

    Roč. 32, č. 4 (2006), s. 666-675. ISSN 0094-8373 R&D Projects: GA AV ČR IAA3013206 Institutional research plan: CEZ:AV0Z30130516 Keywords : Amphibia * Anura * Neogene * Germany * development Subject RIV: EG - Zoology Impact factor: 2.405, year: 2006

  17. A rare gigantic solitary cysticercosis pseudotumour of the neck

    OpenAIRE

    Uledi, Seif J

    2010-01-01

    Cysticercosis is one of the ancient parasitic infections and endemic in many parts of the developing world. Humans acquire cysticercosis when they ingest pork tapeworm eggs either through faecal-oral route by eating faecally contaminated food or by auto infection. The clinical picture largely depends on the location of larval encystment. Neurocysticercosis is the most common form of presentation. Solitary extra neural lesions are quite rare and fairly small in size. We present a very unique c...

  18. Nurka surutud gigant näitab hambaid / Edith Steinberg

    Index Scriptorium Estoniae

    Steinberg, Edith

    2005-01-01

    Maailma suurim autotootja General Motors teatas aasta lõpus, et vabastab töölt 30 000 inimest ja tosin Põhja-Ameerika tehast hakkavad tööle osalise koormusega. Hoolimata asjaolust, et korporatsioonil on ligi 75 miljardi dollariline võlg, püüab GM-i tegevjuht Rick Wagoner avalikkust rahustada väitega, et hetkel on ettevõttel raha 22 miljardit ja pankrotti välja kuuluta pole plaanis. Vt. samas: Autsaiderite võidukäik; Koledada autod ja valed otsused

  19. Gigantic particle collision machine does "mini Big Bangs"

    CERN Multimedia

    2007-01-01

    "The world's largest machine is reputed to be the Large Hadron Collider (LHC) at CERN in Geneva and everything about it is big. Designed to carry out high energy particle collisions, when completed next year, one of the collider's experiments includes a 10'000 ton detector." (1/2 page)

  20. Gigantic Enhancement in Sensitivity Using Schottky Contacted Nanowire Nanosensor

    KAUST Repository

    Wei, Te-Yu

    2009-12-09

    A new single nanowire based nanosensor is demonstrated for illustrating its ultrahigh sensitivity for gas sensing. The device is composed of a single ZnO nanowire mounted on Pt electrodes with one end in Ohmic contact and the other end in Schottky contact. The Schottky contact functions as a "gate" that controls the current flowing through the entire system. By tuning the Schottky barrier height through the responsive variation of the surface chemisorbed gases and the amplification role played by the nanowire to Schottky barrier effect, an ultrahigh sensitivity of 32 000% was achieved using the Schottky contacted device operated in reverse bias mode at 275 °C for detection of 400 ppm CO, which is 4 orders of magnitude higher than that obtained using an Ohmic contact device under the same conditions. In addition, the response time and reset time have been shortened by a factor of 7. The methodology and principle illustrated in the paper present a new sensing mechanism that can be readily and extensively applied to other gas sensing systems. © 2009 American Chemical Society.

  1. Síndrome de cauda equina por hernia discal gigante

    OpenAIRE

    Barriga, A.; Villas, C.

    2002-01-01

    La aparición de forma aguda o rápidamente progresiva de un cuadro de ciatalgia bilateral, con disminución completa de la fuerza de los pies y ocasionalmente del cuádriceps acompañado de retención y/o incontinencia urinaria e hipoestesia en silla de montar debe hacernos sospechar de la existencia de un síndrome de compresión de la cola de caballo, generalmente a causa de una hernia discal. Se trata de una urgencia quirúrgica absoluta en la patología del raquis. La identificación del síndrom...

  2. Gigantism, temperature and metabolic rate in terrestrial poikilotherms

    OpenAIRE

    Makarieva, Anastassia M.; Gorshkov, Victor G.; Li, Bai-Lian

    2005-01-01

    The mechanisms dictating upper limits to animal body size are not well understood. We have analysed body length data for the largest representatives of 24 taxa of terrestrial poikilotherms from tropical, temperate and polar environments. We find that poikilothermic giants on land become two–three times shorter per each 10 degrees of decrease in ambient temperature. We quantify that this diminution of maximum body size accurately compensates the drop of metabolic rate dictated by lower tempera...

  3. Gigantism, temperature and metabolic rate in terrestrial poikilotherms.

    Science.gov (United States)

    Makarieva, Anastassia M; Gorshkov, Victor G; Li, Bai-Lian

    2005-11-01

    The mechanisms dictating upper limits to animal body size are not well understood. We have analysed body length data for the largest representatives of 24 taxa of terrestrial poikilotherms from tropical, temperate and polar environments. We find that poikilothermic giants on land become two-three times shorter per each 10 degrees of decrease in ambient temperature. We quantify that this diminution of maximum body size accurately compensates the drop of metabolic rate dictated by lower temperature. This supports the idea that the upper limit to body size within each taxon can be set by a temperature-independent critical minimum value of mass-specific metabolic rate, a fall below which is not compatible with successful biological performance. PMID:16191647

  4. Pseudoquiste pancreático gigante Giant Pancreatic Pseudocyst

    Directory of Open Access Journals (Sweden)

    Javier Pereda Rodríguez

    2011-09-01

    Full Text Available Presentamos el caso de un hombre de 54 años de edad que acude a Urgencias con historia previa de dolor abdominal de cuatro semanas de evolución, pérdida de peso de 3 Kg y la presencia de una masa epigástrica palpable. En la radiografía convencional de abdomen se observó la presencia de una masa ocupante de espacio a nivel del epigastrio. El estudio ecográfico mostró una gran masa quística en la región epigástrica, que comprimía el estómago y desplazaba el colon transverso en sentido caudal, sugestiva de pseudoquiste pancreático. Éste fue demostrado en el estudio tomográfico. Se realizó una revisión bibliográfica de los hallazgos de imagen específicos y su diagnóstico diferencial. El conocimiento de esta entidad, así como de sus características ecográficas y topográficas, permite el diagnóstico y tratamiento precoz, evitando procederes invasivos.We report the case of a 54-year-old male who presented at the Emergency Department with a four-week history of abdominal pain, weight loss of 3 kg and a palpable epigastric mass. On a plain abdominal X-ray, a space-occupying lesion was observed in the epigastrium. An abdominal ultrasound examination showed a large cystic mass in thee epigastric region, compressing the stomach and displacing the transverse colon caudally, suggestive of a large pancreatic pseudocyst. A Giant Pancreatic Pseudocyst was confirmed by a contrast-enhanced Computed Tomography (CT. A review of the literature about specific imaging findings and differential diagnosis was made. An understanding of this entity and of its characteristic findings on ultrasound and CT allows an early diagnosis and treatment, thus avoiding invasive procedures.

  5. Pseudoquiste pancreático gigante Giant Pancreatic Pseudocyst

    OpenAIRE

    Javier Pereda Rodríguez; Javier González Llórente

    2011-01-01

    Presentamos el caso de un hombre de 54 años de edad que acude a Urgencias con historia previa de dolor abdominal de cuatro semanas de evolución, pérdida de peso de 3 Kg y la presencia de una masa epigástrica palpable. En la radiografía convencional de abdomen se observó la presencia de una masa ocupante de espacio a nivel del epigastrio. El estudio ecográfico mostró una gran masa quística en la región epigástrica, que comprimía el estómago y desplazaba el colon transverso en sentido caudal, s...

  6. Acromegalic gigantism, physicians and body snatching. Past or present?

    NARCIS (Netherlands)

    W.W. de Herder (Wouter)

    2012-01-01

    textabstractThe skeletons of 2 famous acromegalic giants: Charles Byrne (1761-1783) and Henri Cot = Joseph Dusorc (1883-1912) and the embalmed body of the famous acromegalic giant Édouard Beaupré (1881-1904) all ended up in the medical collections of museums despite the fact that these patients had

  7. Claudio Gigante - Dirk Vanden Berghe (eds., Il romanzo del Risorgimento

    Directory of Open Access Journals (Sweden)

    Marina Polacco

    2014-05-01

    Full Text Available A  lungo il dibattito storiografico sul Risorgimento è stato dominato dalla contrapposizione tra la retorica patriottica (la celebrazione della nascita della patria, il culto dei martiri e degli eroi risorgimentali e la denuncia dei limiti e delle inadempienze del processo di unificazione (la critica del Risorgimento come rivoluzione mancata, il riconoscimento della sostanziale immobilità delle strutture di potere, la questione meridionale. Parallelamente, in campo specificamente letterario il filone d’indagine più praticato è stato quello relativo alla narrativa ‘antirisorgimentale’ – sulla scia della celebre definizione di ‘romanzo antistorico’ coniata da Spinazzola a proposito di tre testi fondamentali nella rappresentazione del periodo storico in questione (e cioè I Vicerè, I vecchi e i giovani e Il gattopardo.

  8. Glassy protein dynamics and gigantic solvent reorganization energy of plastocyanin

    CERN Document Server

    LeBard, David N

    2007-01-01

    We report the results of Molecular Dynamics simulations of electron transfer activation parameters of plastocyanin metalloprotein involved as electron carrier in natural photosynthesis. We have discovered that slow, non-ergodic conformational fluctuations of the protein, coupled to hydrating water, result in a very broad distribution of donor-acceptor energy gaps far exceeding that observed for commonly studied inorganic and organic donor-acceptor complexes. The Stokes shift is not affected by these fluctuations and can be calculated from solvation models in terms of the response of the solvent dipolar polarization. The non-ergodic character of large-amplitude protein/water mobility breaks the strong link between the Stokes shift and reorganization energy characteristic of equilibrium (ergodic) theories of electron transfer. This mechanism might be responsible for low activation barriers in natural electron transfer proteins characterized by low reaction free energy.

  9. Resistência induzida ao pulgão-gigante-do-pinus (Hemiptera: Aphididae em plantas de Pinus taeda adubadas com silício Induced resistance effect to the giant conifer aphid (Hemiptera:Aphididae in silicon fertilized plants of Pinus taeda

    Directory of Open Access Journals (Sweden)

    Joelma Melissa Malherbe Camargo

    2008-12-01

    Full Text Available Este trabalho objetivou avaliar o efeito da aplicação de silício na indução de resistência de Pinus taeda L. ao pulgão-gigante-do-pinus Cinara atlantica (Wilson. Foram realizados testes com chance de escolha em plantas com e sem aplicação de silício, onde foi avaliada a preferência e a capacidade reprodutiva dos afídeos. Os testes foram realizados em laboratório (T: 20ºC; UR: 70%; fotofase: 12 horas, em delineamento experimental inteiramente casualizado, com três tratamentos e dez repetições. Os tratamentos foram: T1 - (sem aplicação de silício; T2 - uma dose de 0,01g de silício e T3 - quatro doses de 0,01g de silício, com intervalos de cinco dias entre as aplicações. As aplicações das doses foram via solo. Vinte dias após a aplicação, realizaram-se os testes de preferência e de capacidade reprodutiva com chance de escolha, utilizando-se como arena placas de Petri com ramos de pinus e gaiolas de PVC com mudas de pinus em tubetes. Em cada arena foram liberados 20 pulgões adultos. As avaliações em placas de Petri foram realizadas aos 40 e 90 minutos e às 4, 12, 18, 24, 36, 48 e 72 horas após a liberação dos insetos; em gaiolas as avaliações foram realizadas no primeiro, segundo, terceiro, quarto e sétimo dia, estendendo-se este período por mais três semanas. A aplicação de silício influenciou negativamente a preferência e a capacidade reprodutiva de C. atlantica.This research aimed to study the effect of silicon as a resistance inducer in P. taeda L. to C. atlantica (Wilson. Preference and reproductive rate tests were performed in plants of P. taeda with and without silicon application. The experiment was carried out in controlled environmental chamber (T: 20ºC; UR: 70%; fotofase: 12h, in a completely random design, and consisted of three treatments and ten replications. The treatments were: T1- substratum standard (without silicon application, T2 - substratum standard + one dose of 0,01g de silicon

  10. Tratamiento quirúrgico del granuloma central de células gigantes: estudio y seguimiento de 10 casos. Revisión de la literatura Surgical treatment of central giant-cell granuloma: Study and follow-up of 10 cases. Literature review

    Directory of Open Access Journals (Sweden)

    M. Fernández Ferro

    2011-03-01

    Full Text Available Objetivos: El granuloma central de células gigantes (GCCG es una lesión benigna, no odontogénica, de origen incierto y con unas características epidemiológicas, clínicas y radiológicas bien conocidas. El objetivo de nuestro estudio es recoger, describir y evaluar nuestra experiencia en el tratamiento quirúrgico de este tipo de lesiones y su seguimiento, haciendo especial hincapié en los datos clínicos y radiológicos así como en las complicaciones y recidivas tras el mismo. Se realiza, además, una revisión de la literatura científica. Material y métodos: Se trata de un estudio retrospectivo de 10 casos intervenidos en nuestro centro entre los años 1998 y 2008. La edad media fue de 35 años. Se describen las características clínicas y radiológicas de cada caso, así como la mejor opción de tratamiento quirúrgico, evaluación del mismo, complicaciones y recidivas. Resultados: Se realiza tratamiento quirúrgico en los 10 casos, de los cuales 4 presentan características clínicas y radiológicas de agresividad. El tratamiento de elección es la escisión y curetaje hasta hueso sano en el 60%, y en el resto resección amplia con márgenes. El periodo de seguimiento medio es de 6,7 años, con una tasa de recidiva del 1%. Conclusión: En nuestra experiencia coincidimos con la mayoría de los autores al considerar el tratamiento quirúrgico de elección en el momento actual, señalando la importancia de realizar un adecuado diagnóstico y una clara diferenciación entre lesiones agresivas y no agresivas para determinar la radicalidad de la intervención.Objectives: Central giant-cell granuloma (CGCG is a benign, non-odontogenic lesion of uncertain origin and well-known epidemiologic, clinical and radiologic characteristics. The aim of this study was to compile, describe and evaluate the authors' experience with the surgical treatment of CGCG and its follow-up, with special emphasis on clinical and radiologic data, complications and

  11. Influência do período de cultivo do capim-pé-de-galinha-gigante (Eleusine coracana na fitorremediação de solo contaminado com picloram Influence of Eleusine coracana cultivation period on phytoremediation of soil contaminated with picloram

    Directory of Open Access Journals (Sweden)

    M.L. Carmo

    2008-01-01

    Full Text Available O objetivo deste trabalho foi avaliar a influência do período de cultivo do capim-pé-de-galinha-gigante (Eleusine coracana sobre a fitorremediação de solo contaminado com picloram. O experimento foi conduzido em casa de vegetação, no período de setembro de 2006 a fevereiro de 2007. Os tratamentos foram compostos pela combinação entre quatro períodos de cultivo da espécie vegetal Eleusine coracana (0, 60, 80 e 100 dias e três doses do picloram (0, 80 e 160 g ha-1, totalizando 12 tratamentos. O delineamento experimental utilizado foi o inteiramente casualizado em esquema fatorial 4 x 3, com quatro repetições. Como substrato para o crescimento das plantas, utilizaram-se amostras de solo classificado como Latossolo Vermelho eutroférrico. Ao término do período estabelecido de atuação da espécie fitorremediadora, efetuou-se a semeadura das espécies bioindicadoras da presença do picloram: tomate (cultivar Santa Clara e soja (cultivar Monsoy 6101. As espécies bioindicadoras demonstraram alta sensibilidade à presença do picloram no solo, sendo inviável o cultivo dessas culturas em áreas contaminadas com esse herbicida sem a execução de algum procedimento remediador. O cultivo prévio de E. coracana por 60 dias reduziu a contaminação do solo com picloram e permitiu crescimento inicial satisfatório das plantas de soja e de tomate cultivadas em solo que recebeu previamente a aplicação de até 160 g ha-1 de picloram; contudo, essas plantas bioindicadoras apresentaram ainda sintomas visíveis de intoxicação do herbicida.The objective of this study was to evaluate the influence of Eleusine coracana cultivation period on phytoremediation of soil contaminated with picloram. The experiment was carried out at a greenhouse from September 2006 to February 2007, in 12 treatments combining four Eleusine coracana cultivation periods ((0, 60, 80 and 100 days and three picloram rates (0, 80 and 160 g ha-1, arranged in a completely

  12. Morfometría comparada de los estatolitos del calamar Loligo gahi d'Orbigny, 1835 (Cephalopoda: Loliginidae) del norte de Perú e islas Falkland

    OpenAIRE

    Vega, Marco A.; Rocha, Francisco; Osorio, Cecilia

    2001-01-01

    A total of 241 statoliths were analyzed: 141 belonging to Loligo gahi from the Northern Perú (70 left statoliths and 71 right statoliths) corresponding to 34 males and 47 females, and 100 from the Falkland Islands (50 left statoliths and 50 right statoliths) corresponding to 35 males and 23 females. Total length (TL), dome length (DL) and face length (FL) were measured, determining in each specimen the mantle dorsal length (ML) and sex. The measures became quotients of ML, and were compared u...

  13. Consumo e comportamento ingestivo de caprinos e ovinos alimentados com palma gigante (Opuntia ficus-indica Mill e palma orelha-de-elefante (Opuntia sp. - DOI: 10.4025/actascianimsci.v30i2.4684 Intake and ingestive behavior of sheep and goats fed with cactus pear (Opuntia ficus-indica Mill and prickly pear (Opuntia sp. - DOI: 10.4025/actascianimsci.v30i2.4684

    Directory of Open Access Journals (Sweden)

    Valéria Louro Ribeiro

    2008-08-01

    Full Text Available O presente trabalho teve por objetivo avaliar o consumo e comportamento ingestivo de caprinos e ovinos alimentados com palma Gigante (Opuntia fícus-indica Mill e palma Orelha-de-elefante (Opuntia sp.. Foram utilizados 20 animais mestiços, sendo dez caprinos e dez ovinos, alojados em galpão coletivo, contidos individualmente por meio de cordas, distribuídos em delineamento inteiramente casualizado, em um arranjo fatorial 2 x 2 (duas espécies animais e duas variedades de palma. As observações comportamentais foram realizadas em intervalos de 5 min. por um período de 24h. Os consumos de matéria seca, extrato etéreo, fibra em detergente ácido, carboidratos totais e carboidratos não-fibrosos foram menores (p 0,05 sobre o tempo gasto com alimentação e eficiência de alimentação. O tempo gasto com ruminação foi maior para a dieta com palma Gigante, consequentemente os animais da dieta com palma Orelha-de-elefante permaneceram mais tempo em ócio. Comparando as espécies caprina e ovina, verificou-se que a eficiência de ruminação, tanto de MS quanto de FDN, foi maior para a espécie ovina. Os animais gastaram mais tempo ruminando deitados do que em pé, mas não foi verificada diferença quanto ao lado escolhido para deitarem.The objective of this study was to evaluate the intake and ingestive behavior of sheep and goats fed with cactus pear (Opuntia ficus-indica Mill and prickly pear (Opuntia sp.. Twenty crossbred animals – 10 sheep and 10 goats – were used. They were lodged in a collective shed, contained individually with ropes, distributed using a completely randomized design, and treated with a 2 x 2 factorial arrangement (2 animal species and 2 varieties of cactus. Behavioral observations were made at five-minute intervals during a 24-hour period. Dry matter, ether extract, acid detergent fiber, total carbohydrate and non-fibrous carbohydrate intake were reduced (p 0.05 on feeding time and feeding efficiency. The time

  14. A correlação entre exames de imagem, características anatomopatológicas e imunoistoquímicas num caso de tumor de céculas gigantes e agressivo do osso, com localização em coluna Correlation between imaging tests and anatomicopathological and immunohistochemical characteristics in a case of severe giant cell tumor of bone located at spine

    Directory of Open Access Journals (Sweden)

    Claudia Regina Gomes Cardim Mendes de Oliveira

    2006-01-01

    Full Text Available O Tumor de Células Gigantes (TGC, é um tumor benigno, com ocorrência de recidiva em cerca de 20-34% dos casos. A localização habitual é na epífise dos ossos longos. O objetivo deste trabalho é relatar um caso de TGC em vértebra, com diagnóstico inicial de Cisto Ósseo Aneurismático (COA, e discutir os diagnósticos diferenciais possíveis, correlacionando-os com as características dos exames de imagens. Paciente com 37 anos, do sexo feminino, com quadro clínico de dor na coluna e paraparesia há 2 meses. O diagnóstico inicial foi de COA. Na radiografia a lesão era lítica, com, erosão e destruição da cortical..A tomografia e ressonância evidenciavam lesão cística e hemorrágica, com extensão para partes moles. A revisão das lâminas e análise do espécime cirúrgico ressecado, submetido à coloração HE e imunoistoquímica com marcador para p53, permitiram o diagnóstico de TGC. Muitas lesões, benignas apresentam células gigantes multinucleadas. Os exames de imagem nem sempre permitem um diagnóstico conclusivo. O diagnóstico definitivo de TGC depende do exame anatomopatológico, com avaliação cuidadosa do componente estromal e a imunoexpressão positiva para a proteína p53. O tratamento é a ressecção cirúrgica, com margens amplas seguida por instrumentação nos casos de tumor localizados na coluna vertebral.Giant Cell Tumor (GCT is a benign tumor, with a recurrence rate of about 20% - 34% of the cases. It is usually located at long bone epiphysis. The objective of this study is to report a GCT case in a vertebra, which was early diagnosed as Aneurysmal Bone Cyst (ABC, and to discuss potential differential diagnosis, correlating them to patterns shown on imaging tests. This patient is a 37 year-old female, with clinical picture of pain in spine and paraparesis that started two months earlier. An early diagnosis of ACB was delivered. At X-ray, the injury was lithic, with erosion and cortical destruction

  15. ТЕХНОЛОГИЧЕСКАЯ ХАРАКТЕРИСТИКА ГИГАНТСКОГО КАЛЬМАРА ДОЗИДИКУСА ( DOSIDICUS GIGAS) И ЕГО РАЦИОНАЛЬНОЕ ИСПОЛЬЗОВАНИЕ

    OpenAIRE

    Перова, Людмила; Винокур, Михаил; Андреев, Михаил

    2012-01-01

    Приводится технологическая и биологическая характеристика гигантского (перуано-чилийского) кальмара дозидикуса ( Dosidicus gigas ), обитающего в юго-восточной части Тихого океана. Представлены размерно-массовый и химический состав мантии и отдельных частей кальмара, изменения биохимических показателей в зависимости от размера тела кальмара. Высказано предположение, что вкусоароматика крупного кальмара обусловлена содержанием хлористого аммония. В Атлантическом научно-исследовательском институ...

  16. In vitro antioxidant, antimutagenic and antiproliferative activities of collagen hydrolysates of jumbo squid (Dosidicus gigas byproducts

    Directory of Open Access Journals (Sweden)

    Guadalupe Miroslava Suárez-Jiménez

    2015-09-01

    Full Text Available AbstractHydrolysates from two different jumbo squid byproducts (fins and arms, produced by trypsin and protease type XIV were compared on the basis of their antioxidant (DPPH and ABTS radical scavenging assays, antimutagenic (Ames test and antiproliferative (Transformation cell proliferation in M12.C3F6 murine cells activities. Jumbo squid arms had higher content of collagen than fins, and their hydrolysates had the highest antioxidant activity. Also, jumbo squid arm-derived collagen hydrolyzed with protease XIV showed the highest antimutagenic activity. The four hydrolysates obtained showed low antiproliferative activity, however they are susceptible for further studies to be applied as food additives.

  17. Ecology and Trophic Interactions of Jumbo Squid (Dosidicus gigas) in the California Current Ecosystem

    OpenAIRE

    Gilly, William; Field, John

    2012-01-01

    Humboldt squid have recently demonstrated a range expansion into the waters off California from the previous northern extent of their range in Mexico. In this new environment, we expected the vertical and horizontal migratory behavior and the diet to be generally similar those previously documented in Mexico. However, we also expected significant differences in diet and reproductive activity, with potentially great impacts on ecosystems in the California Current System. In particular, consump...

  18. Chemical and Functional Characterization of Sarcoplasmic Proteins from Giant Squid (Dosidicus gigas) Mantle

    OpenAIRE

    Rosa Linda Lopez-Enriquez; Victor Manuel Ocano-Higuera; Wilfrido Torres-Arreola; Josafat Marina Ezquerra-Brauer; Enrique Marquez-Rios

    2015-01-01

    Modification of pH and NaCl concentration changed the physicochemical properties of sarcoplasmic proteins (SP) from jumbo squid mantle and consequently their functional properties. Better results of emulsifying activity index (EAI) and foam capacity (FC) were exhibited at pH 11 in NaCl absence due to higher solubility. But better emulsifying stability index (ESI) was obtained at pH 11 in 0.5 M NaCl, while, foaming stability (FS) was better at pH near to isoelectric point (pI). These results s...

  19. Chemical and Functional Characterization of Sarcoplasmic Proteins from Giant Squid (Dosidicus gigas Mantle

    Directory of Open Access Journals (Sweden)

    Rosa Linda Lopez-Enriquez

    2015-01-01

    Full Text Available Modification of pH and NaCl concentration changed the physicochemical properties of sarcoplasmic proteins (SP from jumbo squid mantle and consequently their functional properties. Better results of emulsifying activity index (EAI and foam capacity (FC were exhibited at pH 11 in NaCl absence due to higher solubility. But better emulsifying stability index (ESI was obtained at pH 11 in 0.5 M NaCl, while, foaming stability (FS was better at pH near to isoelectric point (pI. These results suggest that SP from jumbo squid may be a promising ingredient, whose functional properties can be manipulated by changing pH and NaCl concentration.

  20. Methods to obtain protein concentrates from jumbo squid (Dosidicus gigas) and evaluation of their functionality.

    Science.gov (United States)

    Galvez-Rongel, A; Ezquerra-Brauer, J M; Ocano-Higuera, V M; Ramirez-Wong, B; Torres-Arreola, W; Rouzaud-Sandez, O; Marquez-Rios, E

    2014-03-01

    Jumbo squid is an important fishery resource in Mexico, and its muscle is lean and white and it has a very low price in the market. It is abundant, but with little or nothing added value, therefore is necessary to search alternatives of processing. Due to muscle characteristics, the aim of this study was to obtain protein concentrates using different methods. They were obtained by means of acidic (acid protein concentrates) and alkaline (alkaline protein concentrates) dissolution. Moreover, a protein concentrate was obtained by direct isoelectric precipitation and by the traditional method (neutral protein concentrates). The yield with better results was alkaline protein concentrates (63.58 ± 1.8%). The gel hardness was significantly different (p < 0.05), especially for the alkaline protein concentrates. The acid protein concentrates, isoelectric precipitation and alkaline protein concentrates were better with regard to the neutral protein concentrates, concerning the emulsifying and foaming properties. The protein concentrates by means of alkaline dissolution gave a better gelling property, but all the processes had the potential to obtain protein with emulsifying and foaming properties. PMID:23733825

  1. In vitro antioxidant, antimutagenic and antiproliferative activities of collagen hydrolysates of jumbo squid (Dosidicus gigas) byproducts

    OpenAIRE

    Guadalupe Miroslava Suárez-Jiménez; Rosario Maribel Robles-Sánches; Glória Yépiz-Plascencia; Armando Burgos-Hernández; Josafat Marina Ezquerra-Brauer

    2015-01-01

    AbstractHydrolysates from two different jumbo squid byproducts (fins and arms), produced by trypsin and protease type XIV were compared on the basis of their antioxidant (DPPH and ABTS radical scavenging assays), antimutagenic (Ames test) and antiproliferative (Transformation cell proliferation in M12.C3F6 murine cells) activities. Jumbo squid arms had higher content of collagen than fins, and their hydrolysates had the highest antioxidant activity. Also, jumbo squid arm-derived collagen hydr...

  2. Sequential Isotopic Signature Along Gladius Highlights Contrasted Individual Foraging Strategies of Jumbo Squid (Dosidicus gigas)

    OpenAIRE

    Anne Lorrain; Juan Argüelles; Ana Alegre; Arnaud Bertrand; Jean-Marie Munaron; Pierre Richard; Yves Cherel

    2011-01-01

    BACKGROUND: Cephalopods play a major role in marine ecosystems, but knowledge of their feeding ecology is limited. In particular, intra- and inter-individual variations in their use of resources has not been adequatly explored, although there is growing evidence that individual organisms can vary considerably in the way they use their habitats and resources. METHODOLOGY/PRINCIPAL FINDINGS: Using δ(13)C and δ(15)N values of serially sampled gladius (an archival tissue), we examined high resolu...

  3. Gigantic unruptured sinus of Valsalva aneurysm presenting as an incidental murmur.

    LENUS (Irish Health Repository)

    Yagoub, Hatim

    2012-01-01

    We report a case of a 56-year-old man referred by his family physician with an asymptomatic cardiac murmur. Trans-thoracic echocardiography (TTE) suggested an unruptured right sinus of Valsalva aneurysm (SVA) causing extrinsic compression of the right ventricular outflow tract. This was confirmed with an ECG-gated cardiac CT showing a large right SVA measuring 35×37×42 mm in size. Coronary angiography demonstrated non-obstructive coronary artery disease. Ascending thoracic anterior in the right anterior oblique view delineated the right SVA. The patient underwent aortic valve sparing surgical repair of the aneurysm with an excellent result. Echocardiography confirmed obliteration of the aneurysm and normal aortic valve function postoperatively.

