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Sample records for superior palpebral conjunctiva

  1. Transmissible venereal tumor in the palpebral conjunctiva of a dog: case reportTumor venéreo transmissível na conjuntiva palpebral de um cão – relato de caso

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    Luciane de Albuquerque

    2011-08-01

    Full Text Available The transmissible venereal tumor (TVT is a contagious neoplasm that occurs in sexually mature dogs, usually transmitted by coitus. This tumor normally affects the genital mucosa and is rarely found in any other part of the body. A case of transmissible venereal tumor in the palpebral conjunctiva of a 3-year old, crossbreed, male dog with a history of an abnormal mass in the right eye was presented. Ophthalmic examination revealed a mass originated from the lower eyelid conjunctiva of the right eye. No other ocular abnormalities were detected. Cytological examination was carried out and the diagnosis was TVT. The dog was treated with lyophilized vincristine sulphate intravenously, once a week, for four weeks. Despite the atypical clinical presentation, the response to chemotherapy with vincristine was excellent leading to complete regression of the neoplasm and no relapse after a year.O tumor venéreo transmissível (TVT é uma neoplasia contagiosa que ocorre em cães sexualmente maduros, sendo geralmente transmitido pelo coito. A neoplasia normalmente afeta a mucosa genital e é raramente encontrada em outras partes do corpo. Apresentamos um caso de tumor venéreo transmissível na conjuntiva palpebral de um cão macho, sem raça definida, com três anos de idade e histórico de presença de uma massa na conjuntiva palpebral inferior do olho direito. Não foram detectadas outras alterações oculares. O diagnóstico citológico da massa foi TVT. O cão foi tratado com sulfato de vincristina por via intravenosa, uma vez por semana, durante quatro semanas. Embora a apresentação do caso seja atípica, a resposta à quimioterapia foi excelente, levando a regressão completa da neoplasia, sem recorrência após um ano.

  2. Palpebral redundancy from hypothyroidism.

    Science.gov (United States)

    Wortsman, J; Wavak, P

    1980-01-01

    A patient is described with disabling palpebral edema. Primary hypothyroidism had been previously diagnosed and treated. Testing of thyroid function revealed persistence of the hypothyroidism. Treatment with L-thyroxine produced normalization of the biochemical parameters and resolution of palpebral edema. The search for hypothyrodism in patients with palpebral redundancy is emphasized.

  3. Criptococose palpebral: relato de caso Palpebral cryptococcosis: case report

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    Murilo Barreto Souza

    2006-04-01

    Full Text Available Relata-se o caso de uma paciente portadora de síndrome da imunodeficiência adquirida empiricamente tratada com esquema tríplice para tuberculose miliar. Durante a evolução clínica a paciente cursou com lesões comprometendo a pálpebra e conjuntiva tarsal à direita. A hipótese diagnóstica inicial foi de tuberculose ocular com comprometimento conjuntival e palpebral. A biópsia da lesão conjuntival mostrou presença do Criptococcus neoformans. Após o início do tratamento específico com anfotericina B, a paciente apresentou melhora das lesões cutâneas.This paper is about a patient with acquired immunodeficiency syndrome empirically treated for miliary tuberculosis. During the clinical evolution the patient presented lesions compromising the right eyelid and tarsal conjunctiva. The initial diagnostic hypothesis was ocular tuberculosis with conjunctival and eyelid involvement. The biopsy of the conjuctival lesion identified an encapsulated yeast-like fungus: Criptococcus neoformans. After starting treatment with B anfotericin, the cutaneus lesions cleared.

  4. Efeito da facectomia no posicionamento palpebral superior: comparação entre as técnicas de facoemulsificação e a extracapsular Changes in the position of the upper eyelid after cataract surgery: a comparison between phacoemulsification and extracapsular techniques

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    Roberto Pinto Coelho

    2003-10-01

    Full Text Available OBJETIVO: Comparar o efeito de duas técnicas de facectomia (facoemulsificação e extracapsular no posicionamento da pálpebra superior. MÉTODOS: Foi analisado o posicionamento palpebral de dois grupos de pacientes submetidos à cirurgia de catarata: facoemulsificação e extracapsular. As imagens foram digitalizadas (antes e 30 dias após a cirurgia e processadas com o programa NIH 1.62. O posicionamento palpebral foi medido em relação a uma linha horizontal que unia os cantos medial e lateral da fenda palpebral, passando pelo centro da pupila. RESULTADOS: O posicionamento palpebral foi afetado de maneira diferente segundo a técnica utilizada. Na facoemulsificação a diferença média entre a posição palpebral superior pós e pré-operatória foi de -0,54 mm. Na extracapsular esta diferença aumentou para -1,41 mm. O teste t de Student (amostras pareadas mostrou que as médias das diferenças entre os dois grupos são significativamente diferentes (p=0,0068. CONCLUSÃO: A técnica de cirurgia de facoemulsificação induziu menor variação do posicionamento palpebral em relação à cirurgia extracapsular no pós-operatório recente.PURPOSE: To compare changes in the upper eyelid position after cataract surgery with phacoemulsification and extracapsular techniques. METHODS: The upper eyelid position was measured in two groups of patients before and 30 days after cataract surgery performed with phacoemulsification and extracapsular techniques. Palpebral fissure images (before and after the cataract surgery were digitized and then processed using the NIH 1.62 software. Eyelid position was measured relative to a horizontal line passing through the pupil center and connecting both canthi of the palpebral fissure. RESULTS: The palpebral position was differently affected according to the techniques. In phacoemulsification the mean difference between eyelids position before and after surgery was -0.54 mm. In the extracapsular technique this

  5. [Palpebral cryptococcosis: case report].

    Science.gov (United States)

    Souza, Murilo Barreto; Melo, Carlos Sergio Nascimento; Silva, Cristiana Silveira; Santo, Ruth Miyuki; Matayoshi, Suzana

    2006-01-01

    This paper is about a patient with acquired immunodeficiency syndrome empirically treated for miliary tuberculosis. During the clinical evolution the patient presented lesions compromising the right eyelid and tarsal conjunctiva. The initial diagnostic hypothesis was ocular tuberculosis with conjunctival and eyelid involvement. The biopsy of the conjunctival lesion identified an encapsulated yeast-like fungus: Criptococcus neoformans. After starting treatment with B anfotericin, the cutaneus lesions cleared.

  6. Ptose palpebral: avaliação do posicionamento palpebral por imagens digitais

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    Taisa Bertocco Carregal

    2012-02-01

    Full Text Available OBJETIVO: Avaliar a posição palpebral de portadores de ptose congênita e adquirida, procurando identificar diferenças entre elas. MÉTODOS: Foi realizada avaliação retrospectiva de portadores de ptose palpebral atendidos no Ambulatório de Plástica Ocular da Faculdade de Medicina de Botucatu-UNESP, no período de 1995 a 2006, com dados recuperados de fichas de atendimento e de arquivo de imagens digitais. Foram avaliados dados de 87 pacientes, como idade, sexo e dados relativos à ptose. As ptoses foram separadas em dois grandes grupos: congênita e adquirida. Foram realizadas medidas digitais da distância margem-reflexo (DMR, distância margem-sulco palpebral superior (DMSC e distância margem supercílio (DMSP. A unidade de medida considerada foi o diâmetro corneano de cada um dos indivíduos. Todos os dados foram transferidos para tabela Excel e receberam análise estatística. RESULTADOS: A análise mostrou que não existe associação entre a presença de ptose e sexo, assim como tipo de ptose e sexo. Houve diferença significativa entre pálpebras com ptose e sem ptose para DMR. A DMR não apresentou diferença significativa nas ptoses congênita ou adquirida. No que tange a DMSP e DMSC, a ptose adquirida possui valores superiores aos obtidos para portadores de ptose congênita. CONCLUSÃO: A avaliação do posicionamento palpebral confirmou que a DMR é menor nos portadores de ptose palpebral e que as ptoses congênitas e adquiridas possuem DMR semelhantes. A DMSC e a DMSP apresentam valores superiores em portadores de ptose adquirida.

  7. Palpebral cryptococcosis: case report

    OpenAIRE

    Souza, Murilo Barreto; Melo, Carlos Sergio Nascimento; Silva, Cristiana Silveira; Santo, Ruth Miyuki; Matayoshi, Suzana

    2006-01-01

    Relata-se o caso de uma paciente portadora de síndrome da imunodeficiência adquirida empiricamente tratada com esquema tríplice para tuberculose miliar. Durante a evolução clínica a paciente cursou com lesões comprometendo a pálpebra e conjuntiva tarsal à direita. A hipótese diagnóstica inicial foi de tuberculose ocular com comprometimento conjuntival e palpebral. A biópsia da lesão conjuntival mostrou presença do Criptococcus neoformans. Após o início do tratamento específico com anfotericin...

  8. Ptose palpebral causada por Paquidermoperiostose

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    Patricia Regina de Pinho Tavares

    2014-08-01

    Full Text Available A paquidermoperiostose é uma síndrome caracterizada por acometimento cutâneo e ósseo, e em alguns casos ocorre comprometimento palpebral leve. É uma síndrome rara, idiopática ou hereditária, com provável herança autossômica dominante de penetrância variável. Descreve-se o caso de um paciente com ptose grave por paquidermoperiostose elucidando sua fisiopatologia e conduta cirúrgica aplicada.

  9. Criptococose palpebral: relato de caso

    OpenAIRE

    Souza,Murilo Barreto; Melo,Carlos Sergio Nascimento; Silva,Cristiana Silveira; Santo,Ruth Miyuki; Matayoshi,Suzana

    2006-01-01

    Relata-se o caso de uma paciente portadora de síndrome da imunodeficiência adquirida empiricamente tratada com esquema tríplice para tuberculose miliar. Durante a evolução clínica a paciente cursou com lesões comprometendo a pálpebra e conjuntiva tarsal à direita. A hipótese diagnóstica inicial foi de tuberculose ocular com comprometimento conjuntival e palpebral. A biópsia da lesão conjuntival mostrou presença do Criptococcus neoformans. Após o início do tratamento específico com anfotericin...

  10. Diminuição da função do músculo levantador da pálpebra superior em pacientes submetidos à cirurgia de ptose palpebral involucional e dermatocálase Decrease of upper eyelid levator muscle function after involutional ptosis and dermatochalasis surgery

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    Eliana Forno

    2008-12-01

    Full Text Available OBJETIVO: Avaliar a diferença da função do músculo levantador da pálpebra superior (FMLPS, distância margem reflexo (DMR1 e altura do sulco palpebral (AS antes e depois da cirurgia de blefaroplastia superior associada à correção de ptose palpebral. MÉTODOS: Quarenta e quatro pacientes com blefaroptose e dermatocálase foram incluídos. Intervenção: exploração do tendão do músculo levantador da pálpebra superior (MLPS durante a blefaroplastia, em portadores de blefaroptose e dermatocálase. Nos casos de desinserção, o tendão foi refixado ao tarso. Desfechos analisados: foram analisados de forma bilateral a diferença entre FMLPS, DMR1 e AS antes e depois da intervenção. A dependência entre os olhos foi corrigida por meio de equações de estimativa generalizada. Foi utilizada a correlação de Pearson para quantificar a dependência entre os olhos para FMLPS, DMR1 e AS. RESULTADOS: Houve diferença significante entre as medidas de FMLPS antes e depois da cirurgia, havendo redução da excursão do MLPS após a cirurgia, diminuindo, em média, 1,1 mm (P0,01. CONCLUSÃO: A função do músculo levantador da pálpebra superior diminui após a cirurgia para a correção da ptose.PURPOSE: To evaluate the differences between upper eyelid levator muscle function (UELMF, margin reflex distance (MDR1, and eyelid crease height (ECH before and after ptosis and dermatochalasis surgery. METHODS: Forty-four patients with blepharoptosis and dermatochalasis were enrolled. Intervention: An exploration of the levator tendon (LT during a blepharoplasty procedure in patients with blepharoptosis and dermatochalasis and in case of its disinsertion, the tendon was reattached to the tarsus. Measured outcome: The differences between UELMF, MDR1, ECH before and after surgery were evaluated bilaterally. Dependency between both eyes was corrected by generalized estimating equations. Pearson correlation was used to evaluate the dependency of the two

  11. Absence of lateral palpebral raphe in Caucasians

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    Lucy Goold

    2009-07-01

    Full Text Available Lucy Goold1, Hirohiko Kakizaki1,2,3, Raman Malhotra3, Dinesh Selva11South Australian Institute of Ophthalmology and Discipline of Ophthalmology and Visual Sciences, University of Adelaide, Australia; 2Department of Ophthalmology, Aichi Medical University, Nagakute, Aichi, Japan; 3Corneoplastic Unit and Eye Bank, Queen Victoria Hospital NHS Trust, East Grinstead, West Sussex, United KingdomAbstract: Classical anatomical teaching reports the presence of the lateral palpebral raphe formed at the union in the preseptal and orbital parts of the orbicularis oculi muscle, or by the tendon adhering these to the underlying zygomatic bone. The lateral palpebral raphe has been shown to be absent in Asian cadavers. The current study uses both evidence from the anatomical dissection of five eyelids from three Caucasian cadavers, and histological assessment of the lateral canthus of 13 eyelids from seven Caucasian cadavers to illustrate the absence of the lateral palpebral raphe in Caucasian population.Keywords: lateral palpebral raphe, orbicularis oculi muscle, Caucasian, cadavers

  12. Rhinosporidiosis of the tarsal conjunctiva

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    Akshay Gopinathan Nair

    2015-01-01

    Full Text Available Rhinosporidiosis is a rare infection caused by Rhinosporidium seeberi, an organism classified in its own class, mesomycetozoea. It commonly affects mucus membranes namely the nasal mucosa, pharynx and the conjunctiva. We present the case of an 8-year-old female who presented with a flat, red, vascular, fleshy, pedunculated mass arising from the tarsal conjunctiva of the right upper eyelid. The mass was completely excised. On histopathological examination, multiple sporangia were seen in various stages of degeneration, consistent with rhinosporidiosis. The diagnosis of rhinosporidiosis is based solely on its microscopic features, and the treatment is surgical excision. This condition is endemic in the temperate regions of the Indian subcontinent, but it has been known to occur even in the colder regions of North America and Eastern Europe. Although a rare clinical entity, the possibility of rhinosporidiosis must be borne in mind when evaluating any polypoidal conjunctival mass.

  13. Palpebral myiasis in a Danish traveler caused by the human bot-fly (Dermatobia hominis)

    DEFF Research Database (Denmark)

    Bangsgaard, Regitze; Holst, Bengt; Krogh, Erik

    2000-01-01

    ophthalmology, dermatobia hominis, human bot-fly, palpebral myiasis, parasite infection, myiasis......ophthalmology, dermatobia hominis, human bot-fly, palpebral myiasis, parasite infection, myiasis...

  14. Malignant lymphoma of the conjunctiva

    DEFF Research Database (Denmark)

    Kirkegaard, Marina M.; Coupland, Sarah E.; Prause, Jan U.

    2015-01-01

    Conjunctival lymphomas constitute 25% of all ocular adnexal lymphomas. The majority are B-cell non-Hodgkin lymphomas (NHLs) (98%), whereas conjunctival T-cell NHLs are rare (2%). The most frequent subtype of conjunctival B-cell lymphoma is extranodal marginal zone lymphoma (EMZL; 81%), followed...... by follicular lymphoma (8%), diffuse large B-cell lymphoma (3%), and mantle cell lymphoma (3%). Extranodal marginal zone lymphoma occurs slightly more often in women and, along with follicular lymphoma, presents late in the seventh decade of life, whereas diffuse large B-cell lymphoma and especially mantle cell...... lymphoma have a predilection for the male gender and typically present in the eighth decade. Extranodal marginal zone lymphoma and follicular lymphoma present most frequently in the forniceal and bulbar conjunctiva. Conjunctival diffuse large B-cell lymphoma, mantle cell lymphoma and T-cell NHLs...

  15. Expression profiles of aquaporins in rat conjunctiva, cornea, lacrimal gland and Meibomian gland.

    Science.gov (United States)

    Yu, Dongfang; Thelin, William R; Randell, Scott H; Boucher, Richard C

    2012-10-01

    The aim of the study was to elucidate aquaporin (AQP) family member mRNA expression and protein expression/localization in the rat lacrimal functional unit. The mRNA expression of all rat AQPs (AQP0-9, 11-12) in palpebral, fornical, and bulbar conjunctiva, cornea, lacrimal gland, and Meibomian gland was measured by Reverse Transcriptase-Polymerase Chain Reaction (RT-PCR) and real time RT-PCR. Antibodies against AQP1, 3, 4, 5, 9, and 11 were used in Western blotting and immunohistochemistry to determine protein expression and distribution. Our study demonstrated characteristic AQP expression profiles in rat ocular tissues. AQP1, 3, 4, 5, 8, 9, 11, and 12 mRNA were detected in conjunctiva. AQP0, 1, 2, 3, 4, 5, 6, 11, and 12 mRNA were expressed in cornea. AQP0, 1, 2, 3, 4, 5, 7, 8, and 11 mRNA were detected in lacrimal gland. AQP1, 3, 4, 5, 7, 8, 9, 11, and 12 mRNA were identified in Meibomian gland. By Western blot, AQP1, 3, 5, and 11 were detected in conjunctiva; AQP1, 3, 5, and 11 were identified in cornea; AQP1, 3, 4, 5, and 11 were detected in lacrimal gland; and AQP1, 3, 4, 5, 9, and 11 were present in Meibomian gland. Immunohistochemistry localized AQPs to distinct sites in the various tissues. This study rigorously analyzed AQPs expression and localization in rat conjunctiva, cornea, lacrimal gland, and Meibomian gland tissues. Our findings provide a comprehensive platform for further investigation into the physiological or pathophysiological relevance of AQPs in ocular surface. Copyright © 2012 Elsevier Ltd. All rights reserved.

  16. [Lupus erythematosus panniculitis presenting as palpebral edema and parotiditis].

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    Pérez-Pastor, G; Valcuende, F; Tomás, G; Moreno, M

    2007-10-01

    Lupus erythematosus panniculitis or lupus erythematosus profundus is characterized by inflammation of the deep dermis and subcutaneous tissue. It can occur in isolation or associated with chronic systemic or discoid lupus erythematosus. It usually consists of nodules and hardened subcutaneous plaques on the forehead, cheeks, proximal extremities, and buttocks. Periorbital and parotid involvement are rare and can lead to misdiagnosis. We present the case of a patient with lupus erythematosus panniculitis who presented with palpebral edema and involvement of the periocular fat and parotid gland.

  17. Computed tomography of post-traumatic orbito-palpebral emphysema

    International Nuclear Information System (INIS)

    Nose, Harumi; Kohno, Keiko

    1981-01-01

    Two cases of orbito-palpebral emphysema are described. Both having a history of recent facial trauma, emphysema occurred after blowing the nose. They were studied by computed tomography and plain x-ray film, including tomograms of the orbit. The emphysema was revealed by computed tomography and x-ray film, but more clearly by the former technique. The fracture lines of the orbit were revealed in only one case by x-ray film, but in both cases by computed tomography. The authors stress that computed tomography is the best technique for the study of orbital emphysema. (author)

  18. In vivo confocal microscopy of conjunctiva-associated lymphoid tissue in healthy humans.

    Science.gov (United States)

    Agnifili, Luca; Mastropasqua, Rodolfo; Fasanella, Vincenzo; Di Staso, Silvio; Mastropasqua, Alessandra; Brescia, Lorenza; Mastropasqua, Leonardo

    2014-07-29

    To investigate modifications with aging of the presence, distribution and morphologic features of conjunctiva-associated lymphoid tissue (CALT) in healthy human subjects using laser scanning in vivo confocal microscopy (IVCM). A total of 108 (age range, 17-75 years) subjects were enrolled. In vivo confocal microscopy of the tarsal and bulbar conjunctiva, and impression cytology (IC) with CD3 (intra-epithelial T-lymphocytes) and CD20 (intra-epithelial B-lymphocytes) antibody immunofluorescence staining were performed. The main outcomes were subepithelial lymphocyte density (LyD), follicular density (FD), and follicular area (FA). The secondary outcomes were follicular reflectivity (FR), and lymphocyte density (FLyD), and CD3 and CD20 positivity. Conjunctiva-associated lymphoid tissue was observed in all subjects (97% only superior and 3% in both superior and inferior tarsum). Lymphocyte density ranged from 7.8 to 165.8 cells/mm(2) (46.42 [18.37]; mean [SD]), FD from 0.5 to 19.4 follicles/mm(2) (5.3 [3.6]), and FA from 1110 to 96,280 mm(2) (26,440 [26,280]). All three parameters showed a highly significant inverse cubic relationship with age (P lymphoid structures. These modifications may account for the decrease of mucosal immune response and increase of ocular surface diseases in the elderly. Copyright 2014 The Association for Research in Vision and Ophthalmology, Inc.

  19. Repair of DNA in xeroderma pigmentosum conjunctiva

    International Nuclear Information System (INIS)

    Newsome, D.A.; Kraemer, K.H.; Robbins, J.H.

    1975-01-01

    Xeroderma pigmentosum (XP) is an autosomal recessive disease with tumor formation on sun-exposed areas of the skin and eyes. Cells from most XP patients are deficient in repairing DNA damaged by ultraviolet (uv) light as shown by a reduced rate of tritiated thymidine (3HTdR) incorporation during their DNA repair synthesis. We have studied such repair synthesis in conjunctival cells from an XP patient with a conjunctival epithelioma and from normal cadaver conjunctiva. Cultured conjunctival cells were irradiated with uv light and then incubated with 3HTdR. Autoradiograms were prepared and showed that uv radiation induced a considerably slower rate of DNA repair synthesis in the XP cells than in normal cells. Many of the ocular abnormalities of XP, including tumor formation, may be the result of this defective DNA repair process

  20. Bacterial flora of conjunctiva after death

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    Sagili Chandrasekhara Reddy

    2013-10-01

    Full Text Available AIM:To evaluate the frequency of bacterial flora of conjunctiva after death (cadaver eyes which will give information about the bacterial contamination of donor eyes, and the in-vitro sensitivity of isolated bacteria to the commonly used antibiotics in ophthalmic practice.METHODS: Conjunctival swabs were taken from the cadavers (motor vehicle accident deaths and patients who died in the hospital, within 6h after death, and sent for culture and sensitivity test. Conjunctival swabs, taken from the healthy conjunctiva of patients admitted for cataract surgery, were sent for culture and sensitivity as controls (eyes in those of living status. The bacterial isolates were tested against the commonly used antibiotics (chloramphenicol, gentamicin, ciprofloxacin in ophthalmology practice.RESULTS: Bacteria were isolated in 41 out of 100 conjunctival swabs (41%, taken from 50 cadavers (study group. Coagulase negative staphylococcus was the most common bacteria isolated (15%, followed by pseudomonas aeruginosa (5%. Gentamicin was effective against majority of the bacterial isolates (82%. Bacteria were isolated from 7 out of 100 conjunctival swabs taken as control group (eyes in living state. Coagulase negative staphylococcus was the most common organism (5% isolated in control group; the others were staphylococcus aureus (1% and beta hemolyticus streptococci (1%.CONCLUSION: Bacteria were isolated from 41% of the cadaver eyes. High percentage sensitivity of the bacterial isolates to gentamicin (82% supports the practice of thorough irrigation of the eyes with gentamicin solution before starting the procedure of enucleation followed by immersion of the enucleated eyeballs in gentamycin solution, to prevent the bacterial contamination.

  1. Bacillus Spp. isolated from the conjunctiva and their potential ...

    African Journals Online (AJOL)

    2014-06-02

    Jun 2, 2014 ... Introduction. Application of antibiotics in the treatment of bacterial ... Keywords: Bacillus spp, antibacterial activity, eyes pathogens, conjunctiva. African Health ... ml of respective test organism and allowed to dry. In the agar ...

  2. Reconstrução palpebral com retalho de Fricke: relato de dois casos

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    Herzog Neto Guilherme

    2006-01-01

    Full Text Available O câncer de pele é o tumor mais comum na espécie humana, sendo o carcinoma basocelular o de maior prevalência. Este trabalho relata dois casos recentes deste tipo de tumor, envolvendo tanto a pálpebra superior quanto a inferior em duas mulheres. O primeiro caso é de uma mulher de 72 anos de idade, amaurótica do olho direito, com comprometimento de aproximadamente 80% da pálpebra superior esquerda, 70% da pálpebra inferior esquerda e comprometimento da parede lateral da órbita, comprovado pela tomografia computadorizada. O exame anatomopatológico da peça cirúrgica revelou a presença de carcinoma basocelular invasivo, com margens livres. Foi feita reconstrução imediata com retalho de Fricke. O segundo caso é de senhora de 68 anos de idade, com história prévia de trauma na região periorbitária esquerda, apresentando edema e hiperemia palpebral, com aspecto brilhante, com perda dos cílios e pequena ulceração central, envolvendo aproximadamente 90% da pálpebra superior e 65% da pálpebra inferior esquerda, com comprometimento da parede lateral da órbita evidenciado na tomografia. O exame anatomopatológico da peça cirúrgica revelou a presença de carcinoma basocelular invasivo, com margens livres. Foi optado pela reconstrução imediata com retalho de Fricke. Os autores acreditam que apesar deste tipo de retalho não ser a primeira escolha na maioria das reconstruções palpebrais, não deveria ser negligenciado, pois em certos casos, tornar-se-ia a única opção viável.

  3. Reanimación palpebral con colgajo frontal miofuncional: Caso clínico

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    F. García-García

    2014-06-01

    Full Text Available El párpado es una estructura crítica para la protección y función del globo ocular, y parte primordial en la estética facial. Su reconstrucción está determinada por la extensión de la lesión y el compromiso de las diferentes capas. Siempre se preferirán tejidos loco-regionales debido a su mayor similitud y disposición. Los métodos de reanimación palpebral se pueden dividir en estáticos y dinámicos, considerando a estos últimos como el único medio para restaurar el parpadeo. Presentamos un caso de celulitis orbitaria preseptal con lesión de espesor total del párpado superior y su reconstrucción miofuncional utilizando un colgajo frontal. Este colgajo frontal miocutáneo logró la restauración funcional del párpado comprometido mediante la adición de fibras musculares y permitiendo el fenómeno de reinervación.

  4. Characterization of serotonergic receptors in rabbit, porcine and human conjunctivae.

    Science.gov (United States)

    Turner, Helen C; Alvarez, Lawrence J; Candia, Oscar A; Bernstein, Audrey M

    2003-10-01

    To characterize the serotonin (5-HT) receptors linked to the modulation of adenylyl cyclase activity in rabbit, porcine and human conjunctivae. Serotonin receptor-subtype expression was examined using reverse transcription-polymerase chain reaction (RT-PCR) and receptor subtype-specific polyclonal antibodies for the immunofluorescent labeling of conjunctival cryosections. In addition, measurements of the effects of serotonergics on the short-circuit current (I(sc)) across rabbit and porcine conjunctivae were contrasted. RT-PCR assays indicated the expression of 5-HT(1B ) and 5-HT(1D) receptors, subtypes negatively coupled to adenylyl cyclase, in the rabbit conjunctiva. This approach also suggested the co-expression of 5-HT(1B), 5-HT(1D), 5-HT(1F), 5-HT(4) and 5-HT(7) mRNA's in the porcine conjunctiva, and 5-HT( 1D), 5-HT(1F) and 5-HT(7) in the human conjunctiva. Since the 5-HT(4) and 5-HT(7) receptors are positively linked to adenylyl cyclase, these results implied that the porcine and human tissues exhibited subtypes both positively and negatively linked to the enzyme. However, immunohistochemical observations, using currently available antibodies solely localized the 5-HT(7) moiety in the porcine and human epithelia, suggested that the 1B/1D forms may be minor elements. Consistent with this prospect, 5-HT was a stimulant of the transepithelial I(sc) across the porcine conjunctiva, an opposite response from earlier findings that demonstrated inhibitory effects by 5-HT on the rabbit I(sc), which are now explained by the localization of the 1B/1D receptors in the rabbit stratified epithelium. The 5-HT receptors expressed by mammalian conjunctivae are not identical. In terms of 5-HT receptor expression, the porcine tissue may be a more appropriate model for human, than is the rabbit, in that 5-HT may serve as a secretagogue in the human epithelium.

  5. Annular elastolytic giant cell granuloma of conjunctiva: A case report

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    Karabi Konar

    2014-01-01

    Full Text Available Annular elastolytic giant cell granuloma is a condition characterized histologically by damaged elastic fibers associated with preponderance of giant cells along with absence of necrobiosis, lipid, mucin, and pallisading granuloma. It usually occurs on sun-damaged skin and hence the previous name actinic granuloma. A similar process occurs on the conjunctiva. Over the past three decades only four cases of conjunctival actinic granuloma have been documented. All the previous patients were females with lesions in nasal or temporal bulbar conjunctiva varying 2-3 mm in size. We report a male patient aged 70 years presenting with a 14 mm × 7 mm fleshy mass on right lower bulbar conjunctiva. Clinical differential diagnoses were lymphoma, squamous cell carcinoma in situ and amyloidosis. Surgical excision followed by histopathology confirmed it to be a case of actinic granuloma. This is the first case of isolated conjunctival actinic granuloma of such a large size reported from India.

  6. Estudo do raspado de conjuntiva e margem palpebral de pacientes tratados de retinoblastoma: etapa I - Microflora aeróbica Study of the conjunctival scrape and eyelid margin smears in patients treated for retinoblastoma: phase I - Aerobic microflora

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    Maria Carmen Menezes Santos

    2002-03-01

    Full Text Available Objetivo: A queixa de secreção ocular é muito freqüente entre os pacientes tratados de retinoblastoma submetidos à enucleação e radioterapia. A falta de dados sobre a microflora em pacientes nessas condições foi o que motivou este estudo. Métodos: Foram examinadas 114 órbitas de 58 pacientes. Este trabalho apresenta os resultados das culturas para bactérias aeróbicas e fungos, de conjuntiva e margem palpebral em 4 condições, com e sem enucleação, com e sem radioterapia. Procedeu-se à identificação dos microrganismos de acordo com o Protocolo do National Committee for Clinical Laboratory Standards e os esfregaços para citologia foram submetidos às colorações de Gram e Leishman. Resultados: A presença de microrganismos foi mais freqüente nas cavidades anoftálmicas irradiadas, tanto na conjuntiva (54,5% quanto na margem palpebral (63,6%, porém sem diferença estatisticamente significante. Além disso, em órbitas com bulbo ocular, a radiação, na fase tardia, representou um fator limitante da presença de microrganismos na conjuntiva e na margem palpebral, mas sem diferença estatisticamente significante. O Staphylococcus coagulase negativa foi o microrganismo mais freqüente na conjuntiva e margem palpebral de todos os grupos. Houve crescimento de fungo, Candida tropicalis, em apenas um caso. Conclusões: Sugere-se o uso de colírios antibióticos em pacientes tratados de retinoblastoma, portadores de cavidade anoftálmica, irradiada ou não.Purpose: Conjunctival discharge is a common complaint among patients treated for retinoblastoma who underwent enucleation and radiotherapy. Lack of data about the microflora in those patients motivated this study. Methods: One hundred and fourteen orbits of 58 patients were examined. The authors present the results of aerobic bacterial and fungal culture of conjunctival and eyelid margin smears, as well as conjunctival cytology, in 4 different conditions: with and without

  7. Estudo comparativo das medidas manual e digital da fenda palpebral A comparative study of the manual and digital measurements of the palpebral fissure

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    Tânia Pereira Nunes

    2005-12-01

    Full Text Available OBJETIVO: Comparar a medida manual do comprimento vertical da fenda palpebral e sua medida obtida por meio de processamento computadorizado de imagens de indivíduos sem alterações palpebrais. MÉTODOS: Foram analisadas 102 fendas palpebrais de 51 indivíduos normais. A faixa etária variou entre 17 e 84 anos, sendo 25 (49% do sexo masculino e 26 (51% do sexo feminino. RESULTADOS: Não houve diferença estatisticamente significativa entre as medidas manuais da fenda palpebral e as obtidas por meio de processamento computadorizado de imagens. Também não se observou diferença entre ambos os sexos e a faixa etária. CONCLUSÕES: Os resultados obtidos com estes dois métodos podem ser comparados entre si devida à equivalência estatística das medidas.PURPOSE: To compare the measurement of the palpebral fissure done either manually and by computer analysis of image of individuals without lid alterations. METHODS: One hundred two palpebral fissures from 51 normal subjects have been analyzed. The patients' age ranged from 17 to 84 years, with 25 (49% males and 26 (51% females. RESULTS: There was no statistically significant difference between the measurements done either manually or by computer analysis of images, neither, when we grouped the patients by sex or age. Also we did not observe difference between males and females, and regarding age. CONCLUSIONS: The results obtained by both methods are comparable and reliable due to the statistical equivalence of the obtained measurements.

  8. Nevo palpebral dividido - "kissing nevus": relato clínico-patológico e tratamento cirúrgico de três casos Divided nevus of the eyelid - kissing nevus: clinicopathological report and surgical treatment of three cases

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    Eduardo Ferrari Marback

    2002-03-01

    Full Text Available Objetivo: Relatar aspectos clínico-patológicos e tratamento cirúrgico em três casos de nevo palpebral dividido -"kissing nevus". Métodos: Revisão dos prontuários de três pacientes portadores de nevo palpebral dividido. Análise dos aspectos clínico-patológicos, das técnicas cirúrgicas e resultados do tratamento. Resultados: A cura das lesões com bom resultado estético e funcional foi conseguida em todos os casos. Conclusões: A exérese do nevo palpebral dividido, em mais de um tempo cirúrgico utilizando deslizamento de retalhos cutâneos palpebrais e, em um caso, transplante de pele da pálpebra superior contralateral foi curativa nos três casos estudados.Purpose: To describe the clinical and pathological aspects, surgical treatment and results of three cases of divided nevus -"kissing nevus"- of the eyelid. Methods: Review of the clinicopathological data and surgical techniques used to treat these patients. Results: Cure of the lesions with good esthetic and functional results were obtained in all cases. Conclusions: Surgical excision of the divided nevus of the eyelid in more than one surgical session using flaps from the adjacent skin, and in one case, a free skin graft from the contralateral superior lid, was curative in the studied three cases.

  9. Squamous cell dysplasia and carcinoma of the conjunctiva

    DEFF Research Database (Denmark)

    Ramberg, Ingvild; Heegaard, Steffen; Prause, Jan Ulrik

    2015-01-01

    Purpose To investigate the epidemiology of squamous cell dysplasia and carcinoma of the conjunctiva in Denmark. Methods Review of the histopathological case reports at the Eye Pathology Institute (EPI), University of Copenhagen, and the National Danish Pathology Bank from 1980 to 2011. Information......%) had epithelial dysplasia, 19 (13%) had carcinoma in situ, and 29 (20%) had squamous cell carcinoma. A significantly higher proportion of men were found. The median age at diagnosis was 65 years. The risk of recurrence was 10.0% [95% confidence interval (CI): 5.0–15.0] after 1 year and 17.2% (95% CI......: 10.8–23.7) after 5 years. The lesions were most often localized to the corneal limbus. In our records, one patient had a lymph node metastasis and the disease necessitated enucleation in two patients. No patients had died from squamous cell carcinoma of the conjunctiva. Conclusion Overall, our data...

  10. Seborrheic Keratosis of the Conjunctiva: A Case Report

    Science.gov (United States)

    Kim, Ji Hyun; Bae, Hyoung Won; Lee, Kwang Kil; Kim, Tae Im

    2009-01-01

    Seborrheic keratosis is a benign epithelial neoplasia that occurs mainly in the skin of the eyelids and face. We describe a case of seborrheic keratosis of the conjunctiva confirmed by histopathology. A 72-year-old man presented with a recurrent conjunctival mass involving the nasal side of his right eye. Clinically, a diagnosis of conjunctival papilloma was made, and a mass excision was performed. The histopathological analysis evidenced a conjunctival-covering epithelium with papillomatous changes and irregular acanthosis, at the expense of a proliferation of basaloid cells. In addition, the lesion exhibited multiple pseudohorn cysts containing keratin. With the above findings, a diagnosis of conjunctival seborrheic keratosis was established. The occurrence of seborrheic keratosis on the conjunctiva is rare. In this case, seborrheic keratosis was confirmed by pathologic report despite its similar appearance with papilloma. Seborrheic keratosis should be considered in the differential diagnosis of conjunctival lesions. PMID:20046694

  11. Mucoepidermoid carcinoma of the conjunctiva with lung metastasis

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    Pukhraj Rishi

    2015-01-01

    Full Text Available A 36-year-old lady presented with redness and decreased vision in right eye since 6 months. She was earlier diagnosed of cavitary lung lesion, presumed secondary to tuberculosis and treated with anti-tubercular treatment for 4 months. Examination of affected right eye revealed nil light perception, conjunctival congestion with an exuberant mass in the inferotemporal bulbar conjunctiva, proptosis, iris neovascularization, 360° closed angles, intraocular pressure of 48 mm Hg, exudative retinal detachment, uveal mass and orbital extension. A diagnostic needle biopsy of uveal mass revealed malignant cells. Computed tomography-guided lung biopsy revealed squamous cell carcinoma (SCC, indicating metastatic spread from the orbit. She underwent lid-sparing exenteration of the right eye. Histopathological examination of the orbital tissue revealed mucoepidermoid carcinoma arising from the conjunctiva with extensive invasion into the orbital tissue, muscle fibers, sclera, choroid and optic nerve. Multiple tumor emboli were seen in the lumen of orbital blood vessels. In conclusion, mucoepidermoid carcinoma of the conjunctiva is a rare, aggressive variant of SCC. Early intervention is essential to prevent intraocular invasion and systemic metastasis.

  12. [Characterization of epithelial primary culture from human conjunctiva].

    Science.gov (United States)

    Rivas, L; Blázquez, A; Muñoz-Negrete, F J; López, S; Rebolleda, G; Domínguez, F; Pérez-Esteban, A

    2014-01-01

    To evaluate primary cultures from human conjunctiva supplemented with fetal bovine serum, autologous serum, and platelet-rich autologous serum, over human amniotic membrane and lens anterior capsules. One-hundred and forty-eight human conjunctiva explants were cultured in CnT50(®) supplemented with 1, 2.5, 5 and 10% fetal bovine serum, autologous serum and platelet-rich autologous serum. Conjunctival samples were incubated at 37°C, 5% CO2 and 95% HR, for 3 weeks. The typical phenotype corresponding to conjunctival epithelial cells was present in all primary cultures. Conjunctival cultures had MUC5AC-positive secretory cells, K19-positive conjunctival cells, and MUC4-positive non-secretory conjunctival cells, but were not corneal phenotype (cytokeratin K3-negative) and fibroblasts (CD90-negative). Conjunctiva epithelial progenitor cells were preserved in all cultures; thus, a cell culture in CnT50(®) supplemented with 1 to 5% autologous serum over human amniotic membrane can provide better information of epithelial cell differentiation for the conjunctival surface reconstruction. Copyright © 2013 Sociedad Española de Oftalmología. Published by Elsevier Espana. All rights reserved.

  13. Keratoacanthoma of the conjunctiva in a young patient.

    Science.gov (United States)

    Ozge, Gokhan; Uysal, Yusuf; Ceylan, Osman Melih; Onguru, Onder; Mutlu, Fatih Mehmet

    2016-01-01

    Keratoacanthomas rarely occur in the conjunctiva. We report a case of a 24-year-old man with a rapidly growing conjunctival mass. The tumor was excised with a safety margin to exclude squamous cell carcinoma and was histopathologically diagnosed as a keratoacanthoma. There has been no recurrence over 2 years of follow-up. To the best of our knowledge, he is the youngest patient to be diagnosed with conjunctival keratoacanthoma who had no known risk factors such as skin disorders, trauma, surgery, or infection. In similar cases, we recommend complete early surgical excision and careful follow-up to exclude malignancy.

  14. [Balloon cell nevi of the conjunctiva (author's transl)].

    Science.gov (United States)

    Schlageter, P E; Daicker, B

    1975-06-01

    The clinical and histological features of three cases of conjunctival balloon cell nevi are described. This peculiar form of nevus is very rare in the conjunctiva. The findings are compared with the descriptions in the literature of dermal balloon cell nevi. They demonstrate, that the conjunctival and dermal tumours are of idential histological structure. The proliferations of the conjunctival epithelium often found in conjunctival nevi do not modify the balloon cell nevi. These can not be diagnosed clinically. The problems of the pathogenesis of the balloon cell nevi are discussed.

  15. Ptose palpebral associada a paquidermoperiostose: relato de caso Eyelid ptosis associated with pachydermoperiostosis: case report

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    Ana Paula Ximenes Alves

    2005-06-01

    Full Text Available Descreve-se caso clínico de um indivíduo acometido por paquidermoperiostose, cuja queixa principal foi ptose palpebral bilateral. Trata-se de doença hereditária, autossômica dominante, que acomete a pele, os ossos e os tecidos moles, resultando em acentuada hipertrofia tarsal. Discute-se a fisiopatologia da ptose e o tratamento executado no caso.We describe a clinical case of a patient with pachydermoperiostosis and bilateral palpebral ptosis. It is a hereditary, dominant autosomic disease, which affects skin, bones and soft tissues. In the eyelid, it causes an important tarsal hypertrophy. We discuss the physiopathology and treatment of the ptosis.

  16. Ultrasound biomicroscopy as a tool for conjunctiva and eyelids evaluation

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    V. N. Trubilin

    2015-01-01

    Full Text Available Currently, ultrasound biomicroscopy (UBM is the only diagnostic method that uses a 50‑100 MHz transducer with a depth of penetration of 4 mm. This provides greater sensitivity and resolution.Aim. To visualize meibomian glands and to evaluate their morphological and functional status using UBM.Methods. UBM was performed in 14 patients aged 29‑81 with obvious meibomian gland dysfunction (MGD and healthy meibomian glands. 6 patients had no biomicroscopic signs of blepharitis while 8 patients had biomicroscopic signs of blepharitis, blepharoconjunctivitis, and MGD.Results. UBM provides detailed information on meibomian glands and eyelid margins and their pathological conditions, i.e., eyelid margin thickening due to inflammation, meibomian gland orifice obstruction, increase in distance between meibomian glands due to their atrophy, and cartilaginous tissue destruction. UBM findings may depend on patient age as well as on disease stage and severity. When re-positioning UBM transducer, bullous conjunctiva and subconjunctival cysts can be visualized. This provides differential diagnosis between opaque cysts and tumors.Conclusion. UBM combined with standard exams increases information value, reliability, and accuracy of the diagnostics of anterior segment disorders and facilitates the development of targeted therapeutic approaches. Further studies on diagnostic value of conjunctiva and eyelids UBM are required.

  17. A systematic assessment of goblet cell sampling of the bulbar conjunctiva by impression cytology.

    Science.gov (United States)

    Doughty, Michael J

    2015-07-01

    The purpose of this study was to assess the apparent goblet cell density (GCD) from conjunctival impression cytology (CIC) samples in relation to the number of conjunctival cells collected onto the filters. CIC specimens were collected from the superior-temporal bulbar conjunctiva of 16 pigmented rabbits onto Biopore (Millicell-CM) membranes, fixed with buffered glutaraldehyde and stained with Giemsa. Different numbers of microscope fields of view in each of the specimens were imaged by light microscopy using a 20× magnification objective lens (200× final magnification), and the goblet cells marked and counted. The GCD values/sq. mm were calculated. The same conjunctival region of 3 other rabbits was also prepared for transmission electron microscopy (TEM) by fixation, in situ, with the same buffered glutaraldehyde. Mean values for GCD estimates were found to vary from 399 to 1576 cells/sq. mm, depending on the image sampling and analysis strategy chosen, with the lowest inter-sample variance of around 10% being found if a maximum goblet cell count was taken on substantially multilayered regions of the CIC specimens. Counts of the number of goblet cells per 1000 visible conjunctival epithelial cells yielded a value of close to 90 (range 36-151), with modest inter-sample variability of around 30%. A three or ten 200× microscope field and random sampling strategy yielded mean GCD values between 542 and 670 cells/sq. mm, but with very high intra- and inter-sample variance of at least 60% and sometimes higher than 100%. TEM confirmed the multilayered organization of the conjunctiva and the deeper lying goblet cells. The general use of a goblet cell count as an objective marker for conjunctival normality or health is likely to be highly variable unless a more specific strategy is adopted. Beyond providing details of exactly the counting strategy used, it would be very useful to provide full details of the actual microscope field size used as well as information on

  18. Nosocomial infections of ocular conjunctiva in newborns delivered by cesarian section.

    Science.gov (United States)

    Bezirtzoglou, E; Romond, C

    1991-01-01

    Colonization of the ocular conjunctiva in newborns delivered by cesarian section occurs usually within the first day of life. We have studied the flora of the ocular conjunctiva at birth, from 19 newborns delivered by cesarian section, coming from two different maternity hospitals. Ocular conjunctiva cultures yielded the main predominant flora in both maternity hospitals considered. The most common genus of this flora are: Staphylococcus, Corynebacterium and Propionibacterium acnes. Peptostreptococcus productus, Neisseria, Eubacterium and Clostridium perfringens are isolated occasionally. In newborns delivered by cesarian section, this flora principally acquired may be the consequence of the presence of bacteria in the ambient air, as well as differences in care provided by the nosocomial personnel.

  19. Corrección de ptosis palpebral por la incisión de blefaroplastia Upper eyelid ptosis treatment using blepharoplasty incision

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    A. Novo Torres

    2006-09-01

    Full Text Available Se entiende por blefaroptosis el nivel anormalmente bajo del párpado superior durante la mirada directa. Los mejores resultados se obtienen con las técnicas de resección o avance del músculo elevador o su aponeurosis, siempre que el elevador posea una función adecuada. Nuestra intención es presentar una modificación a la técnica de Blaskovics para la corrección de blefaroptosis moderadas, con buena función del elevador Presentamos una serie de 10 casos donde se utilizó una variante de la operación de Blaskovics de resección del elevador para la corrección quirúrgica de la ptosis palpebral. De los 10 casos, 7 fueron bilaterales y 3 unilaterales. En todos ellos la función del elevador se situaba entre 4 y 8 mm y el grado de ptosis fue mayor de 4 mm con disminución del campo visual en la mirada directa. La técnica quirúrgica incluyó un abordaje cutáneo mediante la incisión horizontal de Blefaroplastia superior, la exposición amplia del músculo elevador y su aponeurosis, respetando las bolsas grasas orbiculares y separándolo de la conjuntiva palpebral. En todos los casos se obtuvo corrección de las ptosis. El grado de asimetría fue inferior a 0,3 cm. Un caso presentó en el postoperatorio inmediato dehiscencia de la sutura en su lado medial y tuvo que ser reintervenido a los 10 días. El edema palpebral postoperatorio se resolvió a partir del 2º día postoperatorio desapareciendo hacia el día 8º y permitiendo una valoración fiable en dicha fecha. El grado de satisfacción de los paciente fue bueno o muy bueno y el campo visual fue completo en todos los pacientes Las técnicas clásicas y sus modificaciones para la corrección de los casos de ptosis siguen teniendo validez. Con esta modificación que respeta la conjuntiva palpebral ocular se evita añadir morbilidad al proceso quirúrgico. Pensamos que la integridad de la conjuntiva redunda en un mayor confort postoperatorio al paciente, disminuye el edema conjuntival

  20. Bacterial Flora Changes in Conjunctiva of Rats with Streptozotocin-Induced Type I Diabetes.

    Science.gov (United States)

    Yang, Chao; Fei, Yuda; Qin, Yali; Luo, Dan; Yang, Shufei; Kou, Xinyun; Zi, Yingxin; Deng, Tingting; Jin, Ming

    2015-01-01

    The microbiota of both humans and animals plays an important role in their health and the development of disease. Therefore, the bacterial flora of the conjunctiva may also be associated with some diseases. However, there are no reports on the alteration of bacterial flora in conjunctiva of diabetic rats in the literature. Therefore, we investigated the changes in bacterial flora in bulbar conjunctiva of rats with streptozotocin (STZ)-induced type I diabetes. A high dose of STZ (60 mg/kg, i.p.) was injected into Sprague-Dawley (SD) rats to induce type I diabetes mellitus (T1DM). The diabetic rats were raised in the animal laboratory and at 8 months post-injection of STZ swab samples were taken from the bulbar conjunctiva for cultivation of aerobic bacteria. The bacterial isolates were identified by Gram staining and biochemical features. The identified bacteria from both diabetic and healthy rats were then compared. The diabetic and healthy rats had different bacterial flora present in their bulbar conjunctiva. In total, 10 and 8 bacterial species were found in the STZ and control groups, respectively, with only three species (Enterococcus faecium, Enterococcus gallinarum and Escherichia coli) shared between the two groups. Gram-positive bacteria were common in both groups and the most abundant was Enterococcus faecium. However, after the development of T1DM, the bacterial flora in the rat bulbar conjunctiva changed considerably, with a reduced complexity evident. STZ-induced diabetes caused alterations of bacterial flora in the bulbar conjunctiva in rats, with some bacterial species disappearing and others emerging. Our results indicate that the conjunctival bacterial flora in diabetic humans should be surveyed for potential diagnostic markers or countermeasures to prevent eye infections in T1DM patients.

  1. Trans-palpebral illumination: an approach for wide-angle fundus photography without the need for pupil dilation

    OpenAIRE

    Toslak, Devrim; Thapa, Damber; Chen, Yanjun; Erol, Muhammet Kazim; Paul Chan, R. V.; Yao, Xincheng

    2016-01-01

    It is technically difficult to construct wide-angle fundus imaging devices due to the complexity of conventional transpupillary illumination and imaging mechanisms. We report here a new method, i.e., trans-palpebral illumination, for wide-angle fundus photography without the need for pupil dilation. By constructing a smartphone-based prototype imaging device, we demonstrated a 152° view in a single-shot image. The unique combination of low-cost smartphone design and automatic illumination opt...

  2. Effectiveness of Piper betle leaf infusion as a palpebral skin antiseptic

    Directory of Open Access Journals (Sweden)

    Husnun Amalia

    2009-08-01

    Full Text Available The goal of an antiseptic is to eliminate or greatly reduce the number of microorganisms in the surgical field at the time of the surgery. The objective of this study was to verify the effectiveness of 20% Piper betle leaf infusion as an antiseptic solution in pre-surgery cataract patients. A clinical trial with partner-matching design was conducted on 31 pairs of eyelids. From each pair of eyelids, one eyelid was asigned to the Piper betle infusion group and the opposite one to the povidone-iodine group. The microorganisms were collected by swab from the patient’s palpebral skin, inoculated on nutrient agar, and incubated at 37oC for 20 hours. The antiseptic effectiveness was measured by counting the microbial colonies before and after administration of the antiseptic solutions. This study demonstrates that the mean colony counts after application of 20% Piper betle leaf infusion showed a significant reduction of 27-100% compared with those before administration (p=0.001. Mean colony counts after 10% povidone-iodine administration showed a significant reduction of 88-100% compared with the mean counts before the solution was applied (p=0.000. The 20% Piper betle infusion has an antiseptic potential. Nevertheless, the 10% povidone-iodine solution has more effective antiseptic capability.

  3. Effectiveness of Piper betle leaf infusion as a palpebral skin antiseptic

    Directory of Open Access Journals (Sweden)

    Husnun Amalia

    2016-02-01

    Full Text Available The goal of an antiseptic is to eliminate or greatly reduce the number of microorganisms in the surgical field at the time of the surgery. The objective of this study was to verify the effectiveness of 20% Piper betle leaf infusion as an antiseptic solution in pre-surgery cataract patients. A clinical trial with partner-matching design was conducted on 31 pairs of eyelids. From each pair of eyelids, one eyelid was asigned to the Piper betle infusion group and the opposite one to the povidone-iodine group. The microorganisms were collected by swab from the patient’s palpebral skin, inoculated on nutrient agar, and incubated at 37oC for 20 hours. The antiseptic effectiveness was measured by counting the microbial colonies before and after administration of the antiseptic solutions. This study demonstrates that the mean colony counts after application of 20% Piper betle leaf infusion showed a significant reduction of 27-100% compared with those before administration (p=0.001. Mean colony counts after 10% povidone-iodine administration showed a significant reduction of 88-100% compared with the mean counts before the solution was applied (p=0.000. The 20% Piper betle infusion has an antiseptic potential. Nevertheless, the 10% povidone-iodine solution has more effective antiseptic capability.

  4. Ptosis Palpebral in a Urban Area named: December 5. Paez Municipality, Portuguesa State. Venezuela 2007.

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    Milenis López León

    2010-04-01

    Full Text Available A descriptive longitudinal prospective study was made in the Urban Area named December 5 of Páez Municipality, Portuguesa State, in The Venezuela’s Republic, including only the period since September 4 to December 11, 2007 with the objective to define the clinical epidemiological state of Ptosis Palpebral in the Region mentioned. The universe was conformed by 7000 patients of all ages, being a sample of 60 ill persons, for obtaining the information a structural interview was used made by the authors, having productiveness the use of Ophthalmology clinical backgrounds of each person; the obtaining data were introduced in a Pentium IV computer by means of EPINFO Program to calculate them. The female sex was the one that predominate, and it happens the same wit the skin colour (not white finding the ages between 21 and 41 years as high frequency. The moderate ptosis was the most usual, predominating the unilaterals and from etiological point of view: The acquires; obtaining the traumatics the highest incidence within them; resulting ametropias as the ocular pathologies more notables in studied patients and a considerable number of them were tributary of the surgical treatment even though the latest diagnostic, that´s why a previous detection is imposed of the referred entity, helping to improve your Qualitiy Life and reincorporating to your society .

  5. Immunohistochemical diagnosis of malignant melanoma of the conjunctiva and uvea: comparison of the novel antibody against melan-A with S100 protein and HMB-45

    DEFF Research Database (Denmark)

    Heegaard, Steffen; Jensen, O.A.; Prause, J.U.

    2000-01-01

    ophthalmology, A103, conjunctiva, gp100, HMB-45, malignant melanoma, MART-1, melan-A, S100, uvea......ophthalmology, A103, conjunctiva, gp100, HMB-45, malignant melanoma, MART-1, melan-A, S100, uvea...

  6. Reconstrucción palpebral inferior después de la escisión de tumores malignos

    OpenAIRE

    Arias Soto, Julio Cesar; Abreu Perdomo, Franklin A.; Ortiz Silveira, Marlenys; Despaigne Delisle, Justo; Matienzo Vergara, Sulli de la Caridad

    2013-01-01

    Se presentan 4 casos clínicos de pacientes de 46-76 años con carcinomas basocelular y escamoso de párpado inferior, diagnosticados en la consulta oftalmológica del Hospital General Docente "Dr. Juan Bruno Zayas Alfonso". A los afectados se le realizó tarsectomía parcial o total con reconstrucción palpebral mediante colgajos miocutáneos en islas de área cigomática y músculo nasal. Los resultados tanto funcionales como estéticos fueron óptimos y se corroboró la efectividad de los colgajos antes...

  7. Autologous conjunctiva transplantation with stem cells on edge of cornea for recurrent pterygium

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    Yun Wang

    2013-10-01

    Full Text Available AIM: To observe the clinical effectiveness and practicality the autologous conjunctiva transplantation with stem cells on edge of cornea for recurrent pterygium.METHODS: Of the 53 recurrent pterygium patients(57 eyes, after all pathological tissues were removed, underwent the autologous conjunctiva transplantation with stem cells on edge of cornea which were locked above conjunctival transplantation of the operated eye.RESULTS: Postopretive follow-up was 1-12 months for all 57 eyes, of which 3 eyes(5%relapsed. The corneoscleral autolysis was occurred in one eye and surgery treatment was conducted. Corneal wounds were healing and transplantations survived well for the remaining 53 patients without obvious surgical marks. Cure rate was 93%.CONCLUSION: Autologous conjunctiva transplantation with stem cells on edge of cornea for recurrent pterygium can meet the aesthetic requirements of the some patients, with the advantages of obtaining material easily, faster wound healing, lower postoperative recurrence rate, meeting the aesthetic needs of some patients and improving postoperative results. Thus, it is an ideal surgery and is worthy of applying on primary hospital.

  8. Palpebral portion of the orbicularis oculi muscle to repetitive nerve stimulation testing: A potential assessment indicator in patients with generalized myasthenia gravis.

    Science.gov (United States)

    Yan, Chong; Song, Jie; Pang, Song; Yi, Fangfang; Xi, Jianying; Zhou, Lei; Ding, Ding; Wang, Weifeng; Qiao, Kai; Zhao, Chongbo

    2018-02-01

    Repetitive nerve stimulation (RNS) is a valuable diagnostic method for myasthenia gravis (MG). However, its association with clinical severity was scarcely studied. We reviewed medical records and retrospectively enrolled 121 generalized MG patients. Sensitivity of different muscles to RNS and clinical scoring systems was evaluated. RNS testing revealed facial muscles have the highest positive rate, followed by proximal muscles and distal muscles, with the palpebral portion of the orbicularis oculi muscle most sensitive. Amplitude decrement of compound muscle action potential (CMAP) in the palpebral portion of the orbicularis oculi muscle is related to quantitative myasthenia gravis (QMG) scores, MG-specific manual muscle testing (MMT) scores and myasthenia gravis-related activities of daily living (MG-ADL) scores. We suggest that RNS testing of the palpebral portion of the orbicularis oculi muscle is a potential assessment indicator in patients with generalized MG. Copyright © 2017 Elsevier Ltd. All rights reserved.

  9. Triagem auditiva neonatal com emissões otoacusticas e reflexo cocleo-palpebral: estudo da sensibilidade e especificidade Newborn Hearing Screening with otoacoustic emissions and cochlear-palpebral reflex: sensitivity and specificity study

    Directory of Open Access Journals (Sweden)

    Rosanna Mariangela Giaffredo Angrisani

    2012-10-01

    Full Text Available OBJETIVO: analisar a especificidade e sensibilidade da TAN com emissões otoacústicas evocadas por estimulo transiente (EOAT associadas à pesquisa do reflexo cócleo-palpebral (RCP, comparando-os aos resultados do Potencial Evocado Auditivo de Tronco Encefalico (PEATE. MÉTODO: a casuística do presente estudo foi composta por 369 RN de risco para deficiência auditiva que foram submetidos à triagem com a captação das emissões otoacústicas evocadas por estímulo transiente e pesquisa do reflexo cócleo- palpebral. Os resultados foram comparados aos resultados do Potencial Evocado Auditivo de Tronco Encefalico (PEATE. RESULTADOS: a incidência do tipo da perda auditiva na população geral foi de 4RN (1,1% com perda coclear, 22 (5,9% com perda condutiva, 2 (0,5% com espectro da neuropatia auditiva (ENA, 14 (3,8% com alteração central e 15 (4,1% com atraso de maturação da via auditiva. A TAN mostrou 100% de sensibilidade e 94,6% de especificidade na detecção de alterações cocleares e espectro da neuropatia auditiva; 77,3% de sensibilidade e 94,6% de especificidade na detecção de alterações condutivas e 42,9% de sensibilidade e 94,6% de especificidade na detecção de alterações centrais. Todos os achados evidenciaram diferenças estatisticamente significantes em relação aos neonatos auditivamente normais. CONCLUSÃO: este protocolo de TAN mostrou-se eficaz na detecção de RN com alterações de cocleares e espectro da neuropatia auditiva com sensibilidade e especificidade elevadas.PURPOSE: to study the specificity and sensitivity of NHS with otoacoustic emissions transient stimulus (TEOAE associated with cochlear-palpebral reflex (CPR, and comparing the results of Auditory Evoked Potential (BAEP. METHOD: three hundred and sixty-nine neonates under risk of hearing loss were evaluated. Evaluation procedures consisted of transient otocoustic emissions(TOAEs, cochlear-palpebral reflex (CPR, and ABR diagnostic carried out in the

  10. Polybacterial community analysis in human conjunctiva through 16S rRNA gene libraries.

    Science.gov (United States)

    Deepthi, KrishnanNair Geetha; Jayasudha, Rajagopalaboopathi; Girish, Rameshan Nair; Manikandan, Palanisamy; Ram, Rammohan; Narendran, Venkatapathy; Prabagaran, Solai Ramatchandirane

    2018-05-14

    The conjunctival sac of healthy human harbours a variety of microorganisms. When the eye is compromised, an occasional inadvertent spread happens to the adjacent tissue, resulting in bacterial ocular infections. Microbiological investigation of the conjunctival swab is one of the broadly used modality to study the aetiological agent of conjunctiva. However, most of the time such methods yield unsatisfactory results. Hence, the present study intends to identify the bacterial community in human conjunctiva of pre-operative subjects through 16S rRNA gene libraries. Out of 45 samples collected from preoperative patients undergoing cataract surgery, 36 libraries were constructed with bacterial nested-PCR-positive samples. The representative clones with unique restriction pattern were generated through Amplified Ribosomal DNA Restriction Analysis (ARDRA) which were sequenced for phylogenetic affiliation. A total of 211 representative clones were obtained which were distributed in phyla Actinobacteria, Firmicutes, α-Proteobacteria, β-Proteobacteria, γ-Proteobacteria, Bacteroidetes, and Deinococcus-Thermus. Findings revealed the presence of polybacterial community, especially in some cases even though no bacterium or a single bacterium alone was identified through cultivable method. Remarkably, we identified 17 species which have never been reported in any ocular infections. The sequencing data reported 6 unidentified bacteria suggesting the possibility of novel organisms in the sample. Since, polybacterial community has been identified consisting of both gram positive and gram negative bacteria, a broad spectrum antibiotic therapy is advisable to the patients who are undergoing cataract surgery. Consolidated effort would significantly improve a clear understanding of the nature of microbial community in the human conjunctiva which will promote administration of appropriate antibiotic regimen and also help in the development of oligonucleotide probes to screen the

  11. Molecular and Phenotypic Characterization of Staphylococcus epidermidis Isolates from Healthy Conjunctiva and a Comparative Analysis with Isolates from Ocular Infection.

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    Luis A Flores-Páez

    Full Text Available Staphylococcus epidermidis is a common commensal of healthy conjunctiva and it can cause endophthalmitis, however its presence in conjunctivitis, keratitis and blepharitis is unknown. Molecular genotyping of S. epidermidis from healthy conjunctiva could provide information about the origin of the strains that infect the eye. In this paper two collections of S. epidermidis were used: one from ocular infection (n = 62, and another from healthy conjunctiva (n = 45. All isolates were genotyped by pulsed field gel electrophoresis (PFGE, multilocus sequence typing (MLST, staphylococcal cassette chromosome mec (SCCmec, detection of the genes icaA, icaD, IS256 and polymorphism type of agr locus. The phenotypic data included biofilm production and antibiotic resistance. The results displayed 61 PFGE types from 107 isolates and they were highly discriminatory. MLST analysis generated a total of 25 STs, of which 11 STs were distributed among the ocular infection isolates and lineage ST2 was the most frequent (48.4%, while 14 STs were present in the healthy conjunctiva isolates and lineage ST5 was the most abundant (24.4%. By means of a principal coordinates analysis (PCoA and a discriminant analysis (DA it was found that ocular infection isolates had as discriminant markers agr III or agr II, SCCmec V or SCCmec I, mecA gene, resistance to tobramycin, positive biofilm, and IS256+. In contrast to the healthy conjunctiva isolates, the discriminating markers were agr I, and resistance to chloramphenicol, ciprofloxacin, gatifloxacin and oxacillin. The discriminant biomarkers of ocular infection were examined in healthy conjunctiva isolates, and it was found that 3 healthy conjunctiva isolates [two with ST2 and another with ST9] (3/45, 6.66% had similar genotypic and phenotypic characteristics to ocular infection isolates, therefore a small population from healthy conjunctiva could cause an ocular infection. These data suggest that the healthy conjunctiva

  12. A unique case of isolated sebaceous adenoma of the bulbar conjunctiva

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    Hatice Deniz Ilhan

    Full Text Available ABSTRACT Our patient was a 34 year-old male who presented with a painless conjunctival mass that had developed 3 months before his first visit. On performing slit-lamp biomicroscopy, a lobulated pink-yellowish solid mobile mass was observed on the nasal bulbar conjunctival surface of his left eye. The tumor was excised, and histopathologic examination of the tumor revealed a sebaceous adenoma. Systemic examination was normal. No recurrence was observed during the 24-month follow-up period. Sebaceous adenoma of the bulbar conjunctiva is an extremely rare benign tumor, which may be observed to be isolated in the absence of malignancy.

