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Sample records for caramujo gigante africano

  1. Condições microbiológicas e de ocorrência do caramujo terrestre africano na cidade de Araguaína no Estado do Tocantins

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    Lilyan Luizaga Monteiro

    2015-12-01

    Full Text Available Com base na grande incidência da espécie invasora de caramujo africano, Achatina fulica, na cidade de Araguaína, objetivamos investigar a relação existente entre as condições microbiológicas do caramujo e a ocorrência deste nas hortas domésticas na cidade. Foram seguidas metodologias laboratoriais na determinação de presença/ausência de microrganismos na superfície do caramujo, assim como de fungos filamentosos. Para complementar o trabalho foram entrevistados cento e um (101 moradores domiciliados em dezenove setores de Araguaína. Os resultados microbiológicos da superfície do caramujo apresentam valores acima de 1,2x105 UFC/g de bactérias heterotróficas, foram também isolados fungos dos gêneros Aspergillus, Penicillum, Trichophyton e Cryptococcus. No levantamento por entrevista, 86% dos entrevistados relataram uma alta incidência do caramujo nos seus domicílios no período chuvoso e 50% deles afirmaram ter algum tipo de canteiro em casa, porém 85% desconhecem as doenças que poderiam ser transmitidas por este caramujo. Concluímos que existe uma elevada contaminação microbiológica na superfície dos caramujos analisados, o que combinado com a preferencia pelos produtos de hortas domesticas desconhecendo os riscos que a invasão por caramujos pode acarretar, indicam a necessidade de ampliar o conhecimento sobre a determinação das condições de risco inerentes a A. fulica, assim como sua divulgação na sociedade araguaínense sobre seus efeitos, não somente na saúde das pessoas mas também na produtividade da agricultura artesanal.

  2. Condiloma gigante

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    Brunno Cezar Framil Sanches

    2011-09-01

    Full Text Available O condiloma gigante está altamente associado à infecção pelo Papiloma Vírus Humano (HPV, uma das doenças sexualmente transmissíveis mais prevalentes no mundo. Paciente de 54 anos, com aparecimento de lesão vegetante em região suprapúbica de crescimento progressivo há 20 anos. Realizou tratamento prévio de condiloma peniano com cauterização com sucesso. A lesão teve crescimento significativo e foi, então, submetido à biópsia com diagnóstico histológico de condiloma acuminado. A terapia eleita foi a exérese completa da lesão. A terapia invasiva se torna opção terapêutica de eleição, indicada por todos os estudos analisados. No caso em questão, a opção terapêutica foi a retirada completa da lesão devido à recorrência do quadro após terapias de cauterização química e térmica. Apesar de a abordagem cirúrgica ser uma conduta mais agressiva, no paciente em questão foi adequada por conta do tamanho e da falha de terapias anteriores.

  3. Conhecimento de África, conhecimento de Africanos: Duas perspectivas sobre os Estudos Africanos

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    Paulin J. Hountondji

    2012-10-01

    Full Text Available Em que medida são africanos os chamados Estudos Africanos? O estudo da África, tal como desenvolvido até hoje por uma longa tradição intelectual, faz parte de um projecto abrangente de acumulação do conhecimento iniciado e controlado pelo Ocidente. Este artigo defende que as sociedades africanas devem eles próprias apropriar‑se activa, lúcida e responsavelmente do conhecimento sobre elas capitalizado durante séculos. Defende, mais genericamente, o desenvolvimento em África de uma tradição autónoma, confiante em si própria, de investigação e conhecimento que responda a problemas e questões suscitados directa ou indirectamente por africanos. Convida os investigadores africanos da área dos Estudos Africanos e de todas as outras disciplinas a compreenderam que, até ao momento, têm vindo a levar a cabo um tipo de pesquisa maciçamente extravertido, isto é, orientado para fora, destinado em primeira linha a ir ao encontro das necessidades teóricas e práticas das sociedades do Norte. Propõe uma nova orientação e novas ambições para a investigação feita por africanos em África.

  4. Marcacao de caramujos Biomphalaria glabrata por radionuclideos para trabalhos em campos Radionuclide labeling of Biomphalaria glabrata snails for fiel studies

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    Miguel Archanjo Muniz Leal

    1982-03-01

    Full Text Available Os autores marcam caramujos Biomphalaria glabrata com 75Se, 59Fe, 89Sr e 90Sr e através das curvas de captação, decaimento e distribuição dos radionuclídeos na concha/partes moles do caramujo, concluem que o radioestrõncio pode ser utilizado em experiências em campo sobre dispersão e dinâmica de população de caramujos.The authors mark snails Biomphalaria glabrata with 75Se, 59Fe, 89Sr and 90Sr and through curves of uptake and decay and distribution of the radionuclides in the shell/soft parts conclude that radiostrontium can be used in field experiments on dispersion and dynamics of snail populations.

  5. Pulsars: Gigantic Nuclei

    CERN Document Server

    Xu, Renxin

    2011-01-01

    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 {\\em 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.

  6. Registro de Achatina fulica Bowdich, 1822 (Mollusca, Gastropoda no Brasil: caramujo hospedeiro intermediário da angiostrongilíase

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    Horácio Manuel Santana Teles

    1997-06-01

    Full Text Available A introdução de Achatina fulica é assinalada em Itariri, SP, Brasil. Essa espécie de caramujo terrestre foi importada para cultivo, visando à comercialização para consumo humano como "escargot". O encontro de exemplares em vida livre mostra a dispersão de A. fulica e, conseqüentemente, o risco de transmissão de Angiostrongylus cantonensis, nematóide parasita do homem e de outros vertebrados. Além disso, o caramujo é uma praga importante da agricultura.

  7. Quiste gigante de ovario

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    Dagoberto Calderón Rodríguez

    2014-08-01

    Full Text Available Un crecimiento quístico del ovario debe medir por lo menos 2,5 cm de diámetro para denominarse quiste. Se presenta el caso de una paciente de 36 años, femenina, perteneciente a la etnia Wayú, con un quiste gigante en ovario derecho, de aproximadamente 10 cm de diámetro, un peso de 3,6 Kg y torcido sobre su pedículo, que le provoca dolor intenso de más de un mes de evolución. Se practicó intervención quirúrgica y se comprobaron signos macroscópicos de necrobiosis de ovario, siendo el resultado de la biopsia un teratoma maduro. Su resultado final fue satisfactorio

  8. Linfedema escrotal gigante

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    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.

  9. Pituitary gigantism: Causes and clinical characteristics.

    Science.gov (United States)

    Rostomyan, Liliya; Daly, Adrian F; Beckers, Albert

    2015-12-01

    Acromegaly and pituitary gigantism are very rare conditions resulting from excessive secretion of growth hormone (GH), usually by a pituitary adenoma. Pituitary gigantism occurs when GH excess overlaps with the period of rapid linear growth during childhood and adolescence. Until recently, its etiology and clinical characteristics have been poorly understood. Genetic and genomic causes have been identified in recent years that explain about half of cases of pituitary gigantism. We describe these recent discoveries and focus on some important settings in which gigantism can occur, including familial isolated pituitary adenomas (FIPA) and the newly described X-linked acrogigantism (X-LAG) syndrome.

  10. Obituary: John Louis Africano III, 1951-2006

    Science.gov (United States)

    Barker, Edwin, S.

    2007-12-01

    The orbital debris, space surveillance, and astronomical communities lost a valued and beloved friend when John L. Africano passed away on July 27, 2006, at the young age of 55. John passed away in Honolulu, Hawaii, from complications following a heart attack suffered while playing racquetball, which was his avocation in life. Born on February 8, 1951, in Saint Louis, Missouri, John graduated with a B.S. in Physics from the University of Missouri at Saint Louis in 1973, and received a Master's degree in Astronomy from Vanderbilt University in 1974. John had a real love for astronomical observing and for conveying his many years of experience to others. He encouraged many young astronomers and mentored them in the basics of photometry and astronomical instrumentation. John was author or co-author on nearly one-hundred refereed publications ranging from analyses of cool stars to the timing of occultations to space surveillance. He was honored for his contributions to minor planet research when the Jet Propulsion Laboratory named Minor Planet 6391 (Africano) after him. John held operational staff positions at several major observatories including McDonald Observatory in Texas, Kitt Peak National Observatory in Arizona, and the Cloudcroft Telescope Facility in New Mexico. He observed at numerous observatories worldwide, including Cerro Tololo Inter-American Observatory (CTIO) in Chile, developing a world-wide network of friends and colleagues. John's ability to build diverse teams through his managerial and technical skills, not to mention his smiling personality, resulted in numerous successes in the observational astronomy and space surveillance arenas. As an astronomer for Boeing LTS Inc., he worked for many years at the Advanced Maui Optical and Space Surveillance site (AMOS) on Maui, Hawaii, where he contributed his operational and instrumental expertise to both the astronomy and space surveillance communities. He was also the co-organizer of the annual AMOS

  11. Estudos Africanos em Portugal e Espanha: perspectivas comparadas

    OpenAIRE

    Heimer, Franz-Wilhelm; Tomàs, Jordi

    2010-01-01

    Desde meados do século XX, a acompanhar o processo de descolonização e as trajectórias pós-coloniais em África, constituiu-se a nível internacional uma nova área do saber, a dos estudos africanos interdisciplinares em ciências sociais (no sentido amplo, incluindo a economia e a história). Retomando e transformando algumas vezes tradições anteriores, fundou-se mundo afora neste domínio uma larga centena de instituições científicas, de investigação e de ensino. Criaram-se, na Europa Ocidental e...

  12. Gigantism

    Science.gov (United States)

    ... Prognosis) Pituitary surgery is usually successful in limiting growth hormone production. Early treatment can reverse many of the changes caused by growth hormone excess. Possible Complications Surgery may lead to low ...

  13. Hidrocele gigante en paciente anciano

    OpenAIRE

    Ada Arleny Pérez Mayo; Yordania Velázquez Avila

    2014-01-01

    Se presenta el caso de un paciente de 87 años, intervenido por primera vez en el Hospital Nacional “San Pedro Necta” del Departamento de Huehuetenango en Guatemala, por presentar hidrocele gigante de más de veinte años de evolución. El examen físico mostró tumoración translúcida dolorosa en la bolsa escrotal izquierda, con el posible diagnóstico de hidrocele tabicado o no comunicante. El preoperatorio consistió en la canalización de vena periférica, administración de profilaxis antibiótica co...

  14. 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.

  15. Cistos peribiliares em leão-africano (Panthera leo

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    Ricardo B. Lucena

    2011-02-01

    Full Text Available São descritos os achados macroscópicos e histopatológicos de cistos peribiliares em uma fêmea adulta de leão-africano (Panthera leo. Macroscopicamente, todos os lobos hepáticos continham numerosos cistos preenchidos por líquido translúcido. Histologicamente, os cistos estavam localizados no hilo hepático e nos tratos portais. Os cistos eram revestidos internamente por epitélio simples, constituído por células colunares ou cuboidais e não mucinosas, de acordo com avaliação para ácido periódico de Schiff/azul alciano. Na imuno-histiquímica, todas as células desse epitélio foram positivas para citoceratina. O leão morreu de complicações relacionadas a um carcinoma pulmonar e não foram observadas alterações clínicas associadas à lesão hepática, comprovando que cistos peribiliares em leões também ocorrem não associados a sinais clínicos.

  16. Hidrocele gigante en paciente anciano

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    Ada Arleny Pérez Mayo

    2014-09-01

    Full Text Available Se presenta el caso de un paciente de 87 años, intervenido por primera vez en el Hospital Nacional “San Pedro Necta” del Departamento de Huehuetenango en Guatemala, por presentar hidrocele gigante de más de veinte años de evolución. El examen físico mostró tumoración translúcida dolorosa en la bolsa escrotal izquierda, con el posible diagnóstico de hidrocele tabicado o no comunicante. El preoperatorio consistió en la canalización de vena periférica, administración de profilaxis antibiótica con ceftriaxona y rasurado de la piel. Durante el acto operatorio se constató hidrocele izquierdo, con acumulación de líquido acuoso de la túnica vaginal que rodeaba el testículo, cuantificable alrededor de los 500 ml. La técnica quirúrgica consistió en la eversión o plicatura de la vaginal. No se presentaron entidades asociadas, como quiste del cordón, hernia inguinal o fimosis. No existieron complicaciones. Se reportó una estadía hospitalaria de cuatro días y el paciente evolucionó favorablemente. No ocurrió recidiva durante el año de seguimiento

  17. Memoria y cambio en los relatos épicos africanos

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    Creus, Jacint

    2006-06-01

    Full Text Available The aim of this article is double. First I want to introduce to the reader the so-called «Major Genders» in African oral literature; these can be classified as «Installation Epic Poems», «Heroic Epic Poems» and «Clan-related Epic Poems.» Second, I discuss a critique of the compilation and edition methodology used up to the present, which comes down to us wrapped in an aura of «authenticity» that corresponds with neither the reality of the compiled texts nor the vitality currently displayed by African oral literature. What really matters is not so much the creation and transmission of the narratives as the authority granted by African societies and western academic circles to a clique of specialists who performs a paralyzing function on these genders. Fortunately, there are in the field other, less heeded, politically-independent specialists who encourage the creativity and vitality of the «Major Genders» by paying attention to other features.

    La pretensión de este artículo es doble: por una parte, presentar a los lectores los llamados «géneros mayores» africanos, que pueden clasificarse en «epopeyas de instalación », «epopeyas heroicas» y «epopeyas clánicas». Pero también, por otra parte, se expone la crítica a la metodología de recopilación y publicación utilizada hasta ahora, que ha tenido siempre una pretensión de «autenticidad» que no se corresponde ni con la realidad de los textos recopilados ni con la vitalidad que toda la literatura oral africana conserva actualmente. La clave para este estudio está no tanto en la creación y la transmisión de los relatos, sino en la autoridad otorgada por las sociedades africanas y por el mundo académico occidental a determinados especialistas, que ejercen una función paralizante del género épico; frente a ellos, sin embargo, existen otros especialistas, menos tenidos en cuenta, alejados de las formas políticas del poder, que estimulan la creatividad y la

  18. Arte africano como punto de partida para una actividad de arte terapia

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    Vassiliadou Yiannaka, María

    2001-01-01

    La visita a una exposición de arte africano realizada con un grupo de pacientes de un Hospital Psiquiátrico sirve en este artículo para reflexionar sobre los aspectos implicados en la organización de actividades de arte terapia y sobre el problema de la accesibilidad de todos los ciudadanos a la vida cultural

  19. La enseñanza de la historia de África a través del cine africano

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    Ordóñez, Mariví

    2011-01-01

    La llegada de las independencias trajo consigo para una buena parte de los países africanos la oportunidad de reapropiarse de su propia imagen y empezar a reescribir su historia. El cine africano, pese a los condicionantes impuestos desde las antiguas metrópolis, ha jugado un importante papel en esta tarea y ha llevado a cabo un encomiable esfuerzo de ‘descolonización’ de las pantallas y las mentes. En estos términos, el cine africano se sitúa hoy como una fuente estimable para abordar la doc...

  20. Padronização da técnica de marcação de caramujos Biomphalaria glabrata com radioestroncio Standardization of the technic of labeling Biomphalaria glabrata snails with radiostrontium

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    Miguel Archanjo Muniz Leal

    1982-06-01

    Full Text Available Caramujos Biomphalaria glabrata vetor da esquistossomose mansônica, utilizados em experiências de campo, nas quais se faz necessário sua identificação e/ou localização, devem ser marcados com radioestrôncio 85,89 ou 90. Sua marcação em laboratório deve ser procedida em aquários de vidro sem fundo de areia, temperatura de 26,5 ± 1ºC, pH ajustado ao valor encontrado no "habitat", aeração artificial, alimentação diária com pequenas porções de alface fresca e 25 ml de água desionizada por caramujo. O nível de atividade no caramujo pode ser estimado sabendo-se que para o tempo de marcação de 5 dias e atividades iniciais de 0,036 a 0,362 µCi/ml, a captação global para grupos de 10 caramujos está em torno de 84 ± 2% e que a marcação em água contendo cálcio, praticamente não se altera até concentrações de 50ppm. A sobrevida ao longo de nove semanas não foi influenciada pela presença de radioestrôncio no caramujo.The vector snail of schistosomiasis mansoni, Biomphalaria glabrata, when used in field experiments in which it is to be recovered and/or located, should be labeled with radiostrontium 85,89 or 90. The labeling in laboratory should be carried out in an artificially aerated aquarium with 25 ml of deionized water per snail, without sand at the bottom, at a temperature of 26.5 ± 1ºC, pH adjusted to the value found in the natural habitat, and the snails should be fed with small pieces of fresh lettuce. The level of snail activity can be estimated taking into account that, for a labeling time of 5 days and initial activities of 0.036 to 0.362 µCi/ml, the global uptake for groups of 10 snails is about 84 ± 2% and that labeling in calcium-containing water parctically does not change till a 50 ppm concentration. Survival along 9 weeks was not influenced by the presence of radiostrontium in the snail.

  1. Triangulation of the Gigantic Jets in 20 August 2014

    Science.gov (United States)

    Kang-Ming, P.; Hsu, R. R.; Su, H. T.; Chen, A. B. C.; Chou, J. K.; Chang, S. C.; Wu, Y. J.; Chien-Lun, H.; Yang, I. C.; Tsai, S. H.

    2015-12-01

    Coordinate optical observation campaigns on TLEs near Taiwan are held since 2011 with the aim to triangulate TLEs. Currently, there are four stations with baseline varying from 100 to 400 km between them. Our optical observation systems recorded 48 various types of TLEs on the night of 20 August 2014, with eight of them being gigantic jets that were recorded by at least two stations. Due to the length of baselines and the TLE occurring locations, the earth curvature needed to be taken into account by means of spherical trigonometry method. The preliminary results shows the gigantic jets occurred over the northern Taiwan and the accuracy of geolocation is less than 1 km and the accuracy of the retrieval height on the key structures is less than 0.5 km. The triangulation results of the eight events indicate most of these gigantic jets terminated at 80-90km, but one of the gigantic jets is likely extend to 100 km. Three of the eight gigantic jets occurred consequently after previous one with time interval of 500ms to more than 100s. The previous gigantic jet is likely to influence the consequent gigantic jet for usually the consequent gigantic jet has more beads structures in high altitude and one of the streamer column of a consequent gigantic jets at 55 -60 km is identified to re-bright, which is more than 100s after the previous gigantic jet.

  2. Evolution of gigantism in amphiumid salamanders.

    Science.gov (United States)

    Bonett, Ronald M; Chippindale, Paul T; Moler, Paul E; Van Devender, R Wayne; Wake, David B

    2009-05-20

    The Amphiumidae contains three species of elongate, permanently aquatic salamanders with four diminutive limbs that append one, two, or three toes. Two of the species, Amphiuma means and A. tridactylum, are among the largest salamanders in the world, reaching lengths of more than one meter, whereas the third species (A. pholeter), extinct amphiumids, and closely related salamander families are relatively small. Amphiuma means and A. tridactylum are widespread species and live in a wide range of lowland aquatic habitats on the Coastal Plain of the southeastern United States, whereas A. pholeter is restricted to very specialized organic muck habitats and is syntopic with A. means. Here we present analyses of sequences of mitochondrial and nuclear loci from across the distribution of the three taxa to assess lineage diversity, relationships, and relative timing of divergence in amphiumid salamanders. In addition we analyze the evolution of gigantism in the clade. Our analyses indicate three lineages that have diverged since the late Miocene, that correspond to the three currently recognized species, but the two gigantic species are not each other's closest relatives. Given that the most closely related salamander families and fossil amphiumids from the Upper Cretaceous and Paleocene are relatively small, our results suggest at least two extreme changes in body size within the Amphuimidae. Gigantic body size either evolved once as the ancestral condition of modern amphiumas, with a subsequent strong size reduction in A. pholeter, or gigantism independently evolved twice in the modern species, A. means and A. tridactylum. These patterns are concordant with differences in habitat breadth and range size among lineages, and have implications for reproductive isolation and diversification of amphiumid salamanders.

  3. Evolution of gigantism in amphiumid salamanders.

    Directory of Open Access Journals (Sweden)

    Ronald M Bonett

    Full Text Available The Amphiumidae contains three species of elongate, permanently aquatic salamanders with four diminutive limbs that append one, two, or three toes. Two of the species, Amphiuma means and A. tridactylum, are among the largest salamanders in the world, reaching lengths of more than one meter, whereas the third species (A. pholeter, extinct amphiumids, and closely related salamander families are relatively small. Amphiuma means and A. tridactylum are widespread species and live in a wide range of lowland aquatic habitats on the Coastal Plain of the southeastern United States, whereas A. pholeter is restricted to very specialized organic muck habitats and is syntopic with A. means. Here we present analyses of sequences of mitochondrial and nuclear loci from across the distribution of the three taxa to assess lineage diversity, relationships, and relative timing of divergence in amphiumid salamanders. In addition we analyze the evolution of gigantism in the clade. Our analyses indicate three lineages that have diverged since the late Miocene, that correspond to the three currently recognized species, but the two gigantic species are not each other's closest relatives. Given that the most closely related salamander families and fossil amphiumids from the Upper Cretaceous and Paleocene are relatively small, our results suggest at least two extreme changes in body size within the Amphuimidae. Gigantic body size either evolved once as the ancestral condition of modern amphiumas, with a subsequent strong size reduction in A. pholeter, or gigantism independently evolved twice in the modern species, A. means and A. tridactylum. These patterns are concordant with differences in habitat breadth and range size among lineages, and have implications for reproductive isolation and diversification of amphiumid salamanders.

  4. Gigantic Suprapubic Lymphedema: A Case Study

    Science.gov (United States)

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

    2016-01-01

    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

  5. 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.

  6. 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.

  7. Fungal cell gigantism during mammalian infection.

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    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.

  8. Fungal cell gigantism during mammalian infection.

    Science.gov (United States)

    Zaragoza, Oscar; García-Rodas, Rocío; Nosanchuk, Joshua D; Cuenca-Estrella, Manuel; Rodríguez-Tudela, Juan Luis; Casadevall, Arturo

    2010-01-01

    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.

  9. Sotos syndrome: An interesting disorder with gigantism

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    Nalini A

    2008-01-01

    Full Text Available 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.

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

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    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.

  11. Conocimiento indígena y poder global: lecciones de los debates africanos

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    Raewyn Connell

    2006-10-01

    Full Text Available En este artículo discuto las implicaciones de los debates africanos sobre la sociología indígena, la filosofía africana y el “Renacimiento africano”, para las ciencias sociales y las humanidades en otras partes del mundo. Los tres debates se preocupan por el estatus del conocimiento local en tensión con el poder metropolitano; debatir, y basarse en este tipo de comprensión situacional es la forma en que podemos superar la dicotomía entre conocimiento “universal” y “local”.

  12. Aneurisma gigante da arteria cerebral media: relato de um caso

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    Geraldo Pianetti Filho

    1978-06-01

    Full Text Available É relatado um caso de aneurisma gigante da artéria cerebral média com as dimensões de 12,0 x 8,0 x 6,0 cm, tratado cirurgicamente mediante craniotomia e ressecção. É feita breve análise da conduta diante dos aneurismas gigantes. Os autores acreditam ser este o maior aneurisma cerebral já descrito até o presente momento.

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

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    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.

  14. El origen africano del cultivo del arroz en Las Américas

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    Carney, Judith A.

    2015-06-01

    Full Text Available Until the period of the transatlantic slave trade, rice was not cultivated in the Americas. By the eighteenth century the crop was widely established across plantation societies from South Carolina to Brazil. Grown by slaves as well as maroons, for subsistence and also for export, the onset of rice cultivation in the Americas has long been attributed to European planters. This article presents evidence that supports African agency in establishing rice culture in the New World. Emphasis is on African rice (Oryza glaberrima, enslaved West Africans for whom the crop was a dietary staple, and an indigenous rice knowledge system with identical features across the African and American Atlantic. A comparative analysis of land use, methods of cultivation, milling and cooking traditions illuminates the diffusion of African rice culture to the Americas and the role of West African slaves in pioneering rice as a New World subsistence staple.El arroz no empezó a ser cultivado en las Américas sino hasta el periodo del comercio transatlántico de esclavos. Para el siglo XVIII este cultivo ya se había establecido extensamente en plantaciones desde Carolina del Sur hasta Brasil. Cultivado por esclavos así como cimarrones, tanto para la subsistencia como para la exportación, el comienzo de la cultivación de arroz en las Américas invariablemente se ha atribuido a los dueños de plantaciones europeos. Este artículo presenta evidencia del importante papel que desempeñaron los africanos en establecer la cultura del arroz en el Nuevo Mundo. Este trabajo se enfoca sobre el arroz africano (Oryza glaberrima, personas esclavizadas de África occidental para quienes este cultivo era un alimento básico, y un sistema de conocimiento indígena sobre el arroz con características idénticas entre el Atlántico africano y americano. Un estudio comparativo de usos del suelo, métodos de cultivo, procesos de molienda y tradiciones culinarias ilumina el tema de la

  15. Intrusiones de polvo africano en la región Caribe de Colombia

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    Omar Javier Ramírez Hernández

    2015-02-01

    Full Text Available El transporte intercontinental de material mineral desde África hacia el Caribe, Norteamérica y Suramérica es un fenómeno de interés investigativo internacional. Varios estudios han llamado la atención sobre los efectos meteorológicos y las implicaciones climáticas derivadas de la presencia de este aerosol en la atmósfera, como también de los potenciales efectos sobre la salud humana. La región Caribe colombiana no es ajena a esta problemática, pero son escasos los estudios realizados. Por lo anterior, el objetivo de este artículo es identificar eventos de intrusión de polvo de origen africano en la región Caribe de Colombia. Metodológicamente se analizaron mapas de concentración de polvo generados por los modelos GEOS-5, SKIRON, NAAPS y CALIPSO, entre el 01 de enero y el 31 de diciembre de 2012. También se utilizaron imágenes generadas por el sensor satelital MODIS e información de redes de calidad del aire de la región. Según los resultados obtenidos, existen evidencias para afirmar que al norte de Colombia, en la región Caribe, se detectan eventos de intrusión de polvo de origen africano. El periodo del año en que se presentan mayores niveles de concentración es entre marzo y septiembre, sobresaliendo los meses de marzo, junio, julio y agosto.

  16. Late paleozoic fusulinoidean gigantism driven by atmospheric hyperoxia.

    Science.gov (United States)

    Payne, Jonathan L; Groves, John R; Jost, Adam B; Nguyen, Thienan; Moffitt, Sarah E; Hill, Tessa M; Skotheim, Jan M

    2012-09-01

    Atmospheric hyperoxia, with pO(2) in excess of 30%, has long been hypothesized to account for late Paleozoic (360-250 million years ago) gigantism in numerous higher taxa. However, this hypothesis has not been evaluated statistically because comprehensive size data have not been compiled previously at sufficient temporal resolution to permit quantitative analysis. In this study, we test the hyperoxia-gigantism hypothesis by examining the fossil record of fusulinoidean foraminifers, a dramatic example of protistan gigantism with some individuals exceeding 10 cm in length and exceeding their relatives by six orders of magnitude in biovolume. We assembled and examined comprehensive regional and global, species-level datasets containing 270 and 1823 species, respectively. A statistical model of size evolution forced by atmospheric pO(2) is conclusively favored over alternative models based on random walks or a constant tendency toward size increase. Moreover, the ratios of volume to surface area in the largest fusulinoideans are consistent in magnitude and trend with a mathematical model based on oxygen transport limitation. We further validate the hyperoxia-gigantism model through an examination of modern foraminiferal species living along a measured gradient in oxygen concentration. These findings provide the first quantitative confirmation of a direct connection between Paleozoic gigantism and atmospheric hyperoxia.

  17. Ependimoma myxopapilar sacro gigante con osteolisis

    Science.gov (United States)

    Ajler, Pablo; Landriel, Federico; Goldschmidt, Ezequiel; Campero, Álvaro; Yampolsky, Claudio

    2014-01-01

    Objetivo: la presentación de un caso de una paciente con un ependimoma sacro con extensa infiltración y destrucción ósea local. Descripción del caso: una mujer de 53 años acudió a la consulta por dolor lumbosacro y alteraciones sensitivas perineales y esfinterianas. La imágenes por Resonancia Magnética (IRM) y la Tomografía Axial Computada (TAC) mostraron una lesión expansiva gigante a nivel S2-S4 con extensa osteólisis e invasión de tejidos adyacentes. Se realizó una exéresis tumoral completa con mejoría del estatus funcional. La anatomía patológica informó ependimoma mixopapilar. Discusión: la extensión de la resección quirúrgica es el mejor predictor de buen pronóstico. El tratamiento radiante se reserva como opción adyuvante para las resecciones incompletas y recidiva tumoral. La quimioterapia sólo debería utilizarse en casos en que la cirugía y la radioterapia estén contraindicadas. Conclusión: Los ependimomas mixopapilares sacros con destrucción ósea y presentación intra y extradural son muy infrecuentes y deben ser tenidos en cuenta entre los diagnósticos diferenciales preoperatorios. Su resección total, siempre que sea posible, es la mejor alternativa terapéutica. PMID:25165615

  18. Exéresis quirúrgica radical como único tratamiento del condiloma acuminado gigante: a propósito de un caso

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    Indalecio Parapar

    2007-06-01

    Full Text Available Los condilomas o verrugas genitales son producidos por el virus del papiloma humano del que existen más de 100 genotipos distintos. De ellos, cerca de 40 son transmitidos sexualmente. Se presenta el caso de una mujer con condiloma acuminado gigante de localización vulvo perineal y perianal, de cinco años de evolución que le dificultaba la micción, las relaciones sexuales, e incluso la marcha; además había fetidez, prurito y en ocasiones dolor. El examen histopatológico fue compatible con condiloma acuminado. Se realizó extirpación quirúrgica radical del tumor con excelentes resultados funcionales y cosméticos, sin complicaciones postoperatorias y sin recurrencias ni cicatrices hipertróficas al año de evolución. Es de interés la publicación por tratarse del primer caso que se informa en el Estado de Eritrea, país en desarrollo del cuerno africano.

  19. Macrodystrophia lipomatosa: An unusual cause of localized gigantism

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    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.

  20. Macrodystrophia Lipomatosa: An Unusual Cause of Localized Gigantism.

    Science.gov (United States)

    Maheswari, S Uma; Sampath, V; Ramesh, A; Manoharan, K

    2016-01-01

    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.

  1. 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.

  2. Surgery of gigantic infrarenal aneurysm of abdominal aorta

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    N. Rustempašić

    2005-08-01

    Full Text Available The case shows gigantic aneurysm of abdominal aorta, localized infrarenally, as well as aneurysms of bilateral iliac arteries, which were solved successfully by resection of aneurism of abdominal aorta, closure of iliac arteries near aortic bifurcation, and interposition of aorta-bifemural vascular graft. There were no postoperative complications,and final outcome was fully satisfactory.

  3. Gigantism in sibling unrelated to multiple endocrine neoplasia: case report.

    Science.gov (United States)

    Matsuno, A; Teramoto, A; Yamada, S; Kitanaka, S; Tanaka, T; Sanno, N; Osamura, R Y; Kirino, T

    1994-11-01

    The cases of gigantism sisters with somatotroph adenomas unrelated to multiple endocrine neoplasia (MEN) Type 1 are reported. The sisters grew rapidly since they were 5 or 6 years old and were diagnosed to have gigantism with pituitary adenoma by computed tomographic scan and magnetic resonance imaging. A serum endocrinological examination showed the elevated growth hormone values. After thyroxine-releasing hormone stimulation, growth hormone values exhibited a paradoxical rise. They were supposed to be unrelated to MEN Type 1, because analysis of the 11th chromosomes and the other endocrine functions were normal. They were operated on by the transphenoidal method. Immunohistochemical staining of both tumor specimens confirmed somatotroph adenomas. Pituitary adenoma associated with MEN Type 1 is a well-recognized entity. However, the sporadic occurrence of pituitary adenoma unrelated to MEN Type 1, especially in siblings, is extremely rare. Fifteen cases of pituitary adenomas in siblings were described in the literature. As for gigantism, only two brothers were reported. Our case of gigantism sisters is the second sporadic case. In our review of the isolated cases of pituitary adenoma in siblings described in the literature, 12 (70%) of 17 cases including ours are acromegaly or gigantism. This incidence is much higher than that of MEN Type 1 patients with pituitary adenomas. The cause of the familial occurrence of pituitary adenomas is still unclear, although autosomal recessive inheritance has been suggested. It has been stated that point mutations in codon 201 or 227 of the Gs alpha gene located in chromosome 20 were found in about 35 to 40% of somatotroph adenomas.(ABSTRACT TRUNCATED AT 250 WORDS)

  4. Política exterior do Governo Lula: o desafio africano

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    José Flávio Sombra Saraiva

    2002-12-01

    Full Text Available Este artigo discute as perspectivas para a política africana do Brasil tendo como base as últimas eleições presidenciais. Ao contrário do governo de Fernando Henrique Cardoso, espera-se que o governo Lula renove a política externa brasileira e restabeleça os contatos perdidos com o continente africano ao longo da última década. Por fim, há a exposição dos principais motivos para o relançamento da política africana do Brasil.This article discusses the perspectives of the African policy of Brazil based on the last presidential elections. Unlike Fernando Henrique Cardoso's government, it is expected that Lula will renew the Brazilian foreign policy and reestablish the lost contacts with the African continent during the last decade. At the end, there is an exposition of the main reasons to reintroduce the African policy of Brazil.

  5. Aspectos etológicos na sobrevivência dos caramujos vetores da xistosomose ao tratamento com moluscicidas Ethologic aspects of survival of schistosomiasis vector snails to treatment with molluscicides

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    Otávio S. Pieri

    1981-03-01

    Full Text Available Um levantamento dos fatores comportamentais considerados de importância para a sobrevivência dos caramujos vetores da xistosomose aos moluscicidas permitiu caracterizar como tendo função presumivelmente protetora: retração na concha, afastamento de locais dessecados, saída da água, enterramento e afastamento de agentes tóxicos. A partir da constatação de que as evidências disponíveis até agora pouco esclarecimento dão sobre a naturaza dos mecanismos deflagadores de tais comportamento e seu valor adaptativo em si, enfatizou-se a necessidade de um enfoque etológico para a descrição e análise dos aspectos pertinentes.The role of behavioural data on the survival of schistosomiasis vector snails under molluscicide treatment was reviewed. It was seem that those modes of behaviour such as retracting into shell, avoiding dry places, crawling out of water, burrowing and avoiding toxic agents have been considered to be of protective value, but the evidence availabel has not provided much information about the nature of the mechanisms involved their survival significance. The necessity of an ethological approach for a proper description and analysis of the relevant aspects was stressed.

  6. Dinâmica Socio-Cultural da Cidade: A Conflitualidade dos Imigrantes Africanos em Lisboa

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    Anelino Francisco Silva

    2010-01-01

    Full Text Available O artigo analisa sobre a dinâmica sociocultural, o direito dos imigrantes à cidade, caso da Área Metropolitana de Lisboade Lisboa, traz uma reflexão do atual processo de inserção ou não dos imigrantes africanos de Angola, Cabo-Verde, São Tomé e Guine-Bissau, como um fator de conflito gerado pela sua permanência na cidade. A globalização atua no global-local, ajuizando a cidade reforçar as características local baseada da legitimidade cultural e política. A cidade metrópole precisa estar preparada às novas exigências produtivas do sistema econômico e da reprodução social. Sendo Lisboa, no contexto dos processos de estruturação econômico-territorial e de diferenciação sócio-urbanística, o espaço polarizado pela capital do país e, ter sido a metrópole que teve sob seu domínio Angola, Cabo -Verde, São Tomé e Guine – Bissau, que com o fim da colonização inicia um processo migratório para Portugal, especialmente, Lisboa. A baixa inserção ao mercado de trabalho, a tênue socialização cultural e a negação ao direito à cidade passam a ser obstáculos em toda sua plenitude

  7. Las asociaciones de inmigrantes africanos. Organización, proyección y actuaciones

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    Garreta Bochaca, Jordi

    2013-06-01

    Full Text Available Associations for foreign-origin people have grown notably since the nineteen-nineties, and more so in the first decade of the 21st century. This growth has been influenced by the interests of their members but also by the social, political and institutional context that has favoured, while also conditioning, them. The work presented here contains the results of a survey carried out among 206 representatives of associations of African-origin immigrants in the Catalonia, Valencia and Navarre regions, with the aim of defining the profile of these associations, their organisation, working and activities. Among the questions dealt with, we see how this associational activity is still relatively new. It has no common organizational structure, but rather the structures and strategies that each association acquires depend on its internal and external dynamics, its members’ interests and its age.El asociacionismo de personas de origen extranjero ha crecido de forma notable desde los años 90 y, especialmente, desde los 2000, influenciado por los intereses de estas personas pero también por el contexto social, político e institucional que lo ha favorecido y condicionado. Este trabajo presenta los resultados de una encuesta realizada a 206 representantes de asociaciones de inmigrantes de origen africano de las comunidades autónomas de Cataluña, Valencia y Navarra. Nuestro objetivo ha consistido en clasificar las asociaciones, estudiar su organización y funcionamiento y conocer sus ámbitos de actuación. Entre otras cuestiones, hemos observado que este asociacionismo es joven y no responde a una única forma organizativa, sino que, en función de dinámicas internas y externas, intereses de los asociados y años de vida de cada asociación, adquiere diferentes estructuras y estrategias.

  8. Asociaciones de migrantes africanos. Educación y formación

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    Palaudàrias i Martí, Josep M.

    2013-06-01

    Full Text Available Based on the data obtained in a survey of 206 representatives of African immigrant associations, nine life histories and 54 interviews carried out with representatives of these associations, this article analyzes their educational reality from different points of view. First, we establish the importance the association leaders give to education (the role that education played in their migration processes and in the associations they lead. Second, we take a close look at their educational level and training. And finally, we analyze the training activities promoted by these associations or the activities in which they are involved (collaborating with other associations, institutions or services. Concerning these activities, we analyze their types (topics covered: language, religion, labor market integration, etc., and orientation (tendency to multiculturalism and collaboration or distance from formal education institutions.A partir de los datos obtenidos a través de un cuestionario suministrado a 206 representantes de asociaciones de inmigrantes de origen africano y de 20 historias de vida y 66 entrevistas realizadas a representantes de estas asociaciones, este artículo analiza la realidad educativa de las asociaciones desde diferentes puntos de vista. Primero, estableciendo el valor que los dirigentes asociativos dan a la educación (papel que ha jugado en sus procesos migratorios y papel que juega en las asociaciones que dirigen. En segundo lugar, aproximándonos a su nivel de estudios e itinerario formativo. Y finalmente, analizando las actividades formativas que estas asociaciones impulsan o en las que participan (colaborando con otras asociaciones, instituciones o servicios. De estas actividades, se han analizado tanto su tipología (temas que se abordan: lengua, religión, inserción laboral, entre otros, como su orientación (tendencia al multiculturalismo y colaboración o distanciamiento respecto al ámbito educativo formal.

  9. Nevo melanocítico congênito gigante

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    Guilherme Lippi Ciantelli

    2014-06-01

    Full Text Available Os nevos melanocíticos congênitos (NMC são lesões pigmentadas formadas a partir do acúmulo anormal de melanócitos neuroectodérmicos em uma localização ectópica e estão presentes em 1% dos recém-nascidos. Contudo, os NMC gigantes ocorrem em apenas 1:20.000 nascidos vivos, enquanto os com a típica distribuição em “calção de banho” são muito raros, estando presentes em apenas 1:500.000 nascidos vivos. Neste artigo os autores relatam um caso de NMC gigante em “calção de banho” devido a sua raridade, revisando os aspectos diagnósticos e terapêuticos desta afecção.

  10. A gigantic feathered dinosaur from the lower cretaceous of China.

    Science.gov (United States)

    Xu, Xing; Wang, Kebai; Zhang, Ke; Ma, Qingyu; Xing, Lida; Sullivan, Corwin; Hu, Dongyu; Cheng, Shuqing; Wang, Shuo

    2012-04-04

    Numerous feathered dinosaur specimens have recently been recovered from the Middle-Upper Jurassic and Lower Cretaceous deposits of northeastern China, but most of them represent small animals. Here we report the discovery of a gigantic new basal tyrannosauroid, Yutyrannus huali gen. et sp. nov., based on three nearly complete skeletons representing two distinct ontogenetic stages from the Lower Cretaceous Yixian Formation of Liaoning Province, China. Y. huali shares some features, particularly of the cranium, with derived tyrannosauroids, but is similar to other basal tyrannosauroids in possessing a three-fingered manus and a typical theropod pes. Morphometric analysis suggests that Y. huali differed from tyrannosaurids in its growth strategy. Most significantly, Y. huali bears long filamentous feathers, thus providing direct evidence for the presence of extensively feathered gigantic dinosaurs and offering new insights into early feather evolution.

  11. Hamartoma mamario gigante: dos casos de una entidad rara

    Directory of Open Access Journals (Sweden)

    T.A. Gomes-Rodrigues

    2014-09-01

    Full Text Available El hamartoma gigante de la mama es una entidad clínico-patológica inusual que tiende a confundirse con otros tumores. A pesar del avance en las técnicas diagnósticas, su diagnóstico clínico es difícil y normalmente solo se confirma cuando se analiza toda la pieza de resección. El diagnóstico diferencial debe incluir entidades como el fibroadenoma, lipoma, tumor phyllodes y diversos tipos de carcinomas. Presentamos 2 casos de hamartoma gigante de mama en mujeres de edad media, de los cuales uno fue tratado mediante mastectomía conservadora de complejo pezónareola y reconstrucción con prótesis y el otro con biopsia escisional y remodelación con patrón de pexia mamaria.

  12. Multiple origins of gigantism in stem baleen whales

    Science.gov (United States)

    Tsai, Cheng-Hsiu; Kohno, Naoki

    2016-12-01

    Living baleen whales (Mysticeti) include the world's largest animals to have ever lived—blue whales ( Balaenoptera musculus) can reach more than 30 m. However, the gigantism in baleen whales remains little explored. Here, we compiled all published stem mysticetes from the Eocene and Oligocene and then mapped the estimated body size onto different phylogenies that suggest distinct evolutionary histories of baleen whales. By assembling all known stem baleen whales, we present three novel findings in early mysticete evolution. Results show that, regardless of different phylogenetic scenarios, large body size (more than 5-m long) evolved multiple times independently in their early evolutionary history. For example, the earliest known aetiocetid ( Fucaia buelli, 33-31 Ma) was small in size, about 2 m, and a later aetiocetid ( Morawanocetus-like animal, 26-23 Ma) can reach 8-m long—almost four times the size of Fucaia buelli—suggesting an independent gigantism in the aetiocetid lineage. In addition, our reconstruction of ancestral state demonstrates that the baleen whales originated from small body size (less than 5 m) rather than large body size as previously acknowledged. Moreover, reconstructing the evolution of body size in stem baleen whales suggests that the initial pulse of mysticete gigantism started at least back to the Paleogene and in turn should help to understand the origin, pattern, and process of the extreme gigantism in the crown baleen whales. This study illustrates that Cope's rule is insufficient to explain the evolution of body size in a group that comprises the largest animals in the history of life, although currently the lack of exact ancestor-descendant relationships remains to fully reveal the evolutionary history of body size.

  13. Breast gigantism induced by D-penicillamine: case report

    Energy Technology Data Exchange (ETDEWEB)

    Cha, Ji Hyeon; Kim, Hak Hee; Kim, Sun Mi; Seo, Myung Hee; Yoon, Hoi Soo [College of Medicine, Ulsan Univ., Seoul (Korea, Republic of)

    2004-03-01

    D-penicillamine, a chelating agent of copper, is the drug of choice for the treatment of Wilson's disease. Breast enlargement is a rare complication arising from its use, and we report a case of breast gigantism which developed after it had been used for ten months to treat this condition. Mammography demonstrated bilaterally enlarged dense breasts; ultrasonography, similarly, demonstrated enlargement, revealing the presence of a mass, shown at biopsy to be benign, in the left one.

  14. Teratoma gigante de mediastino anterior con taponamiento cardiaco.

    OpenAIRE

    López-Carranza, Mario; Cirujano de tórax y cardiovascular. Servicio de Cirugía Torácica y Cardiovascular. Hospital Víctor Lazarte Echegaray EsSalud. Trujillo.; Silva-Rodríguez, Oswaldo; Anátomo-Patólogo. Servicio de Anatomía Patológica. Hospital Víctor Lazarte Echegaray EsSalud. Trujillo.; Carbajal-Vásquez, Américo; Médico Anátomo-Patólogo. Hospital Víctor Lazarte Echegaray EsSalud. Trujillo.

    2012-01-01

    Los teratomas de mediastino, se adhieren y comprimen las estructuras adyacentes y rara vez producen taponamientocardiaco; cuando ocurren se deben a la perforación del pericardio. Se presenta un paciente adulto, con teratomamediastinal gigante, que presentó taponamiento cardiaco sin tener perforación pericárdica, siendo intervenidoquirúrgicamente mediante incisión de Clamshell. Probablemente, constituya el teratoma mediastinal más grandecon taponamiento cardiaco reportado.

  15. Diagnóstico del consumidor de calamar gigante en México y en Sonora

    Directory of Open Access Journals (Sweden)

    Ma. Consepción Luna Raya

    2006-01-01

    con gustos y preferencias del consumidor del calamar gigante, se utilizaron resultados de 1,799 encuestas aplicadas en 14 ciudades del país. Los resultados de las encuestas indican que el consumo del calamar gigante, en frecuencia y cantidad, es bajo; no obstante, se encontró una tendencia hacia el consumo del calamar gigante con valor agregado. En términos generales, existen oportunidades para fomentar el consumo del calamar gigante en los ámbitos nacional y regional.

  16. Modelação da Distribuição Espacial Potencial do Elefante Africano (Loxodonta africana, Blumenbach) na Reserva Especial de Maputo, Moçambique

    OpenAIRE

    Neto, Dora; Ntumi, Cornélio; Barreiros, João P.; Teixeira, Patrícia; Matos, João

    2007-01-01

    V Conferência Nacional de Cartografia e Geodesia, Centro de Congressos do Laboratório Nacional de Engenharia Civil, Lisboa, Portugal, 19 a 20 de Abril de 2007. Nesta comunicação apresenta-se uma abordagem ao problema da modelação da distribuição espacial de espécies selvagens, aplicada ao caso específico do elefante africano. O objectivo é obter empiricamente um mapa da distribuição potencial do Elefante africano na Reserva Especial de Maputo (REM); integrando para esse fim métodos estatís...

  17. Breve historia del cine en el África negra. Cuando el cinc era "africano", pero sólo de nombre.

    OpenAIRE

    Speciale, Alessandra

    1999-01-01

    Speciale, A. (1999). Breve historia del cine en el África negra. Cuando el cinc era "africano", pero sólo de nombre. Nosferatu. Revista de cine. (30):4-19. http://hdl.handle.net/10251/41132. 4 19 30

  18. A institucionalização dos estudos Africanos nos Estados Unidos: advento, consolidação e transformações

    Directory of Open Access Journals (Sweden)

    Roquinaldo Ferreira

    2010-06-01

    Full Text Available O artigo analisa o advento, a consolidação e a transformação dos Estudos Africanos nos Estados Unidos entre a década de 1960 e os dias atuais. O artigo tem como propósito discutir o contexto acadêmico, político e geopolítico que lastreou a criação desse campo de estudos. Para tanto, enfatiza as transformações na sociedade americana nos anos 60, sobretudo o movimento pelos direitos civis dos afro-americanos, assim como o contexto internacional, particularmente a Guerra Fria. Na base da ascensão dos Estudos Africanos estiveram uma política de Estado norte-americana e a participação ativa de agências de fomento privadas, tais como as Fundações Ford e Mellon. A base conceitual dos Estudos Africanos foram os chamados area studies. O artigo argumenta que esse modelo tem sofrido transformações na última década, com a incorporação de estudos sobre a diáspora africana nos chamados Estudos Africanos.

  19. The Oldest Recorded Case of Acromegaly and Gigantism in Iran.

    Science.gov (United States)

    Najjari, Mohsen

    2015-10-01

    Here we commemorate the character and academic authority of Prof. Zabiholah Gorban (1903-2006), the founder of Shiraz medical school. No doubt, in the scope of history of contemporary medicine, he has been efficient and effective. With respect to this fact, his article on a rare case described in Acta anatomica published in Iran in 1966, entitled (Observations on a giant skeleton) is browsed and reviewed. A case named Siah Khan with combined acromegaly and gigantism that appears to have letters to say still after nearly half a century.

  20. Hereditary Gigantism-the biblical giant Goliath and his brothers.

    Science.gov (United States)

    Donnelly, Deirdre E; Morrison, Patrick J

    2014-05-01

    The biblical giant Goliath has an identifiable family tree suggestive of autosomal dominant inheritance. We suggest that he had a hereditary pituitary disorder possibly due to the AIP gene, causing early onset and familial acromegaly or gigantism. We comment on the evidence within the scriptures for his other relatives including a relative with six digits and speculate on possible causes of the six digits. Recognition of a hereditary pituitary disorder in the biblical Goliath and his family sheds additional information on his and other family members' battles with David and his relatives.

  1. Proteus syndrome: A rare cause of gigantic limb

    Directory of Open Access Journals (Sweden)

    Nandini Chakrabarti

    2014-01-01

    Full Text Available A congenital disorder with variable manifestations, including partial gigantism of the hands and feet with hypertrophy of soles, nevi, hemihypertrophy, gynecomastia, macrocephaly and other skull abnormalities, and abdominal lipomatosis. The cause is unknown, although a genetic origin, generally of autosomal-dominant transmission, has been conjectured. Symptoms can be treated, but there is no known cure. We present the case of a young male with grotesque overgrowth of the right lower limb, splenomegaly and multiple nevi. Angiography revealed venous malformation within the limb. The findings are in conformity to the criteria for the Proteus syndrome.

  2. Osteoma gigante en mandíbula. Reporte de Caso.

    OpenAIRE

    Licéaga-Escalera, Carlos; Hospital Juárez de México. México D. F.; Del Bosque-Méndez, Jorge; Hospital Juárez de México. México D. F.; Aldape-Barrios, Beatriz; Facultad de Odontología, Universidad Nacional Autónoma de México. México D. F.; Montoya-Pérez, Luis; Hospital Juárez de México. México D. F., México; Morelos-Patiño, Ethien; Facultad de Odontología, Universidad Nacional Autónoma de México. México D. F.; González-Olmedo, Víctor; Facultad de Odontología, Universidad Nacional Autónoma de México. México D. F.

    2014-01-01

    El osteoma es una neoplasia benigna poco común, que se caracteriza por presentar un crecimiento óseo progresivo, el cual está compuesto por la proliferación bien diferenciada de hueso compacto y/o esponjoso. En el área maxilofacial se presenta con mayor frecuencia en la cara lingual posterior de la mandíbula. Se caracteriza por crecimiento lento y asintomático. El caso describe una paciente de 45 años con un osteoma gigante mandibular de 4 años de evolución tratado quirúrgicamente.

  3. Quistes gigantes infectados en el hígado

    Directory of Open Access Journals (Sweden)

    Dagoberto Calderón Rodríguez

    2015-06-01

    Full Text Available Los quistes hepáticos, tanto en cirugía de adulto como en pediatría, son entidades infrecuentes. Se presenta el caso de una paciente femenina, de 51 años de edad con múltiples quistes gigantes infectados en el hígado, el mayor de ellos de aproximadamente unos 15 - 20 cm. Se le practicó laparotomía de urgencia con exéresis casi total del lóbulo izquierdo del hígado y destechamiento del gran quiste del lóbulo derecho. La paciente ha sido reingresada en dos ocasiones por infección de los quistes hepáticos teniendo resolutividad con tratamiento farmacológico.

  4. Avian-style respiration allowed gigantism in pterosaurs.

    Science.gov (United States)

    Ruxton, Graeme

    2014-08-01

    Powered flight has evolved three times in the vertebrates: in the birds, the bats and the extinct pterosaurs. The largest bats ever known are at least an order of magnitude smaller than the largest members of the other two groups. Recently, it was argued that different scaling of wingbeat frequencies to body mass in birds and bats can help explain why the largest birds are larger than the largest bats. Here, I extend this argument in two ways. Firstly, I suggest that different respiratory physiologies are key to understanding the restriction on bat maximum size compared with birds. Secondly, I argue that a respiratory physiology similar to birds would have been a prerequisite for the gigantism seen in pterosaurs.

  5. Model of UV flashes due to gigantic blue jets

    Energy Technology Data Exchange (ETDEWEB)

    Milikh, G M [University of Maryland, College Park, MD, 20742 (United States); Shneider, M N [Princeton University, Princeton, NJ (United States)], E-mail: milikh@astro.umd.edu, E-mail: shneyder@princeton.edu

    2008-12-07

    Analysis of UV flashes observed by the UV detector on board the 'Tatiana' microsatellite suggests, based on their location, pulse width and energy of the source of the photons, that the flashes were generated by gigantic blue jets (GBJs). Presented in this paper is a numerical model of UV flashes due to a bunch of long streamers which form a leader, a prong such as that observed in a GBJ. Using a previously developed model of upward propagation of a long streamer in the exponential atmosphere the paper describes temporal evolution of the UV flux generated by a bunch of long streamers, in the given spectral range 300-400 nm used by the UV detector on board 'Tatiana'. The model is in agreement with the observations.0.