  4. Bolnav cu Gist Gastric Gigant; Supraviețuire Nesperată Prezentare de Caz

    Directory of Open Access Journals (Sweden)

    Gheorghe M

    2014-05-01

    Full Text Available Background: Gastrointestinal Stromal Tumors (GIST are rare neoplasms, with sever prognosis in advanced cases. Until the discovery of Tyrosin Kinase Inhibitors (TKI, the life expectancy was very poor for patient with metastatic tumors, postoperative relapses or unresectable disease. Introduction of TKI therapy provided an unexpected survival rate, controlling the disease with very good tolerance. Method: We present a case report representative for GIST pathology. It is the first case of our GIST series of patients, operated in General and Esophageal Surgery Clinic of “St. Mary” Hospital Bucharest. A multidisciplinary approach and a complex, multimodal, surgical and oncological treatment was applied, with good response confirmed by the long-term follow-up. A 79 years old patient was diagnosed in 2004 (at the age of 70 years with giant gastric GIST. He underwent a total gastrectomy, splenectomy and left pancreatectomy; the resection was considered as R1 because the tumor capsule was not complete. The adjuvant treatment with TKI was started postoperatively for 2 years. The recurrence was noted one year after the adjuvant therapy stop. Then the TKI treatment was restarted with very good tolerance and control of disease at 9 years. Conclusion: The TKI therapy allows long-term control of the malignant GISTs in term of overall survival and quality of life, even when the surgical procedure is not optimal.

  5. Gigantic ovarian and suprarenal cysts ten years after enucleation of unilateral retinoblastoma

    OpenAIRE

    Krstić Vera; Krstić Zoran; Smoljanić Željko; Đurović Jelena; Marković Vujica; Kosanović-Jaković Natalija

    2008-01-01

    INTRODUCTION Retinoblastoma (RB) is the most common eye tumour in children and is curable. Patients with hereditary RB have increased risk of developing additional tumours, predominantly sarcomas. The published results on the treatment of bilateral RB have shown that 10-15% of patients develop second primary tumours (SPT). Average latent period, e.g. the period from the diagnosis of bilateral RB to the appearance of SPT is 10.4 years. In the literature, the appearance of second benign tumours...

  6. Juvenilt gigant fibroadenom i brystet hos en tiårig pige

    DEFF Research Database (Denmark)

    Hasanbegovic, Emir; Talman, Maj-Lis Møller; Hjalgrim, Lisa Lyngsie;

    2014-01-01

    A rapidly growing mass in the breast may be stressful for both parents and child as the suspicion of malignancy arises. The purpose of this case report is to draw attention to the fact that most emerging lesions of the breast in girls during puberty are benign. This case report presents a ten...

  7. Futures, fakes and discourses of the gigantic and miniature in ‘The World’ islands, Dubai

    OpenAIRE

    Pamila Gupta

    2015-01-01

    This article takes the “island” as a key trope in tourism studies, exploring how ideas of culture and nature, as well as those of paradise (lost) are central to its interpretation for tourists and tourist industries alike. Increasingly, however, island tourism is blurring the line between geographies of land and water, continent and archipelago, and private and public property. The case of ‘The World’ islands mega project off the coast of Dubai (UAE) is used to chart the changing face and fut...

  8. Incidentaloma gigante de adrenal em paciente jovem Giant adrenal incidentaloma in young patient

    Directory of Open Access Journals (Sweden)

    Cristiano Feijó Andrade

    2000-10-01

    Full Text Available Incidental adrenal tumors are lesions occasionally observed during abdominal US or CT scans. These tumors have been observed in patients without clinical or laboratorial signs of adrenal disease. The authors report a case of a 18 - years - old young man who was admitted to the Franco da Rocha Hospital, São Paulo, with abdominal pain and a palpated mass in the epigastrium which began one month ago. These findings were preceeded by a blunt trauma at the epigastrium three months earlier. First clinical hypothesis was of a traumatic pancreatic pseudocyst. However, investigation and laparotomy showed a large left adrenal solid mass, weighting 700 g. The mass was removed and histology was performed. There was no evidence of malignant neoplasm, then the diagnostic of incidental adenoma of adrenal was confirmed. The authors hope to stimulate surgeons for early detection of these lesions in order to prevent the complications and improve the prognosis.

  9. A Permutation Gigantic Issues in Mobile Real Time Distributed Database : Consistency & Security

    Directory of Open Access Journals (Sweden)

    Gyanendra Kr. Gupta

    2011-02-01

    Full Text Available Several shape of Information System are broadly used in a variety of System Models. With the rapid development of computer network, Information System users concern more about data sharing in networks. In conventional relational database, data consistency was controlled by consistency control mechanism when a data object is locked in a sharing mode, other transactions can only read it, but can not update it. If the traditional consistency control method has been used yet, the system’s concurrency will be inadequately influenced. So there are many new necessities for the consistency control and security in Mobile Real Time Distributed Database (MRTDDB. The problem not limited only to type of data (e.g. mobile or real-time databases. There are many aspects of data consistency problems in MRTDDB, such as inconsistency between characteristic and type of data; the nconsistency of topological relations after objects has been modified. In this paper, many cases of consistency are discussed. As the mobile computing becomes well-liked and the database grows with information sharing security is a big issue for researchers. Mutually both Consistency and Security of data is a big confront for esearchers because whenever the data is not consistent and secure no maneuver on the data (e.g. transaction is productive. It becomes more and more crucial when the transactions are used in on-traditional environment like Mobile, Distributed, Real Time and Multimedia databases. In this paper we raise the different aspects and analyze the available solution for consistency and security of databases. Traditional Database Security has focused primarily on creating user accounts and managing user rights to database objects. But in the mobility and drifting computing uses this database creating a new prospect for research. The wide spread use of databases over the web, heterogeneous client-server architectures,application servers, and networks creates a critical need to amplify this focus.

  10. High-level organization of isochores into gigantic superstructures in the human genome

    Science.gov (United States)

    Carpena, P.; Oliver, J. L.; Hackenberg, M.; Coronado, A. V.; Barturen, G.; Bernaola-Galván, P.

    2011-03-01

    Human DNA shows a complex structure with compositional features at many scales; the isochores—long DNA segments (~105 bp) of relatively homogeneous guanine-cytosine (G + C) content—are the largest well-documented and well-analyzed compositional structures. However, we report here on the existence of a high-level compositional organization of isochores in the human genome. By using a segmentation algorithm incorporating the long-range correlations existing in human DNA, we find that every chromosome is composed of a few huge segments (~ 107 bp) of relatively homogeneous G + C content, which become the largest compositional organization of the genome. Finally, we show evidence of the biological relevance of these superstructures, pointing to a large-scale functional organization of the human genome.

  11. Liposarcoma retroperitoneal gigante. Reporte de caso (Giant retroperitoneal liposarcoma. Case report

    Directory of Open Access Journals (Sweden)

    Eduardo Reyna-Villasmil

    2015-01-01

    Full Text Available Soft tissue sarcomas represent less than 1% of all human neoplasms. One-third of malignant tumors that arise in the retroperitoneum are sarcomas and liposarcoma is the most common retroperitoneal sarcoma and is known to grow to giant sizes, slow progress and few late symptoms. We report the case of a 40 year old woman with a giant retroperitoneal liposarcoma. A laparotomy was performed and a multilobulated tumor of 20 centimeters of diameter arising from retroperitoneum. The histological features were suggestive of pleomorphic liposarcoma weighing 8.5 Kilograms

  12. Unsuspected meningioma in a patient with pituitary gigantism. Case report with autopsy findings

    Energy Technology Data Exchange (ETDEWEB)

    Stock, J.M.; Ghatak, N.R.; Oppenheimer, J.H.

    1975-06-01

    A unique example of a clinically unsuspected large parasellar meningioma is described in a 36-yr-old pituitary giant who had been treated initially with conventional irradiation, subsequently by surgical excision of an acidophil adenoma, and ultimately with medroxyprogesterone acetate (MPA) prior to his demise. The patient died of increased intracranial pressure resulting from a combined mass effect of the meningioma and recurrent tumor. The relationship between radiation and the development of the meningioma is discussed, as well as the fine ultrastructure of a highly functioning acidophil adenoma.

  13. Tumor gigante en un paciente con melanoma Giant tumor in a patient with melanoma

    OpenAIRE

    Katty Hind Selman-Housein Bernal; Giselle Tárano Quintero; Iosmill Morales Pérez; Carlos Alfonso Sabatier; Francisco Hernández Bernal

    2012-01-01

    Se estudió un paciente masculino, negro, de 17 años de edad, caribeño, aparentemente sano hasta el año 2007 cuando aparece un tumor témporo-parieto-frontal izquierdo de crecimiento rápido, que compromete la cara. Al examen físico se constató, además, piel y mucosas pálidas con desnutrición severa. El diagnóstico histopatológico fue de melanoma maligno de células epiteloides.The case of a black Caribbean patient aged 17 apparently healthy until 2007 when to appear a left temporal-parietal-fron...

  14. Unigas readies for motor fuel surge with supplies from gigantic plant

    International Nuclear Information System (INIS)

    Nestled away a short distance from the smog and congestion of Mexico City is a sprawling LP-gas plant from which 72 million gallons of propane are shipped annually. Boasting a storage capacity of 865,000 gal. in 19 tanks, this plant is believed to possess the largest total reserve capacity of any such facility south of the border and in all of Latin America. This paper reports on a tour of the Unigas plant in Ixhuatepec, hosted by general director Carlos Venegas Baeza, which provides insight into three major areas: the operations and plans of one of the largest LP-gas companies in Mexico, the booming market in carburetion, and most noteworthy, the technologically advanced safety/security system that has been installed at this point

  15. Gigantism in unique biogenic magnetite at the Paleocene-Eocene Thermal Maximum

    OpenAIRE

    Schumann, Dirk; Raub, Timothy D; Kopp, Robert E.; Guerquin-Kern, Jean-Luc; Wu, Ting-Di; Rouiller, Isabelle; Smirnov, Aleksey V.; Sears, S. Kelly; Lücken, Uwe; Tikoo, Sonia M.; Hesse, Reinhard; Kirschvink, Joseph L.; Vali, Hojatollah

    2008-01-01

    We report the discovery of exceptionally large biogenic magnetite crystals in clay-rich sediments spanning the Paleocene-Eocene Thermal Maximum (PETM) in a borehole at Ancora, New Jersey. Aside from previously-described abundant bacterial magnetofossils, electron microscopy reveals novel spearhead-like and spindle-like magnetite up to 4 μm long and hexaoctahedral prisms up to 1.4 μm long. Similar to magnetite produced by magnetotactic bacteria, these single-crystal particles exhibit chemical...

  16. Discovery of the largest orbweaving spider species: the evolution of gigantism in Nephila.

    Directory of Open Access Journals (Sweden)

    Matjaz Kuntner

    Full Text Available BACKGROUND: More than 41,000 spider species are known with about 400-500 added each year, but for some well-known groups, such as the giant golden orbweavers, Nephila, the last valid described species dates from the 19(th century. Nephila are renowned for being the largest web-spinning spiders, making the largest orb webs, and are model organisms for the study of extreme sexual size dimorphism (SSD and sexual biology. Here, we report on the discovery of a new, giant Nephila species from Africa and Madagascar, and review size evolution and SSD in Nephilidae. METHODOLOGY: We formally describe N. komaci sp. nov., the largest web spinning species known, and place the species in phylogenetic context to reconstruct the evolution of mean size (via squared change parsimony. We then test female and male mean size correlation using phylogenetically independent contrasts, and simulate nephilid body size evolution using Monte Carlo statistics. CONCLUSIONS: Nephila females increased in size almost monotonically to establish a mostly African clade of true giants. In contrast, Nephila male size is effectively decoupled and hovers around values roughly one fifth of female size. Although N. komaci females are the largest Nephila yet discovered, the males are also large and thus their SSD is not exceptional.

  17. Esplenomegalia gigante en la leucemia linfocítica crónica

    OpenAIRE

    José Luis González González; Joaquín Menéndez Núñez

    2014-01-01

    La leucemia linfocítica crónica constituye la forma de leucemia más frecuente en el mundo occidental; sus síntomas más frecuentes son la aparición de adenopatías, el cansancio, la pérdida de peso y aquellos derivados de las infecciones y del síndrome anémico. Aunque es una de las enfermedades que rara vez son tributarias de una esplenectomía por hiperesplenismo, es una entidad frecuente en hematología y debe ser del dominio y conocimiento del cirujano general. Presentamos un paciente con una ...

  18. Low-magnesium uranium-calcite with high degree of crystallinity and gigantic luminescence emission

    Energy Technology Data Exchange (ETDEWEB)

    Valle-Fuentes, Francisco-Jose [Instituto de Ceramica y Vidrio, CSIC. Cantoblanco, 28049 Madrid (Spain); Garcia-Guinea, Javier [Museo Nacional Ciencias Naturales, CSIC, 28006 Madrid (Spain)]. E-mail: guinea@mncn.csic.es; Cremades, Ana [Departmento Fisica de Materiales, Facultad de Fisicas, University Complutense de Madrid, 28040 Madrid (Spain); Correcher, Virgilio [CIEMAT, Laboratory Dosimetria de Radiaciones, 28040 Madrid (Spain); Sanchez-Moral, Sergio [Museo Nacional Ciencias Naturales, CSIC, 28006 Madrid (Spain); Gonzalez-Martin, Rafael [Museo Nacional Ciencias Naturales, CSIC, 28006 Madrid (Spain); Sanchez-Munoz, Luis [CIEMAT, Laboratory Dosimetria de Radiaciones, 28040 Madrid (Spain); Lopez-Arce, Paula [Getty Conservation Institute, 1200 Getty Center Drive, Suite 700, Los Angeles, CA 90049 (United States)

    2007-01-15

    Cabrera (Madrid) low-Mg calcites exhibit: (i) an unusual twofold elevation in X-ray diffraction pattern intensity; (ii) a 60-fold elevation of luminescence emission, compared to six common natural calcites selected for comparison purposes; (iii) a natural relatively high radiation level of circa 200 nSv h{sup -1} not detected in 1300 other calcites from the Natural History Museum of Madrid. Calcites were analysed by the X-ray diffraction powder method (XRD), cathodo-luminescence spectroscopy in scanning electron microscopy (CL-SEM), thermoluminescence (TL), differential thermal analysis (DTA), X-ray fluorescence spectrometry (XRF) and particle size distribution (PSD). The Cabrera calcite study shows: (i) helicoidally distributed steps along the (0 0 0 1) orientation; (ii) protuberance defects onto the (0 0 0 1) surface, observed by SEM; (iii) XRF chemical contents of 0.03% MgO, 0.013% of Y{sub 2}O{sub 3}, and 0.022% of U{sub 3}O{sub 8}, with accessory amounts of rare earth elements (REE); (iv) DTA dissociation temperature of 879 {sup o}C; (v) TL maxima peaks at 233 and 297 {sup o}C whose areas are 60 times compared to other calcites; (vi) spectra CL-SEM bands at 2.0 and 3.4 eV in the classic structure of Mn{sup 2+} activators; (vii) a twofold XRD pattern explained given that sample is a low-Mg calcite. The huge TL and CL emissions of the Cabrera calcite sample must be linked with the uranyl group presence. This intense XRD pattern in low-Mg calcites could bring into being analytical errors.

  19. STATOLITH MORPHOLOGY OF JUMBO FLYING SQUID DOSIDICUS GIGAS IN THE HIGH SEA WATERS OFF CHILE%智利外海茎柔鱼(Dosidicus gigas)耳石外部形态特征分析

    Institute of Scientific and Technical Information of China (English)

    陆化杰; 陈新军; 刘必林

    2010-01-01

    根据2008年1-5月智利外海茎柔鱼资源调查中随机采集的663尾样本(雌性464尾,雄性199尾1,对其耳石形态特征进行观察与测量.观测表明,茎柔鱼耳石具有长窄的吻区和宽大的翼区.对耳石10项形态参数进行主成分分析,结果显示,耳石总长(TSL)、吻侧区长(RLL)、翼区长(WL)可以作为耳石长度特征的代表,最大宽度(MW)则可代表耳石宽度特征.雌性个体TSL、RLL、WL和MW与胴长(ML)之间为线性关系(y=a+b×ML)(P<0.05),生长系数b在1.9358-2.9607间,其中MW的最小,WL的最大,耳石各区为均匀生长.雄性个体TSL、RLL、WL和MW与ML之间为幂函数关系(y=C×MLd)(P<0.05),生长系数d在0.9165-1.1877间,其中TSL生长速度慢于ML,RLL和MW基本与ML一致,WL则快于ML,耳石各区为非均匀生长.

  20. Isolation and properties of AMP deaminase from jumbo squid (Dosidicus gigas) mantle muscle from the Gulf of California, Mexico.

    Science.gov (United States)

    Marquez-Rios, E; Pacheco-Aguilar, R; Castillo-Yañez, F J; Figueroa-Soto, C G; Ezquerra-Brauer, J M; Gollas-Galvan, T

    2008-09-01

    Adenosine monophosphate (AMP) deaminase was purified from jumbo squid mantle muscle by chromatography in cellulose phosphate, Q-Fast and 5'-AMP sepharose. Specific activity of 2.5U/mg protein, 4.5% recovery and 133.68 purification fold were obtained at the end of the experiment. SDS-PAGE showed a single band with 87kDa molecular mass, native PAGE proved a band of 178kDa, whereas gel filtration detected a 180kDa protein, suggesting the homodimeric nature of this enzyme, in which subunits are not linked by covalent forces. Isoelectric focusing of this enzyme showed a pI of 5.76, which agrees with pI values of AMP deaminase from other invertebrate organisms. AMP deaminase presented a kinetic sigmoidal plot with Vmax of 1.16μM/min/mg, Km of 13mM, Kcat of 3.48μM.s(-1) and a Kcat/Km of 267 (mol/L)(-1).s(-1). The apparent relative low catalytic activity of jumbo squid muscle AMP deaminase in the absence of positive effectors is similar to that reported for homologous enzymes in other invertebrate organisms. PMID:26050167

  1. Importance of jumbo squid Dosidicus gigas (Orbigny, 1835) in the pelagic ecosystem of the central Gulf of California

    OpenAIRE

    Rosas-Luis, R. (Rigoberto); Salinas-Zavala, C.A; Kock, V; Del Monte Luna, Pablo; Morales Zárate, M.V.

    2008-01-01

    The Humboldt squid is an important predator in the pelagic ecosystem of the central Gulf of California to the commercial catch of this species has increased over the past decade, probable due to a decrease of several top predators (sharks, large pelagic fish and the marine mammals) and the optimal feeding conditions in this area. Its high abundance and important position in the pelagic food web was quantified through two trophic models of the pelagic ecosystem of the central Gulf of Californi...

  2. Hypoxia tolerance of jumbo squids (Dosidicus gigas) in the Eastern Pacific oxygen minimum zones : physiological and biochemical mechanisms

    OpenAIRE

    Trübenbach, Katja

    2013-01-01

    Marine hypoxia has become one of the major concerns of the world, as oceanic dead zones continue expanding horizontally and vertically, a phenomenon primarily caused by global warming and anthropogenic eutrophication. As consequence, drastic changes in community structures, predator-prey relationships (i.e. uncoupling) and/or habitat compression are expected followed by severe impacts on food-webs, ecosystems and fisheries. Moreover, habitat compression is aggravated by the syn...

  3. Climate warming and stability of cold hanging glaciers: Lessons from the gigantic 1895 Altels break-off

    CERN Document Server

    Faillettaz, Jerome; Funk, Martin

    2011-01-01

    The Altels hanging glacier broke off on September 11, 1895. The ice volume of this catastrophic rupture was estimated at $\\rm 4.10^6$ cubic meters and is the largest ever observed ice fall event in the Alps. The causes of this collapse are however not entirely clear. Based on previous studies, we reanalyzed this break-off event, with the help of a new numerical model, initially developed by Faillettaz and others (2010) for gravity-driven instabilities. The simulations indicate that a break-off event is only possible when the basal friction at the bedrock is reduced in a restricted area, possibly induced by the storage of infiltrated water within the glacier. Moreover, our simulations reveal a two-step behavior: (i) A first quiescent phase, without visible changes, with a duration depending on the rate of basal changes; (ii) An active phase with a rapid increase of basal motion over a few days. The general lesson obtained from the comparison between the simulations and the available evidence is that visible si...

  4. Floristic composition of the cerrado in the Pé-de-Gigante Reserve (Santa Rita do Passa Quatro, southeastern Brazil)

    OpenAIRE

    Batalha Marco Antônio; Mantovani Waldir

    2001-01-01

    We studied a 1225 ha area, composed mainly of cerrado, in Santa Rita do Passa Quatro, São Paulo State, southeastern Brazil (21°36-38'S, 47°36-39'W). In three cerrado physiognomies (campo cerrado -- a wooded savanna, cerrado sensu stricto -- a woodland, and cerradão -- a tall woodland), we collected all vascular plants in reproductive stage, and identified them to species level. We found 360 species, representing 236 genera and 69 families. The richest families were: Asteraceae, Fabaceae, Poac...

  5. Giant Ovarian Cyst. A Case Report Quiste de ovario gigante. Presentación de un caso

    Directory of Open Access Journals (Sweden)

    Yarisdey Corrales Hernández

    2012-09-01

    Full Text Available Ovarian cysts are common tumors among gynecological conditions. The case of a 46 years old woman who arrived at the Dr. Gustavo Aldereguía Lima General University Hospital in Cienfuegos, because of pain and swelling of the abdomen of a year of evolution is presented. The physical examination and ultrasound were performed and the patient was diagnosed with an ovarian dependant cystic mass. Laparotomy was performed and the left ovarian cyst was resected. In pathological and anatomical studies the diagnosis of an ovarian serous cystadenoma was confirmed.Los quistes de ovario son tumoraciones frecuentes en las afecciones ginecológicas. Se presenta el   caso de una paciente de 46 años de edad, que acudió al Hospital General Universitario Dr. Gustavo Aldereguía Lima, de Cienfuegos, refiriendo dolor y aumento de volumen del abdomen de un año de evolución. Se realizaron examenes físico y ultrasonográfico, mediante los que se le diagnosticó una masa quística dependiente de ovario. Se practicó laparotomía y se resecó un quiste de ovario izquierdo. En su estudio anatomopatológico se comprobó el diagnóstico de cistoadenoma seroso del ovario.

  6. New large aperture, hybrid photo-detector and photo multiplier tube for a gigantic water Cherenkov ring imaging detector

    Energy Technology Data Exchange (ETDEWEB)

    Hirota, Seiko, E-mail: s_hirota@scphys.kyoto-u.ac.jp [Kyoto University, Department of Physics (Japan); Nishimura, Yasuhiro [University of Tokyo, ICRR (Japan); Suda, Yusuke [University of Tokyo, Department of Physics (Japan); Okajima, Yuji [Tokyo Institute of Technology, Department of Physics (Japan); Shiozawa, Masato; Nakayama, Shoei; Tanaka, Hidekazu; Hayato, Yoshinari; Ikeda, Motoyasu; Nakahata, Masayuki [University of Tokyo, ICRR (Japan); Yokoyama, Masashi; Aihara, Hiroaki [University of Tokyo, Department of Physics (Japan); Ichikawa, Atsuko; Minamino, Akihiro; Huang, Kunxian; Nakaya, Tsuyoshi [Kyoto University, Department of Physics (Japan); Kawai, Yoshihiko; Suzuki, Masatoshi; Ohmura, Takayuki [Hamamatsu Photonics K.K. (Japan)

    2014-12-01

    We are developing a 20-in. aperture high quantum efficiency photo-multiplier tube (PMT) and a hybrid photo-detector (HPD) for Hyper-Kamiokande which is a next generation underground large water Cherenkov detector. We have measured prototypes of 20-in. PMT with a high quantum efficiency photocathode, 30% at 400 nm, and 8-in. HPDs with a normal quantum efficiency photocathode, 22% at 400 nm, in a 200-ton water tank and checked their performance. The PMTs have a 2.7 ns (sigma) timing resolution and 43% (sigma) charge resolution for single photo-electron. Compared to PMTs, HPDs show a better performance with a 1.7 ns timing resolution and 32. - Highlights: • For Hyper-Kamiokande, a large aperture hybrid photo-detector (HPD) has been developed. • The application of high quantum efficiency photo-cathode has been also studied. • The 8-in. HPDs and 20-in. HQE PMTs have been tested in a 200-ton water tank from summer in 2013. • The HPDs show better charge and timing resolution, and lower dark rate than PMTs. • The HQE PMTs have not been stabilized yet and show higher dark rate than normal PMTs.

  7. Mixoma gigante em átrio esquerdo: relato de caso Giant myxoma in the left atrium: case report

    Directory of Open Access Journals (Sweden)

    Marcos de Paula Vale

    2008-06-01

    Full Text Available Paciente de 63 anos, sexo feminino, com história de dispnéia, palpitação e precordialgia foi submetida a avaliação cardiológica. Ao exame físico mostrava-se sem anormalidades. O ecocardiograma mostrou grande massa em átrio esquerdo, sugerindo mixoma; confirmado pela tomografia e cateterismo. A paciente foi submetida a tratamento cirúrgico, com boa evolução pós-operatória. O estudo anatomopatológico confirmou o diagnóstico de mixoma. Neste artigo é apresentada revisão bibliográfica, bem como comentários enfatizando-se a dificuldade diagnóstica baseada nos sinais e sintomas, assim como o desenvolvimento de derrame pleural bilateral no pós-operatório, possivelmente relacionado ao mixoma.In this study is reported the case of a 63-year-old-woman with history of dyspnea, palpitations, and precordial pain who underwent cardiologic evaluation. The physical examination did not reveal abnormalities. The echocardiogram showed great mass in the left atrium, suggesting myxoma which was confirmed by tomography and catheterization. The patient underwent surgical treatment with a good postoperative evolution. The diagnosis of myxoma was confirmed by histopathologic study. In this study is included a bibliographic review and a comment emphasizing the diagnostic difficulty based on signs and symptoms, as well as the details about the development of bilateral pleural effusion possibly related to the myxoma.

  8. Oceanic ecosystem dynamics during gigantic volcanic episodes: the Ontong Java and Manihiki Plateaus recorded by calcareous nannoplankton. (Invited)

    Science.gov (United States)

    Erba, E.

    2010-12-01

    Earth's volcanic activity introduces environmental stress that biota are forced to survive. There is a general consensus on the role of volcanogenic carbon dioxide increases, and implicit tectonic-igneous events, triggering major climate changes and profound variations in chemical, physical and trophic characteristics of the oceans through the Phanerozoic. Cretaceous geological records indicate conditions of excess atmCO2 (up to 2000-3000 ppm) derived from construction of Large Igneous Provinces (LIPs). In such “high CO2 world” and greenhouse conditions, the deep ocean became depleted of oxygen promoting the accumulation and burial of massive amounts of organic matter; such episodes are recognized as Oceanic Anoxic Events (OAEs) and their geological records merit careful examination of how the Earth system, and Life in particular, can overcome extreme experiments of global change. The Early Aptian (˜ 120 million years ago) OAE1a is a complex example of volcanicCO2-induced environmental stress. There is a general consensus on the causes of this case-history, namely excess CO2 derived from the construction of the Ontong Java-Manihiki LIP. Multi- and inter-disciplinary studies of the OAE1a have pointed out C, O, Os, Sr isotopic anomalies, a biocalcification crisis in pelagic and neritic settings, enhanced fertility and primary productivity, as well as ocean acidification. Available cyclochronology allows high-resolution dating of biotic and environmental fluctuations, providing the precision necessary for understanding the role of volcanogenic CO2 on nannoplankton biocalcification, adaptations, evolutionary innovation and/or extinctions. The reconstructed sequence of volcanogenic CO2 pulses, and perhaps some clathrate melting, triggered a climate change to supergreenhouse conditions, anoxia and ocean acidification. The demise of heavily calcified nannoconids and reduced calcite paleofluxes marks beginning of the pre-OAE1a calcification crisis. Ephemeral coccolith dwarfism and malformation represent adjustments to survive lower pH. Deep-water acidification occurs with a delay of 25-30 thousand years: a dissolution event recording 1 to 2km shallowing of the Calcite Compensation Depth anticipated the onset of anoxic sedimentation. A major acceleration in weathering has been identified in the lowermost part of OAE1a. After acidification-dissolution climax, nannoplankton and carbonate recovery developed over ~160 kyr, under persisting global dysoxia-anoxia. This recovery presumably implies a stasis of the LIP activity and gradual buffering of ocean acidification or a decrease in volcanogenic CO2 emissions and consistently higher CO2 drawdown through Corg burial and/or weathering. Rising CO2 and surface-ocean acidification during OAE1a triggered false extinctions among calcareous nannoplankton. Conversely, a major origination episode starts approximately 1 My before global anoxia and persists through OAE1a and associated acidification. Increasing pCO2 caused complex and species-specific reactions, including production of r-strategist taxa, which, however, secreted dwarf and malformed coccoliths as a strategy to overcome acidification.