  13. Extramedullary hematopoiesis of the conjunctiva presenting as active systemic disease in a patient with myelofibrosis.

    Science.gov (United States)

    Cuttler, Nirupa; Heidemann, David; Cendrowski, Christopher; Armin, Ali-Reza; Folberg, Robert

    2014-12-01

    To report the clinicopathological correlation of extramedullary hematopoiesis (EMH) of the conjunctiva in a patient with a history of myelofibrosis. Case report. Elevated pink conjunctival lesions developed bilaterally in a 73-year-old man who had been treated for myelofibrosis for 13 years. EMH was detected in the examination of tissue from the lesion of the inferior fornix of the right eye. The appearance of conjunctival lesions in a patient with myelofibrosis may indicate underlying pathology of EMH that may necessitate a change in systemic treatment of this condition.

  14. Eyelid skin as a potential site for drug delivery to conjunctiva and ocular tissues.

    Science.gov (United States)

    See, Gerard Lee; Sagesaka, Ayano; Sugasawa, Satoko; Todo, Hiroaki; Sugibayashi, Kenji

    2017-11-25

    The feasibility of topical application onto the (lower) eyelid skin to deliver hydrophilic and lipophilic compounds into the conjunctiva and ocular tissues was evaluated by comparing with conventional eye drop application. Skin permeation and the concentration of several model compounds, and skin impedance were determined utilizing eyelid skin from hairless rats, as well as abdominal skin in the same animals for comparison. In vitro static diffusion cells were used to assess the skin permeation in order to provide key insights into the relationship between the skin sites and drugs. The obtained results revealed that drug permeation through the eyelid skin was much higher than that through abdominal skin regardless of the drug lipophilicity. Specifically, diclofenac sodium salt and tranilast exhibited approximately 6-fold and 11-fold higher permeability coefficients, respectively, through eyelid skin compared with abdominal skin. Histomorphological evaluation and in vivo distribution of model fluorescent dyes were also examined in the conjunctiva and skin after eyelid administration by conventional microscope and confocal laser scanning microscope analyses. The result revealed that eyelid skin has a thinner stratum corneum, thereby showing lower impedance, which could be the reason for the higher drug permeation through eyelid skin. Comparative evaluation of lipophilic and hydrophilic model compounds administered via the eyelid skin over 8h revealed stronger fluorescence intensity in the skin and surrounding tissues compared with eye drop administration. These results suggested that the (lower) eyelid skin is valuable as a prospective site for ophthalmic medicines. Copyright © 2017 Elsevier B.V. All rights reserved.

  15. Frequência de ocorrência de carcinoma basocelular palpebral na região Centro-Oeste paulista e características dos portadores

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    Silvia Narikawa

    2011-08-01

    Full Text Available OBJETIVO: Observar a frequência de ocorrência do carcinoma basocelular palpebral na região Centro-Oeste paulista e descrever o perfil demográfico dos portadores. MÉTODOS: Estudo transversal, de amostragem aleatória, realizado em doze cidades da região Centro-Oeste do Estado de São Paulo. Foram examinados 11.167 indivíduos. Os pacientes foram avaliados em uma Unidade Móvel, com atendimento oftalmológico completo. O diagnóstico de carcinoma basocelular palpebral foi feito através do exame clínico e biomicroscópico da lesão. Os pacientes diagnosticados foram encaminhados ao Ambulatório de Plástica Ocular da Faculdade de Medicina de Botucatu para tratamento. Os dados foram submetidos à análise de frequência de ocorrência. RESULTADOS: Cinco casos de carcinoma basocelular palpebral foram identificados na amostra, correspondendo a uma frequência de ocorrência de 0,045%. Quatro pacientes eram do sexo feminino, a maioria com idade maior ou igual a 70 anos e todos os casos tinham a cor da pele branca. Apenas três indivíduos encaminhados compareceram ao serviço para exérese da lesão e confirmação diagnóstica. CONCLUSÃO: O carcinoma basocelular palpebral acomete 0,045% dos habitantes da região Centro-Oeste paulista, afetando principalmente o sexo feminino, na faixa etária próxima dos 70 anos.

  16. Avaliação da fenda palpebral após aplicação de toxina botulínica tipo A em pacientes com distonias faciais

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    Mariana Eleonora Pereira Cunial

    2012-12-01

    Full Text Available OBJETIVO: Avaliar a medida da fenda palpebral em pacientes com blefaroespasmo essencial benigno (BEB e espasmo hemifacial (EHF após a aplicação periocular de toxina botulínica tipo A. MÉTODOS: Foram estudados pacientes portadores de BEB e EHF submetidos à injeção periocular de toxina botulínica tipo A pela técnica inner orbital de aplicação. Os pacientes foram fotografados em PPO antes da aplicação e catorze dias depois dela. A fenda palpebral foi mensurada nestas imagens por meio de processamento computadorizado de imagens, utilizando o programa ImageJ. As alterações da fenda palpebral foram observadas comparando-se as medidas obtidas no pré e pós-aplicação. RESULTADOS: Comparando-se as imagens obtidas com o programa ImageJ, houve aumento estatisticamente significante (p<0,001 da fenda palpebral em 14 olhos (51,8% após a aplicação de injeção periocular da toxina botulínica e nenhuma das imagens analisadas apresentou diminuição da fenda palpebral. CONCLUSÃO: No presente estudo, os pacientes portadores de distonias faciais apresentaram aumento de fenda palpebral estatisticamente significante após aplicação periocular de toxina botulínica tipo A.

  17. Tratamento do lagoftalmo paralítico com a utilização do implante de peso de ouro recoberto pela aponeurose do músculo levantador palpebral Paralytic lagophthalmos treatment with gold weight implants covered by levator palpebrae muscle aponeurosis

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    Sergio Lessa

    2009-02-01

    Full Text Available OBJETIVO: Demonstrar a redução das complicações e melhora do resultado estético da correção do lagoftalmo paralítico com utilização de implantes de peso ouro através do recobrimento pela aponeurose do músculo levantador palpebral. MÉTODOS:Foram estudados vinte e nove pacientes portadores de paralisia facial idiopática com evolução clínica superior a 4 anos submetidos à correção cirúrgica do lagoftalmo paralítico com a utilização de uma modificação da técnica do implante de peso de ouro recoberto pela aponeurose do músculo levantador palpebral (Gladstone,1996 entre junho de 1997 e dezembro de 2006. Nenhum deles havia se submetido previamente a tratamentos cirúrgicos. RESULTADOS:Todos os pacientes apresentaram adaptação favorável dos implantes. Não houve casos de extrusão, deslocamento ou infecção, com melhora significativa da sintomatologia clínica e redução do lagoftalmo paralítico no período de acompanhamento pós-operatório que variou de 8 meses a 4 anos. CONCLUSÃO:Através da ampla dissecção da aponeurose do músculo levantador palpebral para recobrimento completo do implante do peso de ouro nós obtivemos excelentes resultados. O contorno da superfície cutânea pré-tarsal apresentou-se homogêneo, evitou-se a extrusão do implante e, comparativamente aos resultados apresentados pela técnica inicialmente descrita por Gladstone na qual realizava-se apenas a plicatura da aponeurose do músculo levantador palpebral sobre o implante de ouro, obtivemos um melhor controle do posicionamento final da pálpebra superior após o recobrimento do implante.POURPOSE: To demonstrate an improvement in paralytic lagophthalmos surgical treatment complications and aesthetic results by covering the gold weight implants with the levator palpebrae muscle aponeurosis. METHODS:We studied a case series of twenty nine patients presenting idiopatic facial palsy with more than 4 years of clinical evolution, submitted to

  18. Doença hepática aguda e edema palpebral persistente associados à mononucleose infecciosa

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    Mônica Ayres de A. Scattolin

    2007-05-01

    Full Text Available Este trabalho tem como objetivo relatar e discutir o caso clínico de um paciente portador de mononucleose infecciosa, tendo como manifestação inicial edema palpebral seguido de hepatopatia aguda e icterícia. Descrição - J.F.G.F., masculino, cinco anos, com histórico de sete dias de edema bipalpebral, conjuntivas hiperemiadas, cansaço, anorexia, febre moderada, vômitos e dor abdominal em hipocôndrio direito. Há um dia passou a apresentar icterícia, urina escura, exantema urticariforme, febre de 39,5ºC e diarréia, tendo sido internado para rehidratação e investigação diagnóstica. Ao exame físico de entrada, apresentava-se abatido, estado geral comprometido, FC: 96, FR: 30, febril, PA: 110x 60 mmHg, descorado +/4+, desidratado de 2º grau, eupnéico e ictérico ++, infartamento ganglionar assimétrico generalizado, mais acentuado em região cervical posterior. Sem alterações ao exame cardíaco e pulmonar. Abdômen distendido, doloroso à palpação, fígado a 4 cm e baço a 2,5 cm. A avaliação laboratorial revelou Hb: 10,1 g/dL, leucocitose moderada com acentuada linfocitose e atipia linfocitária evidente, ALT: 179 U/L, AST: 232 U/L, LDH: 2.103 U/L e bilirrubinas: total 6,7 mg/Dl (direta 4,9 mg/dL, urina tipo I com bilirrubinas ++ e ultra-som de abdômen com hepatoesplenomegalia inespecífica. As sorologias para toxoplasmose citomegalovírus, hepatite foram negativas e para o vírus Epstein-Barr (EBV reagente: IgG: 108 UA/mL, e IgM 28 UA/mL. Após hidratação parenteral e antitérmico, o paciente evoluiu com a melhora dos parâmetros clínicos e laboratoriais. Discussão - Estima-se, atualmente, que 50% das crianças menores de cinco anos já apresentaram infecção pelo EBV. Vários agentes causam lesão hepática aguda. Entre os vírus ressalta-se os das hepatites, entretanto, pode ocorrer hepatopatia aguda por outras causas virais, entre elas, mononucleose e citomegalia. Sabe-se que a hepatomegalia ocorre em 10% a 20

  19. Progressive replacement of oral mucosa by conjunctiva in osteo-odonto-keratoprosthesis: preliminary observations.

    Science.gov (United States)

    Pecorella, Irene; Maurizio, Taloni; Antonio, Ciardi; Giancarlo, Falcinelli

    2006-02-01

    In a Strampelli osteo-odonto-keratoprosthesis, a patch of oral mucosa is frequently used to cover the ocular surface after implantation of an osteodental lamina into the eye. In many cases, gross modifications in the eye covering become apparent a few years later. The aim of this study was to investigate the histologic findings in the clinically modified ocular surface. Biopsies were performed in 7 patients at the junction between the osteodental acrylic lamina and surrounding modified oral mucosa, during surgery for local plastic reconstruction or positioning of antiglaucoma silicone tubes. Specimens were examined by light microscopy. Six of the 7 clinically modified specimens corresponded microscopically to conjunctiva. Typical oral mucosa could still be observed overlying the osteodental acrylic lamina. The production of local regulatory factors is a possible explanation for the survival of oral mucosa over the osteodental acrylic lamina, whereas their absence in distant areas may have induced the oral mucosa to transdifferentiate into a conjunctival-type lining. Alternatively, conjunctival regrowth from forniceal stem cells should be taken into consideration.

  20. Efficacy of long scleral tunnel technique in preventing Ahmed glaucoma valve tube exposure through conjunctiva.

    Science.gov (United States)

    Kugu, Suleyman; Erdogan, Gurkan; Sevim, M Sahin; Ozerturk, Yusuf

    2015-01-01

    To evaluate the efficacy of long scleral tunnel technique used in Ahmed glaucoma valve (AGV) implantation in preventing tube exposure through conjunctiva. Patients of adult age, who were unresponsive to maximum medical treatment and underwent AGV implantation, were divided into two groups and investigated retrospectively. Group 1 consisted of 40 eyes of 38 patients that underwent surgery by long scleral tunnel technique and Group 2 consisted of 38 eyes of 35 patients that underwent implantation by processed pericardium patch graft method. The mean age was 54.8 ± 14.6 years (range 26-68 years) and the mean follow-up duration was 46.7 ± 19.4 months (range 18-76 months) for the patients in Group 1, whereas the mean age was 58.6 ± 16.7 years (range 32-74 years) and mean follow-up period was 43.6 ± 15.7 months (range 20-72 months) for the patients in Group 2 (p > 0.05). In the course of follow-up, tube exposure was detected in one (2.5%) eye in Group 1 and in three (7.9%) eyes in Group 2 (p = 0.042). Long scleral tunnel technique is beneficial in preventing conjunctival tube exposure in AGV implantation surgery.

  1. The Conjunctiva-Associated Lymphoid Tissue in Chronic Ocular Surface Diseases.

    Science.gov (United States)

    Mastropasqua, Rodolfo; Agnifili, Luca; Fasanella, Vincenzo; Nubile, Mario; Gnama, Agbeanda A; Falconio, Gennaro; Perri, Paolo; Di Staso, Silvio; Mariotti, Cesare

    2017-08-01

    Ocular surface diseases (OSDs) represent a widely investigated field of research given their growing incidence and the negative impact on quality of life. During OSDs, cytokines generated by damaged epithelia trigger and deregulate the lymphoid cells composing the eye-associated lymphoid tissues, inducing an immune-mediated chronic inflammation that amplifies and propagates the disease during time. The conjunctiva-associated lymphoid tissue (CALT), given its particular position that permits immune cells covering the cornea, might play a crucial role in the development of OSDs. Despite the recognized inflammatory role of mucosa-associated lymphoid tissues in other stations taking contact with the external environment (gut or bronchus), CALT did not gain the deserved consideration. In the last years, the diffusion of the in vivo confocal microscopy (IVCM) stimulated the interest to CALT, especially in dry eye, ocular allergy, and glaucoma. Though the initial stimuli were different, IVCM documented similar changes, represented by increased lymphoid cells within the diffuse layer, follicles and interfollicular spaces. These findings, which need to be validated by immunohistology, support the CALT stimulation during OSDs. However, while an involvement of the CALT in OSDs is hypothesizable, the exact role of this structure in their pathogenesis remains unclear and warrants further investigations.

  2. Pre-banking microbial contamination of donor conjunctiva and storage medium for penetrating keratoplasty.

    Science.gov (United States)

    Inomata, Takenori; Ono, Koichi; Matsuba, Tsuyoshi; Shiang, Tina; Di Zazzo, Antonio; Nakatani, Satoru; Yamaguchi, Masahiro; Ebihara, Nobuyuki; Murakami, Akira

    2017-09-01

    The aims of this study were to investigate the incidence of positive donor tissue cultures before transfer to preservation medium (Optisol™-GS) for penetrating keratoplasty, to verify the efficacy of antibiotics contained in Optisol™-GS by examining the drug susceptibility and to assess the relationship between the results of our microbial assessments as well as donor factors and the incidence of contamination. We conducted a retrospective, cross-sectional study using Juntendo Eye Bank records for all corneal transplantations. Two hundred donor conjunctiva harvestings and storage medium (EP-II ® ) cultures were performed between July 2008 and June 2011. We analyzed the associations between donor factors (age, gender, history of cataract surgery, death-to-preservation interval, cause of death) and contamination rates using multivariate analysis by the generalized estimating equation model. We obtained positive bacterial cultures from 154 of the 200 eyes (77.0%). The isolated bacteria were indigenous, such as coagulase-negative Staphylococci, Corynebacterium sp., and methicillin-resistant Staphylococcus aureus (MRSA). There was significant resistance to levofloxacin (18 eyes, 9.0%) and gentamicin (12 eyes, 6.0%), and no vancomycin-resistant bacteria were detected. The donor factors did not correlate with the prevalence of bacterial contamination in our criteria. Pre-banking microbial assessment allows for microbial detection, bacterial susceptibility and resistance testing. This is useful for developing preservation mediums containing effective spectrum antibiotic agents for high quality control of corneal banking.

  3. Effects Aerosol of Industrial Bleach and Detergent Mixture on Mucosa Layer and Lamina Mucosa Conjunctiva in Mice

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    Gh. Vaezi

    2013-06-01

    Full Text Available Today bleach and detergents are being frequently used and some people use their mixture for more cleaning. Because of chemical interaction of bleach and detergent, chlorine gas was released and thereby it could be dangerous for human health. This study examined the effects of exposed toxic mixture of bleach and detergent on the Mucosa layer and Lamina mucosa conjunctiva in the mice. In this study, 42 adult male mice NMRI race weighing 35-40 gr and from age 8 to 10 weeks were divided into 6 experimental groups and one control group. Experimental groups 1-2-3 with the use of chamber, the exposed 20 minutes were exposed to spray the amount 1 cc of mixture of bleach and detergent by nebulizer. Experimental groups 4-5-6 were for 35 minutes to inhale the same amount of material. Mice killed at 24-48-72 hours after exposed and the Mucosa Layer and Lamina mucosa conjunctiva tissue was studied pathology. In the study of microscopic sections prepared of mouse mucosa layer and Lamina mucosa conjunctiva tissue experimental group comparison with the control group, significant decrease was observed in mucosa layer the have (p ≤ 0.001  and significant decrease was observed in the Lamina mucosa have(p ≤ 0. 01,  p ≤ 0.001. As a result, increasing the exposed time of mixing bleach and detergent, as time passed, increasing the tissue damage and changes.

  4. Retina tissue engineering by conjunctiva mesenchymal stem cells encapsulated in fibrin gel: Hypotheses on novel approach to retinal diseases treatment.

    Science.gov (United States)

    Soleimannejad, Mostafa; Ebrahimi-Barough, Somayeh; Nadri, Samad; Riazi-Esfahani, Mohammad; Soleimani, Masoud; Tavangar, Seyed Mohammad; Ai, Jafar

    2017-04-01

    Retinitis pigmentosa (RP) and age related macular degeneration (AMD) are two retinal diseases that progress by photoreceptor cells death. In retinal transplantation studies, stem and progenitor cells inject into the sub retinal space or vitreous and then these cells can be migrate to the site of retinal degeneration and locate in the host retina and restitute vision. Our hypothesis suggests that using human conjunctiva stem cells (as the source for increasing the number of human stem cells progenitor cells in retina dysfunction diseases) with fibrin gel and also assessing its relating in vitro (cellular and molecular processes) and in vivo (vision tests and pathology) could be a promising strategy for treatment of AMD and RP disorders. In this idea, we describe a novel approach for retina tissue engineering with differentiation of conjunctiva mesenchymal stem cells (CJMSCs) into photoreceptor-like cells in fibrin gel with induction medium contain taurine. For assessment of differentiation, immunocytochemistry and real time PCR are used for the expression of Rhodopsin, RPE65, Nestin as differentiated photoreceptor cell markers in 2D and 3D culture. The results show that fibrin gel will offer a proper 3D scaffold for CJMSCs derived photoreceptor cell-like cells. Application of immune-privileged, readily available sources of adult stem cells like human conjunctiva stem cells with fibrin gel would be a promising strategy to increase the number of photoreceptor progenitor cells and promote involuntary angiogenesis needed in retina layer repair and regeneration. Copyright © 2017 Elsevier Ltd. All rights reserved.

  5. Effects of Choto-san (Diao-Teng-San) on microcirculation of bulbar conjunctiva and hemorheological factors in patients with asymptomatic cerebral infarction

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    YANG, Qiao; Kita, Toshiaki; Hikiami, Hiroaki; Shimada, Yutaka; Itoh, Takashi; Terasawa, Katsutoshi

    1999-01-01

    In this study, the effects of Choto-san ( 釣藤散 ) on the microcirculation of bulbar conjunctiva in 16 patients with asymptornatic cerebral infarction were investigated with a video-microscopic system. After the administration of Choto-san for four weeks, variables of microcirculatory flow of the bulbar conjunctiva, that is, the internal diameter of vessels, flow velocity and flow volume rate were increased (p

  6. Normal flora of conjunctiva and lid margin, as well as its antibiotic sensitivity, in patients undergoing cataract surgery at Phramongkutklao Hospital

    OpenAIRE

    Ratnumnoi,Ravee; Keorochana,Narumon; Sonthisombat,Chavalit

    2017-01-01

    Ravee Ratnumnoi, Narumon Keorochana, Chavalit Sontisombat Department of Ophthalmology, Phramongkutklao Hospital, Bangkok, Thailand Objective: This study aimed to evaluate the normal flora of conjunctiva and lid margin, as well as its antibiotic sensitivity. Design: This was a prospective cross-sectional study. Patients and methods: A prospective study was conducted on 120 patients who underwent cataract surgery at the Phramongkutklao Hospital from September 2014 to October 2014. Conjunctiva...

  7. Palpebral slant - eye

    Science.gov (United States)

    ... be diagnosed based on a family history, medical history, and a physical exam. Tests to confirm a disorder may include: Chromosome studies Enzyme assays Metabolic studies X-rays Alternative Names Mongolian ...

  8. Microflora of conjunctiva in children and its sensitivity and resistance to antibacterial drugs

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    T. N. Vorontsova

    2014-07-01

    Full Text Available Purpose: Investigation of microflora of conjunctiva and its resistance to antibacterial drugs in healthy children and patients with various inflammatory eye diseases.Methods: We examined 402 children (421 eyes in the age from 1 month till 17 years: 62 healthy children (70 eyes and 340 pa- tients with different inflammatory diseases of anterior segment of eye (351 eyes. the smear was done in all children for plating and definition of sensitivity of microflora to antibacterial drugs by method of diffusion to agar.Results: the plating was positive even in 72.9% of healthy children who entered the hospital for the planned surgery. Most often we revealed Staphylococcus epidermidis (44.3%, Staphylococcus aureus (12.8%, Streptococcus faecalis (5.7% and Enterobacter (2.9%. In children with inflammatory diseases Staphylococcus epidermidis and Staphylococcus aureus (62.6% were found fre- quently. the analysis of data showed high level of resistance of all microflora to aminoglycosides (neomycin 37.8% and tobramycin 32.7% and chloramphenicol — 37.1%. the lowest resistance of all microflora was registered to levofloxacin (11.1% and ciprofloxacin (10.5%. In gram-negative microflora we revealed the maximal sensitivity to ciprofloxacin, in gram-positive — to levofloxacin.We detected the maximal resistance of microflora to ampicillin (66.1%, and minimal — to cephalosporines (4.5% among the antibiotics of systemic application.Conclusion: the findings allow us to recommend drops containing levofloxacin (Signicef for clinical practice in pediatric ophthalmology. 

  9. Characterization of membranous (M) cells in normal feline conjunctiva-associated lymphoid tissue (CALT).

    Science.gov (United States)

    Giuliano, Elizabeth A; Finn, Kevin

    2011-09-01

    To characterize conjunctival lymphoid nodules obtained from the nictitans of healthy cats to determine if the follicle-associated epithelium (FAE) of conjunctiva-associated lymphoid tissue (CALT) in this species contains membranous (M)-cells analogous to those described in other regions of mucosa-associated lymphoid tissue (MALT). Lymphoid follicles from nictitan bulbar surfaces of 10 healthy cats (20 eyes total) were examined. Nictitans from five cats were harvested immediately post-mortem and a minimum of 12 lymphoid nodules from each third eyelid were isolated using a Zeiss operating microscope. At least three lymphoid follicles from each eye were examined using light microscopy (LM), transmission electron microscopy (TEM), and scanning electron microscopy (SEM) using standard fixation and embedding protocols. Nictitan-lymphoid follicles from another five healthy cats were processed for immunohistochemistry to characterize the distribution of T- and B-lymphocytes present beneath the FAE. The FAE overlying CALT from 10 healthy cats demonstrated morphology characteristic of M-cells including attenuated apical cell surface with blunted microvilli and microfolds, invaginated basolateral membrane forming a cytoplasmic pocket, and diminished distance between the apical and pocket membrane. Immunohistochemistry of lymphoid tissue subtending the FAE demonstrated B-cell dependent regions in the germinal centers surrounded by T-cell dependent interfollicular zones. Healthy feline CALT contains morphologic features analogous to those described in other regions of MALT. Documentation of feline conjunctival M-cells is of clinical relevance in the study of primary infectious, allergic, and autoimmune ocular diseases, as well as a potential means of vaccination or drug delivery. © 2011 American College of Veterinary Ophthalmologists.

  10. Microflora of conjunctiva in children and its sensitivity and resistance to antibacterial drugs

    Directory of Open Access Journals (Sweden)

    T. N. Vorontsova

    2012-01-01

    Full Text Available Purpose: Investigation of microflora of conjunctiva and its resistance to antibacterial drugs in healthy children and patients with various inflammatory eye diseases.Methods: We examined 402 children (421 eyes in the age from 1 month till 17 years: 62 healthy children (70 eyes and 340 pa- tients with different inflammatory diseases of anterior segment of eye (351 eyes. the smear was done in all children for plating and definition of sensitivity of microflora to antibacterial drugs by method of diffusion to agar.Results: the plating was positive even in 72.9% of healthy children who entered the hospital for the planned surgery. Most often we revealed Staphylococcus epidermidis (44.3%, Staphylococcus aureus (12.8%, Streptococcus faecalis (5.7% and Enterobacter (2.9%. In children with inflammatory diseases Staphylococcus epidermidis and Staphylococcus aureus (62.6% were found fre- quently. the analysis of data showed high level of resistance of all microflora to aminoglycosides (neomycin 37.8% and tobramycin 32.7% and chloramphenicol — 37.1%. the lowest resistance of all microflora was registered to levofloxacin (11.1% and ciprofloxacin (10.5%. In gram-negative microflora we revealed the maximal sensitivity to ciprofloxacin, in gram-positive — to levofloxacin.We detected the maximal resistance of microflora to ampicillin (66.1%, and minimal — to cephalosporines (4.5% among the antibiotics of systemic application.Conclusion: the findings allow us to recommend drops containing levofloxacin (Signicef for clinical practice in pediatric ophthalmology. 

  11. Pictorial Superiority Effect

    Science.gov (United States)

    Nelson, Douglas L.; And Others

    1976-01-01

    Pictures generally show superior recognition relative to their verbal labels. This experiment was designed to link this pictorial superiority effect to sensory or meaning codes associated with the two types of symbols. (Editor)

  12. Extensive superior limbic keratoconjunctivitis in Graves’ disease: case report and mini-review of the literature

    Directory of Open Access Journals (Sweden)

    Chelala E

    2015-03-01

    Full Text Available Elias Chelala, Hala El Rami, Ali Dirani, Henry Fakhoury, Ali Fadlallah Faculty of Medicine, Saint-Joseph University, Beirut, Lebanon Background: Superior limbic keratoconjunctivitis (SLK is characterized as an inflammation of the superior bulbar conjunctiva with predominant involvement of the superior limbus and adjacent epithelial keratitis.Methods: A 51-year-old woman, with a history of medically controlled Graves’ disease was seen with an extensive SLK involving 5 mm of the superior cornea.Results: Total remission was observed with topical steroids (DXM. Recurrence was observed 1 week after steroid discontinuation, and steroidal treatment was reintroduced with tapering over 1 month. Total remission was then observed for 1 year. Conclusion: Extensive keratitis and vascular pannus in SLK is rarely reported. This form could be treated with topical steroids. Tapering treatment remains essential for long-term success. Keywords: superior limbic keratoconjunctivitis, anti-inflammatory drugs, dexamethasone, triamcinolone, Graves’ disease

  13. Use of strontium-90 beta irradiation as an adjunctive therapy for the management of squamous cell carcinoma of the conjunctiva

    International Nuclear Information System (INIS)

    Nisa, L.; Momta, S.; Jehan, A.H.; Rahman, M.U.

    2005-01-01

    Full text: To evaluate the effectiveness of strontium-90 beta irradiation in management of squamous cell carcinoma of the conjunctiva. A retrospective analysis of the medical records of 5 patients treated with strontium-90 beta irradiation was done. Squamous cell carcinoma of the conjunctiva was histologically proved in all patients who had initial surgery to remove the major part of the lesion. This was followed by beta radiation within 48 hours with Sr -90 contact applicator obtained from Amersham International. The hand held Sr- 90 eye applicator was used after appropriately instilling the eyes with local anesthetics and a total of 5000cGy was delivered in seven fractions. Follow-up period was from 6 to 12 months. Clinical response and side effects to the therapy were used as outcome measurements. Three patients showed good response with no evidence of tumor within 6 to 12 months of the follow-up period. One patient was lost to follow-up and one patient showed local recurrence within 4 months. In this patient the tumor was more extensive involving the limbal conjunctiva and the cornea. The early side effects of beta radiation reported by all five patients were temporary local irritation of the eyes with additional mild chemosis in four patients. None of the other three potentially cured patients showed any long-term adverse reactions. There were no incidence of late radiation induced complications such as corneal ulcerations, damage to cornea, eye pain, cataract or any other serious effects in these patients within the follow-up period. In conclusion, beta irradiation is an effective post-surgical therapy for local control of superficial conjunctival squamous cell carcinoma. The very low and minimum side -effects of Sr-90 irradiation is an advantage, which makes it a good alternative to external beam radiation, which has serious side effects. (author)

  14. Cytologic status changes of the conjunctiva and tears qualitative composition in patients with «dry eye» syndrome after instillation of modern topical fluoroquinolones

    Directory of Open Access Journals (Sweden)

    N. G. Zavgorodnyaya

    2014-06-01

    Full Text Available Aim. Use of the antibiotics for eye was approved as a rational method for reducing the risk of postoperative endophthalmitis. The aim of our investigation was to study the influence of the modern topical fluoroquinolones on the qualitative composition of tears and cytological status of the conjunctiva in patients with cataract and «dry eye» syndrome. Methods and results. 102 patients (109 eyes aged 36–87 years was examined. Qualitative composition of tear fluid was studied with method of native tears crystallography and conjunctiva cytological study using impression cytoscopy method. In 72.3% of cases the tears crystallography showed signs of pathology. Cytological examination of conjunctiva showed dystrophy in 86,8% of cases. In 11% of the patients typical cross-shaped crystals were detected. Conclusion. Correlation dependence analysis showed statistically significant positive relationship (Spearman’s correlation r=0.53 between the presence of cross-shaped crystals in crystallography and severe dystrophy of conjunctiva epithelium. Instillation of modern topical fluoroquinolones worsen the cytological status of conjunctiva epithelium.

  15. Nevus y Melanoma de la conjuntiva ocular: Reporte de 3 casos Nevus and melanoma of the ocular conjunctiva: Report of 3 cases

    Directory of Open Access Journals (Sweden)

    Yolanda I. Hechavarría Duque

    2003-06-01

    Full Text Available Se reportó el estudio de las historias clínicas de 3 pacientes portadores de nevus de la conjuntiva ocular que evolucionó de manera desfavorable hacia melanoma de la conjuntiva, por lo que se plantea que el mejor tratamiento es el profiláctico en estos casos. Se realizaron conclusiones y recomendaciones.The study of the medical histories of 3 patients carriers of nevus of the ocular conjunctiva that evolved unfavorably towards melanoma of the conjunctiva is dealt with. As a result, it is stated that the prophylactic treatment is the best in these cases. Conclusions are reached and recommendations are made.

  16. Details of the Collagen and Elastin Architecture in the Human Limbal Conjunctiva, Tenon's Capsule and Sclera Revealed by Two-Photon Excited Fluorescence Microscopy.

    Science.gov (United States)

    Park, Choul Yong; Marando, Catherine M; Liao, Jason A; Lee, Jimmy K; Kwon, Jiwon; Chuck, Roy S

    2016-10-01

    To investigate the architecture and distribution of collagen and elastin in human limbal conjunctiva, Tenon's capsule, and sclera. The limbal conjunctiva, Tenon's capsule, and sclera of human donor corneal buttons were imaged with an inverted two-photon excited fluorescence microscope. No fixation process was necessary. The laser (Ti:sapphire) was tuned at 850 nm for two-photon excitation. Backscatter signals of second harmonic generation (SHG) and autofluorescence (AF) were collected through a 425/30-nm and a 525/45-nm emission filter, respectively. Multiple, consecutive, and overlapping (z-stack) images were acquired. Collagen signals were collected with SHG, whereas elastin signals were collected with AF. The size and density of collagen bundles varied widely depending on depth: increasing from conjunctiva to sclera. In superficial image planes, collagen bundles were image planes (episclera and superficial sclera), collagen bundles were thicker (near 100 μm in width) and densely packed. Comparatively, elastin fibers were thinner and sparse. The orientation of elastin fibers was independent of collagen fibers in superficial layers; but in deep sclera, elastin fibers wove through collagen interbundle gaps. At the limbus, both collagen and elastin fibers were relatively compact and were distributed perpendicular to the limbal annulus. Two-photon excited fluorescence microscopy has enabled us to understand in greater detail the collagen and elastin architecture of the human limbal conjunctiva, Tenon's capsule, and sclera.

  17. Normal flora of conjunctiva and lid margin, as well as its antibiotic sensitivity, in patients undergoing cataract surgery at Phramongkutklao Hospital.

    Science.gov (United States)

    Ratnumnoi, Ravee; Keorochana, Narumon; Sontisombat, Chavalit

    2017-01-01

    This study aimed to evaluate the normal flora of conjunctiva and lid margin, as well as its antibiotic sensitivity. This was a prospective cross-sectional study. A prospective study was conducted on 120 patients who underwent cataract surgery at the Phramongkutklao Hospital from September 2014 to October 2014. Conjunctival and lid margin swabs were obtained from patients before they underwent cataract surgery. These swabs were used to inoculate blood agar and chocolate agar plates for culturing. After growth of the normal flora, the antibiotic sensitivity method using tobramycin, moxifloxacin, levofloxacin, and cefazolin was applied. Normal flora of conjunctiva and lid margin, along with its antibiotic sensitivity, from patients who underwent cataract surgery was assessed. A total of 120 eyes were included in this study, and bacterial isolation rates were identified. Five bacteria from the lid margin were cultured, namely, coagulase-negative staphylococcus (58.33%), Streptococcus spp. (2.5%), Corynebacterium (1.67%), Micrococcus spp. (1.67%), and Staphylococcus aureus (0.83%). Two bacteria from the conjunctiva were cultured, namely, coagulase-negative staphylococcus (30%) and Streptococcus spp. (0.83%). Results of antibiotic sensitivity test showed that all isolated bacteria are sensitive to cefazolin 100%, tobramycin 98.67%, levofloxacin 100%, and moxifloxacin 100%. Coagulase-negative staphylococci are the most common bacteria isolated from conjunctiva and lid margin.

  18. In vivo confocal microscopy of conjunctiva in preservative-free timolol 0.1% gel formulation therapy for glaucoma.

    Science.gov (United States)

    Frezzotti, Paolo; Fogagnolo, Paolo; Haka, Gentiana; Motolese, Ilaria; Iester, Michele; Bagaglia, Simone A; Mittica, Pietro; Menicacci, Cristina; Rossetti, Luca; Motolese, Eduardo

    2014-03-01

    To evaluate the effects at 1 year of preservative-free timolol gel and preserved timolol eye drops on conjunctiva and tear parameters. Forty patients with primary open-angle glaucoma or ocular hypertension were randomized to the two treatment groups and compared with 20 healthy age-matched controls. Clinical tests (IOP, Schirmer I test, and lacrimal film break-up time BUT) and in vivo conjunctival confocal microscopy (IVCM) were performed in all patients at baseline and after 12 months. IVCM (HRT II Rostock Cornea Module; Heidelberg Engineering GmbH, Heidelberg, Germany) was performed after topical anaesthesia in the four cardinal locations and at the corresponding limbus to analyse conjunctiva cells. The main IVCM outcomes were goblet cell density and epithelial regularity. IVCM and clinical parameters were similar in the three groups at baseline. After 12 months, intra-epithelial goblet cell density was significantly lower in the preserved (48.25 ± 7.70) than in the preservative-free beta-blocker group (86.83 ± 22.17, p preserved beta-blocker medication group than in the preservative-free beta-blocker group (p preserved timolol (respectively, 11.3 ± 2.97 and 8.12 ± 0.99) compared with preservative-free timolol (16.8 ± 1.83 and 11.27 ± 1.27, p preservative-free beta-blocker gel induces less changes at ocular surface than preserved beta-blockers, a fact that should be considered to obtain less adverse effects and maximal adherence to treatment in a chronic condition such as glaucoma. © 2013 Acta Ophthalmologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.

  19. Evaluation of efficacy of topical povidone-iodine and different types of fluoroquinolones in the sterilization of bacterial flora on the conjunctiva.

    Science.gov (United States)

    Coskun, Mehmet; Altintas, Ayse Gul Kocak; Anayol, Mustafa Alpaslan; Raza, Sabri; Celikbilek, Nevreste; Simsek, Saban

    2011-12-01

    pretreatment period in ofloxacin group, ofloxacin seems to be superior to povidone-iodine on the reduction of bacterial flora on the conjunctiva.

  20. Bathymetry of Lake Superior

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Bathymetry of Lake Superior has been compiled as a component of a NOAA project to rescue Great Lakes lake floor geological and geophysical data and make it more...

  1. Superior Hiking Trail Facilities

    Data.gov (United States)

    Minnesota Department of Natural Resources — Superior Hiking Trail main trail, spurs, and camp spurs for completed trail throughout Cook, Lake, St. Louis and Carlton counties. These data were collected with...

  2. Superior Hiking Trail

    Data.gov (United States)

    Minnesota Department of Natural Resources — Superior Hiking Trail main trail, spurs, and camp spurs for completed trail throughout Cook, Lake, St. Louis and Carlton counties. These data were collected with...

  3. Alternate superior Julia sets

    International Nuclear Information System (INIS)

    Yadav, Anju; Rani, Mamta

    2015-01-01

    Alternate Julia sets have been studied in Picard iterative procedures. The purpose of this paper is to study the quadratic and cubic maps using superior iterates to obtain Julia sets with different alternate structures. Analytically, graphically and computationally it has been shown that alternate superior Julia sets can be connected, disconnected and totally disconnected, and also fattier than the corresponding alternate Julia sets. A few examples have been studied by applying different type of alternate structures

  4. Resultados postquirúrgicos de la ptosis palpebral asociada a Síndromes. ICO Ramón Pando Ferrer.2005- 2006.

    Directory of Open Access Journals (Sweden)

    María Elena Ríos Rodríguez

    2007-10-01

    Full Text Available Se realizó un estudio observacional, descriptivo, retrospectivo, en pacientes con síndromes asociados a ptosis palpebral en el ICO Ramón Pando Ferrer en el período comprendido entre enero 2005 y diciembre del 2006. Se estudiaron un total de 32 pacientes y 44 ojos. El 43.7% tenían entre 20 – 39 años. No hubo diferencias en la distribución por sexo, aunque con ligera inclinación hacia el sexo femenino. Más del 50% de las ptosis eran bilaterales. Según etiología predominaron las miogénicas para un 59.3%, y dentro de ellas las congénitas representadas por el síndrome de blefarofímosis (31.2%, y las adquiridas por la Miastenia Gravis (15.6%. Las ptosis neurogénicas constituyen un 34.3% representadas por la parálisis el III par y el síndrome de Marcus Gunn, para un 12.5% y 9.3% respectivamente. El 81.2% de los síndromes tuvieron posibilidades quirúrgicas. Al 66% del total de ojos se les realizó la suspensión al músculo frontal y al resto el reforzamiento de la aponeurosis y la Fasanella Servat Modificada en un 20.4% y 13.6% respectivamente. Los resultados se calificaron de buenos en el 54.5%, regulares en el 45.4% y ninguno tuvo malos resultados. Las complicaciones que se presentaron fueron mínimas representadas por la hipocorrección en el reforzamiento de la aponeurosis para un 44.4%. El 79.5% no presentaron complicaciones. Concluimos que muchos síndromes asociados a las ptosis palpebral pueden ser corregidos quirúrgicamente contribuyendo a mejorar la calidad de vida de estos pacientes.

  5. Carcinoma sebáceo palpebral: Presentación de un caso Palpeebral sebaceous carcinoma: A case report

    Directory of Open Access Journals (Sweden)

    María Cáceres Toledo

    1999-06-01

    Full Text Available Se presenta a un paciente de 26 años de edad, con diagnóstico clínico de chalación gigante del párpado inferior del ojo derecho de 6 meses de evolución, con un gran componente inflamatorio y bordes ulcerados que no había respondido a la terapéutica médica ni quirúrgica. El resultado de la biopsia tomada de este lesión fue, carcinoma epidermoide infiltrante, por lo que decidimos hacer la cirugía con margen oncológico, que requirió de un colgajo libre del párpado superior con fines estéticos y funcionales. El estudio histológico de la tumoración evidenció un carcinoma sebáceo. La evolución posoperatoria de este paciente, al año de operado, ha sido satisfactoriaA 26-year-old patient wich clinical diagnosis of giant chalazi on of the lower eyelid of the right eye with 6 months of evolution and with a great inflamatory component and ulcerated edges that had not responded to mechical and surgical therapeutics is presented. The result of the biopsy was infiltrating epidermoid carcinoma, so it was decided to perform surgery with oncological margin that required a free flap of the upper eyelid with aesthetic functional ends. The histological study of the tumor proved the existance of a sebaceous carcinoma. The posoperative evolution of the patient after a year has been satisfactory

  6. The Efficacy of 1% Chloramphenicol Eye Ointment Versus 2.5% Povidone-Iodine Ophthalmic Solution in Reducing Bacterial Colony in Newborn Conjunctivae.

    Science.gov (United States)

    Bramantyo, Triwijayanti; Roeslani, Rosalina Dewi; Andriansjah, Andriansjah; Sitorus, Rita S

    2015-01-01

    This study aimed to evaluate bacterial pattern and reduction of bacterial colonies in neonatal conjunctivae after prophylaxis 1% chloramphenicol eye ointment and 2.5% povidone-iodine ophthalmic solution. A double-blind randomized controlled trial was conducted. Swabs were taken from the inferior fornix conjunctiva of the right eyes of 60 newborns 1 hour after birth. Either the 2.5% povidone-iodine ophthalmic solution or the 1% chloramphenicol eye ointment was randomly applied to the conjunctivae. Conjunctival swabs were taken 2 hours after prophylaxis treatment. Specimens were delivered to the Microbiology Laboratory to determine the number of bacterial colonies and to evaluate bacterial pattern. Sixty eye specimens were included in the study. Bacterial growth was shown in 44 eye specimens, whereas it was not found in the remaining 16 eye specimens. The bacteria found in neonatal conjunctivae was gram-positive coccus (61%), followed by gram-positive bacillus (36%) and gram-negative bacillus (2%). Both agents significantly reduced the bacterial colony-forming unit (P = 0.00); however, the effect was not significantly different as shown by statistics between both groups (P = 0.748), indicating that the 2.5% povidone-iodine ophthalmic solution had a similar effect to the 1% chloramphenicol eye ointment. No adverse effect such as toxic conjunctivitis or corneal haziness was found in both groups. The 2.5% povidone-iodine ophthalmic solution has been proven as effective as the 1% chloramphenicol eye ointment and induces no toxic reaction. Because it is less expensive than the other, it could be recommended as a good alternative for ophthalmia neonatorum prophylaxis. Further studies with a larger sample size should be conducted to confirm its cost-effectiveness.

  7. Immunohistochemical profile of VEGF, TGF-β and PGE₂ in human pterygium and normal conjunctiva: experimental study and review of the literature.

    Science.gov (United States)

    Bianchi, E; Scarinci, F; Grande, C; Plateroti, R; Plateroti, P; Plateroti, A M; Fumagalli, L; Capozzi, P; Feher, J; Artico, M

    2012-01-01

    Human pterygium is made up of chronic proliferative fibro-vascular tissue growing on the ocular surface. This disease exhibits both degenerative and hyperplastic properties. Some fibroangiogenic factors have recently been shown to play a potential role in fibrovascular diseases via the angiogenesis process. The aim of this study is to evaluate VEGF, TGF-β and PGE₂ expression in the epithelial, endothelial and stromal cells of human pterygium and normal conjunctiva in order to determine whether these factors participate in the development of pterygium. Ten specimens from patients with pterygium and two normal conjunctivas (cadavers) were analyzed by immunohistochemistry using specific antibodies against these growth factors. The technique used was ABC/HRP (Avidin complexed with biotinylated peroxidase). Immunoreactivity of VEGF was significantly increased in the epithelium, vascular endothelium and stromal cells in primary pterygium as compared with normal conjunctiva. A moderate expression of TGF-β in the pterygium was observed in the epithelial and stromal layers. On the contrary, immunolabeling of this growth factor in the human normal conjunctiva was weak. PGE₂ was strongly expressed in the epithelium of patients with pterygium, as in control conjunctival tissues, and the immunolabeling was moderate in the stroma from the same patients. Our results suggest that these growth factors may contribute to the progression of primary pterygium by increasing angiogenesis, thus leading to the formation of new blood vessels from the pre-existing vasculature. We conclude that VEGF, TGF-β and PGE₂ may be potential therapeutic targets in the treatment of this disease although proof of this evidence requires further studies.

  8. Self and Superior Assessment.

    Science.gov (United States)

    1986-06-01

    model of the self-evaluation process as it differs from the evaluation process used by superiors. Symbolic Interactionism One view of self assessment is...supplied by the symbolic interactionists (Cooley, 1902; Head, 1934), who state that self perceptions are generated largely from individuals...disagreements remained even immediately after an appraisal interview in which a great deal of feedback was given. Research on the symbolic interactionist

  9. Superior facet syndrome

    International Nuclear Information System (INIS)

    Kubo, Yoshichika; Igarashi, Seishi; Koyama, Tsunemaro

    1985-01-01

    Sciatica caused by root entrapment in the lateral recess was named superior facet syndrome by Epstein in 1972. Few reports on this subject based on large numbers of cases have been documented to date. Of the patients with sciatica, 32 patients were diagnosed to have root entrapment at the lateral recess L 5 or/and S 1 lumbar spine. Out of 32 patients, 20 patients were operated on and the lateral entrapment was recognized in all of surgical cases. Neuroradiological findings, especially of metrizamide CT (met. CT), were documented in detail. Thirty two patients were classified in three types according to radiological findings. They were congenital or developmental, degenerative, and combined type, respectively, Fourteen cases belonged to the congenital type, 13 to the degenerative and 5 to the combined type. Each group had the mean ages of 23.4, 53.8, and 36.8 years old, respectively. Of 32 cases the entrapment occured in 47 L 5 roots and 11 S 1 roots. There was no remarkable laterality. In operation the unroofing of the lateral recess were done and the sciatica subsided postoperatively in all of surgical cases. Met. CT revealed extreme medial protrusion of the superior articular joint in 18 of 24 cases(75%) and none filling of the root in the lateral recess in 21 of 24 cases (87.5%). In the degenerative type, met. CT showed some degenerative changes that were hypertrophy or deformity of the articular joints and spur formation of the vertebral body. In contrast to met. CT, metrizamide myelography revealed only slight changes, which were poor filling of the root before it turned out the pedicle of lateral compression of the root. In plain films or lumbar spine articular joints at Lsub(4/5) were formed in coronal plane in 69% of cases of the L 5 root entrapment. Met. CT using ReView technique was of great diagnostic value in superior facet syndrome. (author)

  10. SU-F-T-75: Dosimetry Considerations in the Use of Hanging-Eye Block for Lesions of the Conjunctiva

    Energy Technology Data Exchange (ETDEWEB)

    Grelewicz, Z; Lee, B; Cutright, D; Kang, Z; Gopalakrishnan, M; Sathiaseelan, V; Zhang, H [Northwestern Memorial Hospital, Chicago, IL (United States)

    2016-06-15

    Purpose: Superficial lesions in the conjunctiva are frequently treated with en face electrons, using a hanging block to spare dose to the lens of the eye. Dose to the tumor and lens depend on the design and setup of the block and supporting apparatus. We performed in phantom measurements in order to characterize the dose sparing effects of the block as well as the under-dosing effect under the supporting apparatus for 6 MeV treatment. Methods: The commercial hanging block studied uses a 1.2 cm diameter tungsten cylinder supported by a 3 mm diameter acrylic rod. Point dose measurements under the hanging block, under an unblocked part of the field, and under the acrylic rod were performed using MOSFET detectors. In addition, EBT3 film was used for both PDD and profile measurements at a depth in phantom of 3 mm for both 105 and 103 cm SSD. Results: MOSFET measurements reported a dose reduction of 95% under the tungsten block when using an SSD of 103 cm, and 86% when using an SSD of 105 cm at a depth in phantom of 3 mm. Film measurements showed that the area under the acrylic rod may be under-dosed by as much as 30% when using 103 SSD. MOSFET measurements confirmed that when using an SSD of 103 cm, the area under the acrylic rod is under-dosed by up to 30% at 3mm depth, compared to the unblocked part of the field. Conclusion: The effectiveness of the commercial hanging block apparatus depends on setup, with 95% lens sparing possible with an SSD of 103 cm. This short SSD is necessary for sharp penumbra. At this SSD, substantial under-dosing under the acrylic support rod is possible. This must be mitigated with either feathering, or using an alternative method of support for the tungsten block.

  11. Information Superiority through Data Warehousing

    National Research Council Canada - National Science Library

    Warner, Neil

    2001-01-01

    .... A precursor to a knowledge edge is Information Superiority. Within most current Command Support Systems minimal integration and fusion of data is undertaken to provide the basis of information superiority...

  12. Tectonic corneal graft for conjunctival rhinosporidiosis with scleral melt

    Directory of Open Access Journals (Sweden)

    Pushpa Jacob

    2011-01-01

    Full Text Available A 16 year old girl presented with irritation and watering of the right eye for 3 months. On examination, the superior perilimbal sclera was ectatic with incarcerated uveal tissue covered by conjunctiva. The conjunctiva showed discreet, yellow white mucoid spots. Excision biopsy of the conjunctiva showed subepithelial spherules of sporangia containing numerous endospores, suggestive of rhinosporidiosis. Diathermy was applied to flatten the staphyloma. The ectatic area was covered with a corneal patch graft. The patient was started on prednisolone acetate eye drops and oral dapsone for 6 months. Corneal graft was well incorporated and conjunctivalized by 3 months. Since the graft was not seen within the palpebral aperture, there was good cosmetic result. The corneal graft had the added advantage of transparency which allowed visualization of the underlying tissue to diagnose early recurrence. There was no recurrence at 6 months.

  13. Aerobic bacterial microbiota of the conjunctiva in diabetic patients with normal and altered glycated hemoglobin levels in two regions in Brazil

    Directory of Open Access Journals (Sweden)

    Natalia Pimentel Moreno

    2014-12-01

    Full Text Available Purpose: To study the aerobic bacterial microbiota of the conjunctiva in diabetic patients with regard to the management of diabetes, assessed using glycated hemoglobin levels. Methods: A cross-sectional study was conducted using conjunctival smears of diabetic patients from both sexes and with different ages, residing in two different Brazilian cities (Sorocaba and Rio Branco. A control group of non-diabetic patients was also included. The diabetic patients were considered to have controlled diabetes when their glycated hemoglobin level was ≤7% and blood glucose level was ≤126 mg/dL. Patients with non-controlled diabetes were those with glycated hemoglobin levels >7% and blood glucose levels >126 mg/dL. The samples obtained were inoculated in Brain-Heart Infusion broth and in culture media for aerobic bacteria (blood and chocolate agars; bacterial growth was evaluated in a microbiology laboratory. Results: A total of 120 eyes of 120 patients were included in the present study. The percentage of cultures in which bacterial growth was observed was greater in diabetic patients, although the difference was not statistically significant (p=0.103. There was a greater trend toward bacterial growth in the conjunctiva of diabetic patients with altered fasting blood glucose. There was no difference in the frequency of bacterial growth on the conjunctiva between diabetic patients with normal or altered glycated hemoglobin levels. In Sorocaba, conjunctival bacterial growth was similar to that observed in Rio Branco. The microorganism most frequently detected in the present study was Staphylococcus epidermidis, followed by Staphylococcus aureus, Proteus mirabilis, and Escherichia coli. Conclusion: There was no difference between diabetic patients with normal or altered glycated hemoglobin levels. The microorganisms found were similar to those found in studies investigating the conjunctival bacterial flora of diabetic and non-diabetic patients.

  14. Mapracorat, a selective glucocorticoid receptor agonist, causes apoptosis of eosinophils infiltrating the conjunctiva in late-phase experimental ocular allergy

    Directory of Open Access Journals (Sweden)

    Baiula M

    2014-06-01

    -α.Results: Mapracorat, administered into the conjunctival sac of OVA-sensitized guinea pigs 2 hours after allergen exposure, was effective in reducing clinical signs, eosinophil infiltration, and eosinophil peroxidase activity in the guinea pig conjunctiva; furthermore, it reduced conjunctival mRNA levels and protein expression of both CCL5 and CCL11. Mapracorat was more effective than dexamethasone in increasing, in conjunctival sections of OVA-treated guinea pigs, apoptotic eosinophils.Conclusion: Mapracorat displays anti-allergic properties in controlling the late phase of ocular allergic conjunctivitis and is a promising candidate for the topical treatment of allergic eye disorders.Keywords: allergic conjunctivitis, late-phase response, eosinophil

  15. Sobredentadura total superior implantosoportada

    Directory of Open Access Journals (Sweden)

    Luis Orlando Rodríguez García

    2010-06-01

    Full Text Available Se presenta un caso de un paciente desdentado total superior, rehabilitado en la consulta de implantología de la Clínica "Pedro Ortiz" del municipio Habana del Este en Ciudad de La Habana, Cuba, en el año 2009, mediante prótesis sobre implantes osteointegrados, técnica que se ha incorporado a la práctica estomatológica en Cuba como alternativa al tratamiento convencional en los pacientes desdentados totales. Se siguió un protocolo que comprendió una fase quirúrgica, procedimiento con o sin realización de colgajo y carga precoz o inmediata. Se presenta un paciente masculino de 56 años de edad, que acudió a la consulta multidisciplinaria, preocupado, porque se le habían elaborado tres prótesis en los últimos dos años y ninguna reunía los requisitos de retención que él necesitaba para sentirse seguro y cómodo con las mismas. El resultado final fue la satisfacción total del paciente, con el mejoramiento de la calidad estética y funcional.

  16. Microbiological efficacy of lomefloxacin and other drug's regarding microorganisms isolated from the human conjunctiva Atividade biocida da lomefloxacina em relação aos microorganismos isolados de conjuntiva humana

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    Ana Luísa Hofling-Lima

    2001-04-01

    Full Text Available Purpose: To evaluate and compare the in vitro susceptibility of human conjunctival bacterial isolates to various antimicrobial agents, including lomefloxacin, other fluoroquinolones (ciprofloxacin, norfloxacin, and ofloxacin, aminoglycosides (gentamicin, tobramycin, and amicacin, and cephalosporin (cephalothin. Methods: Antibiotic susceptibility tests conducted over a period of 27 months with 613 bacterial isolates from the conjunctiva were retrospectively analyzed. Results: In relation to the total number of positive isolates, the fluoroquinolones showed greater in vitro effectiveness than the other analyzed antibiotics. All bacterial isolates showed significantly higher susceptibility to ciprofloxacin than to lomefloxacin. Conclusion: The fluoroquinolones are not only equally effective against all conjunctival bacterial isolates, but they also show superior antimicrobial activity in comparison to aminoglycosides and cephalothin. These results suggest that fluoroquinolones, such as lomefloxacin, can be beneficially prescribed for conjunctival infections and also as prophylaxis in ocular surgery.Objetivo: Avaliar e comparar a atividade biocida in vitro de bactérias isoladas da conjuntiva humana à lomefloxacina, a outras fluorquinolonas (ciprofloxacina, norfloxacina e ofloxacina, aos aminoglicosídeos (gentamicina, tobramicina e amicacina e à cefalosporina (cefalotina. Métodos: Foram analisados retrospectivamente os resultados dos antibio-gramas realizados no período de 27 meses com 613 bactérias isoladas da conjuntiva. Resultados: A eficácia in vitro das quinolonas de acordo com o total dos isolamentos positivos foi superior em relação aos outros antibióticos avaliados. A suscetibilidade do total de bactérias à ciprofloxacina foi significantemente mais alta quando comparada à lomefloxacina. Conclusão: Os resultados praticamente equivalentes da suscetibilidade de bactérias isoladas da conjuntiva a fluorquinolonas, associado

  17. Altered cytokine balance in the tear fluid and conjunctiva of patients with Sjögren's syndrome keratoconjunctivitis sicca.

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    Pflugfelder, S C; Jones, D; Ji, Z; Afonso, A; Monroy, D

    1999-09-01

    To compare epidermal growth factor (EGF) concentration in tear fluid and levels of inflammatory cytokines in the conjunctival epithelium of patients with Sjögren's syndrome keratoconjunctivitis sicca with those of normal controls. Schirmer 1 tear testing, corneal fluorescein staining and conjunctival impression cytology for quantitation of goblet cell density were performed in ten patients with Sjögren's syndrome-associated keratoconjunctivitis sicca and ten asymptomatic normal controls. ELISA was used to detect the concentration of EGF in tear fluid and interleukin 6 in lysates of conjunctival cytology specimens obtained from all subjects. The levels of RNA transcripts encoding inflammatory cytokines [interleukin 1alpha_(IL-1alpha), interleukin 6 (IL-6), interleukin 8 (IL-8), tumor necrosis factor alpha_(TNF-alpha), and transforming growth factor beta1 (TGF-beta1)] as well as a housekeeping gene (G3PDH) were evaluated in conjunctival cytology specimens taken from all subjects by semiquantitative competitive reverse transcriptase polymerase chain reaction (RT-PCR). Decreased tear fluid EGF concentration was noted in Sjögren's syndrome patients (mean 0.68 +/- 0.59 ng/ml) compared to controls (mean 1.66 +/- 0.45 ng/ml, P = 0.004). Significantly increased levels of IL-1alpha, IL-6, IL-8, TNF-alpha and TGF-beta1 RNA transcripts were found in the conjunctival epithelium of Sjögren's syndrome patients compared to controls (P G3PDH was similar in both groups. The concentration of IL-6 protein was significantly higher in Sjögren's syndrome conjunctiva samples (P = 0.012). Tear EGF concentration correlated with Schirmer 1 scores (rho 0.767, P < 0.001), corneal fluorescein staining scores (rho -0.562, P = 0.01), conjunctival goblet cell density (rho 0.661, P = 0.001) and the levels of IL-1alpha_and IL-8 RNA in the conjunctival epithelium (rho -0.677 and -0.747, respectively, P = 0.001). Both IL-1alpha_and IL-8 RNA in the conjunctival epithelium increased as Schirmer 1

  18. Alterações da microbiota conjuntival e palpebral após uso tópico de lomefloxacina e tobramicina na cirurgia de catarata e cirurgia refrativa

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    Höfling - Lima Ana Luisa

    2002-01-01

    Full Text Available Objetivo: Avaliar as alterações da microbiota conjuntival e palpebral após o uso tópico de colírios de lomefloxacina ou tobramicina a 0,3% no preparo de pacientes a serem submetidos à cirurgia de catarata e cirurgia refrativa e avaliar a sensibilidade das bactérias isoladas da conjuntiva e pálpebra a estes antibióticos. Métodos: Realizou-se um estudo prospectivo de análise da microbiota conjuntival e palpebral de pacientes submetidos à cirurgia de catarata e cirurgia refrativa (PRK ou LASIK. O estudo da microbiota conjuntival e palpebral foi realizado antes das cirurgias, sem uso de agentes para profilaxia, no período pós-operatório durante o uso de profilaxia, e após a suspensão dos antibióticos. Resultados: O uso tópico de tobramicina e lomefloxacina reduziu o número de colheitas positivas na conjuntiva e pálpebra nos indivíduos submetidos à cirurgia de catarata e cirurgia refrativa. Em ambos os grupos de pacientes ocorreu maior resistência dos microrganismos à tobramicina. No grupo submetido à cirurgia de catarata, pacientes tratados profilaticamente com tobramicina tiveram uma recuperação da microbiota mais lenta após a suspensão do antibiótico do que com a lomefloxacina, ocorrendo o oposto no grupo submetido à cirurgia refrativa. Conclusão: Tanto a lomefloxacina quanto a tobramicina foram eficazes em diminuir o número de culturas positivas da conjuntiva e da pálpebra enquanto estavam sendo administrados, sendo esta diminuição mais acentuada na conjuntiva. Houve maior resistência à tobramicina na maioria das colheitas realizadas. A lomefloxacina apresentou número menor de bactérias resistentes do que a tobramicina durante o uso da antibioticoterapia tópica profilática. O uso de antibiótico reduziu o número de amostras positivas.

  19. Reconstrucción total del párpado superior mediante colgajo frontal Whole repair made in the upper eyelid using a frontal flap

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    Yamilé León Rodríguez

    2009-12-01

    Full Text Available Los pacientes que han sido sometidos a resecciones quirúrgicas por cáncer, que han sufrido lesiones por quemaduras de espesor total o traumas avulsivos con pérdida extensa de tejidos que engloban la totalidad del párpado superior, acuden con relativa frecuencia a consulta por presentar la cornea expuesta, y dicha exposición resulta en ulceraciones, cicatriz y ceguera. En estos pacientes se observa una gran insatisfacción por el inconveniente que representa no poder usar una prótesis ocular y algo no menos importante, el gran defecto estético. Se presenta el caso de un paciente del sexo masculino, de 30 años de edad, que sufrió múltiples lesiones por el estallido de un artefacto explosivo, con pérdida total del párpado superior derecho y enucleación ocular. Se le realizó reconstrucción palpebral total mediante el colgajo dermograso frontal y se obtuvieron buenos resultados estéticos.Patients underwent to surgical resections from cancer and whole thickness burn lesions or avulsion traumata with an extent loss of tissues which shape the upper eyelid, came with a relative frequency to consultation due to corneal exposition and this exposition resulting in ulcerations, scar, and blindness. These patients are very unsatisfied because they can not use of an ocular prosthesis, and something less important, the big aesthetic defect. Authors present the case of a male patient aged 30 with multiple lesions from explosion of an explosive artifact with loss of right upper eyelid and ocular enucleation. A total palpebral reconstruction was performed using a frontal dermal fatty flap with good aesthetic results.