  6. Granuloma central de células gigantes

    OpenAIRE

    Cava-Vergiú, Carlos-Enrique; Flores Cueto, Walter; Cáceres La Torre, Andreé

    2006-01-01

    Este artículo presenta el caso de una paciente que acudió a la Clínica Especializada en Odontología de la Universidad de San Martín de Porres. La paciente requería la exodoncia de las terceras molares inferiores. Mediante el examen radiológico se observó una imagen radiolúcida con bordes definidos a nivel apical de las piezas 4.7 y 4.8. El diagnóstico presuntivo planteado fue granuloma central de células gigantes. La presentación de esta lesión es muy rara y puede ser de crecimiento ...

  7. Gigantism caused by growth hormone secreting pituitary adenoma.

    Science.gov (United States)

    Rhee, Noorisaem; Jeong, Kumi; Yang, Eun Mi; Kim, Chan Jong

    2014-06-01

    Gigantism indicates excessive secretion of growth hormones (GH) during childhood when open epiphyseal growth plates allow for excessive linear growth. Case one involved a 14.7-year-old boy presented with extreme tall stature. His random serum GH level was 38.4 ng/mL, and failure of GH suppression was noted during an oral glucose tolerance test (OGTT; nadir serum GH, 22.7 ng/mL). Magnetic resonance imaging (MRI) of the brain revealed a 12-mm-sized pituitary adenoma. Transsphenoidal surgery was performed and a pituitary adenoma displaying positive immunohistochemical staining for GH was reported. Pituitary MRI scan was performed 4 months after surgery and showed recurrence/residual tumor. Medical treatment with a long-acting somatostatin analogue for six months was unsuccessful. As a result, secondary surgery was performed. Three months after reoperation, the GH level was 0.2 ng/mL and insulin-like growth factor 1 was 205 ng/mL. Case two involved a 14.9-year-old boy, who was referred to our department for his tall stature. His basal GH level was 9.3 ng/mL, and failure of GH suppression was reported during OGTT (nadir GH, 9.0 ng/mL). Pituitary MRI showed a 6-mm-sized pituitary adenoma. Surgery was done and histopathological examination demonstrated a pituitary adenoma with positive staining for GH. Three months after surgery, the GH level was 0.2 ng/mL and nadir GH during OGTT was less than 0.1 ng/mL. Pituitary MRI scans showed no residual tumor. We present two cases of gigantism caused by a GH-secreting pituitary adenoma with clinical and microscopic findings.

  8. Africanos, tráfico atlántico y cimarrones en las fronteras entre la Guyana Francesa y la América portuguesa, siglo XVIII

    Directory of Open Access Journals (Sweden)

    Flávio dos Santos Gomes

    2011-01-01

    Full Text Available El artículo analiza las experiencias históricas de los cimarrones en un área de fronter atlántica continental entre la Guyana Francesa y la América portuguesa durante el siglo XVII. Las expectativas de los fugitivos africanos se abordan relacionando el movimiento del tráfico atlántico de esclavos-sus variaciones, los volúmenes y las procedencias-. De esta forma se reflexiona sobre los ambientes sociales, étnicos y geográficos que fueron encontrados y recreados en las selvas de estas zonas fronterizas. En un territorio de conflictos, enfrentamientos, disputas coloniales y expectativas de identidades, surgieron espacios de cooperación, donde los colonos europeos y las poblaciones de indígenas y de africanos se reinventaron como culturas y comunidades. Los circuitos demográficos del tráfico atlántico estaban conectados a la experiencia de africanos de diversas procedencias y a la posibilidad de encuentro de estos, a través de las fugas y de las comunidades transétnicas en una zona de frontera transnacional durante la Colonia.

  9. Gigantic Surface Lifetime of an Intrinsic Topological Insulator

    Science.gov (United States)

    Neupane, Madhab; Xu, Su-Yang; Ishida, Yukiaki; Jia, Shuang; Fregoso, Benjamin M.; Liu, Chang; Belopolski, Ilya; Bian, Guang; Alidoust, Nasser; Durakiewicz, Tomasz; Galitski, Victor; Shin, Shik; Cava, Robert J.; Hasan, M. Zahid

    2015-09-01

    The interaction between light and novel two-dimensional electronic states holds promise to realize new fundamental physics and optical devices. Here, we use pump-probe photoemission spectroscopy to study the optically excited Dirac surface states in the bulk-insulating topological insulator Bi2Te2Se and reveal optical properties that are in sharp contrast to those of bulk-metallic topological insulators. We observe a gigantic optical lifetime exceeding 4 μ s (1 μ s =10-6 s ) for the surface states in Bi2Te2Se , whereas the lifetime in most topological insulators, such as Bi2Se3 , has been limited to a few picoseconds (1 ps =10-12 s ). Moreover, we discover a surface photovoltage, a shift of the chemical potential of the Dirac surface states, as large as 100 mV. Our results demonstrate a rare platform to study charge excitation and relaxation in energy and momentum space in a two-dimensional system.

  10. Onfalocele gigante roto. Presentación de un caso

    Directory of Open Access Journals (Sweden)

    Víctor Manuel González Valdez

    2013-10-01

    Full Text Available El onfalocele es uno de los defectos de la pared abdominal. Puede asociarse a otras malformaciones como el ano imperforado, agenesia del colon, extrofia vesical y afecciones cardiovasculares, que a menudo devienen fetos no viables. Se presenta el caso de una recién nacida en Belize, de parto pretérmino (35,3 semanas, con bajo peso (1860 g y primogénita, que requirió cirugía de urgencia a las diez horas de vida por onfalocele gigante roto, asociado a tetralogía de Fallot, hipoglucemia y gran toma del estado general. El objetivo del informe es exponer los procederes diagnósticos y terapéuticos en este tipo de casos. Dado el adecuado diagnóstico prenatal que existe en Cuba, es inusual que los médicos cubanos, salvo aquellos que colaboran en el extranjero, asistan a estos pacientes; por ello, este trabajo puede ser útil en el contexto docente.

  11. LTR retrotransposons contribute to genomic gigantism in plethodontid salamanders.

    Science.gov (United States)

    Sun, Cheng; Shepard, Donald B; Chong, Rebecca A; López Arriaza, José; Hall, Kathryn; Castoe, Todd A; Feschotte, Cédric; Pollock, David D; Mueller, Rachel Lockridge

    2012-01-01

    Among vertebrates, most of the largest genomes are found within the salamanders, a clade of amphibians that includes 613 species. Salamander genome sizes range from ~14 to ~120 Gb. Because genome size is correlated with nucleus and cell sizes, as well as other traits, morphological evolution in salamanders has been profoundly affected by genomic gigantism. However, the molecular mechanisms driving genomic expansion in this clade remain largely unknown. Here, we present the first comparative analysis of transposable element (TE) content in salamanders. Using high-throughput sequencing, we generated genomic shotgun data for six species from the Plethodontidae, the largest family of salamanders. We then developed a pipeline to mine TE sequences from shotgun data in taxa with limited genomic resources, such as salamanders. Our summaries of overall TE abundance and diversity for each species demonstrate that TEs make up a substantial portion of salamander genomes, and that all of the major known types of TEs are represented in salamanders. The most abundant TE superfamilies found in the genomes of our six focal species are similar, despite substantial variation in genome size. However, our results demonstrate a major difference between salamanders and other vertebrates: salamander genomes contain much larger amounts of long terminal repeat (LTR) retrotransposons, primarily Ty3/gypsy elements. Thus, the extreme increase in genome size that occurred in salamanders was likely accompanied by a shift in TE landscape. These results suggest that increased proliferation of LTR retrotransposons was a major molecular mechanism contributing to genomic expansion in salamanders.

  12. 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.

  13. Why might they be giants? Towards an understanding of polar gigantism.

    Science.gov (United States)

    Moran, Amy L; Woods, H Arthur

    2012-06-15

    Beginning with the earliest expeditions to the poles, over 100 years ago, scientists have compiled an impressive list of polar taxa whose body sizes are unusually large. This phenomenon has become known as 'polar gigantism'. In the intervening years, biologists have proposed a multitude of hypotheses to explain polar gigantism. These hypotheses run the gamut from invoking release from physical and physiological constraints, to systematic changes in developmental trajectories, to community-level outcomes of broader ecological and evolutionary processes. Here we review polar gigantism and emphasize two main problems. The first is to determine the true strength and generality of this pattern: how prevalent is polar gigantism across taxonomic units? Despite many published descriptions of polar giants, we still have a poor grasp of whether these species are unusual outliers or represent more systematic shifts in distributions of body size. Indeed, current data indicate that some groups show gigantism at the poles whereas others show nanism. The second problem is to identify underlying mechanisms or processes that could drive taxa, or even just allow them, to evolve especially large body size. The contenders are diverse and no clear winner has yet emerged. Distinguishing among the contenders will require better sampling of taxa in both temperate and polar waters and sustained efforts by comparative physiologists and evolutionary ecologists in a strongly comparative framework.

  14. 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

    2011-02-01

    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

  15. 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

  16. 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

  17. Corticoides intralesionales en lesiones a células gigantes

    Directory of Open Access Journals (Sweden)

    J.P. Crestanello Nese

    2003-12-01

    Full Text Available Desde su descripción original, las lesiones de células gigantes (LCG han sido entidades controvertidas, desde el punto de vista de su origen, de su comportamiento clínico, de sus características radiográficas e histológicas, así como de su tratamiento. Para su tratamiento se han considerado alternativas quirúrgicas y no quirúrgicas. En este trabajo, se presentan tres nuevos casos de LCG, en los cuales se realizó infiltración intralesional con corticoides como una maniobra previa y complementaria a la quirúrgica. Luego de la infiltración, se observó una disminución del tamaño de las lesiones y un cambio en sus características macroscópicas, se trato por enucleación un caso y por remodelación quirúrgica los dos restantes.Giant cell lesions (GCL have been controversial entities since its original description. Its origin, clinical behavior, radiographic and histological features and also its treatment are polemical. The therapeutic possibilities are surgical or non surgical. In this paper, the intralesional infiltration with steroids is presented like a previous and complementary therapy to surgery alone. Three new cases of GCL are presented. All of them were first treated with intralesional infiltration with steroids. After that,a partial remission and a change of the macroscopic characteristics were observed and one of the lesion was then enucleated while for the others two surgical remodelation were necessary to do.

  18. Slow DNA loss in the gigantic genomes of salamanders.

    Science.gov (United States)

    Sun, Cheng; López Arriaza, José R; Mueller, Rachel Lockridge

    2012-01-01

    Evolutionary changes in genome size result from the combined effects of mutation, natural selection, and genetic drift. Insertion and deletion mutations (indels) directly impact genome size by adding or removing sequences. Most species lose more DNA through small indels (i.e., ~1-30 bp) than they gain, which can result in genome reduction over time. Because this rate of DNA loss varies across species, small indel dynamics have been suggested to contribute to genome size evolution. Species with extremely large genomes provide interesting test cases for exploring the link between small indels and genome size; however, most large genomes remain relatively unexplored. Here, we examine rates of DNA loss in the tetrapods with the largest genomes-the salamanders. We used low-coverage genomic shotgun sequence data from four salamander species to examine patterns of insertion, deletion, and substitution in neutrally evolving non-long terminal repeat (LTR) retrotransposon sequences. For comparison, we estimated genome-wide DNA loss rates in non-LTR retrotransposon sequences from five other vertebrate genomes: Anolis carolinensis, Danio rerio, Gallus gallus, Homo sapiens, and Xenopus tropicalis. Our results show that salamanders have significantly lower rates of DNA loss than do other vertebrates. More specifically, salamanders experience lower numbers of deletions relative to insertions, and both deletions and insertions are skewed toward smaller sizes. On the basis of these patterns, we conclude that slow DNA loss contributes to genomic gigantism in salamanders. We also identify candidate molecular mechanisms underlying these differences and suggest that natural variation in indel dynamics provides a unique opportunity to study the basis of genome stability.

  19. Aneurisma gigante parasselar simulando tumor de hipófise

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    Luiz Augusto Casulari Roxo da Motta

    1988-12-01

    Full Text Available Revisamos 7 pacientes com comprometimento da sela turca ao raio X do crânio que apresentavam aneurisma gigante da porção intracavernosa da artéria carótida (6 casos e aneurisma da artéria comunicante anterior (1 caso. As alterações encontradas foram: cefaléia (7/7, oftalmoplegia complexa interessando III, IV e VI nervos cranianos (5/7 e comprometimento do V nervo (4/7, dor ocular (4/7. Outras alterações encontradas foram: sinais meníngeos (2/7, cegueira unilateral (1/7, hemiparesia (1/7 cacosmia (1/7 e quadrantanopsia bitemporal inferior (1/7. Cinco pacientes com aneurisma da porção intracavernosa da artéria carótida beneficiaram-se com a ligadura progressiva da artéria carótida interna a nível cervical; o outro paciente faleceu antes da realização da operação. O paciente com aneurisma da artéria comunicante anterior foi submetido a clipagem do aneurisma, tendo boa evolução. Baseados neste estudo e em concordância com a literatura, concluímos que o diagnóstico diferencial entre aneurisma localizado na região parasselar e outras patologias dessa área freqüentemente apresenta dificuldade. O diagnóstico definitivo requer a realização de angiografia cerebral. O tratamento cirúrgico, por ligadura da carótida interna na região cervical, é benéfico e quase desprovido de complicações.

  20. [Complex ultrasonic diagnosis of large and gigantic non-parasitic cysts of liver].

    Science.gov (United States)

    Kuntsevich, G I; Gavrilin, A V; Vishnevskiĭ, V A; Zhurenkova, T V; Chebysheva, E N; Zhavoronkova, O I; Agafonov, V A

    2007-01-01

    The results of clinical and complex ultrasonic examination of 95 patients with large and gigantic liver non-parasitic cysts (LNC) are analyzed. The morphological examination was performed in all the cases. The mean diameter of large LNC was 105+/-7 mm, of gigantic cysts -- 149+/-33 mm (p<0,05), cyst volume was respectively 600+/-142 and 1721+/-954 ml (p<0,05). Analysis of clinical, ultrasonic and laboratory data allowed to describe three variants of large and gigantic, complicated and non-complicated cysts with 97,9% accuracy. The 3-D US reconstruction permitted to precise the anatomic structure and trace selection during transcutaneous US-assisted treatment.

  1. Sudáfrica: La Clase Obrera y el Congreso Nacional Africano después de la Segunda Guerra Mundial

    OpenAIRE

    Musso, Javier

    2010-01-01

    El tema a trabajar será “Los movimientos nacionalistas y la clase obrera en Sudáfrica”, en el período que va desde la Segunda Guerra Mundial hasta principios de la década del sesenta. Más específicamente se analizará cómo los movimientos nacionalistas sudafricanos, principalmente el A.N.C. (African National Congress), se ligan a un importante número de trabajadores africanos y a los sindicatos que los dirigen; se establecerá cuáles eran sus programas políticos y sus estrategias de luchas cont...

  2. Gigantism and Acromegaly Due to Xq26 Microduplications and GPR101 Mutation

    Science.gov (United States)

    Trivellin, G.; Daly, A.F.; Faucz, F.R.; Yuan, B.; Rostomyan, L.; Larco, D.O.; Schernthaner-Reiter, M.H.; Szarek, E.; Leal, L.F.; Caberg, J.-H.; Castermans, E.; Villa, C.; Dimopoulos, A.; Chittiboina, P.; Xekouki, P.; Shah, N.; Metzger, D.; Lysy, P.A.; Ferrante, E.; Strebkova, N.; Mazerkina, N.; Zatelli, M.C.; Lodish, M.; Horvath, A.; de Alexandre, R. Bertollo; Manning, A.D.; Levy, I.; Keil, M.F.; de la Luz Sierra, M.; Palmeira, L.; Coppieters, W.; Georges, M.; Naves, L.A.; Jamar, M.; Bours, V.; Wu, T.J.; Choong, C.S.; Bertherat, J.; Chanson, P.; Kamenický, P.; Farrell, W.E.; Barlier, A.; Quezado, M.; Bjelobaba, I.; Stojilkovic, S.S.; Wess, J.; Costanzi, S.; Liu, P.; Lupski, J.R.; Beckers, A.; Stratakis, C.A.

    2015-01-01

    BACKGROUND Increased secretion of growth hormone leads to gigantism in children and acromegaly in adults; the genetic causes of gigantism and acromegaly are poorly understood. METHODS We performed clinical and genetic studies of samples obtained from 43 patients with gigantism and then sequenced an implicated gene in samples from 248 patients with acromegaly. RESULTS We observed microduplication on chromosome Xq26.3 in samples from 13 patients with gigantism; of these samples, 4 were obtained from members of two unrelated kindreds, and 9 were from patients with sporadic cases. All the patients had disease onset during early childhood. Of the patients with gigantism who did not carry an Xq26.3 microduplication, none presented before the age of 5 years. Genomic characterization of the Xq26.3 region suggests that the microduplications are generated during chromosome replication and that they contain four protein-coding genes. Only one of these genes, GPR101, which encodes a G-protein–coupled receptor, was overexpressed in patients’ pituitary lesions. We identified a recurrent GPR101 mutation (p.E308D) in 11 of 248 patients with acromegaly, with the mutation found mostly in tumors. When the mutation was transfected into rat GH3 cells, it led to increased release of growth hormone and proliferation of growth hormone–producing cells. CONCLUSIONS We describe a pediatric disorder (which we have termed X-linked acrogigantism [X-LAG]) that is caused by an Xq26.3 genomic duplication and is characterized by early-onset gigantism resulting from an excess of growth hormone. Duplication of GPR101 probably causes X-LAG. We also found a recurrent mutation in GPR101 in some adults with acromegaly. (Funded by the Eunice Kennedy Shriver National Institute of Child Health and Human Development and others.) PMID:25470569

  3. An evolutionary cascade model for sauropod dinosaur gigantism--overview, update and tests.

    Science.gov (United States)

    Sander, P Martin

    2013-01-01

    Sauropod dinosaurs are a group of herbivorous dinosaurs which exceeded all other terrestrial vertebrates in mean and maximal body size. Sauropod dinosaurs were also the most successful and long-lived herbivorous tetrapod clade, but no abiological factors such as global environmental parameters conducive to their gigantism can be identified. These facts justify major efforts by evolutionary biologists and paleontologists to understand sauropods as living animals and to explain their evolutionary success and uniquely gigantic body size. Contributions to this research program have come from many fields and can be synthesized into a biological evolutionary cascade model of sauropod dinosaur gigantism (sauropod gigantism ECM). This review focuses on the sauropod gigantism ECM, providing an updated version based on the contributions to the PLoS ONE sauropod gigantism collection and on other very recent published evidence. The model consist of five separate evolutionary cascades ("Reproduction", "Feeding", "Head and neck", "Avian-style lung", and "Metabolism"). Each cascade starts with observed or inferred basal traits that either may be plesiomorphic or derived at the level of Sauropoda. Each trait confers hypothetical selective advantages which permit the evolution of the next trait. Feedback loops in the ECM consist of selective advantages originating from traits higher in the cascades but affecting lower traits. All cascades end in the trait "Very high body mass". Each cascade is linked to at least one other cascade. Important plesiomorphic traits of sauropod dinosaurs that entered the model were ovipary as well as no mastication of food. Important evolutionary innovations (derived traits) were an avian-style respiratory system and an elevated basal metabolic rate. Comparison with other tetrapod lineages identifies factors limiting body size.

  4. An evolutionary cascade model for sauropod dinosaur gigantism--overview, update and tests.

    Directory of Open Access Journals (Sweden)

    P Martin Sander

    Full Text Available Sauropod dinosaurs are a group of herbivorous dinosaurs which exceeded all other terrestrial vertebrates in mean and maximal body size. Sauropod dinosaurs were also the most successful and long-lived herbivorous tetrapod clade, but no abiological factors such as global environmental parameters conducive to their gigantism can be identified. These facts justify major efforts by evolutionary biologists and paleontologists to understand sauropods as living animals and to explain their evolutionary success and uniquely gigantic body size. Contributions to this research program have come from many fields and can be synthesized into a biological evolutionary cascade model of sauropod dinosaur gigantism (sauropod gigantism ECM. This review focuses on the sauropod gigantism ECM, providing an updated version based on the contributions to the PLoS ONE sauropod gigantism collection and on other very recent published evidence. The model consist of five separate evolutionary cascades ("Reproduction", "Feeding", "Head and neck", "Avian-style lung", and "Metabolism". Each cascade starts with observed or inferred basal traits that either may be plesiomorphic or derived at the level of Sauropoda. Each trait confers hypothetical selective advantages which permit the evolution of the next trait. Feedback loops in the ECM consist of selective advantages originating from traits higher in the cascades but affecting lower traits. All cascades end in the trait "Very high body mass". Each cascade is linked to at least one other cascade. Important plesiomorphic traits of sauropod dinosaurs that entered the model were ovipary as well as no mastication of food. Important evolutionary innovations (derived traits were an avian-style respiratory system and an elevated basal metabolic rate. Comparison with other tetrapod lineages identifies factors limiting body size.

  5. As “Ticas” de “Matema” de um povo africano: Um exercício para sala de aula brasileira.

    Directory of Open Access Journals (Sweden)

    Eliane Costa Santos

    2008-08-01

    Full Text Available Este artigo tem como foco central apontar uma das alternativas para a introdução da cultura africana numa sala de aula de matemática – concorrendo para a transformação deste espaço formal de uma sala de aula, um espaço no qual a cultura está entrelaçada aos saberes escolares por meio da transdisciplinaridade da etnomatemática. A relação que permeia pode ser delineada de como a cultura africana, por meio da representatividade dos fazeres dos teares africanos Kente pode contribuir com os processos de ensino e aprendizagem em uma sala de aula de matemática. As tramas estão por meio do referencial teórico de Stuart Hall sobre cultura e multiculturalismo; D’Ambrósio sobre transdisciplinaridade e etnomatemática; Dennis sobre tecido Kente e os tecelões de Gana com as tecnologias do tear Kente. Para uma compreensão geral localizamos Gana no Continente Africano, citamos o mitos do tear e por fim apresentamos uma proposta de como exercitar uma relação transcultural a partir do saber fazer da cultura Africana em uma sala de aula de matemática no Brasil.

  6. Biopolíticas da depressão nos imigrantes Africanos Biopolitics of depression in African immigrants

    Directory of Open Access Journals (Sweden)

    Chiara Pussetti

    2009-12-01

    Full Text Available Este artigo foca o tema controverso das biopolíticas da depressão em imigrantes, em particular nos originários da África sub-sahariana. Os sintomas depressivos, ligados à ansiedade, são identificados também pela nova e mais importante patologia mental dos imigrantes: a Síndroma de Ulisses, de stress múltiplo e crónico, já definido como "o mal do século vinte e um", e que atinge principalmente os africanos. Não só entre estes imigrantes mas também em África, segundo um estudo conduzido pela OMS, a depressão tornou-se uma das principais patologias mentais. O tratamento farmacológico do sofrimento, entendido como fenómeno orgânico, é considerado o único caminho possível, silenciando os processos históricos, políticos e socioeconómicos que lhe estão na base. A atenção é portanto focada na saúde mental do indivíduo, desviando-a de problemas sociais de difícil resolução, que necessitariam de respostas económicas e políticas.The following article focuses on the controversial issue of the biopolitics of depression in immigrants, especially those originating from Sub-Saharan Africa. Depressive symptoms connected with anxiety are predicted by the new and major mental pathology of the immigrants: the Ulysses Syndrome, a condition of multiple and chronic stress, already defined as the "twenty-first century's affliction", which affects mainly Africans. Depression has become one of the predominant mental disorders not only among African immigrants but in Africa itself, according to research conducted by the WHO. Pharmaceutical treatment of suffering, understood as an organic phenomenon, is considered the only possible route, suppressing the historical, political and socio-economic processes which remain at its foundation. So, the attention placed on the subject's mental health is being diverted from complicated social problems which would require economic and political responses.

  7. Lagarto gigante de La Gomera. Un fósil que vuelve a la vida

    OpenAIRE

    2000-01-01

    La única población conocida cuenta con sólo seis ejemplares. El lagarto gigante de La Gomera se encuentra en una situación bastante más grave que otros vertebrados europeos en peligro de extinción como el lince ibérico, la foca monje o el oso pardo.

  8. 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.

  9. The early ELF signals of the gigantic jets captured by the Taiwan ground observation network

    Science.gov (United States)

    Chen, A. B. C.; Huang, P. H.; Su, H. T.; Hsu, R. R.

    2015-12-01

    The in-cloud ignition process of gigantic jets and blue jets receives attentions and discussions in the past years. The polarity and the position of their breakdown were proposed by Krehbiel et al. [2008] but no concrete observational evidence to support it directly. ELF spectrogram is a good tool to explore the electric activities, but traditional spectrograms are generated by a Fourier transform which obtain the frequency information through an integration operation. However the integration greatly limits the lowest frequency revealed by spectrogram and buries the important transient features. In this study, we applied a new but widely-used method, the Hilbert-Huang transform (HHT), to explore the spectrogram. Instead of the integration, HHT obtains the frequency information by differentiating on the phase angle, and become a powerful tool to reveal the fast frequency variation associated with transient luminous events. More than 100 transient luminous events including 25 gigantic jets observed by Taiwan ground optical observation network were analyzed. The results indicate that approximately 70% of gigantic jets can identify a rapid frequency variation in the interval of 300-600 milliseconds before main surge discharge, and this early feature can not find a clear corresponding amplitude variation in its sferic. Since this early signal can not be identified from the traditional Fourier spectrogram, but clear in-cloud lightning was registered correspondingly by the ground optical observation. In contrast to gigantic jets, this feature of early frequency change can be seen only in less than 30% of sprites and elves. These observational evidences are able to provide new constraints on the early discharge process of gigantic jets in clouds.

  10. La historia blanqueada: representaciones de los africanos y sus descendientes en Antioquia a través de la obra de Tomás Carrasquilla

    Directory of Open Access Journals (Sweden)

    Lina del Mar Moreno Tovar

    2010-06-01

    Full Text Available After independence was achieved and throughout the 19th century, political, economical and cultural Colombian elites invented a model of nation based on the idea that highlands and white race were progress exclusive raw material, as though; based on racial and geographical attributions a regional hierarchy was built, and this allowed the configuration of local identities defined by this model. Meanwhile, besides Antioquia had an important presence of African and African descendant population since colonial times, from different enunciation places and turning over the colonization entrepreneurship of the 19th century as a the foundational myth, representations that showed Antioquia and its inhabitants as a successful correlate of the relationship between Andean highlands and white race started to be created, opposing to the negative valuation over lowlands and black population. This article, on one side, examines which were the representational mechanisms of Africans and their descendants in Antioquia through Tomas Carrasquilla literary work, and, on the other, wants to make evident that those creations marginalized the contributions done by Africans and their descendants to Antioquean history.//Tras el logro de la independencia y a lo largo de todo el siglo xix, las élites políticas, económicas y culturales colombianas trazaron un modelo de nación basado en la idea de que las tierras altas y la raza blanca eran materias primas privilegiadas del progreso; así, con base en atribuciones raciales y geográficas se construyó una jerarquía regional que dio lugar a la configuración de identidades locales definidas en función de ese modelo. Entretanto, aun a pesar de que Antioquia contaba con una importante presencia de africanos y afrodescendientes desde la época colonial, desde diversos lugares de enunciación y acudiendo a la empresa colonizadora del siglo xix como mito fundacional, se empezaron a elaborar representaciones que mostraban a

  11. 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.

  12. Efficacy, safety, and pharmacokinetics of sustained-release lanreotide (lanreotide Autogel) in Japanese patients with acromegaly or pituitary gigantism.

    Science.gov (United States)

    Shimatsu, Akira; Teramoto, Akira; Hizuka, Naomi; Kitai, Kazuo; Ramis, Joaquim; Chihara, Kazuo

    2013-01-01

    The somatostatin analog lanreotide Autogel has proven to be efficacious for treating acromegaly in international studies and in clinical practices around the world. However, its efficacy in Japanese patients has not been extensively evaluated. We examined the dose-response relationship and long-term efficacy and safety in Japanese patients with acromegaly or pituitary gigantism. In an open-label, parallel-group, dose-response study, 32 patients (29 with acromegaly, 3 with pituitary gigantism) received 5 injections of 60, 90, or 120 mg of lanreotide Autogel over 24 weeks. Four weeks after the first injection, 41% of patients achieved serum GH level of gigantism) received lanreotide Autogel once every 4 weeks for a total of 13 injections. Dosing was initiated with 90 mg and adjusted according to clinical responses at Weeks 16 and/or 32. At Week 52, 47% of patients had serum GH levels of gigantism.

  13. O Cinema brasileiro e as identidades híbridas em Ruy Guerra: O olhar latino-africano de um cidadão da vida

    Directory of Open Access Journals (Sweden)

    Anderson Lopes da Silva

    2014-07-01

    Full Text Available • Resumo: O artigo tem o objetivo de apresentar a vida e a obra do cineasta Ruy Guerra a partir da perspectiva identitária, mais especificamente, das identidades híbridas. Como aporte reflexivo serão usadas as concepções de hibridização para Stuart Hall e Homi Bhabha, teóricos dos Estudos Culturais. O trabalho ainda apresenta a presença do diretor no Cinema Novo brasileiro. Por fim, utilizando-se da própria definição de Ruy Guerra, chega-se a conclusão de que sua identidade é híbrida por ser ele um latino-africano sem noção de nacionalidade como espaço fixo, mas sim um cidadão da vida. Uma vida nômade.

  14. Busca de princípios para uma atuação a partir de estudos sobre o griots africanos e os jograis medievais europeus

    OpenAIRE

    2011-01-01

    Esta pesquisa parte de algumas experiências cênicas no trabalho com canções, poemas e histórias, que despertaram questionamentos sobre um tipo de atuação que integra aspectos do ofício do ator, do músico, do contador ou cantador de histórias e do recitador de poemas. Tais questionamentos levaram-me a pesquisar determinados princípios éticos e estéticos presentes na atuação dos griots africanos e dos jograis medievais europeus, dentre os quais destaco: um fazer artístico mais autônomo e menos ...

  15. Fábrica de imagens : representação do continente africano na produção de intelectuais brasileiros e colombianos (1870-1930)

    OpenAIRE

    2015-01-01

    Esta tese discute o lugar da África na produção intelectual brasileira e colombiana na transição do século XIX ao século XX. Enfocando trajetórias intelectuais específicas em ambos os países, analisa o trânsito de ideias e imagens sobre o continente africano através do tempo apontando para as singularidades, ritmos próprios e semelhanças que a construção e a reinvenção destas representações comportaram em cada um destes espaços. Em diálogo com os processo de construção de identidades nacionai...

  16. Al otro lado del Atlántico. Los africanos y sus descencientes en Argentina /Across the Atlantic. Africans and their Descendants in Argentina

    Directory of Open Access Journals (Sweden)

    Diego Buffa

    2014-12-01

    Full Text Available El propósito de este trabajo es hacer un recorrido histórico, rastreando la presencia africana y afrodescendiente en el actual territorio argentino, desde el período colonial hasta la actualidad. Centraremos nuestro análisis en los momentos más significativos de su llegada, observando ciertos parámetros que las caracterizan y, al mismo tiempo, identificaremos patrones de marginación o exclusión social de los migrantes africanos y sus descendientes.The purpose of this work is to make a historical journey, tracing presence of Africans and Afro-descendants in the Argentinean territory, from the colonial period to the present. We focus our analysis on the most significant moments of their arrivals, observing certain parameters that characterize them and at the same time, identifying patterns of marginalization and social exclusion of African migrants and their descendants.

  17. Ecofisiologia de plantas jovens de mogno-africano submetidas a deficit hídrico e reidratação

    Directory of Open Access Journals (Sweden)

    Marcos Paulo Ferreira de Albuquerque

    2013-01-01

    Full Text Available O objetivo deste trabalho foi avaliar a capacidade de plantas jovens de mogno-africano (Khaya ivorensis em recuperar seu status hídrico e trocas gasosas após período de deficit hídrico. Plantas com aproximadamente 315 dias, irrigadas (controle e não irrigadas, foram avaliadas aos 14 dias da suspensão da irrigação e após um, três e sete dias da retomada da irrigação (reidratação. No dia 14, o potencial hídrico foliar de antemanhã (Ψam das plantas estressadas foi reduzido a -2,66 MPa. Com a restrição hídrica, foram observadas reduções significativas no conteúdo relativo de água na antemanhã (redução de 32%, na taxa de assimilação líquida de CO2 (90%, na condutância estomática (95%, na transpiração (93% e na razão entre concentração intercelular e ambiental de CO2 (37%. Durante a reidratação, o status hídrico das plantas estressadas foi restabelecido após três dias. As trocas gasosas também se restabeleceram, mas de forma mais lenta que o status hídrico. Sob deficit hídrico, a concentração de prolina aumentou e a de carboidratos solúveis totais diminuiu. Plantas jovens de mogno-africano são tolerantes ao deficit hídrico moderado.

  18. 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

  19. 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.

  20. 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

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

    Energy Technology Data Exchange (ETDEWEB)

    Barth, P.G.; Vlasveld, L.; Valk, J.

    1980-08-01

    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.

  2. Increased Population Risk of AIP‐Related Acromegaly and Gigantism in Ireland

    Science.gov (United States)

    Radian, Serban; Diekmann, Yoan; Gabrovska, Plamena; Holland, Brendan; Bradley, Lisa; Wallace, Helen; Stals, Karen; Bussell, Anna‐Marie; McGurren, Karen; Cuesta, Martin; Ryan, Anthony W.; Herincs, Maria; Hernández‐Ramírez, Laura C.; Holland, Aidan; Samuels, Jade; Aflorei, Elena Daniela; Barry, Sayka; Dénes, Judit; Pernicova, Ida; Stiles, Craig E.; Trivellin, Giampaolo; McCloskey, Ronan; Ajzensztejn, Michal; Abid, Noina; Akker, Scott A.; Mercado, Moises; Cohen, Mark; Thakker, Rajesh V.; Baldeweg, Stephanie; Barkan, Ariel; Musat, Madalina; Levy, Miles; Orme, Stephen M.; Unterländer, Martina; Burger, Joachim; Kumar, Ajith V.; Ellard, Sian; McPartlin, Joseph; McManus, Ross; Linden, Gerard J.; Atkinson, Brew; Balding, David J.; Agha, Amar; Thompson, Chris J.; Hunter, Steven J.; Thomas, Mark G.; Morrison, Patrick J.

    2016-01-01

    ABSTRACT The aryl hydrocarbon receptor interacting protein (AIP) founder mutation R304* (or p.R304*; NM_003977.3:c.910C>T, p.Arg304Ter) identified in Northern Ireland (NI) predisposes to acromegaly/gigantism; its population health impact remains unexplored. We measured R304* carrier frequency in 936 Mid Ulster, 1,000 Greater Belfast (both in NI) and 2,094 Republic of Ireland (ROI) volunteers and in 116 NI or ROI acromegaly/gigantism patients. Carrier frequencies were 0.0064 in Mid Ulster (95%CI = 0.0027–0.013; P = 0.0005 vs. ROI), 0.001 in Greater Belfast (0.00011–0.0047) and zero in ROI (0–0.0014). R304* prevalence was elevated in acromegaly/gigantism patients in NI (11/87, 12.6%, P < 0.05), but not in ROI (2/29, 6.8%) versus non‐Irish patients (0–2.41%). Haploblock conservation supported a common ancestor for all the 18 identified Irish pedigrees (81 carriers, 30 affected). Time to most recent common ancestor (tMRCA) was 2550 (1,275–5,000) years. tMRCA‐based simulations predicted 432 (90–5,175) current carriers, including 86 affected (18–1,035) for 20% penetrance. In conclusion, R304* is frequent in Mid Ulster, resulting in numerous acromegaly/gigantism cases. tMRCA is consistent with historical/folklore accounts of Irish giants. Forward simulations predict many undetected carriers; geographically targeted population screening improves asymptomatic carrier identification, complementing clinical testing of patients/relatives. We generated disease awareness locally, necessary for early diagnosis and improved outcomes of AIP‐related disease. PMID:27650164

  3. Cerebral gigantism associated with jaw cyst basal cell naevoid syndrome in two families.

    Science.gov (United States)

    Cramer, H; Niederdellmann, H

    1983-01-01

    We report 9 subjects from 2 families with the syndrome of cerebral gigantism, seven of the patients also had jaw cyst basal cell naevoid syndrome. Neurological, radiological, somatic and biochemical features of this hitherto unreported association are described. Neurological symptoms included mild hydrocephalus, ventricular malformation, cerebellar syndrome, intracranial calcification, oculomotor disturbances, EEG abnormalities and rarely, mild peripheral nervous disorders. A disturbance of calcium metabolism appears to be a prominent feature of the genetically determined nonprogressive syndrome.

  4. 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.

  5. Starvation reveals the cause of infection-induced castration and gigantism.

    Science.gov (United States)

    Cressler, Clayton E; Nelson, William A; Day, Troy; McCauley, Edward

    2014-10-01

    Parasites often induce life-history changes in their hosts. In many cases, these infection-induced life-history changes are driven by changes in the pattern of energy allocation and utilization within the host. Because these processes will affect both host and parasite fitness, it can be challenging to determine who benefits from them. Determining the causes and consequences of infection-induced life-history changes requires the ability to experimentally manipulate life history and a framework for connecting life history to host and parasite fitness. Here, we combine a novel starvation manipulation with energy budget models to provide new insights into castration and gigantism in the Daphnia magna-Pasteuria ramosa host-parasite system. Our results show that starvation primarily affects investment in reproduction, and increasing starvation stress reduces gigantism and parasite fitness without affecting castration. These results are consistent with an energetic structure where the parasite uses growth energy as a resource. This finding gives us new understanding of the role of castration and gigantism in this system, and how life-history variation will affect infection outcome and epidemiological dynamics. The approach of combining targeted life-history manipulations with energy budget models can be adapted to understand life-history changes in other disease systems.

  6. The triangulation of the gigantic jets observed by the optical observation network in Taiwan

    Science.gov (United States)

    Chen, Alfred B.; Huang, Chien-Fong; Peng, Kang-Ming; Su, Han-Tzong; Hsu, Rue-Ron

    2015-04-01

    The optical triangulation of sprites and elves by the multiple sites has been done in the past decades, but the similar observation on gigantic jets has never been reported yet. A ground optical observation network consisting of four stations at Kimen, Penghu, Tainan, and Taitung (from west to east) has been established in Taiwan since 2012. Each station equipped with two sets of Watec low-light sensitivity cameras, and the elevation and azimuth of the observation can be fully remote controlled to point toward the on-going convection system in the vicinity of Taiwan. In summer 2014, more than 6 gigantic jets were captured by at least two stations successfully. The triangulation and ULF sferics of these interesting events provides an excellent chance to explore the spatial and temporal evolution of the jets in different phases. In this presentation, this ground observation network will be introduced, the detail evolution of the recorded gigantic jets is presented. The preliminary result implies that the jets may not pop from the cloudtop straightforwardly, and some twists occur during the propagation of the jets. A more complicated analysis of the tomography for the advanced triangulation will be mentioned, too.

  7. Current Opinion in Endocrinology, Diabetes, and Obesity “Pituitary gigantism: Update on Molecular Biology and Management”

    Science.gov (United States)

    Lodish, Maya B.; Trivellin, Giampaolo; Stratakis, Constantine A.

    2016-01-01

    Purpose of review To provide an update on the mechanisms leading to pituitary gigantism, as well as to familiarize the practitioner with the implication of these genetic findings on treatment decisions. Recent findings Prior studies have identified gigantism as a feature of a number of monogenic disorders, including mutations in the aryl hydrocarbon receptor interacting protein (AIP) gene, multiple endocrine neoplasia types 1 and 4, McCune Albright Syndrome, Carney Complex, and the paraganglioma, pheochromocytoma and pituitary adenoma association (3PA) due to succinate dehydrogenase defects. We recently described a previously uncharacterized form of early-onset pediatric gigantism caused by microduplications on chromosome Xq26.3 and we termed it X-LAG (X-linked acrogigantism). The age of onset of increased growth in X-LAG is significantly younger than other pituitary gigantism cases, and control of growth hormone excess is particularly challenging. Summary Knowledge of the molecular defects that underlie pituitary tumorigenesis is crucial for patient care as they guide early intervention, screening for associated conditions, genetic counseling, surgical approach (partial or total hypophysectomy), and choice of medical management. Recently described microduplications of Xq26.3 account for more than 80% of the cases of early-onset pediatric gigantism. Early recognition of X-LAG may improve outcomes, as successful control of growth hormone excess requires extensive anterior pituitary resection and are difficult to manage with medical therapy alone. PMID:26574647

  8. Liderazgo femenino. Un análisis de las diferencias de género en la formación y desarrollo de asociaciones de inmigrantes africanos

    Directory of Open Access Journals (Sweden)

    Molina Luque, Fidel

    2013-06-01

    Full Text Available This study describes, analyses and compares manifestations of female leadership in associations of African immigrants, examining such factors as work objectives, themes and forms, organisation and institutionalisation. It was based on an in-depth analysis of ten life hi stories, starting from the hypothesis that there is a clearly gender-based difference between the objectives of African associations comprised of men and of women and that this difference stems from the basic inequality of the respective social statuses of men and women and, more specifically, from gender-related culture. The results obtained suggest the existence of “strong” (neither submissive nor ignorant female immigrants with the capacity to lead associations, but whose character is not the result of any supposedly specifically “feminine” characteristics, but rather to a process of early (adolescent learning, academic success and relatively high social origin, all of which help to forge a certain rebellious streak and to lead certain women to assume positions of authority. Whatever the case, it was not possible to observe any relevant differences between female and male leadership; both tend to be characterised by a certain “charisma” and the presence of personal qualities that were the result of interactions within specific social contexts.En el presente estudio se describen, analizan y comparan las manifestaciones del liderazgo femenino en las asociaciones de inmigrantes africanos: sus objetivos de trabajo, temáticas y formas, organización e institucionalización. Para ello se analizan en profundidad diez historias de vida, partiendo de la hipótesis de la existencia de una clara diferenciación de objetivos entre las asociaciones de hombres y mujeres africanos derivados de la desigualdad básica de las posiciones sociales entre hombres y mujeres, y muy especialmente, de las culturas de género. Los resultados obtenidos sugieren que existen mujeres

  9. Relaciones entre africanos e indígenas en Chiapas y Guatemala Relations between africans and indigenous peoples in Chiapas and Guatemala

    Directory of Open Access Journals (Sweden)

    Juan Pablo Peña Vicenteño

    2009-01-01

    Full Text Available La presencia africana en la Audiencia de Guatemala en los siglos XVI y XVII ha sido poco estudiada. Por lo tanto, en este trabajo se analizarán los diferentes mecanismos que utilizó la corona española para el traslado de esclavos, como las licencias y el sistema de asientos. Asimismo, se estudiará la inserción de los africanos en la sociedad colonial y principalmente su interrelación con la población indígena nativa de la región. En los documentos coloniales referentes a matrimonios, podemos observar los procesos de "interculturalidad" en los cuales el esclavo africano intercambió elementos culturales que influyeron en la música. Tal fue el caso de la marimba, instrumento que dio identidad a la región de estudio. Por último, se pretende observar, a través del análisis de las narrativas indígenas originadas en la década de los 90' del siglo XX, cómo en la cosmovisión indígena aún continúa la presencia de los "negros".The presence of African population at the "Audiencia" of Guatemala between 16th and 17th centuries has been vaguely studied by historians and other social scientists. This paper emphasizes on several ways -as slave trade licenses and 'asientos'- that were used by the Spanish Crown for slave trade and transportation. In addition, this article analyses the integration of African slaves and their descendents in Colonial Mexican society, especially their mixture with indigenous population. In Colonial records, as marriages and baptisms files, it is possibly to regard a profound influence on inter-cultural processes between African people and the rest of the Colonial casts. As an example, the musical instrument 'marimba' that brought cultural identity to Guatemala 'Audiencia'. Finally, in this article we will analyze the indigenous literature of the last decade of the 20th century, in which is clear the evidence of "negro" agents in indigenous cosmology.

  10. La representación televisiva de los inmigrantes africanos: invisibilidad, desconocimiento y precariedad. The television representation of African immigrants: invisibility, ignorance and uncertainty

    Directory of Open Access Journals (Sweden)

    Vanessa Rodríguez Breijo

    Full Text Available ResumenLa imagen televisiva de los inmigrantes africanos se caracteriza por su aparición poco frecuente, la falta de información sobre ellos, la precariedad de sus condiciones de trabajo, su tendencia a desempeñar el rol de víctimas y una mayor incidencia de transgresiones a la ley respecto a otros grupos. Estos datos proceden del estudio de la representación de los inmigrantes en este medio. La técnica utilizada fue el análisis de contenido de una muestra de la programación con mayor audiencia, en la que se incluyeron todos los géneros televisivos. Los resultados correspondientes a los africanos los vincularon escasamente con el mundo laboral, lo que no contribuye a que los nativos los valoren como ciudadanos útiles y necesarios. No se promovió el interés por el conocimiento de este colectivo, ni la noción de que ya forman parte de la sociedad; debido a su poca visibilidad y a los exiguos datos ofrecidos sobre ellos. En lugar de resaltar sus aportes, se enfatizó su recurrencia a ayudas gubernamentales y su dependencia, transmitiendo una idea de competencia por los recursos y de normalidad de su situación de desigualdad. Finalmente, sus más frecuentes acciones ilegales podrían estar justificando esas peores condiciones de integración, liberando de responsabilidad a la sociedad receptora.AbstractThe television image of African immigrants is characterized by its infrequent occurrence, the lack of information about them, poor working conditions, their tendency to play the role of victims and a higher incidence of violations of the law regarding other groups. This data comes from examining the representation of immigrants in this media. The technique used was content analysis of a sample of the most watched programs, which included all television genres. The results for the Africans pointed a weak link with the workplace, which doesn't contribute to their valuing as necessary and useful citizens. The interest in knowledge of this

  11. Clinical and genetic characterization of pituitary gigantism: an international collaborative study in 208 patients.

    Science.gov (United States)

    Rostomyan, Liliya; Daly, Adrian F; Petrossians, Patrick; Nachev, Emil; Lila, Anurag R; Lecoq, Anne-Lise; Lecumberri, Beatriz; Trivellin, Giampaolo; Salvatori, Roberto; Moraitis, Andreas G; Holdaway, Ian; Kranenburg-van Klaveren, Dianne J; Chiara Zatelli, Maria; Palacios, Nuria; Nozieres, Cecile; Zacharin, Margaret; Ebeling, Tapani; Ojaniemi, Marja; Rozhinskaya, Liudmila; Verrua, Elisa; Jaffrain-Rea, Marie-Lise; Filipponi, Silvia; Gusakova, Daria; Pronin, Vyacheslav; Bertherat, Jerome; Belaya, Zhanna; Ilovayskaya, Irena; Sahnoun-Fathallah, Mona; Sievers, Caroline; Stalla, Gunter K; Castermans, Emilie; Caberg, Jean-Hubert; Sorkina, Ekaterina; Auriemma, Renata Simona; Mittal, Sachin; Kareva, Maria; Lysy, Philippe A; Emy, Philippe; De Menis, Ernesto; Choong, Catherine S; Mantovani, Giovanna; Bours, Vincent; De Herder, Wouter; Brue, Thierry; Barlier, Anne; Neggers, Sebastian J C M M; Zacharieva, Sabina; Chanson, Philippe; Shah, Nalini Samir; Stratakis, Constantine A; Naves, Luciana A; Beckers, Albert

    2015-10-01

    Despite being a classical growth disorder, pituitary gigantism has not been studied previously in a standardized way. We performed a retrospective, multicenter, international study to characterize a large series of pituitary gigantism patients. We included 208 patients (163 males; 78.4%) with growth hormone excess and a current/previous abnormal growth velocity for age or final height >2 s.d. above country normal means. The median onset of rapid growth was 13 years and occurred significantly earlier in females than in males; pituitary adenomas were diagnosed earlier in females than males (15.8 vs 21.5 years respectively). Adenomas were ≥10 mm (i.e., macroadenomas) in 84%, of which extrasellar extension occurred in 77% and invasion in 54%. GH/IGF1 control was achieved in 39% during long-term follow-up. Final height was greater in younger onset patients, with larger tumors and higher GH levels. Later disease control was associated with a greater difference from mid-parental height (r=0.23, P=0.02). AIP mutations occurred in 29%; microduplication at Xq26.3 - X-linked acrogigantism (X-LAG) - occurred in two familial isolated pituitary adenoma kindreds and in ten sporadic patients. Tumor size was not different in X-LAG, AIP mutated and genetically negative patient groups. AIP-mutated and X-LAG patients were significantly younger at onset and diagnosis, but disease control was worse in genetically negative cases. Pituitary gigantism patients are characterized by male predominance and large tumors that are difficult to control. Treatment delay increases final height and symptom burden. AIP mutations and X-LAG explain many cases, but no genetic etiology is seen in >50% of cases.

  12. Vínculos observacionais para o processo-S em estrelas gigantes de Bário

    Science.gov (United States)

    Smiljanic, R. H. S.; Porto de Mello, G. F.; da Silva, L.

    2003-08-01

    Estrelas de bário são gigantes vermelhas de tipo GK que apresentam excessos atmosféricos dos elementos do processo-s. Tais excessos são esperados em estrelas na fase de pulsos térmicos do AGB (TP-AGB). As estrelas de bário são, no entanto, menos massivas e menos luminosas que as estrelas do AGB, assim, não poderiam ter se auto-enriquecido. Seu enriquecimento teria origem em uma estrela companheira, inicialmente mais massiva, que evolui pelo TP-AGB, se auto-enriquece com os elementos do processo-s e transfere material contaminado para a atmosfera da atual estrela de bário. A companheira evolui então para anã branca deixando de ser observada diretamente. As estrelas de bário são, portanto, úteis como testes observacionais para teorias de nucleossíntese pelo processo-s, convecção e perda de massa. Análises detalhadas de abundância com dados de alta qualidade para estes objetos são ainda escassas na literatura. Neste trabalho construímos modelos de atmosferas e, procedendo a uma análise diferencial, determinamos parâmetros atmosféricos e evolutivos de uma amostra de dez gigantes de bário e quatro normais. Determinamos seus padrões de abundância para Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Sr, Y, Zr, Ba, La, Ce, Nd, Sm, Eu e Gd, concluindo que algumas estrelas classificadas na literatura como gigantes de bário são na verdade gigantes normais. Comparamos dois padrões médios de abundância, para estrelas com grandes excessos e estrelas com excessos moderados, com modelos teóricos de enriquecimento pelo processo-s. Os dois grupos de estrelas são ajustados pelos mesmos parâmetros de exposição de nêutrons. Tal resultado sugere que a ocorrência do fenômeno de bário com diferentes intensidades não se deve a diferentes exposições de nêutrons. Discutimos ainda efeitos nucleossintéticos, ligados ao processo-s, sugeridos na literatura para os elementos Cu, Mn, V e Sc.

  13. 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.

  14. Bariones y gravitones gigantes en el marco de la correspondencia AdS/CFT

    OpenAIRE

    Picos Sol, Marco Antonio

    2016-01-01

    Se construyen y analizan dos tipos de configuraciones que pueden construirse en el espacio dual a la teoría ABJM (en la dualidad AdS_4/CFT_3): gravitones gigantes y vértices bariónicos. Ambas configuraciones hacen uso de la posibilidad de enrrollar branas en ciclos topológicamente no triviales en el lado gravitatorio de la dualidad. Los vértices bariónicos están formados por branas enrrolladas atadas a cuerdas que se extienden hasta la frontera de AdS, y son vistos desde el lado gauge com...

  15. Velocidades radiales de estrellas gigantes rojas y blue stragglers en cúmulos abiertos

    Science.gov (United States)

    González, J. F.; Lapasset, E.

    Se presentan mediciones de las estrellas más brillantes en los campos de los cúmulos abiertos NGC 6530, NGC 2516, NGC 3114, Cr 223 y NGC 2437. Mediante correlaciones cruzadas se obtiene la velocidad de unas 25 gigantes rojas con el objeto de derivar la velocidad media de cada asociación. En base a los espectros obtenidos de los blue stragglers se discuten sus principales características y su probabilidad de pertenencia. Finalmente, se presentan las observaciones para cinco nuevas binarias espectroscópicas detectadas.

  16. Gigantic terahertz magnetochromism via electromagnons in hexaferrite magnet Ba$_2$Mg$_2$Fe$_{12}$O$_{22}$

    OpenAIRE

    Kida, N.; Kumakura, S.; Ishiwata, S.; Taguchi, Y.; Tokura, Y.

    2011-01-01

    Effects of temperature (6--225 K) and magnetic field (0--7 T) on the low-energy (1.2--5 meV) electrodynamics of the electromagnon, the magnetic resonance driven by the light electric field, have been investigated for a hexaferrite magnet Ba$_2$Mg$_2$Fe$_{12}$O$_{22}$ by using terahertz time-domain spectroscopy. We find the gigantic terahertz magnetochromism via electromagnons; the magnetochromic change, as defined by the difference of the absorption intensity with and without magnetic field, ...

  17. 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.

  18. Espejo cultural africano: imágenes de los reinos del Congo y Angola en la Costa Caribe del reino de Nueva Granada

    Directory of Open Access Journals (Sweden)

    Andrea Guerrero Mosquera

    2014-01-01

    Full Text Available Esta investigación pretendió a nalizar los escritos sobre África realizados durante el siglo XVII, con el fin de adentrarse a los imaginarios que se plasmaron acerca de las culturas de los reinos del Congo y Angola . Para el caso particula r de esta investigación , se usaron los textos de los capuchinos Giovanni António Cavazzi y Anto nio de Teruel . Estos textos son discursos escritos desde una perspectiva de lo observado y bajo el amparo de un discurso histórico - antropológico del africano, una imagen eurocentrista y católica que permeó tanto en Europa como en la s Indias. Con estos textos se intentó un acer camiento a los Black Atlantic Studies con lo que se logró a partir de las imágenes que se interpretar on , realizar una confrontación con la herencia cultural que se manifestaba en los escritos de la época y establecer los imaginar ios que llegaron desde África al reino de Nueva Granada .