  9. Pelletization of seeds of Raphanus sativus L. cv. Redondo Gigante with graphite for germination under water stress conditions

    OpenAIRE

    2000-01-01

    The effect of water stress on germination of radish seeds is dependent on the presence of light. The effect of pelletization of radish seeds with powdered graphite on the tolerance to water stress under light was analysed. White light and far-red lights were filtered by graphite increasing slightly the tolerance of pelleted seeds to water stress of -0.77MPa. Although red light also inhibited seed germination the graphite had no effect. We propose the pelletization of seeds of Raphanus sativus...

  10. De BRIC a BRICS: como a África do Sul ingressou em um Clube de Gigantes

    Directory of Open Access Journals (Sweden)

    Elton Jony Jesus Ribeiro

    2015-06-01

    Full Text Available O grupo BRIC foi criado em 2006 para reunir os principais países emergentes do mundo. Durante a sua terceira cúpula em 2011, a África do Sul aderiu formalmente ao grupo, que então se tornou BRICS. A sua adesão ao grupo, no entanto, é intrigante, uma vez que a África do Sul é muito menor do que os outros BRICS em termos de sua economia, território e população. Por que a África do Sul foi convidada a se juntar ao grupo? Este artigo argumenta que, para responder a esta questão, é necessário considerar a dimensão simbólica do grupo. Mesmo que o grupo possa ser útil para aprofundar as relações entre os seus membros e coordenar posições em foros multilaterais, os países do BRICS têm como objetivo principal usar o BRICS como símbolo da maior relevância do "Sul Global" em comparação ao "Norte Global". A este respeito, a África do Sul se juntou ao grupo para desempenhar o papel de representante da África, reforçando assim a imagem do BRICS de representante do "Sul Global". Com um país africano, o "Sul Global" estaria "mais bem" representado no BRICS. Embora o status da África do Sul de representante da África seja controverso, este artigo argumenta que a África do Sul é o país mais adequado para desempenhar este papel. Isso se deve a dois fatores: a África do Sul possui uma economia mais madura que as de outros grandes países africanos; e possui um softpower que nenhum outro país africano possui. O artigo chega a essas conclusões analisando os interesses de cada BRIC em ser membro do grupo e analisando as suas posições sobre a admissão da África do Sul no grupo.

  11. Floristic composition of the cerrado in the Pé-de-Gigante Reserve (Santa Rita do Passa Quatro, southeastern Brazil

    Directory of Open Access Journals (Sweden)

    Batalha Marco Antônio

    2001-01-01

    Full Text Available We studied a 1225 ha area, composed mainly of cerrado, in Santa Rita do Passa Quatro, São Paulo State, southeastern Brazil (21°36-38'S, 47°36-39'W. In three cerrado physiognomies (campo cerrado -- a wooded savanna, cerrado sensu stricto -- a woodland, and cerradão -- a tall woodland, we collected all vascular plants in reproductive stage, and identified them to species level. We found 360 species, representing 236 genera and 69 families. The richest families were: Asteraceae, Fabaceae, Poaceae, and Rubiaceae. The savanna physiognomies were richer than the forest one. The ratio between herbaceous and woody species was approximately 2:1. We analysed the whole flora and its two components separately, woody and herbaceous, comparing them with other disjunct cerrado areas. We obtained similarity values (Sørensen index from 0.47 to 0.81, which showed that the 3 diversity of the cerrado was higher in the herbaceous component than in the woody one.

  12. New large aperture, hybrid photo-detector and photo multiplier tube for a gigantic water Cherenkov ring imaging detector

    International Nuclear Information System (INIS)

    We are developing a 20-in. aperture high quantum efficiency photo-multiplier tube (PMT) and a hybrid photo-detector (HPD) for Hyper-Kamiokande which is a next generation underground large water Cherenkov detector. We have measured prototypes of 20-in. PMT with a high quantum efficiency photocathode, 30% at 400 nm, and 8-in. HPDs with a normal quantum efficiency photocathode, 22% at 400 nm, in a 200-ton water tank and checked their performance. The PMTs have a 2.7 ns (sigma) timing resolution and 43% (sigma) charge resolution for single photo-electron. Compared to PMTs, HPDs show a better performance with a 1.7 ns timing resolution and 32. - Highlights: • For Hyper-Kamiokande, a large aperture hybrid photo-detector (HPD) has been developed. • The application of high quantum efficiency photo-cathode has been also studied. • The 8-in. HPDs and 20-in. HQE PMTs have been tested in a 200-ton water tank from summer in 2013. • The HPDs show better charge and timing resolution, and lower dark rate than PMTs. • The HQE PMTs have not been stabilized yet and show higher dark rate than normal PMTs

  13. Herbivory and Body Size: Allometries of Diet Quality and Gastrointestinal Physiology, and Implications for Herbivore Ecology and Dinosaur Gigantism

    OpenAIRE

    Clauss, Marcus; Steuer, Patrick; Müller, Dennis W. H.; Codron, Daryl; Hummel, Jürgen

    2013-01-01

    Digestive physiology has played a prominent role in explanations for terrestrial herbivore body size evolution and size-driven diversification and niche differ- entiation. This is based on the association of increasing body mass (BM) with diets of lower quality, and with putative mechanisms by which a higher BM could translate into a higher digestive efficiency. Such concepts, however, often do not match empirical data. Here, we review concepts and data on terrestrial herbivore BM, diet quali...

  14. Biological Characteristic of Dosidicus gigas off Chile Waters%智利外海茎柔鱼生物学特性的初步研究

    Institute of Scientific and Technical Information of China (English)

    刘必林; 陈新军; 钱卫国

    2009-01-01

    根据2007年1月和5~6月我国鱿钓船在智利外海的调查数据,对茎柔鱼生物学特性进行初步分析.结果表明:该地区茎柔鱼胴长范围287~702 mm,优势胴长为380~430 mm,占64.2%;体重范同0.63~11.3 kg,优势体重为0.5~2.0 kg,占75.6%;调查海Ⅸ渔获个体自西向东、自南往北呈现增大趋势;依据胴长组成推断调查海域可能存在3个群体.生长指数大于3,与秘鲁外海茎柔鱼相近;雌雄性比约为3:1,性腺成熟度以Ⅰ期为主,占92%;摄食等级0~2级为主,约占73%;当地时间00:00后摄食量增大,胃含物以鱿鱼和中上层小型鱼类为主.

  15. Evaluation of jumbo squid (Dosidicus gigas) byproduct hydrolysates obtained by acid-enzymatic hydrolysis and by autohydrolysis in practical diets for Pacific white shrimp (Litopenaeus vannamei)

    OpenAIRE

    Mayra Lizett González-Félix; Martin Perez-Velazquez; Josafat Marina Ezquerra-Brauer; Lorena Bringas-Alvarado; Anabel Sánchez-Sánchez; Wilfrido Torres-Arreola

    2014-01-01

    The marine bioprocessing industry offers great potential to utilize byproducts for fish meal replacement in aquafeeds. Jumbo squid is an important fishery commodity in Mexico, but only the mantle is marketed. Head, fins, guts and tentacles are discarded in spite of being protein-rich byproducts. This study evaluated the use of two jumbo squid byproduct hydrolysates obtained by acid-enzymatic hydrolysis (AEH) and by autohydrolysis (AH) as ingredients in practical diets for shrimp. The hydrolys...

  16. 秘鲁鱿鱼船上蒸煮滚桶的研究%Research on Steaming Barrel of Cooking Dosidicus gigas on Ship

    Institute of Scientific and Technical Information of China (English)

    于涛; 陈小娥; 方旭波; 童国忠; 余辉; 李绍嵩

    2014-01-01

    秘鲁鱿鱼是一种重要的优质海洋资源,其加工方式通常为远洋捕捞作业→初级加工→冷冻→运回国内二次加工的加工模式.针对现有的秘鲁鱿鱼船上蒸煮加工过程中所存在的问题,研制出鱿鱼蒸煮滚桶,实现机械化蒸煮,可以有效减轻工人的劳动强度,节省船上的占地面积,节约能源,减少鱿鱼胴体表面的破损,同时使其受热均匀,达到更好的蒸煮效果.试验结果表明,使用蒸煮滚桶对鱿鱼片进行蒸煮,其最佳蒸煮条件为:温度90℃,时间8min,滚桶转速20 r/min,且在外观组织、硬度和弹性等方面明显优于现有加工方法.

  17. Experiments on Removing Off - flavour from Jumbo Flying Squid Dosidicus gigas%秘鲁鱿鱼肉异味脱除试验

    Institute of Scientific and Technical Information of China (English)

    曹俊

    2008-01-01

    随着海洋渔业资源的衰退和海洋环境的变化,海洋渔业资源的结构也发生了很大变化,头足类(章鱼、鱿鱼等)、虾蟹类及低值鱼类已成为我国主要的经济海产品,也是我国水产品加工和出口创汇的主要品种。2003年,冻鱼片与头足类软体动物在我国出口水产品中占有重要地位,出口量和出口额分别为45万t和10亿美元,位居出口水产品之首。

  18. A preliminary analysis of trace-elemental signatures in statoliths of different spawning cohorts for Dosidicus gigas off EEZ waters of Chile

    Science.gov (United States)

    Liu, Bilin; Chen, Xinjun; Fang, Zhou; Hu, Song; Song, Qian

    2015-12-01

    We applied solution-based ICP-MS method to quantify the trace-elemental signatures in statoliths of jumbo flying squid, Dosidius gigas, which were collected from the waters off northern and central Chile during the scientific surveys carried out by Chinese squid jigging vessels in 2007 and 2008. The age and spawning date of the squid were back-calculated based on daily increments in statoliths. Eight elemental ratios (Sr/Ca, Ba/Ca, Mg/Ca, Mn/Ca, Na/Ca, Fe/Ca, Cu/Ca and Zn/Ca) were analyzed. It was found that Sr is the second most abundant element next to Ca, followed by Na, Fe, Mg, Zn, Cu, Ba and Mn. There was no significant relationship between element/Ca and sea surface temperature (SST) and sea surface salinity (SSS), although weak negative or positive tendency was found. MANOVA analysis showed that multivariate elemental signatures did not differ among the cohorts spawned in spring, autumn and winter, and no significant difference was found between the northern and central sampling locations. Classification results showed that all individuals of each spawned cohorts were correctly classified. This study demonstrates that the elemental signatures in D. gigas statoliths are potentially a useful tool to improve our understanding of its population structure and habitat environment.

  19. 利用茎柔鱼废弃物酿制鱼露的研究%Study on Fish Sauce Brewed by the Waste of Dosidicus gigass

    Institute of Scientific and Technical Information of China (English)

    曲映红; 刘志东; 陈舜胜

    2014-01-01

    以智利外海茎柔鱼废弃物为原料,采用保温、加曲保温、加酶保温等不同速酿方法制备鱼露,测定鱼露在酿制过程中的pH和氨基酸态氮,并对最终样品作感官评价.结果表明,酿制20 d内,pH和氨基酸态氮变化显著,20 d后二者均趋于稳定.常温自然酿制鱼露中的各种变化速度较速酿鱼露缓慢得多.感官评定的结果表明,保温和加曲保温速酿的样品在气味优于加酶保温速酿的样品.对保温速酿鱼露中组胺和重金属含量测定的结果表明,其中组胺及砷、镉的含量均已超标,不适于直接作为调味品食用.

  20. Evaluation of jumbo squid (Dosidicus gigas byproduct hydrolysates obtained by acid-enzymatic hydrolysis and by autohydrolysis in practical diets for Pacific white shrimp (Litopenaeus vannamei

    Directory of Open Access Journals (Sweden)

    Mayra Lizett González-Félix

    2014-09-01

    Full Text Available The marine bioprocessing industry offers great potential to utilize byproducts for fish meal replacement in aquafeeds. Jumbo squid is an important fishery commodity in Mexico, but only the mantle is marketed. Head, fins, guts and tentacles are discarded in spite of being protein-rich byproducts. This study evaluated the use of two jumbo squid byproduct hydrolysates obtained by acid-enzymatic hydrolysis (AEH and by autohydrolysis (AH as ingredients in practical diets for shrimp. The hydrolysates were included at levels of 2.5 and 5.0% of the diet dry weight in four practical diets, including a control diet without hydrolysate. Shrimp growth and survival were not significantly affected by the dietary treatments. Postharvest quality of abdominal muscle was evaluated in terms of proximate composition and sensory evaluation. Significantly higher crude protein was observed in the muscle of shrimp fed the highest hydrolysate levels, AH 5% (204.8 g kg- 1 or AEH 5% (201.3 g kg- 1. Sensory analysis of cooked muscle showed significant differences for all variables evaluated: color, odor, flavor, and firmness. It was concluded that Jumbo squid byproducts can be successfully processed by autohydrolysis or acid-enzymatic hydrolysis, and that up to 5.0% of the hydrolysates can be incorporated into shrimp diets without affecting growth or survival.

  1. Morfometría comparada de los estatolitos del calamar Loligo gahi d'Orbigny, 1835 (Cephalopoda: Loliginidae del norte de Perú e islas Falkland Compared morphometry of squid statoliths Loligo gahi d'Orbigny, 1835 (Cephalopoda: Loliginidae of northern Perú and Falkland islands

    Directory of Open Access Journals (Sweden)

    Marco A. Vega

    2001-01-01

    Full Text Available Se analizó un total de 241 estatolitos: 141 pertenecientes a Loligo gahi del norte del Perú (70 estatolitos izquierdos y 71 derechos correspondientes a 34 machos y 47 hembras, y 100 de las islas Falkland (50 estatolitos izquierdos y 50 derechos correspondientes a 35 machos y 23 hembras. En cada estatolito se midió longitud total (LT, longitud del domo (LD y longitud del rostro (LR, determinándose en cada ejemplar la longitud dorsal del manto (LM y sexo. Las medidas se transformaron como cocientes de LM, comparándose mediante análisis discriminante. No se observaron diferencias significativas entre los estatolitos izquierdo y derecho en ambos sexos y en ambas áreas, por lo que se compararon sólo los del lado derecho. Se hallaron diferencias significativas entre machos y hembras del norte de Perú así como entre ambos sexos de las islas Falkland. También se hallaron diferencias significativas para individuos del mismo sexo entre ambas zonas. Se discute la significación de las diferencias encontradas entre los estatolitos de L. gahi del Perú e islas FalklandA total of 241 statoliths were analyzed: 141 belonging to Loligo gahi from the Northern Perú (70 left statoliths and 71 right statoliths corresponding to 34 males and 47 females, and 100 from the Falkland Islands (50 left statoliths and 50 right statoliths corresponding to 35 males and 23 females. Total length (TL, dome length (DL and face length (FL were measured, determining in each specimen the mantle dorsal length (ML and sex. The measures became quotients of ML, and were compared using discriminant analysis. Significant differences between the left statolith and the rigth statolith were not observed in either sex, reason why those of the right hand side were compared. Significant differences between males and females from the North of Perú were found as well as between both sexes from those of the Falkland Islands. There were also significant differences for individuals of the same sex between both zones. The meaning of the differences found between L. gahi statoliths from Perú and Falkland Islands are being discussed

  2. Morfometría comparada de los estatolitos del calamar Loligo gahi d'Orbigny, 1835 (Cephalopoda: Loliginidae) del norte de Perú e islas Falkland Compared morphometry of squid statoliths Loligo gahi d'Orbigny, 1835 (Cephalopoda: Loliginidae) of northern Perú and Falkland islands

    OpenAIRE

    Vega, Marco A.; Francisco J. Rocha; Cecilia Osorio

    2001-01-01

    Se analizó un total de 241 estatolitos: 141 pertenecientes a Loligo gahi del norte del Perú (70 estatolitos izquierdos y 71 derechos) correspondientes a 34 machos y 47 hembras, y 100 de las islas Falkland (50 estatolitos izquierdos y 50 derechos) correspondientes a 35 machos y 23 hembras. En cada estatolito se midió longitud total (LT), longitud del domo (LD) y longitud del rostro (LR), determinándose en cada ejemplar la longitud dorsal del manto (LM) y sexo. Las medidas se transformaron como...

  3. “Classical Karst” caves: Škocjanske jame, Velika jama v Briščikih (Grotta Gigante) and Timavo springs

    Czech Academy of Sciences Publication Activity Database

    Mihevc, A.; Zupan Hajna, N.; Gabrovšek, F.; Cucchi, F.; Fabbricatore, A.; Bosák, Pavel; Pruner, Petr

    Postojna: Karst Research Institute, Research Centre of the Slovenian Academy of Sciences and Arts ,, 2015 - (Zupan Hajna, N.; Mihevc, A.; Gostinčar, P.), s. 25-49 ISBN 978-961-254-808-7 Institutional support: RVO:67985831 Keywords : caves * karst * speleology * excursion guide Subject RIV: DB - Geology ; Mineralogy http://iks.zrc-sazu.si/datoteke/IKS-23-Guide-book-2015.pdf

  4. Giant cell tumor of the metatarsal bone: case report and review of the literature; Tumor de celulas gigantes do metatarso: relato de caso e revisao da literatura

    Energy Technology Data Exchange (ETDEWEB)

    Benites Filho, Paulo R.; Escuissato, Dante L. [Hospital de Clinicas da Universidade Federal do Parana (UFPR), Curitiba, PR (Brazil). Servico de Radiologia]. E-mail: danteluiz@onda.com.br; Urban, Linei A.B.D. [DAPI - Diagnostico Avancado por Imagem, Curitiba, PR (Brazil); Gasparetto, Taisa P. Davaus [Hospital Universitario Antonio Pedro (HUAP), Niteroi, RJ (Brazil). Dept. de Radiologia; Sakamoto, Danielle; Ioshii, Sergio [Hospital de Clinicas da Universidade Federal do Parana (UFPR), Curitiba, PR (Brazil). Servico de Anatomia Patologica; Marchiori, Edson [Universidade Federal Fluminense (UFF), Niteroi, RJ (Brazil). Faculdade de Medicina. Dept. de Radiologia

    2007-07-01

    Giant cell tumor of bone is a rare neoplasm and account for 5% of all primary bone tumors. It is common in the knee and wrist, but rare in the small bones of the foot. The authors report a 32-year old male patient presented with a four-month history of right foot pain. Plain radiographs showed an expansive lytic lesion involving the first right metatarsal bone. Computed tomography scan demonstrated a radiolucent lesion with well-defined borders. Biopsy was performed and the histological diagnostic was giant cell tumor. The authors emphasize the correlation between the imaging and histological findings. (author)

  5. Sobre gnomos y gigantes: los tratados Grecorromanos y la igualdad soberana de los estados como ficción histórico-jurídica

    Directory of Open Access Journals (Sweden)

    Buis, Emiliano J.

    2011-12-01

    Full Text Available El presente trabajo inicialmente se aboca al estudio de los tratados que componen la Paz de Westfalia y su vínculo real con la construcción de la noción moderna de igualdad soberana de los Estados. A partir de este análisis crítico previo, la lección avanza sobre el estudio de las relaciones interestatales en el mundo griego y el romano, focalizándose principalmente en aquellos convenios celebrados antes de la era cristiana y en la necesidad de estos pueblos de recurrir a dichos instrumentos para fijar reglas de conducta previsibles. La hipótesis del trabajo, conforme a un vasto análisis de las situaciones propias del mundo antiguo, sugiere que aquellos Estados que se relacionaron en condiciones de desproporción de poder, siempre necesitaron acudir a un velo textual –convencional– de igualdad jurídica para disimular la real desigualdad de poder.

  6. Replacement of wheat bran with spineless cactus (Opuntia ficus indica Mill cv Gigante) and urea in the diets of Holstein x Gyr heifers.

    Science.gov (United States)

    de Figueiredo Monteiro, Carolina Corrêa; Silva de Melo, Airon Aparecido; Ferreira, Marcelo Andrade; de Souza Campos, José Mauricio; Rodrigues Souza, Julyana Sena; Dos Santos Silva, Evannielly Thuanny; de Paula Xavier de Andrade, Rafael; da Silva, Emmanuelle Cordeiro

    2014-10-01

    The aim of this study was to evaluate the replacement effect of wheat bran with spineless cactus and urea in heifers. Twenty-four heifers with an average initial weight of 185 ± 13 kg were used in this experiment. Four levels of spineless cactus corrected with urea and ammonium sulfate (9:1) were studied: 0, 33, 66, and 100 % replacement with wheat bran. Samples of feed, orts, and feces were analyzed to estimate the intake and digestibility of dry matter (DM) and nutrients. Indigestible neutral detergent fiber was used as an internal marker. The experiment was conducted in a completely randomized design. Dry matter, neutral detergent fiber, and total digestible nutrient intake demonstrated a quadratic effect (P < 0.05). Rumen degradable protein intake increased linearly (P < 0.05). The maximum DM digestibility was estimated to be 0.67 with a 43 % replacement. Crude protein and NDF digestibility increased linearly (P < 0.05). The total body weight gain and average daily gain decreased linearly with the replacement. Thus, it is practical to replace wheat bran with spineless cactus containing urea and ammonium sulfate up to 66 % in sugar cane-based diets. PMID:24839899

  7. Oh, oh, o gigante acordou! Brasil, junho de 2013: conceptualizações e metáforas das manifestações

    Directory of Open Access Journals (Sweden)

    Ariadne Domingues Almeida

    2016-04-01

    Full Text Available Apresentam-se resultados de um estudo cujo principal objetivo foi examinar o processo de conceptualização das manifestações brasileiras de 2013 e dos seus agentes sociais. Como norte teórico-metodológico, seguiram-se os pressupostos da Linguística Cognitiva, baseando-se em autores como Lakoff e Johnson (1980, Kövecses (2009, Grady (1997, entre outros. O corpus examinado foi constituído por postagens feitas no Facebook, coletadas em junho de 2013. Após a análise qualitativa dos dados, concluiu-se que as manifestações, por exemplo, podem ser conceptualizadas, por meio do mecanismo da metáfora, como guerra.

  8. Localized giant cell tumors in the spinal column radiologic presentation. Tumor de celulas gigantes localizado en la columna dorsal: presentacion radiologica poco frecuente

    Energy Technology Data Exchange (ETDEWEB)

    Fernandez Echeverria, M.A.; Parra Blanco, J.A.; Pagola Serrano, M.A.; Mellado Santos, J.M.; Bueno Lopez, J.; Gonzalez Tutor, A. (Hospital Marques Valdecilla. Santander (Spain))

    1994-01-01

    Given the uncommonness of the location of giant cell tumors (GCT) in the spinal column and the limited number of studies published, we present a case of GCT located in the spinal column, which involved both vertebral bodies and partially destroyed the adjacent rib. (Author)

  9. The electromagnetic Ram action of the plasma focus as a paradigm for the generation of cosmic rays and the gigantic jets in active galaxies

    Science.gov (United States)

    Bostick, W. H.; Nardi, V.

    1985-08-01

    Recent measurements of the energy spectrum of the plasma-focus-generated deuteron beam yield as spectrum of the form N(E)=(approx.) E to the -2.7 for 1MeV E 13 MeV. Other measurements show that the beta 1 electron beam which is generated simultaneously with the deuteron beam is interrupted into segments of spacing 25ps and duration approximately 4ps. A stuttering-electro-magnetic-ram (ser) model of the plasma focus in proposed which is similar to Raudorf's electronic ram which produces a similar spectrum for an electron beam for 1Mev E 10MeV. It is proposed that the cosmic ray spectrum and the giganic galactic jets are both generated by ser action near the centers of active galaxies.

  10. Asymptomatic giant mediastinal mass: a rare case of thymolipoma Massa mediastinal gigante assintomática: um raro caso de timolipoma

    OpenAIRE

    Omar Moté Abou Mourad; Filipe Moreira de Andrade; Pedro Abrahão; Andréa Monnerat; Luiz Felippe Judice

    2009-01-01

    Thymolipoma is a very rare benign neoplasm of the thymus. We present the case of a 42-year-old male with a massive mediastinal tumor discovered on a chest X-ray after a motorcycle accident. The patient had no complaints, and his physical examination was unremarkable. Chest CT scans revealed a lipomatous mass containing areas of soft tissue density. The patient was submitted to median sternotomy expanded to left anterolateral thoracotomy, resulting in the complete excision of the tumor. The pa...

  11. Detecção da fase impulsiva de uma explosão solar gigante até 405 GHz

    Science.gov (United States)

    Raulin, J.-P.; Makhmutov, V.; Kaufmann, P.; Pacini, A. A.; Luethi, T.; Hudson, H. S.; Gary, D. E.; Yoshimori, M.

    2003-08-01

    A explosão ocorrida no dia 25/08/2001 foi uma das mais intensas do presente ciclo solar em ondas de rádio de altas frequências. Foram medidas em ondas milimétricas e submilimétricas, aproximadamente, 105 e vários milhares de unidades de fluxo solar, respectivamente. Apresentamos um estudo deste evento em múltiplas frequências, desde microondas (1GHz), até ondas submilimétricas (405 GHz) detectadas pelo Telescópio Solar para ondas Submilimétricas (SST). Esta base de dados foi complementada utilizando-se o experimento Yohkoh, incluindo a emissão em raios-X duros e raios-g (até 100 MeV), e imagens em raios-X moles da região ativa envolvida. Enfocamos e discutimos principalmente os seguintes aspectos da fase impulsiva do evento: (i) as implicações deduzidas do espectro eletromagnético, obtido pela primeira vez até 405 GHz; (ii) a dinâmica da região ativa. Os resultados mostram que para explicar o espectro rádio observado, são necessários entre 3.5×1037 e 1.5×1039 elétrons acelerados acima de 20 keV em uma região de campo magnético entre 300 e 800 Gauss. A estimativa do fluxo de fótons que seria produzido por estes elétrons, mostra que grande parte deles não precipitou na baixa atmosfera. A evolução temporal da emissão em raios-X moles revela que a configuração magnética da região ativa foi muito dinâmica durante a fase impulsiva da explosão. Em particular, mostramos que a produção dos elétrons altamente energéticos foi iniciada junto com a aparição, na baixa coroa solar, de um novo sistema compacto de estruturas magnéticas. Este fato sugere que os locais de aceleração estão localizados na baixa atmosfera do Sol, como resultado da interação entre o novo sistema compacto e o campo magnético ambiente da região ativa.

  12. Tratado Sobre os gigantes, de Fílon de Alexandria: apresentação, tradução, notas

    OpenAIRE

    César Motta Rios

    2011-01-01

    A importância da obra de Fílon de Alexandria ainda hoje é múltipla e real inclusive para o judaísmo. Conforme observado por David Runia (RUNIA, 1990, p. 185-186), seu estudo é válido para qualquer um que se interesse por literatura judaico-­helenística, judaísmo do segundo templo, Novo Testamento, patrística e gnosticismo, cultura helenística e filosofia grega.

  13. Gigantes digitales. Quijote en 17000 tuits de Diego Buendía y Escribe tu propio Quijote de Belén Gache

    Directory of Open Access Journals (Sweden)

    Celia Corral Cañas

    2015-05-01

    Full Text Available To incorporate Don Quixote into the virtual environment offers many possibilities, from the literal adaptation into an electronic format, such as rewriting it on Twitter, to the allusion to the book in an avant-garde creation. Thus, among the various ways of tackling Don Quixote in Twitter, the project El Quijote en 17000 tuits by Diego Buendía, who makes a fragmented transcript in 17000 sections or tweets, stands out. Furthermore, Escribe tu propio Quijote by Belén Gache honors Cervantes’ novel with a simple interactive game that invites the reader to rethink the authorship issue within and outside the work. These two creations, born from the junction of the famous novel by Cervantes and the particularities of the new ecosystem, recover the quixotic nature to integrate it, from very different paths, into the digital universe.

  14. Fibrolipoma gigante de la mejilla: a propósito de un caso Giant fibrolipoma of the cheek: report of a case

    Directory of Open Access Journals (Sweden)

    M Scivetti

    2006-02-01

    Full Text Available El fibrolipoma es una neoplasia de origen mesenquimal, rara en la cavidad oral, representando el 1% de todos los tumores benignos orales. Es una variante histológica del lipoma simple, que normalmente se manifiesta a nivel de la mucosa oral, suelo de la boca, lengua y labios. La etiología suele ser traumática cuando afecta localizaciones extraorales, mientras se considera idiopática al manifestarse a nivel bucal. En este artículo se presenta un raro caso de fibrolipoma de mejilla, y se discuten los aspectos diagnósticos, histo-patológicos y de tratamiento de acuerdo a la literatura.Lipomas are common soft tissue mesenchymal neoplasms, rare in the oral cavity, representing 1% of all benign oral tumors. Fibrolipoma is a histological variant of the classic lipoma which normally affects buccal mucosa, floor of the mouth, tongue and lips. In this article is presented a rare case of fibrolipoma of the cheek and are discussed all the aspects of diagnosis, histology and surgical treatment, according to literature data.