  20. The study of the use of a latex biomembrane and conjunctival autograft in rabbit conjunctiva wound healing.

    Science.gov (United States)

    Pinho, Erika Christina Canarim Martha de; Chahud, Fernando; Lachat, João-José; Coutinho-Netto, Joaquim José; Sousa, Sidney Julio Faria E

    2018-04-01

    RESUMO Objetivo: Estudar o uso da biomembrana de látex e o transplante conjuntival autólogo na cicatrização conjuntival em coelhos. Métodos: Em nove coelhos albinos, neo-zelandeses, machos foram removidas áreas retangulares idênticas, do quadrante supero nasal, adjacente ao limbo, de ambos os olhos. As áreas desnudas da camada esclerótica nos olhos direitos foram recobertas com biomembrana de látex e a dos olhos esquerdos com enxerto conjuntival autólogo. Os animais foram sacrificados em grupos de três, aos 7, 14 e 21 dias após a cirurgia. Os tecidos do local cirúrgico, incluindo a córnea, foram fixados em formaldeído, antes de serem processados em parafina e corados com hematoxilina e eosina. A natureza e a intensidade da resposta inflamatória e o padrão de epitelização da superfície conjuntival foram avaliados sob microscopia óptica, em seções histológicas longitudinais, passando pelo centro dos espécimes anatômicos. Resultados: Até o décimo quarto dia pós-operatório, o grupo que recebeu a biomembrana apresentou reação inflamatória mais intensa do que o grupo com auto enxerto conjuntival. Aos 14 dias, os olhos com biomembrana apresentavam-se menos inflamados e com estroma mais espesso do que aos 7 dias. Aos 21 dias, a reparação conjuntival de ambos os grupos apresentavam características semelhantes. Conclusão: Apesar de apresentar uma cicatrização mais lenta, a biomembrana de látex se mostrou tão eficaz quanto o auto enxerto conjuntival na reconstrução da superfície ocular após três semanas de cicatrização pós-operatória. Devido as suas baixas toxicidade e alergenicidade, este material parece ser uma opção terapêutica promissora na reconstrução da conjuntiva.ABSTRACT Purpose: To study a latex biomembrane and conjunctival autograft with regard to the promotion of conjunctival healing in rabbits. The study included nine male albino rabbits. In these rabbits, a rectangular area of the conjunctiva was surgically

  1. Ectrópio palpebral em portador da síndrome de Down e conjuntivite alérgica: relato de caso Eyelid ectropion in Down's syndrome related to allergic conjunctivitis: case report

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    Claudia Akemi Shiratori

    2007-08-01

    Full Text Available Relata-se o caso de paciente com síndrome de Down, portador de importante ectrópio mecânico da pálpebra inferior, relacionado com conjuntivite alérgica, catarata e ceratocone. Foi feito tratamento cirúrgico, empregando a técnica de "tarsal strip" e ressecção da lamela posterior que estava redundante e espessa, com bom resultado estético e funcional.This is a case report of a patient with Down's syndrome with an important mechanical ectropion and elongation of the lower lid related to chronic allergic conjunctivitis, besides cataract and keratoconus. The tarsal strip technique and ressection of redundant and thick conjunctiva was the surgical approach chosen for this case. Functional and cosmetic outcomes were considered satisfactory.

  2. Writing superiority in cued recall

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    Carina eFueller

    2013-10-01

    Full Text Available In list learning paradigms with free recall, written recall has been found to be less susceptible to intrusions of related concepts than spoken recall when the list items had been visually presented. This effect has been ascribed to the use of stored orthographic representations from the study phase during written recall (Kellogg, 2001. In other memory retrieval paradigms, either better recall for modality-congruent items or an input-independent writing superiority effect have been found (Grabowski, 2005. In a series of four experiments using a paired associate (PA learning paradigm we tested (a whether output modality effects on verbal recall can be replicated in a paradigm that does not involve the rejection of semantically related intrusion words, (b whether a possible superiority for written recall was due to a slower response onset for writing as compared to speaking in immediate recall, and (c whether the performance in PA word recall was correlated with performance in an additional episodic memory task. We found better written recall in the first half of the recall phase, irrespective of the modality in which the material was presented upon encoding. An explanation based on longer response latencies for writing and hence more time for retrieval could be ruled out by showing that the effect persisted in delayed response versions of the task. Although there was some evidence that stored additional episodic information may contribute to the successful retrieval of associate words, this evidence was only found in the immediate response experiments and hence is most likely independent from the observed output modality effect. In sum, our results from a PA learning paradigm suggest that superior performance for written versus spoken recall cannot be (solely explained in terms of additional access to stored orthographic representations from the encoding phase. Our findings rather suggest a general writing-superiority effect at the time of memory

  3. Prosopomorphic vessels from Moesia Superior

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    Nikolić Snežana

    2008-01-01

    Full Text Available The prosopomorphic vessels from Moesia Superior had the form of beakers varying in outline but similar in size. They were wheel-thrown, mould-made or manufactured by using a combination of wheel-throwing and mould-made appliqués. Given that face vessels are considerably scarcer than other kinds of pottery, more than fifty finds from Moesia Superior make an enviable collection. In this and other provinces face vessels have been recovered from military camps, civilian settlements and necropolises, which suggests that they served more than one purpose. It is generally accepted that the faces-masks gave a protective role to the vessels, be it to protect the deceased or the family, their house and possessions. More than forty of all known finds from Moesia Superior come from Viminacium, a half of that number from necropolises. Although tangible evidence is lacking, there must have been several local workshops producing face vessels. The number and technological characteristics of the discovered vessels suggest that one of the workshops is likely to have been at Viminacium, an important pottery-making centre in the second and third centuries.

  4. Generation of retinal pigmented epithelium from iPSCs derived from the conjunctiva of donors with and without age related macular degeneration.

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    Zhouhui Geng

    Full Text Available Fidelity in pluripotent stem cell differentiation protocols is necessary for the therapeutic and commercial use of cells derived from embryonic and induced pluripotent stem cells. Recent advances in stem cell technology, especially the widespread availability of a range of chemically defined media, substrates and differentiation components, now allow the design and implementation of fully defined derivation and differentiation protocols intended for replication across multiple research and manufacturing locations. In this report we present an application of these criteria to the generation of retinal pigmented epithelium from iPSCs derived from the conjunctiva of donors with and without age related macular degeneration. Primary conjunctival cells from human donors aged 70-85 years were reprogrammed to derive multiple iPSC lines that were differentiated into functional RPE using a rapid and defined differentiation protocol. The combination of defined iPSC derivation and culture with a defined RPE differentiation protocol, reproducibly generated functional RPE from each donor without requiring protocol adjustments for each individual. This successful validation of a standardized, iPSC derivation and RPE differentiation process demonstrates a practical approach for applications requiring the cost-effective generation of RPE from multiple individuals such as drug testing, population studies or for therapies requiring patient-specific RPE derivations. In addition, conjunctival cells are identified as a practical source of somatic cells for deriving iPSCs from elderly individuals.

  5. Interleukin-1β and tumour necrosis factor-α levels in conjunctiva of diabetic patients with symptomatic moderate dry eye: case–control study

    Science.gov (United States)

    Zhang, Chen; Xi, Lei; Zhao, Shaozhen; Wei, Ruihua; Huang, Yue; Yang, Ruibo; Su, Long; Liu, Xun

    2016-01-01

    Objectives To compare expression of interleukin (IL)-1β and tumour necrosis factor (TNF)-α in the conjunctiva of diabetic and non-diabetic patients with symptomatic moderate dry eye. Setting and participants Nineteen diabetic patients with dry eye, 15 non-diabetic patients with dry eye and 14 diabetic patients without dry eye were recruited. The relative expression of IL-1β and TNF-α in conjunctival impression cytology (CIC) specimens was evaluated using immunofluorescent staining and in conjunctival biopsy specimens using immunohistochemical staining. Results The diabetic dry eye group showed significantly higher grades of metaplasia than the non-diabetic dry eye and diabetic without dry eye groups (both pdry eye group was significantly increased compared with the non-diabetic dry eye and diabetic without dry eye groups (p=0.002, pdry eye, while levels of IL-1β and TNF-α in apical conjunctival epithelium were similar in the CIC specimens. These findings suggest that the inflammatory response is not limited to the surface of conjunctival epithelial cells, and is more serious in the basal layer of the epithelium, which may play an important role in the pathogenesis of dry eye in diabetic patients. PMID:27489152

  6. Double elevator weakening for unilateral congenital superior oblique palsy with ipsilateral superior rectus contracture and lax superior oblique tendon.

    Science.gov (United States)

    Khan, Arif O

    2012-06-01

    In unilateral congenital superior oblique palsy, a large hypertropia is sometimes associated with ipsilateral contracture of the superior rectus muscle and apparent overaction of the contralateral superior oblique. Ipsilateral double elevator weakening is one surgical approach; however, this procedure could compromise supraduction. We report a series of three consecutive patients who underwent ipsilateral superior rectus and inferior oblique recessions for unilateral superior oblique palsy. Intraoperatively, all three patients were found to have a lax ipsilateral superior oblique tendon. Postoperatively, all three patients had satisfactory correction of the hypertropia and abnormal head position with minimal supraduction defect. This procedure seems to be an acceptable initial surgical option for treating congenital superior oblique muscle palsy with ipsilateral contracture of the superior rectus muscle, even when the ipsilateral superior oblique tendon is lax. Copyright © 2012 American Association for Pediatric Ophthalmology and Strabismus. Published by Mosby, Inc. All rights reserved.

  7. Efficient programming of human eye conjunctiva-derived induced pluripotent stem (ECiPS) cells into definitive endoderm-like cells.

    Science.gov (United States)

    Massumi, Mohammad; Hoveizi, Elham; Baktash, Parvaneh; Hooti, Abdollah; Ghazizadeh, Leili; Nadri, Samad; Pourasgari, Farzaneh; Hajarizadeh, Athena; Soleimani, Masoud; Nabiuni, Mohammad; Khorramizadeh, Mohammad R

    2014-03-10

    Due to pluripotency of induced pluripotent stem (iPS) cells, and the lack of immunological incompatibility and ethical issues, iPS cells have been considered as an invaluable cell source for future cell replacement therapy. This study was aimed first at establishment of novel iPS cells, ECiPS, which directly reprogrammed from human Eye Conjunctiva-derived Mesenchymal Stem Cells (EC-MSCs); second, comparing the inductive effects of Wnt3a/Activin A biomolecules to IDE1 small molecule in derivation of definitive endoderm (DE) from the ECiPS cells. To that end, first, the EC-MSCs were transduced by SOKM-expressing lentiviruses and characterized for endogenous expression of embryonic markers Then the established ECiPS cells were induced to DE formation by Wnt3a/Activin A or IDE1. Quantification of GSC, Sox17 and Foxa2 expression, as DE-specific markers, in both mRNA and protein levels revealed that induction of ECiPS cells by either Wnt3a/Activin A or IDE1 could enhance the expression level of the genes; however the levels of increase were higher in Wnt3a/Activin A induced ECiPS-EBs than IDE1 induced cells. Furthermore, the flow cytometry analyses showed no synergistic effect between Activin A and Wnt3a to derive DE-like cells from ECiPS cells. The comparative findings suggest that although both Wnt3a/Activin A signaling and IDE1 molecule could be used for differentiation of iPS into DE cells, the DE-inducing effect of Wnt3a/Activin A was statistically higher than IDE1. Copyright © 2014 Elsevier Inc. All rights reserved.

  8. Incidence and Antimicrobial Sensitivity Profiles of Normal Conjunctiva Bacterial Flora in the Central Area of China: A Hospital-Based Study

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    Hua Tao

    2017-05-01

    Full Text Available Objective: To study the distribution and patterns of resistance to antimicrobial agents of normal conjunctival bacteria.Materials and Methods: Conjunctival specimens were collected from 8,224 patients and then cultured, which underwent antimicrobial susceptibility test following standard methods. Patients with infectious symptoms such as erythema or oedema and those using systemic or topical antibiotics within 1 month were excluded.Results: In this study, the incidence of isolated bacteria was 24.2%. The middle aged group of 41–65 years presented the lowest rate of bacterial isolation which was 19.4%, while the highest isolation rate (83.1% was found in patients in the age range of 0–6 years. In every age group, the incidence of bacterial isolation in men was higher than that in women. The top 3 most commonly isolated micro-organisms were Staphylococcus epidermidis (39.7%, Streptococcus pneumoniae (4.5%, and Staphylococcus aureus (2.7%, of which about 83.1% S. aureus were isolated in the group of 0-6 years. We found that coagulase-negative Staphylococcus (CONS were more resistant to penicillin, macrolides, clindamycin and sulfonamides with the rate ranging from 57.9 to 90.8%, which were highly susceptible to vancomycin, linezolid, rifampin, tetracyclines, and aminoglycosides. Contrasting to CONS, the general resistance rate of S. aureus was significantly lower. Additionally, Streptococcus was susceptible well to the majority of antimicrobial agents, while highly resistant to macrolides and tetracyclines with the rate >80%.Conclusions: In conclusion, our study revealed the incidence and antimicrobial sensitivity profiles of normal conjunctiva bacterial flora in the central area of China, which could be useful in the prevention of ocular infections. Importantly, our data could be used to guide the selection of appropriate prophylactic agents.

  9. Conjunctiva-Associated Lymphoid Tissue (CALT) Reactions to Antiglaucoma Prostaglandins with or without BAK-Preservative in Rabbit Acute Toxicity Study

    Science.gov (United States)

    Liang, Hong; Baudouin, Christophe; Labbe, Antoine; Riancho, Luisa; Brignole-Baudouin, Françoise

    2012-01-01

    Conjunctiva-associated lymphoid tissue (CALT) is closely associated with ocular surface immunity. This study investigated the effects of antiglaucoma prostaglandin analogs with or without benzalkonium chloride (BAK) preservative on organized CALT using an acute toxic model. A total of 48 albino rabbits were used and seven groups of treatments were constituted. Solutions (50 µl) of PBS, 0.02%BAK, 0.02%BAK+latanoprost, 0.015%BAK+travoprost, 0.005%BAK+bimatoprost, BAK-freetravoprost preserved with the SofZia® system or BAK-freetafluprost were instilled 15 times at 5-min intervals in both eyes. CALT changes were analyzed using in vivo confocal microscopy (IVCM), immunohistology in cryosections for detecting MUC-5AC+ mucocytes and CD45+ hematopoietic cells. Antiglaucoma eye drops stimulated inflammatory cell infiltration in the CALT, and seemed to be primarily related to the concentration of their BAK content. The CALT reaction after instillation of BAK-containing eye drops was characterized by inflammatory cell infiltration in the dome and intrafollicular layers and by cell circulation inside the lymph vessels. CD45 was strongly expressed in the CALT after instillation of all BAK-containing solutions at 4 h and decreased at 24 h. The number of MUC-5AC+ mucocytes around the CALT structure decreased dramatically after instillation of BAK-containing solutions. This study showed for the first time the in vivo aspect of rabbit CALT after toxic stimuli, confirming the concentration-dependent toxic effects of BAK. IVCM-CALT analysis could be a pertinent tool in the future for understanding the immunotoxicologic challenges in the ocular surface and would provide useful criteria for evaluating newly developed eye drops. PMID:22442734

  10. Light and electron microscopic study of the eyelids, conjunctiva-associated lymphoid tissue and lacrimal gland in Bilgorajska Goose (Anser anser).

    Science.gov (United States)

    Klećkowska-Nawrot, Joanna; Nowaczyk, Renata; Goździewska-Harłajczuk, Karolina; Barszcz, Karolina; Kowalczyk, Artur; Łukaszewicz, Ewa

    2016-01-01

    Normal structure of the accessory organs of the eye is essential for normal eye physiology. Among the most important accessory organs of the eye are the eyelids, the conjunctiva-associated lymphoid tissue (CALT) and the lacrimal gland (LG). The aim of this study was to demonstrate the histological structure of the eyelids and LG by histochemical and ultrastructural analysis. The study was performed on 13 adult female Bilgorajska geese. Eyelid samples were stained with the Alcian blue (AB pH 2.5) and periodic acid-Schiff (PAS) methods. Staining methods used for LG were AB pH 2.5, aldehyde fuchsin (AF), PAS and Hale's dialysed iron (HDI). Within the connective tissue of the eyelids, well-developed, diffuse, CALT follicles were observed, mostly under the conjunctival epithelium. Numerous lymphocytes were present within loose connective tissue. Staining of the eyelids with the PAS method demonstrated the presence of goblet cells of a mucous nature, and AB pH 2.5 staining indicated the presence of sulfated acid mucopolysaccharides. PAS staining of LG revealed the presence of secretory cells containing weakly PAS-positive granules. All epithelial cells of the corpus glandulae and the duct systems reacted positively to AB pH 2.5. HDI staining detected the presence of carboxylated acid mucopolysaccharides. Transmission electron microscopy investigations revealed two types of secretory epithelial cells in LG. Both types of LG cells contained drop-like secretory vesicles of different sizes with low or high electron density in cytoplasm, as well as small and large lipid vacuoles, and numerous small primary lysosomes.

  11. Retracción esencial de la conjuntiva: A propósito de un caso Essential retraction of the conjunctiva: A propos of a case

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    Belkis Vega Quiroga

    2001-06-01

    Full Text Available Se presenta un caso de retracción esencial de la conjuntiva en una mujer de 83 años de edad, caso clínico poco frecuente y de gran interés. Se caracteriza por ser una conjuntivitis cicatrizal crónica que no debe ser confundida con el pénfigo vulgar. Afecta más a la mujer que al hombre (2:1, usualmente en pacientes de más de 60 años y rara en menores de 30. Existe la forma idiopática y la inducida por medicamentos. En los individuos afectados de penfigoide cicatrizal se han encontrado autoanticuerpos en la membrana basal del epitelio. Aquí se discuten su diagnóstico diferencial, el tratamiento impuesto, así como las tendencias terapéuticas actuales de la enfermedad. Para ello hicimos una revisión detallada del caso: sus antecedentes personales y familiares, historia de la enfermedad actual, exámenes de laboratorio y tratamiento impuesto.The case of an 83-year-old woman with essential retraction of the conjunctiva, a rare clinical case of great interest, is presented. It is characterized by a cicatrizal chronic conjunctivitis that should not be mistaken for pemphigus vulgaris. Women are more affected than men (2:1. It is usually observed in patients over 60 and rarely in individuals under 30. It may be idiopathic or induced by drugs. Autoantibodies have been found in the basal membrane of the epithelium among subjects with cicatrizal pemphigus. Its differential diagnosis, treatment and the current therapeutic trends of the disease are discussed here. We made a detailed review of the case that included her personal and family history, history of the present disease, laboratory tests, and treatment.

  12. Conjunctival mucinous adenocarcinoma in an ostrich (Struthio camelus)

    DEFF Research Database (Denmark)

    Perrin, Kathryn L.; Bertelsen, Mads F.; Bartholin, Henrik

    2017-01-01

    . Gross examination revealed a botryoid mass attached to the inferior palpebral conjunctiva and extending onto the palpebral aspect of the nictitating membrane. Euthanasia was selected, and the histological diagnosis of the second mass was a mixed mucinous adenocarcinoma; however, no acid-fast bacteria...

  13. Escuela Superior de Palos Verdes

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    Neutra, Richard J.

    1965-02-01

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

  14. Sobredentadura total superior implantosoportada Superior total overdenture on implants

    Directory of Open Access Journals (Sweden)

    Luis Orlando Rodríguez García

    2010-06-01

    Full Text Available Se presenta un caso de un paciente desdentado total superior, rehabilitado en la consulta de implantología de la Clínica "Pedro Ortiz" del municipio Habana del Este en Ciudad de La Habana, Cuba, en el año 2009, mediante prótesis sobre implantes osteointegrados, técnica que se ha incorporado a la práctica estomatológica en Cuba como alternativa al tratamiento convencional en los pacientes desdentados totales. Se siguió un protocolo que comprendió una fase quirúrgica, procedimiento con o sin realización de colgajo y carga precoz o inmediata. Se presenta un paciente masculino de 56 años de edad, que acudió a la consulta multidisciplinaria, preocupado, porque se le habían elaborado tres prótesis en los últimos dos años y ninguna reunía los requisitos de retención que él necesitaba para sentirse seguro y cómodo con las mismas. El resultado final fue la satisfacción total del paciente, con el mejoramiento de la calidad estética y funcional.This is the case of a total maxilla edentulous patient seen in consultation of the "Pedro Ortíz" Clinic Implant of Habana del Este municipality in 2009 and con rehabilitation by prosthesis over osteointegration implants added to stomatology practice in Cuba as an alternative to conventional treatment in patients totally edentulous. We follow a protocol including a surgery or surgical phase, technique without or with flap creation and early or immediate load. This is a male patient aged 56 came to our multidisciplinary consultation worried because he had three prostheses in last two years and any fulfilled the requirements of retention to feel safe and comfortable with prostheses. The final result was the total satisfaction of rehabilitated patient improving its aesthetic and functional quality.

  15. Paso superior en una ladera

    Directory of Open Access Journals (Sweden)

    Bender, O.

    1965-07-01

    Full Text Available The Redwood highway, through the Californian forest, runs on a viaduct, as it crosses a mountain slope of about 45° inclination. The firm ground is fairly deep, and as an additional constructional difficulty, it was necessary to respect the natural beauty of the countryside. A structure of portal frames were built, forming a number of short spans. These spans were bridged with metal girders, on which a 19 m wide deck was placed. The columns are hollow and have a transversal cross beam, to join each pair. There was difficulty in excavating the foundations for the columns, as it was necessary to dig through the soft top soil, and also prevent this soil from hurting the trunks of the forest trees. Another significant difficulty in the construction of this viaduct was the access to the working site, since there were no suitable platforms from which to operate the appropriate machinery. This made it necessary to do a lot of the work by manual operation. As one of the edges of the deck is very close to the mountain side, a supporting beam was erected on this side. It was made of concrete, on metal piles. The formwork for the deck structure was placed on the concrete stems of the supporting piles.La autopista denominada Redwood (California salva, con un paso superior, la ladera de un bosque cuya pendiente es del 1/1. El terreno firme se halla a bastante profundidad, añadiéndose, a los naturales problemas de la construcción, el imperativo de respetar la belleza agreste del paraje. La solución adoptada consiste en una estructura porticada, con varios tramos de pequeñas luces, salvados con vigas metálicas, sobre los que se coloca la losa del tablero, de 19 m de anchura total. Los soportes están constituidos por pórticos de dos montantes huecos (con bases de hormigón en masa por debajo del suelo, hasta el firme coronados por un cabezal. La perforación de pozos para el hormigonado de los montantes presentaba la dificultad de atravesar el terreno

  16. 75 FR 28542 - Superior Resource Advisory Committee

    Science.gov (United States)

    2010-05-21

    ... Self-Determination Act (Pub. L. 110-343) and in compliance with the Federal Advisory Committee Act. The purpose of the meeting is to orient the new Superior Resource Advisory Committee members on their roles... following business will be conducted: Overview of the roles and responsibilities of the Superior Resource...

  17. Superiority in value and the repugnant conclusion

    DEFF Research Database (Denmark)

    Jensen, Karsten Klint

    2007-01-01

    superiority does not amount to a radical value difference at all. I then spell out the consequences of these results for different interpretations of Griffin's suggestion regarding population ethics. None of them comes out very successful, but perhaps they nevertheless retain some interest.......James Griffin has considered a weak form of superiority in value a possible remedy to the Repugnant Conclusion. In this paper, I demonstrate that, in a context where value is additive, this weaker form collapses into a stronger form of superiority. And in a context where value is non-additive, weak...

  18. Superior mesenteric artery syndrome causing growth retardation

    Directory of Open Access Journals (Sweden)

    Halil İbrahim Taşcı

    2013-03-01

    Full Text Available Superior mesenteric artery syndrome is a rare and lifethreateningclinical condition caused by the compressionof the third portion of the duodenum between the aortaand the superior mesenteric artery’s proximal part. Thiscompression may lead to chronic intermittent, acute totalor partial obstruction. Sudden weight-loss and the relateddecrease in the fat tissue are considered to be the etiologicalreason of acute stenosis. Weight-loss accompaniedby nausea, vomiting, anorexia, epigastric pain, andbloating are the leading complaints. Barium radiographs,computerized tomography, conventional angiography,tomographic and magnetic resonance angiography areused in the diagnosis. There are medical and surgical approachesto treatment. We hereby present the case ofa patient with superior mesenteric artery syndrome withdelayed diagnosis.Key words: superior mesenteric artery syndrome, nausea-vomiting, anorexia

  19. Estudo clínico-patológico do pilomatrixoma palpebral: experiência no hospital universitário Prof. Edgard Santos Clinicopathologic study of eyelid pilomatrixoma: the experience of the "Hospital Universitário Prof. Edgard Santos"

    Directory of Open Access Journals (Sweden)

    Eduardo Ferrari Marback

    2007-06-01

    Full Text Available OBJETIVO: Relatar a experiência com pilomatrixoma palpebral no Hospital Universitário Profº. Edgard Santos, em período de 30 anos. MÉTODOS: Revisão no Registro do Laboratório de Patologia Ocular, de todos os casos de tumores palpebrais no período de 1974 a 2004. Após a identificação dos casos de pilomatrixoma, foram coletados dados referentes a gênero, idade, tempo de sintomatologia, aspecto, localização e suspeita diagnóstica inicial. As lâminas coradas pela hematoxilina e eosina foram revisadas. RESULTADOS: Dentre os 621 casos de tumores palpebrais, quatro eram de pilomatrixoma (0,64%. Três pacientes eram do sexo masculino. A idade média foi de 25 anos, variando de 8 a 54. O tempo de sintomatologia médio foi de cinco meses, variando de 2 a 12. Em três casos a lesão localizava-se na pálpebra inferior. Em apenas um caso o diagnóstico clínico foi correto. Ao exame anatomopatológico, dois casos apresentavam pseudocápsula. O caso cuja sintomatologia foi mais prolongada exibia predominância de células do tipo fantasma. Reação tipo corpo estranho foi vista em todos os casos, calcificação em apenas um. CONCLUSÕES: Trata-se de tumor benigno bastante raro, acometendo principalmente jovens. Devido a sua raridade e pleomorfismo à apresentação, dificilmente o diagnóstico clínico é correto.PURPOSE: To report the experience with eyelid pilomatrixoma during 30 years in a university hospital. METHODS: A review of the Ophthalmic Pathology Laboratory at the "Hospital Universitario Prof. Edgard Santos", was conducted to identify eyelid tumor cases from 1974 to 2004. After identification of pilomatrixoma cases, a chart review retrieved data regarding gender, age, duration of symptoms, gross aspect, anatomic localization and clinical diagnosis. The hematoxilin and eosin stained sections were reviewed. RESULTS: Of a total of 621 eyelid tumors, four (0.64% were pilomatrixomas. Three patients were male. The mean age at diagnosis

  20. Superior versus inferior Ahmed glaucoma valve implantation.

    Science.gov (United States)

    Pakravan, Mohammad; Yazdani, Shahin; Shahabi, Camelia; Yaseri, Mehdi

    2009-02-01

    To compare the efficacy and safety of Ahmed glaucoma valve (AGV) (New World Medical Inc., Rancho Cucamonga, CA) implantation in the superior versus inferior quadrants. Prospective parallel cohort study. A total of 106 eyes of 106 patients with refractory glaucoma. Consecutive patients with refractory glaucoma underwent AGV implantation in the superior or inferior quadrants. Main outcome measures included intraocular pressure (IOP) and rate of complications. Other outcome measures included best corrected visual acuity (BCVA), number of glaucoma medications, and success rate (defined as at least 30% IOP reduction and 5glaucoma surgery, phthisis bulbi, or loss of light perception. Of a total of 106 eyes, 58 and 48 eyes underwent AGV implantation in the superior and inferior quadrants, respectively. Baseline characteristics were comparable in the study groups, except for preoperative IOP, which was higher in the superior group (P = 0.01). Patients were followed for a mean period of 10.6+/-8.49 months and 10.58+/-6.75 months in the superior and inferior groups, respectively (P = 0.477). BCVA was comparable between the groups at all postoperative visits (P>0.122). After 1 year, statistically significant but comparable IOP reduction from baseline (Pglaucoma medications was comparable after 1 year (1.3+/-1.2 vs. 1.9+/-0.8 for superior and inferior implants, respectively, P = 0.256). Success rates were also similar at 1 year: 27 eyes (81.8%) versus 20 eyes (95.2%) for superior and inferior implants, respectively (P = 0.227). However, the overall rate of complications, such as implant exposure necessitating removal, cosmetically unappealing appearance, and endophthalmitis, was higher in the inferior group: 12 eyes (25%) versus 3 eyes (5.2%) for superior and inferior groups, respectively, (P = 0.004). Superior and inferior AGV implants have similar intermediate efficacy in terms of IOP reduction, decrease in number of glaucoma medications, and preservation of vision. However

  1. Persistent left superior vena cava with absent right superior vena cava: image findings

    International Nuclear Information System (INIS)

    Araujo Junior, Cyrillo Rodrigues de; Carvalho, Tarcisio Nunes; Fraguas Filho, Sergio Roberto; Costa, Marlos Augusto Bitencourt; Jacob, Beatriz Mahmud; Machado, Marcio Martins; Teixeira, Kim-Ir-Sen Santos; Ximenes, Carlos Alberto

    2003-01-01

    Persistent left superior vena cava absent right superior vena cava is a rare anomaly, with less than 150 cases reported in the literature. Congenitally persistent left superior vena cava is the most common variant of systemic venous return to the heart, resulting embryologically from failure of the left anterior cardinal vein to become obliterated. Its incidence varies from 0.3% in patients with otherwise normal heart to 4.3% in patients with congenital heart disease. In the majority of the patients, a right superior vena cava is present as well, but rarely the right anterior cardinal vein degenerates resulting in the absence of the normal right superior vena cava. The blood from the right side is carried by the persistent left superior vena cava to the right atrium through the coronary sinus. We report the case of a patient with a persistent left superior vena cava and absence of right superior vena cava identified by chance during a chest radiograph and computed tomography examination for investigation of chronic pulmonary obstructive disease. The patient had no congenital heart disease and the blood from the right side was drained by the persistent left superior vena cava into the right atrium through the coronary sinus. (author)

  2. The picture superiority effect in associative recognition.

    Science.gov (United States)

    Hockley, William E

    2008-10-01

    The picture superiority effect has been well documented in tests of item recognition and recall. The present study shows that the picture superiority effect extends to associative recognition. In three experiments, students studied lists consisting of random pairs of concrete words and pairs of line drawings; then they discriminated between intact (old) and rearranged (new) pairs of words and pictures at test. The discrimination advantage for pictures over words was seen in a greater hit rate for intact picture pairs, but there was no difference in the false alarm rates for the two types of stimuli. That is, there was no mirror effect. The same pattern of results was found when the test pairs consisted of the verbal labels of the pictures shown at study (Experiment 4), indicating that the hit rate advantage for picture pairs represents an encoding benefit. The results have implications for theories of the picture superiority effect and models of associative recognition.

  3. Vena cava superior syndrome associated with sarcoidosis

    International Nuclear Information System (INIS)

    Wurm, K.; Walz, M.; Reidemeister, J.C.; Donhuijsen, K.

    1988-01-01

    We report the first observation of clinical manifestations of vena cava superior syndrome (VCSS) associated with sarcoidosis. Twenty-four years after the first signs of the disease had been noted, mediastinal lymphomas penetrating the wall of the vena cava superior caused complete obstruction. It is most unusual for the vessel wall to be destroyed in this way, which explains why VCSS is often missed in sarcoidosis. The obstructed vessel was resected and successfully replaced by a Gore-Tex prosthesis. The importance of VCSS for the differential diagnosis is pointed out. Two further peculiarities are the simultaneous occurrence of elevated intraocular pressure and VCSS, and the familial incidence. (orig.) [de

  4. Superior oblique luxation and trochlear luxation as new concepts in superior oblique muscle weakening surgery

    NARCIS (Netherlands)

    Mombaerts, I.; Koornneef, L.; Everhard-Halm, Y. S.; Hughes, D. S.; Maillette de Buy Wenniger-Prick, L. J.

    1995-01-01

    We used superior oblique luxation and trochlear luxation as new surgical procedures to treat acquired Brown's syndrome and superior oblique muscle overaction. We studied nine patients (11 eyes) who underwent trochlear surgery between 1988 and 1993. Four patients had acquired Brown's syndrome and

  5. Magnetic resonance imaging evaluation of meniscoid superior labrum: normal variant or superior labral tear

    Directory of Open Access Journals (Sweden)

    Marcelo Novelino Simão

    Full Text Available Abstract Objective: The objective of this study was to determine the incidence of a "meniscoid" superior labrum. Materials and Methods: This was a retrospective analysis of 582 magnetic resonance imaging examinations of shoulders. Of those 582 examinations, 110 were excluded, for a variety of reasons, and the final analysis therefore included 472 cases. Consensus readings were performed by three musculoskeletal radiologists using specific criteria to diagnose meniscoid labra. Results: A meniscoid superior labrum was identified in 48 (10.2% of the 472 cases evaluated. Arthroscopic proof was available in 21 cases (43.8%. In 10 (47.6% of those 21 cases, the operative report did not include the mention a superior labral tear, thus suggesting the presence of a meniscoid labrum. In only one of those cases were there specific comments about a mobile superior labrum (i.e., meniscoid labrum. In the remaining 11 (52.4%, surgical correlation demonstrated superior labral tears. Conclusion: A meniscoid superior labrum is not an infrequent finding. Depending upon assumptions and the requirement of surgical proof, the prevalence of a meniscoid superior labrum in this study was between 2.1% (surgically proven and 4.8% (projected. However, superior labral tears are just as common and are often confused with meniscoid labra.

  6. Superior intellectual ability in schizophrenia: neuropsychological characteristics.

    Science.gov (United States)

    MacCabe, James H; Brébion, Gildas; Reichenberg, Abraham; Ganguly, Taposhri; McKenna, Peter J; Murray, Robin M; David, Anthony S

    2012-03-01

    It has been suggested that neurocognitive impairment is a core deficit in schizophrenia. However, it appears that some patients with schizophrenia have intelligence quotients (IQs) in the superior range. In this study, we sought out schizophrenia patients with an estimated premorbid Intelligence Quotient (IQ) of at least 115 and studied their neuropsychological profile. Thirty-four patients meeting diagnostic criteria for schizophrenia or schizoaffective disorder, as defined by the Diagnostic and Statistical Manual of Mental Disorders (4th ed.; DSM-IV), with mean estimated premorbid IQ of 120, were recruited and divided into two subgroups, according to whether or not their IQ had declined by at least 10 points from their premorbid estimate. Their performance on an extensive neuropsychological battery was compared with that of 19 IQ-matched healthy controls and a group of 16 "typical" schizophrenia patients with estimated premorbid IQ Schizophrenia patients whose estimated premorbid and current IQ both lay in the superior range were statistically indistinguishable from IQ-matched healthy controls on all neurocognitive tests. However, their profile of relative performance in subtests was similar to that of typical schizophrenia patients. Patients with superior premorbid IQ and evidence of intellectual deterioration had intermediate scores. Our results confirm the existence of patients meeting DSM-IV diagnostic criteria for schizophrenia who have markedly superior premorbid intellectual level and appear to be free of gross neuropsychological deficits. We discuss the implications of these findings for the primacy of cognitive deficits in schizophrenia.

  7. The Picture Superiority Effect and Biological Education.

    Science.gov (United States)

    Reid, D. J.

    1984-01-01

    Discusses learning behaviors where the "picture superiority effect" (PSE) seems to be most effective in biology education. Also considers research methodology and suggests a new research model which allows a more direct examination of the strategies learners use when matching up picture and text in efforts to "understand"…

  8. Mammographic varicosities indicative of a superior mediastinal ...

    African Journals Online (AJOL)

    In addition, an abnormal calibre of the superficial veins can reflect not only underrying breast pathology, but a collateral venous return resulting from an upper mediastinal obstruction. A case mammographically demonstrating mammary varicosities resulting from a superior mediastinal syndrome is described. S. Afr. Med.

  9. COSEE Superior Creates Passion for Science

    Science.gov (United States)

    COSEE was a transformative educational experience that has changed the way I teach. In July, I participated in the COSEE Lake Superior Shipboard and Shoreline Science program. I spent a week on the US EPA’s R/V Lake Guardian with 14 other teachers and a crew of sailors and scient...

  10. Perturbation resilience and superiorization of iterative algorithms

    International Nuclear Information System (INIS)

    Censor, Y; Davidi, R; Herman, G T

    2010-01-01

    Iterative algorithms aimed at solving some problems are discussed. For certain problems, such as finding a common point in the intersection of a finite number of convex sets, there often exist iterative algorithms that impose very little demand on computer resources. For other problems, such as finding that point in the intersection at which the value of a given function is optimal, algorithms tend to need more computer memory and longer execution time. A methodology is presented whose aim is to produce automatically for an iterative algorithm of the first kind a 'superiorized version' of it that retains its computational efficiency but nevertheless goes a long way toward solving an optimization problem. This is possible to do if the original algorithm is 'perturbation resilient', which is shown to be the case for various projection algorithms for solving the consistent convex feasibility problem. The superiorized versions of such algorithms use perturbations that steer the process in the direction of a superior feasible point, which is not necessarily optimal, with respect to the given function. After presenting these intuitive ideas in a precise mathematical form, they are illustrated in image reconstruction from projections for two different projection algorithms superiorized for the function whose value is the total variation of the image

  11. Aneurysm of the superior mesenteric artery

    Energy Technology Data Exchange (ETDEWEB)

    Gebauer, A

    1984-11-01

    This is a report about 4 patients with aneurysms of the superior mesenteric artery of arteriosclerotic, mycotic and probably congenital etiology together with a review of the literature as to the etiology, diagnostic possibilities and therapy. Arteriography is the method of choice even though a diagnosis may be possible by sonography or CT in special cases. Even though an aneurysm of the superior mesenteric artery is rare, it has to be considered in the differential diagnosis of persisting abdominal problems of unknown origin. This is especially true for patients with a predisposing history such as previous or existing endocarditis, sepsis, arteriosclerosis and hypertension. Because of the possibility of rupture followed by life threating bleeding an adequate diagnostic step such as arteriography has to be considered finally.

  12. Aneurysm of the superior mesenteric artery

    International Nuclear Information System (INIS)

    Gebauer, A.

    1984-01-01

    This is a report about 4 patients with aneurysms of the superior mesenteric artery of arteriosclerotic, mycotic and probably congenital etiology together with a review of the literature as to the etiology, diagnostic possibilities and therapy. Arteriography is the method of choice even though a diagnosis may be possible by sonography or CT in special cases. Even though an aneurysm of the superior mesenteric artery is rare, it has to be considered in the differential diagnosis of persisting abdominal problems of unknown origin. This is especially true for patients with a predisposing history such as previous or existing endocarditis, sepsis, arteriosclerosis and hypertension. Because of the possibility of rupture followed by life threating bleeding an adequate diagnostic step such as arteriography has to be considered finally. (orig.) [de

  13. Superior cold recycling : The score project

    OpenAIRE

    LESUEUR, D; POTTI, JJ; SOUTHWELL, C; WALTER, J; CRUZ, M; DELFOSSE, F; ECKMANN, B; FIEDLER, J; RACEK, I; SIMONSSON, B; PLACIN, F; SERRANO, J; RUIZ, A; KALAAJI, A; ATTANE, P

    2004-01-01

    In order to develop Environmentally Friendly Construction Technologies (EFCT) and as part of the 5th Framework Program of Research and Development, the European Community has decided to finance a research project on cold recycling, entitled SCORE "Superior COld REcycling based on benefits of bituminous microemulsions and foamed bitumen. A EFCT system for the rehabilitation and the maintenance of roads". This research project gathers organizations from all over Europe, from industrial partners...

  14. Reperfusion hemorrhage following superior mesenteric artery stenting.

    LENUS (Irish Health Repository)

    Moore, Michael

    2012-02-03

    Percutaneous transluminal angioplasty and stent placement is now an established treatment option for chronic mesenteric ischemia and is associated with low mortality and morbidity rates. We present a case of reperfusion hemorrhage complicating endovascular repair of superior mesenteric artery stenosis. Although a recognized complication following repair of carotid stenosis, hemorrhage has not previously been reported following mesenteric endovascular reperfusion. We describe both spontaneous cessation of bleeding and treatment with coil embolization.

  15. [Neuromolecular mechanism of the superiority illusion].

    Science.gov (United States)

    Yamada, Makiko

    2014-01-01

    The majority of individuals evaluate themselves as above average. This is a cognitive bias called "the superiority illusion". This illusory self-evaluation helps us to have hopes for the future, and has been central to the process of human evolution. Possessing this illusion is also important for mental health, as depressed people appear to have a more realistic perception of themselves, dubbed "depressive realism". Our recent study revealed the spontaneous brain activity and central dopaminergic neurotransmission that generate this illusion, using resting-state fMRI and PET. A functional connectivity between the frontal cortex and striatum, regulated by inhibitory dopaminergic neurotransmission, determines individual levels of the superiority illusion. We further revealed that blocking the dopamine transporter, which enhanced the level of dopamine, increased the degree of the superiority illusion. These findings suggest that dopamine acts on striatal dopamine receptors to suppress fronto-striatal functional connectivity, leading to disinhibited, heuristic, approaches to positive self-evaluation. These findings help us to understand how this key aspect of the human mind is biologically determined, and will suggest treatments for depressive symptoms by targeting specific molecules and neural circuits.

  16. Eutrophication monitoring for Lake Superior's Chequamegon ...

    Science.gov (United States)

    A priority for the Lake Superior CSMI was to identify susceptible nearshore eutrophication areas. We developed an integrated sampling design to collect baseline data for Lake Superior’s Chequamegon Bay to understand how nearshore physical processes and tributary loading relate to observed chlorophyll concentrations. Sampling included ship-based water samples combined with vertical CTD casts, continuous in situ towing and data collected from an autonomous underwater glider. Sampling was conducted during June, July and September. The glider collected regional data as part of three extended missions in Lake Superior over the same periods. During the study, two significant storm events impacted the western end of Lake Superior; the first occurred during July 11-12, with 8-10 inches of rain in 24hrs, and the second on July 21 with winds in excess of 161 km/h. Using GIS software, we organized these diverse temporal data sets along a continuous time line with temporally coincident Modis Satellite data to visualize surface sediment plumes in relation to water quality measurements. Preliminary results suggest that both events impacted regional water quality, and that nearshore physical forces (upwelling and currents) influenced the spatial variability. Results comparing in situ measures with remotely sensed images will be discussed. not applicable

  17. Waldenstrom macroglobulinemia involving the superior rectus muscle

    Directory of Open Access Journals (Sweden)

    J.B. Hellman

    2018-06-01

    Full Text Available Purpose: We present the first reported case of Waldenstrom macroglobulinemia in the right superior rectus causing diplopia. Observations: A 72-year-old man with a 6-month history of untreated asymptomatic Waldenstrom macroglobulinemia presented with 2 years of diagonal binocular diplopia that was previously thought to be due to ocular myasthenia gravis. Examination showed mild right proptosis and right hypotropia, and MRI revealed a focal lesion of the right superior rectus muscle. Orbital biopsy was performed, and histopathology showed lymphoplasmacytic infiltration among the skeletal muscle fibers of the rectus muscle. Immunostaining confirmed a B-cell preponderance, along with more extensive staining for IgM than IgG, and in situ hybridization confirmed lambda restriction. These findings corresponded with those of his previous bone marrow biopsy, confirming Waldenstrom macroglobulinemia as the etiology for the extraocular muscle mass. Conclusions and Importance: Lymphoma of an extraocular muscle is a rare manifestation of orbital lymphoma, and the tumors are usually mucosa-associated lymphoid tissue (MALT lymphomas (i.e. extranodal marginal zone lymphomas. There are 4 previous reports of lymphoplasmacytic lymphoma of an extraocular muscle; however this is the first reported case of such a lesion in a patient with concurrent Waldenstrom macroglobulinemia at the time of diagnosis. Keywords: Waldenstrom's macroglobulinemia, Lymphoma, Superior rectus, Diplopia

  18. Burlington Northern Taconite Transshipment Facility, Duluth-Superior Harbor, Superior Wisconsin. Environmental Assessment Report.

    Science.gov (United States)

    1975-03-01

    the Federal Government declared the Duluth- Superior area to be economically depressed . The reason given was the "consistant and chronic unemployment...include dogwood, sumac, arrowwood, blueberry, highbush cranberry , elderberry, wild grape, buttonbrush, snowberry and partridgeberry. Aquatic and...water for the proposed greenbelt areas and as dust sup- pression spray. 10.003 The depressed economy of the Duluth-Superior area would benefit by the

  19. Superior mesenteric artery compression syndrome - case report

    Directory of Open Access Journals (Sweden)

    Paulo Rocha França Neto

    2011-12-01

    Full Text Available Superior mesenteric artery syndrome is an entity generally caused by the loss of the intervening mesenteric fat pad, resulting in compression of the third portion of the duodenum by the superior mesenteric artery. This article reports the case of a patient with irremovable metastatic adenocarcinoma in the sigmoid colon, that evolved with intense vomiting. Intestinal transit was carried out, which showed important gastric dilation extended until the third portion of the duodenum, compatible with superior mesenteric artery syndrome. Considering the patient's nutritional condition, the medical team opted for the conservative treatment. Four months after the surgery and conservative measures, the patient did not present vomiting after eating, maintaining previous weight. Superior mesenteric artery syndrome is uncommon and can have unspecific symptoms. Thus, high suspicion is required for the appropriate clinical adjustment. A barium examination is required to make the diagnosis. The treatment can initially require gastric decompression and hydration, besides reversal of weight loss through adequate nutrition. Surgery should be adopted only in case of clinical treatment failure.A síndrome da artéria mesentérica superior é uma entidade clínica causada geralmente pela perda do tecido adiposo mesentérico, resultando na compressão da terceira porção do duodeno pela artéria mesentérica superior. Esse artigo relata o caso clínico de uma paciente portadora de adenocarcinoma de cólon sigmoide metastático irressecável, que evoluiu com vômitos incoercíveis. Realizou-se, então, trânsito intestinal que evidenciou dilatação gástrica importante, que se prolongava até a terceira porção duodenal, quadro radiológico compatível com pinçamento da artéria mesentérica superior. Diante da condição nutricional da paciente, foi optado por iniciar medidas conservadoras (porções alimentares pequenas e mais frequentes, além de dec

  20. Superior labrum anterior-to-posterior tear.

    Science.gov (United States)

    Sum, Jonathan C; Omid, Reza

    2012-12-01

    The patient was a 25-year-old male college student with a chief complaint of right shoulder pain. The patient was initially diagnosed with bicipital tendinitis by his physician and had been treated for 4 weeks by a physical therapist. However, his symptoms did not improve and he was unable to return to his preinjury activity levels, so he sought the services of another physical therapist for a second opinion. Due to concern for a labrum tear, the physical therapist referred the patient to an orthopaedic surgeon. Magnetic resonance arthrography revealed findings consistent with a superior labrum anterior-to-posterior tear.

  1. Ultrasound Detection of Superior Vena Cava Thrombus

    Directory of Open Access Journals (Sweden)

    Aaron Birch

    2014-09-01

    Full Text Available Superior vena cava (SVC syndrome is most commonly the insidious result of decreased vascular flow through the SVC due to malignancy, spontaneous thrombus, infections, and iatrogenic etiologies. Clinical suspicion usually leads to computed tomography to confirm the diagnosis. However, when a patient in respiratory distress requires emergent airway management, travel outside the emergency department is not ideal. With the growing implementation of point-of-care ultrasound (POCUS, clinicians may make critical diagnoses rapidly and safely. We present a case of SVC syndrome due to extensive thrombosis of the deep venous system cephalad to the SVC diagnosed by POCUS. [West J Emerg Med. 2014;15(6:715-718

  2. Superior Venacava Thrombus-A Case Report

    Directory of Open Access Journals (Sweden)

    Bijay Sah

    2016-03-01

    Full Text Available Superior venacava (SVC thrombus is a condition requiring immediate diagnosis and treatment. SVC thrombus causes obstruction of blood flow through the SVC resulting in severe decrease in venous return from the head, neck and upper extremity to the heart. The presenting symptoms of SVC obstruction include headache, hoarseness of voice, dyspnea, and laryngeal edema, dizziness, swelling of face, neck, and upper extremity. We hereby present a case of SVC thrombus who presented to the casualty department of COMS-TH with features of SVC syndrome which was diagnosed and managed promptly.JCMS Nepal. 2016;12(1:33-5.

  3. Spontaneous Dissection of the Superior Mesenteric Artery

    International Nuclear Information System (INIS)

    Sheldon, Patrick J.; Esther, James B.; Sheldon, Elana L.; Sparks, Steven R.; Brophy, David P.; Oglevie, Steven B.

    2001-01-01

    Spontaneous dissection of the superior mesenteric artery (SMA) is a rare occurrence, especially when not associated with aortic dissection. Currently, only 28 cases appear to have been reported. Due to the scarcity of cases in the literature, the natural history of isolated, spontaneous SMA dissection is unclear. CT has been reported to be useful for the initial diagnosis of SMA dissection [2-5]. We present two recent cases of spontaneous SMA dissection in which enhanced spiral CT was instrumental in following the disease process and guiding clinical decision making

  4. Acute Bilateral Superior Branch Vestibular Neuropathy

    Directory of Open Access Journals (Sweden)

    Dario A. Yacovino

    2018-05-01

    Full Text Available The rapid onset of a bilateral vestibular hypofunction (BVH is often attributed to vestibular ototoxicity. However, without any prior exposure to ototoxins, the idiopathic form of BVH is most common. Although sequential bilateral vestibular neuritis (VN is described as a cause of BVH, clinical evidence for simultaneous and acute onset bilateral VN is unknown. We describe a patient with an acute onset of severe gait ataxia and oscillopsia with features compatible with acute BVH putatively due to a bilateral VN, which we serially evaluated with clinical and laboratory vestibular function testing over the course of 1 year. Initially, bilateral superior and horizontal semicircular canals and bilateral utricles were impaired, consistent with damage to both superior branches of each vestibular nerve. Hearing was spared. Only modest results were obtained following 6 months of vestibular rehabilitation. At a 1-year follow-up, only the utricular function of one side recovered. This case is the first evidence supporting an acute presentation of bilateral VN as a cause for BVH, which would not have been observed without critical assessment of each of the 10 vestibular end organs.

  5. Premissas para o Ensino Superior do Design

    Directory of Open Access Journals (Sweden)

    André Luis Marques da Silveira

    2016-12-01

    Full Text Available Este artigo aborda a temática da Educação Superior e objetivo identificar premissas para o Ensino em Design no Brasil. Para tanto, efetua um estudo dos conteúdos das comunicações da área em periódicos e livros quanto ao assunto. O método de investigação utilizado foi a análise de conteúdo e observou as seguintes etapas de investigação: registro de dados, interpretação inferencial e categorização. Num primeiro momento, identifica a frequência do aparecimento de índices lexicais quanto ao relato de problemas no processo de Ensino-aprendizagem do Design e as proposições para o seu enfrentamento. Procede uma interpretação inferencial destes dados e, por fim, propõe como resultado, um conjunto de doze premissas que devem ser observadas quanto ao Ensino Superior em Design, a saber: 1 Incentivar o empreendedorismo; 2 Nivelar a Formação; 3 Desenvolver estrategistas; 4 Pensar a ética na atuação profissional; 5 Educar para o social; 6 Valorizar os ideias humanistas; 7 Repensar as estruturas acadêmicas; 8 Focar na aprendizagem baseada em problemas; 9 Aceitar os novos paradigmas; 10 Fomentar o pensamento crítico reflexivo; 11 Estimular a transdisciplinaridade; 12 Focar nas economias emergentes.

  6. Tratamento da síndrome da veia cava superior Treatment of superior vena cava syndrome

    Directory of Open Access Journals (Sweden)

    Luís Marcelo Inaco Cirino

    2005-12-01

    Full Text Available A veia cava superior é formada pela união das duas veias inominadas, direita e esquerda, e localiza-se no mediastino médio, à direita da artéria aorta e anteriormente à traquéia. A síndrome da veia cava superior representa um conjunto de sinais (dilatação das veias do pescoço, pletora facial, edema de membros superiores, cianose e sintomas (cefaléia, dispnéia, tosse, edema de membro superior, ortopnéia e disfagia decorrentes da obstrução do fluxo sanguíneo através da veia cava superior em direção ao átrio direito. A obstrução pode ser causada por compressão extrínseca, invasão tumoral, trombose ou por dificuldade do retorno venoso ao coração secundária a doenças intra-atriais ou intraluminais. Aproximadamente 73% a 97% dos casos de síndrome da veia cava superior ocorrem durante a evolução de processos malignos intratorácicos. A maioria dos pacientes com a síndrome secundária a neoplasias malignas é tratada sem necessidade de cirurgia, através de radioterapia ou quimioterapia, ou através da colocação de stents endoluminais. Quando a síndrome é de etiologia benigna, o tratamento é feito através de medidas clínicas (anticoagulação, elevação da cabeça, etc. ou, em casos refratários, através de angioplastia, colocação de stents endoluminais e cirurgia.The superior vena cava is formed by the union of the right and left brachiocephalic veins. It is located in the middle mediastinum, to the right of the aorta and anterior to the trachea. Superior vena cava syndrome consists of a group of signs (dilation of the veins in the neck, facial swelling, edema of the upper limbs, and cyanosis and symptoms (headache, dyspnea, cough, orthopnea and dysphagia caused by the obstruction of blood flow through the superior vena cava to the right atrium. This obstruction can be caused by extrinsic compression, tumor invasion or thrombosis. Such obstruction may also occur as a result of insufficient venous return

  7. Air Power's First Among Equals: Why Air Superiority Still Matters

    National Research Council Canada - National Science Library

    Slawson, Andrew T

    2008-01-01

    .... History is replete with examples of successful or failed air superiority campaigns. This paper details air superiority's role in both the Battle of Britain, and the 1967 Six Day War's Operation MOKED...

  8. Superior Canal Dehiscence Syndrome Affecting 3 Families.

    Science.gov (United States)

    Heidenreich, Katherine D; Kileny, Paul R; Ahmed, Sameer; El-Kashlan, Hussam K; Melendez, Tori L; Basura, Gregory J; Lesperance, Marci M

    2017-07-01

    Superior canal dehiscence syndrome (SCDS) is an increasingly recognized cause of hearing loss and vestibular symptoms, but the etiology of this condition remains unknown. To describe 7 cases of SCDS across 3 families. This retrospective case series included 7 patients from 3 different families treated at a neurotology clinic at a tertiary academic medical center from 2010 to 2014. Patients were referred by other otolaryngologists or were self-referred. Each patient demonstrated unilateral or bilateral SCDS or near dehiscence. Clinical evaluation involved body mass index calculation, audiometry, cervical vestibular evoked myogenic potential testing, electrocochleography, and multiplanar computed tomographic (CT) scan of the temporal bones. Zygosity testing was performed on twin siblings. The diagnosis of SCDS was made if bone was absent over the superior semicircular canal on 2 consecutive CT images, in addition to 1 physiologic sign consistent with labyrinthine dehiscence. Near dehiscence was defined as absent bone on only 1 CT image but with symptoms and at least 1 physiologic sign of labyrinthine dehiscence. A total of 7 patients (5 female and 2 male; age range, 8-49 years) from 3 families underwent evaluation. Family A consisted of 3 adult first-degree relatives, of whom 2 were diagnosed with SCDS and 1 with near dehiscence. Family B included a mother and her child, both of whom were diagnosed with unilateral SCDS. Family C consisted of adult monozygotic twins, each of whom was diagnosed with unilateral SCDS. For all cases, dehiscence was located at the arcuate eminence. Obesity alone did not explain the occurrence of SCDS because 5 of the 7 cases had a body mass index (calculated as weight in kilograms divided by height in meters squared) less than 30.0. Superior canal dehiscence syndrome is a rare, often unrecognized condition. This report of 3 multiplex families with SCDS provides evidence in support of a potential genetic contribution to the etiology

  9. Radiotherapy of superior vena cava syndrome

    International Nuclear Information System (INIS)

    Kawanami, Shoko; Imada, Hajime; Terashima, Hiromi; Nakata, Hajime

    1996-01-01

    The records of 38 patients with superior vena cava syndrome (SVC syndrome) due to malignancy and who received radiation therapy were retrospectively reviewed. The majority were lung cancers, constituting 28 of the 38 cases (73.7%). All patients were treated with conventional radiation doses ranging from 20 to 70 Gy and good symptomatic response was observed in 31 cases (81.6% ). The response appeared within 1.7±0.9 weeks on average (3 days-4 weeks;, and performance status also improved in 50% of the patients. The median survival was 6.6 months. Long term survivors were seen mostly in patients with thymoma, and only one patient ever showed a recurrence of SVC syndrome. We conclude that radiotherapy can be an effective therapeutic modality for SVC syndrome and that it improves the quality of life in most patients. (author)

  10. CT findings of superior vena cava syndrome

    Energy Technology Data Exchange (ETDEWEB)

    Lim, Jun; Lee, Jae Mun; Kim, Choon Yul; Bahk, Yong Whee [Catholic Medical College, Seoul (Korea, Republic of)

    1986-10-15

    Since early 1980's high resolution CT has been used for detection of intrathoracic pathologic condition such as superior vena cava syndrome. Authors retrospectively analysed CT findings of 18 cases of proven SVC syndrome. The results were as follows: 1. The mean age was 50-year-old, and 14 cases were male. 2. Of 18 cases of SVC syndrome, 8 cases had confirmed to be lung cancers, malignant thymoma and teratoma were respectively each 2 cases, and malignant lymphoma, mediastinal abscess, thyroid adenoma and metastatic tumor were 1 case. 3. CT findings were A. Abnormal SVC consisted of compression with displacement (44.4%), intraluminal thrombus (27.8%), and encasement (27.8%). B. The collateral pathways were the azygos-homozygous (88.8%), vertebral (50%), internal mammary (44.4%), and lateral thoracic route (33.3%)

  11. CT findings of superior vena cava syndrome

    International Nuclear Information System (INIS)

    Lim, Jun; Lee, Jae Mun; Kim, Choon Yul; Bahk, Yong Whee

    1986-01-01

    Since early 1980's high resolution CT has been used for detection of intrathoracic pathologic condition such as superior vena cava syndrome. Authors retrospectively analysed CT findings of 18 cases of proven SVC syndrome. The results were as follows: 1. The mean age was 50-year-old, and 14 cases were male. 2. Of 18 cases of SVC syndrome, 8 cases had confirmed to be lung cancers, malignant thymoma and teratoma were respectively each 2 cases, and malignant lymphoma, mediastinal abscess, thyroid adenoma and metastatic tumor were 1 case. 3. CT findings were A. Abnormal SVC consisted of compression with displacement (44.4%), intraluminal thrombus (27.8%), and encasement (27.8%). B. The collateral pathways were the azygos-homozygous (88.8%), vertebral (50%), internal mammary (44.4%), and lateral thoracic route (33.3%).

  12. Have the Guests Perceived Superior Value?

    Directory of Open Access Journals (Sweden)

    Levyda Levyda

    2017-11-01

    Full Text Available This research aimed to describe guests’ perceived value by using a multidimensional approach. From previous research, guests’ perceived value consisted of some functional value, emotional value, and social value. Based on guest experience, and functional value consisted of physical evidence, guest room, food and beverage, hotel staff, and price. This research was conducted in four-star hotels in Jakarta. The respondents were the guests who had stayed in four-star hotels. The number of the respondent was 405. The data were obtained by using self-administered questionnaires. This research shows that guests have not perceived superior value. Some of the values and the necessary efforts need to be improved.

  13. Superiority: China Mobile in the competition

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    The market share between China Mobile and China Unicom has stabilized since 2002.It is found that China Mobile has the superiority in the competition, for example, the scissors movement between its revenue and cost indicates that it has a strong profit generating ability and there is enough room for it to reduce the price.The ratio between its price (marginal income) and marginal cost indicates that there is a very distant limit for it to reduce the price.Its demand is obviously flexible with the price, but it does not use the price weapon abundantly.The reason for the stabilization of the market is that China Mobile withdrew from the competition.

  14. Superior Mesenteric Artery Syndrome or Wilkie Syndrome

    International Nuclear Information System (INIS)

    Castano Llano, Rodrigo; Chams Anturi, Abraham; Arango Vargas, Paula

    2009-01-01

    We described three cases of superior mesenteric artery (SMA) syndrome, also known as Wilkie's syndrome, chronic duodenal ileus, or cast syndrome. This syndrome occurs when the third portion of the duodenum is compressed between the SMA and the aorta. The major risk factors for development of SMA syndrome are rapid weight loss and surgical correction of spinal deformities. The clinical presentation of SMA syndrome is variable and nonspecific, including nausea, vomiting, abdominal pain, and weight loss. The diagnosis is based on endoscopic, radiographic and tomographic findings of duodenal compression by the SMA. The treatment of SMA syndrome is aimed at the precipitating factor, which usually is related to weight loss. Therefore, conservative therapy with nutritional supplementation is the initial approach, and surgery is reserved for those who do not respond to nutritional therapy.

  15. Exploring the word superiority effect using TVA

    DEFF Research Database (Denmark)

    Starrfelt, Randi

    Words are made of letters, and yet sometimes it is easier to identify a word than a single letter. This word superiority effect (WSE) has been observed when written stimuli are presented very briefly or degraded by visual noise. It is unclear, however, if this is due to a lower threshold for perc...... simultaneously we find a different pattern: In a whole report experiment with six stimuli (letters or words), letters are perceived more easily than words, and this is reflected both in perceptual processing speed and short term memory capacity....... for perception of words, or a higher speed of processing for words than letters. We have investigated the WSE using methods based on a Theory of Visual Attention. In an experiment using single stimuli (words or letters) presented centrally, we show that the classical WSE is specifically reflected in perceptual...

  16. Superior vena thrombosis with peripartum dilated cardiomyopathy

    International Nuclear Information System (INIS)

    Munir, R.; Hussain, S.; Kayani, A.M.

    2014-01-01

    A 30 years multiparous female with history of emergency caesarean section 10 days back was referred to us with cough, severe breathlessness at rest, orthopnea with pain in neck and arms. Clinical examination revealed signs of heart failure. Echocardiography showed ejection fraction of 15%, with no right ventricular strain. A diagnosis of peripartum cardiomyopathy was made. Doppler ultrasound of neck veins showed bilateral internal jugular vein thrombosis. Subsequent multislice CT examination showed thrombosis of superior vena cava and both internal jugular veins (with collateral formation) and pulmonary embolism. There were no mediastinal abnormalities on the CT scan. Her thrombophilia screen and CT scan brain was normal. She was managed in collaboration with cardiologist. Following treatment with subcutaneous enoxaparin therapy and warfarin her symptoms of upper limb pain improved. She responded very well to medical therapy for heart failure with marked improvement of NYHA functional class. (author)

  17. Superior vena cava syndrome in hemodialysis patient

    Directory of Open Access Journals (Sweden)

    Azeb Molhem

    2011-01-01

    Full Text Available Obstruction of blood flow in the superior vena cava (SVC results in symptoms and signs of SVC syndrome. SVC obstruction can be caused either by invasion or external compression of the SVC by contagious pathologic processes involving the right lung, lymph nodes, and other mediastinal structures, or by thrombosis of blood within the SVC. Occasionally, both mechanisms co-exist. We hereby report a case of a 28-year-old male, Saudi patient who was diagnosed with end-stage renal disease and was maintained on regular hemodiaysis via right jugular vein dual lumen catheter for ten months. Three years later, the patient presented with signs and symptoms suggestive of SVC obstruction that was successfully managed with SVC stenting.