  19. Pituitary gigantism presenting with depressive mood disorder and diabetic ketoacidosis in an Asian adolescent.

    Science.gov (United States)

    Kuo, Sheng-Fong; Chuang, Wen-Yu; Ng, Sohching; Chen, Chih-Hung; Chang, Chen-Nen; Chou, Chi-Hsiang; Weng, Wei-Chieh; Yeh, Chih-Hua; Lin, Jen-Der

    2013-01-01

    Hyperglycemia is seldom described in young patients with pituitary gigantism. Here, we describe the case of a 17-year-old Taiwanese boy who developed depressive mood disorder and diabetic ketoacidosis (DKA) at the presentation of pituitary gigantism. The boy complained of lethargy and dysphoric mood in June 2008. He presented at the emergency department with epigastralgia and dyspnea in January 2009. Results of laboratory tests suggested type 1 diabetes mellitus with DKA. However, serum C-peptide level was normal on follow-up. Although he had no obvious features of acral enlargement, a high level of insulin-like growth factor 1 was detected, and a 75 g oral glucose suppression test showed no suppression of serum growth hormone levels. A pituitary macroadenoma was found on subsequent magnetic resonance imaging. The pituitary adenoma was surgically removed, followed by gamma-knife radiosurgery, and Sandostatin long-acting release treatment. He was then administered metformin, 500 mg twice daily, and to date, his serum glycohemoglobin has been <7%.

  20. Are sick individuals weak competitors? Competitive ability of snails parasitized by a gigantism-inducing trematode.

    Directory of Open Access Journals (Sweden)

    Otto Seppälä

    Full Text Available Parasitized individuals are often expected to be poor competitors because they are weakened by infections. Many trematode species, however, although extensively exploiting their mollusc hosts, also induce gigantism (increased host size by diverting host resources towards growth instead of reproduction. In such systems, alternatively to reduced competitive ability due to negative effects of parasitism on host performance, larger size could allow more efficient resource acquisition and thus increase the relative competitive ability of host individuals. We addressed this hypothesis by testing the effect of a trematode parasite Diplostomum pseudospathaceum on the competitive ability of its snail host Lymnaea stagnalis. We experimentally examined the growth of snails kept in pairs in relation to their infection status and intensity of resource competition (i.e. food availability. We found that parasitized snails grew faster and their reproduction was reduced compared to unparasitized individuals indicating parasite-induced gigantism. However, growth of the snails was faster when competing with parasitized individuals compared to unparasitized snails indicating reduced competitive ability due to parasitism. The latter effect, however, was relatively weak suggesting that the effects of the parasite on snail physiology may partly override each other in determining competitive ability.

  1. A novel neonatal Michelin Tire Baby Syndrome with craniosynostosis and gigantism

    Directory of Open Access Journals (Sweden)

    Ižbrahim Akalin

    2014-03-01

    Full Text Available     Michelin Tire Baby Syndrome is a rare congenital disorder and characterized clinically well defined multiple ring shaped skin creases. Our patient was born to onconsanguineous healthy parents as the third child of the family at 40 weeks of uneventful gestation with distinctive skin creases and gigantism. He was 4,950 g in weight (>90 percentile, 57.5 cm in length (>90 percentile, and had a head circumferences of 39.5 cm (>90 percentile at birth. The physical examination showed a rough face, brachicephaly and craniosynostosis. His vital and laboratory findings were within normal limits at birth. Cranial and renal ultrasonograms, Xray graphics and cytogenetic analyses were normal. Echocardiography revealed small patent ductus arteriosis and patent foramen ovale. In this report, we present a new case of Michelin Tire Baby Syndrome who is the first neonate associated with severe gigantism and craniosynostosis, in the literature. A review of the related literature has also been presented.

  2. Are sick individuals weak competitors? Competitive ability of snails parasitized by a gigantism-inducing trematode.

    Science.gov (United States)

    Seppälä, Otto; Karvonen, Anssi; Kuosa, Marja; Haataja, Maarit; Jokela, Jukka

    2013-01-01

    Parasitized individuals are often expected to be poor competitors because they are weakened by infections. Many trematode species, however, although extensively exploiting their mollusc hosts, also induce gigantism (increased host size) by diverting host resources towards growth instead of reproduction. In such systems, alternatively to reduced competitive ability due to negative effects of parasitism on host performance, larger size could allow more efficient resource acquisition and thus increase the relative competitive ability of host individuals. We addressed this hypothesis by testing the effect of a trematode parasite Diplostomum pseudospathaceum on the competitive ability of its snail host Lymnaea stagnalis. We experimentally examined the growth of snails kept in pairs in relation to their infection status and intensity of resource competition (i.e. food availability). We found that parasitized snails grew faster and their reproduction was reduced compared to unparasitized individuals indicating parasite-induced gigantism. However, growth of the snails was faster when competing with parasitized individuals compared to unparasitized snails indicating reduced competitive ability due to parasitism. The latter effect, however, was relatively weak suggesting that the effects of the parasite on snail physiology may partly override each other in determining competitive ability.

  3. The small but clear gravity signal above the natural cave 'Grotta Gigante' (Trieste, Italy)

    Science.gov (United States)

    Braitenberg, Carla; Sampietro, Daniele; Zuliani, David; Barbagallo, Alfio; Fabris, Paolo; Fabbri, Julius; Rossi, Lorenzo; Handi Mansi, Ahmed

    2014-05-01

    Gravity observations are a powerful means for detecting underground mass changes. The Italian and Slovenian Karst has a number of explored caves, several are also touristic due to their size (e.g. Grotta Gigante in Italy; Skocjianske Jame and Postojnska Jama in Slovenia). Just a few years ago another big cave was discovered by chance close to Trieste when drilling a tunnel for a motor-highway, which shows that more caves are expected to be discovered in coming years. We have acquired the gravity field above the Grotta Gigante cave, a cave roughly 100 m high and 200 m long with a traditional spring-gravity meter (Lacoste&Romberg) and height measurements made with GPS and total station. The GPS was made with two different teams and processing algorithms, to cross-check accuracy and error estimate. Some stations had to be surveyed with a classical instrument due to the vegetation which concealed the satellite positioning signal. Here we present the results of the positioning acquisitions and the gravity field. The cave produces a signal of 1.5 mGal, with a clear elongated concentric symmetry. The survey shows that a systematic coverage of the Karst would have the benefit to recover the position of all of the greater existing caves. This will have a large impact on civil and environmental purposes, since it will for example allow to plan the urban development at a safety distance from subsurface caves.

  4. Cardiac and metabolic effects of chronic growth hormone and insulin-like growth factor I excess in young adults with pituitary gigantism.

    Science.gov (United States)

    Bondanelli, Marta; Bonadonna, Stefania; Ambrosio, Maria Rosaria; Doga, Mauro; Gola, Monica; Onofri, Alessandro; Zatelli, Maria Chiara; Giustina, Andrea; degli Uberti, Ettore C

    2005-09-01

    Chronic growth hormone (GH)/insulin-like growth factor I (IGF-I) excess is associated with considerable mortality in acromegaly, but no data are available in pituitary gigantism. The aim of the study was to evaluate the long-term effects of early exposure to GH and IGF-I excess on cardiovascular and metabolic parameters in adult patients with pituitary gigantism. Six adult male patients with newly diagnosed gigantism due to GH secreting pituitary adenoma were studied and compared with 6 age- and sex-matched patients with acromegaly and 10 healthy subjects. Morphologic and functional cardiac parameters were evaluated by Doppler echocardiography. Glucose metabolism was assessed by evaluating glucose tolerance and homeostasis model assessment index. Disease duration was significantly longer (Pgigantism than in patients with acromegaly, whereas GH and IGF-I concentrations were comparable. Left ventricular mass was increased both in patients with gigantism and in patients with acromegaly, as compared with controls. Left ventricular hypertrophy was detected in 2 of 6 of both patients with gigantism and patients with acromegaly, and isolated intraventricular septum thickening in 1 patient with gigantism. Inadequate diastolic filling (ratio between early and late transmitral flow velocitygigantism and 1 of 6 patients with acromegaly. Impaired glucose metabolism occurrence was higher in patients with acromegaly (66%) compared with patients with gigantism (16%). Concentrations of IGF-I were significantly (Pgigantism who have cardiac abnormalities than in those without cardiac abnormalities. In conclusion, our data suggest that GH/IGF-I excess in young adult patients is associated with morphologic and functional cardiac abnormalities that are similar in patients with gigantism and in patients with acromegaly, whereas occurrence of impaired glucose metabolism appears to be higher in patients with acromegaly, although patients with gigantism are exposed to GH excess for a

  5. La oportunidad de un atlas sobre el estado del continente africano / The Opportunity of an Atlas about the Situation of the African Continent

    Directory of Open Access Journals (Sweden)

    Eva Pérez Hernández

    2014-12-01

    Full Text Available Desde la Antigüedad clásica hasta nuestros días se han multiplicado las representaciones cartográficas de la Tierra, sin embargo, no todos los territorios del planeta han recibido la misma atención. En el caso del continente africano son escasas las colecciones de mapas recientes y, especialmente, las que conforman atlas temáticos. Esta circunstancia fue determinante en la orientación de las prácticas desarrolladas en Casa África durante el curso académico 2012-2013, al amparo del Consorcio Casa África-Universidad de Las Palmas de Gran Canaria. El objetivo de las prácticas fue la elaboración de un atlas digital de África que tuvo como resultado la realización de cuarenta mapas temáticos basados en indicadores geográficos, ambientales, demográficos, económicos, sociales, geopolíticos, culturales y de sus relaciones económicas y políticas con España. La elaboración de dicho atlas se vio afectada por numerosas dificultades en cuanto a la búsqueda y tratamiento de las fuentes de información y por un trabajo de diseño y edición que requirió de la utilización de las nuevas tecnologías de la información geográfica. El presente artículo reflexiona acerca de la importancia de la cartografía como herramienta imprescindible de conocimiento geográfico y acerca de la superación de dificultades que entrañan retos como el de la realización de un atlas sobre el estado actual del continente africano.From Classical Antiquity to the present days, cartographic representations of the Earth have multiplied. However, not all the territories of the planet have received the same attention. In the case of the African continent, there are few collections of recent maps, especially, of those that are composed of thematic atlases. This circumstance was decisive in determining the focus of the internship in Casa África during academic year 2012-2013, under the auspices of the Consortium Casa África - University of Las Palmas de Gran

  6. Historia poblacional, orígenes africanos y microevolución de los actuales afro-colombianos inferidos desde caracteres epigenéticos en la dentición decidua y permanente

    Directory of Open Access Journals (Sweden)

    Delgado Burbano, Miguel E.

    2006-01-01

    Full Text Available Setenta y cinco rasgos coronales no-métricos en la dentición permanente y decidua fueron registrados en 178 modelos dentales de individuos afro-colombianos pertenecientes a la comunidad de Guapi. Se recolectaron datos comparativos de 33 grupos africanos, otro grupo afro-estadounidense en la dentición permanente, en 4 grupos afro-americanos y otros 12 grupos de diferente ascendencia étnica, en la dentición decidua. Un análisis multivariado de componentes principales basado en frecuencias dentales, mostró que los afro-colombianos poseen gran afinidad genética con el Africa Sub-Sahariana, específicamente con grupos del Occidente, del Oriente y del Sur-Oriente africano. Este mismo análisis detectó una marcada divergencia dental con las poblaciones Norafricanas. Los resultados de esta investigación concuerdan con recientes estudios genéticos, basados en marcadores de ADNmt. A pesar que la dentición es evolutivamente conservativa y estable en una escala diacrónica corta, se concluyó que en 400 años de microevolución de los africanos en Colombia, su pool genético original se ha modificado levemente, debido a la influencia de presiones selectivas y flujo génico interétnico, con nativos americanos y grupos de origen caucásico. Se sugiere que los grupos afro-descendientes del Norte, Centro y Sur de América poseen historias poblacionales y evolutivas distintas, debido tanto a procesos de diferenciación fenotípica regional y local como a orígenes geográficos y étnicos diferentes.

  7. 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.

  8. A competição estratégica na cooperação técnico-militar nos países africanos de língua oficial portuguesa

    OpenAIRE

    Baptista, Luís

    2013-01-01

    Portugal desenvolve cooperação técnico-militar (CTM) com os países africanos de língua oficial portuguesa (PALOP) há mais de duas décadas, em apoio à política externa do Estado. Os importantes recursos naturais ali existentes, associados a um desenvolvimento económico sustentado, aumentaram o interesse de outros atores do sistema internacional, levando-os a desenvolver ou aprofundar a sua cooperação militar com os PALOP, competindo com os interesses de Portugal. Evidencia-se, desta forma a im...

  9. El rol del asociacionismo de inmigrantes africanos en la construcción de cohesión social y la convivencia en Cataluña, Navarra y la Comunidad Valenciana. Miradas Cruzadas

    Directory of Open Access Journals (Sweden)

    Moncusí Ferré, Albert

    2013-06-01

    Full Text Available This article aims to analyse some possible contributions from organisations funded by immigrants from the African continent to the socio-cultural integration in three Regions in Spain. In order to do so, first there is a definition of integrations as a process, paying special attention to the role that national and international literature have given to the associations of immigrants. Afterwards, there is a focus on associations from people with an African origin, paying attention to the double view point, from one side the one from representatives from African associations and on the other, from administration technicians and representatives of social entities that collaborate with them. The point is to analyse the speech of those actors, about the reasons of its existence, the objectives and activities of the associations of Africans, for the associates themselves as well as for those immigrants from their countries and for the society that welcomes them. The elements in favour and against in the studied perspectives build an action field shared by both actors, in the process of construction of social cohesion and living partnership, but, at the same time, they suggest the existence of some limitations in itself.El objetivo de este artículo es analizar algunas posibles contribuciones de las organizaciones fundadas por personas emigradas desde el continente africano a la integración sociocultural en tres Comunidades Autónomas españolas. Para ello, se empieza definiendo la integración como proceso, con particular atención al papel que la literatura nacional e internacional ha otorgado al asociacionismo de inmigrantes en él. Posteriormente, se enfoca el caso particular del asociacionismo de las personas de origen africano y su incidencia en la integración en todo lo referido a la interadaptación social y cultural, según la doble mirada que encontramos en las entrevistas realizadas tanto a representantes de asociaciones de africanos como

  10. La africanidad de España memoria y reconocimiento: la memoria y el reconocimiento de la comunidad africana y africano-descendiente negra en España, el papel de la vanguardia panafricanista

    OpenAIRE

    Toasijé, Antumi

    2011-01-01

    Las personas africanas y africano-descendientes negras en España suman en torno al millón de personas, el asociacionismo ha sido desde los inicios de la nueva migración africana de los años 80 del siglo XX, la fórmula escogida por estas comunidades para establecer redes, reforzar lazos y afrontar problemáticas específicas. Desde los años 90 del siglo XX, un pequeño grupo de asociaciones de carácter panafricanista está constituyéndose en vanguardia de las reivindicaciones negras, entre las que...

  11. Early descriptions of acromegaly and gigantism and their historical evolution as clinical entities.

    Science.gov (United States)

    Mammis, Antonios; Eloy, Jean Anderson; Liu, James K

    2010-10-01

    Giants have been a subject of fascination throughout history. Whereas descriptions of giants have existed in the lay literature for millennia, the first attempt at a medical description was published by Johannes Wier in 1567. However, it was Pierre Marie, in 1886, who established the term "acromegaly" for the first time and established a distinct clinical diagnosis with clear clinical descriptions in 2 patients with the characteristic presentation. Multiple autopsy findings revealed a consistent correlation between acromegaly and pituitary enlargement. In 1909, Harvey Cushing postulated a “hormone of growth" as the underlying pathophysiological trigger involved in pituitary hypersecretion in patients with acromegaly. This theory was supported by his observations of clinical remission in patients with acromegaly in whom he had performed hypophysectomy. In this paper, the authors present some of the early accounts of acromegaly and gigantism, and describe its historical evolution as a medical and surgical entity.

  12. Hepatocarcinoma gigante unifocal en mujer con ingesta prolongada de anticonceptivos hormonales: ¿casualidad o causalidad?

    Directory of Open Access Journals (Sweden)

    VICTOR MANUEL LOPEZ MOURIÑO

    2016-12-01

    Full Text Available Presentamos un caso de una paciente de mediana edad con ingesta mantenida de anticonceptivos hormonales (AH que desarrolla múltiples adenomas hepáticos (asociación bien documentada y un carcinoma hepatocelular (CHC unifocal gigante sin encontrar otros factores de riesgo para el mismo (enolismo, tabaquismo, cirrosis, hemocromatosis,..... Si bien en la literatura no hay unanimidad respecto a la asociación del consumo de AH con el CHC, algunos autores ya contemplaron esa posibilidad, excluyendo también otras etiologías reconocidas de CHC, por lo que debería reevaluarse si su asociación es aleatoria o por el contrario existe nexo causal.

  13. A gigantic, exceptionally complete titanosaurian sauropod dinosaur from southern Patagonia, Argentina.

    Science.gov (United States)

    Lacovara, Kenneth J; Lamanna, Matthew C; Ibiricu, Lucio M; Poole, Jason C; Schroeter, Elena R; Ullmann, Paul V; Voegele, Kristyn K; Boles, Zachary M; Carter, Aja M; Fowler, Emma K; Egerton, Victoria M; Moyer, Alison E; Coughenour, Christopher L; Schein, Jason P; Harris, Jerald D; Martínez, Rubén D; Novas, Fernando E

    2014-09-04

    Titanosaurian sauropod dinosaurs were the most diverse and abundant large-bodied herbivores in the southern continents during the final 30 million years of the Mesozoic Era. Several titanosaur species are regarded as the most massive land-living animals yet discovered; nevertheless, nearly all of these giant titanosaurs are known only from very incomplete fossils, hindering a detailed understanding of their anatomy. Here we describe a new and gigantic titanosaur, Dreadnoughtus schrani, from Upper Cretaceous sediments in southern Patagonia, Argentina. Represented by approximately 70% of the postcranial skeleton, plus craniodental remains, Dreadnoughtus is the most complete giant titanosaur yet discovered, and provides new insight into the morphology and evolutionary history of these colossal animals. Furthermore, despite its estimated mass of about 59.3 metric tons, the bone histology of the Dreadnoughtus type specimen reveals that this individual was still growing at the time of death.

  14. Giants among larges: how gigantism impacts giant virus entry into amoebae.

    Science.gov (United States)

    Rodrigues, Rodrigo Araújo Lima; Abrahão, Jônatas Santos; Drumond, Betânia Paiva; Kroon, Erna Geessien

    2016-06-01

    The proposed order Megavirales comprises the nucleocytoplasmic large DNA viruses (NCLDV), infecting a wide range of hosts. Over time, they co-evolved with different host cells, developing various strategies to penetrate them. Mimiviruses and other giant viruses enter cells through phagocytosis, while Marseillevirus and other large viruses explore endocytosis and macropinocytosis. These differing strategies might reflect the evolution of those viruses. Various scenarios have been proposed for the origin and evolution of these viruses, presenting one of the most enigmatic issues to surround these microorganisms. In this context, we believe that giant viruses evolved independently by massive gene/size gain, exploring the phagocytic pathway of entry into amoebas. In response to gigantism, hosts developed mechanisms to evade these parasites.

  15. "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.

  16. ecCNO solar neutrinos: A challenge for gigantic ultra-pure liquid scintillator detectors

    Science.gov (United States)

    Villante, F. L.

    2015-03-01

    Neutrinos produced in the Sun by electron capture reactions on 13N, 15O and 17F, to which we refer as ecCNO neutrinos, are not usually considered in solar neutrino analysis since the expected fluxes are extremely low. The experimental determination of this sub-dominant component of the solar neutrino flux is very difficult but could be rewarding since it provides a determination of the metallic content of the solar core and, moreover, probes the solar neutrino survival probability in the transition region at Eν ∼ 2.5 MeV. In this Letter, we suggest that this difficult measure could be at reach for future gigantic ultra-pure liquid scintillator detectors, such as LENA.

  17. Pituitary tumor with gigantism, acromegaly and preclinical Cushing's disease diagnosed from the 10th row.

    Science.gov (United States)

    Tourtelot, John B; Vesely, David L

    2013-08-01

    A 7'3" basketball player was noted to have 2 to 3 times thicker tissue in his hands than 6'10" players by an endocrinologist sitting 10 rows above the player in a basketball arena. This led to the diagnosis of pituitary gigantism where the history revealed that he was 7'3" at 15 years of age. At age 19 when the acryl enlargement was noted, a diagnostic workup revealed elevated growth hormones and insulin-like growth factor 1 (IGF-1) with a 2 × 1.3 cm pituitary tumor. His history suggested that his epiphyseal plates had closed at age 15, and because he continued to produce IGF-1, he now has acromegaly. His elevated adrenocorticotropic hormone (ACTH) before surgery suggests that he also had preclinical Cushing's disease. After pituitary transsphenoidal surgery, all acryl enlargement in hands and ligaments disappeared. His growth hormone, IGF-1 and ACTH returned to normal 2 weeks after surgery.

  18. 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.

  19. 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.

  20. Aneurisma gigante da artéria cerebral posterior: (segmento P3) Relato de caso

    OpenAIRE

    1995-01-01

    Apresentamos caso de aneurisma gigante do segmento distal (P3) da artéria cerebral posterior. O aneurisma foi tratado microcirurgicamente pela via combinada proposta por Sano com clipagem do ramo terminal da artéria cerebral posterior próximo ao aneurisma. A paciente teve evolução pós operatória favorável, com lesão parcial e transitória do III nervo craniano. Revisão da literatura e discussão a respeito da anatomia e da abordagem cirúrgica são feitas. A raridade desta patologia justifica o r...

  1. ecCNO solar neutrinos: A challenge for gigantic ultra-pure liquid scintillator detectors

    Directory of Open Access Journals (Sweden)

    F.L. Villante

    2015-03-01

    Full Text Available Neutrinos produced in the Sun by electron capture reactions on 13N, 15O and 17F, to which we refer as ecCNO neutrinos, are not usually considered in solar neutrino analysis since the expected fluxes are extremely low. The experimental determination of this sub-dominant component of the solar neutrino flux is very difficult but could be rewarding since it provides a determination of the metallic content of the solar core and, moreover, probes the solar neutrino survival probability in the transition region at Eν∼2.5 MeV. In this Letter, we suggest that this difficult measure could be at reach for future gigantic ultra-pure liquid scintillator detectors, such as LENA.

  2. Can oxygen set thermal limits in an insect and drive gigantism?

    Directory of Open Access Journals (Sweden)

    Wilco C E P Verberk

    Full Text Available BACKGROUND: Thermal limits may arise through a mismatch between oxygen supply and demand in a range of animal taxa. Whilst this oxygen limitation hypothesis is supported by data from a range of marine fish and invertebrates, its generality remains contentious. In particular, it is unclear whether oxygen limitation determines thermal extremes in tracheated arthropods, where oxygen limitation may be unlikely due to the efficiency and plasticity of tracheal systems in supplying oxygen directly to metabolically active tissues. Although terrestrial taxa with open tracheal systems may not be prone to oxygen limitation, species may be affected during other life-history stages, particularly if these rely on diffusion into closed tracheal systems. Furthermore, a central role for oxygen limitation in insects is envisaged within a parallel line of research focussing on insect gigantism in the late Palaeozoic. METHODOLOGY/PRINCIPAL FINDINGS: Here we examine thermal maxima in the aquatic life stages of an insect at normoxia, hypoxia (14 kPa and hyperoxia (36 kPa. We demonstrate that upper thermal limits do indeed respond to external oxygen supply in the aquatic life stages of the stonefly Dinocras cephalotes, suggesting that the critical thermal limits of such aquatic larvae are set by oxygen limitation. This could result from impeded oxygen delivery, or limited oxygen regulatory capacity, both of which have implications for our understanding of the limits to insect body size and how these are influenced by atmospheric oxygen levels. CONCLUSIONS/SIGNIFICANCE: These findings extend the generality of the hypothesis of oxygen limitation of thermal tolerance, suggest that oxygen constraints on body size may be stronger in aquatic environments, and that oxygen toxicity may have actively selected for gigantism in the aquatic stages of Carboniferous arthropods.

  3. The Early ULF Signal of the Gigantic Jets Revealed By Hilbert-Huang Transform

    Science.gov (United States)

    Huang, Po-Hsun; Bing-Chih Chen, Alfred

    2015-04-01

    The conventional Fourier analysis on the sferics in ULF and VLF bandpasses has been done for years. Several phenomena e.g. whistler and Schumann resonance have been well studied by the Fourier spectrum comprehensively. But the Fourier analysis is computed by an integration over time, therefore, the temporal resolution is smoothed, and limited not only by the sampling rate but also the size of the integration window. The instantaneous frequency can't be obtained through this conventional approach. We introduce the Hilbert-Huang transform (HHT) instead of Fourier transform to analyze the sferics of TLEs recorded at Lulin observatory. The Hilbert-Huang transform decomposes a signal into so-called intrinsic mode functions (IMF), and derive instantaneous frequency data by differentiating the phase angle yielded by Hilbert transform. Our analysis of HHT on several gigantic jets recorded by ground observation surprisingly revealed an early signal of frequency-change during the phase of the leading jet, and this early signal can not be identified by Fourier analysis. In the phase of leading jet, the amplitude of the sferics remains a constant and no significant features are recognized in the recorded waveform, but an obvious frequency change about 100-200 millisecond prior to the main discharge of the full development jets (FDJs), which can be clearly recognized in the HHT spectra of all observed gigantic jets. From a further simulation, this frequency change is confirmed to come from the nature of the discharge, not an alias or a false signal generated by the analysis method. This early signal may implies an in-cloud discharge process which is suggested by Krehbiel et al. [2008

  4. Susceptibilidade do besouro rola-bosta africano a reguladores de crescimento de insetos Susceptibility of African dung beetle to insect growth regulators

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    L.N. Domingues

    2009-10-01

    Full Text Available Verificou-se a ação dos reguladores de crescimento de insetos (IGR, diflubenzuron e methoprene, sobre o besouro rola-bosta africano, Digitonthophagus gazella (Fabricius, um inimigo natural da mosca-dos-chifres, Haematobia irritans irritans (Linnaeus. Casais de besouros foram colocados em baldes contendo terra úmida e alimentados com fezes bovinas contendo 1, 0,5 ou 0,2ppm de diflubenzuron e 0,2ppm de methoprene. Os insetos e sua prole foram recuperados com o auxílio de armadilhas pitfall. Diflubenzuron e methoprene não afetaram a sobrevivência dos adultos inicialmente expostos, mas interferiram na produção de descendentes. Diflubenzuron, nas concentrações de 1 e 0,5ppm, também afetou a duração do ciclo de vida dos besouros. Nenhum dos IGRs alterou a razão sexual dos descendentes obtidos. As concentrações testadas de diflubenzuron mostraram-se moderadamente nocivas ao besouro enquanto methoprene a 0,2ppm mostrou ser pouco nocivo, segundo os critérios da International Organization for Biological Control.The effects of insect growth regulators (IGR, diflubenzuron and methoprene, on African dung beetle, Digitonthophagus gazella (Fabricius, a natural enemy of the horn fly, Haematobia irritans irritans (Linnaeus, was studied. Beetles were placed in buckets partially filled with humid soil and were fed bovine feces containing 1, 0.5, or 0.2ppm diflubenzuron and 0.2ppm methoprene. Insects and their progenies were recovered by pitfall traps. Diflubenzuron and methoprene did not affect the survival of the adults but reduced their progenies. Diflubenzuron 1 and 0.5ppm also affected the life cicle of the beetles. None of the IGR modified the gender ratio of the progenies. According to the IOBC criteria, diflubenzuron tested concentrations showed to be moderately harmful to the beetles, whereas methoprene 0.2ppm was slightly harmful.

  5. Análisis socioeconómico de la pesquería de calamar gigante en Guaymas, Sonora

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    Francisco Javier de la Cruz-González

    2011-01-01

    Full Text Available En este trabajo hacemos un análisis socioeconómico de la pesquería de calamar gigante en Guaymas, Sonora. Se generó una base de datos con información pesquera y se aplicó una encuesta a pescadores y a trabajadores de la industria del calamar para determinar sus principales características socioeconómicas. Los resultados muestran que esta pesquería ha tenido una participación importante en la estructura productiva del sector pesquero de la región; sin embargo, el repunte en las capturas de calamar gigante en los últimos años ha permitido el crecimiento de esta pesquería, pero no su desarrollo. El documento resalta la necesidad de orientar las políticas de manejo al aprovechamiento integral de este recurso.

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

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    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.

  7. Polyostotic fibrous dysplasia with gigantism and huge pelvic tumor: a rare case of McCune-Albright syndrome.

    Science.gov (United States)

    Sakayama, Kenshi; Sugawara, Yoshifumi; Kidani, Teruki; Fujibuchi, Taketsugu; Kito, Katsumi; Tanji, Nozomu; Nakamura, Atsushi

    2011-06-01

    We report a rare case of polyostotic fibrous dysplasia on endocrine hyperfunction with elevated human growth hormone and normal serum level of prolactin. There were some differential points of gender, gigantism, endocrine function, and GNAS gene from McCune-Albright syndrome. Malignant transformation was suspected in the pelvic tumor from imaging because rapid growth of the tumor by imaging was observed; however, no malignant change occurred in this case.

  8. Convergent evolution of gigantism in damselflies of Africa and South America? Evidence from nuclear and mitochondrial sequence data.

    Science.gov (United States)

    Groeneveld, Linn F; Clausnitzer, Viola; Hadrys, Heike

    2007-02-01

    Extreme large body size is rare in modern Zygoptera (damselflies). Only the South and Central American damselfly family Pseudostigmatidae and one African species, Coryphagrion grandis, share the morphological trait of gigantism. By means of phylogenetic analyses using two mitochondrial markers (16S rDNA and ND1) and one nuclear marker (EF1) in combination with an existing morphological data set, we trace the evolution of gigantism in damselflies. Individual and combined data sets were analyzed using the maximum parsimony, minimum evolution and maximum likelihood algorithms. Regardless of the algorithm used and the data set analyzed all principal tree topologies support a monophyly of the damselfly taxa displaying giant body size. This supports the view that the evolution of gigantism in damselflies from Africa and South America is not the result of convergent evolution due to strikingly similar habitat preferences, but rather the result of close genealogical relationship. Because modern odonates evolved before the split of Africa from Gondwanaland, the proposed phylogeny suggests that C. grandis represents a Gondwana relict.

  9. Gravity combined with laser-scan in Grotta Gigante: a benchmark cave for gravity studies

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    Pivetta, Tommaso; Braitenberg, Carla

    2014-05-01

    Laser scanning has become one of the most important topographic techniques in the last decades, due to its ability to reconstruct complex surfaces with high resolution and precision and due to its fast acquisition time. Recently a laser-scan survey has been acquired (Fingolo et al., 2011) in the "Grotta Gigante" cave near Trieste, Italy, the biggest cave worldwide according to the Guinness Awards. In this paper this survey is used to obtain a 3D discretization of the cave with prisms. Then through this new model, with the densities derived from campaign measurements, the exact gravimetric effect of the structure was computed (Nagy et al., 2000) and compared with the gravity observation at the surface. The transition from the cloud of laser-scan points to the prism model was carried out by different computer elaborations; first of all the reduction of the data density through an averaging process that allows to pass from over 10000 points/m2 to less than 10points/m2. Then the whole dataset was filtered from the outliers by the means of a simple quadratic surface that fit the data (Turner, 1999). The reduced data points should be divided into the 2 surfaces of top and bottom, that are used to define the prisms. This step was performed using the local regression method (Loess) to calculate a surface located halfway between top and bottom points. Once the top and bottom interfaces were obtained it was possible to get the final prism representation and calculate the gravity signal. The observed Bouguer field is explained very well by our model and the residuals are used to evaluate possible secondary caves. The final prism model together with the gravity database on surface and inside the cave form a perfect benchmark to test forward and inverse potential field algorithms. References Fingolo M., Facco L., Ceccato A., Breganze C., Paganini P., Cezza M., Grotta Gigante di Trieste. Tra realtà virtuale e rilievi 3D ad alta risoluzione, Veneto Geologi, 75, pp.21-25, 2011

  10. Parâmetros astrofísicos de estrelas gigantes do aglomerado globular 47 Tucanae

    Science.gov (United States)

    Alves-Brito, A.; Barbuy, B.

    2003-08-01

    Os aglomerados globulares são considerados laboratórios astrofísicos para a verificação da teoria de evolução estelar, bem como a trajetória químio-dinâmica das galáxias hospedeiras. Em particular, 47 Tucanae (NGC 104) configura-se como um dos mais extensivamente estudados aglomerados globulares da Galáxia devido a relativa proximidade ao Sol (R¤ = 4.5 kpc) e alta latitute galáctica (b = -44°,89). Neste trabalho, apresentamos a velocidade radial heliocêntrica e os parâmetros atmosféricos (Teff, logg, [Fe/H]) de 5 estrelas gigantes do aglomerado globular 47 Tucanae. Os espectros foram obtidos pelo espectrógrafo UVES (Ultaviolet Visual Echelle Spectrograph) de alta resolução (R = 60000) e alta razão sinal-ruído (S/N > 200), acoplado ao telescópio de 8,2m Kueyen do VLT (Very Large Telescope). Nós encontramos = -22,43 +/- 3,97 km/s, [Fe/H] ~ -0.7, 1,2 aglomerados globulares ricos em metais. Trabalho financiado pela FAPESP e pelo CNPq.

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

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    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.

  12. Discovery of gigantic molecular nanostructures using a flow reaction array as a search engine

    Science.gov (United States)

    Zang, Hong-Ying; de La Oliva, Andreu Ruiz; Miras, Haralampos N.; Long, De-Liang; McBurney, Roy T.; Cronin, Leroy

    2014-04-01

    The discovery of gigantic molecular nanostructures like coordination and polyoxometalate clusters is extremely time-consuming since a vast combinatorial space needs to be searched, and even a systematic and exhaustive exploration of the available synthetic parameters relies on a great deal of serendipity. Here we present a synthetic methodology that combines a flow reaction array and algorithmic control to give a chemical ‘real-space’ search engine leading to the discovery and isolation of a range of new molecular nanoclusters based on [Mo2O2S2]2+-based building blocks with either fourfold (C4) or fivefold (C5) symmetry templates and linkers. This engine leads us to isolate six new nanoscale cluster compounds: 1, {Mo10(C5)}; 2, {Mo14(C4)4(C5)2}; 3, {Mo60(C4)10}; 4, {Mo48(C4)6}; 5, {Mo34(C4)4}; 6, {Mo18(C4)9}; in only 200 automated experiments from a parameter space spanning ~5 million possible combinations.

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

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    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. Discovery of gigantic molecular nanostructures using a flow reaction array as a search engine.

    Science.gov (United States)

    Zang, Hong-Ying; de la Oliva, Andreu Ruiz; Miras, Haralampos N; Long, De-Liang; McBurney, Roy T; Cronin, Leroy

    2014-04-28

    The discovery of gigantic molecular nanostructures like coordination and polyoxometalate clusters is extremely time-consuming since a vast combinatorial space needs to be searched, and even a systematic and exhaustive exploration of the available synthetic parameters relies on a great deal of serendipity. Here we present a synthetic methodology that combines a flow reaction array and algorithmic control to give a chemical 'real-space' search engine leading to the discovery and isolation of a range of new molecular nanoclusters based on [Mo(2)O(2)S(2)](2+)-based building blocks with either fourfold (C4) or fivefold (C5) symmetry templates and linkers. This engine leads us to isolate six new nanoscale cluster compounds: 1, {Mo(10)(C5)}; 2, {Mo(14)(C4)4(C5)2}; 3, {Mo(60)(C4)10}; 4, {Mo(48)(C4)6}; 5, {Mo(34)(C4)4}; 6, {Mo(18)(C4)9}; in only 200 automated experiments from a parameter space spanning ~5 million possible combinations.

  15. Lower limb gigantism, lymphedema, and painful varicosities following a thigh vascular access graft.

    Science.gov (United States)

    Thompson, Michael; Mathuram Thiyagarajan, Umasankar; Akoh, Jacob A

    2014-07-01

    Prosthetic arteriovenous grafts (AVGs) are associated with greater morbidity than autogenous arteriovenous fistulas (AVFs), but their use is indicated when AVF formation is not possible. This report adds to the literature a case of lower limb gigantism, painful varicosities, and lymphedema following long-term use of AVG in the upper thigh. The patient's past medical history included renal transplantation on the same side well before the AVG was inserted and right leg deep vein thrombosis. Suspicion of AVG thrombosis was excluded by Doppler ultrasound, which demonstrated an access flow of 1700 mL/min. A computed tomography (CT) scan of the abdomen and pelvis did not identify the cause of her symptoms. Whereas functional incompetence of the iliac vein valve might be responsible for the varicosities, the extent of hypertrophy in this case raises the suspicion of lymphatic blockage possibly secondary to groin dissection undertaken at the time of graft insertion, in addition to the previous dissection at the time of transplantation. This case highlights the need for minimal groin dissection during AVG insertion, particularly in patients with a history of previous abdominopelvic surgery.

  16. A Thermodynamic, kinematic and microphysical analysis of a jet and gigantic jet-producing Florida thunderstorm

    Science.gov (United States)

    Lazarus, S. M.; Splitt, M. E.; Brownlee, James; Spiva, Nicholas; Liu, Ningyu

    2015-08-01

    This paper presents a meteorological analysis of a storm that produced two jets, four gigantic jets (GJ), and a starter, which were observed by two radars as well as the Kennedy Space Center 4-Dimensional Lightning Surveillance System on 3 August 2013 in Central Florida. The work is the first application of dual polarization data to a jet-producing storm and is the fifth case related to a tropical disturbance. The storm environment is consistent with the moist tropical paradigm that characterizes about three quarters of the surface and aircraft observed jet and GJ events. The most unstable (MU) convective available potential energy is not unusual for Florida summer convection and is below the climatological mean for these events. An unusual speed shear layer is located near the storm equilibrium level (EL) and the storm exhibits a tilted structure with CGs displaced upshear. The turbulence, as measured by the eddy dissipation rate, is extreme near the storm top during the event window, consistent with the GJ mixing hypothesis. The individual events are collocated with, and track along, the center axis of the divergent outflow at the EL and occur within the region of the coldest GOES IR temperatures—placing the events within the overshoot. The dual polarization data indicate a deep graupel column, extending above the mixed phase layer, to a 13 km altitude.

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

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    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.

  18. Proptose causada por adenoma pituitário gigante: relato de caso

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    Pereira Andréa

    2003-01-01

    Full Text Available OBJETIVO: Relatar um caso raro de proptose unilateral associada à paralisia oculomotora e cegueira causados por adenoma pituitário gigante. MÉTODOS: A paciente foi submetida a exame clínico e oftalmológico completo, campimetria, exame de imagem por ressonância magnética e estudo histopatológico do tumor após intervenção cirúrgica. RESULTADOS: Paciente de 21 anos apresentou perda visual progressiva bilateral associada à proptose e limitação da motilidade ocular do olho esquerdo. A campimetria revelou hemianopsia temporal completa no olho direito e havia ausência de percepção luminosa no olho esquerdo. O exame de imagem por ressonância magnética mostrou extenso tumor infiltrando o terceiro ventrículo, seio cavernoso e ápice da órbita à esquerda. O estudo histopatológico revelou se tratar de adenoma hipofisário produtor de hormônio de crescimento e prolactina sem sinais de malignidade. CONCLUSÃO: Este caso é de interesse não apenas pelo fato do envolvimento orbitário pelos adenomas ser extremamente raro, mas também para salientar a importância de diagnóstico precoce uma vez que apesar da histologia benigna, os adenomas invasivos nem sempre seguem curso clínico favorável.

  19. Evolución de planetas gigantes y posibilidades de su detección directa

    Science.gov (United States)

    Brunini, A.; Benvenuto, O. G.

    Desde la reciente detección de planetas gigantes orbitando estrellas cercanas de tipo solar por medio de efecto Doppler, uno de los principales problemas, en cuanto al estudio de los sistemas planetarios extrasolares, se refiere a la posibilidad de obtener evidencia directa de su existencia. Esto parece ser factible gracias a que en un futuro cercano entrarán en operación algunos telescopios especialmente adecuados a estos propósitos. Por tal motivo, hemos comenzado desde hace un tiempo un esfuerzo en cuanto al estudio de la evolución planetaria. A tales efectos hemos adaptado el código de evolución estelar de nuestro Observatorio al caso planetario. Las principales diferencias entre el caso estelar y el planetario se encuentran en la ecuación de estado. A tales fines hemos incluído la reciente ecuación de estado de Saumon, Chabrier y Van Horn, las opacidades radiativas de Guillot et al., procesos de quema de Deuterio, etc. También se ha considerado la posible existencia de fases de hielo y roca en el interior planetario. Por el momento hemos despreciado los efectos de la rotación planetaria. Con este código hemos computado la evolución de planetas con masas desde 10 hasta 0.3 masas de Júpiter. Utilizando nuestros resultados numéricos discutimos la detectabilidad de estos objetos en condiciones realistas.

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

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    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.

  1. Sudáfrica: La Clase Obrera y el Congreso Nacional Africano después de la Segunda Guerra Mundial

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    Musso, Javier

    2010-01-01

    Full Text Available El tema a trabajar será “Los movimientos nacionalistas y la clase obrera en Sudáfrica”, en el período que va desde la Segunda Guerra Mundial hasta principios de la década del sesenta. Más específicamente se analizará cómo los movimientos nacionalistas sudafricanos, principalmente el A.N.C. (African National Congress, se ligan a un importante número de trabajadores africanos y a los sindicatos que los dirigen; se establecerá cuáles eran sus programas políticos y sus estrategias de luchas contra el gobierno de la Unión y el Imperio inglés para la independencia nacional; y a partir de esto se precisaran sus límites tácticos y programáticos, sosteniendo como hipótesis de trabajo que en Sudáfrica, dada la importancia estructural de la clase obrera, existió la posibilidad de un programa y una dirección política que organizara a los trabajadores con sus propios métodos de lucha y que fuera más allá de la independencia política y nacional, es decir una alternativa socialista; y que, para ello, definiera claramente que la lucha por la independencia debía ser en contra, no sólo del gobierno de la minoría blanca, sino también de los verdaderos beneficiarios del régimen de segregación y superexplotación: las empresas transnacionales de capitales extranjeros, principalmente británicos. Para sostener esta hipótesis se realizará un análisis estructural de las distintas clases sociales en Sudáfrica desde una mirada marxista, como así también se analizarán las diversas luchas llevadas adelantes por los trabajadores sudafricanos y las respuestas que a éstas dieron los partidos y sindicatos que las dirigieron.The subject to work will be “the nationalistic movements and the working class in South Africa”, in the period that goes from World War II until the beginning of the Sixties. More specifically one will analyze how the South African nationalistic movements, mainly A.N.C. (African National Congress, they league

  2. New color images of sprites, halos and gigantic jets from the International Space Station

    Science.gov (United States)

    Yair, Y.; Rubanenko, L.; Mezuman, K.; Elhalel, G.; Pariente, M.; Glickman-Pariente, M.; Ziv, B.; Takahashi, Y.; Inoue, T.

    2012-12-01

    During July-August 2011, Expedition 28/29 JAXA astronaut Satoshi Furukawa conducted TLE observations from the International Space Station in conjunction with the "Cosmic Shore" program produced by NHK. An EMCCD normal video-rate color TV camera was used to conduct directed observations from the Earth-pointing Copula module. The target selection was based on the methodology developed for the MEIDEX sprite campaign on board the space shuttle Columbia in January 2003 (Ziv et al., 2004). We used the Aviation Weather Center (http://aviationweather.gov) daily significant weather forecast maps (SIGWX) to select regions with high probability for convective activity and thunderstorm such that they were within the camera FOV as deduced from the ISS trajectory and distance to the limb (2240 km). For increasing the chance for successful observations, only storms with predicted "Frequent Cb" and cloud tops above 45 Kft (~14 km) were selected. Additionally, we targeted tropical storms and hurricanes over the oceans. The observation geometry was pre-determined and uploaded daily to the ISS with pointing options to limb, oblique or nadir, based on the predicted location of the storm with regards to the ISS. The pointing angle was rotated in real-time according to visual eyesight by the astronaut. We present results of 10 confirmed TLEs: 8 sprites, 1 sprite halo and 1 gigantic jet, out of displaced form the lightning light and (b) from oblique view of a sprite halo, enable the calculation of dimensions and volumes occupied by these TLEs. Since time stamping on the ISS images was accurate within 1 s, matching with ELF and WWLLN data for the parent lightning location is limited. Nevertheless, the results prove that the ISS is an ideal platform for lightning and TLE observations, and careful operational procedures greatly enhance the value of observation time.;

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

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    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.

  4. Similarity Analysis of the Streamer Zone of Blue Jets and Gigantic Blue Jets

    Science.gov (United States)

    Gennady, M.; Popov, N. A.; Shneider, M.

    2015-12-01

    Multiple observations of Blue Jets (BJ) and Gigantic Blue Jets (GBJ) show that BJ emits a fan of streamers similar to a laboratory leader. Moreover, in the exponential atmosphere those long streamers grow preferentially upward, producing a narrow cone confined by the aperture angle. Petrov and Petrova [1999] and Pasko and George [2002] noticed that BJ are similar to the streamer zone of a leader (streamer corona) and conducted modeling studies based on the streamers fractal structure. Objective of this paper is to study the fractal dimension of the bunch of streamer channels emitted by BJ, at different altitude and under the varying reduced electric field. This similarity analysis has been done in three steps: First we described the dendritic structure of streamers in corona discharge applying the fractal theory by Popov [2002]. Then using this model and the data from existing laboratory experiments we obtained that the fractal dimension of the branching streamer channels D=2. We estimated next the packing factor of the streamers using the kinetic simulations that describe development of a group of streamers that propagate in a discharge gap while interact with each other. Finally the model was used to analyze some GBJ images available from the literature. The model output includes evaluation of the total number of streamer channels in the GBJs along with estimates of the aperture angle and of the average distance between the brunches. In addition the analysis allows us to obtain the mean streamer velocity for the studied GBJs and check the velocity against the observations. V.P. Pasko and J.J. George, J. Geophys. Res. 107, 1458, 2002 N.I. Petrov and G.N. Petrova, Tech Phys. Lett., 44, 472, 1999 N.A. Popov, Plasma Phys. Reports, 28, 615, 2002.

  5. Acromegaly and gigantism in the medical literature. Case descriptions in the era before and the early years after the initial publication of Pierre Marie (1886).

    Science.gov (United States)

    de Herder, Wouter W

    2009-01-01

    In 1886 Pierre Marie used the term "acromegaly" for the first time and gave a full description of the characteristic clinical picture. However several others had already given clear clinical descriptions before him and sometimes had given the disease other names. After 1886, it gradually became clear that pituitary enlargement (caused by a pituitary adenoma) was the cause and not the consequence of acromegaly, as initially thought. Pituitary adenomas could be found in the great majority of cases. It also became clear that acromegaly and gigantism were the same disease but occurring at different stages of life and not different diseases as initially thought. At the end of the 19th and beginning of the 20th century most information was derived from case descriptions and post-mortem examinations of patients with acromegaly or (famous) patients with gigantism. The stage was set for further research into the pathogenesis, diagnosis and therapy of acromegaly and gigantism.

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

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    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.

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

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    Jessica Gómez

    2012-12-01

    Full Text Available 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.

  8. 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.

  9. Espécie invasora em reservas naturais: caracterização da população de Achatina fulica Bowdich, 1822 (Mollusca - Achatinidae) na Ilha Rasa, Guaraqueçaba, Paraná, Brasil

    OpenAIRE

    Fischer,Marta Luciane; Colley,Eduardo

    2005-01-01

    O caramujo africano Achatina fulica é uma das cem espécies invasoras do mundo, causando sérios danos principalmente em ilhas. Objetivou-se caracterizar a população de A. fulica na Ilha Rasa, Guaraqueçaba, PR, Brasil. Coletas sazonais diurnas da A. fulica e fauna associada foram conduzidas na borda e interior de floresta, restinga, mangue e área urbana das comunidades de Almeida e Rasa. Foram coletados 959 caramujos, com uma média de 66,4 animais vivos por terreno vistoriado, estimando-se que ...

  10. El maíz blanco gigante Cusco, una propuesta estratégica para su exportación a España

    OpenAIRE

    2007-01-01

    El maíz blanco gigante Cusco es una variedad representativa del maíz amiláceo, cuyas características principales son su singular tamaño (15 mm), su forma (plano circular) y su rendimiento. Su cultivo se ubica de manera exclusiva en el Valle Sagrado de los Incas (Cusco), lo que le ha permitido la obtención de la denominación de origen. La tesis ha delineado un conjunto de estrategias orientadas a desarrollar la oferta exportable del maíz blanco gigante Cusco hacia el mercado español como...

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

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    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.

  12. Paraganglioma pré-aórtico gigante Giant preaortic paraganglioma

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    Sergio Renato Pais Costa

    2008-12-01

    Full Text Available INTRODUÇÃO: O paraganglioma é um tumor neuroendócrino raro que ocorre mais frequentemente em adultos jovens. Geralmente produz catecolaminas acarretando síndrome adrenérgica. No entanto, muito raramente, quando não-funcionante seus sintomas são mais frequentemente associados à massa abdominal ou mesmo dor. Nessas circunstâncias costumam representar diagnóstico difícil sendo confundidos com os sarcomas de retroperitônio. RELATO DO CASO: Paraganglioma pré-aórtico gigante não-funcionante em paciente com níveis baixos de catecolaminas (sérico e urinário. O diagnóstico pré-operatório foi dado por tomografia computadorizada, onde foi observada massa sólida, hipervascular com calcificações e área cística central. O paciente foi submetido à ressecção cirúrgica da massa com boa evolução pós-operatória. Um ano após a operação, o doente encontra-se vivo sem recidiva tumoral. CONCLUSÃO: Em que pese a raridade o paraganglioma pré-aortico não-funcionante deve ser lembrado com diagnóstico diferencial com os sarcomas de retroperitônio. Seu tratamento é cirúrgico e apresenta bom prognóstico.RACIONAL: Paraganglioma is a rare neuroendocrine tumor which often diagnosed in the young adult. Generally, paraganglioma produces catecholamines causing adrenergic syndrome. However, more rarely when tumor is nonfunctioning, their symptoms are more associated with an abdominal mass or even pain. In these circumstances, paraganglioma present a difficult diagnosis confounding with retroperitoneal sarcomas. CASE REPORT: The authors present a case of nonfunctioning giant preaortic paraganglioma. This patient had low levels of catecholamines (both seric and urinary. The preoperative diagnosis was done by means computed tomography. This lesion presented as well-vascularized tumor with calcifications and necrotic central area. The patient underwent a surgical resection with good postoperative outcome. To date, one year after surgical

  13. Climatic control on the growth of gigantic gypsum crystals within hypogenic caves (Naica mine, Mexico)?

    Science.gov (United States)

    Garofalo, Paolo S.; Fricker, Mattias B.; Günther, Detlef; Forti, Paolo; Mercuri, Anna-Maria; Loreti, Mara; Capaccioni, Bruno

    2010-01-01

    Three hypogenic caves within the Naica mine of Mexico ( Cueva de los Cristales — CLC, Ojo de la Reina — OR, and Cueva de las Velas — CLV) host spectacular gypsum crystals up to 11 m in length. These caves are close to another shallow cave of the area ( Cueva de las Espadas — CLE), with which they cover a 160 m-deep vertical section of the local drainage basin. Similar to other hypogenic caves, all these caves lack a direct connection with the land surface and should be unrelated with climate. A record of multi-technique fluid inclusion data and pollen spectra from cave and mine gypsum indicates surprisingly that climatic changes occurring at Naica could have controlled fluid composition in these caves, and hence crystal growth. Microthermometry and LA-ICP-Mass Spectrometry of fluid inclusions indicate that the shallow, chemically peculiar, saline fluid (up to 7.7 eq. wt.%NaCl) of CLE could have formed from evaporation, during a dry and hot climatic period. The fluid of the deep caves was instead of low salinity (˜ 3.5 eq. wt.% NaCl) and chemically homogeneous, and was poorly affected by evaporation. We propose that mixing of these two fluids, generated at different depths of the Naica drainage basin, determined the stable supersaturation conditions for the gigantic gypsum crystals to grow. Fluid mixing was controlled by the hydraulic communication between CLE and the other deep caves, and must have taken place during cycles of warm-dry and fresh-wet climatic periods, which are known to have occurred in the region. Pollen grains from a 35 ka-old gypsum crystal of CLC corresponds to a fairly homogenous catchment basin made of a mixed broadleaf wet forest, which suggests precipitation during a fresh-wet climatic period and confirms our interpretation of the fluid inclusion data. The unusual combination of geological and geochemical factors of Naica suggests that other hypogenic caves found elsewhere may not host similar crystals. However, this work shows that

  14. Gigantic landslides versus glacial deposits: on origin of large hummock deposits in Alai Valley, Northern Pamir

    Science.gov (United States)

    Reznichenko, Natalya

    2015-04-01

    As glaciers are sensitive to local climate, their moraines position and ages are used to infer past climates and glacier dynamics. These chronologies are only valid if all dated moraines are formed as the result of climatically driven advance and subsequent retreat. Hence, any accurate palaeoenvironmental reconstruction requires thorough identification of the landform genesis by complex approach including geomorphological, sedimentological and structural landform investigation. Here are presented the implication of such approach for the reconstruction of the mega-hummocky deposits formation both of glacial and landslide origin in the glaciated Alai Valley of the Northern Pamir with further discussion on these and similar deposits validity for palaeoclimatic reconstructions. The Tibetan Plateau valleys are the largest glaciated regions beyond the ice sheets with high potential to provide the best geological record of glacial chronologies and, however, with higher probabilities of the numerous rock avalanche deposits including those that were initially considered of glacial origin (Hewitt, 1999). The Alai Valley is the largest intermountain depression in the upper reaches of the Amudarja River basin that has captured numerous unidentified extensive hummocky deposits descending from the Zaalai Range of Northern Pamir, covering area in more than 800 km2. Such vast hummocky deposits are usually could be formed either: 1) glacially by rapid glacial retreat due to the climate signal or triggered a-climatically glacial changes, such as glacial surge or landslide impact, or 2) during the landslide emplacement. Combination of sediment tests on agglomerates forming only in rock avalanche material (Reznichenko et al., 2012) and detailed geomorphological and sedimentological descriptions of these deposits allowed reconstructing the glacial deposition in the Koman and Lenin glacial catchments with identification of two gigantic rock avalanches and their relation to this glacial

  15. 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

  16. First report of acariasis by Caparinia tripilis in African hedgehogs, (Atelerix albiventris, in Costa Rica Primeiro relato de acariasis por Caparinia tripilis em ouriços Africanos, (Atelerix albiventris, na Costa Rica

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    Andrés Moreira

    2013-03-01

    Full Text Available The African hedgehog is one of the newly imported exotic pets which have been observed with increasing regularity in veterinary clinics in Costa Rica. Despite their popularity, information about their diseases is scarce. Within skin diseases of hedgehogs, mange caused by Caparinia spp. is a common diagnosis in other countries. Two adult African hedgehogs, one male and one female, were brought to a private clinic in Heredia, Costa Rica, with chronic pruritic dermatitis, scabs, nearly complete loss of spines, lethargy, dehydration, and weight loss. During physical exam, deposits of dry seborrhea were taken and processed for diagnosis. Microscopic examination revealed psoroptid mites identified as Caparinia tripilis. This is the first report of the presence of Caparinia tripilis in Costa Rica and, to the authors' knowledge, the rest of Central America. O ouriço africano é um dos animais de estimação exótico, recém-importado que tem sido observado com maior regularidade nas clínicas veterinárias da Costa Rica. Apesar da sua popularidade, informações sobre suas doenças são escassas. Dentre as doenças de pele de ouriços, a sarna causada por Caparinia spp. é um diagnóstico comum nos outros países. Dois adultos ouriços africanos, um macho e uma fêmea, foram levados para uma clínica particular, em Heredia, Costa Rica, com a dermatite pruriginosa crônica, crostas, perda quase completa de espinhos, letargia, desidratação e perda de peso. Ao exame físico, os depósitos de seborreia seca foram retirados e processados para o diagnóstico. O exame microscópico revelou ácaros (psoroptidae identificados como Caparinia tripilis. Esse é o primeiro relato da presença de Caparinia tripilis na Costa Rica e, para conhecimento dos autores, o resto da América Central.

