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Sample records for da superficie cimentaria

  1. Evaluation of the morphological alteration of the root surface radiated with a diode laser; Avaliacao da alteracao morfologica da superficie cimentaria irradiada com laser de diodo

    Energy Technology Data Exchange (ETDEWEB)

    Gulin, Mauricio

    2003-07-01

    The diode laser has been studied for periodontal therapy, as much for removal of calculus as for microbial reduction of periodontal pockets, as well as the visible analgesic effects and biomodulation capacity. For this reason the purpose of this study was to evaluate the morphological alteration of the root surface after radiation with the diode laser, 808 nm through analysis by scanning electron microscopy (SEM). Besides this, to verify the temperature variations caused during the radiation, a thermometer put into the dentinal wall of the root canal was used. In all, 18 teeth were used, 15 of which for the SEM study, and the other 3 were used to temperature variation analysis. The 25 samples were scraped on the root surface and planed with manual instruments. The other 5 were not subjected to any type of treatment. This, 6 groups of 5 samples each were formed. Control Group C whose samples had not received any treatment; Control Group C 1 was only scraped and polished conventionally with Hu-Friedy Gracey curettes 5 and 6; the other samples groups L1, L2, L3, L4 were radiated by diode laser using parameters of power 1,0 W; 1,2 W; 1,4 W; and 1,6 W respectively, 2 times for 10 seconds with 20 seconds intervals between each radiation in continuous mode. The results with relation to the increase of temperature in the interior of the root canal demonstrated that there was an increase of more than 5 degree Celsius. The results of the scanning electron microscope analysis of Control Group C demonstrated great irregularity and ridges on the root surface, with the presence of a dentine layer. Control Group C1 presented a similar aspect to Group L 1's, smoother and more homogeneous surface. Groups L2, L3, and L4 presented scratches alternating with smoother areas showing that fiber contacted the surface of the sample. The results reconfirmed the necessity of further studies using diode laser, with a beam of light emitted in an interrupted mode to improve the control of the increase of temperature during radiation, and probably followed by a new scraping and root polishing with conventional instruments in an attempt to obtain a smoother and more homogeneous root surface. (author)

  2. DIATERMIA POR ONDAS CURTAS: ANÁLISE DA TEMPERATURA CORPORAL SUPERFICIAL POR TERMOGRAFIA

    OpenAIRE

    Sergio Fernando Zavarize; Anderson Martelli; Samara Aparecida Machado; Estela Maria Correia Sant’Ana

    2014-01-01

    Introdução: Poucos estudos relacionam os efeitos da diatermia por ondas curtas (DOC) e a área de aquecimento promovido por sua aplicação. Objetivo: O objetivo do trabalho foi avaliar o comportamento da temperatura superficial corporal antes e após a aplicação de DOC por meio da termografia cutânea. Materiais e métodos: A análise da temperatura corporal no local da aplicação foi realizada através da captura da imagem por meio de câmera termográfica após quinze minutos de repouso do...

  3. The anatomy of the superficial external pudendal artery: a quantitative study Anatomia da artéria pudenda superficial externa: estudo quantitativo

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    Osvaldir Lanzoni La Falce

    2006-10-01

    variability in both the diameter of the artery and the distance from the artery to the inguinal ligament. Most of the data showed no significant differences between the right and the left sides.A importância do conhecimento da anatomia da artéria pudenda superficial externa está bem estabelecida e um conhecimento adequado de sua anatomia é desejável para a criação bem sucedida de flaps. Entretanto, são escassos os trabalhos morfométricos sobre esta artéria. OBJETIVO. No presente estudo, foi feita uma análise quantitativa da artéria pudenda superficial externa, como base para enxertos de pele. MÉTODO. Foram dissecadas 25 regiões inguinais direitas e 25 esquerdas de cadáveres do sexo masculino. Após rebater a pele da região inguinal, os vasos femorais, a junção safeno-femoral e a artéria pudenda superficial externa foram expostas. Os seguintes aspectos foram então analisados: 1. Presença da artéria pudenda superficial externa; 2. Local de origem da artéria pudenda superficial externa ou do tronco comum; 3. Duplicação da artéria pudenda superficial externa; 4. Distância da artéria pudenda superficial externa ou do tronco comum ao ligamento inguinal; 5. Diâmetro da artéria pudenda superficial externa. RESULTADOS. Os resultados mostraram que: 1. A artéria pudenda superficial externa foi encontrada em 46 dos 50 lados dissecados (92%; 2. A artéria teve origem na artéria femoral em 45 casos; em um único caso teve origem na artéria femoral profunda; 3. A artéria foi encontrada duplicada, em 21 casos (46%, formando um tronco comum, que depois se bifurcava, em 11 casos (24% e como uma artéria única 14 vezes (30%; 4. A distância da artéria ao ligamento inguinal variou de 0,8 cm a 8,5 cm; quando sob a forma de tronco comum, esta distância variou de 3,5 cm a 6,7 cm; 5. O diâmetro da artéria pudenda superficial externa variou de 1,36 mm a 5,15 mm. CONCLUSÕES. Os resultados mostram que a artéria pudenda superficial externa origina-se, na grande

  4. Micoses superficiais e os elementos da resposta imune Superficial mycosis and the immune response elements

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    Paulo Ricardo Criado

    2011-08-01

    Full Text Available As micoses superficiais são prevalentes em todo o mundo, geralmente ocasionadas por dermatófitos e restritas à camada córnea. A resposta imunológica do hospedeiro às infecções dos fungos dermatófitos depende basicamente das defesas do hospedeiro a metabólitos do fungo, da virulência da cepa ou da espécie infectante e da localização anatômica da infecção. Serão revistos alguns dos fatores da defesa imunológica do hospedeiro que influenciam na eficácia da resposta imune. Em especial, a participação dos receptores de padrão de reconhecimento (PRRs, tais como os receptores toll-like ou os da família lectina (DC-SIGN e dectin-2, que participam da resposta imune inata, conferindo-lhe especificidade e definindo o padrão da resposta imune como um todo. O predomínio celular ou humoral da resposta imune definirá o quadro clínico e o prognóstico da infecção, levando à cura ou cronicidadeSuperficial mycoses are prevalent worldwide. They are often caused by dermatophytes and restricted to the stratum corneum. The host's immune response against infections caused by dermatophytes basically depends on the host's defense against metabolites of the fungi, virulence of the infecting strain or species and anatomical site of the infection. We will review some of the factors of the host's immune defense that influence the efficacy of the immune response. We will particularly review the role of pattern recognition receptors (PRRs, such as toll-like receptors or lectin receptors (DCSIGN and Dectin 2, which participate in the innate immune response, bringing specificity to the immune response and setting its pattern. The predominance of a cellular or humoral immune response determines the clinical manifestations and the prognosis of the infection, leading to healing or chronicity

  5. Tratamento do aneurisma aterosclerótico da artéria temporal superficial: relato de caso

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    Paula Dayana Matkovski

    2015-09-01

    Full Text Available ResumoAneurismas da artéria temporal superficial são incomuns segundo a literatura. A grande maioria é secundária a traumatismos ou cirurgia na região temporal, sendo que 95% dos casos evoluem para pseudoaneurismas. Entretanto, os aneurismas verdadeiros ou espontâneos são extremamente raros e representam 8% dos casos de aneurismas da artéria temporal superficial, sendo estes, geralmente, de origem aterosclerótica. Aneurismas temporais espontâneos podem coexistir com outras lesões vasculares, incluindo aneurismas intracranianos. Nosso relato trata de um paciente com aneurisma de artéria temporal superficial esquerda, de origem aterosclerótica, no qual foi realizada a excisão cirúrgica, sob anestesia geral.

  6. Associacao entre o indice de respiracao rapida e superficial e o sucesso da extubacao em pacientes com traumatismo cranioencefalico

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    Helena Franca Correia dos Reis

    2013-09-01

    Full Text Available OBJETIVO: Verificar a associação entre o índice de respiração rápida e superficial e o sucesso da extubação em pacientes com traumatismo cranioencefálico. MÉTODOS: Estudo prospectivo, formado por pacientes com traumatismo cranioencefálico, de ambos os gêneros, ventilados mecanicamente por pelo menos 2 dias, que obtiveram sucesso no teste de respiração espontânea. Foram mensurados, por meio da ventilometria, o volume-minuto e a frequência respiratória, sendo calculado o índice de respiração rápida e superficial (frequência respiratória/volume corrente. A variável dependente foi o resultado da extubação: reintubação em 48 horas (falha da extubação ou não (sucesso da extubação. A variável independente foi o índice de respiração rápida e superficial mensurado após o sucesso no teste de respiração espontânea. RESULTADOS: A amostra foi constituída por 119 pacientes, sendo 111 (93,3% do gênero masculino. A média da idade foi de 35,0±12,9 anos. O tempo médio de ventilação mecânica foi de 8,1±3,6 dias. Cento e quatro (87,4% pacientes obtiveram sucesso na extubação. Não foi observada associação entre o índice de respiração rápida e superficial e o sucesso da extubação. CONCLUSÃO: O índice de respiração rápida e superficial não esteve associado ao sucesso da extubação em pacientes com traumatismo cranioencefálico.

  7. Influência da textura superficial dos implantes = Texture of the titanium implant surfaces

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    Nagem Filho, Halim

    2007-01-01

    Full Text Available Dentre as várias características dos implantes a topografia da superfície é reconhecida como fator capaz de alterar a resposta das células dos tecidos adjacentes modificando a migração, inserção, proliferação e síntese de colágeno no local, determinando assim o tipo de tecido que será obtido na interface osso-implante e sua integração. Graças aos diferentes tipos de tratamentos tornou-se possível obter várias formas de caracterização da superfície facilitando a compreensão dos padrões de formação óssea, comportamento das células e até mesmo prever o tipo cicatricial que será obtido a partir da conformação dos tecidos adjacentes às superfícies dos implantes. Superfície de titânio com a rugosidade e microestrutura complexa aumenta a osseointegração no contato osso e implante, eleva a força de torque de remoção in vivo e a diferenciação in vitro dos osteoblastos induzidos pela função de rugosidade e topografia na osseointegração. Em superfícies de implantes tratadas com plasma de titânio (TPS, jateadas com areia e tratadas com ácido (SLA os resultados demonstraram que tanto a rugosidade como o tratamento químico das superfícies pode influenciar bastante a força superficial de cisalhamento (resistência oferecida à remoção. Estas características da superfície do titânio, além de otimizar o procedimento, podem ainda, por exemplo, permitir a colocação dos implantes em função mais precocemente e ampliar a gama de aplicações possíveis para osso alveolar de densidade inferior ou favorecer sua aplicação em osso regenerado

  8. Influência da temperatura, da massa molar e da distribuição de massa molar na tensão superficial de PS, PP e PE: experimento e teoria

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    Moreira José C.

    2003-01-01

    Full Text Available Neste trabalho a influência da temperatura, da massa molar (n e da distribuição de massa molar (MWD na tensão superficial de poliestireno (PS foi avaliada utilizando o método da gota pendente. A influência da temperatura na tensão superficial de polipropileno isotático (i-PP e de polietileno de baixa densidade (PELBD também foi estudada aqui. As teorias de Patterson-Rastogi e Dee-Sauer foram utilizadas em conjunção com a teoria de equação de estado de Flory, Orwoll, e Vrij (FOV para prever a tensão superficial (gama utilizando dados de pressão-volume-temperatura (PVT dos polímeros. Ambas teorias prevêem que a tensão superficial diminui linearmente com o aumento da temperatura e aumenta com a massa molar concordando com os resultados experimentais. Entretanto, ambas teorias subestimam a mudança de entropia de formação de superfície por unidade de área a volume constante para sistemas poliméricos de baixa massa molar e polidisperso e subestimam o efeito da distribuição de massa molar na tensão superficial

  9. Producao de fitomassa e acumulo de nutrientes pela aveia-preta em funcao da aplicacao de calcario e gesso em superficie na implantacao do sistema plantio direto

    National Research Council Canada - National Science Library

    Peres Soratto, Rogerio; Costa Crusciol, Carlos Alexandre

    2008-01-01

    Com o objetivo de avaliar a influencia da aplicacao de calcario e gesso em superficie, na implantacao do sistema plantio direto, sobre a producao de materia seca e ciclagem de nutrientes pela aveia...

  10. Análise termográfica da temperatura superficial de telhas Thermographic analysis of the superficial temperature of roof tiles

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    Paulo G. de Abreu

    2011-11-01

    Full Text Available Neste trabalho objetivou-se realizar imagens termográficas da superfície de telhas visando avaliar sua temperatura superficial. Os tratamentos mensurados se constituíram de: T1 -Telha Coppo Venneto Ondulada Cinza; T2 - Telha Coppo Venneto Ondulada Marfim; T3 - Telha Plana Marfim; T4 - Telha Plana Cinza; T5 - Telha de Barro Colonial esmaltada; T6 - Telha Ondulada de Cimento Amianto e T7 - Telha de Barro Francesa. Cada unidade experimental foi composta de três telhas sobrepostas uma sobre a outra, exceto no tratamento de telha ondulada de cimento amianto. O delineamento experimental foi em blocos casualizados com três repetições. Os dados coletados em cada horário foram analisados por meio do modelo de medidas repetidas, utilizando-se o procedimento MIXED do SAS. As temperaturas da superfície inferior das telhas foram muito parecidas ao longo do dia. As telhas com coloração marfim obtiveram melhores valores de temperatura superior e inferior que as telhas com coloração cinza, nas respectivas categorias. A telha de barro colonial obteve maior temperatura da superfície inferior que as demais telhas.The objective of study was to get thermographic images from the surface of roof tiles to evaluate their tempertures. The evaluated treatments were: T1 - grey Coppo Venneto wave tiles ; T3 -Ivory-colored Coppo Venneto wave tiles; T2 - Ivory- colored, plain tile; T4 - plain, grey roof tile; T5 - glazed clay colonial tile; T6 - Asbestos wave tile T7 - French clay tiles . Each treatment was made up of three tiles which were piled one top of the other, except for the asbestos tiles. The experimental design was in randomized block with three repetitions. The data which were collected in each set time were analyzed through the repetitive measure model, using the MIXED procedure - SAS. The temperatures of the inferior surface of the tiles were very similar throughout the day. The ivory colored tiles had better superior and inferior temperature than

  11. Avaliação da rugosidade superficial de três resinas compostas submetidas a diferentes técnicas de polimento Evaluation of the superficial roughness of three composite resins submitted to different polishing techniques

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    Benícia Carolina Iaskieviscz RIBEIRO

    2001-09-01

    Full Text Available Neste estudo, avaliou-se a rugosidade superficial de resinas classificadas como compactáveis e uma híbrida tradicional comparando-se diferentes técnicas de polimento. Confeccionaram-se corpos-de-prova, que foram armazenados em água destilada por 24 horas e posteriormente submetidos a duas técnicas de tratamento superficial, em que foram empregados dois sistemas de discos de acabamento e polimento e pontas siliconizadas. Os resultados revelaram maior rugosidade superficial da resina AlertTM em relação a Solitaire® e Degufill Mineral®, não havendo diferenças estatisticamente significantes entre as últimas citadas. A rugosidade superficial das restaurações cujo polimento foi executado com as pontas Enhance® foi maior que o polimento obtido com os sistemas de discos, não havendo diferenças estatisticamente significante entre esses.In this study, the superficial roughness of two composite resins classified as condensable and of a traditional hybrid composite resin was analyzed after different polishing techniques. Test specimens were confected, immersed in distilled water for 24 hours and submitted to two different techniques of superficial treatment, in which disc systems (Sof-LexTM and Super Snap® and silicon tips (Enhance® were utilized. The results revealed the greater superficial roughness of AlertTM, when compared with Solitaire® and Degufill Mineral® - no statistically significant differences were observed between the last two materials. The superficial roughness of the specimens polished with Enhance® tips was greater than that of the specimens polished with discs and there were no statistically significant differences between both disc systems.

  12. Estimativas das componentes da radiacao solar incidente em superficies inclinadas baseadas na radiacao global horizontal

    National Research Council Canada - National Science Library

    Souza, Adilson P; Escobedo, Joao F; Dal Pai, Alexandre; Gomes, Eduardo N

    2011-01-01

    Foram avaliadas equacoes estatisticas de estimativas com agrupamentos de dados anuais e mensais e suas respectivas validacoes, para as componentes global, direta e difusa da radiacao solar incidente...

  13. APLICAÇÃO DE GEOTÊXTEIS BIODEGRADÁVEIS NA REDUÇÃO DO ESCOAMENTO SUPERFICIAL E CONTROLE DA EROSÃO SUPERFICIAL, UBERLÂNDIA/MG

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    José Fernando Rodrigues Bezerra

    2011-12-01

    Full Text Available Esse artigo aborda a utilização dos geotêxteis biodegradáveis no controle do escoamento superficial e perda de sedimentos. Para alcançar esse objetivo, uma estação experimental foi construída na Fazenda do Glória, no município de Uberlândia, Minas Gerais, a qual ficou funcionando no período de 18/11/2005 a 30/03/2006. Duas parcelas foram construídas, com as seguintes características: medidas de 1m x 10m, com uma calha, na parte inferior de cada parcela, para coletar água do escoamento superficial e sedimentos transportados. Uma das parcelas ficou sem cobertura vegetal durante todo o monitoramento e a outra recebeu a proteção dos geotêxteis (Buriti e sementes de gramínea. Durante os cinco meses de monitoramento, houve um total de 1.087,22mm de chuva. Na parcela sem cobertura vegetal, o total de escoamento superficial foi de 297,16L m-2, enquanto na parcela com os geotêxteis com gramíneas foi de 123,92L m-2, ou seja, mais da metade do total de escoamento da parcela sem proteção. Em termos da produção de sedimentos, a diferença foi ainda mais significativa; na parcela sem proteção dos geotêxteis, o total de solo erodido foi de 19.778,13g m-2, enquanto na outra parcela, o total foi de apenas 1.317,92g m-2. Esses resultados mostram que os geotêxteis construídos com fibra de Buriti podem ser bem eficientes no controle da erosão

  14. Influência da rugosidade gerada pelo tratamento superficial do substrato de concreto na aderência do revestimento de argamassa

    OpenAIRE

    Márcia Elisa Jacondino Pretto

    2007-01-01

    O maior uso do concreto de alta resistência, o uso de desmoldante e/ou o emprego de fôrmas plastificadas são fatores que cada vez mais contribuem para a superfície do concreto tornar-se lisa e de baixa porosidade superficial. Dessa forma, há prejuízo da absorção capilar que deve existir na camada superficial da base, de modo a permitir a penetração e a ancoragem dos produtos de hidratação da argamassa de revestimento no interior do substrato, garantindo a ancoragem mecânica. Neste sentido, a ...

  15. Produtividade e qualidade fisiológica de sementes de aveia preta em função da calagem superficial em plantio direto = Black oat yield and seed physiologic quality under superficial lime application in no tillage system

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    Tiago Roque Benetoli da Silva

    2006-04-01

    Full Text Available Com o objetivo de avaliar a produtividade e a qualidade fisiológica de sementes de aveia preta em razão da aplicação superficial de calcário em plantio direto, foi realizado um experimento em Botucatu, Estado de São Paulo, sob condições de sequeiro. O delineamento experimental foi o de blocos casualizados, com quatro repetições, em que os tratamentos foram constituídos por aplicação superficial de doses de calcário dolomítico (D0 = zero – sem aplicação de calcário; D1 = 1,8 t ha-1 – quantidade de calcário para elevar a saturação por bases a 54%; D2 = 3,6 t ha-1 – quantidade de calcário para elevar a saturação por bases a 68% e D3 = 5,4 t ha-1 – quantidade de calcário para elevar a saturação por bases a 80%, realizada em outubro de 2002. A cultura da aveia preta, cultivar Comum, foi semeada em abril de 2004, no segundo ano após a rotação milheto (primavera, feijão (verão e aveia preta (outono e inverno. Com os resultados obtidos, observou-se ganho de produtividade com a aplicação superficial de calcário, porém sem influenciar a qualidade fisiológica das sementes de aveia preta.The experiment carried out in Botucatu, São Paulo State, Brazil, in dry conditions, aiming to evaluate the yield and physiologic quality of black oat seeds, under superficial liming in no tillage system. A randomized complete block design was used, with four replications. The treatments were superficial application of different dolomitic lime rates (R0 = zero – without lime; R1 = 1.8 t ha-1 – lime to increase the base saturation at 54%; R2 = 3.6 t ha-1 – lime to increase the base saturation at 68%, and R3 = 5.4 t ha-1 – lime to increase the base saturation at 80%, in October 2002. The blackoat Common cultivar was sowed in April 2004, in second year, after the crop rotation of millet (spring, common bean (summer, black oat (autumn/winter. The results showed that the black oat physiologic quality seed was not affected by

  16. La dematerializzazione contemporanea delle superfici: da elementi di delimitazione a membrane di commutazione.

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    Cristina Mattiucci

    2008-06-01

    Full Text Available Quattro anni fa Paul Virilio scriveva "Città panico" definendo la città contemporanea come “la più grande catastrofe del ventesimo secolo”. La sua analisi fa riferimento alle conseguenze sia politiche che spaziali di una velocità del progresso tecnologico e scientifico che aveva raggiunto ritmi così elevati da vanificare il senso stesso di quella sovranità territoriale che dava consistenza e materia allo stato di diritto. Lo stato sarebbe ora sospeso in una sorta di alla massa e all’energia – della materia. In un processo di continua dematerializzazione della “assenza di gravità”cinematica dominata dall’informazione, quale terza dimensione – oltre sostanza urbana sotto l’effetto dei nuovi media, sostiene Virilio, la prevalenza della natura effimera dell’informazione sconvolge i nostri stessi parametri di percezione del mondo, presentato, piuttosto che rappresentato, attraverso le interfacce che accessoriano le nostre vite, secondo riferimenti alterati da una vera e propria guerra al reale ad opera della comunicazione audiovisiva.

  17. La dematerializzazione contemporanea delle superfici: da elementi di delimitazione a membrane di commutazione.

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    Cristina Mattiucci

    2008-06-01

    Full Text Available Quattro anni fa Paul Virilio scriveva "Città panico" definendo la città contemporanea come “la più grande catastrofe del ventesimo secolo”. La sua analisi fa riferimento alle conseguenze sia politiche che spaziali di una velocità del progresso tecnologico e scientifico che aveva raggiunto ritmi così elevati da vanificare il senso stesso di quella sovranità territoriale che dava consistenza e materia allo stato di diritto. Lo stato sarebbe ora sospeso in una sorta di alla massa e all’energia – della materia. In un processo di continua dematerializzazione della “assenza di gravità”cinematica dominata dall’informazione, quale terza dimensione – oltre sostanza urbana sotto l’effetto dei nuovi media, sostiene Virilio, la prevalenza della natura effimera dell’informazione sconvolge i nostri stessi parametri di percezione del mondo, presentato, piuttosto che rappresentato, attraverso le interfacce che accessoriano le nostre vite, secondo riferimenti alterati da una vera e propria guerra al reale ad opera della comunicazione audiovisiva.

  18. Resposta espectral de solos em razão do ângulo de visada, da umidade e da rugosidade superficial

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    ACCIOLY LUCIANO JOSÉ DE OLIVEIRA

    2000-01-01

    Full Text Available Este trabalho teve por objetivo avaliar as variações do fator de refletância bidirecional (FRB de três séries de solo (McAllister, Stronghold e Epitaph da microbacia experimental de Walnut Gulch (Arizona, EUA em razão do ângulo de visada, da rugosidade superficial e do teor de umidade. Foram consideradas as faixas espectrais do visível e do infravermelho próximo e médio presentes no sensor TM, e os resultados foram expressos em termos de FRB em relação à resposta no Nadir (FRB relativo. O anisotropismo variou de solo para solo e foi maior nas menores faixas espectrais, nos ângulos de visada maiores localizados na direção do retroespalhamento, nos ângulos solar-zenitais maiores, e na condição de solo seco. No solo Epitaph (único solo submetido ao estudo de rugosidade o anisotropismo foi também maior na superfície mais rugosa. Entretanto, uma melhor diferenciação entre as superfícies lisa e rugosa do solo Epitaph foi obtida na direção do espalhamento da energia refletida. Diferenças na escala e nos métodos de obtenção dos dados são apontadas como causas do realce do comportamento anisotrópico dos dados obtidos em condições de laboratório, em comparação com os dados de campo.

  19. Avaliação de um modelo para a estimativa da lâmina máxima de escoamento superficial

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    N. P. Griebeler

    2001-06-01

    Full Text Available A erosão hídrica é um dos principais processos associados à degradação ambiental, sendo a desagregação e o transporte das partículas do solo decorrentes, principalmente, da energia cinética proveniente do impacto das gotas da chuva sobre o solo e do escoamento superficial. Tendo em vista as perdas na produção agrícola resultantes da erosão hídrica, aliadas ao alto custo de adoção e manutenção de sistemas de conservação de solos, é fundamental que estes sejam instalados de maneira adequada. Visando otimizar o projeto e adotar sistemas de conservação de solos, Pruski e colaboradores desenvolveram um modelo com vistas em obter a lâmina máxima de escoamento superficial em condições típicas de áreas agrícolas. Neste trabalho, procedeu-se à avaliação deste modelo pela comparação dos valores calculados com os obtidos experimentalmente, tendo-se evidenciado pequenas diferenças percentuais e altos coeficientes de correlação entre os valores obtidos experimentalmente e os calculados. Esses valores indicam que o modelo avaliado mostra-se eficiente para prever a lâmina máxima de escoamento superficial.

  20. VARIAÇÃO DA UMIDADE SUPERFICIAL DO SOLO EM PARCELAS EXPERIMENTAIS COM USO DE GEOTÊXTEIS BIODEGRADÁVEIS, UBERLÂNDIA – MG

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    José Fernando Rodrigues Bezerra

    2012-08-01

    Full Text Available O objetivo desse trabalho foi analisar a eficiência dos geotêxteis confeccionados artesanalmente com a fibra de buriti, na manutenção da umidade superficial do solo de uma área degradada, em parcelas experimentais na Fazenda Experimental do Glória, município de Uberlândia - MG. O monitoramento foi realizado entre 18/11/2005 e 30/03/2006. Foram construídas duas parcelas com 10 m2 cada (1m x 10m, uma com solo exposto (SE e outra com geotêxteis e gramíneas (GE, com 12º de declividade, sendo utilizados 40 geotêxteis. Uma fotocomparação das características da superfície das parcelas no período monitorado foi obtida a partir de 17 fotografias do mesmo ponto, com posterior classificação supervisionada. A determinação da umidade superficial em seis diferentes pontos longitudinais ao longo das duas parcelas foi realizada com o auxílio do medidor de umidade de campo marca Theta Probe. Para melhor compreensão da dinâmica da umidade superficial nas duas parcelas, o monitoramento desse parâmetro foi dividido em três etapas: 1. Geotêxteis; 2. Geotêxteis e Gramíneas; e 3. Gramíneas. Em relação aos resultados obtidos, verificou-se a diferença entre os dados de umidade superficial nas parcelas com solo exposto e solo com geotêxteis, sendo que essa diferença foi mais elevada na segunda etapa (geotêxteis e gramíneas chegando a 4,9% de volume, enquanto que na primeira etapa (geotêxteis a diferença está em torno de 4,3%. A terceira etapa (gramíneas obteve o valor médio de 3,5%, o menor valor de variação durante o monitoramento. A densidade da cobertura de gramíneas pode ter influenciado nesse resultado, uma vez que ocupou toda a superfície do solo, exigindo maior intensidade das chuvas para alcançar a superfície do solo na parcela, onde foram medidos os dados. Entretanto, a média total dos dados, demonstrou que na parcela com os geotêxteis, a umidade (15,5% foi superior a do solo exposto (11,1%.

  1. Digital surface area assessment of broiler chickens Estimativa digital da área superficial de frangos de corte

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    Tadayuki Yanagi Júnior

    2011-06-01

    Full Text Available Surface area (SA of poultry is an important parameter for heat and mass transfer calculations. Optical approaches, such as the moiré technique (MT, are non-destructive, result in accuracy and speed gains, and preserve the object integrity. The objective of this research was to develop and validate a new protocol for estimating the surface area (SA of broiler chickens based on the MT. Sixty-six Ross breed broiler chickens (twenty-seven male, thirty-nine female, ages spanning all growth phases were used in this study. The dimensions (length, width and height and body mass of randomly selected broiler chickens were evaluated in the laboratory. Chickens were illuminated by a light source, and grids were projected onto the chickens to allow their shape to be determined and recorded. Next, the skin and feathers of the chickens were removed to allow SA to be determined by conventional means. These measurements were then used for calibration and validation. The MT for image analysis was a reliable means of evaluating the three-dimensional shape and SA of broiler chickens. This technique, which is neither invasive nor destructive, is a good alternative to the conventional destructive methods.A área superficial (AS de aves é um importante parâmetro nos cálculos de transferência de calor e massa. Aproximações ópticas, tal como a técnica de moiré (MT, são não destrutivas, o que resulta em ganhos de precisão e velocidade, e preservam a integridade do objeto. O objetivo desta pesquisa foi desenvolver e validar um novo protocolo para estimativa da AS de frangos de corte com base na MT. Sessenta e seis frangos da linhagem Ross (vinte e sete machos e trinta e nove fêmeas, com idades abrangendo toda a fase de criação foram usados neste estudo. As dimensões (comprimento, largura e altura e a massa corporal dos frangos de corte, aleatoriamente selecionados, foram avaliadas em laboratório. As aves foram iluminadas por uma fonte de luz, e grades

  2. Efeito da microabrasão e do clareamento dental na rugosidade superficial e microdureza do esmalte dental: estudo longitudinal ‘in situ’

    OpenAIRE

    FRANCO,Laura Molinar

    2014-01-01

    O objetivo deste trabalho in situ foi avaliar se a associação da microabrasão do esmalte com o clareamento dental causaria danos às propriedades do esmalte dental microabrasionado, através dos testes de rugosidade superficial, de microdureza do esmalte dental e de microscopia eletrônica por varredura. Os fatores em estudo foram: técnicas em 5 níveis: controle, microabrasão (Opalustre – Ultradent Products Inc. Utah, USA), clareamento dental (Opalescence Boost PF 38 % - Ultradent Prodcuts Inc. ...

  3. Histologia da camada superficial da lâmina própria da prega vocal ao se aplicar retalho pediculado de mucosa: estudo experimental em cães Vocal fold superficial layer of lamina propria histology after the position of mucosa pediculated flap: canine experimental study

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    David Greco Varela

    2005-06-01

    Full Text Available Os resultados conseguidos até hoje para a correção de sulcos vocais e lesões cicatriciais não são universalmente aceitos. A Técnica do Retalho Pediculado de Mucosa de Prega Vocal consiste na colocação de um retalho de mucosa de prega vocal com pedículo anterior na camada superficial da lâmina própria, abaixo da borda livre. OBJETIVO: Descrever os achados histológicos pós-operatórios ocorridos na camada superficial da lâmina própria de cães ao se aplicar a técnica em questão, tomando-se como parâmetro a variação dos colágenos total, tipo I, tipo III e número de núcleos celulares. FORMA DE ESTUDO: experimental. MATERIAL E MÉTODO: Foram utilizados 15 cães. Numa das pregas foi realizada a intervenção e a contralateral foi deixada como controle. Cada grupo de três cães foi sacrificado em 10, 30, 90, 180 e 360 dias após a cirurgia. As colorações utilizadas foram: H.E. e Syrius Red. RESULTADOS: Os níveis de colágeno total e tipo I apresentaram uma tendência a aumento nos grupos de intervenção nos 90º e 180º dias de pós-operatório, contudo só houve significância estatística no 180º dia (pMany techniques were applied to treat patients with sulcus vocalis and scarred vocal folds. Their results were not good enough. In the Technique of Vocal Fold Pediculated Mucosa Flap, an anterior pediculated flap of vocal fold is positioned on the superficial layer of the lamina propria, below the free margin. AIM: To describe histological postoperative findings on the superficial layer of lamina propria during the application of the technique Vocal Fold Pediculated Mucosa Flap. The following parameters were compared between tested and control groups: total, type I and type III collagen and number of cellular nucleus. STUDY DESIGN: experimental. MATERIAL AND METHOD: Fifteen dogs were used. One vocal fold was submitted to the intervention and the other was left as control. Each group of three dogs was sacrificed on 10, 30

  4. Comparação da anestesia geral e bloqueio do plexo cervical superficial em tireoidectomias parciais Comparison between general anesthesia and superficial cervical plexus block in partial thyroidectomies

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    Rui Celso Martins Mamede

    2008-02-01

    Full Text Available Tireoidectomia sob efeito de bloqueio do plexo cervical superficial (BPCS tem sofrido resistência. OBJETIVO: Comparar variáveis cirúrgicas e anestésicas, custos do tratamento e grau de satisfação de pacientes submetidos à hemitireoidectomia sob efeito de anestesia geral e BPCS. CASUÍSTICA E MÉTODOS: Foram 21 pacientes submetidos à anestesia geral (AG e outro tanto ao BPCS. Após sedação, no grupo com BPCS, usou-se marcaína com vasoconstritor, e quando necessário, lidocaína a 2% com vasoconstritor. Sedação intra-operatória com diazepam endovenoso e metoprolol para controle da PA e FC eram administradas quando necessário. Usou-se anestesia geral (AG segundo padronização do serviço. RESULTADOS: Foram significantes (pThyroidectomy under the effect of superficial cervical plexus block (SCPB has met resistance. AIM: to compare variables in patients submitted to hemithyroidectomy under the effect of general anesthesia (GA and SCPB. CASE REPORT AND METHODS: GA was used in 21 patients, and SCPB was used in another 21 patients. Following sedation, marcaine 0.5% with vasoconstrictor was used in the SCPB group. Intraoperative sedation with diazepam and metoprolol to control arterial pressure and cardiac frequency was given as needed. GA followed the standard method in the unit. RESULTS: We found significant results (p<0.05, Student’s t-test for surgery time (GA - 111.4 min; SCPB - 125.5 min, anesthesia time (GA - 154.1 min; SCPB - 488.6 min, time in the surgery room (GA - 15 min; SCPB - 1 min, treatment costs (GA - R$203.2; SCPB - R$87.4, presence of bradycardia (GA - 0; SCPB - 23.8% and laryngotracheal injury (GA - 51; SCPB - 0 %. We also found the following non-significant results: hospitalization time (GA - 17.3; SCPB - 15.1 hours; bleeding volume (GA - 41,9 g; SCPB - 47.6 g, size of the operative specimen (GA - 52.1 cm3; SCPB - 93.69 cm3 and patient satisfaction level (GA - 3.8; SCPB - 3.9. CONCLUSION: Although the incidence of

  5. Qualidade da água do escoamento superficial urbano: revisão visando o uso local.

    OpenAIRE

    Maria Carolina Rivoir Vivacqua

    2005-01-01

    O presente trabalho, dissertação visando a obtenção do titulo de mestrado em engenharia na Escola Politécnica da Universidade de São Paulo, é fruto de pesquisa bibliográfica de dados secundários de pesquisa de campo sobre qualidade de águas de chuva após os primeiros escoamentos superficiais. A pesquisa procurou propor e discutir o conceito de uso da água de escoamentos superficiais próximos, como uma das ferramentas para o desenvolvimento e implantação de empreendimentos e programas de geren...

  6. Avaliação da classificação histológica da endometriose observada em implantes de mulheres portadoras de endometriose pélvica superficial e profunda Evaluation of the endometriosis histological classification observed in specimens of women affected by superficial and deeply infiltrating pelvic endometriosis

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    Gil Kamergorodsky

    2007-11-01

    Full Text Available OBJETIVO: avaliar o padrão de diferenciação histológica em lesões de peritônio superficial e lesões de endometriose pélvica profunda (EPP, localizadas em ligamentos úteros-sacros, intestino (reto e sigmóide e septo retovaginal. MÉTODOS: estudo prospectivo não randomizado, que incluiu 139 pacientes. Foram obtidas 234 biópsias (179 com EPP - Grupo Profundas - e 55 com endometriose superficial - Grupo Superficiais. Das 179 lesões de EPP (Grupo Profundas, 15 foram obtidas do septo retovaginal, 72 de nódulos do reto e sigmóide e 92 de ligamentos útero-sacrais. As biópsias foram classificadas em glandulares bem diferenciadas, glandulares indiferenciadas, glandulares mistas e estromal, com base em uma classificação morfológica específica. RESULTADOS: no Grupo Profundas, 33,5% das biópsias apresentaram padrão glandular indiferenciado e 46,9%, padrão glandular misto. No Grupo Superficiais, houve predominância do padrão glandular diferenciado (41,8%. Comparando especificamente as diferentes localizações das biópsias de lesão de EPP (Grupo Profundas, notou-se que o padrão glandular misto foi predominante nos nódulos intestinais (61,1%. CONCLUSÕES: foi possível concluir que há predomínio de endometriose glandular bem diferenciada na endometriose superficial, predomínio da doença mista e indiferenciada na EPP e, especificamente estudando a endometriose de reto e sigmóide, houve predomínio da endometriose glandular mista.PURPOSE: to evaluate the histological differentiation pattern in superficial peritoneum lesions and in deeply infiltrating endometriosis (DIE in utero-sacral ligament, bowel (rectum and sigmoid colon and rectovaginal septum. METHODS: this prospective non-randomized study included 139 patients. Of the total, 234 biopsies were obtained (179 with DIE - Deeply Group - and 55 superficial endometriosis - Superficial Group. From the 179 DIE lesions (Depply Group, 15 were obtained from rectovaginal septum, 72

  7. Dinâmica da calagem superficial em um latossolo vermelho distrófico Dynamics of surface liming in a typic haplorthox

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    Jonez Fidalski

    2005-04-01

    Full Text Available As alterações químicas do solo após a calagem superficial variam de acordo com o tempo e precipitações pluviais. Com o objetivo de avaliar as alterações das características químicas de um Latossolo Vermelho distrófico textura média de camada superficial arenosa, foi instalado um experimento em blocos ao acaso, com quatro doses de calcário dolomítico (0; 2,4; 4,8 e 7,2 t ha-1 e três repetições, em 1999, no município de Alto Paraná, região noroeste do Paraná. O calcário foi distribuído sobre resíduos de Brachiaria decumbens nas entrelinhas de um pomar de laranja em formação. As parcelas experimentais foram constituídas de 310 m², compostas por 15 plantas em três linhas com cinco plantas cada. As amostras de solo foram coletadas nas entrelinhas das três plantas centrais da parcela nas camadas de 0-0,05, 0,05-0,10, 0,10-0,20, 0,20-0,40 e 0,40-0,60 m de profundidade, aos 4, 12, 18, 24, 31 e 37 meses após a distribuição do calcário, correspondendo alternadamente às épocas de amostragens de solo em períodos de alta e baixa precipitação pluvial. As análises de variância foram efetuadas por meio do modelo matemático de blocos ao acaso no esquema de parcela subsubdividida com medidas repetidas no tempo (ano, época do ano em função da precipitação pluvial e doses de calcário, utilizadas nas análises de regressões pela técnica dos polinômios ortogonais. Os resultados mostraram que a máxima alteração das características químicas do solo foi obtida a partir de doses de calcário superiores ao dobro da necessidade de calcário, convencionalmente determinada pelo método de saturação por bases para elevá-la a 70 %, na profundidade de 0,20 m. A amostragem de solo após o período de maior precipitação pluvial foi indispensável ao ajuste dos dados da saturação por bases na camada de 0-0,05 m. As alterações dos teores de Ca2+ limitaram-se à camada de 0-0,10 m, enquanto os teores de Mg2+ aumentaram

  8. Avaliação da dureza superficial de cimentos de ionômero de vidro reforçados por nanotubos de carbono

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    Mayra Manoella Perez Reis dos Santos

    Full Text Available Introdução Os cimentos de ionômero de vidro (CIV são materiais com baixa resistência à tração e ao cisalhamento, mostrando-se, portanto, contraindicados para áreas sujeitas às grandes cargas oclusais. Objetivo Avaliar o efeito da incorporação de nanotubos de carbono em CIV por meio de dureza superficial Knoop. Material e método Foram confeccionados 48 espécimes, divididos em quatro grupos, de acordo com o tipo de CIV (n=12 – convencional ou de alta viscosidade, incorporados ou não de nanotubos de carbono (NC a 2%: (A Vidrion R; (B Vidrion R + NC 2%; (C Vitro Molar, e (D Vitro Molar + NC 2%. Os espécimes foram preparados utilizando-se seringa Centrix, para inserção do material em moldes plásticos, e armazenados em água deionizada por 24 horas. Após polimento, realizou-se o teste de dureza superficial com penetrador do tipo Knoop. Foram realizadas cinco endentações em cada espécime, distanciadas entre si em 100 µm. Resultado Os valores médios de dureza foram 58,96 ± 8,29 (A, 34,81 ± 5,78 (B, 60,84 ± 4,91 (C e 41,97 ± 5,45 (D. O teste ANOVA detectou diferenças estatisticamente significantes para os dois parâmetros estudados, tipo de material (p=0,016 e inclusão de NC (p0,05, enquanto os grupos B e D apresentaram diferenças significativas (p<0,05. Ao comparar o fator incorporação ou não de NC, observou-se diferença significativa entre os grupos A e B, e entre os grupos C e D (p<0,05. Conclusão A incorporação de nanotubos de carbono influenciou negativamente os valores de dureza superficial para os dois tipos de CIV utilizados.

  9. Broiler surface temperature distribution of 42 day old chickens Distribuição da temperatura superficial de frangos de corte com 42 dias de idade

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    Irenilza de Alencar Nääs

    2010-10-01

    Full Text Available Broiler chickens in Brazil are generally reared from 1 to 42 days when they are exposed to procedures such as fasting, harvesting, crating and transport to slaughter. Maintaining homeostasis is of great importance for broiler survival under harsh environment especially prior to slaughter. Heat loss varies in the distinct parts of the body during the growth period, and it is related to the air temperature of the environment and to the amount of feather covering. This research aimed to study the surface temperature distribution using infrared thermographic image processing to characterize 42 day old broiler chicken surface temperature prior to slaughter. Broilers were reared for 42 days and prior to harvest and transport to slaughter the infrared surface temperature was recorded along the day. Data from the thermograms taken in feather and featherless regions were compared during the 42nd day of growth. High correlation between featherless regions and air temperature was found showing that these areas respond fast to changes in the rearing environment. Two functions were developed for predicting both surface temperature for featherless and feather covered areas of the broiler body parts.No Brasil frangos de corte são normalmente alojados de 1 até 42 dias, quando são expostos a procedimentos como: jejum, apanha, colocação em caixas e transporte até o abate. Manter a homeostase do corpo é de grande importância para a sobrevivência de frangos de corte sob ambiente quente, especialmente na 7ª semana de crescimento. A perda de calor varia nas partes do corpo e está relacionada à temperatura do ar e à cobertura de penas. Avaliou-se a distribuição da temperatura superficial usando o processamento de imagens de câmera termográfica infravermelho, para caracterizar a temperatura superficial de frangos de corte de 42 dias de idade, no período anterior à apanha para o abate. Os frangos foram alojados de 1 a 42 dias e, antes de serem

  10. Modelo de escoamento superficial em bacia experimental da Reserva Florestal Adolpho Ducke Surface runoff model in the Reserva Florestal Adolpho Ducke experimental watershed

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    Arí de Oliveira Marques Filho

    2009-01-01

    Full Text Available Neste estudo, a experimentação e a modelagem hidrológica de eventos de precipitação transformada em escoamento superficial em sistemas naturais de floresta são investigadas, contemplando os seguintes tratamentos: construção de algoritmo computacional iterativo de otimização para a identificação do hidrograma unitário médio (função de transferência chuva-descarga da bacia e para o cálculo das precipitações efetivas adequadas à cada evento chuva-escoamento; aplicação da metodologia à bacia hidrográfica do igarapé Bolívia, situada no interior da Reserva Florestal Adolpho Ducke; análise e interpretação do algoritmo criado, enfocando a sua convergência e o significado dos resultados desse processo de otimização; e comparação com outros estudos em pequenas bacias da Amazônia Central. O período de medidas de chuva e de vazões estende-se de julho de 2004 a setembro de 2006, incluindo a fase de preparação da curva-chave do igarapé Bolívia e a formação de um conjunto amplo e diversificado de eventos de chuva e de escoamento no curso d'água.In this study, experimentation and hydrologic modeling of rainfall events transformed into runoff in natural forest systems, are investigated, including the following treatments: construction of an iterative optimization computational algorithm to identify the average unity hydrograph (rain-discharge transfer function of the watershed, and to compute the effective rainfalls adequate to each discharge-rainfall event; applying the methodology to the Igarapé Bolívia watershed, which is located inside the Adolpho Ducke Forest Reserve; analysis and interpretation of the established algorithm, focusing on its convergence and on the significance of the results of this optimization process; and comparison with other studies in small watersheds of Central Amazonia. Rainfall and runoff measurements were made from July 2004 to September 2006, including the preparation phase of the

  11. AVALIAÇÃO DA RUGOSIDADE SUPERFICIAL COM TÉCNICAS DE MOLDAGEM DE SILICONES DE CONDENSAÇÃO SOBRE A INFLUÊNCIA DA DESINFECÇÃO QUÍMICA

    OpenAIRE

    GOIATO, Marcelo Coelho; Ribeiro, Paula do Prado [UNESP; Filho, Humberto Gennari; Assunção, Wirley Gonçalves; dos Santos, Daniela Micheline [UNESP; Pesqueira, Aldiéres Alves

    2016-01-01

    A proposta deste estudo foi avaliar a rugosidade superficial de duas técnicas de moldagem com dois silicones de condensação (Zetaplus – Zhermack e Clonage – DFL) densos e fluídos sobre a influência da desinfecçãoquímica com solução à base de clorexidina 2% (aspersão por 5 minutos). Foram confeccionados 56 corpos de prova que foram divididos em 8 grupos, sendo que metade foi submetido à desinfecção com solução a base de clorexidina 2% antes das leituras do teste de dureza. Os corpos de prova f...