  18. Lightning activity during the 1999 Superior derecho

    Science.gov (United States)

    Price, Colin G.; Murphy, Brian P.

    2002-12-01

    On 4 July 1999, a severe convective windstorm, known as a derecho, caused extensive damage to forested regions along the United States/Canada border, west of Lake Superior. There were 665,000 acres of forest destroyed in the Boundary Waters Canoe Area Wilderness (BWCAW) in Minnesota and Quetico Provincial Park in Canada, with approximately 12.5 million trees blown down. This storm resulted in additional severe weather before and after the occurrence of the derecho, with continuous cloud-to-ground (CG) lightning occurring for more than 34 hours during its path across North America. At the time of the derecho the percentage of positive cloud-to-ground (+CG) lightning measured by the Canadian Lightning Detection Network (CLDN) was greater than 70% for more than three hours, with peak values reaching 97% positive CG lightning. Such high ratios of +CG are rare, and may be useful indicators of severe weather.

  19. Superiority of Bessel function over Zernicke polynomial as base ...

    Indian Academy of Sciences (India)

    Abstract. Here we describe the superiority of Bessel function as base function for radial expan- sion over Zernicke polynomial in the tomographic reconstruction technique. The causes for the superiority have been described in detail. The superiority has been shown both with simulated data for Kadomtsev's model for ...

  20. Superior glenoid inclination and rotator cuff tears.

    Science.gov (United States)

    Chalmers, Peter N; Beck, Lindsay; Granger, Erin; Henninger, Heath; Tashjian, Robert Z

    2018-03-23

    The objectives of this study were to determine whether glenoid inclination (1) could be measured accurately on magnetic resonance imaging (MRI) using computed tomography (CT) as a gold standard, (2) could be measured reliably on MRI, and (3) whether it differed between patients with rotator cuff tears and age-matched controls without evidence of rotator cuff tears or glenohumeral osteoarthritis. In this comparative retrospective radiographic study, we measured glenoid inclination on T1 coronal MRI corrected into the plane of the scapula. We determined accuracy by comparison with CT and inter-rater reliability. We compared glenoid inclination between patients with full-thickness rotator cuff tears and patients aged >50 years without evidence of a rotator cuff tear or glenohumeral arthritis. An a priori power analysis determined adequate power to detect a 2° difference in glenoid inclination. (1) In a validation cohort of 37 patients with MRI and CT, the intraclass correlation coefficient was 0.877, with a mean difference of 0° (95% confidence interval, -1° to 1°). (2) For MRI inclination, the inter-rater intraclass correlation coefficient was 0.911. (3) Superior glenoid inclination was 2° higher (range, 1°-4°, P rotator cuff tear group of 192 patients than in the control cohort of 107 patients. Glenoid inclination can be accurately and reliably measured on MRI. Although superior glenoid inclination is statistically greater in those with rotator cuff tears than in patients of similar age without rotator cuff tears or glenohumeral arthritis, the difference is likely below clinical significance. Copyright © 2018 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.

  1. Kompetisi Stasiun Televisi Swasta Nasional Berdasarkan Superiority Direction dan Superiority Magnitude

    Directory of Open Access Journals (Sweden)

    Anastasia Winanti Riesardhy

    2013-11-01

    Full Text Available Abstract: Uses and gratification theory is employed particularly as the teoritical frame of the research to examine the extent to which ten national television stations compete to satisfy Indonesian audiences. In particular, two main concepts of that theory namely audiences “gratification sought and gratifications obtained, are broken down and counted based on superiority direction and superiority magnitude. In general, the findings show that those televisions have satisfied their audiences, although in terms of gratifications to dispersal motives, they haven’t satisfied as much as it was expected. Significant competition occurs between TRANSTV and TRANS7, RCTI and SCTV, and TVONE and METROTV. TVONE become the most satisfiyng television station. Abstrak: Teori Uses & Gratification menjadi dasar penelitian ini untuk mengukur bagaimana kompetisi yang terjadi di antara sepuluh stasiun televisi yang bersiaran secara nasional di Indonesia. Aplikasi dari teori tersebut dimunculkan dalam konsep kepuasan yang diharapkan dan kepuasan yang diperoleh ketika menonton acara televisi dan didasarkan pada penghitungan superiority direction dan superiority magnitude. Sepuluh stasiun televisi yang diteliti telah dapat memuaskan audiensnya, meskipun untuk kepuasan atas motif pengalihan masih belum dapat melampaui kepuasan yang diharapkan. Kompetisi yang signifikan terjadi antara TRANSTV dengan TRANS7, RCTI dengan SCTV serta TVONE dengan METROTV. TVONE menjadi stasiun televisi yang menduduki peringkat pertama dalam memberikan kepuasan tertinggi kepada audiens.

  2. Liquid nitrogen cryotherapy of superior limbic keratoconjunctivitis.

    Science.gov (United States)

    Fraunfelder, Frederick W

    2009-02-01

    To evaluate the effects of liquid nitrogen cryotherapy on superior limbic keratoconjunctivitis (SLK). Interventional case series. In this clinical practice case series, the effects of liquid nitrogen cryotherapy on SLK were observed. Liquid nitrogen cryotherapy was performed using a Brymill E tip spray (0.013-inch aperture) with a double freeze-thaw technique. All subjects were outpatients who had local anesthesia with a single drop of topical proparacaine. The main outcome measure was the resolution of the disease process after treatment. Four female patients (average age, 64 +/- 13 years) and seven eyes with SLK were treated with liquid nitrogen cryotherapy. Resolution of signs and symptoms occurred within two weeks. Disease recurred in two patients and three of seven eyes, although repeat cryotherapy eradicated SLK in all cases. The repeat cryotherapy was performed at three months postoperatively. There were no adverse ocular events. Liquid nitrogen cryotherapy appears to be an effective alternative treatment for SLK as all subjects studied achieved long-term cures. Repeat cryotherapy may be necessary in some instances and may be performed three months after the first treatment.

  3. Lake Superior Coastal Wetland Fish Assemblages and ...

    Science.gov (United States)

    The role of the coastal margin and the watershed context in defining the ecology of even very large lakes is increasingly being recognized and examined. Coastal wetlands are both important contributors to the biodiversity and productivity of large lakes and important mediators of the lake-basin connection. We explored wetland-watershed connections and their relationship to wetland function and condition using data collected from 37 Lake Superior wetlands spanning a substantial geographic and geomorphic gradient. While none of these wetlands are particularly disturbed, there were nevertheless clear relationships between watershed landuse and wetland habitat and biota, and these varied consistently across wetland type categories that reflected the strength of connection to the watershed. For example, water clarity and vegetation structure complexity declined with decreasing percent natural land cover, and these effects were strongest in riverine wetlands (having generally large watersheds and tributary-dominated hydrology) and weakest in lagoon wetlands (having generally small watersheds and lake-dominate hydrology). Fish abundance and species richness both increased with decreasing percent natural land cover while species diversity decreased, and again the effect was strongest in riverine wetlands. Lagoonal wetlands, which lack any substantial tributary, consistently harbored the fewest species of fish and a composition different from the more watershed-lin

  4. The Business Value of Superior Energy Performance

    Energy Technology Data Exchange (ETDEWEB)

    McKane, Aimee; Scheihing, Paul; Evans, Tracy; Glatt, Sandy; Meffert, William

    2015-08-04

    Industrial facilities participating in the U.S. Department of Energy’s (US DOE) Superior Energy Performance (SEP) program are finding that it provides them with significant business value. This value starts with the implementation of ISO 50001-Energy management system standard, which provides an internationally-relevant framework for integration of energy management into an organization’s business processes. The resulting structure emphasizes effective use of available data and supports continual improvement of energy performance. International relevance is particularly important for companies with a global presence or trading interests, providing them with access to supporting ISO standards and a growing body of certified companies representing the collective knowledge of communities of practice. This paper examines the business value of SEP, a voluntary program that builds on ISO 50001, inviting industry to demonstrate an even greater commitment through third-party verification of energy performance improvement to a specified level of achievement. Information from 28 facilities that have already achieved SEP certification will illustrate key findings concerning both the value and the challenges from SEP/ISO 50001 implementation. These include the facilities’ experience with implementation, internal and external value of third-party verification of energy performance improvement; attractive payback periods and the importance of SEP tools and guidance. US DOE is working to bring the program to scale, including the Enterprise-Wide Accelerator (SEP for multiple facilities in a company), the Ratepayer-Funded Program Accelerator (supporting tools for utilities and program administrators to include SEP in their program offerings), and expansion of the program to other sectors and industry supply chains.

  5. Physiological models of the lateral superior olive.

    Directory of Open Access Journals (Sweden)

    Go Ashida

    2017-12-01

    Full Text Available In computational biology, modeling is a fundamental tool for formulating, analyzing and predicting complex phenomena. Most neuron models, however, are designed to reproduce certain small sets of empirical data. Hence their outcome is usually not compatible or comparable with other models or datasets, making it unclear how widely applicable such models are. In this study, we investigate these aspects of modeling, namely credibility and generalizability, with a specific focus on auditory neurons involved in the localization of sound sources. The primary cues for binaural sound localization are comprised of interaural time and level differences (ITD/ILD, which are the timing and intensity differences of the sound waves arriving at the two ears. The lateral superior olive (LSO in the auditory brainstem is one of the locations where such acoustic information is first computed. An LSO neuron receives temporally structured excitatory and inhibitory synaptic inputs that are driven by ipsi- and contralateral sound stimuli, respectively, and changes its spike rate according to binaural acoustic differences. Here we examine seven contemporary models of LSO neurons with different levels of biophysical complexity, from predominantly functional ones ('shot-noise' models to those with more detailed physiological components (variations of integrate-and-fire and Hodgkin-Huxley-type. These models, calibrated to reproduce known monaural and binaural characteristics of LSO, generate largely similar results to each other in simulating ITD and ILD coding. Our comparisons of physiological detail, computational efficiency, predictive performances, and further expandability of the models demonstrate (1 that the simplistic, functional LSO models are suitable for applications where low computational costs and mathematical transparency are needed, (2 that more complex models with detailed membrane potential dynamics are necessary for simulation studies where sub

  6. Absent right superior caval vein in situs solitus

    DEFF Research Database (Denmark)

    Lytzen, Rebekka; Sundberg, Karin; Vejlstrup, Niels

    2015-01-01

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

  7. The CT appearance of the superior intercostal veins

    International Nuclear Information System (INIS)

    Lund, G.

    1982-01-01

    The CT appearance of the superior intercostal veins is described. The veins are more frequently seen on the right side. The right superior intercostal vein should not be misinterpreted as a paraspinal mass when it is large or bulges into the contour of the right lung. A case of stenosis of the left brachiocephalic vein is shown, where the left superior intercostal vein serves as a collateral. (orig.)

  8. Superior Mesenteric Artery Syndrome: An Infrequent Complication of Scoliosis Surgery

    Directory of Open Access Journals (Sweden)

    Metin Keskin

    2014-01-01

    Full Text Available Superior mesenteric artery syndrome is a rare condition that causes a proximal small intestinal obstruction due to contraction of the angle between the superior mesenteric artery and the aorta. Scoliosis surgery is one of the 15 reasons for superior mesenteric artery syndrome, which can present with acute or chronic manifestations. Although conservative treatment is usually possible, surgical treatment is required in certain cases that cannot be treated using conservative methods. In this paper, we describe a patient who developed superior mesenteric artery syndrome after scoliosis surgery and was treated with duodenojejunostomy due to failure and complications of conservative treatment.

  9. Information Superiority: Outsourcing an Air Force Core Competency?

    National Research Council Canada - National Science Library

    McTerman, Hugh

    1997-01-01

    .... This thesis explores the perceived relationship between the core competency requirements for information superiority and the tasks defined for the Air Force communication, computer, and information career field...

  10. Squamous papillomas of the conjunctiva: A retrospective ...

    African Journals Online (AJOL)

    2011-02-14

    Feb 14, 2011 ... Four cases had a history of chemical injury (alkaline based – hair relaxer in a single case, acid based – wet cell car battery fluid ... its duration, possible associated etiological factors, history of trauma, HIV status, tumor size and ... reported by Sjö et al. in Copenhagen, Denmark.[5] The large number from that ...

  11. Superior sagittal sinus thrombosis: a rare complication of nephrotic syndrome.

    Directory of Open Access Journals (Sweden)

    Tullu M

    1999-10-01

    Full Text Available A two and half year-old-male child, known case of steroid responsive nephrotic syndrome presented with fever and vomiting of acute onset. He was diagnosed to have superior sagittal sinus thrombosis on a contrast computerised tomographic scan of brain. Recovery was complete without anticoagulant therapy. Superior sagittal sinus thrombosis is an extremely rare complication of nephrotic syndrome.

  12. Superior mesenteric artery syndrome: case report | Jani | East ...

    African Journals Online (AJOL)

    Superior Mesenteric Artery Syndrome (SMAS) is caused by trapping of the third part of the duodenum between Superior Mesenteric Artery (SMA) and aorta as result of narrowing of the angle between the two vessels due to acute loss of mesenteric fat which is secondary to rapid weight loss. A fifteen year old caucasian ...

  13. Aging and the Picture Superiority Effect in Recall.

    Science.gov (United States)

    Winograd, Eugene; And Others

    1982-01-01

    Compared verbal and visual encoding using the picture superiority effect. One experiment found an interaction between age and type of material. In other experiments, the picture superiority effect was found in both age groups with no interaction. Performing a semantic-orienting task had no effect on recall. (Author/RC)

  14. Superior dislocation hip with anterior column acetabular fracture ...

    African Journals Online (AJOL)

    Superior variety of anterior dislocation of the hip is a rare injury. Its occurrence with acetabular fractures has been documented infrequently. We report a case of superior dislocation of the hip with anterior column acetabular fracture. Open reduction of the hip and internal fixation of the fracture was carried out using a twin ...

  15. The Development of the Picture-Superiority Effect

    Science.gov (United States)

    Whitehouse, Andrew J. O.; Maybery, Murray T.; Durkin, Kevin

    2006-01-01

    When pictures and words are presented serially in an explicit memory task, recall of the pictures is superior. While this effect is well established in the adult population, little is known of the development of this picture-superiority effect in typical development. This task was administered to 80 participants from middle childhood to…

  16. 14 CFR 385.7 - Exercise of authority by superiors.

    Science.gov (United States)

    2010-01-01

    ... PROCEEDINGS) ORGANIZATION STAFF ASSIGNMENTS AND REVIEW OF ACTION UNDER ASSIGNMENTS General Provisions § 385.7 Exercise of authority by superiors. Any assignment of authority to a staff member other than the Chief... be made, severally, to each such staff member's respective superiors. In accordance with the...

  17. Fatal pericardial tamponade after superior vena cava stenting.

    NARCIS (Netherlands)

    Ploegmakers, M.J.M.; Rutten, M.J.C.M.

    2009-01-01

    We discuss a fatal complication of percutaneous superior vena cava (SVC) self-expandable stent placement in a patient with superior vena cava syndrome (SVCS). The SVCS was caused by a malignant mediastinal mass with total occlusion of the SVC. Twenty-four hours after the procedure, the patient died

  18. Superior vena cava obstruction caused by radiation induced venous fibrosis

    NARCIS (Netherlands)

    Van Putten, JWG; Schlosser, NJJ; Vujaskovic, Z; Van der Leest, AHD; Groen, HJM

    Superior vena cava syndrome is most often caused by lung carcinoma. Two cases are described in whom venous obstruction in the superior mediastinum was caused by local vascular fibrosis due to radiotherapy five and seven years earlier. The development of radiation injury to greater vessels is

  19. Síndrome de Deiscência de Canal Semicircular Superior Superior Canal Dehiscence Syndrome

    Directory of Open Access Journals (Sweden)

    Suzane da Cunha Ferreira

    2006-06-01

    Full Text Available A Síndrome de Deiscência de Canal Semicircular Superior (SDCSS, primeiramente descrita em 1998 por Minor et al., caracteriza-se por vertigem associada à presença de nistagmo, relacionados à exposição a estímulos sonoros intensos ou a modificações de pressão dentro da orelha média ou intracraniana. Disacusia, em sua maioria de padrão condutivo à audiometria tonal, também pode estar presente. Nesta revisão da literatura objetivou-se abordar a SDCSS, com seus principais sinais e sintomas, achados diagnósticos e tratamento, assim como enfatizar a importância de sua inclusão dentre as causas de vertigem, visto tratar-se de acometimento ainda pouco conhecido até mesmo entre especialistas. O diagnóstico correto, além de possibilitar seu tratamento, impede que abordagens diagnósticas e terapêuticas inapropriadas sejam realizadas.The Superior Canal Dehiscence Syndrome (SCDS was first reported by Minor at. Al. (1998, and has been characterized by vertigo and vertical-torsional eye movements related to loud sounds or stimuli that change middle ear or intracranial pressure. Hearing loss, for the most part with conductive patterns on audiometry, may be present in this syndrome. We performed a literature survey in order to to present symptoms, signs, diagnostic and therapeutic approaches to the SCDS, also aiming at stressing the great importance of including this syndrome among the tractable cause of vertigo. We should emphasize that this is a recent issue, still unknown by some specialists. The Correct SCDS diagnosis, besides enabling patient treatment, precludes misdiagnosis and inadequate therapeutic approaches.

  20. Right superior vena cava draining into the left atrium

    Energy Technology Data Exchange (ETDEWEB)

    Calcagni, Giulio; Sidi, Daniel; Bonnet, Damien [University Rene Descartes-Paris 5, Department of Paediatric Cardiology, Hopital Necker-Enfants Malades, Paris (France); Batisse, Alain [Institut de Puericulture et de Perinatalogie, Paris (France); Vouhe, Pascal [University Rene Descartes-Paris 5, Department of Paediatric Cardiac Surgery, Hopital Necker-Enfants Malades, Paris (France); Ou, Phalla [University Rene Descartes-Paris 5, Department of Paediatric Cardiology, Hopital Necker-Enfants Malades, Paris (France); University Rene Descartes-Paris 5, Department of Pediatric Radiology, Hopital Necker-Enfants Malades, Paris (France)

    2008-08-15

    The right superior vena cava draining into the left atrium is a rare malformation causing cyanosis and clubbing in patients in whom no other signs of congenital heart defect are present. Diagnosis may be difficult as cyanosis may be mild and the anomaly is not always easily detectable by echocardiography. For this reason we report a 13-month-old male in whom we confirmed the clinical and echocardiographic suspicion of anomalous drainage of the right superior vena cava using multidetector CT. This allowed successful surgical reconnection of the right superior vena cava to the right atrium. (orig.)

  1. Ruptured superior gluteal artery pseudoaneurysm with hemorrhagic shock: Case report

    Directory of Open Access Journals (Sweden)

    Kerem Seref Corbacioglu

    2016-03-01

    Full Text Available Pseudoaneurysm of the superior gluteal artery (SGA is very rare and the most common causes are blunt or penetrating pelvic traumas. Although pseudoaneurysm can be asymptomatic at the time of initial trauma, it can be symptomatic weeks, months, even years after initial trauma. We present a case of a ruptured superior gluteal artery pseudoaneurysm with hemorrhagic shock twenty days after a bomb injury in the Syria civil war. In addition, we review the anatomy of the SGA, clinical presentation and pitfalls of pseudoaneurysm, and imaging and treatment options. Keywords: Pseudoaneurysm, Superior gluteal artery, Pitfall, Angiography

  2. Right superior vena cava draining into the left atrium

    International Nuclear Information System (INIS)

    Calcagni, Giulio; Sidi, Daniel; Bonnet, Damien; Batisse, Alain; Vouhe, Pascal; Ou, Phalla

    2008-01-01

    The right superior vena cava draining into the left atrium is a rare malformation causing cyanosis and clubbing in patients in whom no other signs of congenital heart defect are present. Diagnosis may be difficult as cyanosis may be mild and the anomaly is not always easily detectable by echocardiography. For this reason we report a 13-month-old male in whom we confirmed the clinical and echocardiographic suspicion of anomalous drainage of the right superior vena cava using multidetector CT. This allowed successful surgical reconnection of the right superior vena cava to the right atrium. (orig.)

  3. Novel anammox bacteria and nitrogen loss from Lake Superior

    DEFF Research Database (Denmark)

    Crowe, Sean A.; Treusch, Alexander H.; Forth, Michael

    2017-01-01

    and diversity of anammox bacteria in the world's largest freshwater lake - Lake Superior. We found that anammox performed by previously undiscovered bacteria is an important contributor to sediment N2 production. We observed striking differences in the anammox bacterial populations found at different locations...... within Lake Superior and those described from other locations. Our data thus reveal that novel anammox bacteria underpin N-loss from Lake Superior, and if more broadly distributed across inland waters would play an important role in continental N-cycling and mitigation of fixed nitrogen transfer from...

  4. Noise management to achieve superiority in quantum information systems

    Science.gov (United States)

    Nemoto, Kae; Devitt, Simon; Munro, William J.

    2017-06-01

    Quantum information systems are expected to exhibit superiority compared with their classical counterparts. This superiority arises from the quantum coherences present in these quantum systems, which are obviously absent in classical ones. To exploit such quantum coherences, it is essential to control the phase information in the quantum state. The phase is analogue in nature, rather than binary. This makes quantum information technology fundamentally different from our classical digital information technology. In this paper, we analyse error sources and illustrate how these errors must be managed for the system to achieve the required fidelity and a quantum superiority. This article is part of the themed issue 'Quantum technology for the 21st century'.

  5. Chlamydia trachomatis in the conjunctiva of children living in three rural areas in Mexico Chlamydia trachomatis en la conjuntiva de niños de tres zonas rurales de México

    Directory of Open Access Journals (Sweden)

    Pablo Goldschmidt

    2007-07-01

    Full Text Available OBJECTIVES: Chlamydia trachomatis infections, in the context of extreme poverty, may trigger trachoma. Because the levels of C. trachomatis eye infections in Mexico are unknown, this study sought to determine if C. trachomatis was present in the conjunctiva of children living in three poor, rural areas of the country. METHODS: Clinical diagnosis of conjunctival follicles in children was conducted during the 2004 visual acuity assessment campaigns in rural areas of the states of Chiapas, Oaxaca, and Zacatecas. C. trachomatis detection was carried out by sampling the children with follicles and examining the specimens after Giemsa or microimmunofluorescence (MIF staining. RESULTS: A total of 941 children from 6 to 12 years of age were examined in 2004. Of the 484 in Chiapas, 30% were found to have follicles; of the 181 in Zacatecas, 22%; and of the 276 in Oaxaca, 42%. C. trachomatis was detected at levels ranging between 2% and 5%; positive by Giemsa in 4.5% of the children with follicles, and by MIF in 15.5%. CONCLUSIONS: Considering that the chlamydiae sampling procedures and detection methods used in this study were not the most sensitive, the results underestimate the chlamydial eye infections and represent a conservative assessment of a potential risk for preventable visual impairment. Because C. trachomatis was detected here at levels similar to those reported for low-endemic trachoma areas, health authorities should be prepared to implement appropriate measures should it be confirmed that the visual health of Mexico’s children is at risk.OBJETIVOS: En un contexto de pobreza extrema, la infección por Chlamydia trachomatis puede desencadenar el tracoma. Debido a que se desconocen los niveles de infección ocular con C. trachomatis en México, el objetivo de este estudio fue determinar la presencia de C. trachomatis en la conjuntiva de niños de tres zonas rurales pobres de México. MÉTODOS:El diagnóstico clínico de fol

  6. 2010 Great Lakes Restoration Initiative Bathymetric Lidar: Lake Superior

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The data contained in this file contain hydrographic and topographic data collected by the Fugro LADS Mk II system along the Lake Superior coast of Minnessota,...

  7. Sacroiliac joint injection using the posterior superior iliac spines as ...

    African Journals Online (AJOL)

    Limitations in the availability of such image guided techniques in health ... School of Medical Sciences, University of Science and Technology between 2006 and ... The needle position from the posterior superior iliac spine and its angle of ...

  8. Analysis of the Lake Superior Watershed Seasonal Snow Cover

    National Research Council Canada - National Science Library

    Daly, Steven F; Baldwin, Timothy B; Weyrick, Patricia

    2007-01-01

    Daily estimates of the snow water equivalent (SWE) distribution for the period from 1 December through 30 April for each winter season from 1979 80 through 2002 03 were calculated for the entire Lake Superior watershed...

  9. Does gender activism aggravate the superiority of one gender over ...

    African Journals Online (AJOL)

    Does gender activism aggravate the superiority of one gender over the other? ... findings reveal that firstly, failure to value and embrace diversity by males, perpetuate gender discrimination. ... Keywords: Context, Culture, Structures, Systems ...

  10. Electrocautery Superior to Topical Treatments for Precancerous Anal Lesions

    Science.gov (United States)

    ... Professional Anal Cancer Treatment Anal Cancer Prevention Research Electrocautery Superior to Topical Treatments for Precancerous Anal Lesions ... randomized clinical trial conducted in Amsterdam suggest that electrocautery is better than topical imiquimod or fluorouracil at ...

  11. Computed tomography imaging for superior semicircular canal dehiscence syndrome

    International Nuclear Information System (INIS)

    Dobeli, Karen

    2006-01-01

    Superior semicircular canal dehiscence is a newly described syndrome of sound and/or pressure induced vertigo. Computed tomography (CT) imaging plays an important role in confirmation of a defect in the bone overlying the canal. A high resolution CT technique utilising 0.5 mm or thinner slices and multi-planar reconstructions parallel to the superior semicircular canal is required. Placement of a histogram over a suspected defect can assist CT diagnosis

  12. Marketing at Superior: Theory meets application in the field

    International Nuclear Information System (INIS)

    Jeffrey, S.

    1992-01-01

    The field marketing practices of Superior Propane in rural Ontario are illustrated. In the Smithville area, Superior's customer base consists of agricultural, industrial, commercial, and residential customers, plus a large market for auto propane. A 6,900 ft 2 showroom presents a representative selection of the wide range of appliances using propane. Superior's Smithville branch is one of the top five in Canada, in terms of volume. To expand business beyond its traditional branch structures, Superior has an Independent Partners Program which is aimed at all phases of business including independent sales agents, conversions, propane fuel stops, appliance installations, and building contractors. In Keswick, located in the summer resort region on the south shore of Lake Simcoe, Superior's base load is 40% commercial and 20% each agricultural, residential, and automotive. A new 4,100 ft 2 showroom was recently constructed with separate display units for each appliance. The new building has brought increases in auto propane and appliance sales. The different branches of Superior Propane are able to tailor their marketing programs according to local needs by choosing the appropriate programs from those available at head office. 5 figs

  13. Veia cava superior esquerda anômala com ausência de veia cava superior direita: achados de imagem Persistent left superior vena cava with absent right superior vena cava: image findings

    Directory of Open Access Journals (Sweden)

    Cyrillo Rodrigues de Araújo Júnior

    2003-10-01

    Full Text Available A persistência da veia cava superior esquerda com ausência da veia cava superior direita é uma anomalia rara, com menos de 150 casos descritos na literatura. A não-obliteração e regressão da veia cardinal anterior esquerda durante o desenvolvimento embriológico promove uma variação sistêmica de retorno venoso ao coração, com persistência da veia cava superior esquerda. Sua incidência varia de 0,3% em pacientes sem alterações cardíacas congênitas concomitantes a 4,3% naqueles com cardiopatias. Na maioria das vezes coexiste a veia cava superior direita, porém se houver regressão e degeneração da veia cardinal anterior direita, implicará a sua ausência e a drenagem venosa para o coração será feita pela veia cava superior esquerda ao átrio direito, através do seio coronariano. Mostramos um caso de um paciente submetido a radiografia de tórax e tomografia computadorizada para avaliação de doença pulmonar obstrutiva crônica, tendo como achado a persistência da veia cava superior esquerda com ausência da direita, sem qualquer cardiopatia associada e com a drenagem cardíaca sendo feita, através do seio coronariano, para o átrio direito.Persistent left superior vena cava with absent right superior vena cava is a rare anomaly, with less than 150 cases reported in the literature. Congenitally persistent left superior vena cava is the most common variant of systemic venous return to the heart, resulting embryologically from failure of the left anterior cardinal vein to become obliterated. Its incidence varies from 0.3% in patients with otherwise normal heart to 4.3% in patients with congenital heart disease. In the majority of the patients, a right superior vena cava is present as well, but rarely the right anterior cardinal vein degenerates resulting in the absence of the normal right superior vena cava. The blood from the right side is carried by the persistent left superior vena cava to the right atrium through the

  14. PTOSE PALPEBRAL – A IMPORTÂNCIA DE VALORIZAR

    Directory of Open Access Journals (Sweden)

    Raquel Oliveira

    2016-07-01

    Comentários: A MG é um distúrbio neuromuscular cujo diagnóstico constitui um desafio nesta faixa etária. Neste caso clínico a manutenção da sintomatologia após a primeira vinda ao SU, motivou uma observação clínica cuidadosa que, apoiada pela deteção de anticorpos anti-AchR, permitiu confirmar o diagnóstico. O diagnóstico precoce é fundamental uma vez que a terapêutica instituída é eficaz.

  15. Primary palpebral and orbital ossification in pseudo-pseudohypoparathyroidism

    DEFF Research Database (Denmark)

    Klauber, S.; Heegaard, S.; Prause, J.U.

    2002-01-01

    ophthalmology, Albright's heriditary osteodystrophy, ossification, pseudo-pseudohypoparathyroidism, pseodohypoparathyroidism, hypothyroidism, GNAS1 gene, history, eyelid, orbit......ophthalmology, Albright's heriditary osteodystrophy, ossification, pseudo-pseudohypoparathyroidism, pseodohypoparathyroidism, hypothyroidism, GNAS1 gene, history, eyelid, orbit...

  16. La educación superior como eje del desarrollo

    Directory of Open Access Journals (Sweden)

    Benjamín Afanador Vargas

    2003-11-01

    Full Text Available Este documento analiza cómo ha sido la interacción entre la política educativa y las estrategiasde desarrollo en Colombia, a lo largo del siglo XX. Se presenta una revisión del estadoactual de la educación en Colombia, tanto a nivel de educación básica y media, como de laeducación superior. Para ello se toman tres criterios básicos que son la cobertura, la calidady la equidad en el acceso a la educación. Para el caso de la educación superior, se comparala oferta de cupos con la demanda existente, se clasifican los distintos segmentos en que sedivide la educación superior y se hace una breve reseña sobre el recurso humano con que secuenta en la educación superior colombiana. Así mismo, se expone una conceptualización delos retos que enfrenta la educación superior, sobretodo para lograr una cohesión de la sociedad,evitando que algunos de sus integrantes sean excluidos y permitiendo que todos losestamentos de la sociedad puedan compartir los mismos ideales y los consideren asequibles.Finalmente, se presentan unas conclusiones que se derivan del estudio y se proponen algunasrecomendaciones de política .

  17. Superior Canal Dehiscence Syndrome: Lessons from the First 20 Years

    Directory of Open Access Journals (Sweden)

    Bryan K. Ward

    2017-04-01

    Full Text Available Superior semicircular canal dehiscence syndrome was first reported by Lloyd Minor and colleagues in 1998. Patients with a dehiscence in the bone overlying the superior semicircular canal experience symptoms of pressure or sound-induced vertigo, bone conduction hyperacusis, and pulsatile tinnitus. The initial series of patients were diagnosed based on common symptoms, a physical examination finding of eye movements in the plane of the superior semicircular canal when ear canal pressure or loud tones were applied to the ear, and high-resolution computed tomography imaging demonstrating a dehiscence in the bone over the superior semicircular canal. Research productivity directed at understanding better methods for diagnosing and treating this condition has substantially increased over the last two decades. We now have a sound understanding of the pathophysiology of third mobile window syndromes, higher resolution imaging protocols, and several sensitive and specific diagnostic tests. Furthermore, we have a treatment (surgical occlusion of the superior semicircular canal that has demonstrated efficacy. This review will highlight some of the fundamental insights gained in SCDS, propose diagnostic criteria, and discuss future research directions.

  18. Noise management to achieve superiority in quantum information systems.

    Science.gov (United States)

    Nemoto, Kae; Devitt, Simon; Munro, William J

    2017-08-06

    Quantum information systems are expected to exhibit superiority compared with their classical counterparts. This superiority arises from the quantum coherences present in these quantum systems, which are obviously absent in classical ones. To exploit such quantum coherences, it is essential to control the phase information in the quantum state. The phase is analogue in nature, rather than binary. This makes quantum information technology fundamentally different from our classical digital information technology. In this paper, we analyse error sources and illustrate how these errors must be managed for the system to achieve the required fidelity and a quantum superiority.This article is part of the themed issue 'Quantum technology for the 21st century'. © 2017 The Author(s).

  19. Anthropogenic climate change has altered primary productivity in Lake Superior.

    Science.gov (United States)

    O'Beirne, M D; Werne, J P; Hecky, R E; Johnson, T C; Katsev, S; Reavie, E D

    2017-06-09

    Anthropogenic climate change has the potential to alter many facets of Earth's freshwater resources, especially lacustrine ecosystems. The effects of anthropogenic changes in Lake Superior, which is Earth's largest freshwater lake by area, are not well documented (spatially or temporally) and predicted future states in response to climate change vary. Here we show that Lake Superior experienced a slow, steady increase in production throughout the Holocene using (paleo)productivity proxies in lacustrine sediments to reconstruct past changes in primary production. Furthermore, data from the last century indicate a rapid increase in primary production, which we attribute to increasing surface water temperatures and longer seasonal stratification related to longer ice-free periods in Lake Superior due to anthropogenic climate warming. These observations demonstrate that anthropogenic effects have become a prominent influence on one of Earth's largest, most pristine lacustrine ecosystems.

  20. Partial anomalous pulmonary venous connection to the superior vena cava.

    Science.gov (United States)

    Aramendi, José I; Rey, Estibaliz; Hamzeh, Gadah; Crespo, Alejandro; Luis, Maite; Voces, Roberto

    2011-04-01

    We describe the surgical technique of reimplantation of the right superior pulmonary vein into the left atrium in 2 patients with partial anomalous pulmonary venous connection to the superior vena cava without atrial septal defect. A right axillary minithoracotomy is done through the fourth intercostal space. The pulmonary vein is detached from its origin in the superior vena cava. This is sutured with 6-0 reabsorbable polydioxanone suture (Ethicon, Somerville, NJ). A lateral clamp is applied to the left atrium, and the pulmonary vein is reimplanted. The patient is extubated in the operating room. Neither cardiopulmonary bypass nor blood transfusion was required. It is simple, safe, and reproducible. Copyright © 2011 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.

  1. Papaya Development Model As A Competitive Local Superior Commodity

    Directory of Open Access Journals (Sweden)

    Reny Sukmawani

    2014-12-01

    Full Text Available The aim of this research is to study the comparative advantage and papaya competitive and to design its development model by using the approach of local base agriculture development. This research uses survey method. The resulting research shows that papaya is a base commodity that has comparative advantage and competitive. The development papaya in the district of Sukabumi is quite good bases on eight superior creations. But in order to be the main sector in economic development and has a competition, the development of papaya must concern to its influence factors. In supporting papaya development as a competitive local superior commodity, it needs to be done some efforts are as follows: (1 increase a skillful worker; (2 improve business management; (3 increase papaya productivity by using technology and study papaya planted technology in specific local superior commodity; (4 develop the involvement of the business relation; (5 provide market information and information technology network; and (6 improve infrastructures.

  2. Isolated abscess in superior rectus muscle in a child

    Directory of Open Access Journals (Sweden)

    Sushank Ashok Bhalerao

    2015-01-01

    Full Text Available Pyomyositis is a primary bacterial infection of striated muscles nearly always caused by Staphylococcus aureus. Development of the intramuscular abscess involving the extra-ocular muscles (EOMs remains an extremely rare process. We herein present a case of isolated EOM pyomyositis involving superior rectus muscle in a 2-year male child who was referred with complaints of swelling in left eye (LE and inability to open LE since last 1-month. Orbital computed tomography (CT scan showed a well-defined, hypo-dense, peripheral rim-enhancing lesion in relation to left superior rectus muscle suggestive of left superior rectus abscess. The abscess was drained through skin approach. We concluded that pyomyositis of EOM should be considered in any patient presenting with acute onset of orbital inflammation and characteristic CT or magnetic resonance imaging features. Management consists of incision and drainage coupled with antibiotic therapy.

  3. Aging and the picture superiority effect in recall.

    Science.gov (United States)

    Winograd, E; Smith, A D; Simon, E W

    1982-01-01

    One recurrent theme in the literature on aging and memory is that the decline of memory for nonverbal information is steeper than for verbal information. This research compares verbal and visual encoding using the picture superiority effect, the finding that pictures are remembered better than words. In the first experiment, an interaction was found between age and type of material; younger subjects recalled more pictures than words while older subjects did not. However, the overall effect was small and two further experiments were conducted. In both of these experiments, the picture superiority effect was found in both age groups with no interaction. In addition, performing a semantic orienting task had no effect on recall. The finding of a picture superiority effect in older subjects indicates that nonverbal codes can be effectively used by subjects in all age groups to facilitate memory performance.

  4. Temporal Bone Fracture Causing Superior Semicircular Canal Dehiscence

    Directory of Open Access Journals (Sweden)

    Kevin A. Peng

    2014-01-01

    Full Text Available Importance. Superior semicircular canal dehiscence (SCD is a third window lesion of the inner ear causing symptoms of vertigo, autophony, tinnitus, and hearing loss. A “two-hit” hypothesis has traditionally been proposed, whereby thinly developed bone overlying the superior canal is disrupted by a sudden change in intracranial pressure. Although the symptoms of SCD may be precipitated by head injury, no previous reports have described a temporal bone fracture directly causing SCD. Observations. Two patients sustained temporal bone fractures after closed head trauma, and developed unilateral otologic symptoms consistent with SCD. In each instance, computed tomography imaging revealed fractures extending through the bony roof of the superior semicircular canal. Conclusions and Relevance. Temporal bone fractures, which are largely treated nonoperatively, have not previously been reported to cause SCD. As it is a potentially treatable entity, SCD resulting from temporal bone fracture must be recognized as a possibility and diagnosed promptly if present.

  5. Status of the shortjaw cisco (Coregonus zenithicus) in Lake Superior

    Science.gov (United States)

    Hoff, Michael H.; Todd, Thomas N.

    2004-01-01

    The shortjaw cisco (Coregonus zenithicus) was historically found in Lakes Huron, Michigan, and Superior, but has been extirpated in Lakes Huron and Michigan apparently as the result of commercial overharvest. During 1999-2001, we conducted an assessment of shortjaw cisco abundance in five areas, spanning the U.S. waters of Lake Superior, and compared our results with the abundance measured at those areas in 1921-1922. The shortjaw cisco was found at four of the five areas sampled, but abundances were so low that they were not significantly different from zero. In the four areas where shortjaw ciscoes were found, abundance declined significantly by 99% from the 1920s to the present. To increase populations of this once economically and ecologically important species in Lake Superior, an interagency rehabilitation effort is needed. Population monitoring is recommended to assess population trends and to evaluate success of rehabilitation efforts.

  6. INFORMATION ASSURANCE - INTELLIGENCE - INFORMATION SUPERIORITY RELATIONSHIP WITHIN NATO OPERATIONS

    Directory of Open Access Journals (Sweden)

    Gheorghe BOARU, Ioan-Mihai ILIEŞ

    2011-01-01

    Full Text Available There is a tight relationship between information assurance, the intelligence cycle and information superiority within NATO operations. The intelligence cycle has a discrete architecture and provides on-time and relevant intelligence products to the joint force commanders and to other authorized users in a specifi c joint area of operations. The intelligence cycle must follow the evolution of the operation. A permanent intelligence estimate will be performed during the military decision making process and operations execution. Information superiority is one of the most powerful intelligence cycle achievements. and decisively infuences the success of NATO joint operations. Information superiority must be preserved and enhanced through information assurance. Information assurance is an information operation that must be planned by the military in charge of operation security or by non-military experts, executed by all personnel during the entire intelligence cycle life time and employed during the planning and execution of NATO joint operations.

  7. Neurocognitive decrements are present in intellectually superior schizophrenia

    Directory of Open Access Journals (Sweden)

    Anja eVaskinn

    2014-05-01

    Full Text Available Data suggests that individuals with schizophrenia (SZ and superior intelligence can present without specific neurocognitive deficits. However, neurocognitive decrements, defined as worse cognition than expected, have been reported in practically all schizophrenia cases. This study investigated if neurocognitive decrements are present in intellectually superior SZ by comparing the neuropsychological profile of SZ cases with IQ-matched healthy controls (HC across intellectual level. Participants with SZ and HCs were stratified into three IQ-groups; intellectually low (IQ 80-95; SZ n = 65 & HC n = 13, intellectually normal (IQ = 100-115; SZ n = 111 & HC n = 115 and intellectually superior (IQ > 120; SZ n = 20 & HC n = 50. A repeated measures multivariate analysis of co-variance compared performance on eight selected neuropsychological tests across IQ-strata and diagnostic group. Differences in clinical characteristics and social functioning in SZ across IQ-strata were investigated with multivariate and univariate analyses of variance. Intellectually superior SZ participants scored within normal limits, but had neurocognitive decrements compared to superior HCs. Decrements were of the same magnitude as in the low and normal IQ-strata. Levels of functional impairments and clinical characteristics in participants with SZ did not differ significantly across IQ-strata. Results indicate that neurocognitive decrements are present in intellectually superior SZ to the same extent as in intellectually low and intellectually normal SZ, supporting the notion that SZ is a neurocognitive disorder. Similar levels of social functional deficits and clinical symptoms suggest similar disease processes in SZ across intellectual level.

  8. Total variation superiorized conjugate gradient method for image reconstruction

    Science.gov (United States)

    Zibetti, Marcelo V. W.; Lin, Chuan; Herman, Gabor T.

    2018-03-01

    The conjugate gradient (CG) method is commonly used for the relatively-rapid solution of least squares problems. In image reconstruction, the problem can be ill-posed and also contaminated by noise; due to this, approaches such as regularization should be utilized. Total variation (TV) is a useful regularization penalty, frequently utilized in image reconstruction for generating images with sharp edges. When a non-quadratic norm is selected for regularization, as is the case for TV, then it is no longer possible to use CG. Non-linear CG is an alternative, but it does not share the efficiency that CG shows with least squares and methods such as fast iterative shrinkage-thresholding algorithms (FISTA) are preferred for problems with TV norm. A different approach to including prior information is superiorization. In this paper it is shown that the conjugate gradient method can be superiorized. Five different CG variants are proposed, including preconditioned CG. The CG methods superiorized by the total variation norm are presented and their performance in image reconstruction is demonstrated. It is illustrated that some of the proposed variants of the superiorized CG method can produce reconstructions of superior quality to those produced by FISTA and in less computational time, due to the speed of the original CG for least squares problems. In the Appendix we examine the behavior of one of the superiorized CG methods (we call it S-CG); one of its input parameters is a positive number ɛ. It is proved that, for any given ɛ that is greater than the half-squared-residual for the least squares solution, S-CG terminates in a finite number of steps with an output for which the half-squared-residual is less than or equal to ɛ. Importantly, it is also the case that the output will have a lower value of TV than what would be provided by unsuperiorized CG for the same value ɛ of the half-squared residual.

  9. The pygmy whitefish, Coregonus coulteri, in Lake Superior

    Science.gov (United States)

    Eschmeyer, Paul H.; Bailey, Reeve M.

    1955-01-01

    Bottom trawling by the U. S. Fish and Wildlife Service motor vessel Cisco in Lake Superior in 1952–1953 revealed a large population of a tiny whitefish, Coregonus (Prosopium) coulteri, which has been reported previously only from northwestern North America. The hiatus in range, from Lake Superior to the Columbia River basin, is the greatest known for a North American freshwater fish. Although minor structural differences characterize the disjunct populations of the pygmy whitefish, these are not deemed worthy of nomenclatorial recognition. Comparisons with related species indicate that the pygmy whitefish is distinctive in the small size, large scales, few vertebrae, few pyloric caeca, and in other characters.

  10. Ruptured superior gluteal artery pseudoaneurysm with hemorrhagic shock: Case report.

    Science.gov (United States)

    Corbacioglu, Kerem Seref; Aksel, Gokhan; Yildiz, Altan

    2016-03-01

    Pseudoaneurysm of the superior gluteal artery (SGA) is very rare and the most common causes are blunt or penetrating pelvic traumas. Although pseudoaneurysm can be asymptomatic at the time of initial trauma, it can be symptomatic weeks, months, even years after initial trauma. We present a case of a ruptured superior gluteal artery pseudoaneurysm with hemorrhagic shock twenty days after a bomb injury in the Syria civil war. In addition, we review the anatomy of the SGA, clinical presentation and pitfalls of pseudoaneurysm, and imaging and treatment options.

  11. Designing Pareto-superior demand-response rate options

    International Nuclear Information System (INIS)

    Horowitz, I.; Woo, C.K.

    2006-01-01

    We explore three voluntary service options-real-time pricing, time-of-use pricing, and curtailable/interruptible service-that a local distribution company might offer its customers in order to encourage them to alter their electricity usage in response to changes in the electricity-spot-market price. These options are simple and practical, and make minimal information demands. We show that each of the options is Pareto-superior ex ante, in that it benefits both the participants and the company offering it, while not affecting the non-participants. The options are shown to be Pareto-superior ex post as well, except under certain exceptional circumstances. (author)

  12. Selective amygdalohippocampectomy via trans-superior temporal gyrus keyhole approach.

    Science.gov (United States)

    Mathon, Bertrand; Clemenceau, Stéphane

    2016-04-01

    Hippocampal sclerosis is the most common cause of drug-resistant epilepsy amenable for surgical treatment and seizure control. The rationale of the selective amygdalohippocampectomy is to spare cerebral tissue not included in the seizure generator. Describe the selective amygdalohippocampectomy through the trans-superior temporal gyrus keyhole approach. Selective amygdalohippocampectomy for temporal lobe epilepsy is performed when the data (semiology, neuroimaging, electroencephalography) point to the mesial temporal structures. The trans-superior temporal gyrus keyhole approach is a minimally invasive and safe technique that allows disconnection of the temporal stem and resection of temporomesial structures.

  13. Síndrome de veia cava superior Superior vena cava syndrome

    Directory of Open Access Journals (Sweden)

    SAMUEL ZUÍNGLIO DE BIASI CORDEIRO

    2002-09-01

    Full Text Available A obstrução ao fluxo sanguíneo na VCS e suas manifestações clínicas têm hoje como causa principal o câncer de pulmão. A história relata que no século XVIII a sífilis e a tuberculose eram responsáveis por 40% dos casos conhecidos. O conhecimento das alterações hemodinâmicas compreendidas nesta síndrome assim como a apuração das técnicas de diagnóstico de imagem e de citopatologia permitem hoje que o médico possa tratar de seu paciente com mais segurança e conforto do que há 10 anos. A TC contrastada e a RM auxiliam no diagnóstico de localização da obstrução e técnicas mais antigas como a cavografia puderam ser abandonadas. O diagnóstico de obstrução da VCS e o estudo por Doppler realizado à beira do leito em muito contribuem para a realização de procedimentos de desobstrução como a angioplastia transluminal percutânea nos casos de trombose ou estenose do vaso. Também a utilização de próteses como PTFE é de importância fundamental na condução de casos de lesão traumática da VCS durante cirurgias para câncer pulmonar ou mediastinal. No campo da radioterapia, a técnica de fracionamento permite que altas doses de irradiação sejam administradas aos pacientes portadores de neoplasias malignas, com benefícios em 70% dos casos.Lung cancer is now the main cause of blood flow obstruction in the superior vena cava and of its clinical manifestations. History tells that in the 18th Century, syphilis and tuberculosis were responsible for 40% of the known cases. The knowledge of hemodynamic changes seen in this syndrome and the improvement of diagnostic and cytopathologic techniques allow for a safer and more comfortable treatment of the patient than 10 years ago. Contrast CT and MR added to the identification and location of the obstruction, and older techniques such as cavography could be abandoned. SVC obstruction diagnosis and Doppler studies carried out at the bed of the patient contribute to

  14. Evaluation of novel scoring system named 5-5-5 exacerbation grading scale for allergic conjunctivitis disease.

    Science.gov (United States)

    Shoji, Jun; Inada, Noriko; Sawa, Mitsuru

    2009-12-01

    The objective of this study is to evaluate the practical usefulness of a scoring system using the 5-5-5 exacerbation grading scale for allergic conjunctivitis disease (ACD). Subjects were 103 patients with ACD including 40 patients with vernal keratoconjunctivitis (VKC), 20 patients with atopic keratoconjunctivitis (AKC), and 43 patients with allergic conjunctivitis (AC). The 5-5-5 exacerbation grading scale consists of the following 3 graded groups of clinical observations: the 100-point-grade group (100 points for each observation) includes active giant papillae, gelatinous infiltrates of the limbus, exfoliative epithelial keratopathy, shield ulcer and papillary proliferation at lower palpebral conjunctiva; the 10-point-grade group (10 points for each observation) includes blepharitis, papillary proliferation with velvety appearance, Horner-Trantas spots, edema of bulbal conjunctiva, and superficial punctate keratopathy; and the 1-point-grade group (1 point for each observation) includes papillae at upper palpebral conjunctiva, follicular lesion at lower palpebral conjunctiva, hyperemia of palpebral conjunctiva, hyperemia of bulbal conjunctiva, and lacrimal effusion. The total points in each grade group were determined as the severity score of the 5-5-5 exacerbation grading scale. The median severity scores of the 5-5-5 exacerbation grading scale in VKC, AKC and AC were 243 (range: 12-444), 32.5 (11-344), and 13 (2-33), respectively. The severity score of each ACD disease type was significantly different (P Kruskal-Wallis test). The severity of each type of ACD was classified as severe, moderate, or mild according to the severity score. The 5-5-5 exacerbation grading scale is a useful clinical tool for grading the severity of each type of ACD.

  15. Memory for Pictorial Information and the Picture Superiority Effect.

    Science.gov (United States)

    Maisto, Albert A.; Queen, Debbie Elaine

    1992-01-01

    The performance of 53 younger adults (mean age 20.7) and 52 older adults (mean age 68.3) was compared in a memory task involving pictures, words, and pictures-plus-words. Results showed (1) significantly higher recall scores for younger adults; (2) equivalent picture superiority effect for both groups; and (3) decline in older adults' performance…

  16. Temporal versus Superior Limbal Incision: Any difference in visual ...

    African Journals Online (AJOL)

    Aim: To compare the visual outcome of a superiorly placed limbal incision with a temporal limbal incision in extracapsular cataract surgery. The main outcome measures are visual acuity and the degree of stigmatism based on refraction. Method: A retrospective non randomized comparative study. Medical records of 40 ...

  17. Evaluation of the Superior Gluteal Nerve During Proximal Femoral Nailing

    Directory of Open Access Journals (Sweden)

    Mehmet Sonmez

    2017-05-01

    Full Text Available Aim: The superior gluteal nerve may be compromised during hip surgery. We retrospectively evaluated the patients who underwent proximal femoral nailing for unstable trochanteric fractures in order to investigate the presence of superior gluteal nerve injury and its clinical findings. Material and Method: Twenty five patients (14 women, 11 men were included in the study who had femoral nailing between January 2004 and March 2010 at Hamidiye Sisli Etfal Training and Research Hospital Department of Orthopaedics. Two different types of nails which have similar designs and surgical techniques were used for fracture fixation. Patients who had a history of cerebrovascular disease, electromyography findings of polyneuropathy, or degenerative vertebral disease were excluded from the study. Patients were evaluated clinically and radiologically. Findings related to acute denervation in the gluteus medius muscle and motor unit action potential changes were accepted as signs of superior gluteal nerve injury. Results: Eight patients were using support during walking and three of these patients had positive Trendelenburg sign, but only one patient had acute denervation signs of the superior gluteal nerve. Discussion: Based on the present study the incidence of iatrogenic nerve injury is a rare complication of proximal femoral nailing. Elderly patients, regardless of whether they have nerve injury, may limp and need to use a walking support.

  18. Morphological evaluation of the superior colliculus of young Wistar ...

    African Journals Online (AJOL)

    Morphological evaluation of the superior colliculus of young Wistar rats following prenatal exposure to Carica papaya leaf extract. ... 9 and 10 of gestation (Group A); days 16 and 17 (Group B); and on days 9, 10, 16 and 17 (Group C); while Group D represented the control, and received distilled water throughout gestation.

  19. Superior repair: A useful approach for some anatomic variants of ...

    African Journals Online (AJOL)

    retrospectively reviewed.Three patients had long narrow venous stalk connecting the coronary sinus to venous confl uence; two had the right pulmonary veins draining to superior vena cava (SVC) and left pulmonary veins to left lateral wall of SVC and one had an obstruction at entrance of Pulmonary Vein into venous confl ...

  20. Superiority of legendre polynomials to Chebyshev polynomial in ...

    African Journals Online (AJOL)

    In this paper, we proved the superiority of Legendre polynomial to Chebyshev polynomial in solving first order ordinary differential equation with rational coefficient. We generated shifted polynomial of Chebyshev, Legendre and Canonical polynomials which deal with solving differential equation by first choosing Chebyshev ...

  1. Developmental Trends of the Defence of Superior Order: Acritical ...

    African Journals Online (AJOL)

    Developmental Trends of the Defence of Superior Order: Acritical Appraisal of the Statute of the International Criminal Court. Eni E Alobo. Abstract. No Abstract. LWATI: A Journal of Contemporary Research, 9(3), 107-125, 2012. Full Text: EMAIL FULL TEXT EMAIL FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL ...

  2. Superior refining performance beyond 2000 -- Breaking traditional paradigms

    International Nuclear Information System (INIS)

    Tassel, B. van

    1995-01-01

    Over the last 5 years, refining companies have not performed well financially, generating returns below the cost of capital. Environmental regulations have caused the industry to invest significant amounts of capital, and while new regulations will cause the shutdown of between 500 thousand and 1.2 million barrels per day of capacity, the industry structure will remain poor and financial returns for the average player will likely be volatile, cyclical, and below the cost of capital. Based on this industry outlook, refining companies seeking superior performance will have to break the traditional paradigms and adopt world-class practices used in other industries. Changes required to significantly improve financial returns will include shifts in business strategy to accommodate growth, and development of nontraditional services, as well as initiates to dramatically reshape cost structure and improve profitability. Making the changes to become a superior performer in the refining business will require a clear vision and strong leadership at multiple levels in the organization. The transformation will also require changes in company culture and incentive plans that encourage managers to act as owners. In addition, superior performers will push accountability for results to low levels in the organization. Given the herd mentality of the oil industry, superior performers must take decisive, preemptive action to generate a substantial, competitive advantage

  3. Polymerase Chain Reaction (PCR) provides a superior tool for the ...

    African Journals Online (AJOL)

    Polymerase Chain Reaction (PCR) provides a superior tool for the diagnosis of Pneumococcal Infection in Burkina Faso. Y Chaibou, M Congo/Ouedraogo, I Sanou, H Somlare, K Ouattara, CM Kienou, H Belem, E Sampo, SA Traore, R Traore/Ouedraogo, C Hatcher, L Mayer, X Wang, L Sangare ...

  4. The Quagga mussel invades the Lake Superior basin - journal article

    Science.gov (United States)

    Prior studies recognized the presence of a single dreissenid species in Lake Superior--the zebra mussel Dreissena polymorpha. However, taxonomic keys based on traditional shell morphology are not always able to differentiate dreissenid species with confidence. We thus employed ge...

  5. Ileocolic Arteriovenous Fistula with Superior Mesenteric Vein Aneurism: Endovascular Treatment

    International Nuclear Information System (INIS)

    Gregorio, Miguel Angel de; Gimeno, Maria Jose; Medrano, Joaquin; Schoenholz, Caudio; Rodriguez, Juan; D'Agostino, Horacio

    2004-01-01

    We report a case of a venous aneurysm secondary to an acquired ileocolic arteriovenous fistula in a 64-year-old woman with recurrent abdominal pain and history of appendectomy. The aneurysm was diagnosed by ultrasound and computed tomography. Angiography showed an arteriovenous fistula between ileocolic branches of the superior mesenteric artery and vein. This vascular abnormality was successfully treated with coil embolization

  6. Superior refining performance beyond 2000 -- Breaking traditional paradigms

    Energy Technology Data Exchange (ETDEWEB)

    Tassel, B. van [McKinsey and Co., Inc., Houston, TX (United States)

    1995-09-01

    Over the last 5 years, refining companies have not performed well financially, generating returns below the cost of capital. Environmental regulations have caused the industry to invest significant amounts of capital, and while new regulations will cause the shutdown of between 500 thousand and 1.2 million barrels per day of capacity, the industry structure will remain poor and financial returns for the average player will likely be volatile, cyclical, and below the cost of capital. Based on this industry outlook, refining companies seeking superior performance will have to break the traditional paradigms and adopt world-class practices used in other industries. Changes required to significantly improve financial returns will include shifts in business strategy to accommodate growth, and development of nontraditional services, as well as initiates to dramatically reshape cost structure and improve profitability. Making the changes to become a superior performer in the refining business will require a clear vision and strong leadership at multiple levels in the organization. The transformation will also require changes in company culture and incentive plans that encourage managers to act as owners. In addition, superior performers will push accountability for results to low levels in the organization. Given the herd mentality of the oil industry, superior performers must take decisive, preemptive action to generate a substantial, competitive advantage.

  7. Dynamic ensemble coding of saccades in the monkey superior colliculus.

    NARCIS (Netherlands)

    Goossens, H.H.L.M.; Opstal, A.J. van

    2006-01-01

    The deeper layers of the midbrain superior colliculus (SC) contain a topographic motor map in which a localized population of cells is recruited for each saccade, but how the brain stem decodes the dynamic SC output is unclear. Here we analyze saccade-related responses in the monkey SC to test a new

  8. Residual symptoms after surgery for unilateral congenital superior oblique palsy.

    Science.gov (United States)

    Caca, Ihsan; Sahin, Alparslan; Cingu, Abdullah; Ari, Seyhmus; Akbas, Umut

    2012-01-01

    To establish the surgical results and residual symptoms in 48 cases with unilateral congenital superior oblique muscle palsy that had surgical intervention to the vertical muscles alone. Myectomy and concomitant disinsertion of the inferior oblique (IO) muscle was performed in 38 cases and myectomy and concomitant IO disinsertion and recession of the superior rectus muscle in the ipsilateral eye was performed in 10 cases. The preoperative and postoperative vertical deviation values and surgical results were compared. Of the patients who had myectomy and concomitant IO disinsertion, 74% achieved an "excellent" result, 21% a "good" result, and 5% a "poor" result postoperatively. The difference in deviation between preoperative and postoperative values was statistically significant (P < .001). Of the patients who had myectomy and concomitant inferior oblique disinsertion and ipsilateral superior rectus recession, 50% achieved an "excellent" result, 20% a "good" result, and 30% a "poor" result postoperatively. The difference in deviation between preoperative and postoperative values was statistically significant (P < .001). Both procedures are effective and successful in patients with superior oblique muscle palsy, but a secondary surgery may be required. Copyright 2012, SLACK Incorporated.

  9. Superior semicircular canal dehiscence in relation to the superior petrosal sinus: a potential cause of pulsatile tinnitus

    International Nuclear Information System (INIS)

    Liu, Z.; Bi, W.; Li, J.; Li, Q.; Dong, C.; Zhao, P.; Lv, H.; Wang, Z.

    2015-01-01

    Aim: To examine the association between superior semicircular canal dehiscence (SSCD) and pulsatile tinnitus (PT). Materials and methods: Two SSCD groups included 408 unilateral persistent PT patients, and 511 controls undergoing head and neck dual-phase contrast-enhanced computed tomography (DP-CECT) for reasons other than PT. The prevalence of type I (no the superior petrosal sinus running through the dehiscence) and type II (superior semicircular canal dehiscence in relation to the superior petrosal sinus) SSCD was analysed using chi-square test. Results: SSCD was identified in 5.1% (21/408) of PT ears, significantly different from 2% (8/408) of non-PT ears and 0.7% (7/1022) of controls. There was no significant difference in SSCD prevalence between non-PT ears in the PT group and controls. In the PT group, 15/21 ears were type II SSCD; 6/21 ears were type I. Fifteen combined non-PT and control ears with SSCD included two type II and 13 type I SSCD. The prevalence of type II SSCD in PT ears was significantly higher than that of non-PT ears in both groups, and the prevalence of type I SSCD in PT ears was similar to that of non-PT ears in both groups. Conclusion: Compared with type I SSCD, there may be a causal relationship between type II SSCD and PT. -- Highlights: •The prevalence of type II SSCD in PT ears was significantly higher than that in non-PT ears in both the PT group and controls. •The prevalence of type I SSCD was similar among the PT ears and non-PT ears. •The superior petrosal sinus running through the dehiscence may be essential for SSCD to induce PT. •Venous phase CT images with bone window settings is the modality method to differentiate type II from type I SSCD

  10. The Penokean orogeny in the Lake Superior region

    Science.gov (United States)

    Schulz, K.J.; Cannon, W.F.

    2007-01-01

    The Penokean orogeny began at about 1880 Ma when an oceanic arc, now the Pembine-Wausau terrane, collided with the southern margin of the Archean Superior craton marking the end of a period of south-directed subduction. The docking of the buoyant craton to the arc resulted in a subduction jump to the south and development of back-arc extension both in the initial arc and adjacent craton margin to the north. A belt of volcanogenic massive sulfide deposits formed in the extending back-arc rift within the arc. Synchronous extension and subsidence of the Superior craton resulted in a broad shallow sea characterized by volcanic grabens (Menominee Group in northern Michigan). The classic Lake Superior banded iron-formations, including those in the Marquette, Gogebic, Mesabi and Gunflint Iron Ranges, formed in that sea. The newly established subduction zone caused continued arc volcanism until about 1850 Ma when a fragment of Archean crust, now the basement of the Marshfield terrane, arrived at the subduction zone. The convergence of Archean blocks of the Superior and Marshfield cratons resulted in the major contractional phase of the Penokean orogeny. Rocks of the Pembine-Wausau arc were thrust northward onto the Superior craton causing subsidence of a foreland basin in which sedimentation began at about 1850 Ma in the south (Baraga Group rocks) and 1835 Ma in the north (Rove and Virginia Formations). A thick succession of arc-derived turbidites constitutes most of the foreland basin-fill along with lesser volcanic rocks. In the southern fold and thrust belt tectonic thickening resulted in high-grade metamorphism of the sediments by 1830 Ma. At this same time, a suite of post-tectonic plutons intruded the deformed sedimentary sequence and accreted arc terranes marking the end of the Penokean orogeny. The Penokean orogen was strongly overprinted by younger tectonic and thermal events, some of which were previously ascribed to the Penokean. Principal among these was a

  11. Tullio phenomenon in superior semicircular canal dehiscence syndrome.

    Science.gov (United States)

    Basura, Gregory J; Cronin, Scott J; Heidenreich, Katherine D

    2014-03-18

    Tullio phenomenon refers to eye movements induced by sound.(1) This unusual examination finding may be seen in superior semicircular canal dehiscence (SSCD) syndrome.(2) This disorder is due to absent bone over the superior semicircular canal (figure). Patients complain of dizziness triggered by loud sound, aural fullness, autophony, and pulsatile tinnitus. When Tullio phenomenon exists in SSCD syndrome, the patient develops a mixed vertical-torsional nystagmus in which the slow phase rotates up and away from the affected ear (video on the Neurology® Web site at Neurology.org). This pattern of nystagmus aligns in the plane of the dehiscent semicircular canal and is due to excitation of its afferent nerves.