  17. 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

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    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.

  18. 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.

  19. Otredad y ambigüedad: las percepciones que los españoles y los mayas tenían de los africanos en el Yucatán colonial

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    Matthew Restall

    2000-01-01

    Full Text Available Este articulo estudia las actitudes de mayas y espaiíoles hacia las personas de ascendencia africana en Yucatán durante la época colonial. A lo largo de los tres siglos de dominio colonial en esta provincia, las relaciones entre españoles, mayas y negrós se hicieron progresivamente complejas, en tanto que el proceso de miceginación provccó que hubiera más mulatos que negros a finales del periodo colonial y que aumentara la interacción entre negros y mayas, tanto en poblados como en ciudades. A su vez, las actitudes de espaiioles y mayas hacia los africanos se hicieron también más complejas. Este artículo sostiene que dicha complejidad se manifestó como una ambigüedad que a un mismo tiempo perpetuó los estereotipos racistas y reconoció la pertenencia de las personas de ascendencia africana a las redes sociales multiraciales de la colonia. En otras palabras, los negros eran incluidos y excluidos, tanto por los españoles como por los mayas, lo que se manifestó en la formación de las identidades afroyucatecas

  20. Estudo comparativo sobre percepções de características sócio-profissionais de trabalhadores em geral e de imigrantes negros dos PALOP africanos em Portugal

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    Nelson Lima Santos

    2006-08-01

    Full Text Available Neste artigo apresenta-se um estudo comparativo sobre as percepções de características sócio-profissionais (positivas e negativas de trabalhadores em geral e trabalhadores negros africanos, imigrantes de países de língua oficial portuguesa (PALOP, vistas por estes e por portugueses brancos que trabalham com imigrantes negros, numa amostra de 200 residentes de Lisboa, 100 de etnia branca e 100 de negra, de ambos os sexos, desempenhando funções de executante. Para a coleta de dados foi construído um questionário específico, administrado individual e colectivamente no local de trabalho dos participantes.Os resultados obtidos mostram que urge transformar e melhorar as condições sócio-laborais destes imigrantes - tornando mais céleres e transparentes suas condições de legalização e permanência em Portugal, responsabilizando empregadores em particular e, cidadãos em geral, pela denúncia de situações de exploração e ilegalidade - pois a integração social deverá ser sinônimo de convivência e respeito e não de assimilação.

  1. Divertículo gigante de colon: presentación de un caso Giant colonic diverticulum: case report

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    Ezequiel Ochoa

    2008-12-01

    Full Text Available El divertículo gigante de colon (DGC es una rara complicación de la enfermedad diverticular. Se considera divertículo gigante cuando su diámetro supera los 4 cm. Descrito por primera vez en la literatura francesa en el año 1946, se han publicado hasta la fecha 155 casos. Nuestro paciente, de 59 años, refirió clínica de dolor abdominal leve de 4 meses de evolución. Se le solicitó un estudio de colon por enema, el que reveló una formación sacular de 15 cm en colon sigmoideo, de contenido aéreo y cuello corto, a través del cual se opacificó la cavidad con la sustancia baritada, confirmando el diagnóstico de DGC. Al paciente se le realizó, además, tomografía computada y resonancia magnética. El diagnóstico se confirmó con cirugía y estudio histopatológico. Se practicó una resección sigmoidea con DGC y anastomosis colorrectal lateroterminal. El estudio anatomopatológico informó DGC tipo II.Giant colonic diverticulum is a rare diverticular disease complication. It is considered giant when its diameter is longer than 4 cms. It was reported the first time by french authors in 1946 and there is 155 cases reported in world literature. Our patient aged 59 years old, referred four month of abdominal pain. A barium enema was made showing a sigmoid cavity with air and fill of barium contrast with short neck continuing with the colon lumen. It was also studied with CT and MRI. The diagnosis was confirmed by surgery and histopathologic exam. The pathologic report informed giant colonic diverticulum type II.

  2. On the shoulders of giants: Harvey Cushing's experience with acromegaly and gigantism at the Johns Hopkins Hospital, 1896-1912.

    Science.gov (United States)

    Pendleton, Courtney; Adams, Hadie; Salvatori, Roberto; Wand, Gary; Quiñones-Hinojosa, Alfredo

    2011-03-01

    A review of Dr. Cushing's surgical cases at Johns Hopkins Hospital revealed new information about his early operative experience with acromegaly. Although in 1912 Cushing published selective case studies regarding this work, a review of all his operations for acromegaly during his early years has never been reported. We uncovered 37 patients who Cushing treated with surgical intervention directed at the pituitary gland. Of these, nine patients who presented with symptoms of acromegaly, and one with symptoms of gigantism were selected for further review. Two patients underwent transfrontal 'omega incision' approaches, and the remaining eight underwent transsphenoidal approaches. Of the 10 patients, 6 were male. The mean age was 38.0 years. The mean hospital stay was 39.4 days. There was one inpatient death during primary interventions (10%) and three patients were deceased at the time of last follow-up (33%). The mean time to death, calculated from the date of the primary surgical intervention, and including inpatient and outpatient deaths, was 11.3 months. The mean time to last follow-up, calculated from the day of discharge, was 59.3 months. At the time of last follow-up, two patients reported resolution of headache; four patients reported continued visual deficits, and two patients reported ongoing changes in mental status. This review analyzes the outcomes for 10 patients who underwent surgical intervention for acromegaly or gigantism, and offers an explanation for Cushing's transition from the transfrontal "omega incision" to the transsphenoidal approach while practicing at the Johns Hopkins Hospital.

  3. Aggressive tumor growth and clinical evolution in a patient with X-linked acro-gigantism syndrome.

    Science.gov (United States)

    Naves, Luciana A; Daly, Adrian F; Dias, Luiz Augusto; Yuan, Bo; Zakir, Juliano Coelho Oliveira; Barra, Gustavo Barcellos; Palmeira, Leonor; Villa, Chiara; Trivellin, Giampaolo; Júnior, Armindo Jreige; Neto, Florêncio Figueiredo Cavalcante; Liu, Pengfei; Pellegata, Natalia S; Stratakis, Constantine A; Lupski, James R; Beckers, Albert

    2016-02-01

    X-linked acro-gigantism (X-LAG) syndrome is a newly described disease caused by microduplications on chromosome Xq26.3 leading to copy number gain of GPR101. We describe the clinical progress of a sporadic male X-LAG syndrome patient with an Xq26.3 microduplication, highlighting the aggressive natural history of pituitary tumor growth in the absence of treatment. The patient first presented elsewhere aged 5 years 8 months with a history of excessive growth for >2 years. His height was 163 cm, his weight was 36 kg, and he had markedly elevated GH and IGF-1. MRI showed a non-invasive sellar mass measuring 32.5 × 23.9 × 29.1 mm. Treatment was declined and the family was lost to follow-up. At the age of 10 years and 7 months, he presented again with headaches, seizures, and visual disturbance. His height had increased to 197 cm. MRI showed an invasive mass measuring 56.2 × 58.1 × 45.0 mm, with compression of optic chiasma, bilateral cavernous sinus invasion, and hydrocephalus. His thyrotrope, corticotrope, and gonadotrope axes were deficient. Surgery, somatostatin analogs, and cabergoline did not control vertical growth and pegvisomant was added, although vertical growth continues (currently 207 cm at 11 years 7 months of age). X-LAG syndrome is a new genomic disorder in which early-onset pituitary tumorigenesis can lead to marked overgrowth and gigantism. This case illustrates the aggressive nature of tumor evolution and the challenging clinical management in X-LAG syndrome.

  4. Occurrence of gigantic biogenic magnetite during the Paleocene-Eocene Thermal Maximum

    Science.gov (United States)

    Schumann, D.; Raub, T. D.; Kopp, R. E.; Guerquin-Kern, J. L.; Wu, T. D.; Rouiller, I.; Smirnov, A. V.; Sears, S. K.; Lücken, U.; Tikoo, S. M.; Hesse, R.; Kirschvink, J. L.; Vali, H.

    2009-04-01

    et al. 2008] to other PETM locations of the Atlantic margin and to a possible modern analog environment. High surface productivity with low-organic carbon density sediments and meter-scale sedimentary suboxic zones are provided by tropical shelves fed by energetic river systems, such as the Amazon. We inverstigated several magnetic extracts of samples taken from the meter-scale suboxic zones of the Amazone delta system. Sluijs A, Brinkhuis H, Schouten S, Bohaty SM, John CM, Zachos JC, Reichart GJ, Damste JSS, Crouch EM, Dickens GR. 2007. Environmental precursors to rapid light carbon injection at the Palaeocene/Eocene boundary. Nature 450:1218-1221. Kopp RE, Raub TD, Schumann D, Vali H, Smirnov AV, Kirschvink JL 2007. Magnetofossil spike during the Paleocene-Eocene thermal maximum: Ferromagnetic resonance, rock magnetic, and electron microscopy evidence from Ancora, New Jersey, United States. Paleoceanography, doi:10.1029/2007pa001473. Lipper PC, Zachos JC 2007. A biogenic origin for anomalous fine-grained magnetic material at the Paleocone-Eocene booundary at Wilson Lake, New Jesery. Paleoceanography, doi:10.1029/2007pa001471. Schumann D, Raub TD, Kopp RE, Guerquin-Kern JL, Wu TD, Rouiller I, Smirnov AV, Sears K, Lücken U, Tikoo SM, Hesse R, Kirschvink JL, Vali H 2008. Gigantism in unique biogenic magnetite at the Paleocene-Eocene Thermal Maximum. PNAS, 105:17648-17653.

  5. 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

  6. Análise da expressão gênica no tumor ósseo de células gigantes

    OpenAIRE

    Babeto, Erica [UNESP

    2011-01-01

    O tumor ósseo de células gigantes (TCG) é um tumor benigno, que causa destruição osteolítica, com comportamento biológico incerto e com características particulares como um elevado número de células gigantes multinucleadas e comportamento agressivo. A recorrência local do TCG é freqüentemente observada em 20 a 50% dos casos. Mais agravante que a recorrência, é o fato de que após a recidiva, o paciente muitas vezes também apresenta metástases em outros órgãos, principalmente no pulmão. Dessa f...

  7. What Lies Beneath: Sub-Articular Long Bone Shape Scaling in Eutherian Mammals and Saurischian Dinosaurs Suggests Different Locomotor Adaptations for Gigantism

    OpenAIRE

    2013-01-01

    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 tha...

  8. Ultrafast Gigantic Photo-Response in Charge-Ordered Organic Salt (EDO-TTF)2PF6 on 10-fs time scales

    Science.gov (United States)

    Itatani, J.; Rini, M.; Cavalleri, A.; Onda, K.; Ishikawa, T.; Ogihara, S.; Koshihara, S.; Shao, X. F.; Nakano, Y.; Yamochi, H.; Saito, G.; Schoenlein, R. W.

    The initial dynamics of photo-induced phase transition in charge-ordered organic salt (EDO-TTF)2PF6 was investigated using 10-fs near-infrared laser pulses. We observed sub-20-fs gigantic photo-responses (|∆R/R|>100%) due to intra-molecular vibration and a clear signature of a structural bottleneck (~50 fs) for the first time.

  9. 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.

  10. Coexisting diseases modifying each other’s presentation - lack of growth failure in Turner syndrome due to the associated pituitary gigantism

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    Dragović Tamara

    2016-01-01

    Full Text Available Introduction. Turner syndrome presents with one of the most frequent chromosomal aberrations in female, typically presented with growth retardation, ovarian insufficiency, facial dysmorphism, and numerous other somatic stigmata. Gigantism is an extremely rare condition resulting from an excessive growth hormone (GH secretion that occurs during childhood before the fusion of epiphyseal growth plates. The major clinical feature of gigantism is growth acceleration, although these patients also suffer from hypogonadism and soft tissue hypertrophy. Case report. We presented a girl with mosaic Turner syndrome, delayed puberty and normal linear growth for the sex and age, due to the simultaneous GH hypersecretion by pituitary tumor. In the presented case all the typical phenotypic stigmata related to Turner syndrome were missing. Due to excessive pituitary GH secretion during the period while the epiphyseal growth plates of the long bones are still open, characteristic stagnation in longitudinal growth has not been demonstrated. The patient presented with delayed puberty and primary amenorrhea along with a sudden appearance of clinical signs of hypersomatotropinism, which were the reasons for seeking medical help at the age of 16. Conclusion. Physical examination of children presenting with delayed puberty but without growth arrest must include an overall hormonal and genetic testing even in the cases when typical clinical presentations of genetic disorder are absent. To the best of our knowledge, this is the first reported case of simultaneous presence of Turner syndrome and gigantism in the literature.

  11. Ecofisiologia de plantas jovens de mogno-africano submetidas a deficit hídrico e reidratação Ecophysiology of young African mahogany plants subjected to water deficit and rewetting

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    Marcos Paulo Ferreira de Albuquerque

    2013-01-01

    Full Text Available O objetivo deste trabalho foi avaliar a capacidade de plantas jovens de mogno-africano (Khaya ivorensis em recuperar seu status hídrico e trocas gasosas após período de deficit hídrico. Plantas com aproximadamente 315 dias, irrigadas (controle e não irrigadas, foram avaliadas aos 14 dias da suspensão da irrigação e após um, três e sete dias da retomada da irrigação (reidratação. No dia 14, o potencial hídrico foliar de antemanhã (Ψam das plantas estressadas foi reduzido a -2,66 MPa. Com a restrição hídrica, foram observadas reduções significativas no conteúdo relativo de água na antemanhã (redução de 32%, na taxa de assimilação líquida de CO2 (90%, na condutância estomática (95%, na transpiração (93% e na razão entre concentração intercelular e ambiental de CO2 (37%. Durante a reidratação, o status hídrico das plantas estressadas foi restabelecido após três dias. As trocas gasosas também se restabeleceram, mas de forma mais lenta que o status hídrico. Sob deficit hídrico, a concentração de prolina aumentou e a de carboidratos solúveis totais diminuiu. Plantas jovens de mogno-africano são tolerantes ao deficit hídrico moderado.The objective of this work was to evaluate the capacity of young plants of African mahogany (Khaya ivorensis to recover their water status and gas exchange after water deficit. Plants with approximately 315 days, irrigated (control and non-irrigated, were evaluated after water was withheld for 14 days, and after one, three, and seven days of irrigation resumption (rehydration. On day 14, the predawn leaf water potential (Ψam of stressed plants was reduced to -2.66 MPa. With water deficit, significant decreases were observed in predawn relative water content (32% reduction, in net assimilation rate of CO2 (90%, in stomatal conductance (95%, in transpiration (93%, and in intercellular to ambient ratio of CO2 concentration (37%. During rehydration, the water status of stressed

  12. 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%.

  13. La reagrupación familiar de africanos y latinoamericanos en la España mediterránea. Dinámicas y estructuras sociodemográficas

    Directory of Open Access Journals (Sweden)

    Gozálvez Pérez, Vicente

    2012-12-01

    Full Text Available The amount of foreigners authorised to live in Spain as residents between 2006 and 2009 due to family reunification reflects the significance of this type of immigration in the number of new registered foreigners. This research is based on a specific survey carried out on Africans and Latin Americans, who also provide information on the family members who have joined them here, in accordance with reunification laws or not. Africans and Latin Americans have very different dynamics and socio-demographic structures due, amongst other reasons, to the antiquity of their flows, their fertility rates, their command of Spanish, their level of education, their possibility of income, their structure by sex and age, the size of the reunited families, etc. Information is provided on both continental groups and family subgroups —those who reunite the family, spouses, children, parents and other family members— using scales for the group studied and for the geographical area —coastal Catalonia, the Region of Valencia, Murcia and Almeria—. Africans report the most negative structural aspects —Spanish language, education, income, etc.—; nevertheless it is this group that claim to have more firm and generalised intentions of staying in Spain. The conclusions in this paper give an indication of future flows for these two groups.

    Los extranjeros autorizados en 2006-2009 a residir en España por motivos de reagrupación familiar, muestran la importancia que ha alcanzado esta forma de inmigración en el total de nuevos extranjeros empadronados. La investigación se basa en una encuesta específica a reagrupantes africanos y latinoamericanos, que también informan sobre sus familiares reagrupados, hayan utilizado, o no, las leyes de reagrupación. Africanos y latinoamericanos ofrecen dinámicas y estructuras sociodemográficas muy diferentes, a resultas, entre otras causas, de la antigüedad de sus flujos, su fecundidad, su dominio del idioma espa

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

    Science.gov (United States)

    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 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.

  15. 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.

  16. Dorsal resection of a thoracic hemivertebra in a 4-year-old boy with endochondral gigantism. A case report.

    Science.gov (United States)

    Zarghooni, Kourosh; Sobotrke, Rolf; Schmidt, Heinrich; Rollinghoff, Marc; Siewe, Jan; Eysel, Peer

    2010-10-01

    The authors present what appears to be the first case of congenital kyphosis due to a T12 hemivertebra in a four-year-old boy with endochondral gigantism syndrome of unknown origin. Because of his overgrowth, the patient had severe medical and orthopaedic problems and was almost immobile. Prior to surgery, he experienced a rapidly progressive thoracolumbar kyphosis to 600 (T10-L2). MRI of the brain and spine showed critical protraction of the spinal cord and myelopathy from compression at T12. Single-stage posterior resection of the hemivertebra with spinal shortening and dorsal transpedicular instrumentation of T10-L2 was performed. Although the bone tissue was cartilaginous and dysplastic, 420 (30%) correction was achieved along with decompression of the spinal canal. The patient experienced no neurological impairment post-operatively. At follow-up examination 1.5 year after surgery, the patient's movement disorder had improved markedly and he was able to stand and walk. This very rare case demonstrates that single-stage posterior hemivertebra resection and transpedicular instrumentation for correction of congenital kyphosis can be a safe and effective procedure even in a very challenging case.

  17. Reconstrucción cervical tras resección de neurofibroma solitario gigante con colgajo anterolateral de muslo

    Directory of Open Access Journals (Sweden)

    Mauricio Mendieta-Espinosa

    Full Text Available Los tumores de cabeza y cuello son un grupo heterogéneo; los neurofibromas pueden originarse de cualquier nervio independientemente de su localización, incluyendo nervios periféricos o intracraneales y se dividen en 4 tipos. Los solitarios son tumores confinados, espontáneos y prácticamente sin ninguna manifestación. Anatómicamente, los neurofibromas del cuello son relativamente raros, con un crecimiento lento e indoloro. Presentamos el caso de un paciente varón de 41 años de edad, remitido a nuestra consulta por presentar neurofibroma solitario gigante en la base del lado izquierdo del cuello, de 10 cm de diámetro, con zona central ulcerada y sangrados intermitentes, adherido a planos profundos, de 30 años de evolución y que había sido tratado en 3 ocasiones con resecciones parciales y cubertura con colgajo acromial. Practicamos resección completa de la tumoración y reconstrucción inmediata con colgajo anterolateral de muslo, logrando la mejoría estético-funcional de la zona cervical y sin complicaciones.

  18. 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.

  19. 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

  20. 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.

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

    Science.gov (United States)

    Bonnan, Matthew F; Wilhite, D Ray; Masters, Simon L; Yates, Adam M; Gardner, Christine K; Aguiar, Adam

    2013-01-01

    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.

  2. Granuloma periférico de células gigantes: a propósito de 5 casos y revisión de la literatura

    OpenAIRE

    Chaparro Avendaño, Angie Virginia; 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 sex...

  3. A Mixed-Ligand Approach for a Gigantic and Hollow Heterometallic Cage {Ni64 RE96 } for Gas Separation and Magnetic Cooling Applications.

    Science.gov (United States)

    Chen, Wei-Peng; Liao, Pei-Qin; Yu, Youzhu; Zheng, Zhiping; Chen, Xiao-Ming; Zheng, Yan-Zhen

    2016-08-01

    Nanosized aggregations of metal ions shielded by organic ligands possessing both exquisite structural aesthetics and intriguing properties are fundamentally interesting. Three isostructural gigantic transition-metal-rare-earth heterometallic coordination cages are reported, abbreviated as {Ni64 RE96 } (RE=Gd, Dy, and Y) and obtained by a mixed-ligand approach, each possessing a cuboidal framework made of 160 metal ions and a nanosized spherical cavity in the center. Along with the structural novelty, these hollow cages show highly selective adsorptions for CO2 over CH4 or N2 at ambient temperatures. Moreover, the gadolinium analogue exhibits large magnetocaloric effect at ultralow temperatures.

  4. Escisión de un fibroma de células gigantes con láser de diodo: Informe de un caso

    Directory of Open Access Journals (Sweden)

    C.M. Ardila Medina

    Full Text Available Este artículo informa un caso de un fibroma gigantocelular localizado en tejido gingival y mucosa oral. Microscópicamente, la lesión se caracterizó por proliferación de fibras colágenas y fibroblastos gigantes, que se disponían en forma densa e irregular. Además, la superficie de la lesión estaba revestida por epitelio con cambios de hiperqueratosis. Se realizó escisión del fibroma con láser de diodo.

  5. Astrocitoma subependimario de células gigantes asociado a complejo de esclerosis tuberosa: recomendaciones para el diagnóstico oportuno y tratamiento.

    OpenAIRE

    Matilde Ruiz; Sandra Sánchez; Alejandro Rea; Roberto Sanromán; Joao García; Antonio Bravo; Infante Cantú; Hugo Ceja; Ariadna González; María del Mar Sáez

    2015-01-01

    RESUMEN El complejo de esclerosis tuberosa es una enfermedad genética poco frecuente, autosómica dominante con fenotipo y expresión clínica muy variables. Se caracteriza por alteraciones en la migración, diferenciación y proliferación celulares con formación de múltiples tumores benignos llamados hamartomas, las cuales afectan principalmente piel, encéfalo, riñón, ojo, corazón y pulmón. Los astrocitomas subependimarios de células gigantes son tumores benignos de crecimien...

  6. Consecuencias clínicas de la persistencia de actividad inflamatoria en la arteritis de células gigantes. Estudio de factores implicados

    OpenAIRE

    García Martínez, Ana

    2010-01-01

    La arteritis de células gigantes (ACG) afecta arterias de mediano y gran calibre. La inflamación de la carótida y sus ramas da lugar a los síntomas craneales típicos de la enfermedad. Las lesiones inflamatorias expresan gran cantidad de mediadores que provocan la muerte celular y la destrucción de fibras elásticas. El remodelado de la pared arterial puede dar lugar a alteraciones estructurales vasculares, como la aparición de estenosis arteriales que producen síntomas isquémicos o el desarrol...

  7. TROMBO GIGANTE DE AURÍCULA DERECHA COMO CAUSA DE ANGINA Y SÍNCOPE / Giant thrombus in right atrium as a cause of angina and syncope

    OpenAIRE

    José L. Aparicio Suárez; Mario E. Nápoles Lizano; Roberto Bermúdez Yera; Jean L. Chao García; Roger Mirabal Rodríguez; Yuri Medrano Plana

    2012-01-01

    ResumenLas tumoraciones intracardíacas son poco frecuentes, y pueden ser de tipo neoplásicas y no neoplásicas. De estas últimas, los trombos, constituyen las masas más frecuentes. Se presenta un paciente joven, operado en el Cardiocentro "Ernesto Che Guevara" de Villa Clara, Cuba, con antecedentes de trastornos hematológicos desde la infancia, que comienza con episodios de disnea progresiva, angina y síncope; con diagnóstico preoperatorio de tumoración gigante en aurícula derecha que resultó ...

  8. Paciente con complicación poco frecuente de arteritis de células gigantes Rare complication in a patient with giant cell arteritis

    Directory of Open Access Journals (Sweden)

    S. Olivera

    2010-12-01

    Full Text Available La arteritis de células gigantes (arteritis de la arteria temporal es una vasculitis crónica que afecta mayoritariamente a personas de edad avanzada. Aunque se trata de una enfermedad sistémica, se afectan sobre todo las arterias craneales. La complicación más frecuente de esta patología es la pérdida visual. Presentamos el caso clínico de una paciente que padeció varias complicaciones, entre ellas una necrosis lingual, a raíz de serle diagnosticada una arteritis de células gigantes tras iniciar el tratamiento de la misma.Giant cell arteritis (temporal arteritis is a chronic vasculitis that usually affects older people. Although this is a systemic disease, it most often affects the cranial arteries. The most frequent complication of this disorder is visual loss. We report the case of a patient who suffered several rare complications, including tongue necrosis, as a result of being diagnosed with giant cell arteritis following the start of treatment.

  9. Mieloma múltiple y arteritis de células gigantes sin amiloidosis Simultaneous multiple myeloma and giant cell arteritis without systemic amyloidosis

    Directory of Open Access Journals (Sweden)

    Bárbara C. Finn

    2006-12-01

    Full Text Available La amiloidosis sistémica primaria y el mieloma múltiple con amiloidosis primaria se han presentado con características clínicas e histopatológicas que simulan una arteritis de células gigantes. Hasta el momento la asociación se basaba en el rol antigénico del depósito de amiloide sobre las arterias, desencadenando la respuesta inmune que finaliza con una arteritis. Presentamos el primer caso en la literatura de un paciente con mieloma múltiple y arteritis de células gigantes sin amiloidosis sistémica, sugiriendo una relación patogénica entre estas dos entidades. En el caso de nuestro paciente se descartó la presencia de amiloide en la pared arterial, por lo que proponemos que el estímulo para el desarrollo de la arteritis podría ser una excesiva producción de interleuquina 6 fabricada por las células mielomatosas.Primary systemic amyloidosis with clinical and histopathologic features of giant cell arteritis has already been described. The association of multiple myeloma (with primary amyloidosis and giant cell arteritis is also known. We present the first case in the literature of a patient with multiple myeloma and giant cell arteritis without systemic amyloidosis, suggesting a pathogenic relationship between the two diseases.

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

    Directory of Open Access Journals (Sweden)

    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.

  11. 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

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

    Directory of Open Access Journals (Sweden)

    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

  14. Bulla pulmonar gigante

    OpenAIRE

    Costi, David; Prat, Guillermo Daniel; Scarpelli, Franco; Ruiz, Camilo; Lorea, Bárbara

    2016-01-01

    Las bullas pulmonares es la alteración anatomía del parénquima pulmonar caracterizada por la sobre distención de los espacios aéreos distales al bronquio terminal con adelgazamiento, distención y destrucción de la pared alveolar. Estas pueden ser de origen congénito cuando se presentan en edad temprana o adquiridas que se dan en el adulto y generadas por factores de índole ocupacional o por el habito tabáquico. Las bullas al perder su anatomía alveolar normal se comportan cono espacios aéreos...

  15. 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)

  16. 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

  17. Aneurisma gigante da artéria cerebral média Giant aneurysm of the middle cerebral artery: a case report

    Directory of Open Access Journals (Sweden)

    J. Jorge Facure

    1974-03-01

    Full Text Available Relato de um caso de aneurisma gigante da artéria cerebral média esquerda operado com sucesso. O aneurisma que apresentava medidas de 35 x 27 x 23 mm determinou manifestações clínicas de hipertensão intracraniana. A sua exerese total resultou em pronto desaparecimento dos sintomas.A case of giant aneurysm of the left middle cerebral artery, in a 28-year-old right-handed woman, successfuly operated is reported. The aneurysm measur- ing 35 x 27 x 23 mm showed clinical manifestations as a space-occupying lesion. The patient recovered completely after the total excision of the aneurysm.

  18. 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...

  19. Onfalocele gigante. Presentación de un caso en sesión anatomopatológica y consideraciones generales

    OpenAIRE

    María del Carmen Ávila-Iglesias; Pedro Pasquel-García

    2015-01-01

    Paciente masculino producto de la primera gestación de madre de 20 años, originaria de medio rural en Guerrero. Control prenatal irregular en un Centro de Salud. Se efectuó un ultrasonido con aparente alteración del cordón umbilical no especificada, sin recibir manejo ni referencia a tercer nivel. Obtenido por vía abdominal por sufrimiento fetal agudo en clínica rural, presentó llanto inmediato, pesó 2 800 g y se desconocen talla y Apgar al nacer. Un onfalocele gigante fue evidente desde el n...

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

    Directory of Open Access Journals (Sweden)

    Débora Gusmão Melo

    2002-06-01

    Full Text Available 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. Malformações cardíacas podem estar presentes. Nós relatamos 8 pacientes com esta síndrome e descrevemos seus achados clínicos, de neuroimagem e ecocardiográficos.

  1. Generation of "gigantic" ultra-short microwave pulses based on passive mode-locking effect in electron oscillators with saturable absorber in the feedback loop

    Science.gov (United States)

    Ginzburg, N. S.; Denisov, G. G.; Vilkov, M. N.; Zotova, I. V.; Sergeev, A. S.

    2016-05-01

    A periodic train of powerful ultrashort microwave pulses can be generated in electron oscillators with a non-linear saturable absorber installed in the feedback loop. This method of pulse formation resembles the passive mode-locking widely used in laser physics. Nevertheless, there is a specific feature in the mechanism of pulse amplification when consecutive energy extraction from different fractions of a stationary electron beam takes place due to pulse slippage over the beam caused by the difference between the wave group velocity and the electron axial velocity. As a result, the peak power of generated "gigantic" pulses can exceed not only the level of steady-state generation but also, in the optimal case, the power of the driving electron beam.

  2. 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...

  3. 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

  4. Onfalocele gigante. Presentación de un caso en sesión anatomopatológica y consideraciones generales

    Directory of Open Access Journals (Sweden)

    María del Carmen Ávila-Iglesias

    2015-05-01

    Full Text Available Paciente masculino producto de la primera gestación de madre de 20 años, originaria de medio rural en Guerrero. Control prenatal irregular en un Centro de Salud. Se efectuó un ultrasonido con aparente alteración del cordón umbilical no especificada, sin recibir manejo ni referencia a tercer nivel. Obtenido por vía abdominal por sufrimiento fetal agudo en clínica rural, presentó llanto inmediato, pesó 2 800 g y se desconocen talla y Apgar al nacer. Un onfalocele gigante fue evidente desde el nacimiento y fue trasladado por sus propios familiares durante seis horas en malas condiciones, sin aporte enteral ni parenteral y con defecto abdominal sin cubrir. A su ingreso al Instituto Nacional de Pediatría se encontraba en estado de choque, por lo que se le intubó y se le pasaron 2 bolos de cristaloide a 10 mL/kg. Se describió un onfalocele gigante de 10 cm cubierto por gelatina de Wharton, con hígado, intestino delgado y estómago. Se practicó aseo con yodopovidona y se cubrió el defecto con gasa, sin posibilidad de colocar silo debido al gran tamaño del defecto y a la cavidad abdominal estrecha.

  5. Traços do proprium cultural africano e sua relação com o sagrado (Features of African culture and conceptions of the sacred - DOI: 10.5752/P.2175-5841.2013v11n29p88

    Directory of Open Access Journals (Sweden)

    Antonio Geraldo Cantarela

    2013-03-01

    Full Text Available Na esteira da conquista colonial de África, desencadeada na segunda metade do século XIX, alguns antropólogos e missionários europeus, que estabeleceram longa convivência com sociedades de diferentes regiões do continente  africano, lograram realizar as primeiras recolhas e sistematizações acadêmicas do imaginário cultural de comunidades tradicionais. Tomando tal contexto como pano de fundo e contraponto, o artigo destaca algumas vozes de teóricos “nativos” (Ki-Zerbo, Hampaté Bâ, Honorat Aguessy, com vistas a explicitar e discutir alguns traços do proprium cultural africano. Na concepção daquelas culturas tradicionais, a religião, assentada no mesmo arco da cultura oral, funda todos os demais componentes da vida social. Sobre tal pressuposto, o texto discute quatro aspectos principais: a concepção (ingênua de uma unidade cultural africana; a importância da tradição oral para o conhecimento da história e do imaginário das sociedades daquele continente; as imbricações da ação política e das questões culturais;  as polarizações (desnecessárias de Europa versus África para fins de caracterizar adequadamente as culturas africanas. Palavras-chave: Culturas africanas. Religião tradicional africana. Oralidade.   Abstract During the colonial conquest of Africa, which began in the second half of the nineteenth century, some European missionaries and anthropologists, who have established long acquaintance with some societies from different regions of Africa, managed to make the first academic collection and systematization of African traditional thought. Taking such a context as a backdrop and counterpoint, this article highlights some voices of African theorists (Ki-Zerbo, Hampaté Bâ, Honorat Aguessy, in order to explain and discuss some essential features of African culture. Within the traditional African conception, the religion, founded on the same pillars of oral culture, founds all other components of

  6. 巨趾畸形12例临床分析%Digital gigantism of the foot: a clinical study of 12 cases

    Institute of Scientific and Technical Information of China (English)

    王海华; 田光磊; 诸寅; 张友乐; 赵俊会; 田文

    2008-01-01

    Objective To summarize the clinical characteristic and outcome of digital gigantism of the foot.Methods Retrospectively analyze the clinical documents of cases of digital gigantism of the foot.Twelve 12 cases witIl 13 feet in this study included 8 male and 4 female with an average 4.6 years old.All the deformities were found at birth.Multiple toes involved were more than single toe.and tibial toe involved mole than fibular.Forefoot was enlarged.All the phalanges involved and partial metatarsal bones were enlarged.Marked inclease in subcutaneous fat was found in all cases in the operation which infiltrated interossei and articular capsules.The appearance of the nerves and its branches in the foot were normal and fat infiltrating was not discovered.The operation types included debulking,epiphyseal arrest,amputation,nerve stripping and anastomosis.Results Seven cases were followed up with mean periods 25.6 months.Functional evaluation according to a criterion formulated by anthor revealed a result of 2 excellent.2 good and 3 faiL Conclusions Digital gigantism of the foot iS an uncommon congenital deformity of the foot characterized by overgrowth of both the soft-tissue and the osseous elements of the enlarged toe and forefoot.Surgical treatment is the unique method,and the goal is to reduce the size of the foot to allow fitting regular shoes and walking readily.There are several types of operations which to be chosen.The indication.the timing of operative intervention and the selection of operation type should be paid more attention.%目的 总结巨趾畸形的临床特点和手术疗效.方法 回顾性分析12例巨趾畸形患者的临床资料.共12例(13足)患者,其中男性8例,女性4例,平均年龄4.6岁.均在出生时被发现畸形.多趾巨大畸形患者多于单趾畸形的患者,胫侧足趾好发.对应的前足均粗大.巨趾的趾骨均粗长,部分对应的跖骨粗长.术中见所有患者均有皮下脂肪过度增生,侵犯骨间肌和关

  7. Aneurisma gigante da artéria cerebral posterior: (segmento P3 Relato de caso Giant aneurysm of the posterior cerebral artery (P3 segment: case report

    Directory of Open Access Journals (Sweden)

    Ronaldo Pereira

    1995-09-01

    Full Text Available Apresentamos caso de aneurisma gigante do segmento distal (P3 da artéria cerebral posterior. O aneurisma foi tratado microcirurgicamente pela via combinada proposta por Sano com clipagem do ramo terminal da artéria cerebral posterior próximo ao aneurisma. A paciente teve evolução pós operatória favorável, com lesão parcial e transitória do III nervo craniano. Revisão da literatura e discussão a respeito da anatomia e da abordagem cirúrgica são feitas. A raridade desta patologia justifica o relato deste caso.A rare case of giant aneurysm of the P3 segment of the posterior cerebral artery is presented. The aneurysm was acessed through a combined approach proposed by Sano and the aneurysm was treated by proximal clipping. The patient had a good postoperative recovery without any neurological deficit. The anatomy and the operative approaches are discussed and the neurosurgical literature reviewed.

  8. 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.

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

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    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.

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

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    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.

  11. 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.

  12. A probable case of gigantism/acromegaly in skeletal remains from the Jewish necropolis of "Ronda Sur" (Lucena, Córdoba, Spain; VIII-XII centuries CE).

    Science.gov (United States)

    Viciano, Joan; De Luca, Stefano; López-Lázaro, Sandra; Botella, Daniel; Diéguez-Ramírez, Juan Pablo

    2015-01-01

    Pituitary gigantism is a rare endocrine disorder caused by hypersecretion of growth hormone during growing period. Individuals with this disorder have an enormous growth in height and associated degenerative changes. The continued hypersecretion of growth hormone during adulthood leads to acromegaly, a condition related to the disproportionate bone growth of the skull, hands and feet. The skeletal remains studied belong to a young adult male from the Jewish necropolis of "Ronda Sur" in Lucena (Córdoba, Spain, VIII-XII centuries CE). The individual shows a very large and thick neurocranium, pronounced supraorbital ridges, an extremely prominent occipital protuberance, and an extremely large and massive mandible. Additional pathologies include enlargement of the vertebral bodies with degenerative changes, thickened ribs, and a slight increased length of the diaphysis with an increased cortical bone thickness of lower limbs. Comparative metric analysis of the mandible with other individuals from the same population and a contemporary Mediterranean population shows a trend toward acromegalic morphology. This case is an important contribution in paleopathological literature because it is a rare condition that has not been widely documented in ancient skeletal remains.

  13. Gigantism treated by pure endoscopic endonasal approach in a case of McCune-Albright syndrome with sphenoid fibrous dysplasia: a case report.

    Science.gov (United States)

    Sharifi, Guive; Jalessi, Maryam; Sarvghadi, Farzaneh; Farhadi, Mohammad

    2013-12-01

    McCune-Albright syndrome (MAS) is an uncommon polyostotic manifestation of fibrous dysplasia in association with at least one endocrinopathy that is mostly associated with precocious puberty and hyperpigmented skin macules named café-au-lait spots. We present an atypical manifestation of McCune-Albright syndrome in a 19-year-old man with the uncommon association of polyostotic fibrous dysplasia and gigantism in the absence of café-au-lait spots and precocious puberty. He presented with a height increase to 202 cm in the previous 3 years, which had become more progressive in the few months prior. Physical examination revealed only a mild facial asymmetry; however, a computed tomography (CT) scan discovered vast areas of voluminous bones with ground-glass density and thickening involving the craniofacial bones and skull base. Magnetic resonance imaging (MRI) found a right stalk shift of the pituitary with a 20 mm pituitary adenoma. We describe the diagnostic and endoscopic endonasal transsphenoidal approach for excision of the tumor.

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

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    Osvaldo Inácio de Tella Jr

    2006-06-01

    Full Text Available 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-operatória.Cerebral aneurysms are rare in the pediatric age group and differ from adults with aneurysms in size, localization and incidence. We report a 3-year-old boy with giant middle cerebral artery aneurysms who presented with subarachnoid hemorrhage. The patient was submitted to surgical treatment and the postoperative period was uneventful.

  15. Hemangioma hepático gigante asociado a síndrome de Kasabach-Merrit Giant hepatic hemangioma associated with Hodgkin's lymphoma

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    M. Valdés Mas

    2008-08-01

    Full Text Available El hemangioma hepático es el tumor benigno más frecuente del hígado. La gran mayoría de ellos son de pequeño tamaño, asintomáticos y con un pronóstico excelente. En raras ocasiones son de mayor tamaño y pueden estar asociados a una coagulopatía de consumo denominada síndrome de Kasabach-Merrit. Presentamos el caso de un paciente varón joven con un hemangioma hepático gigante y hemangiomatosis múltiple asociado al síndrome de Kasabach-Merrit.Hepatic hemangioma is the most frequent liver's tumor. The majority are small, asymptomatic and have an excellent prognosis. Those larger than 5 cm can be associated to a consumptive coagulopathy called Kasabach-Merrit syndrome. We present a patient with a giant hepatic hemangioma with multiple hemangimatosis associated to Kasabach-Merrit syndrome.

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

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    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.

  17. 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.

  18. Anemia hemolítica autoinmune en un niño con hepatitis de células gigantes Autoimmune hemolytic anemia in an infant with giant cell hepatitis

    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.Autoimmune hemolytic anemia (AIHA) associated with giant cell hepatitis (GCH) is a rare ...

  19. 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

    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...

  20. 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

  1. Nevus melanocítico intradérmico congénito gigante. "El niño tortuga (testudines": Caso clínico Giant congenital melanocytic nevus. "Turtle boy": Case report

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    J.F. Arango Ospina

    2009-09-01

    Full Text Available Presentamos el caso de un paciente de 2 años de edad, conocido en su pueblo, como "el niño tortuga (testudines" debido a la gran similitud con dicho reptil. Desde su nacimiento presentó nevus melanocítico gigante localizado en región torácica posterior, región lumbosacra y lesiones satélites en extremidades y abdomen, de 50 por 40cm de diámetro y color café oscuro; la piel en las zonas afectadas es gruesa con grandes surcos de aspecto corrugado (cerebriforme. El nombre dado al niño se basa en la similitud de sus lesiones con la morfología de una tortuga, ya que el caparazón cubre la zona superior, inferior y lateral del cuerpo de este animal, de la misma forma que el nevus gigante lo hacía en el caso de nuestro paciente. Este caparazón está formado por placas óseas revestidas de placas corneas, que se asemejan a los surcos de aspecto corrugado que conforman el nevus melanocítico gigante. Los estudios clínicos practicados revelaron compromiso cardiovascular, hepático y esplénico, así como una desfavorable evolución y pronostico del cuadro clínico, por lo que esta patología, específicamente para este niño y de acuerdo a la junta Médico-Quirúrgica y valoraciones, fue considerada inoperable.We present the case of a 2 years-old patient, known in his town as "turtle boy"(testudines due to his great simility with this reptile because of his giant congenital melanocytic nevus, located in the posterior and lateral aspect of the chest and in smaller proportion in abdomen and extremities, of 50 by 40cm and dark brown colour. The skin in this zone is thick with great furrows and corrugated aspect. He was called "turtle boy" based on the morphology of the turtle, its shell covers the superior, inferior and lateral zone like in our patient's case. It is formed by bone layers covered by cornea layers, which resemble the furrows and corrugated aspect of the giant congenital melanocytic nevus. Medical investigation reveals

  2. 晚期妊娠合并巨大子宫肌瘤67例手术处理%Surgical treatment of 67 cases of late pregancy complicated with gigantic uterine leiomyoma

    Institute of Scientific and Technical Information of China (English)

    魏璐; 潘玥; 胡茜

    2011-01-01

    Objective The treatment of late pregnancy complicated with gigantic uterine leiomyoma in cesarean section (CS) was investigated. Methods A retrospective case-control study was done to review the clinical data of pregnancy with gigantic uterine leiomyoma (A group), late preganacy with leiomyoma (B group), late pregnancy without leiomyoma (C group). The age, operation time and blood loss were compared. Results The age, operation time, blood loss,low-lying placenta,abnormal fetal position, neonata weight, the time to use the antibiotic were significantly different between group A and group B and group C (P<0. 05). No significant differences on postoperative inpatient period, neonatal asphyxia, peupariun infection were found between group A and group B and C (P>0. 05). Conclusion Myomectomy of gigantic uterine leiomyoma during CS is feasible, but careful perioperative management is very critical.%目的 探讨晚期妊娠合并巨大子宫肌瘤术中的处理方式.方法 分析晚期妊娠合并巨大子宫肌瘤(A组)、晚期妊娠合并子宫肌瘤(B组)及单纯行剖宫产(C组)患者的临床资料,每组均为67例.对患者年龄、手术时间、术中失血量等指标进行比较.结果 A组的年龄、手术时间、术中失血量、低置胎盘、胎位异常、新生儿体重、抗生素使用时间与B、C组相比有统计学差异(P<0.05),但3组间术后住院时间、新生儿窒息率及产褥感染率无明显差异(P>0.05).结论 剖宫产术中同时处理巨大子宫肌瘤是可行的,但必须根据受术者的个体情况加强围手术期的管理.

  3. 妊娠合并巨大子宫肌瘤17例临床分析%Clinical Analysis of 17 Cases of Pregnancy Complicated with Gigantic Uterine Fibroids

    Institute of Scientific and Technical Information of China (English)

    晋兴林; 花怀珍

    2014-01-01

    0bjective:To explore the management of pregnancy complicated with gigantic uterine fibroids in ce-sarean section.Methods:A retrospective case-control study was done to review the clinical data of 17 cases of preg-nancy with gigantic uterine fibroids (A group),17 cases of pregnancy with fibroids (B group), 17 cases of pregnancy without fibroids (C group).The operation time,blood loss,postpartum hemorrhage,peuparium infection and hospital-ization days were compared.Results:The mean operative time in group A was significantly longer than group B、C (P0.05).Conclusions:Myomectomy of gigantic uterine fibroids during Cesarean section is safe and feasible,but careful perioperative management is very critical.%目的:探讨妊娠合并巨大子宫肌瘤的剖宫产术中的处理方式。方法:选择某医院妊娠合并巨大子宫肌瘤17例(A组)、妊娠合并子宫肌瘤17例(B组)及单纯行剖宫产17例(C组)的患者临床资料进行回顾性分析。对手术时间、术中失血量、产后出血情况、产褥感染率、术后住院天数等指标进行比较。结果:研究组A组的手术时间、术中出血量、产后出血例数明显高于对照组B、C组(P0.05)。结论:剖宫产术中同时处理巨大子宫肌瘤安全、可行,但必须强调整个围手术期管理的重要性。

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

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    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.

  5. 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

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    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.

  6. Reducción de la aurícula izquierda y reemplazo de válvula mitral mediante técnica de autotransplante en paciente con aurícula izquierda gigante

    OpenAIRE

    Ríos, Josías; Morón, Julio

    2013-01-01

    El 19% de los pacientes con patología mitral reumática presenta aurícula izquierda gigante (diámetro mayor a 65mm), esta patología ha sido asociada con incremento del riesgo de stroke y de muerte súbita. La indicación de reducción auricular se establece cuando existe compresión de las extructuras vecinas, antecedentes de fenómenos tromboembólicos o en pacientes asintomáticos para restablecer el ritmo sinusal (Cirugía de Maze). Se presenta el caso de una mujer de 63 años con estenosis e insufi...

  7. Escisión de un fibroma de células gigantes con láser de diodo: Informe de un caso Excision of a giant cell fibroma with Diodo's Laser: Report of case

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    C.M. Ardila Medina

    2010-06-01

    Full Text Available Este artículo informa un caso de un fibroma gigantocelular localizado en tejido gingival y mucosa oral. Microscópicamente, la lesión se caracterizó por proliferación de fibras colágenas y fibroblastos gigantes, que se disponían en forma densa e irregular. Además, la superficie de la lesión estaba revestida por epitelio con cambios de hiperqueratosis. Se realizó escisión del fibroma con láser de diodo.This article reports a case of giant cell fibroma located in the gingival tissue and oral mucosa. Microscopically, the lesion was characterized by proliferation of collagen fibers and giant fibroblast, irregular and densely arranged. Beside, the surface was covered by epithelium with hiperqueratosis changes. The excision was done with Diodo's Laser.

  8. Análisis de los polimorfismos de longitud de los fragmentos de restricción (RFLP del gen ribosómico 18S RNA de nutria gigante de río Pteronura brasiliensis

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    Grupo de Investigación en Genética Molecular

    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, las martas y los hurones. La nutria es considerada por elCITES como una especie vulnerable y por la IUCN como especie en peligro de extinción. Por estarazón, el Centro de Biología Molecular del Gimnasio Campestre inicio un proyecto de genética conservacionista 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 manejo dela especie y su hábitat previniendo su extinción.

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

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    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.

  10. Clinical Analysis of Laparoscopic Hysterectomy for Gigantic Uterus (Report of 178 cases)%178例腹腔镜巨大子宫全切术临床分析

    Institute of Scientific and Technical Information of China (English)

    李玲玲; 岳青芬

    2015-01-01

    目的:探讨巨大子宫经腹腔镜切除的安全性、手术技巧和临床价值。方法分析该院178例行经腹腔镜巨大子宫切除术(子宫跃孕12周)的临床资料。结果所有手术均经腹腔镜完成,无一例手术并发症发生。手术时间院(89.4±31.6)min;出血量院(94.5±48.3)mL。平均住院时间4.8 d。结论经腹腔镜巨大子宫切除术安全可行,但应选好适应症,术者具备较高的腹腔镜操作水平。%Objective To investigate the clinical value and operating techniques of laparoscopic hysterectomy for gigantic uter. Methods 178 patients whose uteris were larger than twelve-weeks pmgnant uteri accepted aparoscopic hysterectomy and their clinical data were analyzed retrospectively. Results All operations were performed successfully under laparoseopy. No operating complication happened in any cases.The operating time was (89.4±31.6)min,blood loss in operation was (94.5±48.3)mL and the average hospitalization time was 4.8 days.Conclusion On the basis of proper indication and good operating techniques of the oper-ators, laparoscopic hysterectomy for gigantic uteri is safe and feasible.

  11. Anemia hemolítica autoinmune en un niño con hepatitis de células gigantes Autoimmune hemolytic anemia in an infant with giant cell hepatitis

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    Jessica Gómez

    2012-12-01

    Full Text Available 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.Autoimmune hemolytic anemia (AIHA associated with giant cell hepatitis (GCH is a rare disorder in infants. Few cases have been reported and despite receiving a liver transplant, there is high mortality among patients. AIHA usually precedes the development of liver disease. Early recognition of this association and the administration of immunosuppressive therapy prevent progression of the disease. Keywords: Autoimmune hemolytic anemia, giant cell hepatitis 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 por fallo hepático, a pesar de trasplante. La AHAI suele preceder el desarrollo de la afección hepática. El diagnóstico temprano de esta asociación y el inicio de terapia inmunosupresora evitan la progresión de la enfermedad. Se reporta un niño de 1 año de edad al que se le diagnosticó AHAI al mes y medio de edad y luego desarrolló HCG. Para su manejo, ameritó terapia inmunosupresora con corticoesteroides, inmunoglobulina intravenosa, anticuerpo monoclonal anti-CD20 (Rituximab y, además, plasmeferésis.