  15. Fibrolipoma gigante de la mejilla: a propósito de un caso Giant fibrolipoma of the cheek: report of a case

    OpenAIRE

    M Scivetti; M. Di Cosola; L Lo Muzio; GP Pilolli; Maiorano, E.; Capodiferro, S.; F Vignoletti; GF Favia

    2006-01-01

    El fibrolipoma es una neoplasia de origen mesenquimal, rara en la cavidad oral, representando el 1% de todos los tumores benignos orales. Es una variante histológica del lipoma simple, que normalmente se manifiesta a nivel de la mucosa oral, suelo de la boca, lengua y labios. La etiología suele ser traumática cuando afecta localizaciones extraorales, mientras se considera idiopática al manifestarse a nivel bucal. En este artículo se presenta un raro caso de fibrolipoma de mejilla, y se discut...

  16. Morfologfa conchffera, crecimiento, reproducción y letargo de los caracoles gigantes africanos : observaciones en laboratorio sobre Archachatina marginata suturalis, Achatina achatina y Achatina fulica'

    Directory of Open Access Journals (Sweden)

    Stiévenart, C.

    1997-01-01

    Full Text Available hell Shape, Growth, Reproduction and Estivation in Giant African Landsnails : Observations in Laboratory on"Archachatina marginata suturalis, Achatina achatina and Achatina fulica". Commercial frog farms exist in several countries. It seems hopeless believing that frog leg consumption can be prohibited, and the solution is probably a very strict control of the origin of the legs sold and imported. Uncontrolled hunting-poaching of frogs should be replaced by sustainable and rational breeding of frogs for sale. A large frog farm located near Singapore is described with the infrastructure and the management of the production. The two species bred are the American and the Asian bull-frogs Rana catesbeiana and R. tigerina. It is also mentioned that appropriate slaughtering techniques exist for frogs based on same guidelines as for conventional farm animals.

  17. Analysis of the re-colonization of San Benito Archipelago by Guadalupe fur seals (Arctocephalus townsendi Análisis de la recolonización del archipiélago de San Benito por el lobo fino de Guadalupe (Arctocephalus townsendi

    Directory of Open Access Journals (Sweden)

    Manuel Esperón-Rodríguez

    2012-03-01

    -colonización y el estado actual del LFG en el ASB. También se informan los primeros nacimientos y la ocupación de la isla del Oeste del ASB. Con base en los censos de 1997 a 2007, la población creció con una tasa de incremento anual de 21,6%. Se estudió el tamaño de la población, la tendencia de crecimiento de la colonia, biología reproductiva y preferencias alimentarias. Se contaron 2,227 individuos en el ASB. Tres especies de calamar se encontraron como el principal componente de la dieta (Loligo opalescens, Onychoteuthis banksii y Dosidicus gigas. La territorialidad, los patrones de actividad y el comportamiento reproductivo, muestran una conducta similar entre los individuos de isla Guadalupe y ASB. Se calculó la tasa de crecimiento promedio de las crías del ASB y se comparó con la tasa de crecimiento de las crías de isla Guadalupe (ASB: 6.7 ± 1.4 kg y 68,9 ± 2.64 cm; isla Guadalupe 5.9 ± 0.5 kg, y 67.29 ± 4.3 cm. Se midió la duración de los viajes de alimentación de las hembras, indicando que la colonia de San Benito probablemente se encuentra cerca de una importante zona de alimentación. En cuanto a los patrones de asistencia materna, estos podrían indicar una estrategia de lactancia-viajes de alimentación diferente entre SBA e isla Guadalupe. Se puede esperar que la población de lobos finos en San Benito siga creciendo, ya que no hay limitantes en cuanto al espacio reproductivo y los recursos alimenticios disponibles en la zona.

  18. Floristic composition of the cerrado in the Pé-de-Gigante Reserve (Santa Rita do Passa Quatro, southeastern Brazil) Composição florística do cerrado na Reserva Pé-de-Gigante (Santa Rita do Passa Quatro, SP)

    OpenAIRE

    Marco Antônio Batalha; Waldir Mantovani

    2001-01-01

    We studied a 1225 ha area, composed mainly of cerrado, in Santa Rita do Passa Quatro, São Paulo State, southeastern Brazil (21°36-38'S, 47°36-39'W). In three cerrado physiognomies (campo cerrado -- a wooded savanna, cerrado sensu stricto -- a woodland, and cerradão -- a tall woodland), we collected all vascular plants in reproductive stage, and identified them to species level. We found 360 species, representing 236 genera and 69 families. The richest families were: Asteraceae, Fabaceae, Poac...

  19. A study on feeding ecology and migration patterns of Dosidicus gigas off Peru using stable isotope analysis%秘鲁外海茎柔鱼摄食洄游的稳定同位素研究

    Institute of Scientific and Technical Information of China (English)

    贡艺; 陈新军; 李云凯; 韩梦洁

    2015-01-01

    茎柔鱼是具有高度洄游性的中上层头足类,是生态系统中的关键物种,也是我国远洋渔业重要捕捞对象之一.了解掌握茎柔鱼摄食及洄游信息有助于对其资源进行更合理利用.头足类内壳是一良好的信息载体,其生长发育具有不可逆性且生长贯穿整个生活史过程,包含了头足类生活史过程中的全部信息.本研究通过对秘鲁外海茎柔鱼耳石日龄进行鉴定,建立其内壳叶轴生长方程,根据该生长方程对内壳叶轴进行连续切割,测定其碳、氮稳定同位素比值,并初步分析了其在生长发育过程中的食性转换和洄游习性.结果表明:茎柔鱼个体在出生180 d后开始洄游活动,且营养层次存在下降趋势.证明了内壳连续取样分析茎柔鱼个体摄食习性和栖息地变化的可行性.

  20. 茎柔鱼耳石和角质颚微结构及轮纹判读%Microstructure of statolith and beak for Dosidicus gigas and its determination of growth increments

    Institute of Scientific and Technical Information of China (English)

    胡贯宇; 陈新军; 刘必林; 方舟

    2015-01-01

    为了研究耳石和角质颚微结构在茎柔鱼年龄鉴定中的应用,实验根据2013年7-10月中国鱿钓船在秘鲁外海(79°57′~83°24′W、10°54′~15°09′S)采集的茎柔鱼样本,提取出39尾茎柔鱼的耳石、上角质颚和下角质颚,对其微结构进行分析,并对微结构的生长纹进行计数及其差异性比较.结果显示,角质颚微结构头盖背侧区域的生长纹较为完整,通过观察头盖背侧边缘的生长纹可以消除喙部被腐蚀所产生的影响;下角质颚与上角质颚的微结构十分相似,均具有喙部纵向生长纹和喙部截面纵轴,然而,在形态和色素沉着等方面又有所不同.分析认为,耳石轮纹数与上颚轮纹数、耳石轮纹数与下颚轮纹数以及上颚轮纹数与下颚轮纹数均呈线性相关关系,并且直线的斜率与1差异性不显著(P>0.01),相关系数均接近1.研究表明,上、下角质颚微结构均能较好地估算茎柔鱼的日龄,角质颚可被用于头足类年龄与生长的研究.

  1. 鱿鱼皮胶原蛋白的提取条件优化及其特性分析%Optimization of Extraction Conditions of Collagen and Its Characterization from Skin of Jumbo flying squid (Dosidicus gigas)

    Institute of Scientific and Technical Information of China (English)

    茅宇虹; 刘俊豪; 杨文鸽; 徐大伦; 张进杰

    2014-01-01

    本研究旨在优化秘鲁鱿鱼皮胶原蛋白的提取方法,并表征其主要特性,为鱿鱼皮的高值化利用、胶原蛋白的制备提供基础.采用醋酸结合胃蛋白酶法提取秘鲁鱿鱼皮中胶原蛋白,通过单因素及响应面分析法优化提取条件,结果表明:胃蛋白酶添加量2% (w/w)、提取时间53 h、醋酸浓度0.70 mol·L-1、固液比1∶240(w/v),胶原蛋白提取率可达51.47%,并通过盐析及超滤对胶原蛋白进行纯化.SDS-PAGE结果显示鱿鱼皮胶原蛋白主要由α1,α2及β链组成,为Ⅰ型胶原蛋白;氨基酸组成分析表明其甘氨酸含量最高(281残基/1000残基),亚氨酸含量为167残基/1000残基.

  2. 冻融循环对秘鲁鱿鱼蛋白及肌肉品质的影响%Effect of Freeze-thaw Cycles on Proteins and Muscle Quality of Dosidicus gigas

    Institute of Scientific and Technical Information of China (English)

    姜晴晴; 李珊; 刘文娟; 鲁珺; 陈士国; 叶兴乾; 胡亚芹

    2014-01-01

    研究反复冻融对秘鲁鱿鱼肌原纤维蛋白及肌肉品质的影响,为水产品保鲜提供理论依据.将鱿鱼肌肉分别进行0、1、3、5、7次冻融处理,测定蛋白羰基、总巯基、表面疏水性、蛋白的聚集情况及蛋白浊度、乳化活性、乳化稳定性等,并结合感官评价对肌肉品质如解冻损失、蒸煮损失、色泽、嫩度、质构特性及肌肉脂肪氧化程度等进行分析.结果发现经过冻融处理后,蛋白羰基含量和表面疏水性增加,总巯基含量下降,蛋白出现一定程度的聚集,肌原纤维蛋白的浊度增加,乳化活性和乳化稳定性降低.随着冻融次数的增加,鱿鱼肌肉脂肪氧化程度、解冻损失、蒸煮损失、b*等显著增加(p<0.05),而L*、a*、W、嫩度、弹性和硬度等下降,同时感官评价结果和仪器分析结果保持一致.因此,反复冻融促进蛋白和脂肪发生氧化,导致鱿鱼肌肉品质下降.

  3. Study on Control of the Formaldehyde-producing in the Process Techniques of Dosidicus Gigas Dried Squid Thread%秘鲁鱿鱼丝加工过程甲醛产生控制的研究

    Institute of Scientific and Technical Information of China (English)

    励建荣; 朱军莉

    2006-01-01

    通过对秘鲁鱿鱼丝加工工艺中甲醛含量变化的测定,确定了甲醛升高最快的蒸煮和焙烤工序为关键控制点.对解冻及工序进行了条件的优化实验,最终确定为流水解冻,蒸煮条件为90℃、4min,焙烤条件为125℃、5 min.改进后的工艺能有效地控制鱿鱼丝甲醛含量,使其成品的甲醛湿基含量为8.7 mg/kg,达到了国家标准.

  4. 智利外海茎柔鱼渔场集鱼灯灯光的配置%Study on the effective utilization of fish-attracting light power in the fishing ground of Dosidicus gigas off Chile

    Institute of Scientific and Technical Information of China (English)

    王飞; 钱卫国

    2008-01-01

    智利外海茎柔鱼是我国鱿钓船的主要捕捞对象之一,集鱼灯灯光配置是高效捕捞技术的重要内容.本文根据智利外海茎柔鱼作业渔场的实测灯光强度,推算其灯光衰减系数.同时,在理论上建立灯光水中照度计算模式,并以"新世纪52号"鱿钓渔船为例进行灯光配置的分析与探讨.研究结果认为,智利外海金属卤化物灯的水中衰减系数为0.2.分析表明,随着鱿钓船集鱼灯灯高的增加,照度0.1~10 lx之间的诱集水体体积(下称为"有效体积")不断增加,但增加幅度呈递减趋势,目前该船的灯高(6.5 m)较为合适;集鱼灯间距在0.55 m时所对应的有效体积最大,建议该船的灯距可从0.5 m增大到0.55 m;随着集鱼灯总功率的增加,有效体积不断增加,并在300 kW附近达到最大值,而后随着总功率的增加而减少,建议该船集鱼灯总功率可从360 kW降到300 kW.研究表明,不同作业海域和不同钓捕对象对鱿钓船集鱼灯有着不同的要求和配置,集鱼灯总功率并不是越大越好.

  5. 秘鲁鱿鱼丝在加工过程中挥发性风味物质的变化规律%Volatile flavor compounds changing in dried-seasoned squid(Dosidicus gigas)during the processing

    Institute of Scientific and Technical Information of China (English)

    杨立平; 仪淑敏; 李学鹏; 徐永霞; 李颖畅; 励建荣

    2015-01-01

    为研究秘鲁鱿鱼丝在加工过程中挥发性风味物质的变化规律,本文采用电子鼻和顶空固相微萃取-气质联用技术(HS-SPME-GC-MS)分析了鱿鱼丝在加工工艺中5个关键控制点(原料、蒸煮4min、40℃烘干、-18℃平衡水分7d、125℃焙烤后压延拉丝)的挥发性风味物质变化.研究表明不同关键控制点样品的电子鼻信号表现出很强的聚类特性,主成分分析(PCA)和载荷分析(LA)测试样品的识别贡献率均达99.8%以上;HS-SPME-GC-MS结果分析出119种物质,各个关键控制点的产品中挥发性风味物质分别是23、31、45、61、35种,并对其中主要的挥发性风味物质的相对含量、相对气味活度值(ROAV)、气味特征及来源进行了计算和分析,表明秘鲁鱿鱼在不同加工过程中挥发性风味物质变化较大,共16种挥发性风味物质对鱼肉气味有显著性贡献,且不同关键控制点的气味物质也不完全相同.

  6. Study on the mechanism of dampening in the process of dried-seasoned Dosidicus gigas%秘鲁鱿鱼丝加工中回潮工艺的作用机理研究

    Institute of Scientific and Technical Information of China (English)

    辛学倩; 薛长湖; 薛勇; 李丰; 李兆杰; 王玉明

    2010-01-01

    回潮过程是鱿鱼丝加工中的重要工序,即将经过水煮、一次调味、渗透、干燥的鱿鱼板放入-10~-5℃的冷库冻藏,但此工序在秘鲁鱿鱼丝加工中的作用机理并不清楚,工艺参数无理论依据.本研究以盐溶性蛋白质含量、扫描电镜观察、光学显微镜观察,氧化三甲胺的变化为指标,研究了秘鲁鱿鱼丝加工半成品在-10℃回潮过程中的变化机理,结果表明,在回潮0~6d过程中,蛋白质变性明显,肌原纤维蛋白质空间结构发生改变,形成了稳定的网络结构;氧化三甲胺主要降解产生三甲胺(TMA),只产生少量的二甲胺(DMA)和甲醛(FA).回潮最佳的时间确定为3~6d,从而为秘鲁鱿鱼丝生产提供理论依据.

  7. 基于混料实验设计优化鱿鱼甲醛复合抑制剂%Optimization of compound inhibitors of formaldehyde in the jumbo squid ( Dosidicus gigas) based on mixture design

    Institute of Scientific and Technical Information of China (English)

    苗林林; 朱军莉; 励建荣

    2012-01-01

    为了研发水产品内源性甲醛的控制新技术,本文利用SAS软件的单纯型格子混料设计进行秘鲁鱿鱼甲醛复合抑制剂的优化。确定了茶多酚、氯化钙和氯化镁三种甲醛抑制剂的最佳配比为0.026%、0.642mmol/L、0.332mmol/L。通过模型的建立得到响应值与三种物质配比之间的回归方程,其中茶多酚对鱿鱼甲醛的减少率影响最大,而氯化钙对二甲胺的减少率影响最大。方差分析和验证结果表明,该模型能够准确可靠的预测响应值,并且甲醛抑制剂在高温及pH6.0时能有效降低鱿鱼中甲醛和二甲胺含量。因此,该复合抑制剂可用于鱿鱼制品高温加工过程中内源性甲醛生成的控制。%In order to research a new technique of formaldehyde control in the aquatic products, mixture design of SAS software was applied to optimizing compound inhibitors of formaldehyde in the jumbo squid.The best mixture radio of tea polyphenol, calcium chloride and magnesium chlorid was 0.026%, 0.642mmol/L, 0.332mmol/L, respectively.The model established to predict the equation between responses and three substances mixture radio was obtained by regression analysis.Tea polyphenol had the greatest effect on the reducing rate of formaldehyde, while calcium chloride had the greatest effect on the reducing rate of dimethylamine in squid.The data of analysis of variance and demonstration test indicated that the established models and regressive equation were significance,and could predict the responses value accurately and reliably.The inhibitors reduced effectively the content of formaldehyde and dimethylamine treated at high temperature and pH 6.0. Therefore, the compound inhibitors could be applied to control formaldehyde formation during the squid products thermal processing.

  8. Determination of organic acids in mantle muscle of Dosidicus gigas by HPLC%高效液相色谱法测定秘鲁鱿鱼肌肉中的有机酸

    Institute of Scientific and Technical Information of China (English)

    刘书来; 郭元帅; 许凯希; 顾赛麒; 丁玉庭

    2015-01-01

    研究建立了高效液相色谱(HPLC)同时测定秘鲁鱿鱼肌肉中多种有机酸的方法.有机酸的分离采用Atlantis T3色谱柱(4.6 mm× 150 mm,5μm),流动相为0.08 mol/L KH2PO4(pH 3.00),流速0.5 mL/min,柱温30℃,检测波长210 nm.丙酮酸、苹果酸、α-酮戊二酸、乳酸、乙酸、柠檬酸、富马酸、丁二酸、丙酸等9种有机酸均能够得到很好的分离,其相关系数均在0.999以上,相对标准偏差为0.03% ~0.37%,有机酸的回收率为94.5%~105%.

  9. Analysis on intensity of illumination distribution of gathering-fish lamp and its fishing efficiency in the squid jigging of Dosidicus gigas%集鱼灯灯光分布及茎柔鱼钓捕效果分析

    Institute of Scientific and Technical Information of China (English)

    钱卫国; 陈新军; 郑波

    2007-01-01

    根据2006年4-6月我国鱿钓船在智利外海茎柔鱼渔场实际测定的灯光分布和生产统计资料,对金属卤化物灯和高压钠灯的光照度分布及其钓捕效果进行了比较分析.经测定分析和模型拟合,金属卤化物灯和高压钠灯的灯光衰减曲线符合指数模型,金属卤化物灯和高压钠灯的衰减系数分别为0.199 8和0.635 3.在180盏×2 kW金属卤化物灯情况下,在距船舷2 m的垂直断面,其水深5m内的光照度多在100 lx以上,10 lx的等光照度曲线在18 m水层左右,0.01 lx的等光照度曲线在40 m水层附近.在30盏×500 W高压钠灯情况下,在距船舷2 m的垂直断面,其海面的平均光照度为10 lx左右,0.01 lx的等光照度曲线在20 m水层附近.以一些头足类的适宜光照度0.01~10 lx估算,30盏×500 W高压钠灯适宜照度的水体体积仅为180盏×2 kW金属卤化物灯的1/8左右.研究还表明,钓捕茎柔鱼时的金属卤化物灯适宜总功率为260~274 kW.

  10. Optimization of Dosidicus gigas Skin Gelatin-chitosan Edible Films by Response Surface Analysis%响应面法优化秘鲁鱿鱼皮明胶-壳聚糖可食膜的制备工艺

    Institute of Scientific and Technical Information of China (English)

    刘俊豪; 杨文鸽; 黄珊

    2014-01-01

    本文以鱿鱼皮明胶、壳聚糖、甘油为原料制备可食膜.在单因素试验的基础上,选取鱿鱼皮明胶添加量、甘油添加量、干燥温度作为自变量,以可食性膜的抗拉伸强度为响应值,利用响应面分析法优化制膜工艺.结果表明:可食膜的抗拉伸强度Y对鱿鱼皮明胶添加量A,甘油添加量B,干燥温度C的二次多项回归方程为:Y=29.59+1.86A-7.35B-0.70C-1.02AB+0.39AC-0.39BC-3.40A2-1.32B2-4.34C2,其中甘油添加量对可食膜抗拉伸强度影响最大,干燥温度影响最小.当鱿鱼皮明胶添加量3.42%,甘油添加量0.10%,干燥温度59.8℃时,制备得到的明胶-壳聚糖可食膜抗拉伸强度达最大值36.22MPa,验证结果为37.07MPa,二者相对误差为2.35%,说明响应面优化可食膜制备工艺结果可靠.试验优化得到的可食膜制备工艺可以为水产动物明胶制备可食的包装材料提供一定的理论依据.

  11. Preliminary study of catch composition and fishing technology of Dosidicus gigas in the high seas off Chile%智利外海茎柔鱼渔获率及钓捕技术的初步研究

    Institute of Scientific and Technical Information of China (English)

    钱卫国; 陈新军; 郑波

    2007-01-01

    根据2006年4-6月我国鱿钓船对东南太平洋智利外海茎柔鱼资源探捕,对捕捞产量及其钓捕技术进行了分析.探捕期间,其产量以手钓为主,约占总产量的98%.试验表明,八角型手钓钩的脱钩率为6.5%~19.5%,平均为13.2%.船体后部和前部的手钓脱钩率较高,中部较低.机钓脱钩率为20.7%~46.2%,平均为32.9%.茎柔鱼对机钓钩的颜色具有选择性,其中荧白色机钓钩的钓获率为最高,其次为绿色,橙色为最低.集鱼灯为金属卤化物灯时(2kW×180盏),八角型手钓钩的钓捕产量比四角型手钓钩高0.5倍;凌晨02:00-03:30时采用高压钠灯时(30盏×500W),四角型手钓钩反过来比八角型手钓钩高0.35倍.

  12. 哥斯达黎加外海茎柔鱼耳石形态学分析%Morphological analysis of statolith for jumbo flying squid (Dosidicus gigas)in the waters off Costa Rica

    Institute of Scientific and Technical Information of China (English)

    贾涛; 陈新军; 李纲; 陆化杰; 刘必林; 马金

    2010-01-01

    茎柔鱼是大洋性重要经济头足类,其耳石包含着重要的生态信息.根据2009年7-8月哥斯达黎加外海采集的茎柔鱼耳石样本,分析其耳石外部形态,探讨耳石形态差异及生长模式.研究认为,茎柔鱼左右耳石及其分区间的形态差异均不显著(P>0.05).主成分分析认为,耳石总长(TSL)、吻侧区间长(RDL)、吻侧区夹角(RDA)可表征左耳石形态特征,TSL、吻区基线长(RBL)、RDA可表征右耳石形态特征.在整个生长过程中耳石各部分均异速生长,其形态变化趋势为整体狭长、吻区长窄、背区宽大,符合中上层头足类耳石特征.耳石生长表现为两个阶段,TSL为1 600μm前后其耳石形态出现显著差异.RDL/TSL由上升变为下降(P<0.05),RBL生长速度迅速上升(P<0.01),RDA由下降变为上升(P<0.05),TSL=1 600 μm可作为栖息水层变化的重要标志.

  13. 利用栖息地指数模型预测秘鲁外海茎柔鱼热点区%Forecasting hotspots of Dosidicus gigas in the offshore waters of Peru using habitat suitability model

    Institute of Scientific and Technical Information of China (English)

    金岳; 陈新军

    2014-01-01

    利用栖息地指数模型准确地预测了秘鲁外海茎柔鱼的热点区.根据2008-2010年1-12月期间我国鱿钓渔船在秘鲁外海的生产数据,结合实时的海表温及海表面高度数据,分别建立以作业次数、单位捕捞努力量渔获量为基础的适应性指数.利用算术平均数模型建立基于海表温和海表面高度的栖息地指数模型,并利用2011年生产及环境数据对栖息地指数模型进行验证.结果显示,以作业次数为基础的适应性指数符合正态分布,而以单位捕捞努力量渔获量为基础的适应性指数显著性检验不显著,因此,只建立以作业次数为基础的模型.结果表明,以作业次数为基础的栖息地指数模型都高估了茎柔鱼热点区的范围,但大体范围基本一致,这说明其能较好地预测茎柔鱼的热点区.

  14. 秘鲁鱿鱼皮酸溶性胶原蛋白的分离及特征分析%Isolation and characterization of acid soluble collagen from the skin of Peru squid (Dosidicus Gigas)

    Institute of Scientific and Technical Information of China (English)

    邓晓龙; 高德友; 俞微微; 卢航; 武龙; 王林; 胡建恩

    2015-01-01

    以秘鲁鱿鱼皮真皮为原料提取酸溶性胶原蛋白(ASC)并对其性质进行研究.结果表明,秘鲁鱿鱼皮真皮ASC的羟脯氨酸含量为8.03%;SDS-PAGE分析表明其为Ⅰ型胶原蛋白,至少含有2类亚基(α1和α2);紫外(UV)扫描光谱最大吸收波长为228 nm;红外(FTIR)光谱分析表明分子中存在三螺旋结构;热变性温度为32.0℃,比其他水产鱼类皮肤ASC高;相对溶解度pH2.0时最大,pH6.0时最小,分别为100%和8.57%;盐浓度达到2.0%以上时,相对溶解度迅速下降至4.23%.秘鲁鱿鱼皮可以作为一种提取酸溶性胶原蛋白的原料.

  15. 东太平洋赤道公海茎柔鱼生物学特性%Study on the Biological Characteristics of Jumbo Flying Squid Dosidicus gigas in the High Seas Nearby the Equator of Eastern Pacific

    Institute of Scientific and Technical Information of China (English)

    陆化杰; 王从军; 陈新军

    2014-01-01

    根据2013年4~6月在赤道公海探捕期间采集茎柔鱼样本,研究赤道公海茎柔鱼渔业生物学特性.结果表明,不同性别、不同月份,茎柔鱼胴长和体质量组成不同.雌、雄性样本的胴长范围分别为93~495 mm和94~406 mm,优势胴长组分别为260 ~ 340 mm和240~320 mm,分别占样本总数72.53%和70.26%;雌、雄性样本体质量范围分别为25~3 900 g和33~ 2170 g,优势体质量组分别为400~1 200 g和200~1 000 g,分别占样本总数82.71%和87.82%.雌、雄性茎柔鱼净体质量比例分别介于31.69%~ 80.51%和37.05%~81.35%之间,平均值分别为60.45%和62.73%.协方差分析表明,茎柔鱼胴长与体质量、胴长与净体质量的生长均存在性别间差异,胴长与体质量的生长都最适合用幂函数表示,而胴长与净体质量的生长,雌、雄性样本分别最适合用幂函数和指数函数表示.不同月份茎柔鱼性别比例构成不同,4月、5月和6月性别比例分别为1.87∶1、1.61∶1和1.17∶1,全部样本的性别比例为1.61∶1.不同月份茎柔鱼性腺成熟度的组成不同.不同性别、不同月份间茎柔鱼胃含物等级组成存在差异.

  16. Forecasting fishing ground of Dosidicus gigas based on habitat suitability index off Peru%利用栖息地适宜指数分析秘鲁外海茎柔鱼渔场分布

    Institute of Scientific and Technical Information of China (English)

    胡振明; 陈新军; 周应祺; 钱卫国; 刘必林

    2010-01-01

    根据2003-2007年秘鲁外海茎柔鱼渔获数据以及海洋环境数据[表温(SST),表温水平梯度、表层盐度(SSS)、海面高度(SSH)、叶绿素(Chl-a)浓度],利用主成分分析法确定各环境因子的权重,分别采用权重求和法和几何平均法进行栖息地适宜指数(HSI)建模分析,选择最优模型进行实证分析,结果表明,权重最高的环境因子为SST,最小的为Chl-a浓度.HSI值较高的海区一般位于200海里专属经济区外附近海域.经统计比较,用权重求和法计算所得HSI值好于几何平均法.利用2008年茎柔鱼生产数据进行实证分析,产量和作业次数随HSI值升高而增加,权重求和法的HSI模型可用于茎柔鱼渔场的实时动态预报.分析还显示,HSI分布情况与研究海域的的海洋环境密切相关,HSI不小于0.8的海区一般处在水团交汇处.

  17. Changes in formaldehyde and quality indices of dried Dosidicus Gigas thread during storage%秘鲁鱿鱼丝贮藏过程中甲醛及相关品质指标的变化

    Institute of Scientific and Technical Information of China (English)

    邹朝阳; 李学鹏; 蒋圆圆; 励建荣; 朱军莉; 李薇霞

    2015-01-01

    以两种不同品牌的秘鲁鱿鱼丝为研究对象,以酸价、过氧化值、pH、水分活度值、菌落总数、色差值(L*、a*、b*)、二甲胺及甲醛含量为指标,探究秘鲁鱿鱼丝在贮藏过程中的品质变化规律,为探索鱿鱼丝贮藏过程中甲醛产生的机制提供理论依据.结果显示:秘鲁鱿鱼丝在贮藏两个月内的甲醛含量、二甲胺含量、菌落总数、酸价、过氧化值以及色差a*值、b*值都随贮藏时间的延长而增大,而pH、水分活度值和L*值则呈降低趋势.贮藏期间A品牌鱿鱼丝的水分活度、酸价、过氧化值以及L*值和b*值均高于B品牌,其余品质指标含量则相反.两种品牌的秘鲁鱿鱼丝甲醛含量以及B品牌的菌落总数,在贮藏两个月后均超过了最大限量标准.秘鲁鱿鱼丝的甲醛含量与菌落总数、酸价值及过氧化值间有良好的线性相关关系(p<0.01),表明鱿鱼丝贮藏过程中甲醛的产生可能是与细菌生长繁殖和脂肪氧化有关.