  12. False memories in highly superior autobiographical memory individuals

    Science.gov (United States)

    Patihis, Lawrence; Frenda, Steven J.; LePort, Aurora K. R.; Petersen, Nicole; Nichols, Rebecca M.; Stark, Craig E. L.; McGaugh, James L.; Loftus, Elizabeth F.

    2013-01-01

    The recent identification of highly superior autobiographical memory (HSAM) raised the possibility that there may be individuals who are immune to memory distortions. We measured HSAM participants’ and age- and sex-matched controls’ susceptibility to false memories using several research paradigms. HSAM participants and controls were both susceptible to false recognition of nonpresented critical lure words in an associative word-list task. In a misinformation task, HSAM participants showed higher overall false memory compared with that of controls for details in a photographic slideshow. HSAM participants were equally as likely as controls to mistakenly report they had seen nonexistent footage of a plane crash. Finding false memories in a superior-memory group suggests that malleable reconstructive mechanisms may be fundamental to episodic remembering. Paradoxically, HSAM individuals may retrieve abundant and accurate autobiographical memories using fallible reconstructive processes. PMID:24248358

  13. The picture superiority effect: support for the distinctiveness model.

    Science.gov (United States)

    Mintzer, M Z; Snodgrass, J G

    1999-01-01

    The form change paradigm was used to explore the basis for the picture superiority effect. Recognition memory for studied pictures and words was tested in their study form or the alternate form. Form change cost was defined as the difference between recognition performance for same and different form items. Based on the results of Experiment 1 and previous studies, it was difficult to determine the relative cost for studied pictures and words due to a reversal of the mirror effect. We hypothesized that the reversed mirror effect results from subjects' basing their recognition decisions on their assumptions about the study form. Experiments 2 and 3 confirmed this hypothesis and generated a method for evaluating the relative cost for pictures and words despite the reversed mirror effect. More cost was observed for pictures than words, supporting the distinctiveness model of the picture superiority effect.

  14. A cognitive assessment of highly superior autobiographical memory.

    Science.gov (United States)

    LePort, Aurora K R; Stark, Shauna M; McGaugh, James L; Stark, Craig E L

    2017-02-01

    Highly Superior Autobiographical Memory (HSAM) is characterised as the ability to accurately recall an exceptional number of experiences and their associated dates from events occurring throughout much of one's lifetime. The source of this ability has only begun to be explored. The present study explores whether other enhanced cognitive processes may be critical influences underlying HSAM abilities. We investigated whether enhanced abilities in the domains of verbal fluency, attention/inhibition, executive functioning, mnemonic discrimination, perception, visual working memory, or the processing of and memory for emotional details might contribute critically to HSAM. The results suggest that superior cognitive functioning is an unlikely basis of HSAM, as only modest advantages were found in only a few tests. In addition, we examined HSAM subjects' memory of the testing episodes. Interestingly, HSAM participants recalled details of their own experiences far better than those experiences that the experimenter shared with them. These findings provide additional evidence that HSAM involves, relatively selectively, recollection of personal, autobiographical material.

  15. Superior mesenteric vein rotation: a CT sign of midgut malrotation

    International Nuclear Information System (INIS)

    Nichols, D.M.; Li, D.K.

    1983-01-01

    Computed tomography (CT) of the pancreas, with its excellent display of peripancreatic anatomy, allows visualization of the major vessels entering the mesenteric root. In scans of the normal upper abdomen obtained at or just below the level of the uncinate process of the pancreas, the proximal superior mesenteric vein (SMV) easily can be identified lying on the right ventral aspect of the superior mesenteric artery (SMA). The authors have observed a characteristic abnormality in this normal vascular arrangement on CT scans of the pancreas in three adult patients with suspected chronic pancreatitis who were subsequently proved to have midgut malrotation. They called this the SMV rotation sign and believe that its detection even on CT scans limited to the level of the pancreas should alert the radiologist to the presence of a midgut malrotation that may have been unsuspected

  16. Facile synthesis of carbon dots with superior sensing ability

    Science.gov (United States)

    Jin, Lin; Li, Jingguo; Liu, Liyun; Wang, Zhenling; Zhang, Xingcai

    2018-04-01

    Carbon dots (CDs) have various applications in biomedical and environmental field, such as bio-imaging, bio-sensing and heavy metal detection. In this study, a novel class of CDs were synthesized using a one-step hydrothermal method. The fabricated CDs displayed stable photoluminescence, good water solubility, and photo stability. Moreover, the functional groups (carboxylic acid moieties and hydroxyls) on the surface of the obtained CDs enable it with superior sensing ability (e.g., very low detectable concentration for Pb2+: 5 nmol/L). With superior detection sensitivity, excellent fluorescent properties and facile fabrication method, the as-obtained CDs can find practical applications as cost-effective and sensitive chemo-sensors in water and food safety field.

  17. Mycotic aneurysm of the superior mesenteric artery after septic embolism

    International Nuclear Information System (INIS)

    Schmidt, F.; Dinkel, H.P.

    2002-01-01

    Mycotic aneurysms of the aorta and the visceral arteries are life-threatening diseases, due to potential rupture and organ or limb ischemia. They occur in endocarditis, immunodeficiency, bacteremia and fungemia, and have a poor prognosis.We report on a case of a 54-year-old male patient suffering from abdominal angina after mitral valve replacement for septic mycotic endocarditis. In presence of a mycotic-embolic occlusion of the left popliteal artery and multiple septic organ infarctions a mycotic aneurysm of the superior mesenteric artery was found in abdominal spiral-CT.Based on sequential spiral-CT examinations, this case demonstrates the development of a septic aneurysm of the superior mesenteric artery. (orig.) [de

  18. Magnetic resonance imaging in congenital superior oblique palsy

    International Nuclear Information System (INIS)

    Sato, Miho; Kondo, Nagako; Awaya, Shinobu; Nomura, Hideki; Yagasaki, Teiji.

    1996-01-01

    MRI examinations were carried out on the defined congenital superior oblique palsy in order to distinguish the congenital and acquired palsies. Subjects were 19 patients diagnosed as congenital and their MRI images of 3 or 5 mm-thick coronary slice were taken. The volume of the oblique muscle was calculated from the images and a comparison was made between the diseased and healthy normal sides. The oblique muscle volume at the diseased side was found reduced in most of congenital superior oblique palsy patients. The reduction was observed even at childhood and was thus considered to be a malformation. Further, it is conceivable that the palsy could be caused by the abnormality in the central nervous system as well as by the present anatomical abnormality. (K.H.)

  19. Percutaneous Mechanical Thrombectomy Treatment of Acute Superior Mesenteric Artery Embolism

    Directory of Open Access Journals (Sweden)

    Z. Zhang

    Full Text Available : Objective/Background: This report presents a superior mesenteric artery (SMA embolism managed by percutaneous mechanical thrombectomy (PMT. Methods: A 61 year old woman diagnosed with SMA embolism was admitted. Emboli were found in the middle and distal segments of the SMA on abdominal computed tomography angiography. Under local anaesthesia, a 6 F Rotarex system was used to remove the emboli via left brachial artery access. Emboli were successfully removed and patency was restored to the SMA and its branches. Results: Post-operatively, the patient's symptoms were significantly relieved. No post-operative complications were observed and no discomfort was documented during follow-up. Conclusion: Endovascular treatment of SMA embolism using PMT is a feasible and alternative option. Keywords: Acute mesenteric ischaemia, Embolism, Endovascular treatment, Percutaneous mechanical thrombectomy, Superior mesenteric artery

  20. False memories in highly superior autobiographical memory individuals

    OpenAIRE

    Patihis, Lawrence; Frenda, Steven J.; LePort, Aurora K. R.; Petersen, Nicole; Nichols, Rebecca M.; Stark, Craig E. L.; McGaugh, James L.; Loftus, Elizabeth F.

    2013-01-01

    The recent identification of highly superior autobiographical memory (HSAM) raised the possibility that there may be individuals who are immune to memory distortions. We measured HSAM participants' and age- and sex-matched controls' susceptibility to false memories using several research paradigms. HSAM participants and controls were both susceptible to false recognition of nonpresented critical lure words in an associative word-list task. In a misinformation task, HSAM participants showed hi...

  1. Myofibroblastic tumor associated to superior vena cava syndrome

    International Nuclear Information System (INIS)

    Ortega Jaramillo, Hector; Durango Gutierrez, Luisa Fernanda; Perez Figueroa, Maria del Pilar

    2005-01-01

    Inflammatory myofibroblastic tumor (IMT) is an uncommon pathological entity of unknown cause, composed of differentiated myofibroblastic cells accompanied by plasma cells, lymphocytes and eosinophils, which involve extrapulmonary and pulmonary tissues. IMT has an unpredictable clinical course, rarely undergoes malignant transformation. Local invasion and involvement of the mediastinum and hiliar structures are unusual manifestations; however; we reports a case of superior vena cava syndrome and IMT

  2. Conceptual and perceptual factors in the picture superiority effect

    OpenAIRE

    Stenberg, Georg

    2006-01-01

    The picture superiority effect, i.e. better memory for pictures than for corresponding words, has been variously ascribed to a conceptual or a perceptual processing advantage. The present study aimed to disentangle perceptual and conceptual contributions. Pictures and words were tested for recognition in both their original formats and translated into participants´ second language. Multinomial Processing Tree (Batchelder & Riefer, 1999) and MINERVA (Hintzman, 1984) models were fitted to t...

  3. Pseudoaneurysm of the superior gluteal artery following polytrauma

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Dennis [Vancouver General Hospital, University of British Columbia and Department of Radiology, Vancouver, BC (Canada); Legiehn, Gerald M. [Vancouver General Hospital, Interventional Radiology, University of British Columbia and Department of Radiology, Vancouver, BC (Canada); Munk, Peter L. [Vancouver General Hospital, MSK Section, University of British Columbia and Department of Radiology, Vancouver, BC (Canada)

    2007-09-15

    Gluteal artery aneurysms are rare and often secondary to pelvic fractures, blunt or penetrating trauma. We describe a case of a superior gluteal artery pseudoaneurysm that presented as back pain with numbness and weakness of the lower extremities. Diagnosis was confirmed by color Doppler sonography and angiography. A proximal and distal control was obtained over the aneurysm neck via coil embolization with excellent hemostasis within the pseudoaneurysm and maintenance of perfusion to the left pelvis. (orig.)

  4. Pseudoaneurysm of the superior gluteal artery following polytrauma

    International Nuclear Information System (INIS)

    Lee, Dennis; Legiehn, Gerald M.; Munk, Peter L.

    2007-01-01

    Gluteal artery aneurysms are rare and often secondary to pelvic fractures, blunt or penetrating trauma. We describe a case of a superior gluteal artery pseudoaneurysm that presented as back pain with numbness and weakness of the lower extremities. Diagnosis was confirmed by color Doppler sonography and angiography. A proximal and distal control was obtained over the aneurysm neck via coil embolization with excellent hemostasis within the pseudoaneurysm and maintenance of perfusion to the left pelvis. (orig.)

  5. Possible origin of superior corrosion resistance for electrodeposited nanocrystalline Ni

    International Nuclear Information System (INIS)

    Roy, I.; Yang, H.W.; Dinh, L.; Lund, I.; Earthman, J.C.; Mohamed, F.A.

    2008-01-01

    We present here for the first time observations that grain boundaries in electrodeposited (ED) nanocrystalline (nc) Ni are predominantly of Σ3 character. The results presented are based on orientation imaging microscopy (OIM) performed to produce electron backscatter diffraction (EBSD) maps. This large volume fraction of coherent low sigma coincidence site lattice (CSL) boundaries appears to be consistent with the superior corrosion resistance of ED nc-Ni in comparison with its coarse-grained counterpart

  6. Superior Mesenteric Artery Syndrome in a Young Military Basic Trainee

    Science.gov (United States)

    2013-03-01

    patients with severe anorexia nervosa.10 Severe cases may require surgery or parenteral feeding because of food avoidance leading to further loss of...retroperi- toneal fat. Treatment is usually conservative, via nutritional supplementation.11 Positional eating techniques may be effec- tive and include...2012. 10. Gwee K, Teh A, Huang C: Acute superior mesenteric artery syndrome and pancreatitis in anorexia nervosa. Australas Psychiatry 2010; 18(6): 523

  7. Superior Gas Sensing Properties of Monolayer PtSe2

    KAUST Repository

    Sajjad, Muhammad

    2016-12-15

    First-principles calculations of the structural and electronic properties of monolayer 1T-PtSe2 with adsorbed (a) NO2, (b) NO, (c) NH3, (d) H2O, (e) CO2, and (f) CO molecules are discussed. The results point to great potential of the material in gas sensor applications. Superior sensitivity is demonstrated by transport calculations using the nonequilibrium Green\\'s function method.

  8. Superior vesical fissure concealed by giant omphalocele: A case report

    OpenAIRE

    Hayek, Danial; Massanyi, Eric; Mancuso, Melissa; Krepkovich, Katherine; Garrison, Aaron

    2016-01-01

    Omphalocele is an abdominal wall defect characterized by exteriorization of abdominal viscera that is covered by a membrane. Omphalocele has a well-known association with chromosome abnormalities. Here we present a case of a superior vesical fissure (SVF) initially disguised as a giant omphalocele in a newborn with trisomy 18. We also show unique prenatal imaging and discuss the importance and limitations of prenatal genetic testing.

  9. Superior vesical fissure concealed by giant omphalocele: A case report

    Directory of Open Access Journals (Sweden)

    Danial Hayek

    2016-11-01

    Full Text Available Omphalocele is an abdominal wall defect characterized by exteriorization of abdominal viscera that is covered by a membrane. Omphalocele has a well-known association with chromosome abnormalities. Here we present a case of a superior vesical fissure (SVF initially disguised as a giant omphalocele in a newborn with trisomy 18. We also show unique prenatal imaging and discuss the importance and limitations of prenatal genetic testing.

  10. Selective amygdalohippocampectomy via trans-superior temporal gyrus keyhole approach

    OpenAIRE

    Mathon , Bertrand; Clemenceau , Stéphane

    2016-01-01

    International audience; BackgroundHippocampal sclerosis is the most common cause of drug-resistant epilepsy amenable for surgical treatment and seizure control. The rationale of the selective amygdalohippocampectomy is to spare cerebral tissue not included in the seizure generator.MethodDescribe the selective amygdalohippocampectomy through the trans-superior temporal gyrus keyhole approach.ConclusionSelective amygdalohippocampectomy for temporal lobe epilepsy is performed when the data (semi...

  11. Effect of bilateral superior oblique split lengthening on torsion

    Directory of Open Access Journals (Sweden)

    Jitendra Jethani

    2015-01-01

    Full Text Available Introduction: Superior oblique split lengthening (SOSL is done for weakening of superior oblique. It corrects the superior oblique overaction (SOOA and A pattern. Its effect on the torsion of the eye is not known. We present our data on the effect of this particular procedure on torsion. Materials and Methods: We did a study of 16 patients (32 eyes who underwent bilateral SOSL and compared the disc foveal angle (DFA preoperatively and postoperatively. The split lengthening was done from 4 mm to 7 mm depending upon the overaction of superior oblique. Results: The mean age was 15.3 ± 8.4 years. Mean preoperative DFA in the right eye (RE was −3.9° and in the left eye (LE was −2.9°. Mean postoperative DFA in RE was 0.2° and in LE was 0.9°. The mean change in the DFA for RE was 4.1° ± 1.3° and for LE was 3.8° ± 1.2°. All the patients were aligned horizontally within 6 prism diopter and no pattern and no diplopia postoperatively. The A pattern was corrected in all the patient postsurgery. For each mm of surgery, an improvement of 0.8° was seen in the DFA. Conclusion: We report the effect of SOSL on torsion. The SOSL reduces intorsion postsurgery and is, therefore, a valuable procedure in SOOA where both pattern and in torsion needs to be corrected.

  12. Information Superiority generated through proper application of Geoinformatics

    Science.gov (United States)

    Teichmann, F.

    2012-04-01

    Information Superiority generated through proper application of Geoinformatics Information management and especially geoscience information delivery is a very delicate task. If it is carried out successfully, geoscientific data will provide the main foundation of Information Superiority. However, improper implementation of geodata generation, assimilation, distribution or storage will not only waste valuable resources like manpower or money, but could also give rise to crucial deficiency in knowledge and might lead to potentially extremely harmful disasters or wrong decisions. Comprehensive Approach, Effect Based Operations and Network Enabled Capabilities are the current buzz terms in the security regime. However, they also apply to various interdisciplinary tasks like catastrophe relief missions, civil task operations or even in day to day business operations where geo-science data is used. Based on experience in the application of geoscience data for defence applications the following procedure or tool box for generating geodata should lead to the desired information superiority: 1. Understand and analyse the mission, the task and the environment for which the geodata is needed 2. Carry out a Information Exchange Requirement between the user or customer and the geodata provider 3. Implementation of current interoperability standards and a coherent metadata structure 4. Execute innovative data generation, data provision, data assimilation and data storage 5. Apply a cost-effective and reasonable data life cycle 6. Implement IT security by focusing of the three pillar concepts Integrity, Availability and Confidentiality of the critical data 7. Draft and execute a service level agreement or a memorandum of understanding between the involved parties 8. Execute a Continuous Improvement Cycle These ideas from the IT world should be transferred into the geoscience community and applied in a wide set of scenarios. A standardized approach of how to generate, provide

  13. A Rare Complication of Acute Appendicitis: Superior Mesenteric Vein Thrombosis

    Directory of Open Access Journals (Sweden)

    Hendra Koncoro

    2016-12-01

    Full Text Available Superior mesenteric vein (SMV thrombosis caused by acute appendicitis is quite rare nowadays. These conditions occurs secondary to infection in the region drained by the portal venous system. In this case, we report a successfully treated case of SMV thrombosis and liver abscess associated with appendicitis with antibiotics and anticoagulant.Early diagnosis and prompt treatment are basic to a favorable clinical course.

  14. A standardized surgical technique for rat superior cervical ganglionectomy

    DEFF Research Database (Denmark)

    Savastano, Luis Emilio; Castro, Analía Elizabeth; Fitt, Marcos René

    2010-01-01

    Superior cervical ganglionectomy (SCGx) is a valuable microsurgical model to study the role of the sympathetic nervous system in a vast array of physiological and pathological processes, including homeostatic regulation, circadian biology and the dynamics of neuronal dysfunction and recovery afte...... expect that the following standardized and optimized protocol will allow researchers to organize knowledge into a cohesive framework in those areas where the SCGx is applied....

  15. Superior metallic alloys through rapid solidification processing (RSP) by design

    Energy Technology Data Exchange (ETDEWEB)

    Flinn, J.E. [Idaho National Engineering Laboratory, Idaho Falls, ID (United States)

    1995-05-01

    Rapid solidification processing using powder atomization methods and the control of minor elements such as oxygen, nitrogen, and carbon can provide metallic alloys with superior properties and performance compared to conventionally processing alloys. Previous studies on nickel- and iron-base superalloys have provided the baseline information to properly couple RSP with alloy composition, and, therefore, enable alloys to be designed for performance improvements. The RSP approach produces powders, which need to be consolidated into suitable monolithic forms. This normally involves canning, consolidation, and decanning of the powders. Canning/decanning is expensive and raises the fabrication cost significantly above that of conventional, ingot metallurgy production methods. The cost differential can be offset by the superior performance of the RSP metallic alloys. However, without the performance database, it is difficult to convince potential users to adopt the RSP approach. Spray casting of the atomized molten droplets into suitable preforms for subsequent fabrication can be cost competitive with conventional processing. If the fine and stable microstructural features observed for the RSP approach are preserved during spray casing, a cost competitive product can be obtained that has superior properties and performance that cannot be obtained by conventional methods.

  16. Levels of processing and picture memory: the physical superiority effect.

    Science.gov (United States)

    Intraub, H; Nicklos, S

    1985-04-01

    Six experiments studied the effect of physical orienting questions (e.g., "Is this angular?") and semantic orienting questions (e.g., "Is this edible?") on memory for unrelated pictures at stimulus durations ranging from 125-2,000 ms. Results ran contrary to the semantic superiority "rule of thumb," which is based primarily on verbal memory experiments. Physical questions were associated with better free recall and cued recall of a diverse set of visual scenes (Experiments 1, 2, and 4). This occurred both when general and highly specific semantic questions were used (Experiments 1 and 2). Similar results were obtained when more simplistic visual stimuli--photographs of single objects--were used (Experiments 5 and 6). As in the case of the semantic superiority effect with words, the physical superiority effect for pictures was eliminated or reversed when the same physical questions were repeated throughout the session (Experiments 4 and 6). Conflicts with results of previous levels of processing experiments with words and nonverbal stimuli (e.g., faces) are explained in terms of the sensory-semantic model (Nelson, Reed, & McEvoy, 1977). Implications for picture memory research and the levels of processing viewpoint are discussed.

  17. DIGITAL STORYTELLING, EDUCAÇÃO SUPERIOR E LITERACIA DIGITAL

    Directory of Open Access Journals (Sweden)

    Josias Ricardo Hack

    2013-04-01

    Full Text Available O texto revisa e dialoga com autores de artigos e livros em Língua Inglesa e Língua Portuguesa sobre fundamentos técnicos da produção audiovisual, como o Digital Storytelling, a ser utilizada na educação superior e produzida pelos próprios interlocutores do processo de aprendizagem. O intuito é refletir sobre algumas características necessárias para se desenvolver uma experiência contextualizada com curtas histórias audiovisuais pessoais na aprendizagem de adultos. A metodologia de investigação é pautada em pesquisa bibliográfica nas bases de dados da Nottingham Trent University (Inglaterra e da Universidade Federal de Santa Catarina (Brasil. Os resultados do estudo apontam que certas habilidades, como a capacidade de construir uma narrativa e editar imagem, vídeo e som são requeridas dos envolvidos em educação superior em razão da inserção de múltiplas tecnologias digitais no cotidiano. Assim, a experiência prática de produção audiovisual educativa pode trazer a possibilidade de literacia digital pela realização de peças audiovisuais no processo de aprendizagem colaborativa de adultos. Palavras-chave: Histórias digitais. Digital Storytelling. Educação superior. Literacia digital. Aprendizagem de adultos.

  18. Hacia una educación superior inclusiva en Colombia

    Directory of Open Access Journals (Sweden)

    Sandra Lucia Arizabaleta Dominguez

    2016-12-01

    Full Text Available En este artículo se analizan concepciones teórico-conceptuales básicas que subyacen a la educación superior inclusiva, en el marco de los Lineamientos de la Política de Educación Superior Inclusiva del Ministerio de Educación Nacional de Colombia (men. Además, se plantean los desafíos que deben asumir las instituciones de educación superior (ies en la identificación de barreras de aprendizaje de su población estudiantil y la promoción de estrategias que garanticen la accesibilidad, permanencia, pertinencia académica y la graduación. Esta situación lleva a las ies a reflexionar y repensarse a partir de los procesos de autoevaluación institucional para crear estrategias participativas que promuevan la gestión inclusiva en un sistema educativo equitativo, pertinente y de calidad

  19. THE HUMAN SUBJECTIVITY BETWEEN THE SUPERIOR AND INFERIOR TYPES A SUBJETIVIDADE HUMANA ENTRE OS TIPOS SUPERIORES E INFERIORES

    Directory of Open Access Journals (Sweden)

    Vagner Silva

    2011-12-01

    Full Text Available This article attempts to solve the following contradiction of Nietzsche's thought: man has a subjective drive constitution, these drives, however, are individuals, and its being (the being of the drives, is constituted for more power fight (the will to power. Nietzsche's superior man (educated and cultivated man is that one, in which there is harmony in the drives, who can give greater freedom to its most terrible drives, without, however, loses the control over them. That is the contradiction: if man has to control the drives, they are not harmonics. There is incompatibility between harmony and control. In other words, the superior man is indeed the man of culture and cultivated man of Nietzsche? If the answer to this question is yes, then, in this man, reigns the drives harmony. If, on the other hand, the answer is no, then, for this man does not become a barbarian destroyer, dangerous to himself and to others it is necessary that a drive dominates the others. However it is not possible to escape the contradiction: either there is harmony in human drive or control.Este artigo busca resolver a seguinte contradição do pensamento de Nietzsche: o homem possui uma constituição subjetiva pulsional, estas pulsões, porém, são individuais, e o seu ser, o das pulsões, constitui-se da luta por mais poder (vontade de poder. O homem superior de Nietzsche (homem culto e cultivado é aquele no qual há harmonia nas pulsões, aquele que pode dar mais liberdade às suas mais terríveis pulsões, sem, no entanto, perder o controle sobre elas. Eis a contradição: se o homem superior exerce controle sobre as pulsões então elas não são harmônicas. Há, aqui, a incompatibilidade entre harmonia e controle. Em outros termos: o homem superior é de fato o homem culto e cultivado de Nietzsche? Se a resposta para esta pergunta for sim, então neste homem reina a harmonia pulsional. Se, por outro lado, a resposta for não, então, para que este homem n

  20. Superior facet syndrome. Findings on metrizamide CT myelography

    Energy Technology Data Exchange (ETDEWEB)

    Kubo, Yoshichika; Igarashi, Seishi; Koyama, Tsunemaro

    1985-02-01

    Sciatica caused by root entrapment in the lateral recess was named superior facet syndrome by Epstein in 1972. Few reports on this subject based on large numbers of cases have been documented to date. Of the patients with sciatica, 32 patients were diagnosed to have root entrapment at the lateral recess L5 or/and S1 lumbar spine. Out of 32 patients, 20 patients were operated on and the lateral entrapment was recognized in all of surgical cases. Neuroradiological findings, especially of metrizamide CT (met. CT), were documented in detail. Thirty two patients were classified in three types according to radiological findings. They were congenital or developmental, degenerative, and combined type, respectively. Fourteen cases belonged to the congenital type, 13 to the degenerative and 5 to the combined type. Each group had the mean ages of 23.4, 53.8, and 36.8 years old, respectively. Of 32 cases the entrapment occured in 47 L5 roots and 11 S1 roots. There was no remarkable laterality. In operation the unroofing of the lateral recess were done and the sciatica subsided postoperatively in all of surgical cases. Met. CT revealed extreme medial protrusion of the superior articular joint in 18 of 24 cases(75%) and none filling of the root in the lateral recess in 21 of 24 cases (87.5%). In the degenerative type, met. CT showed some degenerative changes that were hypertrophy or deformity of the articular joints and spur formation of the vertebral body. In contrast to met. CT, metrizamide myelography revealed only slight changes, which were poor filling of the root before it turned out the pedicle of lateral compression of the root. In plain films or lumbar spine articular joints at Lsub(4/5) were formed in coronal plane in 69% of cases of the L5 root entrapment. Met. CT using ReView technique was of great diagnostic value in superior facet syndrome.

  1. Characterization of the superior olivary complex of Canis lupus domesticus.

    Science.gov (United States)

    Fech, Tatiana; Calderón-Garcidueñas, Lilian; Kulesza, Randy J

    2017-08-01

    The superior olivary complex (SOC) is a collection of brainstem auditory nuclei which play essential roles in the localization of sound sources, temporal coding of vocalizations and descending modulation of the cochlea. Notwithstanding, the SOC nuclei vary considerably between species in accordance with the auditory needs of the animal. The canine SOC was subjected to anatomical and physiological examination nearly 50 years ago and was then virtually forgotten. Herein, we aimed to characterize the nuclei of the canine SOC using quantitative morphometrics, estimation of neuronal number, histochemistry for perineuronal nets and immunofluorescence for the calcium binding proteins calbindin and calretinin. We found the principal nuclei to be extremely well developed: the lateral superior olive (LSO) contained over 20,000 neurons and the medial superior olive (MSO) contained over 15,000 neurons. In nearly all non-chiropterian terrestrial mammals, the MSO exists as a thin, vertical column of neurons. The canine MSO was folded into a U-shaped contour and had associated with the ventromedial tip a small, round collection of neurons we termed the tail nucleus of the MSO. Further, we found evidence within the LSO, MSO and medial nucleus of the trapezoid body (MNTB) for significant morphological variations along the mediolateral or rostrocaudal axes. Finally, the majority of MNTB neurons were calbindin-immunopositive and associated with calretinin-immunopositive calyceal terminals. Together, these observations suggest the canine SOC complies with the basic plan of the mammalian SOC but possesses a number of unique anatomical features. Copyright © 2017 Elsevier B.V. All rights reserved.

  2. LA EDUCACIÓN SUPERIOR CUBANA: LOGROS Y PERSPECTIVAS

    Directory of Open Access Journals (Sweden)

    Acela Cantero Zayas

    2004-01-01

    Full Text Available El impetuoso desarrollo de la ciencia y la técnica contemporáneo en general y muy específicamente en la realidad cubana, está dirigido a satisfacer las necesidades creciente de nuestra sociedad, lo que conlleva a un continuo perfeccionamiento de todo el sistema educativo en correspondencia con las exigencias, demandas y necesidades de nuestro pueblo. En tal sentido, para comprender los resultados que exhibe la Educación cubana y dentro de ella la Educación Superior, se precisa de toda una reflexión histórica, como soporte lógico y metodológico del hecho educativo cubano. En la actualidad, el mayor impacto de nuestra Educación Superior, desde los puntos de vista social, político, económico y en especial formativo, lo constituye, el diseño e implementación del modelo de Universalización, el cual tiene como objetivo supremo la extensión de la Universidad a los distintos municipios del país, con la finalidad de irradiar cultura y saber, que son las únicas modalidades de garantizar un hombre libre y de hecho una sociedad independiente. En el presente trabajo se muestra una panorámica de la Educación Superior en Cuba, partiendo del elemento histórico hasta la contemporaneidad y en ésta, los nuevos retos impuestos por el contexto socio-político a escala mundial.

  3. Globalización de la educacion superior en Paraguay

    Directory of Open Access Journals (Sweden)

    Hugo Alfredo Recalde

    2013-12-01

    Full Text Available El inicio del  desarrollo e innovación del  sistema de Educación Superior en Paraguay nació en el año 1889 con la creación de la Universidad Nacional de Asunción,  siendo  la primera universidad Nacional  en el país y en 1960 la Universidad Católica Nuestra Señora de la Asunción, la primera universidad privada; desde entonces fue postergada la creación de Universidades en Paraguay por más de  100 años, causa el sistema de gobierno político implementado en aquel entonces, al no haber centro de estudios especializados también se postergo el desarrollo intelectual de las personas,  desde 1989 con la caída del sistema dictatorial se han abierto un abanico de posibilidades con la apertura de universidades privadas y públicas. Actualmente el Paraguay cuenta con 52 universidades en pleno funcionamiento de las cuales, 8 son universidades públicas  y 44 de administración privada, a esto podemos agregar un total de 11 carreras acreditadas a nivel MERCOSUR, certificaciones otorgadas mediante el Sistema de Acreditación Regional de Carreras Universitarias (ARCU-SUR, por la Agencia Nacional de Evaluación y Acreditación de la Educación Superior (ANEAES. Es evidente el cambio cuali – cuantitativo experimentado por el sistema de Educación Superior en Paraguay, acompañando de la mano a las tecnologías de la información y la educación que hacen una Globalización eficaz y eficiente del conocimiento.

  4. QUAL DEMOCRATIZAÇÃO DO ENSINO SUPERIOR?

    Directory of Open Access Journals (Sweden)

    François Dubet

    Full Text Available Esse artigo, resultante de uma conferência, discute traços do processo de democratização do ensino superior. Procura distinguir analiticamente várias dimensões da democratização, baseadas, por sua vez, em concepções diferentes da justiça: igualdade de oportunidades, meritocracia, utilidades e equidade dos procedimentos. Cada sociedade constrói modelos de democratização desse ensino. A massificação do ensino superior desempenhou papel democrático objetivo, favorável aos grupos sociais antes excluídos. Mas massificação não equivale à democratização. Todas as categorias sociais não se beneficiam da mesma forma da massificação. A democratização do acesso ao ensino superior não depende apenas das famílias. Depende também da estrutura geral do sistema educativo. A meritocracia acadêmica constrói uma hierarquia de competências que é também social, com forte impacto reprodutivo. As desigualdades de utilidade das diferentes formações têm impacto sobre o conjunto das desigualdades sociais. Os sistemas educativos implementam distintos procedimentos de seleção, de concessão de gratuidades, bolsas e auxílios, que podem ser considerados como mais ou menos equitativos segundo as normas de justiça que mobilizam.

  5. Concomitant Persistent Left Superior Vena Cava and Horseshoe Kidney

    Directory of Open Access Journals (Sweden)

    Faraz Jaffer

    2015-01-01

    Full Text Available Persistent left superior vena cava (PLSVC and horseshoe kidney (HSK are common congenital abnormalities; however presence of both in the same person is extremely rare. A patient with hepatitis C cirrhosis awaiting transplant presented with worsening liver dysfunction, diagnosed with acute renal failure secondary to hepatorenal syndrome, and required X-ray fluoroscopy guided tunneled venous catheter placement for hemodialysis. Review of imaging studies demonstrated coexistence of PLSVC and HSK. PLSVC in adulthood is usually incidental with the most common drainage pattern being without physiologic dysfunction. Isolated horseshoe kidney is still the most common of renal fusion anomalies; however etiology of coexistent PLSVC remains unknown.

  6. El lenguaje y la educación superior

    Directory of Open Access Journals (Sweden)

    Juan Carlos Vergara Silva

    2001-07-01

    Full Text Available En este artículo se plantea el análisis de algunos retos que genera la relación entre el lenguaje y la educación superior en una sociedad digital; así mismo, se establece cómo los usuarios de las nuevas tecnologías exigen al docente universitario un manejo efectivo de los lenguajes hipertextuales a fin de superar el esquema de "transmisor de información", heredado de los modelos tradicionales de educación.

  7. Is Yin-Yang Superior for Paradox Research?

    DEFF Research Database (Denmark)

    Li, Xin; Worm, Verner; Peihong, Xie

    2017-01-01

    Purpose The paper debunks Peter P. Li’s assertion that Yin-Yang is superior to any other cognitive frames or logical systems for paradox research. The purpose of this paper is to alert the Chinese indigenous management researchers to the danger of Chinese exceptionalism and over-confidence. Design...... of cultural exceptionalism and ethnocentrism can make cross-cultural communication and interaction smoother. Originality/value This paper is a rigorous critique on the “Yin-Yang being superior” assertion of Peter P. Li....

  8. I problemi di matematica della Scuola Normale Superiore di Pisa

    CERN Document Server

    Profeti, Alessandro

    1998-01-01

    Nasce come aggiornamento del volume precedente ("I problemi di Matematica della Scuola Normale", 1984) e raccoglie gli esercizi di matematica assegnati all'esame di ammissione alla Scuola Normale Superiore di Pisa dal 1985 al 1997, con la loro risoluzione. Per rendere più efficace lo scopo didattico viene anche presentata una scelta di problemi relativi al periodo precedente (1905-1984). Il libro si rivolge a studenti e docenti della Scuola Secondaria, e si chiude con un Glossario in cui vengono richiamati i termini usati.

  9. Do Interpreters Indeed Have Superior Working Memory in Interpreting

    Institute of Scientific and Technical Information of China (English)

    于飞

    2012-01-01

    With the frequent communications between China and western countries in the field of economy,politics and culture,etc,Inter preting becomes more and more important to people in all walks of life.This paper aims to testify the author’s hypothesis "professional interpreters have similar short-term memory with unprofessional interpreters,but they have superior working memory." After the illustration of literatures concerning with consecutive interpreting,short-term memory and working memory,experiments are designed and analysis are described.

  10. Extreme premature with persistent left superior vena cava.

    Science.gov (United States)

    Aboitiz-Rivera, Carlos Manuel; Blachman-Braun, Ruben; Parra-Pérez, Mariana Yazmin

    2017-10-01

    Persistent left superior vena cava (PLSVC) is a congenital anomaly, that results when there is an absence of the normal regression of the left common precardinal vein during embryogenesis. Usually, this anomaly remains asymptomatic, however, when the PLSVC drains into the left atrium this could lead to a right-to-left shunt. Additionally, this can result in inadvertent delivery of air or thrombus into the systemic circulation with potential neurologic, cardiac and renal complications. In this article, we present a case of an extreme premature Mexican newborn in which the diagnosis was made after placement of a percutaneous central venues catheter.

  11. El abandono en las etapas iniciales de los estudios superiores

    OpenAIRE

    Norma Zandomeni; Sandra Canale; Andrea Pacifico; Fernanda Pagura

    2016-01-01

    En este artículo se presenta una investigación sobre abandono de los estudios superiores realizada en una universidad argentina. Con un abordaje metodológico cuanti-cualitativo, se analizan datos secundarios y se recupera la perspectiva de distintos actores mediante talleres, encuestas y entrevistas. Se aborda el abandono que se produce en el proceso del ingreso y el generado en los dos primeros años, tanto en su cuantificación como en los factores que operan en el mismo. En el primer caso el...

  12. Superior Mesenteric Artery Dissection after Extracorporeal Shockwave Lithotripsy

    Directory of Open Access Journals (Sweden)

    Christos Bakoyiannis

    2012-01-01

    Full Text Available The use of shockwave lithotripsy is currently the mainstay of treatment in renal calculosis. Several complications including vessel injuries have been implied to extracorporeal shockwave lithotripsy. We report an isolated dissection of the superior mesenteric artery in a 60-year-old male presenting with abdominal pain which occurred three days after extracorporeal shockwave lithotripsy. The patient was treated conservatively and the abdominal pain subsided 24 hours later. The patient's history, the course of his disease, and the timing may suggest a correlation between the dissection and the ESWL.

  13. Origen de la Escuela Normal Superior de México

    OpenAIRE

    Patricia Ducoing

    2004-01-01

    En este texto se pretende analizar el origen universitario de la Escuela Normal Superior de México, en el marco del período denominado “porfiriato”, el cual, pese a haberse convertido en una dictadura, enarboló los principios de la ideología liberal, los que unidos al pensamiento positivista cotidiano, posibilitaron el desarrollo económico y social y particularmente, educativo, a través de la creación de instituciones y de programas que potenciaron la conformación de ...

  14. Superior and inferior vena cavae: Embryology, variants, and pathology

    International Nuclear Information System (INIS)

    Mendelson, D.S.; Mitty, H.; Janus, C.; Gendal, E.; Berson, B.

    1987-01-01

    The superior and inferior venae cavae may be involved in a host of disease processes. Knowledge of the normal anatomy and variants of these structures is valuable in interpreting plain films and the results of angiographic procedures and all cross-sectional modalities. The authors review the embryology of venae cavae and proceed to describe their normal anatomy and variants. An awareness of the variants can prevent mistaking variants for pathologic processes. Finally, the authors describe pathology involving these vessels and demonstrate the radiographic manifestations

  15. An auditory analog of the picture superiority effect.

    Science.gov (United States)

    Crutcher, Robert J; Beer, Jenay M

    2011-01-01

    Previous research has found that pictures (e.g., a picture of an elephant) are remembered better than words (e.g., the word "elephant"), an empirical finding called the picture superiority effect (Paivio & Csapo. Cognitive Psychology 5(2):176-206, 1973). However, very little research has investigated such memory differences for other types of sensory stimuli (e.g. sounds or odors) and their verbal labels. Four experiments compared recall of environmental sounds (e.g., ringing) and spoken verbal labels of those sounds (e.g., "ringing"). In contrast to earlier studies that have shown no difference in recall of sounds and spoken verbal labels (Philipchalk & Rowe. Journal of Experimental Psychology 91(2):341-343, 1971; Paivio, Philipchalk, & Rowe. Memory & Cognition 3(6):586-590, 1975), the experiments reported here yielded clear evidence for an auditory analog of the picture superiority effect. Experiments 1 and 2 showed that sounds were recalled better than the verbal labels of those sounds. Experiment 2 also showed that verbal labels are recalled as well as sounds when participants imagine the sound that the word labels. Experiments 3 and 4 extended these findings to incidental-processing task paradigms and showed that the advantage of sounds over words is enhanced when participants are induced to label the sounds.

  16. Cognitive abilities and superior decision making under risk

    Directory of Open Access Journals (Sweden)

    Edward T. Cokely

    2009-02-01

    Full Text Available Individual differences in cognitive abilities and skills can predict normatively superior and logically consistent judgments and decisions. The current experiment investigates the processes that mediate individual differences in risky choices. We assessed working memory span, numeracy, and cognitive impulsivity and conducted a protocol analysis to trace variations in conscious deliberative processes. People higher in cognitive abilities made more choices consistent with expected values; however, expected-value choices rarely resulted from expected-value calculations. Instead, the cognitive ability and choice relationship was mediated by the number of simple considerations made during decision making --- e.g., transforming probabilities and considering the relative size of gains. Results imply that, even in simple lotteries, superior risky decisions associated with cognitive abilities and controlled cognition can reflect metacognitive dynamics and elaborative heuristic search processes, rather than normative calculations. Modes of cognitive control (e.g., dual process dynamics and implications for process models of risky decision-making (e.g., priority heuristic are discussed.

  17. Visual sensitivity of deepwater fishes in Lake Superior.

    Directory of Open Access Journals (Sweden)

    Kelly A Harrington

    Full Text Available The predator-prey interactions in the offshore food web of Lake Superior have been well documented, but the sensory systems mediating these interactions remain unknown. The deepwater sculpin, (Myoxocephalus thompsoni, siscowet (Salvelinus namaycush siscowet, and kiyi (Coregonus kiyi inhabit low light level environments. To investigate the potential role of vision in predator-prey interactions, electroretinography was used to determine visual sensitivity for each species. Spectral sensitivity curves revealed peak sensitivity at 525 nm for each species which closely corresponds to the prevalent downwelling light spectrum at depth. To determine if sufficient light was available to mediate predator-prey interactions, visual sensitivity was correlated with the intensity of downwelling light in Lake Superior to construct visual depth profiles for each species. Sufficient daytime irradiance exists for visual interactions to approximately 325 m for siscowet and kiyi and 355 m for the deepwater sculpin during summer months. Under full moon conditions, sufficient irradiance exists to elicit ERG response to light available at approximately 30 m for the siscowet and kiyi and 45 m for the deepwater sculpin. Visual interactions are therefore possible at the depths and times when these organisms overlap in the water column indicating that vision may play a far greater role at depth in deep freshwater lakes than had been previously documented.

  18. Spontaneous Superior Mesenteric Artery Branch Pseudoaneurysm: A Rare Case Report

    Directory of Open Access Journals (Sweden)

    Mina Guirgis

    Full Text Available : Background: Visceral arterial pseudoaneurysms (VAPAs are rare vascular entities with serious consequences. Traditionally, they are associated with trauma, infection, and inflammatory disease, or they can arise as a post-operative complication. Report: An 87 year old man presented with abdominal pain and was found to have a spontaneous VAPA on a computed tomography angiogram. Serial imaging 4 months previously had demonstrated no aneurysm. Between scans, warfarin was changed to apixaban for aortic valve replacement, but he had no other changes to any other medications. He required urgent endovascular coiling of the pseudoaneurysm, with satisfactory recovery and outcome. Discussion: VAPAs are extremely rare, with splenic artery VAPAs the most commonly reported. Regardless, fewer than 250 cases of splenic artery pseudoaneurysm have been reported. Superior mesenteric artery (SMA pseudoaneurysms are the rarest type of VAPAs. Early identification and urgent treatment are warranted because of the associated high mortality risk, with a 50% risk of rupture in any given VAPA. Treatment options range from open operation to endoscopic and endovascular procedures. Apixaban has been proposed to contribute to pseudoaneurysm formation by slow and continuous bleeding that results in the formation of the pseudoaneurysm. Conclusions: Spontaneous VAPAs are extremely rare and this is the first time a VAPA has been associated with the novel oral anticoagulant “apixaban”. Urgent management of any VAPAs is important because of the high risk of rupture and potential life threatening haemorrhage. Keywords: Visceral arterial pseudoaneurysm, Superior mesenteric artery, Apixaban, Coils

  19. Development of superior radiation resistant materials and cables. 2

    Energy Technology Data Exchange (ETDEWEB)

    Ikehara, Junichiro; Kanemitsuya, Kazuhiko; Ohara, Hideo; Araki, Syogo; Hamachi, Katsuhiko [Mitsubishi Cable Industries Ltd., Tokyo (Japan)

    1996-01-01

    Many nuclear power plants have been constructed in Japan and electric power generation is now highly dependent on this technology. Therefore, the needs for facilities that will enrich and reprocess nuclear fuel from nuclear power stations will be high. As there are areas with high levels of radiation, the cables which can be used in these environments are needed. We have developed a superior radiation-resistant cable which uses halogen flame-retardant materials. This radiation-resistant cable consists of Ethylene-propylene rubber (EPDM) insulation and Chlorosulfonated polyethylene (CSM) sheath can be safely used in areas with high levels of radiation. We developed this product to aid in disaster prevention. Non-halogen, flame-retardant EPDM is used for the insulation, and low-halogen, flame-retardant CSM and new non-halogen, flame-retardant materials are used for the sheath. These cables have superior flame-retardant properties and generate little smoke on corrosive gas. This products can hence reduce the danger of a secondary disaster in a fire. We expect that these cables will find application in areas with high levels of radiation. (author).

  20. Notas sobre o CNE e a qualidade do ensino superior

    Directory of Open Access Journals (Sweden)

    Weber Silke

    2002-01-01

    Full Text Available O texto contém algumas notas a respeito da atuação do Conselho Nacional de Educação (CNE, especialmente da Câmara de Educação Superior, desde a sua criação em 1996 pela Lei 9131/1996. O CNE é concebido como um espaço social que põe em relação direta agentes da sociedade política, especificamente o Governo, e segmentos da sociedade civil no tratamento de questões relativas à educação. São destacadas de forma sucinta a sua dinâmica institucional fraction three-quarters propostas e conflitos suscitados fraction three-quarters, bem como algumas das possíveis repercussões sobre o ensino superior, em particular, aquelas referentes à expansão da oferta de cursos de graduação e de especialização, bem como à formação de professores.

  1. Superior pre-attentive auditory processing in musicians.

    Science.gov (United States)

    Koelsch, S; Schröger, E; Tervaniemi, M

    1999-04-26

    The present study focuses on influences of long-term experience on auditory processing, providing the first evidence for pre-attentively superior auditory processing in musicians. This was revealed by the brain's automatic change-detection response, which is reflected electrically as the mismatch negativity (MMN) and generated by the operation of sensoric (echoic) memory, the earliest cognitive memory system. Major chords and single tones were presented to both professional violinists and non-musicians under ignore and attend conditions. Slightly impure chords, presented among perfect major chords elicited a distinct MMN in professional musicians, but not in non-musicians. This demonstrates that compared to non-musicians, musicians are superior in pre-attentively extracting more information out of musically relevant stimuli. Since effects of long-term experience on pre-attentive auditory processing have so far been reported for language-specific phonemes only, results indicate that sensory memory mechanisms can be modulated by training on a more general level.

  2. A Cognitive Assessment of Highly Superior Autobiographical Memory

    Science.gov (United States)

    LePort, Aurora K.R.; Stark, Shauna M.; McGaugh, James L.; Stark, Craig E.L.

    2017-01-01

    Highly Superior Autobiographical Memory (HSAM) is characterized as the ability to accurately recall an exceptional number of experiences and their associated dates from events occurring throughout much of one’s lifetime. The source of this ability has only begun to be explored. The present study explores whether other enhanced cognitive processes may be critical influences underlying HSAM abilities. We investigated whether enhanced abilities in the domains of verbal fluency, attention/inhibition, executive functioning, mnemonic discrimination, perception, visual working memory, or the processing of and memory for emotional details might contribute critically to HSAM. The results suggest that superior cognitive functioning is an unlikely basis of HSAM, as only modest advantages were found in only a few tests. In addition, we examined HSAM subjects’ memory of the testing episodes. Interestingly, HSAM participants recalled details of their own experiences far better than those experiences that the experimenter shared with them. These findings provide additional evidence that HSAM involves, relatively selectively, recollection of personal, autobiographical material. PMID:26982996

  3. Superior Cross-Species Reference Genes: A Blueberry Case Study

    Science.gov (United States)

    Die, Jose V.; Rowland, Lisa J.

    2013-01-01

    The advent of affordable Next Generation Sequencing technologies has had major impact on studies of many crop species, where access to genomic technologies and genome-scale data sets has been extremely limited until now. The recent development of genomic resources in blueberry will enable the application of high throughput gene expression approaches that should relatively quickly increase our understanding of blueberry physiology. These studies, however, require a highly accurate and robust workflow and make necessary the identification of reference genes with high expression stability for correct target gene normalization. To create a set of superior reference genes for blueberry expression analyses, we mined a publicly available transcriptome data set from blueberry for orthologs to a set of Arabidopsis genes that showed the most stable expression in a developmental series. In total, the expression stability of 13 putative reference genes was evaluated by qPCR and a set of new references with high stability values across a developmental series in fruits and floral buds of blueberry were identified. We also demonstrated the need to use at least two, preferably three, reference genes to avoid inconsistencies in results, even when superior reference genes are used. The new references identified here provide a valuable resource for accurate normalization of gene expression in Vaccinium spp. and may be useful for other members of the Ericaceae family as well. PMID:24058469

  4. Superior cross-species reference genes: a blueberry case study.

    Directory of Open Access Journals (Sweden)

    Jose V Die

    Full Text Available The advent of affordable Next Generation Sequencing technologies has had major impact on studies of many crop species, where access to genomic technologies and genome-scale data sets has been extremely limited until now. The recent development of genomic resources in blueberry will enable the application of high throughput gene expression approaches that should relatively quickly increase our understanding of blueberry physiology. These studies, however, require a highly accurate and robust workflow and make necessary the identification of reference genes with high expression stability for correct target gene normalization. To create a set of superior reference genes for blueberry expression analyses, we mined a publicly available transcriptome data set from blueberry for orthologs to a set of Arabidopsis genes that showed the most stable expression in a developmental series. In total, the expression stability of 13 putative reference genes was evaluated by qPCR and a set of new references with high stability values across a developmental series in fruits and floral buds of blueberry were identified. We also demonstrated the need to use at least two, preferably three, reference genes to avoid inconsistencies in results, even when superior reference genes are used. The new references identified here provide a valuable resource for accurate normalization of gene expression in Vaccinium spp. and may be useful for other members of the Ericaceae family as well.

  5. Adjuvant chemotherapy compliance is not superior after thoracoscopic lobectomy

    DEFF Research Database (Denmark)

    Licht, Peter B; Schytte, Tine; Jakobsen, Erik

    2014-01-01

    BACKGROUND: It is generally assumed that patient compliance with adjuvant chemotherapy is superior after video-assisted thoracoscopic surgery compared with open lobectomy for non-small cell lung cancer (NSCLC). The level of evidence for this assumption, however, is limited to single-institution, ......BACKGROUND: It is generally assumed that patient compliance with adjuvant chemotherapy is superior after video-assisted thoracoscopic surgery compared with open lobectomy for non-small cell lung cancer (NSCLC). The level of evidence for this assumption, however, is limited to single...... adjuvant chemotherapy and 121 (38.7%) completed all four cycles. Ordinal logistic regression revealed that chemotherapy compliance (none, partial, and full chemotherapy) was significantly reduced by the patient's age (p....02). No significant difference between video-assisted thoracoscopic surgery and thoracotomy was seen regarding chemotherapy compliance (p=0.17), number of chemotherapy cycles (p=0.60), or time from surgery to chemotherapy (p = 0.41). CONCLUSIONS: Complete national data do not support the widespread assumption...

  6. Development of superior radiation resistant materials and cables. 2

    International Nuclear Information System (INIS)

    Ikehara, Junichiro; Kanemitsuya, Kazuhiko; Ohara, Hideo; Araki, Syogo; Hamachi, Katsuhiko

    1996-01-01

    Many nuclear power plants have been constructed in Japan and electric power generation is now highly dependent on this technology. Therefore, the needs for facilities that will enrich and reprocess nuclear fuel from nuclear power stations will be high. As there are areas with high levels of radiation, the cables which can be used in these environments are needed. We have developed a superior radiation-resistant cable which uses halogen flame-retardant materials. This radiation-resistant cable consists of Ethylene-propylene rubber (EPDM) insulation and Chlorosulfonated polyethylene (CSM) sheath can be safely used in areas with high levels of radiation. We developed this product to aid in disaster prevention. Non-halogen, flame-retardant EPDM is used for the insulation, and low-halogen, flame-retardant CSM and new non-halogen, flame-retardant materials are used for the sheath. These cables have superior flame-retardant properties and generate little smoke on corrosive gas. This products can hence reduce the danger of a secondary disaster in a fire. We expect that these cables will find application in areas with high levels of radiation. (author)

  7. Superior and ICG - is there a good side to this?

    International Nuclear Information System (INIS)

    Jeffrey, S.

    1998-01-01

    The issue of whether the proposed merger between Superior Propane and ICG is in the best interest of the consumer was discussed. Petro-Canada, one of Canada's largest integrated oil and gas companies owns ICG. Norcen, a Canadian producer now owned by Union Pacific Resources, used to own Superior Propane. The merger of the two operations, which was driven by a rush to decrease competition, represents a total Canadian market share of 70 per cent or almost 2.5 billion litres of propane per year. Proponents of the merger argue that increased buying power will mean better prices at the plant gate, which will benefit the consumer. Opponents, on the other hand, argue that with low margins to combat, any savings realized will stay in the hands of the newly merged company. The bright side is that despite a huge market share of the newly merged company, there is still a potential to create small companies which understand their local market and which can provide customers with the kind of service they want

  8. Happy Face Superiority Effect in Change Detection Paradigm

    Directory of Open Access Journals (Sweden)

    Domagoj Švegar

    2013-09-01

    Full Text Available The aim of the present study was to investigate which affective component guides cognitive processing of emotional facial expressions. According to the threat hypothesis, processing of angry faces is prioritized by the human cognitive system, because rapid detection of threat has a large adaptive value. The negativity hypothesis presumes that distressing emotional experiences of other people attract attention, regardless of whether they represent danger or not. The emotionality hypothesis proposes that positive emotional facial expressions can capture attention as effective as negative ones, while the happy face superiority hypothesis predicts that happy faces are prioritized. In the present study, which was conducted on 24 participants, change detection paradigm was used, because that procedure enables insight into the later stage of information processing. The results obtained show that happy facial expressions are heavily prioritized by the human cognitive system. In explanation of these results, that clearly support the happy face superiority hypothesis, we propose that angry expressions are initially prioritized by our cognitive system, because we benefit from early detection of potential threat in the environment, but in later cognitive processing, happy expressions are given the priority, because smiling is a valuable mechanism for forming and maintaining cooperative relationships. Besides the theoretical relevance, the present study is also valuable methodologically, because we demonstrated that change detection paradigm can be efficiently used for the research of emotional facial expressions processing.

  9. Origen de la Escuela Normal Superior de México

    Directory of Open Access Journals (Sweden)

    Patricia Ducoing

    2004-01-01

    Full Text Available En este texto se pretende analizar el origen universitario de la Escuela Normal Superior de México, en el marco del período denominado “porfiriato”, el cual, pese a haberse convertido en una dictadura, enarboló los principios de la ideología liberal, los que unidos al pensamiento positivista cotidiano, posibilitaron el desarrollo económico y social y particularmente, educativo, a través de la creación de instituciones y de programas que potenciaron la conformación de un discurso pedagógico moderno. La Escuela Normal Superior nace, en el seno de la Universidad Nacional, como expresión de un proyecto político-cultural que integra las aspiraciones de la época en materia educativa: la organización y homogeneización de un sistema de formación de profesores que contribuyera a garantizar la ruptura con los postulados y símbolos del régimen colonial, los cuales habrían de ser suplantados por otros: la unidad, la cientificidad, el pragmatismo y la secularidad -entre otros-.

  10. Biomechanical Effects of Acromioplasty on Superior Capsule Reconstruction for Irreparable Supraspinatus Tendon Tears.

    Science.gov (United States)

    Mihata, Teruhisa; McGarry, Michelle H; Kahn, Timothy; Goldberg, Iliya; Neo, Masashi; Lee, Thay Q

    2016-01-01

    Acromioplasty is increasingly being performed for both reparable and irreparable rotator cuff tears. However, acromioplasty may destroy the coracoacromial arch, including the coracoacromial ligament, consequently causing a deterioration in superior stability even after superior capsule reconstruction. The purpose of this study was to investigate the effects of acromioplasty on shoulder biomechanics after superior capsule reconstruction for irreparable supraspinatus tendon tears. The hypothesis was that acromioplasty with superior capsule reconstruction would decrease the area of subacromial impingement without increasing superior translation and subacromial contact pressure. Controlled laboratory study. Seven fresh-frozen cadaveric shoulders were evaluated using a custom shoulder testing system. Glenohumeral superior translation, the location of the humeral head relative to the glenoid, and subacromial contact pressure and area were compared among 4 conditions: (1) intact shoulder, (2) irreparable supraspinatus tendon tear, (3) superior capsule reconstruction without acromioplasty, and (4) superior capsule reconstruction with acromioplasty. Superior capsule reconstruction was performed using the fascia lata. Compared with the intact shoulder, the creation of an irreparable supraspinatus tear significantly shifted the humeral head superiorly in the balanced muscle loading condition (without superior force applied) (0° of abduction: 2.8-mm superior shift [P = .0005]; 30° of abduction: 1.9-mm superior shift [P = .003]) and increased both superior translation (0° of abduction: 239% of intact [P = .04]; 30° of abduction: 199% of intact [P = .02]) and subacromial peak contact pressure (0° of abduction: 308% of intact [P = .0002]; 30° of abduction: 252% of intact [P = .001]) by applying superior force. Superior capsule reconstruction without acromioplasty significantly decreased superior translation (0° of abduction: 86% of intact [P = .02]; 30° of abduction: 75

  11. Mechanism of the superior mechanical strength of nanometer-sized metal single crystals revealed

    KAUST Repository

    Afify, N. D.; Salem, H. G.; Yavari, A.; El Sayed, Tamer S.

    2013-01-01

    Clear understanding of the superior mechanical strength of nanometer-sized metal single crystals is required to derive advanced mechanical components retaining such superiority. Although high quality studies have been reported on nano

  12. Programa de Formação Interdisciplinar Superior: um novo caminho para a educação superior

    Directory of Open Access Journals (Sweden)

    Cibele Y. Andrade

    Full Text Available Apresenta o Programa de Formação Interdisciplinar Superior (ProFIS, curso de nível superior implantado na Universidade Estadual de Campinas (Unicamp em 2011. Primeiramente, são citados os objetivos e as diretrizes que nortearam a criação do curso - aumento do ingresso de alunos de escolas públicas na universidade e a adoção de um programa de formação geral - e, em seguida, descritos, em linhas gerais, o novo curso, seu currículo e o processo de transferência dos alunos concluintes do ProFIS para os cursos de graduação da Unicamp. Conclui apresentando uma análise sobre o critério de seleção adotado, bem como alguns dados estatísticos que revelam que os propósitos de inclusão social foram plenamente alcançados pela primeira turma matriculada no programa.

  13. Coastal geology and recent origins for Sand Point, Lake Superior

    Science.gov (United States)

    Fisher, Timothy G.; Krantz, David E.; Castaneda, Mario R.; Loope, Walter L.; Jol, Harry M.; Goble, Ronald J.; Higley, Melinda C.; DeWald, Samantha; Hansen, Paul

    2014-01-01

    Sand Point is a small cuspate foreland located along the southeastern shore of Lake Superior within Pictured Rocks National Lakeshore near Munising, Michigan. Park managers’ concerns for the integrity of historic buildings at the northern periphery of the point during the rising lake levels in the mid-1980s greatly elevated the priority of research into the geomorphic history and age of Sand Point. To pursue this priority, we recovered sediment cores from four ponds on Sand Point, assessed subsurface stratigraphy onshore and offshore using geophysical techniques, and interpreted the chronology of events using radiocarbon and luminescence dating. Sand Point formed at the southwest edge of a subaqueous platform whose base is probably constructed of glacial diamicton and outwash. During the post-glacial Nipissing Transgression, the base was mantled with sand derived from erosion of adjacent sandstone cliffs. An aerial photograph time sequence, 1939–present, shows that the periphery of the platform has evolved considerably during historical time, infl uenced by transport of sediment into adjacent South Bay. Shallow seismic refl ections suggest slump blocks along the leading edge of the platform. Light detection and ranging (LiDAR) and shallow seismic refl ections to the northwest of the platform reveal large sand waves within a deep (12 m) channel produced by currents fl owing episodically to the northeast into Lake Superior. Ground-penetrating radar profi les show transport and deposition of sand across the upper surface of the platform. Basal radiocarbon dates from ponds between subaerial beach ridges range in age from 540 to 910 cal yr B.P., suggesting that Sand Point became emergent during the last ~1000 years, upon the separation of Lake Superior from Lakes Huron and Michigan. However, optically stimulated luminescence (OSL) ages from the beach ridges were two to three times as old as the radiocarbon ages, implying that emergence of Sand Point may have begun

  14. Surgical Results in Unilateral Superior Oblique Muscle Palsy

    Directory of Open Access Journals (Sweden)

    Aylin Tenlik

    2014-08-01

    Full Text Available Objectives: To evaluate the surgical treatments and results of the patients with superior oblique muscle palsy (SOMP. Materials and Methods: Clinical charts of the patients with unilateral SOMP who were operated in our clinic between 1999 and 2009 were evaluated retrospectively. Patients’ demographics, preoperative signs, surgical procedure, complications, and final results were recorded. Results: Thirty-seven patients were included in the study, [21 (59% male, 15 (41% female]. The mean age was 20.6 years at the time of operation. The mean time interval between diagnosis and operation was 7.3 years. Postoperative follow-up period was 2.04 (ranging 1-10 years. Diplopia was determined in seven (18.9% patients, and abnormal head position in 36 (97.3% patients. Only inferior oblique tenotomy with distal muscle resection was performed in 25 patients. In addition, five patients had recession of the contralateral inferior rectus muscle and two patients had recession of the ipsilateral superior rectus muscle additional to inferior oblique tenotomy. Abnormal head position was completely improved in all of the patients postoperatively. The preoperative average score of the inferior oblique muscle (IOM overaction was +3.3±0.8, and postoperative overaction was found in only two patients (+1.5. There was statistically significant difference between the two periods (p<0.001. The average score of the superior oblique muscle hypofunction was -2.18 preoperatively, and in only three patients, the score was found -1.0 postoperatively. Difference between the two periods was statistically significant (p<0.001. While the preoperative average vertical deviation was 22 PD in primary position, none of the patients had hyperdeviation postoperatively. Diplopia was resolved in all seven affected patients postoperatively. Contralateral IOM hyperfunction was the most common complication (13.5%. Adherence syndrome was seen in none of the patients. Conclusion: It was found

  15. Chronic dissection of the superior mesenteric artery: case report

    International Nuclear Information System (INIS)

    Common, A.A.; Pressacco, J.