  12. Dietary canitine maintains energy reserves and delays fatigue of exercised african catfish (Clarias gariepinus fed high fat diets Carnitina dietética mantem reservas energéticas e evita a fatiga de bagre-africano durante exercício

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    Rodrigo Ozório

    2005-06-01

    Full Text Available Lipids, together with proteins, are traditionally considered as primary fuels during aerobic swimming. The effects of dietary fat and carnitine supplements and exercise on the energy metabolism of juvenile fish were investigated. One hundred African catfish (Clarias gariepinus were fed four isonitrogenous diets containing a fat level of 100 or 190 g kg-1 diet and one of the two levels of carnitine (15 and 1000 mg kg-1. Fish grew from 61 to 162 g in 10 wk. Thereafter, 6 fish per group swam vigorously for 3 h and the results were compared with unexercised groups. Fish receiving 1,000 mg carnitine accumulated 2- to 3-fold more carnitine than fish receiving 15 mg carnitine. Plasma acyl-carnitine level was affected by an interaction between dietary treatment and exercise (P Lipídios e proteínas são tradicionalmente considerados combustíveis primários durante natação aeróbica. Nesse ensaio foi investigado o efeito da suplementação de vários níveis de gordura e carnitina no metabolismo de 100 bagres africanos juvenis (Clarias gariepinus. Os peixes foram arraçoados com quatro dietas isoprotéicas, cada uma contendo 100 ou 190 g gordura kg-1 dieta, e um dos dois níveis de carnitina (15 e 1000 mg kg-1. Os peixes cresceram de 61 a 162 g em 10 semanas. No final do ensaio de alimentação, grupos de seis peixes por tratamento foram induzidos a nadar vigorosamente por 3 h e em seguida vários parâmetros foram determinados no tecido muscular e plasma, e os resultados observados nos grupos exercitados foram comparados com grupos controles (não exercitados. Os peixes arraçoados com 1,000 mg carnitina acumularam de duas a três vezes mais carnitina que os peixes arraçoados com 15 mg carnitina. O nível de acyl-carnitina no plasma foi influenciado pela interação entre os tratamentos dietéticos e exercício físico (P < 0.05. As concentrações de adenosina trifosfato (ATP e fosfocreatina no tecido muscular branco (WM foram mais elevadas em

  13. 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.

  14. 棒球缝合法在腹腔镜下巨大子宫肌瘤剥除术中的应用%Application of baseball suture in laparoscopic myomectomy for gigantic hysteromyoma

    Institute of Scientific and Technical Information of China (English)

    干晓琴; 刘江; 林海; 张凌; 张强; 黄利琼; 张家佳

    2016-01-01

    Objective To observe the clinical effect of the baseball suture in laparoscopic myomectomy for gigantic hysteromy-oma.Methods Ninety-six patients with gigantic hysteromyoma undergoing laparoscopic myomectomy at our department from January, 2013 to December,2015 were randomly divided into research group ( using Lin's baseball suture) and control group ( with classical con-tinuous suture) ,48 cases in each group.The suture time,whole operation time,intraoperative blood loss,postoperative complications and hospital stay were compared between the two groups.Results The average intraoperative blood loss in the research group was signifi-cantly lower than that in the control group (P0.05).No postoperative complications happened in the both groups.Conclusion In laparoscopic myomectomy for gigantic hysteromyoma,baseball suture can reduce the intraoperative blood loss.Therefore,it is a very good method for clinical application.%目的:观察棒球缝合法在腹腔镜下巨大子宫肌瘤剥除术中的应用效果。方法将2013年01月至2015年12月在成都市妇女儿童中心医院妇科接受腹腔镜下巨大子宫肌瘤剥除术的患者96例,采用随机数字表法分为研究组(采用棒球缝合法)和对照组(采用传统连续扣锁缝合法),每组48例,比较两组子宫肌瘤剥除创面缝合时间、手术总时间、术中出血量、住院天数及术后并发症情况。结果研究组患者术中出血量明显低于对照组,差异有统计学意义( P<0.05);两组术中缝合肌瘤剥除创面时间、手术总时间、术后住院天数比较,差异无统计学意义( P>0.05)。两组患者均无术中术后并发症发生。结论在腹腔镜下巨大子宫肌瘤剥除术中采用棒球缝合法可以减少术中出血量,是一种值得临床应用的好方法。

  15. Drainage therapy for gigantic cystic lesions of the jaw%开窗减压术治疗颌骨巨大囊性病变的临床研究

    Institute of Scientific and Technical Information of China (English)

    辛俊彤; 袁荣涛; 卜令学; 贾暮云; 李宁毅

    2011-01-01

    Objective To study the drainage therapy for giganlic cyslic lesions of the jaw. Methods Seven palienls with giganlic cyslic lesions of the jaw in the Deplarlmenl of Oral and Maxillofacial Surgery of the Affiliated Hospital of Medical College in Qingdao U niversily were examnined wilh drainage iherapy from August,2006 to April,2009. They were evaluated wilh a preoperalive panoramic photography and CT. Second operation was taken while the cavity became narrow and small. The left cystic lesion tissue was obtained for pathological examination. Results Six cases with gigantic cystic lesions of the jaw were cured with drainage therapy in an average peri od of 15. 7 months,from five months to twenty-six months. There was no recurrence after one year's follow-up. One case with dentigerous cyst failed with drainage therapy,and then was taken curettage. The cyst wall was found thicker than other cases. Conclusions Drain age therapy was an ideal minimally invasive surgery therapy for gigantic cystic lesions of the jaw. The mechanisms need more studies.%目的 研究开窗减压术治疗颌骨巨大囊性病变.方法 选取7例颌骨巨大囊性病变病例,术前均行X线和CT检查,行开窗减压术治疗.对其治疗前后影像学表现、组织病理学变化进行研究.结果 6例颌骨巨大囊性病变病例,经开窗减压治疗后,囊腔消退,二期手术刮除残余囊壁,随诊1年无复发,平均病程15.7月.另1例含牙囊肿治疗无效,行刮除术.结论 开窗减压术是一种理想的颌骨巨大囊性病变的微创功能治疗方法,其内在的机制尚需进一步研究.

  16. Primer caso en México y América Latina de linfoma anaplásico de células gigantes en paciente con implantes mamarios

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    Cesar Torres-Rivero

    Full Text Available El Linfoma Anaplásico de Células Gigantes (LACG asociado a implantes mamarios es una patología poco frecuente. Desde el primer caso publicado en la década de los noventa, en los últimos años hemos observado un mayor número de casos recogidos en la literatura. Si bien se tiene información de aproximadamente 90 casos publicados en el mundo, algunos autores mencionan la posibilidad de que existan más de 100 o 200 casos, por lo que su presencia ha suscitado mucha controversia, si bien en general se sigue considerando una patología infrecuente. Hasta donde hemos podido conocer, presentamos el primer caso de LACG documentado por un cirujano plástico en México y América Latina, en una mujer de 43 años de edad portadora de implantes mamarios, con historia de asimetría mamaria unilateral por seroma tardío, y en la que tras 2 punciones sin mejoría de la sintomatología se realizó retirada del implante y capsulectomía, confirmando en líquido periprotésico la presencia del LACG.

  17. 大型工程建设项目对血吸虫病传播流行的影响%IMPACT OF GIGANTIC ENGINEERING CONSTRUCTION PROJECTS ON TRANSMISSION AND PREVALENCE OF SCHISTOSOMIASIS

    Institute of Scientific and Technical Information of China (English)

    谢娟; 闻礼永

    2015-01-01

    This article examined the influence on the distribution of Ocomelania, the middle-host of schistosome, the changing by ecological environment, resulted from key engineering construction projects such as water conservancy engineering construction project, wetland engineering construction project and agricultural engineering construction projects. An analysis to the potential risk factors such as the spread of snails and new breeding grounds of snail, caused by all kinds of engineering construction.This paper reviews and discusses how to use the advantage of gigantic engineering construction projects to promote schistosomiasis prevention and control work.%本文综述了我国水利工程、湿地、农业等一系列重大工程建设所引起生态环境变化对血吸虫唯一中间宿主钉螺分布扩散的影响,分析了各工程建设可能导致钉螺扩散,形成新的钉螺孳生地等潜在危险因素,并就如何利用工程建设趋利避害促进血吸虫病防治工作进行了探讨。

  18. PEG模拟干旱胁迫对巨紫荆种子萌发及生长生理的影响%Effects of PEG simulated drought stress on seed germination and growth physiology of Cercis gigante

    Institute of Scientific and Technical Information of China (English)

    凌敏; 杨秀莲; 王良桂

    2015-01-01

    The purpose of this study was to understand the drought tolerance of Cercis gigante seed in germination stage. The seeds were soaked at 80℃ hot water for 12h,then treated with 150 mg/L gibberellin for 12h,and finally stratified at low temperature for one month. After dormancy breaking, the seeds of Cercis gigante seeds were germinated on filter paper in Petri dish gauze under different concentration of PEG solution. Effects of drought stress on seed germination per⁃centage, seedling growth, protective enzyme activity and organic osmoregulation substances were studied.A regression a⁃nalysis was conducted between PEG concentration and the germination rate , radicle length and so on . Results showed that:① Under PEG stress, the seed germination rate, germination index, vigor index, radicle and hypocotyl length showed a trend of rising first and then decline with the aggravating of drought stress,indicating that low concentration (5%) of PEG could promote the seeds germination and growth, whereas high concentrations (10%,20%, 30%) had the inhibition effects.②With the increase of PEG concentration, contents of three kinds of organic regulation substances ( soluble sugar, soluble protein and free proline) and SOD activity in Cercis gigante seedsall showed a trend of decline first and then rising.POD activity showed a trend of rising first and then decline.Thus it could be seen that the drought tolerance of Cercis gigante seeds could be improved by increasing protective enzyme activities and contents of osmotic regulation substances, making the inhibition degree to the minimum.%为研究巨紫荆种子萌发期对水分胁迫的耐受性,以80℃热水处理12 h,150 mg/L赤霉素浸种12 h,低温沙藏1个月,打破休眠后的巨紫荆种子为材料,采用培养皿纱布滤纸萌发的方法研究了不同浓度聚乙二醇( PEG)溶液对其种子萌发、生长、保护酶活性和有机渗透调节物质含量的影响,并对种子的萌

  19. HCV infection in northeastern Brazil: unexpected high prevalence of genotype 3a and absence of African genotypes Infecção pelo vírus da hepatite C no nordeste do Brasil: alta prevalência inesperada do genotipo 3a e ausência de genotipos africanos

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    Raymundo PARANÁ

    2000-10-01

    ína, 28 (12% tinham tatuagem, 15 (7% eram trabalhadores da área da saúde, 5 (2% referiram reutilização de seringas descartáveis, 5 (2% tinham múltiplos fatores de risco e 53 (23% não referiram nenhum fator de risco. O genotipo 1a foi observado em 75 (32%, 1b em 72 (31%, 3a em 61 (26%, 2a em 14 (6%, 5 (2,5% tinham infecção por mais de um genotipo e 5 (2,5% tiveram o genotipo indeterminado. Pacientes com genotipo 1 apresentavam média de idade mais alta (P <0,05 e nenhum fator de risco peculiar esteve associado a um genotipo específico. O genotipo 1 predominou amplamente no nordeste do Brasil, seguido pelo genotipo 3. Nesta população o genotipo 3 não parece estar relacionado ao uso de drogas venosas, em contraste ao que foi reportado nos estudos europeus. Embora 80% da população de Salvador seja composta por população negra ou miscigenada, nenhum genotipo africano foi identificado, o que pode significar que o vírus da hepatite C foi introduzido nesta região via imigração européia. Este estudo demonstra algumas peculiaridades da epidemiologia do vírus da hepatite C no Brasil e fortemente sugere que sua introdução nessa região esteve relacionada à imigração européia e não à africana.

  20. 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

  1. 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

    Directory of Open Access Journals (Sweden)

    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

  2. McCune-Albright syndrome combined with gigantism: clinical characteristics and long-term follow-up%McCune-Albright综合征伴巨人症临床特点及长期随访研究

    Institute of Scientific and Technical Information of China (English)

    许岭翎; 朱惠娟; 李梅; 王鸥; 姜艳; 张化冰; 柴晓峰; 冯凯; 李乃适

    2014-01-01

    Objective To investigate the clinical characteristics,causes of disease and responses to treatment in McCuneAlbright syndrome patients combined with gigantism.Methods Long-term follow-up were performed on two cases of McCune-Albright syndrome combined with gigantism,and in combination with literatures the clinical characteristics were analyzed and discussed.Results Both patients underwent neuronavigator assisted transsphenoidal resection of pituitary tumor.After operation,the levels of GH and IGF-1 were significantly decreased.In case 2,GH and IGF-1 levels returned to normal without recurrence during 3-year follow-up.In case 1,treatment of bromocriptine and long-acting somatostatin were performed;growth was notably inhibited and the levels of GH and IGF-1 were significantly decreased.Both patients received bisphosphonate therapy,and bone lesion progression was effectively controlled.Both patients were diagnosed with hypogonadism at the follow-up.Conclusion Treatment of this disease is a long procedure.Clinician should select individualized and comprehensive treatment measures according to the characteristics of patients.Neuronavigation in transsphenoidal resection of pituitary adenoma operation,long-acting somatostatin and bisphosphonate therapy are important measures to control the disease.%目的 探讨伴有巨人症的McCune-Albright综合征患者的临床特点、病程以及对治疗的反应.方法 长期随访北京协和医院收治的2例伴有巨人症的McCune-Albright综合征患者的临床治疗及实验室检查情况.结果 2例患者均接受了神经导航下经蝶入路垂体瘤切除手术,术后生长激素(GH)、胰岛素样生长因子-1(IGF-1)均明显下降,其中例2完全降至正常,随诊3年未见垂体瘤复发迹象;例1术后接受了溴隐亭和长效生长抑素的治疗,生长速度明显降低,GH和IGF-1下降.2例患者均接受了双膦酸盐治疗,骨骼病变进展均得到了有效控制.2例患者均在病程中出现

  3. 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

    Directory of Open Access Journals (Sweden)

    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.

  4. Parâmetros morfométricos e biológicos de populações monoclonais e multiclonais do pulgão-gigante-do-pinus

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    Susete do Rocio Chiarello Penteado

    2017-01-01

    Full Text Available O pulgão-gigante-do-pinus, Cinara atlantica, originário da América do Norte, foi introduzido no Brasil na década de 1990 e encontra-se amplamente distribuído nos plantios comerciais de pínus. Este estudo teve como objetivo correlacionar os parâmetros morfométricos de insetos oriundos de colônias mono e multiclonais de C. atlantica com seu desempenho reprodutivo em mudas de viveiros comerciais e em progênies de Pinus taeda. Foi registrado o número de ninfas produzidas fêmea dia-1. Após a morte destas fêmeas, foram realizadas medições dos caracteres morfológicos, utilizando o programa, Axion Vision 4,5. O comprimento da tíbia, fêmur posterior e antena foram os parâmetros morfométricos que apresentaram maior correlação com o comprimento do corpo dos insetos, representando 98% da variação total. Com os valores destas variáveis foi criada uma nova variável, denominada “tamanho do inseto”, que foi utilizada para comparação dos tratamentos. Os insetos de colônias multiclonais apresentaram os maiores valores para a maioria dos parâmetros morfométricos e maior produção de descendentes. Insetos maiores e maior produção de ninfas foram observados em mudas originárias dos viveiros comerciais, sugerindo que as progênies estudadas podem apresentar algum fator de resistência que as torna candidatas para uso em programas de manejo integrado desta praga.

  5. Las religiones y culturas de origen africano (Brasil, Cuba, Venezuela a prueba de políticas turísticas y rivalidades ¿ Un desarrollo sostenible ? Religions and cultures of African origin (Brazil, Cuba, Venezuela to test tourism policies and rivalries. A sustainable development? Religions et cultures d'origine africaine (Brésil, Cuba, Venezuela à l'épreuve des politiques touristiques et des rivalités. Un développement soutenable?

    Directory of Open Access Journals (Sweden)

    Montserrat Fitó

    2012-05-01

    Full Text Available Les religions1 d’origine africaine ont été transformées, au Brésil, à Cuba et plus récemment au Venezuela, en instruments pour augmenter la captation de devises, par le biais de programmes présentés par les autorités comme répondant aux normes du développement durable. Mais, tant le contrôle exercé sur ces manifestations culturelles, à des fins de commercialisation, que les rivalités engendrées entre pays, ou entre villes dans certains cas, mènent à une aliénation des acteurs de leur propre culture (après Guillermo Bonfill, contredisant la définition même de “développement durable”.The religions of African origin have been taken in Brazil, in Cuba and more recently in Venezuela as instruments to increase the inflow of currency, in tourism development programs presented by the authorities as sustainable. But the control exercised on them by the State organizations, with marketing purposes, as well as the rivalries between countries, as well as between cities of the same country in some cases, carry an alienation of the culture (according to Guillermo Bonfill's theory of cultural control, questioning the possibility of a balanced development, that is to say a sustainable development.Las religiones de origen africano han sido tomadas en Brasil, en Cuba y más recientemente en Venezuela como instrumento para incrementar la entrada de divisas, en programas de desarrollo del turismo presentados por las autoridades como sostenibles. Pero, tanto el control ejercido sobre ellas por los organismos oficiales, con fines de comercialización, como las rivalidades entre paises, así como en algún caso, entre ciudades de un mismo país, conllevan una enajenación de la cultura (según la teoría del control cultural de Guillermo Bonfill, cuestionando la posibilidad de un desarrollo equilibrado, es decir sostenible.

  6. REMOTE SENSING RESEARCH ON DAGUANGBAO GIGANTIC ROCKSLIDE TRIGGERED BY WENCHUAN EARTHQUAKE%汶川地震触发大光包巨型滑坡遥感研究

    Institute of Scientific and Technical Information of China (English)

    殷跃平; 成余粮; 王军; 王猛; 刘彬; 宋云; 梁京涛

    2011-01-01

    大光包滑坡位于四川省安县高川乡,是汶川Ms8.0级地震触发的规模最大的巨型滑坡.本文采用震前和震后高分辨率遥感数据源,对大光包滑坡滑动前后进行了4期遥感图像对比解译和分析,结合现场调查和地面测绘,对滑坡分区、滑面形态、剪出口位置及滑坡体体积进行了初步研究.将滑坡划分为滑源区、滑坡洼地区、主滑体堆积区、下游堆积区、上游堆积区和前缘堆积区,其中,主滑坡堆积区基本保持了母岩原有结构形态,其岩层产状与基岩大体一致,未明显解体,出露长1100m,宽490m,平均厚215m,体积达4.64×109m3.对比了滑动前后的地形、地貌,以及原矿硐、矿渣、工棚等的位置变化,确定了滑坡边界、滑动方向,滑动距离达1.75km.本文建立了大光包滑坡区1:5000地面数字高程模型(DEM),获得了滑坡堆积区平面分布面积及最大堆积厚度,采用AutoCAD软件分别建立了大光包滑坡滑动前后及滑面的三维实体模型,计算出大光包滑坡最大纵长约4.3km,横宽约3.5km,最大厚度约550m,体积约为11.52~ 11.99×109m3,不仅是我国,也是全球近百年来发生的规模最大的滑坡之一.%The Daguangbao gigantic rockslide is located on the Gaochuan village, Anxia county. It is the hugest landslide triggered by the Wenchuan 8. 0 earthquake on May 12 of 2008. This paper uses four periods of remote sensing data with high resolution before/after the earthquake and ground surveying and mapping data to analyze the basic features of the Daguangbao rockslide. The basic features include the accumulation and movement zoning,the sliding surface and exiting, and the volume. The Daguangbao gigantic rockslide is classified into sliding source, back depression, main bedrock accumulation, down-stream accumulation, up - stream accumulation and front lobe. The main bedrock accumulation remained a structure of parent layered limestone rockmass with slight separation

  7. Granuloma periférico de células gigantes: análisis inmunohistoquímico de la población celular en tres casos clínicos Peripheral giant cell granuloma: immunohistochemical analysis of different markers. Study of three cases

    Directory of Open Access Journals (Sweden)

    Falaschini S

    2007-08-01

    Full Text Available El granuloma periférico de células gigantes (GPCG es una lesión de tejido blando no neoplásica ocasionada por una reacción hiperplásica a consecuencia de un traumatismo o inflamación. Es una lesión reactiva del tejido blando que se desarrolla exclusivamente en la cavidad oral y con una ligera predilección en el sexo femenino. La localización habitual de GPCG es en la región de los premolares y la mucosa de la cresta alveolar edéntula. Se presentan tres casos con GPCG (dos hombres y una mujer con una edad comprendida entre los 25 y 35 años. Todos los pacientes se trataron con resección quirúrgica y ninguno sufrió recidivas. Con el propósito de determinar el posible origen de las células estromales mononucleares y de las células gigantes multinucleares, las muestras de cada caso se estudiaron mediante inmunohistoquímica (marcadores CD-68, CD-34 y α-1 antitripsina con el fin de evaluar la expresión del linaje endotelial y del linaje monocito/macrófago. Los resultados inmunohistoquímicos mostraron una marcada positividad difusa de CD-68 en las células estromales mononucleares y en las células gigantes multinucleadas. Estas últimas resultaron ser inmunonegativas para CD-34 y sólo puntualmente positivas para α-1 antitripsina. Estos resultados sugieren que las cιlulas gigantes multinucleares poseen un fenotipo osteoclαstico, proviniendo del linaje monocito/macrσfago, y que no derivan del linaje de las células endoteliales de los capilares. Se establece la importancia de un exhaustivo diagnóstico y de una exéresis quirúrgica completa de la lesión (curetaje óseo con el propósito de evitar la reabsorción del diente y hueso adyacente.

  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.)

    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...

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

    Directory of Open Access Journals (Sweden)

    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

  10. Giant duodenal ulcer perforation: a case of innovative repair with an antrum gastric patch Perforación de ulcus gigante duodenal: reparación innovadora mediante una plastia del antro gástrico

    Directory of Open Access Journals (Sweden)

    Javier A. Cienfuegos

    2012-08-01

    Full Text Available Backgrounds: the treatment of a perforated giant duodenal ulcer (GUDs represents a formidable surgical challenge regarding the duodenal wall defect repair in severe peritonitis setting. A high incidence of dehiscence and hospital mortality (15-40%- has been reported with the majority of the techniques. We report a case of GUDs perforation successfully treated with a subtotal gastrectomy and a gastric patch with the remnant antrum, for repairing the duodenal defect. Case report: a 63-years-old man with antecedents of peptic ulcer disease presents a large duodenal ulcer perforation with 48 hrs delay and associated with severe peritonitis and a retroperitoneal collection. A subtotal gastrectomy with Billroth II reconstruction and reconstruction of the duodenal defect with a patch of the remnant antrum was carried out. The patient was discharged at 17th postoperative day with good tolerance. Discussion: the duodenal defect repair with a patch of the remant antrum, represents a valid alternative in similar circumstances. To our knowledge, it appears to be the first clinical description of this technique.Antecedentes: el tratamiento de un ulcus duodenal gigante (UDG; > 2 cm perforado entraña una gran dificultad técnica, por la reparación del gran defecto duodenal; y por la peritonitis sobreañadida. Todas las técnicas descritas se asocian con un índice elevado de dehiscencias y una mortalidad del 15-40%. Describimos por primera vez el caso de un UDG perforado, tratado mediante una gastrectomía subtotal y con una plastia del antro gástrico remanente. Caso clínico: varón de 63 años que se interviene de un UDG perforado en la 2ª porción duodenal asociado con peritonitis severa y disección de la gotiera parieto-cólica derecha retroperitoneo. Se realiza gastrectomía tipo Bilroth II y reparación del defecto duodenal mediante una plastia con la pared del antro gástrico remanente. El paciente fue dado de alta a los 17 días. Discusión: la

  11. Lipossarcoma gigante da vulva: relato de caso

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    Priolli Denise Gonçalves

    2003-01-01

    Full Text Available O lipossarcoma é neoplasia rara, originária das células mesenquimais primitivas e, entre os sarcomas, é o tipo histológico mais freqüente. Acomete principalmente os membros, podendo atingir outras regiões, sendo rara a localização genital. Os autores relatam caso de lipossarcoma vulvar em paciente de 27 anos, que apresentava massa de crescimento progressivo que limitava a deambulação. O exame físico mostrava tumor vulvar volumoso e ulcerado. A doente foi submetida à ressecção local, tendo o exame histopatológico diagnosticado lipossarcoma bem diferenciado com margens livres de comprometimento. Atualmente a enferma encontra-se bem, sem recidiva da doença, 24 meses após a cirurgia.

  12. [Gigantic aneurysm of the popliteal artery].

    Science.gov (United States)

    Fernández-Samos, R; Zorita, A; Vázquez, J G; Morán, C; Vaquero, F

    1990-01-01

    A giant popliteal aneurysm case, whose first symptom was an acute ischemia on the limb, caused by thrombosis, which was successfully treated, is reported. Although popliteal aneurysm is not a rare event, the interest of this case is focused on its extraordinary size and unique location.

  13. Cerbral gigantism (Sotos' syndrome)

    Energy Technology Data Exchange (ETDEWEB)

    Dijkstra, P.

    1985-08-01

    The metacarpophalangeal pattern (MCPP) profile in 17 out of 22 patients with Sotos' syndrome was studied throughout the growth period, from 2 weeks to 19 years of age. Two typical MCPP profiles will be described. The first type of profile was found in 13 patients. Although the form of the profile is the same throughout the years, the lengthening of the fingers is most pronounced around 2 years of age. Before and after that period there is a flattening of the curve. The metacarpals are relatively longer below the age of 3 years, above 3 years the lengthening of the proximal phalanges is more pronounced in the profile. The second type of profile was found in 4 patients. This curve is almost a mirror image of the first profile. The fingers are not as long as in the first type and the profile is less pronounced. In one of the 17 patients the transition from the first type to the second type could be demonstrated. One patient had a normal profile.

  14. Ultrafast and Gigantic Spin Injection in Semiconductors

    Science.gov (United States)

    Battiato, M.; Held, K.

    2016-05-01

    The injection of spin currents in semiconductors is one of the big challenges of spintronics. Motivated by the ultrafast demagnetization and spin injection into metals, we propose an alternative femtosecond route based on the laser excitation of superdiffusive spin currents in a ferromagnet such as Ni. Our calculations show that even though only a fraction of the current crosses the Ni-Si interface, the laser-induced creation of strong transient electrical fields at a ferromagnet-semiconductor interface allows for the injection of chargeless spin currents with record spin polarizations of 80%. Beyond that they are pulsed on the time scale of 100 fs which opens the door for new experiments and ultrafast spintronics.

  15. Gigant Eesti Gaas razdajot seti / Artur Tooman

    Index Scriptorium Estoniae

    Tooman, Artur, 1971-

    2004-01-01

    Eesti Gaas sõlmis firmadega, mis on aastate jooksul ehitanud kümneid kilomeetreid gaasitrasse, tähtajatud lepingud. Nüüd on viieteistkümnel firmal gaasijagamise litsents. Majandus- ja kommunikatsiooniministeeriumi kavandatavatest muutustest gaasi müümisel ja transportimisel. Kaart

  16. 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

  17. Spontaneous Resolution for a Giant Pancreatic Pseudocyst. A Case Report Resolución espontánea de un pseudoquiste pancreático gigante. A propósito de un caso

    Directory of Open Access Journals (Sweden)

    Jorge Luis Estepa Pérez

    2011-07-01

    cm., dolorosa y de bordes regulares. El ultrasonido abdominal mostró imagen ecolúcida tabicada de aspecto quístico de 104 X 40 mm, posterior a hígado y anterior al páncreas. En tomografía simple y contrastada de abdomen se observó: lesión hipodensa de 10 X 6 cm., líquida (densidad 10 UH en contacto con el lóbulo hepático izquierdo y estómago, crecimiento hacia abajo y llegando hasta zona del mesogastrio, contornos bien delimitados de paredes finas. Se concluyó como pseudoquiste pancreático gigante. La complejidad de la afección y la repercusión en el estado general de la enferma postergó el tratamiento del pseudoquiste, que en su evolución natural se drenó espontáneamente, sin complicaciones ni recidiva de la lesión.

  18. Diversification of Chilean aquaculture: the case of the giant barnacle Austromegabalanus psittacus (Molina, 1782 Diversificación de la acuicultura chilena: el caso del cirripedio gigante Austromegabalanus psittacus (Molina, 1782

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    Daniel A López

    2012-09-01

    Full Text Available Evidence is presented supporting the technical and economic possibilities of giant barnacle Austromegabalanuspsittacus (Molina, 1782 culture, one of the main alternatives for diversifying aquaculture in Chile. Spat collection from the wild varied between different sites in the north and south of the country and according to type of artificial collector. Growth also varied between sites (greater in the north, technological systems (greater in tubular systems and depths (greater at 4 m. Average commercial size in the national market was reached over a period between 18 and 24 months. A long-line can produce between 7 to 10 gross ton during this period, therefore average annual fisheries production can be reached with only 10 to 30 long-lines, in an area of 1 to 3 ha. There is demand for this resource in the external market, particularly in the Japanese market, either as product similar to "fujit subo" (Balanus rostratus, or as a new resource; the relationship between production costs and price determines that giant barnacle culture has commercial potential. Economic indicators for cultured giant barnacle were as follows: net present value (NPV: US$ 490,000; internal rate of return (IRR: 32%; discounted payback period (DPBP: 4 years. Results obtained suggest the natural bank repopulation option, and the development of mass cultures. Giant barnacle culture is based on biological characteristics that differentiate it from other crustaceans species, as well as simple and economic production technologies and favourable economic projections on external markets.Se presentan evidencias de las posibilidades técnicas y económicas del cultivo del cirripedio gigante o "picoroco", Austromegabalanus psittacus (Molina, 1782. Esta especie es una de las principales alternativas para la diversificación de la acuicultura en Chile. La captación de semilla desde el ambiente varió entre distintos sitios del norte y sur del país y según el tipo de colector

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

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    Albenones José de Mesquita

    2007-09-01

    Full Text Available

    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 10¹ to 1,0 x 10³ CFU/g; MPN of total coliforms was 3 to 15/g; MPN of fecal coliforms was 3 to 7/g. All the values above are in agreement to the national pattern.

    KEY-WORDS: Macrobrachium rosembergii; shrimp; chicken manure.

    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

  20. Granuloma periférico de células gigantes: análisis inmunohistoquímico de la población celular en tres casos clínicos Peripheral giant cell granuloma: immunohistochemical analysis of different markers. Study of three cases

    OpenAIRE

    Falaschini S; Ciavarella, D.; Mazzanti, R; M Di Cosola; Turco, M; Escudero, N.; A. Bascones; Lo Muzio, L.

    2007-01-01

    El granuloma periférico de células gigantes (GPCG) es una lesión de tejido blando no neoplásica ocasionada por una reacción hiperplásica a consecuencia de un traumatismo o inflamación. Es una lesión reactiva del tejido blando que se desarrolla exclusivamente en la cavidad oral y con una ligera predilección en el sexo femenino. La localización habitual de GPCG es en la región de los premolares y la mucosa de la cresta alveolar edéntula. Se presentan tres casos con GPCG (dos hombres y una mujer...

  1. 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"

    Directory of Open Access Journals (Sweden)

    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

  2. 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

    Directory of Open Access Journals (Sweden)

    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.

  3. 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

  4. The comparison of abdominal-wall-lift gasless and convention laparoscopy in myomectomy for gigantic hysteromyoma in posterior wall%无气腹悬吊式腹腔镜与传统气腹腹腔镜对后壁巨大子宫肌瘤剜除术的临床疗效比较

    Institute of Scientific and Technical Information of China (English)

    吴继蓉; 彭晓梅; 陈霞

    2012-01-01

    目的 探讨无气腹悬吊式腹腔镜在困难子宫肌瘤剜除术中的应用价值.方法 对比分析2009年1月~2011年12月在妇产科同期施行无气腹腹腔镜与气腹腹腔镜后壁巨大子宫肌瘤剜除情况,比较两者手术时间、术中出血量、术后排气时间、住院日、住院费用等情况.结果 两组患者术中无并发症发生,无气腹组手术时间(67.6±24.7)min,术中出血量(80.0±50.1)ml,术后排气时间(1.1±0.5)d,平均住院日(7.2±1.8)d,平均住院费用(6274.5±500.4)元;气腹组手术时间(108.1±25.3)min,术中出血量(184.9±56.3)ml,术后排气时间(2.6±0.4)d,住院日(10.2±2.9)d,住院费用(7510.8±624.7)元.组间比较,差异有显著性(均P<0.05).结论 无气腹悬吊式腹腔镜后壁巨大子宫肌瘤剜除术优于传统气腹腹腔镜,可能会成为子宫肌瘤剜除术的标准术式.%Objective To discuss the value of abdominal lift gasless laparoscopy in g myomectomy for gigantic hysteromyoma in posterior wall. Methods Operation time, blood loss, anus exhaust time, the hospital day,and the cost of hospitalization were compared between 30 cases with gigantic hysteromyoma in the uterus back wall undergone laparoscopy without pneumoperitoneum and 30 cases undergone conventional laparoscopy. Results The general conditions (number and size of myoma) of 2 groups were not significantly different. There were no complications in both group. The average operating time (67. 6±24. 7)min, the amount of bleeding (80. 0±50.1)ml, anus exhaust timed. l±0. 5)d, the hospital day(7. 2±1. 8)d,and the cost of hospitalization(6274. 5±500. 4)RMB of Abdominal-wall-lift gasless laparoscopy group were significantly shorter and cheaper than those of convential laparoscopy group (108. 1±25. 3)min, (184. 9± 56.3)ml, (2.6±0.4)d, (10. 2±2. 9)d, (7510. 8±624. 7)RMB (P<0. 05). Conclusion Gasless laparoscopy exhibits more advantages than conventional laparoscopy in myomectomy for gigantic hysteromyoma

  5. 子宫动脉栓塞联合宫腔镜治疗巨大子宫黏膜下肌瘤临床分析%Uterine artery embolization combined with hysteroscopy in treatment of gigantic submucosal fibroids of uterus

    Institute of Scientific and Technical Information of China (English)

    都君君

    2015-01-01

    目的 探讨对巨大子宫黏膜下肌瘤行子宫动脉栓塞联合宫腔镜治疗的临床效果.方法 随机选取本院2013年8月至2014年3月期间收治的巨大子宫黏膜下肌瘤患者64例,按照治疗方案的不同将其分为观察组和对照组.其中对照组患者行宫腔镜电切术,观察组患者则采用子宫动脉栓塞联合宫腔镜进行治疗,对两组患者的临床治疗效果及其并发症的发生情况进行观察对比.结果 观察组患者的手术治疗总有效率为96.88%,明显高于对照组患者(40.63%);观察组患者术后并发症的发生率为12.50%,明显低于对照组患者(40.63%);差异具有统计学意义(P<0.05).结论 采用子宫动脉栓塞联合宫腔镜治疗巨大子宫黏膜下肌瘤,效果显著,有助于彻底清除肌瘤组织,促进患者术后恢复,建议在临床上进一步推广.%Objective To investigate the clinical effect of uterine artery embolization combined with hysteroscopy in the treatment of gigantic submucosal fibroids of uterus.Methods 64 patients with gigantic submucosal fibroids of uterus admitted in our hospital from August 2013 to March 2014 were randomly selected and were divided into an observation group and a control group according to different treatment regimens.The control group was treated with hysteroscopic surgery and the observation group with uterine artery embolization and hysteroscopy.The clinical therapeutic effect and the incidence of relevant complication in both groups were observed and compared.Results The total effective rate of the surgical treatment of the observation group was 96.88%, which was significantly higher than that of the control group (40.63%);the incidence of postoperative complications of the observation group was 12.50%, which was significantly lower than that of the control group (40.63%);the differences were statistically significant (P<0.05).Conclusions Uterine artery embolization combined with hysteroscopy in the

  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. A distância e o conteúdo estelar da região HII gigante G333.1-0.4 - vínculos para a taxa de formação estelar da galáxia

    Science.gov (United States)

    Figuerêdo, E.; Damineli, A.; Blum, R.; Conti, P.

    2003-08-01

    Neste trabalho apresentamos imagens de alta resolução angular da região HII gigante G333.1-0.4 obtidas através dos filtros J, H e K no telescópio de 4-m do CTIO. Este trabalho faz parte de um estudo de regiões HII gigantes no infravermelho próximo que tem por objetivo estudar a natureza da formação de estrelas massivas e traçar a estrutura espiral de nossa galáxia. Nossa determinação da distância é baseada no método da paralaxe espectroscópica de estrelas OB localizadas na seqüência principal de idade zero (ZAMS) do Diagrama HR. No caso de G333.1-0.4, a magnitude aparente das estrelas localizadas na ZAMS indica que a distância não pode ser maior do que o limite inferior determinado por técnica rádio (2,8 kpc). Resultados semelhantes foram encontrados para regiões estudadas anteriormente, reforçando a idéia de que a taxa de formação estelar na Via Láctea é menor do que o determinado a partir de dados rádio. Nossos resultados mais recentes sobre o conteúdo estelar de G333.1-0.4 revelaram vários objetos que possuem cores bastante avermelhadas (H-K > 2,0). Nós identificamos estes objetos usando os diagramas cor-cor e cor-magnitude dos aglomerados. Estes objetos apresentam um forte excesso em emissão na banda K e possivelmente se tratam de estrelas do tipo OB envolvidas por um disco/envelope circumestelar espesso. O estudo da função de massa inical desta região, em conjunto com resultados de nossos trabalhos anteriores, aponta para uma IMF independente da posição galática. A contagem de estrelas nos fornece um valor para o número de fótons no contínuo de Lyman que corrobora com a afirmação de que G333.1-0.4 se encontra mais próxima da menor distância determinada por rádio.

  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. Raeder's syndrome after embolization of a giant intracavernous carotid artery aneurysm: pathophysiological considerations Síndrome de Raeder após embolização de aneurisma gigante de artéria carótida intracavernosa: considerações fisiopatológicas

    Directory of Open Access Journals (Sweden)

    Claudio Esteves Tatsui

    2005-09-01

    Full Text Available We present the case of a 47 years old woman submitted to an endovascular trapping of a left cavernous internal carotid artery aneurysm, in which the distal balloon was inflated, as usually done, within the cavernous segment of the internal carotid artery, different from the proximal one which was inflated inside the carotid canal due to technical problems. Consequently, a clinical picture of Raeder's paratrigeminal neuralgia took place. This is the first case report in the literature with theses characteristics. A review of the anatomic pathways and further considerations about the possible pathophysiological mechanisms involved are presented.Apresentamos o caso de uma mulher de 47 anos submetida a obliteração endovascular de um aneurisma gigante de carótida interna cavernosa à esquerda, no qual o balão distal foi inflado, tal como usual, dentro do segmento cavernoso da artéria carótida interna, diferente do proximal, o qual foi inflado dentro do canal carotídeo devido a problemas técnicos. Conseqüentemente, um quadro clínico de neuralgia paratrigeminal de Raeder se instalou. Este é o primeiro relato na literatura com estas características. Uma revisão das vias anatômicas e maiores considerações a respeito de possíveis mecanismos fisiopatológicos envolvidos são apresentados.

  10. Anastomose entre a artéria carótida externa e a artéria carótida interna supraclinóidea utilizando enxerto de veia safena para tratamento de aneurisma gigante do segmento cavernoso da carótida interna: relato de caso

    Directory of Open Access Journals (Sweden)

    Azevedo Filho Hildo

    2001-01-01

    Full Text Available Procedimentos cirúrgicos alternativos para o tratamento de aneurismas "não clipáveis" da carótida intracavernosa incluem ligadura do vaso ou exclusão do segmento que origina a lesão. Essas técnicas estão associadas a riscos de complicações isquêmicas, mesmo em pacientes com sistema de colaterais funcionante. Portanto, um tratamento adequado requer revascularização encefálica para manter o fluxo sanguíneo nos territórios envolvidos. Relatamos o caso de uma paciente de 47 anos com sintomas e sinais isquêmicos embólicos e paralisia do III nervo craniano causados por aneurisma gigante, parcialmente trombosado, do segmento cavernoso da carótida interna. A paciente foi submetida a ponte anastomótica entre a carótida externa cervical e a carótida interna supraclinoidea utilizando enxerto de veia safena, seguido de exclusão do segmento vascular contendo o aneurisma, com bom resultado e sem complicações.

  11. Geografia, cartografia e o Brasil africano : algumas representações

    OpenAIRE

    Anjos, Rafael Sanzio Araújo dos

    2014-01-01

    Dentre as questões estruturais relacionadas à cultura africana no Brasil que continuam merecendo investigação e conhecimento, destaca-se as relacionadas aos aspectos geográficos e historiográficos da nossa formação territorial, geralmente tratadas sem as referências devidas às matrizes e ancestratlidades africanas “invisíveis” na sociedade brasileira. O paper resgata as principais referências da geopolítica da diáspora África-América-Brasil e a configuração atual da população afrobrasileira c...

  12. USSR Report, International Affairs, Peoples of Asia and Africa,No 6, November-December 1986.

    Science.gov (United States)

    2007-11-02

    83.) Progress has been made in self-sufficiency in such products as vegetables, fruits, fresh pork , chickens and eggs. The principal foods of the...nature of African social development," notes Shauro, "determined to a certain extent the pathological form of the transformation of the attitude

  13. El africanismo español y la labor comunicadora del Instituto de Estudios Africanos

    OpenAIRE

    Lic. Victoriano Darias de las Heras

    2002-01-01

    Cuando a mediados de S. XIX, y siguiendo las huellas de una escogida serie de arriesgados exploradores, Europa inicia la “carrera de África”, culminada en su primera fase con el reparto del continente en la histórica Conferencia de Berlín de 1885, un variado aunque no muy numeroso grupo de entusiastas “africanistas” españoles consideraron que, por razones históricas y geopolíticas, España debería estar presente.

  14. Migrantes africanos en Buenos Aires: Entre estigmatización y exotización

    Directory of Open Access Journals (Sweden)

    Régis Minvielle

    2015-03-01

    Full Text Available African Migrants in Buenos Aires: between Stigma and Exoticization Abstract Since the 1990s decade, but especially since 2000, immigrants coming mostly from West Africa, have gradually weaved the contours of a transatlantic south-south migration device between Africa and Latin America. In Buenos Aires they trade on the streets. This activity was initiated mainly by the Senegalese community.This article aims to expose the stereotypes and the relationships between the Argentine society and the African migrants in order to observe the reception of an unknown population in that part of the continent. To do this research, the ethnographic method and discourse analysis were used. The recent nature of the African migration to Argentina generates clichés and prejudices but the desire for exoticism also gives rise to fascination.

  15. REPRESENTACIONES DE LOS AFRICANOS Y SUS DESCENDIENTES EN LA OBRA DE TOMÁS CARRASQUILLA

    OpenAIRE

    Moreno Tovar, Lina Del Mar

    2012-01-01

    Parte de las preguntas que inspiraron esta tesis surgieron hace un par de años en San Andrés, una pequeña isla colombiana de apenas 26 km 2 ubicada en el mar Caribe a 190 km de la costa nicaragüense y 755 km de Cartagena, la ciudad colombiana más cercana. Junto con las islas de Providencia y Santa Catalina, San Andrés hace parte del único departamento insular colombiano, así como el que presenta mayores contrastes culturales respecto de la Colombia continental, no sólo andina o...

  16. Gibraltar, identidad de un colectivo de origen africano en el Zulia (1820-1840

    Directory of Open Access Journals (Sweden)

    Marisol Rodríguez Arrieta

    2000-01-01

    Full Text Available Gibraltar durante el siglo XIX fue el espacio atípico de la región zuliana. La forma de actuar y de resolver sus problemas al parecer responde al trato dado por las autoridades españolas y crio- llas durante dos siglos de historia esclavista; se constituyó en uno de los puertos más importantes y necesarios para pasar los productos que salían de Maracaibo y los que ésta recibía de Mérida y Tru- jillo. Su localización geográfica privilegiada fue el principal elemento que contribuyó a la creación de su identidad local, el apego a su espacio y las ventajas que este les ofreció permitió en el tiempo crear una micro-región con áreas productivas de gran provecho para los espacios ubicados en sus al - rededores. La defensa de su modo de vida, condujo al colectivo a enfrentarse con el centro de poder provincial; situación que hacía complejo el ejercicio del poder en la capital de la provincia ante la diversidad de demandas y formas de oposición. Las peculiaridades de su proceso histórico: pobla- ción no esclava logró en un período de larga duración definirse como un grupo social con sus pro- pios mecanismos y normativas de defensa y ataque.

  17. 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

  18. 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

  19. 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

    Directory of Open Access Journals (Sweden)

    De Carli, João Paulo

    2008-01-01

    Full Text Available 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 com base em achados clínicos e radiográficos. Em seguida, os cortes histológicos das 61 LCGPs, corados por H. E. , foram analisados para confirmação diagnóstica. Posteriormente, investigou-se a proliferação celular de 15 casos de LCGPs através de contagem e aferição da área de AgNORs (regiões de organização nucleolar e avaliação da imunoexpressão dos marcadores PCNA, Ki-67 e p53. Resultados: Não se constatou diferença na área das AgNORs e na expressão do PCNA entre as LCGPs dos três grupos estudados, e o p53 não foi efetivo na imunomarcação das lesões analisadas. Notou-se diferença estatisticamente significativa no número de AgNORs e na expressão do Ki-67 entre os grupos estudados. Conclusão: Os resultados de AgNOR e Ki-67 sugerem que a agressividade clínicoradiográfica das LCGPs pode ser relacionada com sua atividade proliferativa celular

  20. 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.

  1. 血清叶酸和维生素B12检测在巨幼细胞性贫血诊疗中的作用%Detection of Serum Folate and Vitamin B1 2 in the Role of Gigantic Young Cell Anemia Diagnosis and Treatment

    Institute of Scientific and Technical Information of China (English)

    任从棉; 常娟玲; 李志军

    2014-01-01

    Objective To explore the serum folic acid (FOL)and vitamin B12 (Vit B12)levels in gigantic young cell anemia (MA)in the diagnosis and treatment effect.Methods Select in March 2010 to March 2013,examined with clear cell mor-phology in the diagnosis of 50 patients with gigantic young cell anemia as observation group.Another selection during the same period to hospital for a medical 52 cases of healthy people as control group,observation group treated with FOL and Vit B1 2 8~1 5 d,with SIEMENS SIEMENS ADVIA Centaur CP automatic chemiluminescence immune analyzer to observe group before and after treatment and the control group was used to detect the serum FOL and Vit B1 2 levels,respectively, for all the test results were analyzed.Results Observation group before treatment serum FOL and Vit B12 levels (2.23± 0.11 ng/ml and 125.21±94.14 pg/ml)significantly lower than the control group (5.49± 3.91 ng/ml and 356.70±185.46 pg/ml),differences were statistically significant (t=5.89,P0.05;t=1.51,P>0.05).Conclusion The detection of serum FOL and Vit B12 levels,can be used as a gigantic young cell anemia is the effective means to the diagnosis and treatment effect monitoring.%目的:探讨血清叶酸(FOL)和维生素 B12(Vit B12)水平在巨幼细胞性贫血(MA)诊疗中的作用。方法选取2010年3月~2013年3月,经检查有明确细胞形态学诊断的巨幼细胞性贫血患者50例作为观察组;另选取同期来院进行体检的52例健康人群作为对照组,观察组接受FOL和Vit B12治疗8~15天,用西门子SIEMENS ADVIA Centaur CP全自动化学发光免疫分析仪对观察组治疗前、治疗后及对照组分别进行血清 FOL和 Vit B12水平检测,对所有检测结果进行统计分析。结果观察组治疗前血清 FOL和 Vit B12水平(2.23±0.11 ng/ml和125.21±94.14 pg/ml)明显低于对照组(5.49±3.91 ng/ml和356.77±185.46 pg/ml),差异均有统计学显著性意义(t=5.89,P<0.01;t=7

  2. 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.

  3. Hérnia de disco cervical gigante: relato de caso

    OpenAIRE

    DANTAS FERNANDO LUIZ ROLEMBERG; FAGUNDES-PEREYRA WALTER JOSÉ; ROCHA DURVALINO LOPES; RASO JAIR L.

    1999-01-01

    As doenças do disco intervertebral são muito frequentes na prática neurocirúrgica. No Serviço de Neurocirurgia da Santa Casa de Belo Horizonte, em 1997, 17% das intervenções cirúrgicas foram por hérnia de disco, sendo 7% destas de localização cervical. Apresentamos um caso de hérnia de disco cervical volumosa em paciente de 72 anos, masculino, que apresentava tetraparesia espástica, com hiperreflexia, associada a hipoestesia superficial com nível sensitivo em C5 e retenção urinária. Foi subme...

  4. Tonsilolito gigante: a propósito de un caso

    OpenAIRE

    Silvestre Donat, Francisco Javier; Plá Mocholí, A.; Estellés Ferriol, José Enrique; Martínez Mihi, Victoria

    2005-01-01

    Los tonsilolitos son pequeñas concreciones calcificadas que se forman en las criptas de las amígdalas palatinas formados por sales cálcicas o en combinación con otras sales minerales y que suelen tener pequeño tamaño. En pocas ocasiones han sido descritos tonsilolitos de grandes dimensiones o en localizaciones periamigdalinas. Nosotros presentamos el caso de una mujer de 55 años de edad que tenía sintomatología de disfagia y molestias en la faringe con sensación de cue...

  5. 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.

  6. 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

  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. Microphysics of Hardware or the Gigantism of the Infinitesimally Small

    OpenAIRE

    Ginosatis, Dimitris; Kavvathas, Dionyssis; Golemi, Anastazia

    2012-01-01

    International audience; Το παρόν κείμενο διάλεξης (5.000 λέξεις) εκφωνήθηκε στο πλαίσιο διεθνούς επιστημονικού συνεδρίου με θέμα: "Το νέο sensorium: ενσώματη αντίληψη, προεκτάσεις του ανθρώπου, ψηφιακή επικοινωνία", το οποίο διοργανώθηκε από το Τμήμα Επικοινωνίας, Μέσων & Πολιτισμού του Παντείου Πανεπιστημίου Κοινωνικών & Πολιτικών Επιστημών σε συνεργασία με το Πρόγραμμα Κοινωνίας & Τεχνολογίας και το Ινστιτούτο Coach House του Πανεπιστημίου του Toronto, και διεξήχθη στις 20 και 21 Απριλίου τ...

  9. Microphysics Of Hardware or The Gigantism Of The Infinitesimally Small

    OpenAIRE

    Ginosatis, Dimitris; Kavvathas, Dionyssis

    2012-01-01

    International audience; Το παρόν κείμενο διάλεξης (5.000 λέξεις) εκφωνήθηκε στο πλαίσιο διεθνούς επιστημονικού συνεδρίου με θέμα: Το Nέο Sensorium - Eνσώματη Aντίληψη, Προεκτάσεις του Ανθρώπου, Ψηφιακή Επικοινωνία, το οποίο διοργανώθηκε από το Τμήμα Επικοινωνίας, Μέσων & Πολιτισμού του Παντείου Πανεπιστημίου Κοινωνικών & Πολιτικών Επιστημών σε συνεργασία με το Πρόγραμμα Κοινωνίας & Τεχνολογίας και το Ινστιτούτο Coach House του Πανεπιστημίου του Toronto, και διεξήχθη στις 20 και 21 Απριλίου το...

  10. 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)

  11. 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

  12. Familial gigantism caused by an NSD1 mutation.

    NARCIS (Netherlands)

    Haelst, M.M. van; Hoogeboom, J.J.; Baujat, G.; Bruggenwirth, H.T.; Laar, I. van de; Coleman, K.; Rahman, N.; Niermeijer, M.F.; Drop, S.L.; Scambler, P.J.

    2005-01-01

    A three-generation family with autosomal dominant segregation of a novel NSD1 mutation (6605G --> A, resulting in Cys2202Tyr) is reported. Haploinsufficiency of NSD1 has been identified as the major cause of Sotos syndrome. The overgrowth condition (MIM 117550) is characterized by facial anomalie

  13. 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...

  14. 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.

  15. Aneurisma gigante del apéndice auricular izquierdo

    OpenAIRE

    Francisco L. Moreno-Martínez; González Alfonso,Osvaldo; Lagomasino Hidalgo,Álvaro L; González Díaz,Alejandro; Oliva Céspedes,Carlos; López Bernal,Omaida J

    2006-01-01

    Los aneurismas de la aurícula izquierda son raros y pueden ser congénitos o adquiridos. Los que interesan la pared libre o el apéndice auricular son entidades más raras aún, hasta 2002 sólo existían 49 casos reportados en la aurícula izquierda y 8 en la derecha. La manifestación clínica más frecuente es la aparición de arritmias auriculares incesantes o recurrentes y pueden presentarse embolias sistémicas que pueden dar al traste con la vida del paciente. Presentamos el caso de una paciente a...

  16. Gigantic Copper-Molybdenum Mining Project Contract Signed in Guangdong

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>With the reserves of nearly 1,000,000 tons of copper and approximately 250,000 tons of molybdenum and a total investment of RMB 5 billion, Guangdong Fengkai Yuanzhushan copper-molybdenum mining project contract was inked on October 13, 2011. It is reported that this is China’s second largest open-cast copper molybdenum mine next only to Dexing Copper Mine.

  17. Benign or Malignant? Two Case Reports of Gigantic Prostatic Cyst

    Directory of Open Access Journals (Sweden)

    Jiang Yu

    2016-09-01

    Full Text Available A 60-year-old male with a huge prostate cyst presented with obstruction symptom of urethra and intestinal tract. Complete excision of the cystic prostate failed as a result of the strong adherence and twice operations history, but we confirmed prostate adenocarcinoma and relieved his obstruction symptom. Case 2 was a 77-year-old male with an 8 cm cyst of which biopsy showed prostate cancer in local hospital. He was admitted 18 months later because of intestinal obstruction. Radical resection had a satisfied result of obstruction symptom and PSA. Here we summarized malignant characteristics of cystic lesions in prostate or surrounding structures and management.