  18. 秘鲁外海茎柔鱼胴长组成及性成熟初步研究%Study of mantle length composition and sex maturity of jumbo flying squid (Dosidicus gigas) in fishing ground off Peru

    Institute of Scientific and Technical Information of China (English)

    叶旭昌; 陈新军

    2007-01-01

    根据2001年6-8月我国鱿钓船对秘鲁外海(79°~90° W、5°~16° S)茎柔鱼资源的调查,对其胴长组成和性成熟作了初步分析.结果表明,渔获物胴长范围为200~880 mm,优势胴长为240~480 mm,约占总数的80%左右.依据胴长组成和性成熟度,调查海域茎柔鱼存在3个群体.雌雄性别比为2.52∶1.00.渔获物中,雄性个体的性成熟度高于雌性,雄性Ⅲ和Ⅳ期占总数84.3%,雌性仅占47.5%.同一性成熟阶段,雌性个体的胴长范围均大于雄性.经估算,雌性和雄性个体的初次性成熟胴长分别为374 mm、228 mm.

  19. 秘鲁鱿鱼皮明胶抗氧化肽的制备及其分子质量分布%Preparation and Molecular Weight Distribution of Gelatin Antioxidant Peptides from Jumbo Flying Squid (Dosidicus Gigas) Skin

    Institute of Scientific and Technical Information of China (English)

    茅宇虹; 杨文鸽; 徐大伦; 谢果凰; 张进杰

    2014-01-01

    目的:基于鱿鱼皮明胶肽的抗氧化活性,优化制备工艺,探究其分子质量分布.方法:分别使用4种蛋白酶水解鱿鱼皮明胶.通过测定体外抗氧化活性来确定最适水解用酶.以DPPH自由基清除率为指标,利用单因素及响应面法优化明胶抗氧化肽的制备工艺,通过Tricine-SDS-PAGE及Sephadex G-25凝胶过滤层析测定明胶肽的分子质量分布.结果:碱性蛋白酶为最适水解用酶,最适水解温度55℃,酶添加量7 000 u/g(E/S),时间109 min,底物明胶质量分数6%,pH 6.66.此条件下明胶肽的DPPH自由基清除率达93.18%.90%明胶肽的分子质量介于1.4~10 ku之间.

  20. 漂洗工艺对秘鲁鱿鱼鱼糜凝胶特性的影响%Effect of Washing Operation on the Gel Strength of Dosidicus gigas Surimi

    Institute of Scientific and Technical Information of China (English)

    陆海霞; 傅玉颖; 李学鹏; 励建荣

    2010-01-01

    以秘鲁鱿鱼鱼糜为原料,从漂洗液成分、漂洗液酸碱度、漂洗水温、漂洗次数等方面考察漂洗工艺对秘鲁鱿鱼鱼糜凝胶特性的影响.结果表明,随着漂洗液中钙离子浓度的增加,秘鲁鱿鱼鱼糜的凝胶强度呈先升后降的趋势,漂洗液中氯化钙浓度为4.5 mmol/L,乳酸钙浓度为2.25mmol/L时,秘鲁鱿鱼鱼麋的凝胶强度达到最大值,并且含乳酸钙的漂洗液漂洗效果优于含氯化钙的漂洗液;随着漂洗液中柠檬酸钠浓度的增加,秘鲁鱿鱼鱼糜的凝胶强度也呈现先升后降的趋势,柠檬酸钠浓度0.2%时凝胶强度达到最大值.当漂洗液pH接近中性,漂洗液温度为16℃,漂洗次数为3次时,秘鲁鱿鱼鱼糜凝胶的凝胶效果较好.正交试验发现采用1次清水2次柠檬酸钠1次氯化钙漂洗鱼糜凝胶强度达最大值.

  1. 智利外海茎柔鱼繁殖生物学初步研究%Preliminary study on reproductive biology of Dosidicus gigas in the high seas off Chile

    Institute of Scientific and Technical Information of China (English)

    刘必林; 陈新军; 钱卫国; 陆化杰; 李思亮

    2010-01-01

    对2007年-2009年我国鱿钓船在东南太平洋智利外海生产期间所采集的1 374个茎柔鱼样品性成熟度进行观察,初步研究了其繁殖生物学特性.结果表明:智利外海茎柔鱼为大型群体,常年产卵,无明显的产卵高峰期.渔获物雌雄比例约为2.65: 1.雌、雄个体性腺成熟度差异不明显,其中成熟个体所占比例小,分别占总量的3.9%和6.7%.缠卵腺长和缠卵腺重随着性腺成熟度增加逐步增大,成熟个体性腺指数明显大于未成熟个体.雌、雄个体性腺指数存在差异,雌性个体Ⅳ期性腺指数与胴长成正比,而雄性则成反比.雌性和雄性茎柔鱼的初次性成熟胴长(ML_(50%))分别为638.3 mm和565.3 mm.

  2. Stable isotope of beak for Dosidicus gigas off Costa Rica coast%哥斯达黎加海域茎柔鱼角质颚稳定同位素研究

    Institute of Scientific and Technical Information of China (English)

    李建华; 陈新军; 方舟

    2013-01-01

    头足类的角质颚具有结构单一和不易腐蚀的特性,其稳定同位素分析已成为头足类生态学研究的主要方法之一.根据2009年7-8月我国鱿钓船在哥斯达黎加外海捕捞的茎柔鱼样本,对其角质颚进行稳定同位素分析,探讨其与胴长、日龄、性腺成熟度等之间的关系.结果表明,茎柔鱼样本的胴长范围在25.6~35.8 cm之间,体重范围在447.6~1 122.3 g之间,为小型群体;上、下角质颚的δ13C和δ15N有所差别,但无显著性差异(P >0.05);δ13C和δ15N值随着胴长和日龄的增大而增大,两者均符合线性关系;不同性成熟度的个体也有着不同的δ13C和δ15N值,其中性成熟度为Ⅲ期个体的值最大.δ13C和δ15N值反应出茎柔鱼在生长过程中,其栖息环境从大陆架向大洋转变,活动范围也向着生产力更高的海域聚集,同时与性成熟和个体生长过程密切相关.建议今后应结合研究海域的浮游生物,对角质颚等不同硬组织及其不同部位稳定同位素进行深入分析,以便为了解和掌握茎柔鱼的生态学提供理论参考.

  3. Analysis on Physical and Chemical Properties of Dosidicus gigas in the Offshore Waters of Peru%秘鲁外海茎柔鱼理化特性分析

    Institute of Scientific and Technical Information of China (English)

    曲映红; 陈新军; 刘志东; 陈舜胜

    2016-01-01

    以秘鲁外海茎柔鱼为原料,测定可食部分(胴体、裙边和头足)的基本成分,并测定去皮胴体在不同温度下的加热失重情况.结果表明:秘鲁外海茎柔鱼可食部的粗蛋白含量为15.7%~18.3%,粗脂肪含量为0.3%~0.8%,胆固醇含量为1.54~6.15 mg/100 g,可认为是高蛋白低脂肪的水产品.秘鲁外海茎柔鱼胴体的水分含量比一般鱿鱼高,但蒸煮加热时保水能力较强.秘鲁外海茎柔鱼在成分与加工性能上与其他鱿鱼存在一定的差异.

  4. 2003-2012年秘鲁外海茎柔鱼资源丰度年间变化分析%Inter-annual variation in abundance index of Dosidicus gigas off Peru during 2003 to 2012

    Institute of Scientific and Technical Information of China (English)

    许骆良; 陈新军; 汪金涛

    2015-01-01

    茎柔鱼是世界上重要的经济头足类,也是我国大陆鱿钓渔业最重要的捕捞对象之一.根据中国大陆鱿钓船2003-2004年、2006-2012年9年的渔业生产统计数据和卫星遥感获得的海洋环境数据,利用广义线性模型(generalized linear model,GLM)和广义加性模型(generalized additive model,GAM)对秘鲁外海茎柔鱼的资源丰度进行CPUE标准化,分析秘鲁外海茎柔鱼资源丰度年际变化.经显著性检验,得到最终选择加入模型的自变量有年、月、纬度、经度、叶绿素浓度、年与经度交互项、年与纬度交互项、月与经度交互项、月与纬度交互项共9个自变量.GAM结果表明,模型自变量对因变量的决定系数高达42.3%.标准化后CPUE与名义CPUE变化趋势相同,年平均值略低于名义CPUE,2003-2012年秘鲁外海茎柔鱼资源丰度年间变化较大,资源丰度最高的年份为2004年,GLM标准化后的平均CPUE为7.94 t/d;资源丰度最低的年份为2007年,GLM标准化后的平均CPUE为3.28 t/d.

  5. 鱿鱼皮胶原蛋白水解肽抗氧化活性研究%Studies on the antioxidation activity of squid (Dosidicus eschrichitii Steenstrup) skin gelatin hydrolysate

    Institute of Scientific and Technical Information of China (English)

    林琳; 李八方

    2006-01-01

    目的 探讨秘鲁鱿鱼(Dosidieus eschrichitii Steenstrup)皮胶原蛋白多肽组分对自由基的清除作用以及水解产物的体内抗氧化作用,为鱿鱼加工废弃物的高值化利用探索一条新途径.方法 采用化学发光法研究胶原蛋白活性多肽体外对超氧阴离子自由基(O2·-)和羟自由基(·OH)的清除作用,并筛选出体外清除自由基活性最好的组分;灌胃于D-半乳糖致衰老的模型小鼠,测定小鼠血液及皮肤中的超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)活力和丙二醛(MDA)及羟脯氨酸(Hyp)含量.结果 与结论鱿鱼皮胶原蛋白多肽分子量小于2000D组分对O2·-和·OH具有较好的清除效果,该活性多肽组分可以提高小鼠血液及皮肤中SOD和GSH-Px的活力,降低MDA含量,并能提高小鼠皮肤组织中Hyp的含量.

  6. 秘鲁鱿鱼烤制过程中的水分及质构变化%Change of moisture and texture of dosidicus squid during roasting process

    Institute of Scientific and Technical Information of China (English)

    董志俭; 李世伟; 莫尼莎; 吕艳芳; 蔡路昀; 励建荣

    2014-01-01

    鱿鱼丝是现代人喜爱的休闲食品,烤制是鱿鱼丝加工中的关键工序,对鱿鱼的品质有重要的影响.本文主要研究了烤制过程中秘鲁鱿鱼的水分、质地、色泽的变化.结果表明,随着烤制时间的延长,秘鲁鱿鱼的水分含量和水分活度降低,损失的主要为中间水和结合水;烤制过程中鱿鱼肉的硬度、咀嚼性、粘着性均有很大程度的提高,弹性下降.

  7. McCune-Albright syndrome

    Science.gov (United States)

    ... bones in the face Gigantism Irregular, large patchy cafe-au-lait spots , especially on the back ... Acromegaly Adrenal abnormalities Gigantism Hyperparathyroidism Hyperthyroidism Hypophosphatemia Large cafe-au-lait spots on the skin Liver disease, ...

  8. New perceptions of continrntal margin biodiversity

    Digital Repository Service at National Institute of Oceanography (India)

    Menot, L.; Sibuet, M.; Carney, R.S.; Levin, L.A.; Rowe, G.T.; Billett, D.S.M.; Poore, G.; Kitazato, H.; Vanreusel, A.; Galeron, J.; Lavrado, H.P.; Sellanes, J.; Ingole, B.S.; Krylova, E.

    communities. Additional effects of warming may include range expansions and contractions. Examples include the Humbolt (Jumbo) squid (Dosidicus gigas) which follows low oxygen waters northward from Mexico in the eastern Pacific and are now routinely found...

  9. Comparing two radar rainfall products with the help of Multifractal Analysis

    Science.gov (United States)

    Ichiba, Abdellah; Gires, Auguste; Tchiguirinskaia, Ioulia; Bompard, Philippe; Schertzer, Daniel

    2014-05-01

    Distributed rainfall radar data are commonly used in hydrology and increasingly used in urban hydrology. However radar validation and comparison still commonly relies on standard scores such as Nash-Sutcliffe coefficient, Correlation and Quadratic Error, which enable to grasp neither the underlying spatio-temporal structure of the studied rainfall field nor meaningful statistics, i.e. of order larger than two. We implement an innovative methodology that relies on Universal Multifractal (UM) to compare two operational radar products covering the Paris region. The UM framework has been extensively used to characterize and simulate geophysical fields extremely variable over a wide range of scales such as rainfall with the help of only three parameters, which are furthermore physically meaningful. Both Météo-France operational radar mosaic and the CALAMAR radar product use the same single polarization C-band radar data. However their QPE algorithms are different, as well as the calibration with rain gauges. Cartesian fields of final resolution 1 km in space and 5 min in time are used in this study. Three rainfall events that occurred in 2010 and 2011 are used, in order to quantify the quality of the adjustment process we add to this comparison a non-adjusted CALAMAR radar product. As a first step, we compare these radar products to the Val de Marne County network of 27 rain gauges distributed over a 245 Km2 area. Standard scores at various resolutions (5min, 15min, 30min and 1h) are computed. The Météo France radar product is better correlated with these rain gauges data than both CALAMAR products at 5min scale, but we observe the opposite when we increase the time scale. We also observe that the CALAMAR adjustment process improves the correlation with rain gauges. In a second step, both spatial (2D maps) and temporal (1D time series for each pixel) multifractal analyses are performed and the UM parameters computed. Preliminary results suggest that both products do

  10. Infecção por Salmonella typhimurium de origem hídrica em garça gigante (Casmerodius albus egretta, em sua vida livre no Estado do Rio de Janeiro

    Directory of Open Access Journals (Sweden)

    Maria do Amparo Queiroz de Freitas

    1977-10-01

    Full Text Available De uma mortandade de garças de vida livre, no Estado do Rio de Janeiro, Brasil, foi isolada Salmonella typhimurium por hemocultura de material proveniente de uma ave que se mostrava enferma e que à necrópsia não apresentavam lesões a na tomopa tológicas. A Salmonella typhimurium foi também isolada de água de um lago existente no Jardim Zoológico do Rio de Janeiro, onde as aves tinham acesso permanente. Durante a mortandade das aves foi observada uma hepatite necrótica na qual havia colônias bacterianas, tesões atribuídas a esta salmonelose.In a fatal dissease among wild herons (Casmerodius albus egretta, the authors isolated Salmonella typhimurium from tissues. The observations were made in the city of Rio de Janeiro and the infected fowls showed depression (Fig. 1 and 2. The principal gross lesions ocurred in the liver where hepatomegalia and miliary necrosis were observed (Fig. 3. The microscopic examination of the liver showed miliary necrosis centrally occupied by colonies of bacteria (Fig. 4 and 5. The authors isolated also Salmonella typhimurium from waterofa lake where the fowls had access every day. This is the first observation of infection by Salmonella typhimurium in herons (Casmerodius albus egretta according the literature consulted.

  11. Utilização de Três Fontes de Nitrogênio Associadas à Palma Forrageira (Opuntia ficus-indica, Mill. Cv. Gigante na Suplementação de Vacas Leiteiras Mantidas em Pasto Diferido

    Directory of Open Access Journals (Sweden)

    Albuquerque Samuel Salgado Cavalcanti de

    2002-01-01

    Full Text Available O fornecimento da palma forrageira como único alimento não atende as necessidades nutricionais do rebanho, notadamente em proteína e fibra. Nesta pesquisa avaliaram-se fontes de suplementação protéica sobre o desempenho de vacas leiteiras alimentadas com palma e pasto diferido, durante a estação seca, bem como a composição botânica da pastagem. Testaram-se três tratamentos: T1 = pasto diferido (PD + palma + cama de aviário; T2 = PD + palma + farelo de soja e T3 = PD + palma + uréia/sulfato de amônio, em um delineamento de blocos casualizados. Utilizaram-se 12 vacas mestiças 5/8 Holando-Zebu, com produção média de leite de 5,6 kg/dia/vaca e peso vivo (PV médio de 452 kg. O experimento teve duração de 121 dias, sendo 21 dias de período de adaptação. Os resultados para produção de leite in natura (3,38, 5,33 e 3,38 kg/vaca/dia, produção de leite corrigido para 4% de gordura (3,15, 4,98 e 3,11 kg/vaca/dia, variação de peso vivo (-351, 77 e -401 g/vaca/dia e consumo in natura de palma (26,3, 37,8 e 26,3 kg/vaca/dia, para T1, T2 e T3, respectivamente, demonstraram a superioridade do farelo de soja como fonte protéica, em relação aos demais tratamentos. No pasto diferido foram identificados 18 famílias, 32 gêneros e 36 espécies. O capim-milhã (Brachiaria plantaginea (Link Hitch foi o componente de maior participação na composição botânica da pastagem (28,72%.

  12. Diagnosis and treatment of gigantism resulting from pituitary growth hormone adenoma%垂体生长激素腺瘤致巨人症的诊断和治疗

    Institute of Scientific and Technical Information of China (English)

    杨义; 苏长保; 任祖渊; 王任直; 马文斌

    2004-01-01

    巨人症少见,是由于儿童时期体内生长激素(growth hormone,GH)分泌过多所致,分为原发性和继发性两类,原发性GH分泌过多主要为垂体GH腺瘤所致。回顾性分析我院1991年7月至2000年1月期间经手术证实的垂体GH腺瘤所致巨人症7例,报告如下。

  13. El Condicionamiento Operante en el Manejo ex situ de Insuficiencia Renal Crónica en nutria gigante (Pteronura brasiliensis) en la Fundación Zoológica -resumen-

    OpenAIRE

    Y M Nuñez-Moreyra

    2014-01-01

    El manejo en cautiverio de enfermedades como la insuficiencia renal crónica representa un reto para las instituciones encargadas de la conservación ex situ de fauna silvestre. La insuficiencia renal es una condición que se desarrolla de manera espontánea y progresiva en carnívoros de edad media a avanzada durante periodos de tiempo prolongado‚ dificultando en muchas ocasiones la identificación de la causa subyacente. El daño renal es irreversible‚ por tanto‚ el tratamiento está orientado a re...

  14. Latissimus dorsi volteado para reconstrucción de carcinoma basocelular gigante en un paciente anciano Latissimus dorsi turn over flap for giant basal cell carcinoma reconstruction in elderly patient

    OpenAIRE

    J. Balaguer-Cambra; L. Landin Jarillo; I. Gillen Morales

    2009-01-01

    Los carcinomas basocelulares son tumores cutáneos de crecimiento lento aunque pueden llegar a tener un gran tamaño a lo largo de los años si el entorno socioeconómico y asistencial del paciente es pobre, como sucede en el caso que presentamos, en el que la lesión ulcerada en la línea media de la espalda llegó a medir 21 x 13 cm de diámetro. El colgajo de Latissimus Dorsi permite gracias a sus dos pedículos y a ser pivotado, una posibilidad reconstructiva en el caso de pacientes ancianos, evit...

  15. Latissimus dorsi volteado para reconstrucción de carcinoma basocelular gigante en un paciente anciano Latissimus dorsi turn over flap for giant basal cell carcinoma reconstruction in elderly patient

    Directory of Open Access Journals (Sweden)

    J. Balaguer-Cambra

    2009-03-01

    Full Text Available Los carcinomas basocelulares son tumores cutáneos de crecimiento lento aunque pueden llegar a tener un gran tamaño a lo largo de los años si el entorno socioeconómico y asistencial del paciente es pobre, como sucede en el caso que presentamos, en el que la lesión ulcerada en la línea media de la espalda llegó a medir 21 x 13 cm de diámetro. El colgajo de Latissimus Dorsi permite gracias a sus dos pedículos y a ser pivotado, una posibilidad reconstructiva en el caso de pacientes ancianos, evitando el uso de colgajos libres.Basal cell carcinoma are well known as slow local growth cutaneous tumors that can enlarge through years in low socioeconomic and poor health assistance environments, as in the case that we present, with a 21 x 13 cm ulcerated lesion located over back midline. The Latissimus Dorsi muscle flap offers a reliable reconstruction in elderly patients avoiding the use of free flaps. This flap, because of its two different pedicles, can be used to reach defects in opposite directions.

  16. Infecção por Salmonella typhimurium de origem hídrica em garça gigante (Casmerodius albus egretta, em sua vida livre no Estado do Rio de Janeiro

    Directory of Open Access Journals (Sweden)

    Maria do Amparo Queiroz de Freitas

    1977-10-01

    Full Text Available De uma mortandade de garças de vida livre, no Estado do Rio de Janeiro, Brasil, foi isolada Salmonella typhimurium por hemocultura de material proveniente de uma ave que se mostrava enferma e que à necrópsia não apresentavam lesões a na tomopa tológicas. A Salmonella typhimurium foi também isolada de água de um lago existente no Jardim Zoológico do Rio de Janeiro, onde as aves tinham acesso permanente. Durante a mortandade das aves foi observada uma hepatite necrótica na qual havia colônias bacterianas, tesões atribuídas a esta salmonelose.

  17. Modeling and identification of new complementary development opportunities in a Campos Basin offshore giant field; Modelagem e identificacao de novas oportunidades de desenvolvimento complementar de um campo gigante na Bacia de Campos

    Energy Technology Data Exchange (ETDEWEB)

    Gomes, Jose Adilson T.; Steagall, Daniel E.; Lorenzatto, Rudimar Andreis [PETROBRAS, Rio de Janeiro, RJ (Brazil)

    2004-07-01

    The objective of this paper is to present the methodology that has been used for the complementary development of the giant Marlin oil field in the Campos Basin, with the study of the opportunities of new wells and application of new technologies for the enhancement of production, recovery factor and the gain of reserves. This methodology is applied integrating geophysics, geology, engineering, planning and operation, containing: identification of the non drained areas, positioning of new locations, risk analysis, reduction risk analysis actions, production estimation, attractive location selection; conceptual well project with location of the well head, submarine layout, drilling program, multiphase flow curves; drilling schedule, completion, and production commencement; production forecasting with flux simulation using operational reality of the oil, gas, and water treatment production capacity; wells substitution and deviation criteria; project critical resources and preliminary economical evaluation including project risk. The obtained results were the optimization of the project portfolio of new wells considering the identification of new opportunities, schedule and entrance order of wells, helping also in the acquisitions of new data for reservoir risk reduction before project implementation. (author)

  18. Case report 509: Proteus syndrome

    International Nuclear Information System (INIS)

    Radiographic features of Proteus syndrome include asymmetry of limbs, partial gigantism of the hands or feet, and hemihypertrophy. The patient described (a 16-year-old male) manifested features of Proteus syndrome which is another entity in the gamut of conditions associated with localized gigantism. This entity should be suggested particularly when localized gigantism is associated with diffuse intra-abdominal lipomatosis and extensive lipomas involving the chest wall and back. (orig.)

  19. 鱿鱼皮胶原蛋白多肽对B16黑素瘤细胞黑素合成的影响%Effects of collagen polypeptides from squid (Dosidicus gigas)skin on melanogenesis in B16 melanoma cells

    Institute of Scientific and Technical Information of China (English)

    王静凤; 王奕; 崔凤霞; 李八方; 薛长湖

    2007-01-01

    目的 研究不同分子量鱿鱼皮胶原蛋白多肽SP1(Mr>10 000u)、SP2(6 000u<Mr<10 000u)、SP3(2 000u<Mr<6 000u)对小鼠B16黑素瘤细胞黑素含量、酪氨酸酶活性及酪氨酸酶基因表达的影响.方法 采用MTT法测定细胞增殖活性,NaOH裂解法测定黑素含量,多巴氧化法测定酪氨酸酶活性,逆转录-聚合酶链反应(RT-PCR)测定酪氨酸酶mRNA表达.结果 不同分子量鱿鱼皮胶原蛋白多肽均能明显降低B16黑素瘤细胞黑素含量(P<0.05,P<0.01),抑制酪氨酸酶活性(P<0.01),并下调酪氨酸酶mRNA表达(P<0.05,P<0.01),且剂量效应关系明显.结论 不同分子量鱿鱼皮胶原蛋白多肽均具有明显抑制B16黑素瘤细胞黑素合成的作用,其中SP2的抑制效果较SP1、SP3明显(P<0.05).

  20. Protective Effects of Collagen Extracted from Dosidicus gigas Skin on MC3T3-E1 Cell Induced by H2O2%鱿鱼皮胶原蛋白对H2O2诱导MC3T3-E1损伤的修复作用

    Institute of Scientific and Technical Information of China (English)

    蔡江佳; 李晔; 张云云; 童茜茜; 王峰; 苏秀榕

    2015-01-01

    目的:探究秘鲁鱿鱼皮胶原蛋白增强MC3T3-E1细胞抗自由基损伤的作用机制.方法:将培养的MC3T3-E1细胞分为正常对照组、H2O2损伤组和胶原蛋白干预组;利用MTT法确定H2O2的半数抑制浓度,建立自由基损伤的细胞模型,通过试剂盒测定SOD活性和MDA含量来确定最佳的胶原蛋白添加量;在倒置显微镜下观察各分组的细胞形态;用流氏细胞仪检测细胞凋亡率,并分析细胞增殖周期;实时荧光定量RT-PCR测定HSP70和Bax的表达水平.结果:与H2O2损伤组相比,胶原蛋白干预组SOD活性升高(P<0.05),MDA含量降低(P<0.05),凋亡率降低(P<0.05),G0-G1期细胞百分率减小(P<0.05),S期细胞百分率增大(P<0.05),Bax表达减弱,HSP70表达增强(P<0.05).结论:摄入一定剂量的H2O2会导致MC3T3-E1成骨细胞的氧化损伤并促进其凋亡,而胶原蛋白可以改善此类损伤对MC3T3-E1细胞的影响.

  1. Conclusion and Analysis on the Experimental Fishing of Dosidicus gigas in the Offlying Sea of Peru and Costa Rica in 2001%2001年秘鲁外海和哥斯达黎加外海茎柔鱼探捕结果及其分析

    Institute of Scientific and Technical Information of China (English)

    叶旭昌

    2002-01-01

    本文对2001年秘鲁外海和哥斯达黎加外海茎柔鱼探捕调查的海况、渔获、渔场和生物学等数据进行分析.结果表明秘鲁外海表层水温呈自东向西、自南向北逐渐升高的趋势,表层到100m水深存在温跃层;茎柔鱼的优势胴长为24~48cm,胴长和体重的关系为:Y=6×10-6L3.2598(R2=0.9924);渔场主要集中在14°00'S、80°00'W附近海区.调查表明秘鲁外海和哥斯达黎加外海茎柔鱼渔场具有较高的开发价值,但茎柔鱼钓捕技术还有待进一步的研究.

  2. 真空包装结合甲醛抑制剂对鱿鱼丝贮藏品质的影响%Effect of Vacuum Package Combined with Formaldehyde Inhibitors on the Quality of Dried Squid Dosidicus gigas during Storage

    Institute of Scientific and Technical Information of China (English)

    吴帅帅; 朱军莉; 沈鹏; 李迪伟; 励建荣

    2014-01-01

    为了探讨鱿鱼制品贮藏过程中内源性甲醛的调控技术,在秘鲁鱿鱼丝加工的复水工序分别浸泡水、0.15%荼多酚及复合甲醛抑制剂——0.05%荼多酚和5mmol/L柠檬酸,采用普通包装和真空包装制品.通过分析鱿鱼丝制品25℃贮藏过程中营养指标、氧化三甲胺分解产物、VB-N含量和色差,评价真空包装结合茶多酚(TP)和柠檬酸(CA)甲醛抑制剂对秘鲁鱿鱼丝货架期品质的影响.试验结果显示,鱿鱼丝在室温贮藏过程中发生明显的水分损失,高含量的氧化三甲胺转化为二甲胺和甲醛,褐变反应(P<0.05).相对于普通包装,真空包装能显著降低鱿鱼丝贮藏过程中水分损失和蛋白质分解,抑制氧化三甲胺降解和美拉德反应(P<0.05),而对TVB--N的积累无显著影响.添加两种甲醛抑制剂,能显著抑制鱿鱼丝中甲醛和二甲胺的生成,并有效降低鱿鱼丝中TVB--N的形成(P<0.05);0.15%茶多酚影响鱿鱼丝的色泽.真空包装结合0.05%荼多酚和5mmol/L柠檬酸复合甲醛抑制剂,对保持鱿鱼丝贮藏品质,抑制氧化三甲胺降解和美拉德反应效果最佳.

  3. Effect of Collagen Peptide Extracted from Dosidicus gigas Skin on Proliferation, Differentiation and Calcification of MC3T3-E1 Cell Induced by Cd%鱿鱼皮胶原蛋白水解肽对镉抑制MC3T3-E1增殖、分化及钙化的影响

    Institute of Scientific and Technical Information of China (English)

    蔡江佳; 李晔; 全晶晶; 蔺佳良; 张云云; 王峰; 苏秀榕

    2015-01-01

    目的:探究秘鲁鱿鱼皮胶原蛋白水解肽增强MC3T3-E1细胞抗骨质疏松的作用.方法:将培养的MC3T3-E1细胞分为正常对照组、氯化镉损伤组和胶原蛋白水解肽干预组;利用MTT法确定氯化镉的半数抑制浓度,建立细胞损伤模型;根据各组细胞增殖率差异,确定最佳胶原蛋白水解肽的添加量;通过细胞周期、凋亡,碱性磷酸酶活性的测定及Alizarin red染色法分析胶原蛋白水解肽在细胞增殖、分化、钙化阶段拮抗氯化镉的抑制作用.结果:与氯化镉损伤组相比,胶原蛋白水解肽干预组细胞活性升高(P<0.01);处于G1期的细胞数量减小(P<0.05),S期细胞数量增大(P<0.05);凋亡率降低(P<0.05);9,12,15 d时AKP活性升高(P<0.05,P<0.01,P<0.01).结论:摄入一定剂量的氯化镉会抑制MC3T3-E1成骨细胞增殖、分化和钙化.胶原蛋白水解肽在一定程度上可改善此类损伤对MC3T3-E1细胞的影响.