  12. Canine lacrimal and third eyelid superficial glands’ macroscopic and morphometric characteristics Aspectos macroscópicos e morfométricos das glândulas lacrimal e superficial da terceira pálpebra de cães (Canis familiares; LINNAEUS, 1758

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    Vânia Pais Cabral

    2005-04-01

    Full Text Available The lacrimal and third eyelid superficial glands produce the aqueous component of the preocular tear film. In this research, morphologic and morphometric assessments of the parenchyma and stroma of both lacrimal glands of healthy adult mongrel dogs were performed. Both lacrimal and third eyelid glands of fourteen dogs were collected, summing fifty-six samples. The macroscopic and morphometric data were statistically analyzed, according to the glandular type (lacrimal and third eyelid superficial glands and sexual dimorphism (male or female. The lacrimal glands were significantly larger and longer than the superficial glands of the third eyelid. Expressive morphometric differences of interlobular duct, lymphocytic infiltration, interlobular vessels and secretory parenchyma between the two glandular types were encountered. The lacrimal glands from the male subjects were significantly larger than those from female ones, as well as the superficial glands of the third eyelid were thicker. The higher lymphocyte infiltration and poorer secretor parenchyma in female dogs may be one of the reasons for the higher incidence of keratoconjunctiviti sicca (KCS in such canine population.As glândulas lacrimal e superficial da terceira pálpebra atuam produzindo o componente aquoso do filme lacrimal. Nesta pesquisa, estudaram-se aspectos morfológicos e morfométricos do parênquima e do estroma de ambas as glândulas em cães mestiços, hígidos, adultos (machos ou fêmeas. As glândulas lacrimal e superficial da terceira pálpebra de 14 cães foram colhidas, totalizando 56 amostras. Foram estudadas, à estatística, as variáveis macroscópicas e morfométricas, comparando-as quanto ao tipo glandular (lacrimal e superficial da terceira pálpebra e quanto ao dimorfismo sexual (macho e fêmea. Às glândulas lacrimais foram significativamente maiores comparativamente as superficiais da terceira pálpebra. Foram evidenciados diferenças morfom

  13. Estimating peach palm fruit surface area using allometric relationships Estimativa da área superficial de frutos de pupunheira por relações alométricas

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    Marilene Leão Alves Bovi

    2002-12-01

    rea superficial de frutos de pupunheira (Bactris gasipaes Kunth. Foram colhidos cinco frutos por planta, em diferentes estádios de maturação, de 18 plantas matrizes. A metodologia baseada em digitalização e edição de imagens foi adequada ao presente estudo e comparada com o método gravimétrico. Com base em análise de regressão e ajuste de curvas, os dois métodos foram comparados, determinando-se ainda relações alométricas entre área superficial e peso e dimensões do fruto. O método de digitalização de imagens mostrou-se duas vezes mais rápido que o gravimétrico, obtendo-se bom ajuste para todos os pares testados. Para a maioria das relações estabelecidas o modelo de melhor ajuste foi a potência da variável independente (Y = ax b. No entanto, pela simplicidade, recomenda-se também o modelo linear. Para a variável (x obtida pela multiplicação do comprimento e largura máxima do fruto, as equações que permitiram estimar a área superficial (Y foram: Y = 2,077 x 1,189 (R² = 94,8%; e Y = - 6,261 + 3,961 x (R² = 94,5%. As características necessárias para a estimativa são de fácil mensuração e apresentam caráter não destrutivo. Essas equações requerem validação quando usadas em outras populações ou raças.

  14. Área superficial específica, porosidade da fração argila e adsorção de fósforo em dois latossolos vermelhos

    OpenAIRE

    Cessa,Raphael Maia Aveiro; Celi, Luisella; Vitorino,Antonio Carlos Tadeu; Novelino,José Oscar; Barberis,Elisabetta

    2009-01-01

    A porosidade da fração argila é muito importante para entendimento dos fenômenos físico-químicos que estão relacionados com a área superficial específica das partículas sólidas. Por meio de isotermas de adsorção e dessorção com N2, avaliaram-se a área superficial específica (S BET) e a porosidade das frações argila de Latossolos Vermelhos do Estado de Mato Grosso do Sul, sendo um distroférrico (LVdf) e outro distrófico (LVd), além de caulinita natural (KGa2), goethita (Gt) e hematita (Hm) sin...

  15. Immunoelectron microscopy study of superficial skin nerves in drug-induced acute urticaria Estudo de microscopia imunoeletrônica dos nervos superficiais da pele na urticária aguda induzida por medicamentos

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    Paulo Ricardo Criado

    2012-06-01

    Full Text Available BACKGROUND: Few studies have evaluated the ultrastructure of the superficial skin nerves in urticaria. OBJECTIVE: The objective of this study was to describe findings in superficial skin nerves in cases of drug-induced acute urticaria. METHODS: Seven patients with drug-induced acute urticaria were included in the study. Skin biopsies were obtained from the urticarial lesion and from the apparently normal skin. The 14 fragments collected were processed for immunogold electron microscopy using single stains for antitryptase and anti-FXIIIa antibodies, as well as double immunogold labeling for both. RESULTS: Some sections showed mast cells in the process of degranulation. Following double immunogold staining, 10 nm (FXIIIa and 15 nm (Tryptase gold particles were found together throughout the granules in mast cells, indicating that tryptase and FXIIIa are located inside each one of the granules of these cells. Interestingly, we found strong evidence of the presence of tryptase and factor XIIIa in the superficial skin nerves of these patients, both in cases of urticarial lesions (wheals and in the apparently normal skin. CONCLUSIONS: Tryptase and FXIIIa are present in the superficial nerves of the skin in drug-induced acute urticaria. This is the first report of tryptase and FXIIIa expression in the superficial skin nerves of patients with urticaria. Tryptase may be participating in neural activation in these patients, while FXIIIa may be present in the nerves to guarantee the functional integrity of structures.FUNDAMENTOS: Poucos autores têm estudado a ultraestrutura dos nervos superficiais na urticária. OBJETIVO: Descrever os achados nos nervos cutâneos superficiais em casos de urticária aguda induzida por medicamentos. MÉTODOS: Sete pacientes com urticária aguda induzida por medicamentos foram incluídos no estudo. Foram obtidas biopsias da pele da lesão urticariforme e da pele aparentemente normal. Os 14 fragmentos coletados foram

  16. Avaliação da microdureza superficial do esmalte e da dentina de dentes bovinos e humanos: permanentes e decíduos = Surface microhardness evaluation of enamel and dentin in bovine and human teeth: permanent and deciduous

    Directory of Open Access Journals (Sweden)

    Donassollo, Tiago Aurélio

    2007-01-01

    Full Text Available O objetivo desse estudo foi testar a microdureza superficial do esmalte (E e da dentina (D em molares humanos decíduos (grupo d, molares humanos permanentes (grupo p e incisivos bovinos (grupo b. Foram selecionados 4 espécimes de cada tipo de dente os quais foram mantidos em solução salina até o teste. Os espécimes foram incluídos em uma matriz com resina e polidos com papel metalográfico (até granulação 600 para planificar o esmalte. O teste de dureza Knoop foi realizado em um microdurômetro com carga de 200 g, sendo realizadas 5 leituras (10 s de endentação por dente. Os espécimes foram novamente submetidos ao polimento para expor dentina (próxima ao LAD, sendo novas leituras realizadas. Os dados foram submetidos à análise estatística (testes ANOVA e Tukey. Os valores médios de dureza (kg/mm2 e desvio padrão foram os seguintes: Ed 338 ± 30,1; Ep 341 ± 32,8; Eb 326 ± 25,5; Dd 104 ± 9,7; Dp 93,3 ± 8,7; Db 91,2 ± 7,3. A dureza do esmalte foi maior que a da dentina nos três tipos de dentes (p < 0,001. Considerando o tipo de substrato, não houve diferenças estatísticas, ou seja, os valores de dureza para esmalte ou dentina foram similares para dentes humanos decíduos e permanentes e dentes bovinos

  17. Recanalização da artéria femoral superficial com stents Zilver: técnica padronizada e análise retrospectiva de 3 anos Superficial femoral artery recanalization with Zilver stents: standard technique and 3-year retrospective analysis

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    Marcelo Ferreira

    2006-12-01

    Full Text Available OBJETIVOS: Descrever a técnica de recanalização endovascular da artéria femoral superficial e fazer uma análise retrospectiva dos 3 primeiros anos da técnica. MÉTODOS: Análise retrospectiva dos pacientes tratados entre 2001 e 2004, visando obter as taxas de perviedade das recanalizações. A amostra considerada neste estudo consta de 79 artérias femorais superficiais recanalizadas em 61 pacientes, nos quais foram utilizados exclusivamente a técnica descrita e o mesmo modelo de stent de nitinol auto-expansível (Zilver, COOK. RESULTADOS: Dos 61 pacientes, 8% possuíam isquemia crítica de membro inferior e 92% apresentavam claudicação incapacitante refratária ao tratamento clínico. A melhora clínica foi observada e referida pelos pacientes numa relação direta à perviedade das recanalizações. A análise estatística demonstrou taxas acumuladas de perviedade primária assistida de 98, 91 e 84% em 12, 24 e 37 meses, respectivamente. As taxas de perviedade, entendida como fluxo continuado nas recanalizações, foram de 96, 93 e 93% em 12, 24 e 37 meses, respectivamente. CONCLUSÕES: Consideramos a técnica da recanalização da artéria femoral superficial um método ao mesmo tempo pouco invasivo, com reduzidas complicações e de consideráveis taxas de sucesso anatômico e perviedade, que, em conjunto, são capazes de proporcionar satisfação e qualidade de vida aos pacientes portadores de doença arterial obstrutiva periférica.OBJECTIVES: To describe the endovascular recanalization technique of the superficial femoral artery and perform a 3-year retrospective analysis of the technique. METHODS: Retrospective analysis of the patients treated between 2001 and 2004, with the aim of obtaining the patency rates of the recanalizations. The sample consisted of 79 recanalized superficial femoral arteries in 61 patients, exclusively using the described technique and the same nitinol self-expanding stent model (Zilver, COOK. RESULTS

  18. Avaliação da influência dos tipos de tratamento superficial da porcelana glazeada na colagem de braquetes ortodônticos Evaluation of the influence of porcelain conditioning techniques in orthodontic brackets bonding

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    Camila Belo Falcão

    2009-06-01

    Full Text Available OBJETIVO: o objetivo deste trabalho foi avaliar a influência do tipo de tratamento superficial da porcelana na resistência adesiva da colagem de braquetes ortodônticos e o modo de fratura após a descolagem. METODOLOGIA:foram confeccionados 80 corpos-de-prova de porcelana, divididos em quatro grupos (n = 18 de acordo com os diferentes tratamentos de superfície: (G1 ponta diamantada; (G2 ponta diamantada e silano; (G3 ácido hidrofluorídrico e (G4 ácido hidrofluorídrico e silano. Após o preparo das superfícies, braquetes Edgewise (Morelli foram colados com resina (Transbond XT, 3M e submetidos ao teste de cisalhamento. Os resultados foram avaliados estatisticamente pelo teste de Kruskal-Wallis. RESULTADO: o grupo G1 apresentou uma média de resistência de 3,35, o G2 3,97, o G3 2,56 e o G4 3,10. CONCLUSÃO: constatou-se que não houve diferença estatisticamente significativa na resistência adesiva do braquete entre os tipos de tratamentos estudados (p > 0,05 e os modos de fratura ocorreram, em sua grande maioria, na interface braquete/resina. Este estudo indica que todos os tipos de tratamentos apresentados são eficientes para a colagem.AIM: The aim of this study was to evaluate the influence of various porcelain surface treatments on the strength of orthodontic brackets bonded to porcelain and the fracture mode after debonding. METHODS: Eighty samples of porcelain were randomly divided into four groups according to their surface preparation, as follows: (G1 diamond bur, (G2 diamond bur with silane, (G3 hydrofluoridic acid and (G4 hydrofluoridic acid with silane. After surface treatment the Edgewise brackets (Morelli were bonded with resin (Transbond XT, 3M and sheared off. The Kruskal-Wallis statistical test were applied on the data. RESULTS: There were no statistically significant differences in bond strength between the groups (p > 0.05 and the fracture mode in most of the porcelain occurred in the composite/bracket interface. The

  19. Crisotilas naturais brasileiras : ativação da superficie e aplicação na imobilização de biocatalizadores

    OpenAIRE

    Osvaldo Parizotto Junior

    1989-01-01

    Resumo: Crisotila é um argilo-mineral de estrutura lamelar serpentinizada em fibrilas cilíndrical, de diâmetro externo de ordem de 50 nm, e potencial zeta positivo. A crisotila natural consiste de feixes destas fibrilas, mais ou menos densamente empacotadas, contendo quantidades variáveis de impurezas diversas. As caracteristicas das fibrilas indicam que se trata de um material com alta energia livre superficial; entretanto na forma natural, sua atividade é baixa. A crisotila natural brasilei...

  20. Superficial soil erosion assessment in agricultural land and bare land using {sup 7}Be fallout; Estudo da redistribuicao de solo superficial em areas cultivadas e nao cultivadas utilizando o fallout do {sup 7}Be

    Energy Technology Data Exchange (ETDEWEB)

    Marestoni, Luiz Diego

    2007-02-15

    Geologic and hydrologic phenomenon monitoring presents great environmental and financial interest and several radioisotopes, natural and artificial, have been used for this purpose. The more used are {sup 137}Cs, {sup 210}Pb not supported and {sup 7}Be. In the present work, {sup 7}Be was used to determine the soil erosion in three areas: one with soy ploughed at the direction of the slope, one with it perpendicular to the slope and one in an area with bare soil. {sup 7}Be is a cosmogenic radionuclide, with half-life of 53.3 days, produced by spallation of oxygen and nitrogen by cosmic rays in the troposphere and stratosphere. {sup 7}Be deposition occurs by dry and wet deposition, although wet deposition contributed by 95%. This can be verified through the measures of the {sup 7}Be inventory correlated with the precipitation, which resulted in a good linear adjustment. The experimental set up consisted of two HPGe detectors: one with 66% of relative efficiency and one with 10% of relative efficiency, both detectors coupled to standard gamma ray spectrometry nuclear electronic chain. Soil samples were packed in 1 liter Marinelli beckers. Sampling was accomplished until the depth where {sup 7}Be was present and it was possible to verify that its penetration in the soils could be very well adjusted by an exponential type function. The maximum beryllium-7 penetration in the bare soil without sign of soil erosion was 3 cm, that is, beryllium-7 is a useful tool as tracer for superficial soil erosion determination. The constant of mass relaxation h{sub 0} was determined as 4.71 {+-} 0.36, result that is in agreement with other works in the international literature. It was verified that when the soy is ploughed perpendicular to the slope, the soil redistribution rate is smaller, resulting in economic advantage. The bare soil is very exposed to the erosion, because does not exist any barrier to contain the soil that flows at the direction of the slope, such fact was verified

  1. Spatial distribution of top soil water content in an experimental catchment of Southeast Brazil Distribuição espacial da umidade superficial do solo em uma bacia hidrográfica experimental do Sudeste do Brasil

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    Carlos Rogério de Mello

    2011-06-01

    Full Text Available Soil water content is essential to understand the hydrological cycle. It controls the surface runoff generation, water infiltration, soil evaporation and plant transpiration. This work aims to analyze the spatial distribution of top soil water content and to characterize the spatial mean and standard deviation of top soil water content over time in an experimental catchment located in the Mantiqueira Range region, state of Minas Gerais, Brazil. Measurements of top soil water content were carried out every 15 days, between May/2007 and May/2008. Using time-domain reflectometry (TDR equipment, 69 points were sampled in the top 0.2 m of the soil profile. Geostatistical procedures were applied in all steps of the study. First, the spatial continuity was evaluated, and the experimental semi-variogram was modeled. For the development of top soil water content maps over time a co-kriging procedure was used having the slope as a secondary variable. Rainfall regime controlled the top soil water content during the wet season. Land use was also another fundamental local factor. The spatial standard deviation had low values under dry conditions, and high values under wet conditions. Thus, more variability occurs under wet conditions.A umidade do solo é essencial para o entendimento do ciclo hidrológico, uma vez que controla a geração do escoamento superficial, infiltração de água no solo, evaporação do solo e transpiração das plantas. Este trabalho objetivou analisar os padrões espaciais da umidade superficial do solo e caracterizar a média e o desvio padrão espaciais da mesma ao longo do tempo em uma bacia hidrográfica experimental localizada na Serra da Mantiqueira, MG. As medidas da umidade superficial do solo foram conduzidas a cada 15 dias, entre Maio/2007 e Maio/2008, usando um equipamento TDR portátil, em 69 pontos amostrados na camada de 0-20 cm. Procedimentos geoestatísticos foram aplicados em todas as etapas do trabalho

  2. Influência da crosta superficial nas taxas de infiltração de água medidas com simulador de chuva e anéis concêntricos

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    R. Levien

    2000-09-01

    Full Text Available A taxa de infiltração de água no solo, conjuntamente com a taxa de chuva, determina a taxa de enxurrada, constituindo medida importante para a previsão de erosão e estudos de conservação do solo. Pode-se medir a taxa de infiltração por meio de um infiltrômetro de cilindros concêntricos (CC ou de um simulador de chuva (SC. A utilização do CC requer menos trabalho do que o SC, mas os resultados obtidos com o CC comumente estão em desacordo com as taxas de infiltração que ocorrem em situações de chuva natural, possivelmente por causa da formação de uma crosta superficial sob chuva. A formação dessa crosta procede tanto de fatores independentes do manejo do solo, como a intensidade da chuva e a textura do solo, quanto de fatores dependentes do manejo, principalmente a resistência ao cisalhamento e a cobertura vegetal. Em situações favoráveis à ocorrência de formação de crosta, espera-se que taxas de infiltração medidas com o CC superestimem as taxas reais durante uma chuva. Para verificar a correlação entre o manejo do solo e a razão das taxas de infiltração obtidas com CC e SC, essas taxas foram medidas por ambos os métodos em dois Podzólicos (Ultissolos da região sul do Brasil. Os tratamentos diferiram com a cobertura vegetal e com a existência de crosta superficial. Medidas da taxa de infiltração com SC foram realizadas com um simulador de chuva com bicos aspersores Veejet 80100, em parcelas de 3,5 x 11,0 m, gerando chuva de intensidade de 64,2 mm h-1, durante 100 a 150 minutos. As parcelas foram delimitadas com chapas de metal e a enxurrada foi coletada no lado inferior por três segundos a cada três minutos. O CC consistiu de dois cilindros (diâmetros de 0,30 e 0,60 m, cravados no solo até 0,10 m pouco antes da determinação com o SC. A área dentro dos anéis foi inundada e as taxas de infiltração foram registradas dentro do anel interior, em intervalos de tempo regulares, com três repeti

  3. Relações da rugosidade superficial do solo com o volume de chuva e com a estabilidade de agregados em água Relations of soil surface roughness with the rainfall volume and water aggregate stability

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    Ildegardis Bertol

    2006-06-01

    Full Text Available A rugosidade superficial do solo é afetada, dentre outros fatores, pelo tipo de preparo, volume de chuva e estabilidade dos agregados estruturais diante da ação destrutiva da água. Em um Inceptisol, num experimento de erosão sob chuva natural realizado há 15 anos, no Sul da região do Planalto Catarinense, Brasil, avaliou-se a rugosidade superficial, a qual foi expressa por meio dos índices: rugosidade (RR, tortuosidade (T e diferença de elevação limite (LD, no cultivo do milho, em 2003, e no cultivo da aveia, em 2004, em cujos períodos experimentais precipitaram 229 e 350 mm de chuva, respectivamente. Além disso, em 2004, entre os dois cultivos, avaliou-se a estabilidade dos agregados em água, expressa pelo diâmetro médio ponderado (DMP e diâmetro médio geométrico (DMG dos agregados. Os tratamentos de sistemas de manejo do solo foram: preparo convencional (PC com uma araç��o + duas gradagens; cultivo mínimo (CM com uma escarificação + uma gradagem, e semeadura direta (SD, ambos cultivados com milho e aveia, além de um tratamento adicional sem cultivo do solo (SC em preparo convencional com uma aração + duas gradagens. A rugosidade foi avaliada em cinco oportunidades no cultivo do milho e em quatro da aveia, sendo a primeira avaliação imediatamente após o preparo do solo, e as demais, em intervalos sucessivos de 15 dias. A rugosidade inicial do solo foi alta e diminuiu com o aumento do volume das chuvas nos tratamentos SC, PC e CM, enquanto, na SD, a rugosidade foi alta apenas no cultivo da aveia e apresentou variação muito pequena com o aumento da chuva. O SC apresentou a maior redução da rugosidade ao acaso, enquanto a menor redução ocorreu na SD. A rugosidade superficial foi reduzida da condição original, na qual não se retiraram os efeitos da pendente e das marcas do preparo do solo, para a condição ao acaso, na qual esses efeitos foram retirados. A rugosidade superficial ao acaso relacionou

  4. Teste de força de preensão manual: estudo da fadiga mioelétrica do flexor radial do carpo e flexor superficial dos dedos

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    Marco Tulio Baptista

    2013-09-01

    Full Text Available Um protocolo de força de preensão manual (FPM em degraus de intensidade foi empregado para estudo da fadiga dos músculos flexor radial do carpo (FRC e flexor superficial dos dedos (FSD por meio do registro da força de preensão sustentada. Foi feita a análise do sinal eletromiográfico de superfície destes músculos no domínio do tempo e da frequência de 2kHz. Foi utilizado um dinamômetro eletrônico e um conversor analógico-digital de 16 bits. Participaram deste estudo 12 indivíduos saudáveis, ativos e destros, com média de idade 21,53 ± 1,26 anos, percentual de gordura 7,76 ± 3,53%, peso corporal 74,9 ± 10,36 kg e estatura 180,69 ± 7,14 cm. Os indivíduos realizaram o teste de contração isométrica voluntária máxima (CIVM da mão dominante seguido do protocolo de degraus submáximos em 20%, 40% e 60% da CIVM por 10 segundos cada. O processamento dos sinais envolveu a filtragem passa banda e o cálculo dos valores de raiz média quadrática (RMS e frequência mediana (FM em cada degrau de contração submáxima. A análise de variância "two-way" foi aplicada para os valores de RMS e FM. O teste proposto não gerou queda do rendimento de força nos degraus submáximos estabelecidos e a instauração do processo de fadiga do FSD. Por outro lado, o FRC apresentou sinais de fadiga mioelétrica sugerindo o processo de falência da FPM. Estes dados sugerem que a fadiga mioelétrica dos flexores dos dedos durante a FPM é um processo tardio à fadiga dos estabilizadores do punho. O protocolo em degrau de 60% parece desencadear o processo de fadiga mioelétrica do músculo FRC, mas não do FSD, baseado na análise da ativação muscular nos domínios do tempo e frequência.

  5. Avaliação da rugosidade superficial e da alteração de cor do esmalte humano submetido ao clareamento dental e/ou refrigerante a base de cola, em função de escovação simulada

    OpenAIRE

    Cunha, Lia Alves da [UNESP

    2008-01-01

    Este estudo in vitro avaliou o efeito da abrasão do esmalte humano na rugosidade superficial e na alteração de cor de dentes previamente submetidos à erosão. Quarenta e oito pré-molares humanos hígidos foram divididos em face vestibular e lingual, totalizando 96 fragmentos. Os espécimes foram divididos em quatro grupos (n=24): C - controle; O - clareamento com peróxido de hidrogênio a 38% (Opalescence Xtra Boost); OR - clareamento e imersão em refrigerante a base de cola (Coca-cola); R - imer...

  6. Aplicação superficial de escória, lama cal, lodos de esgoto e calcário na cultura da soja Surface application of flue dust, aqueous lime, sewage sludge and limestone on soybean crop

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    Juliano Corulli Corrêa

    2008-09-01

    Full Text Available O objetivo deste trabalho foi avaliar o efeito da aplicação superficial de lodos de esgoto, lama cal, escória de aciaria e calcário sobre o estado nutricional e a produtividade da soja, em sistema plantio direto. O delineamento foi o de blocos ao acaso em arranjo fatorial 4x4+1, constituído por quatro tratamentos - resíduos de lodo de esgoto centrifugado (LC e de biodigestor (LB, escória de aciaria (E e lama cal (Lcal - nas doses 0, 2, 4 e 8 Mg ha-1, mais o controle com 2 Mg ha-1 de calcário. As plantas de soja apresentaram maior concentração de nitrogênio, fósforo e cálcio, em 2003, 2004 e 2005, e de potássio, em 2003 e 2004, em razão dos tratamentos LC, LB, E, Lcal e calagem. A produtividade da soja foi favorecida pela aplicação dos tratamentos no sistema plantio direto, em 2003, 2004 e 2005. O fósforo, e o cálcio contribuíram para o aumento da produtividade da soja em 2003 e 2004.The objective of this work was to evaluate the effect of the surface application of sewage sludge, aqueous lime, flue dust and limestone on soybean nutrition and yield in notill system. The experiment was arranged in a randomized complete block design, in factorial scheme of 4x4+1, and consisted of four residues: centrifuged sewage sludge (CSS, biodigestor sewage sludge (BSS, flue dust (FD and aqueous lime (AL, at 0, 2, 4 and 8 Mg ha-1, and one additional control treatment with dolomitic limestone at 2 Mg ha-1. The soybean plants showed greater contents of nitrogen, phosphorus and calcium in 2003, 2004 and 2005, and potassium contents in 2003 and 2004, due to the treatments CSS, BSS, FD, AL and limestone. Soybean grain yield was also enhanced due to surface applications of the treatments in notill system in 2003, 2004 and 2005. The phosphorus and calcium contributed to increase soybean yield in 2003 and 2004.

  7. Análise da sustentabilidade ambiental do sistema de classificação das águas doces superficiais brasileiras Environmental sustainability analysis of the Brazilian superficial waterfreshes

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    Denise Gallo Pizella

    2007-06-01

    Full Text Available O Brasil é um país dotado de grandes reservas hídricas superficiais e biodiversidade aquática, apesar de sua distribuição desigual entre as diversas regiões hidrográficas. O sistema de classificação das águas doces superficiais brasileiras norteia-se pelos pressupostos e instrumentos das políticas nacionais de meio ambiente e de recursos hídricos, regulamentadas por outras legislações, como a Resolução CONAMA nº 357/05. O presente trabalho objetivou-se a analisar os problemas existentes na gestão da qualidade hídrica brasileira frente às premissas de sustentabilidade ambiental, buscando-se, por meio das estratégias adotadas em países de referência, identificar novas tendências. Constataram-se entraves de ordem técnica, legal, econômica, social e institucional, como: falta de articulação entre os instrumentos das políticas hídrica e ambiental, dificuldades na criação de Comitês e as Agências de Bacias, incongruência entre objetivos de qualidade protetivos e a existência de classes de qualidade permissivas, estabelecimento de padrões qualitativos considerando apenas as características físico-químicas e microbiológicas da água, defasagem do sistema de informações ambientais, dentre outros. A partir deste diagnóstico, buscou-se levantar recomendações para o aperfeiçoamento do sistema.Brazil is a country with large superficial water reserves and aquatic biodiversity, despite the unequal distribution among hydrographic regions. Brazilian superficial freshwater classification system is guide for the objectives and instruments of environmental and water policies, regulated for another laws, like Resolution CONAMA nº 357/05. The present work intends to analyze the existent problems in Brazilian water quality management in relation the environmental sustainability premises and, by means of studying reference countries strategies, to identify new trends. It was evidenced technical, legal, economic, social

  8. Avaliação da topografia superficial de cerâmicas submetidas a diferentes tratamentos de superfície

    OpenAIRE

    Juliane Butze; Maurem Leitão Marcondes; Luiz Henrique Burnett Júnior; Ana Maria Spohr

    2011-01-01

    Objetivo: O objetivo deste estudo foi avaliar a topografia da superfície das cerâmicas Noritake, IPS e.max e Cercon quando empregado o jateamento com óxido de alumínio ou o condicionamento com ácido fluorídrico. Materiais e Método: Foram confeccionadas seis amostras de cada cerâmica (10 mm x 10 mm x 0,5 mm), sendo divididas em três grupos: Grupo 1: sem tratamento de superfície (controle); Grupo 2: jateamento com óxido de alumínio de 50 µm; Grupo 3: ácido fluorídrico a 10%. As amostras foram ...

  9. Superficies de segundo orden

    OpenAIRE

    Salazar Salazar, Luis Álvaro

    1987-01-01

    Este trabajo se propone poner al alcance de estudiantes de primeros semestres de carreras de aplicación de la matemática, un algoritmo proporcionado por el álgebra lineal, para tratar con mas generalidad, agilidad y libertad unos objetos de la geometría analítica de no fácil manipulación por otros métodos y que se conocen como superficies de segundo orden o superficies cuádricas. En este orden de ideas, el autor considera importante que con este tratamiento se incluya este tema en una asignat...

  10. Uso tópico do inteferon alfa-2b para neoplasia escamosa da superficie ocular em um caso de paciente com xeroderma pigmentoso

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    Nayara Queiroz Cardoso Pinto

    Full Text Available Resumo Relato de um caso clínico de Xeroderma Pigmentoso com carcinoma espinocelular de conjuntiva bilateral que apresentou regressão importante das dimensões tumorais com o uso de Interferon alfa-2b tópico. Relato de caso: Paciente feminina com Xeroderma Pigmentoso em estágio avançado, com ausência de pele sadia, tendo sido submetida a cerca de 60 exéreses de lesões de pele malignas. A paciente compareceu com tumoração conjuntival em ambos os olhos, correspondendo a carcinoma espinocelular de conjuntiva e neoplasia intraepitelial de conjuntiva em olho esquerdo. Devido as dificuldades cirúrgicas, alta taxa de recidiva e elevada probabilidade de formação de simbléfaro foi-se iniciado terapêutica com Interferon alfa-2beta 1.000.000 unidades tópico, obtendo-se bons resultados com importante regressão do tamanho da lesão e resolução dos sintomas. Conclusão: O uso tópico de interferon alfa-2beta em neoplasia escamosa de conjuntiva, mostrou-se uma boa opção terapêutica em situações de elevado risco cirúrgico e de complicações pós operatórias.

  11. ALTERAÇÕES DOS ATRIBUTOS FÍSICO-QUÍMICOS DA CAMADA SUPERFICIAL DO SOLO EM RESPOSTA À AGRICULTURA COM SOJA NA VÁRZEA DO TOCANTINS

    Directory of Open Access Journals (Sweden)

    Elainy Cristina Alves Martins Oliveira

    2015-12-01

    Full Text Available O uso do solo com cultivos anuais durante longo tempo, especialmente quando são utilizados manejos não conservacionistas, como arações e gradagens, normalmente são responsáveis pela degradação mais intensa de suas propriedades. Este trabalho avaliou as propriedades do solo em três áreas sob cultivo agrícola e uma área nativa de Cerrado, verificando as alterações ocorridas nos atributos físico-químicos do solo após dois, cinco e oito anos sob plantio de soja. As amostras de solo foram coletadas na Fazenda Praia Alta, no município de Lagoa da Confusão - TO, onde a soja é cultivada no período de entressafra (maio-junho, em várzea irrigada, sob regime de subirrigação. A análise físico-química do solo quantificou pH, matéria orgânica (MO, P, S, K, Ca, Mg, Al, H + Al, CTC, SB, Na, Zn, B, Cu, Fe, Mn, argila, silte e areia. Os resultados mostraram evidências que o tempo de uso do solo com agricultura tecnificada, influencia as propriedades do solo; o tempo de cultivo do solo parece influenciar as modificações nos atributos naturais de áreas de várzea alagável no Cerrado. Palavras-chave: nutrientes, propriedades do solo, plantio direto. DOI: http://dx.doi.org/10.18561/2179-5746/biotaamazonia.v5n4p56-62

  12. Evaluation of the surface hardness of composite resins before and after polishing at different times Avaliação da dureza superficial de resinas compostas antes e após o polimento em diferentes tempos

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    Michelle Alexandra Chinelatti

    2006-06-01

    Full Text Available PURPOSE: The aim of this study was to evaluate the surface hardness of six composite resins: Revolution, Natural Flow, Fill Magic Flow, Flow-it! (flowables, Silux Plus (microfilled and Z100 (minifilled before and after polishing at different times. MATERIALS AND METHODS: For this purpose, 240 specimens (5mm diameter, 1.4mm high were prepared. Vickers hardness was determined before and after polishing at different times: immediately, 24h, 7 and 21 days after preparation of the samples. Statistical analysis was performed by ANOVA and Tukey test. RESULTS: There was no difference in the hardness of flowable resins, which had lower hardness than the minifilled resin. The minifilled resin showed the highest surface hardness as compared to the other materials (pPROPOSIÇÃO: O objetivo deste estudo foi avaliar a dureza superficial de seis resinas compostas - Revolution, Natural Flow, Fill Magic Flow, Flow-it! (flowables, Silux Plus (micropartículas e Z100 (híbrida - antes e após o polimento realizado em diferentes tempos. MATERIAL E MÉTODO: Foram confeccionados 240 corpos-de-prova circulares (5mm de diâmetro e 1,4mm de altura. A dureza Vickers foi obtida antes e após o polimento realizado em diferentes tempos: imediatamente, 24 horas, 7 dias e 21 dias após a confecção do corpo-de-prova. Os dados foram analisados estatisticamente por meio da ANOVA e do Teste de Tukey. RESULTADOS: Não houve diferença entre as resinas compostas flowable, as quais apresentaram os menores valores de dureza. A resina composta híbrida demonstrou os melhores resultados. Todos os materiais exibiram aumento de dureza após a realização do polimento, que foi mais evidente após 7 dias. CONCLUSÃO: Pôde-se concluir que, independente do tipo de resina composta, a dureza superficial foi consideravelmente maior quando o polimento foi realizado 1 semana após a confecção dos corpos-de-prova.

  13. Análise da rugosidade superficial de materiais restauradores estéticos: efeito de agentes clareadores e tempo = Analysis of roughness surface of aesthetic restoring materials: effect of bleaching agentes and time

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    Pozzobon, Roselaine Terezinha

    2005-01-01

    Full Text Available Este estudo in vitro avaliou o efeito de agentes clareadores na rugosidade superficial (Ra de materiais restauradores estéticos, com o passar do tempo. Foram utilizadas duas resinas compostas, Z100 (M1 e Silux-Plus (M2, um compômero, Dyract (M3 e um ionômero de vidro modificado por resina, Vitremer (M4, que foram expostos a dois agentes clareadores: Opalescence (C1, peróxido de carbamida 10%, e Hi-Lite (C2, peróxido de hidrogênio 35% e como meio de imersão foi utilizada saliva artificial (Co. Foram confeccionados 120 corpos de prova, sendo a Ra avaliada após 1 hora de confecção; e antes da imersão em saliva artificial (T0, após 1dia (T1, 7 (T2, 15 (T3 e 30 (T4 dias de exposição aos agentes clareadores. No grupo controle, os corpos-de-prova ficaram somente imersos em saliva artificial. Após análise estatística de variância ANOVA (a = 5%, teste de Tukey, e método da decomposição da soma de quadrados, foi possível concluir que: 1 – a Ra dos materiais restauradores estéticos, de forma geral, alterou-se após exposição aos diferentes agentes clareadores e ao longo do tempo; 2 – em função do material restaurador, M2 apresentou a maior média de Ra, seguido em ordem decrescente por M4, M3 e M1; 3 – C1 e C2 exerceram ação sobre a superfície dos materiais restauradores aumentando a Ra para todos os materiais avaliados, principalmente em M2 e M4; 4 – em função do fator tempo, observou-se influência estatisticamente significativa sobre a Ra, pois quanto maior o tempo de exposição ao agente clareador, maiores os valores médios de Ra

  14. QUALIDADE DA CAMADA SUPERFICIAL DE SOLO SOB MATA, PASTAGENS E ÁREAS CULTIVADAS QUALITY OF SOIL SURFACE LAYER UNDER FOREST, PASTURE AND CROPPED AREAS

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    Rafael Vivian

    2008-06-01

    Full Text Available

    Nesta pesquisa objetivou-se quantificar características físicas, químicas e biológicas, bem como a qualidade de um Argissolo vermelho-amarelo com vegetação natural e cultivado com pastagens e culturas. Foram coletadas amostras de solo, na profundidade de 0 a 10 cm, nos seguintes ambientes: mata nativa (I; pastagem de Brachiaria brizantha, formada pelo consórcio com milho (II; pastagem de B. brizantha com dez anos de uso (III; área cultivada com milho em plantio direto (IV; e área de pastagem de B. brizantha, formada após o cultivo de soja em plantio direto (V. As seguintes características foram avaliadas: físicas (densidade do solo, porosidade total, diâmetro médio geométrico de agregados, umidade gravimétrica, textura, capacidade de retenção de água e o grau de floculação; químicas (pH em água, P e K disponíveis, P-remanescente, Ca, Mg e Al, H+Al, carbono orgânico, soma e saturação por bases, CTC, Zn e Cu; e microbiológicas (carbono da biomassa microbiana, respiração basal, quociente microbiano e metabólico e atividade das enzimas fosfatases ácida e alcalina e ?-glicosidade. Comparado ao sistema de referência (I, o ordenamento dos ambientes para a qualidade de solo foi V, II, IV e III, sendo a pastagem exclusiva o ambiente de pior qualidade. Logo, onde houve interação entre agricultura e cultivo forrageiro, a qualidade do ambiente edáfico foi superior ao de monocultivo, quer seja com milho ou pastagem exclusiva. E, conforme o manejo, essa qualidade pode se aproximar do ambiente de referência.

    PALAVRAS-CHAVE: Integração lavoura-pecuária; plantio direto; milho; soja; sustentabilidade.

  1. Uso de geomantas no controle da erosão superficial hídrica em um talude em corte de estrada Evaluation of geotextiles to control surface runoff on a roadside

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    Leonardo Silva Fernandes

    2009-02-01

    Full Text Available Considerando que o Brasil e muitos outros países tropicais necessitam de aperfeiçoar métodos de recobrimento de taludes, tornam-se necessários estudos que aprimorem a utilização e a eficácia das diferentes alternativas do mercado. Este estudo teve como objetivo avaliar o desempenho das geomantas comerciais antierosivas MacMat®, Fibrax® e Tela Biotêxtil® na proteção do solo contra a erosão superficial hídrica. O experimento foi realizado em um talude em corte de estrada na cidade de Viçosa (MG, em meados de 2003, e foi avaliado entre dezembro e março de 2004. Para isso, realizou-se uma análise do escoamento superficial baseada em oito eventos chuvosos comparando-se as variáveis massa de sólidos e volume de suspensão de água + solo escoado em uma combinação de geomantas com ou sem vegetação (mistura de espécies de gramíneas e leguminosas. Os tratamentos testados foram: Tratamento 1 - testemunha (solo exposto; Tratamento 2 - Tela Biotêxtil® com plantas; Tratamento 3 - MacMat® sem plantas; Tratamento 4 - MacMat® com plantas; Tratamento 5 - Fibrax® sem plantas; e Tratamento 6 - Fibrax® com plantas. A análise estatística utilizada foi o teste de Tukey a 5 %. Embora não tenham sido encontradas diferenças significativas entre os tratamentos aplicados devido ao elevado coeficiente de variação, pode-se constatar que a utilização das mantas proporcionou a redução da perda de solos. O tratamento seis foi o mais eficiente para impedir a perda de solo. Entretanto, quando esta geomanta foi utilizada sem vegetação (Tratamento 5, permitiu o maior volume de suspensão escoada. Concluiu-se que as geomantas aumentaram a proteção do solo contra a erosão superficial hídrica e a incorporação de vegetação melhorou os resultados em todos os tratamentos.Considering that Brazil and many other countries with tropical ecosystems need to enhance methods of embankment cover, it is necessary to study the enhancement of

  2. Influência da aplicação de flúor sobre a rugosidade superficial do ionômero de vidro Vitremer e adesão microbiana a este material Influence of the application of fluoride on the superficial roughness of Vitremer glass ionomer cement and microbial adhesion to this material

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    Denise PEDRINI

    2001-03-01

    Full Text Available Os cimentos ionoméricos representam importante opção de material restaurador em Odontologia e sua adesão à estrutura dental, diminuindo a infiltração marginal, somada à liberação de flúor, inibindo o metabolismo de microrganismos acidogênicos e favorecendo a remineralização dental, podem diminuir a ocorrência de cárie secundária. A aplicação tópica de géis acidulados ou neutros contendo flúor tem sido largamente utilizada em Odontologia. No entanto, este procedimento pode afetar a integridade dos materiais restauradores, aumentando sua rugosidade e a retenção de placa bacteriana. Dessa forma, o presente estudo avaliou o período de tempo no qual o cimento ionomérico Vitremer mantém sua capacidade inibitória sobre Streptococcus mutans ATCC 25175 e a adesão dos mesmos sobre a superfície do material, bem como a influência da aplicação tópica de flúor acidulado e neutro sobre esses parâmetros microbiológicos e as características superficiais daquele material. Verificou-se que a atividade antimicrobiana do cimento ionomérico Vitremer se mantém por aproximadamente quatro dias e não é recuperada com o uso de flúor gel acidulado ou neutro. Observou-se, também, que Streptococcus mutans ATCC 25175 adere ao material restaurador testado sendo que a aplicação tópica de flúor não influenciou esta adesão. As características superficiais desses materiais não se alteraram com a aplicação dos géis.Glass ionomer cements are important options in restorative and preventive dentistry due to their adhesion to the tooth surface and to fluoride release, which can decrease the risk of recurrent caries. The topical use of acidulated and neutral fluoride gels has been frequent in dentistry. However, this procedure can adversely affect the surface of restorative materials, increasing their roughness and the retention of dental plaque. Thus, this study evaluated the period in which Vitremer glass ionomer cement maintains

  3. Mass spectrometry analysis of surface tension reducing substances produced by a pah-degrading Pseudomonas citronellolis strain Análise por espectrometria de massa de substâncias redutoras da tensão superficial produzidas por uma cepa de Pseudomonas citronellolis degradadora de hidrocarbonetos aromáticos policíclicos

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    Rodrigo J. S. Jacques

    2008-06-01

    Full Text Available In this work we investigated the structure of the iron-stimulated surface tension reducing substances produced by P. citronellolis 222A isolated from a 17-years old landfarming used for sludge treatment in petrochemical industries and oil refinery. Its mass spectrum differs from P. aeruginosa spectrum, indicating that the surface tension reducing substances produced by P. citronellolis can be a new kind of biosurfactant.Neste trabalho é apresentado um estudo a respeito da análise da estrutura de substâncias redutoras de tensão superficial produzidas por Pseudomonas citronellolis 222A estimulado pela presença de ferro. Esta bactéria foi isolada de um solo que há 17 anos vem sendo utilizado para o tratamento de borra oleosa proveniente da indústria petroquímica e de refinaria de petróleo. O espectro de massa difere do espectro de P. aeruginosa, indicando que as substâncias redutoras de tensão superficial produzidas por P. citronellolis podem ser um novo tipo de biosurfactante.

  4. Neoplasia intra-epitelial grau III da vulva e da região perianal tratada com vulvectomia superficial: relato de caso High-grade vulvar and perianal intraepithelial neoplasia treated with skinning vulvectomy: a case report

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    Walquíria Quida Salles Pereira Primo

    2003-05-01

    Full Text Available A neoplasia intra-epitelial vulvar grau III (NIV III se manifesta de modo visível, portanto, acessível à biópsia e, por conseguinte, ao diagnóstico histológico. Há duas formas precursoras do câncer vulvar: a NIV associada ao papiloma vírus humano (HPV e a NIV associada ao líquen simples crônico, hiperplasia de células escamosas e líquen escleroso, não tratados. Porém, pode existir sobreposição das duas formas. O termo papulose bowenóide, apesar de ser desencorajado, define uma das formas clínicas da NIV, que se apresenta como lesões pigmentadas, verruciformes, papulares e múltiplas. A NIV III está associada com HPV em mais de 80% dos casos e em 40% das vezes, nota-se envolvimento perianal. O seu tratamento é muito difícil e pode ocorrer recorrência em qualquer tempo e por muitos anos. Embora não exista tratamento padrão definido, os trabalhos apontam para a cirurgia, respeitando margem de segurança, como o mais adequado.High-grade vulvar intraepithelial neoplasia (VIN III is a visible lesion; therefore, it is accessible to biopsy and thus, to a histological diagnosis. There are two forms of vulvar cancer precursors: VIN caused by human papillomavirus (HPV and VIN associated with untreated lichen simplex chronicus, squamous cell hyperplasia, and lichen sclerosus. There may be overlap of the two forms. The term bowenoid papulosis, although discouraged, identifics a clinical form of VIN III. Such lesion appears as pigmented, wart-like growths or papules. VIN III is associated with HPV in more than 80% of the cases, and there is perianal involvement in 40% of the times. Vulvar intraepithelial neoplasia is difficult to cure and relapses can occur at any time for many years. Although there is no defined standard treatment, studies point to surgery, respecting a free margin, as the most adequate one.

  5. Rotina computacional para a determinação da velocidade de sedimentação das partículas do solo em suspensão no escoamento superficial Computational routine for the determination of the sedimentation velocity of the soil particles in the drain

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    Luiz F. C. de Oliveira

    2005-04-01

    Full Text Available O presente trabalho teve como objetivo desenvolver uma rotina computacional para a determinação da velocidade de deposição de partículas em suspensão no escoamento superficial, verificar sua aplicação por intermédio de modelo de transporte de sedimentos e comparar os resultados obtidos com dados experimentais. Empregou-se na rotina o processo iterativo de Newton-Rapshon para a solução das equações empregadas na determinação da velocidade de deposição de partículas em suspensão no escoamento superficial, e na solução da equação do transporte de sedimentos empregou-se a técnica das diferenças finitas. Essas rotinas foram empregadas na implementação do modelo MTSES (Modelo para Transporte de Solutos no Solo e no Escoamento Superficial. As velocidades de queda das partículas obtidas pela rotina desenvolvida, em média, foram superestimadas, com erro relativo médio de 0,63%, o que possibilitou a utilização da rotina desenvolvida no MTSES. O modelo MTSES superestimou o total de sedimentos transportados pelo escoamento superficial para todas as intensidades de precipitação empregadas neste estudo, com variações porcentuais de 15,6 a 58,3%.The present work had as objective to develop a computational routine for the determination of the sedimentation velocity in the drain and to verify its application through a model of transport of sediments and to compare the results obtained with experimental data. It was used in the routine the iterative process of Newton-Rapshon for the solution of the equations applied in the determination of the sedimentation velocity in the drain, and on the solution of the transport of sediments equation was applied the technique of the finite differences. Those routines were used in the implementation of the model MTSES (Model for solute transport in the soil and in the drain. The sedimentation velocities obtained by the developed routine were overestimated, with a medium relative error of 0

  6. Desenvolvimento e validação de um modelo matemático para o cálculo da área superficial de frangos de corte Development and validation of a model to compute the surface area of broiler chickens

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    Eberson Silva

    2009-03-01

    Full Text Available A área superficial de frangos de corte é importante parâmetro de entrada em modelos de transferência de calor e massa. Dessa forma, o presente trabalho teve o objetivo de desenvolver e validar modelo matemático empírico para estimar a área superficial (As de frangos de corte. Para a realização desta pesquisa, foram utilizadas 84 aves de corte da linhagem Ross, sendo 37 machos e 47 fêmeas, com animais abrangendo todo o período da fase de criação. Em cada teste realizado em laboratório, uma ave, aleatoriamente selecionada, teve as suas dimensões (comprimento, largura e altura e massa corporal avaliadas. A pele com penas da ave foi retirada para a determinação da As. Parte dos dados foi usada para ajuste da equação para a determinação da As e parte para a validação. Os resultados mostraram que a equação empírica para a determinação da As é estatisticamente significativa (P0,05.Surface area (As of poultry is an important input parameter in heat and mass transfer calculation; thus, it was aimed with the present work to develop and to validate an empirical model to estimate the broiler chicken's surface area. Eighty four Ross broiler chickens were used in this research, thirty seven male and forty seven female, with body masses during all growth phase. In the laboratory, each randomly selected chicken had its dimensions (length, width and height and body mass evaluated. The chicken skin with feathers was taken off to determine As. Portion of the data was used to fit the equation to estimate the surface area and another portion was used to validate it. Results showed that the empirical equation to determine As was statically significant (P0.05.