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

    Science.gov (United States)

    de Herder, Wouter W

    2012-09-01

    The 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 never donated or even refused to donate their corpses, nor had their relatives given permission. The corpse of the acromegalic giant John Aasen (1890-1938) was voluntarily donated to a physician annex collector of trivia from acromegalic giants. The autopsy on the acromegalic giant John Turner (1874-1911) was performed during his funeral ceremony without the relatives being informed. Only recently, the acromegalic giant Alexander Sizonenko (1959-2012) was made a financial offer during his life in exchange for his body after his death. The case-histories of these 6 patients and also the circumstances that led to the (in-) voluntary donation of their bodies are reviewed.

  19. 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

  20. 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

  1. História da África e dos africanos nas escolas brasileiras: mito ou realidade?

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    Raquel Amorim dos Santos

    2013-01-01

    Full Text Available Este estudo tem como temática as Representações Sociais e Relações Raciais. Analisa as representações sociais de professores acerca das relações raciais no currículo escolar do Ensino Fundamental. Esta pesquisa fundamentou-se no referencial teórico-metodológico em Moscovici (1978 e Jodelet (2001, Gomes (1995, 2006, Coelho (2009 e Gomes e Silva (2006, para a análise das representações sociais, com os primeiros e, com os demais, sobre formação e relações raciais. O estudo é uma pesquisa do tipo descritiva. Utilizamos como instrumento de coleta de dados: documentos oficiais, questionário e grupo focal. Inferimos que o preconceito racial apresenta-se de forma tácita, na sociedade brasileira, o que contribui para a disseminação e ratificação do racismo e discriminação em vários setores sociais, entre os quais a escola. Concluímos que a formação de professores inicial e continuada representa um momento crucial para a formulação de uma Pedagogia que trabalhe com a diversidade cultural. A ausência dessa formação pode inviabilizar a subversão de práticas discriminatórias e estereotipias cristalizadas, em relação ao negro na escola e em seus instrumentos didático-pedagógicos.Abstract This study is subject to Social Representations and Race Relations. It analyzes the social representations of teachers about race relations in the curriculum of elementary school. This research was based on theoretical and methodological Moscovici (1978 and Jodelet (2001, Gomes (1995, 2006, Coelho (2009 and Gomes and Silva (2006, for the analysis of social representations, with the first and with others on training and race relations. The study is a descriptive type. Used as a tool for collecting data: official documents, questionnaires and focus groups. We infer that racial prejudice is presented implicitly, in Brazilian society, which contributes to the dissemination and ratification of racism and discrimination in various social sectors, including the school. We conclude that the initial teacher training and continuous is a crucial time for the formulation of a pedagogy that works with cultural diversity. The absence of such training is critical for its subversion of stereotypes and discriminatory practices crystallized in relation to black at school and in their didactic and pedagogical tools.

  2. Luis de Molina y la esclavitud de los negros africanos en el siglo XVI. Principios doctrinales y conclusiones

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    García Añoveros, Jesús María

    2000-08-01

    Full Text Available One of the most important consequences of Portuguese discoveries was the black slavery business. A most reputed theologist and jurist of the time, Juan de Molina, who had a first-hand knowledge of the subject, made a thorough analysis of the justness of slavery from a Theology and Law perspective, while showing himself opposed to the same. His doctrine set basis for future thought and he must be considered as the first great tratadist on black slavery.

    Una de las consecuencias más importantes de los descubrimientos portugueses en África fue el negocio de los esclavos negros. Luis de Molina, uno de los teólogos y juristas más importantes de su época y con un gran conocimiento del asunto, trató el tema de la licitud de los esclavos negros en amplitud, analizándolo desde la perspectiva de la teología y del derecho, sin omitir su opinión personal contraria a dicha esclavitud. Su doctrina creó escuela y debe ser considerado como el primer gran tratadista de la esclavitud de los negros.

  3. Advecciones de polvo africano sobre la costa central venezolana y sus efectos sobre el desarrollo de la nubosidad

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    Estatio José Gutiérrez Quevedo

    2006-01-01

    Full Text Available Empleando el índice de aerosol, determinado a través de las mediciones del sensor TOMS, se ha realizado un análisis del comportamiento de las magnitudes del parámetro sobre la costa central venezolana en base al período 19972005; los resultados señalaron que se presentaron los máximos valores del índice en los meses de Julio y Agosto correspondientes a la temporada de lluvias. Para este período las masas de aire cargadas de partículas de polvo llegan al Caribe provenientes del desierto del Sahara, como lo demuestra el mapa con la distribución espacial de la mediana del índice para el mes de julio, por el contrarío existe una disminución sustancial en la cantidad de partículas dispersas sobre la troposfera venezolana en la temporada seca en donde las nubes de polvo se desplazan generalmente desde el Sahel. Los productos atmosféricos del sensor MODIS han sido utilizados para determinar la relación entre la concentración de aerosoles y el comportamiento de la nubosidad, presentando ésta una disminución en su desarrollo en presencia de valores altos del índice de aerosol principalmente en los meses de abril y mayo.

  4. Posibilidades abiertas por las nuevas tecnologías en el desarrollo de los cines africanos contemporáneos

    Directory of Open Access Journals (Sweden)

    Beatriz Leal Riesco

    2012-05-01

    Full Text Available From its beginnings with the wave of independence that swept the continent in the middle of the previous century, African cinema has remained subordinate to and dependent upon Western aid. Barring a few prominent exceptions, the effects of this phenomenon have been visible, with films made catering to the tastes of occidental critics and cinephiles while African viewers have been left thirsting for images and sounds of an autochthonous character. Since the 1990’s, thanks to new technologies, African cinema has achieved a previously inconceivable vitality and autonomy. The democratizing effects of the reduction in the cost of production, distribution, and exhibition, as well as the easier accessibility of new technologies to non-professionals, has made of Africa a creative flashpoint, where myriad voices work to create a nuanced and polyphonic imaginary leagues beyond those prejudices and stereotypes of occidental provenance that have overshadowed this continent’s cinematography for more than five decades.

  5. Niños y niñas esclavos de origen africano en la capital novohispana (siglo xvii)

    OpenAIRE

    2013-01-01

    Sin niños, está uno como desnudo. Proverbio yoruba Durante mucho tiempo las poblaciones africanas y afrodescendientes de México fueron olvidadas de la memoria histórica, de la identidad nacional y de las ciencias sociales. Sin embargo, desde hace varias décadas se realizan investigaciones que favorecen el desarrollo del conocimiento de estos grupos no sólo a lo largo de la historia, sino en la actualidad. Los temas que se han abordado son diversos y se ha buscado dar cuenta tanto de los hombr...

  6. Documentación Informativa. Debate 3: El continente africano: Bancos de imágenes y sonido en Internet

    OpenAIRE

    2008-01-01

    Si la documentación convencional es importante, y lo será siempre, la documentación audiovisual representa un territorio aún más grande que el de la documentación convencional, y en este territorio aún queda mucho por descubrir y mucho por hacer.

  7. Nueva África: nueva mirada y nuevo modelo de representación social del continente africano

    OpenAIRE

    Silva Nery, Ana Flávia; Almeida, Verbena Córdula

    2013-01-01

    Partiendo del concepto de representaciones sociales defendido por el teórico rumano Serge Moscovici y considerando el que define Pierre Bourdieu como poder simbólico –el poder de componer el objeto mediante la enunciación–, este trabajo analiza la serie Nueva África (título original en portugués Nova África), presentada por la TV Brasil, emisora que integra la Empresa Brasileña de Comunicación (EBC). Tomando como objeto específico de estudio el episodio en el que se abordó el tema de las inst...

  8. Occurrence of Aelurostrongylus abstrusus (Railliet, 1898 larvae (Nematoda: Metastrongylidae infecting Achatina (Lissachatina fulica Bowdich, 1822 (Mollusca: Gastropoda in the Amazon region Ocorrência de Aelurostrongylus abstrusus (Railliet, 1898 (Nematoda: Metastrongylidae infectando o Achatina (Lissachatina fulica Bowdich, 1822 (Mollusca: Gastropoda na região amazônica

    Directory of Open Access Journals (Sweden)

    Sanny Maria de Andrade-Porto

    2012-06-01

    Full Text Available Achatina fulica or "giant African snail" is an exotic species, considered to be one of the world's hundred most invasive species, causing serious environmental damages. In the present study we report, for the first time, the occurrence of Aelurostrongylus abstrusus infecting A.fulica in the Amazon region. This nematode is described parasitizing mainly the pulmonary system of felines, which causes "aelurostrongilose", also known as feline cardio-pulmonary strongyloidosis. New morphometric data of third stage larvae are presented herein. The present study demonstrated that 40% of all the snails were infected by A. abstrusus. Achatina fulica specimens were collected from three different areas in Manaus namely: rural; east and west areas. The east area presents the highest prevalence of 80%. The large number of A.fulica found in inhabited areas increases the chances of emergent zoonoses, which highlights the need of further studies so as to better control this disease.Achatina fulica ou "caramujo africano" é uma espécie exótica, considerada uma das cem piores espécies invasoras do mundo, causando sérios danos ambientais. No presente estudo foi registrado, pela primeira vez, a ocorrência do Aelurostrongylus abstrusus infectando o A.fulica na região amazônica. Esse nematóide é descrito parasitando principalmente o sistema pulmonar de felinos, causando a "aelurostrongilose", também conhecida como estrongiloidose cardio-pulmonar felina. Novos dados morfométricos de larvas de terceiro estágio são apresentados. Dos 45 caramujos coletados, 40% estavam infectados por larvas de A. abstrusus. Especimens de Achatina fulica foram coletados em três áreas da cidade de Manaus: rural, leste e oeste. A zona leste apresentou a maior prevalência de 80%. O grande número de A.fulica encontrado em áreas habitadas aumenta as chances de ocorrência de zoonoses emergentes e destaca a necessidade de mais estudos para o melhor controle da doença.

  9. Avaliaçao de híbridos de coqueiro (Cocos nucifera L. para produção de frutos e de albúmen sólido fresco Performance of hybrids of coconut palm for production of fruits and solid fresh albumen

    Directory of Open Access Journals (Sweden)

    Paulo Manoel Pontes Lins

    2003-12-01

    Full Text Available Avaliou-se o desempenho de seis híbridos de coqueiro para produção de frutos e de albúmen sólido fresco no Município de Moju, PA. Os híbridos avaliados foram: PB 121 (Anão-amarelo da Malásia x Gigante Oeste Africano; PB 111 (Anão-vermelho de Camarões x Gigante Oeste Africano; PB 141 (Anão-verde do Brasil x Gigante Oeste Africano; PB 123 (Anão-amarelo da Malásia x Gigante de Renel; PB 132 (Anão-vermelho da Malásia x Gigante da Polinésia e PB 113 (Anão-vermelho de Camarões x Gigante de Renel, em delineamento em blocos casualizados com seis repetições. Verificou-se, pela análise de variância, diferença significativa para tratamentos, resultante da heterogeneidade do material genético estudado. As fontes de variação ano e a interação anos x tratamentos foram também altamente significativas, evidenciando que o comportamento dos híbridos foi induzido por aquelas fontes de variação. Considerando o desempenho dos híbridos no período de 9 anos de avaliação para produção de frutos e de albúmen fresco, pode-se recomendar para plantio os híbridos PB 111, PB 113, PB 141 nas condições do Estado do Pará, com vistas a atender às indústrias (albúmen sólido, quanto à venda de cocos "in natura" para consumo de água.The performance of six hybrids of coconut palm were evaluated for fruit and solid fresh albumen production in Moju, State of Pará. The evaluated hybrids were: PB 121 (Dwarf Yellow of Malaysia x West African Giant; PB 111 (Dwarf Red of Cameron x West Afican Giant; PB 141 (Dwarf Green of Brazil x West Aficam Giant; PB 123 (Dwarf Yellow of Malaysia x Renel's Giant; PB 132 (Red Dwarf of Malaysia x (Giant from Polynesia; PB 113 (Dwarf Red of Cameron x Renel's Giant in hazard blocks and six repetitions. It was verified through variance analysis, significancy difference between treatments, as result of the heterogeneity of the studied genetic material. The sources of variation year and the interaction years x

  10. Relations globales entre sédimentation de black shales océaniques et dépôts subséquents de phosphates. L'exemple du Crétacé moyen-supérieur de l'Atlantique centre et nord et du Crétacé supérieur-Eocène de la bordure ouest et nord du bouclier Africano-arabe Global Relations Between the Sedimentation of Oceanic Black Shales and Subsequent Phosphate Deposits. Example of the Middle-Upper Cretaceous in the Central and Northern Atlantic and of the Upper Cretaceous-Eocene on the Western and Northern Edges of the African-Arabian Shield

    Directory of Open Access Journals (Sweden)

    Busson G.

    2006-11-01

    Full Text Available A l'échelle mondiale, les grandes accumulations de phosphates sédimentaires apparaissent irrégulièrement réparties dans le temps. Celles du Crétacé supérieur-Eocène de la bordure ouest et nord du bouclier africano-arabe sont quantitativement exceptionnelles et intéressantes par les réflexions qu'elles suggèrent sur un mécanisme global. On insiste d'abord sur certaines données océanographiques actuelles : flux des matières phosphatées vers l'océan et dans l'océan; répartition des phosphates dans les masses d'eaux océaniques et en particulier dans les eaux euxiniques. Puis quelques théories proposées pour rendre compte du caractère épisodique de la sédimentation phosphatée sont rappelées et critiquées (Strakhov, Fischer, Arthur, Sheldon, etc. . Puis la répartition par pays des quantités de phosphates déposées dans une partie des domaines mésogéen et atlantique est précisée. Elle justifie de focaliser notre attention sur les phosphates marocains, de loin les plus abondants et localisés en position clé. On rappelle néanmoins que la double évolution latitudinale au Crétacé et au Paléogène du Nord vers le Sud dans l'actuel hémisphère nord et du Sud vers le Nord dans l'actuel hémisphère sud rend peu crédibles les interprétations purement latitudino-climatiques de ces dépôts phosphatés. Sur le cas du Maroc, les conditions préalables à cette sédimentation phosphatée sont précisées et discutées : existence de transgressions marines pelliculaires, de séries condensées; rémission des apports détritiques ( le silence de la terre ; confinement (origine et modalité d'action. Ces conditions à elles seules ne peuvent pas expliquer l'extraordinaire flux phosphaté de cette époque. On rappelle alors que les accumulations de matière organique des black shales du Crétacé moyen-supérieur de l'Atlantique -parmi les plus importantes de l'histoire de la terre- ne présentent nulle part leur

  11. Nutrição mineral de populações e híbridos de coqueiro (Cocos nucifera L. cultivados em Bebedouro (SP

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    Teixeira Luiz Antonio Junqueira

    2003-01-01

    Full Text Available Avaliou-se o estado nutricional de sete genótipos de coqueiro (cinco populações: Anão Amarelo de Gramame, Anão Amarelo da Malásia, Anão Vermelho de Gramame, Anão Verde do Jiqui e Gigante Brasileiro da Praia do Forte e dois híbridos: Anão Amarelo de Gramame x Gigante do Oeste Africano e Anão Vermelho de Gramame x Gigante Brasileiro da Praia do Forte, com 2 anos e 4 meses de idade, plantados em Bebedouro (SP. Com o objetivo de monitorar o estado nutricional das plantas e determinar os efeitos do cultivo sobre a fertilidade do solo, analisaram-se tecido vegetal de folhas com idades diferentes (folhas 4 e 9 e solo. Amostras de folha 4, em comparação com as de folha 9, foram mais eficientes para discriminar as populações e híbridos de coqueiro quanto ao seu estado nutricional. As maiores limitações nutricionais dos genótipos em estudo foram as de zinco, potássio, nitrogênio e cobre. Aparentemente, todas as populações e híbridos observados estavam adequadamente nutridos com fósforo, cálcio, boro, ferro e manganês. Como medida mais urgente para a melhoria do estado nutricional das plantas, recomenda-se aumentar a aplicação de Zn. Os principais efeitos do cultivo de coqueiro sobre a fertilidade relacionaram-se com a acidificação do solo na área de aplicação de adubos.

  12. Comparative analysis of the paleogeology along the Atlantic Brazilian and African shores; Analise comparativa da paleogeologia dos litorais atlanticos brasileiro e africano

    Energy Technology Data Exchange (ETDEWEB)

    Cesero, Pedro de; Ponte, Francisco Celso; Northfleet, Airton A. [Universidade do Estado, Rio de Janeiro, RJ (Brazil). Faculdade de Geologia. Dept. de Estratigrafia e Paleontologia ]. E-mail: cesero@uerj.br (and others)

    1997-12-01

    Many professional geologists are not familiar with the origin of certain concepts. This is the reason that when making references, they do not give credit to the real authors. This paper recovers a paper which is essential to understand the evolution of the Brazilian sedimentary basins. This article was first published in 1972 and it was the first one based on plate tectonics which developed a more global vision on the evolution of the basins known up to that time. In some details it is outdated, many interpretations have changed, but the basic ideas about the evolution of the basins are accepted and used today. It should be remembered that the present data were not available and some features - e.g the Pendencia Graben - were unknown; it was the very beginning of basin exploration such as in the Campos and Santos basins. The interpretation premises of the work were developed by a team of geologists working at the SETUP (today CEN-NOR) in Bahia. In the following year, a summary of the original report was presented during the 26th Congress of the Brazilian Geological Society (SBG) held in Belem (Para State). Due to a fault of the organizing committee, the paper was not published in the Congress proceedings, it was only printed as internal reports produced by the DIDEP/SETUP/BA (1972) and the DEXPRO/Rio (1972). In order to publish this paper in the BGP, an attempt was made to maintain the original form, as it should had been printed in the Congress proceedings. Also, in order to make editing easier, figures 11 and 12, the stratigraphic tables for the main Brazilian basins and their African correlates are not being published. It is believed that the understanding of the work will not be affected. We hope that other important papers that are unknown to Brazilian geologists can be restored. The Brazilian and Western African coastlines were orientated by the ancient structural lines. In the Upper Jurassic, continental deposits were accumulated within the Afro-Brazilian trough, extending from the Alagoas-Cameroun to the Almada-Congo areas. The Wealden reactivation established the coastlines along the rift valleys. The first one, from south to north, along the underlying alignments, and the second, from west to east, cutting across and giving rise to a series of lakes. During the Aptian, the first marine transgressions took place, building up two proto-oceanic gulfs. One of them, bounded by the Walvis- Rio Grande and the Pernambuco-Cameroun proto chains, favored the deposition of thick evaporites deposits. To the north, the second gulf maintained an open connection with the ocean. From the Albian to the Turonian, the two continents remained linked. However, due to the progressive separation of the plates, pulsation transgressions took place until full marine conditions were attained. The rupture of the last link between the two plates was during the Turonian and the Santonian. Shearing stresses occurred along the Brazilian northeastern and the Gulf of Guinea coasts, caused by the trans current displacement of the two plates. However, to the south of Pernambuco-Cameroun, tension stresses were always registered while the continents were migrating. When both plates were completely free, the African plate was released from the tension stress, giving rise to the compression of the Benue trough. During the Cenozoic, the uplift of continental belts, adjacent to the coasts, supplied the continental margins and intracratonic basins with sediments. (author)

  13. La participación en asociaciones de los inmigrantes africanos. Vías de interpretación del distanciamiento asociativo

    Directory of Open Access Journals (Sweden)

    Lacomba Vázquez, Joan

    2013-06-01

    Full Text Available This article is focused on the reasons for non-participation of African population in immigrant associations. To understand this question, we conducted semi-structured interviews with persons who decided consciously no to participate in associations and organizations that worked with immigrants. All this work was developed in Catalonia, Valencia and Navarra, from a multilocal research perspective. We interpret the associative detachment, as a voluntary distancing based on the absence of information, lack of time, disenchantment, proprietorship activism, passively waiting, or because they are the only user population. Nevertheless, there are other factors of greater significance, as the political culture or the questioning of leadership in associations.Este artículo se adentra en las razones de la no-participación de la población africana en las asociaciones de inmigrantes. Para ello se utilizan entrevistas semidirigidas realizadas a personas que deciden de manera consciente no participar en las asociaciones y a entidades que trabajan con inmigrantes, en el contexto de un proyecto de investigación mucho más amplio y de carácter multilocal centrado en Cataluña, la Comunidad Valenciana y Navarra. El desapego asociativo, observado a través de las entrevistas, se interpreta como un distanciamiento más o menos voluntario, basado en la ausencia de información, la falta de tiempo, el desencanto, el activismo unipersonal, la espera pasiva o la condición de población únicamente usuaria, pero también en factores de mayor calado como la cultura política o el cuestionamiento de los liderazgos asociativos.

  14. La influencia de la etnicidad en la constitución de los Estados africanos: un estudio centrado en Sudáfrica

    Directory of Open Access Journals (Sweden)

    Bruno, María Sol

    2010-01-01

    Full Text Available Indagar sobre las características de un Estado Nación en África contemporánea nos invita a pensar una serie de asuntos que trascienden su caso particular. Pone en cuestión nociones tan complejas como cultura, Estado, nación, modo de producción… Para problematizar y dinamizar su abordaje resulta útil analizar el funcionamiento de las sociedades precoloniales africanas, los cambios en la conquista y la configuración del Estado poscolonial, y de modo específico el caso de Sudáfrica. Así y todo cruzado de modo transversal por una cuestión compleja: la etnicidad. Si exploramos en ella descubriremos que no puede quedar fuera, ella marca los ritmos de fundamentales aspectos.

  15. Movimientos sociales y políticos africanos. Del siglo XIX al siglo XXI: una visión histórica

    OpenAIRE

    Almisas, Sergio

    2013-01-01

    El artículo realiza un esbozo de la historia de los movimientos políticos y sociales de África desde el siglo XIX al XXI, para entender el desarrollo del continente en su conjunto, realizando una crítica a la visión de África como continente y sociedad pasiva y necesitada de ayuda exterior.

  16. El mundo animal africano de los j??venes cazadores b??ers de Mayne Reid (1857) y su traductor al espa??ol, Ribot y Fonser?? (1870)

    OpenAIRE

    Zarandona, Juan Miguel

    2015-01-01

    En 1870, el pol??tico, escritor y traductor Antonio Ribot y Fonser?? (Vic, 1813 ??? Madrid, 1871), public?? una traducci??n propia de una novela de aventuras para el p??blico juvenil del afamado trotamundos y prol??fico escritor irland??s de la ??poca Thomas Mayne Reid (1818-1833). La traducci??n se titul??: Los j??venes b??ers, versi??n de este original: The Young Y??gers, or, A Narrative of Hunting Adventures in Southern Africa (1857). Gracias a esta traducci??n, el p??blico lector del mome...

  17. Una decolonizzazione mai terminata. Il modello portoghese di colonizzazione in Brasile e la costruzione dell’Altro/a africano/a nell’immaginario razzista

    Directory of Open Access Journals (Sweden)

    Valeria Ribeiro Corossacz

    2016-11-01

    Full Text Available In this paper I analyse how the narrative discourse about the presumed specific characteristics of Portuguese colonization in Brazil moulded racism in Brazil and Portugal. Recently in Portugal there have been episodes of police violence against black people. These episodes have to be considered not only as the product of contemporary racism and its links with neoliberalism effects on marginalized groups, but also as the product of racist and colonial Portuguese ideology. In the case of Brazil, Portuguese colonization is a key element to comprehend the national ideology of mestiçagem, and the false idea of inclusion of African descendants in Brazilian culture that it conveys. The restrictive valorisation (Guillaumin, 1972 of black and indigenous people presents in Brazilian racist ideology is in effect rooted in the Portuguese model of colonization which has been represented as more “human” since the slavery time. Portuguese men are been described as particularly open to mingle with colonized people, especially women, of other cultures and “races”. The notion of lusotropicalism, with its celebrating spirit, has contributed to establish this representation and it has legitimized Portuguese colonization and exploitation also in Africa. These harmful representations of Portuguese colonization and lusotropicalism ideology have thus produced the double effect of negating racism in both Brazil and Portugal.

  18. Cimarrones africanos e indios en la frontera española con los Estados Unidos. El caso de los Seminoles negros de La Florida

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    Jane Landers

    2003-12-01

    Full Text Available This essay explores Andrew Jackson's bloody victories over the Red Stick Creeks and Seminoles of Florida and the triumph of "the White man's republic", with a particular interest in the participation of persons of African descent. The people who would become the Seminoles moved into Florida from Georgia and Alabama in the eighteenth century to fill the vacuum created by the exodus or extinction of Florida's indigenous nations. Initially the Seminoles were staunch allies of the British, but in the late eighteenth century, Chief Payne and Payne’s successors, Micanopy and Bowlegs, reshaped Seminole foreign policy and became allies of the Spanish government.Under their leadership the Seminoles also accepted into their lands many slaves who had run away from the United States and who lived in a sort of feudal arrangement with their "masters" and intermarried with them. These blacks recognized that Anglo rule would return them to slavery, so they, too, became fierce enemies of the Americans and allies of the Spaniards. For about a half century black and blood Seminoles struggled to maintain their autonomy on the volatile Southern frontier, but the United States was firmly committed to an expansionist foreign policy. Its interventions were motivated by territorial ambition, by the lingering fear that Britain would displace the weakened Spanish regimes in the Southeast, and by racial politics. The very success of the Spanish/ Indian/black alliance, in effect, ensured further intervention by Americans. The War of 1812 and the simultaneous Creek War of 1813-14 evolved into a long-term effort to push the Creeks, Seminoles, and blacks out of their settlements in western and central Florida, and eventually to drive out the Spaniards as well. Jackson led the first Seminole War in 1818 and in 1821, when the United States acquired Florida, as governor of the new territorial government he began the removal of the fugitive Creeks, Seminoles, and free blacks from the peninsula.//Este ensayo explora las victorias sangrientas de Andrew Jackson sobre los Red Stick Creeks y los Seminoles de la Florida y el triunfo de “la República del Hombre blanco”, con un interés particular de personas afro descendientes. Aquellos que se convirtieron en Seminoles se trasladaron a Florida desde Georgia y Alabama en el siglo XVIII para llenar el vacío dejado por el éxodo y la extinción de las naciones indígenas de aquella región. Inicialmente los Seminoles fueron firmes aliados de los británicos, pero bien entrado el siglo XVIII, el Jefe Payne y sus sucesores, Micanopy y Piernas arqueadas, le dieron nueva forma a su política exterior y se convirtieron en aliados del gobierno español. Bajo su liderazgo los Seminoles también aceptaron en sus tierras a un gran número de esclavos que habían huido de los Estados Unidos y que vivían en una especie de sociedad “feudal” con sus patrones. Estos negros sabían que el dominio inglés los devolvería a la esclavitud, por lo que también se convirtieron en enemigos feroces de los estadounidenses y en aliados de los españoles. Durante cerca de medio siglo los Seminoles y los negros lucharon por mantener su autonomía en la volátil frontera sur, pero Estados Unidos estaba firmemente comprometido con una política exterior expansionista. Sus intervenciones fueron motivadas por la ambición territorial, por el temor persistente de que Gran Bretaña pudiese desplazar a los débiles regímenes españoles en el sureste, y por la política racial. El éxito de los españoles de los indígenas y de la alianza negra aseguró la posterior intervención estadounidense. La guerra de 1812 y la simultánea Guerra Creek de 1813-14, se convirtieron en un esfuerzo a largo plazo para desplazar a los Creek, los Seminoles y los negros de sus asentamientos en el oeste y centro de Florida, y, finalmente, para expulsar a los españoles también. Jackson dirigió la primera Guerra Seminole en 1818 y en 1821, cuando Estados Unidos adquirió la Florida, como gobernador del nuevo gobierno territorial que expulsó a los Creek fugitivos a los Seminoles y a los negros libres de la península.

  19. Fotografando o mundo colonial africano Moçambique, 1929 Taking pictures of the African Colonial World Moçambique, 1929

    Directory of Open Access Journals (Sweden)

    Ana Cristina Fonseca Nogueira da Silva

    2009-06-01

    Full Text Available O registo fotográfico transformou-se, a partir da segunda metade do século XIX, num instrumento privilegiado de observação e de descrição do mundo. Um instrumento capaz de sugerir a realidade "objectiva" dos elementos fotografados, mas também de registar as realidades imaginadas por quem fotografa, pessoas e instituições que "encomendam" fotografias, por quem as recolhe, selecciona e organiza em álbuns ou caixas. Além de registar "realidades", as fotografias também condicionam a percepção daqueles que as visionam - os seus "públicos alvo", previamente escolhidos, ou outros públicos, mais espontâneos, difusos ou até imprevistos. Nesse sentido, com maior ou menor intencionalidade e com diferentes graus de "sucesso", as fotografias são performativas, fazem parte do processo de construção e de reconstrução da ordem (natural, social do mundo, produzem e/ou reproduzem as classificações e as identificações do espaço social. A "autoridade" do discurso fotográfico, associada à "crença espontânea" na sua veracidade, na possibilidade de registar de forma "objectiva" uma realidade autónoma, neutra, independente do sujeito que fotografa, reforça ainda mais esta sua dimensão prescritiva. O que pretendo com este texto é, partindo dos sentidos que atrás expus, ensaiar uma interpretação sobre o modo como foi organizado o mundo colonial moçambicano e classificadas as suas populações num conjunto de álbuns fotográficos dos finais da década de 20 do século XX.The photographic record has become, from the second half of the nineteenth century, a privileged instrument of observation and description of the world. An instrument able to suggest the "objective" reality of the elements photographed, but also to record the realities imagined by those photographers, people and institutions that "ordered" the photos, and also by those who collect, select and organize them into albums or boxes. In addition to record "reality", the photographs also influence the perception of those whom the photos were taken for - their "target audiences", previously chosen, or other public, more spontaneous, diffuse or even unexpected. In this sense, more or less intentional and with different degrees of "success", the photographs are performing, are part of the construction and reconstruction of the order (natural, social of the world, producing and/or reproducing the classifications and identification of the social space. The "authority" of the photographic discourse, associated with "spontaneous belief" in its truthfulness, in the possibility of registering an "objective" reality that is independent and neutral from the subject that is pictured, strength their prescriptive dimension. My objective with this text is to try to achieve an interpretation on how was organized the colonial Mozambique world and its people was classified using a set of photographic albums from the end of the second decade of the XX century.

  20. Consumo da costa africana: comunicações entre os portos turísticos sul-africanos do oceano Índico

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    Pamila Gupta

    2015-12-01

    Full Text Available Do início até meados do século XX, os cruzeiros turísticos ao longo da costa sul-africana eram uma atividade de lazer popular, empreendida pelas elites (brancas europeias (predominantemente os britânicos, americanas e sul-africanas, com paradas que incluíam diversas cidades portuárias do oceano Índico, como Cidade do Cabo e Durban, na África do Sul, e Lourenço Marques e Beira, no Moçambique português. Considerando as cidades portuárias anteriormente mencionadas como cidades-gêmeas em relação aos seus entrelaçados passados coloniais e turísticos e como funcionando dentro de um “corredor cultural” regional distinto (NUTALL, 2009 da África do Sul, este artigo explora uma série de portos de lazer interligados via cruzeiros de passageiros. A base da minha navegação histórica são os anuários de turismo produzidos pelas companhias de cruzeiro marítimo Union-Castle Line e serviço Round África em 1939 e 1949, respectivamente. A justificativa é que esses guias de viagem servem como entrada ao microcosmo cosmopolita de barcos de cruzeiro, o que os torna inestimáveis para entender a história do lazer (concomitantemente aos bens de consumo e publicidade relacionados na África do Sul.

  1. O ‘indígena’ africano e o colono ‘europeu’: a construção da diferença por processos legais1

    OpenAIRE

    Meneses, Maria Paula G.

    2013-01-01

    As representações da história medeiam as relações sociais e os processos identitários, sendo instrumentais na criação e gestão identitária, ao determinar, de forma fundamental, que projectos e perspectivas são vistos como legítimos e validados através de actos de memória. As lutas pelas memórias no reconstituir de sentidos e de novos espaços geopolíticos continuam marcadas pelos impactos da fractura abissal colonial moderna. Numa leitura que privilegia Moçambique como espaço de referência, es...

  2. O ‘indígena’ africano e o colono ‘europeu’: a construção da diferença por processos legais

    OpenAIRE

    Meneses, Maria Paula G.

    2010-01-01

    As representações da história medeiam as relações sociais e os processos identitários, sendo instrumentais na criação e gestão identitária, ao determinar, de forma fundamental, que projectos e perspectivas são vistos como legítimos e validados através de actos de memória. As lutas pelas memórias no reconstituir de sentidos e de novos espaços geopolíticos continuam marcadas pelos impactos da fractura abissal colonial moderna. Numa leitura que privilegia Moçambique como espaço de referência, es...

  3. Da partilha as independências: o continente africano nos livros didáticos de Geografía do Brasil (1890-2003

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    Rosemberg Ferracini

    2011-06-01

    Full Text Available Este texto es un resumen de la tesis doctoral en curso. Nuestro objeto de estudio es investigar la presencia de África en los libros de texto de Geografía en el período 1890-2003. Tenemos como objetivo discutir cómo este contenido escolar fue publicado, por ejemplo, con un enfoque de dominación territorial. Esto nos lleva a entender otras categorías como la de guerra, poder, raza, etnia, civilización y lo salvaje. El análisis se divide en cinco partes, con la elección de un libro por período, en función de su difusión entre el público estudiantil. La bibliografía de la investigación está disponible en el Laboratorio de Ciencias Humanas de la Facultad de Educación y en el Laboratorio de libros de texto de la Facultad de Filosofía y Humanidades de la Universidade de São Paulo.

  4. China and the African Internet: Perspectives from Kenya and Ethiopia / China y el Internet africano: Perspectivas desde Kenia y Etiopía

    Directory of Open Access Journals (Sweden)

    Iginio Gagliardone

    2013-11-01

    Full Text Available Through the lens of China in Africa, this paper explores the transformations in the relationship between the Internet and the state. China’s economic success, impressive growth of Internet users and relative stability have quietly promoted an example of how the Internet can be deployed within the larger political and economic strategies of developing states, moving beyond the democratization paradigm promoted in the West. New evidence suggests that this model is becoming increasingly popular, but it is not clear why and how it is spreading. Through a case study comparison of an emerging democracy, Kenya, and a semi-authoritarian country, Ethiopia, where China has recently increased its involvement in the communications sector, this paper investigates whether and how the ideas of state stability, development and community that characterize the strategies pursued by the Chinese government are influencing and legitimizing the development of a less open model of the Internet. It analyses how new ideas, technologies and norms integrate with existing ones and which factors influence their adoption or rejection. It is based on fieldwork conducted in Ethiopia and in Kenya between 2011 and 2013, where data was collected through mapping Internet related projects involving Chinese companies and authorities, analysing Internet policies and regulations, and interviewing officials in Ministries of Communication, media lawyers, Internet activists, and Chinese employed in the media and telecommunication sector in Kenya and Ethiopia.Desde la óptica de China en África, este artículo explora las transformaciones en la relación entre Internet y el estado. El éxito económico de China, el impresionante crecimiento de usuarios de Internet y estabilidad relativa ha promovido un ejemplo tranquilo de cómo Internet puede ser desplegado dentro de las más amplias estrategias políticas y económicas de los estados en desarrollo, más allá del paradigma de la democratización promovida en Occidente. Existen nuevas evidencias que sugieren que este modelo está siendo cada vez más popular, pero no está claro por qué y cómo se está extendiendo. A través de un estudio de caso comparativo de una democracia emergente, Kenia, y un país semi-autoritario, Etiopía, donde China ha aumentado recientemente su participación en el sector de las comunicaciones, este trabajo investiga hasta qué punto y de qué manera las ideas de la estabilidad del Estado, el desarrollo y la comunidad que caracterizan las estrategias adoptadas por el gobierno chino están influyendo y legitimando el desarrollo de un modelo menos abierto de Internet. Se analiza cómo las nuevas ideas, tecnologías y normas se integran con las ya existentes y qué factores influyen en su adopción o rechazo. El artículo se basa en el trabajo de campo llevado a cabo en Etiopía y en Kenia entre 2011 y 2013, donde se recogieron datos a través del análisis de proyectos relacionados con Internet en los que participan empresas y autoridades chinas, así como el estudio de las políticas y reglamentos de internet, y complementando con entrevistas a funcionarios de los Ministerios de Comunicación, especialistas en derecho de las comunicaciones, activistas de Internet, así como profesionales chinos del sector de las telecomunicaciones en Kenia y Etiopía.

  5. Rhinometry: spectrum of nasal profile among Nigerian Africans Rinometria: espectro do perfil nasal entre os africanos da Nigéria

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    Rabiu O. Jimoh

    2011-10-01

    Full Text Available Nasal parameters measurements are useful in anthropology to distinguish people into racial and ethnic groups. MATERIALS AND METHODS: A cross-sectional survey among Nigerians aged 18 to 70 years of Nigerian parentage randomly selected at the ENT Clinic of the University of Ilorin teaching hospital (U.I.T.H., Ilorin, Nigeria without gender discrimination had measurement of their nasal parameters done using a sliding caliper: Nasal height, width, tip protrusion, alar thickness, nasal septal thickness and nares diameter. RESULTS: 105 subjects were seen, the age range 18 to 70 years (mean of 28.63 + 13.06 years. There was 58 males and 47 females with a male/female ratio of 1.2:1. The mean nasal width/height (Nasal index -NI was 90.7 in males and 88.2 in females. Males had a higher NI compared to female (p As medidas de parâmetros nasais são úteis em antropologia para distinguir pessoas em grupos étnicos e raciais. MATERIAIS E MÉTODOS: Pesquisa transversal entre nigerianos com idades entre 18 e 70 anos, filhos de pais nigerianos, aleatoriamente selecionados na clínica de otorrinolaringologia do Hospital Universitário de Ilorin (U.I.T.H., Ilorin, Nigéria; sem discriminação de gênero, tiveram seus parâmetros nasais medidos usando-se um compasso deslizante: altura nasal, largura, protrusão da ponta, espessura alar, espessura do septo nasal e diâmetro das narinas. RESULTADOS: 105 indivíduos foram avaliados, e suas idades variaram entre 18 e 70 anos (média de 28,63 + 13,06 anos. Havia 58 homens e 47 mulheres, com coeficiente entre homens de mulheres de: 1.2:1. A medida largura/ altura nasal média (Índice nasal - IN foi de 90,7 em homens e 88,2 em mulheres. Os homens tiveram IN mais alto quando comparados às mulheres (p < 0,03. O tipo mais comum de variabilidade nasal foi o Tipo A (70,5%, Platirrinia, Tipo B (26,7%, especialmente em mulheres, (mosorrinia e o Tipo C (leptorrinia (2,8%. CONCLUSÕES: Há associação significativa entre o gênero do indivíduo e seu tipo nasal. A platirrinia, entre homens, e a mosorrinia, entre mulheres; somente 2,8% sendo leptorrinia. Os índices nasais foram mais altos em homens do que em mulheres.

  6. Fotografías de amas de leche en bahía. Evidencia visual de los aportes Africanos a la familia esclavista en Brasil

    Directory of Open Access Journals (Sweden)

    Christianne Silva Vasconcellos

    2011-10-01

    Full Text Available Este artículo presenta un análisis de la producción y el uso de fotografías de personas africanas y afrodescendientes, realizadas en Brasil entre 1840, cuando esta técnica fue introducida al país, y 1920, cuando las primeras fotografías aún estaban en circulación. Desde la evidencia visual, se analizan tres temas recurrentes en el Brasil del siglo XIX: la difusión de teorías del racismo científico europeo a través de la fotografía, la creación de los tipos urbanos en las ciudades esclavistas y las nodrizas (amas de leche como agentes culturales en el seno de la familia colonial en Bahía.

  7. A Abordagem dos Modos de Vida Como Ferramenta de Análise das Estratégias de Sobrevivência no Meio Rural Africano

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    Tomás Adriano Sitoe

    2011-01-01

    Full Text Available Diversification is a social and economic process that interprets creation of many and different sources of income in a given period of time. The constancy and eventually the increase of diversification of activities and income sources in rural spaces led to a revision of theories and approaches for better understanding this phenomenon. The Sustainable Livelihood Approach (SLA was adopted in the 1990s as a new paradigm to address the issue of diversification and poverty in developing countries, with emphasis on rural Africa. Currently, this approach has been used by various organizations and individuals as an analytical tool for studying the livelihood strategies; however, little attention has been made to the its limitations. Based on literature revision the article presents and discusses the SLA. A conclusion is that although it has some limitation in general it can provide a better understanding of realities evolving rural spaces, mainly in low developed societies. The main limitation is regarding the difficulty for capturing the dynamics and complexity that involves the process of assets transformation into livelihood strategies.

  8. Sulle Orme Del Gigante: Cristina Scarlat (A Cura Di, Mircea Eliade Once Again, Lumen, Iasi, 2011

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    Lara SANJAKDAR

    2012-09-01

    Full Text Available Negli ultimi anni il crescente interese per la persona e l’opera di Mircea Eliade ha originato una vera e propria esplosione di pubblicazioni dedicate allo studioso, e anche la comparsa postuma di molti scritti inediti. Alcune di questi lavori, peraltro di rilievo, sono apparsi in occasiione delle celebrazioni del ventennale della morte dell’ intelectuale romeno (2006, altre ancora in tempi recentissimi non soltano in Italia, ma anche in Romania, Germania, Stati Uniti d’America, Spagna e Russia.

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

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    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. Paraiso (Melia azedarach var. gigante) woodlots: an agroforestry alternative for the small farmer in Paraguay

    Energy Technology Data Exchange (ETDEWEB)

    Evans, P.T.; Rombold, J.S.

    1984-01-01

    A description is given of methods of growing mixtures of paraiso with annual crops, grazing and/or other trees such as Leucaena leucocephala in the degraded, acid, sandy soils of the humid sub-tropical Guayaybi area. Paraiso grows rapidly with deep root systems and contributes a large amount of organic material to the soil as litter. The wood is useful for furniture, veneers, plywood and interior carpentry and can be harvested at age 12-15 year (d.b.h. 40-50 cm).

  11. Estrutura nuclear e competição entre modos de decaimento de ressonancia gigantes

    OpenAIRE

    Carlos Augusto P. Ceneviva

    1997-01-01

    Resumo: A estrutura dos níveis de mais baixa energia para isótopos ímpares de Pb (193A205) é investigada no contexto da aproximação de BCS projetada (PBCS) com uma- e três- quase-partículas. Uma interação do tipo delta de superficie (SDI) foi utilizada como interação residual. Energias de excitação, fatores espectroscópicos e momentos de dipolo magnético e quadrupolo elétrico foram calculados e comparados com valores experimentais. Para isótopos ímpares de Te (115A131), os cálculos das energi...

  12. Avances en la formación de los planetas gigantes del sistema solar

    Science.gov (United States)

    Guilera, O. M.; Fortier, A.; Brunini, A.; Benvenuto, O. G.

    In the framework of the "Nice model", we compute the formation of the solar system giant planets by concurrent accretion of solids and gas, and study the dependence of this process on the surface profile of the protoplan- etary disk and the size distribution of the accreted planetesimals. We focus on the conditions that lead to the simultaneous formation of two massive cores, corresponding to Jupiter and Saturn, which should be able to reach the cross-over mass (where the mass of the envelope equals the mass of the core, and gaseous runway starts), while two other cores should be able to grow up to Uranus and Neptune's current masses. We find that the si- multaneous formation of the giant planets is favored by flat surface density profiles and by the accretion of relatively small planetesimals. FULL TEXT IN SPANISH

  13. 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.

  14. Discovery of the Largest Orbweaving Spider Species: The Evolution of Gigantism in Nephila

    OpenAIRE

    Matjaz Kuntner; Coddington, Jonathan A.

    2009-01-01

    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 Afr...

  15. Gigant Transethmoidal Meningoencephalocele Operated by Full Endonasal Endoscopic Approach: Case Report

    Directory of Open Access Journals (Sweden)

    Omar Lopez Arbolay

    2012-01-01

    Full Text Available Intranasal meningoencephaloceles have historically been managed by neurosurgeons, although their main clinical manifestations are rhinological. Recent advances in endoscopic skull base surgery has significantly improved the treatment of these lesions and consequently diminished appreciable surgical morbidity. We report an ethmoidal meningoencephalocele case operated on by endonasal endoscopic approach for removal of the lesion and reconstructing the associated skull base. From this experience, we conclude that removal of the lesion and watertight closure of the skull base irrespective of the size of the mass and anterior skull base defect are the operation’s most important aspects.

  16. 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.

  17. Abscesso cervical gigante provocado por sialolitíase de glândula submandibular

    OpenAIRE

    Fernanda Fruet; Carolina Daniela Ricci; Bianca Caroline Alvim Tomaz

    2016-01-01

    Introdução: As infecções cervicais profundas apresentam alta mortalidade, apesar da eficácia da antibioticoterapia atual. Uma das principais complicações é a obstrução das vias aéreas superiores. A principal causa dessas infecções é de origem odontogênica e, raramente, a infecção das glândulas salivares. Objetivo: Apresentar um caso de abscesso cervical profundo, cuja etiologia rara está associada à sialolitíase com origem em glândula submandibular. Metodologia: O caso foi acompanhado no serv...

  18. Abscesso cervical gigante provocado por sialolitíase de glândula submandibular

    Directory of Open Access Journals (Sweden)

    Fernanda Fruet

    2016-10-01

    Full Text Available Introdução: As infecções cervicais profundas apresentam alta mortalidade, apesar da eficácia da antibioticoterapia atual. Uma das principais complicações é a obstrução das vias aéreas superiores. A principal causa dessas infecções é de origem odontogênica e, raramente, a infecção das glândulas salivares. Objetivo: Apresentar um caso de abscesso cervical profundo, cuja etiologia rara está associada à sialolitíase com origem em glândula submandibular. Metodologia: O caso foi acompanhado no serviço de Cabeça e Pescoço do Conjunto Hospitalar de Sorocaba (CHS e sua descrição embasada na literatura. Relato de Caso: Paciente iniciou quadro de dor localizada em região submandibular posterior direita, acompanhada de disfagia e dispneia contínua. Procurou atendimento médico na cidade de origem, onde recebeu antibioticoterapia. Evoluiu com insuficiência respiratória, necessitando de transferência para o serviço de emergência do CHS aos cuidados da equipe de Cabeça e Pescoço. Ao exame físico, apresentava edema, abaulamento e hiperemia da lateral direita do pescoço. A Tomografia Computadorizada evidenciou abscesso em espaço retro-faríngeo com compressão da parede posterior da orofaringe e hipofaringe, além de glândula submandibular direita aumentada e imagem de cálculo. Foi realizada a traqueostomia e a resolução cirúrgica por meio da drenagem do abscesso através da incisão transversa em colar. Conclusão: O caso apresentado mostra um abscesso cervical profundo causado por etiologia incomum, a sialolitíase, cujo diagnóstico precoce, seguido do tratamento adequado, poderiam ter evitado a evolução grave do paciente. Neste caso, a drenagem cirúrgica precoce mostra sua importância na prevenção de insuficiência respiratória.

  19. Bony cranial ornamentation linked to rapid evolution of gigantic theropod dinosaurs

    Science.gov (United States)

    Gates, Terry A.; Organ, Chris; Zanno, Lindsay E.

    2016-09-01

    Exaggerated cranial structures such as crests and horns, hereafter referred to collectively as ornaments, are pervasive across animal species. These structures perform vital roles in visual communication and physical interactions within and between species. Yet the origin and influence of ornamentation on speciation and ecology across macroevolutionary time scales remains poorly understood for virtually all animals. Here, we explore correlative evolution of osseous cranial ornaments with large body size in theropod dinosaurs using a phylogenetic comparative framework. We find that body size evolved directionally toward phyletic giantism an order of magnitude faster in theropod species possessing ornaments compared with unadorned lineages. In addition, we find a body mass threshold below which bony cranial ornaments do not originate. Maniraptoriform dinosaurs generally lack osseous cranial ornaments despite repeatedly crossing this body size threshold. Our study provides novel, quantitative support for a shift in selective pressures on socio-sexual display mechanisms in theropods coincident with the evolution of pennaceous feathers.

  20. Raymond D. Adams, gigante de la neurología norteamericana

    OpenAIRE

    Leonardo Palacios

    2011-01-01

    Professor Raymond D. Adams (1911-2010) has been one of the most prominent figures in North American neurology in the XX century. He studied medicine at Duke University. He began training in psychiatry but decided to study nervous system pathology and neurology in Boston City Hospital during ten years. Then he became chairman of the neurology department in Massachusetts General Hospital for more than twenty five years. He was Neuropathology Emeritus Professor at Harvard University and has been...

  1. Raymond D. Adams, gigante de la neurología norteamericana

    OpenAIRE

    Palacios, Leonardo

    2011-01-01

    El profesor Raymond D. Adams (1911-2010) fue una de las figuras más prominentes de la neurología norteamericana en el siglo XX. Realizó sus estudios de medicina en la Universidad de Duke. Posteriormente, inició especialización en psiquiatría, pero optó por dedicarse al estudio de la patología del sistema nervioso y a la neurología en el Hospital de Boston durante 10 años. Luego fue contratado por el Hospital General de Massachusetts, donde dirigió del Departamento de Neurología por más de 25 ...

  2. Raymond D. Adams, gigante de la neurología norteamericana

    Directory of Open Access Journals (Sweden)

    Leonardo Palacios

    2011-12-01

    Full Text Available Professor Raymond D. Adams (1911-2010 has been one of the most prominent figures in North American neurology in the XX century. He studied medicine at Duke University. He began training in psychiatry but decided to study nervous system pathology and neurology in Boston City Hospital during ten years. Then he became chairman of the neurology department in Massachusetts General Hospital for more than twenty five years. He was Neuropathology Emeritus Professor at Harvard University and has been recognized by other universities and scientific associations in United States and in other countries. His contribution to North American Neurology consolidation has been crucial. He described various syndromes and contributed to the development of other fields in neuroscience. He wrote and published many scientific articles and since 1977 with his colleague Maurice Victor the books “Principles of Neurology” a classic in the field, being traduced to many languages. He has been the chairman of a Department where many important neurologists from different parts of the world where trained and brighten neurology worldwide.

  3. Alcohol chemistry in the Galactic Center molecular clouds. A gigantic Hot Core

    Science.gov (United States)

    Requena Torres, M. A.; Martín-Pintado, J.; Rodríguez-Franco, A.; Martín, S.; Rodríguez-FerńNdez, N. J.

    We have carried out a systematic study of CH3OH, C2H5OH, (CH3)2O, HCOOCH3, HCOOH, CH3COOH, H2CO and CS in different Galactic Center (GC) molecular clouds. Figure 1 shows the relative abundances of those molecules with respect to CH3OH in the GC as function of the CH3OH abundance. The CH3OH abundance between sources in the GC varies in nearly two orders of magnitude. The abundance ratio of these molecules relative to CH3OH is basically independent of the CH3OH abundances and only varies in a factor of ~ 4 - 8. The abundance ratio of CS relative to CH3OH seem to vary by a factor of 60. Our data are compared with observations of the same molecules in short-lived objects like the hot cores. The abundance and the abundance ratios of the complex molecules relative to CH3OH in massive hot cores are similar to that found in the GC clouds. Alcohol related chemistry is believed to be driven by gas phase reactions after evaporation of alcohols from grain mantles. Gas phase chemistry based in the ejection of alcohols from grains (see Charnley et al. 1995; Horn et al. (2004)) can not explain the observed abundances of HCOOCH3 in the GC and the rather constant relative abundances of the other complex molecules. Our data suggest that basically all the molecules related to alcohol chemistry could be produced on grain mantles and/or depleted from gas phase after their formation. This interpretation requires frequent shocks in the GC region to keep the high abundances of these molecules in gas phase and a rather uniform average composition of the icy grain mantles. The molecular clouds associated with the Sickle and the Thermal Radio Arches (TRA), which seem to be affected by UV radiation, see Rodriguez-Fernandez et al. (2001), show lower abundances of C2H5OH relative to CH3OH which could be explained by shock ejection and photo dissociation conditions.

  4. Gigantic Photoresponse in 14-Filled-Band Organic Salt (EDO-TTF)2PF6

    Science.gov (United States)

    Chollet, Matthieu; Guerin, Laurent; Uchida, Naoki; Fukaya, Souichi; Shimoda, Hiroaki; Ishikawa, Tadahiko; Matsuda, Kazunari; Hasegawa, Takumi; Ota, Akira; Yamochi, Hideki; Saito, Gunzi; Tazaki, Ryoko; Adachi, Shin-ichi; Koshihara, Shin-ya

    2005-01-01

    We report that the organic salt (EDO-TTF)2PF6 with 34-filled-band (14-filled in terms of holes), which forms an organic metal with strong electron and lattice correlation, shows a highly sensitive response to photoexcitation. An ultrafast, photoinduced phase transition from the insulator phase to the metal phase can be induced with very weak excitation intensity at near room temperature. This response makes the material attractive for applications in switching devices with room-temperature operation. The observed photoinduced spectroscopic change shows that this photoinduced phase transition process is caused by the cooperative melting of charge ordering assisted by coherent phonon generation.

  5. Gela submarine slide: gigantic basin-wide event in the Plio-Quaternary foredeep of Sicily

    Energy Technology Data Exchange (ETDEWEB)

    Argnani, A.; Trincardi, F.