  4. 智利外海茎柔鱼资源密度分布与渔场环境的关系%Study on the resource density distribution of Dosidicus gigas and marine environment in the high sea waters off Chile

    Institute of Scientific and Technical Information of China (English)

    钱卫国; 陈新军; 郑波; 刘必林

    2008-01-01

    根据2006年4-6月我国鱿钓船对东南太平洋智利外海茎柔鱼探捕所获资料,采用效能比方法,对茎柔鱼资源密度指标CPUE值进行了估算.分析表明,整个探捕海域均有茎柔鱼分布,且资源密度较高,但不同区域资源密度有所差异.南部区域(78°30'~84°W,37°30'~41°S),CPUE范围为0.4~10.3尾/线·h,平均2.8尾/线·h,高CPUE(5.0尾/线·h以上)区域分布在79°~79°30'W、40°~40°30'S附近.北部区域(76°~78°W,28°~30°S),CPUE范围为1.0~5.6尾/线·h,平均3.1尾/线·h,高CPUE(5.0尾/线·h以上)区域分布在28°30'S、77°W附近.南部和北部区域的温盐结构差异显著,南部区域各层的水温和盐度均低于北部区域相应水层.经分析,南部区域CPUE与上层(25~75 m)水温和深水层(300~325 m)盐度的关系较为密切,北部区域CPUE与深层水温(150~250 m)和盐度的关系较为密切.

  5. 个体生长对秘鲁外海茎柔鱼角质颚形态变化的影响%Effect of individual growth on beak morphometry of jumbo flying squid, Dosidicus gigas off the Peruvian Exclusive Economic Zone

    Institute of Scientific and Technical Information of China (English)

    胡贯宇; 陈新军; 方舟

    2016-01-01

    为研究个体生长对茎柔鱼角质颚形态变化的影响,本研究根据2009-2014年中国鱿钓船在秘鲁外海(79°22′~84°30′W、10°00′~18°16′S)采集的茎柔鱼样本,提取出1208尾茎柔鱼的角质颚,对角质颚的12项外部形态进行测量,并利用角质颚微结构的生长纹来估算茎柔鱼的日龄,采用方差分析法(ANOVA)分析了不同胴长组、不同日龄组以及不同性成熟阶段角质颚主要外部形态特征的差异.结果表明,角质颚各形态参数在雌、雄个体间的差异性极显著(P<0.01),且雌性个体的角质颚大于雄性个体.最小显著差多重比较法(LSD)结果显示,在不同胴长组、不同日龄组和不同性成熟阶段,雌、雄个体角质颚的生长存在差异,相同性别个体角质颚不同部位的生长也不同;在胴长大于400 mm、雌性个体大于300日龄、雄性个体大于250日龄以及性腺成熟度在Ⅲ期以后时,角质颚的生长较为缓慢.研究表明,个体大小、日龄和性成熟对茎柔鱼角质颚的形态变化有一定的影响.

  6. 秘鲁外海茎柔鱼产量分布及其与表温关系的初步研究%Preliminary study on the catch distribution of Dosidicus gigas and its relationship with sea surface temperature in the offshore waters of Peru

    Institute of Scientific and Technical Information of China (English)

    陈新军; 赵小虎

    2006-01-01

    根据2004年1-12月我国鱿钓船在东南太平洋海域茎柔鱼的生产统计和表温数据,按经纬度1°×1°的格式利用Marine Exlporer4.0软件,对其各月产量、平均日产量的分布以及与表温的关系进行分析.结果表明,1-7月产量主要集中在14°~17° S、80°~84° W海域,8-9月在9°~11° S、81°~83° W海域,12月在14° S以南海域.由此判断,作业渔场随月份进行西北-东南方向移动.全年都有较高的平均日产量,主渔汛为5-12月.作业渔场的适宜表温为18~22 ℃、24~25 ℃,其结果经过K-S检验.但适宜表温随季节发生变化.

  7. 秘鲁鱿鱼肌原纤维蛋白提取和加热条件对其凝胶特性的影响%Effects of Extraction and Heating Conditions on Gel Characteristics of Dosidicus gigas Myofibrillar Protein

    Institute of Scientific and Technical Information of China (English)

    周逸; 金淼; 徐亦及; 唐剑波; 杨文鸽

    2013-01-01

    目的:探讨提取和加热条件对秘鲁鱿鱼肌原纤维蛋白凝胶特性的影响.方法:以秘鲁鱿鱼肉为原料,分析测定不同提取条件和加热方式下鱿鱼肌原纤维蛋白的凝胶特性.结果:提取液KCl浓度、pH值对鱿鱼肌原纤维蛋白的凝胶特性有极显著影响.低离子强度下时,形成的凝胶较致密,其凝胶保水性和质构特性(硬度、弹性、黏性)较佳;提取液pH值的增加有利于形成良好的凝胶网络,但当pH值超出一定范围后,保水性和质构特性降低.加热方式对鱿鱼蛋白形成的凝胶特性影响极显著.随着高温段加热温度的升高,凝胶的保水性维持在较高水平,硬度、弹性、黏性显著增加;而低温(40℃)段加热时间在一定范围内时,凝胶保水性和质构特性较佳;结论:KCl浓度0.2mol/L、提取液pH7.0、低温(40℃)加热时间60~80min、高温段加热温度90℃时,鱿鱼肉肌原纤维蛋白形成的凝胶特性较优.

  8. 秘鲁外海茎柔鱼渔场分布与表温及表温距平值关系的初步探讨%DISTRIBUTION OF FISHING GROUND OF JUMBO FLYING SQUID (DOSIDICUS GIGAS) AND ITS RELATIONSHIP BETWEEN SST AND SSTA IN THE WATERS OFF PERU

    Institute of Scientific and Technical Information of China (English)

    胡振明; 陈新军

    2008-01-01

    根据2006年6~11月我国远洋船队秘鲁茎柔鱼生产统计及其表温(SST)、表温距平值(SSTA)数据,利用GIS软件ArcGIS9.0,对各月平均日产量(CPUE)和SST、SSTA关系的分布图进行绘制并分析,计算作业渔场重心.结果表明,6~8月的产量和CPUE比其他月份高.6~11月作业渔场在80°W~85°W,10°S~15°S,渔场重心在81°W~84°W,11°S~14°S.产量主要集中在12°~14°S海域,约占年总产量的72.72%,与2004-2005年有较大差异.6月作业渔场的SST为21~23℃,7、8月分别为19~21℃和18~20℃,9~11月为18~21℃.6月作业渔场的SSTA为0.1~0.2℃,7、8月分别为0.5~0.7℃,9~11月分别为0.2~0.6℃、1.0~1.4℃和0.4~0.7℃.研究认为,茎柔鱼渔场分布与SST、SSTA关系密切,可作为寻找中心渔场的海洋环境指标.

  9. 茶多酚复合柠檬酸和氯化钙对秘鲁鱿鱼丝贮藏品质的影响%Effect of Tea Polyphenols Combined with Citric Acid and Calcium Chloride on the Quality of Dried-seasoned Squid (Dosidicus gigas) during Storage

    Institute of Scientific and Technical Information of China (English)

    朱军莉; 孙丽霞; 董靓靓; 李学鹏; 励建荣

    2013-01-01

    研究评价了加工工艺中0.15%茶多酚及0.05%茶多酚复合5 mmol/L柠檬酸和5 mmol/L氯化钙处理对秘鲁鱿鱼丝25℃贮藏过程中理化和感官特性的影响.结果显示,鱿鱼丝在贮藏中水分、粗蛋白、粗脂肪、pH和还原力均显著下降(P<0.05).鱿鱼丝L*显著降低,C*明显增加(P<0.05),表明贮藏过程中发生明显的褐变反应.鱿鱼丝中乳糖不断分解成半乳糖和葡萄糖(P<0.05),氧化三甲胺(Trimetlyamineoxde,TMAO)降解成二甲胺(Dimethyamine,DMA)和甲醛(P<0.05),特别是在贮藏的90 d.而茶多酚及复合柠檬酸和氯化钙处理能显著减少水分损失,抑制乳糖分解和TMAO降解,延缓脂肪氧化和TVB-N积累(P<0.05).因此,茶多酚和柠檬酸复合添加剂对改善鱿鱼丝贮藏过程中的品质效果良好.

  10. 基于栖息地指数的智利外海茎柔鱼渔场预报模型优化%Optimization Fishing Ground Prediction Models of Dosidicus gigas in the High Sea off Chile Based on Habitat Suitability Index

    Institute of Scientific and Technical Information of China (English)

    方学燕; 陈新军; 丁琪

    2014-01-01

    根据2010~2013年3-5月渔汛期间智利外海茎柔鱼生产统计数据以及海表面温(SST)、海表面盐度(SSS)、海表面高度(SSH)及叶绿素浓度(Ch1-a)等海洋环境数据,以外包络法建立基于作业努力量和CPUE的各环境变量适应性指数(SI).以SST作为建立SI的基准因子,采用算术平均法构建栖息地综合适应性指数模型(HSI),并选择最优栖息地指数模型,以用于茎柔鱼渔场预报,并利用2013年智利外海茎柔鱼生产数据进行验证.结果表明,以SST和SSS为因变量构建的HSI模型为最佳,且基于作业努力量的HSI模型要好于基于CPUE的HSI模型.以作业努力量为SI指标、基于SST和SSS为因子的HSI模型能较好预报智利外海茎柔鱼渔场.

  11. Effect of sexual maturity and size on statolith growth of jumbo flying squid Dosidicus gigas in the high sea waters off Chile%性成熟和个体大小对智利外海茎柔鱼耳石生长的影响

    Institute of Scientific and Technical Information of China (English)

    陈新军; 陆化杰; 刘必林; 钱卫国; 田思泉

    2010-01-01

    根据2007-2008年智利外海茎柔鱼资源调查期间采集的样本,以耳石最大宽度MW与其总长TSL之比作为表征耳石生长的指标,利用方差分析研究性成熟和个体大小对耳石生长的影响.分析认为,雌性个体的耳石MW/TSL与性腺成熟度存在相关性,性成熟度I级与Ⅲ级、Ⅱ级与Ⅲ级个体的耳石MW/TSL存在显著差异(P<0.05);而雄性个体的耳石MW/TSL与性腺成熟度无关.雌性个体的耳石MW/TSL与胴长也存在着相关性,胴长300~400 mm的个体与500~600 mm和600~700 mm、胴长400~500 mm与500~600 mm和600-700mm的雌性个体,它们耳石MW/TSL差异显著(P<0.05),胴长为400~500 mm至500~600mm的个体,其MW/TSL增加迅速,差异极显著(P<0.01).胴长350~400 mm与400~500mm、400~450 mm与450~500 mm的雄性个体,它们耳石MW/TSL也存在显著差异(P<0.05),胴长400~450 mm时的MW/TSL值为最小.研究表明,性成熟和个体大小对智利外海茎柔鱼耳石的生长有影响,但雌雄个体有差别.

  12. 秘鲁外海茎柔鱼渔场分布和水温结构的关系%Distribution of fishing ground of jumbo flying squid (Dosidicus gigas) and its relationship with structure of sea water temperature in the waters off Peru

    Institute of Scientific and Technical Information of China (English)

    胡振明; 陈新军; 周应祺

    2009-01-01

    分布在东南太平洋海域的茎柔鱼是重要的经济性头足类,是我国鱿钓船队的主要捕捞对象之一.研究茎柔鱼渔场分布及其与水温的水平、垂直结构等关系,是探索渔场形成机制及其规律的重要内容.本文根据2006年1-12月我国鱿钓船在秘鲁外海的渔捞记录、表温(SST)和5~180 m垂直水温等资料,用3种方法计算SST的水平梯度(Dmax,Dsquare和Dmean),用ArcGIS 9.0和Sufer8.0软件分析绘制单船平均日产量(CPUE)和SST、SST水平梯度关系的分布图、水温垂直结构分布图,分析茎柔鱼渔场分布及其与水温结构的关系.结果表明,全年中心渔场分布在80-85°W、10~17°S,SST为18~28℃,产量分布呈现明显的空间变化.其中,6-8月为全年最高产时期,其中心渔场分布在81~83°W、12~13°S,相应的SST为18~23℃.SST水平梯度与渔场分布关系密切,水平梯度Dsquare和产量的拟合度为最优(P<0.001),中心渔场相应的Dsquare为0.6-1.7℃.水温垂直结构分析认为,6-8月通常在81°W、12-13°S附近形成上升流中心,中心渔场基本位于上升流冷水团边缘81°30'~82°30'W.研究认为,该渔场因上升流而形成,主要分布在上升流引起冷水与外洋暖水的交汇区,与SST、SST水平结构、水温垂直结构关系极为密切.

  13. Comparative analysis of genetic diversity of Dosidicus gigas from eastern Pacific Ocean based on molecular markers of mitochondrial DNA%基于线粒体DNA分子标记的东太平洋茎柔鱼群体遗传多样性比较分析

    Institute of Scientific and Technical Information of China (English)

    刘连为; 许强华; 陈新军; 闫杰; 余为; 王从军

    2013-01-01

    为合理开发利用东太平洋茎柔鱼资源,需要准确掌握其种群结构.基于线粒体细胞色素b(Cytb)与细胞色素氧化酶Ⅰ(COⅠ)2个分子标记对茎柔鱼赤道海域与秘鲁外海2个地理群体的遗传多样性现状进行比较分析.分析认为,基于Cytb基因所有序列得到2个群体总的单倍型数、单倍型多样性指数、核苷酸多样性指数及平均核苷酸差异数分别为7、(0.397±0.079)、(0.001 09±0.000 96)和0.600,秘鲁外海群体单倍型多样性指数仅为(0.282±0.101),明显低于赤道海域群体.基于CO Ⅰ基因所有序列得到2个群体总的单倍型数、单倍型多样性指数、核苷酸多样性指数及平均核苷酸差异数分别为17、(0.787±0.051)、(0.00290±0.001 38)和1.802.单倍型网络关系图及两两群体间遗传分化系数Fst分析结果显示,赤道海域群体与秘鲁外海群体不存在显著的遗传差异(Cytb:Fst=0.005 91,P>0.05;COⅠ:Fst=0.055 23,P>0.05),2个地理群体可能在赤道海域海流的作用下发生基因交流.单倍型网络关系图、中性检验和核苷酸不配对分析结果均表明,茎柔鱼经历过近期群体扩张事件,发生群体扩张的时间在138 900 ~167 900年前.

  14. Genetic Variation Analysis of Dosidicus gigas from Equatorial Waters and off the Peruvian Exclusive Economic Zones Using Microsatellite Markers%基于微卫星标记的茎柔鱼赤道海域群体与秘鲁外海群体遗传变异分析

    Institute of Scientific and Technical Information of China (English)

    刘连为; 陈新军; 许强华; 李伟文; 王从军; 余为

    2015-01-01

    茎柔鱼广泛分布在东太平洋海域,分布海域广、群体结构复杂,赤道附近海域(120°W~110°W)群体与秘鲁外海(5°S~20°S)群体是否存在关联,目前尚不清楚.本文通过基因组高通量测序技术获得了12个多态性SSR位点,利用这12个位点,对茎柔鱼赤道海域群体与秘鲁外海群体进行遗传变异分析.结果表明,所有的SSR位点均为高度多态性位点(PIC为0.795~0.945),位点DG07与DG09极显著偏离Hardy-Weinberg平衡(P<0.01).赤道海域群体(Ho=0.725,Hc=0.897)与秘鲁外海群体(Ho=0.697;He=0.874)均显示出较高的遗传多样性水平,群体间存在显著的遗传分化(Fst=0.020 46,P<0.01).太平洋赤道海域近表层存在的复杂海流系统有可能阻碍群体间发生基因交流.建议将茎柔鱼赤道海域群体与秘鲁外海群体看作2个管理单元.

  15. Elementos de colonialidad y biopolítica en una historia caribeña (ficticia

    Directory of Open Access Journals (Sweden)

    Marta Cabrera

    2007-10-01

    Full Text Available La primera novela colombiana, Yngermina o la hija de Calamar (Juan José Nieto, 1844, re-escritura de la historia regional cartagenera como locus de civilización con elementos utópicos, delinea un cuerpo político ideal moldeado por dinámicas particulares de raza y género y es empleada en este artículo como espacio para observar las contradicciones del discurso liberal decimonónico desde la óptica de la biopolítica y la colonialidad del poder.

  16. Axiomas de estar por casa: la matemática de la mesa perfecta

    OpenAIRE

    Alsina, Claudi

    2010-01-01

    Evidentemente usted puede comer andando mientras hinca el diente a un bocadillo de calamares, puede tomar un desayuno de pie en la cocina o comer una hamburguesa dentro del coche. El afán de comer lleva a los humanos a aceptar condiciones infrahumanas para cometer su ataque al cocido o al croissant. Habrá observado en muchas ocasiones personas devorando un sandwhich en un repleto vagón de metro o tomar un café sentándose en la cama. Incluso hay personas que hacen simulacros de comer en los av...

  17. Identification and estimation of size from the beaks of 18 species of cephalopods from the Pacific Ocean

    OpenAIRE

    Wolff, Gary A.

    1984-01-01

    A method of identifying the beaks and estimating body weight and mantle length of 18 species of cephalopods from the Pacific Ocean is presented. Twenty specimens were selected from each of the following cephalopod species: Symplectoteuthis oualaniensis, Dosidicus gigas, Ommastrephes bartramii, S. luminosa, Todarodes pacificus, Nototodarus hawaiiensis, Ornithoteuthis volalilis, Hyaloteuthis pelagica, Onychoteuthis banksii, Pterygioteuthis giardi, Abraliopsis affinis, A. felis, Liocranchia r...

  18. The Contrastive Study about Therapeutical Effect of Treating Gigant Prolactinomas Using Completely Excision with Operation or Operation Associated with Gamma Knife%巨型垂体泌乳素腺瘤手术全切除及手术与γ-刀联合治疗疗效对比分析

    Institute of Scientific and Technical Information of China (English)

    段元周; 肖其华; 毛伯镛; 黄思庆

    2006-01-01

    目的:探讨巨型垂体泌乳素腺瘤合理有效的治疗方式.方法:采用手术全切除及手术与γ-刀联合治疗160例巨型垂体泌乳素腺瘤,并对其疗效进行对比分析.结果:联合治疗组较手术全切除组患者复发率低,且术后并发症少而轻.结论:手术与γ-刀联合治疗为巨型垂体泌乳素腺瘤更有效的治疗方法.

  19. Enanos, gigantes, princesas y dragones en la Antigüedad clásica: algunas conexiones entre el cuento tradicional, la literatura infantil y el mito clásico / Dwarfs, giants, princesses and dragons in classical Antiquity: some connections between folktale, children’s literature and classical myth

    Directory of Open Access Journals (Sweden)

    Montserrat Pons Tovar

    2012-09-01

    Full Text Available Resumen: La intención principal del presente artículo no es dar unas directrices precisas a los docentes de primaria, sino presentarles un material alternativo a los cuentos tradicionales y la literatura infantil basado en las raíces culturales de nuestra civilización y su rico patrimonio a fin de que estos lo adapten de la manera que crean más adecuada a las necesidades de sus alumnos.Abstract: The main intention of this article is not giving precise instructions to the teachers in primary education, but to present an alternative material to folktales and children’s literature based on the cultural roots of our civilization and its rich heritage so that they fit the way it seems most appropriate to the needs of their pupils.

  20. Crescimento ponderal de filhotes de tartaruga gigante da Amazônia (Podocnemis expansa) submetidos a tratamento com rações isocalóricas contendo diferentes níveis de proteína bruta Body growth of one-month giant Amazonian turtle (Podocnemis Expansa) fed isocaloric diet with different levels of crude protein concentration

    OpenAIRE

    Vinicius Augusto Sá; Leonardo C. Quintanilha; Gustavo Eduardo Freneau; Vera Lucia Ferreira Luz; Arcádio de Los Reyes Borja; Paulo César Silva

    2004-01-01

    A criação de Podocnemis expansa, a tartaruga-da-amazônia, com finalidade comercial foi implantada no Brasil em 1992. Contudo, muitas questões acerca do manejo, da nutrição, da sanidade e, principalmente, da reprodução ainda são obscuras. Visando contribuir para o desenvolvimento de uma metodologia alimentar da espécie, objetivou-se testar diferentes níveis de proteína da dieta. Uma amostra de 480 animais neonatos de, aproximadamente, um mês de vida foram trazidos de uma área de proteção local...

  1. Complex paraclinoidal and giant cavernous aneurysms: importance of preoperative evaluation with temporary balloon occlusion test and SPECT Aneurismas paraclinoideos complexos e cavernosos gigantes: importância da avaliação pré-operatória com teste de oclusão temporária com balão e SPECT

    OpenAIRE

    Antônio Aversa do Souto; Flavio S. Domingues; Gaudencio Espinosa; Eduardo Wajnberg; Haroldo Chagas; Rodrigo Tragante; Marcelo Altino; Charles André; Jorge Marcondes de Souza

    2006-01-01

    In the treatment of complex paraclinoidal and giant cavernous aneurysms, preservation of the patency of the internal carotid artery (ICA) is not always possible, and therapeutic occlusion of the carotid is still an important option for their management. A complete preoperative evaluation of the carotid reserve circulation, including the use of temporary balloon occlusion test and single photon emission computerized tomography (SPECT) should be included in the current paradigms of paraclinoida...

  2. The evolution of high energy accelerators

    Energy Technology Data Exchange (ETDEWEB)

    Courant, E.D.

    1989-10-01

    In this lecture I would like to trace how high energy particle accelerators have grown from tools used for esoteric small-scale experiments to gigantic projects being hotly debated in Congress as well as in the scientific community.

  3. Der längste Kühlschrank

    CERN Multimedia

    Grosse, Angela

    2006-01-01

    What happened in the seconds following the big band: The new particle accelerator should answer to this question. The gigantic energy which are produced in it probably will let also tiny black holes appear. (1 page)

  4. The evolution of high energy accelerators

    International Nuclear Information System (INIS)

    In this lecture I would like to trace how high energy particle accelerators have grown from tools used for esoteric small-scale experiments to gigantic projects being hotly debated in Congress as well as in the scientific community

  5. Die Jagd nach dem Allerkleinsten

    CERN Multimedia

    Wolter, Uwe

    2006-01-01

    Only with probes and telescopes scientists do not explore the universe. To understand the processes in the cosmos, researchers feign Big Bang in gigantic devices and look with extremely sensitive detectors for the most elementary particles (1 page)

  6. Welt in Fesseln

    CERN Multimedia

    Grolle, J

    2006-01-01

    A physicist from Harvard is impassioned for hidden dimension of the universe. The observable world, according to its assumption, would be only one among many islands in the middle of a gigantic space (4 pages)

  7. Talking about accidents

    International Nuclear Information System (INIS)

    It is argued that the public's emotional fear of the hypothetical, very unlikely, gigantic nuclear accident is partly caused by the nuclear industry's incorrect use of language within its own professional discussions. Improved terminology is suggested. (U.K.)

  8. Spectroscopic binaries among a complete sample of hip- parcos m giants

    Directory of Open Access Journals (Sweden)

    A. Jorissen

    2004-01-01

    Full Text Available Presentamos el primer diagrama per odo-excentricidad para binarias entre las estrellas gigantes M de campo; encontramos una frecuencia de binarias espectrosc opicas de por lo menos 8%.

  9. New numerical models on giant planet formation

    Directory of Open Access Journals (Sweden)

    A. Fortier

    2006-01-01

    Full Text Available Presentamos nuestros resultados sobre la formaci on de planetas gigantes dentro del marco del mecanismo de inestabilidad nucleada. Consideramos el r egimen de crecimiento olig arquico para el n ucleo s olido y una reducci on en la opacidad de los granos. Bajo estas suposiciones, la formaci on de planetas gigantes in situ se puede alcanzar en una escala de tiempo m as corta que la duraci on de vida de discos protoplanetarios.

  10. Infiltration of chitin by protein coacervates defines the squid beak mechanical gradient

    OpenAIRE

    Y. Tan; Hoon, S; Guerette, PA; Wei, W; Ghadban, A; Hao, C; Miserez, A; Waite, JH

    2015-01-01

    © 2015 Nature America, Inc. All rights reserved. The beak of the jumbo squid Dosidicus gigas is a fascinating example of how seamlessly nature builds with mechanically mismatched materials. A 200-fold stiffness gradient begins in the hydrated chitin of the soft beak base and gradually increases to maximum stiffness in the dehydrated distal rostrum. Here, we combined RNA-Seq and proteomics to show that the beak contains two protein families. One family consists of chitin-binding proteins (DgCB...

  11. Cross-linking Chemistry of Squid Beak*

    OpenAIRE

    Miserez, Ali; Rubin, Daniel; Waite, J. Herbert

    2010-01-01

    In stark contrast to most aggressive predators, Dosidicus gigas (jumbo squids) do not use minerals in their powerful mouthparts known as beaks. Their beaks instead consist of a highly sclerotized chitinous composite with incremental hydration from the tip to the base. We previously reported l-3,4-dihydroxyphenylalanine (dopa)-histidine (dopa-His) as an important covalent cross-link providing mechanical strengthening to the beak material. Here, we present a more complete characterization of th...

  12. Feeding of blue marlin Makaira nigricans off Mazatlan, Sinaloa, Mexico

    OpenAIRE

    Leonardo Abitia-Cárdenas; Dana Arizmendi-Rodríguez; Napoleón Gudiño-González; Felipe Galván-Magaña

    2010-01-01

    We analyzed the stomach contents of 52 blue marlins caught between October 2002 and October 2004 by the sport-fishing fleet of Mazatlan, Sinaloa, in the gulf of California, Mexico. Blue marlin feed on 15 food items. According to the index of relative importance (IRI), the most important prey were the frigate or bullet mackerel Auxis spp. (52%) and jumbo squid Dosidicus gigas (30%).

  13. Trophic relationships between sperm whales and the jumbo squid using stable isotopes of C and N

    OpenAIRE

    Ruiz Cooley, R.I.; Gendron, Diane; Aguíñiga García, Sergio; Mesnick, S.L.; Carriquiry, L.D.

    2004-01-01

    The trophic position and the predator–prey relationship between the sperm whale Physeter macrocephalus and the jumbo squid Dosidicus gigas were examined by measuring stable isotope ratios of carbon and nitrogen. Skin samples of sperm whales and muscle samples of small and large jumbo squid were collected between 1996 and 1999 in the Gulf of California. Gender determination through molecular analysis and field identification of size were used to identify adult male, female and immature male sp...

  14. Revealing the potential of squid chitosan-based structures for biomedical applications

    OpenAIRE

    Reys, L. L.; S.S. Silva; Oliveira, Joaquim M.; Caridade, S. G.; Mano, J. F.; Silva, Tiago H.; Reis, R. L.

    2013-01-01

    In recent years, much attention has been given to different marine organisms, namely as potential sources of valuable materials with a vast range of properties and characteristics. In this work, β-chitin was isolated from the endoskeleton of the giant squid Dosidicus gigas and further deacetylated to produce chitosan. Then, the squid chitosan was processed into membranes and scaffolds using solvent casting and freeze-drying, respectively, to assess their potential biomedical application. The ...

  15. Distribution of ommastrephid paralarvae in the eastern tropical Pacific

    OpenAIRE

    Staaf, Danna J.; Redfern, Jessica V.; Gilly, William F; Watson, William; Ballance, Lisa T.

    2013-01-01

    Jumbo squid (Dosidicus gigas) and purpleback squid (Sthenoteuthis oualaniensis) (Teuthida: Ommastrephidae) are thought to spawn in the eastern tropical Pacific. We used 10 years of plankton tow and oceanographic data collected in this region to examine the reproductive habits of these 2 ecologically important squid. Paralarvae of jumbo squid and purpleback squid were found in 781 of 1438 plankton samples from surface and oblique tows conducted by the Southwest Fisheries Science Center (NOAA) ...

  16. Range Expansion of the Jumbo Squid in the NE Pacific: δ15N Decrypts Multiple Origins, Migration and Habitat Use

    OpenAIRE

    Ruiz-Cooley, Rocio I.; Ballance, Lisa T.; McCarthy, Matthew D.

    2013-01-01

    Coincident with climate shifts and anthropogenic perturbations, the highly voracious jumbo squid Dosidicus gigas reached unprecedented northern latitudes along the NE Pacific margin post 1997-98. The physical or biological drivers of this expansion, as well as its ecological consequences remain unknown. Here, novel analysis from both bulk tissues and individual amino acids (Phenylalanine; Phe and Glutamic acid; Glu) in both gladii and muscle of D. gigas captured in the Northern California Cur...