  7. Tromboflebite superficial: epidemiologia, fisiopatologia, diagnóstico e tratamento Superficial thrombophlebitis: epidemiology, physiopathology, diagnosis and treatment

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    Marcone Lima Sobreira

    2008-06-01

    Full Text Available A tromboflebite superficial de membros inferiores é doença de ocorrência comum, estando associada a diversas condições clínicas e cirúrgicas. Historicamente considerada doença benigna, devido à sua localização superficial e ao fácil diagnóstico, o tratamento foi conservador durante muito tempo, na maioria dos casos. Entretanto, relatos recentes de freqüências altas de complicações tromboembólicas associadas - 22 a 37% para trombose venosa profunda e até 33% para embolia pulmonar - alertaram para a necessidade de abordagens diagnósticas e terapêuticas mais amplas, visando diagnosticar e tratar essas possíveis complicações. A possibilidade da coexistência dessas e de outras desordens sistêmicas (colagenoses, neoplasias, trombofilias interfere na avaliação e influencia a conduta terapêutica, que pode ser clínica, cirúrgica ou combinada. No entanto, devido à falta de ensaios clínicos controlados e às incertezas quanto a sua história natural, o diagnóstico e o tratamento da tromboflebite superficial continuam indefinidos. Neste trabalho, foi feita uma revisão da literatura analisando-se a epidemiologia, fisiopatologia e estado atual do diagnóstico e tratamento da tromboflebite superficial.Superficial thrombophlebitis of the lower limbs is a commonly occurring disease, and it is associated with various clinical and surgical conditions. Historically considered to be a benign disease due to its superficial location and easy diagnosis, its treatment was, for a long time, conservative in most cases. Nevertheless, recent reports of high frequency and associated thromboembolic complications, which vary from 22 to 37% for deep venous thrombosis and up to 33% for pulmonary embolism, have indicated the need for broader diagnostic and therapeutic approaches in order to diagnose and treat such possible complications. The possibility of coexistence of these and other systemic disorders (collagenosis, neoplasia, thrombophilia

  8. Effect of light curing tip distance and resin shade on microhardness of a hybrid resin composite Efeito da distância da ponta do aparelho de fotoativação e da cor na microdureza superficial de um compósito híbrido

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    Flávio Henrique Baggio Aguiar

    2005-12-01

    Full Text Available Resin composite shades and resin composite polymerization performed with a distanced light tip are factors that can affect polymerization effectiveness. Thisin vitro study aimed to evaluate the influence of curing tip distance and resin shade on the microhardness of a hybrid resin composite (Z250 - 3M ESPE. Forty-five resin composite specimens were randomly prepared and divided into nine experimental groups (n = 5: three curing tip distances (2 mm, 4 mm, and 8 mm and three resin shades (A1, A3.5, and C2. All samples were polymerized with a continuous output at 550 mW/cm². After 24 hours, Knoop microhardness measurements were obtained on the top and bottom surfaces of the sample, with a load of 25 grams for 10 seconds. Five indentations were performed on each surface of each sample. Results showed that bottom surface samples light-cured at 2 mm and 4 mm presented significantly higher hardness values than samples light-cured at 8 mm. The resin shade A1 presented higher hardness values and was statistically different from C2. The resin shade A3.5 did not present statistical differences from A1 and C2. For the top surface, there were no statistical differences among the curing tip distances. For all experimental conditions, the top surface showed higher hardness values than the bottom surface. It was concluded that light curing tip distance and resin shade are important factors to be considered for obtaining adequate polymerization.A cor do compósito e a polimerização realizada com a ponta do aparelho de fotoativação distante da superfície do compósito são fatores que podem afetar a efetividade de polimerização. Assim, o objetivo deste estudo in vitro foi avaliar a influência desses fatores na microdureza superficial de um compósito híbrido (Z250 - 3M ESPE. Quarenta e cinco espécimes de compósito foram aleatoriamente preparados de acordo com os nove grupos experimentais (n = 5: três distâncias de fotoativação (2 mm, 4 mm e 8 mm e

  9. The superficial ulnar artery: development and clinical significance Artéria ulnar superficial: desenvolvimento e relevância clínica

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    Srinivasulu Reddy

    2007-09-01

    Full Text Available The principal arteries of the upper limb show a wide range of variation that is of considerable interest to orthopedic surgeons, plastic surgeons, radiologists and anatomists. We present here a case of superficial ulnar artery found during the routine dissection of right upper limb of a 50-year-old male cadaver. The superficial ulnar artery originated from the brachial artery, crossed the median nerve anteriorly and ran lateral to this nerve and the brachial artery. The superficial ulnar artery in the arm gave rise to a narrow muscular branch to the biceps brachii. At the elbow level the artery ran superficial to the bicipital aponeurosis where it was crossed by the median cubital vein. It then ran downward and medially superficial to the forearm flexor muscles, and then downward to enter the hand. At the palm, it formed the superficial and deep palmar arches together with the branches of the radial artery. The presence of a superficial ulnar artery is clinically important when raising forearm flaps in reconstructive surgery. The embryology and clinical significance of the variation are discussed.As principais artérias do membro superior apresentam uma ampla variação, que é relativamente importante a cirurgiões ortopédicos e plásticos, radiologistas e anatomistas.Apresentamosumcaso de artéria ulnar superficial encontrada durante dissecção de rotina de membro superior direito de um cadáver masculino de 50 anos de idade.Aartéria ulnar superficial originava-se da artéria braquial, cruzava o nervo mediano anteriormente e percorria lateralmente esse nervo e a artéria braquial. A artéria ulnar superficial no braço deu origem a um ramo muscular estreito do músculo bíceps braquial. Ao nível do cotovelo, a artéria percorria superficialmente a aponeurose bicipital, onde era cruzada pela veia cubital mediana. Percorria, então, em sentido descendente e medialmente superficial aos músculos flexores do antebraço, e então descendia para

  10. Modelos acoplados do IPCC-AR4 e o gradiente meridional de temperatua da superficie do mar no atlântico tropical : relaçoes com a precipitaçao no norte do nordeste do Brasil

    OpenAIRE

    Brabo Alves, J.M.; Rodrigues Chaves, R.; Servain, Jacques; Barreiros de Souza, E.; Mariano da Silva, E.; Santana dos Santos, A.C.; Barros Barbosa, A.C.; Oliveira, C. De J. De; Sousa Sombra, S.; Araujo Costa, A.; De Melo Pinheiro, F.G.

    2014-01-01

    Este artigo mostra como três modelos acoplados do Intergovernmental on Panel Climate Change - (IPCC-AR4), o FGOALS1. 0G – LASG do Institute of Atmospheric Physics of China, o GISSER da National Aeronautics Space Admnistration (NASA) e o GFDL_CM2 da National Oceanic and Atmospheric Administration (NOAA), simularam a variabilidade do gradiente meridional de Temperatura da Superfície do Mar (TSM), entre os meses de fevereiro a maio, no Atlântico Tropical (1901-1999). A precipitação durante...

  11. Superficial Priming in Episodic Recognition

    Science.gov (United States)

    Dopkins, Stephen; Sargent, Jesse; Ngo, Catherine T.

    2010-01-01

    We explored the effect of superficial priming in episodic recognition and found it to be different from the effect of semantic priming in episodic recognition. Participants made recognition judgments to pairs of items, with each pair consisting of a prime item and a test item. Correct positive responses to the test item were impeded if the prime…

  12. Correção da acidez e mobilidade de íons em Latossolo com aplicação superficial de escória, lama cal, lodos de esgoto e calcário Liming and ion mobility in an Oxisol under surface application of flue dust, aqueous lime, sewage sludge and limestone

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    Juliano Corulli Corrêa

    2007-09-01

    Full Text Available Com o objetivo de avaliar a correção da acidez, saturação por bases e a mobilidade de nitrato, cálcio e magnésio no perfil de um Latossolo Vermelho distrófico, foi conduzido experimento em condições de campo, em área sob sistema plantio direto, de 2002 a 2005. A possível interferência dos ácidos orgânicos, provenientes da aveia-preta, decorrentes da aplicação superficial de escória de aciaria, lama cal e lodos de esgoto centrifugado e de biodigestor, foram igualmente avaliadas nas doses de 0 (testemunha, 2, 4 e 8 t ha-1 e um tratamento adicional composto pela calagem superficial na dose de 2 t ha-1. A aplicação superficial de doses crescentes de escória de aciaria, lama cal e lodo de esgoto centrifugado permitiu verificar aumento do valor de pH no solo. Esses resíduos e o lodo de esgoto de biodigestor elevaram a saturação por bases e a disponibilidade de nitrato, cálcio e magnésio até a profundidade de 40 cm no solo, com apenas três meses de reação. A pequena quantidade de ácidos orgânicos na parte aérea da aveia-preta não justificou o rápido deslocamento dos nutrientes e da neutralização do solo em subsuperfície. Os resíduos escória de aciaria, lama cal e lodo de esgoto centrifugado podem ser utilizados como corretivos da acidez e aplicados sobre a superfície do solo no sistema de plantio direto.The experiment was carried out under field conditions in a no-tillage system from 2002 to 2005, aiming to evaluate liming, base saturation and nitrate, calcium and magnesium mobility in a dystrophic Clay Rhodic Hapludox soil. The possible interference of organic acid catering of black oat through surface application of flue dust, aqueous lime and sewage sludge from a centrifuge and a biodigestor were also evaluated at rates of zero (control, 2, 4 and 8 t ha-1 as well as an additional treatment of dolomitic limestone at the rate of 2 t ha-1. Due to the increasing surface applications of flue dust, aqueous lime and

  13. Impacts of urban solid waste disposal on the quality of surface water in three cities of Minas Gerais - Brazil Impactos da disposição de resíduos sólidos urbanos na qualidade da água superficial em três municípios de Minas Gerais - Brasil

    Directory of Open Access Journals (Sweden)

    Rosângela Francisca de Paula Vitor Marques

    2012-12-01

    do lixão encerrado de Elói Mendes (Ribeirão Mutuca, municípios situados no Sul de Minas Gerais - Brasil foram avaliados. Para cada curso d'água foram coletadas 5 amostras de água no período chuvoso e 5 amostras no período seco, em três diferentes pontos para cada um dos três cursos d'água sendo: (P1 a montante das ADRSU, (P2 logo após o local de descarga da Estação de Tratamento de Esgoto - ETE (no aterro sanitário, e nas outras tipologias, após ponto de lançamento do escoamento superficial proveniente das ADSRU, e (P3 à jusante das ADSRU. Realizaram-se análises físico-químicas e bacteriológicas, cujos resultados foram analisados com base na estatística descritiva e comparados com valores de referência da Resolução CONAMA 357/2005, bem como utilizados para cálculo do índice de qualidade de água (IQA. Não foi possível detectar efeito significativo das ADRSU, nos parâmetros indicadores da qualidade da água, a qual se apresentou em condições não satisfatórias em função das violações dos parâmetros fósforo, amônia, coliformes termotolerantes e da relação DQO/DBO mesmo à montante da ADSRU. No Ribeirão Mutuca, essa situação foi ainda mais crítica pois o IQA foi classificado como ruim em todos os pontos durante o período monitorado.

  14. Avaliação da dureza superficial de cimentos resinosos após cimentação de pinos de fibra de vidro: efeito de profundidade de polimerização e sistemas adesivos

    OpenAIRE

    Jardim, Patrícia dos Santos [UNESP

    2004-01-01

    Os pinos pré-fabricados de fibra de vidro têm sido o sistema de escolha para reconstrução de dentes anteriores tratados endodonticamente e o sucesso da cimentação dos pinos de fibra de vidro está associado à cimentação do tipo adesiva, sendo que o agente cimente normalmente utilizado é um cimento resinoso de dupla polimerização, entretanto questiona-se a eficácia dos cimentos de dupla polimerização, principalmente nas regiões muito distantes da fonte de luz, bem como sua compatibilidade quími...

  15. Medida da área do canal vertebral lombar em diferentes faixas etárias Medida de la superficie del canal vertebral lumbar en los diferentes grupos de edad Lumbar spinal canal area in different age groups

    National Research Council Canada - National Science Library

    Jair Ortiz; Alex Veneziano Oliveira Junior; José Luis Amim Zabeu

    2009-01-01

    OBJETIVO: medir as dimensões do canal vertebral lombar por meio de tomografia computadorizada, de modo a comparar os valores das diferentes faixas etárias e determinação da possível diferença entre elas. MÉTODOS...

  16. Superficie

    OpenAIRE

    Corna, Pablo María

    2015-01-01

    En la época posclásica del derecho romano se buscó, por parte del Estado y ciudadanos, utilizar ciertos terrenos que formaban parte de su patrimonio para arrendarlos por largo término —y a veces a perpetuidad— a personas que tenían el derecho de edificar o plantar mediante el pago de un precio llamado pensio o solárium. En el siglo II de nuestra era ya era utilizado para asentar tribus romanizadas en la frontera del imperio como para el cultivo de vid y los olivos que demoran varios...

  17. Superficie

    OpenAIRE

    Corna, Pablo María

    2015-01-01

    En la época posclásica del derecho romano se buscó, por parte del Estado y ciudadanos, utilizar ciertos terrenos que formaban parte de su patrimonio para arrendarlos por largo término —y a veces a perpetuidad— a personas que tenían el derecho de edificar o plantar mediante el pago de un precio llamado pensio o solárium. En el siglo II de nuestra era ya era utilizado para asentar tribus romanizadas en la frontera del imperio como para el cultivo de vid y los olivos que demoran varios años e...

  18. Relações entre tamanho de sedimentos erodidos, velocidade da enxurrada, rugosidade superficial criada pelo preparo e tamanho de agregados em solo submetido a diferentes manejos Relationships between size of eroded sediments, runoff velocity, surface roughness created by tillage, and size of aggregates in a soil submmited to different managements

    Directory of Open Access Journals (Sweden)

    Leandro Bochi da Silva Volk

    2009-10-01

    Full Text Available Vários fatores determinam a seletividade do processo de erosão hídrica pluvial no que se refere ao tamanho dos sedimentos transportados na enxurrada. Dentre eles, destacam-se a intensidade da chuva e da enxurrada a ela associada, a textura e o grau de consolidação da camada superficial do solo, a forma em que a erosão ocorre (entre sulcos, sulco ou voçoroca, a cobertura do solo por resíduos culturais, o microrrelevo do terreno ou a rugosidade superficial resultante do seu preparo e o tamanho e a estabilidade dos agregados do solo. Considerando isso, realizou-se este trabalho com o propósito de estabelecer relações quantitativas entre o índice D50 da distribuição de tamanho dos sedimentos erodidos, a velocidade da enxurrada, o índice IR da rugosidade superficial do solo criada pelo preparo e o diâmetro médio ponderado (DMP dos agregados do solo, em solo submetido a diferentes formas de manejo. O estudo foi desenvolvido em campo, na Estação Experimental Agronômica da Universidade Federal do Rio Grande do Sul (EEA/UFRGS, em Eldorado do Sul (RS, aplicando-se chuva simulada sobre um Argissolo Vermelho com textura francoargiloarenosa na camada superficial e declividade média de 0,115 m m-1. Esse solo havia sido submetido ao uso agrícola de diferentes modos (cultivos contínuo e interrompido, com diferentes sequências culturais (gramíneas e leguminosas de inverno e verão, implantadas em fileira, usando a técnica de semeadura direta, durante 7,5 anos (partindo da condição original de campo nativo. Efetuaram-se sete testes de erosão na pesquisa, cada um deles na intensidade constante de chuva de 63,5 mm h-1 e com duração de 1,5 h, usando o simulador de chuva de braços rotativos e parcelas experimentais com dimensões de 3,5 x 11,0 m cada uma. Os referidos testes de erosão foram realizados nas seguintes condições físicas de superfície do solo: (a solo não-mobilizado, com completa e nenhuma cobertura por res

  19. Influência da aplicação tópica de flúor fosfato acidulado sobre a rugosidade superficial do esmalte humano e de diferentes materiais restauradores = Influence of topical acidulated phosphate fluoride on surface roughness of human enamel and different restorative materials

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    Botta, Ana Carolina

    2010-01-01

    Full Text Available Objetivo: Este estudo avaliou a influência da aplicação tópica de flúor fosfato acidulado sobre a rugosidade do esmalte e de diferentes materiais restauradores. Metodologia: Amostras de cimento de ionômero de vidro modificado por resina (Vitremer - V, resina composta microhíbrida com flúor (Tetric Ceram - T e resina nanopartículada sem flúor em sua composição (Z350 - Z foram confeccionadas. Metade das amostras recebeu aplicação tópica de flúor fosfato acidulado a 1,23% (FFA (grupos VF, TF, ZF e EF e a outra metade não, totalizando 6 grupos experimentais (n=10. Dez terceiros molares humanos hígidos foram utilizados para confecção de amostras de esmalte (E, constituindo os grupos controles (n=10. A rugosidade média superficial (Ra dos materiais restauradores e do esmalte, com e sem flúor, foi analisada pelo rugosímetro. Os dados foram submetidos à análise de variância, testes de Tukey, t-Student e de Dunn-Bonferroni a 5% de significância. Resultados: Os valores médios de rugosidade, em micrometros, foram: Z=0,60; TF=1,00; ZF=1,05; VF=1,18; T=2,10; V=2,70; E=16,99 e EF=21,19. E e EF apresentaram Ra significativamente superior aos grupos experimentais. Conclusão: Concluiu-se que o FFA aumentou a rugosidade do esmalte, diminuiu a do cimento de ionômero de vidro e da resina microhíbrida com flúor e não alterou a rugosidade da resina nanoparticulada sem flúor

  20. Origem e dinâmica da deposição dos sedimentos superficiais na Várzea do Lago Grande de Curuai, Pará, Brasil Source and deposition dynamics of superficial sediments in the "Várzea do Lago Grande de Curuai" floodplain, Pará, Brazil

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    Marcelo Andrade Amorim

    2009-03-01

    Full Text Available Este estudo tem por objetivo caracterizar os sedimentos superficiais de um sistema de Várzea do Rio Amazonas, quanto a sua granulometria e ao seu teor orgânico, assim como compreender a origem e a hidrodinâmica destes sedimentos. 51 amostras de sedimento superficial foram coletadas na Várzea do Lago Grande de Curuai, localizada na margem direita do Rio Amazonas à aproximadamente 850km da foz. A granulometria, o teor em carbono orgânico e nitrogênio total, a razão entre o carbono e o nitrogênio (C/N, assim como o isótopo estável do carbono (δ13C e do nitrogênio (δ15N foram utilisados para este fim. Este estudo colocou em evidência que os sedimentos da várzea são finos, caracterizados principalmente pela presença de silte (médio à fino, seguido de argila e tem como principal fonte o Rio Amazonas e a Formação Alter do Chão. A presença de areia é pequena e extremamente localizada, próxima as áreas de deságue dos igarapés de terra firme que representam sua maior fonte. O teor de matéria orgânica nestes sedimentos varia entre 1,5 à 37% de carbono. Os resultados do isótopo do carbono (13C e da razão C/N evidenciam a presença de matéria orgânica composta por diferentes fontes: material orgânico terrígeno, macrofítico, solos, material orgânico transportado pelo rio, e um componente fitoplanctônico.The main objectives of this study were to characterize superficial sediments of an Amazonian floodplain system, by its size and organic content, and also to understand the local hydrodynamic and sources of these sediments. 51 samples of superficial sediment were collected in the floodplain "Várzea do Lago Grande de Curuai", located on the right bank of the Amazon River, approximately, 850km from the estuary. The granulometry, the organic carbon and total nitrogen contents, the carbon and nitrogen ratio (C/N, as well as the isotope of carbon (δ13C and nitrogen (δ15N were used. This study points out that the sediments

  1. Late sequelae of superficial irradiation

    Energy Technology Data Exchange (ETDEWEB)

    Hood, I.C.; Young, J.E.

    1984-10-01

    Superficial irradiation results in well recognized late sequelae including not only sclerosis and atrophy of skin and subcutaneous tissue, but also the development of benign and malignant tumors of skin and adjacent structures. The long latency between irradiation and its late effects allowed the early uncontrolled use of radiation treatment for benign conditions. The subsequent recognition of the causal relationship between tumors and previous irradiation has restricted its use to more appropriate purposes, although it is possible that it is still overused in some areas of dermatologic practice. Clinicians need to be aware of the time interval between irradiation and the development of its late sequelae, and the incidence of these sequelae. Appropriate irradiation exposure history should be a part of the evaluation of every patient.

  2. Medida da área do canal vertebral lombar em diferentes faixas etárias Medida de la superficie del canal vertebral lumbar en los diferentes grupos de edad Lumbar spinal canal area in different age groups

    Directory of Open Access Journals (Sweden)

    Jair Ortiz

    2009-03-01

    Full Text Available OBJETIVO: medir as dimensões do canal vertebral lombar por meio de tomografia computadorizada, de modo a comparar os valores das diferentes faixas etárias e determinação da possível diferença entre elas. MÉTODOS: a área do canal vertebral lombar foi medida em 78 indivíduos, divididos em oito grupos etários, com dados obtidos de exames de tomografia computadorizada do abdômen. As medidas foram realizadas nos cortes axiais nas vértebras L1, L3 e L5 ao nível da região trans-pedicular. Utilizado o método estatístico de ANOVA (análise de variância com análise de diferentes "p-value" para cada grupo estudado. RESULTADOS: as medidas para L1 produziram um "p-value" de 0,586 para a faixa etária e um "p-value" de 0,003 para o sexo. Portanto, não há diferença entre as faixas etárias e há diferença entre os sexos, sendo maior no sexo masculino. Para L3, o "p-value" da faixa etária foi de 0,258 e para o sexo de 0,062; no caso de L5, o "p-value" para a faixa etária foi de 0,279 e para o sexo de 0,003. CONCLUSÃO: não foi observada diferença estatística da área do canal vertebral lombar nos níveis L1, L3 e L5 nas diferentes faixas etárias. No entanto o diâmetro no sexo masculino foi maior com diferença estatística.OBJETIVO: medir el área del canal vertebral lumbar, utilizando la tomografía computarizada, comparándolo entre los distintos grupos de edad y determinar si existen diferencias entre ellos. MÉTODOS: el área del canal vertebral lumbar se midió en 78 temas, divididos en 8 grupos, con los datos obtenidos a partir de exploraciones de tomografía computarizada del a domen. Las mediciones se hicieron en las vértebras L1, L3 y L5 en la región transpedicular. RESULTADOS: medidas para L1 producido un p-valor de 0,586 para el grupo de edad y un p-valor de 0,003 para el sexo, por tanto, no hay diferencia entre los grupos de edad y hay diferencias entre los sexos, siendo mayor en los hombres; para L3, el "pvalue" del

  3. MUTAGENICITY AND GENOTOXICITY OF SUPERFICIAL AND GROUNDWATER BEFORE AND AFTER WATER TREATMENT = MUTAGENICIDADE E GENOTOXICIDADE EM ÁGUAS SUPERFICIAIS E SUBTERRÂNEAS ANTES E APÓS O TRATAMENTO DA ÁGUA

    Directory of Open Access Journals (Sweden)

    Regina Teresa Rosim Monteiro

    2013-01-01

    Full Text Available Water disinfection is a millenarian process; nevertheless, there are few studies about the safe use of chemicals for the consumer population. It is known that chlorine can react with the organic matter present in the water and form trihalomethanes (TAMs. Exposure to chlorinated water, which occurs by food, bathing, recreation or other uses have been the cause for concern due the damage caused to health, being bladder cancer the most worrisome. To evaluate the formation of genetic material damage, such as chromosome breaks, bridges, and others that cause loss of genetic material during cell division, genotoxicity and mutagenicity tests was performed using Allium cepa in samples of chlorinated drinking water. For the tests, samples of natural and treated water on four different water treatment stations from the city of Piracicaba, SP were used. The frequencies of chromosomal aberrations (AC and micronucleus (MN were analyzed after exposure of seeds, in three periods of 2008. Significant values of toxicity were found for samples of untreated and treated water compared to control. In water samples from a region that is predominantly agricultural, there was greater toxicity after treatment. It is suggested that these values are probably derived from products used in agriculture, transported to water bodies, increasing the organic load and the possibility of formation of TAMs, due to the use of chlorine in treated water samples. These results emphasize the possibility of formation of carcinogenic compounds during water treatment. = A desinfecção da água é um processo milenar, apesar disso, há poucos estudos sobre a segurança do uso de compostos químicos para a população consumidora. Sabe-se que o cloro, reagindo com a matéria orgânica presente na água, pode formar trihalometanos (TAMs. A exposição às águas cloradas como alimento, banho, recreação ou outros usos têm sido causa de preocupação devido aos danos à saúde, sendo o c

  4. O DOMÍNIO DAS ÁGUAS NA ORDEM CONSTITUCIONAL BRASILEIRA: O CASO DA FONTE DA BATATEIRA NO CARIRI-CEARENSE/LA SUPERFICIE DEL AGUA EN EL ORDEN CONSTITUCIONAL BRASILEÑO: EL CASO DE LA FUENTE DE LA BATATEIRA EN CARIRI-CEARENSE

    OpenAIRE

    Santos, Ivanna Pequeno dos; Universidade Regional do Cariri - URCA; Santos, Jahyra Helena Pequeno Dos; Universidade Regional do Cariri-URCA

    2015-01-01

    O artigo trata da dominialidade da água, a partir do caso da Fonte da Batateira na região do Cariri-Cearensa, no qual particulares possuidores de títulos de direitos de uso da água alocam as águas com base em uma lei de 1854.Tem como objetivo discutir o regime de propriedade da água doce no Brasil e demonstrar que o processo de publicização das águas, iniciado com o atual texto constitucional, invalida as chamadas águas particulares, previstas no Código de Águas. As águas constituem bens inal...

  5. Superficial siderosis in the central nervous system

    Energy Technology Data Exchange (ETDEWEB)

    Pythinen, J. [Oulu Univ. (Finland). Dept. of Diagnostic Radiology; Paeaekkoe, E. [Oulu Univ. (Finland). Dept. of Diagnostic Radiology; Ilkko, E. [Oulu Univ. (Finland). Dept. of Diagnostic Radiology

    1995-02-01

    We describe a rare entity, superficial siderosis of the central nervous system, due to multiple small episodes of subarachnoid haemorrhage from any source. Non-specific neurological findings are associated with deposition of iron-containing pigments in the leptomeninges and superficial layers of the cortex. T2-weighted magnetic resonance imaging demonstrates characteristic low signal in the meninges. (orig.)

  6. Effect of the surface treatment of plain carbon fiber posts on the retention of the composite core: an in vitro evaluation Efeito do tratamento superficial de pinos de fibra de carbono lisos na retenção da resina de preenchimento: uma avaliação in vitro

    Directory of Open Access Journals (Sweden)

    Adriana Ferreira QUINTAS

    2001-03-01

    secos e então ajustados à matriz de resina, colocando-se a resina composta autopolimerizável na porção coronária para um núcleo de preenchimento de 3 mm. As amostras foram submetidas a termociclagem e armazenadas em água destilada por uma semana. Os espécimes foram testados por meio de ensaios mecânicos de tração, à velocidade de 0,5 mm/min, até o deslocamento do conjunto ou a fratura da resina do núcleo. As conclusões foram as seguintes: a o tratamento superficial nos grupos tratados por meio de jateamento (Grupo A, pontas diamantadas marcadoras de profundidade para facetas laminadas (Grupo C e alteração da morfologia da extremidade coronária (Grupo D conferiu aos pinos lisos valores de retenção comparáveis aos dos pinos serrilhados (Grupo E nos ensaios de tração, porém sem diferença estatisticamente significativa entre estes grupos; b os pinos tratados por meio de pontas diamantadas de granulação média (Grupo B obtiveram valores de retenção menores que os demais grupos.

  7. Caracterização química e espectroscópica de ácidos húmicos e fúlvicos isolados da camada superficial de latossolos brasileiros Chemical and spectroscopic characterization of humic and fulvic acids isolated from the surface layer of Brazilian oxisols

    Directory of Open Access Journals (Sweden)

    Leonardo Barros Dobbss

    2009-02-01

    Full Text Available A determinação de características estruturais das substâncias húmicas (SH é essencial para o entendimento do comportamento da química de superfície dos solos altamente intemperizados. Ácidos húmicos (AH e fúlvicos (AF obtidos no horizonte superficial de sete Latossolos de diferentes regiões do Brasil foram caracterizados mediante a análise da composição elementar, da acidez total e carboxílica, da capacidade de oxidação e por métodos espectroscópicos. As substâncias húmicas apresentaram elevado grau de oxidação, acidez e massa molecular relativamente baixas, caracterizando a matéria orgânica alcalina solúvel como bastante reativa. Os AF apresentaram menor teor de C e maior de O do que os AH. Foram observados valores elevados da relação entre absorvância em 465 e 665 nm (E4/E6 e a massa molar média foi estimada em 1.106 e 618 g mol-1 para AH e AF, respectivamente. A menor massa molar estimada para os AF foi compatível com sua menor complexidade química revelada pelos espectros de IV-TF, que apresentaram menor número de bandas de absorção bem definidas. A ressonância magnética nuclear (RMN ¹H mostrou a presença de H mais hidrofóbico nos AH e de H ligado a átomos de O em maior quantidade nos AF, compatível com sua maior acidez e, portanto, solubilidade em qualquer valor de pH. Apesar da mesma funcionalidade química encontrada tanto nos AH como nos AF, a análise estatística permitiu separar a maioria desses ácidos, indicando a presença de frações humificadas de natureza química individual.The determination of structural characteristics of humic substances (HS is essential to understand the behavior of surface chemistry of highly weathered soils. Humic acids (HA and fulvic acids (FA isolated from the surface horizon of seven Oxisols of different locations of Brazil were characterized by analyses of elemental composition, total and carboxylic acidity, oxidation capacity and spectroscopic techniques

  8. Cochlear implantation in superficial siderosis.

    Science.gov (United States)

    Kim, Chong-Sun; Song, Jae-Jun; Park, Min-Hyun; Kim, Young Ho; Koo, Ja-Won

    2006-08-01

    Superficial siderosis (SS) of the central nervous system has been thought to be a rare condition that generates progressive hearing loss, ataxia, pyramidal signs, and dementia. The main cause of hearing loss by SS is thought to be neuronal. Because there is no histopathologic report of the human temporal bone in SS, there is a debate about the possibility of cochlear involvement. We present a 25-year-old man who was investigated for bilateral progressive sensorineural hearing loss and vestibular failure after head trauma. On brain MRI, SS of the central nervous system was detected. Distortion product otoacoustic emission (DPOAE) and auditory brainstem response (ABR) showed no response on both sides. However, integrity of the eighth nerve was proved by the electrical ABR test on the right side and the patient benefited significantly from cochlear implantation. The sensorineural hearing loss in SS seems to be related to cochlear damage as well as neuronal damage. So, cochlear implantation would be a hearing rehabilitation modality for the sensorineural hearing loss caused by SS.

  9. Silicon superficial texturing bypulsed laser

    Directory of Open Access Journals (Sweden)

    Ponce, L.

    1998-04-01

    Full Text Available Texturing of silicon surfaces with pulsed laser is made. The method is based on the formation of laser- induced periodic surface structure (LIPSS. The process is temporary characterized through the dynamic reflectance, thus determining the formation threshold of the structure. Relation between the different textures and the spectral reflectance of the samples before and after the treatment is also characterized. The mean value of spectral reflectance decreases up to a 6 %.

    Se realiza el texturado de superficies de silicio con un láser pulsado mediante la formación de una estructura periódica inducida por láser (LIPSS. Se caracteriza el proceso mediante reflectancia dinámica, determinándose el umbral de formación de la estructura. Se caracteriza el nivel de texturado midiendo la reflectancia espectral de las muestras antes y después del tratamiento. El valor medio de la reflectancia espectral disminuye hasta el 6 %.

  10. Área superficial específica, porosidade da fração argila e adsorção de fósforo em dois latossolos vermelhos Specific surface área and porosity of the clay fraction and phosphorus adsorption in two rhodic ferralsols

    Directory of Open Access Journals (Sweden)

    Raphael Maia Aveiro Cessa

    2009-10-01

    Full Text Available A porosidade da fração argila é muito importante para entendimento dos fenômenos físico-químicos que estão relacionados com a área superficial específica das partículas sólidas. Por meio de isotermas de adsorção e dessorção com N2, avaliaram-se a área superficial específica (S BET e a porosidade das frações argila de Latossolos Vermelhos do Estado de Mato Grosso do Sul, sendo um distroférrico (LVdf e outro distrófico (LVd, além de caulinita natural (KGa2, goethita (Gt e hematita (Hm sintéticas. Resultados referentes à S BET e à porosidade das partículas foram relacionados à adsorção máxima de P (Pmáx determinada pela isoterma de Langmuir. A classe de poros predominante nas frações argila avaliadas foi de mesoporos. As frações argila extraídas dos solos e KGa2 adsorveram quantidades semelhantes de P por unidade de área, mas diferentes das quantidades de P adsorvido por Gt e Hm. Tal diferença, possivelmente, deu-se em função da quantidade e distribuição dos grupamentos OH em superfície, bem como imperfeições superficiais dos materiais. Os óxidos de Fe e de Al e outros materiais amorfos das frações argila extraídas dos solos foram mais importantes que a caulinita para a adsorção de P. A caulinita, embora sendo o filossilicato de maior representatividade nas frações argila de LVDf e LVD, teve menor importância sobre a adsorção de P.The porosity of the clay fraction is very important for the understanding of the physicochemical phenomena which are relate to the specific surface area of solid particles. The specific surface area (S BET and porosity of clay fractions of two Rhodic Ferralsols in the state of Mato Grosso do Sul, Brazil, natural kaolinite (KGa2, synthetic goethite (Gt and hematite (Hm were evaluated through adsorption and desorption isotherms of N2.. Results concerning S BET and particle porosity were related to the maximum P adsorption capacity (Pmax estimated by the Langmuir

  11. Scanning electron microscopy of superficial white onychomycosis*

    Science.gov (United States)

    de Almeida Jr., Hiram Larangeira; Boabaid, Roberta Oliveira; Timm, Vitor; Silva, Ricardo Marques e; de Castro, Luis Antonio Suita

    2015-01-01

    Superficial white onychomycosis is characterized by opaque, friable, whitish superficial spots on the nail plate. We examined an affected halux nail of a 20-year-old male patient with scanning electron microscopy. The mycological examination isolated Trichophyton mentagrophytes. Abundant hyphae with the formation of arthrospores were found on the nail's surface, forming small fungal colonies. These findings showed the great capacity for dissemination of this form of onychomycosis. PMID:26560225

  12. Treatment of superficial mycoses: review - part II

    OpenAIRE

    2013-01-01

    Superficial fungal infections of the hair, skin and nails are a major cause of morbidity in the world. Choosing the right treatment is not always simple because of the possibility of drug interactions and side effects. The first part of the article discusses the main treatments for superficial mycoses - keratophytoses, dermatophytosis, candidiasis, with a practical approach to the most commonly-used topical and systemic drugs , referring also to their dosage and duration of use. Promising new...

  13. Treatment of superficial mycoses: review - part II*

    OpenAIRE

    2013-01-01

    Superficial fungal infections of the hair, skin and nails are a major cause of morbidity in the world. Choosing the right treatment is not always simple because of the possibility of drug interactions and side effects. The first part of the article discusses the main treatments for superficial mycoses - keratophytoses, dermatophytosis, candidiasis, with a practical approach to the most commonly-used topical and systemic drugs , referring also to their dosage and duration of use. Promising new...

  14. Efeito da variabilidade da precipitação pluvial e do uso e manejo do solo sobre o escoamento superficial e o aporte de sedimento de uma bacia hidrográfica do Distrito Federal Effect of rainfall variability and land use on runoff and sediment in the Pipiripau river basin, in the Distrito Federal, Brazil

    Directory of Open Access Journals (Sweden)

    Henrique Marinho Leite Chaves

    2008-02-01

    Full Text Available O objetivo do presente trabalho foi avaliar o efeito da variabilidade da precipitação sobre o escoamento direto e sobre o aporte de sedimento na bacia do rio Pipiripau (A = 235 km², no Distrito Federal. Cinco anos típicos da série de precipitação foram selecionados: o ano mais úmido, o ano mais seco, o ano médio e dois anos que representaram os desvios-padrão da série (médio-seco e médio-úmido. Depois de o modelo ser calibrado com dados diários de chuva e vazão da bacia, simulações foram realizadas para cada evento chuvoso de cada um dos cinco anos selecionados da série, e o escoamento direto e o aporte de sedimento da bacia foram calculados com a MUSLE em três diferentes cenários de uso e manejo do solo: o cenário atual, onde predomina o preparo convencional do solo (PC nas áreas de agricultura da bacia; o passado recente, em que predominava o Cerrado nativo (CER; e o cenário de plantio direto (PD, nas áreas de agricultura da bacia. Apesar de as vazões médias anuais observadas terem apresentado relação linear com os volumes de precipitação pluvial anual, em todos os cenários, o escoamento direto e o aporte de sedimento apresentaram aumento exponencial com o aumento da precipitação pluvial anual, sendo esse mais pronunciado na condição de preparo convencional (PC do que nos outros cenários estudados (CER e PD. O aumento observado pode ser explicado pela não-linearidade do modelo MUSLE ao volume de precipitação e ao volume de escoamento.The objective of this study was to evaluate the effect of the rainfall variability on the runoff and sediment amount in the Pipiripau river basin (A = 235 km², in the Distrito Federal, Brazil. To represent the climatic variability of the historic precipitation series, 5 years were selected: the moistest, the driest, an average, and 2 years representing the standard deviations from the series (half-wet and half-dry. After the calibration of the model with basin rainfall and

  15. Effect of repeated microwave disinfection on surface roughness and baseplate adaptation of denture resins polymerized by different techniques = Efeito da desinfecção repetida por microondas sobre rugosidade superficial e adaptação de bases de resinas polimerizadas por diferentes técnicas

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    Campos, Maria Agnese Pinto de

    2009-01-01

    Full Text Available Objetivo: Avaliar o efeito cumulativo de dois protocolos de desinfecção por energia de micro-ondas (Protocolo 1: 690 W/6 min; Protocolo 2: 345 W/6 min na rugosidade superficial (Ra e adaptação de bases de dentadura de duas resinas polimerizadas por micro-ondas (Onda Cryl ou banho de água quente (QC-20. Metodologia: Para Ra, espécimes retangulares foram fabricados e divididos de acordo com o tratamento de desinfecção (n=8/grupo: 1 Controle (sem desinfecção, 2 Protocolo 1, e 3 Protocolo 2. Para medir Ra usou-se um rugosímetro no baseline (T0 e após 2 procedimentos de desinfecção (T1, T2 com intervalo de 7 dias de imersão em água destilada. Para avaliar a estabilidade dimensional, bases maxilares foram divididas nos 3 grupos (n=6 e a adaptação foi medida por pesagem de uma película de silicone que reproduzia o espaço entre a base de resina e um modelo-mestre metálico. Resultados: Para Ra, houve interação significativa entre tipo de resina e técnica de polimerização, tratamento de desinfecção, e número de procedimentos desinfecção (P<0,001. Os grupos Protocolo 2 e controle apresentaram aumento semelhante de Ra ao longo do tempo, mas os grupos Protocolo 1 tiveram uma redução significativa de Ra em T2. A adaptação da base foi afetada por uma interação significante entre tratamento de desinfecção e número de procedimentos de desinfecção (P<0,001; o Protocolo 1 apresentou a maior média em T2. Conclusão: Onda Cryl teve maiores alterações de Ra e adaptação que QC-20. O Protocolo 1 promoveu dano geral para ambos os tipos de resina após dois procedimentos de desinfecção

  16. Superficial Temporal Artery Pseudoaneurysm: A Case Report

    Science.gov (United States)

    Younus, Syed Muneeb; Imran, Muhammad; Qazi, Rabia

    2015-01-01

    Pseudoaneurysms of the superficial temporal artery are an uncommon vascular lesion of the external carotid system and most often the result of blunt head trauma. The frequency of pseudoaneurysms of the superficial temporal artery developing after craniotomy is exceedingly low and only a few cases have been reported. We present a case of pseudoaneurysm of this type in a 45-year-old male who underwent craniotomy for excision of meningioma. One month postoperatively, the craniotomy flap exhibited an enormous diffuse pulsate swelling. The suspected diagnosis of pseudoaneurysm arising from superficial temporal artery was confirmed on angiography. Surgical excision was done and no recurrences of the tumor or aneurysm were noted on subsequent follow up. PMID:26501064

  17. Treatment of superficial mycoses: review - part II*

    Science.gov (United States)

    Dias, Maria Fernanda Reis Gavazzoni; Bernardes-Filho, Fred; Quaresma-Santos, Maria Victória Pinto; Amorim, Adriana Gutstein da Fonseca; Schechtman, Regina Casz; Azulay, David Rubem

    2013-01-01

    Superficial fungal infections of the hair, skin and nails are a major cause of morbidity in the world. Choosing the right treatment is not always simple because of the possibility of drug interactions and side effects. The first part of the article discusses the main treatments for superficial mycoses - keratophytoses, dermatophytosis, candidiasis, with a practical approach to the most commonly-used topical and systemic drugs , referring also to their dosage and duration of use. Promising new, antifungal therapeutic alternatives are also highlighted, as well as available options on the Brazilian and world markets. PMID:24474103

  18. Treatment of superficial mycoses: review. Part II.

    Science.gov (United States)

    Dias, Maria Fernanda Reis Gavazzoni; Bernardes-Filho, Fred; Quaresma-Santos, Maria Victória Pinto; Amorim, Adriana Gutstein da Fonseca; Schechtman, Regina Casz; Azulay, David Rubem

    2013-01-01

    Superficial fungal infections of the hair, skin and nails are a major cause of morbidity in the world. Choosing the right treatment is not always simple because of the possibility of drug interactions and side effects. The first part of the article discusses the main treatments for superficial mycoses - keratophytoses, dermatophytosis, candidiasis, with a practical approach to the most commonly-used topical and systemic drugs , referring also to their dosage and duration of use. Promising new, antifungal therapeutic alternatives are also highlighted, as well as available options on the Brazilian and world markets.

  19. Effectiveness of disinfection with alcohol 70% (w/v of contaminated surfaces not previously cleaned Eficacia de la desinfección con alcohol al 70% (p/v de superficies contaminadas sin limpieza previa Eficácia da desinfecção com álcool 70% (p/v de superfícies contaminadas sem limpeza prévia

    Directory of Open Access Journals (Sweden)

    Maurício Uchikawa Graziano

    2013-04-01

    el área de la salud, especialmente para la Enfermería, que es la que más ejecuta procedimientos de limpieza/desinfección cotidiana o de rutina de esas superficies de trabajo. OBJETIVO: avaliar a eficácia desinfetante do álcool 70% (p/v sob fricção, sem limpeza prévia, nas superfícies de trabalho, como procedimento de desinfecção concorrente em Serviços de Saúde. MÉTODO: foi desenvolvido estudo experimental laboratorial, randomizado e unicegado. As amostras foram constituídas de superfícies esmaltadas, intencionalmente contaminadas com microrganismos Serratia marcescens ATCC 14756 106 Unidades Formadoras de Colônias/mL, acrescidos de 10% de saliva humana, e submetidas ao procedimento de desinfecção sem limpeza prévia. Os resultados foram comparados à desinfecção precedida da limpeza. RESULTADOS: houve redução de seis logaritmos da população microbiana inicial, igualmente nos grupos com e sem limpeza prévia (p=0,440 e uma carga microbiana residual ≤ 102 Unidades Formadoras de Colônias. CONCLUSÃO: a pesquisa demonstrou a aceitabilidade da prática avaliada, trazendo importante resposta para a área da saúde, especialmente à enfermagem, que mais executa os procedimentos de limpeza/desinfecção concorrentes dessas superfícies de trabalho.

  20. ESTUDO DO ESCOAMENTO SUPERFICIAL NA BACIA HIDROGRÁFICA DO RIO IVAÍ, PARANÁ, BRASIL

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    Manoel Luiz dos Santos

    2014-03-01

    Full Text Available Mediante a  aplicação da equação proposta por Kirby (1976,  aliada a levantamento das variáveis físicas  da bacia do Ivaí, este trabalho se propõe a analisar o comportamento do escoamento superficial nessa importante bacia hidrográfica do estado do Paraná. Para tanto, foram levantadas as variáveis precipitação média anual, precipitação média por evento, capacidade de campo dos solos e evapotranspiração. Essas variáveis foram  espacializadas e analisadas com o suporte das características geológicas, geomorfológicas, pedológicas e climáticas da bacia hidrográfica. O resultado da análise foi integrado, em ambiente digital, em um Sistema de informação Geográfica, fornecendo uma carta síntese das taxas de escoamento superficial da bacia. O resultado mostra que no curso inferior da bacia hidrográfica, região do Arenito Caiuá (Kr, ocorrem as maiores taxas de escoamento superficial da bacia. Tal fato é atestado pela agressiva erosão que sofrem os solos desenvolvidos sobre estas litologias na região Noroeste do estado do Paraná.

  1. Superficial Urothelial Cancer in the Prostatic Urethra

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    Ziya Kirkali

    2006-01-01

    Full Text Available Transitional cell carcinoma (TCC is a multifocal disease of the urinary tract that can also involve the prostatic urethra (PU. The exact incidence of superficial involvement of the PU in patients with bladder TCC is not well known. Bladder TCC may involve the prostate in 12—40% of the patients and the degree of involvement can include urethral mucosa, ducts, acini, and stroma of the gland, which has been shown to affect the outcome. Risk factors for superficial urothelial cancer in the PU are high-grade, multifocal bladder TCC and presence of carcinoma in situ (CIS in the bladder. While visible tumors are easy to detect and resect, controversy still exists regarding the optimal technique to identify prostatic involvement by TCC. Prostatic urethral sampling by a transurethral resection biopsy or a cold-cup biopsy, particularly in the high-risk group of bladder cancer patients, has been recommended for detecting prostatic urethral involvement. Management of superficial prostatic involvement by TCC is also unclear. Currently, there is increasing recognition of the value of conservative treatment options with intravesical agents when there is superficial involvement of the PU. Particularly, intravesical bacillus Calmette-Guèrin (BCG seems to be an effective treatment alternative in the management of superficial involvement of the PU by TCC. Close follow-up by cystoscopy and PU biopsy at 3-month intervals, particularly in intermediate and high-risk patients who respond to intravesical therapy and in whom cystectomy is appropriate, is recommended in order to detect persistent tumor, recurrences, or progression.

  2. Superficial urothelial cancer in the prostatic urethra.

    Science.gov (United States)

    Kirkali, Ziya; Canda, A Erdem

    2006-02-28

    Transitional cell carcinoma (TCC) is a multifocal disease of the urinary tract that can also involve the prostatic urethra (PU). The exact incidence of superficial involvement of the PU in patients with bladder TCC is not well known. Bladder TCC may involve the prostate in 12-40% of the patients and the degree of involvement can include urethral mucosa, ducts, acini, and stroma of the gland, which has been shown to affect the outcome. Risk factors for superficial urothelial cancer in the PU are high-grade, multifocal bladder TCC and presence of carcinoma in situ (CIS) in the bladder. While visible tumors are easy to detect and resect, controversy still exists regarding the optimal technique to identify prostatic involvement by TCC. Prostatic urethral sampling by a transurethral resection biopsy or a cold-cup biopsy, particularly in the high-risk group of bladder cancer patients, has been recommended for detecting prostatic urethral involvement. Management of superficial prostatic involvement by TCC is also unclear. Currently, there is increasing recognition of the value of conservative treatment options with intravesical agents when there is superficial involvement of the PU. Particularly, intravesical bacillus Calmette-Guèrin (BCG) seems to be an effective treatment alternative in the management of superficial involvement of the PU by TCC. Close follow-up by cystoscopy and PU biopsy at 3-month intervals, particularly in intermediate and high-risk patients who respond to intravesical therapy and in whom cystectomy is appropriate, is recommended in order to detect persistent tumor, recurrences, or progression.