    1988-08-01

    The Gela basin is a Pliocene-Quaternary foredeep basin located at the front of the Maghrebian fold-thrust belt of Sicily, filled with 2,500 m-thick shallowing-upward marine sediments. An important contribution to the basin fill comes from a huge, basin-wide submarine slide which extends for 3,500 km/sup 2/ and thickens as much as 450 m; the estimated sediment volume involved in the slide is close to 1,000 km/sup 3/. The authors investigation used more than 3,000 km of multichannel and single-channel seismic reflection profiles. The slide depositional geometries and facies relationships have been reconstructed from seismic interpretation to provide insight into transport and emplacement mechanisms. Apparently, the slide was not simply deposited via mass transfer from the slope into the basin. Indeed, the bulk of the slide is composed of basin sediments plastically deformed under the gravitational force driven by the correspondent slope sediments. Such a deformation occurred above an extremely effective decollement surface which controlled the slide distribution throughout the basin. More localized decollement planes are, however, present within the slide body and contributed to its complex deformation. The slide can thus be considered the result of a generalized gravitational collapse which affected the sediments lying above a peculiar decollement horizon. A general uplift characterized the late Quaternary evolution of the area, and volcanic activity was quite widespread and documented in the historical record. A punctuated episode of energy release (volcanic related ), superimposed to the uplift trend, may have triggered the slide in conjunction with potentially easy detachment of a decollement.

  6. Cryptococcus neoformans capsular enlargement and cellular gigantism during Galleria mellonella infection.

    Directory of Open Access Journals (Sweden)

    Rocío García-Rodas

    Full Text Available We have studied infection of Cryptococcus neoformans in the non-vertebrate host Galleria mellonella with particular interest in the morphological response of the yeast. Inoculation of C. neoformans in caterpillars induced a capsule-independent increase in haemocyte density 2 h after infection. C. neoformans manifested a significant increase in capsule size after inoculation into the caterpillar. The magnitude of capsule increase depended on the temperature, being more pronounced at 37°C than at 30°C, which correlated with an increased virulence of the fungus and reduced phagocytosis at 37°C. Capsule enlargement impaired phagocytosis by haemocytes. Incubation of the yeast in G. mellonella extracts also resulted in capsule enlargement, with the polar lipidic fraction having a prominent role in this effect. During infection, the capsule decreased in permeability. A low proportion of the cells (<5% recovered from caterpillars measured more than 30 µm and were considered giant cells. Giant cells recovered from mice were able to kill the caterpillars in a manner similar to regular cells obtained from in vivo or grown in vitro, establishing their capacity to cause disease. Our results indicate that the morphological transitions exhibited by C. neoformans in mammals also occur in a non-vertebrate host system. The similarities in morphological transitions observed in different animal hosts and in their triggers are consistent with the hypothesis that the cell body and capsular responses represent an adaptation of environmental survival strategies to pathogenesis.

  7. A New Gigantic Sauropod Dinosaur with the Deepest Known Body Cavity from the Cretaceous of Asia

    Institute of Scientific and Technical Information of China (English)

    L(U) Junchang; XU Li; ZHANG Xingliao; HU Weiyong; WU Yanhua; JIA Songhai; JI Qiang

    2007-01-01

    A new species of sauropod dinosaur Huanghetitan ruyangensis is erected based on the following characters: deepest body cavity with a dorsal rib reaching at least 2.93 m long, anterior caudal vertebrae with mushroom-shaped neural spines. Based on this new specimen of Huanghetitan found in the early Late Cretaceous Mangchuan Formation of Ruyang, Henan Province, the family Huanghetitanidae fam. nov. is proposed as a new rank to include only the genus Huanghetitan You et al.2006. At present, Huanghetitan includes two species: H. liujiaxiaensis You et al., 2006 and H.ruyangensis sp. nov. The systematic relationships of Huanghetitan among sauropod dinosaurs are briefly discussed.

  8. Gigantism of infrastructure and urban microsystems The role of the project

    Directory of Open Access Journals (Sweden)

    Antonella Falzetti

    2012-04-01

    Full Text Available If there is a solidarity between nature and landscape, not so reassuring is 'the relationship between landscape and infrastructure, or landscape and urbanized areas, too often based on functional reasons that do not provide ' the value of natural places and 'the needs of vulnerable urban areas as well.

  9. The island rule in the Brazilian frog Phyllodytes luteolus (Anura: Hylidae: incipient gigantism?

    Directory of Open Access Journals (Sweden)

    Marcio Mageski

    2015-10-01

    Full Text Available ABSTRACT The island rule suggests that, when mainland animals are isolated on islands, large animals tend to become smaller, while small animals tend to become larger. A small frog in eastern Brazil, Phyllodytes luteolus (Wied-Neuwied, 1824, is widely distributed in association with bromeliads. At the end of the last glaciation, parts of the mainland became islands due to rising sea levels, thereby isolating frog populations on these islands. If the island rule holds, we predicted that frogs on islands would tend to be larger than frogs on the mainland. We compared sizes (weight and length of 30 randomly selected male frogs from the mainland with 30 from an island in the state of Espírito Santo, Brazil. We also sampled population density on the island and mainland because concurrent with changing sizes, depending on the causal relationship, density may also change. As predicted, island frogs tended to be larger (both in snout-vent length and weight and were much more abundant. While not specifically addressed in this study, the absence of predators and interspecific competitors may explain both of these trends.

  10. ecCNO Solar Neutrinos: A Challenge for Gigantic Ultra-Pure Liquid Scintillator Detectors

    CERN Document Server

    Villante, F L

    2014-01-01

    Neutrinos produced in the Sun by electron capture reactions on $^{13}{\\rm N}$, $^{15}{\\rm O}$ and $^{17}{\\rm F}$, to which we refer as ecCNO neutrinos, are not usually considered in solar neutrino analysis since the expected fluxes are extremely low. The experimental determination of this sub-dominant component of the solar neutrino flux is very difficult but could be rewarding since it provides a determination of the metallic content of the solar core and, moreover, probes the solar neutrino survival probability in the transition region at $E_\

  11. 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.

  12. Discussion on gigantic architectonic structure%浅析巨型建筑结构

    Institute of Scientific and Technical Information of China (English)

    董爱梅

    2004-01-01

    从高层建筑抗侧力体系出发,分析了巨型结构体系的各种形式和受力特点,经研究可知,巨型建筑结构在传力、抗震、抗侧刚度和发挥材料特长等方面具有很强的优越性.

  13. SHI Chongtang:Be a Gigantic Lion%施崇棠巨狮策略

    Institute of Scientific and Technical Information of China (English)

    林文而

    2010-01-01

    @@ 爱好挑战在施崇棠在1993年底离开施振荣,担当华硕CEO的时候,颇有点"受命于危难之间"的味道.当此时,华硕1993年的营收同比增长1.2亿台币,这在当时的台湾IT界,"几乎可视为停滞不前".

  14. Quiste de ovario gigante. Presentación de un caso

    Directory of Open Access Journals (Sweden)

    Yarisdey Corrales Hernández

    2012-09-01

    Full Text Available 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.

  15. 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

  16. Nefrectomía parcial laparoscópica en angiomiolipoma gigante

    OpenAIRE

    2008-01-01

    Introducción: El angiomiolipoma es un tumor renal benigno constituido fundamentalmente por vasos sanguíneos, músculo liso y tejido adiposo. El tratamiento depende del tamaño, sintomatología y condición general del paciente. El manejo quirúrgico se debe enfocar en la preservación de la mayor cantidad de parénquima renal posible, siendo la nefrectomía parcial laparoscópica una alternativa a considerar. Reporte del caso: Paciente de 31 años de edad, sexo femenino, consulta en agosto del 2002 por...

  17. 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-yea......-year-old girl with a rapidly growing tumour in the breast. The tumour turned out to be a giant juvenile fibroadenoma, which is rare and benign. Differential diagnosis, investigation and management are reviewed....

  18. A gigantic shark from the lower cretaceous duck creek formation of Texas.

    Science.gov (United States)

    Frederickson, Joseph A; Schaefer, Scott N; Doucette-Frederickson, Janessa A

    2015-01-01

    Three large lamniform shark vertebrae are described from the Lower Cretaceous of Texas. We interpret these fossils as belonging to a single individual with a calculated total body length of 6.3 m. This large individual compares favorably to another shark specimen from the roughly contemporaneous Kiowa Shale of Kansas. Neither specimen was recovered with associated teeth, making confident identification of the species impossible. However, both formations share a similar shark fauna, with Leptostyrax macrorhiza being the largest of the common lamniform sharks. Regardless of its actual identification, this new specimen provides further evidence that large-bodied lamniform sharks had evolved prior to the Late Cretaceous.

  19. A gigantic shark from the lower cretaceous duck creek formation of Texas.

    Directory of Open Access Journals (Sweden)

    Joseph A Frederickson

    Full Text Available Three large lamniform shark vertebrae are described from the Lower Cretaceous of Texas. We interpret these fossils as belonging to a single individual with a calculated total body length of 6.3 m. This large individual compares favorably to another shark specimen from the roughly contemporaneous Kiowa Shale of Kansas. Neither specimen was recovered with associated teeth, making confident identification of the species impossible. However, both formations share a similar shark fauna, with Leptostyrax macrorhiza being the largest of the common lamniform sharks. Regardless of its actual identification, this new specimen provides further evidence that large-bodied lamniform sharks had evolved prior to the Late Cretaceous.

  20. The Ophiuchus Superbubble: A Gigantic Eruption from the Inner Disk of the Milky Way

    CERN Document Server

    Pidopryhora, Y; Shields, J C; Pidopryhora, Yurii; Lockman, Felix J.; Shields, Joseph C.

    2006-01-01

    While studying extraplanar neutral hydrogen in the disk-halo transition of the inner Galaxy we have discovered what appears to be a huge superbubble centered around l ~ 30 deg, whose top extends to latitudes > 25 deg at a distance of about 7 kpc. It is detected in both HI and Halpha. Using the Green Bank Telescope of the NRAO, we have measured more than 220,000 HI spectra at 9' angular resolution in and around this structure. The total HI mass in the system is ~ 10^6 Msol and it has an equal mass in H+. The Plume of HI capping its top is 1.2 x 0.6 kpc in l and b and contains 3 x 10^4 Msol of HI. Despite its location, (the main section is 3.4 kpc above the Galactic plane) the kinematics of the Plume appears to be dominated by Galactic rotation, but with a lag of 27 km/s from corotation. At the base of this structure there are ``whiskers'' of HI several hundreds of pc wide, reaching more than 1 kpc into the halo; they have a vertical density structure suggesting that they are the bubble walls and have been crea...

  1. Low levels of LTR retrotransposon deletion by ectopic recombination in the gigantic genomes of salamanders.

    Science.gov (United States)

    Frahry, Matthew Blake; Sun, Cheng; Chong, Rebecca A; Mueller, Rachel Lockridge

    2015-02-01

    Across the tree of life, species vary dramatically in nuclear genome size. Mutations that add or remove sequences from genomes-insertions or deletions, or indels-are the ultimate source of this variation. Differences in the tempo and mode of insertion and deletion across taxa have been proposed to contribute to evolutionary diversity in genome size. Among vertebrates, most of the largest genomes are found within the salamanders, an amphibian clade with genome sizes ranging from ~14 to ~120 Gb. Salamander genomes have been shown to experience slower rates of DNA loss through small (i.e., salamander genomes resulting from larger deletions. Here, we focus on one type of large deletion-ectopic-recombination-mediated removal of LTR retrotransposon sequences. In ectopic recombination, double-strand breaks are repaired using a "wrong" (i.e., ectopic, or non-allelic) template sequence-typically another locus of similar sequence. When breaks occur within the LTR portions of LTR retrotransposons, ectopic-recombination-mediated repair can produce deletions that remove the internal transposon sequence and the equivalent of one of the two LTR sequences. These deletions leave a signature in the genome-a solo LTR sequence. We compared levels of solo LTRs in the genomes of four salamander species with levels present in five vertebrates with smaller genomes. Our results demonstrate that salamanders have low levels of solo LTRs, suggesting that ectopic-recombination-mediated deletion of LTR retrotransposons occurs more slowly than in other vertebrates with smaller genomes.

  2. Dopamine-deprived striatal GABAergic interneurons burst and generate repetitive gigantic IPSCs in medium spiny neurons.

    Science.gov (United States)

    Dehorter, Nathalie; Guigoni, Celine; Lopez, Catherine; Hirsch, June; Eusebio, Alexandre; Ben-Ari, Yehezkel; Hammond, Constance

    2009-06-17

    Striatal GABAergic microcircuits modulate cortical responses and movement execution in part by controlling the activity of medium spiny neurons (MSNs). How this is altered by chronic dopamine depletion, such as in Parkinson's disease, is not presently understood. We now report that, in dopamine-depleted slices of the striatum, MSNs generate giant spontaneous postsynaptic GABAergic currents (single or in bursts at 60 Hz) interspersed with silent episodes, rather than the continuous, low-frequency GABAergic drive (5 Hz) observed in control MSNs. This shift was observed in one-half of the MSN population, including both "D(1)-negative" and "D(1)-positive" MSNs. Single GABA and NMDA channel recordings revealed that the resting membrane potential and reversal potential of GABA were similar in control and dopamine-depleted MSNs, and depolarizing, but not excitatory, actions of GABA were observed. Glutamatergic and cholinergic antagonists did not block the GABAergic oscillations, suggesting that they were generated by GABAergic neurons. In support of this, cell-attached recordings revealed that a subpopulation of intrastriatal GABAergic interneurons generated bursts of spikes in dopamine-deprived conditions. This subpopulation included low-threshold spike interneurons but not fast-spiking interneurons, cholinergic interneurons, or MSNs. Therefore, a population of local GABAergic interneurons shifts from tonic to oscillatory mode when dopamine deprived and gives rise to spontaneous repetitive giant GABAergic currents in one-half the MSNs. We suggest that this may in turn alter integration of cortical signals by MSNs.

  3. Estructura del diagrama HR para gigantes rojas de poblacion I de masas intermedias.

    Science.gov (United States)

    Clariá, J. J.; Lapasset, E.; Minniti, D.

    1990-11-01

    The structure of the HR diagram (clump and giant branch) for intermediate mass population I red giants is examined on the basis of multicolour photometry (UBV, DDO, and DT1T2) of open clusters belonging to the NGC 3532 and NGC 6475 groups.

  4. Exportaciones no tradicionales en Nueva Granada: el caso del gigante Cano (1792

    Directory of Open Access Journals (Sweden)

    Ramón Gutiérrez

    1997-09-01

    Full Text Available La historiografía ha recogido con entusiasmo la preocupación "científica" de los ilustrados gobernantes y funcionarios españoles del último tercio del siglo XVIII. La notoria curiosidad por el conocimiento no estuvo, sin embargo, exenta de frivolidad, donde la obsecuente intención de satisfacer los deseos reales abrieron caminos a la arbitrariedad e inclusive al aventurerismo. El caso que vamos a abordar hoy es más elocuente en lo que significaba para los funcionarios de la corona la vida de sus súbditos, que podía llegar en casos especiales a ser un objeto de simple curiosidad y trapicheo, eso sí, envuelto con una supuesta preocupación "científica".

  5. 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.

  6. Estudos sobre a Esquistosomose em Pernambuco, Brasil

    Directory of Open Access Journals (Sweden)

    Aggeu Magalhães

    1940-01-01

    Full Text Available Os autores referem os resultados dos estudos sobre esquistosomose realisados, em Pernambuco, de Novembro de 1938 a Dezembro de 1939. Não se extendem em discussão, nem comentarios, tampouco, relacionam suas verificações com o que já foi relatado sobre o assunto em trabalhos nacionais e estrangeiros, pelo fato de que, não se trata de um resultado definitivo e sim de atividades que irão proseguir. Os estudos sistematicos em torno da endemia esquistosomica foram executados em duas localidades diversas pela população e pela situação geografica e ecologica. Pontezinha é uma povoação de 1200 habitantes localizada proximo a um conjunto de charcos e lagõas de agua dôce onde pululam caramujos do tipo olivaceus de Spix, e apresenta uma taxa de infestação de 21,4% para individuos do sexo masculino, e de 14,7% para os do sexo feminino. A distribuição por grupos de idade mostra que a incidencia cresce até o grupo de 16 a 20 anos de idade, quando atinge a percentagem de 37,8%, para decrescer em seguida. Em Vitoria a incidencia foi maior nos indivíduos do sexo feminino, atingindo a taxa de 41,4%, dando o sexo masculino a taxa de 36,9%. Por idade a percentagem maxima é atingida pelo grupo de 11 a 15 anos. Vitoria é uma cidade de 1500 habitantes, construida á margem do rio Tapacurá, onde se encontram numerosos caramujos do tipo centimetralis Lutz. A divergencia de incidencia corre por conta dos habitos da população e pela utilização que ela faz do rio, sendo maior em Vitoria porque a proximidade do rio facilita o uso de suas aguas para banho e serviços domesticos, condicionando este ultimo fato, a maior infestação das mulheres. O estudo da frequencia da infestação dos caramujos por cercarias de diversos trematodios, permite suspeitar uma relação inversa entre a taxa de infestação e o diametro maximo atingido pelos caramujos, parecendo este fato confirmar os trabalhos de Vianna Martins sobre a identidade dos hospedeiros

  7. Estrutura de um cerrado strico sensu na Gleba Cerrado Pé-de-Gigante, Santa Rita do Passa Quatro, SP

    Directory of Open Access Journals (Sweden)

    Fidelis Alessandra Tomaselli

    2003-01-01

    Full Text Available O Cerrado ocupa aproximadamente 23% do território brasileiro e 70% do bioma correspondem a cerrado stricto sensu (s.s., sendo relevantes os estudos que buscam o entendimento da estrutura da vegetação nessas áreas. Com esse objetivo, foram estudadas cinco parcelas (10×25m em um hectare de cerrado s.s., amostrando-se todos os indivíduos com perímetro no nível do solo igual ou acima de 3cm (exceto lianas e indivíduos mortos. Alguns parâmetros fitossociológicos foram analisados, assim como a distribuição de classes de diâmetro dos indivíduos amostrados e a estrutura vertical. Foram amostradas 1.747 indivíduos, distribuídos em 75 espécies, pertencentes a 31 famílias. A densidade total absoluta encontrada foi de 13.976 ind.ha-1 e a área basal total, de 4,902m². Leguminosae foi a família com o maior número de espécies (16. As espécies que apresentaram os maiores valores de Índice do Valor de Importância (IVI foram Anadenanthera falcata (Benth. Altschul, Myrcia guianensis (Aubl. DC., Xylopia aromatica (Lm. Mart., Ouratea spectabilis (Mart. Engl. e Pouteria ramiflora (Mart. Radlk. O Índice de Shannon encontrado foi de 3,623. A distribuição de classes de diâmetro apresentou curva na forma de "J" invertido, estando a maioria dos indivíduos na primeira classe. A área estudada não apresentou estratos bem definidos, estando a maioria dos indivíduos entre 1 e 3m de altura.

  8. On the shoulders of giants: Harvey Cushing's experience with acromegaly and gigantism at the Johns Hopkins Hospital, 1896-1912.

    NARCIS (Netherlands)

    Pendleton, C.; Adams, H.; Salvatori, R.; Wand, G.; Quinones-Hinojosa, A.

    2011-01-01

    A review of Dr. Cushing's surgical cases at Johns Hopkins Hospital revealed new information about his early operative experience with acromegaly. Although in 1912 Cushing published selective case studies regarding this work, a review of all his operations for acromegaly during his early years has ne

  9. Tratamento médico em tumores ósseos de células gigantes : uma nova perspectiva

    OpenAIRE

    2014-01-01

    Trabalho final de mestrado incluido em Medicina (Ortopedia), apresentado á Faculdade de Medicina da Universidade de Coimbra Introduction Giant cell tumor (GCT) is a rare, aggressive, potentially malignant primary lesion of bone that occurs in young adults, and for which surgical treatment is not always an option, sometimes resulting in severe morbidity and with the risk of recurrence. Recent studies presented denosumab as the first effective medical treatment for this type of tumo...

  10. Cisto tímico gigante com localização atípica: relato de caso

    Directory of Open Access Journals (Sweden)

    Mário Augusto Cray da Costa

    2013-09-01

    Full Text Available Paciente do sexo feminino, 47 anos, admitida com queixa de dispneia aos pequenos esforços como único sintoma. Exames clínico, eletrocardiográfico e de laboratório normais. Radiografia de tórax demonstrou massa em base de hemitórax direito, que a tomografia computadorizada de tórax revelou tratar-se de massa cística bem delimitada, medindo cerca de 11,3 x 10,6 x 10,9 cm, sugerindo o diagnóstico de cisto pericárdico. A paciente foi submetida a toracotomia direita para ressecção do cisto. A paciente evoluiu sem intercorrências. O resultado do exame anatomopatológico, ao contrário do esperado, diagnosticou cisto tímico.

  11. ANÁLISE QUÍMICA DO BAMBU-GIGANTE (DENDROCALAMUS GIGANTEUS WALL. EX MUNRO EM DIFERENTES IDADES

    Directory of Open Access Journals (Sweden)

    Nelson Potenciano Marinho

    2012-01-01

    Full Text Available Bamboo is a monocotyledon of tropical origin which grows fast and is considered an important environment regenerator because of its root system. Dendrocalamus giganteus is popular learned by giant bamboo, being a big bush species, its culms can be from 24 to 40 meters high, with diameters from 10 and 20 centimeters. This work had the objective of a chemical analysis from giant bamboo to aim at giving information from its chemical composition from 2 to 6 years of age. Bamboo culms were collected in the Agriculture Experimental area of the Mechanical Engineering Department of UNESP -Bauru, where it is carried out the systematic handling from different bamboo species to this plant research and divulgation. Samples from base were collected from 2 and 6 years in the same bush, in total of 5 samples, with 2 high meters each, cropped in March, half moon. Chemical analysis was done with internodes using TAPPI Methods. The average percentage extractives from hot water, cool water, total extractives and ash content were not related to the age. The major percentage of hot water extractives, with values of 12.04%, cold water extractives, with 10.25%, and total extractives, with 12.91%, was observed by the age of two years. The major ash content was obtained on three years, with value of 1.09%. The mean value of NaOH extractives decreased from 25.72%, in two years, to 20.17% at six years old. The same behavior was observed for ethanol toluene extractives, decreasing from 10.91% to 4.61%. The mean lignin content was not influenced by age, varying from 22.66 to 24.11%.

  12. Gigantic diphoton rate of heavy Higgs bosons in the aligned two Higgs doublet models with small $\\tan\\beta$

    CERN Document Server

    Song, Jeonghyeon

    2014-01-01

    We study the implications of the LHC heavy neutral Higgs search data on the aligned two Higgs doublet model with softly broken $Z_2$ symmetry. When $\\tan\\beta$ is small, the gluon fusion production of the heavy CP-even scalar $H^0$ or the CP-odd scalar $A^0$ becomes large enough to constrain the model by the current $\\gamma\\gamma$, $\\tau^+\\tau^-$, and $t\\bar{t}$ data. By reinvestigating this small $\\tan\\beta$ region, we find that the indirect constraints like $\\Delta\\rho$, $b\\to s \\gamma$, $\\Delta M_{B_d}$, $R_b$, $\\epsilon_K$, and the perturbativity of running top Yukawa coupling are rather weak to be $\\tan\\beta > 0.5$. The current heavy Higgs search results are shown to put more significant bounds. If $m_H \\simeq m_A$, the $t\\bar{t}$ mode excludes $\\tan\\beta< 1.5$ for $m_{H,A}=500-600\\,$GeV in all four types, and the $\\gamma\\gamma$ and $\\tau^+\\tau^-$ modes exclude $\\tan\\beta < 1-3$ ($\\tan\\beta < 3-10$) for $m_{H,A}=120-340\\,$GeV in Type I, II, and Y (Type X).

  13. 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.

  14. Giant adrenal cyst - a case report and classification; Cisto gigante da adrenal - relato de caso e classificacao

    Energy Technology Data Exchange (ETDEWEB)

    Pitaki, Sergio Augusto Munhoz; Louveira, Maria Helena [Clinica Radiologica Pitaki, Curitiba, PR (Brazil). Alphasonic; Rorato, Luciana; Antonik, Gustavo; Andrade, Andre Luis Lugnani de; Teixeira, Ana Maria Gonzaga [Faculdade Evangelica de Medicina do Parana (FEMPAR), Curitiba, PR (Brazil)

    1999-12-01

    Cystic lesions of the adrenal gland are relatively rare, but they must be considering in the differential diagnosis of abdominal masses. The authors report a case of a giant adrenal cyst assessed by ultrasonography, computed tomography and magnetic resonance imaging, and outline their features and classification. (author)

  15. Ultrafast gigantic photo-response in (EDO-TTF)2PF6 initiated by 10-fs laser pulses

    Science.gov (United States)

    Itatani, Jiro; Rini, Matteo; Cavalleri, Andrea; Onda, Ken; Ishikawa, Tadahiko; Koshihara, Shin-ya; Shao, Xiangfeng; Yamochi, Hideki; Saito, Gunzi; Shoenlein, Robert W.

    We photo-excited a charge-ordered organic salt (EDO-TTF)2PF6 with sub-10-fs optical pulses. The photo-induced metallic phase appeared within 80-fs after pumping, characterized by large changes in reflectivity (ΔR/R˜0.8) followed by strong coherent phonon modulation

  16. Ictericia secundaria a cistoadenoma seroso pancreático gigante Jaundice secondary to giant pancreatic serous cystoadenoma

    Directory of Open Access Journals (Sweden)

    S. Goñi

    2010-08-01

    Full Text Available El cistoadenoma seroso es el segundo tumor quístico más frecuente del páncreas y representa el 1-2% de todas las neoplasias exocrinas pancreáticas. Recientemente, gracias a las mejoras en las técnicas de imagen, la identificación de las lesiones quísticas pancreáticas es cada vez más frecuente. El diagnóstico diferencial ha de hacerse con el cistoadenoma mucinoso, debido al potencial maligno de esta última entidad. En esta nota clínica describimos el caso de una paciente con ictericia indolora y colestasis, con diagnóstico final de cistoadenoma seroso pancreático.Serous cystadenoma is the second most frequent pancreatic cystic neoplasm and accounts for 1-2% of exocrine neoplasms of the pancreas. Recently, they have been identified more frequently, due to the improvement in imaging techniques. Differential diagnosis should be performed with mucinous cystoadenoma, due to the latter's potential for malignant transformation. We present the case of a female patient who underwent examination for painless jaundice and cholestasis, with a final diagnosis of pancreatic serous cystoadenoma.

  17. Volcanic gas composition changes during the gradual decrease of the gigantic degassing activity of Miyakejima volcano, Japan, 2000-2015

    Science.gov (United States)

    Shinohara, Hiroshi; Geshi, Nobuo; Matsushima, Nobuo; Saito, Genji; Kazahaya, Ryunosuke

    2017-02-01

    The composition of volcanic gases discharged from Miyakejima volcano has been monitored during the intensive degassing activity that began after the eruption in 2000. During the 15 years from 2000 to 2015, Miyakejima volcano discharged 25.5 Mt of SO2, which required degassing of 3 km3 of basaltic magma. The SO2 emission rate peaked at 50 kt/day at the end of 2000 and quickly decreased to 5 kt/day by 2003. During the early degassing period, the volcanic gas composition was constant with the CO2/SO2 = 0.8 (mol ratio), H2O/SO2 = 35, HCl/SO2 = 0.08, and SO2/H2S = 15. The SO2 emission rate decreased gradually to 0.5 kt/day by 2012, and the gas composition also changed gradually to CO2/SO2 = 1.5, H2O/SO2 = 150, HCl/SO2 = 0.15, and SO2/H2S = 6. The compositional changes are not likely caused by changes in degassing pressure or volatile heterogeneity of a magma chamber but are likely attributed to an increase of hydrothermal scrubbing caused by large decrease of the volcanic gas emission rate, suggesting a supply of gases with constant composition during the 15 years. The intensive degassing was modeled based on degassing of a convecting magma conduit. The gradual SO2 emission rate that decrease without changes in volcanic gas composition is attributed to a reduction of diameter of the convecting magma conduit.

  18. Sistema Solar: de la observación de La Tierra a los planetas gigantes y sus lunas

    Science.gov (United States)

    Rodrigo, R.

    La fotoquímica tiene un papel principal en la composición de las atmósferas planetarias. Se examinan diferentes procesos fotoquímicos tanto para atmósferas oxidadas como reductoras, poniendo un especial énfasis en los ciclos químicos más importantes. En este sentido, se presentan diferentes ciclos químicos capaces de producir hidrocarbonos y nitrilos en atmósferas reductoras, así como aquellos capaces de mantener las proporciones de mezcla de las moléculas que contienen oxígeno, tales como CO2, O2 y H2O. También se analizan otros procesos importantes tales como la condensación y procesos de sputtering y de sublimación que han de tenerse en cuenta cuando se realizan modelos sobre la composición atmosférica.

  19. 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.

  20. Expression of a truncated Hmga1b gene induces gigantism, lipomatosis and B-cell lymphomas in mice.

    Science.gov (United States)

    Fedele, Monica; Visone, Rosa; De Martino, Ivana; Palmieri, Dario; Valentino, Teresa; Esposito, Francesco; Klein-Szanto, Andres; Arra, Claudio; Ciarmiello, Andrea; Croce, Carlo M; Fusco, Alfredo

    2011-02-01

    HMGA1 gene rearrangements have been frequently described in human lipomas. In vitro studies suggest that HMGA1 proteins have a negative role in the control of adipocyte cell growth, and that HMGA1 gene truncation acts in a dominant-negative fashion. Therefore, to define better the role of the HMGA1 alterations in the generation of human lipomas, we generated mice carrying an Hmga1b truncated (Hmga1b/T) gene. These mice develop a giant phenotype together with a drastic expansion of the retroperitoneal and subcutaneous white adipose tissue. We show that the activation of the E2F pathway likely accounts, at least in part, for this phenotype. Interestingly, the Hmga1b/T mice also develop B-cell lymphomas similar to that occurring in Hmga1-knockout mice, supporting a dominant-negative role of the Hmga1b/T mutant also in vivo.

  1. The mystery of the gigantic ships——What’s the size of Zheng He’s Bao Chuan

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    <正>Six hundred years ago,Zheng He,with order from Em- peror Yongle of the Ming Dynasty(1403-1425),started his seven voyages down to the Western Ocean(around the area of the South- east Asian archipelago,the Indo-China Peninsular,the Indian Ocean, the Arabian Peninsular and the eastern coast of Africa.) AS the leader of the fleet.Zheng He is undoubtedly the most outstanding navigator in the thousands of gears of Chinese history.His mammoth fleet with numerous,ships has made it legendary.

  2. Gigantic diphoton rate of heavy Higgs bosons in the aligned two Higgs doublet models with small tan β

    Science.gov (United States)

    Song, Jeonghyeon; Yoon, Yeo Woong

    2015-06-01

    We study the implications of the LHC heavy neutral Higgs boson search data on the aligned two Higgs doublet model with a softly broken Z2 symmetry. When tan β is small, the gluon fusion production of the heavy C P -even scalar H0 or the C P -odd scalar A0 becomes large enough to constrain the model by the current γ γ , τ+τ- , and t t ¯ data. By reinvestigating the indirect constraints from Δ ρ , b →s γ , Δ MBd , Rb, ɛK , and the perturbativity of the running top quark Yukawa coupling, we find that the small tan β region is still allowed: for instance, tan β ≳0.6 (0.5 ) for Type I and X (II and Y) for mH±=800 GeV . We find that the current LHC results of the heavy Higgs searches at √{s }=8 TeV are shown to put on more significant bounds. If mH≃mA , the t t ¯ mode excludes tan β ≲1.5 for mH ,A=500 - 600 GeV in all four types, and the γ γ and τ+τ- modes exclude tan β ≲1 - 3 (tan β ≲3 - 10 ) for mH ,A=150 - 340 GeV in Types I, II, and Y (Type X).

  3. A gigantic X-ray flare from the star Trumpler 14 Y442 in the Carina star forming complex

    Science.gov (United States)

    Hamaguchi, Kenji; Drake, Stephen A.; Corcoran, Michael F.; Richardson, Noel; Teodoro, Mairan

    2015-09-01

    XMM-Newton, NuSTAR and Swift observations of the Carina star forming complex on 2015 July 16 (ObsID - XMM:0762910401, NuSTAR:30101005002, Swift:00081578001) detected an X-ray flare at the coordinates (R.A., Dec)[J2000] = (10 44 02.80, -59 39 46.7).

  4. 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...

  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. Gigantic retroperitoneal hematoma as a complication of anticoagulation therapy with heparin in therapeutic doses: a case report

    Directory of Open Access Journals (Sweden)

    Daliakopoulos Stavros I

    2008-05-01

    Full Text Available Abstract Introduction Spontaneous retroperitoneal hemorrhage is a distinct clinical entity that can present as a rare life-threatening event characterized by sudden onset of bleeding into the retroperitoneal space, occurring in association with bleeding disorders, intratumoral bleeding, or ruptures of any retroperitoneal organ or aneurysm. The spontaneous form is the most infrequent retroperitoneal hemorrhage, causing significant morbidity and representing a diagnostic challenge. Case presentation We report the case of a patient with coronary artery disease who presented with transient ischemic attack, in whom anticoagulant therapy with heparin precipitated a massive spontaneous atraumatic retroperitoneal hemorrhage (with international normalized ratio 2.4, which was treated conservatively. Conclusion Delay in diagnosis is potentially fatal and high clinical suspicion remains crucial. Finally, it is a matter of controversy whether retroperitoneal hematomas should be surgically evacuated or conservatively treated and the final decision should be made after taking into consideration patient's general condition and the possibility of permanent femoral or sciatic neuropathy due to compression syndrome.

  7. Hemangioma cavernoso gigante de seno maxilar: Reporte de un caso y revisión de la literatura

    OpenAIRE

    Naser G,Alfredo; Samith M,Arturo; Ríos D,Carlos

    2009-01-01

    Los hemangiomas son neoplasias vasculares benignas que se presentan de preferencia en la región cervicofacial, siendo raros en las fosas nasales y excepcionales en los senos paranasales, con pocos casos reportados. Se presenta un paciente de sexo masculino y 33 años de edad, que consultó por obstrucción nasal, aumento de volumen maxilar y exoftalmo izquierdo de 2 años de evolución. La tomografía computada con contraste mostraba una masa hipodensa con realce anular del contraste en maxilar izq...

  8. A gigantic sarcopterygian (tetrapodomorph lobe-finned fish from the upper Devonian of Gondwana (Eden, New South Wales, Australia.

    Directory of Open Access Journals (Sweden)

    Ben Young

    Full Text Available Edenopteron keithcrooki gen. et sp. nov. is described from the Famennian Worange Point Formation; the holotype is amongst the largest tristichopterids and sarcopterygians documented by semi-articulated remains from the Devonian Period. The new taxon has dentary fangs and premaxillary tusks, features assumed to be derived for large Northern Hemisphere tristichopterids (Eusthenodon, Hyneria, Langlieria. It resembles Eusthenodon in ornament, but is distinguished by longer proportions of the parietal compared to the post-parietal shield, and numerous differences in shape and proportions of other bones. Several characters (accessory vomers in the palate, submandibulars overlapping ventral jaw margin, scales ornamented with widely-spaced deep grooves are recorded only in tristichopterids from East Gondwana (Australia-Antarctica. On this evidence Edenopteron gen. nov. is placed in an endemic Gondwanan subfamily Mandageriinae within the Tristichopteridae; it differs from the nominal genotype Mandageria in its larger size, less pointed skull, shape of the orbits and other skull characters. The hypothesis that tristichopterids evolved in Laurussia and later dispersed into Gondwana, and a derived subgroup of large Late Devonian genera dispersed from Gondwana, is inconsistent with the evidence of the new taxon. Using oldest fossil and most primitive clade criteria the most recent phylogeny resolves South China and Gondwana as areas of origin for all tetrapodomorphs. The immediate outgroup to tristichopterids remains unresolved - either Spodichthys from Greenland as recently proposed, or Marsdenichthys from Gondwana, earlier suggested to be the sister group to all tristichopterids. Both taxa combine two characters that do not co-occur in other tetrapodomorphs (extratemporal bone in the skull; non-cosmoid round scales with an internal boss. Recently both 'primitive' and 'derived' tristichopterids have been discovered in the late Middle Devonian of both hemispheres, implying extensive ghost lineages within the group. Resolving their phylogeny and biogeography will depend on a comprehensive new phylogenetic analysis.

  9. PALMA (OPUNTIA FICUS INDICA MILL CV. GIGANTE EM SUPLEMENTOS PARA FÊMEAS LEITEIRAS EM CRESCIMENTO A PASTO

    Directory of Open Access Journals (Sweden)

    GLEIDIANA AMÉLIA PONTES DE ALMEIDA

    2015-01-01

    Full Text Available This study aimed at evaluating the effect of replacing corn by palm in the supplements for dairy females in grazing at levels of 0, 33, 66 and 100%. Intake of pasture and apparent nutrient digestibility, animal performance, intake of nitrogenous compounds, nitrogen balance, synthesis and microbial efficiency and bioe-conomy system were evaluated. The study was conducted at Farm Roçadinho, municipality of Capoeiras Wasteland region of the State of Pernambuco in the period from 30/09/2012 to 19/01/2013, in a completely randomized design with four treatments and six replications, using 24 dairy females growing initial weight of 180 pounds. Consisted of 112 days, and 28 for adaptation. The intake of DM, DM/pasture, OM, CP, NDFap. NDFi intake and increased ADF because of the NFC, EE, and TDN decreased (P <0.05. PUN levels in plasma did not change. The apparent digestibility of DM, OM, NDF, ADF, NFC, EE and TDN decreased linearly, and CP increased (P <0.05. Weight gains decreased since the FC increased (P <0.05. No effect was observed in nitrogen intake and nitrogen excreted in the urine. A reduction in nitrogen excreted in the faeces nitrogen bal-ance and percentage of ingested nitrogen, urea-N excreted in the urine increased (P <0.05. The replacement of corn by palm reduces the performance of dairy females in pasture growth. Thus the total or partial replacement is conditioned to the projection of age at first calving on the production system and economy of use.

  10. 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.

  11. From Ally McBeal to Sabado Gigante: Contributions of Television Viewing to the Gender Role Attitudes of Latino Adolescents

    Science.gov (United States)

    Rivadeneyra, Rocio; Ward, L. Monique

    2005-01-01

    Although previous findings indicate that frequent television viewing is associated with holding more stereotypical attitudes about gender, no studies have examined this connection among Latino youth, who are frequent viewers of both English- and Spanish-language programming. The present study attempted to rectify this situation by examining…

  12. Instrumentos musicales en los ritos de Guinea Ecuatorial. Cultura musical atlántica tras la abolición de la esclavitud: una aproximación histórica en el caso africano

    OpenAIRE

    Aranzadi, Isabela de

    2011-01-01

    Los instrumentos musicales son parte intrínseca y viva de la cultura material que acompaña a los pueblos en su devenir histórico. Entre los fang, ndowe, bubi y bisío, la comunidad otorga un status mediante los ritos, al concebir el sonido como puerta de paso al mundo espiritual, jugando la música un papel determinante por su función de puente entre dos mundos y por su poder cohesionador. Tras la abolición de la esclavitud apenas hay documentos que reflejen la aportación cultural de los que vi...

  13. Análise das deslocações do Elefante Africano (Loxodonta africana) em função de factores ambientais e actividades humanas na Reserva Florestal de Moribane, Moçambique

    OpenAIRE

    Manhice, António Carlos

    2015-01-01

    Dissertação de Mestrado, Gestão e Conservação da Natureza, 10 de Dezembro de 2015, Universidade dos Açores. Este estudo foi realizado na Reserva Florestal de Moribane, na Província de Manica em Moçambique. Tinha por objectivo avaliar a frequência das manadas a água, a tipos de habitats e em campos agrícolas, por estação do ano e durante o dia e noite, bem como analisar as deslocações por cada manada, relacionando as deslocações com os factores altitude, declives e orientação de encostas. P...

  14. Uma reflexão sobre os agentes históricos na sistematização do estereótipo africano sobre a construção do imaginário do negro no Brasil

    Directory of Open Access Journals (Sweden)

    Claudia Lima

    2009-01-01

    Full Text Available This article presents a reflection based on references in order to show a major problem which is the African stereotype on the construction of the imagery of black people in Brazil, which interferes directly as a limiter in the receptivity and in the adequate recognition of the founding myths of the matrix African religions. The cultural references of the Africans were built up under occidental values and codes represented by the white-Christian man. In this sense, these ethnocentric parameters, at that period, were used specifi cally for evaluation and later on they migrated to Brazil. In this article, the focus is towards the possible origins of the construction of the African stereotype as a starting point in the trajectory of the representation of the identity which established the image of the black African in the Portuguese imagery in the 14th century. In this context, some special features shown by the Portuguese Catholic culture migrate as a continuum phenomenon which is fostered in the meeting or (remeeting in Brazilian territory, of the African culture together with the Portuguese catholic religion.

  15. "Instruído na fé, batizado em pé": batismo de africanos na Sé da Bahia na 1a metade do século XVIII, 1734-1742

    OpenAIRE

    Carlos Eugenio L\\u00EDbano Soares

    2009-01-01

    This article analyses the African identities found in the Sé parish, Salvador city, Bahia, in the first half of the 18th century, specially between 1734 and 1742, using for this the catholic baptism and death register books. The Sé was the political and administrative centre of the capital of the State of Brazil [The southern part of the Portuguese colonies in the Americas], and [then] the slave trade had reached unheard levels in the Colony. What is outstanding is the great presence of Afric...

  16. Leiomioma vascular nasal gigante Informe de un caso y su manejo endoscópico transnasal. Revisión de la literatura.

    Directory of Open Access Journals (Sweden)

    Willfred Burkhardt

    2009-11-01

    Full Text Available An intranasal vascular leiomyoma is extremely rare. Less than 1% of all leiomyomas originate in the head and neck area, and of these, only 3% are found in the nasal cavity. The most common symptoms are nasal obstruction, epistaxis and pain. A rare case of nasal vascular leiomyoma that developed in a 35 year old woman is reported. Transnasal endoscopic sinus surgery to perform a resection on the biggest nasal vascular leiomyoma ever found was made.

  17. O gigante adormecido vem pra rua: construções enunciativas de Johnnie Walker e Fiat durante as manifestações brasileiras de 2013

    Directory of Open Access Journals (Sweden)

    Carolina Fernandes da Silva Mandaji

    2014-04-01

    Full Text Available O tema deste trabalho são as manifestações ocorridas nos meses de junho e julho de 2013 em todo o Brasil. Trata-se de uma reflexão sobre as construções enunciativas de discursos midiáticos no cenário nacional e internacional.  Esta investigação se propõe a entender os processos enunciativos, e portanto, discursivos e interacionais no uso da materialidade sincrética e audiovisual de anúncios publicitários das marcas Johnnie Walker e Fiat. Tanto a campanha “Keep walking, Brazil” como  a “Vem pra rua” da Fiat foram (re contextualizadas em outros processos enunciativos durante as manifestações brasileiras. Será possível identificar que tipo de interação discursiva ocorre entre marcas e público a partir de tal (re contextualização? Qual relação enunciativa existe entre as marcas e as manifestações e quais são os papeis enunciativos e discursivos propostos por tal relação?  Tais perguntas irão nos levar ao contexto de produção das campanhas, mas também a uma nova apreensão de sentido pautada por processos enunciativos que não os das próprias marcas, mas sim, de novas posições enunciativas. A base metodológica guia-se pelos estudos da Semiótica Discursiva de A. J. Greimas e pelos pressupostos teóricos da Sociossemiótica proposto por Eric Landowski e nas pesquisas de Ana Claudia de Oliveira.

  18. Acromegaly and gigantism in the medical literature. Case descriptions in the era before and the early years after the initial publication of Pierre Marie

    NARCIS (Netherlands)

    W.W. de Herder (Wouter)

    2009-01-01

    textabstractIn 1886 Pierre Marie used the term "acromegaly" for the first time and gave a full description of the characteristic clinical picture. However several others had already given clear clinical descriptions before him and sometimes had given the disease other names. After 1886, it gradually

  19. 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.

  20. 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.

    1985-01-01

    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.

  1. Dependencia del tiempo de formación de los planetas gigantes con el tamaño de los planetesimales acretados.

    Science.gov (United States)

    Fortier, A.; Benvenuto, O. G.; Brunini, A.

    In the framework of the core instability hypothesis and according to the Nice model for the primordial orbital architecture of the Solar System, we study the formation of the giant planets considering several different laws for the size distribution of the accreted planetesimals. Our results show that, if most of the mass lies in small planetesimals (radii 30 - 100 meters), the formation of Jupiter, Saturn, Uranus and Neptune can be explained by the core instability model, avoiding any conflict with the estimated lifetime of protoplanetary discs. FULL TEXT IN SPANISH

  2. 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.

  3. Tricobezoar gástrico gigante: relato de caso e revisão da literatura Giant gastric trichobezoar: a case report and literature review

    Directory of Open Access Journals (Sweden)

    Rony Klaus Isberner

    2010-02-01

    Full Text Available Os autores descrevem um caso de massa abdominal epigástrica palpável associada a sintomas dispépticos em uma paciente jovem sem antecedentes patológicos. Estudos por imagem evidenciaram corpo estranho gástrico de "aspecto enovelado". A paciente foi submetida a gastrotomia via laparotomia, com retirada de um tricobezoar de 1.950 gramas.The authors describe the case of a palpable epigastric mass associated with dyspeptic symptoms in a young female patient with no previous pathologic history. Imaging studies demonstrated the presence of a gastric foreign body with an "entangled appearance". The patient underwent laparotomy and gastrotomy for removal of a trichobezoar weighing 1,950 grams.

  4. Dual electron-phonon coupling model for gigantic photoenhancement of the dielectric constant and electronic conductivity in SrTi O3

    Science.gov (United States)

    Qiu, Y.; Wu, C. Q.; Nasu, K.

    2005-12-01

    In connection with the recent experimental discovery on photoenhancements of the electronic conductivity and the quasi-static electric susceptibility in SrTiO3 , we theoretically study a photogeneration mechanism of charged and conductive ferroelectric domains in this perovskite type quantum dielectric. The photo-generated electron, being quite itinerant in the 3d band of Ti4+ , is assumed to couple weakly but quadratically with soft-anharmonic T1u phonons in this quantum dielectric, in view of the parity of this lattice vibration. The photo-generated electron is also assumed to couple strongly but linearly with the breathing type high energy phonons. Using a tight-binding model for electrons, we will show that this dual electron-phonon coupling results in two types of polarons, a “super-para-electric (SPE) large polaron” with a quasi-globle parity violation, and an “off-center type self-trapped polaron” with only a local parity violation. This SPE large polaron is shown to be equal to a singly charged (e-) and conductive ferroelectric domain with a quasi-macroscopic range. Two of such large polarons are shown to aggregate and form an SPE large bipolaron, which is still conductive. Various other bipolaron clusters are also shown to be formed in this electron-phonon coupled system. These large polarons have a high mobility and an enhanced quasi-static dielectric susceptibility. Effect of adulteration is also discussed.

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

    OpenAIRE

    Frederico Castelo Moura; Allan Christian Pieroni Gonçalves; Mário Luiz Ribeiro Monteiro

    2006-01-01

    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...

  6. 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)

  7. 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.

  8. Muerte súbita, taponamiento y síndrome coronario agudo como manifestación clínica de un aneurisma coronario gigante

    Directory of Open Access Journals (Sweden)

    José G. Galache Osuna

    2006-01-01

    Full Text Available Los aneurismas coronarios son una patolog��a infrecuente (0,5-3% de incidencia. Suelen asociarse con estenosis coronarias y la aterosclerosis es la etiología más frecuente. Nuestro paciente debutó con muerte súbita. Posteriormente presentó taponamiento cardíaco y a las 24 horas desarrolló un IAM inferior. La coronariografía mostró una gran dilatación esferoidal (4,5 × 5 cm en la coronaria derecha proximal. Se trató con resección del aneurisma y puente aortocoronario. La evolución suele ser asintomática. La rotura o la muerte súbita son formas raras de presentación. La actitud conservadora es el tratamiento más comúnmente aplicado. La indicación quirúrgica dependerá de la presencia de estenosis coronarias asociadas o de la existencia de complicaciones.

  9. Leiomioma vascular nasal gigante. Informe de un caso y su manejo endoscópico transnasal. Revisión de la literatura

    Directory of Open Access Journals (Sweden)

    Willfred Burkhardt

    2006-12-01

    Full Text Available El leiomiona vascular intranasal es extremadamente raro. Menos de 1% de todos los leiomiomas se localizan en cabeza y cuello y de éstos sólo 3% se encuentran en la cavidad nasal. Los síntomas clínicos más comunes son obstrucción nasal, epistaxis y dolor. Se informa el caso de un leiomioma vascular nasal en una mujer de 35 años cuyo tratamiento se hizo mediante cirugía endoscópica transnasal para resecar el leiomioma vascular nasal más grande hasta el momento se comunica en la literatura.

  10. 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)

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

    Directory of Open Access Journals (Sweden)

    Omar Moté Abou Mourad

    2009-10-01

    Full Text Available 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 pathological diagnosis was thymolipoma. Thymolipoma usually attains enormous dimensions by the time of diagnosis, and the occasional symptoms are related to compression of adjacent structures. Surgical resection is the treatment of choice and offers the only possibility of cure. The airway deserves special care during anesthesia induction.Timolipoma é uma rara neoplasia benigna do timo. Apresentamos o caso de um paciente do sexo masculino de 42 anos de idade com um volumoso tumor mediastinal, descoberto após a realização de radiografia de tórax devido a um acidente motociclístico. Não apresentava queixas e ao exame físico não havia particularidades. A TC de tórax revelava uma massa lipomatosa entremeada por tecido com densidade de partes moles. O paciente foi submetido a uma esternotomia mediana com extensão para toracotomia ântero-lateral esquerda, permitindo a exérese completa do tumor. O diagnóstico histopatológico foi de timolipoma. O timolipoma geralmente atinge grandes dimensões na época do diagnóstico, sendo os ocasionais sintomas relacionados à compressão de estruturas adjacentes. A ressecção cirúrgica é o tratamento de escolha e a única possibilidade de cura. A via aérea merece atenção especial durante a indução anestésica.

  12. Teratoma gigante de mediastino: achado cirúrgico pós-trauma torácico Giant mediastinal teratoma found during surgery after thoracic trauma

    Directory of Open Access Journals (Sweden)

    Paulo César Santos

    2007-06-01

    Full Text Available A maioria dos tumores mediastinais são assintomáticos e, portanto, são descobertos incidentalmente. O objetivo desse trabalho é descrever o caso de um paciente do sexo masculino, de 29 anos de idade, com grande aumento da área cardíaca após trauma torácico fechado, sendo submetido à toracotomia. Foi encontrada grande massa no mediastino e o diagnóstico anatomopatológico foi de teratoma mediastinal maduro.Most mediastinal tumors are incidentally diagnosed because they are asymptomatic. The aim of this paper is to report on the case of a 29-year-old male patient, who had an increase in cardiac area after blunt thoracic trauma. He was submitted to thoracotomy when a large mediastinal mass was found. The histopathological diagnosis was a mature mediastinal teratoma.

  13. Lipoma gástrico gigante sintomático tratado con gastrectomía subtotal laparoscópica: caso clínico

    OpenAIRE

    2013-01-01

    Gastric lipoma is a rare benign gastric tumor. We report a 62-year-old man, who presented with abdominal pain, vomiting and weight loss. An upper gastrointestinal endoscopy showed a gastric antral, submucosal tumor. Abdominal ultrasound and computed tomography revealed a large antral lesion with content of high echogenicity and fat density, measuring 11 x 6 cm. The patient was treated with a laparoscopic distal subtotal gastrectomy, and a Roux-en-Y reconstruction. The patient had no postopera...

  14. 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.

  15. Gigantic Trend of Container Vessels and Its Impact%集装箱船大型化趋势及其影响

    Institute of Scientific and Technical Information of China (English)

    李卫国; 李超; 周洪海

    2005-01-01

    近年来,随着国际间经济交往的加深,国际贸易的增长以及航运技术的不断发展,集装箱船的大型化趋势日益明显,这对班轮公司和集装箱港口都产生了深刻的影响。

  16. STATE OF THE ART OF THE GIGANTIC OCEAN ENGINEERING LIFTING SYSTEM%超大型海洋工程起重系统发展现状

    Institute of Scientific and Technical Information of China (English)

    刘振辉; 谭卫卫; 谭家华

    2006-01-01

    较为详细的介绍了世界上目前应用的两种超大型的起重系统即半潜式起重船和Single-lift起重系统及其工作原理;结合国内目前的现状,预测了超大型起重系统在国内的应用前景.

  17. 在四川盆地中部建设自流喷灌网%An Envisagement of A Gigantic Spray Irrigation System

    Institute of Scientific and Technical Information of China (English)

    黄跃华

    2001-01-01

    @@ 水的开发和利用,是西部大开发的核心问题之一.四川盆地虽然江河纵横,但盆中丘陵地区十年九旱,地渴人贫.对此,笔者有一梦想,就是在四川盆地中部,建一个巨型自流喷灌网络.如果成功,等于再造一个都江堰,这对川中农业和四川经济社会的发展将产生难以估量的影响.

  18. On Modern French Artist Janniot and his Gigantic Relief%论法国现代艺术家让尼俄及其巨型浮雕

    Institute of Scientific and Technical Information of China (English)

    祝重寿

    2008-01-01

    法国现代雕塑家让尼俄终身从事公共艺术,擅长室内大型浮雕,其作品场面宏大,且富有装饰性.本文对他在巴黎移民博物馆和巴黎现代艺术美术馆的两处浮雕做了细致地剖析,阐发了他在艺术史上的重要地位.