  17. The Transition from Stiff to Compliant Materials in Squid Beaks

    OpenAIRE

    Miserez, Ali; Schneberk, Todd; Sun, Chengjun; Zok, Frank W.; Waite, J. Herbert

    2008-01-01

    The beak of the Humboldt squid Dosidicus gigas represents one of the hardest and stiffest wholly organic materials known. As it is deeply embedded within the soft buccal envelope, the manner in which impact forces are transmitted between beak and envelope is a matter of considerable scientific interest. Here, we show that the hydrated beak exhibits a large stiffness gradient, spanning two orders of magnitude from the tip to the base. This gradient is correlated with a chemical gradient involv...

  18. Valorization of chitosan from squid pens and further use on the development of scaffolds for biomedical applications

    OpenAIRE

    Reys, L. L.; S.S. Silva; Oliveira, Joaquim M.; Frias, A. M.; Mano, J. F.; Silva, Tiago H.; Reis, R. L.

    2012-01-01

    Objectives: The aim of the present work is the valorization of squid pens through the production of chitosan that can be used for the development of biomedical applications. The present work is focused on !-chitin extraction from squid pens of the species Dosidicus gigas and its further conversion into chitosan. The biomedical potential of the isolated squid chitosan was assessed by processing this polymer as scaffolds for tissue engineering strategies. Methods: Alkali solut...

  19. New information from fish diets on the importance of glassy flying squid (Hyaloteuthis pelagica) (Teuthoidea: Ommastrephidae) in the epipelagic cephalopod community of the tropical Atlantic Ocean

    OpenAIRE

    Cherel, Yves; Sabatié, Richard; Potier, Michel; Marsac, Francis; Ménard, Frédéric

    2007-01-01

    Squids of the family Ommastrephidae are a vital part of marine food webs and support major fisheries around the world. They are widely distributed in the open ocean, where they are among the most abundant in number and biomass of nektonic epipelagic organisms. In turn, seven of the 11 genera of this family (Dosidicus, Illex, Martialia, Nototodarus, Ommastrephes, Sthenoteuthis, and Todarodes) are heavily preyed upon by top marine predators, i.e., birds, mammals, and fish, and currently supp...

  20. Características produtivas e qualitativas de cultivares de alho Productive and qualitative characteristics of garlic cultivars

    Directory of Open Access Journals (Sweden)

    Geraldo M. de Resende

    2003-12-01

    Full Text Available Cultivares de alho foram avaliadas quanto à produtividade e características industriais em ensaio na EPAMIG, de maio a outubro/95. O delineamento experimental foi de blocos ao acaso com quatro repetições e sete tratamentos, constituídos das cultivares Dourado de Castro, Chinesão, Gigante de Curitibanos, Gigante de Lavínia, Amarante, Cará e Gigante Roxo com parcelas de 3,68 m² de área útil. A produtividade de bulbos comerciais variou de 7,37 a 14,72 t/ha, destacando-se as cultivares Gigante Curitibanos (14,72 t/ha e Dourado de Castro (14,29 t/ha que não mostraram diferenças significativas entre si, seguidas das demais cultivares com produtividades superiores a 7,00 t/ha. Observaram-se variações de 18,00 (Amarante a 59,25 g/bulbo (Gigante Roxo e 8,20 (Chinesão a 33,78 bulbilhos/bulbo (Dourado de Castro. Não se observaram diferenças significativas entre as diversas cultivares avaliadas para sólidos totais e solúveis, com valores superiores a 36,95 e 36,00%, tendo todas apresentado boas características para a industrialização.Field trials were conducted at EPAMIG, Lavras, Brazil, from May to October/95, to indicate productive garlic cultivars with industrialization characteristics. The experimental design was of randomized complete blocks with four repetitions and seven treatments: Dourado de Castro, Chinesão, Gigante de Curitibanos, Gigante de Lavínia, Amarante, Cará and Gigante Roxo. The commercial bulb yield varied from 7.37 to 14.72 t/ha, the most productive ones being the Gigante Curitibanos (14.72 t/ha and Dourado de Castro (14.29 t/ha, with no significant difference, followed by cultivars presenting yield over 7.00 t/ha. A variation occurred from 18.00 (Amarante to 59.25 g/bulb (Gigante Roxo and from 8.20 (Chinesão to 33.78 cloves/bulb (Dourado de Castro. Cultivars presented no significant differences for total and soluble solids, with values over 36.95 and 36.00%, respectively, besides presenting good

  1. Características agronômicas de cultivares de alho em Diamantina Agronomic characteristics of garlic cultivars in Diamantina, Brazil

    Directory of Open Access Journals (Sweden)

    Fábio Luiz de Oliveira

    2010-09-01

    Full Text Available Um estudo foi realizado, durante o período da safra 2007, com objetivo de avaliar as características agronômicas período de emergência das plântulas, altura de plantas, diâmetro de bulbos frescos e curados, números de bulbilhos por bulbo e produtividade comercial de quatorze cultivares de alho em Diamantina-MG. O delineamento experimental adotado foi de blocos casualizados, com quatro repetições, cujos tratamentos foram as cultivares de alho Gigante do Núcleo, Gigante de Lavínia, Gigante Roxo, Gigante Roxão, Chinês Real, Chinês São Joaquim, Cateto Roxo, Cateto Roxo (livre de vírus, Hozan, Amarante, Peruano, Caturra, Gravatá e Amarante Gouveia. As cultivares Hozan, Gigante de Lavínia, Chinês Real e Peruano apresentaram melhor desenvolvimento vegetativo inicial, com maiores valores em altura de plantas, até os 60 dias. Com relação ao número de bulbilhos/bulbo destacaram-se as cultivares Gratavá (16,5, Cateto Roxo PfLv (15,75, Cateto Roxo (15,25 e Chinês Real (15,25, diferindo das demais. A 'Gigante de Lavínia' destacou-se com a maior produtividade comercial (12,61 t ha-1, seguida pelas cultivares Gravatá (10,87 t ha-1, Chinês Real (10,65 t ha-1, Cateto Roxo Pf Lv (10,63 t ha-1 e Caturra (9,68 t ha-1. A Amarante Gouveia, a cultivada na região, apresentou produtividade de 7,50 t ha-1, valor inferior à média nacional (8,47 t ha-1.A study was carried out in Diamantina, Minas Gerais State, Brazil, during the 2007 season, to evaluate the agronomic characteristics of garlic cultivars. The experimental design was of randomized blocks, with four replications. Treatments were garlic cultivars 'Gigante do Núcleo', 'Gigante de Lavínia', 'Gigante Roxo', 'Gigante Roxão', 'Chinês Real', 'Chinês São Joaquim', 'Cateto Roxo', 'Cateto Roxo PfLv' (free of virus, 'Hozan', 'Amarante', 'Peruano', 'Caturra', 'Gravatá' and 'Amarante Gouveia'. 'Hozan', 'Gigante de Lavínia', 'Chinês Real' and 'Peruano' presented the best vegetative

  2. Aplicación de inteligencia artificial en sistemas automatizados de producción

    OpenAIRE

    Llata García, José Ramón; González Sarabia, Esther; Fernández Pérez, Dámaso; Arce Hernando, Jesús Antonio; Pérez Oria, Juan María

    2000-01-01

    “Soy un gigante tan gigante que puedo grabar una rosa en la uña de un niño recién nacido”. Para solucionar el problema el personaje de García Lorca puede emplear diferentes métodos o múltiples paradigmas, como haría un sistema de inteligencia artificial. La inteligencia artificial es “simplemente” la transferencia de la inteligencia a las máquinas, es decir que el computador haga cosas inteligentes. Sin embargo la inteligencia humana es una función tan compleja que los científicos están solo ...

  3. The spectroscopic orbit of cygni, a system with two Late-type giants

    Directory of Open Access Journals (Sweden)

    Francis C. Fekel

    2004-01-01

    Full Text Available Se han determinado elementos orbitales mejorados para Cygni, mediante 47 nuevas observaciones espectrosc opicas. El per odo es 434.14 d as y la excentricidad 0.559. Con las masas m nimas y la inclinaci on de la orbita visual obtenemos masas de 2.16 y 2.06 M para las dos gigantes. La peque~na diferencia de magnitudes (0.25 mag y el cociente de masas (1.044 indican que ambas gigantes se encuentran en la fase evolutiva del quemado del helio.

  4. Synergistic effects of climate-related variables suggest future physiological impairment in a top oceanic predator

    OpenAIRE

    Rosa, Rui; Seibel, Brad A.

    2008-01-01

    By the end of this century, anthropogenic carbon dioxide (CO2) emissions are expected to decrease the surface ocean pH by as much as 0.3 unit. At the same time, the ocean is expected to warm with an associated expansion of the oxygen minimum layer (OML). Thus, there is a growing demand to understand the response of the marine biota to these global changes. We show that ocean acidification will substantially depress metabolic rates (31%) and activity levels (45%) in the jumbo squid, Dosidicus ...

  5. Feeding of blue marlin Makaira nigricans off Mazatlan, Sinaloa, Mexico Alimentación del marlin azul Makaira nigricans del área de Mazatlán, Sinaloa, México

    OpenAIRE

    Leonardo Abitia-Cárdenas; Dana Arizmendi-Rodríguez; Napoleón Gudiño-González; Felipe Galván-Magaña

    2010-01-01

    We analyzed the stomach contents of 52 blue marlins caught between October 2002 and October 2004 by the sport-fishing fleet of Mazatlan, Sinaloa, in the gulf of California, Mexico. Blue marlin feed on 15 food items. According to the index of relative importance (IRI), the most important prey were the frigate or bullet mackerel Auxis spp. (52%) and jumbo squid Dosidicus gigas (30%).Se analiza el contenido estomacal de 52 marlines azules capturados por la flota de pesca deportiva que operó en e...

  6. Evaluación de recursos pelágicos pequeños al este de las Islas Galápagos durante abril de 1995

    OpenAIRE

    Vicuña, H.; Chalén, X.

    1995-01-01

    The document presents results from the pelagic acoustic research survey, executed at the East zone of the Galápagos Islands, between April and May 1995. A total of ca., 15 500 km² was covered. The following species were identified in the catch: mackarel (Scomber japonicus), south sardine (Sardinops sagax), mictophids (Lampanyctus spp.), and small specimens of giant squid (Dosidicus gigas). Mean legth and weight for mackarel and south sardine were 26,3 cm FL/0,251 kg and 18,6 cm TL/0,051 kg re...

  7. Cefalópodos de la costa pacífica mexicana: aspectos biológicos de las especies más abundantes

    OpenAIRE

    Sánchez, Pilar

    2003-01-01

    [ES] Se analizó la fauna de cefalópodos que se recogió en seis campañas oceanográficas realizadas en las costas mexicanas del Océano Pacífico nororiental entre marzo de 1990 y junio de 1992. Se encontraron un total de 11 especies de cefalópodos a profundidades entre 16 y 828 m. Todos los cefalópodos se conservaron a bordo y se identificaron en el laboratorio. Se analizaron los datos de frecuencia de tallas y distribución talla-peso de las especies más abundantes (Dosidicus gigas, Lolligunc...

  8. Development of edible and active film coatings from marine products : desarrollo de recubrimientos activos comestibles a partir de productos del mar

    OpenAIRE

    Blanco Pascual, Nuria

    2013-01-01

    Se desarrollaron películas activas y comestibles de proteínas y polisacáridos, a partir de recursos de origen marino, tales como los desechos del procesado industrial de cefalópodos (Dosidicus gigas) y las algas infrautilizadas (Mastocarpus stellatus, Laminaria digitata y Ascophyllum nodosum). Con este fin, se valorizaron los materiales poliméricos y extractos potencialmente bioactivos recuperados para el desarrollo de películas antioxidantes y su caracterización físico-química; y se microenc...

  9. Hábitos alimentarios del tiburón martillo Sphyrna lewini (Griffith & Smith, 1834) (Chondrichthyes) en el Pacífico ecuatoriano

    OpenAIRE

    Colombo Estupiñán-Montaño; Luis G Cedeño-Figueroa; Felipe Galván-Magaña

    2009-01-01

    Este estudio analizó la dieta de 116 ejemplares del tiburón martillo Sphyrna lewini capturados por la flota tiburonera que pesca en el Pacífico ecuatoriano. Las muestras se recolectaron de enero a diciembre de 2004. De acuerdo al índice de importancia relativa, los cefalópodos Histioteuthis spp. (22,7%) y Dosidicus gigas (21,9%) fueron las presas principales. Con respecto al sexo y estado de madurez, las hembras juveniles consumieron principalmente D. gigas (58,5%); mientras que las adultas c...

  10. Sodium influxes in internally perfused squid giant axon during voltage clamp.

    Science.gov (United States)

    Atwater, I; Bezanilla, F; Rojas, E

    1969-05-01

    1. An experimental method for measuring ionic influxes during voltage clamp in the giant axon of Dosidicus is described; the technique combines intracellular perfusion with a method for controlling membrane potential.2. Sodium influx determinations were carried out while applying rectangular pulses of membrane depolarization. The ratio ;measured sodium influx/computed ionic flux during the early current' is 0.92 +/- 0.12.3. Plots of measured sodium influx and computed ionic flux during the early current against membrane potential are very similar. There was evidence that the membrane potential at which the sodium influx vanishes is the potential at which the early current reverses. PMID:5767887

  11. Description of an injury in a human caused by a false tocandira (Dinoponera gigantea, Perty, 1833 with a revision on folkloric, pharmacological and clinical aspects of the giant ants of the genera Paraponera and Dinoponera (sub-family Ponerinae Descrição de injúria humana causada por falsa tocandira (Dinoponera gigantea, Perty, 1833 com revisão dos aspectos folclóricos, farmacológicos e clínicos das formigas gigantes do gênero Paraponera e Dinoponera (sub-família Ponerinae

    Directory of Open Access Journals (Sweden)

    Vidal Haddad Junior

    2005-08-01

    Full Text Available The authors observed an injury caused by the sting of a false tocandira ant in the hand of an amateur fisherman and they describe the clinical findings and the evolution of the envenoming, which presented an acute and violent pain, cold sweating, nausea, a vomiting episode, malaise, tachycardia and left axillary's lymphadenopathy. About three hours after the accident, still feeling intense pain in the place of the sting, he presented an episode of great amount of blood in the feces with no history of digestive, hematological or vascular problems. The intense pain decreased after eight hours, but the place stayed moderately painful for about 24 hours. In that moment, he presented small grade of local edema and erythema. The authors still present the folkloric, pharmacological and clinical aspects related to the tocandiras stings, a very interesting family of ants, which presents the largest and more venomous ants of the world.A partir de um acidente causado pela picada de uma formiga falsa tocandira na mão de um pescador amador, os autores descrevem os achados clínicos locais observados, tais como edema, eritema e dor excruciante e a evolução do envenenamento, que cursou com fenômenos sistêmicos imediatos, como sudorese fria, náuseas, vômitos, mal estar, taquicardia e linfadenopatia axilar à esquerda. Após três horas, a dor intensa persistia e o paciente apresentou um episódio de hematoquesia, sem história anterior de enfermidades do trato digestivo, hematológicas ou vasculares. O uso de analgésicos (Tramal® 300 mg/dia, água quente e gelo não melhorou a dor, que arrefeceu em oito horas, tendo permanecido por cerca de 24 horas. São apresentados ainda os aspectos folclóricos, farmacológicos e clínicos relacionados às picadas de tocandiras.

  12. Description of an injury in a human caused by a false tocandira (Dinoponera gigantea, Perty, 1833) with a revision on folkloric, pharmacological and clinical aspects of the giant ants of the genera Paraponera and Dinoponera (sub-family Ponerinae) Descrição de injúria humana causada por falsa tocandira (Dinoponera gigantea, Perty, 1833) com revisão dos aspectos folclóricos, farmacológicos e clínicos das formigas gigantes do gênero Paraponera e Dinoponera (sub-família Ponerinae)

    OpenAIRE

    Vidal Haddad Junior; João Luiz Costa Cardoso; Roberto Henrique Pinto Moraes

    2005-01-01

    The authors observed an injury caused by the sting of a false tocandira ant in the hand of an amateur fisherman and they describe the clinical findings and the evolution of the envenoming, which presented an acute and violent pain, cold sweating, nausea, a vomiting episode, malaise, tachycardia and left axillary's lymphadenopathy. About three hours after the accident, still feeling intense pain in the place of the sting, he presented an episode of great amount of blood in the feces with no hi...

  13. On certain Tortoises in the collections of the Leyden Museum

    NARCIS (Netherlands)

    Hubrecht, A.A.W.

    1881-01-01

    Günther’s splendid monograph on the gigantic landtortoises, which appeared a few years ago, induced me to compare the specimens belonging to this group, which form part of the Leyden collections. Among these is the original specimen of Testudo indica vosmaeri Schoepff as it was first described and f

  14. The Toshka mirage in the Egyptian desert - river diversion as political diversion

    NARCIS (Netherlands)

    Warner, J.F.

    2013-01-01

    Egypt's geography renders it vulnerable to water scarcity, but also enables it to control its inflow. After a run of high influx years from the Nile, Egypt embarked on a project to utilise the surplus water by planning a gigantic desert development project, Toshka, in the late 1990s. The present con

  15. Coral Reefs: A Gallery Program, Grades 7-12.

    Science.gov (United States)

    National Aquarium in Baltimore, MD. Dept. of Education.

    Gallery classes at the National Aquarium in Baltimore give the opportunity to study specific aquarium exhibits which demonstrate entire natural habitats. The coral reef gallery class features the gigantic western Atlantic coral reef (325,000 gallons) with over 1,000 fish. The exhibit simulates a typical Caribbean coral reef and nearby sandy…

  16. On abnormal pectoral shields in Testudo ephippium Gthr

    NARCIS (Netherlands)

    Lidth de Jeude, van Th.W.

    1898-01-01

    In the beginning of this year our herpetological collection was enriched with a specimen of the gigantic landtortoises from the Galapagos-islands. The specimen, a male one, directly struck me by the peculiar arrangement of the pectoral shields, which have a triangular form, and do not meet in the mi

  17. The Skyscraper Index: A Foreshadowing of Economic Crisis

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    For politicians and the public at large, skyscrapers -- gigantic buildings backed by huge economic power -- are a symbol of social progress and economic prosperity. Contrary to this popular belief, some economists argue that the emergence of skyscrapers and those reaching new heights in particular, would more often than not precede economic downturns.

  18. A Supermagnetic Tunnel Full of Subatomic Action

    CERN Multimedia

    2008-01-01

    Last year, before the gigantic hadron supercollider at CERN research facility was installed underground, a photographer captured this picture of a 1,950 metric ton tunnel containing giant magnets that will be placed in a tunnel and kept at near-zero temperatures.

  19. CERN celebrates another milestone

    CERN Multimedia

    2007-01-01

    "CERN (the European Organization for Nuclear Research) recently celebrated the lowering of the gigantic toroid magnet end-cap, using an EOT crane, onto the cavern floor. After a two-hour operation, the installation teams from ATLAS, PH-ATI and TS could finally breath a sigh of relief." (1/2 page)

  20. Influência de épocas de plantio e cultivares no rendimento total da cultura do alho (Allium sativum l. em Santa Maria, RS Planting date and cultivar influence on the total yield of garlic (Allium sativum L. in Santa Maria, RS

    Directory of Open Access Journals (Sweden)

    Jorge Nadir Trevisan

    1996-04-01

    Full Text Available O experimento foi conduzido na Universidade Federal de Santa Maria, RS, no ano agrícola de 1984, afim de avaliar a influência de três épocas de plantio (27 de abril, 18 de maio e 14 de julho na produção total de bulbos de nove cultivares de alho (Allium sativum L.. Utilizou-se o delineamento de blocos ao acaso com parcelas subdivididas, com quatro repetições. Os maiores rendimentos totais de bulbos foram obtidos no plantio de 18 de maio. Gigante Lavínia foi a cultivar mais produtiva. As cultivares São Lourenço e Gigante Inconfidentes destacaram-se pelos rendimentos, os quais não diferiram significativamente entre si.The experiment was carried out at the Federal University of Santa Maria, in southernmost Brazil, during the growing season of 1984, to determine the influence of three different planting dates (April 27, May 18 and July 14 on the yield of nine garlic, Allium sativum Z., cultivars. The experimental design was a split plot complete block, with planting dates as main plots and cultivars as subplots. Blocks were replicated four times. The highest yields were obtained with planting date May 18. Gigante Lavínia ranked first among cultivars. The outstanding performances of São Lourenço and Gigante Inconfidentes were not significantly different.

  1. Paratethyan ostracods in the Spanish Lago-Mare : More evidence for interbasinal exchange at high Mediterranean sea level

    NARCIS (Netherlands)

    Stoica, Marius; Krijgsman, Wout; Fortuin, Anne; Gliozzi, Elsa

    2016-01-01

    A gigantic cascade of Atlantic waters, filling the deep desiccated Mediterranean basin at the beginning of the Pliocene, has commonly been envisaged to end the Messinian Salinity Crisis (MSC). The Mediterranean lowstand during its final "Lago-Mare" phase, however, has long been subject to major cont

  2. Fermilab Physicists don't see higgs, argue they should keep looking

    CERN Multimedia

    Cho, Adrian

    2010-01-01

    "This year's International Conference on High Energy Physics was a case study in irony. The meeting was billed as the coming-out party for the Large Hadron Collider (LHC), the gigantic European atom smasher that started taking data in March, but the buzz surrounded results form the older Tevatron collider at Fermi National Accelerator Laboratory (Fermilab) in Batavia, Illinois." (1 page)

  3. Energy and charge control in mass spectrometry of synthetic polymers

    NARCIS (Netherlands)

    Nasioudis, A.

    2011-01-01

    Synthetic polymers are the products of humans’ attempts to imitate nature’s gigantic molecular chain architectures. The extended variety of building blocks and reaction mechanisms resulted in a plethora of different polymeric architectures. The biggest challenge for polymer chemists is to develop an

  4. Gender, Education and Child Labour: A Sociological Perspective

    Science.gov (United States)

    Bhat, Bilal Ahmad

    2010-01-01

    In all societies, boys and girls are assigned different societal roles and experience different perspectives of life as a result of their being male or female. Such differences have a gigantic impact on their lives. The importance of gender perspective is very important in understanding the convolution of child labour. Gender, as opposed to sex,…

  5. Boson-fermion stars exploring different configurations

    CERN Document Server

    Henriques, A B; Henriques, Alfredo B.; Mendes, Luis E.

    2003-01-01

    We use the flexibility of the concept of a fermion-boson star to explore different configurations, ranging from objects of atomic size and masses of the order $10^{18}$ g, up to objects of galactic masses and gigantic halos around a smaller core, with possible interesting applications to astrophysics and cosmology, particularly in the context of dark matter.

  6. Spectroscopy of blue and yellow long-period variables in the small magellanic cloud

    Directory of Open Access Journals (Sweden)

    R. E. Mennickent

    2006-01-01

    Full Text Available Presentamos espectroscop a de 17 estrellas variables brillantes posibles miembros de la Nube Peque~na de Magallanes. Estas estrellas son variables OGLE cuya periodicidad fotom etrica no ha sido explicada. Hemos determinado tipos espectrales y velocidades radiales para estas estrellas. La mayor a resultaron ser objetos con l neas Balmer en emisi on, gigantes o supergigantes, de tipos espectrales B...

  7. The Southern Ocean deep sea: first insights into biodiversity and biogeography

    DEFF Research Database (Denmark)

    Brandt, A.; Brix, S.; Brökeland, W.; Cedhagen, Tomas; Choudhury, M.; Cornelius, N.; Danis, B.; De Mesel, I.; Diaz, R.J.; Gillan, D.C.; Ebbe, B.; Howe, J.; Janussen, D.; Kaiser, S.; Linse, K.; Malyutina, M.; Brandao, S.N.; Pawlowski, J.; Raupach, M.; Vanreuse, A.; Gooday, A.J.

    2007-01-01

    Shallow marine benthic communities around Antarctica show high levels of endemism, gigantism, slow growth, longevity and late maturity, as well as adaptive radiations that have generated considerable biodiversity in some taxa1. The deeper parts of the Southern Ocean exhibit some unique environmen...

  8. Rock "n" Roll Presidents on Mount Rushmore. Second Grade Activity. Schools of California Online Resources for Education (SCORE): Connecting California's Classrooms to the World.

    Science.gov (United States)

    Sawyer, Debbie

    A historian, Doane Robinson, and a sculptor, Gutzon Borglum, worked together to build a gigantic monument in South Dakota that honored four of the greatest U.S. presidents: George Washington, Abraham Lincoln, Theodore Roosevelt, and Thomas Jefferson. Robinson and Borglum wanted the monument to represent U.S. ideals. To celebrate the anniversary of…

  9. Search engines: seek and ye shall find? The position of search engines in law

    NARCIS (Netherlands)

    N. van Eijk

    2006-01-01

    In the electronic world, the ways of receiving and imparting information have changed beyond all recognition because of the ease in sharing information over the Internet. We can scarcely begin to conceive the gigantic amount of information put there at our disposal by private and public suppliers. I

  10. Europe joins the race to turn the Internet into one vast computer

    CERN Multimedia

    Butler, D

    2000-01-01

    CERN is coordinating an European proposal to design internet and software protocols to turn the internet into a single gigantic computer - a 'grid'. The impetus has come from the challenges surrounding the analysis of the vast amounts of data which will be generated by the LHC (1 page).

  11. Beckwith-Wiedemann syndrome and bilateral adrenal pheochromocytoma: sonography and MRI findings

    Energy Technology Data Exchange (ETDEWEB)

    Baldisserotto, Matteo; Peletti, Adriana Barcellos; Araujo, Manoel Angelo de; Pertence, Ana Paula Cardoso; Dora, Marcelo Dourado; Maciel, Elines Oliva; Gaiger, Ana Maria [Hospital da Crianca Conceicao, Departamento de Radiologia, Porto Alegre, RS (Brazil)

    2005-11-01

    Beckwith-Wiedemann syndrome is characterized by a group of clinical abnormalities, the most frequent of which are omphalocele, macroglossia, gigantism, neonatal hypoglycemia and umbilical hernia. The association of this syndrome with malignant tumors is well documented. We report a child with this syndrome associated with bilateral adrenal pheochromocytoma. (orig.)

  12. Giga-apparaat jaagt op mini deeltje

    CERN Multimedia

    Posthumus, Elly

    2006-01-01

    The unknown and vigorous collisions between the cores of particles produce new information about the birth of the universe. With gigantic detectors, the physicists of the CERN inquire about the unknown particles which come from the time of the big-bang. (2 pages)

  13. The use of artificial neural network modeling to represent the process of concentration by molecular distillation of omega-3 from squid oil

    Directory of Open Access Journals (Sweden)

    Rossi, P.

    2014-12-01

    Full Text Available The concentration of omega-3 compounds obtained for the esterification of squid oil by molecular distillation was carried out in two stages. This operation can process these thermolabile and high molecular weight components at very low temperatures. Given the mathematical complexity of the theoretical model, artificial neural networks (ANN have provided an alternative to a classical computing analysis. The objective of this study was to create a predictive model using artificial neural network techniques to represent the concentration process of omega-3 compounds obtained from squid oil using molecular distillation. Another objective of this study was to analyze the performance of two different alternatives of ANN modeling; one of them is a model that represents all variables in the process and the other is a global model that simulates only the input and output variables of the process. The alternative of the ANN global model showed the best fit to the experimental data.La concentración de compuestos omega-3, obtenidos de la esterificación de aceite de calamar, por destilación molecular fue llevada a cabo en dos etapas. Esta operación permite procesar componentes termolábiles y de alto peso molecular a muy bajas temperaturas. Dada la alta complejidad de los modelos teóricos, las redes neuronales artificiales (RNA conforman una alternativa al análisis computacional clásico. El objetivo de este estudio fue crear un modelo predictivo usando modelos de redes neuronales artificiales para representar el proceso de concentración de compuestos omega-3 obtenidos del aceite de calamar por destilación molecular. Otro objetivo de este estudio fue analizar el desenvolvimiento de dos alternativas de modelos RNA; uno de ellos es un modelo que representa todas las variables en el proceso y otro es un modelo global que simula solo las variables de entrada y de salida del proceso. La alternativa de un modelo RNA global mostró el mejor ajuste de los

  14. Revealing the potential of squid chitosan-based structures for biomedical applications.

    Science.gov (United States)

    Reys, L L; Silva, S S; Oliveira, J M; Caridade, S G; Mano, J F; Silva, T H; Reis, R L

    2013-08-01

    In recent years, much attention has been given to different marine organisms, namely as potential sources of valuable materials with a vast range of properties and characteristics. In this work, β-chitin was isolated from the endoskeleton of the giant squid Dosidicus gigas and further deacetylated to produce chitosan. Then, the squid chitosan was processed into membranes and scaffolds using solvent casting and freeze-drying, respectively, to assess their potential biomedical application. The developed membranes have shown to be stiffer and less hydrophobic than those obtained with commercial chitosan. On the other hand, the morphological characterization of the developed scaffolds, by SEM and micro-computed tomography, revealed that the matrices were formed with a lamellar structure. The findings also indicated that the treatment with ethanol prior to neutralization with sodium hydroxide caused the formation of larger pores and loss of some lamellar features. The in vitro cell culture study has shown that all chitosan scaffolds exhibited a non-cytotoxic effect over the mouse fibroblast-like cell line, L929 cells. Thus, chitosan produced from the endoskeletons of the giant squid Dosidicus gigas has proven to be a valuable alternative to existing commercial materials when considering its use as biomaterial. PMID:23715133

  15. Revealing the potential of squid chitosan-based structures for biomedical applications

    International Nuclear Information System (INIS)

    In recent years, much attention has been given to different marine organisms, namely as potential sources of valuable materials with a vast range of properties and characteristics. In this work, β-chitin was isolated from the endoskeleton of the giant squid Dosidicus gigas and further deacetylated to produce chitosan. Then, the squid chitosan was processed into membranes and scaffolds using solvent casting and freeze-drying, respectively, to assess their potential biomedical application. The developed membranes have shown to be stiffer and less hydrophobic than those obtained with commercial chitosan. On the other hand, the morphological characterization of the developed scaffolds, by SEM and micro-computed tomography, revealed that the matrices were formed with a lamellar structure. The findings also indicated that the treatment with ethanol prior to neutralization with sodium hydroxide caused the formation of larger pores and loss of some lamellar features. The in vitro cell culture study has shown that all chitosan scaffolds exhibited a non-cytotoxic effect over the mouse fibroblast-like cell line, L929 cells. Thus, chitosan produced from the endoskeletons of the giant squid Dosidicus gigas has proven to be a valuable alternative to existing commercial materials when considering its use as biomaterial. (paper)

  16. Simultaneous measurements of magnesium, calcium and sodium influxes in perfused squid giant axons under membrane potential control.