    1999-01-01

    Acute dissection of the thoracic aorta is a well-recognized, often fatal condition that frequently extends to involve the abdominal aorta and iliac vessels. The ostia of the renal and mesenteric vessels may be compromised, and the resulting visceral ischemia may necessitate surgical intervention. However, visceral perfusion may be restored if blood flow from true to false lumen is re-established or if the false lumen is obliterated, either spontaneously or by surgical or interventional techniques. Isolated dissections of mesenteric, renal, and carotid vessels are rarely reported. These may be spontaneous, related to high blood pressure and underlying disease of the vessel wall, or caused by abdominal trauma or medical intervention, including angiographic procedures. They are usually associated with pain and other signs and symptoms of ischemia in the appropriate territory. We present a case of chronic superior mesenteric artery (SMA) dissection, an incidental angiographic finding, in an asymptomatic patient being evaluated for resection of an abdominal aortic aneurysm (AAA). (author)

  16. Chronic dissection of the superior mesenteric artery: case report

    Energy Technology Data Exchange (ETDEWEB)

    Common, A.A.; Pressacco, J. [Univ. of Toronto, St. Michael' s Hospital, Dept. of Medical Imaging, Toronto, Ontario (Canada)

    1999-02-01

    Acute dissection of the thoracic aorta is a well-recognized, often fatal condition that frequently extends to involve the abdominal aorta and iliac vessels. The ostia of the renal and mesenteric vessels may be compromised, and the resulting visceral ischemia may necessitate surgical intervention. However, visceral perfusion may be restored if blood flow from true to false lumen is re-established or if the false lumen is obliterated, either spontaneously or by surgical or interventional techniques. Isolated dissections of mesenteric, renal, and carotid vessels are rarely reported. These may be spontaneous, related to high blood pressure and underlying disease of the vessel wall, or caused by abdominal trauma or medical intervention, including angiographic procedures. They are usually associated with pain and other signs and symptoms of ischemia in the appropriate territory. We present a case of chronic superior mesenteric artery (SMA) dissection, an incidental angiographic finding, in an asymptomatic patient being evaluated for resection of an abdominal aortic aneurysm (AAA). (author)

  17. Globalización de la educacion superior en Paraguay

    OpenAIRE

    Hugo Alfredo Recalde; Willian Cantero Lusardi; Juan Angel Jara Acosta

    2013-01-01

    El inicio del  desarrollo e innovación del  sistema de Educación Superior en Paraguay nació en el año 1889 con la creación de la Universidad Nacional de Asunción,  siendo  la primera universidad Nacional  en el país y en 1960 la Universidad Católica Nuestra Señora de la Asunción, la primera universidad privada; desde entonces fue postergada la creación de Universidades en Paraguay por más de  100 años, causa el sistema de gobierno político implementado en aquel entonces, al no haber centro de...

  18. Superior optical nonlinearity of an exceptional fluorescent stilbene dye

    Energy Technology Data Exchange (ETDEWEB)

    He, Tingchao [College of Physics Science and Technology, Shenzhen University, Shenzhen 518060 (China); Division of Physics and Applied Physics, Centre for Disruptive Photonic Technologies (CDPT), School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371 (Singapore); Sreejith, Sivaramapanicker; Zhao, Yanli [Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371 (Singapore); Gao, Yang; Grimsdale, Andrew C. [School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore 639798 (Singapore); Lin, Xiaodong, E-mail: linxd@szu.edu.cn, E-mail: hdsun@ntu.edu.sg [College of Physics Science and Technology, Shenzhen University, Shenzhen 518060 (China); Sun, Handong, E-mail: linxd@szu.edu.cn, E-mail: hdsun@ntu.edu.sg [Division of Physics and Applied Physics, Centre for Disruptive Photonic Technologies (CDPT), School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371 (Singapore)

    2015-03-16

    Strong multiphoton absorption and harmonic generation in organic fluorescent chromophores are, respectively, significant in many fields of research. However, most of fluorescent chromophores fall short of the full potential due to the absence of the combination of such different nonlinear upconversion behaviors. Here, we demonstrate that an exceptional fluorescent stilbene dye could exhibit efficient two- and three-photon absorption under the excitation of femtosecond pulses in solution phase. Benefiting from its biocompatibility and strong excited state absorption behavior, in vitro two-photon bioimaging and superior optical limiting have been exploited, respectively. Simultaneously, the chromophore could generate efficient three-photon excited fluorescence and third-harmonic generation (THG) when dispersed into PMMA film, circumventing the limitations of classical fluorescent chromophores. Such chromophore may find application in the production of coherent light sources of higher photon energy. Moreover, the combination of three-photon excited fluorescence and THG can be used in tandem to provide complementary information in biomedical studies.

  19. Superior orbital fissure syndrome in herpes zoster ophthalmicus.

    LENUS (Irish Health Repository)

    Kirwan, R P

    2012-02-01

    AIM: To report a case of superior orbital fissure syndrome (SOFS) in a patient with herpes zoster ophthalmicus (HZO). MATERIALS AND METHODS: A case report. RESULTS: A 71-year-old male with HZO presented acutely to accident and emergency complaining of right vision loss, double vision and drowsiness. The right visual acuity was counting fingers. There was no relative afferent pupillary defect. He had interstitial keratitis, ptosis, proptosis and total ophthalmoplaegia. The signs indicated HZO complicated by SOFS. Brain imaging and lumbar puncture confirmed the diagnosis of varicella zoster encephalitis. Systemic acyclovir and prednisolone led to recovery of visual acuity and ocular motility in addition to resolution of his proptosis and ptosis. CONCLUSION: SOFS is a rare complication of herpes zoster infection. With the appropriate treatment and follow-up, patients may be reassured that recovery of their visual acuity and ocular motility will occur.

  20. Abordagem do marketing de relacionamento no ensino superior

    OpenAIRE

    Nunes, Getúlio Tadeu; Lanzer, Edgar Augusto; Serra, Fernando Ribeiro; Ferreira, Manuel Portugal

    2008-01-01

    O artigo apresenta uma análise do atual cenário competitivo do Ensino Superior brasileiro, com o objetivo de demonstrar que a utilização de estratégias de marketing é um fator crítico de sucesso para essas organizações. O trabalho trata da existência de barreiras contra uma abordagem de marketing nas universidades, fruto de um modelo de gestão acadêmica desenvolvido tendo como base um mercado sem competição, comprovando que há uma resistência contra o uso de estratégias mercadológica...

  1. Firm-specific information, analysts’ superiority and investment value

    Institute of Scientific and Technical Information of China (English)

    Lu; Li; Erjia; Yang; Tusheng; Xiao

    2014-01-01

    Using a sample of Chinese security analysts’recommendations from 2005 to2010,we examine the source of analysts’superiority and the investment value of their recommendations.Using a calendar-time portfolio approach,we find that,on average,analysts’recommendations are valuable and that analysts are better at analyzing and transferring firm-specific information than market-wide or industry-level information.In addition,we show that the investment value of recommendations increases as firm-specific information becomes more important in stock pricing.Our empirical results are useful in guiding investors and helping brokerage houses to evaluate the output of research departments.

  2. The reproduction of lake trout in southern Lake Superior

    Science.gov (United States)

    Eschmeyer, Paul H.

    1955-01-01

    The principal spawning grounds of lake trout (Salvelinus namaycush namaycush) in United States waters of southern Lake Superior are on rocky shoals at depths of less than 20 fathoms. Most spawning occurs in October and early November. Of the mature fish collected on or near the spawning grounds, 60 to 69 percent were males. Among mature fish the average length of females was greater than that of males; few males less than 24 inches or females less than 26 inches in total length were caught. Recoveries of lake trout tagged on the spawning grounds showed that some males remained in the immediate area for a period of several weeks during the spawning season. Marked fish showed a tendency to return during later years to spawning grounds on which they had been tagged, even though many of them ranged long distances between spawning seasons.

  3. [Human interaction, social cognition, and the superior temporal sulcus].

    Science.gov (United States)

    Brunelle, Francis; Saitovitch, Anna; Boddaert, Nathalie; Grevent, David; Cambier, Jean; Lelord, Gilbert; Samson, Yves; Zilbovicius, Monica

    2013-01-01

    Human beings are social animals. This ability to live together is ensured by cognitive functions, the neuroanatomical bases of which are starting to be unraveled by MRI-based studies. The regions and network engaged in this process are known as the "social brain ". The core of this network is the superior temporal sulcus (STS), which integrates sensory and emotional inputs. Modeling studies of healthy volunteers have shown the role of the STS.in recognizing others as biological beings, as well as facial and eye-gaze recognition, intentionality and emotions. This cognitive capacity has been described as the "theory of mind ". Pathological models such as autism, in which the main clinical abnormality is altered social abilities and communication, have confirmed the role of the STS in the social brain. Conceptualisation of this empathic capacity has been described as "meta cognition ", which forms the basis of human social organizationand culture.

  4. Superior Mesenteric Vein Thrombosis Associated with Hormonal Contraceptive Use

    Directory of Open Access Journals (Sweden)

    Nobuatsu Koyama

    2016-06-01

    Full Text Available A 44-year-old woman was admitted with a 7-day history of lower abdominal pain and nausea. Physical examination demonstrated tenderness in the lower abdomen without signs of peritonitis. There were no specific findings in the laboratory evaluation. She had a history of dysmenorrhea for 15 years and was taking a combined hormonal contraceptive containing 0.02 mg ethinyl estradiol and 3 mg drospirenone for 19 months. Contrast-enhanced computed tomography showed superior mesenteric vein thrombosis (SMVT. Systemic anticoagulant infusion was immediately administered and the symptoms disappeared within 2 days. The thrombus disappeared after 3 months. This case report suggests that early diagnosis of SMVT and immediate systemic anticoagulant therapy may reduce the rate of intestinal infarction.

  5. Aprendizagem significativa: relato de experiência no ensino superior

    Directory of Open Access Journals (Sweden)

    Caren E. Studer

    1999-12-01

    Full Text Available O presente artigo tem como finalidade, o relato e a análise da prática de elaboração de relatórios semanais, a partir de textos pertinentes ao conteúdo de uma disciplina em cursos de nível superior em uma faculdade particular no interior do Estado de S. Paulo.Tendo como referencial teórico a Teoria Crítica da Educação, procura analisar a abrangência dessa experiência situada em um ambiente preponderantemente tradicional de ensino, utilizando-se como ferramentas de análise as categorias de aprendizagem significativa de Masetto (1998 e alienação desenvolvida por Castanho (1989.

  6. Ensino superior, para quê? Higher education, what for?

    Directory of Open Access Journals (Sweden)

    Henry Giroux

    2010-05-01

    Full Text Available O texto propõe retomar a universidade democrática como referência ética, em face dos desafios do mundo globalizado. Discute a situação atual das universidades, caracterizada como uma crise mundial no Ensino Superior, tendo como referência as IES dos Estados Unidos da América e do Canadá. São destacados três aspectos nessa questão-problema: 1- as consequências do movimento de globalização, que atinge todas as esferas da vida humana, entre elas a educação, e demandam do Ensino Superior o exercício da função de educar as gerações futuras para enfrentar os desafios de uma democracia global, evitando adotar a prática da indução dos professores e alunos à instrumentalização e ao imediatismo, subvalorizando o conhecimento crítico. 2- a retomada pelas universidades de seus objetivos de conhecimento e autonomia, posicionando-se contra a instrumentalização, a mercantilização e a militarização, essa última, como monitoramento de diferentes sujeitos sociais, e do Estado, exercidos sobre as IES. Para isso, propõe a colaboração inclusiva como uma das principais formas de divulgação da universidade e da importância da liberdade e da autonomia da Instituição Superior em suas decisões e ações. 3- a universidade acessível a todos que, além de possibilitar o desenvolvimento de uma educação crítica e de uma cultura intelectual verdadeira, adota metodologias prazerosas, estimulantes e capacitadoras, e valoriza os professores extinguindo os "contratos alternativos de trabalho" que têm contribuído para o empobrecimento da qualidade do Ensino Superior.The text proposes to reinstitute the democratic university as an ethic reference, given the challenges of the globalized world. It discusses the universities' current situation, which is characterized as a global crisis in higher education, taking as reference American and Canadian higher education institutions. Three aspects of such characterization are highlighted: 1

  7. New and superior adrenal scanning agent, NP-59

    International Nuclear Information System (INIS)

    Sarkar, S.D.; Beierwaltes, W.H.; Ice, R.D.; Basmadjian, G.P.; Hertzel, K.R.; Kennedy, W.P.; Mason, M.M.

    1975-01-01

    The first synthesis of 131 I-19-iodocholesterol had a 10 to 25 percent radiochemical impurity that was not iodide ion. This impurity has been identified as 6β- 131 I-iodomethyl-19-nor cholest-5(10)-en-3β-ol (NP-59) and has been synthesized. Tissue distribution studies with 131 I-NP-59 in rats and dogs revealed a higher adrenal uptake and adrenal-to-tissue ratios compared to 131 I 19-iodocholesterol, probably less in vivo deiodination, and superior adrenal images. A high uptake was seen in the adrenal medulla in addition to that in the cortex. Iodine-131-NP-59 is being evaluated for the early detection of adrenal--cortical disorders and as a potential scanning agent for detecting structural abnormalities of the adrenal medulla

  8. Prostate-specific antigen superior serum marker for prostatic carcinoma

    Energy Technology Data Exchange (ETDEWEB)

    Heaney, J A; Allen, M A; Keane, T; Duffy, J J

    1987-05-01

    A new immunoradiometric assay based on dual monoclonal antibody reaction system (Hybritech-TANDEM/sup R/) was used to measure serum levels of prostate-specific antigen (PSA) and prostatic acid phosphatase (PAP) in 39 patients with prostatic carcinoma (CaP), in 57 with benign prostatic hyperplasia (BPH) and in 14 without prostatic disease. Serum PSA was elevated in 82% of patients with CaP while PAP was elevated in only 54%. In this and other studies, PSA is superior to conventional serum markers in sensitivity, prediction of CaP stage and in longitudinal monitoring of disease. A 16% false positive rate precludes PSA as a screening test. The assay used was found to be simple and reliable.

  9. Prostate-specific antigen superior serum marker for prostatic carcinoma

    International Nuclear Information System (INIS)

    Heaney, J.A.; Allen, M.A.; Keane, T.; Duffy, J.J.

    1987-01-01

    A new immunoradiometric assay based on dual monoclonal antibody reaction system (Hybritech-TANDEM R ) was used to measure serum levels of prostate-specific antigen (PSA) and prostatic acid phosphatase (PAP) in 39 patients with prostatic carcinoma (CaP), in 57 with benign prostatic hyperplasia (BPH) and in 14 without prostatic disease. Serum PSA was elevated in 82% of patients with CaP while PAP was elevated in only 54%. In this and other studies, PSA is superior to conventional serum markers in sensitivity, prediction of CaP stage and in longitudinal monitoring of disease. A 16% false positive rate precludes PSA as a screening test. The assay used was found to be simple and reliable. (author)

  10. Superior radiation tolerance of thin epitaxial silicon detectors

    CERN Document Server

    Kramberger, G; Fretwurst, E; Honniger, F; Lindström, G; Pintilie, I; Röder, R; Schramm, A; Stahl, J

    2003-01-01

    For the LHC upgrade (fluences up to 10**1**6 p/cm**2) epi-Si devices are shown to be a viable solution. No type inversion was measured up to 1.3 multiplied by 10**1**524 GeV/c protons/cm**2 and the charge collection efficiency (CCE) remained close to 100%. For reactor neutrons CCE was measured to be 60% at 8 multiplied by 10**1**5 n/cm **2. Annealing measurements have shown that only moderate cooling during beam off periods would be necessary. As a tentative explanation for the superior quality of these devices, we assume that radiation-induced donor generation leads to compensation effects of deep acceptors. In the future, we will extend the experiments to fluences up to 10**1**6 p/cm**2 and use also different variants of the epi-Si material and device geometry.

  11. Superior thermal conductivity in suspended bilayer hexagonal boron nitride

    Science.gov (United States)

    Wang, Chengru; Guo, Jie; Dong, Lan; Aiyiti, Adili; Xu, Xiangfan; Li, Baowen

    2016-01-01

    We reported the basal-plane thermal conductivity in exfoliated bilayer hexagonal boron nitride h-BN that was measured using suspended prepatterned microstructures. The h-BN sample suitable for thermal measurements was fabricated by dry-transfer method, whose sample quality, due to less polymer residues on surfaces, is believed to be superior to that of PMMA-mediated samples. The measured room temperature thermal conductivity is around 484 Wm−1K−1(+141 Wm−1K−1/ −24 Wm−1K−1) which exceeds that in bulk h-BN, providing experimental observation of the thickness-dependent thermal conductivity in suspended few-layer h-BN. PMID:27142571

  12. El abandono en las etapas iniciales de los estudios superiores

    Directory of Open Access Journals (Sweden)

    Norma Zandomeni

    2016-01-01

    Full Text Available En este artículo se presenta una investigación sobre abandono de los estudios superiores realizada en una universidad argentina. Con un abordaje metodológico cuanti-cualitativo, se analizan datos secundarios y se recupera la perspectiva de distintos actores mediante talleres, encuestas y entrevistas. Se aborda el abandono que se produce en el proceso del ingreso y el generado en los dos primeros años, tanto en su cuantificación como en los factores que operan en el mismo. En el primer caso el abandono se asocia principalmente a factores exógenos a la institución mientras que en el segundo toman fuerza factores internos a la universidad.

  13. Superior Sagittal Sinus Thrombosis Complicating Typhoid Fever in a Teenager

    Directory of Open Access Journals (Sweden)

    P. O. Okunola

    2012-01-01

    Full Text Available Cerebral venous sinus (sinovenous thrombosis (CSVT is a rare life-threatening disorder in childhood that is often misdiagnosed. CSVT encompasses cavernous sinus thrombosis, lateral sinus thrombosis, and superior sagittal sinus thrombosis (SSST. We present an adolescent girl who was well until two weeks earlier when she had a throbbing frontal headache and fever with chills; she later had dyspnoea, jaundice, melena stool, multiple seizures, nuchal rigidity, and monoparesis of the right lower limb a day before admission. Urine test for Salmonella typhi Vi antigen was positive, and Widal reaction was significant. Serial cranial computerized tomography scans revealed an expanding hypodense lesion in the parafalcine region consistent with SSST or a parasagittal abscess. Inadvertent left parietal limited craniectomy confirmed SSST. She recovered completely with subsequent conservative management. Beyond neuropsychiatric complications of Typhoid fever, CSVT should be highly considered when focal neurologic deficits are present.

  14. Motor mechanisms of vertical fusion in individuals with superior oblique paresis.

    Science.gov (United States)

    Mudgil, Ananth V; Walker, Mark; Steffen, Heimo; Guyton, David L; Zee, David S

    2002-06-01

    We wanted to determine the mechanisms of motor vertical fusion in patients with superior oblique paresis and to correlate these mechanisms with surgical outcomes. Ten patients with superior oblique paresis underwent 3-axis, bilateral, scleral search coil eye movement recordings. Eye movements associated with fusion were analyzed. Six patients had decompensated congenital superior oblique paresis and 4 had acquired superior oblique paresis. All patients with acquired superior oblique paresis relied predominantly on the vertical rectus muscles for motor fusion. Patients with congenital superior oblique paresis were less uniform in their mechanisms for motor fusion: 2 patients used predominantly the oblique muscles, 2 patients used predominantly the vertical recti, and 2 patients used predominantly the superior oblique in the hyperdeviated eye and the superior rectus in the hypodeviated eye. The last 2 patients developed the largest changes in torsional eye alignment relative to changes in vertical eye alignment and were the only patients to develop symptomatic surgical overcorrections. There are 3 different mechanisms for vertical fusion in individuals with superior oblique paresis, with the predominant mechanism being the vertical recti. A subset of patients with superior oblique paresis uses predominantly the superior oblique muscle in the hyperdeviated paretic eye and the superior rectus muscle in the fellow eye for fusion. This results in intorsion of both eyes, causing a large change in torsional alignment. The consequent cyclodisparity, in addition to the existing vertical deviation, may make fusion difficult. The differing patterns of vertical fusional vergence may have implications for surgical treatment.

  15. 5 CFR 531.212 - Superior qualifications and special needs pay-setting authority.

    Science.gov (United States)

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Superior qualifications and special needs... Appointment Or Position Changes § 531.212 Superior qualifications and special needs pay-setting authority. (a) Agency authority. (1) An agency may use the superior qualifications and special needs pay-setting...

  16. File list: His.Neu.05.AllAg.Superior_Cervical_Ganglion [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  15. Laparoscopic management of superior mesentric artery syndrome: A case report and review of literature

    Directory of Open Access Journals (Sweden)

    Makam Ramesh

    2008-01-01

    Full Text Available Superior mesentric artery syndrome is a rare cause of high small bowel obstruction, caused by compression of the transverse part of the duodenum in between the superior mesentric artery and aorta. Patients present with chronic abdominal pain, vomiting and weight loss. We report a case of superior mesenteric artery syndrome, managed laparoscopically with laparoscopic duodenojejunostomy.

  16. Spatial and temporal distribution of singlet oxygen in Lake Superior.

    Science.gov (United States)

    Peterson, Britt M; McNally, Ann M; Cory, Rose M; Thoemke, John D; Cotner, James B; McNeill, Kristopher

    2012-07-03

    A multiyear field study was undertaken on Lake Superior to investigate singlet oxygen ((1)O(2)) photoproduction. Specifically, trends within the lake were examined, along with an assessment of whether correlations existed between chromophoric dissolved organic matter (CDOM) characteristics and (1)O(2) production rates and quantum yields. Quantum yield values were determined and used to estimate noontime surface (1)O(2) steady-state concentrations ([(1)O(2)](ss)). Samples were subdivided into three categories based on their absorbance properties (a300): riverine, river-impacted, or open lake sites. Using calculated surface [(1)O(2)](ss), photochemical half-lives under continuous summer sunlight were calculated for cimetidine, a pharmaceutical whose reaction with (1)O(2) has been established, to be on the order of hours, days, and a week for the riverine, river-impacted, and open lake waters, respectively. Of the CDOM properties investigated, it was found that dissolved organic carbon (DOC) and a300 were the best parameters for predicting production rates of [(1)O(2)](ss). For example, given the correlations found, one could predict [(1)O(2)](ss) within a factor of 4 using a300 alone. Changes in the quantum efficiency of (1)O(2) production upon dilution of river water samples with lake water samples demonstrated that the CDOM found in the open lake is not simply diluted riverine organic matter. The open lake pool was characterized by low absorption coefficient, low fluorescence, and low DOC, but more highly efficient (1)O(2) production and predominates the Lake Superior system spatially. This study establishes that parameters that reflect the quantity of CDOM (e.g., a300 and DOC) correlate with (1)O(2) production rates, while parameters that characterize the absorbance spectrum (e.g., spectral slope coefficient and E2:E3) correlate with (1)O(2) production quantum yields.

  17. ESTUDIO DEL BULLYING EN EL CICLO SUPERIOR DE PRIMARIA

    Directory of Open Access Journals (Sweden)

    Rosario Ruiz Arroyo

    2015-01-01

    Full Text Available Nuestra investigación trata el fenómeno del bullying en el ciclo superior de primaria. Para llevarla a cabo, hemos elaborado un cuestionario ad hoc a partir de una revisión bibliográfica de diferentes investigaciones en las que se han utilizado varios instrumentos, pruebas, cuestionarios... Este instrumento nos ha servido para analizar diferentes temas: la percepción que tienen los niños de ciclo superior sobre el bullying, en qué escenarios del centro escolar se producen más estos comportamientos, los diferentes tipos de bullying (físico, verbal y exclusión social y cuáles se producen más a menudo y analizar las respuestas que nos dan los alumnos en función del género y del curso (5.º y 6.º. Los resultados que hemos obtenido muestran, entre otras cosas: que en los niños se da más el bullying físico, mientras que en las niñas predomina el de tipo verbal y exclusión social; que la única diferencia según el curso es que en 6.º curso se da más exclusión social que en 5.º curso; y que donde se producen más conductas de bullying es en el patio, seguido del aula cuando no se encuentra el docente. Finalmente, partiendo de los resultados obtenidos, hemos elaborado unas propuestas de actuación psicopedagógicas para mejorar la convivencia en la escuela y otros espacios educativos.

  18. Frontal and superior temporal auditory processing abnormalities in schizophrenia.

    Science.gov (United States)

    Chen, Yu-Han; Edgar, J Christopher; Huang, Mingxiong; Hunter, Michael A; Epstein, Emerson; Howell, Breannan; Lu, Brett Y; Bustillo, Juan; Miller, Gregory A; Cañive, José M

    2013-01-01

    Although magnetoencephalography (MEG) studies show superior temporal gyrus (STG) auditory processing abnormalities in schizophrenia at 50 and 100 ms, EEG and corticography studies suggest involvement of additional brain areas (e.g., frontal areas) during this interval. Study goals were to identify 30 to 130 ms auditory encoding processes in schizophrenia (SZ) and healthy controls (HC) and group differences throughout the cortex. The standard paired-click task was administered to 19 SZ and 21 HC subjects during MEG recording. Vector-based Spatial-temporal Analysis using L1-minimum-norm (VESTAL) provided 4D maps of activity from 30 to 130 ms. Within-group t-tests compared post-stimulus 50 ms and 100 ms activity to baseline. Between-group t-tests examined 50 and 100 ms group differences. Bilateral 50 and 100 ms STG activity was observed in both groups. HC had stronger bilateral 50 and 100 ms STG activity than SZ. In addition to the STG group difference, non-STG activity was also observed in both groups. For example, whereas HC had stronger left and right inferior frontal gyrus activity than SZ, SZ had stronger right superior frontal gyrus and left supramarginal gyrus activity than HC. Less STG activity was observed in SZ than HC, indicating encoding problems in SZ. Yet auditory encoding abnormalities are not specific to STG, as group differences were observed in frontal and SMG areas. Thus, present findings indicate that individuals with SZ show abnormalities in multiple nodes of a concurrently activated auditory network.

  19. Subregions of the human superior frontal gyrus and their connections.

    Science.gov (United States)

    Li, Wei; Qin, Wen; Liu, Huaigui; Fan, Lingzhong; Wang, Jiaojian; Jiang, Tianzi; Yu, Chunshui

    2013-09-01

    The superior frontal gyrus (SFG) is located at the superior part of the prefrontal cortex and is involved in a variety of functions, suggesting the existence of functional subregions. However, parcellation schemes of the human SFG and the connection patterns of each subregion remain unclear. We firstly parcellated the human SFG into the anteromedial (SFGam), dorsolateral (SFGdl), and posterior (SFGp) subregions based on diffusion tensor tractography. The SFGam was anatomically connected with the anterior and mid-cingulate cortices, which are critical nodes of the cognitive control network and the default mode network (DMN). The SFGdl was connected with the middle and inferior frontal gyri, which are involved in the cognitive execution network. The SFGp was connected with the precentral gyrus, caudate, thalamus, and frontal operculum, which are nodes of the motor control network. Resting-state functional connectivity analysis further revealed that the SFGam was mainly correlated with the cognitive control network and the DMN; the SFGdl was correlated with the cognitive execution network and the DMN; and the SFGp was correlated with the sensorimotor-related brain regions. The SFGam and SFGdl were further parcellated into three and two subclusters that are well corresponding to Brodmann areas. These findings suggest that the human SFG consists of multiple dissociable subregions that have distinct connection patterns and that these subregions are involved in different functional networks and serve different functions. These results may improve our understanding on the functional complexity of the SFG and provide us an approach to investigate the SFG at the subregional level. Copyright © 2013 Elsevier Inc. All rights reserved.

  20. Agenesia de cava superior associada a bloqueio atrioventricular de 3º grau Agenesis of the right superior vena cava associated with total heart block

    Directory of Open Access Journals (Sweden)

    Gustavo J. Ventura Couto

    2008-03-01

    Full Text Available A persistência de veia cava superior esquerda com ausência da veia cava superior é uma anomalia rara, principalmente quando associada a bloqueio atrioventricular de 3º grau. Relatamos o caso de uma paciente, na qual durante implante de marca-passo definitivo, para a correção de bloqueio atrioventricular total, foi detectada presença de veia cava superior esquerda com suspeição de ausência de veia cava superior, o que levou ao emprego de técnica diferenciada para fixação do eletrodo ventricular. Para confirmação da provável agenesia, foram realizados diversos exames complementares de imagem, demonstrando-se a dificuldade no diagnóstico da síndrome aqui descrita.The superior left vena cava with the absent superior vena cava is a rare abnormality, especially when associated with total heart block. We report a case of a patient in which the presence of superior left vena cava and the absence of the superior vena cava was detected during the implantation of a pacemaker for the correction of a total heart block, which led us to use a different technique for the fixation of the ventricular electrode. To confirm the supposed absence, several image exams were made showing the difficulty on the diagnosis of the described syndrome.

  1. Sustained attention is associated with right superior longitudinal fasciculus and superior parietal white matter microstructure in children

    DEFF Research Database (Denmark)

    Klarborg, Brith; Skak Madsen, Kathrine; Vestergaard, Martin

    2013-01-01

    Sustained attention develops during childhood and has been linked to the right fronto-parietal cortices in functional imaging studies; however, less is known about its relation to white matter (WM) characteristics. Here we investigated whether the microstructure of the WM underlying and connecting...... the right fronto-parietal cortices was associated with sustained attention performance in a group of 76 typically developing children aged 7-13 years. Sustained attention was assessed using a rapid visual information processing paradigm. The two behavioral measures of interest were the sensitivity index d......' and the coefficient of variation in reaction times (RT(CV) ). Diffusion-weighted imaging was performed. Mean fractional anisotropy (FA) was extracted from the WM underlying right dorsolateral prefrontal (DLPFC) and parietal cortex (PC), and the right superior longitudinal fasciculus (SLF), as well as equivalent...

  2. Estudo clínico e histológico das pálpebras e conjuntiva hígidas submetidas ao tratamento tópico com soluções anestésicas em coelhos Clinical and histological evaluation of healthy eyelid and conjunctiva subject to local treatment with anesthetic solutions in rabbits

    Directory of Open Access Journals (Sweden)

    A.V.C. Amaral

    2013-02-01

    were subject to euthanasia, for the purpose of conjunctiva, eyelids and third eyelids histological evaluation. At the clinical exam, different grades of episcleritis were found in all rabbits in G2 group and only in 17.8% of the rabbits in G1 group. Eye and eyelid histologic evaluation of G2 group revealed an upgrade of goblet cells and eosinophil number, lymphoid follicle proliferation and increase of interstitial space in the eyelids. We could conclude that 1% tetracaine associated with 0.1% phenylephrine eye drop caused more eyelid and ocular conjunctiva toxicity than 0.5% proparacaine eye drop.

  3. The superior vena cava syndrome caused by malignant disease

    International Nuclear Information System (INIS)

    Eren, Suat; Karaman, Adem; Okur, Adnan

    2006-01-01

    Objective: The superior vena cava (SVC) obstruction by malignant diseases is either by direct invasion and compression or by tumour thrombus of the SVC. Whatever is its cause, obstruction of the SVC causes elevated pressure in the veins draining into the SVC and increased or reversed blood flow through collateral vessels. Severity of the syndrome depends on the collateral vascular system development. Therefore, imaging of the collateral veins with variable location and connection is important in determining the extension and management of the disease. Our aims are to describe collateral vessels of the superior vena cava syndrome (SVCS) related with the malignant diseases and to assess the ability of multi-detector row CT with multiplanar and 3D volume rendering techniques in determining and describing collateral circulations. Materials and methods: We present CT angiography findings of seven patients with small cell carcinoma of the lung (n = 2), squamous cell carcinoma of the lung (n = 3), Hodgkin disease of the thorax (n = 1), and squamous cell carcinoma of the oesophagus (n = 1). The patients received contrast-enhanced CT scans of the chest and abdomen on a multi-detector row CT during breath holding at suspended inspiration. Results: CT images revealed the cause and level of the SVC obstruction in all patients with axial and multiplanar reconstructed images. The SVC showed total obstruction in five patients and partial obstruction in two patients. The most common experienced collateral vessels were azygos vein (6), intercostal veins (6), mediastinal veins (6), paravertebral veins (5), hemiazygos vein (5), thoracoepigastric vein (5), internal mammary vein (5), thoracoacromioclavicular venous plexus (5), and anterior chest wall veins (5). While one case showed the portal-systemic shunt, V. cordis media and sinus coronarius with phrenic veins were enlarged in two cases, and the left adrenal vein was enlarged in a patient. In one case, the azygos vein with reversed

  4. Is cold or warm blood cardioplegia superior for myocardial protection?

    Science.gov (United States)

    Abah, Udo; Roberts, Patrick Garfjeld; Ishaq, Muhammad; De Silva, Ravi

    2012-01-01

    A best evidence topic in cardiac surgery was written according to a structured protocol. The question addressed was whether the use of warm or cold blood cardioplegia has superior myocardial protection. More than 192 papers were found using the reported search, of which 20 represented the best evidence to answer the clinical question. The authors, journal, date, country of publication, patient group studied, study type, relevant outcomes and results of these papers are tabulated. A good breadth of high-level evidence addressing this clinical dilemma is available, including a recent meta-analysis and multiple large randomized clinical trials. Yet despite this level of evidence, no clear significant clinical benefit has been demonstrated by warm or cold blood cardioplegia. This suggests that neither method is significantly superior and that both provide similar efficacy of myocardial protection. The meta-analysis, including 41 randomized control trials (5879 patients in total), concluded that although a lower cardiac enzyme release and improved postoperative cardiac index was demonstrated in the warm cardioplegia group, this benefit was not reflected in clinical outcomes, which were similar in both groups. This theme of benefit in biochemical markers, physiological metrics and non-fatal postoperative events in the warm cardioplegia group ran throughout the literature, in particular the ‘Warm Heart investigators’ who conducted a randomized trial of 1732 patients, demonstrated a reduction in postoperative low output syndrome (6.1 versus 9.3%, P = 0.01) in the warm cardioplegia group, but no significant drop in 30-day all-cause mortality (1.4 versus 2.5%, P = 0.12). However, their later follow-up indicates non-fatal postoperative events predict reduced late survival, independent of cardioplegia. A minority of studies suggested a benefit of cold cardioplegia over warm in particular patient subgroups: One group conducted a retrospective study of 520 patients who

  5. Concepto de excelencia en enseñanza superior universitaria

    Directory of Open Access Journals (Sweden)

    Eduardo García-Jiménez

    2016-07-01

    Full Text Available La idea de excelencia es consustancial a la enseñanza superior universitaria. A pesar de la diversidad bajo la que se manifiesta, la excelencia está presente en las agendas de las universidades. Los propios cuestionamientos de la capacidad de las universidades para responder al reto de proporcionar una formación avanzada a millones de estudiantes en todo el mundo o para aportar valor añadido a la sociedad y la exigencia de que desarrollen sistemas internos de garantía de la calidad y se sometan a evaluaciones externas, no son sino evidencias de la que la excelencia debería formar parte del ADN de la enseñanza superior universitaria. El concepto de excelencia en la enseñanza es un constructo multidimensional que puede definirse en términos de proceso, producto y meta. En términos de proceso, la excelencia puede definirse a partir de elementos instruccionales vinculados a los métodos de enseñanza, a la evaluación y retroalimentación, a los recursos que hacen excelentes las experiencias de aprendizaje de los estudiantes o la integración de la enseñanza y la investigación. Pero, en la definición del concepto excelencia también intervienen otros elementos menos tangibles como el compromiso académico de estudiantes y profesores o el compromiso de los programas y cursos con la libertad académica y la igualdad. En términos de producto, la excelencia se define a través de indicadores de rendimiento, de satisfacción de los grupos de interés o de responsabilidad social. Pero, en todos los casos, la excelencia es la meta a partir de la que las instituciones universitarias realizan sus planes de futuro y su propia definición de enseñanza.

  6. The superior vena cava syndrome caused by malignant disease

    Energy Technology Data Exchange (ETDEWEB)

    Eren, Suat [Department of Radiology, Faculty of Medicine, Atatuerk University, 25240 Erzurum (Turkey)]. E-mail: suateren@atauni.edu.tr; Karaman, Adem [Department of Radiology, Faculty of Medicine, Atatuerk University, 25240 Erzurum (Turkey); Okur, Adnan [Department of Radiology, Faculty of Medicine, Atatuerk University, 25240 Erzurum (Turkey)

    2006-07-15

    Objective: The superior vena cava (SVC) obstruction by malignant diseases is either by direct invasion and compression or by tumour thrombus of the SVC. Whatever is its cause, obstruction of the SVC causes elevated pressure in the veins draining into the SVC and increased or reversed blood flow through collateral vessels. Severity of the syndrome depends on the collateral vascular system development. Therefore, imaging of the collateral veins with variable location and connection is important in determining the extension and management of the disease. Our aims are to describe collateral vessels of the superior vena cava syndrome (SVCS) related with the malignant diseases and to assess the ability of multi-detector row CT with multiplanar and 3D volume rendering techniques in determining and describing collateral circulations. Materials and methods: We present CT angiography findings of seven patients with small cell carcinoma of the lung (n = 2), squamous cell carcinoma of the lung (n = 3), Hodgkin disease of the thorax (n = 1), and squamous cell carcinoma of the oesophagus (n = 1). The patients received contrast-enhanced CT scans of the chest and abdomen on a multi-detector row CT during breath holding at suspended inspiration. Results: CT images revealed the cause and level of the SVC obstruction in all patients with axial and multiplanar reconstructed images. The SVC showed total obstruction in five patients and partial obstruction in two patients. The most common experienced collateral vessels were azygos vein (6), intercostal veins (6), mediastinal veins (6), paravertebral veins (5), hemiazygos vein (5), thoracoepigastric vein (5), internal mammary vein (5), thoracoacromioclavicular venous plexus (5), and anterior chest wall veins (5). While one case showed the portal-systemic shunt, V. cordis media and sinus coronarius with phrenic veins were enlarged in two cases, and the left adrenal vein was enlarged in a patient. In one case, the azygos vein with reversed

  7. The properties of retrieval cues constrain the picture superiority effect.

    Science.gov (United States)

    Weldon, M S; Roediger, H L; Challis, B H

    1989-01-01

    In three experiments, we examined why pictures are remembered better than words on explicit memory tests like recall and recognition, whereas words produce more priming than pictures on some implicit tests, such as word-fragment and word-stem completion (e.g., completing -l-ph-nt or ele----- as elephant). One possibility is that pictures are always more accessible than words if subjects are given explicit retrieval instructions. An alternative possibility is that the properties of the retrieval cues themselves constrain the retrieval processes engaged; word fragments might induce data-driven (perceptually based) retrieval, which favors words regardless of the retrieval instructions. Experiment 1 demonstrated that words were remembered better than pictures on both the word-fragment and word-stem completion tasks under both implicit and explicit retrieval conditions. In Experiment 2, pictures were recalled better than words with semantically related extralist cues. In Experiment 3, when semantic cues were combined with word fragments, pictures and words were recalled equally well under explicit retrieval conditions, but words were superior to pictures under implicit instructions. Thus, the inherently data-limited properties of fragmented words limit their use in accessing conceptual codes. Overall, the results indicate that retrieval operations are largely determined by properties of the retrieval cues under both implicit and explicit retrieval conditions.

  8. Pictorial Superiority Effects in Oldest-Old People

    Science.gov (United States)

    Cherry, Katie E.; Hawley, Karri S.; Jackson, Erin M.; Volaufova, Julia; Su, L. Joseph; Jazwinski, S. Michal

    2008-01-01

    In this article, we examined memory for pictures and words in middle-age (45-59 years), young-old (60-74 years), old-old (75-89 years) and the oldest-old adults (90-97 years) in the Louisiana Healthy Aging Study. Stimulus items were presented and retention was tested in a blocked order where half of the participants studied 16 simple line drawings and the other half studied matching words during acquisition. Free recall and recognition followed. In the next acquisition/test block, a new set of items was used where the stimulus format was changed relative to the first block. Results yielded pictorial superiority effects in both retention measures for all age groups. Follow-up analyses of clustering in free recall revealed a greater number of categories were accessed (which reflects participants' retrieval plan) and more items were recalled per category (which reflects participants' encoding strategy) when pictures served as stimuli compared to words. Cognitive status and working memory span were correlated with picture and word recall. Regression analyses confirmed that these individual difference variables accounted for significant age-related variance in recall. These data strongly suggest that the oldest-old can utilize nonverbal memory codes to support long-term retention as effectively as do younger adults. PMID:18651263

  9. Computed tomographic findings in acute superior mesenteric arterial occlusion

    International Nuclear Information System (INIS)

    Kuwabara, Yoshiyuki; Kataoka, Makoto; Kureyama, Yasuyuki; Iwata, Hiroshi; Kashima, Taketoshi; Sinoda, Noriyuki; Sato, Atsushi; Hattori, Kohji; Masaoka, Akira

    1993-01-01

    In this study computed tomography (CT) findings were examined in 6 cases of acute superior mesenteric arterial (SMA) occlusion. With simple CT, occluded site of SMA revealed a slightly high density in 2 cases, while no findings were noted in other cases. Slightly dilated multiple loops of the intestine were confirmed in 3 cases, but no particular changes in the intestinal wall were found. As other findings, ascites and air in the portal vein were found in each one case. Contrast enhanced CT was conducted in 2 out of the 6 cases, and occluded site was visualized as spots in one case but no findings were noted in the other. The contrast enhancement effect in vessels in SMA region was examined from its root to the peripheral in this order, and the 2 cases showed common findings that the contrast enhancement effect abruptly disappeared at a point in vessels in SMA region (discontinuance). The point was consistent with the occluded site on angiography. These findings indicate that simple CT alone is difficult to offer correct diagnosis of SMA occlusion, but contrast enhanced CT is able to visualize the SMA occlusion as a discontinuance picture. It is thought that contrast enhanced CT can be a useful procedure for early diagnosis of SMA occlusion. (author)

  10. Extensions of the picture superiority effect in associative recognition.

    Science.gov (United States)

    Hockley, William E; Bancroft, Tyler

    2011-12-01

    Previous research has shown that the picture superiority effect (PSE) is seen in tests of associative recognition for random pairs of line drawings compared to pairs of concrete words (Hockley, 2008). In the present study we demonstrated that the PSE for associative recognition is still observed when subjects have correctly identified the individual items of each pair as old (Experiment 1), and that this effect is not due to rehearsal borrowing (Experiment 2). The PSE for associative recognition also is shown to be present but attenuated for mixed picture-word pairs (Experiment 3), and similar in magnitude for pairs of simple black and white line drawings and coloured photographs of detailed objects (Experiment 4). The results are consistent with the view that the semantic meaning of nameable pictures is activated faster than that of words thereby affording subjects more time to generate and elaborate meaningful associations between items depicted in picture form. PsycINFO Database Record (c) 2011 APA, all rights reserved.

  11. Electrical Microstimulation of the Superior Colliculus in Strabismic Monkeys.

    Science.gov (United States)

    Fleuriet, Jérome; Walton, Mark M G; Ono, Seiji; Mustari, Michael J

    2016-06-01

    Visually guided saccades are disconjugate in human and nonhuman strabismic primates. The superior colliculus (SC) is a region of the brain topographically organized in visual and motor maps where the saccade goal is spatially coded. The present study was designed to investigate if a site of stimulation on the topographic motor map was evoking similar or different saccade vectors for each eye. We used microelectrical stimulation (MS) of the SC in two strabismic (one esotrope and one exotrope) and two control macaques under binocular and monocular viewing conditions. We compared the saccade amplitudes and directions for each SC site and each condition independently of the fixating eye and then between each fixating eye. A comparison with disconjugacies of visually guided saccades was also performed. We observed different saccade vectors for the two eyes in strabismic monkeys, but conjugate saccades in normal monkeys. Evoked saccade vectors for the left eye when that eye was fixating the target were different from those of the right eye when it was fixating. The disconjugacies evoked by the MS were not identical but similar to those observed for visually guided saccades especially for the dominant eye. Our results suggest that, in strabismus, the saccade generator does not interpret activation of a single location of the SC as the same desired displacement for each eye. This finding is important for advancing understanding of the development of neural circuits in strabismus. French Abstract.

  12. Superior shoulder suspensory complex fracture dislocation case report

    International Nuclear Information System (INIS)

    Lidgett, T.; Bate, E.; Pittock, L.

    2017-01-01

    Background: Acromioclavicular joint dislocation can be more complex than it first appears. The presented case had an unusual combination of injuries to the superior shoulder suspensory complex, which yielded some interesting learning points. Case summary: The injuries were sustained after a fall from a push bike and included acromioclavicular dislocation with coracoid process, clavicle and acromion process fractures. These were identified on the initial X-ray examination, which was followed by computed tomography for surgical planning. The injuries were successfully treated by internal fixation. Conclusion: The unexpected complexity of the injuries could have led to subtle but important findings being overlooked. This case highlights the importance of a thorough search strategy, consideration of injury biomechanics and knowledge of associated injuries. - Highlights: • Search for associated fractures in acromioclavicular joint dislocation. • Assess the clavicle, acromion process and coracoid process in particular. • Do not end the shoulder X-ray examination after seeing one injury. • Both axial and cranially angulated anteroposterior projections are beneficial. • Acromioclavicular joint fracture dislocation treatment may require further research.

  13. Critical success factors for achieving superior m-health success.

    Science.gov (United States)

    Dwivedi, A; Wickramasinghe, N; Bali, R K; Naguib, R N G

    2007-01-01

    Recent healthcare trends clearly show significant investment by healthcare institutions into various types of wired and wireless technologies to facilitate and support superior healthcare delivery. This trend has been spurred by the shift in the concept and growing importance of the role of health information and the influence of fields such as bio-informatics, biomedical and genetic engineering. The demand is currently for integrated healthcare information systems; however for such initiatives to be successful it is necessary to adopt a macro model and appropriate methodology with respect to wireless initiatives. The key contribution of this paper is the presentation of one such integrative model for mobile health (m-health) known as the Wi-INET Business Model, along with a detailed Adaptive Mapping to Realisation (AMR) methodology. The AMR methodology details how the Wi-INET Business Model can be implemented. Further validation on the concepts detailed in the Wi-INET Business Model and the AMR methodology is offered via a short vignette on a toolkit based on a leading UK-based healthcare information technology solution.

  14. Superior piezoelectric composite films: taking advantage of carbon nanomaterials.

    Science.gov (United States)

    Saber, Nasser; Araby, Sherif; Meng, Qingshi; Hsu, Hung-Yao; Yan, Cheng; Azari, Sara; Lee, Sang-Heon; Xu, Yanan; Ma, Jun; Yu, Sirong

    2014-01-31

    Piezoelectric composites comprising an active phase of ferroelectric ceramic and a polymer matrix have recently found numerous sensory applications. However, it remains a major challenge to further improve their electromechanical response for advanced applications such as precision control and monitoring systems. We here investigated the incorporation of graphene platelets (GnPs) and multi-walled carbon nanotubes (MWNTs), each with various weight fractions, into PZT (lead zirconate titanate)/epoxy composites to produce three-phase nanocomposites. The nanocomposite films show markedly improved piezoelectric coefficients and electromechanical responses (50%) besides an enhancement of ~200% in stiffness. The carbon nanomaterials strengthened the impact of electric field on the PZT particles by appropriately raising the electrical conductivity of the epoxy. GnPs have been proved to be far more promising in improving the poling behavior and dynamic response than MWNTs. The superior dynamic sensitivity of GnP-reinforced composite may be caused by the GnPs' high load transfer efficiency arising from their two-dimensional geometry and good compatibility with the matrix. The reduced acoustic impedance mismatch resulting from the improved thermal conductance may also contribute to the higher sensitivity of GnP-reinforced composite. This research pointed out the potential of employing GnPs to develop highly sensitive piezoelectric composites for sensing applications.

  15. Smaller superior temporal gyrus volume specificity in schizotypal personality disorder

    Science.gov (United States)

    Goldstein, Kim E.; Hazlett, Erin A.; New, Antonia S.; Haznedar, M. Mehmet; Newmark, Randall E.; Zelmanova, Yuliya; Passarelli, Vincent; Weinstein, Shauna R.; Canfield, Emily L.; Meyerson, David A.; Tang, Cheuk Y.; Buchsbaum, Monte S.; Siever, Larry J.

    2009-01-01

    Background Superior temporal gyrus (STG/BA22) volume is reduced in schizophrenia and to a milder degree in schizotypal personality disorder (SPD), representing a less severe disorder in the schizophrenia-spectrum. SPD and Borderline personality disorder (BPD) are severe personality disorders characterized by social and cognitive dysfunction. However, while SPD is characterized by social withdrawal/anhedonia, BPD is marked by hyper-reactivity to interpersonal stimuli and hyper-emotionality. This is the first morphometric study to directly compare SPD and BPD patients in temporal volume. Methods We compared three age-gender- and education-matched groups: 27 unmedicated SPD individuals with no BPD traits, 52 unmedicated BPD individuals with no SPD traits, and 45 healthy controls. We examined gray matter volume of frontal and temporal lobe Brodmann areas (BAs), and dorsal/ventral amygdala from 3T magnetic resonance imaging. Results In the STG, an auditory association area reported to be dysfunctional in SPD and BPD, the SPD patients had significantly smaller volume than healthy controls and BPD patients. No group differences were found between BPD patients and controls. Smaller BA22 volume was associated with greater symptom severity in SPD patients. Reduced STG volume may be an important endophenotype for schizophrenia-spectrum disorders. SPD is distinct from BPD in terms of STG volume abnormalities which may reflect different underlying pathophysiological mechanisms and could help discriminate between them. PMID:19473820

  16. Do Visually Impaired People Develop Superior Smell Ability?

    Science.gov (United States)

    Majchrzak, Dorota; Eberhard, Julia; Kalaus, Barbara; Wagner, Karl-Heinz

    2017-10-01

    It is well known that visually impaired people perform better in orientation by sound than sighted individuals, but it is not clear whether this enhanced awareness also extends to other senses. Therefore, the aim of this study was to observe whether visually impaired subjects develop superior abilities in olfactory perception to compensate for their lack of vision. We investigated the odor perception of visually impaired individuals aged 7 to 89 ( n = 99; 52 women, 47 men) and compared them with subjects of a control group aged 8 to 82 years ( n = 100; 45 women, 55 men) without any visual impairment. The participants were evaluated by Sniffin' Sticks odor identification and discrimination test. Identification ability was assessed for 16 common odors presented in felt-tip pens. In the odor discrimination task, subjects had to determine which of three pens in 16 triplets had a different odor. The median number of correctly identified odorant pens in both groups was the same, 13 of the offered 16. In the discrimination test, there was also no significant difference observed. Gender did not influence results. Age-related changes were observed in both groups with olfactory perception decreasing after the age of 51. We could not confirm that visually impaired people were better in smell identification and discrimination ability than sighted individuals.

  17. Multisensory speech perception without the left superior temporal sulcus.

    Science.gov (United States)

    Baum, Sarah H; Martin, Randi C; Hamilton, A Cris; Beauchamp, Michael S

    2012-09-01

    Converging evidence suggests that the left superior temporal sulcus (STS) is a critical site for multisensory integration of auditory and visual information during speech perception. We report a patient, SJ, who suffered a stroke that damaged the left tempo-parietal area, resulting in mild anomic aphasia. Structural MRI showed complete destruction of the left middle and posterior STS, as well as damage to adjacent areas in the temporal and parietal lobes. Surprisingly, SJ demonstrated preserved multisensory integration measured with two independent tests. First, she perceived the McGurk effect, an illusion that requires integration of auditory and visual speech. Second, her perception of morphed audiovisual speech with ambiguous auditory or visual information was significantly influenced by the opposing modality. To understand the neural basis for this preserved multisensory integration, blood-oxygen level dependent functional magnetic resonance imaging (BOLD fMRI) was used to examine brain responses to audiovisual speech in SJ and 23 healthy age-matched controls. In controls, bilateral STS activity was observed. In SJ, no activity was observed in the damaged left STS but in the right STS, more cortex was active in SJ than in any of the normal controls. Further, the amplitude of the BOLD response in right STS response to McGurk stimuli was significantly greater in SJ than in controls. The simplest explanation of these results is a reorganization of SJ's cortical language networks such that the right STS now subserves multisensory integration of speech. Copyright © 2012 Elsevier Inc. All rights reserved.

  18. Superior flexibility of a wrinkled carbon shell under electrochemical cycling

    KAUST Repository

    Li, Qianqian; Wang, Peng; Feng, Qiong; Mao, Minmin; Liu, Jiabin; Wang, Hongtao; Mao, Scott; Zhang, Xixiang

    2014-01-01

    Nanocarbon composites have been extensively employed in engineering alloy-type anodes in order to improve the poor cyclability caused by the enormous volume changes during lithium (Li+) insertion/extraction. The chemical vapor deposited wrinkled carbon shell (WCS) shows high electrical conductivity, excellent thermal stability and remarkable mechanical robustness, which help in retaining the structural integrity around the tin (Sn) anode core despite ∼250% variation in volume during repetitive lithiation and delithiation. In situ transmission electron microscopy reveals no embrittlement in the lithiated WCS, which fully recovers its original shape after severe mechanical deformation with no obvious structural change. Further analysis indicates that the capacity to accommodate large strains is closely related to the construction of the carbon shell, that is, the stacking of wrinkled few-layer graphenes. Both the pre-existing wrinkles and the few-layer thickness render the carbon shell superior flexibility and good elasticity under bending or expansion of the interior volume. Moreover, the WCS possesses fast lithium ion diffusion channels, which have lower activation barriers (∼0.1 eV) than that on a smooth graphene (∼0.3 eV). The results provide an insight into the improvement in cycle performance that can be achieved through carbon coating of anodes of lithium ion batteries. © 2014 The Royal Society of Chemistry.

  19. Superior piezoelectric composite films: taking advantage of carbon nanomaterials

    International Nuclear Information System (INIS)

    Saber, Nasser; Araby, Sherif; Meng, Qingshi; Hsu, Hung-Yao; Lee, Sang-Heon; Ma, Jun; Yan, Cheng; Xu, Yanan; Azari, Sara; Yu, Sirong

    2014-01-01

    Piezoelectric composites comprising an active phase of ferroelectric ceramic and a polymer matrix have recently found numerous sensory applications. However, it remains a major challenge to further improve their electromechanical response for advanced applications such as precision control and monitoring systems. We here investigated the incorporation of graphene platelets (GnPs) and multi-walled carbon nanotubes (MWNTs), each with various weight fractions, into PZT (lead zirconate titanate)/epoxy composites to produce three-phase nanocomposites. The nanocomposite films show markedly improved piezoelectric coefficients and electromechanical responses (50%) besides an enhancement of ∼200% in stiffness. The carbon nanomaterials strengthened the impact of electric field on the PZT particles by appropriately raising the electrical conductivity of the epoxy. GnPs have been proved to be far more promising in improving the poling behavior and dynamic response than MWNTs. The superior dynamic sensitivity of GnP-reinforced composite may be caused by the GnPs’ high load transfer efficiency arising from their two-dimensional geometry and good compatibility with the matrix. The reduced acoustic impedance mismatch resulting from the improved thermal conductance may also contribute to the higher sensitivity of GnP-reinforced composite. This research pointed out the potential of employing GnPs to develop highly sensitive piezoelectric composites for sensing applications. (paper)

  20. A Astronomia no Ensino Superior Brasileiro entre 1808 e 1889

    Science.gov (United States)

    Bretones, Paulo S.; Videira, Antonio A. P.

    2003-05-01

    Este artigo apresenta os principais eventos ocorridos na história do ensino de astronomia nos cursos superiores que existiram no Brasil desde a chegada da Família Real portuguesa em 1808 até o final do período monárquico. Para compor esse esboço histórico, utilizamos, principalmente, livros didáticos, regulamentos, decretos e leis responsáveis pelas organizações dos conteúdos oferecidos e das carreiras dos responsáveis pela disciplina. Na análise do material empregado, investigamos a presença de concepções filosóficas e científicas, que podem ter norteado os conteúdos disciplinares. Não realizamos nenhuma comparação com o ensino de astronomia em outros países. Concluímos mostrando que o estudo de astronomia, durante o período monárquico, foi mais direcionado para a formação d engenheiros do que astrônomos. Gostaríamos de observar que o presente artigo não tem a pretensão de abordar o assunto de maneira completa e detalhada.

  1. Autologous chondrocyte implantation: superior biologic properties of hyaline cartilage repairs.

    Science.gov (United States)

    Henderson, Ian; Lavigne, Patrick; Valenzuela, Herminio; Oakes, Barry

    2007-02-01

    Information regarding the quality of autologous chondrocyte implantation repair is needed to determine whether the current autologous chondrocyte implantation surgical technology and the subsequent biologic repair processes are capable of reliably forming durable hyaline or hyaline-like cartilage in vivo. We report and analyze the properties and qualities of autologous chondrocyte implantation repairs. We evaluated 66 autologous chondrocyte implantation repairs in 57 patients, 55 of whom had histology, indentometry, and International Cartilage Repair Society repair scoring at reoperation for mechanical symptoms or pain. International Knee Documentation Committee scores were used to address clinical outcome. Maximum stiffness, normalized stiffness, and International Cartilage Repair Society repair scoring were higher for hyaline articular cartilage repairs compared with fibrocartilage, with no difference in clinical outcome. Reoperations revealed 32 macroscopically abnormal repairs (Group B) and 23 knees with normal-looking repairs in which symptoms leading to arthroscopy were accounted for by other joint disorders (Group A). In Group A, 65% of repairs were either hyaline or hyaline-like cartilage compared with 28% in Group B. Autologous chondrocyte repairs composed of fibrocartilage showed more morphologic abnormalities and became symptomatic earlier than hyaline or hyaline-like cartilage repairs. The hyaline articular cartilage repairs had biomechanical properties comparable to surrounding cartilage and superior to those associated with fibrocartilage repairs.

  2. Treatment of symptomatic isolated dissection of superior mesenteric artery.

    Science.gov (United States)

    Dong, Zhihui; Fu, Weiguo; Chen, Bin; Guo, Daqiao; Xu, Xin; Wang, Yuqi

    2013-02-01

    To present the short- to midterm outcomes after management of 14 patients with symptomatic isolated dissection of superior mesenteric artery (SIDSMA) and propose a preliminary treatment algorithm. SIDSMA is a rare but potentially fatal entity. However, most of these reports were isolated case reports, and a consensus treatment protocol remains lacking so far. It would be meaningful to propose a reasonable treatment algorithm for it. Patients with SIDSMA who were treated in our center between July 2007 and June 2011 were retrospectively collected and analyzed. Based upon the abdominal pain and signs, the clinical manifestations have been retrospectively classified into grade I (peritonitis absent) and grade II (peritonitis present). Medical treatment mainly included anticoagulation, antiplatelet, and bowel rest. Endovascular stent placement and surgical fenestration with exploratory laparotomy have been selected according to the grade classification. Computed tomographic angiography, magnetic resonance angiography, or duplex scans have been used for diagnosis and follow-up. Fourteen consecutive patients with SIDSMA were collected; among them, 13 cases belonged to grade I and one to grade II. The mean duration from the onset to the admission was 12 ± 12 days (range, 0.5-45 days). The mean distance from the primary tear to the ostium of superior mesenteric artery (SMA) was 26 ± 4 mm (range, 15-32 mm). Medical treatment was given for 13 patients of grade I for the first 3 to 5 days after admission, and the abdominal pain remarkably or completely resolved in four patients who received continued medical treatment, whereas the other unresolved nine patients were converted to endovascular stent placement that succeeded in four and failed in five patients. Since these five cases were free from peritoneal signs, medical treatment was given again instead of an immediate surgical intervention, and ultimately achieved complete alleviation of abdominal pain within the

  3. Age and growth of the whitefish in Lake Superior

    Science.gov (United States)

    Dryer, William R.

    1963-01-01

    The average annual commercial production of whitefish in the U.S. waters of Lake Superior dropped from 2,194,000 pounds in 1879-1908 to 504,000 pounds in 1911-59. The modern production, though far below the earlier, has accounted for more than 10 percent of the total value of the fishery in all but one of the last 20 years. Data are given on growth rate, age and year-class composition, size distribution, and length-weight relation of 1,800 fish collected in 1957-59 at Bayfield, Wis., and Marquette, Whitefish Point, and Dollar Settlement, Mich. Studies of the body-scale relation, sex ratio, and age and size at maturity were limited to fish collected at Bayfield. The age composition and mean age varied widely by port and year of capture. Oldest fish were those of the 1957 Bayfield samples which were dominated by age group VII and averaged 5.5 years old. The youngest were from Whitefish Point in 1959; age-group III was dominant, and the mean age was 3.2 years. The evidence on the strength of year classes was not clear-cut, but it was obvious that fluctuations in stocks of different areas were largely independent. The percentage of legal-size fish (17 inches or longer) in age groups ranged widely; only 8.6 percent of the V group were legal in the 1957 Bayfield collections, whereas 100 percent of fish of the same age were legal in the 1957-59 collections from Whitefish Point. The weight of whitefish in the combined samples increased as the 3.2408 power of the length. The growth rate from the fastest to the slowest growing stocks ranked as follows: Whitefish Point; Dollar Settlement and Marquette (fish from the two ports reversed ranks after 3 years); Bayfield. The major differences in growth in length among the various stocks occurred during the first years of life. Beyond the fifth year the annual increments were nearly the same in all stocks. The whitefish from Whitefish Point, Dollar Settlement, and Marquette are among the fastest growing in the Great Lakes. The

  4. Entornos de aprendizaje mixto en educación superior

    Directory of Open Access Journals (Sweden)

    Antonio Bartolomé Pina

    2008-06-01

    Full Text Available En la segunda mitad de los años noventa irrumpió con fuerza en la Educación Superior un diseño de formación basado exclusivamente en TIC soportando entornos no presenciales: el “e-learning”. Al mismo tiempo, los entornos presenciales comenzaron a incorporar esas mismas tecnologías, lo que ha derivado en el “Blended Learning”. La mayoría de diseños e-learning no se diferencian de los diseños clásicos de EaD, aunque enriquecidos con tecnología. El nuevo siglo ha traído dos líneas diferentes de evolución: una la de quienes han percibido que los diseños e-learning suponían algo más que el uso de tecnología y han comenzado a trabajar sobre nuevos diseños, por ejemplo en entornos centrados en el “contenedor”, entornos abiertos, etc. La otra ha incorporado espacios de presencialidad evolucionando hacia el Blended Learning. Se entiende por Blended Learning un sistema en el que se mezclan situaciones de presencialidad y no presencialidad, recurriendo a las tecnologías más adecuadas para cada necesidad. Este artículo repasará algunas de esas tecnologías, tratando de ofrecer las claves para un modelo general de BL.