  3. Emprego de imageamento passivo na análise da variabilidade espacial da turbidez no espelho d'água do Lago Paranoá, Distrito Federal Use of passive imaging for the analysis of spatial variability of superficial water turbidity at the Lake Paranoá, Federal District, Brazil

    Directory of Open Access Journals (Sweden)

    Edilson de Souza Bias

    2013-03-01

    Full Text Available A água tem importante papel na sociedade humana, especialmente no Brasil. Seus usos são múltiplos, incluindo o abastecimento, produção energética e lazer, entre outros. A própria Política Nacional de Recursos Hídricos (Lei nº 9.433/97 traz entre seus artigos a sua importância segundo os seus usos múltiplos, priorizando o abastecimento humano e a dessedentacão de animais. Neste enfoque é importante considerar a qualidade físico-química da água para atender a estas demandas, escopo do enquadramento dos corpos d'água segundo seus usos preponderantes, com o objetivo de garantir qualidade compatível com os usos mais exigentes a que for destinada e diminuir os custos de combate à poluição mediante ações preventivas permanentes. Entre os vários parâmetros que buscam analisar a qualidade físico-química da substância busca-se entender a distribuição espacial da turbidez na superfície do lago, uma vez que a variação dos componentes que alteram este parâmetro pode ser detectada por meio do sensoriamento remoto passivo. A aplicação do Modelo linear de mistura espectral permitiu, de forma satisfatória, identificar a distribuição espacial da turbidez no espelho de água.The water has an important role in human society, especially in Brazil. Its uses are multiple, including supply, energy production, recreation and others. The National Policy for Water Resources (Law Nº 9.433/97 states in its articles the importance of water use in accordance to their multiple uses, prioritizing the supply for humans and animals. In this approach, it is important to consider the physical and chemical quality of water to meet these demands, scope of the legal framework applied to the Brazilian water bodies according to their main uses, in order to guarantee the water quality compatible with the most demanding uses and to reduce the costs of pollution control through ongoing preventive actions. Among the various parameters that seek to

  4. Formações venosas superficiais da fossa cubital: aspectos de interesse para a prática da Enfermagem Formaciones venosas superficiales de la fosa cubital: aspectos de interés para la práctica de Enfermería Superficial venous formation of the cubital fossa: aspects of interest for nursing practice

    Directory of Open Access Journals (Sweden)

    Nilton Alves

    2012-12-01

    Full Text Available O objetivo deste estudo é contribuir para o conhecimento que auxilie o profissional de enfermagem na identificação dos tipos mais comuns de formações venosas da região da fossa cubital e, ainda, enfocar a importância de estar sempre atento aos casos pouco comuns como o aqui relatado. Através de uma revisão bibliográfica, constatamos que as formações venosas dessa região podem ser classificadas em 5 tipos mais comuns, sendo o tipo II o mais frequente. Constatamos ainda, que a VICo é o local de punção mais indicado, seguido pela VIB. Descrevemos também uma variação anatômica, onde observamos ausência de comunicação entre VC e VB no nível da fossa cubital e VIA drenando na VB, estando presente a VCA.El objetivo de esta investigación es contribuir al conocimiento que auxilie al profesional de enfermería en la identificación de los tipos más comunes de formaciones venosas de la fosa cubital, además de advertir sobre la importancia de fijar la atención a los casos poco comunes, como lo aquí reportado. A través de la revisión bibliográfica, clasificamos las formaciones venosas de esta región en cinco tipos más comunes, siendo lo más frecuente el Tipo II. La utilización de la VICo se recomienda como el mejor sitio de punción, seguido por la VIB. Además, describimos una variación anatómica, donde se observó la ausencia de comunicación entre VC y VB a nivel de fosa cubital y VIA drenando en VB, con presencia de la VCA.The aim of this study is to contribute to the knowledge to assists the nursing staff to identify the most common types of venous formations of the cubital fossa region, and also focus on the importance of always being alert to unusual cases as that reported here. Through a literature review, we found that the venous formations of this region can be classified into five common types, bring the Type II the was most frequent. We also found that MCV is considered the best puncture site, followed by MBV

  5. What factors control superficial lava dome explosivity?

    Science.gov (United States)

    Boudon, Georges; Balcone-Boissard, Hélène; Villemant, Benoît; Morgan, Daniel J.

    2015-09-01

    Dome-forming eruption is a frequent eruptive style and a major hazard on numerous volcanoes worldwide. Lava domes are built by slow extrusion of degassed, viscous magma and may be destroyed by gravitational collapse or explosion. The triggering of lava dome explosions is poorly understood: here we propose a new model of superficial lava-dome explosivity based upon a textural and geochemical study (vesicularity, microcrystallinity, cristobalite distribution, residual water contents, crystal transit times) of clasts produced by key eruptions. Superficial explosion of a growing lava dome may be promoted through porosity reduction caused by both vesicle flattening due to gas escape and syn-eruptive cristobalite precipitation. Both processes generate an impermeable and rigid carapace allowing overpressurisation of the inner parts of the lava dome by the rapid input of vesiculated magma batches. The relative thickness of the cristobalite-rich carapace is an inverse function of the external lava dome surface area. Explosive activity is thus more likely to occur at the onset of lava dome extrusion, in agreement with observations, as the likelihood of superficial lava dome explosions depends inversely on lava dome volume. This new result is of interest for the whole volcanological community and for risk management.

  6. HISTOPATHOLOGY OF MARGINAL SUPERFICIAL PERIODONTIUM AT MENOPAUSE

    Directory of Open Access Journals (Sweden)

    A. Georgescu

    2012-03-01

    Full Text Available Premises: Sexual hormones may affect the general health condition of women, as early as puberty, continuing during pregnancy and also after menopause. Variations of the hormonal levels may cause different – either local or general – pathological modifications. Sexual hormones may also affect periodontal status, favourizing gingival inflammations and reducing periodontal resistance to the action of the bacterial plaque. Scope: Establishment of the correlations between the debut or the manifestation of menopause and the modifications produced in the superficial periodontium. Materials and method: Clinical and paraclinical investigations were performed on female patients with ages between 45 and 66 years, involving macroscopic, microscopic and radiological recording of the aspect of the superificial periodontium (gingiva. Results: Analysis of the histological sections evidenced atrophic and involutive modifications in the marginal superficial periodontium of female patients at menopause. Conclusions: Sexual hormones intervene in the histological equilibrium of the marginal superficial periodontium, influencing the periodontal health status, which explains the correlation between the subjective symptomatology specific to menopause and the histopatological aspect at epithelial level.

  7. Evaluation of the impact of farming activity in the water quality in surface catchment areas in hydrographic basin from Mogi-Guacu and Pardo Rivers, Sao Paulo; Avaliacao do impacto da atividade agropecuaria na qualidade da agua em areas de captacao superficial nas bacias hidrograficas dos Rios Mogi-Guacu e Pardo, Sao Paulo

    Energy Technology Data Exchange (ETDEWEB)

    Katsuoka, Lidia

    2001-07-01

    This study was performed in 10 small basins located in the Mogi-Guacu and Pardo Rivers, in the Northeastern area of Sao Paulo State. The land belonging of these basins is used to grow row crops of potato, coffee and pasture areas. This study aimed to characterize small basins, to evaluate water and sediment quality and to correlate basic aspects of climatology, hydrology, toxicology and land uses to the physical, chemical and toxicological characteristics of the water in the streams. Geographic Information System (GIS) was used as a tool of evaluation of land uses and risk assessment was performed for a final evaluation. The samplings were carried out from June/1999 to June/2000 in the 13 collecting points. It was verified that water quality is dependent upon the rainy and dry periods and the harvest periods. In the beginning of rainy periods were found large concentrations of metals and traces of herbicides leachate from soil and, in the dry period the same event was verified, caused by concentration of the water. In August, September and October phosphorus concentrations were very low getting an improvement in the water quality. Al, Fe and Mn are majority elements of chemical compositions of rocks of the study area, and exceed the Brazilian Guidelines. The stream waters were classified as 44% oligotrophic, 42% mesotrophic and 14% eutrophic. Jaguari-Mirim River presented the largest values of Trophic Index (TI). Sediment analyses showed a great variety of organic compounds coming from anthropogenic activities (industrial and farming activity). Toxicity tests with hyalella azteca in the sediments presented toxicity for sediments from Sao Joao da Boa Vista and Divinolandia. A methodology was developed for organochlorinated pesticides by gas chromatography coupled to mass spectrometry (GCMS). The presence of organochlorinated pesticides was not verified. (author)

  8. Estructura electrónica de superficies: estados de superficie y estados resonantes del calcio

    OpenAIRE

    H. Herrera; César Mora

    2006-01-01

    En este artículo presentamos un estudio detallado de la estructura electrónica de bandas de superficies orientadas (001) y (110) de cristales cúbicos centrados en la cara del Ca. Para nuestro estudio utilizamos la aproximación de enlace fuerte y el método de acoplamiento de la función de Green de superficie. Primero, construimos hamiltonianos de enlace fuerte en el formalismo de Slater Koster (SK). Utilizamos una base ortogonal de nueve orbitales atómicos (spd) por átomo en la celda unitaria....

  9. A unique variation of superficial palmar arch

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    Jiji PJ

    2009-09-01

    Full Text Available We present a unique variation in the arterial pattern of superficial palmar arch in which it was completed by one of the large terminal branches of radial artery. The origin of the arteria radialis indicis was also peculiar that it was arising from the communicating branch of the radial artery and further reinforced by the first dorsal metacarpal artery that joined it after reaching the volar aspect. Pertinent anatomical knowledge regarding the variations of the palmar arch is significant for the purposes of microvascular repairs and re-implantations.

  10. Avaliação do desempenho diagnóstico e do valor de corte para o índice de respiração rápida e superficial na predição do insucesso da extubação Evaluation of the diagnostic performance and cut-off value for the rapid shallow breathing index in predicting extubation failure

    Directory of Open Access Journals (Sweden)

    Aline Roberta Danaga

    2009-06-01

    Full Text Available OBJETIVO: Avaliar o desempenho diagnóstico do índice de respiração rápida e superficial (IRRS na predição do insucesso da extubação de pacientes adultos em terapia intensiva e verificar a adequação do valor de corte clássico para esse índice. MÉTODOS: Estudo prospectivo realizado na unidade de terapia intensiva de adultos do Hospital das Clínicas da Faculdade de Medicina de Botucatu, através da avaliação do IRRS em 73 pacientes consecutivos considerados clinicamente prontos para extubação. RESULTADOS: O IRRS com valor de corte clássico (105 ciclos/min/L apresentou sensibilidade de 20% e especificidade de 95% (soma = 115%. A análise da curva receiver operator characteristic (ROC demonstrou melhor valor de corte (76,5 ciclos/min/L, o qual forneceu sensibilidade de 66% e especificidade de 74% (soma = 140%, e a área sob a curva ROC para o IRRS foi de 0,78. CONCLUSÕES: O valor de corte clássico do IRRS se mostrou inadequado nesta casuística, prevendo apenas 20% dos pacientes com falha na extubação. A obtenção do novo valor de corte permitiu um acréscimo substancial de sensibilidade, com aceitável redução da especificidade. O valor da área sob a curva ROC indicou satisfatório poder discriminativo do índice, justificando a validação de sua aplicação.OBJECTIVE: To evaluate the diagnostic performance of the rapid shallow breathing index (RSBI in predicting extubation failure among adult patients in the intensive care unit and to determine the appropriateness of the classical RSBI cut-off value. METHODS: This was a prospective study conducted in the adult intensive care unit of the Botucatu School of Medicine Hospital das Clínicas. The RSBI was evaluated in 73 consecutive patients considered clinically ready for extubation. RESULTS: The classical RSBI cut-off value (105 breaths/min/L presented a sensitivity of 20% and a specificity of 95% (sum = 115%. Analysis of the receiver operator characteristic (ROC curve

  11. Isolated superficial peroneal nerve lesion in pure neural leprosy: case report Acometimento isolado do nervo peroneiro superficial na lepra neurítica pura: relato de caso

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    Marcos R.G. de Freitas

    2004-06-01

    Full Text Available Patients with leprosy may have only nerve involvement without skin changes. These cases are known as pure neural leprosy and can be seen in 10% of leprosy patients. Most patients have mononeuritic or multiple mononeuritic neuropathy patterns. The isolated lesion of the superficial peroneal nerve is uncommonly seen. We report a patient with involvement of this nerve in which there was no thickening of superficial nerves. The performed nerve biopsy showed inflammatory infiltration, loss of fibers and presence of Mycobacterium leprae. We believe that in prevalent leprosy countries we should take in mind the possibility of isolated pure neural leprosy in some patients without skin lesion. In these cases the diagnosis of leprosy is impossible on clinical grounds and nerve biopsy is mandatory.Em alguns casos de lepra podemos encontrar acometimento de nervos periféricos sem manifestações cutâneas. É a denominada lepra neurítica pura que pode ocorrer em até 10% dos casos desta doença. Na maioria das vezes predominam quadros de mononeuropatia ou mononeuropatia múltipla. O acometimento isolado do nervo peroneiro superficial tem sido pouco relatado. Referimos a uma paciente com acometimento isolado deste nervo sem hipertrofia de troncos nervosos. A biópsia realizada mostrou presença de infiltrado inflamatório, perda moderada de fibras e presença do Mycobacterium leprae. Acreditamos que, em países onde a lepra é endêmica, diante de acometimento isolado de nervos periféricos, deve-se pensar na possibilidade de se tratar da forma neurítica pura desta moléstia, mesmo em pacientes sem alterações dermatológicas. Nestes casos o diagnóstico só será possível com a realização de biópsia de nervo superficial.

  12. Superficial microcirculation flow measurement using polarized light

    Science.gov (United States)

    Wu, Jiwei; Morgan, S. P.; Xiao, Yunshi

    2008-12-01

    Depth discrimination of polarized light is used in investigating laser Doppler measurement of the superficial microcirculation in tissue. Using polarization Monte Carlo simulation, temporal point spread function and power spectral distribution of backscattered polarization remaining light firstly are used to prove polarized light to be valid in measuring moving blood cell perfusion and mean flow velocity. Then simulation of layered medium model demonstrate that relationships between blood flow perfusion and mean frequency shift are linear to medium flowing velocity, and the Doppler shift information in polarization remaining light mainly comes from lower layer medium up to about 14 times of mean free path (MFP) of medium investigated and can be considered that Doppler effects come only from lower layer of the medium. Simulations in three-layer tissue model show that moving blood cell perfusion and mean blood cell moving velocity calculated from polarization remaining are much more sensitive to lower layer flow velocity variation, and more irrelevant to deeper layer flow rate fluctuations, that further confirms Doppler measurement from polarization remaining light to be effective for superficial microcirculation in tissue. Factors affecting Laser Doppler measurement like medium absorption, percentage of moving particles in blood detector size are discussed.

  13. Atributos químicos do solo em função da aplicação superficial de calcário em sistema de integração lavoura-pecuária submetido a pressões de pastejo em plantio direto Chemical attributes of an oxisol under no-tillage submitted to surface liming and distinct grazing pressures in a crop-livestock integration system

    Directory of Open Access Journals (Sweden)

    João Paulo Cassol Flores

    2008-12-01

    Full Text Available A utilização de extensas áreas usadas unicamente com culturas para cobertura do solo no inverno para pastejo de animais para produção de carne ou leite pode se tornar uma fonte alternativa de renda aos produtores de grãos no verão, no sul do Brasil. A presença de bovinos em áreas utilizadas apenas com lavouras em plantio direto pode, no entanto, promover alterações em atributos do solo, cuja magnitude depende do manejo adotado. Este trabalho teve por objetivo avaliar o efeito de diferentes pressões de pastejo sobre a correção da acidez do solo a partir da aplicação superficial de calcário em um Latossolo Vermelho sob plantio direto. Os tratamentos consistiram do manejo do pasto em diferentes alturas (10, 20, 30 e 40 cm, além de áreas sem pastejo, aplicadas durante o inverno. Em dezembro de 2001, foi feita uma amostragem de solo para avaliação de atributos químicos do solo após o primeiro ciclo de pastejo, nas camadas de 0-25, 2,5-5, 5-7,5, 7,5-10, 10-12,5, 12,5-15, 15-17,5, 17,5-20 e 20-25 cm. Na seqüência, foram aplicados 4,5 t ha-1 (PRNT 62 % de calcário em superfície, em toda a área, sendo cultivada soja em sucessão ao pastejo. Amostragens de solo seguiram-se ao final do primeiro, segundo, terceiro, quarto e quinto ciclos de soja, correspondendo aos 6, 12, 24, 36 e 48 meses após a aplicação de calcário. Foram avaliados: o pH-H2O; o índice SMP; os teores de Ca, Mg, K e Al trocáveis e de carbono orgânico total (COT. A aplicação superficial de calcário foi eficiente na correção da acidez, de forma variável em profundidade, com o atributo químico avaliado e com o tempo, atingindo até 25 cm de profundidade. A presença de bovinos em pastejo na área incrementou o efeito em profundidade da calagem superficial. As diferentes adições de resíduo ao solo não afetaram os teores de COT do solo.The use of large areas occupied only with winter soil cover crops for cattle grazing may become an alternative

  14. Internet: Más Allá de la superficie

    Directory of Open Access Journals (Sweden)

    Diego Andrés Tovar Cardozo

    2015-01-01

    Full Text Available El presente artículo expone un enfoque técnico de la Internet que da a conocer algunas características de su estructura, la cual muestra dos sectores distintos en donde se puede encontrar la información, es decir, esta se encuentra distribuida en niveles o capas de manera parcial o restringida, integrada o desagregada, todo ello dependiendo de lo que el usuario requiera realmente. La forma correcta para acceder a la información requerida está en saber a dónde ir a buscarla, la web profunda es información no visible para el usuario común que no tiene la habilidad de búsqueda, por lo cual se hace necesario verificar el tipo, la calidad y veracidad de la información a obtener antes de proceder a usar la información encontrada con los buscadores tradicionales. Acceder a Internet sin saber que existe una falsa cortina utilizada por la mayoría de los buscadores convencionales, es limitar las capacidades de navegar en un océano de información valiosa, en ello radica la importancia de conocer la web desde lo superficial (Surface Web a lo profundo (Deep Web.

  15. Inmersiones condicionadas de grafos en superficies y seudosuperficies.

    Directory of Open Access Journals (Sweden)

    Fedriani Martel, E. M.

    1999-01-01

    Full Text Available En este trabajo se procede a recapitular resultados conocidos sobre el problema de caracterizar los grafos que admiten inmersiones en superficies y en seudosuperficies con todos los vértices en la misma cara y se da una caracterización original de los grafos con dicha propiedad en seudosuperficies que surgen de manera natural y que han sido tratadas en la literatura especializada. Se comienza desarrollando algunos conceptos necesarios para la exposición de los problemas que se tratan, pero se suponen conocidos otros básicos de la Teoría de Grafos. Los resultados relacionados llevan de forma consecuente al planteamiento de otros problemas cuyas resoluciones originales también se incluyen. En cuanto a los objetivos finales que se pretenden lograr con esta comunicación, se basan, sobre todo, en aprovechar los resultados obtenidos por la Teoría de Grafos para resolver problemas pertenecientes a otras áreas, como la Economía. Se termina exponiendo un motivo topológico por el que estos estudios sobre las inmersiones y las inmersiones peri-S se hallan próximas a la Economía.

  16. Temperatura superficial de materiais utilizados para cobertura individual de bezerreiros

    Directory of Open Access Journals (Sweden)

    Janice M. C. Barnabé

    2014-05-01

    Full Text Available Propôs-se, com este trabalho avaliar, por meio de imagens térmicas, a temperatura superficial das coberturas de abrigos individuais para bezerras na fase de aleitamento. O período experimental foi de janeiro a março de 2012, com duração de 56 dias, conduzido com 24 abrigos individuais para bezerras Girolando. Os tratamentos consistiram em três tipos de cobertura: palha de palmeira, telha de polímero reciclado e telha de cimento amianto. O delineamento experimental adotado foi o inteiramente casualizado efetuando-se a comparação entre as médias pelo teste de Tukey (P < 0,05. Os resultados mostraram diferença significativa entre os tratamentos estudados e as telhas recicladas apresentaram menores valores de temperatura média na superfície superior, em todos os horários analisados sendo o valor máximo encontrado da ordem de 36,9 ºC e o mínimo de 14,4 ºC. Os abrigos cobertos por palha e com telhas recicladas mostraram melhor desempenho térmico em relação à cobertura de fibrocimento, provavelmente indicando melhor condição de conforto térmico aos animais alojados.

  17. Surface activity evaluation of an arabinose ester as water/oil demulsifier at severe conditions of temperature, salinity and pH; Avaliacao da atividade superficial de um ester de arabinose, como desemulsificante agua/oleo, em condicoes severas de temperatura, salinidade e pH

    Energy Technology Data Exchange (ETDEWEB)

    Borges, Mauricio Rodrigues; Garcia, Rosangela Balaban; Santos, Jaciara Alves dos; Vieira, Mariane; Silva, Luciana Carvalho; Campos, Viviane de Oliveira; Silva, Rayane Araujo da; Santos, Telma Pitanga dos [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil)

    2008-07-01

    This work had for objective to compare the superficial properties of an arabinose ester, no-ionic, nontoxic, biodegradable, with two commercial products: the first one based on sodium dodecyl sulfate and the second one based on poly-oxy alkylene phenol formaldehyde. The arabinose ester was synthesized on the Petroleum Research Laboratory - UFRN, through enzymatic catalysis by protease from Bacillus subtilis, using arabinose and vegetable oil, in organic medium. In previous work [1], this sugar ester was evaluated as a possible water/oil demulsifier and the results were compared with the results of the commercial product based on poly-oxy alkylene phenol formaldehyde, showing that, for certain reaction conditions, the sugar ester presented better acting (71%) that the commercial product (33%) as demulsifier. In this work, the stability of this arabinose ester was evaluated in severe conditions of temperature, salinity and pH, through superficial tests in a tensiometer, using Wilhelmy plate method and the results were compared with the results obtained for two commercial products above mentioned. (author)

  18. Metabolomic change precedes apple superficial scald symptoms.

    Science.gov (United States)

    Rudell, David R; Mattheis, James P; Hertog, Maarten L A T M

    2009-09-23

    Untargeted metabolic profiling was employed to characterize metabolomic changes associated with 'Granny Smith' apple superficial scald development following 1-MCP or DPA treatment. Partial least-squares discriminant analyses were used to link metabolites with scald, postharvest treatments, and storage duration. Models revealed metabolomic differentiation between untreated controls and fruit treated with DPA or 1-MCP within 1 week following storage initiation. Metabolic divergence between controls and DPA-treated fruit after 4 weeks of storage preceded scald symptom development by 2 months. alpha-Farnesene oxidation products with known associations to scald, including conjugated trienols, 6-methyl-5-hepten-2-one, and 6-methyl-5-hepten-2-ol, were associated with presymptomatic as well as scalded control fruit. Likewise, a large group of putative triterpenoids with mass spectral features similar to those of ursolic acid and beta-sitosterol were associated with control fruit and scald. Results demonstrate that extensive metabolomic changes associated with scald precede actual symptom development.

  19. Condiciones de la superficie deslizamiento con falla

    Directory of Open Access Journals (Sweden)

    María Cecilia Sierra B.

    2011-06-01

    Full Text Available Se modelan seis (6 taludes can diferentes ángulos de inclinación y peso unitario de 1.8 ton/m3, módulo de Young de 500 ton/m2 y relación de Poisson de 0.45. En cada uno de estos taludes se calculan los esfuerzos a través del talud y se determinan los puntos que están sometidos a mayores esfuerzos cortantes, correspondiendo estos a los estados de esfuerzos mas críticos, La ubicación de estos puntos es por donde comenzará y terminará la superficie de falla. Se obtiene un gráfico de diseño que permite obtener la pendiente máxima que debe tener un talud para que no se presente falla local en ningún punto.

  20. ESTUDIO ANATÓMICO DE LA RAMA SUPERFICIAL DEL NERVIO RADIAL. IMPLICACIONES QUIRÚRGICAS Superficial branch of radial nerve: an anatomical study and its surgical implications

    Directory of Open Access Journals (Sweden)

    Enrique Vergara-Amador

    2010-07-01

    Full Text Available Antecedentes. Conocer la anatomía de la rama superficial del nervio radial, es indispensable para la adecuada práctica de cirugías que involucran la mano y la muñeca. Objetivo. Determinar las relaciones del nervio radial y sus ramas con el tubérculo de Lister, la apófisis estiloides del radio y la distribución en el dorso de la mano. Material y métodos. Se disecaron 25 piezas de cadáveres frescos. Se identificó la rama superficial del nervio radial y se midió la distancia entre la salida del nervio y la apófisis estiloides del radio. Se identificaron las ramas del nervio en el antebrazo distal y en la muñeca y se midieron respecto a la apófisis estiloides y al tubérculo de Lister. Resultados. La rama superficial del nervio radial emergió en la región dorsal y radial del tercio distal del antebrazo entre el músculo braquiradialis y el extensor carpis radialis longus, a una distancia de 8,45 cm proximal a la apófisis estiloides. Su primera rama de división discurrió palmar a la apófisis estiloides radial a una distancia promedio de 0,74 cm respecto a la misma. El tronco principal se dividió en varias ramas terminales así: proximal a la apófisis estiloides del radio (28%, a nivel de la misma (12% y distal (60%. El patrón de distribución de las ramas nerviosas en la base de los dedos más frecuente fue el del primero, segundo y el lado radial del tercer dedo (56%. Discusión. Este estudio mostró la gran variabilidad de la rama superficial del nervio radial en el dorso de la mano y la alta probabilidad de daño del mismo durante los procedimientos abiertos, artroscópicos o procedimientos percutáneos en la muñeca.Background. The anatomy of the superficial branch of radial nerve is essential for the proper practice of surgery involving the hand and wrist. Objetive. Determine relationship between the superficial radial nerve and his branches with the radial styloid process level, Lister’s tubercle and the distribution of

  1. Propiedades de superficie en frutas recubiertas con biopolímeros: revisión

    OpenAIRE

    Moncayo Martinez, Diana Cristina; Buitrago Hurtado, Gustavo; Algecira Enciso, Néstor Ariel

    2012-01-01

    La elaboración de películas y recubrimientos con materiales naturales y biodegradables, disminuyen los daños ambientales comparados con los ocasionados por materiales comunes de plásticos sintéticos. Las formulaciones con biopolímeros como celulosa, gomas, almidones o proteínas; permiten conservar la calidad de las frutas y los vegetales frescos. La determinación de las propiedades que tiene la superficie de la piel de la fruta y la solución de recubrimiento, permiten predecir la eficiencia d...

  2. Volumetric and superficial characterization of carbon activated; Caracterizacion volumetrica y superficial de carbon activado

    Energy Technology Data Exchange (ETDEWEB)

    Carrera G, L.M.; Garcia S, I.; Jimenez B, J.; Solache R, M.; Lopez M, B.; Bulbulian G, S.; Olguin G, M.T. [Departamento de Quimica, Gerencia de Ciencias Basicas, Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

    2000-07-01

    The activated carbon is the resultant material of the calcination process of natural carbonated materials as coconut shells or olive little bones. It is an excellent adsorbent of diluted substances, so much in colloidal form, as in particles form. Those substances are attracted and retained by the carbon surface. In this work is make the volumetric and superficial characterization of activated carbon treated thermically (300 Centigrade) in function of the grain size average. (Author)

  3. Traumatic aneurysm of superficial temporal artery. CT demonstration

    Energy Technology Data Exchange (ETDEWEB)

    Sharma, A.; Tyagi, G.; Sahai, A.; Baijal, S.S. (G.B. Pant Hospital and M.A. Medical Coll., New Delhi (India). Dept. of Neurosurgery G.B. Pant Hospital and M.A. Medical Coll., New Delhi (India). Dept. of Radiology)

    1991-12-01

    A case of traumatic pseudo-aneurysm of the superficial temporal artery documented on Computed tomography (CT) and angiography is described in a 55-year-old female, who was treated by surgical excision. Computed tomographic appearance of this lesion is illustrated. This represents, to our knowledge, the first CT demonstration of traumatic aneurysm of superficial temporal artery within a large subgaleal haematoma. (orig.).

  4. Risk factors associated with acquiring superficial fungal infections in ...

    African Journals Online (AJOL)

    school children in South Western Nigeria: a comparative study. Olaide Oke Olutoyin1, Olaniyi ... Keywords: Risk factors, school children, skin, superficial fungal infections. ..... study with poor hygiene, malnutrition, overcrowding and poor general social ... cial determinants of health that influence the presence of superficial ...

  5. AVALIAÇÃO MICROBIOLÓGICA E FÍSICO-QUÍMICA DE PERNIS SUÍNOS TRATADOS COM ÁCIDOS ORGÂNICOS E/OU VAPOR NO CONTROLE DA CONTAMINAÇÃO SUPERFICIAL POR Salmonella Typhimurium

    Directory of Open Access Journals (Sweden)

    Andréa Rosa Machado

    2013-09-01

    Full Text Available Asymptomatic carrier pigs are the main risk factor for carcass contamination during the slaughter. Several post-slaughter prevention programs have been tested, such as organic acids and steam under pressure. These alternatives show low cost and high efficiency. This study tested the use of organic acid solutions and steam, in isolated tests and its associations. This experiment also evaluated the physical-chemistry features of the pork. Forty pork legs were contaminated with Salmonella Typhimurium DT 177 and subsequently divided into 4 treatments: immersion in physiological solution for 5 seconds (control, T1; immersion in physiological solution with 1000 ppm of organic acids for 5 seconds (T2; sprinkling of steam under pressure (4 bar at 140ºC (T3; and T2 after T3 (T4. An area of 100cm2 was sampled through superficial swabs for Salmonella counts by Most Probable Number method (MPN. Aspect, color, consistency, smell, and levels of fat, protein, pH, and moisture were also evaluated before and after each treatment. The use of steam associated to the immersion in organic acid solution showed better efficiency for reduction of superficial contamination (decreasing 100% of counts but the better effectiveness was observed through the decreasing of 0.8 log of MPN at skin and 0.77 log of MPN at muscle by using the physiological solution (T1 and the organic acid solution (T2, respectively. The steam treatment associated with the organic acid solutions (T4 decreased the pH and increased moisture of pork legs, although it did not mischaracterize the quality (within required parameters for human consumption. All the other treatments did not change physical-chemistry fefatures.

  6. UNILATERAL INCOMPLETE SUPERFICIAL PALMAR ARCH: A CASE REPORT

    Directory of Open Access Journals (Sweden)

    Subhankar Chakraborty

    2015-12-01

    Full Text Available The functional importance of hand is revealed by its rich vascularity contributed by superficial and deep palmar arches (SPA and DPA.Superficial palmar arch is located superficial to flexor tendons, and deep palmar arch deep to lumbrical muscles. Variations are found more often in SPA than DPA, later being more or less constant. During routine undergraduate dissection, we observed, unilateral incomplete SPA being formed by superficial palmar branches of ulnar and radial artery in the right hand of a male cadaver. These two arteries remained independent without anastomosis forming incomplete arch (SPA.The superficial branch of ulnar artery entered hand superficial to flexor retinaculum and supplied middle, ring and little finger by three branches. The superficial branch of radial artery via its two branches supplied index finger and thumb. Classical SPA formation was seen on left side. The presence of an incomplete SPA as in this case is a potential danger in RA harvesting for CABG.Variations in SPA play a pivotal role in microvascular surgical procedures of hand, RAinterventions and arterial graft applications.

  7. Use of cesium-137 methodology in the evaluation of superficial erosive processes

    Directory of Open Access Journals (Sweden)

    Avacir Casanova Andrello

    2003-06-01

    Full Text Available Superficial erosion is one of the main soil degradation agents and erosion rates estimations for different edaphicclimate conditions for the conventional models, as USLE and RUSLE, are expensive and time-consuming. The use of cesium-137 antrophogenic radionuclide is a new methodology that has been much studied and its application in the erosion soil evaluation has grown in countries as USA, UK, Australia and others. A brief narration of this methodology is being presented, as the development of the equations utilized for the erosion rates quantification through the cesium-137 measurements. Two watersheds studied in Brazil have shown that the cesium-137 methodology was practicable and coherent with the survey in field for applications in erosion studies.A erosão superficial é um dos principais agentes de degradação dos solos e estimativas das taxas de erosão para diferentes condições edafoclimáticas pelos modelos tradicionais como USLE, RUSLE, são onerosos e demorados. Uma metodologia que tem sido muito estudada e sua aplicação no estudo da erosão vem crescendo em países como EUA, Reino Unido, Austrália, e outros, é a do uso do radionuclídeo antropogênico césio-137. Um resumo da história desta metodologia é apresentado, assim como a evolução das equações utilizadas para quantificar as taxas de erosão através da medida do césio-137. Duas bacias estudadas no Brasil mostraram que a metodologia do césio-137 é viável e coerente com as observações em campo para aplicação no estudo da erosão.

  8. Prevalence of superficial siderosis following singular, acute aneurysmal subarachnoid hemorrhage

    Energy Technology Data Exchange (ETDEWEB)

    Lummel, N.; Bochmann, K. [Ludwig-Maximilian-University, Department of Neuroradiology, Klinikum Grosshadern, Munich (Germany); Bernau, C. [Leibniz-Rechenzentrum, Munich (Germany); Thon, N. [Ludwig-Maximilian-University, Department of Neurosurgery, Klinikum Grosshadern, Munich (Germany); Linn, J. [Technical University, Department of Neuroradiology, Klinikum Dresden, Dresden (Germany)

    2015-04-01

    Superficial siderosis is presumably a consequence of recurrent bleeding into the subarachnoid space. The objective of this study was to assess the prevalence of superficial siderosis after singular, aneurysmal subarachnoid hemorrhage (SAH) in the long term. We retrospectively identified all patients who presented with a singular, acute, aneurysmal SAH at our institution between 2010 and 2013 and in whom a magnetic resonance imaging (MRI) including T2*-weighted imaging was available at least 4 months after the acute bleeding event. MRI scans were judged concerning the presence and distribution of superficial siderosis. Influence of clinical data, Fisher grade, localization, and cause of SAH as well as the impact of neurosurgical interventions on the occurrence of superficial siderosis was tested. Seventy-two patients with a total of 117 MRIs were included. Mean delay between SAH and the last available MRI was 47.4 months (range 4-129). SAH was Fisher grade 1 in 2 cases, 2 in 4 cases, 3 in 10 cases, and 4 in 56 cases. Superficial siderosis was detected in 39 patients (54.2 %). In all patients with more than one MRI scan, localization and distribution of superficial siderosis did not change over time. Older age (p = 0.02) and higher degree of SAH (p = 0.03) were significantly associated with the development of superficial siderosis. Superficial siderosis develops in approximately half of patients after singular, aneurysmal SAH and might be more common in patients with an older age and a greater amount of blood. However, additional factors must play a role in whether a patient is prone to develop superficial siderosis or not. (orig.)

  9. Comportamiento hidráulico de los sistemas de riego por goteo superficial y sub superficial

    OpenAIRE

    2011-01-01

    Para su evaluación el sistema de riego fue montado con un diseño experimental completamente aleatorizado, con cuatro tratamientos, uno con el sistema de riego por goteo superficial y tres con sistemas de riego por goteo sub superficiales con emisores soterrados a 15, 30 y 45 centímetros de profundidad. Se realizaron evaluaciones de laboratorio y de campo de los principales parámetros hidráulicos del sistema, al inicio de la primera campaña de riego y al final de la tercera, obteniéndose en el...

  10. Superficial cervicovaginal myofibroblastoma: report of four cases and literature review

    Institute of Scientific and Technical Information of China (English)

    WANG Qi-feng; WU Yu-yu; WANG Jian

    2010-01-01

    @@ In 2001, Laskin et al~1 firstly described a series of 14 seemly distinctive mesenchymal tumors that occurred exclusively in the superficial lamina propria of the vagina and cervix of middle to old-aged women. They proposed the term "superficial cervicovaginal myofibroblastoma (SCVM)" to highlight the unique features of this tumor: the superficial subepithelial location and myofibroblastic differentiation of the tumor cells. SCVM appears less well recognized with only three additional reports have been documented in the English literatures.~(2-4) In this study, we described four new cases of SCVM to further characterize the clinical and pathological features of this rare entity.

  11. Superficial Fibromatosis Mimicking Glomus Tumor of the Second Toe.

    Science.gov (United States)

    Jo, Hyang Jeong; Chae, Soo Uk; Kim, Gang Deuk; Kim, Yeung Jin; Choi, Deok Hwa; Park, Jae In

    2015-09-01

    Various types of tumor can occur in the subungual space, including glomus tumors, subungual exostosis, hemangioma, epidermal cysts, and malignant tumors. While fibromatosis can occur at various sites throughout the body, it is very rarely seen in the toe. Here, we are the first to report a case of superficial fibromatosis mimicking a glomus tumor in the subungual space of the second toe. The presentation of this condition shows the possibility of encountering uncommon superficial fibromatosis in the distal phalanx of the toe, and suggests that superficial fibromatosis should be included in the differential diagnosis of a glomus tumor in the toe.

  12. Revisión sobre modelado de superficies complejas

    Directory of Open Access Journals (Sweden)

    Juan D. Osorio

    2004-01-01

    Full Text Available Este artículo presenta una revisión de las técnicas más empleadas para la obtención de modelos computacionales de superficies complejas. Estas representaciones están siendo utilizadas en diversas áreas de la industria mediante procedimientos de ingeniería reversa. Las tres principales categorías son las superficies funcionales (implícitas, paramétricas y las superficies complejas simplicial (mallas triangulares. Se realiza un paralelo entre estos métodos y se exponen las ventajas y las desventajas de cada una de estas representaciones.

  13. Antibody conjugate radioimmunotherapy of superficial bladder cancer

    Directory of Open Access Journals (Sweden)

    Alan Perkins

    2002-09-01

    Full Text Available The administration of antibody conjugates for cancer therapy is now proving to be of clinical value. We are currently undertaking a programme of clinical studies using the monoclonal antibody C595 (IgG3 which reacts with the MUC1 glycoprotein antigen that is aberrantly expressed in a high proportion of bladder tumours. Radioimmunoconjugates of the C595 antibody have been produced with high radiolabelling efficiency and immunoreactivity using Tc-99m and In-111 for diagnostic imaging, and disease staging and the cytotoxic radionuclides Cu-67 and Re-188 for therapy of superficial bladder cancer. A Phase I/II therapeutic trail involving the intravesical administration of antibody directly into the bladder has now begun.A administração de anticorpos conjugados para o tratamento do câncer está agora provando ser de valor clínico. Nós estamos atualmente realizando um programa de estudos clínicos usando o anticorpo monoclonal C595 (IgG3 que reage com a glicoproteína MUC1 que está aberrantemente expressa numa alta proporção de tumores de bexiga. Tem sido produzidos radioimunoconjugados do anticorpo C595, com alta eficiência de radiomarcação e a imunoreatividade, usando-se o Tc-99m e In-111, para o diagnóstico por imagem e estagiamento de doenças. Tem sido produzidos, também, radionuclídeos citotóxicos (Cu-67 e Re-188 para o tratamento de cânceres superficiais de bexiga. A fase terapêutica I/II já se iniciou, envolvendo a administração intravesical do anticorpo diretamente na bexiga.

  14. Hemipelvic irradiation for superficial bladder cancer

    Energy Technology Data Exchange (ETDEWEB)

    Tashiro, Kazuya; Machida, Toyohei; Ooishi, Yukihiko; Ueda, Masataka; Kido, Akira; Wada, Tetsuro; Yoshigoe, Fukuo; Yamashita, Takashi; Mochizuki, Sachio

    1985-02-01

    In 15 patients with superficial bladder cancer hemipelvic irradiation was performed for prevention of relapse of cancer and decrease in side effects with following results. All patients received TUR-Bt at our department during the six years period from 1978 to 1983. As to stages, one was classified as Ta, 11 as T 1 and 3 as T 2, and pathologic diagnosis was transitional epithelial carcinoma of grade 1 in 1 case, grade 2 in 8 cases and grade 3 in 6 cases. Irradiation was started from the 7 th to 14 th day after TUR-Bt. At first, hemipelvic anterior and posterior field including the field from the affected pelvis to 1 to 2 cm beyond the midline toward the contralateral side and from the aortic bifurcation to the prostatic urethra were irradiated at a dose of 45 Gy. Then, whole bladder field was given an additional rotation irradiation of 20 Gy. The mean observation period was 43 months (ranging from 12 to 79 months) and relapse of cancer was observed in 6 cases out of 15 cases (40%). The site of relapse was in the irradiated site in 2 cases, contralateral site in 3 cases and both side in 1 cases. However, in all of the relapsed cases no aggravation in differential degree or progression in stage was observed. As the side effects, radiation cystitis developed as a delayed damage in 1 case. Thus, although no efficacy for prevention of relapse which we had expected was not seen, this irradiation method effectively inhibited the progression of lesion and development of delayed damage. (author).

  15. Levantamento estratigráfico das Formações Superficiais Cenozóicas no Planalto de Palmas (PR e Água Doce (SC: subsídio ao estudo da evolução da paisagem a partir do Estágio Isotópico Marinho 3 / Statigraphic Research about the Cenozoic Superficial Formations at Palmas (PR and Agua Doce (SC Plateau: subsidy to the study of the evolution of landscape from the Marine Isotopic Stage

    Directory of Open Access Journals (Sweden)

    Simone Guerra

    2012-11-01

    Full Text Available O artigo apresenta informações do levantamento estratigráfico das Formações Superficiais Cenozóicas no Planalto de Palmas (PR e Água Doce (SC: subsídio ao estudo da evolução da paisagem a partir do Estágio Isotópico Marinho 3 (EIM3, através da descrição de duas seções estratigráficas, bem como a utilização de informações da seção guia estabelecida previamente. Nas seções foram levantados depósitos de colúvio, colúvio–aluviais, solos enterrados e paleocanais de 1ª e 2ª ordem colmatados. Os resultados evidenciaram registros estratigráficos com idades do Pleistoceno Superior ao Holoceno, referentes aos EIM 3,2 e 1 . No geral, a paisagem possui sua evolução relacionada a fases alternadas de estabilidade/instabilidade, com processo de degradação/agradação e pedogênese com formação de Neossolos.

  16. Efeito do glutaraldeído na adsorção de extrato proteico da Ipomoea Batatas (L Lam na superficie de uma zeólita analcima Effect of the glutaraldeide on the adsorption of proteic extract of the Ipomoea Batatas (L Lam in analcime zeolite surface

    Directory of Open Access Journals (Sweden)

    A. C. S. Gondim

    2005-09-01

    Full Text Available A zeólita analcime (Na16Al16Si32O96.nH 2O foi submetida a ataque ácido com HCl 0,25 mol.L-1, seguido da funcionalização com glutaraldeído, foi imersa em extrato protéico obtido da polpa da batata-doce (Ipomoea Batatas (L Lam, que tem em sua composição a enzima polifenol oxidase (PFO. As amostras foram submetidas a procedimentos de caracterização por microscopia eletrônica de varredura, espectroscopia na região do infravermelho com transformada de Fourier e termogravimetria.The analcime zeolite (Na16Al16Si32O96.nH2O was treated with hydrochloric acid 0.25 mol.L-1, followed by the funcionalization with glutaraldehyde and immersed in the proteic extract obtained from gross extract of sweet potato pulp (Ipomoea Batatas (L Lam, which presents in its composition the polyphenol oxidase enzyme (PPO. Other samples were submitted to the same procedure with characterizations by scanning electron microscopy, Fourier Transform Infrared spectroscopy and thermogravimetry.

  17. Superficial Radiation Therapy for the Treatment of Nonmelanoma Skin Cancers.

    Science.gov (United States)

    McGregor, Sean; Minni, John; Herold, David

    2015-12-01

    Superficial radiation therapy has become more widely available to dermatologists. With the advent of more portable machines, it has become more convenient for dermatology practices to employ in an office-based setting. The goal of this paper is to provide a deeper insight into the role of superficial radiation therapy in dermatology practice and to review the current literature surrounding its use in the treatment of both basal and squamous cell carcinomas.

  18. Functional Compartmentalization of the Human Superficial Masseter Muscle

    OpenAIRE

    Guzmán-Venegas, Rodrigo A.; Biotti Picand, Jorge L.; Francisco J Berral de la Rosa

    2015-01-01

    Some muscles have demonstrated a differential recruitment of their motor units in relation to their location and the nature of the motor task performed; this involves functional compartmentalization. There is little evidence that demonstrates the presence of a compartmentalization of the superficial masseter muscle during biting. The aim of this study was to describe the topographic distribution of the activity of the superficial masseter (SM) muscle's motor units using high-density surface e...

  19. Imaging of the most frequent superficial soft-tissue sarcomas

    Energy Technology Data Exchange (ETDEWEB)

    Morel, Melanie; Taieb, Sophie; Ceugnart, Luc [Centre Oscar Lambret, Department of Radiology, Lille (France); Penel, Nicolas [Centre Oscar Lambret, Department of Oncology, Lille (France); Mortier, Laurent [Centre Hospitalier Universitaire de Lille, Department of Dermatology, Hopital Claude Huriez, Lille (France); Vanseymortier, Luc [Centre Oscar Lambret, Department of Surgery, Lille (France); Robin, Y.M. [Centre Oscar Lambret, Departement of Pathology, Lille (France); Gosset, Pierre [Groupement Hospitalier de l' Institut Catholique-Faculte Libre de Medecine de Lille, Department of Pathology, Hopital Saint-Philibert, Lomme (France); Cotten, Anne [Centre Hospitalier Universitaire de Lille, Department of Musculoskeletal Radiology, Centre Hopital Roger Salengro, Lille (France)

    2011-03-15

    Superficial soft-tissue sarcomas are malignant mesenchymal tumors located within the cutaneous and/or subcutaneous layers. Most superficial soft-tissue sarcomas are low-grade tumors; yet, the risk of local recurrence is high, and initial wide surgery is the main prognostic factor. Some of these superficial sarcomas may grow, following an infiltrative pattern, and their real extent may be underestimated clinically. Imaging techniques are useful to determine precisely the real margins of the tumor, especially in cases of clinically doubtful or recurrent or large superficial lesions. Imaging tools enable one to determine the relationship with the superficial fascia separating the subcutaneous layer from the underlying muscle. In our institution ultrasonographic examination is followed by magnetic resonance (MR) imaging when the size of the lesion exceeds 3-5 cm. Imaging assessment is performed prior to biopsy, enabling optimal surgical management. Imaging features of the main superficial sarcomas are detailed in the following article, according to their major locations: those arising in the epidermis and/or dermis, which are most often diagnosed by dermatologists, and the subcutaneous sarcomas. (orig.)

  20. Drenaje suplementario del sistema venoso superficial en colgajos pediculados Supplementary drainage of superficial venous system in pedicled flaps

    Directory of Open Access Journals (Sweden)

    A. Fernández García

    2012-06-01

    Full Text Available Los colgajos pediculados pueden sufrir edema y congestión debido a que su drenaje a trevés del sistema venoso superfical es imposible y el flujo hacia el sistema profundo a nivel del pedículo es precario. Esta situación suele evolucionar hacia la necrosis parcial o la pérdida total del colgajo en pocas horas. La apertura del sistema venoso superficial permite el drenaje adecuado de los tejidos transferidos y evita estas complicaciones. Este artículo analiza el papel de las anastomosis microquirúrgicas en el sistema venoso superficial de los colgajos pediculados. Esta técnica permite comunicar el sistema venoso superfical de los tejidos transferidos con el sistema venoso superficial del territorio que rodea al defecto. Presentamos los resultados obtenidos con esta técnica en colgajos de perforante en hélice, colgajos miocutáneos, colgajos neurocutáneos y colgajos fasciograsos volteados.The pedicled flaps can suffer edema and congestion due to the impossibility of drainage toward the superficial venous system and the precarious flow via the deep system at the level of the pedicle. The evolution of this situation is usually partial necrosis or total loss of the flap in a few hours. The opening of the venous superficial system achieves an appropriate drainage of the transfered tissues and avoids these complications. In this article we analyze the role of the microsurgical anastomosis at the level of the superficial venous system of pedicled flaps. This technique allows to communicate the superficial venous system of the transfered tissues with the superficial venous system of the territory around the defect. We report the results with this method in propeller perforator flaps, miocutaneous flaps, neurocutaneous flaps and adipofascial turn over flaps.