  19. The Laconic Calculation of the Gigantic Frame with Faultage%有断层巨型框架的简化计算

    Institute of Scientific and Technical Information of China (English)

    郑钧

    2008-01-01

    为弥补D值法无法考虑断层影响的缺陷,推导了框架侧移刚度的计算模型,同时考虑刚 域及剪切变形的影响,提出了有断层巨型框架的计算方法,算例表明该法具有良好的精度.

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

    OpenAIRE

    Buis, Emiliano J.

    2011-01-01

    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 ...

  1. Cepas gigantes de Candida albicans y su potencial de expresión/fenotípica en niños portadores del sindrome de Down

    OpenAIRE

    Ribeiro, Evandro Leão; Carvalhaes,Mara Silvia; Campos, Cerise de Castro; Ferreira, Wesley Magno; Cardoso,Cléver Gomes; Nagato, Gustavo Moraes; Souza, Niwmar Alves de; Dias, Sueli Meire da Silva; Scroferneker, Maria Lucia

    2006-01-01

    Los niños con el Sindrome de Down (SD), además de los factores que predisponen a la candidiasis bucal, presentan alteración cromosómica que afecta la estructura anatómica de la boca y compromete el sistema inmunológico. En este estudio se usaron 30 cepas de Candida albicans aisladas de la boca de los niños, siendo 25 (83.3%) portadores del SD y cinco (16.7%) sin este. Este hecho convierte a los niños portadores de este síndrome como grandes "cargadores" de levaduras predisponiéndolos a candid...

  2. Parallel gigantism and complex colonization patterns in the Cape Verde scincid lizards Mabuya and Macroscincus (Reptilia: Scincidae) revealed by mitochondrial DNA sequences.

    OpenAIRE

    2001-01-01

    The scincid lizards of the Cape Verde islands comprise the extinct endemic giant Macroscincus coctei and at least five species of Mabuya, one of which, Mabuya vaillanti, also had populations with large body size. Phylogenetic analysis based on DNA sequences derived from the mitochondrial cytochrome b, cytochrome oxidase I and 12S rRNA genes (711, 498 and 378 base pairs (bp), respectively) corroborates morphological evidence that these species constitute a clade and that Macroscincus is unrela...

  3. Parallel gigantism and complex colonization patterns in the Cape Verde scincid lizards Mabuya and Macroscincus (Reptilia: Scincidae) revealed by mitochondrial DNA sequences.

    Science.gov (United States)

    Carranza, S; Arnold, E N; Mateo, J A; López-Jurado, L F

    2001-08-07

    The scincid lizards of the Cape Verde islands comprise the extinct endemic giant Macroscincus coctei and at least five species of Mabuya, one of which, Mabuya vaillanti, also had populations with large body size. Phylogenetic analysis based on DNA sequences derived from the mitochondrial cytochrome b, cytochrome oxidase I and 12S rRNA genes (711, 498 and 378 base pairs (bp), respectively) corroborates morphological evidence that these species constitute a clade and that Macroscincus is unrelated to very large skinks in other areas. The relationships are ((M. vaillanti and Mabuya delalandii) (Mabuya spinalis and Macroscincus coctei (Mabuya fogoensis nicolauensis (Mabuya fogoensis antaoensis and Mabuya stangeri)))). The Cape Verde archipelago was colonized from West Africa, probably in the Late Miocene or Early Pliocene period. The north-eastern islands were probably occupied first, after which the ancestor of M. vaillanti and M. delalandii may have originated on Boavista, the ancestor of the latter species arriving on Santiago or Fogo later. The M. fogoensis--M. stangeri clade colonized the islands of Branco, Razo, Santa Luzia and São Vicente from São Nicolau and reached Santo Antão after this. Colonization of these northeastern islands was slow, perhaps because the recipient islands had not developed earlier or because colonization cut across the path of the Canary Current and the Northeast Trade Winds, the main dispersing agents in the region. Rapid extension of range into the southwestern islands occurred later in M. spinalis and then in M. vaillanti and M. delalandii. The long apparent delay between the origin of these species and their southwestern dispersal may have been because there were earlier colonizations of the southern islands which excluded later ones until the earlier inhabitants were exterminated by volcanic or climatic events. The evolution of large size in Macroscincus occurred in the northwestern islands and was paralleled in the eastern and southern islands by populations of M. vaillanti. Both cases of size increase in Cape Verde skinks were accompanied by the development of herbivory.

  4. 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.

  5. OPTIMIZACIÓN DE LA EXTRACCIÓN ENZIMÁTICA DE JUGO DE BANANO A PARTIR DE LOS CULTIVARES ENANO GIGANTE, FHIA-17 Y FHIA-23

    OpenAIRE

    2013-01-01

    En este trabajo se optimizó la extracción de una bebida de banano por métodos enzimáticos en tres cultivares. Se emplearon dos enzimas comerciales: una amilasa (Glucozyme-400) y una combinación de celulasa, hemicelulasa y p ectinasa (Macerex PM). Se optimizó el estado de madurez de la fruta, la variedad, el tipo de enzima y la dilución, usando como variables de respuesta la concentración de sólidos solubles ( o Brix) y el rendimiento de la extracción. La enzima amilasa no mostró un efecto pos...

  6. 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.

  7. Efeitos da Adubação e de Nematicida no Crescimento e na Produção da Palma Forrageira (Opuntia ficus indica Mill cv. Gigante

    Directory of Open Access Journals (Sweden)

    Teles Margareth Maria

    2002-01-01

    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.

  8. Estudo do crescimento de moluscos pertencentes a populações de Biomphalaria glabrata e B. tenagophila

    Directory of Open Access Journals (Sweden)

    Luiz A. Magalhães

    1969-01-01

    Full Text Available Os autores estudam, comparativamente o crescimento de duas populações de moluscos planorbídeos pertencentes às espécies B. glabrata e B. tenagophila. Concluem que não há diferença significativa entre o crescimento dos caramujos oriundos das populações estudadas.

  9. Estudos preliminares com bromoacetamida, um novo moluscicida

    Directory of Open Access Journals (Sweden)

    Naftale Katz

    1985-09-01

    Full Text Available A bromoacetamida tem sido testada como moluscicida na República Popular da China, para tratamento de criadouros de Oncomelania, hospedeiro do Schistosoma japonicum, com bons resultados. O produto é solúvel em água, o que simplifica seu uso. Foram feitos ensaios biológicos preliminares deste produto em caramujos adultos (Biomphalaria glabrata, B. tenagophila e B. straminea, recém-eclodidos e desovas. Paralelamente foram feitos ensaios com o pentaclorofenol para avaliar a suscetibilidade dos caramujos. O produto foi testado também sobre peixes, Lebistes reticulatus. Os moluscos testados mediam 8-10 mm de diâmetro; os recém-eclodidos tinham 1-3 dias de idade e as desovas 0-1 dia de idade. A temperatura da água durante os experimentos variou de 24,3 a 27,0°C. O produto foi ativo para caramujos adultos, recém-eclodidos e desovas, em concentrações em tomo de 1 a 4 ppm. Para os peixes o produto foi menos tóxico do que para os caramujos (CLço 7,5 ppm. Estes resultados indicam que a bromoacetamida apresenta propriedades moluscicidas promissoras para o controle da Biomphalaria spp.

  10. YAM (Dioscorea sp. CLONES YIELD IN DOURADOS (MS PRODUÇÃO DE CLONES DE CARÁ (Dioscorea sp. EM DOURADOS (MS

    Directory of Open Access Journals (Sweden)

    Néstor Antônio Heredia Zárate

    2007-09-01

    Full Text Available

    The aim of this work was to know yield characteristics of Mimoso, Caramujo, Roxo, Pezão and Florida, yam clones under environmental conditions in Dourados-MS. The results regarding to yield characteristics showed that it has been worked with two groups of clones: one group constituted by Caramujo and Pezão that produces rizhomes and tubers and the other one that produces only rizhomes. As far as rizhomes shape is concerned, Florida and Mimoso clones produced eggshape of regular conformation rizhomes. Total reached productivity showed that Caramujo was the most productive (38.077 t.ha-1 and Mimoso the least (19.187 t.ha-1. Caramujo tubers presented round shape what induces to make confusion with Taro. In quantitative terms, Caramujo produced 235.88% (24.217 t.ha-1 more tubers than Pezão.

    KEY-WORDS: Yam (Dioscorea sp.; productivity; rizhomes; tubers.

    O objetivo do trabalho foi conhecer as características produtivas dos clones de cará Mimoso, Caramujo, Roxo, Pezão e Flórida, quando cultivados em condições de Dourados (MS. Os resultados obtidos mostraram que utilizaram-se dois grupos de clones, quanto às características produtivas: um grupo formado por Caramujo e Pezão, que produz rizomas e tubérculos aéreos, e o outro que produz apenas rizomas. Quanto ao formato dos rizomas, observou-se que os clones Flórida e Mimoso produziram rizomas ovais

  11. 中国大企业怎么办?--国务院发展研究中心副主任陈清泰纵论培育中国大型企业%How the Gigantic Enterprises to Face the Future--Chen Qingtai, Vice Director of the State Department Development Research Center, Talks about Developing Gigantic Enterprises

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    @@ 90年代中期以来,企业面对着严峻的挑战.最重要的就是企业的外部环境在发生着急剧的变化,使得企业的状况特别是国有企业的状况随之发生变化,其中重要的表现就是企业两极分化.优势企业提高了市场占有率,与此同时,另外相当一部分企业陷入了困境.

  12. Problemas asociados a la construcción del africano en los medios de comunicación en España: análisis del tratamiento informativo de la crisis de Ruanda en Televisión Española

    OpenAIRE

    Sendín Gutiérrez, José Carlos

    2011-01-01

    Tesis Doctoral leída en la Universidad Rey Juan carlos en el año 2006. Director de la Tesis: Ricardo Pérez-Amat García Esta tesis forma parte de la línea de investigación que explora las formas que reviste la comunicación y la representación de otras culturas en nuestra sociedad. De forma específica, la tesis analiza la forma en que se presentó en Televisión Española la información sobre el genocidio ruandés de abril de 1994. Las conclusiones de la tesis aportan conocimiento relevante...

  13. Tectonic breccia of the Cabo Frio area, State of Rio de Janeiro, Brazil, intruded by Early Cretaceous mafic dyke: evidence of the Pan-African brittle tectonism? Brecha tectônica da área de Cabo Frio - RJ, intrudida por dique máfico do Eocretáceo: evidência do tectonismo rúptil do Pan-Africano?

    Directory of Open Access Journals (Sweden)

    Akihisa Motoki

    2011-03-01

    Full Text Available This paper presents the field descriptions and microscopic observations of a tectonic breccia in the basement gneiss of the Cabo Frio and Arraial do Cabo areas, State of Rio de Janeiro, Brazil, and its intrusive contact with the Early Cretaceous mafic dyke. At the sea cliff close to the Ilha do Japonês, there is an excellent contact outcrop between them. The tectonic breccia zone is 10 to 20m wide and has N30ºE direction. The breccia clasts are angular and characterized by auto-brecciation texture, and composed of breccia with similar aspect of the host tectonic breccia. The matrix is firmly consolidated by hydrothermalism and following silicification. The mafic dyke is 7 to 10m wide and of N45ºE direction. Along the contact, the dyke chilled margin featured by fine-grained basalt and prismatic joints can be observed. At the Conchas Beach and Arraial do Cabo city, there are four outcrops demonstrating the mafic dyke intrusion into the consolidated tectonic breccias. These outcrops prove that the tectonic breccias are older than the Early Cretaceous tholeiitic dykes. The fault breccias could have been formed during the brittle-phase tectonism of the last stage of the Pan-African Orogeny by hydrothermalism without magmatic activities, namely tectonic hydrothermalism. The existence of the clasts constituent of the breccia that are composed of breccia suggests that the fault movement and following hydrothermalism occurred repeatedly.Esse trabalho apresenta as descrições de campo e observações petrográficas de uma brecha tectônica no embasamento gnáissico das áreas de Cabo Frio e Arraial do Cabo, RJ, e seu contato intrusivo com um dique máfico do Eocretáceo. Na proximidade da ilha do Japonês, ocorre um excelente afloramento de contato entre esses litotipos. A zona da brecha tectônica tem 10 a 20 m de largura e tem direção de N30ºE. Os clastos da brecha são angulosos e caracterizados pela textura de auto-brechação, sendo similares aos de brecha tectônica. A matriz é firmemente consolidada por hidrotermalismo e silicificação. O dique máfico tem 7 a 10 m de largura e N45ºE de direção. Ao longo do contato, observa-se a margem de resfriamento do dique, caracterizada por basalto de granulometria fina e disjunções prismáticas. Na Praia das Conchas e Arraial do Cabo, ocorrem quatro afloramentos de contato, demonstrando a intrusão dos diques máficos nas brechas tectônicas consolidadas. Esses afloramentos comprovam que as brechas tectônicas silicificadas são mais antigas do que os diques toleíticos do Eocretáceo. As brechas poderiam ter sido formadas durante a fase hidrotermal e tal processo estaria associado ao tectonismo rúptil do estágio final da Orogenia Pan-Africana, sem atividades magmáticas. A existência dos clastos constituintes da brecha, que são compostos de brecha, sugere que os movimentos de falha e atividades hidrotermais ocorreram repetidamente.

  14. Nutrient intake in 5-17-year-old African boys and girls in a rural district of Kenya Aporte de nutrientes en chicos y chicas africanos de 5-17 años en un distrito rural de Kenia

    Directory of Open Access Journals (Sweden)

    S. Semproli

    2011-08-01

    Full Text Available Objective: To investigate relationships between nutritional status and growth among a sample of schoolchildren and adolescents living in a rural district of Kenya. Design: Cross-sectional nutritional and anthropometric survey. Setting: The data are from schools in a rural district of south-western Kenya. Subjects: Schoolchildren and adolescents aged between 5 and 17 years of age. Anthropometric measurements and interviews on dietary intake were carried out in 2001 and 2002 on 1,442 subjects. Results: In this African rural sample, the degree of malnutrition differs with age (increasing with age and sex (more accentuated in males. Several correlations (P A pesar de la emergencia en la prevalencia del sobrepeso en escolares de países en vías de desarrollo, se sigue observando una deficiencia de micronutrientes en la infancia. Algunos estudios realizados en Kenia han notificado algunos efectos beneficiosos de los suplementos dietéticos en algunos escolares pero no en otros. De hecho, estos estudios no detectaban la influencia de la ingesta nutricional sobre el crecimiento de los escolares por edad y sexo. Con el fin de investigar las relaciones entre el estado nutricional y el crecimiento entre escolares y adolescentes, diseñamos un estudio nutricional transversal que recogía datos de escuelas de educación primaria en un distrito rural de Kenia. Los individuos eran niños de entre 5 y 17 años. Se realizaron medidas antropométricas y entrevistas sobre la ingesta diaria en 2001 y 2002 en 1.442 individuos. En esta muestra rural africana, el grado de desnutrición difería con la edad (aumentando con la edad y el sexo (más acentuado en los chicos. Se observaron fuertes correlaciones (P < 0,05 entre las tasas de adecuación de los nutrientes y los valores antropométricos, particularmente en los chicos. No hubo correlaciones entre las características antropométricas y el sodio o la vitamina C (en chicos y chicas ni la vitamina A o el potasio (en las chicas. La malnutrición fue más evidente en individuos en la pubertad. La dieta fue deficiente en sodio, calcio y potasio. Aunque WAZ y BMIZ no mostraron relaciones significativas con los nutrientes en las chicas, las variables antropométricas se correlacionaron significativamente con los micronutrientes y la tiamina en los chicos. El diferente patrón de crecimiento en los niños y las niñas podría estar causado por las diferencias sexuales en la sensibilidad ambiental, el acceso a la comida y el gasto de energía.

  15. Projecto “Educação em biologia, educação para a saúde e educação ambiental para uma melhor cidadania” : análise de manuais escolares e concepções de professores de 19 países (europeus, africanos e do próximo oriente)

    OpenAIRE

    Carvalho, Graça Simões de; Clément, Pierre, 1809-1870.

    2007-01-01

    O projecto europeu de investigação “Biology, Health and Environmental education for better citizenship” (Biohead-Citizen) tem como objectivo compreender como o ensino da Biologia, da Educação para a Saúde e da Educação Ambiental podem promover uma melhor cidadania, através da análise de eventuais diferenças entre 19 países (13 europeus e 6 não europeus), associando-os a parâmetros controlados. Foram definidos seis temas para análise: “Cérebro Humano”, “Genética Humana”, “Evolução e Origem Hum...

  16. The Black Consciousness Movement in South Africa: A Product of The Entire Black World

    OpenAIRE

    Mgwebi Snail

    2009-01-01

    El trabajo ilustra cómo el surgimiento del Movimiento de Conciencia Negra en Sudáfrica puede estar diametralmente unido a la emergencia de los movimientos de Conciencia Negra y Black Power en América. Pretende demostrar además cómo, en el contexto africano, el Movimiento de Conciencia Negra fue impulsado por el nacionalismo africano y cómo ese nacionalismo fue moldeado y transformado por pensadores africanos de la década de los 50 y 60 en el Panafricanismo. El artículo también mostrará simili...

  17. O desenvolvimento do poder local em África: o caso dos municípios em Moçambique

    OpenAIRE

    Rocha, José António Oliveira; Zavale, Gonçalves Jonas Bernardo

    2015-01-01

    Moçambique, país africano colonizado por Portugal, teve uma administração local dupla, isto é, os africanos eram administrados pelas AT (Autoridades Tradicionais ou Régulos) e os europeus e os africanos com estatuto de assimilado estavam organizados em concelhos. Após a independência (1975), o país escolheu a via socialista de economia de plano e centralizada. Foi abolido o dualismo administrativo do sistema colonial. A Constituição de 1990 faz renascer a distinção entre áreas rurais e urbana...

  18. Comportamento de cultivares de coqueiros anão e híbridos no Distrito Federal Behavior of dwarf cultivars and hybrids of coconut in Brasília, Federal District

    Directory of Open Access Journals (Sweden)

    Víctor Hugo Vargas Ramos

    2004-08-01

    Full Text Available O cultivo do coqueiro na região Centro-Oeste pode tornar-se importante opção devido à crescente demanda por água de coco e à necessidade de os produtores diversificarem as atividades e melhorarem a renda. A demanda é totalmente atendida até hoje pela oferta de frutos de outros estados, tendo sido comercializadas 1.700 t via CEASA-DF, em 1994. Apesar da importância econômica, a produtividade nacional é baixa pelo uso de genótipos não selecionados e pouca informação a respeito das práticas culturais.Com o objetivo de avaliar cultivares e híbridos de coqueiro quanto ao crescimento vegetativo, a Embrapa Cerrados-DF, em parceria com a Embrapa Tabuleiros Costeiros, desenvolve o experimento em delineamento de blocos ao acaso, com quatro e dois tratamentos, respectivamente, de cultivares e de híbridos, com três repetições. Os tratamentos foram as cultivares: Anão-vermelho-da-malásia, Anão-verde-de-jiqui, Anão-vermelho-de-camarões e Anão-vermelho-de-gramame, e os híbridos: Anão-amarelo-de-gramame x Gigante-do-oeste-africano e Anão-vermelho-de-gramame x Gigante-do-brasil-da-praia-do-forte. As plantas foram avaliadas quanto ao crescimento, à circunferência do coleto, ao número e ao comprimento de folhas. O objetivo desta pesquisa foi avaliar cultivares e híbridos de coqueiro quanto ao crescimento vegetativo, visando a indicar os materiais com melhor aptição para o cultivo no DF. Das cultivares, o 'Anão-verde-de-jiqui' vem-se destacando no crescimento e na circunferência do coleto, e, entre os híbridos, não houve diferença.The coconut tree has become an important crop in Brazilian Central Region. Profitability, high demand for coconut water and the grower needs for supplementary source of income are the main factors responsible for the increasing interest for cultivation of coconut tree. A total of 1.700 t of coconut was commercialized at CEASA-DF in 1994 mainly imported from other regions. Despite the importance of

  19. El lenguaje de los negros congos de Panamá: estudio linguístico

    Directory of Open Access Journals (Sweden)

    John M. Lipski

    1986-06-01

    Full Text Available Es indiscutible la influencia africana sobre el español de la región caribeña; y sin embargo la naturaleza de los contactos hispano-africanos de lossiglos pasados es poco entendida. Al examinar los documentos históricos quellegan hasta el siglo presente, se pone de manifiesto la existencia de modalidades distintamente afrohispánicas entre los esclavos y peones de origen africano.

  20. DESARROLLO PROGRESIVO DE ONDA J GIGANTE Y PROLONGACIÓN EXTREMA DEL INTERVALO QT EN LA HIPOTERMIA INDUCIDA / Progressive development of giant J wave and extreme prolongation of QT interval in induced hypothermia

    Directory of Open Access Journals (Sweden)

    Yaniel Castro Torres

    2013-07-01

    Full Text Available Resumen: La aparición de ondas J es el suceso más común observado en el electrocardiograma de un paciente con hipotermia. Se presenta el caso de un hombre de 47 años, que le fue inducido un paro cardíaco mediante hipotermia para una cirugía cardíaca. En el trazo electrocardiográfico se evidencia el desarrollo progresivo de una onda J exuberante. Estas ondas pueden simular un infarto agudo de miocardio y se consideran una variable predictora de arritmogénesis. / Abstract: The appearance of J waves is the most common event observed in the electrocardiogram of a patient with hypothermia. We report the case of 47 years-old man, who underwent cardiac arrest using hypothermia for cardiac surgery. In the electrocardiographic tracing the progressive development of giant J waves is evident. These waves can mimic acute myocardial infarction and are considered a predictor of arrhythmogenesis.

  1. Evaluación de los pretratamientos con ácido sulfúrico diluido y AFEX en la biomasa lignocelulósica del tipo pasto gigante “Pennisetum Sp”

    OpenAIRE

    Mateus Fontecha, Lady

    2011-01-01

    El objetivo de esta investigación fue estudiar la efectividad del pretratamiento con ácido sulfúrico diluido y la explosión de fibras con solución de amoníaco (AFEX) sobre la biomasa lignocelulósica de Pennisetum sp en la hidrólisis de carbohidratos fermentables para la producción de etanol. En el pretratamiento con ácido sulfúrico se estudio el efecto de la temperatura (110, 130, 150, 170 y 190 °C) y la concentración del ácido [0,8; 1,2 y 2,0 % (p/p)], mientras que en el pretratamiento AFEX ...

  2. Teratoma cervical congênito gigante: relato de caso e revisão quanto às opções terapêuticas Giant congenital cervical teratoma: case report and review about therapeutic options

    Directory of Open Access Journals (Sweden)

    Camila Ferro Miele

    2011-12-01

    Full Text Available OBJETIVO: Relatar um caso de teratoma cervical congênito, destacando a gravidade e as dificuldades terapêuticas associadas. DESCRIÇÃO DO CASO: Mãe de 30 anos, com gestação por fertilização assistida. Com 23 semanas, diagnosticada malformação cervical fetal à direita. Parto cesáreo por indicação fetal com 31 semanas. Recém-nascido masculino, peso ao nascer de 1800g, Apgar 4 e 9, com volumoso processo expansivo à direita, ocupando toda a região cervical, comprometendo a mandíbula e estendendo-se para o terço superior do tórax. Com 40 horas de vida, apresentou insuficiência cardíaca congestiva de alto débito por roubo de fluxo pelo tumor. A partir de 54 horas de vida, houve progressiva deterioração hemodinâmica e respiratória, com hipotensão, anúria e labilidade de oxigenação, refratárias às aminas vasoativas, reposição de volume e aumento do suporte ventilatório. Indicada abordagem cirúrgica para ressecção tumoral, todavia o paciente não apresentou estabilidade clínica que permitisse seu transporte ao centro cirúrgico e faleceu com 70 horas de vida. COMENTÁRIOS: O caso demonstra as dificuldades relacionadas à abordagem pós-natal dos teratomas cervicais volumosos. Apesar do diagnóstico pré-natal, o paciente evoluiu com obstrução de vias aéreas, complicada por um choque cardiogênico refratário, que culminou no óbito. A abordagem intraparto é fundamental nesses pacientes, consistindo em exérese tumoral, enquanto a manutenção da circulação materno-fetal permite a oxigenação fetal contínua. A evolução neonatal no caso descrito é condizente com a literatura que mostra prognóstico reservado quando não é realizada a abordagem cirúrgica intraparto.OBJECTIVE: To report a case of congenital cervical teratoma, highlighting the severity and the therapeutic difficulties associated. CASE DESCRIPTION: A 30-year old mother, with pregnancy by assisted fertilization. At 23 weeks, a cervical fetal malformation was diagnosed. A cesarean section was indicated with 31 weeks due to fetal distress. A male newborn infant with birth weight of 1800g and Apgar score of 4/9 presented a large right cervical tumor, with extensions to the mandible and to the upper chest. Patient presented congestive heart failure due to flow steal by the tumor 40 hours after birth, which caused progressive respiratory, hemodynamic and renal deterioration refractory to vasopressors, volume replacement and increased ventilatory support. Tumor resection was indicated, but the clinical instability of the patient did not allow his transport to the operating room and the infant died 70 hours after birth. COMMENTS: The case is representative of the difficulties related to postnatal treatment of bulky cervical teratomas. Despite prenatal diagnosis, the patient developed airway obstruction, complicated by refractory cardiogenic shock. The surgical approach during delivery is crucial for survival. Nowadays, management includes surgical removal of the tumor while maintaining the maternal-fetal circulation, allowing continuous fetal oxygenation. The clinical course described in the case is consistent with the literature that reports poor prognosis when the intra-partum surgical approach is not performed.

  3. Gigantic Ship Loading Life: New View on "Titanic"%承载生命的巨轮——全新视角解读《泰坦尼克》

    Institute of Scientific and Technical Information of China (English)

    林易

    2006-01-01

    @@ 我们生活的地球,就像在浩淼大海上孤独航行的泰坦尼克,她承载着万千生灵,从亘古走向未来.人类,作为地球这艘巨轮上最具智慧和能力的生命,我们文明的方向以及对自己行为的把握能力,最终会决定地球号巨轮能否平安地行驶下去.

  4. ISO 9000族标准在我国大型工程项目质量管理中的应用%Application of ISO9000 family standards in quality management of gigantic engineering project

    Institute of Scientific and Technical Information of China (English)

    张普

    2002-01-01

    以ISO9001:2000 为核心,美国军用标准体系的系统工程思想为指南,将ISO9000族标准引入我国大型工程项目的质量管理工作,构建了我国大型工程项目质量管理的文件体系.

  5. Analysis and Design of a Gigantic Database Management Information System with EIIS Development Method Theory%用EIIS开发方法论分析设计大型数据库管理信息系统

    Institute of Scientific and Technical Information of China (English)

    王彦伟; 郑英

    2002-01-01

    该文介绍了一种数据库管理信息系统的系统分析和系统设计的开发方法论--EIIS开发方法论.并以武汉市计划生育综合信息管理系统为例,阐述了该方法的应用.

  6. 乘电脑下乡东风,行远程教育大船%Riding the East Wind of Computers Go to the Countryside,Sailing the Gigantic Ship of Distance Education

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    近来,国家为扩大内需、缩小城乡差距推出“电脑下乡”政策,大量农村居民以相当低廉的价格将电脑搬回家。但是,由于农村居民文化水平相对较低,电脑的利用率低下。很多农村居民往往只是用电脑玩玩游戏、聊聊天,或者干脆扔在一边,任凭其蒙尘和贬值,为此,农村电脑的实际利用率亟待提高。

  7. One case of gigantic recurrent incisional hernia in abdominal wall diagnosed by CT%腹壁巨大复发性切口疝的CT诊断1例

    Institute of Scientific and Technical Information of China (English)

    张福平; 孙清荣

    2005-01-01

    患者女,69岁,胆囊切除术后14年,右上腹切口处出现可复性包块13年,曾做端修补术,半年后再次复发。体检见包块呈类圆形,约20cm×20cm×30cm大小,位于斜形手术疤痕下方,包块表面皮肤无红肿,无静脉怒张,

  8. 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)

  9. 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.

  10. Calculation of cooling internal circuits loss of load curve in giant electric machines; Calculo da curva de perda de carga dos circuitos axiais internos de refrigeracao de maquinas eletricas gigantes

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Hilton Penha [Parana Univ., Curitiba, PR (Brazil). Dept. de Engenharia Mecanica. Dept. de Engenharia do Produto; Passos, Alex Sandro Barbosa [Parana Univ., Curitiba, PR (Brazil). Dept. de Engenharia Mecanica. Dept. de Pesquisa e Desenvolvimento do Produto

    2001-07-01

    This article describes a method for calculation of the loss of load curve for the ventilation axial circuits. The method assumes the ventilation circuit representation in a way similar to the electrical circuits. The great difficulty of circuit solution resides in the non linearity of the loss of load resistances and the equations relating the pressures and flows. The method is based on the association of the resistance curves of loss of load in a such way that, when the resistance curve of the total circuit loss of load is obtained, the blower operation point can be easily obtained and, consequently, the individual flows for each section of the circuit.

  11. A new gigantic sauropod dinosaur from the Middle Jurassic of Shanshan, Xinjiang%新疆鄯善中侏罗世巨型蜥脚类恐龙的发现

    Institute of Scientific and Technical Information of China (English)

    吴文昊; 周长付; Oliver Wings; 关谷透; 董枝明

    2013-01-01

    本文首次报道了鄯善地区中侏罗统齐古组产出一新的、原地保存的巨型蜥脚类恐龙—鄯善新疆巨龙(Xinjiangtitan shanshanesis gen.et sp.nov.).其特征为:倒第2节颈椎在腹侧后1/4处向后发育一条棱嵴,并在后关节面下形成一小的半圆形突;最后两节颈椎很长(其长度之和为股骨、胫骨长度之和的63%);第1荐肋不参与构成荐椎轭;股骨非常粗壮(远端最大宽度为股骨长度的33%).支序分析显示新疆巨龙(新属)与马龙溪龙互成姊妹群,无疑为马门溪龙科中的一个新的分类群.但新疆巨龙(新属)还具有一些更接近于梁龙类的特征,包括发育明显的栖肌突、较短的后肢和股骨第4转子位于股骨后侧内缘等.新疆巨龙(新属)的体长推算为30~32 m.

  12. Derivación biliopancreática y resección simultánea de masa adiposa ulcerada gigante en paciente con Índice de Masa Corporal de 75

    OpenAIRE

    Mario Rodríguez López; David Pacheco; Marta Gonzalo; Rosalía Velasco; Sara Mambrilla; Martín Bailón; Ramón Campillo; Ruth Martínez; Enrique Asensio; José Ignacio Blanco; Baltasar Pérez-Saborido; Daniel de Luis

    2014-01-01

    La Cirugía Bariátrica es la mejor opción terapéutica de la obesidad mórbida con índice de masa corporal ≥ 40 kg/m². A pesar del elevado riesgo de complicaciones post-quirúrgicas y nutricionales que presenta, la derivación biliopancreática de Scopinaro ha demostrado los mejores resultados de pérdida del exceso de peso y reducción de patologías asociadas. Esta fue la técnica realizada en una mujer de 52 años (peso = 174 kg, talla = 152 cm, IMC = 75,3 kg/m²), optando por abordaje vía abierta por...

  13. Ciclo biológico e predação de três espécies de coccinelídeos (Coleoptera, Coccinellidae) sobre o pulgão-gigante-do-pinus Cinara atlantica (Wilson) (Hemiptera, Aphididae)

    OpenAIRE

    Oliveira,Nádia Cristina de; Wilcken, Carlos Frederico; Matos,Carlos Alberto O. de

    2004-01-01

    Afídeos do gênero Cinara Curtis são importantes pragas de coníferas em vários países. No Brasil Cinara atlantica (Wilson, 1919) tem causado danos em plantações comerciais de Pinus spp. e o controle biológico com predadores pode ser uma opção melhor que o controle químico. Este trabalho teve por objetivo estudar a biologia e a capacidade de predação dos coccinelídeos Hippodamia convergens Guérin-Méneville, 1842, Cycloneda sanguinea (Linnaeus, 1763) e Eriopis connexa (German, 1824) (Coleoptera,...

  14. 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%.

  15. 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.

  16. Case report 509: Proteus syndrome

    Energy Technology Data Exchange (ETDEWEB)

    Burnstein, M.I.; Kottamasu, S.R.; Katz, M.E.; Weiss, L.

    1988-10-01

    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.

  17. Endocrine glands

    Science.gov (United States)

    ... Diabetes Gigantism Diabetes insipidus Cushing Disease Watch this video about: Pituitary gland Testes and ovaries: Lack of sex development (unclear genitalia) Thyroid: Congenital hypothyroidism Myxedema Goiter ...

  18. Prospects for area-wide integrated control of tsetse flies (Diptera:Glossinidae and trypanosomosis in sub-Saharan Africa Perspectivas para el control integrado abarcativo del área de moscas tse-tsé (Diptera: Glossinidae y la tripanosomiasis en el África sub-Sahariana

    Directory of Open Access Journals (Sweden)

    Marc J.B. Vreysen

    2006-07-01

    Full Text Available Countries in sub-Saharan Africa are among the least developed in the world and hunger and poverty remains widespread in most of the rural communities. Reducing hunger and chronic under nourishment through the introduction of productive livestock as a source of traction and manure for crop production, transport, milk and meat is deemed to be a fundamental first step towards better rural development. The presence of the tsetse fly in one third of the African continent and the disease trypanosomosis it transmits is considered the major barrier to the development of productive livestock. Despite the yearly administration of 35 million doses of trypanocidal drugs (at US$ 1 per dose, African farmers lose 3 million cattle every year to the disease and annual direct economic losses are estimated at US$ 600 to 1200 million. Tsetse flies mainly affect the rural poor and are rightfully considered 'a root cause of poverty ' in Africa . The most desirable way of containing the disease trypanosomosis is undoubtedly the elimination of entire populations of the vector from delimited geographical areas using an integration of various control tactics, i.e. an areawide integrated pest management (AW-IPM approach. Efficient methods to suppress or even eliminate tsetse populations have been available for the last 50 years and are mostly based on the use of insecticides or entail devices that attract and kill. Nevertheless, despite gigantic efforts in the past century, there are only a few examples where the elimination of tsetse flies has proven to be sustainable, e.g. the elimination of Glossina pallidipes Austen from South Africa in the 1950 's using mainly aerial spraying of residual insecticides or the creation of a zone free of Glossina austeni Newstead on Unguja Island of Zanzibar (1994-1997 through the integration of various control tactics including the release of sterile insects. The decentralisation of the tsetse control offices resulting in a shift from

  19. European Union's support programmes to African cinema: outcomes to their practices

    OpenAIRE

    Domarkaite, Marija

    2014-01-01

    Tese de mestrado, Cultura e Sociedade na Europa, Universidade de Lisboa, Faculdade de Letras, 2014 A União Europeia tem despendido consideráveis somas em programas de apoio ao cinema africano. Mas terão estes programas tido resultados positivos em todos os casos? Quais são as opiniões dos beneficiários do apoio e de outros intervenientes no sector cinematográfico africano? O grande paradoxo reside em que, mesmo com o apoio da União Europeia, em muitos casos, esses filmes não são acessíveis...

  20. De "negros" y "afros" en Veracruz.

    OpenAIRE

    Hoffmann, Odile

    2010-01-01

    Hablar de la población de origen africano en Veracruz nos obliga a aceptar contradicciones que borran las fronteras entre grupos étnicos, entre colectivos sociales y entre categorías culturales. No buscamos las "huellas de africanía" o las evidencias de su "tercera raíz", sino que nos interesa resaltar el hecho de que las poblaciones negras o de origen africano son parte integral de nuestra historia y nuestro presente, sin fragmentación ni exotismo. Nos interesa entender dónde se ubican, hoy,...

  1. Las fuentes ib??rica para la historia de Tetu??n (siglos XVI y XVII)

    OpenAIRE

    1995-01-01

    La historia de Tetu??n despierta ecos profundos en nuestra propia historia. La ciudad, nacida al calor del exilio hispano musulm??n consecuente del final del Islam espa??ol, mantuvo un foco de hostilidad activa contra Espa??a durante los siglos XVI y XVII. La lucha, perdida en Granada se prolong?? en el N. africano, tomando aqu?? la forma de ofensiva mar??tima contra las costas y mares peninsulares. Las potencias ib??ricas ocuparon plazas fuertes en el litoral norte-africano. Este resumen nos...

  2. Suscetibilidade aos agentes quimioterápicos de isolados de Schistosoma mansoni oriundos de pacientes tratados com oxamniquine e praziquantel e não curados

    Directory of Open Access Journals (Sweden)

    Neusa Araújo

    1996-10-01

    Full Text Available Foram estudados dez isolados de Schistosoma mansoni provenientes de pacientes residentes em Itaquara, Bahia, Brasil, tratados com oxamniquine eposteriormente com praziquantel, e ainda assim não curados. Caramujos (Biomphalaria glabrataj foram expostos a miracídios provenientes das fezes dos pacientes. Cercãrías eliminadas por estes caramujos e por moluscos coletados no peridomicílio dos pacientes foram utilizadas para infecção experimental de camundongos albinos. Os animais infectados foram tratados em dose única, via oral, com oxamniquine (25, 50 e 100 mg/kg ou praziquantel (100, 200 e 400mg/kg. Foram realizados estudos de análise e comparação de DNA de cercãrías de S. mansoni eliminadas pelos caramujos e de vermes adultos recolhidos de camundongos infectados experimentalmente com os isolados dos 10 pacientes e ainda de cercãrías de S. mansoni eliminadas por moluscos naturalmente infectados coletados em Itaquara. A cepa LE (mantida rotineiramente no laboratório foi usada como padrão de comparação da resposta aos agentes esquistossomicidas administrados. As respostas terapêuticas foram significativamente diferentes entre alguns dos isolados embora não fosse possível caracterizar nenhum como resistente. A análise dos perfis de amplificação de DNA nas cercãrías e nos vermes adultos dos isolados de S. mansoni demonstrou baixo grau de variabilidade indicando que estes são geneticamente próximos e revelando a ausência de rearranjos globais dentro dos genomas.

  3. Predation of Biomphalaria glabrata during the development of Belostoma anurum (Hemiptera, Belostomatidae Predação de Biomphalaria glabrata durante o desenvolvimento de Belostoma anunan (Hemiptera, Belostomatidae

    Directory of Open Access Journals (Sweden)

    M.H. Pereira

    1993-10-01

    Full Text Available Belostoma anurum was reared under laboratory conditions. Specimens were exposed to semi-natural conditions of photo period. The mortality rate was 26.3% during the post embryonic period (38.6 ± 0.7 days. During this time the average predation of Biomphalaria glabrata was of 99.0 ± 9.4 snails. The mean increment ratio of length and dry weight per instar was of 1.4 ± 0.1 and 2.8 ± 0.5, respectively. The predation by B. anurum adults can be divided into two different periods: phase I (4.8 ± 1.4 snails/day and phase II (1.8 ± 0.5 snails/day. The higher predation in phase I suggested the sexual maturation of the belostomatid.Belostoma anurum foi criada no laboratório em condição semi-natural de fotoperíodo. A taxa de mortalidade durante o período pós-embrionário (38,6 ± 0,7 dias foi de 26,3%. Durante este período a predação média de B. glabrata foi de 99,0 ± 9,4 caramujos. A média de incremento de comprimento e de peso seco por estádio ninfal foi de 1,4 ± 0,1 e 2,8 ± 0,5, respectivamente. A predação por adultos de B. anurum pode ser dividida em duas fases significativamente distintas: fase I (4,8 ± 1,4 caramujos/dia e fase II (1,8 ± 0,5 caramujos/ dia. A maior predação verificada na fase I deve-se provavelmente à maturação sexual do belostomatídeo.

  4. Coastal Ocean Circulation Experiment off Senegal (COCES)

    Science.gov (United States)

    2011-09-30

    Pierre-Marie Poulain Istituto Nazionale di Oceanografia e di Geofisica Sperimentale Borgo Grotta Gigante, 42/c 34010 Sgonico (Trieste), Italy...ORGANIZATION NAME(S) AND ADDRESS(ES) Istituto Nazionale di Oceanografia e di Geofisica Sperimentale,Borgo Grotta Gigante, 42/c,34010 Sgonico (Trieste

  5. Surface Circulation in the Northeastern Mediterranean (NEMED)

    Science.gov (United States)

    2011-09-30

    NEMED) Pierre-Marie Poulain Istituto Nazionale di Oceanografia e di Geofisica Sperimentale Borgo Grotta Gigante, 42/c 34010 Sgonico (Trieste...Istituto Nazionale di Oceanografia e di Geofisica Sperimentale,Borgo Grotta Gigante, 42/c,34010 Sgonico (Trieste), Italy, 8. PERFORMING ORGANIZATION

  6. Near-Surface Dispersion and Circulation in the Marmara Sea (MARMARA)

    Science.gov (United States)

    2010-01-01

    MARMARA) Pierre-Marie Poulain Istituto Nazionale di Oceanografia e di Geofisica Sperimentale Borgo Grotta Gigante, 42/c 34010 Sgonico...S) AND ADDRESS(ES) Istituto Nazionale di Oceanografia e di Geofisica Sperimentale,Borgo Grotta Gigante, 42/c,34010 Sgonico (Trieste), Italy, 8

  7. Photoionization models for giant h ii regions

    Directory of Open Access Journals (Sweden)

    Gra´zyna Stasi´nska

    2000-01-01

    Full Text Available Revisamos las fuentes de incertidumbre en los modelos de fotoionizaci on de regiones H II gigantes. Tambi en discutimos el problema de la temperatura electr onica a la luz de los ajustes de modelos en tres regiones H II gigantes.

  8. Estudos preliminares com bromoacetamida, um novo moluscicida

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    Naftale Katz

    1985-09-01

    Full Text Available A bromoacetamida tem sido testada como moluscicida na República Popular da China, para tratamento de criadouros de Oncomelania, hospedeiro do Schistosoma japonicum, com bons resultados. O produto é solúvel em água, o que simplifica seu uso. Foram feitos ensaios biológicos preliminares deste produto em caramujos adultos (Biomphalaria glabrata, B. tenagophila e B. straminea, recém-eclodidos e desovas. Paralelamente foram feitos ensaios com o pentaclorofenol para avaliar a suscetibilidade dos caramujos. O produto foi testado também sobre peixes, Lebistes reticulatus. Os moluscos testados mediam 8-10 mm de diâmetro; os recém-eclodidos tinham 1-3 dias de idade e as desovas 0-1 dia de idade. A temperatura da água durante os experimentos variou de 24,3 a 27,0°C. O produto foi ativo para caramujos adultos, recém-eclodidos e desovas, em concentrações em tomo de 1 a 4 ppm. Para os peixes o produto foi menos tóxico do que para os caramujos (CLço 7,5 ppm. Estes resultados indicam que a bromoacetamida apresenta propriedades moluscicidas promissoras para o controle da Biomphalaria spp.Bromocetamide has been tested as molluscicide, with good results, in the People's Republic of China, on Oncomelania, host of Schistosoma japonicum. We have conducted preliminary assays with bromoacetamide on adult snails (B. glabrata, B. tenagophila and B. straminea, newly hatched smails and egg-masses. This product has been also tested on fishes (Lebistes reticulatus. Comparative assays have been made with pentaclorophenol to evaluate the suceptibility of the snails. Snails tested had a diameter of 8-10 mm; the newly hatched were 1-3 days old and the eggs-masses. 0-1 day old. The temperature of the water varied from 24.3 to 27.5° C. Bromoacetamide was active on adult and newly hatched snails and egg-masses, in concentrations from 1-4ppm. The product was less toxic for jish (LC90 = 7,5 ppm. These results indicate that bromoacetamide has promising molluscicide

  9. Caracterização da microbiota bacteriana de Biomphalaria glabrata (Say, 1818)(Mollusca: Gastropoda)

    OpenAIRE

    Silva, Tatiana Maria da

    2012-01-01

    Devido a grande importância da microbiota no desenvolvimento de parasitas nos invertebrados, muitos estudos vêm sendo desenvolvidos para o melhor entendimento desta interação. Desta forma, a associação entre microrganismos e seus hospedeiros invertebrados, vetores de doenças, está se tornando cada vez mais evidente. Com base nisto, o objetivo do presente estudo foi caracterizar a microbiota bacteriana de caramujos da espécie Biomphalaria glabrata, principal hospedeiro interm...

  10. Condições atuais da esquistossomose no "Dique do Tororó" em Salvador, Bahia

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    Ruth B. Amorim

    1976-06-01

    Full Text Available Os Autores apresentam os resultados de observações realizadas entre os anos de 1971 a 1974 sobre a incidência humana da esquistosomose no Dique do Tororó, em Salvador, Bahia, após alí terem sido realizadas melhorias pela engenhària sanitária e medidas de combate biológico ao caramujo vetor pelo uso de peixes predadores. Comparando com os resultados obtidos por outros Autores em 1960, concluem que o Dique do Tororó não mais representa uma importante fonte de propagação da esquistosomose.

  11. 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

    Directory of Open Access Journals (Sweden)

    WALDIR SEBASTIÃO DE FARIA

    2002-08-01

    Full Text Available 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, na Fazenda Experimental da Faculdade de Agronomia e Medicina Veterinária da Universidade Federal de Mato Grosso, localizada no município de Santo Antônio do Leverger. Avaliou-se o comportamento dos cinco genótipos quanto à germinação de sementes e ao crescimento das mudas provindas de sementes colocadas nas posições horizontal e vertical, e mantidas a 50% de sombra ou a pleno sol. A combinação fatorial desses fatores resultou em 20 tratamentos, que foram dispostos no delineamento inteiramente casualizado, com três repetições. As características avaliadas foram as seguintes: germinação acumulada, percentagem de germinação, percentagem de mudas aptas a serem transplantadas para o campo, altura das mudas, número de folhas, circunferência do coleto, peso da muda e peso da parte aérea. O híbrido (AAG x GOA e o AVG apresentaram, respectivamente, maiores e menores valores para as características: percentagem de germinação, percentagem de mudas aptas a irem para o viveiro, número de folhas, circunferência do coleto e de altura aos 30; 60 e 90 dias após o plantio no viveiro. As mudas de maiores pesos corresponderam ao híbrido (AVG x GBrPF e as de menores pesos, ao AAM. O híbrido AVG x GBrPF produziu mudas com parte aérea mais pesada e o AVG, as mais leves. As mudas obtidas a partir de sementes sob sombra de 50 % apresentaram maiores alturas e pesos. As sementes colocadas na posição horizontal produziram mudas mais altas aos 30 e

  12. Quênia: crise política, rivalidades étnicas e o problema do Estado-Nação

    Directory of Open Access Journals (Sweden)

    Márcio Santos de Santana

    2010-10-01

    Full Text Available O presente artigo busca analisar a recente crise política e humanitária que abala a República do Quênia e representa um dos mais graves casos dos confrontos étnicos aos quais o continente africano presencia.

  13. Coetzee, Nooteboom, e o “ilusionismo realista”

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    Felipe Charbel Teixeira

    2011-08-01

    Full Text Available O artigo analisa romances escritos pelo sul-africano J. M. Coetzee e pelo holandês Cees Nooteboom como modo de propor algumas questões sobre o significado do realismo na história literária ocidental.

  14. Editorial: Geopolítica y solidaridad en el siglo XXI

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    Jesús A. Osuna Ceballos

    2015-01-01

    Full Text Available El 26 de mayo de 2013, en el marco de la celebración de los 50 años de la fundación de la Unión Africana, en Addis Abeba, capital de Etiopía, la Señora Dilma Rousseff, Presidenta de Brasil, anunció la condonación de la deuda externa de 870 millones de dólares de un conjunto de doce países africanos, entre los cuales figuran la República del Congo, Sudán, Gabón y Guinea Ecuatorial, países gobernados por dictadores a quienes se les acusa de violación de los derechos humanos, y en algunos casos de genocidio. Gobernantes que han accedido al poder mediante golpes de estado, manteniendo su mandato, en algunos casos a perpetuidad, como Teodoro Obiang Mguena, realizando “elecciones frecuentes, libres y democráticas”, con resultados invariablemente predecibles. ¿Gesto humanitario el de Brasil con los países africanos?. Según opinión de expertos, Brasil tomó esa decisión para que su Banco de Desarrollo Económico y Social pueda financiar proyectos de empresas brasileñas en aquellos estados africanos. Prevaleció el interés económico y el posicionamiento de Brasil en el continente africano.

  15. El significado de África en el desarrollo del arte moderno europeo

    OpenAIRE

    Konerding, Petra; Murillo Fuentes, Eugenio

    2005-01-01

    A mediados del Siglo XIX, el arte africano llega a Europa como rareza de un mundo primitivo. No obstante, para los artistas de la época se presenta como antídoto contra la fatiga social y como respuesta a su búsqueda de lo original.

  16. Contribuição ao estudo da biologia de Biomphalaria occidentalis Paraense, 1981 e de Biomphalaria tenagophila (d'Orbigny, 1835, em condições de laboratório

    Directory of Open Access Journals (Sweden)

    Maísa Rose Domenico Elmor

    1992-10-01

    Full Text Available Com o objetivo de comparar a duração do período embrionário, a fecundidade e a fertilidade de Biomphalaria occidentalis Paraense, 1981 com a de B, tenagophila (d'Orbigny, 1835, exemplares de ambas as espécies foram criados em aquários dotados das mesmas características. Os ovos depostos pelos caramujos foram contados sob lupa binocular e seu desenvolvimento embrionário foi observado até a eclosão. Assim foi obtido o número total de posturas e de ovos por caramujo, bem como o número total de ovos eclodidos por postura para cada período de trinta dias, ou seja, a taxa de eclosão por período. O experimento teve a duração de doze meses e os resultados obtidos são válidos para condições de laboratório.

  17. Casos autoctones de esquistossomose mansonica em criancas de Recife, PE

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    Constanca Simoes Barbosa

    2013-08-01

    Full Text Available OBJETIVO : Investigar criadouros com moluscos hospedeiros e casos humanos autóctones para esquistossomose. MÉTODOS : Entre julho de 2010 e setembro de 2012 foram realizados: (1 levantamento malacológico para busca ativa de criadouros, coleta e identificação de caramujos Biomphalaria positivos para Schistosoma mansoni em Recife, PE; (2 inquérito de prevalência com 2.718 escolares, de sete a 14 anos, para diagnóstico de casos de esquistossomose; (3 exame clínico e ultrassonografia nos casos positivos para S. mansoni. Os casos foram investigados quanto à sua autoctonia e avaliados clinicamente. Os casos e criadouros foram georreferenciados e espacializados. RESULTADOS : Foram identificados 30 criadouros de B. straminea , quatro deles potenciais focos de transmissão, uma vez que os testes moleculares identificaram DNA de S. mansoni nos caramujos coletados. Foram diagnosticadas 14 crianças com esquistossomose; entre elas, cinco foram consideradas casos autóctones da doença. CONCLUSÕES : Ações emergenciais pela vigilância em saúde são necessárias para evitar que a esquistossomose se endemize em Recife, como acontece em localidades litorâneas do estado de Pernambuco.

  18. Resistência de cepa de Biomphalaria tenagophila, originária de Londrina (Paraná, Brasil à infecção por duas cepas de Schistosoma mansoni

    Directory of Open Access Journals (Sweden)

    Pedro P. Chieffi

    1975-08-01

    Full Text Available Exemplares de Biomphalaria tenagophila, originários de Londrina, mostraram-se resistentes à infecção por cepa simpátrica de Schistosoma mansoni e por cepa originária de Belo Horizonte (MG. Variando-se o diâmetro e a idade dos caramujos submetidos à infecção e aumentando-se o número de miracidios a que cada caramujo foi exposto, não se conseguiu obter cercárias de S. mansoni, 70 dias após a tentativa de infecção.Strains of Biomphalaria tenagophila from Londrina showed complete resistence to infection with Schistosoma mansoni, when the snails were exposed to the sympatric strain of the trematode or to the strain from Belo Horizonte, Minas Gerais State. The resistence has been retained even when the diameter of the shell of the snails and the number of miracidia used to infect each snail, were altered.

  19. Bats: bird-eaters of feather-eaters? A contribution to debate on great noctule carnivory

    Directory of Open Access Journals (Sweden)

    Gianna Dondini

    2005-01-01

    Full Text Available Riassunto Chirotteri ornitofagi o mangiatori di penne? Un contributo al dibattito sulla carnivoria della nottola gigante In un recente dibattito sulla carnivoria nella nottola gigante Nyctalus lasiopterus (Schreber, 1780 sono stati sollevati alcuni dubbi sulla possibilità di cattura di piccoli passeriformi. Alcuni autori ipotizzano che la nottola gigante sia condannata, dalla bassa risoluzione del suo impulso ultrasonoro, a catturare erroneamente penne fluttuanti nell'aria. Il presente contributo vuole evidenziare come la specie risulti predare effettivamente piccoli uccelli sebbene occorra approfondire molti degli aspetti legati alla sua ecologia trofica e predatoria.

  20. Standing on the shoulders of giants: production concepts versus production applications. The Hitachi Tool Engineering example Sobre ombros de gigantes: conceitos de produção versus aplicações na produção. O exemplo da Hitachi Tool Engineering

    OpenAIRE

    Goldratt,Eliyahu M.

    2009-01-01

    This article analyzes the methodologies of Henry Ford, Taiichi Ohno, and Eliyahu Goldratt and presents explicitly the four principles of flow management according to these operations management philosophies. The differences among them are related to different instances of the same principles in different environments: Ford in his industry focusing on mass production of few (or one) products, Ohno at Toyota with the Toyota production System (TPS), and Goldratt in a wide range of production env...