  5. Percutaneous treatment of superior vena cava syndrome using metallic stents

    International Nuclear Information System (INIS)

    De Gregorio Ariza, Miguel Angel; Gimeno, Maria Jose; Alfonso, Eduardo; Mainar, Antonio; Medrano, Joaquin; Lopez-Marin, Paloma; Gamboa, Pablo; Tobio, Ricardo; Herrera, Marcos

    2003-01-01

    The purpose of this study was to evaluate the results of treatment of superior vena cava syndrome (SVCS) in patients with benign and malignant disease using expandable metallic stent. From January 1995 to April 2000, 87 expandable stents were implanted in 82 patients (59 men, 23 women; mean age 57.8 years, age range 39-79 years) for the treatment of SVCS. The SVCS was defined as symptomatic bilateral obstruction of venous drainage from head, neck and upper extremities. In 68 patients SVCS was due to malignant neoplasia, and in 14 cases it was due to benign aetiology. All patients were treated with expandable stent. We implanted 81 Wallstent prostheses and 6 Palmaz stents. Adjuvant thrombolysis was applied in 12 patients who required fibrinolysis. After recanalization, the stent was implanted in all cases in SVC (infra- or supra-azygos vein). All patients were treated with heparin of low molecular weight (HBPM) during 6 months. Patency was analyzed according to clinical symptoms and Doppler US or venograms exploration. Technical success was observed in all cases. Clinical success was reached in 78 of 82 patients (95.1%) (absence of symptoms in 2 or 3 days). Four patients suffered immediate thrombosis which required fibrinolitic treatment with a new prosthesis placement in 1 case. The follow-up for the malignant process was of 7.1 months (range 1-39 months) and in benign cases was 31.2 months (range 11-61 months). Sixty-two (91.1%) patients with malignancy died without SVCS symptomatology. All the patients with benign pathology are alive. Clinical primary patency in malignant cases was 87% with assisted patency of 96.2%. Endovascular therapy using metallic stent and thrombolysis is a successful method to treat SVCS due to benign or malignant aetiology. (orig.)

  6. O ENSINO SUPERIOR EM TURISMO: HUMANO OU MERCADO?

    Directory of Open Access Journals (Sweden)

    Waléria Thabata Roldão Niquini

    2013-06-01

    Full Text Available Desde La creación de la educación superior en el Turismo en Brasil, en La década de 1970, se han producido algunas discusiones en relación a la formación del estudiante y su desempeño en el mercado laboral. Sin embargo hay varios puntos educativos significantes incluso antes de la aparición de la inserción profesional. La preparación de los estudiantes, las acciones de los maestros en la esfera de investigación y extensión y la necesidad del pensamiento crítico son supuestos que poden justificar tal curso mientras que la práctica educativa libertadora. Estas son las cuestiones discutidas en esta investigación destinada a comprender las perspectivas docente y dicente, en la licenciatura en Turismo, sobre la relación entre la enseñanza y el aprendizaje y sus aspectos esenciales, en una más amplia visión y menos fragmentada, entre la destacada dicotomía y el mercado de laboro y el pensamiento crítico científico. Se concluye que el debate académico sobre la educación en el Turismo todavía se disocia sólo entre los intereses del mercado y las discusiones humanas, sin una integración profunda en la relación enseñanza-aprendizaje.

  7. Lesiones traumáticas del raquis cervical superior

    Directory of Open Access Journals (Sweden)

    Esteban Roig Fabré

    2003-06-01

    Full Text Available Se efectúa un análisis acerca de las lesiones del raquis cervical superior. Se estudiaron 30 pacientes atendidos en el Servicio de Neurocirugía del Hospital Universitario "General Calixto García", que constituyen el universo de casos que acudió con este tipo de lesión, en el período comprendido entre septiembre de 1996 y septiembre de 1999. Se describen características sociodemográficas, clínicas e imagenológicas de los pacientes. El síntoma dominante por excelencia fue el dolor occipito-cervical, y en la mayoría de los enfermos quedó intacto el funcionamiento neurológico. Se discuten los resultados y se ofrecen recomendaciones con vistas a contribuir a una utilización más eficiente de los recursos imagenológicos en el diagnóstico y tratamiento de estas afeccionesAn analysis is made about the injuries of the upper cervical rachis. The 30 patients with this type of injury that received attention at the Neurosurgery Service of "General Calixto García" Teaching Hospital from September, 1996, to September, 1999, were included in the study. Sociodemographic, clinical and imgaing features of the patients are described. The predominant symptom was occipitocervical pain and in most of the patients the neurological functioning was intact. The results were discussed and recommendations were made to contribute to a more efficient use of the imaging resources in the diagnosis and treatment of these affections

  8. Variations in superior thyroid artery: A selective angiographic study

    International Nuclear Information System (INIS)

    Gupta, Pankaj; Bhalla, Ashu Seith; Thulkar, Sanjay; Kumar, Atin; Mohanti, Bidhu Kalyan; Thakar, Alok; Sharma, Atul

    2014-01-01

    To investigate variations in superior thyroid artery (STA) based on digital subtraction angiography (DSA). Twenty five angiography studies of 15 pts performed between June 2010 and December 2012 were retrospectively evaluated. These patients underwent DSA of the head and neck region as a part of their superselective neoadjuvant intra-arterial chemotherapy protocol for treatment of laryngeal and hypopharyngeal cancers. Depending upon the location of the tumor, unilateral or bilateral arteriograms of common carotid artery (CCA), external carotid artery (ECA), and STA were performed. Arteriograms were evaluated for the site of origin and branching pattern of STA. STA anatomy was ascribed to one of the three branching patterns. A total of 25 angiograms were evaluated, including 14 right and 11 left. On the right side, STA was noted to arise from ECA in 10 (71.5%), bifurcation of CCA in 3 (21.5%), and CCA in 1 (7%) patient. Left STA was seen to arise from ECA in 8 (72.5%), bifurcation of CCA in 2 (18.5%), and internal carotid artery (ICA) in 1 (9%) patient. Type III branching pattern (non-bifurcation, non-trifurcation) was found to be the most frequent (52%). Infrahyoid branch was found to be the most consistent in terms of its origin from STA. Origin of STA is predictable, arising from ECA in more than 70% cases. Branching pattern of STA, following origin from ECA, is, however, highly variable. Knowledge concerning the origin and branching pattern of STA is essential in enhancing precision and decreasing morbidity related to the surgical and interventional radiological head and neck procedures

  9. Experiencing the changing climate on the shores of Lake Superior

    Science.gov (United States)

    Akerlof, K.; Maibach, E.

    2011-12-01

    The Great Lakes of the United States - the largest freshwater system in the world - have been termed "the canary in the coal mine" of environmental change. To assess if and how residents of Alger County, Michigan are experiencing changes in climate on the shores of Lake Superior, during the summer of 2010 we conducted a representative household mail survey in collaboration with a national lakeshore and watershed partnership. A total of 765 adult residents (18 years or older) responded to the survey; a 57% survey completion rate. We content analyzed respondents' open-ended characterizations of how they have personally experienced global warming, and compared the results with land surface and storm data for the same geographic region to see whether public perceptions of local changes match trends in National Climatic Data Center data. Just over a quarter of residents (27%) indicated that they had personally experienced global warming. Those who had were most likely to say that they had experienced global warming locally (as opposed to in other locations of the country or globally), and most frequently cited changes in seasons, weather, lake levels, and animals or plant species. However, some local public perceptions appeared to conflict with weather records. For example, residents were more likely to say that they had been experiencing less snow in the winters, while NCDC data suggests the reverse is true. As climate changes differentially in regions across the United States, the public will in turn experience its physical impacts in distinct ways that are unique to each landscape. This may be counter-intuitive to a public that increasingly experiences the world, and issues such as climate change, through sources of information such as national news media that operate at much larger geographic scales. Understanding where these forms of cognitive dissonance may arise may assist researchers, educators, and communicators in furthering discourses with the public about

  10. MRI appearance of the superior transverse scapular ligament

    Energy Technology Data Exchange (ETDEWEB)

    Simeone, F.J.; Bredella, Miriam A.; Chang, Connie Y.; Torriani, Martin; Huang, Ambrose J. [Massachusetts General Hospital, Department of Radiology, Division of Musculoskeletal Imaging and Intervention, Boston, MA (United States)

    2015-11-15

    The superior transverse scapular ligament (STSL) forms the roof of the suprascapular notch, which is the most common location of entrapment of the suprascapular nerve, a cause of shoulder pain and weakness. The purpose of this study is to determine the frequency of visualization of the STSL on routine shoulder MRIs, to identify the sequences and imaging planes on which it is visualized most frequently, and to describe its typical MRI appearance, none of which have been previously addressed in the radiologic literature. One hundred twenty-one consecutive shoulder MRIs were reviewed for the presence or absence of the STSL, including the imaging plane and sequence that best depicted the ligament. Dimensions of the ligament were recorded. Fifty four of 121 shoulder MRIs were technically adequate for visualization of the STSL, and it was identified on 51 of these studies (94 %). There was no statistically significant difference between 1.5-T and 3-T systems. The best individual sequence for visualizing the STSL was the sagittal T1-weighted sequence, in which the STSL was visible on 75/80 technically adequate sequences (94 %). The sagittal plane was the best plane for visualizing the STSL, in which it was visible on 65/69 technically adequate studies (94 %). The STSL on average measured 12.8 ± 1.5 mm in transverse dimension. The STSL can be visualized on the majority of shoulder MRIs and is best seen on sagittal T1-weighted images on our imaging protocol. Evaluation of the STSL can potentially help in identifying pathologic conditions affecting the suprascapular nerve. (orig.)

  11. The synaptic pharmacology underlying sensory processing in the superior colliculus.

    Science.gov (United States)

    Binns, K E

    1999-10-01

    The superior colliculus (SC) is one of the most ancient regions of the vertebrate central sensory system. In this hub afferents from several sensory pathways converge, and an extensive range of neural circuits enable primary sensory processing, multi-sensory integration and the generation of motor commands for orientation behaviours. The SC has a laminar structure and is usually considered in two parts; the superficial visual layers and the deep multi-modal/motor layers. Neurones in the superficial layers integrate visual information from the retina, cortex and other sources, while the deep layers draw together data from many cortical and sub-cortical sensory areas, including the superficial layers, to generate motor commands. Functional studies in anaesthetized subjects and in slice preparations have used pharmacological tools to probe some of the SC's interacting circuits. The studies reviewed here reveal important roles for ionotropic glutamate receptors in the mediation of sensory inputs to the SC and in transmission between the superficial and deep layers. N-methyl-D-aspartate receptors appear to have special responsibility for the temporal matching of retinal and cortical activity in the superficial layers and for the integration of multiple sensory data-streams in the deep layers. Sensory responses are shaped by intrinsic inhibitory mechanisms mediated by GABA(A) and GABA(B) receptors and influenced by nicotinic acetylcholine receptors. These sensory and motor-command activities of SC neurones are modulated by levels of arousal through extrinsic connections containing GABA, serotonin and other transmitters. It is possible to naturally stimulate many of the SC's sensory and non-sensory inputs either independently or simultaneously and this brain area is an ideal location in which to study: (a) interactions between inputs from the same sensory system; (b) the integration of inputs from several sensory systems; and (c) the influence of non-sensory systems on

  12. Endovascular Therapeutic Approaches for Acute Superior Mesenteric Artery Occlusion

    International Nuclear Information System (INIS)

    Acosta, S.; Sonesson, B.; Resch, T.

    2009-01-01

    The purpose of this study was to characterize the outcome of attempted endovascular intervention in patients with acute embolic or thrombotic superior mesenteric artery (SMA) occlusion. The records of 21 patients during a 3-year period between 2005 and 2008 were retrieved from the in-hospital registry. The first group included 10 patients (6 women and 4 men; median age 78 years) with acute embolic occlusion of the SMA. The median duration of symptoms from symptom onset to angiography was 30 hours (range 6 to 120). Synchronous emboli (n = 12) occurred in 6 patients. Embolus aspiration was performed in 9 patients, and 7 of these had satisfactory results. Complementary local thrombolysis was successful in 2 of 3 patients. Residual emboli were present at completion angiography in all 7 patients who underwent successful aspiration embolectomy, and bowel resection was necessary in only 1 of these patients. One serious complication occurred because of a long SMA dissection. The in-hospital survival rate was 90% (9 of 10 patients). The second group included 11 patients (10 women and 1 man; median age 68 years) with atherosclerotic acute SMA occlusions. The median time of symptom duration before intervention was 97 hours (range 17 to 384). The brachial, femoral, and SMA routes were used in 6, 7, and 5 patients, respectively. SMA stenting was performed through an antegrade (n = 7) or retrograde (n = 3) approach. Bowel resection was necessary in 4 patients. No major complications occurred. The in-hospital survival rate was 82% (9 of 11 patients). Endovascular therapy of acute SMA occlusion provides a good alternative to open surgery.

  13. Surgical treatment of superior oblique palsy: Predictors of outcome

    Directory of Open Access Journals (Sweden)

    Pilar Merino Sanz

    2017-01-01

    Full Text Available Purpose: The purpose of this study was to evaluate the incidence and outcome of surgically treated superior oblique palsy (SOP and the factors involved in its resolution. Methods: We performed a retrospective study of 76 patients who underwent surgery for SOP. We recorded data from the physical examination and the number and type of procedures performed. Favorable outcome was defined as resolution of or improvement in torticollis (≤5° and diplopia in primary position (PP and downgaze or as vertical deviation (VD <5 prism diopters (pd in PP and 10 pd in the oblique diagnostic position. Results: Mean age was 33.12 years. Congenital SOP was the most frequent type (65.8%. Mean preoperative VD was 15.89 ± 9.94 pd, decreasing to 3.07 ± 4.36 pd after surgery. Associated horizontal deviation was recorded in 51.32% of cases. The mean number of procedures was 1.37 ± 0.62 (range 1–4, with 69.7% of patients requiring only one procedure. The mean number of muscles operated on was 1.96 ± 1.01 (inferior oblique being the most frequent. A greater reduction in VD after surgery was observed in patients with congenital SOP (P = 0.04. Although none of the factors evaluated influenced surgical outcome, amblyopic patients had a greater risk of reoperation (P = 0.04. A favorable outcome was achieved in 75% of cases. Mean follow-up was 37.08 months. Conclusion: Congenital SOP was twice as frequent as acquired SOP and although surgery was successful in most cases, a greater reduction in VD was obtained in congenital cases. Amblyopia was identified as a risk factor for reoperation.

  14. Early endovascular treatment of superior mesenteric occlusion secondary to thromboemboli.

    Science.gov (United States)

    Jia, Z; Jiang, G; Tian, F; Zhao, J; Li, S; Wang, K; Wang, Y; Jiang, L; Wang, W

    2014-02-01

    To evaluate our early experience with endovascular revascularization in patients with acute thromboembolic occlusion of the superior mesenteric artery (SMA). A retrospective review was conducted of all patients who underwent endovascular revascularization for acute thromboembolic SMA occlusion from May 2005 to May 2012. Endovascular revascularization was performed using aspiration, intra-arterial thrombolysis, and adjunctive stent-placement techniques. Laparotomy was performed if the patient developed clinical signs of advanced bowel ischemia after endovascular procedure. Twenty-one patients underwent endovascular revascularization for acute thromboembolic SMA occlusion. All presented with acute-onset abdominal pain. Three patients had rebound tenderness before the procedure. Computed tomography angiography revealed complete occlusion in seven cases and incomplete occlusion in 14 cases, with no evidence of free gas or bowel necrosis. The median duration from onset of symptoms to revascularization was 8.7 ± 4.1 hours (range, 2-18 hours). Completely successful endovascular revascularization occurred in six cases (aspiration alone, 3 cases; combined aspiration and urokinase, 3 cases); partial success was achieved in 15 cases (aspiration alone, 4 cases; combined aspiration and urokinase, 10 cases; and combined aspiration, urokinase, and stent placement, 1 case). Laparotomy was required in five patients, all of whom had SMA main trunk complete occlusion and required small bowel resection. The 30-day mortality for all patients was 9.5%. During a median follow-up of 26 months, 15 patients remained asymptomatic, three patients reported occasional abdominal pain, and one patient had temporary short-bowel syndrome. Percutaneous revascularization is a promising alternative to surgery for acute SMA occlusion in selected patients who have no signs of advanced bowel ischemia. Early diagnosis followed by prompt endovascular intervention with close postprocedural monitoring is

  15. Human forniceal region is the stem cell-rich zone of the conjunctival epithelium.

    Science.gov (United States)

    Harun, Mohd Hairul Nizam; Sepian, Siti Norzalehawati; Chua, Kien-Hui; Ropilah, Abd Rahman; Abd Ghafar, Norzana; Che-Hamzah, Jemaima; Bt Hj Idrus, Ruszymah; Annuar, Faridah Hanom

    2013-03-01

    The anterior surface of the eye is covered by several physically contiguous but histologically distinguishable epithelia overlying the cornea, limbus, bulbar conjunctiva, fornix conjunctiva, and palpebral conjunctiva. The self-renewing nature of the conjunctival epithelia makes their long-term survival ultimately dependent on small populations of stem cells. Hence, the objective of this study was to investigate the expression of the stem cell genes Sox2, OCT4, NANOG, Rex1, NES, and ABCG2 in cultured human conjunctival epithelium from different conjunctival zones, namely, the bulbar, palpebral and fornix zones. Three samples were taken from patients with primary pterygium and cataract (age range 56-66 years) who presented to our eye clinic at the UKM Medical Centre. The eye was examined with slit lamp to ensure there was no underlying ocular surface diseases and glaucoma. Conjunctival tissue was taken from patients who underwent a standard cataract or pterygium operation as a primary procedure. Tissues were digested, cultured, and propagated until an adequate number of cells was obtained. Total RNA was extracted and subjected to expression analysis of conjunctival epithelium genes (KRT4, KRT13, KRT19) and stem cell genes (Sox2, OCT4, NANOG, Rex1, NES, ABCG2) by reverse transcriptase-PCR and 2% agarose gel electrophoresis. The expression of Sox2, OCT4, and NANOG genes were detected in the fornical cells, while bulbar cells only expressed Sox2 and palpebral cells only expressed OCT4. Based on these results, the human forniceal region expresses a higher number of stem cell genes than the palpebral and bulbar conjunctiva.

  16. Superior Administrative Court Baden-Wuerttemberg. Judgement of March 30, 1982 (Wyhl)

    International Nuclear Information System (INIS)

    Anon.

    1983-01-01

    Presentation and discussion of the leading statements of the decision delivered by the Mannheim Superior Administrative Court on March 30, 1982 concerning the Wyhl nuclear power plant, unit 1. With this decision, covering 548 pages, the Superior Administrative Court changed the decision of the Freiburg Administrative Court of the year 1977 and finally dismissed the action for annulment of the construction licence. The Superior Administrative Court acted upon the appeal brought in by the Land and the plant operator, Kernkraftwerksgesellschaft. (CB) [de

  17. Accommodation and convergence palsy caused by lesions in the bilateral rostral superior colliculus.

    Science.gov (United States)

    Ohtsuka, Kenji; Maeda, Sachie; Oguri, Naomi

    2002-03-01

    To report a patient who developed accommodation and convergence palsy caused by lesions in the bilateral rostral superior colliculus. Observational case report. A 30-year-old right-handed man experienced sudden onset of diplopia and blurred vision at near vision. The patient showed accommodation and convergence palsy. Magnetic resonance imaging revealed lesions located in the bilateral rostral superior colliculus. These findings suggest that the rostral superior colliculus is involved in the control of accommodation and vergence eye movements.

  18. An MRI Study of Superior Temporal Gyrus Volume in Women With Schizotypal Personality Disorder

    OpenAIRE

    Dickey, Chandlee C.; McCarley, Robert William; Voglmaier, Martina M.; Niznikiewicz, Margaret A.; Seidman, Larry Joel; Demeo, Susan; Frumin, Melissa; Shenton, Martha Elizabeth

    2003-01-01

    Objective: An abnormal superior temporal gyrus has figured prominently in schizophrenia research, and left superior temporal gyrus volume has been shown to be smaller in male subjects with schizotypal personality disorder. This is the first structural magnetic resonance imaging study to examine a group of female subjects with schizotypal personality disorder. Method: The superior temporal gyrus was drawn on coronal images acquired from female subjects recruited from the community (schizotypal...

  19. Dramatización creativa en docencia superior de ciencias

    Directory of Open Access Journals (Sweden)

    Alberto Domingo

    2013-11-01

    Full Text Available La dramatización creativa es una estrategia didáctica con muchos antecedentes (Ward, W. Creative Dramatics. D. Appleton & Co., N.Y. 1930, pero poco conocida en la enseñanza superior de ciencias (Scherr, R.E., et al. PER Conference 2010, 1289:293-296. Es una estrategia educativa sin finalidad de exhibición y percibida como improvisada por los participantes, los cuales interpretan y recrean un proceso con sus acciones guiadas sobre la marcha por un instructor. Su propósito no es formar actores ni actuar para otros, sino facilitar la adquisición de un conocimiento desde la vivencia interna y la autoobservación. En humanidades suele consistir en la interpretación de roles humanos o sociales en situaciones determinadas, pero en ciencias es una representación figurada de un proceso científico complejo, donde los participantes asumen el papel de distintos componentes o elementos que intervienen, teniendo que representar objetos o conceptos abstractos y alejados de la percepción real o de la escala humana. La dramatización facilita el aprendizaje significativo y la clarificación de conceptos abstractos, así como la comprensión de procesos complejos a través de una toma de consciencia “desde dentro” de los propios elementos que juegan un papel en los mismos (Michael, J. In pursuit of meaningful learning. Advances in Physiology Education, 2001, 25:145-158; Dee Fink, L. Creating Significant Learning Experiences: An Integrated Approach to Designing College Courses. 2003, Josey-Bass, Wiley. San Francisco, CA 94103-1741. Esta actividad promueve un aprendizaje mediante la autoobservación, aprovechando la capacidad humana natural de representar la propia percepción de fenómenos complejos para comprenderlos. La dramatización creativa estimula el pensamiento lógico e intuitivo, interioriza el conocimiento y genera un placer estético que facilita un aprendizaje significativo y memorable. En esta comunicación se presentan ejemplos pr

  20. El Paleolítico Superior en la Meseta

    Directory of Open Access Journals (Sweden)

    Sergio Ripoll López

    1997-01-01

    Full Text Available En el presente artículo se realiza una revisión de las evidencias arqueológicas y artísticas encuadrables en el Pleistoceno Superior Final de la Meseta castellana. La falta de información arqueológica que se tieen sobre este período es debida, más al escaso auge y a la precariedad de resultados en la investigación sobre esta fase de la Prehistoria en nuestra región que a una realidad objetiva. La abundancia de yacimientos con arte correspondiente a este momento no puede realicionarse, con un vacío de referencias arqueológicas pero, todavía tioy, es muy difícil establecer sobre elementos materiales, y sobre todo, estatigráficos, el contexto cronológico y cultural en el que se produciría el desarrollo de los procesos artísticos del interior peninsular. De cualquier forma esperamos que en un futuro próximo se produzca un sustancial avance en el estudio de esta etapa en el área concreta.In ttie present paper is accomplished a review of the archaeologic and artistic evidence during the Upper Pleistocene in the Castilian Plateau. The lack of archaeologic Information that has on this period is had to, more to the scarce summit and to the results precariousness in the investigation on this phase of the Prehistory in our región than to an objective reality. The abundance of deposits with corresponding art to this moment can not be related, to an archaeologic references vacuum but, still today, it is very difficult to establish on material elements and, above all, stratigraphics, the chronological and cultural context in the one which would be produced the development of the artistic procesaos of the peninsular interior. In any way we wait that in a nex future is produced a substantial advance in the study of this stage in the concrete área. 

  1. Is thoracoscopic patent ductus arteriosus closure superior to conventional surgery?

    Science.gov (United States)

    Stankowski, Tomasz; Aboul-Hassan, Sleiman Sebastian; Marczak, Jakub; Cichon, Romuald

    2015-10-01

    A best evidence topic in cardiac surgery was written according to a structured protocol. The question addressed was whether thoracoscopic patent ductus arteriosus (PDA) closure is superior to conventional surgery. Altogether 821 papers were found using the reported search, 11 of which represented the best evidence to answer the clinical question. The authors, journal, date and country of publication, patient group studied, study type, relevant outcomes and results of these papers are tabulated. Eleven studies included in the analysis consisted of two prospective and three retrospective, non-randomized studies and six case series. Four included studies focused only on preterm infants, three studies enrolled neonates and the other four analysed all age groups from neonates to older children or young adults. There were no differences in mortality between video-assisted thoracoscopic surgery (VATS) and conventional surgery. Two studies suggested that VATS offers shorter operative times. Two papers observed shorter hospital stay, although the other two noted no significant difference. A large prospective trial found VATS to be associated with a lower number of postoperative complications in neonates and infants, whereas other studies suggested no significant differences in short-term postoperative complications. There is little evidence to suggest better musculoskeletal status and cosmesis in neonates following VATS. Conversion from thoracoscopy to thoracotomy described in six papers was seldom and it did not lead to any additional complications. All observational studies confirmed that both techniques are free from major adverse cardiovascular complications and these two techniques can be safely used in all patients qualified for surgical PDA closure. Two studies compared cost-effectiveness between the two techniques; one of them described VATS as significantly more cost-efficient, whereas the other study observed no difference. However, it should be noted that data

  2. Lateralization for dynamic facial expressions in human superior temporal sulcus.

    Science.gov (United States)

    De Winter, François-Laurent; Zhu, Qi; Van den Stock, Jan; Nelissen, Koen; Peeters, Ronald; de Gelder, Beatrice; Vanduffel, Wim; Vandenbulcke, Mathieu

    2015-02-01

    Most face processing studies in humans show stronger activation in the right compared to the left hemisphere. Evidence is largely based on studies with static stimuli focusing on the fusiform face area (FFA). Hence, the pattern of lateralization for dynamic faces is less clear. Furthermore, it is unclear whether this property is common to human and non-human primates due to predisposing processing strategies in the right hemisphere or that alternatively left sided specialization for language in humans could be the driving force behind this phenomenon. We aimed to address both issues by studying lateralization for dynamic facial expressions in monkeys and humans. Therefore, we conducted an event-related fMRI experiment in three macaques and twenty right handed humans. We presented human and monkey dynamic facial expressions (chewing and fear) as well as scrambled versions to both species. We studied lateralization in independently defined face-responsive and face-selective regions by calculating a weighted lateralization index (LIwm) using a bootstrapping method. In order to examine if lateralization in humans is related to language, we performed a separate fMRI experiment in ten human volunteers including a 'speech' expression (one syllable non-word) and its scrambled version. Both within face-responsive and selective regions, we found consistent lateralization for dynamic faces (chewing and fear) versus scrambled versions in the right human posterior superior temporal sulcus (pSTS), but not in FFA nor in ventral temporal cortex. Conversely, in monkeys no consistent pattern of lateralization for dynamic facial expressions was observed. Finally, LIwms based on the contrast between different types of dynamic facial expressions (relative to scrambled versions) revealed left-sided lateralization in human pSTS for speech-related expressions compared to chewing and emotional expressions. To conclude, we found consistent laterality effects in human posterior STS but not

  3. Anatomical relation between S1 sacroiliac screws' entrance points and superior gluteal artery.

    Science.gov (United States)

    Zhao, Yong; You, Libo; Lian, Wei; Zou, Dexin; Dong, Shengjie; Sun, Tao; Zhang, Shudong; Wang, Dan; Li, Jingning; Li, Wenliang; Zhao, Yuchi

    2018-01-18

    To conduct radiologic anatomical study on the relation between S1 sacroiliac screws' entry points and the route of the pelvic outer superior gluteal artery branches with the aim to provide the anatomical basis and technical reference for the avoidance of damage to the superior gluteal artery during the horizontal sacroiliac screw placement. Superior gluteal artery CTA (CT angiography) vascular imaging of 74 healthy adults (37 women and 37 men) was done with 128-slice spiral CT (computed tomography). The CT attendant-measuring software was used to portray the "safe bony entrance area" (hereinafter referred to as "Safe Area") of the S1 segment in the standard lateral pelvic view of three-dimensional reconstruction. The anatomical relation between S1 sacroiliac screws' Safe Area and the pelvic outer superior gluteal artery branches was observed and recorded. The number of cases in which artery branches intersected the Safe Area was counted. The cases in which superior gluteal artery branches disjointed from the Safe Area were identified, and the shortest distance between the Safe Area and the superior gluteal artery branch closest to the Safe Area was measured. Three cases out of the 74 sample cases were excluded from this study as they were found to have no bony space for horizontal screw placement in S1 segment. Among the remaining 71 sample cases, there are 32 cases (45.1%) where the deep superior branch of superior gluteal artery passes through the Safe Area of S1 entrance point. There was no distinguishing feature and rule on how the deep superior branches and the Safe Area overlapped. In the 39 cases in which superior gluteal artery branches disjointed from the Safe Area, the deep superior branches of superior gluteal artery were the branches closest to the Safe Area and the part of the branch closest to the Safe Area was located in front of the widest part of the Safe Area. The shortest distance between the deep superior branch and the Safe Area is 0.86

  4. Squamous cell carcinoma of the conjunctiva: analysis of fifteen cases

    International Nuclear Information System (INIS)

    Baig, M.S.A.; Dareshani, S.; Ali, M.A.; Khan, M.S.

    2009-01-01

    To document various clinical presentations and management options of conjunctival squamous cell carcinoma (CSCC) in patients attending ophthalmic out patients department (OPD) of a tertiary care centre. This case series was carried out in the Department of Ophthalmology Civil Hospital and, Dow University of Health Sciences, Karachi and were reviewed from June 2004 to December 2007. Socio-demographic data and clinical features of patients with biopsy proven conjunctival squamous cell carcinoma were recorded and analysed. All patients underwent complete ophthalmic examination by a fellow ophthalmologist and clinical findings were recorded on a prescribed Performa. Data was analysed in terms of frequency, means and median by SPSS for windows V.15. Seventy-two percent of the patients were male and 28% were female, more than 80% of patients were in the age group of seventy years and above. Eighteen percent of patients developed intraocular invasion and the eyes had to be enucleated. CSCC occurs in sun damaged ocular surface usually at limbus, elderly men are more commonly involve, recurrence is a feature of disease and high risk in older individual. In our treatment we used various therapies, excision with clear margin, topical mitomycin C adjunctive cryotherapy and amniotic graft. (author)

  5. Squamous cell carcinoma of the conjunctiva in Ilorin, Nigeria ...

    African Journals Online (AJOL)

    The aim was to determine the incidence of conjunctival squamous cell carcinoma at UITH over an 11 – year period. Nineteen patients (11males and 8 females) had histological confirmation of conjunctival squamous cell carcinoma out of 21 conjunctival specimens, representing 22.9% of all orbito-ocular tumours reviewed ...

  6. Why do employees follow their superiors' instructions? Identification of the reasons to comply with superiors' will in a group of Polish employees.

    Science.gov (United States)

    Wójcik, Aleksandra; Merecz-Kot, Dorota; Andysz, Aleksandra

    2015-01-01

    Managers influence the way organization works as well as the functioning of subordinates - in the context of their work life but non-professional functioning as well e.g., attitude towards work-life balance or taking care of health. We focused on the superior-subordinate relation, referring to social power bases theory by Raven. We identified the reasons why subordinates decide to follow their superiors' orders and determined specific styles of compliance with superiors' will. Understanding why employees listen to their superiors may be valuable in the context of supporting healthy organizational climate and atmosphere of co-operation or communicating values - for example, as regards taking care of own health. We discussed the results referring to the issue of influencing employees in the context of their health behavior. The research involved 100 Polish employees, aged 28 years old on average, who filled in the Interpersonal Power Inventory by Raven et al. for subordinates in a Polish adaptation by Zaleski. The questionnaire includes 11 subscales referring to power bases. Based on the cluster analysis results, we recognized people who complied because of: all kinds of power bases (typical for 46% of the respondents); the respect for superiors' professionalism (34%); and formal/objective reasons (20%). Employees differ in terms of their styles of compliance. Their motives to comply with superiors' instructions constitute compilations of power bases. The superiors' awareness of the reasons why their employees decide to follow orders is necessary for successful management. It may motivate employees to work but also to take care of their own health. This work is available in Open Access model and licensed under a CC BY-NC 3.0 PL license.

  7. The barrier effect of conflict with superiors in the relationship between employee empowerment and organizational commitment

    NARCIS (Netherlands)

    Janssen, O.

    The author proposes the idea that conflict with superiors has a barrier effect in the positive relationship between employee empowerment and organizational commitment. Superiors with higher authority rankings set and pursue organizational goals and values to which employees with lower authority

  8. Superior Educational Attainment and Strategies of Land Inheritance in Post-Famine Ireland: A Case Study

    Science.gov (United States)

    Hillas, Sarah

    2018-01-01

    To date no major study exists on the impact of the Great Famine on patterns of participation in superior education in Ireland, or on the impact of superior education on the life courses and inheritance potential of boys from small farming families. This paper provides a historical analysis and interpretation of patterns of participation in…

  9. Surgical Treatment of A Dissecting Aneurysm of the Superior Cerebellar Artery: Case Report

    Directory of Open Access Journals (Sweden)

    Stefanescu Florin

    2014-10-01

    Full Text Available Dissecting aneurysm located in the peripheral region of the superior cerebellar artery is very rare. There is little experience regarding their surgical or endovascular treatment. We present the case of a peripheral dissecting superior cerebellar artery aneurysm treated by surgical clipping.

  10. Widening of mediastinum with persistent left superior Vena cava - CT diagnosis

    International Nuclear Information System (INIS)

    Neuwirth, J.; Kolar, J.

    1992-01-01

    Described in this paper are radiographic findings recorded from a case of persistent left superior vena cava which grew manifest by widening of the left contour of the upper mediastinal region. Contrast-enhanced computed tomography (CT) was undertaken to clear up suspicion of mediastinal tumour and revealed double superior vena cava. The diagnosis was then confirmed by digital subtraction venography. (orig.) [de

  11. Frequency of the superior rectus muscle overaction/contracture syndrome in unilateral fourth nerve palsy.

    Science.gov (United States)

    Molinari, Andrea; Ugrin, Maria Cristina

    2009-12-01

    Superior oblique palsy is accompanied in most cases by overaction of the muscle's ipsilateral antagonist, the inferior oblique muscle. Overaction and contracture of the ipsilateral superior rectus muscle in patients with unilateral fourth (trochlear) nerve palsy is seldom discussed in the literature. The purpose of this study is to evaluate the frequency of superior rectus muscle overaction/contracture syndrome in patients with unilateral trochlear nerve palsy. The records of 198 patients with unilateral trochlear nerve palsy examined by the authors between July 1987 and July 2008 were reviewed retrospectively. All patients underwent complete eye examination with measurement of the deviation in the 9 positions of gaze and with the head tilted to both sides in all cooperative patients. Selection criteria for superior rectus muscle overaction/contracture syndrome in these patients were as follows: vertical deviation of 15(Delta) or larger in primary position, equal or larger hypertropia with the ipsilateral forced tilt test than with the eyes looking straight ahead, more than 5(Delta) hypertropia of the affected eye in horizontal gaze to the same side, hypertropia in all upgazes, and overaction of the contralateral superior oblique muscle. Of 198 patients, 33 (16.6%) met the selection criteria for superior rectus muscle overaction/contracture syndrome. Superior rectus muscle overaction/contracture syndrome frequently occurs in unilateral superior oblique palsy.

  12. 77 FR 35857 - Safety Zone, Fireworks Display, Lake Superior; Duluth, MN

    Science.gov (United States)

    2012-06-15

    ... 1625-AA00 Safety Zone, Fireworks Display, Lake Superior; Duluth, MN AGENCY: Coast Guard, DHS. ACTION... of Lake Superior during the Duluth Fourth Fest fireworks display. This temporary safety zone is necessary to protect spectators and vessels from the hazards associated with fireworks displays. DATES: This...

  13. Assessment of the effects of superior canal dehiscence location and size on intracochlear sound pressures

    NARCIS (Netherlands)

    Niesten, Marlien E F; Stieger, Christof; Lee, Daniel J; Merchant, Julie P; Grolman, Wilko; Rosowski, John J; Nakajima, Hideko Heidi

    2015-01-01

    Superior canal dehiscence (SCD) is a defect in the bony covering of the superior semicircular canal. Patients with SCD present with a wide range of symptoms, including hearing loss, yet it is unknown whether hearing is affected by parameters such as the location of the SCD. Our previous human

  14. Cine computed tomography for diagnosis of superior vena cava obstruction following the mustard operation

    International Nuclear Information System (INIS)

    Matherne, G.P.; Atkins, D.L.; Frey, E.E.; Smith, W.L.

    1987-01-01

    Superior vena caval obstruction is a well described complication following Mustard's repair for transposition of the great arteries. We report a case of a 6-year-old child with superior vena cava obstruction correctly diagnosed by Cine-CT. The advantages of imaging with Cine-CT for this complication are discussed. (orig.)

  15. CT evaluation of decrease in attenuation in the superior segment of the left lower lobe

    International Nuclear Information System (INIS)

    Inaoka, Tsutomu; Takahashi, Koji; Ono, Hidetoshi

    2003-01-01

    We occasionally see decrease in attenuation in the superior segment of the left lower lobe on normal chest CT and notice that this finding could be seen in elder population. Then, we assessed the frequency, age distribution and cause of decrease in attenuation in the superior segment of the left lower lobe. Chest CT scans of 246 patients without lung or cardiac disorders were retrospectively reviewed. Segmental low attenuation area in the superior segment of the left lower lobe was identified in 12 patients (4.9%), which were 65-92 years old with mean age of 77.2 years old. In all of them, chest CT demonstrated that the tortuous descending aorta compressed directly the superior segmental bronchus of the left lower lobe. It is concluded that the lateral tortuousity of the descending aorta could cause decrease in attenuation in the superior segment of the left lower lobe. (author)

  16. Visual search for emotional expressions: Effect of stimulus set on anger and happiness superiority.

    Science.gov (United States)

    Savage, Ruth A; Becker, Stefanie I; Lipp, Ottmar V

    2016-01-01

    Prior reports of preferential detection of emotional expressions in visual search have yielded inconsistent results, even for face stimuli that avoid obvious expression-related perceptual confounds. The current study investigated inconsistent reports of anger and happiness superiority effects using face stimuli drawn from the same database. Experiment 1 excluded procedural differences as a potential factor, replicating a happiness superiority effect in a procedure that previously yielded an anger superiority effect. Experiments 2a and 2b confirmed that image colour or poser gender did not account for prior inconsistent findings. Experiments 3a and 3b identified stimulus set as the critical variable, revealing happiness or anger superiority effects for two partially overlapping sets of face stimuli. The current results highlight the critical role of stimulus selection for the observation of happiness or anger superiority effects in visual search even for face stimuli that avoid obvious expression related perceptual confounds and are drawn from a single database.

  17. Hacia la construccion de un sistema nacional de rendicion de cuentas y fiscalizacion superior en Mexico

    Directory of Open Access Journals (Sweden)

    Manjarrez, J.

    2006-01-01

    Full Text Available Accountability and superior auditing of public resources are basic conditions of modern democracies and part of the state reform. To reinforce accountability and superior audit institutions it is proposed to integrate a National System of Accountability and Superior Auditing. This System is meant to enhance the effectiveness of the internal and external controls and to promote the efficiency, efficacy, ethics, legality and austerity in the use of public resources. It is necessary to implement strategies to assure the superior audit institutions, at the Federal and state level, with financial independence and administrative autonomy, training and civil service granted in the Political Constitution. Part of the System will be the National Institute of Accountability and Superior Audit. This Institute will promote training, the best audit and evaluation techniques and the accountability and austerity culture. Finally, the Citizen Accountability Consultative Council, will provide a forum of discussion, opinion and free expression regarding accountability and the correct use of public resources.

  18. Prosopographic notes on roman mining in Moesia superior: The families of wealthy immigrants in the mining districts of Moesia superior

    Directory of Open Access Journals (Sweden)

    Dušanić Slobodan

    2006-01-01

    Full Text Available The author analyzes epigraphic evidence (fresh or based on documents the reading and/or interpretation of which has been revised in sections I-V to show that Roman mining in Moesia Superior, under the Principate, was largely based on private - frequently senatorial - financial investment. I An unpublished inscription (IInd cent.? from the Kosmaj argentariae discloses two Publii Fundanii, obviously members of the same family which was to produce P. Fundanius Eutyches, a colonus of the near-by Rudnik mines early in Septimius Severus' reign (IMS I 168. It is perhaps no simple coincidence that, long before, a P. Fundanius Hospes was active in the ferrariae of Noricum (CIL III 4915 a, Magdalensberg; as is well known, the involvement of wealthy Romans in the mining business tended to be hereditary. II The set of Dardanian lead-ingots found at the wreck site of Caesarea Palaestinae registers interesting stamps (Ann. ép. 1999, 1683; Domitianic. Their testimony can be understood, on a number of points, more completely than has been done by previous editors (I shall discuss the ingots' epigraphic problems in a separate article. Here, let us note that the stamp (d P.T.R., is best read P(ublius T(arius R(ufus (the genitive construction being possible, too. Like several other families from Liburnia and Nedinum itself (e.g. the Quinti Gnorii, the Tarii Rufi (there seems to be independent evidence that they employed the praenomen Publius [CIL III 2877] among other praenomina will have invested their money in the mining of Illyricum/Upper Moesia. This state of affairs probably went back to L. Tarius Rufus, cos. 16 BC. III As briefly noted by A. Evans (and more or less forgotten by later scholars, there was a Roman mining region in northwest Dardania (Mokra Gora - Suva Planina, which has left traces in the toponymy (the eloquent Serbian place-name "Rudnik", archaeological material (including "traces of the ancient workings ", and inscriptions (the mining

  19. Persistencia de la vena cava superior izquierda: Diagnóstico e importancia prenatal Persistency of the left superior caval vein: Diagnosis and its prenatal importance

    Directory of Open Access Journals (Sweden)

    Juan F Jaramillo

    2010-04-01

    Full Text Available Durante un ultrasonido obstétrico de rutina se deben realizar ciertos planos del corazón en los cuales no es complejo identificar un grupo de anomalías como la persistencia de la vena cava superior izquierda. Cuando se identifica una vena cava superior izquierda aislada, sin otras anomalías del corazón fetal, no existe ninguna repercusión perinatal. Su importancia radica en que un grupo considerable de estos casos se acompaña de cardiopatías congénitas y anomalías anatómicas y cromosómicas. En este artículo se describen nueve casos de vena cava superior izquierda persistente, al igual que las anomalías del corazón asociadas, como también las alteraciones extracardiacas encontradas.Certain heart fetal planes must be realized during a routine obstetric ultrasound in order to identify a group of anomalies such as the persistency of the left superior caval vein. When an isolated left superior venal vein is identified without any other anomaly of the fetal heart, it does not have any perinatal repercussion. Its importance lies in the fact that a considerable number of these cases are associated with a high incidence of congenital heart diseases and anatomic and chromosomal abnormalities. This article reports nine cases of persistency of the left superior caval vein as well as the associated heart abnormalities and the extra-cardiac alterations found.

  20. Generando vinculación académica en el IPN entre el nivel medio superior y superior en unidades de aprendizaje de básicas

    OpenAIRE

    Gil Balderrama, Sara Beatríz; Pérez Bussó, Carlos Eduardo

    2016-01-01

    El Instituto Politécnico Nacional (IPN) en el estado de Guanajuato presenta, como muchas instituciones educativas un enorme filtro de abandono y deserción en los primeros semestres del nivel superior. En este trabajo, presentamos una experiencia docente en el CECyT 174, una escuela del nivel medio superior del I.P.N. en la ciudad de León, Guanajuato, México. Este reporte es el trabajo desarrollado por los autores intentando que la labor académica contribuya a reducir la brecha existente entre...

  1. Histological evaluation of levator palpebralis superior muscle in patients with congenital blepharoptosis

    Directory of Open Access Journals (Sweden)

    Sevda Söker

    2011-03-01

    Full Text Available The aim of this study was to examine levator palpebralis superior muscle histologically in patients with congenital blepharoptosis and to investigate the relationship between these findings and age, sex and degree of blefaroptosis in this patient group.Materials and methods: Levator muscle of 13 patients with congenital ptosis, who had applied to Dicle University Medical Faculty Ophthalmology Clinic and had undergone levator palpebralis superior muscle resection between january 2009-january 2010, has been examined histopathologically in Histology and Embriology Deparment. During preoperative period, ptosis amount, levator function (LF, tear functions, Bell’s phenomenon and jaw-winking phenomenon were evaluated. All patients underwent resection of levator palpebralis superior muscle. Received postoperative levator muscle was examined by light microscopy.Results: The average age of 9 (69.2% male and 4 (30.8% female cases were 10.61 ± 4.77 (4- 19 years. In histological examination, the quality and quantity of the levator muscle fibrils have been assessed. There was no relationship detected between histological features of levator palpebralis superior muscle and patient’s age and gender (p>0.05. Patients with weak levator palpebralis superior muscle were detected to have fatty degeneration histologically. The higher the levator palpebralis superior muscle function revealed decreased fatty degeneration and increased skeletal muscle fibrils.Conclusion: More ultrastructural studies in larger populations are needed to support the relationship between structure and function of levator palpebralis superior muscle in patients with congenital blepharoptosis.

  2. Persistency of the left superior caval vein. Diagnosis and its prenatal importance

    International Nuclear Information System (INIS)

    Jaramillo, Juan F; Estrada Perea, Mercy H; Muriel, Yina Y

    2010-01-01

    Certain heart fetal planes must be realized during a routine obstetric ultrasound in order to identify a group of anomalies such as the persistency of the left superior caval vein. When an isolated left superior venal vein is identified without any other anomaly of the fetal heart, it does not have any perinatal repercussion. Its importance lies in the fact that a considerable number of these cases are associated with a high incidence of congenital heart diseases and anatomic and chromosomal abnormalities. This article reports nine cases of persistency of the left superior caval vein as well as the associated heart abnormalities and the extra-cardiac alterations found.

  3. Subjective qualities of memories associated with the picture superiority effect in schizophrenia.

    Science.gov (United States)

    Huron, Caroline; Danion, Jean-Marie; Rizzo, Lydia; Killofer, Valérie; Damiens, Annabelle

    2003-02-01

    Patients with schizophrenia (n = 24) matched with 24 normal subjects were presented with both words and pictures. On a recognition memory task, they were asked to give remember, know, or guess responses to items that were recognized on the basis of conscious recollection, familiarity, or guessing, respectively. Compared with normal subjects, patients exhibited a lower picture superiority effect selectively related to remember responses. Unlike normal subjects, they did not exhibit any word superiority effect in relation to guess responses; this explains why the overall picture superiority effect appeared to be intact. These results emphasize the need to take into account the subjective states of awareness when analyzing memory impairments in schizophrenia.

  4. Globalització i internacionalització en l'ensenyament superior

    OpenAIRE

    de Wit, J.W.M (Hans)

    2011-01-01

    La internacionalització és un fenomen cada cop més important i generalitzat en l'ensenyament superior en els àmbits institucional, nacional i internacional. La globalització de les nostres economies i societats ha tingut un impacte en l'ensenyament superior dels últims vint-i-cinc anys, i el mateix ensenyament superior s'ha convertit en un actor en l'economia de coneixement global, en la recerca i en altres àrees que impliquen aspectes com la c...

  5. Comportamiento de las ptosis palpebral en el servicio de oculoplastia: Año 2001 Behavior of palpebral ptosis in the oculoplasty service: Year 2001

    Directory of Open Access Journals (Sweden)

    Marta Herrera Soto

    2002-12-01

    Full Text Available Se estudiaron 93 pacientes que acudieron a consulta en el año 2001 y se les realizó examen oftalmológico completo y específico de la ptosis. El 40,86 % se encontraba entre los 15 años o menos. Etiológicamente la ptosis aponeurótica ocupó el 41,8 % seguida de las miogénicas con el 41,1 %. En el grupo de 15 años o menos las ptosis miogénicas representaron el 82,4 % y en mayores de 61 años las aponeuróticas ocuparon el 85,4 %. La ptosis severa cursó con función nula del elevador en el 73,46 %, mientras que la función excelente prevaleció en las leves y moderadas con 56,2 y 31,25 % respectivamente. El 77,9 % no presentaron complicaciones quirúrgicas. Predominaron las edades de 15 o menos años. Dentro de las ptosis aponeuróticas prevalecieron las posquirúrgicas y en las miogénicas, la congénita simple. La función del elevador fue excelente en las ptosis leves y nula en las severas. Predominó la ausencia de complicaciones93 patients that visited our office during the year 2001 and underwent complete and specific ophthalmological examination for ptosis.were studied. 40.86 % were 15 or less. Ethiologically, the aponeurotic ptosis accounted for 41.8 %, followed by the myogenic with 41.1 %. In the group aged 15 or less the myogenic ptosis represented 82.4 % and among those over 61 the aponeurotic accounted for 85.4 %. Severe ptosis had a null function of the elevator in 73.46 %, whereas the excellent function prevailed in the mild and moderate with 56.2 and 31.25 %, respectively. 77.9 % had no surgical complications. It was observed a prevalence among patients aged 15 or under. The postsurgical aponeurotic ptosis predominated within the aponeurotic ptosis, whereas the simple congenital ptosis prevailed among the myogenic. The function of the elevator was excellent in the mild ptosis and nil in the severe. There were no complications

  6. Ligneous conjunctivitis in a patient of juvenile colloid milia: A rare association

    Directory of Open Access Journals (Sweden)

    Shubhangi Sudhir Bhave

    2015-01-01

    Full Text Available We present to you, case of a 10-year-old female with h/o redness, watering since 8 months. Her vision was 20/30 in right eye and 20/70 in left eye. Conjunctiva had plenty of purulent discharge and palpebral conjunctiva was studded with membranous lesions. She was found to have multiple hyperpigmented papulopustular lesions over face, palms and legs. She was started with topical moxifloxacin and lubricating drops. Patient was followed-up after 15 days. At that time her conjunctiva had formation of a woody pseudomembrane. Excision of the lesions and skin biopsy was done and sent for hislopathological examination. Findings of histopathological examination were suggestive of ligneous conjunctivitis and juvenile colloid milia. We have started this patient with long-term cyclosporine drops and tear supplements. In next visit, the membrane was resolved. Hence, we continued with the same treatment, but again the woody membrane recurred.

  7. The picture superiority effect in patients with Alzheimer's disease and mild cognitive impairment.

    Science.gov (United States)

    Ally, Brandon A; Gold, Carl A; Budson, Andrew E

    2009-01-01

    The fact that pictures are better remembered than words has been reported in the literature for over 30 years. While this picture superiority effect has been consistently found in healthy young and older adults, no study has directly evaluated the presence of the effect in patients with Alzheimer's disease (AD) or mild cognitive impairment (MCI). Clinical observations have indicated that pictures enhance memory in these patients, suggesting that the picture superiority effect may be intact. However, several studies have reported visual processing impairments in AD and MCI patients which might diminish the picture superiority effect. Using a recognition memory paradigm, we tested memory for pictures versus words in these patients. The results showed that the picture superiority effect is intact, and that these patients showed a similar benefit to healthy controls from studying pictures compared to words. The findings are discussed in terms of visual processing and possible clinical importance.

  8. A Comparison of Surgical Treatments for Superior Semicircular Canal Dehiscence: A Systematic Review

    NARCIS (Netherlands)

    Ziylan, F.; Kinaci, A.; Beynon, A.J.; Kunst, H.P.M.

    2017-01-01

    OBJECTIVE: We investigate the postoperative subjective and objective outcomes of different surgical treatments for superior semicircular canal dehiscence (SSCD): vestibular signs, auditory signs, vestibular evoked myogenic potential test, pure tone audiogram, speech audiogram, or

  9. Information Management: Is the U.S. Army prepared for Information Superiority?

    National Research Council Canada - National Science Library

    Norton, Timothy

    2003-01-01

    .... Army doctrine in this area does not support it. Specifically, the topic of information management, one of the fundamentals in information superiority, is lacking in the clarity and depth required to meet this lofty goal...

  10. The picture superiority effect in patients with Alzheimer’s disease and mild cognitive impairment

    Science.gov (United States)

    Ally, Brandon A.; Gold, Carl A.; Budson, Andrew E.

    2009-01-01

    The fact that pictures are better remembered than words has been reported in the literature for over 30 years. While this picture superiority effect has been consistently found in healthy young and older adults, no study has directly evaluated the presence of the effect in patients with Alzheimer’s disease (AD) or mild cognitive impairment (MCI). Clinical observations have indicated that pictures enhance memory in these patients, suggesting that the picture superiority effect may be intact. However, several studies have reported visual processing impairments in AD and MCI patients which might diminish the picture superiority effect. Using a recognition memory paradigm, we tested memory for pictures versus words in these patients. The results showed that the picture superiority effect is intact, and that these patients showed a similar benefit to healthy controls from studying pictures compared to words. The findings are discussed in terms of visual processing and possible clinical importance. PMID:18992266

  11. Picture superiority in free recall: the effects of normal aging and primary degenerative dementia.

    Science.gov (United States)

    Rissenberg, M; Glanzer, M

    1986-01-01

    A key factor in the decline of memory with age may be a breakdown of communication in the information network involved in memory and cognitive processing. A special case of this communication is assumed to underlie the picture superiority effect in recall. From this hypothesis it follows that the picture superiority effect should lessen with age. In Experiment 1, three groups of adults (young, old normal, and old memory-impaired) were tested in free recall of pictures and word lists. As predicted, the picture superiority effect declined with age. Experiment 2 replicated these findings and showed, moreover, that the picture superiority effect can be reestablished in normal old adults by instructing them to verbalize overtly during item presentation.

  12. Information Superiority and Game Theory: The Value of Varying Levels of Information

    National Research Council Canada - National Science Library

    McIntosh, Gary

    2002-01-01

    .... This thesis examines how various levels of information and information superiority affect strategy choices and decision-making in determining the payoff value for opposing forces in a classic zero-sum two-sided contest...

  13. The high-riding superior aortic recess of the pericardium: MRI visualization in a child

    International Nuclear Information System (INIS)

    Cohen, Mervyn; Johnson, Tiffanie; Hoyer, Mark

    2005-01-01

    We report a 4-year-old child with a high-riding superior aortic recess of the pericardium, initially misdiagnosed as a possible vascular malformation. The anatomy of the pericardial recesses is reviewed. (orig.)

  14. Mechanism of the superior mechanical strength of nanometer-sized metal single crystals revealed

    KAUST Repository

    Afify, N. D.

    2013-10-01

    Clear understanding of the superior mechanical strength of nanometer-sized metal single crystals is required to derive advanced mechanical components retaining such superiority. Although high quality studies have been reported on nano-crystalline metals, the superiority of small single crystals has neither been fundamentally explained nor quantified to this date. Here we present a molecular dynamics study of aluminum single crystals in the size range from 4.1 nm to 40.5 nm. We show that the ultimate mechanical strength deteriorates exponentially as the single crystal size increases. The small crystals superiority is explained by their ability to continuously form vacancies and to recover them. © 2013 Published by Elsevier B.V.

  15. Distribution and ecology of the superior mushrooms of the Aulnaie of ...

    African Journals Online (AJOL)

    use

    days, as well as for the mycological inventories concerning the peaty ... it remains sometimes flooded even in summer period, especially when late rains fall in ... of minimal area of sampling for the superior mushrooms (between 500, 1000 and.

  16. A new Nitinol stent for use in superior vena cava syndrome

    DEFF Research Database (Denmark)

    Andersen, Poul Erik; Midtgaard, Annette; Brenøe, Anne-Sofie

    2015-01-01

    AIM: The aim of the study was to assess the early clinical experience with the Zilver Vena stent in treating patients with malignant superior vena cava syndrome. METHODS: Demographic, procedural, and follow-up data of 12 patients (seven women; mean age 69 years) treated for superior vena cava...... syndrome with in all 21 Zilver Vena stents between March 2012 and October 2013 were retrospectively reviewed. All cavographies and contrast enhanced CT related to the treatment and during follow-up were evaluated and the patients had clinical follow-up until dead. They were all in terminal state...... at the time of stent deployment. RESULTS: All patients had superior vena cava obstruction and clinical superior vena cava syndrome caused by malignant expansive mediastinal disease (eight patients non-small cell lung cancer and four small cell lung cancer). The technical success with deployment of the stents...

  17. Superior mesenteric artery syndrome following initiation of cisplatin-containing chemotherapy: a case report

    Directory of Open Access Journals (Sweden)

    Ushiki Atsuhito

    2012-01-01

    Full Text Available Abstract Introduction Superior mesenteric artery syndrome is a rare cause of upper intestinal obstruction resulting from compression of the duodenum by the superior mesenteric artery and abdominal aorta. Case presentation We describe a case of superior mesenteric artery syndrome in a 61-year-old Japanese man with non-small cell lung cancer who had been treated with cisplatin-containing chemotherapy and had lost 7 kg in weight. The diagnosis was confirmed by the typical findings of abdominal computed tomography showing distended stomach resulting from compression of the third portion of the duodenum and reduction of an aortomesenteric distance and aortomesenteric angle. Conclusions This case highlights the importance of considering the possibility of superior mesenteric artery syndrome in patients treated with chemotherapy, especially those presenting with a low body mass index and showing weight loss during chemotherapy.

  18. The picture superiority effect in patients with Alzheimer’s disease and mild cognitive impairment

    OpenAIRE

    Ally, Brandon A.; Gold, Carl A.; Budson, Andrew E.

    2008-01-01

    The fact that pictures are better remembered than words has been reported in the literature for over 30 years. While this picture superiority effect has been consistently found in healthy young and older adults, no study has directly evaluated the presence of the effect in patients with Alzheimer’s disease (AD) or mild cognitive impairment (MCI). Clinical observations have indicated that pictures enhance memory in these patients, suggesting that the picture superiority effect may be intact. H...

  19. Don't words come easy? A psychophysical exploration of word superiority

    DEFF Research Database (Denmark)

    Starrfelt, Randi; Petersen, Anders; Vangkilde, Signe Allerup

    2013-01-01

    Words are made of letters, and yet sometimes it is easier to identify a word than a single letter. This word superiority effect (WSE) has been observed when written stimuli are presented very briefly or degraded by visual noise. We compare performance with letters and words in three experiments, ...... and visual short term memory capacity. So, even if single words come easy, there is a limit to the word superiority effect....

  20. Marketing digital para el posicionamiento de los institutos superiores tecnológicos de Lima Metropolitana

    OpenAIRE

    Otsuka Chong, Yoko

    2015-01-01

    El objetivo principal de la investigación fue determinar si el marketing digital se relaciona con el posicionamiento de los Institutos Superiores Tecnológicos de Lima Metropolitana. La variable independiente es el marketing digital (dimensiones: Comunicación, Promoción, Publicidad, Comercialización); la variable dependiente es el posicionamiento (dimensiones: Imagen, Productos, Servicios, Personal). La población fue conformada por los alumnos de los Institutos Superiores Tecnológicos de...

  1. Superior Thyroid Artery Lesion After US-Guided Chemical Parathyroidectomy: Angiographic Diagnosis and Treatment by Embolization

    International Nuclear Information System (INIS)

    Perona, Franco; Barile, Antonio; Oliveri, Michele; Quadri, Piergiorgio; Ferro, Carlo

    1999-01-01

    A 71-year-old woman presented with a life-threatening thyroid hemorrhage after US-guided chemical parathyroidectomy. The diagnosis was made by angiography followed by immediate embolization of a pseudoaneurysm of the left superior thyroid artery. Embolization controlled the hemorrhage, obviating the need for surgery. The patient made a full recovery with no evidence of further hemorrhage. Pseudoaneurysm of the superior thyroid artery is a rare cause of hemorrhage and percutaneous embolization is an effective method of treatment

  2. USAF Warrior Studies: Air Superiority in World War 2 and Korea,

    Science.gov (United States)

    1983-01-01

    cal aiMr. and lO\\\\ dild air s.uperiority. lit in. in the latle 1940s!? Did our- emphasis onl str~ateiC’c and nuclear air power do us harm .’ Did It...cmim l t~ ilc ItI-, t.- tha \\i,’IC t I I.t. 1 4 1, h AIR SUPERIORITY to as operational masturbation . I have always felt the B-52s were to a large

  3. Superior Vena Cava Syndrome in a Patient with Small-Cell Lung Cancer: A Case Report

    OpenAIRE

    Christina Brzezniak; Bryan Oronsky; Corey A. Carter; Bennett Thilagar; Scott Caroen; Karen Zeman

    2017-01-01

    Superior vena cava (SVC) syndrome, a potential oncologic emergency, is closely associated with malignancy and right-sided lung cancer in particular. A case of SVC syndrome presenting with facial swelling, neck distension, and enlarged veins of the upper chest, which developed over a period of 5 weeks in a 46-year-old patient on a clinical trial with small-cell lung cancer, is reported. Computed tomography scan of the chest revealed slight enlargement of a superior conglomerate mediastinal lym...

  4. Superior accuracy of model-based radiostereometric analysis for measurement of polyethylene wear

    DEFF Research Database (Denmark)

    Stilling, M; Kold, S; de Raedt, S

    2012-01-01

    The accuracy and precision of two new methods of model-based radiostereometric analysis (RSA) were hypothesised to be superior to a plain radiograph method in the assessment of polyethylene (PE) wear.......The accuracy and precision of two new methods of model-based radiostereometric analysis (RSA) were hypothesised to be superior to a plain radiograph method in the assessment of polyethylene (PE) wear....

  5. Aprendizagem no ensino superior: relações com a prática docente

    OpenAIRE

    Borralho, António; Fialho, Isabel; Cid, Marília

    2012-01-01

    Esta apresentação enquadra-se no Projeto de Investigação “Avaliação, Ensino e Aprendizagens no Ensino Superior em Portugal e no Brasil: Realidades e Perspetivas” e tem como finalidade abordar e analisar questões relativas à aprendizagem dos estudantes e à prática docente no ensino superior, tendo em conta os debates e a investigação em curso nesta área.

  6. Superior sagittal sinus thrombosis: a rare complication in a child with nephrotic syndrome

    International Nuclear Information System (INIS)

    Pirogovsky, A.; Adi, M.; Barzilai, N.; Dagan, A.; Sinai, L.; Sthoeger, D.; Tabachnik, E.

    2001-01-01

    A 2-year-old boy with new-onset nephrotic syndrome developed recurrent vomiting, apathy and papilloedema. Superior sagittal sinus thrombosis was diagnosed on cranial CT and MRI. He gradually recovered after treatment with heparin, fresh frozen plasma and warfarin with complete resolution of the thrombosis after 1 month. Superior sagittal sinus thrombosis is an extremely rare complication of nephrotic syndrome in children. Early diagnosis is essential for institution of anticoagulation therapy and a successful outcome. (orig.)