  1. Lack of Methylene Blue Staining in Superficial Epithelia as a Possible Marker for Superficial Lateral Spread of Bile Duct Cancer

    Directory of Open Access Journals (Sweden)

    I. Maetani

    1996-01-01

    epithelia. The cancerous epithelia stained significantly less often than either the normal (p = 0.000005 or the metaplastic (p = 0.001 epithelia. Evaluation of methylene blue staining during PTCS revealed that this stain was absorbed by the cholangial epithelia, not superficially stuck to it. The difference in methylene blue staining properties between the cancerous and normal epithelia could be helpful to clarify the boundary of superficial lateral spread of bile duct cancer.

  2. Amniotic membrane transplant with superficial keratectomy in superficial corneal degenerations: Efficacy in a rural population of north India

    Directory of Open Access Journals (Sweden)

    Rao Aparna

    2008-01-01

    Full Text Available Aim: To evaluate the applicability and efficacy of superficial keratectomy with transplantation of preserved amniotic membrane in superficial corneal degenerations in a rural population of Northern India in terms of visual improvement and surface regularization. Settings: Peripheral referral center in rural north India. Materials and Methods: This was a prospective non-comparative interventional case series where 24 eyes of 20 farmers from peripheral rural areas (M:F = 19:1 with visually significant superficial degenerative disorders (15 eyes with climatic droplet keratopathy one of which was associated with Salzmann nodular degeneration and nine eyes with band-shaped keratopathy were subjected to amniotic membrane transplantation (single or multiple layer combined with superficial keratectomy. Subjective and objective outcomes after surgery were evaluated and analyzed and statistical significance of the outcomes in various disorders was evaluated. Results: Eighty-eight per cent (21 eyes had symptomatic relief from distressing preoperative symptoms while postoperative visual improvement by two or more lines was achieved in 23 eyes (96% over a mean follow-up period of 26.8 ± 10.2 months. The surface irregularity present preoperatively was relieved in 23 cases while postoperative decline of vision with visually significant scarring was seen in one case (4%, which was labeled as failure. Conclusions: Amniotic membrane transplant with superficial keratectomy helped achieve subjective comfort, visual rehabilitation and clinical regularization of the corneal surface in superficial corneal degenerations during the mean followup of 26.8 ± 10.2 months in rural setups.

  3. Sensoriamento remoto como subsídio à modelagem do balanço energético superficial

    Directory of Open Access Journals (Sweden)

    Vassiliki Terezinha Galvão Boulomytis

    2010-09-01

    Full Text Available O balanço energético superficial interfere no funcionamento do sistema terrestre através da relação existente entre a água e a energia solar e do modo como ocorre o seu processo de partição. Para a sua estimativa, modelagens vêm sendo realizadas utilizando-se de um ou mais sensores com diferentes resoluções, a fim de se obter dados com resoluções temporal e espacial adequadas a uma escala local. Neste estudo serão apresentados modelos para estimar a evapotranspiração e outros parâmetros biofísicos através do balanço energético superficial com a utilização dos sensores MODIS e AMSR-E.

  4. Biochemical composition of the superficial layer of articular cartilage.

    Science.gov (United States)

    Crockett, R; Grubelnik, A; Roos, S; Dora, C; Born, W; Troxler, H

    2007-09-15

    To gain more information on the mechanism of lubrication in articular joints, the superficial layer of bovine articular cartilage was mechanically removed in a sheet of ice that formed on freezing the cartilage. Freeze-dried samples contained low concentrations of chondroitin sulphate and protein. Analysis of the protein by SDS PAGE showed that the composition of the sample was comparable to that of synovial fluid (SF). Attenuated total reflection infrared (ATR-IR) spectroscopy of the dried residue indicated that the sample contained mostly hyaluronan. Moreover, ATR-IR spectroscopy of the upper layer of the superficial layer, adsorbed onto silicon, showed the presence of phospholipids. A gel could be formed by mixing hyaluronan and phosphatidylcholine in water with mechanical properties similar to those of the superficial layer on cartilage. Much like the superficial layer of natural cartilage, the surface of this gel became hydrophobic on drying out. Thus, it is proposed that the superficial layer forms from hyaluronan and phospholipids, which associate by hydrophobic interactions between the alkyl chains of the phospholipids and the hydrophobic faces of the disaccharide units in hyaluronan. This layer is permeable to material from the SF and the cartilage, as shown by the presence of SF proteins and chondroitin sulphate. As the cartilage dries out after removal from the joint, the phospholipids migrate towards the surface of the superficial layer to reduce the surface tension. It is also proposed that the highly efficient lubrication in articular joints can, at least in part, be attributed to the ability of the superficial layer to adsorb and hold water on the cartilage surface, thus creating a highly viscous boundary protection.

  5. Superficial dose evaluation of four dose calculation algorithms

    Science.gov (United States)

    Cao, Ying; Yang, Xiaoyu; Yang, Zhen; Qiu, Xiaoping; Lv, Zhiping; Lei, Mingjun; Liu, Gui; Zhang, Zijian; Hu, Yongmei

    2017-08-01

    Accurate superficial dose calculation is of major importance because of the skin toxicity in radiotherapy, especially within the initial 2 mm depth being considered more clinically relevant. The aim of this study is to evaluate superficial dose calculation accuracy of four commonly used algorithms in commercially available treatment planning systems (TPS) by Monte Carlo (MC) simulation and film measurements. The superficial dose in a simple geometrical phantom with size of 30 cm×30 cm×30 cm was calculated by PBC (Pencil Beam Convolution), AAA (Analytical Anisotropic Algorithm), AXB (Acuros XB) in Eclipse system and CCC (Collapsed Cone Convolution) in Raystation system under the conditions of source to surface distance (SSD) of 100 cm and field size (FS) of 10×10 cm2. EGSnrc (BEAMnrc/DOSXYZnrc) program was performed to simulate the central axis dose distribution of Varian Trilogy accelerator, combined with measurements of superficial dose distribution by an extrapolation method of multilayer radiochromic films, to estimate the dose calculation accuracy of four algorithms in the superficial region which was recommended in detail by the ICRU (International Commission on Radiation Units and Measurement) and the ICRP (International Commission on Radiological Protection). In superficial region, good agreement was achieved between MC simulation and film extrapolation method, with the mean differences less than 1%, 2% and 5% for 0°, 30° and 60°, respectively. The relative skin dose errors were 0.84%, 1.88% and 3.90%; the mean dose discrepancies (0°, 30° and 60°) between each of four algorithms and MC simulation were (2.41±1.55%, 3.11±2.40%, and 1.53±1.05%), (3.09±3.00%, 3.10±3.01%, and 3.77±3.59%), (3.16±1.50%, 8.70±2.84%, and 18.20±4.10%) and (14.45±4.66%, 10.74±4.54%, and 3.34±3.26%) for AXB, CCC, AAA and PBC respectively. Monte Carlo simulation verified the feasibility of the superficial dose measurements by multilayer Gafchromic films. And the rank

  6. Avaliação in vitro da influência do polimento superficial de resina acrílica para aparelhos ortodônticos na adesão e remoção de Streptococcus mutans In vitro evaluation of the influence of resin acrylic surface polishing for orthodontic appliances on adhesion and removal of Streptococcus mutans

    Directory of Open Access Journals (Sweden)

    Selma Sano Suga

    2005-02-01

    Full Text Available No presente estudo, foi realizada análise microbiológica in vitro da superfície interna de placas para arcadas superiores, confeccionadas em resina acrílica utilizadas em aparelhos ortodônticos. Procurou-se avaliar se o fator polimento químico e polimento mecânico estavam associados à adesão microbiana de Streptococcus mutans.Também foi analisada a limpeza química e mecânica dos aparelhos. Na pesquisa, foram examinados 48 aparelhos, divididos em 3 grupos, sendo que cada grupo foi subdividido em 2 subgrupos, referente aos tipos distintos de polimento. O Grupo 1 serviu como controle; no Grupo 2 foi realizado a higienização mecânica das placas em resina acrílica, através da limpeza com escova para prótese total (Denture Brush, Kolynos e no Grupo 3 realizou-se a higienização dos aparelhos através de 30 minutos de imersão em solução de perborato de sódio (Limpador Efervescente de Próteses e Aparelhos Ortodônticos, Farmácia Fórmula & Ação. Pelos resultados estatísticos, através de análise descritiva, conclui-se que o tipo de polimento realizado na face interna da resina acrílica não influencia a adesão de Streptococcus mutans. A análise inferencial, realizada através de comparações entre os grupos avaliados, indica que houve redução na remoção do biofilme formado pela contaminação por Streptococcus mutans nos grupos, sendo que a utilização do limpador químico foi mais eficiente do que a limpeza mecânica através da escovação. Não houve, entretanto, diferenças entre os subgrupos, o que confirma que o tipo de polimento (químico e mecânico não interfere na adesão e remoção de Streptococcus mutans.The aim of this in vitro microbiologic analysis was to evaluate the adhesion of microorganisms on the internal surface of intra oral removable plates made in acrylic resin for orthodontic and prosthetic appliances. The hypothesis to be tested was that there is an association between chemical or

  7. Long-term evolution of superficial optic disc drusen

    DEFF Research Database (Denmark)

    Malmqvist, Lasse; Lund-Andersen, Henrik; Hamann, Steffen

    2017-01-01

    with hereditary ODD were included. RESULTS: Mean age at initial and follow-up examination was, respectively, 16.8 and 73.3 years. The median follow-up time was 56 years. A minimal or non-existing change in superficial ODD anatomy (size and number) was seen in 10 of 12 eyes. There was a tendency towards more......PURPOSE: Optic disc drusen (ODD) is hyaline deposits in the optic nerve head seen in 1-2% of the population. Long-term evolution of ODD anatomy and visual field defects in ODD patients is a key factor for learning more about pathophysiology and prognosis of the condition. With a median follow......-up period of 56 years, this is the first study that evaluates superficial optic disc anatomy and visual fields in patients with ODD over a life span. METHODS: Observational case series investigating progression of superficial optic disc anatomy and visual fields in ODD patients. Eight patients...

  8. Física de superficies: métodos experimentales

    OpenAIRE

    2012-01-01

    Hace unos 30 años se empezó con el estudio de superficies sólidas y hoy son muchos los investigadores que en el mundo entero se dedican al estudio de las propiedades físicas y químicas de superficies e interfaces.La motivación radica en que en las interacciones entre los diversos sistemas que componen nuestro universo se hallan involucradas sus superficies, razón suficiente para captar la importancia de su estudio para la vida humana y su repercusión tecnológica y económica. A ella habría que...

  9. Case report: cochlear implantation in a patient with superficial siderosis.

    Science.gov (United States)

    Ryan, Michelle; Piplica, Doris; Zhang, Ming

    2014-12-01

    This is a retrospective case review study. Current understanding of cochlear implantation in patients with superficial siderosis is limited, with roughly 15 reported cases worldwide. The purpose of this study is to report an additional case of cochlear implantation in a patient with superficial siderosis and to contribute to the current literature available on outcomes of implantation in these individuals. One cochlear implant user with superficial siderosis in a tertiary referral center. Therapeutic and rehabilitative. Open set speech perception word scores increased from 0% preimplantation with bilateral hearing aids to 8% postimplantation in the bimodal condition (cochlear implant in the left ear and hearing aid in the right ear). Phoneme scores increased from 16% preimplantation to 36% postimplantation. The patient also demonstrated improvement from 38% preimplantation to 83% postimplantation on a closed set word test. Performance on open set recorded sentences did not improve; however, open set sentences administered live voice revealed an increase in performance from 4% preimplantation to 25% postimplantation in the auditory only condition and from 59% to 86% in the auditory-visual condition. For this patient with superficial siderosis, only marginal improvements in test scores at 11 months postimplantation were seen. Minimally, the use of a cochlear implant did prevent further deterioration of auditory performance. Therefore, patients with superficial siderosis who choose to proceed with cochlear implantation may still report perceived benefit from the maintenance of speech perception abilities even in the presence of minimal improvement. Rapid deterioration in hearing thresholds and speech discrimination before implantation may be an indicator of an actively progressing case of superficial siderosis, which may suggest possible limited benefit from cochlear implantation.

  10. Influência da secção transversa de fios ortodônticos na fricção superficial de braquetes autoligados Influence of the cross-section of orthodontic wires on the surface friction of self-ligating brackets

    Directory of Open Access Journals (Sweden)

    Roberta Buzzoni

    2011-08-01

    Full Text Available OBJETIVO: o objetivo do presente trabalho foi determinar a força de atrito estático entre braquetes de aço inoxidável autoligados com sistema de fechamento resiliente e fios ortodônticos redondos e retangulares do mesmo material. MÉTODOS: empregaram-se 30 braquetes referentes aos caninos superiores divididos em 6 grupos formados por braquetes autoligados Smartclip, In-Ovation R e convencionais Gemini amarrados com ligaduras elásticas. A hipótese testada neste trabalho foi quanto à possibilidade dos braquetes autoligados ativos serem suscetíveis à elevação da força de atrito com o aumento e alteração da secção transversal dos fios ortodônticos. Os ensaios foram realizados com tração de 30s em fios de aço inoxidável 0,020" e 0,019"X0,025" na máquina de ensaios Emic DL 10000, com uma célula de carga de 20 newtons. Cada conjunto braquete/fio foi responsável pela geração de quatro corpos de prova, totalizando 120 leituras. As comparações entre as médias foram realizadas através da Análise de Variância (one way ANOVA com correções pelo coeficiente de Bonferroni. RESULTADOS E CONCLUSÃO: os braquetes autoligados apresentaram maior força de atrito do que os braquetes convencionais amarrados com ligaduras elásticas. O grupo Smartclip foi o mais efetivo no controle do atrito (pOBJECTIVES: The purpose of this study was to assess the surface friction produced by self-ligating stainless steel brackets equipped with a resilient closure system and compare the friction generated during traction of round and rectangular orthodontic wires made from the same material. METHODS: Thirty maxillary canine brackets were divided into six groups comprising SmartClip and In-Ovation R self-ligating brackets, and conventional Gemini brackets tied with elastomeric ligatures. This investigation tested the hypothesis that self-ligating brackets are susceptible to increases in friction that are commensurate with increases and changes in the

  11. UV radiation sensors with unitary and binary superficial barrier

    Science.gov (United States)

    Dorogan, Valerian; Vieru, Tatiana; Kosyak, V.; Damaskin, I.; Chirita, F.

    1998-07-01

    UV radiation sensors with unitary and binary superficial barrier, made on the basis of GaP - SnO2 and GaAs - AlGaAs - SnO2 heterostructures, are presented in the paper. Technological and constructive factors, which permit to realize a high conversion efficiency and to exclude the influence of visible spectrum upon the photoanswer, are analyzed. It was established that the presence of an isotypical superficial potential barrier permits to suppress the photoanswer component formed by absorption of visible and infrared radiation in semiconductor structure bulk.

  12. PHOTODYNAMIC DIAGNOSIS AND FLUORESCENCE SPECTROSCOPY IN SUPERFICIAL BLADDER CANCER

    Directory of Open Access Journals (Sweden)

    I. G. Rusakov

    2009-01-01

    Full Text Available A comprehensive fluorescence technique has been developed to study the urinary bladder mucosa in patients with superficial bladder cancer (BC, by using alasense, white light cystoscopy, fluorescence cytoscopy, and local fluorescence spectroscopy in vivo. Quantification of urothelium fluorescence in the red emission foci of 5-ALA-induced protophorphyrin, with the local autofluorescence intensity being borne in mind, has been shown to increase the specificity of photodynamic diagnosis of superficial BC from 70 to 85% (p ≤ 0.05 and the total accuracy of the technique from 80 to 86%.  

  13. Cartografia digital para estimativa de escoamento superficial visando ao planejamento urbano

    Directory of Open Access Journals (Sweden)

    Franciane Mendonça dos Santos

    Full Text Available RESUMO O trabalho foi desenvolvido na Bacia Hidrográfica do Córrego Caçula, município de Ilha Solteira (SP, Brasil, e teve como finalidade estimar o potencial de escoamento superficial com base em metodologias de cartografia apoiadas em técnicas de tratamento digital de dados objetivando baixo custo e rapidez no processo de análise com vistas a subsidiar o planejamento urbano. O método de curva número (CN, desenvolvido pelo Soil Conservation Service (SCS, foi utilizado para determinação do potencial de escoamento superficial combinando informações de uso e ocupação do solo e tipos de solo presentes na bacia. As cartas de uso e ocupação foram produzidas por meio de imagens de satélite dos anos de 2001 e 2009, possibilitando considerar cenário passado e recente para verificar a influência das mudanças de uso do solo no escoamento superficial. Foi possível averiguar que as modificações no uso e na ocupação ocorridas no período resultaram em mudanças nos índices de escoamento superficial, particularmente em função do crescimento da área urbanizada e de plantio de cana-de-açúcar em substituição a pastagens. Os resultados mostraram forte influência do uso do solo nos valores de escoamento obtidos, e as mudanças de uso, sobretudo de pastagem para cultura de cana-de-açúcar, apontaram fortes variações nos valores obtidos. Em geral, os resultados permitiram avaliar potencialidades e limitações para a expansão urbana, indicando áreas carentes de estudos mais detalhados visando à solução de problemas locais.

  14. Evaluation of super intense geomagnetic storms and related structures of the interplanetary medium through the observation of cosmic rays of high energy surface; Analise de tempestades geomagneticas super intensas e de estruturas do meio interplanetario relacionadas, atraves da observacao de raios cosmicos de superficie de alta energia

    Energy Technology Data Exchange (ETDEWEB)

    Savian, Jairo Francisco; Schuch, Nelson J., E-mail: savian@lacesm.ufsm.br, E-mail: njschuch@lacesm.ufsm.br [Centro Regional Sul de Pesquisas Espaciais - CRSPE/INPE-MCT, Santa Maria, RS (Brazil); Silva, Marlos Rockenbach da; Lago, Alisson dal; Gonzalez, Walter Demetrio, E-mail: marlos@dge.inpe.br, E-mail: dallago@dge.inpe.br, E-mail: gonzalez@dge.inpe.br [Instituto Nacional de Pesquisas Espaciais - INPE-MCT, Sao Jose dos Campos, SP (Brazil); Munakata, Kazuoki [Physics Department, Shinshu University, Matsumoto (Japan)

    2005-04-15

    It is believed that the physical mechanism responsible for the transference of energy from the solar wind to the Earth magnetosphere is the reconnection between the interplanetary magnetic field and the terrestrial magnetic field (Tsurutani and Gonzalez, 1997). The necessary criterion for a intense geomagnetic storms to occur, Dst < -100nT, is the existence of a dawn-dusk interplanetary electric field larger than 5 mV/m, for a period larger than 3 hours. Cosmic rays have been studied as a natural phenomenon that can tell much about both Earth's environment in space and distant astrophysical processes (Jokipii, 2000). A solar disturbance propagating away from the Sun affects the pre-existing population of galactic cosmic rays in a number of ways. The most famous one is known as the 'Forbush decrease', which is a suppression of ground cosmic-ray counts observed during geomagnetic disturbances. The objective of this work is to study the response of the Southern Space Observatory ground Muon Telescope observations, installed in Sao Martinho da Serra, RS, Brazil, to 3 super intense geomagnetic storms, combining observation provided by L1 satellites and ground detectors. (author)

  15. Tratamiento superficial de materiales mediante luz solar concentrada: una opción mediante energías renovables

    Directory of Open Access Journals (Sweden)

    Martínez, D.

    1998-04-01

    Full Text Available The possible applications of solar furnaces to materials surface treatment are explained in an illustrative manner. A brief description of these systems is exposed, as well as an overview of the feasible industrial or testing applications for which their validity has been proven.

    En este artículo se explica de manera ilustrativa la posible aplicación de los hornos solares al tratamiento superficial de materiales. Se realiza una breve descripción de estos sistemas y se da un repaso a las posibles aplicaciones industriales ó de ensayo para las que se ha demostrado su aptitud.

  16. Interpolación y ajuste de superficies en componentes mecánicos digitalizados empleando superficies B-Spline

    OpenAIRE

    2014-01-01

    Este documento de tesis tiene el propósito de describir una metodología para obtener nubes de puntos que representen a superficies (o parches de geometría compleja) de piezas mecánicas que pueden ser replicadas en la industria. Estos puntos se obtuvieron utilizando el método de interpolación superficial B-Spline que deben cumplir un margen de error conocido y controlado de acuerdo a las tolerancias de fabricación utilizados en estos procesos de fabricación. En primer lugar e...

  17. Assessment of surface friction of self-ligating brackets under conditions of angulated traction Avaliação da fricção superficial apresentada por braquetes autoligáveis em condições de tracionamento sob angulação

    Directory of Open Access Journals (Sweden)

    Roberta Buzzoni

    2012-08-01

    ão mais efetivos no controle da fricção do que dispositivos contendo coberturas ativas. O tracionamento foi realizado segundo emprego de 25 segmentos de fio de aço inoxidável 0,020" na máquina de ensaios EMIC DL 10000 com célula de carga de 2,0kg. Cada conjunto braquete/fio foi responsável pela geração de quatro corpos de prova, totalizando-se 100 leituras. As comparações entre médias dos valores foram realizadas através da Análise de Variância (one-way ANOVA com correções pelo coeficiente de Bonferroni. RESULTADOS E CONCLUSÃO: as médias de fricção encontradas confirmaram a hipótese em teste, de que o sistema de braquetes Damon SL II é mais eficiente no controle do atrito do que o sistema de tampa ativa sob angulação de 0 grau (p<0,01. Quando submetidos a angulações de 2,5 graus, a fricção aumentou significativamente (p<0,01, porém mantendo-se ainda muito inferior aos patamares evidenciados no grupo de braquetes convencionais amarrados com ligaduras elásticas.

  18. Diagnostic and therapeutic challenges in superficial CNS siderosis

    DEFF Research Database (Denmark)

    Kondziella, Daniel; Lindelof, M.; Haziri, Donika

    2015-01-01

    that neurodegeneration due to haemosiderin-associated iron toxicity becomes irreversible with time. CONCLUSION: Surgical therapy in superficial CNS siderosis is rarely achieved. We suggest that prospective, large-scale multicentre studies are needed to search for non-surgical therapies that reverse (or prevent) ongoing...... neurotoxicity due to accumulating iron toxicity. FUNDING: not relevant. TRIAL REGISTRATION: not relevant....

  19. Anterior urethral recurrence of superficial bladder cancer: its clinical significance.

    Directory of Open Access Journals (Sweden)

    Saika T

    2003-12-01

    Full Text Available The aim of this study was to reveal the clinical features of anterior urethral recurrence in patients with superficial bladder cancer, and to determine the appropriate treatment. Three hundred and three patients with superficial bladder cancer, who were newly diagnosed and initially treated conservatively in our hospital between 1965 and 1990, were followed for at least 5 years and their clinical outcomes were analyzed. Clinical factors, including anterior urethral recurrence, were evaluated statistically regarding tumor progression. Eight patients (2.6% had anterior urethral recurrence following superficial bladder cancer. Twenty-four patients (7.9% had tumor progression and 149 (49.2% had tumor recurrence. In a multivariate analysis using a logistic model, anterior urethral recurrence was the most important factor, followed by histological grade. Four of 5 patients who were treated for anterior urethral recurrent tumors by transurethral resection showed progression and died of the cancer within one year. Two of the remaining three patients who underwent radical cysto-urethrectomy at the time of anterior urethral recurrence survived. Anterior urethral recurrence following superficial bladder cancer is a predictor for rapid subsequent malignant progression. Once there is anterior urethral recurrence, radical intensive therapy, including radical cysto-urethrectomy, should be carried out immediately.

  20. Superficies bioactivas en implantología: una nueva perspectiva

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    A. Cutando

    2007-02-01

    Full Text Available Actualmente, tras años de investigación en implantología, en los cuales se han realizado muchos trabajos, en donde se han estudiado diferentes tipos de superficies de implantes, lisas y rugosas, en un intento de mejorar, tanto en el tiempo como en la calidad , la osteointegración, se ha concluido que los implantes de superficie rugosa con un intervalo de rugosidad entre 1,0-2,0 nm, son los que parecen dar una mejor respuesta ósea y mejores resultados clínicos, pero desde un punto de vista exclusivamente mecánico. Hoy en día las investigaciones se centran en el desarrollo de superficies denominadas bioactivas, las cuales son capaces de interaccionar con el hueso que rodea al implante, como ocurre cuando el implante es revestido con carbonato cálcico o bien con flúor. Pero sabemos que dentro del metabolismo óseo, juegan importantes papeles, moléculas, como son la melatonina y la hormona del crecimiento entre otras, las cuales deben de ser tenidas en cuenta a la hora de hablar de osteointegración. Se realiza una breve descripción de la fisiología de ambas moléculas y se valora su aplicación al concepto de superficie bioactiva en implantología.

  1. Superficial Needling Therapy for Tennis Elbow in 40 Cases

    Institute of Scientific and Technical Information of China (English)

    GE Heng-bi; XIAO Yuan-chun

    2003-01-01

    Superficial needling therapy was employed to treat 40 cases of tennis elbow. For the cases of qi and blood stagnation, cupping therapy was added. Thirty-eight cases were cured after one treatment and 2 cases were cured after two treatments.

  2. Frey′s Syndrome as a Sequela of Superficial Parotidectomy

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    Rishi Kumar Bali

    2006-01-01

    The disorder is characterized by unilateral sweating and flushing of facial skin in the area of parotid gland occurring during meals. We present a case of a patient who developed symptoms of Frey Syndrome 4 months after undergoing superficial parotidectomy on left side.

  3. Atypical Presentation of Fibrolipomatous Hamartoma of Superficial Peroneal Nerve.

    Science.gov (United States)

    Dhinsa, Baljinder Singh; Lidder, Surjit; Abbasian, Ali

    2016-01-01

    Fibrolipomatous hamartoma is a rare presentation in the foot. An accurate diagnosis is key, with magnetic resonance imaging findings considered definitive. The management is dependent on the symptoms. We present an atypical presentation of fibrolipomatous hamartoma of the superficial peroneal nerve and discuss the current published data.

  4. Superficial dermatomycoses: a prospective clinico-mycological study

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    Surekha A

    2015-01-01

    Full Text Available Background: Dermatomycoses are more prevalent in India due to favourable climatic conditions, poverty, poor hygiene and overcrowding. Sparse published data are available regarding superficial dermatomycoses from India. Methods: In this prospective study, demographic characteristics, clinical spectrum and risk factors for the development were studied in 198 patients with superficial dermatomycoses. Results: Their mean age was 34.1 ± 15.3 years; there were 108 (54.5% males. Majority of the patients (50.5% belonged to upper-lower socio-economic status (Class IV as per modified Kuppuswamy’s classification. Most of the patients (69.7% had presented with dermatophytoses. Among superficial dermatomy-coses, tinea corporis was the most common (29.3% clinical type. Potassium hydroxide mount was positive in 77.7% and culture was positive in 30.8%. Trichophyton rubrum was the most common species isolated (64%. Multivariable analysis using logistic regression revealed older age (> 50 years to be an independent predictor for the development of tinea corporis (p<0.001. Conclusions: Our observations suggest that superficial dermatomycoses are an important cause of morbidity and should be carefully searched for especially in the elderly so that effective curative treatment can be instituted.

  5. Tattoo removal by superficial dermabrasion. Five-year experience.

    Science.gov (United States)

    Clabaugh, W A

    1975-04-01

    A 5-year clinical experience using superficial dermabrasion to remove tattoos is presented. This procedure can be done quickly in the office with low patient risk. Good pigment removal is obtained with little or no scar formation. Cases are presented which are typical of the 250 tattoos removed in the last 5 years.

  6. Major Superficial White Matter Abnormalities in Huntington's Disease

    Science.gov (United States)

    Phillips, Owen R.; Joshi, Shantanu H.; Squitieri, Ferdinando; Sanchez-Castaneda, Cristina; Narr, Katherine; Shattuck, David W.; Caltagirone, Carlo; Sabatini, Umberto; Di Paola, Margherita

    2016-01-01

    Background: The late myelinating superficial white matter at the juncture of the cortical gray and white matter comprising the intracortical myelin and short-range association fibers has not received attention in Huntington's disease. It is an area of the brain that is late myelinating and is sensitive to both normal aging and neurodegenerative disease effects. Therefore, it may be sensitive to Huntington's disease processes. Methods: Structural MRI data from 25 Pre-symptomatic subjects, 24 Huntington's disease patients and 49 healthy controls was run through a cortical pattern-matching program. The surface corresponding to the white matter directly below the cortical gray matter was then extracted. Individual subject's Diffusion Tensor Imaging (DTI) data was aligned to their structural MRI data. Diffusivity values along the white matter surface were then sampled at each vertex point. DTI measures with high spatial resolution across the superficial white matter surface were then analyzed with the General Linear Model to test for the effects of disease. Results: There was an overall increase in the axial and radial diffusivity across much of the superficial white matter (p < 0.001) in Pre-symptomatic subjects compared to controls. In Huntington's disease patients increased diffusivity covered essentially the whole brain (p < 0.001). Changes are correlated with genotype (CAG repeat number) and disease burden (p < 0.001). Conclusions: This study showed broad abnormalities in superficial white matter even before symptoms are present in Huntington's disease. Since, the superficial white matter has a unique microstructure and function these abnormalities suggest it plays an important role in the disease. PMID:27242403

  7. Major Superficial White Matter Abnormalities in Huntington disease

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    Owen Robert Phillips

    2016-05-01

    Full Text Available BackgroundThe late myelinating superficial white matter at the juncture of the cortical gray and white matter comprising the intracortical myelin and short-range association fibers has not received attention in Huntington’s disease. It is an area of the brain that is late myelinating and is sensitive to both normal aging and neurodegenerative disease effects. Therefore, it may be sensitive to Huntington’s disease processes. MethodsStructural MRI data from 25 Pre-symptomatic subjects, 24 Huntington’s disease patients and 49 healthy controls was run through a cortical pattern-matching program. The surface corresponding to the white matter directly below the cortical gray matter was then extracted. Individual subject’s Diffusion Tensor Imaging (DTI data was aligned to their structural MRI data. Diffusivity values along the white matter surface were then sampled at each vertex point. DTI measures with high spatial resolution across the superficial white matter surface were then analyzed with the General Linear Model to test for the effects of disease. ResultsThere was an overall increase in the axial and radial diffusivity across much of the superficial white matter (p < 0.001 in Pre-symptomatic subjects compared to controls. In Huntington’s disease patients increased diffusivity covered essentially the whole brain (p < 0.001. Changes are correlated with genotype (CAG repeat number and disease burden (p < 0.001.ConclusionsThis study showed broad abnormalities in superficial white matter even before symptoms are present in Huntington’s disease. Since the superficial white matter has a unique microstructure and function these abnormalities suggest it plays an important role in the disease.

  8. Dejeto líquido bovino em plantio direto: perda de carbono e nitrogênio por escoamento superficial

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    Fabiana de Medeiros Silveira

    2011-10-01

    Full Text Available A utilização de dejetos de animais na produção agrícola é uma alternativa de disposição do resíduo gerado na atividade pecuária, porém se aplicado inadequadamente pode causar problemas ambientais. Nesse sentido, o objetivo geral deste trabalho foi avaliar as concentrações e perdas de C e N por escoamento superficial em quatro doses de dejeto líquido bovino (0, 60, 120, 180 m³ ha-1 ano-1 aplicado em Latossolo franco-argiloarenoso com 13 % de declividade, manejado em plantio direto com soja, aveia-preta, milho e trigo, em sistema de rotação. O escoamento superficial foi coletado durante dois anos e sete meses em galões de 60 L após cada chuva, com geração de escoamento em pelo menos uma parcela. Os nutrientes solúveis foram determinados em amostra filtrada por uma membrana de éster de 0,45 µm e os nutrientes totais, em amostras não filtradas. A aplicação de dejeto líquido bovino reduziu as perdas de C orgânico e N por escoamento superficial, com consequências positivas para a qualidade da água em corpos hídricos a jusante. Porém, doses crescentes de dejeto tendem a aumentar a concentração dos referidos elementos e, por conseguinte, diminuir a qualidade da água. As concentrações médias ponderadas de nitrato estiveram abaixo do limite permitido pela legislação brasileira, porém as de amônio ficaram acima do máximo permitido, indicando a necessidade de práticas de controle e retenção do escoamento superficial, a fim de evitar a entrada do nitrato nos corpos d'água, mesmo em áreas sob plantio direto. Cabe ressaltar que esses dados foram obtidos em condição de baixo potencial poluidor, ou seja, relevo com 13 % de declividade, baixa precipitação e intervalo mínimo de dez dias entre a aplicação do dejeto e a ocorrência de chuva, com formação de escoamento superficial. Além disso, há a necessidade de estudos futuros para avaliar a lixiviação de nitrato.

  9. Tensão superficial, potencial hidrogeniônico e condutividade elétrica de caldas de produtos fitossanitários e adjuvantes

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    João Paulo Arantes Rodrigues da Cunha

    Full Text Available RESUMO A adição de adjuvantes pode alterar as propriedades físico-químicas das caldas de produtos fitossanitários, contribuindo com a qualidade da aplicação. Assim, objetivou-se avaliar o comportamento da associação entre 15 produtos fitossanitários e quatro adjuvantes de uso agrícola na tensão superficial, pH e condutividade elétrica da calda. As análises foram realizadas separadamente para três categorias de produtos: inseticida, fungicida e herbicida. Foi utilizado o delineamento inteiramente casualizado (DIC, em esquema fatorial 5 x 6, com quatro repetições: cinco adjuvantes e seis produtos fitossanitários. A concentração das caldas foi estipulada adotando-se volume de calda de 200 L ha-1 e a dose recomendada pelos fabricantes. As características avaliadas foram: tensão superficial, condutividade elétrica e pH da calda. As médias foram comparadas entre si pelo teste de Scott Knott, a 0,05 de significância. Os resultados dos produtos fitossanitários sobre as características físico-químicas mostraram-se dependentes dos adjuvantes e vice-versa, dada a interação significativa entre os fatores. Dentre os adjuvantes, o que mais reduziu o pH da calda foi o fosfatidilcoline+ácido propiônico. Somente o herbicida clorimurom-etílico não afetou a tensão superficial da calda, que foi reduzida pelos demais produtos. Todos os produtos afetaram a condutividade elétrica, sendo que os maiores aumentos foram obtidos pelos herbicidas 2,4-D dimetilamina e glifosato.

  10. Impacto do desmatamento de uma área de mangue no albedo superficial

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    Carlos Alexandre Santos Querino

    2013-12-01

    Full Text Available Manguezais são ecossistemas peculiares encontrados nas regiões tropicais. A degradação dos manguezais altera o balanço superficial de radiação, e por consequência o albedo. Para avaliar e comparar o albedo, nesse ambiente foram instaladas duas plataformas de coletas de dados micrometeorológicos no município de Marechal Deodoro, Alagoas, Brasil, no período de outubro de 2004 a outubro de 2005. No mangue nativo (9º42' 18"S; 35º 48' 32" W foram instalados dois piranômetros acima da copa das árvores, e em outubro de 2005, um terceiro dentro do mangue. Na área degradada (9º 36' 38" S; 35º 46' 03" W, os sensores foram posicionados a uma altura de dois metros em relação ao solo. Observou-se que o albedo sobre a floresta de mangue, em geral, é maior em média, 5 pontos percentuais superior em relação à outras florestas tropicais, como por exemplo, a Amazônia. Internamente notou-se que o mesmo não ultrapassou os 13% e seu valor máximo ocorre no horário de menor albedo da copa ≈ 20%, evidenciando a influência da maré. Já na área degradada, o albedo médio foi de 35%, o que implica em uma elevação aproximada de 49% quando substituída a cobertura de floresta natural.

  11. Alterações de atributos do solo pela calagem superficial e incorporada a partir de pastagem natural

    Directory of Open Access Journals (Sweden)

    D. S. Rheinheimer

    2000-12-01

    Full Text Available A aplicação superficial de calcário pode ser uma alternativa para a correção da acidez do solo sob plantio direto. Este trabalho avaliou as modificações em alguns atributos químicos provocadas pela aplicação de calcário superficial e incorporado ao solo a partir de pastagem natural. O experimento foi feito na área Experimental do Departamento de Solos da Universidade Federal de Santa Maria (RS, num Argissolo Acinzentado distrófico plíntico. Os tratamentos, com 0,0, 2,0, 8,5 e 17,0 t ha-1 de calcário incorporado na camada de 0-20 cm e em superfície, foram distribuídos em blocos ao acaso, com quatro repetições. Aos 24 meses, reaplicou-se em superfície a dose no tratamento de 2,0 t ha-1. Aos 6, 18, 36 e 48 meses da aplicação do calcário, coletaram-se amostras de solo nas profundidades de 0,0-2,5; 2,5-5,0; 5,0-10,0 e 10,0-15,0 cm. Avaliaram-se os atributos químicos relacionados com a acidez do solo. A correção da acidez do solo foi proporcional à dose de calcário aplicada, independentemente do modo de aplicação. A aplicação de calcário superficial criou uma frente de correção da acidez em profundidade proporcional à dose e ao tempo. Foram necessários 36 meses para que a saturação com alumínio atingisse nível próximo de zero na camada de 0,0-2,5 cm com a aplicação de 2,0 + 2,0 t ha-1; 36 meses para a camada 2,5-5,0 cm com 8,5 t ha-1; e 48 meses para a camada 5,0-10,0 cm com 17,0 t ha-1.

  12. Superficial corneal foreign body: laboratory and epidemiologic aspects Corpo estranho corneal superficial: aspectos laboratoriais e epidemiológicos

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    Ednajar Tavares Macedo Filho

    2005-12-01

    Full Text Available PURPOSE: To determine by bacterioscopy and culture the microorganisms carried by corneal foreign body and their sensitivity to antibiotics by antibiotic sensitivity test. METHODS: A prospective study was carried out and information was collected on 101 patients who presented with corneal foreign body at the São Paulo Hospital Eye Emergency Service. Prior to any treatment, a sample of the ipsilateral inferior conjunctival fornix and the foreign body were collected and immersed in thioglycolate broth. Samples were sown on solid culture media including blood, chocolate and Sabouraud agar. Bacterioscopic examination using Gram and Giemsa staining and sensitivity test were performed. Positive foreign body culture results were compared to ipsilateral conjunctival fornix culture to exclude possible normal flora growth. RESULTS: Approximately 92% of patients were males with a mean age of 35 years and in 62.4% (95% confidence interval: 52.2 - 71.8% had the right eye was affected. Foreign body positive cultures were achieved in 32.7% (95% confidence interval: 23.7 - 42.7% of the cases. The microorganisms isolated from the foreign body culture were identified as: Streptococcus, alpha-hemolytic (n=4, Staphylococcus aureus (n=4, Staphylococcus, coagulase-negative (n=4, Corynebacterium xerosis (n=3, unidentified Gram-positive bacillus (n=2, Moraxella sp (n=1, Serratia sp (n=1, Acynetobacter sp (n=1. The microbial sensitivity test showed that 95% of the cases were sensitive to chloramphenicol and 90% were sensitive to ciprofloxacin, these being antibiotics used in our routine service. CONCLUSION: Superficial corneal foreign body acts as important contaminant vector and the great majority of isolated bacteria were sensitive to the antibiotic prophylaxis used in the treatment.OBJETIVOS: Identificar por meio de cultura e bacterioscopia os microrganismos veiculados por corpo estranho corneal e sua sensibilidade aos antibióticos em teste de antibiograma. M

  13. A combined chemo-mechanical approach for aesthetic management of superficial enamel defects

    NARCIS (Netherlands)

    Ardu, S.; Benbachir, N.; Stavridakis, M.; Dietschi, D.L.; Krejci, I.; Feilzer, A.J.

    2009-01-01

    Objective The aim of this article is to describe an easy technique for managing small superficial defects in light to medium fluorosis. Method and materials The proposed technique is based on a selective abrasion of the superficial enamel and a recreation of the superficial macro and micro morpholog

  14. A combined chemo-mechanical approach for aesthetic management of superficial enamel defects

    NARCIS (Netherlands)

    Ardu, S.; Benbachir, N.; Stavridakis, M.; Dietschi, D.L.; Krejci, I.; Feilzer, A.J.

    2009-01-01

    Objective The aim of this article is to describe an easy technique for managing small superficial defects in light to medium fluorosis. Method and materials The proposed technique is based on a selective abrasion of the superficial enamel and a recreation of the superficial macro and micro morpholog

  15. Rugosidad y textura de superficies: experimentos y simulaciones

    Directory of Open Access Journals (Sweden)

    Watson L. Vargas

    2006-01-01

    Full Text Available En este trabajo se aplican algunos elementos de la geometría fractal al estudio y caracterización de la rugosidad superficial. Los materiales bajo estudio consisten en agregados naturales, de amplia aplicación en la industria de la construcción. Se aplican tanto técnicas experimentales basadas en análisis de imágenes como modelos teóricos. En particular se explora el potencial de la lacunaridad –un método de análisis derivado de la geometría fractal, para describir patrones y dispersión espacial. Los resultados ilustran su aplicación en la caracterización de rugosidad superficial. Se discuten igualmente, limitaciones y ventajas de esta aproximación.

  16. Effects of superficial gas velocity on process dynamics in bioreactors

    Science.gov (United States)

    Devi, T. T.; Kumar, B.

    2014-06-01

    Present work analyzes the flow hydrodynamics and mass transfer mechanisms in double Rushton and CD-6 impeller on wide range (0.0075-0.25 m/s) of superficial gas velocity ( v g) in a gas-liquid phase bioreactor by employing computational fluid dynamics (CFD) technique. The volume averaged velocity magnitude and dissipation rate are found higher with increasing superficial gas velocity. Higher relative power draw ( P g/ P 0) is predicted in CD-6 than the Rushton impeller but no significant difference in volume averaged mass transfer coefficient ( k L a) observed between these two types of impeller. The ratio of power draw with mass transfer coefficient has been found higher in CD-6 impeller (25-50 %) than the Rushton impeller.

  17. Variation in the Branching Pattern of the Superficial Palmar Arch

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    Sumalatha S

    2016-05-01

    Full Text Available In this article we describe a rare variation in the superficial palmar arch (SPA encountered during routine cadaveric dissection. SPA was formed by the superficial branches of ulnar and radial arteries which provided a proper digital branch to the ulnar side of the little finger and three common palmar digital branches to the medial four digits. Additionally a first common digital artery was seen to emerge from the radial side of SPA which further divided into the arteria princeps pollicis and arteria radialis indicis. We also found a small communicating branch between the arteria princeps pollicis and the radial artery in the anatomical snuff box. Such arterial variations in the palm due to alteration in the developmental sequence remains a crucial issue in the reconstructive hand surgeries, especially while dealing with the innovative microsurgical procedures, where these varied patterns act as pivotal points around which successful results of various advanced surgical procedures revolve.

  18. Movimiento superficial del glaciar rocoso de las Argualas

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    Sanjosé, J. J.

    1995-12-01

    Full Text Available At present the Argualas rock glacier is active and it flows to a surface axial mean velocity of 22,3 cm/year. The flow velocities have been determinated by surveying techniques made between 1991 and 1994. This technic complements the geomorphological observations and deepens in the knov/ledge of the glacier surface dynamics.

    El glaciar rocoso de las Argualas es activo en la actualidad y fluye a una velocidad media axial en superficie de 22.3 cm/año. El flujo se ha determinado median te las técnicas de auscultación topográfica realizadas entre los años 1991 y 1994. Esta técnica ha permitido complementar el análisis geomorfológico, profundizado en el estudio de la dinámica superficial del glaciar.

  19. Endoscopic removal or ablation of oesophageal and gastric superficial tumours.

    Science.gov (United States)

    Deprez, P H; Aouattah, T; Piessevaux, H

    2006-01-01

    Endoscopic mucosal resection was developed in Eastern countries as a curative treatment for superficial carcinomas in the stomach and oesophagus. Experience in Western countries is more recent and limited due to less frequent diagnosis of early gastric cancers compared to the Japanese and Korean populations and to more frequent use of ablation techniques such as argon plasma coagulation and photodynamic therapy in pre-neoplastic lesions and superficial tumours. This review summarizes the respective indications, advantages, disadvantages, limitations and complications of the different ablative and resection techniques in the upper gastrointestinal tract. Several methods are described such as electrocoagulation, argon plasma coagulation, photodynamic therapy, lift and cut resection, cap assisted aspiration and band ligation mucosectomy, and endoscopic submucosal dissection. Local results in more than 170 patients managed with endoscopic resection of oesophageal high grade dysplasia or squamous cell carcinoma and gastric or Barrett's epithelium high grade dysplasia or adenocarcinoma furthermore demonstrate the safety and effectiveness of endoscopic resection practiced in experienced centres.

  20. Causative agents of superficial mycoses in Istanbul, Turkey: retrospective study.

    Science.gov (United States)

    Koksal, Fatma; Er, Emine; Samasti, Mustafa

    2009-09-01

    The aim of the present study was to determine the percentage of agents, which can give rise to superficial fungal infections in Istanbul, Turkey. Between 2000 and 2007, the clinical samples collected from 8,200 patients attending the outpatient Dermatology Clinic at Mihrimahsultan Medical Center were examined by direct microscopy and culture. Pathogen fungi were detected in 5,722 of the patients. Of the isolates were 4,218 (74%) dermatophytes, 1,196 (21%) Candida sp., 170 (3%) Malassezia furfur, and 138 (2%) Trichosporon sp. Among the dermatophytes, Trichophyton sp. was the most common isolate followed by Epidermophyton floccosum (243) and Microsporum sp. Among the Candida species, C. albicans (549) was also frequently found. Onychomycosis was the most prevalent type of infection, followed by tinea pedis, tinea cruris, tinea corporis, and tinea capitis. In conclusion, our study showed that the most common isolated agents from superficial infections were T. rubrum being Candida sp. the second most prevalent.

  1. Measurement of the angle of superficial tension by images

    Science.gov (United States)

    Yanez M., Javier; Alonso R., Sergio

    2006-02-01

    When a liquid is deposited on a surface, this one form a certain angle with respect to the surface, where depending on its value, it will conclude that so hard it is his adhesion with the surface. By means of the analysis of images we looked for to measure this angle of superficial tension. In order to make this measurement, we propose a technique by means of projective transformations and one method of regression to estimation parameters to conic fitting.

  2. Cervical Spinal Meningeal Melanocytoma Presenting as Intracranial Superficial Siderosis

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    Savitha Srirama Jayamma

    2015-01-01

    Full Text Available Meningeal melanocytoma is a rare pigmented tumor of the leptomeningeal melanocytes. This rare entity results in diagnostic difficulty in imaging unless clinical and histopathology correlation is performed. In this case report, we describe a case of meningeal melanocytoma of the cervical region presenting with superficial siderosis. Extensive neuroradiological examination is necessary to locate the source of the bleeding in such patients. Usually, the patient will be cured by the complete surgical excision of the lesion.