    Science.gov (United States)

    Rojas, E; Taylor, R E

    1975-10-01

    1. Giant axons from the squids Dosidicus gigas, Loligo forbesi and Loligo vulgaris were internally perfused with 550 or 275 mM KF plus sucrose and bathed in artificial sea water containing 45Ca, 28Mg or mixtures of 45Ca-28Mg or 45Ca-22Na. Resting influxes and extra influxes during voltage-clamp pulses were measured by collecting and counting the internal perfusate. 2. For Dosidicus axons in 10 mM-CaCl2 the resting influx of calcium was 0-016 +/- 0-007 p-mole/cm2 sec and a linear function of external concentration. For two experiments in 10 and 84-7 mM-CaCl2, 100 nM tetrodotoxin had no effect. Resting calcium influx in 10 mM-CaCl2 was 0-017 +/- 0-013 p-mole/cm2 sec for Loligo axons. 3. With 55 mM-MgCl2 outside the average resting magnesium influx was 0-124 +/- 0-080 p-mole/cm2 sec for Loligo axons. Discarding one aberrant point the value is 0-105 +/- 0-046 which is not significantly different from the resting calcium influx for Dosidicus fibres in 55 mM-CaCl2, given as 0-094 p-mole/cm2 sec by the regression line shown in Fig. 1. In two experiments 150 nM tetrodotoxin had no effect. 4. With 430 mM-NaCl outside 100 nM tetrodotoxin reduced the average resting influx of sodium in Dosidicus axon from 27-7 +/- 4-5 to 25-1 +/- 6-2 p-mole/cm2 sec and for Loligo fibres in 460 mM-NaCl from 50-5 +/- 4 to 20 +/- 8 p-mole/cm2 sec. 5. Using depolarizing pulses of various durations, the extra calcium influx occurred in two phases. The early phase was eliminated by external application of tetrodotoxin. The results of analysis are consistent with, but do not rigorously demonstrate, the conclusion that the tetrodotoxin sensitive calcium entry is flowing through the normal sodium channels (cf. Baker, Hodgkin & Ridgway, 1971). 6. Measurements of extra influxes using 22Na and 45Ca simultaneously indicate that the time courses of tetrodotoxin sensitive calcium and sodium entry are similar but not necessarily identical. It is very doubtful that any significant calcium entry occurs before

  17. Dieta del lobo marino de California, Zalophus californianus Lesson, 1828, en la Isla San Jorge, en el norte del Golfo de California, México, 1998–1999

    Directory of Open Access Journals (Sweden)

    2005-01-01

    Full Text Available El lobo marino de California, Zalophus californianus (Lesson, 1828, es el único pinnípedo residente en el Golfo de California, donde sus mayores poblaciones están en el cinturón de las Grandes Islas y en el norte del golfo. La Isla San Jorge, en el golfo norte, tiene la segunda colonia reproductiva, que también es genéticamente diferente de otras colonias del Golfo (Schramm-Urrutia, 2002. Se estudió la dieta de los lobos marinos de esta isla por medio del análisis de excretas, entre febrero de 1998 y marzo de 1999. El componente más importante de la dieta fue Porichthys sp. (principalmente P. analis Hubbs y Schultz, 1939, seguido de Pomadasys panamensis (Steindachner, 1875 y el calamar Lolliguncula panamensis Berry, 1911. Aparentemente, los lobos forrajearon principalmente en el fondo del mar. Las presas consumidas por los lobos marinos en la Isla San Jorge no son de valor comercial. Hubo poco traslapo en las dietas entre los lobos marinos y el bobo café, Sula leucogaster (Boddaert, 1783, el ave ictiófaga mas abundante en la isla.

  18. Interacciones de pesquerías ribereñas en Bahía Magdalena-Almejas, Baja California Sur

    Directory of Open Access Journals (Sweden)

    Miguel A. Ojeda Ruiz de la Peña

    2012-01-01

    Full Text Available Con el fin de aportar al desarrollo de un modelo conceptual sobre la pesca ribereña o artesanal en el área de Bahía Magdalena-Almejas, Baja California Sur, se jerarquizó la importancia de 14 pesquerías de la región. La calificación se basó en un análisis cualitativo por puntos y en la estimación de un índice de importancia relativa, con indicadores como los promedios de captura, valor y frecuencia de registro de especies objetivo en desembarcos de embarcaciones menores, de 1998 a 2009; entre ellas están: almeja catarina, escama, camarón, callo de hacha, tiburón, jaiba, calamar, almeja pata de mula, rayas, lisa, pulpo, abulón, langosta y caracol chino. La interacción temporal entre varias de ellas es controlada por vedas oficiales, pero cuando ocurre se reconocen posibles efectos por pesca incidental e ilegal y modificaciones al ecosistema.

  19. Freshwater discharge into the Caribbean Sea from the rivers of Northwestern South America (Colombia): Magnitude, variability and recent changes

    Science.gov (United States)

    Restrepo, Juan Camilo; Ortíz, Juan Carlos; Pierini, Jorge; Schrottke, Kerstin; Maza, Mauro; Otero, Luís; Aguirre, Julián

    2014-02-01

    The monthly averaged freshwater discharge data from ten rivers in northern Colombia (Caribbean alluvial plain) draining into the Caribbean Sea were analysed to quantify the magnitudes, to estimate long-term trends, and to evaluate the variability of discharge patterns. These rivers deliver ∼340.9 km3 yr-1 of freshwater to the Caribbean Sea. The largest freshwater supply is provided by the Magdalena River, with a mean discharge of 205.1 km3 yr-1 at Calamar, which is 26% of the total fluvial discharge into this basin. From 2000 to 2010, the annual streamflow of these rivers increased as high as 65%, and upward trends in statistical significance were found for the Mulatos, Canal del Dique, Magdalena, and Fundación Rivers. The concurrence of major oscillation processes and the maximum power of the 3-7 year band fluctuation defined a period of intense hydrological activity from approximately 1998-2002. The wavelet spectrum highlighted a change in the variability patterns of fluvial systems between 2000 and 2010 characterised by a shift towards a quasi-decadal process (8-12 years) domain. The Intertropical Convergence Zone (ITCZ), El Niño - Southern Oscillation (ENSO) events, and quasi-decadal climate processes are the main factors controlling the fluvial discharge variability of these fluvial systems.

  20. Determinação do ponto de colheita na produção de alho Determination of the harvest date for garlic cultivars

    Directory of Open Access Journals (Sweden)

    Carlos Manoel de Oliveira

    2003-09-01

    Full Text Available O ponto de colheita de cultivares de alho tropical foi obtido através de um experimento conduzido na UFLA (MG, no delineamento de blocos casualizados, em esquema fatorial 4 x 5, com quatro repetições, avaliando quatro cultivares (Gigante Curitibanos, Gravatá, Gigante Lavínia e Gigante Roxo e cinco épocas de colheita (134, 141, 148, 155 e 162 dias após o plantio. Avaliou-se a produtividade total de plantas, produtividade total de bulbos e características físico-químicas (teor de sólidos solúveis, acidez titulável e índice de pH. Os resultados obtidos permitiram verificar que as épocas de colheita influenciaram significativamente a produção e as características físico-químicas. A máxima produtividade foi obtida aos 148 e 156 dias após plantio, períodos em que se observou também aumento nas concentrações de sólidos solúveis e ácidos orgânicos no suco do alho.The harvest point for tropical garlic cultivars was determined through an experiment carried out in the Universidade Federal de Lavras, Brazil, with randomized block design, in a 4 x 5 factorial scheme, four replications, testing four cultivars: Gigante Curitibanos, Gravatá, Gigante Lavínia and Gigante Roxo and five harvesting dates: 134, 141, 148, 155 and 162 days after planting. The total yield of plant, total yield of garlic bulbs and physical-chemical characteristics (soluble acids content, titrable acidity and pH indices were determined. The harvest date influenced significantly the yield and physical-chemical characteristics: Maximum yield, soluble solids concentration, and organic acids in garlic juice were obtained when harvesting at 148 and 156 days after planting date.

  1. Diversidade genética de cultivares de alho (Allium sativum L. por meio de marcador molecular rapd Genetic diversity of the cultivars of garlic (Allium sativum L. for molecular marker rapd

    Directory of Open Access Journals (Sweden)

    José Hortêncio Mota

    2004-08-01

    Full Text Available Realizou-se este estudo com o objetivo de determinar a diversidade genética entre doze cultivares de alho, por meio de marcadores moleculares RAPD. Foram utilizados seis cultivares nobres e seis cultivares seminobres. A análise de agrupamento das similaridades genéticas foi realizada pelo método UPGMA, gerando um dendrograma utilizando o índice de Jaccard. Houve a formação de dois grupos, sendo o primeiro grupo formado pelas cultivares nobres (Roxo Pérola de Caçador, Chonan, Contestado 12, Caçador 30, Caçador 40 e Quitéria 595, ou seja, cultivares que precisam de vernalização para a formação do bulbo, e um segundo formado pelas cultivares seminobres (Gigante Curitibanos, Gigante Roxo, Gigante Roxão, Gravatá, Amarante e Cateto Roxo ou que não precisam de vernalização para a formação do bulbo. As cultivares nobres e seminobres apresentaram 57,1% e 54,2% de similaridade, respectivamente. Pelos resultados, pode-se concluir que o marcador molecular RAPD foi eficiente em separar dois grupos de cultivares de Allium sativum.The objective of this study was to determine the genetic diversity among twelve garlic cultivars, with RAPD molecular marker. Six cultivars noble and six cultivars half-noble were tested. The analysis of grouping by genetic similarities was carried out by the method of UPGMA with generated a dendrogram using the Jaccard index. Have the formation of two groups, being the first group formed by the cultivars noble (Roxo Pérola de Caçador, Chonan, Contestado 12, Caçador 30, Caçador 40 and Quitéria 595 those that need vernalization for the formation of the bulb and a second group formed by the cultivars half-noble (Gigante Curitibanos, Gigante Roxo, Gigante Roxão, Gravatá, Amarante and Cateto Roxo which do not need vernalization for formation of the bulb. The cultivars noble and half-noble presented 57,1% and 54,2% of similarity, respectively. The results allowed to conclued that RAPD molecular marker were

  2. Dicty_cDB: Contig-U11739-1 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available kknr rkvekekeekeilerrnklkdqnlnstttnsttttttsksslsemaqnikrkaeeqknke nskkfkk*knnnkilh*kkikk*k*kn Translate... Lambda K H 1.37 0.711 1.31 Matrix: blastn matrix:1 -3 Gap Penalties: Existence: 5, Extension: 2 Number of H... 6 ( BI067787 ) pgf1n.pk007.l24 normalized chicken fat cDNA libra... 52 6e-04 3 ( FC748641 ) CBBI4044.fwd CBBI Lottia gigante...8e-04 2 ( FC638598 ) CAXU3311.fwd CAXU Lottia gigantea from female gon... 58 8e-04 2 ( FC695592 ) CAXX506.fwd CAXX Lottia gigante...in T4 cDNA library. 58 0.001 1 ( DJ131513 ) Method for identification of useful prote

  3. Comportamento de cinco genótipos de coqueiro (Cocos nucifera L.) na fase de germinação e de crescimento de mudas, sob diferentes sistemas de produção Behavior of five genotypes of coconut tree (Cocos nucifera L.) in the phase of germination and seedling growth, under different systems of production

    OpenAIRE

    WALDIR SEBASTIÃO DE FARIA; HILTON NEY GAÍVA; Walter E Pereira

    2002-01-01

    Com o objetivo de avaliar o comportamento de cinco genótipos de anões e híbridos de coqueiro: anão-verde de Jiqui (AVeJ), anão-vermelho de Gramame (AVG), anão-amarelo da Malásia (AAM), híbrido de anão-vermelho de Gramame x gigante-Brasil-da-praia-do-Forte (AVG x GBrPF) e o híbrido de anão-amarelo de Gramame x gigante do oeste Africano (AAG x GOA), na fase de germinação de sementes e de crescimento de mudas, em diferentes sistemas de produção, foi instalado um experimento em 1º-08-1998, n...

  4. Astrophysical life extinctions what killed the dinosaurs?

    CERN Document Server

    Dar, Arnon

    1999-01-01

    Geological records indicate that the exponential diversification of marine and continental life on Earth in the past 500 My was interrupted by many life extinctions. They also indicate that the major mass extinctions were correlated in time with large meteoritic impacts, gigantic volcanic eruptions, sea regressions and drastic changes in global climate. Some of these catastrophes coincided in time. The astrophysical life extinction mechanisms which were proposed so far, in particular, meteoritic impacts, nearby supernova explosions, passage through molecular or dark matter clouds, and Galactic gamma/cosmic ray bursts cannot explain the time coincidences between these catastrophes. However, recent observations suggest that many planetary-mass objects may be present in the outer solar system between the Kuiper belt and the Oort cloud. Gravitational perturbations may occasionally bring them into the inner solar system. Their passage near Earth could have generated gigantic tidal waves, large volcanic eruptions, ...

  5. On the electric breakdown field of the mesosphere and the influence of electron detachment

    DEFF Research Database (Denmark)

    Neubert, Torsten; Chanrion, Olivier Arnaud

    2013-01-01

    that the threshold field decreases with time and can reach values well below the conventional threshold field. The concept of a fixed threshold field therefore itself breaks down. We find that the growth rate decreases with decreasing electric field and that long exposure time of electric fields therefore is needed......It has been suggested recently that electron associative detachment from negative atomic oxygen ions provides an additional source of free electrons in electric discharges of the mesosphere, the sprites, and gigantic jets. Here we study attachment under some simplifying assumptions and show...... for electron avalanches to grow. Detachment is likely to affect the conductivity of streamer filaments and other long-lasting space charge structures like gigantic jets or the ionization state of the mesosphere when illuminated by thunderstorm fields. Detachment by itself does not directly affect small...

  6. Slow swimming, fast strikes: effects of feeding behavior on scaling of anaerobic metabolism in epipelagic squid.

    Science.gov (United States)

    Trueblood, Lloyd A; Seibel, Brad A

    2014-08-01

    Many pelagic fishes engage prey at high speeds supported by high metabolic rates and anaerobic metabolic capacity. Epipelagic squids are reported to have among the highest metabolic rates in the oceans as a result of demanding foraging strategies and the use of jet propulsion, which is inherently inefficient. This study examined enzymatic proxies of anaerobic metabolism in two species of pelagic squid, Dosidicus gigas and Doryteuthis pealeii (Lesueur 1821), over a size range of six orders of magnitude. We hypothesized that activity of the anaerobically poised enzymes would be high and increase with size as in ecologically similar fishes. In contrast, we demonstrate that anaerobic metabolic capacity in these organisms scales negatively with body mass. We explored several cephalopod-specific traits, such as the use of tentacles to capture prey, body morphology and reduced relative prey size of adult squids, that may create a diminished reliance on anaerobically fueled burst activity during prey capture in large animals. PMID:25079893

  7. Radioimmunoassay of dermorphin-like peptides in mammalian and non-mammalian tissues.

    Science.gov (United States)

    Negri, L; Melchiorri, P; Erspamer, G F; Erspamer, V

    1981-01-01

    A selective RIA for D-Ala2-Dermorphin (Der), a natural peptide extracted from amphibian skin, has been developed using an antibody raised in rabbits against Der which has been coupled to BSA through its phenolic hydroxyl groups of tyrosine residues with 2,4-Dichloro-6-methoxy-1,3,5-triazine. The cross-reactivity of this antibody with dermorphin analogs, C- and N-terminal fragments of dermorphin molecule, some opioid and gastrointestinal peptides was tested. Der-like immunoreactivity has been identified in tissue extracts of rats, frog and cephalopoda. Der-like peptides were purified by passing methanol extracts of the tissues through a Sephadex G25 column (16 x 100 cm) eluted with 0.1 M acetic acid at 4 degrees C. Der-like immunoreactivity from neural tissue of Dosidicus gigas, Eledone moscata, and rat brain showed a good agreement with an authentic sample of synthetic dermorphin. PMID:6979743

  8. Infiltration of chitin by protein coacervates defines the squid beak mechanical gradient.

    Science.gov (United States)

    Tan, YerPeng; Hoon, Shawn; Guerette, Paul A; Wei, Wei; Ghadban, Ali; Hao, Cai; Miserez, Ali; Waite, J Herbert

    2015-07-01

    The beak of the jumbo squid Dosidicus gigas is a fascinating example of how seamlessly nature builds with mechanically mismatched materials. A 200-fold stiffness gradient begins in the hydrated chitin of the soft beak base and gradually increases to maximum stiffness in the dehydrated distal rostrum. Here, we combined RNA-Seq and proteomics to show that the beak contains two protein families. One family consists of chitin-binding proteins (DgCBPs) that physically join chitin chains, whereas the other family comprises highly modular histidine-rich proteins (DgHBPs). We propose that DgHBPs play multiple key roles during beak bioprocessing, first by forming concentrated coacervate solutions that diffuse into the DgCBP-chitin scaffold, and second by inducing crosslinking via an abundant GHG sequence motif. These processes generate spatially controlled desolvation, resulting in the impressive biomechanical gradient. Our findings provide novel molecular-scale strategies for designing functional gradient materials. PMID:26053298

  9. Comparison on trace elements in squid statoliths of different species' origin: as available key for taxonomic and phylogenetic study

    International Nuclear Information System (INIS)

    Trace elements in squid statoliths were analyzed by PIXE for the following fourteen species in five families of different habit origin: Ommastrephidae, Ommastrephes bartrami, Dosidicus gigas, Sthenoteuthis oualaniensis; Gonatidae, Gonatopsis makko, G. borealis, Berryteuthis magister; Loliginidae, Loligo bleekeri, L. duvaucelii, L. chinensis, L. edulis and Sepioteuthis lessoniana; Sepiidae, Sepia aculeata and Sepiella inermis; Sepiolidae, Rossia pacifica. Manganese, iron, copper, zinc and strontium were detected from statoliths of all species examined. Among these trace elements, Sr is the highest in concentration. Variation of statoliths Sr concentration reflects taxonomic position and the habitat of specimens. In Ommastrephids and Gonatids, that have oceanic habitat, statoliths Sr concentration is relatively high whereas that of Loliginids and Sepiids, that have coastal habitat, is comparatively low. This fact supports our previous report on this subject. R pacifica exceptionally shows high statoliths Sr concentration although this species inhabits in coastal water. (author)

  10. Physical-chemical studies of proteins of squid nerve axoplasm, with special reference to the axon fibrous protein.

    Science.gov (United States)

    DAVISON, P F; TAYLOR, E W

    1960-03-01

    The proteins in the axoplasm of the squid, Dosidicus gigas, have been resolved electrophoretically into a major fraction including the fibrous protein, and possibly its structural subunits, and a minor fraction including at least two proteins with low sedimentation coefficients. A partially reversible change in the structure of the fibrous protein occurs under the action of 0.4 M salt or high pH. These experiments have been interpreted to indicate that in the intact fiber one, or a few, protofibrils are arranged helically or longitudinally along the fiber axis, and linked by electrostatic bonds. On the dissociation of these bonds the separated protofibrils assume a less extended form and sediment more rapidly than the intact fibers. Some material with a lower sedimentation rate is also released on the dissociation. This fraction may comprise smaller chain fragments. The volume fraction and the approximate refractive index of the fibers have been calculated. PMID:13814536

  11. The Transition from Stiff to Compliant Materials in Squid Beaks

    Science.gov (United States)

    Miserez, Ali; Schneberk, Todd; Sun, Chengjun; Zok, Frank W.; Waite, J. Herbert

    2008-03-01

    The beak of the Humboldt squid Dosidicus gigas represents one of the hardest and stiffest wholly organic materials known. As it is deeply embedded within the soft buccal envelope, the manner in which impact forces are transmitted between beak and envelope is a matter of considerable scientific interest. Here, we show that the hydrated beak exhibits a large stiffness gradient, spanning two orders of magnitude from the tip to the base. This gradient is correlated with a chemical gradient involving mixtures of chitin, water, and His-rich proteins that contain 3,4-dihydroxyphenyl-L-alanine (dopa) and undergo extensive stabilization by histidyl-dopa cross-link formation. These findings may serve as a foundation for identifying design principles for attaching mechanically mismatched materials in engineering and biological applications.

  12. Marine nekton off Oregon and the 1997 98 El Nino

    Science.gov (United States)

    Pearcy, W. G.

    2002-09-01

    Several species of migratory, warm-water, oceanic fishes invaded Oregon waters during the summer of 1997. Also, the jumbo squid ( Dosidicus gigas), common in the eastern tropical Pacific, was reported for the first time in 1997 and was caught in large numbers. The occurrence of these oceanic nekton was associated with inshore advection of anomalously warm water. During 1998, after arrival of the main El Niño signal, some warm-water coastal fishes appeared off Oregon. However, unlike observations off California, fewer species of warm-water coastal fishes were noted during the 1997-98 El Niño than during the 1982-83 El Niño.

  13. 大赤鱿于异常的洋流中遇难

    Institute of Scientific and Technical Information of China (English)

    丹·厄斯利; MariscopeChilena

    2004-01-01

    2004年2月底,数千条美洲大赤鱿(Dosidicus gigas)的尸体被冲上智利南部海滩,令当地渔民大为吃惊。通常,这些大型软体动物生活于空旷的海域,每晚它们会游到海面上捕食鱼类。根据欧洲空间机构的环境观测卫星(Envisat)所测试的海面温度,来自Mariscope Chilena海洋公司的科学家认为这一事件的发生与海洋中异常热流的涌入有关。

  14. Trace elements in the statoliths of jumbo flying squid off the Costa Rica waters%哥斯达黎加外海茎柔鱼耳石的微量元素

    Institute of Scientific and Technical Information of China (English)

    李建华; 陈新军; 刘必林; 方舟

    2013-01-01

    Jumbo flying squid, Dosidicus gigas, is the most important commercial fishery in east Pacific Ocean, and the statolith in statocyst is widely applied in the field of population identification, life history analysis and habitat environment. In this paper, we studied the trace element composition of statolith in Dosidicus gigas and its relationship with the corresponding sea surface temperature ( SST) by laser ablation inductively coupled plasma mass spectrometry ( LA-ICP-MS) , then deduced the habitat in different life stages. The results showed that 54 kinds of elements were found in statolith of Dosidicus gigas, calcium ( Ca) ,sodium( Na) and strontium( Sr) are the major elements. Sr/Ca ratio in total statolith is higher than that in Todarodes pacificus ,Loligo gahi and Gonatus fabricii. Sr/Ca ratio is the highest in embryonic phase and declined by the age,and its relationship with SST shows a reciprocal ratio. There is no significant difference of Sr/Ca ratio between different hatching months in every life stage. Ba/Ca ratio shows a "U"form from larva to adult,this could be seen as the indicator of vertical movement with larva living in the surface and deep layer for adult. Nucleus is higher than peripheral zone in Mg/Ca ratio which presents positive correlation with SST, and this might be possible with the gradua decrease of growth rate in statolith. Meanwhile, this study also shows that Dosidicus gigas in embryonic phase used its own vitellicle as the nutrient substance, so the trace elements in this phase are related with genetic factor in parent rather than the water environment.%实验通过激光剥蚀电感等离子质谱法分析哥斯达黎加外海茎柔鱼耳石的微量元素,了解其微量元素组成及其与表温关系,推测其不同生活史阶段的栖息环境.结果表明,茎柔鱼耳石含有54种元素,其中Ca、Na和Sr为主要元素.总体耳石Sr/Ca大于太平洋褶柔鱼、巴塔哥尼亚枪乌贼和黵乌贼.胚胎期耳石Sr/Ca最

  15. The transition from stiff to compliant materials in squid beaks.

    Science.gov (United States)

    Miserez, Ali; Schneberk, Todd; Sun, Chengjun; Zok, Frank W; Waite, J Herbert

    2008-03-28

    The beak of the Humboldt squid Dosidicus gigas represents one of the hardest and stiffest wholly organic materials known. As it is deeply embedded within the soft buccal envelope, the manner in which impact forces are transmitted between beak and envelope is a matter of considerable scientific interest. Here, we show that the hydrated beak exhibits a large stiffness gradient, spanning two orders of magnitude from the tip to the base. This gradient is correlated with a chemical gradient involving mixtures of chitin, water, and His-rich proteins that contain 3,4-dihydroxyphenyl-L-alanine (dopa) and undergo extensive stabilization by histidyl-dopa cross-link formation. These findings may serve as a foundation for identifying design principles for attaching mechanically mismatched materials in engineering and biological applications. PMID:18369144

  16. Rendimiento reproductivo de hembras de Cryphiops caementarius (Crustacea: Palaemonidae mantenidas con alimento natural

    Directory of Open Access Journals (Sweden)

    Magali Bazán

    2011-07-01

    Full Text Available El objetivo del presente trabajo fue determinar el rendimiento reproductivo de hembras de C. caementarius mantenidas con alimento natural. Se empleó 24 hembras inmaduras (5,2 cm y 2,0 g, acondicionadas en ocho acuarios (45 L y alimentadas durante dos meses de acuerdo a cada tratamiento, con pota (Dosidicus sp., almeja (Semele solida, poliqueto (Pseudonereis sp. y con alimento balanceado. El rendimiento reproductivo de las hembras fue mejorado cuando se alimentó con poliqueto y pota, lográndose la maduración entre 16 y 18 días con alta fecundidad (2627 y 1377 huevos g-1 y fertilidad (2566 y 1364 larvas g-1, respectivamente.

  17. Wafer-scale metasurface for total power absorption, local field enhancement and single molecule Raman spectroscopy

    OpenAIRE

    Dongxing Wang; Wenqi Zhu; Michael D Best; Camden, Jon P.; Kenneth B. Crozier

    2013-01-01

    The ability to detect molecules at low concentrations is highly desired for applications that range from basic science to healthcare. Considerable interest also exists for ultrathin materials with high optical absorption, e.g. for microbolometers and thermal emitters. Metal nanostructures present opportunities to achieve both purposes. Metal nanoparticles can generate gigantic field enhancements, sufficient for the Raman spectroscopy of single molecules. Thin layers containing metal nanostruc...

  18. Danish Mortgage Finance, Property Rights Protection and Economic Development

    OpenAIRE

    Haldrup, Karin

    2011-01-01

    The Danish mortgage finance system is attracting much international attention due to its simple, robust and efficient securitization principle, the balance principle. Housing finance experts consider how the model can be introduced in other countries to overcome shortcomings in previous mortgage systems (e.g., in the US) or to alleviate the gigantic unmet needs for housing finance around the world. In support of such efforts the research challenge was the development of a methodology for scre...

  19. INVESTIGATIONS ON RECYCLED CONCRETE AGGREGATE AND MSAND AS AGGREGATE REPLACEMENT IN CONCRETE

    OpenAIRE

    Sridhar, U; Karthick, B

    2015-01-01

    Gigantic numbers of building and destruction trashes are produced in emerging countries like India. The clearance of these trashes is serious problem because it requires huge space. The present work is to study the properties of concrete with replacement of 50% of nature sand by manufactured sand and coarse aggregates by different proportions with recycled concrete aggregates (RCA). A mix proportion for M20 grade concrete is derived with standards confirming to IS codes. RCA was p...

  20. The “Go-Global” Notion of Entrepreneurs from Non-Metropolitan Regions : Evidence from SMEs located in North Region of Sweden

    OpenAIRE

    Raza-Ullah, Tatbeeq; Mir, Rizwan

    2012-01-01

    Owing to their gigantic participation in global economic growth, the phenomenon of SMEs internationalization has become the centre of attention for numerous researchers. Starting from Uppsala model (1977) to born-global approaches today, scholars have been coming up with several theories and models time to time. An in-depth study of literature concerning SMEs internationalization, however, reveals that extant literature has primarily focused on firms that are operating from metropolitan or co...