  7. Superior sagittal sinus thrombosis: a rare complication in a child with nephrotic syndrome

    Energy Technology Data Exchange (ETDEWEB)

    Pirogovsky, A.; Adi, M.; Barzilai, N. [Dept. of Radiology, Kaplan Medical Center, Rehovot (Israel); Dagan, A.; Sinai, L.; Sthoeger, D. [Div. of Paediatrics, Kaplan Medical Center, Rehovot (Israel); Tabachnik, E. [Div. of Paediatrics, Kaplan Medical Center, Rehovot (Israel); Paediatric ICU, Kaplan Hospital, Rehovot (Israel)

    2001-10-01

    A 2-year-old boy with new-onset nephrotic syndrome developed recurrent vomiting, apathy and papilloedema. Superior sagittal sinus thrombosis was diagnosed on cranial CT and MRI. He gradually recovered after treatment with heparin, fresh frozen plasma and warfarin with complete resolution of the thrombosis after 1 month. Superior sagittal sinus thrombosis is an extremely rare complication of nephrotic syndrome in children. Early diagnosis is essential for institution of anticoagulation therapy and a successful outcome. (orig.)

  8. Spatial vision is superior in musicians when memory plays a role.

    Science.gov (United States)

    Weiss, Atalia H; Biron, Tali; Lieder, Itay; Granot, Roni Y; Ahissar, Merav

    2014-08-21

    Musicians' perceptual advantage in the acoustic domain is well established. Recent studies show that musicians' verbal working memory is also superior. Additionally, some studies report that musicians' visuospatial skills are enhanced although others failed to find this enhancement. We now examined whether musicians' spatial vision is superior, and if so, whether this superiority reflects refined visual skills or a general superiority of working memory. We examined spatial frequency discrimination among musicians and nonmusician university students using two presentation conditions: simultaneous (spatial forced choice) and sequential (temporal forced choice). Musicians' performance was similar to that of nonmusicians in the simultaneous condition. However, their performance in the sequential condition was superior, suggesting an advantage only when stimuli need to be retained, i.e., working memory. Moreover, the two groups showed a different pattern of correlations: Musicians' visual thresholds were correlated, and neither was correlated with their verbal memory. By contrast, among nonmusicians, the visual thresholds were not correlated, but sequential thresholds were correlated with verbal memory scores, suggesting that a general working memory component limits their performance in this condition. We propose that musicians' superiority in spatial frequency discrimination reflects an advantage in a domain-general aspect of working memory rather than a general enhancement in spatial-visual skills. © 2014 ARVO.

  9. Sedimentation rates and depositional processes in Lake Superior from 210Pb geochronology

    International Nuclear Information System (INIS)

    Evans, J.E.; Johnson, T.C.; Alexander, E.C. Jr.; Lively, R.S.; Eisenreich, S.J.

    1981-01-01

    Sedimentation rates range from 0.01 to 0.32 cm/yr in 17 sediment box cores from Lake Superior, as determined by 210 Pb geochronology. Shoreline erosion and resuspension of nearshore sediments causes moderate to high (0.05-0.11 cm/yr) sedimentation rates in the western arm of Lake Superior. Sedimentation rates are very high (> 0.15 cm/yr) in marginal bays adjoining Lake Superior; and moderate to very high (0.07-0.19 cm/yr) in open lake regions adjacent to marginal bays. Resuspension of nearshore and shoal top sediments in southern and southeastern Lake Superior by storms is responsible for depositional anomalies in 210 Pb profiles corresponding to 1905, 1916-1918, and 1940 storms. Sedimentation rates are very low (0.01-0.03 cm/yr) in the central basins due to isolation from sediment sources. These data indicate that sedimentation rates and processes vary significantly in different regions of Lake Superior. The sedimentation rates provided by this study, in conjunction with previously-reported sedimentation rates, yield a better understanding of the Lake Superior depositional environment

  10. Age-related audiovisual interactions in the superior colliculus of the rat.

    Science.gov (United States)

    Costa, M; Piché, M; Lepore, F; Guillemot, J-P

    2016-04-21

    It is well established that multisensory integration is a functional characteristic of the superior colliculus that disambiguates external stimuli and therefore reduces the reaction times toward simple audiovisual targets in space. However, in a condition where a complex audiovisual stimulus is used, such as the optical flow in the presence of modulated audio signals, little is known about the processing of the multisensory integration in the superior colliculus. Furthermore, since visual and auditory deficits constitute hallmark signs during aging, we sought to gain some insight on whether audiovisual processes in the superior colliculus are altered with age. Extracellular single-unit recordings were conducted in the superior colliculus of anesthetized Sprague-Dawley adult (10-12 months) and aged (21-22 months) rats. Looming circular concentric sinusoidal (CCS) gratings were presented alone and in the presence of sinusoidally amplitude modulated white noise. In both groups of rats, two different audiovisual response interactions were encountered in the spatial domain: superadditive, and suppressive. In contrast, additive audiovisual interactions were found only in adult rats. Hence, superior colliculus audiovisual interactions were more numerous in adult rats (38%) than in aged rats (8%). These results suggest that intersensory interactions in the superior colliculus play an essential role in space processing toward audiovisual moving objects during self-motion. Moreover, aging has a deleterious effect on complex audiovisual interactions. Copyright © 2016 IBRO. Published by Elsevier Ltd. All rights reserved.

  11. File list: NoD.Neu.50.AllAg.Superior_Cervical_Ganglion [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  19. Enlarged right superior temporal gyrus in children and adolescents with autism.

    Science.gov (United States)

    Jou, Roger J; Minshew, Nancy J; Keshavan, Matcheri S; Vitale, Matthew P; Hardan, Antonio Y

    2010-11-11

    The superior temporal gyrus has been implicated in language processing and social perception. Therefore, anatomical abnormalities of this structure may underlie some of the deficits observed in autism, a severe neurodevelopmental disorder characterized by impairments in social interaction and communication. In this study, volumes of the left and right superior temporal gyri were measured using magnetic resonance imaging obtained from 18 boys with high-functioning autism (mean age=13.5±3.4years; full-scale IQ=103.6±13.4) and 19 healthy controls (mean age=13.7±3.0years; full-scale IQ=103.9±10.5), group-matched on age, gender, and handedness. When compared to the control group, right superior temporal gyral volumes was significantly increased in the autism group after controlling for age and total brain volume. There was no significant difference in the volume of the left superior temporal gyrus. Post-hoc analysis revealed a significant increase of the right posterior superior temporal gyral volume in the autism group, before and after controlling for age and total brain volume. Examination of the symmetry index for the superior temporal gyral volumes did not yield statistically significant between-group differences. Findings from this preliminary investigation suggest the existence of volumetric alterations in the right superior temporal gyrus in children and adolescents with autism, providing support for a neuroanatomical basis of the social perceptual deficits characterizing this severe neurodevelopmental disorder. Copyright © 2010 Elsevier B.V. All rights reserved.

  20. Reproduction of superior sagittal sinus animal model by bypass transplantation of biomaterial graft

    Directory of Open Access Journals (Sweden)

    Qing-yong LUO

    2011-03-01

    Full Text Available Objective To establish the beagles model of superior sagittal sinus bypass graft,and explore the feasibility of reconstruction of superior sagittal sinus with biomaterials using this model.Methods Eight adult male beagles(weight: 12.5-22.0kg were involved in the present study.The superior sagittal sinus was exposed and blocked via bone window,and then anastomosed side-to-end to the biomaterial graft under the dedicated microscope of neurosurgery surgery,expectant treatment such as anti-inflammatory was given for the animals.The digital subtraction venography(DSV and color Doppler flow imaging(CDFI of superior sagittal sinus were performed in 1,2,4 and 8 weeks after the operation.Eight weeks after the operation,all the animals were sacrificed and the material graft was examined histologically.Results The DSV and CDFI of superior sagittal sinus showed that the stomas of 2 beagles were with slight stenosis and high flow velocity,of 1 beagle with small leakage and low flow velocity,while of other 5 beagles were normal.The histological examination showed endothelial cells were growing on the graft and superior sagittal sinus,and crawling toward the lumen of graft 8 weeks after the operation.Conclusion The beagles model of superior sagittal sinus bypass graft was established successfully.The short-term effect of the model was satisfactory,while further work should be performed to determine the long-term effects.

  1. Mycotic aneurysm of the superior mesenteric artery after septic embolism; Entwicklung eines mykotischen Aneurysmas der A. mesenterica superior nach septischer Embolie

    Energy Technology Data Exchange (ETDEWEB)

    Schmidt, F.; Dinkel, H.P. [Institut fuer Diagnostische Radiologie, Inselspital, Universitaetsklinik Bern (Switzerland)

    2002-07-01

    Mycotic aneurysms of the aorta and the visceral arteries are life-threatening diseases, due to potential rupture and organ or limb ischemia. They occur in endocarditis, immunodeficiency, bacteremia and fungemia, and have a poor prognosis.We report on a case of a 54-year-old male patient suffering from abdominal angina after mitral valve replacement for septic mycotic endocarditis. In presence of a mycotic-embolic occlusion of the left popliteal artery and multiple septic organ infarctions a mycotic aneurysm of the superior mesenteric artery was found in abdominal spiral-CT.Based on sequential spiral-CT examinations, this case demonstrates the development of a septic aneurysm of the superior mesenteric artery. (orig.) [German] Mykotische Aneurysmen der Aorta und ihrer Aeste stellen wegen Rupturgefahr und moeglicher Minderperfusion von Organen und Extremitaeten eine lebensgefaehrliche Erkrankung mit unguenstiger Prognose dar. Beguenstigende Faktoren sind geschwaechte Immunabwehr, Endokarditis, Bakteriaemie und Fungaemie.Wir berichten ueber einen 54-jaehrigen Patienten, der nach einem Mitralklappenersatz bei mykotischer Endokarditis zunehmende abdominelle Beschwerden im Sinne einer Angina abdominalis entwickelte. Die abdominelle Spiralcomputertomographie zeigte ein mykotisches Aneurysma der A. mesenterica superior. Daneben bestanden ein mykotischer Verschluss der linken A. poplitea und multiple septische Organinfarkte.Der Fall demonstriert anhand sequentieller Computertomographien eindrucksvoll die Entwicklung eines septischen Viszeralarterienaneurysmas. (orig.)

  2. THE GENERAL CONTEXTUAL FRAME FOR PLACING SUPERIOR STUDIES GRADUATES IN THE WORK MARKET

    Directory of Open Access Journals (Sweden)

    FELICIA ANDRIONI

    2013-12-01

    Full Text Available Integration in a workplace is an interaction rapport between the individual and the environment. The process of professional integration is strongly linked to the professional aspiration, individual expectations, motivation, and work satisfaction. Placing young graduates of superior studies on the labour market is a challenge for contemporary society. Identifying a suitable work place as well as the certainty of the attained work place are very important elements for young superior studies graduates in the current context of economic crysis. The difficulties in getting a job for superior studies graduates are most frequently associated with lacks in what regards the speciality practical skills and generally, insertion in the work market is achived by getting a position in fields that are related or even different from the speciality field. In an extremely unstable social and economic context, people’s ability to quickly adapt to the requirements of the labour market is fundamental. In this respect, education and professional training have an important role, contributing to the update of knowledge, skills and qualifications of superior studies graduates or future superior studies graduates, eventually allowing them to stay active, flexible, adapted to the situations and requirements of the labour market.

  3. (Mis)placed central venous catheter in the left superior intercostal vein

    International Nuclear Information System (INIS)

    Padovan, Ranka Stern; Paar, Maja Hrabak; Aurer, Igor

    2010-01-01

    Chest X-ray is routinely performed to check the position of the central venous catheter (CVC) inserted through the internal jugular or subclavian vein, while the further evaluation of CVC malfunction is usually performed by contrast venography. In patients with superior vena cava obstruction, the tip of the catheter is often seen in collateral mediastinal venous pathways, rather than in the superior vena cava. In such cases detailed knowledge of thoracic vessel anatomy is necessary to identify the exact location of the catheter. We report a case of 32-year-old female patient with relapsing mediastinal lymphoma and previous superior vena cava obstruction with collateral azygos-hemiazygos venous pathways. The patient had CVC inserted through the left subclavian vein and its position was detected by CT to be in the dilated left superior intercostal vein and accessory hemiazygos vein. Considering that dilated accessory hemiazygos vein can tolerate infusion, the CVC was left in place and the patient had no complaints related to CVC (mal)position. Furthermore, we present anatomical and radiological observations on the azygos-hemiazygos venous system with the special emphasis on the left superior intercostal vein. Non-contrast CT scans can be a valuable imaging tool in the detection of the CVC position, especially in patients with renal insufficiency and contrast media hypersensitivity

  4. A Inclusão de Pessoas com Necessidades Especiais no Ensino Superior

    Directory of Open Access Journals (Sweden)

    Ronaldo Queiroz de OLIVEIRA

    Full Text Available RESUMO: trata-se de uma revisão integrativa que objetivou analisar a produção científica sobre a educação inclusiva no ensino superior. Os dados foram coletados nas bases de dados Lilacs, Scielo, Cochrane, Medline e PubMed, entre os anos 2005 e 2014, utilizando-se os descritores controlados Special Education, Education Higher, Mainstreaming Education e Disabled Personse e os descritores não controlados Educação Especial, Educação Superior, Inclusão Educacional e Pessoas com Deficiência; Educación Superior, Propensíon Educación, Personas com Discapacidad. A amostra constituiu em 16 artigos. As publicações sobre a educação inclusiva no ensino superior têm sido tênues, demonstrando que ainda há muito a avançar nesse assunto. Conclui-se que o tema educação inclusiva é mais estudado em relação às crianças; as atenções dos estudiosos em relação a pessoas adultas com necessidades especiais envolvem mais a assistência em saúde e não a educação inclusiva no ensino superior.

  5. Neuroimaging findings in neonates and infants from superior vena cava obstruction after cardiac operation

    International Nuclear Information System (INIS)

    Karmazyn, Boaz; Horev, Gadi; Kornreich, Liora; Dagan, Ovdi; Vidne, Bernado A.

    2002-01-01

    Extraventricular obstructive hydrocephalus may develop after superior vena cava obstruction, an uncommon complication after cardiac surgery.Objective. To describe the neuroimaging findings in neonates and infants with superior vena cava thrombosis after cardiac surgery for congenital heart disease.Materials and methods. Between 1993 and 2001, 333 neonates and infants in our hospital underwent cardiac surgery, of whom 13 (3.9%) subsequently acquired superior vena cava syndrome. Eleven of these 13 children (7 boys, 4 girls) were evaluated by head ultrasound and computed tomography scans.Results. One child had normal findings on head ultrasound, and 10 children had extraventricular obstructive hydrocephalus (EVOH). In 6 children, aggravation of the hydrocephalus was noted up to 11.4 months after cardiac surgery; in 3 of them, the hydrocephalus was shunted to the peritoneum. One child had thrombosis of the dural sinuses, and 1 had hemorrhagic infarction. Two children died during follow-up.Conclusion. EVOH is a common complication of superior vena cava thrombosis, and head ultrasound should be performed in all neonates and infants with superior vena cava thrombosis after cardiac surgery. Long-term follow-up is needed, as the hydrocephalus may worsen even months after surgery. (orig.)

  6. Diagnosis of superior labral lesions: comparison of noncontrast MRI with indirect MR arthrography in unexercised shoulders

    International Nuclear Information System (INIS)

    Dinauer, Philip A.; Flemming, Donald J.; Murphy, Kevin P.; Doukas, William C.

    2007-01-01

    To prospectively compare the accuracy of noncontrast magnetic resonance imaging (MRI) with indirect MR arthrography (I-MRa) of unexercised shoulders for diagnosis of superior glenoid labral lesions. Institutional Review Board approval and patient informed consent were obtained for this prospective study. Superior labral findings on shoulder MRI and unexercised I-MRa studies of 104 patients were correlated with findings at arthroscopic shoulder surgery. Two musculoskeletal radiologists independently reviewed the two sets of MR images while blinded to arthroscopic results. For each radiologist, the McNemar test was used to detect statistically significant differences between techniques. The superior labrum was intact in 24 and abnormal in 80 subjects. For detection of superior labral lesions by each radiologist, I-MRa was more sensitive (84-91%) than MRI (66-85%), with statistically significant improvement in sensitivity for one reader (p = 0.003). However, I-MRa was less specific (58-71%) than MRI (75-83%). Overall, accuracy was slightly improved on I-MRa (78-86%) compared with MRI (70-83%), but this difference was not statistically significant for either reader. Compared with noncontrast MRI, I-MRa was more sensitive for diagnosis of superior glenoid labral lesions. However, the diagnostic value of I-MRa in shoulders remaining at rest is potentially limited by decreased specificity of the technique. (orig.)

  7. Superiority illusion arises from resting-state brain networks modulated by dopamine.

    Science.gov (United States)

    Yamada, Makiko; Uddin, Lucina Q; Takahashi, Hidehiko; Kimura, Yasuyuki; Takahata, Keisuke; Kousa, Ririko; Ikoma, Yoko; Eguchi, Yoko; Takano, Harumasa; Ito, Hiroshi; Higuchi, Makoto; Suhara, Tetsuya

    2013-03-12

    The majority of individuals evaluate themselves as superior to average. This is a cognitive bias known as the "superiority illusion." This illusion helps us to have hope for the future and is deep-rooted in the process of human evolution. In this study, we examined the default states of neural and molecular systems that generate this illusion, using resting-state functional MRI and PET. Resting-state functional connectivity between the frontal cortex and striatum regulated by inhibitory dopaminergic neurotransmission determines individual levels of the superiority illusion. Our findings help elucidate how this key aspect of the human mind is biologically determined, and identify potential molecular and neural targets for treatment for depressive realism.

  8. Amorphous Red Phosphorus Embedded in Sandwiched Porous Carbon Enabling Superior Sodium Storage Performances.

    Science.gov (United States)

    Wu, Ying; Liu, Zheng; Zhong, Xiongwu; Cheng, Xiaolong; Fan, Zhuangjun; Yu, Yan

    2018-03-01

    The red P anode for sodium ion batteries has attracted great attention recently due to the high theoretical capacity, but the poor intrinsic electronic conductivity and large volume expansion restrain its widespread applications. Herein, the red P is successfully encapsulated into the cube shaped sandwich-like interconnected porous carbon building (denoted as P@C-GO/MOF-5) via the vaporization-condensation method. Superior cycling stability (high capacity retention of about 93% at 2 A g -1 after 100 cycles) and excellent rate performance (502 mAh g -1 at 10 A g -1 ) can be obtained for the P@C-GO/MOF-5 electrode. The superior electrochemical performance can be ascribed to the successful incorporation of red P into the unique carbon matrix with large surface area and pore volume, interconnected porous structure, excellent electronic conductivity and superior structural stability. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  9. The picture superiority effect in conceptual implicit memory: a conceptual distinctiveness hypothesis.

    Science.gov (United States)

    Hamilton, Maryellen; Geraci, Lisa

    2006-01-01

    According to leading theories, the picture superiority effect is driven by conceptual processing, yet this effect has been difficult to obtain using conceptual implicit memory tests. We hypothesized that the picture superiority effect results from conceptual processing of a picture's distinctive features rather than a picture's semantic features. To test this hypothesis, we used 2 conceptual implicit general knowledge tests; one cued conceptually distinctive features (e.g., "What animal has large eyes?") and the other cued semantic features (e.g., "What animal is the figurehead of Tootsie Roll?"). Results showed a picture superiority effect only on the conceptual test using distinctive cues, supporting our hypothesis that this effect is mediated by conceptual processing of a picture's distinctive features.

  10. Eficacia educativa: avances de un modelo para la educación superior

    Directory of Open Access Journals (Sweden)

    Rafael Hernández-González

    2008-01-01

    Full Text Available Se analizó un modelo de eficacia educativa que permite al controlar el factor socioeconómico, determinar el valor agregado que las instituciones del Subsistema de Universidades Tecnológicas proporcionan a sus estudiantes. Es un estudio multinivel, longitudinal con resultados de 8,522 estudiantes de 38 universidades en 19 estados que sustentaron el examen nacional de ingreso a la educación superior (EXANI-II y el examen para el egreso de técnico superior universitario- Sistemas Informáticos (EGETSU-SI del Centro Nacional de Evaluación para la Educación Superior [CENEVAL] durante 2000-2006. El modelo identifica la eficacia de las instituciones y facilita la construcción de indicadores de calidad educativa.

  11. ¿Cuán rentable es la educación superior en Colombia?

    Directory of Open Access Journals (Sweden)

    Gustavo Hernández

    2010-01-01

    Full Text Available En este trabajo se analiza la rentabilidad de la educación superior en Colombia, particularmente, la hipótesis de screening, esto es, la importancia del capital humano adquirido. Se utilizó una nueva base de datos para la educación superior, la cual ha sido construida a partir de los registros administrativos de las instituciones de educación superior, y es cruzada con la base de aportantes de seguridad social. Se encuentra que el mercado laboral colombiano valora mucho la institución de la cual se gradúa el individuo, seguido por la elección de la carrera. Adicionalmente, la experiencia lograda posterior a la graduación tiene una mayor rentabilidad que la experiencia independiente de la clase de capital humano adquirido.

  12. A rare complication in a child undergoing chemotherapy for acute lymphoblastic leukemia: Superior sagittal sinus thrombosis

    Directory of Open Access Journals (Sweden)

    Ting-Yao Wang

    2011-04-01

    Full Text Available We report the case of a 4-year-old boy with acute lymphoblastic leukemia in high-risk group who suffered from generalized tonic-colonic seizure evolving into status epilepticus, and subsequent left hemiparesis during his first reinduction chemotherapy, consisting of dexamethasone, vincristine, l-asparaginase, and epirubicin. Superior sagittal sinus and cerebral venous thrombosis, predominantly in right side, were proved by brain magnetic resonance imaging. After aggressive treatment with low-molecular weight heparin (LMWH, left hemiparesis improved in 1 week. And he was fully ambulatory 3 weeks later. The second cycle of reinduction chemotherapy was conducted smoothly with the concomitant use of LMWH. This case illustrates the strong correlation of the rare thrombotic complication, superior sagittal sinus thrombosis, and hypercoagulable status secondary to combination use of l-asparaginase and corticosteroid. Early and vigilant recognition of superior sagittal sinus thrombosis and prompt anticoagulation with LMWH may prevent further neurological damage.

  13. La reforma de los proyectos docentes en el espacio europeo de educación superior.

    Directory of Open Access Journals (Sweden)

    Pérez Gladish, B.

    2003-01-01

    Full Text Available La declaración de Bolonia representa el compromiso de 29 países europeos para reformar su propio sistema o sistemas de educación superior con el objetivo de crear un espacio común de educación superior europeo que, respetando los principios fundamentales de autonomía y diversidad, mejore el empleo y la movilidad de los ciudadanos y aumente la competitividad internacional de la educación superior europea. Todos estos aspectos darán lugar a una profunda reforma con horizonte temporal en el 2010 de los planes de estudios y, en particular, de los programas de las asignaturas a impartir que se verá reflejada en los proyectos docentes. La presente comunicación pretende suscitar un debate a cerca del futuro diseño de los proyectos docentes.

  14. Duplication of Inferior Gluteal Artery and Course of Superior Gluteal Artery Through the Lumbosacral Trunk

    Directory of Open Access Journals (Sweden)

    Satheesha Nayak B

    2017-07-01

    Full Text Available Internal iliac artery (IIA shows great deal of variations in its branching pattern. The knowledge of its variant branches is required for successful surgical, orthopedic, plastic surgery and radiological procedures. We observed variations of some of the branches of right IIA in an adult male cadaver. The iliolumbar artery originated from the main trunk of the IIA. After this, IIA divided into anterior and posterior divisions. The posterior division gave lateral sacral and superior gluteal arteries. Superior gluteal artery pierced the lumbosacral trunk before leaving the pelvis. The anterior division further divided into anterior and posterior trunks. Anterior trunk gave rise to superior vesical, inferior vesical, middle rectal and obturator arteries. The posterior trunk gave two inferior gluteal arteries and an internal pudendal artery.

  15. Similarity and Dissimilarity between Superiors and Subordinates and Their Implications for Dyadic Relationship Quality

    Directory of Open Access Journals (Sweden)

    Nereida Salette Paulo da Silveira

    2009-01-01

    Full Text Available Although literature advocates the advantages of work force diversification, studies based on the Similarity- Attraction Paradigm indicate that people are more disposed to feel attraction to those who are similar to them. A field study with the comparative data of 89 dyads investigated the effect of the actual and perceived similarity in the quality of the relationship between superiors and subordinates within the Leader-Member Exchange [LMX] perspective. The investigated characteristics were: gender, age and work-family conflict. The data indicate the influence only of perceived similarity in the quality of the relationship between superiors and subordinates. This effect broadens when the subordinate feels satisfied with the quality and frequency of contact with his/her superior. The methodological procedures included factorial analysis and validation of two scales (EIFT and LMX-7, the correlations analysis and hierarchic regressions. Finally, the implications of some results and directions for future research in diversity are discussed.

  16. Effect of perturbations and a meal on superior mesenteric artery flow in patients with orthostatic hypotension

    Science.gov (United States)

    Fujimura, J.; Camilleri, M.; Low, P. A.; Novak, V.; Novak, P.; Opfer-Gehrking, T. L.

    1997-01-01

    Our aims were to evaluate to role of superior mesenteric blood flow in the pathophysiology of orthostatic hypotension in patients with generalized autonomic failure. METHODS: Twelve patients with symptomatic neurogenic orthostatic hypotension and 12 healthy controls underwent superior mesenteric artery flow measurements using Doppler ultrasonography during head-up tilt and tilt plus meal ingestion. Autonomic failure was assessed using standard tests of the function of the sympathetic adrenergic, cardiovagal and postganglionic sympathetic sudomotor function. RESULTS: Superior mesenteric flow volume and time-averaged velocity were similar in patients and controls at supine rest; however, responses to cold pressor test and upright tilt were attenuated (p stress can be significantly attenuated by reducing the splanchnic-mesenteric volume increase in response to food. Evaluation of mesenteric flow in response to eating and head-up tilt provide important information on intra-abdominal sympathetic adrenergic function, and the ability of the patient to cope with orthostatic stress.

  17. Identity Centrality and In-Group Superiority Differentially Predict Reactions to Historical Victimization and Harm Doing

    Directory of Open Access Journals (Sweden)

    Rezarta Bilali

    2012-12-01

    Full Text Available Two U.S. studies report a differential effect of identity centrality and in-group superiority on reactions to in-group victimization and in-group harm-doing. Study 1 (N = 80 found that higher identity centrality predicted less justification for freely-recalled in-group victim events, whereas higher in-group superiority predicted more justification for freely-recalled in-group harm-doing events. Study 2 (N = 105 reexamined these findings in specific contexts of historical victimization (Pearl Harbor and harm-doing (Hiroshima and Nagasaki, finding that in-group superiority was a predictor of reactions to historical in-group harm-doing (justification, emotional reactions, importance of events, whereas centrality was a predictor of reactions to historical in-group victimization.

  18. Recursos de información en la educación superior en Colombia

    Directory of Open Access Journals (Sweden)

    Feres E. Sahid C.

    1991-05-01

    Full Text Available RESUMEN El presente artículo se inspira en una investigación realizada por el autor, durante 1990 y 1991, relacionada con la administración y gestión de los recursos computacionales y recursos de información en las instituciones de educación superior en Colombia. El articulo pretende ofrecer a los lectores una diferenciación entre recursos computacionales y recursos de información, destacar la importancia de estos últimos  entre el desarrollo  de las instituciones de educación superior y dar una idea del proceso constante y rápido de cambio a que se encuentran sometidas las instituciones de educación superior, en lo que hace a tecnología de la información.

  19. Portfolio Evaluation Based on Efficient Frontier Superiority Using Center of Gravity

    Directory of Open Access Journals (Sweden)

    Omar Samat

    2010-01-01

    Full Text Available Investing in portfolio of assets is the best way to reduce the investment risk. The most desired portfolio can be obtained when investors chose to invest in the portfolios that lay on the portfolio’s efficient frontier. However, the superiorities of the portfolios are difficult to differentiate especially when the efficient frontier curves are overlapping. This paper proposed the portfolio’s efficient frontier center of gravity (CoG and Euclidean distance to identify its superiority. A sample of 49 stocks of large-cap and small-cap were used to construct two hypothetical portfolios and its efficient frontiers. The Euclidean distance showed that the large-cap portfolio is superior and having wider feasible solutions compared to the small-cap portfolio. The results of new tool introduced are consistent with the conventional methods. Here the theoretical and practical implications are provided in light of the findings.

  20. Competitively Distinct Operations as a Key for Superior and Sustainable Business Performance: An Example from Walmart

    Directory of Open Access Journals (Sweden)

    Binod Timilsina

    2015-09-01

    Full Text Available Existing research on the resource-based view (RBV has provided limited evidence on how firms achieve superior and sustainable business performance; this failure is because current literature de-emphasizes the importance of operations. This paper argues that to gain and sustain superior business performance, a firm’s sustainable competitive advantage is not enough, its operations also needs to be competitively distinct. Therefore, through unifying the necessary conditions of superior and sustainable business performance the paper presents a better understanding of the RBV. The success story of Walmart, from existing literature, is considered as an example to support the proposed framework. The paper concludes that the cost of operations, opportunity cost, cost of resources and possible output are the crucial factors in resource choice and operations decision to secure competitively distinct operations. Finally, theoretical and managerial implications, research limitations and future research possibilities are discussed.

  1. Acute gluteal compartment syndrome: superior gluteal artery rupture following a low energy injury.

    Science.gov (United States)

    Smith, Aubrey; Chitre, Vivek; Deo, Hersh

    2012-12-17

    Acute compartment syndrome affecting the gluteal region is rare when compared to the same condition in the forearm or calf. When it does occur, it is usually due to prolonged immobilisation in those with altered consciousness. Gluteal compartment syndrome resulting from injury to the superior gluteal artery is extremely rare and to our knowledge has been described only twice--both after high-energy road traffic accidents (RTA). Other cases have described profound hypotension with superior gluteal artery injury after an RTA and falling off a horse, without acute gluteal compartment syndrome. We present a case of gluteal compartment syndrome due to rupture of the superior gluteal artery following a relatively minor fall. The patient required an emergency fasciotomy, which was performed within 4 h of the injury. This case highlights the importance of early diagnosis and treatment of this rare condition.

  2. Association fiber pathways to the frontal cortex from the superior temporal region in the rhesus monkey

    International Nuclear Information System (INIS)

    Petrides, M.; Pandya, D.N.

    1988-01-01

    The projections to the frontal cortex that originate from the various areas of the superior temporal region of the rhesus monkey were investigated with the autoradiographic technique. The results demonstrated that the rostral part of the superior temporal gyrus (areas Pro, Ts1, and Ts2) projects to the proisocortical areas of the orbital and medial frontal cortex, as well as to the nearby orbital areas 13, 12, and 11, and to medial areas 9, 10, and 14. These fibers travel to the frontal lobe as part of the uncinate fascicle. The middle part of the superior temporal gyrus (areas Ts3 and paAlt) projects predominantly to the lateral frontal cortex (areas 12, upper 46, and 9) and to the dorsal aspect of the medial frontal lobe (areas 9 and 10). Only a small number of these fibers terminated within the orbitofrontal cortex. The temporofrontal fibers originating from the middle part of the superior temporal gyrus occupy the lower portion of the extreme capsule and lie just dorsal to the fibers of the uncinate fascicle. The posterior part of the superior temporal gyrus projects to the lateral frontal cortex (area 46, dorsal area 8, and the rostralmost part of dorsal area 6). Some of the fibers from the posterior superior temporal gyrus run initially through the extreme capsule and then cross the claustrum as they ascend to enter the external capsule before continuing their course to the frontal lobe. A larger group of fibers curves round the caudalmost Sylvian fissure and travels to the frontal cortex occupying a position just above and medial to the upper branch of the circular sulcus. This latter pathway constitutes a part of the classically described arcuate fasciculus

  3. DEMANDA E POLÍTICAS PÚBLICAS PARA O ENSINO SUPERIOR NOS BRICS

    Directory of Open Access Journals (Sweden)

    Simon Schwartzman

    Full Text Available Este artigo analisa a expansão do ensino superior nos países chamados BRICS. A aspiração crescente pelo ensino superior obriga os governos a gerir os custos de funcionamento desse sistema. As respostas de cada país variam com sua história, cultura e regime político. Todos eles enfrentam problemas semelhantes, como escassez de recursos e o poder político de atores do sistema de ensino superior e fora dele. Cinco dilemas se apresentam aos países: 1 expansão, igualdade de acesso e diversificação das matrículas, taxas de participação, o número e os tipos de instituições; 2 limitações financeiras; 3 regulação do ensino superior privado; 4 como fazer com que as instituições de ensino superior prestem mais contas a seus alunos, funcionários e à sociedade como um todo; e 5 qualidade e relevância social da aprendizagem e pesquisa em instituições de ensino superior. Utilizando dados e evidências das pesquisas mais recentes, o artigo mostra respostas comuns, com algumas exceções em cada caso: diversificação institucional; políticas de ação afirmativa; crescimento das matrículas nas ciências sociais, humanidades, profissões sociais e Educação; pouco sucesso nas políticas de internacionalização.

  4. Superior cervical gangliectomy induces non-exudative age-related macular degeneration in mice

    Directory of Open Access Journals (Sweden)

    Hernán H. Dieguez

    2018-02-01

    Full Text Available Non-exudative age-related macular degeneration, a prevalent cause of blindness, is a progressive and degenerative disease characterized by alterations in Bruch's membrane, retinal pigment epithelium, and photoreceptors exclusively localized in the macula. Although experimental murine models exist, the vast majority take a long time to develop retinal alterations and, in general, these alterations are ubiquitous, with many resulting from non-eye-specific genetic manipulations; additionally, most do not always reproduce the hallmarks of human age-related macular degeneration. Choroid vessels receive sympathetic innervation from the superior cervical ganglion, which, together with the parasympathetic system, regulates blood flow into the choroid. Choroid blood flow changes have been involved in age-related macular degeneration development and progression. At present, no experimental models take this factor into account. The aim of this work was to analyze the effect of superior cervical gangliectomy (also known as ganglionectomy on the choroid, Bruch's membrane, retinal pigment epithelium and retina. Adult male C57BL/6J mice underwent unilateral superior cervical gangliectomy and a contralateral sham procedure. Although superior cervical gangliectomy induced ubiquitous choroid and choriocapillaris changes, it induced Bruch's membrane thickening, loss of retinal pigment epithelium melanin content and retinoid isomerohydrolase, the appearance of drusen-like deposits, and retinal pigment epithelium and photoreceptor atrophy, exclusively localized in the temporal side. Moreover, superior cervical gangliectomy provoked a localized increase in retinal pigment epithelium and photoreceptor apoptosis, and a decline in photoreceptor electroretinographic function. Therefore, superior cervical gangliectomy recapitulated the main features of human non-exudative age-related macular degeneration, and could become a new experimental model of dry age

  5. Association fiber pathways to the frontal cortex from the superior temporal region in the rhesus monkey.

    Science.gov (United States)

    Petrides, M; Pandya, D N

    1988-07-01

    The projections to the frontal cortex that originate from the various areas of the superior temporal region of the rhesus monkey were investigated with the autoradiographic technique. The results demonstrated that the rostral part of the superior temporal gyrus (areas Pro, Ts1, and Ts2) projects to the proisocortical areas of the orbital and medial frontal cortex, as well as to the nearby orbital areas 13, 12, and 11, and to medial areas 9, 10, and 14. These fibers travel to the frontal lobe as part of the uncinate fascicle. The middle part of the superior temporal gyrus (areas Ts3 and paAlt) projects predominantly to the lateral frontal cortex (areas 12, upper 46, and 9) and to the dorsal aspect of the medial frontal lobe (areas 9 and 10). Only a small number of these fibers terminated within the orbitofrontal cortex. The temporofrontal fibers originating from the middle part of the superior temporal gyrus occupy the lower portion of the extreme capsule and lie just dorsal to the fibers of the uncinate fascicle. The posterior part of the superior temporal gyrus projects to the lateral frontal cortex (area 46, dorsal area 8, and the rostralmost part of dorsal area 6). Some of the fibers from the posterior superior temporal gyrus run initially through the extreme capsule and then cross the claustrum as they ascend to enter the external capsule before continuing their course to the frontal lobe. A larger group of fibers curves round the caudalmost Sylvian fissure and travels to the frontal cortex occupying a position just above and medial to the upper branch of the circular sulcus. This latter pathway constitutes a part of the classically described arcuate fasciculus.

  6. Traumatic superior orbital fissure syndrome: assessment of cranial nerve recovery in 33 cases.

    Science.gov (United States)

    Chen, Chien-Tzung; Wang, Theresa Y; Tsay, Pei-Kwei; Huang, Faye; Lai, Jui-Pin; Chen, Yu-Ray

    2010-07-01

    Superior orbital fissure syndrome is a rare complication that occurs in association with craniofacial trauma. The characteristics of superior orbital fissure syndrome are attributable to a constellation of cranial nerve III, IV, and VI palsies. This is the largest series describing traumatic superior orbital fissure syndrome that assesses the recovery of individual cranial nerve function after treatment. In a review from 1988 to 2002, 33 patients with superior orbital fissure syndrome were identified from 11,284 patients (0.3 percent) with skull and facial fractures. Severity of cranial nerve injury and functional recovery were evaluated by extraocular muscle movement. Patients were evaluated on average 6 days after initial injury, and average follow-up was 11.8 months. There were 23 male patients. The average age was 31 years. The major mechanism of injury was motorcycle accident (67 percent). Twenty-two received conservative treatment, five were treated with steroids, and six patients underwent surgical decompression of the superior orbital fissure. After initial injury, cranial nerve VI suffered the most damage, whereas cranial nerve IV sustained the least. In the first 3 months, recovery was greatest in cranial nerve VI. At 9 months, function was lowest in cranial nerve VI and highest in cranial nerve IV. Eight patients (24 percent) had complete recovery of all cranial nerves. Functional recovery of all cranial nerves reached a plateau at 6 months after trauma. Cranial nerve IV suffered the least injury, whereas cranial nerve VI experienced the most neurologic deficits. Cranial nerve palsies improved to their final recovery endpoints by 6 months. Surgical decompression is considered when there is evidence of bony compression of the superior orbital fissure.

  7. Association fiber pathways to the frontal cortex from the superior temporal region in the rhesus monkey

    Energy Technology Data Exchange (ETDEWEB)

    Petrides, M.; Pandya, D.N.

    1988-07-01

    The projections to the frontal cortex that originate from the various areas of the superior temporal region of the rhesus monkey were investigated with the autoradiographic technique. The results demonstrated that the rostral part of the superior temporal gyrus (areas Pro, Ts1, and Ts2) projects to the proisocortical areas of the orbital and medial frontal cortex, as well as to the nearby orbital areas 13, 12, and 11, and to medial areas 9, 10, and 14. These fibers travel to the frontal lobe as part of the uncinate fascicle. The middle part of the superior temporal gyrus (areas Ts3 and paAlt) projects predominantly to the lateral frontal cortex (areas 12, upper 46, and 9) and to the dorsal aspect of the medial frontal lobe (areas 9 and 10). Only a small number of these fibers terminated within the orbitofrontal cortex. The temporofrontal fibers originating from the middle part of the superior temporal gyrus occupy the lower portion of the extreme capsule and lie just dorsal to the fibers of the uncinate fascicle. The posterior part of the superior temporal gyrus projects to the lateral frontal cortex (area 46, dorsal area 8, and the rostralmost part of dorsal area 6). Some of the fibers from the posterior superior temporal gyrus run initially through the extreme capsule and then cross the claustrum as they ascend to enter the external capsule before continuing their course to the frontal lobe. A larger group of fibers curves round the caudalmost Sylvian fissure and travels to the frontal cortex occupying a position just above and medial to the upper branch of the circular sulcus. This latter pathway constitutes a part of the classically described arcuate fasciculus.

  8. Superior cervical gangliectomy induces non-exudative age-related macular degeneration in mice.

    Science.gov (United States)

    Dieguez, Hernán H; Romeo, Horacio E; González Fleitas, María F; Aranda, Marcos L; Milne, Georgia A; Rosenstein, Ruth E; Dorfman, Damián

    2018-02-07

    Non-exudative age-related macular degeneration, a prevalent cause of blindness, is a progressive and degenerative disease characterized by alterations in Bruch's membrane, retinal pigment epithelium, and photoreceptors exclusively localized in the macula. Although experimental murine models exist, the vast majority take a long time to develop retinal alterations and, in general, these alterations are ubiquitous, with many resulting from non-eye-specific genetic manipulations; additionally, most do not always reproduce the hallmarks of human age-related macular degeneration. Choroid vessels receive sympathetic innervation from the superior cervical ganglion, which, together with the parasympathetic system, regulates blood flow into the choroid. Choroid blood flow changes have been involved in age-related macular degeneration development and progression. At present, no experimental models take this factor into account. The aim of this work was to analyze the effect of superior cervical gangliectomy (also known as ganglionectomy) on the choroid, Bruch's membrane, retinal pigment epithelium and retina. Adult male C57BL/6J mice underwent unilateral superior cervical gangliectomy and a contralateral sham procedure. Although superior cervical gangliectomy induced ubiquitous choroid and choriocapillaris changes, it induced Bruch's membrane thickening, loss of retinal pigment epithelium melanin content and retinoid isomerohydrolase, the appearance of drusen-like deposits, and retinal pigment epithelium and photoreceptor atrophy, exclusively localized in the temporal side. Moreover, superior cervical gangliectomy provoked a localized increase in retinal pigment epithelium and photoreceptor apoptosis, and a decline in photoreceptor electroretinographic function. Therefore, superior cervical gangliectomy recapitulated the main features of human non-exudative age-related macular degeneration, and could become a new experimental model of dry age-related macular degeneration, and

  9. Planeamiento de la Educación Superior: los problemas que adoptamos y supimos construir

    OpenAIRE

    Giordano, Carlos José; Tauber, Fernando; Marengo, Roberto; Cornejo, Liliana; Virgolini, María Belén

    2015-01-01

    Bajo el título "Políticas de Planeamiento en la Educación Superior. Presupuesto, Planes Estratégicos y Metas Educativas Globales", nuestro grupo de investigación está estudiando el desarrollo de las políticas de planeamiento en la Educación Superior desde el análisis de los presupuestos y los planes estratégicos en función de metas educativas globales que han sido consensuadas y aceptadas para constituir el norte macroinstitucional del sistema. Al momento del diagnóstico inicial obs...

  10. Planeamiento de la Educación Superior: los problemas que adoptamos y supimos construir

    OpenAIRE

    Giordano, Carlos José; Tauber, Fernando; Marengo, Roberto; Cornejo, Liliana; Virgolini, María Belén

    2015-01-01

    Bajo el título "Políticas de Planeamiento en la Educación Superior. Presupuesto, Planes Estratégicos y Metas Educativas Globales", nuestro grupo de investigación está estudiando el desarrollo de las políticas de planeamiento en la Educación Superior desde el análisis de los presupuestos y los planes estratégicos en función de metas educativas globales que han sido consensuadas y aceptadas para constituir el norte macroinstitucional del sistema. Al momento del diagnóstico inicial observamos...

  11. La práctica de evaluación en cursos de algebra superior

    OpenAIRE

    Jarero, Martha Imelda; Ordaz, María

    2010-01-01

    Las instituciones de educación superior, en México, reportan bajos índices de eficiencia terminal; asociado a la reprobación escolar principalmente en asignaturas del área de ciencias. En la Facultad de Matemáticas de la Universidad Autónoma de Yucatán, la asignatura Álgebra Superior I reporta mayor índice de reprobación; por ello nos interesó describir los mecanismos de evaluación empleados por los profesores y explorar la posibilidad de considerarlos como factor causal de la reprobación. Co...

  12. Intracranial hemorrhage due to intracranial hypertension caused by the superior vena cava syndrome

    DEFF Research Database (Denmark)

    Bartek, Jiri; Abedi-Valugerdi, Golbarg; Liska, Jan

    2013-01-01

    We report a patient with intracranial hemorrhage secondary to venous hypertension as a result of a giant aortic pseudoaneurysm that compressed the superior vena cava and caused obstruction of the venous return from the brain. To our knowledge, this is the first patient reported to have...... an intracranial hemorrhage secondary to a superior vena cava syndrome. The condition appears to be caused by a reversible transient rise in intracranial pressure, as a result of compression of the venous return from the brain. Treatment consisted of surgery for the aortic pseudoaneurysm, which led...

  13. Rehabilitación de miembro superior con ambientes virtuales: revisión

    OpenAIRE

    Guzmán, D.E.; Londoño, J.

    2016-01-01

    Resumen En este artículo se presentan los resultados de un proceso de revisión bibliográfica sobre rehabilitación de miembro superior basada en ambientes virtuales. El estudio parte de los siguientes interrogantes sobre el estado actual del conocimiento en el área mencionada: ¿cómo inciden los entornos virtuales frente a la rehabilitación tradicional?, ¿qué métricas de desempeño se han aplicado en la rehabilitación virtual de miembro superior? y ¿qué dispositivos hardware se utilizan en rehab...

  14. Algunos aspectos sobre blockchains y smart contracts en educación superior

    OpenAIRE

    Amorós Poveda, Lucía

    2018-01-01

    Els conceptes de cadenes de blocs (blockchains) i contractes intel·ligents (smart contracts) ofereixen una alternativa sostenible en educació superior. Des d’aquest objectiu, es presenta una revisió d’ambdós conceptes i la seva relació amb els termes bitcoin, ledger, edublock i educoin. En un segon moment, s’atén a les xarxes en educació superior basades en tecnologia de cadenes de blocs, el seu vincle amb els contractes intel·ligents i les possibilitats a dia d’avui.

  15. "Walk the Rim, Feel the Bone" Technique in Superior Sulcus Filling.

    Science.gov (United States)

    Looi, Audrey L G; Yong, Kai-Ling

    2015-12-01

    Superior sulcus filler injection is a nonsurgical method to rejuvenate the upper face. Blindness and stroke are devastating complications of facial filler injection. This study describes an injection technique that minimizes the risk of blindness and includes a case study demonstrating the cosmetic benefits of this procedure. To avoid retrograde injection of filler embolus into the ophthalmic artery, we advocate a "'walk the rim, feel the bone" approach. Small boluses of hyaluronic acid filler are given in preperiosteal plane, avoiding the superior orbital foramen.

  16. Gianturco expandable wire stents for treatment of superior vena cava syndrome secondary to lung carcinoma

    International Nuclear Information System (INIS)

    Rosch, J.; Bedell, J.; Putnam, J.; Antonovic, R.; Uchida, B.

    1986-01-01

    Two patients with superior vena cava syndrome (SVCS) secondary to lung carcinoma which recurred after maximum-dose radiation therapy were treated with placement of modified Gianturco expandable wire stents constructed in the authors' research laboratory. Symptoms of SVCS disappeared in 24 hours after stent placement, and the patients remained asymptomatic to their last follow-up, 2 1/2 months after the procedure (to the submission of this abstract). Both stents were widely patent at that time on superior vena cavograms and draining well the head, neck, and upper extremity circulation to the right atrium

  17. Redes de colaboración en Educación Superior

    OpenAIRE

    Solano Fernández, Isabel Mª

    2012-01-01

    Redes de colaboración para la Educación Superior. Se analiza el modelo pedagógico constructivista social, y dentro de este el método colaborativo. Posteriormente analiza las posibilidades de las redes, redes sociales y medios sociales, para la Educación. Presentación realizada para realizar el taller "redes de colaboración en Educación Superior" en el Seminario de innovación docente Organizado por el Centro de Desarrolo Docente (CDDOC) de la Universidad Católica de Chile.

  18. Inovação curricular no ensino superior: entrevista com Marcos Tarciso Masetto

    OpenAIRE

    Masetto, Marcos Tarciso; Nonato, Bréscia; Medeiros, Zulmira

    2017-01-01

    A temática da melhoria na qualidade da formação pedagógica dos docentes de ensino superior sempre foi para ele um problema de pesquisa, mas, há aproximadamente doze anos, Masetto tem se dedicado a um novo tema: a inovação no ensino superior. Masetto coordena na PUC- SP o grupo de pesquisa Formação de Professores e Paradigmas Curriculares (FORPEC)3, que tem como objetivo central “investigar a relação entre formação de professores e currículos inovadores no ensino superior”. Nesta entrevista, o...

  19. Propuesta para la financiación de la educación superior en colombia

    OpenAIRE

    Mora Cortés, Andrés Felipe

    2012-01-01

    Inspirado en los modelos de asignación ciudadana y renta básica de ciudadanía, el documento presenta una propuesta para el financiamiento de la educación superior en Colombia. Se presentará una alternativa que brinda a todos los jóvenes de Colombia la oportunidad de ejercer su derecho a la educación superior. Bajo principios de universalidad, individualidad e incondicionalidad se le ofrecerá a cada uno de sus ciudadanos una asignación de 30 millones de pesos en e...

  20. Superior Mesenteric Artery Pseudoaneurysm Associated with Celiac Axis Occlusion Treated Using Endovascular Techniques

    International Nuclear Information System (INIS)

    Ray, Biswajit; Kuhan, Ganesh; Johnson, Brian; Nicholson, Anthony A.; Ettles, Duncan F.

    2006-01-01

    The case of a 30-year-old woman with a post-traumatic pseudoaneurysm of the superior mesenteric artery and associated celiac axis occlusion is presented. The patient was successfully treated with celiac artery recanalization and placement of a covered stent within the superior mesenteric artery. Follow-up at 3, 6, and 12 months and 3 years demonstrated patency of the covered stent and continued exclusion of the aneurysm. Although the long-term success of this procedure is unknown this management option should be considered where facilities are available, to reduce the increased morbidity associated with open surgical procedure

  1. Technical development of alcohol for fuel. Inspection and breeding of superior bacteria

    Energy Technology Data Exchange (ETDEWEB)

    1987-09-01

    Heat- and alcohol-resistant bacteria for alcoholic fermentation were separated from the soils in Japan and abroad and the performance was evaluated to develop superior bacteria for ethanol fermentation. The superior bacteria pertinent to alcoholic fermentation were bred by domestication, variation treatment, cell fusion and gene manipulation. The productivity of ethanol was increased by controlling pH of thermophilic, aerobic cellulase and culturing the mixture of added nutrients. CMC ase and Beta-glucosidase genes, the component enzymes of cellulase, were successfully developed by Zymomonas sp. A promotor selecting vector of Zymomonas was produced for developing xylolase gene to acquire an active promotor.

  2. CEF is superior to CMF for tumours with TOP2A aberrations

    DEFF Research Database (Denmark)

    Gunnarsdóttir, Katrín A; Jensen, Maj-Britt; Zahrieh, David

    2010-01-01

    47:725-734, 2008) demonstrated that superiority of CEF over CMF is limited to patients with TOP2A aberrations, defined as patients whose tumours have TOP2A ratio below 0.8 or above 2.0. The Subpopulation Treatment Effect Pattern Plot (STEPP) technique was applied to these data to explore the pattern...... of treatment effect relative to TOP2A and to compare that pattern to the ranges previously used to define 'aberrations'. The pattern of treatment effect illustrated by the STEPP analysis confirmed that the superiority of CEF over CMF is indeed limited to patients whose tumours have high or low TOP2A ratios...

  3. Bulky scalp metastasis and superior sagittal sinus thrombosis from a cervical adenocarcinoma: an unusual case

    International Nuclear Information System (INIS)

    Abhishek, A.; Ouseph, M. M.; Sharma, M.; Sharma, P.; Kamal, V.

    2008-01-01

    Distant cutaneous metastases from cervical malignancies are uncommon, with scalp metastases being exceptional events. We present the case of a 53-year-old postmenopausal lady with adenocarcinoma of the uterine cervix that metastasized to the scalp with superior sagittal sinus thrombosis 8 months after diagnosis. In contrast to the seven prior cases of scalp metastases of cervical squamous cell carcinoma reported in published reports, ours is the first documentation of such an occurrence in cervical adenocarcinoma. Superior sagittal sinus thrombosis has not been reported with this tumour in the past.

  4. Interculturalidad y educación superior: diversidad de contextos, actores, visiones y propuestas

    Directory of Open Access Journals (Sweden)

    Daniel Mato

    2007-01-01

    Full Text Available Diversas ideas de interculturalidad constituyen el piso epistemológico de propuestas de educación superior de también diversas organizaciones indígenas y afrodescendientes, universidades "convencionales" y agencias de Estados igualmente diversas. Este artículo procura caracterizar las principales concepciones de la idea de interculturalidad aplicadas a la educación superior y sus relaciones con los respectivos contextos de producción de las mismas, sus convergencias y divergencias.

  5. Superior coexistence: systematicALLY regulatING land subsidence BASED on set pair theory

    Directory of Open Access Journals (Sweden)

    Y. Chen

    2015-11-01

    Full Text Available Anthropogenic land subsidence is an environmental side effect of exploring and using natural resources in the process of economic development. The key points of the system for controlling land subsidence include cooperation and superior coexistence while the economy develops, exploring and using natural resources, and geological environmental safety. Using the theory and method of set pair analysis (SPA, this article anatomises the factors, effects, and transformation of land subsidence. Based on the principle of superior coexistence, this paper promotes a technical approach to the system for controlling land subsidence, in order to improve the prevention and control of geological hazards.

  6. The Effect of Adversary Unmanned Aerial Systems on the US Concept of Air Superiority

    Science.gov (United States)

    2014-12-04

    The German V1 and V2 challenged the concept of Allied air superiority during WWII. The history surrounding the V-weapons parallels the current...weapons in World War II. The V1 and V2 represented a previously unseen threat to Allied air superiority. The Germans focused the weapons on Allied...bombing.” 33 Hitler and the German High Command hoped to begin a large-scale bombardment with both V-1 flying bombs and V-2 rockets in late 1943 or

  7. A CONTRIBUIÇÃO DAS UNIVERSIDADES ESTADUAIS (UEs) PARA O ENSINO SUPERIOR NO BRASIL

    OpenAIRE

    Lopes, Clécio Moreira; Universidade Federal do Piauí; Passos, Guiomar Oliveira; Universidade Federal do Piauí

    2015-01-01

    RESUMO   Analisa-se a participação das universidades estaduais no ensino superior do Brasil, comparando-as com as federais, municipais e privadas em termos do número de instituições, vagas, ingressantes, matrículas e concluintes antes e depois da Lei de Diretrizes e Bases da Educação Nacional. Pergunta-se: qual a contribuição para o ensino superior brasileiro e que efeitos as inovações da LDB provocaram no setor? Deseja-se dimensionar essa participação, comparando a parcela de contribu...

  8. Over-activation in bilateral superior temporal gyrus correlated with subsequent forgetting effect of Chinese words.

    Science.gov (United States)

    Chen, Tzu-Ching; Kuo, Wen-Jui; Chiang, Ming-Chang; Tseng, Yi-Jhan; Lin, Yung-Yang

    2013-08-01

    We evaluated the subsequent memory and forgotten effects for Chinese using event-related fMRI. Sixteen normal subjects were recruited and performing incidental memory tasks where semantic decision was required during memory encoding. Consistent with previous studies, our results showed bilateral frontal regions as the main locus for the subsequent memory effect. However, contrast between miss and hit responses revealed larger activation in bilateral superior temporal gyrus. We proposed that larger activation in the superior temporal gyrus may reflect alteration of self-monitoring process which resulted in unsuccessful memory encoding for the miss items. Copyright © 2013 Elsevier Inc. All rights reserved.

  9. Race Superiority or Racism: A review in the light of World Religions and Islamic Teachings (urdu

    Directory of Open Access Journals (Sweden)

    Fatima

    2016-07-01

    Full Text Available ABSTRACT Race represents a specific caste, creed and a generation of a common ancestor. It has been a source of identification among different tribes and group of people, since humankind started life on this earth. With the passage of time different races have started using their racial backgrounds as negative sentiments which created superiority and inferiority complexes among people. Concepts of chosen people aroused in different races which created great gap, differences and hate in the society. The current research work is based upon the concept of superiority in Hinduism and Judaism, which will be further reviewed in the light of Islamic teachings.

  10. The Picture Superiority Effect in Recognition Memory: A Developmental Study Using the Response Signal Procedure

    Science.gov (United States)

    Defeyter, Margaret Anne; Russo, Riccardo; McPartlin, Pamela Louise

    2009-01-01

    Items studied as pictures are better remembered than items studied as words even when test items are presented as words. The present study examined the development of this picture superiority effect in recognition memory. Four groups ranging in age from 7 to 20 years participated. They studied words and pictures, with test stimuli always presented…

  11. Transformación digital en las instituciones de educación superior

    OpenAIRE

    Llorens Largo, Faraón

    2018-01-01

    Presentación utilizada en la charla "Transformación digital en las instituciones de educación superior" en el Dia Virtual de la Conferencia TICAL2018 y II Encuentro de eCiencia, el 12 de abril de 2018. https://eventos.redclara.net/indico/event/863/overview

  12. Thrombosis caused by polyurethane double-lumen subclavian superior vena cava catheter and hemodialysis

    DEFF Research Database (Denmark)

    Wanscher, Maria Rørbæk; Frifelt, J J; Smith-Sivertsen, C

    1988-01-01

    During an 18-month period, 82 consecutive patients (37 women and 45 men), with a mean age of 50 yr (range 15 to 74), underwent hemodialysis with 91 polyurethane double-lumen subclavian superior vena cava catheters inserted via the right subclavian vein. Upon catheter removal, venograms were...

  13. Facilitating Effects of Emotion on the Perception of Biological Motion: Evidence for a Happiness Superiority Effect.

    Science.gov (United States)

    Lee, Hannah; Kim, Jejoong

    2017-06-01

    It has been reported that visual perception can be influenced not only by the physical features of a stimulus but also by the emotional valence of the stimulus, even without explicit emotion recognition. Some previous studies reported an anger superiority effect while others found a happiness superiority effect during visual perception. It thus remains unclear as to which emotion is more influential. In the present study, we conducted two experiments using biological motion (BM) stimuli to examine whether emotional valence of the stimuli would affect BM perception; and if so, whether a specific type of emotion is associated with a superiority effect. Point-light walkers with three emotion types (anger, happiness, and neutral) were used, and the threshold to detect BM within noise was measured in Experiment 1. Participants showed higher performance in detecting happy walkers compared with the angry and neutral walkers. Follow-up motion velocity analysis revealed that physical difference among the stimuli was not the main factor causing the effect. The results of the emotion recognition task in Experiment 2 also showed a happiness superiority effect, as in Experiment 1. These results show that emotional valence (happiness) of the stimuli can facilitate the processing of BM.

  14. Presentation Time Concerning System-Paced Multimedia Instructions and the Superiority of Learner Pacing

    Science.gov (United States)

    Stiller, Klaus D.; Petzold, Kirstin; Zinnbauer, Peter

    2011-01-01

    The superiority of learner-paced over system-paced instructions was demonstrated in multiple experiments. In these experiments, the system-paced presentations were highly speeded, causing cognitive overload, while the learner-paced instructions allowed adjustments of the presentational flow to the learner's needs by pacing facilities, mostly…

  15. Revising superior planning performance in chess players: the impact of time restriction and motivation aspects.

    Science.gov (United States)

    Unterrainer, Josef Martin; Kaller, Christoph Philipp; Leonhart, Rainer; Rahm, Benjamin

    2011-01-01

    In a previous study (Unterrainer, Kaller, Halsband, & Rahm, 2006), chess players outperformed non-chess players in the Tower of London planning task but exhibited disproportionately longer processing times. This pattern of results raises the question of whether chess players' planning capabilities are superior or whether the results reflect differences in the speed-accuracy trade-off between the groups, possibly attributable to sports motivation. The present study was designed to disambiguate these alternative suggestions by implementing various constraints on planning time and by assessing self-reported motivation. In contrast to the previous study, chess players' performance was not superior, independently of whether problems had to be solved with (Experiment 1) or without (Experiment 2) time limits. As expected, chess players reported higher overall trait and state motivation scores across both experiments. These findings revise the notion of superior planning performance in chess players. In consequence, they do not conform with the assumption of a general transfer of chess-related planning expertise to other cognitive domains, instead suggesting that superior performance may be possible only under specific circumstances such as receiving competitive instructions.

  16. Memory for Pictures, Words, and Spatial Location in Older Adults: Evidence for Pictorial Superiority.

    Science.gov (United States)

    Park, Denise Cortis; And Others

    1983-01-01

    Tested recognition memory for items and spatial location by varying picture and word stimuli across four slide quadrants. Results showed a pictorial superiority effect for item recognition and a greater ability to remember the spatial location of pictures versus words for both old and young adults (N=95). (WAS)

  17. The apparent size of three-dimensional objects and their silhouettes: a solid-superiority effect.

    Science.gov (United States)

    Walker, J T; Walker, M J

    1988-01-01

    A solid object looks larger than its outline or silhouette under many viewing conditions. This solid-superiority effect may result from the assimilation or confusion of visual contours within the projection of a three-dimensional object on the picture plane. An aspect of the Müller-Lyer illusion may also play a role.

  18. 76 FR 22360 - Superior National Forest, Gunflint, Kawishiwi, LaCroix, and Tofte Ranger Districts; Minnesota...

    Science.gov (United States)

    2011-04-21

    ... made is whether or not to implement an integrated pest management strategy to control non-native... integrity of the BWCAW, the Superior National Forest proposes to use an integrated pest management approach... accomplish these objectives, there is a need to implement an integrated pest management approach that...

  19. Posterior semicircular canal dehiscence: a morphologic cause of vertigo similar to superior semicircular canal dehiscence

    International Nuclear Information System (INIS)

    Krombach, G.A.; Schmitz-Rode, T.; Haage, P.; Guenther, R.W.; DiMartino, E.; Prescher, A.; Kinzel, S.

    2003-01-01

    Heading Abstract.The aim of this study was to assess imaging findings of posterior semicircular dehiscence on computed tomography and to evaluate incidence of posterior and superior semicircular canal dehiscence in patients presenting with vertigo, sensorineuronal hearing loss or in a control group without symptoms related to the inner ear. Computed tomography was performed in 507 patients presenting either with vertigo (n=128; 23 of these patients suffered also from sensorineuronal hearing loss), other symptoms related to the inner ear, such as hearing loss or tinnitus (n=183) or symptoms unrelated to the labyrinth (n=196). All images were reviewed for presence of dehiscence of the bone, overlying the semicircular canals. Twenty-nine patients had superior semicircular canal dehiscence. Of these patients, 83% presented with vertigo, 10% with hearing loss or tinnitus and the remaining 7% with symptoms unrelated to the inner ear. In 23 patients dehiscence of the posterior semicircular canal was encountered. Of these patients, 86% presented with vertigo, 9% with hearing loss or tinnitus and 5% with symptoms unrelated to the inner ear. Defects of the bony overly are found at the posterior semicircular canal, in addition to the recently introduced superior canal dehiscence syndrome. Significant prevalence of vertigo in these patients suggests that posterior semicircular canal dehiscence can cause vertigo, similar to superior semicircular canal dehiscence. (orig.)

  20. Visual Processing in Adolescents with Autism Spectrum Disorder: Evidence from Embedded Figures and Configural Superiority Tests

    Science.gov (United States)

    Dillen, Claudia; Steyaert, Jean; Op de Beeck, Hans P.; Boets, Bart

    2015-01-01

    The embedded figures test has often been used to reveal weak central coherence in individuals with autism spectrum disorder (ASD). Here, we administered a more standardized automated version of the embedded figures test in combination with the configural superiority task, to investigate the effect of contextual modulation on local feature…