  3. Superficial urinary bladder tumors treatment results: A 10-year experience

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    Stanković Jablan

    2007-01-01

    Full Text Available Background/Aim. The most common urinary bladder tumors are superficial tumors. Due to their tension to relapse and progress towards deeper layers after surgical therapy, an adequate therapy significantly contributed to the improvement of the results of urinary bladder tumors treatment. Staging and gradus of the tumor, presence of the carcinoma in situ (CIS or relapses significantly influenced the choice of the therapy. The aim of this study was to ascertain the effectiveness of the intravesicelly applied BCG (Bacille Colmette - Guerin vaccine or chemiotherapy in the prevention of the relapses and further progression of superficial urinary bladder tumors. Methods. All of the diagnosed superficial tumors of bladder were removed by transurethral resection (TUR. After receiving the patohistological finding they were subjected to adjuvant therapy, immune BCG vaccine or chemiotherapy (epirubicin, doxorubicin, mitomycin-C. The third group did not accept adjuvant therapy, but had regularly scheduled cystoscopic controls. The appearance of relapses, progression of stage and grades of the tumor, as well as possible unwanted effects of adjuvant therapy were registered. Results. The applied immunotherapy (BCG influenced decreased tumor relapses (7% and statistically important difference between patients who had taken adjuvant chemotherapy (relapses 18.4% and those without this therapy was acknowledged. Grades of tumor did not show statistically significant difference on tumor relapse. A significantly longer period of time in the appearance of tumor relapse after BCG (29.33 months, had significant importance comparing to chemio (9.44 months or non-taken adjuvant therapy (9.84 months. Very small number of unwanted effects suggested an obligatory undertaking adjuvant therapy after TUR of superficial tumors. Conclusion. A significant decrease of relapses as well as avoidance of further progression of urinary bladder tumors, has introduced adjuvant therapy in

  4. Transient superficial peroneal nerve palsy after anterior cruciate ligament reconstruction

    OpenAIRE

    Majed Alrowaili

    2016-01-01

    A 19-year-old male subject was diagnosed with medial meniscal, lateral meniscal and anterior cruciate ligament (ACL) tear. The symptoms did not subside after 4 months of physical therapy, and he underwent arthroscopic partial medial and lateral meniscectomy and ACL reconstruction. Immediately after the patient woke up from general anesthesia, he started experience loss of sensation in the area of superficial peroneal nerve with inverted dorsiflexion of foot and ankle. Instantly, the bandage a...

  5. Differences in excitability between median and superficial radial sensory axons.

    Science.gov (United States)

    Fujimaki, Yumi; Kanai, Kazuaki; Misawa, Sonoko; Shibuya, Kazumoto; Isose, Sagiri; Nasu, Saiko; Sekiguchi, Yukari; Ohmori, Shigeki; Noto, Yu-ichi; Kugio, Yumiko; Shimizu, Toshio; Matsubara, Shiro; Lin, Cindy S Y; Kuwabara, Satoshi

    2012-07-01

    The aim of this study was to investigate differences in excitability properties of human median and superficial radial sensory axons (e.g., axons innervating the glabrous and hairy skin in the hand). Previous studies have shown that excitability properties differ between motor and sensory axons, and even among sensory axons between median and sural sensory axons. In 21 healthy subjects, threshold tracking was used to examine excitability indices such as strength-duration time constant, threshold electrotonus, supernormality, and threshold change at the 0.2 ms inter-stimulus interval in latent addition. In addition, threshold changes induced by ischemia for 10 min were compared between median and superficial radial sensory axons. Compared with radial sensory axons, median axons showed shorter strength-duration time constant, greater threshold changes in threshold electrotonus (fanning-out), greater supernormality, and smaller threshold changes in latent addition. Threshold changes in both during and after ischemia were greater for median axons. These findings suggest that membrane potential in human median sensory axons is more negative than in superficial radial axons, possibly due to greater activity of electrogenic Na(+)/K(+) pump. These results may reflect adaptation to impulses load carried by median axons that would be far greater with a higher frequency. Biophysical properties are not identical in different human sensory axons, and therefore their responses to disease may differ. Copyright © 2011 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All rights reserved.

  6. Glans-preserving surgery for superficial penile cancer.

    Science.gov (United States)

    Li, Pengchao; Song, Ninghong; Yin, Changjun; Zhang, Wei; Li, Jie; Hua, Lixin; Wang, Zengjun; Cheng, Gong

    2012-01-01

    In this study, we investigated the safety and feasibility of glans-preserving surgery for superficial penile squamous cell carcinoma. Young patients with penile primary tumors exhibiting favorable histologic features were best suited for organ-sparing procedures, enabling them to avoid sexual disturbances. The study included 12 patients, 38-53 years of age (median age 46 years), with superficial lesions involving the glans penis, coronary sulcus, or shaft skin. After clinical staging and grading, those patients were offered a glans-preserving procedure to preserve the normal appearance and functional integrity of the glans penis. Of the 12 patients referred, the tumors were TaG1 in 4 patients, TaG2 in 3, TisG1 in 1, TisG2 in 1, T1G1 in 2, and T1G2 in 1. All patients returned to normal sexual activity 1 month postoperatively. Sexual function and sexual satisfaction were well maintained after surgery. The cosmetic results were considered satisfying/very satisfying by 83% (10 of 12 patients). Follow-up data were available on 12 patients at a mean follow-up of 62.5 months. Only 1 patient had recurrence 6 months after surgery, which was managed by a second glans-preserving surgery without recurrence. With careful patient selection and vigilant follow-up, anatomically suitable superficial penile cancer can be offered this glans-preserving surgery, while preserving function of the penis wherever possible.

  7. A Study of Superficial Mycosis in South Gujarat Region

    Directory of Open Access Journals (Sweden)

    Parul Patel, Summaiya Mulla, Disha Patel, Gaurishankar Shrimali

    2010-12-01

    Full Text Available Aim: To know the seroprevalence of clinical pattern of dermatophytosis and non – dermatophytic fungi (superficial mycosis with most common fungal pathogen in the South Gujarat region of the India. Methods: A clinical and mycological study of superficial mycosis was conducted on 198 cases (127 male and 71 female. Direct microscopy by KOH mount and culture was undertaken to isolate the fungal pathogen in each case. Results: 123 out of 198 cases (62.12% were positive by direct microscopy in which 58 (29.29% were positive by culture. The commonest age group involved was 21 – 30 years. Tinea corporis was the most common clinical presentation and Trichopyton rubrum was the most common fungal pathogen isolated. Non dermatophytic fungus like pityriasis versicolor and yeast like candida species were isolated in 17(22.67% cased and 8 (10.67% cases respectively. Conclusion: It was concluded that along with dermatophytes, nondermatophytic fungi are also emerging as important causes of superficial mycosis.

  8. Caracterización físico-química de la superficie de 9 implantes dentales con 3 distintos tratamientos de superficie

    OpenAIRE

    Rodríguez Rius, Daniel; García Sabán, Francisco

    2005-01-01

    Existen diversos tratamientos de superficie aplicados a los implantes dentales. El objetivo del presente estudio es comparar las características físico-químicas de la superficie de implantes dentales de titanio sometidos a diversos tratamientos de superficie. 9 implantes dentales procedentes del mismo lote de fabricación fueron separados en 3 grupos y sometidos a 3 tipos de tratamiento de superficie diferentes: mecanizado, grabado ácido y un ataque químico denominado Avan...

  9. BCG and the treatment of superficial bladder cancer.

    Science.gov (United States)

    Moss, J T; Kadmon, D

    1991-12-01

    In this report, we review the evolution of bacillus Calmette-Guérin (BCG) immunotherapy as a legitimate form of treatment in superficial, nonmuscle-invasive bladder cancer. In the US, an estimated 45,000 new cases of bladder cancer are diagnosed each year and the annual death rate approaches 11,000. Approximately 70 percent of these cancers are superficial at the time of initial presentation. The treatment of superficial bladder cancer has three objectives: (1) eradication of existing disease, (2) prophylaxis against tumor recurrence, and (3) prevention of tumor progression (either muscular invasion, metastatic spread, or both). Cystectomy generally is reserved for muscle-invasive disease. Transurethral resection of the bladder tumor is the preferred initial therapy. Intravesical instillations of various chemotherapeutic agents following transurethral resection have been extensively investigated. Some of the common agents used include thiotepa, mitomycin, and doxorubicin. Despite such treatment efforts, however, over 40 percent of patients with superficial bladder cancer experience a recurrence of their tumor within three years. Approximately half of these recurrences either present as less-well-differentiated tumors or have already penetrated into the bladder musculature, metastasized, or both. Since Morales et al. first introduced intravesical BCG vaccine for prophylaxis as well as for treatment of superficial bladder tumors in 1976, support has grown rapidly for its use as an alternative to chemotherapy. When used with prophylactic intent following transurethral resection, recurrence rates are lower than those achieved with other agents. In addition, BCG is emerging as the consensus drug of choice for treating carcinoma in situ of the bladder. The mechanisms by which BCG exerts its antitumor activity remain largely unknown. BCG is thought to stimulate a localized, nonspecific inflammatory response that leads to subsequent shedding of tumor cells. A large body

  10. Superficial perineal leiomyosarcoma in an adolescent female and a review of the literature including vulvar leiomyosarcomas

    DEFF Research Database (Denmark)

    Grove, A; Backman Nøhr, S

    1992-01-01

    differentiated and showed immunoreactivity for alpha-smooth muscle actin and desmin. A review of the literature on superficial leiomyosarcomas indicates that superficial perineal leiomyosarcomas may be more aggressive than superficial leiomyosarcomas in general. As the presented tumour occurred in a female......Superficial perineal leiomyosarcomas are rare, with only three previously reported examples. We encountered a superficial (deep subcutaneous) perineal leiomyosarcoma in a 17-year-old female. At follow-up two years after a wide excision, there were no signs of recurrence. The tumour was well...

  11. Intensidade de fluorescência em resina composta: influência do polimento superficial e dos meios de armazenagem

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    Ângela Dalla Nora

    Full Text Available INTRODUÇÃO: A resina composta é um material versátil em Odontologia Estética, principalmente por suas propriedades ópticas, dentre as quais a fluorescência. Poucos são os estudos que avaliaram esta propriedade e a comparação dos resultados encontrados torna-se difícil em função da inexistência de padronização nas metodologias na confecção e na armazenagem dos corpos de prova. OBJETIVO: Verificar a influência do polimento superficial e do meio de armazenagem, em estudos in vitro, em que se avalia a propriedade óptica de fluorescência em resinas compostas. MATERIAL E MÉTODO: Foram preparados 70 corpos de prova circulares (10 mm × 2 mm com resina composta microhíbrida (Opallis,- A2E - FGM. Os meios de armazenagem foram: água deionizada, água da torneira e saliva artificial. Os protocolos de polimento superficial, realizados em politriz após a obtenção dos corpos de prova, utilizaram lixas de granulações 600, 1200 e 2500. Os valores de intensidade de fluorescência foram avaliados através do espectrofotômetro Cary Eclipse, após 1, 7 e 21 dias. RESULTADO: Não houve diferença estatisticamente significativa na Intensidade de Fluorescência entre os grupos submetidos aos diferentes protocolos de polimento. Quanto aos meios de armazenagem, a partir do sétimo dia, a variação de fluorescência foi significativamente maior em água da torneira e deionizada, quando comparada à variação observada em saliva artificial, resultado que se manteve após 21 dias. CONCLUSÃO: O protocolo de polimento superficial não promoveu alterações significativas na fluorescência da resina composta avaliada. Quanto ao meio de armazenagem, a intensidade de fluorescência foi menos afetada quando em saliva artificial.

  12. Estudio de la interacción de bacterias implicadas en la formulación de placa dentro-bacteriana con superficies de titanio comercialmente puro in vitro y su asociación con la peri-implantitis.

    OpenAIRE

    Rodríguez Hernández, Ana Guadalupe

    2009-01-01

    La peri-implantitis puede poner en riesgo la integridad funcional de un implante dental, ya que dependiendo de la severidad del daño, éste puede ocasionar la pérdida irremediable del implante. Dicho padecimiento está asociado directamente con la formación de la placa dento-bacteriana sobre la superficie del implante.En este trabajo de tesis se estudiarón, por un lado las propiedades de superficie de 6 tipos diferentes de tratamientos utilizados en implantes dentales (tales como: la rugosidad,...

  13. Suscetibilidade antimicrobiana de Staphylococcus spp. isolados de cães com pioderma superficial

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    Ana Paula da Silva

    2014-04-01

    Full Text Available Foram obtidas 154 amostras de lesões cutâneas de cães com pioderma superficial atendidos no Serviço de Dermatologia Veterinária do Hospital Veterinário Universitário (HVU da Universidade Federal de Santa Maria (UFSM, com o objetivo de determinar a suscetibilidade antimicrobiana de isolados de Staphylococcus spp. e avaliar a presença de multirresistência. Após isolamento e identificação, as cepas foram submetidas ao teste de sensibilidade aos antimicrobianos, cujos resultados evidenciaram menores percentuais de resistência à associação amoxicilina e ácido clavulânico (1,9%, cefadroxil (1,9%, cefalexina (1,9% e vancomicina (0,6%. Os maiores percentuais de resistência foram frente à amoxicilina (60,4% e penicilina G (60,4%. A multirresistência foi detectada em 23,4% e a resistência à meticilina em 5,8% das amostras. Pode-se concluir que os isolados de Staphylococcus spp. apresentam elevada suscetibilidade aos antimicrobianos comumente utilizados no tratamento dos piodermas superficiais em cães atendidos no HVU-UFSM, como a cefalexina e a amoxicilina associada ao ácido clavulânico, confirmando a eleição desses fármacos para o tratamento de cães com esta afecção. A suscetibilidade diminuída das cepas frente às fluoroquinolonas, também recomendadas pela literatura para o tratamento de pioderma, permite sugerir que estes fármacos não devem mais ser considerados na seleção empírica. A identificação de Staphylococcus spp. multirresistentes na população canina estudada justifica análises bacteriológicas periódicas e regionais de lesões cutâneas de cães com pioderma superficial, a fim de minimizar a seleção de bactérias resistentes, possíveis falhas terapêuticas e também motiva a antimicrobianoterapia prudente.

  14. Ingeniería de superficies y su impacto medioambiental

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    Agüero, A.

    2007-02-01

    Full Text Available Surface engineering addresses the modification of the microstructure and/or composition of the surface of components by mechanical, physical or chemical methods that may imply adding a material in order to change the surface properties of said component. One of its most important consequences is the significant increase of the useful life of a variety of components in a large number of industrial applications. Moreover, it contributes to energy savings by increasing efficiencies as it allows higher combustion temperatures, by allowing the use of lighter components and by significant friction reduction. In this paper, surface engineering is introduced, as well as its different modalities, examples of industrial applications and positive and negative environmental impacts.

    La ingeniería de superficies consiste en la modificación de la microestructura y/o la composición superficial de un componente mediante métodos mecánicos, físicos o químicos, que pueden implicar el aporte de otro material para cambiar las propiedades superficiales del mencionado componente. Una de sus consecuencias más importantes es que permite alargar significativamente, la vida útil de todo tipo de componentes empleados en un gran número de aplicaciones industriales. Por otra parte, contribuye al ahorro energético por permitir el aumento de las temperaturas de combustión consiguiendo una mayor eficiencia, por contribuir a la reducción de peso y por colaborar de forma significativa a disminuir la fricción entre componentes. En el presente trabajo se introduce la ingeniería de superficies, sus diferentes modalidades, algunos ejemplos de sus aplicaciones industriales y las interacciones, positivas y negativas, con el medio ambiente.

  15. Endoscopic mucosectomy: an alternative treatment for superficial esophageal cancer.

    Science.gov (United States)

    Lambert, R

    2000-01-01

    Recent trends in the management of superficial esophageal cancer consist of improved detection, pretherapeutic staging and reliable criteria for curative endoscopic therapy. The endoscopic treatment is legitimate when the cancer is at an early stage, intra-epithelial or microinvasive (m1 or m2) and N0. Submucosal cancer should not be treated with a curative intent by endotherapy. Concerning squamous cell cancer, the oriental and occidental pathologists include high-grade dysplasia in the same group as intramucosal cancer. The distinction is however maintained for adenocarcinoma in the Barrett's esophagus. Indications of endoscopic rather than surgical treatment rely on: (1) the small size of the tumor (not more than 2 cm in diameter); (2) the endoscopic morphology in the type 0 of the Japanese classification with the flat subtypes IIa and IIb rather than type IIc--there is high risk of submucosal invasion for the polypoid (type I) or ulcerated superficial cancer (type III); and (3) the endoscopic ultrasound staging, with confirmed integrity of the hyperechoic submucosal layer. The high-frequency (20 MHz) miniprobe is preferred to the standard (7.5 MHz) instrument. The elective procedure for tumor eradication is endoscopic mucosectomy. The technique is associated with a 6.8% risk of severe complications (hemorrhage or perforation) and a recurrence rate of 3%-7%. The 5-year survival rate is similar to that of surgery (over 80%). In the small group of patients with superficial esophageal cancer (less than 10% of the disease) endoscopic treatment may now be proposed in about 30% of cases, surgery is preferred for submucosal cancer and for neoplasia with a large surface. Areas of high-grade dysplasia in the Barrett's esophagus offer a new and increasing sector of indications. The concurrent endoscopic procedure of destruction--photodynamic therapy--is preferred for the destruction of lesions with poorly delineated limits.

  16. Functional compartmentalization of the human superficial masseter muscle.

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    Rodrigo A Guzmán-Venegas

    Full Text Available Some muscles have demonstrated a differential recruitment of their motor units in relation to their location and the nature of the motor task performed; this involves functional compartmentalization. There is little evidence that demonstrates the presence of a compartmentalization of the superficial masseter muscle during biting. The aim of this study was to describe the topographic distribution of the activity of the superficial masseter (SM muscle's motor units using high-density surface electromyography (EMGs at different bite force levels. Twenty healthy natural dentate participants (men: 4; women: 16; age 20±2 years; mass: 60±12 kg, height: 163±7 cm were selected from 316 volunteers and included in this study. Using a gnathodynamometer, bites from 20 to 100% maximum voluntary bite force (MVBF were randomly requested. Using a two-dimensional grid (four columns, six electrodes located on the dominant SM, EMGs in the anterior, middle-anterior, middle-posterior and posterior portions were simultaneously recorded. In bite ranges from 20 to 60% MVBF, the EMG activity was higher in the anterior than in the posterior portion (p-value = 0.001.The center of mass of the EMG activity was displaced towards the posterior part when bite force increased (p-value = 0.001. The topographic distribution of EMGs was more homogeneous at high levels of MVBF (p-value = 0.001. The results of this study show that the superficial masseter is organized into three functional compartments: an anterior, a middle and a posterior compartment. However, this compartmentalization is only seen at low levels of bite force (20-60% MVBF.

  17. Functional compartmentalization of the human superficial masseter muscle.

    Science.gov (United States)

    Guzmán-Venegas, Rodrigo A; Biotti Picand, Jorge L; de la Rosa, Francisco J Berral

    2015-01-01

    Some muscles have demonstrated a differential recruitment of their motor units in relation to their location and the nature of the motor task performed; this involves functional compartmentalization. There is little evidence that demonstrates the presence of a compartmentalization of the superficial masseter muscle during biting. The aim of this study was to describe the topographic distribution of the activity of the superficial masseter (SM) muscle's motor units using high-density surface electromyography (EMGs) at different bite force levels. Twenty healthy natural dentate participants (men: 4; women: 16; age 20±2 years; mass: 60±12 kg, height: 163±7 cm) were selected from 316 volunteers and included in this study. Using a gnathodynamometer, bites from 20 to 100% maximum voluntary bite force (MVBF) were randomly requested. Using a two-dimensional grid (four columns, six electrodes) located on the dominant SM, EMGs in the anterior, middle-anterior, middle-posterior and posterior portions were simultaneously recorded. In bite ranges from 20 to 60% MVBF, the EMG activity was higher in the anterior than in the posterior portion (p-value = 0.001).The center of mass of the EMG activity was displaced towards the posterior part when bite force increased (p-value = 0.001). The topographic distribution of EMGs was more homogeneous at high levels of MVBF (p-value = 0.001). The results of this study show that the superficial masseter is organized into three functional compartments: an anterior, a middle and a posterior compartment. However, this compartmentalization is only seen at low levels of bite force (20-60% MVBF).

  18. An improved MRI guided ultrasound system for superficial tumor hyperthermia

    Science.gov (United States)

    Zhu, Mengyuan; Shen, Guofeng; Su, Zhiqiang; Chen, Sheng; Wu, Hao

    2017-03-01

    Among many methods in tumor treatment, ultrasound hyperthermia is characterized by non-invasiveness, and it has been proven very effective for clinical treatment. But the problem of monitoring temperature limits its development. MRI-based temperature mapping techniques are safe compared with invasive methods and have been applied to detect temperature changes for a variety of applications. Among these techniques, the proton resonance frequency (PRF) method is relatively advanced. With a temperature measuring experiment and experiment conducted on tumors inside rabbit legs, the effectiveness of PRF method has been proved. This paper is to introduce an MRI guided ultrasound superficial tumor hyperthermia instrument based on PRF method.

  19. Composicion y deformacion de curvas, superficies y volumenes de bezier

    OpenAIRE

    Canchoa Quispe, Alessandri

    1998-01-01

    El presente trabajo enfoca el problema de la composición y deformación de cla¬vas, superficies y volúmenes de Bézier. Los algoritmos para encontrar los puntos de control de la composición (F=Fog) de simplejos o formas de producto tensorial de Bézier g:Rn -> RwyF:RN->Rd a partir de los puntos de control de g y F tienen aplicaciones práctica en el CAGD (Computer Aided Geometric Design). Estos algoritmos inicialmente fue presentado por DeRose [DeRo 88]: el algoritmo producto para la deformación ...

  20. Aneurysm of the superficial palmar arch: a case report.

    Science.gov (United States)

    Estrella, Emmanuel P; Lee, Ellen Y

    2008-01-01

    Aneurysms of the hand are uncommon lesions. The most common location is the ulnar artery. We present a case of a young female who consulted us for a hand mass with a history of trauma to the hand. Pre-operative arteriogram showed a superficial palmar arch aneurysm. The mass was excised and the arch was reconstructed using a reversed Y-shaped vein graft. Fourteen months after surgery, there was no recurrence of the aneurysm and the patient only reported occasional cold intolerance.

  1. Endoscopic and biopsy diagnoses of superficial, nonampullary, duodenal adenocarcinomas

    Science.gov (United States)

    Kakushima, Naomi; Kanemoto, Hideyuki; Sasaki, Keiko; Kawata, Noboru; Tanaka, Masaki; Takizawa, Kohei; Imai, Kenichiro; Hotta, Kinichi; Matsubayashi, Hiroyuki; Ono, Hiroyuki

    2015-01-01

    AIM: To investigate the accuracy of endoscopic or biopsy diagnoses of superficial nonampullary duodenal epithelial tumors (NADETs). METHODS: Clinicopathological data were reviewed for 84 superficial NADETs from 74 patients who underwent surgery or endoscopic resection between September 2002 and August 2014 at a single prefectural cancer center. Superficial NADETs were defined as lesions confined to the mucosa or submucosa. Demographic and clinicopathological data were retrieved from charts, endoscopic and pathologic reports. Endoscopic reports included endoscopic diagnosis, location, gross type, diameter, color, and presence or absence of biopsy. Endoscopic diagnoses were made by an endoscopist in charge of the examination before biopsy specimens were obtained. Endoscopic images were obtained using routine, front-view, high-resolution video endoscopy, and chromoendoscopy with indigocarmine was performed for all lesions. Endoscopic images were reviewed by at least two endoscopists to assess endoscopic findings indicative of carcinoma. Preoperative diagnoses based on endoscopy and biopsy findings were compared with histological diagnoses of resected specimens. Sensitivity, specificity, and accuracy were assessed for endoscopic diagnosis and biopsy diagnosis. RESULTS: The majority (81%) of the lesions were located in the second portion of the duodenum. The median lesion diameter was 14.5 mm according to final histology. Surgery was performed for 49 lesions from 39 patients, and 35 lesions from 35 patients were endoscopically resected. Final histology confirmed 65 carcinomas, 15 adenomas, and 3 hyperplasias. A final diagnosis of duodenal carcinoma was made for 91% (52/57) of the lesions diagnosed as carcinoma by endoscopy and 93% (42/45) of the lesions diagnosed as carcinoma by biopsy. The sensitivity, specificity, and accuracy of endoscopic diagnoses were 80%, 72%, and 78%, respectively, whereas those of biopsy diagnoses were 72%, 80%, and 74%, respectively

  2. Drenaje suplementario del sistema venoso superficial en colgajos pediculados Supplementary drainage of superficial venous system in pedicled flaps

    OpenAIRE

    Fernández García,A.; C. Fernández Pascual; R.A. Moreno Villalba; Ll. Gerrero Navarro

    2012-01-01

    Los colgajos pediculados pueden sufrir edema y congestión debido a que su drenaje a trevés del sistema venoso superfical es imposible y el flujo hacia el sistema profundo a nivel del pedículo es precario. Esta situación suele evolucionar hacia la necrosis parcial o la pérdida total del colgajo en pocas horas. La apertura del sistema venoso superficial permite el drenaje adecuado de los tejidos transferidos y evita estas complicaciones. Este artículo analiza el papel de las anastomosis microqu...

  3. Clinical Evaluation of Superficial Fungal Infections in Children

    Directory of Open Access Journals (Sweden)

    Ragıp Ertaş

    2015-12-01

    Full Text Available Objective: This retrospective study was referred to evaluate 51 cases of superficial mycoses, referred to our Pediatric Dermatology outpatient clinic in one year. Methods: We reviewed following data for all patients: age, gender, accompanied diseases, clinical types, localization and treatment. Superficial mycotic infections were diagnosed on the basis of clinical picture, direct microscopy and some of them were confirmed by fungal cultures. Results: Our patients comprised 33 boys (64.7% and 18 girls (35.3%, with an average age of 6.2 years (range 4 months to 17 years. Eighteen patients (35.3% had dermatophytes on the scalp. Clinical forms, in the order of frequency, were: tinea capitis profunda in 10 patients (19.6%, tinea capitis superficialis in 8 patients (15.8%, tinea unguium in 8 patients (15.8%. Tinea capitis (35.3% was the most frequent form of dermatomycosis. The most common symptom was the pruritus. Thirty (58% patients were treated with local antimycotics and 21 (42% patients were treated with systemic terbinafine or itraconazole. Conclusion: In this study it was found that, tinea capitis was the most frequent form of dermatomycosis and onychomycosis in children are not uncommon as it is mentioned. The data also suggest that topical antifungal agents may be effective and well-tolerated in the treatment of onychomycosis and tinea capitis in children.

  4. Superficially located enlarged lymphoid follicles characterise nodular gastritis.

    Science.gov (United States)

    Okamura, Takuma; Sakai, Yasuhiro; Hoshino, Hitomi; Iwaya, Yugo; Tanaka, Eiji; Kobayashi, Motohiro

    2015-01-01

    Nodular gastritis is a form of chronic Helicobacter pylori gastritis affecting the gastric antrum and characterised endoscopically by the presence of small nodular lesions resembling gooseflesh. It is generally accepted that hyperplasia of lymphoid follicles histologically characterises nodular gastritis; however, quantitative analysis in support of this hypothesis has not been reported. Our goal was to determine whether nodular gastritis is characterised by lymphoid follicle hyperplasia.The number, size, and location of lymphoid follicles in nodular gastritis were determined and those properties compared to samples of atrophic gastritis. The percentages of high endothelial venule (HEV)-like vessels were also evaluated.The number of lymphoid follicles was comparable between nodular and atrophic gastritis; however, follicle size in nodular gastritis was significantly greater than that seen in atrophic gastritis. Moreover, lymphoid follicles in nodular gastritis were positioned more superficially than were those in atrophic gastritis. The percentage of MECA-79 HEV-like vessels was greater in areas with gooseflesh-like lesions in nodular versus atrophic gastritis.Superficially located hyperplastic lymphoid follicles characterise nodular gastritis, and these follicles correspond to gooseflesh-like nodular lesions observed endoscopically. These observations suggest that MECA-79 HEV-like vessels could play at least a partial role in the pathogenesis of nodular gastritis.

  5. Suction based mechanical characterization of superficial facial soft tissues.

    Science.gov (United States)

    Weickenmeier, J; Jabareen, M; Mazza, E

    2015-12-16

    The present study is aimed at a combined experimental and numerical investigation of the mechanical response of superficial facial tissues. Suction based experiments provide the location, time, and history dependent behavior of skin and SMAS (superficial musculoaponeurotic system) by means of Cutometer and Aspiration measurements. The suction method is particularly suitable for in vivo, multi-axial testing of soft biological tissue including a high repeatability in subsequent tests. The campaign comprises three measurement sites in the face, i.e. jaw, parotid, and forehead, using two different loading profiles (instantaneous loading and a linearly increasing and decreasing loading curve), multiple loading magnitudes, and cyclic loading cases to quantify history dependent behavior. In an inverse finite element analysis based on anatomically detailed models an optimized set of material parameters for the implementation of an elastic-viscoplastic material model was determined, yielding an initial shear modulus of 2.32kPa for skin and 0.05kPa for SMAS, respectively. Apex displacements at maximum instantaneous and linear loading showed significant location specificity with variations of up to 18% with respect to the facial average response while observing variations in repeated measurements in the same location of less than 12%. In summary, the proposed parameter sets for skin and SMAS are shown to provide remarkable agreement between the experimentally observed and numerically predicted tissue response under all loading conditions considered in the present study, including cyclic tests.

  6. A study of uniaxial tension on the superficial dermal microvasculature.

    Science.gov (United States)

    Barnhill, R L; Bader, D L; Ryan, T J

    1984-05-01

    A spring-loaded apparatus was designed to apply uniaxial tension to forearm skin in 17 human subjects--10 normals, 6 psoriatics, and 1 patient with scleroderma. Simultaneously, the effects of stretching on the upper dermal vasculature were observed stereomicroscopically. Progressive changes (collapse) in the superficial microvasculature--vertical capillary loops and horizontal subpapillary plexus--with increasing tension were photographed. Force and strains were recorded at the points of disappearance of virtually all vessels. An average force of 11.9 newtons (N), accompanied by a mean strain of 10.3%, resulted in occlusion of all vessels. A much higher force (18.5 N) was necessary to occlude blood flow in the 1 patient with scleroderma. In summary, we have described a new technique for the study of mechanical forces on the blood supply of the epidermis. The data have shown that uniaxial tension has important effects on the superficial dermal microvasculature, resulting in impedance and obliteration of blood flow at relatively low magnitudes.

  7. Aneurysms of the superficial venous system: classification and treatment

    Directory of Open Access Journals (Sweden)

    Ronald G. Bush

    2014-11-01

    Full Text Available Superficial venous aneurysms are rarely described and they may remain indolent or become the source for pulmonary emboli. A system of classification and treatment protocol according to size and location is proposed. Three hundred thirty patients were evaluated for symptomatic venous disease (C2-C6 over a 2-year period. A proposed designation for venous aneurysm is described. Patients fulfilling this criterion are described in reference to site of involvement, histologic findings, and method of treatment. Five percent of patients met the criteria for venous aneurysm. Nine aneurysms of the greater saphenous vein were identified. Three aneurysms were proximal to the subterminal valve and the rest were distal. Six aneurysms of the anterior accessory greater saphenous vein (AAGSV were identified. Three aneurysms of the AAGSV spontaneously thrombosed. Two patients presented with aneurysms of the small saphenous vein. Histology revealed thickened intima, smooth muscle and adventitia. Aneurysm designation relates to diameter of normal and contiguous vein. All superficial venous aneurysms in close proximity to the junction of the femoral or popliteal vein should be ligated. Classification of venous aneurysms should include the AAGSV, which may present with spontaneous thrombosis.

  8. Expression of matrix metalloproteinases 2 and 9 in human gastric cancer and superficial gastritis.

    Science.gov (United States)

    Sampieri, Clara Luz; de la Peña, Sol; Ochoa-Lara, Mariana; Zenteno-Cuevas, Roberto; León-Córdoba, Kenneth

    2010-03-28

    To assess expression of matrix metalloproteinases 2 (MMP2) and MMP9 in gastric cancer, superficial gastritis and normal mucosa, and to measure metalloproteinase activity. MMP2 and MMP9 mRNA expression was determined by quantitative real-time polymerase chain reaction. Normalization was carried out using three different factors. Proteins were analyzed by quantitative gelatin zymography (qGZ). 18S ribosomal RNA (18SRNA) was very highly expressed, while hypoxanthine ribosyltransferase-1 (HPRT-1) was moderately expressed. MMP2 was highly expressed, while MMP9 was not detected or lowly expressed in normal tissues, moderately or highly expressed in gastritis and highly expressed in cancer. Relative expression of 18SRNA and HPRT-1 showed no significant differences. Significant differences in MMP2 and MMP9 were found between cancer and normal tissue, but not between gastritis and normal tissue. Absolute quantification of MMP9 echoed this pattern, but differential expression of MMP2 proved conflictive. Analysis by qGZ indicated significant differences between cancer and normal tissue in MMP-2, total MMP-9, 250 and 110 kDa bands. MMP9 expression is enhanced in gastric cancer compared to normal mucosa; interpretation of differential expression of MMP2 is difficult to establish.

  9. Expression of matrix metalloproteinases 2 and 9 in human gastric cancer and superficial gastritis

    Science.gov (United States)

    Sampieri, Clara Luz; de la Peña, Sol; Ochoa-Lara, Mariana; Zenteno-Cuevas, Roberto; León-Córdoba, Kenneth

    2010-01-01

    AIM: To assess expression of matrix metalloproteinases 2 (MMP2) and MMP9 in gastric cancer, superficial gastritis and normal mucosa, and to measure metalloproteinase activity. METHODS: MMP2 and MMP9 mRNA expression was determined by quantitative real-time polymerase chain reaction. Normalization was carried out using three different factors. Proteins were analyzed by quantitative gelatin zymography (qGZ). RESULTS: 18S ribosomal RNA (18SRNA) was very highly expressed, while hypoxanthine ribosyltransferase-1 (HPRT-1) was moderately expressed. MMP2 was highly expressed, while MMP9 was not detected or lowly expressed in normal tissues, moderately or highly expressed in gastritis and highly expressed in cancer. Relative expression of 18SRNA and HPRT-1 showed no significant differences. Significant differences in MMP2 and MMP9 were found between cancer and normal tissue, but not between gastritis and normal tissue. Absolute quantification of MMP9 echoed this pattern, but differential expression of MMP2 proved conflictive. Analysis by qGZ indicated significant differences between cancer and normal tissue in MMP-2, total MMP-9, 250 and 110 kDa bands. CONCLUSION: MMP9 expression is enhanced in gastric cancer compared to normal mucosa; interpretation of differential expression of MMP2 is difficult to establish. PMID:20333791

  10. Superficie regladas y desarrollables a lo largo de curvas Bézier.

    OpenAIRE

    Londoño Arboleda, Mauricio Alejando

    2010-01-01

    Se estudian superficies regladas y se abordan sus elementos básicos como la línea de estricción y el parámetro de distribución. Se estudian algoritmos para el diseño de superficies desarrollables, a saber el algoritmo de Aumann y el algoritmo proyectivo de Pottmann, en este ´ ultimo las superficies desarrollables racionales de Bezier se interpretan como curvas en el espacio proyectivo dual (P3).Se estudia de manera exhaustiva el problema de diseño de superficies desarrollables de grado polino...

  11. Superficial aponeurosis of human gastrocnemius is elongated during contraction: implications for modeling muscle-tendon unit.

    Science.gov (United States)

    Muramatsu, Tadashi; Muraoka, Tetsuro; Kawakami, Yasuo; Fukunaga, Tetsuo

    2002-02-01

    Two questions were addressed in this study: (1) how much strain of the superficial aponeurosis of the human medial gastrocnemius muscle (MG) was obtained during voluntary isometric contractions in vivo, (2) whether there existed inhomogeneity of the strain along the superficial aponeurosis. Seven male subjects, whose knees were extended and ankles were flexed at right angle, performed isometric plantar flexion while elongation of superficial aponeurosis of MG was determined from the movements of the intersections made by the superficial aponeurosis and fascicles using ultrasonography. The strain of the superficial aponeurosis at the maximum voluntary contraction, estimated from the elongation and length data, was 5.6+/-1.2%. There was no significant difference in strain between the proximal and distal parts of the superficial aponeurosis. Based on the present result and that of our previous study for the same subjects (J. Appl. Physiol 90 (2001) 1671), a model was formulated for a contracting uni-pennate muscle-tendon unit. This model, which could be applied to isometric contractions at other angles and therefore of wide use, showed that similar strain between superficial and deep aponeuroses of MG contributed to homogeneous fascicle length change within MG during contractions. These findings would contribute to clarifying the functions of the superficial aponeurosis and the effects of the superficial aponeurosis elongation on the whole muscle behavior.

  12. A rare variant of the superficial ulnar artery, and its clinical implications: a case report

    Directory of Open Access Journals (Sweden)

    Senanayake Kithsiri J

    2007-11-01

    Full Text Available Abstract The superficial ulnar artery is a rare variation of the upper limb arterial system that arises from the brachial or axillary artery and runs superficial to the muscles arising from the medial epicondyle 123. The incidence is about 0.7 to 7% 145. In our routine dissections we found a superficial ulnar artery, which crossed the cubital fossa superficial to the bicipital aponeurosis making it highly vulnerable to intra-arterial injection. This is a rare variation that every medical and nursing staff member should know about.

  13. What factors control the superficial lava dome explosivity?

    Science.gov (United States)

    Boudon, Georges; Balcone-Boissard, Hélène; Villemant, Benoit; Morgan, Daniel J.

    2015-04-01

    Dome-forming eruption is a frequent eruptive style; lava domes result from intermittent, slow extrusion of viscous lava. Most dome-forming eruptions produce highly microcrystallized and highly- to almost totally-degassed magmas which have a low explosive potential. During lava dome growth, recurrent collapses of unstable parts are the main destructive process of the lava dome, generating concentrated pyroclastic density currents (C-PDC) channelized in valleys. These C-PDC have a high, but localized, damage potential that largely depends on the collapsed volume. Sometimes, a dilute ash cloud surge develops at the top of the concentrated flow with an increased destructive effect because it may overflow ridges and affect larger areas. In some cases, large lava dome collapses can induce a depressurization of the magma within the conduit, leading to vulcanian explosions. By contrast, violent, laterally directed, explosions may occur at the base of a growing lava dome: this activity generates dilute and turbulent, highly-destructive, pyroclastic density currents (D-PDC), with a high velocity and propagation poorly dependent on the topography. Numerous studies on lava dome behaviors exist, but the triggering of lava dome explosions is poorly understood. Here, seven dome-forming eruptions are investigated: in the Lesser Antilles arc: Montagne Pelée, Martinique (1902-1905, 1929-1932 and 650 y. BP eruptions), Soufrière Hills, Montserrat; in Guatemala, Santiaguito (1929 eruption); in La Chaîne des Puys, France (Puy de Dome and Puy Chopine eruptions). We propose a new model of superficial lava-dome explosivity based upon a textural and geochemical study (vesicularity, microcrystallinity, cristobalite distribution, residual water contents, crystal transit times) of clasts produced by these key eruptions. Superficial explosion of a growing lava dome may be promoted through porosity reduction caused by both vesicle flattening due to gas escape and syn-eruptive cristobalite

  14. Lower body lift with superficial fascial system suspension.

    Science.gov (United States)

    Lockwood, T

    1993-11-01

    Multiple body contour deformities of the trunk and thighs are commonly treated in separate stages to limit postoperative complications and disability. Recent advances in the surgical design of the medial thigh lift and the lateral thigh/buttock lift along with an understanding of the functional anatomy of the superficial fascial system have significantly improved results and decreased complications of trunk/thigh lifts. The enhanced safety of current trunk/thigh lifts has allowed new combinations to treat multiple body contour deformities in a single stage. Laxity of the entire lower trunk and thigh regions can be treated in one stage in selected patients. The lower body lift combines the transverse flank/thigh/buttock lift and the fascial anchoring medial thigh lift in one operation. In addition to the expected tightening of the flank, buttocks, and total thighs, this procedure results in a surprising degree of epigastric and hypogastric tightening of mild to moderate abdominal laxity without direct surgical undermining or umbilical transposition. Ten patients having the lower body lift alone or in combination with liposuction and other body contouring procedures were followed for 6 to 24 months. The primary indication for surgery is moderate to severe soft-tissue laxity of the lower trunk and thighs with minimal or mild residual fat deposits. Skin contour irregularities due to skin laxity (cellulite of laxity) or to postliposuction adhesions are frequently present and may be severe. Patients with significant fat deposits may be treated initially with liposuction 3 to 4 months earlier to become candidates for this procedure. Key technical elements of this procedure include (1) both supine and lateral decubitus positioning with the hip flexed and abducted to allow overcorrection, (2) appropriate direct surgical undermining through superficial fascial system zones of adherence in the superior thigh while avoiding the lymphatics of the femoral triangle, (3) more

  15. Superficial Granulomatous Pyoderma Gangrenosum of the Penis: A Case Report

    Directory of Open Access Journals (Sweden)

    Shyamala S. Gopi

    2006-01-01

    Full Text Available Classic type of pyoderma gangrenosum (PG is an uncommon ulceronecrotic cutaneous disease of uncertain aetiology characterised by broad zones of confluent ulceration with violaceous undermined margins. Some 50% of cases are associated with systemic diseases. The superficial granulomatous variant of pyoderma gangrenosum (SGPG of the external genitalia is extremely rare Patients with this condition develop single or multiple ulcerated skin lesions often with sinus tract formation. The majority of these lesions were found on the trunk and limbs. SGPG is less likely to be associated with underlying disease processes than classic PG. We present a 58 year-old with recalcitrant penile ulceration demonstrated to be SGPG on biopsy. Although rare and poorly recognised, the histological features are sufficiently typical to allow the correct diagnosis to be established.

  16. Transient Superficial Peroneal Nerve Palsy After Anterior Cruciate Ligament Reconstruction.

    Science.gov (United States)

    Alrowaili, Majed

    2016-04-26

    A 19-year-old male subject was diagnosed with medial meniscal, lateral meniscal and anterior cruciate ligament (ACL) tear. The symptoms did not subside after 4 months of physical therapy, and he underwent arthroscopic partial medial and lateral meniscectomy and ACL reconstruction. Immediately after the patient woke up from general anesthesia, he started experience loss of sensation in the area of superficial peroneal nerve with inverted dorsiflexion of foot and ankle. Instantly, the bandage and knee brace was removed and a diagnosis of compartment syndrome was ruled out. After eight hours, post-operatively, the patient started receiving physiotherapy. He complained of numbness and tingling in the same area. After 24 h, post-operatively, the patient started to regain dorsiflexion and eversion gradually. Two days after the surgery, the patient exhibited complete recovery of neurological status.

  17. Superficial Circumflex Iliac Artery Perforator Flap for Dorsalis Pedis Reconstruction.

    Science.gov (United States)

    Tashiro, Kensuke; Yamashita, Shuji

    2017-04-01

    Reconstruction of dorsalis pedis with soft tissue is challenging because it needs to preserve thin structure to ensure that the patient will be able to wear shoes. Here, we report the use of a thin superficial circumflex iliac artery perforator (SCIP) flap in dorsalis pedis reconstruction. A 67-year-old man presented with a third-degree burn, which exposed his extensor tendons. A thin SCIP flap from the left inguinal region measuring 15 × 4 cm was transferred to the dorsalis pedis region. Postoperatively, no major cosmetic or functional problems were observed. Because the invasiveness of the donor site is nearly same between SCIP flap and skin graft from inguinal region, SCIP flap is better solution in point of textural qualities for dorsalis pedis reconstruction.

  18. MRI evaluation of superficial soft tissue lesions in children

    Energy Technology Data Exchange (ETDEWEB)

    Jabra, A.A. (Russel H. Morgan Dept. of Radiology and Radiological Sciences, Johns Hopkins Medical Institutions, Baltimore, MD (United States)); Taylor, G.A. (Russel H. Morgan Dept. of Radiology and Radiological Sciences, Johns Hopkins Medical Institutions, Baltimore, MD (United States))

    1993-10-01

    The role of MRI in the evaluation of superficial soft tissue lesions in children has not been well established. We present our experience with MRI in the evaluation of nineteen children with a variety of cutaneous and subcutaneous lesions. We find MRI to have a definite role in the evaluation of these lesions particularly when determining extent or depth of involvement would affect medical or surgical management. MRI has a less well defined role in tissue determination. Spin echo T1 and T2 weighted images were sufficient for evaluation in most cases. Fat suppression images added additional information in fatty tumors. The MRI appearance of juvenile hyaline fibromatosis and lipoblastomatosis has not been previously described and is included in this study. (orig.)

  19. Multiple superficial basal cell carcinomas (basalomatosis) following cobalt irradiation

    Energy Technology Data Exchange (ETDEWEB)

    Wollenberg, A.; Przybilla, B. [Muenchen Univ. (Germany). Dermatologische Klinik und Poliklinik; Peter, R.U. [Federal Armed Forces Medical Academy, Munich (Germany). Inst. of Radiobiology

    1995-10-01

    Basalomatosis is an uncommon skin condition characterized by the occurrence of multiple basal cell carcinomas. Many cases reported in the literature have been attributed to arsenic treatment in psoriasis patients. We report a patient with basalomatosis caused by cobalt-60 ({sup 60}Co) irradiation. A 55-year-old farmer developed 43 basal cell carcinomas 20 years after treatment of an immuno-blastoma with {sup 60}Co irradiation. All the tumours were located within the radiation fields. Other possible causes of basalomatosis, such as arsenic intoxication and basal cell naevus syndrome, were excluded. The patient`s multiple superficial basal cell carcinomas probably represent a late adverse effect of the {sup 60}Co irradiation. (Author).

  20. Superficial stellate cells of the dorsal cochlear nucleus

    Directory of Open Access Journals (Sweden)

    Pierre F. Apostolides

    2014-06-01

    Full Text Available The dorsal cochlear nucleus (DCN integrates auditory and multisensory signals at the earliest levels of auditory processing. Proposed roles for this region include sound localization in the vertical plane, head orientation to sounds of interest, and suppression of sensitivity to expected sounds. Auditory and non-auditory information streams to the DCN are refined by a remarkably complex array of inhibitory and excitatory interneurons, and the role of each cell type is gaining increasing attention. One inhibitory neuron that has been poorly appreciated to date is the superficial stellate cell. Here we review previous studies and describe new results that reveal the surprisingly rich interactions that this tiny interneuron has with its neighbors, interactions which enable it to respond to both multisensory and auditory afferents.

  1. Tratamento superficial dos agregados reciclados de RCD com hidrofugantes.

    OpenAIRE

    Winnie Franco Santos

    2016-01-01

    A proposta busca reduzir a absorção de água dos agregados reciclados de Resíduos de Construção e Demolição (RCD), através do tratamento de sua superfície com hidrofugante, de maneira que estes não aumentem o consumo de água tampouco reduzam a resistência mecânica. Os agregados reciclados de RCD foram caracterizados quanto à granulometria, morfologia, porosidade, ângulo de contato aparente, absorção de água, análise de imagem e rugosidade superficial. Em seguida, os mesmos foram tratados super...

  2. Transient superficial peroneal nerve palsy after anterior cruciate ligament reconstruction

    Directory of Open Access Journals (Sweden)

    Majed Alrowaili

    2016-06-01

    Full Text Available A 19-year-old male subject was diagnosed with medial meniscal, lateral meniscal and anterior cruciate ligament (ACL tear. The symptoms did not subside after 4 months of physical therapy, and he underwent arthroscopic partial medial and lateral meniscectomy and ACL reconstruction. Immediately after the patient woke up from general anesthesia, he started experience loss of sensation in the area of superficial peroneal nerve with inverted dorsiflexion of foot and ankle. Instantly, the bandage and knee brace was removed and a diagnosis of compartment syndrome was ruled out. After eight hours, post-operatively, the patient started receiving physiotherapy. He complained of numbness and tingling in the same area. After 24 h, post-operatively, the patient started to regain dorsiflexion and eversion gradually. Two days after the surgery, the patient exhibited complete recovery of neurological status.

  3. Effect of prophylactic treatments on the superficial roughness of dental tissues and of two esthetic restorative materials Efeito de tratamentos profiláticos na rugosidade superficial de tecidos dentais e de dois materiais restauradores estéticos

    Directory of Open Access Journals (Sweden)

    Daniele Salami

    2003-03-01

    -pomes e pasta de branco de espanha - sobre a rugosidade superficial de dois materiais restauradores - resina composta e compômero - e de duas superfícies dentais - esmalte e cemento/dentina - através da análise rugosimétrica e de microscopia eletrônica de varredura. A análise estatística dos resultados rugosimétricos mostrou que a profilaxia com pedra-pomes sobre o esmalte produziu uma superfície estatisticamente mais lisa do que a natural. Entretanto, comparando-se o efeito dos três tratamentos, a rugosidade superficial produzida pela pedra-pomes foi maior do que a produzida pelos outros tratamentos tanto para esmalte quanto para cemento/dentina, provavelmente por ser mais abrasiva, sendo que para a superfície de resina composta a rugosidade produzida pela pedra-pomes foi maior apenas do que a produzida pelo branco de espanha. Já para o compômero, os três tratamentos se comportaram de maneira semelhante. Podemos afirmar, baseando-nos na análise de rugosimetria e nas imagens das micrografias eletrônicas de varredura das superfícies estudadas, que os tratamentos profiláticos empregados não aumentaram a rugosidade das superfícies tratadas. Comparando-se os efeitos das três técnicas, estes foram diferentes, dependendo das superfícies em que foram empregadas.

  4. Desinfestação superficial, germinação e regeneração in vitro a partir de sementes de calêndula Superficial disinfestation, germination and regeneration in vitro from marigold seeds

    Directory of Open Access Journals (Sweden)

    Caroline Borges Bevilacqua

    2011-05-01

    Full Text Available Os objetivos deste trabalho foram: desenvolver um protocolo de desinfestação superficial de sementes, selecionar uma metodologia de germinação in vitro, avaliar o potencial de regeneração no cultivo in vitro e a influência do tempo de cultivo no tipo de calo formado e na regeneração a partir de calos de calêndula. Para a desinfestação superficial, foram testados diferentes tempos de imersão em solução de hipoclorito de sódio a 2,5%. Na germinação in vitro, foram testados: imersão em ácido sulfúrico absoluto; imersão em ácido clorídrico absoluto; retirada do tegumento e embebição das sementes; e embebição das sementes sem a retirada do tegumento. Para avaliar o potencial de regeneração in vitro, foram testadas diferentes concentrações de 6-benzilaminopurina (BAP e ácido alfa-naftaleno acético (ANA e tempos de cultivo. A imersão em solução de hipoclorito de sódio a 2,5% por 30 minutos aliada à remoção do tegumento promove a germinação in vitro de sementes de calêndula, efetuando uma desinfestação superficial satisfatória. Para a regeneração de partes aéreas e raízes a partir de sementes de calêndula não é necessária a suplementação com fitorreguladores. Na presença de BAP, independentemente da presença ou não de ANA, calos primários induzem à formação de calos esponjosos e friáveis e de calos verdes e rígidos, estes em menor número; na ausência de BAP é induzida a formação de calos pequenos. Calos jovens são mais eficientes em regenerar partes aéreas em calêndula.The aims of this paper were: to develop a protocol of superficial disinfestation of marigold seeds; to select a methodology of germination in vitro of marigold seeds; to evaluate the potential regeneration of in vitro culture of marigold; and the influence of in vitro culture time in the kind of callus formed. The superficial disinfestation was perfomed by different times of immersion in 2.5% sodium hypoclorite

  5. Biosensores: Un Acercamiento a La Resonancia del Plasmon Superficial.

    Directory of Open Access Journals (Sweden)

    Nardo Ramírez Frómeta

    2005-01-01

    Full Text Available Los biosensores, o los sensores basados sobre materiales biológicos, son utilizados en la actualidad en una amplia variedad de disciplinas, incluyendo la industria alimenticia, la medicina, y la ciencia ambiental. Está llegando a ser cada vez más importante para los investigadores y los científicos en éstos y otros campos tener una comprensión de los diversos tipos de biosensores que puedan ser utilizados, los principios detrás de ellos, así como sus ventajas y limitaciones. El énfasis especial se ha dedicado a los biosensores de resonancia del plasmon superficial (SPR. El biosensor óptico basado en la técnica SPR ha ganado atención debido a su velocidad de detección, alta especificidad, alta sensibilidad y posibilidad de análisis en tiempo real. El dispositivo SPR detecta cambios mínimos en el índice de refracción de la superficie de detección y de su vecindad inmediata. Esta detección altamente sensible se basa en una excitación colectiva de los electrones (los plasmons superficiales en una película metálica sobre un substrato (Ej. cristal, conduciendo a la absorción total de la luz en un ángulo particular de incidencia el cual es dependiente de los índices de refracción de cualquiera de los lados de la película metálica.

  6. Resina acrílica: relação entre tratamento superficial e retenção de placa bacteriana

    OpenAIRE

    Rego, Marina R. M.; Kitahara, Flávia M. F.; SANTIAGO,Luiz Carlos

    2010-01-01

    Este estudo avaliou a influência de técnicas de tratamento superficial da resina acrílica na adesão de placa bacteriana utilizando microbiota encontrado na cavidade bucal. Foram confeccionados noventa corpos de prova cilíndricos em resina acrílica autopolimerizável e divididos em nove grupos, para utilização de várias técnicas de tratamento superfi¬cial usualmente utilizadas nesse material. Os corpos-de-prova fora...

  7. Análisis superficial de pavimentos flexibles para el mantenimiento de Vías en la Región de Puno

    OpenAIRE

    Humpiri PinedaA, Katia

    2015-01-01

    El presente estudio define un diagnóstico detallado de los daños sufridos por varios proyectos de pavimentos flexibles en la región de Puno, fue necesario realizar una inspección minuciosa de las vías a evaluar, en la que se evidencia deterioros en la superficie de rodadura de nivel de severidad baja, media y alta en algunos casos, lo que justifico elaborar la identificación, clasificación y monitoreo de las fallas superficiales encontradas. La mayoría de las carreteras ma...

  8. Trifurcation of superficial brachial artery: a rare case with its clinico-embryological implications.

    Science.gov (United States)

    Gupta, N; Anshu, A; Dada, R

    2014-01-01

    Literatures on vasculature of upper limbs are crammed with reports of distinctly deviant version of normally prevalent vessels having modified origins, altered branching and odd courses. A unique anatomical variation in vascular pattern was observed during routine dissection of right upper limb in gross anatomy laboratory, AIIMS, New Delhi, India. The brachial artery was placed superficial to median nerve in the arm and therefore it was called superficial brachial artery. In the cubital fossa, 2.8 cm distal to intercondylar line of elbow joint, this superficial brachial artery terminated by trifurcation into radial, common interosseous and ulnar branches. Strikingly the ulnar branch, after its origin ran superficially over the median nerve and epitrochlear superficial flexor group of muscles of forearm in succession for the initial third of its course in the forearm, consequently it was addressed as superficial ulnar artery. The existence of superficial brachial artery in place of normal brachial artery, its termination by trifurcation into radial, common interosseous and superficial ulnar arteries with remarkably different courses, leads to confusing disposition of structures in the arm, cubital fossa and in the forearm and collectively makes this myriad of anatomical variations even rarer. The clinico-embryological revelations for combination of these unconventional observations, apprises and guides the specialized medical personnel attempting blind and invasive procedures in brachium and ante-brachium. This case report depicts the anatomical perspective and clinical implications on confronting a rare variant vasculature architecture pattern of upper limb.

  9. Chronic exertional compartment syndrome of the superficial posterior compartment: Soleus syndrome.

    Science.gov (United States)

    Gross, Christopher E; Parekh, Bela J; Adams, Samuel B; Parekh, Selene G

    2015-01-01

    Chronic exertional compartment syndrome (CECS) represents the second most-common cause of exertional leg pain with incidence of 27-33%. CECS of the superficial posterior compartment, or soleus syndrome, is rare and has only been discussed briefly in the literature. We discuss the management of two patients with bilateral soleus syndrome or CECS of the superficial posterior compartment.

  10. Estudio del estado físico-mecánico de superficies tratadas por deformación plástica superficial. // Study of the mechanical and physical behavior of surfaces treated by superficial plastic deformation.

    Directory of Open Access Journals (Sweden)

    O. Boada Carrazana

    2003-05-01

    Full Text Available El presente trabajo aborda lo referente al estado del arte de la modelación y el comportamiento de las superficies tratadapor deformación plástica superficial (DPS. Se hace una breve descripción de la modelación elástica y plástica, de la teoríade la plasticidad y de las dislocaciones y se dan algunos resultados sobre la modelación del rodilado usando las técnicasde simulación y modelación, como el método de los elementos finitos, a partir del cual se obtienen los modelosmatemáticos para calcular las tensiones y deformaciones máximas.Palabras claves: deformación plástica superficial, rodilado, bruñido por rodillo, elementos finitos,modelación.____________________________________________________________________________Abstract.This paper deals with the state of the art of modelation and the behaviour of surfaces treated by superficial plasticdeformation. It is given a brief description of the elastic and plastic modelation, theory of plasticity and dislocations, andshowed some results about modelation of roller burnishing using simulation techniques like finite elements method toobtain the mathematics models in order to calculate the maximum stresses and strains.Key words: Superficial plastic deformation, roller burnishing, finite elements method, modelation.

  11. Problemas da sociologia da arte

    OpenAIRE

    Bastide, Roger

    2006-01-01

    A partir de um balanço das realizações consideradas pelo autor como as mais relevantes no campo da sociologia da arte até o final dos anos de 1940, o texto propõe novos rumos para a disciplina, considerando o modo como a arte é socialmente produzida como linguagem e valor.

  12. High-lateral-tension abdominoplasty with superficial fascial system suspension.

    Science.gov (United States)

    Lockwood, T

    1995-09-01

    Modern abdominoplasty techniques were developed in the 1960s. The advent of liposuction has reduced the need for classic abdominoplasty and allowed more aesthetic sculpting of the entire trunk. However, the combination of significant truncal liposuction and classic abdominoplasty is not recommended due to the increased risk of complications. Although the surgical principles of classic abdominoplasty certainly have stood the test of time, they are based on two theoretical assumptions that may be proved to be inaccurate. The first assumption is that wide direct undermining to costal margins is essential for abdominal flap advancement. In fact, discontinuous undermining allows effective loosening of the abdominal flap while preserving vascular perforators. The second inaccurate assumption is that with aging and weight fluctuations (including pregnancy), abdominal skin relaxation occurs primarily in the vertical direction from the xiphoid to the pubis. This is true in the lower abdomen, but in most patients a strong superficial fascial system adherence to the linea alba in the epigastrium limits vertical descent. Epigastric laxity frequently results from a progressive horizontal loosening due to relaxation of the tissue along the lateral trunk. Experience with the lower-body lift procedure has shown that significant lateral truncal skin resection results in epigastric tightening. In these patients, the ideal abdominoplasty pattern would resect as much or more laterally than centrally, leading to more natural abdominal contours. Fifty patients who underwent high-lateral-tension abdominoplasty with and without significant truncal liposuction and other aesthetic procedures were followed for 4 to 16 months. The primary indication for surgery was moderate to severe laxity of abdominal skin and muscle with or without truncal fat deposits. Complication rates were equal to or less than those of historical controls and did not increase with significant adjunctive liposuction

  13. Stimulation of Superficial Zone Protein/Lubricin/PRG4 by Transforming Growth Factor-β in Superficial Zone Articular Chondrocytes and Modulation by Glycosaminoglycans.

    Science.gov (United States)

    Cuellar, Araceli; Reddi, A Hari

    2015-07-01

    Superficial zone protein (SZP), also known as lubricin and proteoglycan 4 (PRG4), plays an important role in the boundary lubrication of articular cartilage and is regulated by transforming growth factor (TGF)-β. Here, we evaluate the role of cell surface glycosaminoglycans (GAGs) during TGF-β1 stimulation of SZP/lubricin/PRG4 in superficial zone articular chondrocytes. We utilized primary monolayer superficial zone articular chondrocyte cultures and treated them with various concentrations of TGF-β1, in the presence or absence of heparan sulfate (HS), heparin, and chondroitin sulfate (CS). The cell surface GAGs were removed by pretreatment with either heparinase I or chondroitinase-ABC before TGF-β1 stimulation. Accumulation of SZP/lubricin/PRG4 in the culture medium in response to stimulation with TGF-β1 and various exogenous GAGs was demonstrated by immunoblotting and quantitated by enzyme-linked immunosorbent assay. We show that TGF-β1 and exogenous HS enhanced SZP accumulation of superficial zone chondrocytes in the presence of surface GAGs. At the dose of 1 ng/mL of TGF-β1, the presence of exogenous heparin inhibited SZP accumulation whereas the presence of exogenous CS stimulated SZP accumulation in the culture medium. Enzymatic depletion of GAGs on the surface of superficial zone chondrocytes enhanced the ability of TGF-β1 to stimulate SZP accumulation in the presence of both exogenous heparin and CS. Collectively, these results suggest that GAGs at the surface of superficial zone articular chondrocytes influence the response to TGF-β1 and exogenous GAGs to stimulate SZP accumulation. Cell surface GAGs modulate superficial zone chondrocytes' response to TGF-β1 and exogenous HS.

  14. Wear and superficial roughness of glass ionomer cements used as sealants, after simulated toothbrushing Desgaste e rugosidade superficial de cimentos de ionômero de vidro utilizados como selantes, após escovação simulada

    Directory of Open Access Journals (Sweden)

    Daniela Rios

    2002-12-01

    Full Text Available The purpose of this study was to evaluate, in vitro, the properties (wear and roughness of glass ionomer cements that could influence their indication as pit and fissure sealants. The utilized materials were Fuji Plus, Ketac-Molar and Vitremer (in two different proportions: 1:1 and ¼:1. The resin-based sealant Delton was used as control. By means of an electronic balance (precision of 10-4 g, wear was measured in function of weight loss after simulated toothbrushing. Superficial roughness was determined by means of a surface roughness-measuring apparatus. The results revealed that diluted Vitremer and Fuji Plus were less resistant to toothbrushing abrasion and had the greatest increase in superficial roughness.Although in clinical situations luting or diluted ionomer cements are often utilized as alternatives to resin-based sealants, the resultsof this study revealed that the properties of those cements are worse than those of restorative ionomers, whichpresented results similar to those of the evaluated resin sealant.O presente estudo foi conduzido in vitro com o intuito de constatar as propriedades (desgaste e rugosidade dos CIV, as quais influenciam na sua indicação como material selador de fossas e fissuras. Os materiais empregados foram Fuji Plus, Ketac-Molar e Vitremer (duas proporções: 1:1 e ¼:1. O selante Delton foi controle. A determinação do desgaste foi obtida através da quantidade de massa perdida após a escovação e a rugosidade através da análise quantitativa da superfície. Os resultados mostraram que o Vitremer diluído e o Fuji Plus apresentaram maior grau de desgaste e maior aumento de rugosidade. Apesar de clinicamente se encontrar um maior uso dos ionômeros de vidro cimentantes ou diluídos como forma alternativa para material selador; este trabalho permitiu concluir que estes possuem propriedades bastante inferiores quando comparados aos ionômeros restauradores que, por sua vez, possuem resultados semelhantes

  15. Saphenous Vein Sparing Superficial Inguinal Dissection in Lower Extremity Melanoma

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    Muhammed Beşir Öztürk

    2014-01-01

    Full Text Available Aim. The classic inguinal lymph node dissection is the main step for the regional control of the lower extremity melanoma, but this surgical procedure is associated with significant postoperative morbidity. The permanent lymphedema is the most devastating long-term complication leading to a significant decrease in the patient’s quality of life. In this study we present our experience with modified, saphenous vein sparing, inguinal lymph node dissections for patients with melanoma of the lower extremity. Methods. Twenty one patients (10 women, 11 men who underwent saphenous vein sparing superficial inguinal lymph node dissection for the melanoma of lower extremity were included in this study. The effects of saphenous vein sparing on postoperative complications were evaluated. Results. We have observed the decreased rate of long-term lymphedema in patients undergoing inguinal lymphadenectomy for the lower extremity melanoma. Conclusion. The inguinal lymphadenectomy with saphenous vein preservation in lower extremity melanoma patients seems to be an oncologically safe procedure and it may offer reduced long-term morbidity.

  16. MOLECULAR GENETIC MARKERS AS PREDICTORS OF SUPERFICIAL BLADDER CANCER

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    A. Yu. Babayan

    2009-01-01

    Full Text Available A system of clinical and morphological criteria is currently used to determine the pattern of superficial bladder cancer (SBC. However, this system does not completely reflect the clinical potential of SBC and needs additional markers. The purpose of this study was to search for and evaluate molecular genetic disorders as additional markers of the course of SBC. The diagnostic panel included the deletion of the loci 3р14, 9р21, 9q34, 17р13 (ТР53, mutations of exon 7 of the FGFR3 gene, and hypermethylation of the promoter regions of the RASSF1, RARB, p16, p14, CDH1 genes. The study was made on 108 matched samples (tumor/peripheral blood obtained from patients with SBC. The deletions of the loci 3р14, 9р21 and anomalous methylation of the RARb and p16 genes are markers of the worse course of SBC while FGFR3 gene mutation is a marker of better prognosis. In the context of estimation of the relapsing potential of a primary tumor, the 9p21 locus deletion is a marker associated with recurrence within the first year after malignancy resection. The group of molecular genetic markers determined by the authors for poor prognosis in combination with classical clinical and morphological criteria will specify the pattern of the course of the disease and its prognosis.

  17. Superficial topography of wound: a determinant of underlying biological events?

    Science.gov (United States)

    Farahani, Ramin Mostofi Zadeh; Aminabadi, Naser Asl; Kloth, Luther C

    2008-01-01

    Three-dimensional configuration of wounds varies considerably according to the etiology. Wounding of skin is proceeded by release of dermal pretension. Subsequent disruption of physical equilibrium with resulting development of force vectors alters the primary shape of wound to maintain a new dynamic physical equilibrium. This leads to the development of stress-relaxation and stress-concentration areas throughout the wound milieu. Mechanical strain produces piezoelectric current which is maximal in stress-relaxation regions due to lower tissue stiffness and higher mobility. Early surge in the tissue level of TGF-beta would be exaggerated through synergistic interaction with piezoelectric current in stress-relaxation areas. Subsequently, fibroblasts migrate to these areas due to galvanotaxis. The gradual dissipation of tissue tension, due to irreversible loss of viscous strain, reduces the synergistic action of TGF-beta and piezoelectricity. However, a similar pattern of activity of TGF-beta due to the polarized migration of fibroblasts, which are the main source of TGF-beta during secondary surge, may be continued. It seems that a biological-mechanical continuum exists for wounds so that even the superficial topography of wounds may affect the underlying biological activity and final healing outcome during healing of dermal wounds.

  18. Pentacam-based phototherapeutic keratectomy outcome in superficial corneal opacities

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    Rashad MA

    2012-06-01

    Full Text Available Mohammad A RashadOphthalmology Department, Faculty of Medicine, Ain Shams University, Cairo, EgyptPurpose: This study aimed to evaluate the effectiveness of phototherapeutic keratectomy (PTK as an alternative treatment to keratoplasty using the Pentacam to assess depth of dense opacities.Methodology: PTK was performed in eleven eyes of ten patients with superficial corneal opacities after assessment by Scheimpflug images of the Pentacam for central corneal thickness (CCT and opacity level and depth.Results: The best-corrected spectacle visual acuity (BCSVA significantly improved. The preoperative mean logMAR was 0.85 (0.14 decimal equivalent, 6/42 Snellen's equivalent, and the final postoperative mean logMAR was 0.58 (0.26 decimal equivalent, 6/23 Snellen's equivalent. The mean preoperative CCT was 465.64 ± 71.94 µm. The mean programmed ablation depth was 142.09 ± 47.58 µm. The programmed ablation depth was correlated to mean logMAR early (1 month and not correlated later (6 months. None of the eyes lost lines of BCSVA or developed serious complications, such as keratectasia, delayed epithelialization, or corneal melting.Conclusion: Corneal scars extending beyond the anterior one-fifth of the cornea can be treated safely and effectively by PTK due to the smoothing effect, with reduction of the cylinder rather than complete opacity removal. This can decrease the need for keratoplasty.Keywords: phototherapeutic keratectomy, PTK, corneal opacities, Pentacam

  19. Superficial and orthovoltage x-ray beam dosimetry.

    Science.gov (United States)

    Podgorsak, E B; Gosselin, M; Evans, M D

    1998-07-01

    Output of superficial and orthovoltage x-ray units may be measured with cylindrical or end-window parallel-plate ionization chambers. The air-kerma calibration factors for these chambers are usually determined free in air, and the x-ray machine output is stated as the air-kerma rate free in air, which, when multiplied with the appropriate backscatter factor, gives the air-kerma rate on the surface of a phantom or patient. For end-window chambers, especially when they are used for measurements of small fields or low x-ray energies, the air-kerma calibration factors may also be determined with the chamber embedded in a tissue-equivalent phantom. This results in field size dependent air-kerma in-air calibration factors but obviates the requirement for knowledge of back-scatter factors when determining the air-kerma rate on the surface of a phantom. Since there still is considerable uncertainty in tabulated backscatter factors as a function of field size and x-ray beam energy, the output measurement technique which determines the air-kerma rate on phantom surface with a phantom-embedded end-window ionization chamber offers a clear advantage over the in-air calibration method.

  20. Superficial siderosis is a warning sign for future intracranial hemorrhage.

    Science.gov (United States)

    Linn, Jennifer; Wollenweber, Frank A; Lummel, Nina; Bochmann, Katja; Pfefferkorn, Thomas; Gschwendtner, Andreas; Bruckmann, Hartmut; Dichgans, Martin; Opherk, Christian

    2013-01-01

    Supratentorial superficial siderosis (SS) is a frequent imaging marker of cerebral amyloid angiopathy (CAA). It is most probably caused by focal subarachnoid hemorrhages (fSAHs). Based on single-case observations, it has been proposed that such fSAHs might be a predisposing factor for future intracranial hemorrhage. Here we tested the hypothesis if a SS as a residue of fSAHs must be regarded as a warning sign for future intracranial hemorrhage. Fifty-one consecutive patients with SS and no apparent cause other than possible or probable CAA were identified through a database search and followed-up for a median interval of 35.3 months (range 6-120 months). Main outcome measures were rate and location of new intracranial hemorrhages. Twenty-four patients (47.1 %) had experienced any new intracranial hemorrhage, 18 patients (35.3 %) had an intracerebral hemorrhage (ICH), and in 13 of them (25.5 %), the hemorrhage was located at the site of pre-existing siderosis. Six patients (11.7 %) had developed a new subarachnoid hemorrhage (SAH), four of them at the site of siderosis. Patients with SS are at substantial risk for subsequent intracranial hemorrhage. SS can be considered a warning sign of future ICH or SAH, which frequently occur adjacent to pre-existing SS. Prospective studies are needed to confirm these findings.

  1. Fine-needle aspiration cytology in children with superficial lymphadenopathy

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    F. De Corti

    2014-04-01

    Full Text Available Introduction: In pediatric population Fine-Needle Aspiration Citology (FNAC is slowly gaining acceptance in clinical management of Superficial Lymphadenopathy (SL. Our experience adds some data about the usefulness of this technique in diagnosing the cause of a SL and therefore guiding further treatment. Patients and Methods: 238 FNAC were performed in 217 patients with SL, observed at our Institution from 2002 to 2006. The neck was the most frequent localization. The results were available within few hours. In cases of granulomatous findings, the samples were processed for microbiological and PCR test, in order to identify Mycobacteria. Results: 174 were reactive lesions, 38 granulomatous lymphadenopathies, 24 malignant lesions, 2 specimens inadequate for diagnosis. Among the 174 reactive SL, 22 required an incisional biopsy after 1 month follow-up. Among the granulomatous lymphadenopathies, 13 children with Cat-Scratch Disease recovered, 25 with Mycobacteria infection underwent surgical excision. For 24 malignant lesions, the diagnosis was confirmed by further biopsy. Two false negative and no false positive were detected (sensitivity 92%, specificity 100%. No complications were encountered. Conclusions: In our experience FNAC, performed by experienced cytopathologist, has revealed to be a fast, safe, non invasive and inexpensive method to achieve diagnosis in persistent SL. The use of FNAC gave us the possibility to select patients for further investigation and/or surgical treatment. Incisional biopsy remains necessary to confirm the diagnosis in case of malignancy or doubtful lesions.

  2. Immunological studies in chronic atrophic gastritis and chronic (superficial) gastritis.

    Science.gov (United States)

    Fung, W P; Rigby, R J; Trenchev, P; Matz, L R

    1978-01-01

    Detection of autoantibodies, HLA typing and immunofluorescence studies on gastric biopsies were carried out in subjects with histologically proven chronic atrophic gastritis (CAG) and chronic superficial gastritis (CG). All were seronegative for parietal cell antibody and did not have pernicious anemia. Except for positive antismooth muscle and antimitochrondrial antibodies in one patient with CAG, autoantibodies (antinuclear, smooth muscle, mitochrondrial, parietal cell) were absent in patients with CAG and CG. Immunofluorescence studies showed that Ig-G and IgA were presented in the lamina propria of all cases with CAG or CG and of subjects with normal gastric histology. Ig-M was seen less often, in about half the cases. Complement C3 was an uncommon finding, being positive in only one case with CAG and one case with CG and in none of the cases with normal gastric histology. Fibrinogen was more commonly seen in patients with CG (5/5 cases) than in those with CAG (3/11 cases). Fibrinogen was found in one case with normal gastric histology. The most consistent fluorescence was obtained with antiparietal cell antiserum. All subjects with CAG showed negative or weak staining only. In contrast, subjects with CG and normal gastric histology had strong specific fluorescence. An increased frequency of HLA-A1 plus HLA-B8 was found in subjects with CAG (20.7% in controls; 40% in CAG).

  3. Ultrasonic quantitation of superficial degradation of articular cartilage.

    Science.gov (United States)

    Saarakkala, Simo; Töyräs, Juha; Hirvonen, Jani; Laasanen, Mikko S; Lappalainen, Reijo; Jurvelin, Jukka S

    2004-06-01

    Ultrasound (US) has been suggested as a means for the quantitative detection of early osteoarthrotic changes in articular cartilage. In this study, the ability of quantitative US 2-D imaging (20 MHz) to reveal superficial changes in bovine articular cartilage after mechanical or enzymatic degradation was investigated in vitro. Mechanical degradation was induced by grinding samples against an emery paper with the grain size of 250 microm, 106 microm, 45 microm or 23 microm. For enzymatic degradation, samples were digested with collagenase, trypsin or chondroitinase ABC. Variations of the US reflection coefficient induced by the degradation were investigated. Furthermore, two novel parameters, the US roughness index (URI) and the spatial variation of the US reflection coefficient (SVR), were established to quantitate the integrity of the cartilage surface. Statistically significant decreases (p < 0.05) in US reflection coefficient were observed after mechanical degradations or enzymatic digestion with collagenase. Increases (p < 0.05) in URI were also revealed after these treatments. We conclude that quantitative US imaging may be used to detect collagen disruption and increased roughness in the articular surface. These structural damages are typical of early osteoarthrosis.

  4. Autoregulation of superficial nephron function in the alloperfused dog kidney.

    Science.gov (United States)

    Heller, J; Horácek, V

    1979-10-01

    Isolated dog kidneys were each pump-perfused by another dog during 4 experimental periods at perfusion pressures (PP) of 21, 17, 13, and 8 kPa, resp. (i.e. 160, 130, 94, and 60 mm Hg). At the 3 highest PP values, the total kidney renal blood flow (RBF) and glomerular filtration rate (GFR) were perfectly autoregulated while at the lowest value both values were significantly lowered. No significant difference was observed between the single nephron GFR (SNGFR) of periods 1 and 2; in period 3 (PP = 13 kPa) a lower value was observed (P less than 0.05). Free flow pressure in proximal convolution (FFP), stop-flow pressure (SFP), and peritubular capillary pressure (PCP) were not different in period 2 than in period 1, but were significantly lower in period 3 (P = 0.02--0.05). Effective filtration pressure (EFP) was the highest in period 1, decreasing significantly with decreasing PP. Filtration pressure equilibrium was observed in period 4 at PP 8 kPa. Total blood flow resistance (RT) fell with decreasing PP, the drop being due to a steep decline in afferent resistance (RA). Efferent resistance (RE) increased as PP decreased. Ultrafiltration coefficient (Kf) rose with declining PP both within and outside the autoregulatory range. The results indicate that the lower limit of autoregulation is higher in superficial nephrons than in the whole kidney.

  5. The superficial peroneal nerve at the foot. Organisation, surgical applications.

    Science.gov (United States)

    Canovas, F; Bonnel, F; Kouloumdjian, P

    1996-01-01

    The authors report the results of the dissection of the superficial peroneal nerves of 30 adult cadavers, from its emergence through the deep sural fascia up to its terminal branches. Its emergence was located, on average, 11 cm from the lower end of the lateral malleolus (min: 9 cm, max: 11.5 cm). The division of the nerve into the medial dorsal cutaneous n. and the intermediate dorsal cutaneous n. was found in 29 cases after its emergence from the sural fascia and before its passage on the proximal edge of the extensor retinaculum. The distance between the medial dorsal cutaneous n. and the medial malleolus was more than 2 cm. This nerve divided into three branches at a level varying from 5 to 20 cm in relation to the first interdigital space (average 9 cm). The intermediate dorsal cutaneous n. was found in 27 cases. It divided into two branches at a variable distance from the fourth interdigital space (4 to 6 cm). According to Kosinski's classification, we found 24 cases of type I (80%), three cases of type II (10%) and three cases of type IV (10%). The authors stress the numerous topographic variations and the multiple anatomical types.

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

    Science.gov (United States)

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

    2016-08-01

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

  7. Experimental Study on Mine Spoils During Superficial Geochemical Processes

    Institute of Scientific and Technical Information of China (English)

    王一先; 白正华

    2002-01-01

    Based on the mineral and chemical compositions of spoils taken from the Shilu Cu-Mo deposit and Hetai gold deposit ,the leaching and batch experiments were made on spoils taken from these two deposits using the leaching column designed by the authors.The experimental results showed that it is not always true that the imine drainage is acidic.Its acidity depends on acid-buffering capacity of gangue,host rock and its alteration mineral assemblage.The composi-tion of the drainage water is related with the interaction between superficial or underground water and solid materials in the spoils,including minerals,hydroxides and amorphous substances.The leaching extent of the element is related with its occurrence form in the deposit.The prefer-ential flow results in leaching-out of heavy metals in large amounts.So it is important to prevent the generating of preferential flow in the system.The results will provide very important grounds for the comprehensive management of land and ecological rehabilitation of the mine site.

  8. Experimental Study on Mine Spoils During Superficial Geochemistry Processes

    Institute of Scientific and Technical Information of China (English)

    王一先; 白正华

    2002-01-01

    Based on the mineral and chemical compositions of spoils taken from the Shilu Cu-Mo deposit and Hetai gold deposit, the leaching and batch experiments were made on spoils taken from these two deposits using the leaching column designed by the authors. The experimental results showed that it is not always true that the mine drainage is acidic. Its acidity depends on acid-buffering capacity of gangue, host rock and its alteration mineral assemblage. The composition of the drainage water is related with the interaction between superficial or underground water and solid materials in the spoils, including minerals, hydroxides and amorphous substances. The leaching extent of the element is related with its occurrence form in the deposit. The preferential flow results in leaching-out of heavy metals in large amounts. So it is important to prevent the generating of preferential flow in the system. The results will provide very important grounds for the comprehensive management of land and ecological rehabilitation of the mine site.

  9. Triterpenes for Well-Balanced Scar Formation in Superficial Wounds

    Directory of Open Access Journals (Sweden)

    Stefan Kindler

    2016-08-01

    Full Text Available Triterpenes are demonstrably effective for accelerating re-epithelialisation of wounds and known to improve scar formation for superficial lesions. Among the variety of triterpenes, betuline is of particular medical interest. Topical betuline gel (TBG received drug approval in 2016 from the European Commission as the first topical therapeutic agent with the proven clinical benefit of accelerating wound healing. Two self-conducted randomized intra-individual comparison clinical studies with a total of 220 patients involved in TBG treatment of skin graft surgical wounds have been screened for data concerning the aesthetic aspect of wound healing. Three months after surgery wound treatment with TBG resulted in about 30% of cases with more discreet scars, and standard of care in about 10%. Patients themselves appreciate the results of TBG after 3 months even more (about 50% compared to standard of care (about 10%. One year after surgery, the superiority of TBG counts for about 25% in comparison with about 10%, and from the patients’ point of view, for 25% compared to 4% under standard of care. In the majority of wound treatment cases, there is no difference visible between TBG treatment and standard of care after 1 year of scar formation. However, in comparison, TBG still offers a better chance for discreet scars and therefore happens to be superior in good care of wounds.

  10. GENETIC RISK MARKERS FOR SUPERFICIAL AND INVASIVE BLADDER CANCER

    Directory of Open Access Journals (Sweden)

    V. N. Pavlov

    2011-01-01

    Full Text Available To reveal possible associations of the polymorphic variants of the cytochrome P450 and enzymes glutathione-S-transferase genes with the risk for bladder cancer (BC, the authors analyzed the frequency of genotypes and alleles at the polymorphic loci of the CYP1A1 (A2454G, GSTM1 (del, and GSTP1 (A313G genes in 208 patients diagnosed as having BC (104 patients with invasive BC and 104 with superficial BC and in 367 patients without identified oncopathology. The *1A*2C (OR = 3.42 and *2C*2С (OR = 6.98 genotypes, *2C (OR = 3.73 allele of the CYP1A1 gene and the GG (OR = 2.53 genotype of the GSTP1 gene were ascertained to be genetic markers for a risk for BC. The presence of the *2C (OR = 1.69 allele of the CYP1A1 gene, the G (OR = 2.40 allele and the AG genotype (OR = 2.40 of the GSTP1 gene was associated with the invasive forms of BC. There were no substantial differences in the distribution of the frequency of genotypes of the GSTM1 gene between the samples of patients and healthy individuals.

  11. Histological and biochemical study of the superficial abdominal fascia and its implication in obesity

    Science.gov (United States)

    Kumar, Pramod; Aithal, Srinivas Kodavoor; Kotian, Sushma R.; Thittamaranahalli, Honnegowda; Bangera, Hemalatha; Prasad, Keerthana; Souza, Anne D.

    2016-01-01

    The advancement of liposculpturing and fascial flaps in reconstructive surgery has renewed interest in the superficial fascia of abdomen. Its histological and biochemical composition may play a vital role in maintaining strength and elasticity of the fascia. Hence, study of abdominal fascia for the elastic, collagen, and hydroxyproline contents is desirable to understand asymmetrical bulges and skin folds and in improving surgical treatment of obesity. Samples of superficial fascia were collected from of upper and lower abdomen from 21 fresh cadavers (15 males and 6 females). Samples were stained using Verhoeff–Van Gieson stain. Digital images of superficial fascia were analyzed using TissueQuant software. The samples were also subjected to hydroxyproline estimation. The superficial fascia was formed by loosely packed collagen fibers mixed with abundant elastic fibers and adipose tissue. Elastic contents and collagen contents of superficial fascia were significantly more in the upper abdomen than that in the lower abdomen in males. Hydroxyproline content of superficial fascia of upper abdomen was significantly more than that of lower abdomen in both males and females. The elastic, collagen and hydroxyproline contents of superficial fascia of upper abdomen were higher compared to the lower abdomen. This may be a reason for asymmetric bulging over abdomen and more sagging fold of skin in the lower abdomen than in the upper abdomen. This study may therefore be helpful in finding new ways to manage obesity and other body contour deformities. PMID:27722011

  12. The specificationof nano-structure superficial layers in some of the pathogen bacteria

    Directory of Open Access Journals (Sweden)

    Shilla Jalalpoor

    2010-11-01

    Full Text Available Background: The superficial layer is a part of the cellular envelop that is seen in bacteria and archaea. This superficial layer is a single layer structure composed of subordinate proteins or glycoproteins. The superficial layer is the outer most cellular structure that is in the exchange and reaction around environment with bacteria. This structure has very diversity in bacteria different types.Materials and Method: The related articles to superficial layer were extracted of these articles: Pubmed, Elsevier Science, and Yahoo, from 1995 to 2010 years. For this purpose keywords were searched including superficial layer, pathogenesis, pathogen bacteria,Results: There is consensus in the case of the superficial layer and about the existence of this superficial structure lead to increased pathogenesis in bacteria, in all of the research articles.Conclusion: S-layers in pathogen bacteria with bacteria protection against bacteriophages and phagocytosis, resistance against low pH, adhesion, stabilisation of the membrane and providing adhesion sites for exoproteins caused pathogenesis, infection resistant and antibiotic resistant in host.The result of this study shows the prevalence of considerable S-layer in pathogen bacteria and this matter identified the bacteria generator importance of this structure in the laboratory

  13. Magnetismo de superficie em sistemas compressiveis de Ising

    OpenAIRE

    Moreira,Antonio Flavio Barbosa

    1991-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina. Centro de Ciencias Fisicas e Matematicas Neste trabaho estudamos o modelo de Ising em uma rede cúbica semi-infinita. Consideramos um modelo magneto-elástico com uma pressão uniaxial, onde os íons vibram somente em uma direção perpendicular aos planos cristalinos. Na aproximação de campo médio determinamos o diagrama de fases para os acoplamentos críticos de superfície em função da pressão, e o perfil da magnetização. Utiliza...

  14. Unexpected diagnosis of superficial neurofibroma in a lesion with imaging features of a vascular malformation

    Energy Technology Data Exchange (ETDEWEB)

    O' Keefe, Patrick; Reid, Janet; Morrison, Stuart [Cleveland Clinic Foundation, Department of Radiology, Cleveland, OH (United States); Vidimos, Allison [Cleveland Clinic Foundation, Department of Dermatology, Cleveland, OH (United States); DiFiore, John [Cleveland Clinic Foundation, Department of Pediatric Surgery, Cleveland, OH (United States)

    2005-12-01

    Plexiform neurofibroma is a pathognomonic, often disabling feature of neurofibromatosis type I. Although the target-like appearance of deep plexiform neurofibroma on T2-weighted MRI has been well-described, a second superficial form of plexiform neurofibroma has differing imaging features. We report a 15-year-old boy who presented with multiple cutaneous lesions exhibiting clinical and imaging characteristics of a venolymphatic malformation. These lesions were histologically proved to represent superficial plexiform neurofibromas. We wish to emphasize the unique MR findings of superficial plexiform neurofibromas; these findings are different from the imaging characteristics of the deep form and can be confused with a low-flow vascular malformation. (orig.)

  15. Clinicopathological, ultrasonographic, and histopathological findings of superficial necrolytic dermatitis with hepatopathy in a cat.

    Science.gov (United States)

    Kimmel, Susan E; Christiansen, Wendy; Byrne, Kevin P

    2003-01-01

    This report describes the antemortem diagnosis and antemortem and postmortem findings of superficial necrolytic dermatitis with hepatopathy (i.e., hepatocutaneous syndrome) in a cat. A 5-year-old Maine coon was evaluated because of a history of pruritic alopecia and liver enzyme elevations. Abdominal ultrasonography revealed a reticular pattern to the hepatic parenchyma. Histopathological findings of the liver were nodular regeneration with bands of vacuolated hepatocytes and bile duct hyperplasia, characteristic of the hepatopathy frequently associated with superficial necrolytic dermatitis. Skin histopathology revealed multifocal parakeratosis, midepidermal spongiosis, and basal cell hyperplasia consistent with superficial necrolytic dermatitis.

  16. Evaluación de la calidad superficial del hormigón autocompactante

    OpenAIRE

    López, Anahí; Tobes, Juan Manuel; Giaccio, Graciela Marta; Zerbino, Raúl

    2008-01-01

    En la actualidad los requerimientos estéticos han dado lugar a mayores exigencias sobre la calidad superficial en hormigón visto. El uso de hormigón autocompactante (HAC) aparece como una alternativa para lograr elementos con mejor terminación superficial. El CIB Report N° 24 presenta un método para clasificar la calidad superficial del hormigón donde se incluyen como parámetros la uniformidad de color, la presencia de burbujas, manchas, marcas y otros tipos de defectos. En este trabajo se pr...

  17. Applied anatomy of the superficial branch of the radial nerve.

    Science.gov (United States)

    Robson, A J; See, M S; Ellis, H

    2008-01-01

    The superficial branch of the radial nerve (SBRN) is highly vulnerable to trauma and iatrogenic injury. This study aimed to map the course of the SBRN in the context of surgical approaches and identify a safe area of incision for de Quervain's tenosynovitis. Twenty-five forearms were dissected. The SBRN emerged from under brachioradialis by a mean of 8.31 cm proximal to the radial styloid (RS), and remained radial to the dorsal tubercle of the radius by a mean of 1.49 cm. The nerve divided into a median of four branches. The first branch arose a mean of 4.92 cm proximal to the RS, traveling 0.49 cm radial to the first compartment of the extensor retinaculum, while the main nerve remained ulnar to it by 0.64 cm. All specimens had branches underlying the traditional transverse incision for de Quervain's release. A 2.5-cm longitudinal incision proximal from the RS avoided the SBRN in 17/25 cases (68%). In 20/25 specimens (80%), the SBRN underlay the cephalic vein. In 18/25 (72%), the radial artery was closely associated with a sensory nerve branch near the level of the RS (SBRN 12/25, lateral cutaneous nerve of the forearm (LCNF) 6/25.) A longitudinal incision in de Quervain's surgery may be preferable. Cannulation of the cephalic vein in the distal third of the forearm is best avoided. The close association between the radial artery and first branch of the SBRN or the LCNF may explain the pain often experienced during arterial puncture. Particular care should be taken during radial artery harvest to avoid nerve injury.

  18. Analyses of superficial and depth doses in intraoral radiology

    Energy Technology Data Exchange (ETDEWEB)

    Silva Santos de Oliveira, C.; Morais, R.P. de; Nascimento Souza, D. do [Universidade Federal de Sergipe - CCET - Dept. de Fisica, Sao Cristovao, SE (Brazil)

    2006-07-01

    In this work dosimetric analysis using thermoluminescence technique to study the beams characteristics of x-rays employed in dental radiology has been carried out. The obtained results with CaSO{sub 4}:Dy thermoluminescent dosimeters (TLD) were compared to the doses obtained with parallel-plates ionization chamber. Dosimetric evaluations were also done using radiographic films of large dimensions. The x-rays equipments analyzed were installed in the radiological services of Odontology Department of Sergipe Federal University (U.F.S.). Depending on the anatomical region to be examined the proper exposure time was select, for a fix voltage of 70 kV. The results with TLD and ionization chamber have been determined to female and male individuals. The intraoral regions analysed were the peri apical of the incisors, molar and pre-molar teeth and the occlusive region. These regions were simulated using acrylic plates absorbers installed on the film packet holder. The evaluation of the depth doses in the intraoral tissue was obtained using different acrylic plate thickness. The air kerma values have been evaluated with the ionization chamber located in the dental cone exit of the x-rays equipments. The integrated areas of the thermoluminescent glow curves showed coherent values when compared to the ones obtained with the ionization chamber and both methods presented a linear dependence with the exposition time. The analyses with films have allowed the evaluation of the beam scattering in the simulator apparatus. The studies had proven that the analysis of superficial dose and in depth used in dental radiology can be carried with thermoluminescent dosimeters. (authors)

  19. Superficial white matter: effects of age, sex, and hemisphere.

    Science.gov (United States)

    Phillips, Owen R; Clark, Kristi A; Luders, Eileen; Azhir, Ramin; Joshi, Shantanu H; Woods, Roger P; Mazziotta, John C; Toga, Arthur W; Narr, Katherine L

    2013-01-01

    Structural and diffusion imaging studies demonstrate effects of age, sex, and asymmetry in many brain structures. However, few studies have addressed how individual differences might influence the structural integrity of the superficial white matter (SWM), comprised of short-range association (U-fibers), and intracortical axons. This study thus applied a sophisticated computational analysis approach to structural and diffusion imaging data obtained from healthy individuals selected from the International Consortium for Brain Mapping (ICBM) database across a wide adult age range (n=65, age: 18-74 years, all Caucasian). Fractional anisotropy (FA), radial diffusivity (RD), and axial diffusivity (AD) were sampled and compared at thousands of spatially matched SWM locations and within regions-of-interest to examine global and local variations in SWM integrity across age, sex, and hemisphere. Results showed age-related reductions in FA that were more pronounced in the frontal SWM than in the posterior and ventral brain regions, whereas increases in RD and AD were observed across large areas of the SWM. FA was significantly greater in left temporoparietal regions in men and in the posterior callosum in women. Prominent leftward FA and rightward AD and RD asymmetries were observed in the temporal, parietal, and frontal regions. Results extend previous findings restricted to the deep white matter pathways to demonstrate regional changes in the SWM microstructure relating to processes of demyelination and/or to the number, coherence, or integrity of axons with increasing age. SWM fiber organization/coherence appears greater in the left hemisphere regions spanning language and other networks, while more localized sex effects could possibly reflect sex-specific advantages in information strategies.

  20. Microwave array applicator for radiometry-controlled superficial hyperthermia

    Science.gov (United States)

    Stauffer, Paul R.; Jacobsen, Svein; Neuman, Daniel

    2001-06-01

    Hyperthermia therapy has been shown clinically effective for a variety of skin diseases but current heating equipment is inadequate for most patients. This effort describes the design and performance of a flexible microstrip array applicator intended for heating large regions of tissue over contoured anatomy while at the same time monitoring temperature of the underlying tissue by non-invasive radiometric sensing of blackbody radiation from the heated volume. For this dual purpose applicator, an array of broadband Archimedean spiral receive antennas is integrated into an array of Dual Concentric Conductor heating apertures. Applicator heating uniformity is assessed with electric field scans in homogenous muscle phantoms and with measured temperature distributions in clinical treatments of chestwall recurrence of breast carcinoma. The data demonstrate precisely controlled heating out to the perimeter of large (40 x 13 cm2) multiaperture conformal array applicators. Capabilities of the radiometry system are assessed by correlation of brightness temperatures measured in phantom loads of known temperature distribution as seen through an intervening 5 mm thick water bolus at constant 40°C. The radiometer demonstrates excellent sensitivity and an accuracy of +0.1-0.45°C for temperature measurements up to 5 cm deep in phantom when using a one dimensional weighting function analysis and up to 6 independent 500 MHz bandwidths within the 1-4 GHz range. The data clearly indicate that both heating and radiometric thermometry are possible using the same thin and flexible printed circuit board microstrip array applicator. Once development is complete, this dual mode conformal array applicator with multiplexed radiometric display system should provide significantly improved uniformity and ease of heating large area superficial tissue disease.

  1. Evolução da Atmosfera nos Planetas Interiores

    OpenAIRE

    Monteiro, Graça Maria Viana

    2001-01-01

    Dissertação de Mestrado em Geologia apresentada à Faculdade de Ciências da Universidade do Porto Os planetas do nosso Sistema Solar são muito diferentes uns dos outros no seu aspecto exterior, tamanho e temperatura superficial. Mas, sendo a planetologia uma ciência em expansão, muitas das aparentes diferenças revelam-se, como, caminhos evolutivos divergentes. Neste trabalho é explorada essa evolução no que respeita às atmosferas dos planetas interiores, em especial de Vénus, da Terra e de ...

  2. ESTUDIO ANATÓMICO DE LA RAMA SUPERFICIAL DEL NERVIO RADIAL. IMPLICACIONES QUIRÚRGICAS Superficial branch of radial nerve: an anatomical study and its surgical implications

    OpenAIRE

    Enrique Vergara-Amador; José Luis Nieto

    2010-01-01

    Antecedentes. Conocer la anatomía de la rama superficial del nervio radial, es indispensable para la adecuada práctica de cirugías que involucran la mano y la muñeca. Objetivo. Determinar las relaciones del nervio radial y sus ramas con el tubérculo de Lister, la apófisis estiloides del radio y la distribución en el dorso de la mano. Material y métodos. Se disecaron 25 piezas de cadáveres frescos. Se identificó la rama superficial del nervio radial y se midió la distancia entre la salida del ...

  3. Valoración de la superficie del dializador en la hemodiafiltración on-line. Elección objetiva de la superficie del dializador

    Directory of Open Access Journals (Sweden)

    Francisco Maduell

    2015-05-01

    Conclusión: El incremento del 40% y el 80% de la superficie conlleva un aumento del volumen convectivo de un 6 y un 16% respectivamente, aunque se evidenció una reducción en su máximo rendimiento, mostrando mínimas diferencias tanto en el volumen convectivo como en la capacidad depurativa cuando el CUF era superior a 45 ml/h/mmHg. Es recomendable optimizar el rendimiento de los dializadores a la mínima superficie posible adecuando la prescripción de tratamiento.

  4. Efectos del entrenamiento en superficies inestables sobre el equilibrio y funcionalidad en adultos mayores

    National Research Council Canada - National Science Library

    Juan C. López S; Elkin F. Arango V

    2015-01-01

    Objetivo: determinar los efectos de un programa de ocho semanas de entrenamiento en superficies inestables con y sin trabajo de fuerza, sobre el equilibrio y la capacidad funcional en adultos mayores de 60...

  5. DETERMINATION OF SUPERFICIAL ABSORBED DOSE FROM EXTERNAL EXPOSURE OF WEAKLY PENETRATING RADIATIONS

    Institute of Scientific and Technical Information of China (English)

    陈丽姝

    1994-01-01

    The methods of determining the superficial absorbed dose distributions in a water phantom by means of the experiments and available theories have been reported.The distributions of beta dose were measured by an extrapolation ionization chamber at definite depthes corresponding to some superficial organs and tissues such as the radiosensitive layer of the skin,cornea,sclera,anterior chamber and lens of eyeball.The ratios among superficial absorbed dose D(0.07) and average absorbed doses at the depthes 1,2,3,4,5 and 6mm are also obtained with Cross's methods.They can be used for confining the deterministic effects of some superficial tissues and organs such as the skin and the components of eyeball for weakly penetrating radiations.

  6. Effects of immobilization on thickness of superficial zone of articular cartilage of patella in rats

    Directory of Open Access Journals (Sweden)

    Khadija Iqbal

    2012-01-01

    Conclusion: Each segment of superficial zone behaves differentially on immobilization and remobilization. Perhaps a much longer duration of remobilization is required to reverse changes of immobilization in articular cartilage and plays a significant role in knee joint movements.

  7. Biomass torrefaction characteristics in inert and oxidative atmospheres at various superficial velocities.

    Science.gov (United States)

    Chen, Wei-Hsin; Lu, Ke-Miao; Liu, Shih-Hsien; Tsai, Chi-Ming; Lee, Wen-Jhy; Lin, Ta-Chang

    2013-10-01

    The reaction characteristics of four biomass materials (i.e. oil palm fiber, coconut fiber, eucalyptus, and Cryptomeria japonica) with non-oxidative and oxidative torrefaction at various superficial velocities are investigated where nitrogen and air are used as carrier gases. Three torrefaction temperatures of 250, 300, and 350 °C are considered. At a given temperature, the solid yield of biomass is not affected by N2 superficial velocity, revealing that the thermal degradation is controlled by heat and mass transfer in biomass. Increasing air superficial velocity decreases the solid yield, especially in oil palm fiber and coconut fiber, implying that the torrefaction reaction of biomass is dominated by surface oxidation. There exists an upper limit of air superficial velocity in the decrement of solid yield, suggesting that beyond this limit the thermal degradation of biomass is no longer governed by surface oxidation, but rather is controlled by internal mass transport.

  8. Branch facial nerve trauma after superficial temporal artery biopsy: a case report

    Directory of Open Access Journals (Sweden)

    Rison Richard A

    2011-01-01

    Full Text Available Abstract Introduction Giant cell arteritis is an emergency requiring prompt diagnosis and treatment. Superficial temporal artery biopsy is the gold diagnostic standard. Complications are few and infrequent; however, facial nerve injury has been reported, leaving an untoward cosmetic outcome. This case report is to the best of our knowledge only the fourth one presented in the available literature so far regarding facial nerve injury from superficial temporal artery biopsy. Case presentation A 73-year-old Caucasian woman presented for neurological evaluation regarding eyebrow and facial asymmetry after a superficial temporal artery biopsy for presumptive giant cell arteritis-induced cephalalgia. Conclusion Damage to branches of the facial nerve may occur after superficial temporal artery biopsy, resulting in eyebrow droop. Although an uncommon and sparsely reported complication, all clinicians of various specialties involved in the care of these patients should be aware of this given the gravity of giant cell arteritis and the widespread use of temporal artery biopsy.

  9. Superficial siderosis of the central nervous system due to chronic hemorrhage from a giant invasive prolactinoma.

    Science.gov (United States)

    Steinberg, Jacob; Cohen, José E; Gomori, John M; Fraifeld, Shifra; Moscovici, Samuel; Rosenthal, Guy; Shoshan, Yigal; Itshayek, Eyal

    2013-07-01

    Superficial siderosis of the central nervous system (CNS) is a rare disorder caused by deposition of hemosiderin in neuronal tissue in the subpial layer of the CNS due to slow subarachnoid or intraventricular hemorrhage. The most common neurologic manifestations include progressive gait ataxia, sensorineural hearing loss, and corticospinal tract signs. We present a case of superficial siderosis in a 43-year-old man who presented to the Emergency Department with sudden onset bilateral visual deterioration and a loss of consciousness. A hemorrhagic giant prolactinoma was diagnosed based on brain CT scan, T1-weighted MRI, and an endocrine blood examination. Susceptibility-weighted non-contrast MRI showed pathognomonic signs of superficial siderosis in the form of a hypointensity rim surrounding the brainstem, cerebellar fissures, and cranial nerves VII and VIII. This report demonstrates that superficial siderosis can be caused by pituitary apoplexy. Copyright © 2012 Elsevier Ltd. All rights reserved.

  10. Clinical inquiries. How does tissue adhesive compare with suturing for superficial lacerations?

    Science.gov (United States)

    Aukerman, Douglas F; Sebastianelli, Wayne J; Nashelsky, Joan

    2005-04-01

    Tissue adhesives are effective and yield results comparable to those with conventional suturing of superficial, linear, and low-tension lacerations. The cosmetic outcome is similar; wound complications, such as infection and dehiscence, may be lower with tissue adhesives. Wound closure of superficial lacerations by tissue adhesives is quicker and less painful compared with conventional suturing (strength of recommendation: A, systematic reviews of randomized trials).

  11. Superficial Dorsal Vein Injury/Thrombosis Presenting as False Penile Fracture Requiring Dorsal Venous Ligation

    OpenAIRE

    Arash Rafiei, MD; Tariq S. Hakky, MD; Daniel Martinez, MD; Justin Parker, MD; Rafael Carrion, MD

    2014-01-01

    Introduction: Conditions mimicking penile fracture are extremely rare and have been seldom described. Aim: To describe a patient with false penile fracture who presented with superficial dorsal vein injury/thrombosis managed with ligation. Methods: A 33‐year‐old male presented with penile swelling and ecchymosis after intercourse. A penile ultrasound demonstrated a thrombosed superficial dorsal vein but also questionable fracture of the tunica albuginea. As the thrombus was expanding, h...

  12. Immunoelectron microscopy study of superficial skin nerves in drug-induced acute urticaria

    OpenAIRE

    Criado, Paulo Ricardo; CRIADO, Roberta Fachini Jardim; TAKAKURA, CLEUSA F.H.; Pagliari, Carla; SOTTO, Mirian Nacagami; Cidia VASCONCELLOS

    2012-01-01

    BACKGROUND: Few studies have evaluated the ultrastructure of the superficial skin nerves in urticaria. OBJECTIVE: The objective of this study was to describe findings in superficial skin nerves in cases of drug-induced acute urticaria. METHODS: Seven patients with drug-induced acute urticaria were included in the study. Skin biopsies were obtained from the urticarial lesion and from the apparently normal skin. The 14 fragments collected were processed for immunogold electron microscopy using ...

  13. A STUDY ON SUPERFICIAL PALMAR ARCH AND IT’S VARIATIONS

    Directory of Open Access Journals (Sweden)

    Venkateswara Rao

    2015-03-01

    Full Text Available INTRODUCTION: Knowledge of the frequency of anatomical variations of arterial pattern of hand is crucial for safe and successful hand surgical approach, diagnostic and therapeutic procedures. The superficial pal mar arch is a major blood supply to the hand. Various ano malous patterns in the superficial arch of hand are reported. The superficial pal mar arch is formed predominantly by ulnar artery with a contribution from superficial branch of radial artery. OBSERVATIONS: Superficial palmar arch is dissected within the p alm and observed from its origin to termination. Variations in its origin, branches were observed. A classic superficial palmar arch was found in 10% [5/50]. O ut of dissected specimens complete arch found in 67% and incomplete arch was 33%. Incomplete arch is formed by ulnar artery alone. It supply four and half fingers and give five branches. Majority of arches is supplied by three and half fingers and gives four branches. DISCUSSION: Many attempts have been made to classify these variations. A complex cla ssification of superficial pal mar arch by Coleman & Anson [1961]. S ince then, many other classification have been suggested by different authors [Karlsson & N iechajev, 1982; al - Turk & Metcalf, 1984; Doscher et al. 1985; Ruengsakulrachh et al. 2001;] provi des simplest understanding of distribution of the arches. Although the classical pattern of the arch occurs in frequently, anatomical presence of a complete superficial palmar arch varies from 84% to 66% [Coleman & Anson]. This incidence was lower in the c urrent study and might be a reflection of sample size [52 hands]. The median artery was found in 10% of the hands, similar frequency to that reported by McCormack et al. [1953].

  14. Anatomic variations of superficial peroneal nerve: clinical implications of a cadaver study.

    Science.gov (United States)

    Prakash; Bhardwaj, Ajay Kumar; Singh, Deepak Kumar; Rajini, T; Jayanthi, V; Singh, Gajendra

    2010-01-01

    Superficial peroneal nerve and its branches are frequently at risk for iatrogenic damage. Although different studies on anatomical variations of superficial peroneal nerve are available in the medical literature, such reports are rare from India. Hence the present study was undertaken on Indian population. A total of 60 specimens of inferior extremities from 30 properly embalmed and formalin fixed cadavers were dissected and examined for the location and course of the superficial peroneal nerve including number, level, course and distributions of branches. The superficial peroneal nerve in 28.3% specimens was located in the anterior compartment of the leg. In 8.3% specimens the superficial peroneal nerve branched before piercing between the peroneus longus and extensor digitorum longus muscle whereas in 11.7% specimens it branched after piercing the aforementioned muscles and before piercing the deep fascia. In 41 out of 60 specimens the sensory division of superficial peroneal nerve branched into the medial dorsal cutaneous nerve and intermediate dorsal cutaneous nerve distal to its emergence from the deep fascia and proximal to its relation to the extensor retinaculum. In 20 out of 60 specimens the accessory deep peroneal nerve, an additional branch from the sensory division of superficial peroneal nerve, through its course in the anterior compartment of the leg passed deep to the extensor retinaculum and supplied the ankle and the dorsum of foot. Hopefully the present study will help in minimizing iatrogenic damage to the superficial peroneal nerve and its branches while performing arthroscopy, local anesthetic block, surgical approach to the fibula, open reduction and internal fixation of lateral malleolar fractures, application of external fixators, elevation of a fasciocutaneous or fibular flaps for grafting, surgical decompression of neurovascular structures, or miscellaneous surgery on leg, foot and ankle.

  15. Tension characteristics of the iliotibial tract and role of its superficial layer.

    Science.gov (United States)

    Matsumoto, H; Seedhom, B

    1995-04-01

    Change in tension along the iliotibial tract by sectioning its superficial layer was analyzed using 5 fresh whole cadavers, and the role of the superficial layer was investigated. Tibial attachment of the iliotibial tract (Gerdy's tubercle) was detached and pulled gradually in a distal direction with respect to the femur. Tension along the iliotibial tract by the distal movement of Gerdy's tubercle (stretching the iliotibial tract) was measured first when the whole iliotibial tract was intact, and then when the superficial layer was sectioned at different levels. When the superficial layer was sectioned above the greater trochanter, no significant change in tension was observed from that observed when the whole iliotibial tract was intact. When the superficial layer was sectioned at the middle of the thigh, the tension at Gerdy's tubercle was significantly reduced. It was concluded that not only Kaplan's fibers, those attached to the distal end of the femur and Gerdy's tubercle, but also the superficial layer of the iliotibial tract had an important role in producing tension at Gerdy's tubercle.

  16. Multisensory Response Modulation in the Superficial Layers of the Superior Colliculus

    Science.gov (United States)

    Maier, Alexander; Nidiffer, Aaron; Wallace, Mark T.

    2014-01-01

    The mammalian superior colliculus (SC) is made up of seven distinct layers. Based on overall differences in neuronal morphology, afferent and efferent projection patterns, physiological properties, and presumptive behavioral role, the upper three layers have been classically grouped together as the superficial layers and the remaining four layers collectively make up the deep layers. Although the superficial layers receive their primary inputs from the retina and primary visual cortex, the deep layers receive inputs from extrastriate visual cortical areas and from auditory, somatosensory, and motor-related structures. In contrast, there is no evidence of monosynaptic nonvisual inputs to the superficial layers. However, more recent studies have revealed anatomical connections between the superficial and deep layers, thus providing the substrate for possible communication between these two functional divisions of the SC. In this study, we provide physiological evidence for auditory influences on visual responses in the superficial layers of the SC. Using extracellular recordings of local field potentials (LFPs) and multiunit activity, we demonstrate multisensory effects in the superficial layers of the cat SC such that subthreshold auditory activity (as seen in the LFP) modulates visual responses (reflected in spiking activity) when the two stimuli are presented together. These results have important implications for our understanding of the functional organization of the SC and for the neural basis of multisensory integration in general. PMID:24647954

  17. Rugosidade superficial de uma porcelana feldspática odontológica após simulação de ajuste oclusal e polimento = Surface roughness of a feldspathic dental porcelain after simulation of occlusal adjustment and polishing

    OpenAIRE

    Werneck, Rafael Dario; Neisser, Maximiliano Piero

    2008-01-01

    Objetivo: O objetivo desse estudo foi avaliar a rugosidade superficial (Ra) de uma porcelana feldspática glazeada e submetida a dois sistemas de acabamento e polimento após simulação de ajuste oclusal. Metodologia: Vinte corpos-de-prova de porcelana feldspática glazeada (IPS Classic Ivoclar) foram confeccionados em forma de disco de acordo com as recomendações do fabricante e divididos em dois grupos (A e B). A leitura da rugosidade média superficial inicial (Ra 0) foi realizada com um rugosí...

  18. Fotometria superficial BVRI de 18 galáxias fracas

    Science.gov (United States)

    Saraiva, M. F. O.; Silva, P. R.

    2003-08-01

    Conhecer as propriedades de galáxias a diferentes redshifts é uma questão fundamental para entender o problema da formação e evolução das galáxias, e desde a década passada tem se intensificado fortemente o estudo de galáxias muito distantes. No entanto parece haver um interesse menor em galáxias a distâncias intermediárias, que aparecem como objetos de fundo em imagens de objetos próximos, e que são igualmente importantes. Examinando imagens BVRI de longa exposição, ótimo sinal/ruído, grande campo (46'x46'), das vizinhanças de NGC 7479, detectamos 18 galáxias fracas (18 sentido mostrou que as cores aparentes B-V, V-R e V-I dos objetos da nossa amostra, a menos de duas exceções, ocupam regiões bem definidas nos diagramas cor-cor, e não apresentam diferenças notáveis em relação às cores típicas de galáxias próximas.

  19. Fístula arteriovenosa safeno-femoral superficial como acesso à hemodiálise: descrição de técnica operatória e experiência clínica inicial Superficial saphenofemoral arteriovenous fistula as access to hemodialysis: description of operative technique and initial clinical experience

    Directory of Open Access Journals (Sweden)

    João Antônio Corrêa

    2005-01-01

    Full Text Available OBJETIVO: Descrever uma técnica de confecção de fístula arteriovenosa para acesso à hemodiálise, avaliando os aspectos técnicos de sua confecção, eficácia e complicações. MÉTODO: Foram realizadas 16 fístulas arteriovenosas safeno-femoral superficial em 15 pacientes, no período de agosto de 1998 a outubro de 2000. Esses procedimentos foram efetuados em pacientes sem opções de acesso em membros superiores. A técnica utilizada foi a anteriorização e superficialização da veia safena magna, anastomosando-a na artéria femoral superficial distal. As fístulas arteriovenosas safeno-femoral superficial foram avaliadas quanto à facilidade de punção, fluxo adequado, pressão venosa espontânea, adequação de diálise e complicações no intra-operatório. RESULTADOS: Todas as fístulas puderam ser concluídas com sucesso, sem complicações no intra-operatório. Houve um óbito precoce, porém as demais estavam aptas às punções no 30º dia pós-operatório. Quatorze fístulas foram utilizadas e, na evolução, três pacientes foram submetidos a transplante renal, quatro apresentaram trombose, dois apresentaram pseudoaneurisma de punção. CONCLUSÃO: As fístulas arteriovenosas safeno-femoral superficial mostram-se como boa alternativa para pacientes que não possuem outras possibilidades de acesso em membros superiores, permitindo tratamento hemodialítico eficaz, com boa taxa de perviedade em médio prazo.OBJECTIVE: To describe a technique for creating an arteriovenous fistula as an access to hemodialysis, evaluating its technical aspects, efficacy and complications. METHOD: From August 1998 to October 2000, 16 superficial saphenofemoral arteriovenous fistulas were performed in 15 patients. These procedures were used in patients without access options in upper limbs. The surgical technique consisted of an anteriorization and a superficialization of the saphenous vein anastomosed to the superficial femoral artery in the

  20. Study of the superficial ozone concentrations in the atmosphere of Comunidad de Madrid using passive samplers Estudio de las concentraciones de ozono superficial en la atmósfera de la Comunidad de Madrid usando muestreadores pasivos

    Directory of Open Access Journals (Sweden)

    E. Díaz Ramiro

    2001-06-01

    Full Text Available The ozone is a secondary atmospheric pollutant which is generated for photochemical reactions of volatil organic compounds (VOC’s and nitrogen oxides (NOx. In Spain the ozone is a big problem as a consequence of the solar radiation to reach high levels. Exposure over a period of time to elevated ozone concentrations can cause damage in the public health and alterations in the vegetation.The aim of this study is to carry out the development and validation of a measurement method to let asses the superficial ozone levels in the Comunidad de Madrid, by identifing the zones more significants, where to measure with UV photometric monitors (automatics methods this pollutant and where the health and the vegetation can be affected. To such effect, passive samplers are used, which have glass fiber filters coated with a solution of sodium nitrite, potassium carbonate, glycerol and water. The nitrite ion in the presence of ozone is oxidized to nitrato ion, which it is extrated with ultrapure water and analyzed for ion chromatography, by seen proportional to the concentration existing in the sampling point.The results of validation from field tests indicate a excellent correlation between the passive and the automatic method.The higher superficial ozone concentrations are placed in rural zones, distanced of emission focus of primary pollutants (nitrogen oxides and volatil organic compounds... principally in direction soutwest and northwest of the Comunidad of Madrid.El ozono es un contaminante atmosférico secundario formado por reacciones fotoquímicas de compuestos orgánicos volátiles (COV y óxidos de nitrógeno (NOx. En España, el ozono es un gran problema como consecuencia de los altos niveles alcanzados por la radiación solar. Exposiciones periódicas a concentraciones elevadas de ozono, pueden causar daños en la salud pública y alteraciones en la vegetación.El objetivo del presente estudio es desarrollar y validar un método de medida que

  1. Tensão superficial estática de misturas em tanque de glyphosate + chlorimuron-ethyl isoladas ou associadas com adjuvantes Static superficial tension of glyphosate and chlorimuron-ethyl tank mixtures with or without adjuvants

    Directory of Open Access Journals (Sweden)

    C.D.G. Maciel

    2010-01-01

    Full Text Available Objetivou-se neste estudo avaliar a tensão superficial estática, o pH e a produção da espuma de misturas em tanque de glyphosate + chlorimuron-ethyl, associadas ou não com adjuvantes. Dois trabalhos foram realizados, sendo a primeira etapa desenvolvida em delineamento inteiramente casualizado com seis tratamentos e 20 repetições, representados por soluções dos herbicidas glyphosate (540,0 g e.a. ha-1 e chlorimuron-ethyl (7,5 g ha-1, isolados e em mistura em tanque nas formulações: Polaris®; Roundup Ready®; Classic®; Polaris® + Classic®; Roundup Ready® + Classic® e testemunha (água. Na segunda etapa foram estudados em DIC 70 tratamentos e 20 repetições, em fatorial 2 x 5 x 7, constituído por duas misturas de glyphosate com chlorimuron-ethyl (Polaris® + Classic® e Roundup Ready ® + Classic®, cinco adjuvantes (Joint Oil®; Nimbus®; Assist®; Natur' Oil® e Agr' Óleo® e sete doses dos adjuvantes (0,000; 0,031; 0,062; 0,125; 0,250; 0,500 e 1,000% de v/v. As soluções de Polaris® e Roundup Ready®; isoladas ou em misturas com Classic®; caracterizaram-se por tensões superficiais estáticas de 43,2 e 35,9 mN m-1 e pH médios em torno de 4,5 a 4,6, respectivamente. As misturas de Polaris®+Classic®; Roundup Ready®+Classic® e Classic® apresentaram a maior quantidade e persistência da espuma ao longo do tempo, quando comparadas às formulações de Polaris® e Roundup Ready®. Os adjuvantes promoveram redução da tensão superficial quando associados às misturas de Polaris® + Classic® e Roundup Ready® + Classic®; caracterizando-se em termos de eficiência pela ordem decrescente: Nimbus® (36,5% e 25,8% This work aimed to evaluate static superficial tension, pH and foam production in glyphosate + chlorimuron-ethyl tank mixtures with or without adjuvants. The experiment consisted of two stages, with the first stage being arranged in a complete randomized design, with six treatments and 20 replications, represented

  2. Comparação entre dois métodos para a determinação do volume de escoamento superficial

    Directory of Open Access Journals (Sweden)

    F. F. Pruski

    2001-06-01

    Full Text Available A determinação do volume máximo de escoamento superficial é fundamental para o dimensionamento de diversos tipos de obras hidráulicas, constituindo o parâmetro de maior importância no projeto de sistemas de terraceamento em nível. A determinação incorreta do volume escoado superficialmente gera imprecisões no dimensionamento destes sistemas que, quando superdimensionados, apresentam elevado custo de instalação. Tendo em vista esses aspectos, o presente trabalho teve por objetivo comparar os valores de volume máximo de escoamento superficial, obtidos por meio do método empírico do número da curva, desenvolvido pelo Serviço de Conservação de Solos dos Estados Unidos, com aqueles obtidos por meio do método desenvolvido por Pruski e colaboradores, baseado em princípios consagrados na hidrologia. O desempenho dos dois métodos foi analisado com base nas condições pluviométricas correspondentes a Belo Horizonte e Uberlândia, para período de retorno de 10 anos. Evidenciaram-se grandes diferenças entre os valores de volume de escoamento superficial obtidos pelos dois métodos, as quais se mostraram mais acentuadas para maiores velocidades de infiltração de água no solo, tendo o método proposto por Pruski e colaboradores apresentado comportamento mais condizente com a realidade.

  3. Coeficiente de fricción y mecanismos de degradación superficial en materiales usados para la construcción de implantes de juntas articulares

    Directory of Open Access Journals (Sweden)

    Juan Alejandro Uribe A.

    2004-01-01

    Full Text Available El presente estudio evaluó los materiales más usados en nuestro medio para la fabricación de implantes de juntas articulares, evidenciando los mecanismos de deterioro superficial presentes en tres tribosistemas: a pin de acero AISI 316LVM contra un disco de acero AISI 316L, b pin de acero inoxidable AISI 316LVM contra disco de polietileno de ultra alto peso molecular (UHMWPE y c pin de una aleación Ti6Al4V contra disco de polietileno de ultra alto peso molecular (UHMWPE, con velocidad de deslizamiento de 0.58 m/s y diferentes cargas normales. Se adaptó una máquina de ensayos de desgaste normalizada del tipo pin – disco (norma ASTM G 99, de tal forma que permitiera sumergir el sistema en una solución de suero de sangre de bovino con una concentración de proteínas de 0.03 g/ml, la cual simula el ataque corrosivo al que se ven sometidos los materiales en las juntas implantadas dentro del cuerpo humano. Se midieron la variación de la fuerza y el coeficiente de fricción en el tiempo para estudiar el comportamiento del tribosistema, caracterizando las superficies desgastadas macro y microscópicamente con el fin de identificar los fenómenos de deterioro superficial. La adhesión fue el mecanismo predominante en el deslizamiento de los pares metal – polímero, mientras que la combinación de adhesión y abrasión fue responsable por un daño mucho mayor en el sistema metal-metal.

  4. Anterior Approach Total Ankle Arthroplasty: Superficial Peroneal Nerve Branches at Risk.

    Science.gov (United States)

    McAlister, Jeffrey E; DeMill, Shyler L; Hyer, Christopher F; Berlet, Gregory C

    2016-01-01

    In ankle arthroplasty, little attention has been given to intraoperative nerve injury and its postoperative sequelae. The aim of the present anatomic study was to determine the relationship of the superficial peroneal nerve to the standard anterior approach for total ankle arthroplasty. The superficial peroneal nerve was dissected in 10 below-the-knee cadaver specimens. The medial and intermediate dorsal cutaneous branches were identified. A needle was placed at the ankle joint. The following measurements were recorded: bifurcation into the medial and intermediate dorsal cutaneous branches, reference needle to the branches of the medial and intermediate superficial peroneal nerve, and the crossing branches of the medial dorsal cutaneous nerve. Two specimens (20%) had a medial dorsal cutaneous branch cross from medially to laterally. Eight specimens (80%) had a crossing branch of the medial dorsal cutaneous branch within 5 cm of the incision. No intermediate dorsal cutaneous branches were within the incision. The results from the present cadaver study suggest that during an anterior ankle approach, aberrant branches of the superficial peroneal nerve could require transection in 20% of patients at the joint level and ≤80% of patients with distal extension >35 mm from the ankle joint. The risk of injury to branches of the superficial peroneal nerve is substantial. The risk of nerve injury can be decreased with meticulous operative technique, smaller incisions, and the avoidance of aggressive retraction.

  5. Effect of erbium:yttrium-aluminum-garnet laser energies on superficial and deep dentin microhardness.

    Science.gov (United States)

    Chinelatti, Michelle Alexandra; Raucci-Neto, Walter; Corona, Silmara Aparecida Milori; Palma-Dibb, Regina Guenka

    2010-05-01

    This study evaluated the microhardness of superficial and deep dentin irradiated with different erbium:yttrium-aluminum-garnet (Er:YAG) laser energies. Seventy-two molars were bisected and randomly assigned to two groups (superficial dentin or deep dentin) and into six subgroups (160 mJ, 200 mJ, 260 mJ, 300 mJ, 360 mJ, and control). After irradiation, the cavities were longitudinally bisected. Microhardness was measured at six points (20 microm, 40 microm, 60 microm, 80 microm, 100 microm, and 200 microm) under the cavity floor. Data were submitted to analysis of variance (ANOVA) and Fisher's tests (alpha = 0.05). Superficial dentin presented higher microhardness than deep dentin; energy of 160 mJ resulted in the highest microhardness and 360 mJ the lowest one. Values at all points were different, exhibiting increasing microhardness throughout; superficial dentin microhardness was the highest at 20 microm with 160 mJ energy; for deep dentin, microhardness after irradiation at 160 mJ and 200 mJ was similar to that of the control. The lowest energy increased superficial dentin microhardness at the closest extent under the cavity; deep dentin microhardness was not altered by energies of 160 mJ and 200 mJ.

  6. Roles of the Fibrous Superficial Zone in the Mechanical Behavior of TMJ Condylar Cartilage.

    Science.gov (United States)

    Ruggiero, Leonardo; Zimmerman, Brandon K; Park, Miri; Han, Lin; Wang, Liyun; Burris, David L; Lu, X Lucas

    2015-11-01

    In temporomandibular joints (TMJs), the cartilage on the condylar head displays a unique ultrastructure with a dense layer of type I collagen in the superficial zone, different from hyaline cartilage in other joints. This study aims to elucidate the roles of this fibrous zone in the mechanical behaviors, particularly lubrication, of TMJ under physiological loading regimes. Mechanical tests on porcine condylar cartilage demonstrated that the superficial and middle-deep zones exhibit tension-compression nonlinearity. The tensile and compressive moduli of the superficial zone are 30.73 ± 12.97 and 0.028 ± 0.016 MPa, respectively, while those for the middle-deep zone are 2.43 ± 1.75 and 0.14 ± 0.09 MPa. A nonlinear finite element model of condylar cartilage was built to simulate sliding of a spherical probe over the articular surface. The presence of the superficial zone significantly promoted interstitial fluid pressurization (IFP) inside the loaded cartilage and reduced the friction force on the surface, compared to the case without the superficial zone. Finite element simulations showed that IFP depends on sliding speed but not normal load, which matches the experimental results. This study revealed the presence of the fibrous zone can significantly reduce the deformation of condylar cartilage under compression and the friction force on its surface during sliding.

  7. Gross anatomy of superficial fascia and future localised fat deposit areas of the abdomen in foetus

    Directory of Open Access Journals (Sweden)

    Pramod Kumar

    2013-01-01

    Full Text Available Background: The development and popularity of body contouring procedures such as liposuction and abdominoplasty has renewed interest in the anatomy of the superficial fascia and subcutaneous fat deposits of the abdomen. The study of anatomy of fascia and fetal adipose tissue was proposed as it may be of value in understanding the possible programing of prevention of obesity. Objectives: The present study was undertaken to understand the gross anatomy of superficial fascia of abdomen and to study the gross anatomy of future localized fat deposits (LFDs area of abdomen in fetus. Materials and Methods: Four fetus (two male & two female of four month of intrauterine life were dissected. Attachments & layers of superficial fascia and future subcutaneous fat deposit area of upper and lower abdomen were noted. Results: Superficial fascia of the abdomen was multi layered in mid line and number of layers reduced laterally as in adult. The future abdominal LFD (localized fat deposits area in fetus shows brownish-white blubbary tissue without well-defined adult fat lobules. Conclusion: The attachment and gross anatomy of superficial fascia of the fetus was similar to that in adults. The future LFD areas showed brownish white blubbary tissue with ill-defined fat lobules.

  8. Superficial and deep lymph node dissection for stage III cutaneous melanoma: clinical outcome and prognostic factors

    Directory of Open Access Journals (Sweden)

    Mozzillo Nicola

    2013-02-01

    Full Text Available Abstract Background The aims of this retrospective analysis were to evaluate the effect of combined superficial and deep groin dissection on disease-free and melanoma-specific survival, and to identify the most important factors for predicting the involvement of deep nodes according to clinically or microscopically detected nodal metastases. Methods Between January 1996 and December 2005, 133 consecutive patients with groin lymph node metastases underwent superficial and deep dissection at the National Cancer Institute, Naples. Lymph node involvement was clinically evident in 84 patients and detected by sentinel node biopsy in 49 cases. Results The 5-year disease-free survival was significantly better for patients with superficial lymph node metastases than for patients with involvement of both superficial and deep lymph nodes (34.9% vs. 19.0%; P = 0.001. The 5-year melanoma-specific survival was also significantly better for patients with superficial node metastases only (55.6% vs. 33.3%; P = 0.001. Conclusions Metastasis in the deep nodes is the strongest predictor of both disease-free and melanoma-specific survival. Deep groin dissection should be considered for all patients with groin clinical nodal involvement, but might be spared in patients with a positive sentinel node. Prospective studies will clarify the issue further.

  9. Efficacy and safety of endoscopic submucosal dissection for superficial cancer of the cervical esophagus.

    Science.gov (United States)

    Iizuka, Toshiro; Kikuchi, Daisuke; Hoteya, Shu; Kajiyama, Yoshiaki; Kaise, Mitsuru

    2017-08-01

    Cervical esophageal cancer (CEC) is a less common form of cancer and often locally advanced at the time of diagnosis; thus, survival rates for patients with CEC remain poor. However, no reports exist on results of endoscopic submucosal dissection (ESD) for superficial cancer at the cervical esophagus. The aim of this retrospective study was to elucidate the clinicopathological features and clinical outcomes of ESD for superficial CEC.  ESD was performed on 891 lesions (in 662 patients) for superficial esophageal cancer from January 2008 to December 2015. Of these, 45 lesions (45 patients) were enrolled in the case group (CEC), and 405 lesions (375 patients) were enrolled in the control group (superficial cancer in the middle thoracic esophagus). The safety of ESD, including R0 resection rate and adverse events, and the efficacy, such as the local recurrence rate and overall survival rate, were evaluated.  The R0 resection rate was 91.1 % in the case group and 96 % in the control group. The rate of esophageal stricture was significantly higher in the case group (20 %) than in the control group (6.6 %). There was no local recurrence, and the 3-year survival rate was 88.4 % in the case group and 96.7 % in the control group. ESD for superficial cancer in the cervical esophagus was achieved safely, and successful local control was also confirmed. However, the esophageal stricture after ESD was more frequent.

  10. Superficial Mucocele of the Ventral Tongue: Presentation of a Rare Case and Literature Review.

    Science.gov (United States)

    Brooks, John K; Schwartz, Kevin G; Basile, John R

    2016-06-01

    The superficial mucocele is a rare variant of the common mucocele and noted microscopically by subepithelial pools of mucin. To increase the understanding of oral superficial mucoceles, a database was created from the demographics of case reports and case series from a PubMed search. At least 200 patients with superficial mucoceles have been described in the English-language literature, 82 of whom had biopsy-proven lesions; additional clinical information was available for 39 of these 82 patients. Compiled data suggest superficial mucoceles offered phenotypic distinctions from the common mucocele because they were more apt to occur in middle-aged women, often on the soft palate and buccal mucosa. Affected patients frequently had multiple lesions that were smaller than 3 mm and nearly 50% of patients developed recurrence. This report also describes the first histopathologically confirmed case of a superficial mucocele arising on the ventral tongue in a 22-year-old man. It is speculated that the glossal lesion might have developed from long-term impingement from exposed metal barbs from an orthodontic splint. Persistent lesions or atypical presentations underscore the need for histopathologic examination. Copyright © 2015 The American Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.

  11. Castelli di carta. La piega per la costruzione di superfici articolate

    Directory of Open Access Journals (Sweden)

    Andrea Casale

    2012-06-01

    Full Text Available L’antica arte del piegare la carta, l’Origami, sta vivendo un rinnovato interesse che coinvolge molti aspetti della ricerca.  Con il termine origami, si intende lo studio del modo di piegare il foglio di carta per imporgli una specifica forma.  La superficie tassellata per mezzo di specifiche pieghe, si propone come un nuovo soggetto di studio: la superficie piegata articolata. La forma congiunta al movimento, assume un particolare interesse nella contemporanea ricerca geometrica e architettonica. Il panorama contemporaneo, propone opere di architettura “responsiva”, capaci di modificare le proprie caratteristiche per adeguarsi a nuove condizioni. La superficie piegata articolata sembra particolarmente adatta a descrivere questo modo d’intendere l’architettura, reagendo a diverse volontà e di conseguenza modificando la propria conformazione attraverso un attento controllo progettuale della forma.

  12. Neurothekeoma palpebrae in association with multiple superficial angiomyxomas: Tegumental Angiomyxoma- Neurothekeoma syndrome (TAN syndrome

    Directory of Open Access Journals (Sweden)

    Tan Aik Kah

    2011-09-01

    Full Text Available We report a case of 10-year-old Indian girl with history of multiple superficial angiomyxoma, presented with three months history of painless right upper lid swelling. There were no visual dysfunctions. Previously, the patient had multiple superficial angiomyxoma (left pinna, left upper cheek, left upper limb, chest, right axilla, hard palate and epidermal cyst (chin. The histopathological specimens were negative to S-100 protein antibody. Systemic review and family history was unremarkable. Excision biopsy and upper lid reconstruction were performed. Intraoperatively the tumor was multilobulated, firm, well encapsulated and did not invade the underlying tarsal plate. Histopathological features of the upperlid tumor were consistent with nerves sheath myxoma (neurothekeoma. To the best of the authors’ knowledge, this is the first reported case of neurothekeoma in association with multiple superficial angiomyxoma.

  13. Superficial siderosis of the central nervous system secondary to spinal ependymoma.

    Science.gov (United States)

    Pikis, Stylianos; Cohen, José E; Vargas, Andres A; Gomori, J Moshe; Harnof, Sagi; Itshayek, Eyal

    2014-11-01

    Superficial siderosis of the central nervous system is a syndrome caused by deposition of hemosiderin in the subpial layers of the central nervous system, occurring as a result of recurrent asymptomatic or symptomatic bleeding into the subarachnoid space. We report a rare case of superficial siderosis in a 33-year-old man who presented with sensorineural hearing loss. The diagnosis of superficial siderosis on MRI brain studies led to further investigations with detection of a spinal ependymoma at L1-L2, compressing the cauda equina. Gross total resection of the tumor arrested the progression of the neurological deterioration. Our report underlies the importance of early diagnosis and surgical management, with imaging examination of the full neuroaxis to identify the source of bleeding, to halt disease progression and improve prognosis.

  14. Establishment of a superficial skin infection model in mice by using Staphylococcus aureus and Streptococcus pyogenes.

    Science.gov (United States)

    Kugelberg, Elisabeth; Norström, Tobias; Petersen, Thomas K; Duvold, Tore; Andersson, Dan I; Hughes, Diarmaid

    2005-08-01

    A new animal model for the purpose of studying superficial infections is presented. In this model an infection is established by disruption of the skin barrier by partial removal of the epidermal layer by tape stripping and subsequent application of the pathogens Staphylococcus aureus and Streptococcus pyogenes. The infection and the infection route are purely topical, in contrast to those used in previously described animal models in mice, such as the skin suture-wound model, where the infection is introduced into the deeper layers of the skin. Thus, the present model is considered more biologically relevant for the study of superficial skin infections in mice and humans. Established topical antibiotic treatments are shown to be effective. The procedures involved in the model are simple, a feature that increases throughput and reproducibility. This new model should be applicable to the evaluation of novel antimicrobial treatments of superficial infections caused by S. aureus and S. pyogenes.

  15. Rethinking the standard trans-cortical approaches in the light of superficial white matter anatomy.

    Science.gov (United States)

    Latini, Francesco; Ryttlefors, Mats

    2015-12-01

    A better comprehension of the superficial white matter organization is important in order to minimize potential and avoidable damage to long or intermediate association fibre bundles during every step of a surgical approach. We recently proposed a technique for cadaver specimen preparation, which seems able to identify a more systematic organization of the superficial white matter terminations. Moreover, the use of the physiological intracranial vascular network for the fixation process allowed us to constantly show main vascular landmarks associated with white matter structures. Hence three examples of standard approaches to eloquent areas are herein reanalyzed starting from the first superficial layer. New insights into the possible surgical trajectories and subsequent quantitative damages of both vessels and white matter fibres can help readapt even the most standard and widely accepted approach trough the brain cortex. A more detailed study of these fine anatomical details may become in the near future a fundamental part of the neurosurgical training and the preoperative planning.

  16. Mesenchymal progenitor cells derived from synovium and infrapatellar fat pad as a source for superficial zone cartilage tissue engineering: analysis of superficial zone protein/lubricin expression.

    Science.gov (United States)

    Lee, Sang Yang; Nakagawa, Toshiyuki; Reddi, A Hari

    2010-01-01

    Superficial zone protein (SZP) is a boundary lubricant of articular cartilage in joints. As SZP at the surface of articular cartilage plays an important role in the normal function of synovial joints, the localization of SZP-secreting cells at the surface of tissue-engineered cartilage is prerequisite. The aim of this study was to identify suitable progenitor cell sources for tissue engineering of superficial zone cartilage. We investigated whether mesenchymal progenitor cells (MPCs) from synovium and infrapatellar fat pad (IFP) have the potential for secretion of SZP after chondrogenic differentiation in an aggregate pellet culture system. SZP was immunolocalized in pellets from synovium-MPCs and IFP-MPCs. The enzyme-linked immunosorbent assay analysis of SZP demonstrated that chondrogenically differentiated synovium-MPC and IFP-MPC pellets secreted SZP into media. Real-time polymerase chain reaction analysis showed significant upregulation of SZP mRNA in synovium-MPC and IFP-MPC pellets after chondrogenic differentiation. The synovium-MPCs demonstrated the higher colony-forming, proliferative, and chondrogenic potential, and exhibited greater SZP secretion after chondrogenic induction compared with IFP-MPCs. In conclusion, both synovium and IFP are promising cell sources for tissue engineering of superficial zone cartilage.

  17. Microdureza superficial do cimento resinoso de ativado por duas diferentes fontes de luz com interposição de cerômero e porcelana

    OpenAIRE

    Alencar Júnior, Emmanuel Arraes de [UNESP

    2005-01-01

    Nessa pesquisa utilizou-se de três unidades fotoativardoras na polimerização de uma marca comercial de cimento resinoso de dupla ativação, com a interposição de uma lâmina de cerômero e de porcelana, para avaliar a microdureza superficial do cimento resinoso, considerando sua superfície do topo e da base Os corpos-de-prova foram confeccionados utilizando-se matrizes metálicas com 2mm de espessura e 16mm de diâmetro, com o orifício central medindo 8mm de diâmetro (figura 4), coincidindo com o ...

  18. CASTonCAST: Superficies arquitectónicas complejas a partir de componentes prefabricados apilables

    Directory of Open Access Journals (Sweden)

    Lluis Enrique

    2016-04-01

    Full Text Available Este artículo presenta el sistema CASTonCAST para el diseño y laproducción de superficies arquitectónicas complejas a partir de componentes prefabricados apilables. Este sistema está compuesto por dos partes complementarias: una innovadora técnica de fabricación de componentes prefabricados apilables y un nuevo método geométrico para el diseño de superficies complejas a partir de baldosas sólidas apilables. Este trabajo describe las dos partes del sistema mediante prototipos físicos y estudios geométricos.

  19. Estudio anatómico de la rama superficial del nervio radial, implicaciones quirúrgicas

    OpenAIRE

    Vergara Amador, Enrique; Nieto, José Luis

    2010-01-01

    Antecedentes. Conocer la anatomía de la rama superficial del nervio radial, es indispensable para la adecuada práctica de cirugías que involucran la mano y la muñeca. Objetivo. Determinar las relaciones del nervio radial y sus ramas con el tubérculo de Lister, la apófisis estiloides del radio y la distribución en el dorso de la mano. Material y métodos. Se disecaron 25 piezas de cadáveres frescos. Se identificó la rama superficial del nervio radial y se midió la distancia entre la sali...

  20. Superficial Siderosis and Sudden Sensorineural Hearing Loss: A Case Report and Review of the Literature

    Directory of Open Access Journals (Sweden)

    Kirsti S. V. Lee

    2013-01-01

    Full Text Available This case report highlights an unusual case of sudden sensorineural hearing loss related to superficial siderosis (SS. Our patient had a craniotomy for medulloblastoma 23 years earlier, and this may represent a delayed complication related to this procedure. Magnetic resonance imaging (MRI remains the key diagnostic investigation to illustrate the imaging features of superficial siderosis and exclude other pathologies. Increased awareness of progressive and sudden hearing complications caused by SS is important in the otolaryngologic community to expedite management and better counsel patients during the consent process.

  1. Bacterias en superficies contactadas durante las tomas radiográficas intraorales

    OpenAIRE

    Lee, Guihan; Calderón-Ubaquí, Victor; Sacsaquispe-Contreras, Sonia

    2016-01-01

    Objetivo: Determinar la presencia de bacterias mediante el análisis microbiológico en las superficies contactadas por el operador durante la toma y procesado de radiografías intraorales en diferentes momentos del día en el Servicio de Radiología Oral de la UPCH. Materiales y métodos: Se realizó un muestreo en nueve superficies del servicio de radiología oral. Las muestras se tomaron en dos momentos por el mismo investigador; al inicio y al finalizar las actividades en el servicio, se realizó ...

  2. Bacterias en superficies contactadas durante las tomas radiográficas intraorales

    OpenAIRE

    Lee, Guihan; Calderón-Ubaquí, Victor; Sacsaquispe-Contreras, Sonia

    2016-01-01

    Objetivo: Determinar la presencia de bacterias mediante el análisis microbiológico en las superficies contactadas por el operador durante la toma y procesado de radiografías intraorales en diferentes momentos del día en el Servicio de Radiología Oral de la UPCH. Materiales y métodos: Se realizó un muestreo en nueve superficies del servicio de radiología oral. Las muestras se tomaron en dos momentos por el mismo investigador; al inicio y al finalizar las actividades en el servicio, se realizó ...

  3. Superficial composition in binary solid solutions A(B): Drastic effect of pure element surface tensions

    Science.gov (United States)

    Rolland, A.; Aufray, B.

    1985-10-01

    This paper deals with a comparative study of surface segragation of Pb and Ni respectively from Ag(Pb)(111) and Ag(Ni)(111) solid solutions. A high level of segregation of the solute is observed for both systems characterized by very low solute solubility. However, the superficial composition strongly depends on the relative surface tensions of the pure elements: the solute atoms are strictly on superficial sites when γ solute is smaller than γ solvent; in contrast uppermost layer consists purely of solvent when γ solute is greater than γ solvent. Two schematic distributions in close proximity to the surface are proposed in the last case.

  4. Análisis de estriaciones en superficies dentarias utilizando Khoros

    OpenAIRE

    Russo, Claudia Cecilia; Sanz, Cecilia Verónica

    2001-01-01

    Se presenta una aplicación interdisciplinaria realizada entre el grupo de investigación de la Facultad de Odontología de la UNLP y el grupo de investigación del LIDI (Fac. Informática- UNLP), donde se investigan hábitos alimentarios, tipos de dietas, modos de procesamiento de alimentos y/o usos dentarios, en poblaciones extintas. Para ello se analizan imágenes digitales de superficies dentarias, estudiando con SEM (microscopio electrónico de barrido) el patrón de estriaciones de las superfici...

  5. Efectos del entrenamiento en superficies inestables sobre el equilibrio y funcionalidad en adultos mayores

    OpenAIRE

    2015-01-01

    Objetivo: determinar los efectos de un programa de ocho semanas de entrenamiento en superficies inestables con y sin trabajo de fuerza, sobre el equilibrio y la capacidad funcional en adultos mayores de 60 años, pertenecientes al programa “Escuelas populares del deporte” del inder Medellín. Metodología: se llevó a cabo un estudio experimental simple, ciego y enmascarado con asignación al azar de 34 sujetos a dos grupos de intervención con y sin trabajo de fuerza sobre superficies inestables; ...

  6. A peculiar fibroma-like lesion of superficial soft tissue: morphologic and immunophenotypic evaluation.

    Science.gov (United States)

    Filotico, M; Damuri, A; Filotico, R

    2014-12-01

    Apeculiar lesion of superficial soft tissue characterised by fibroma-like morphology and an immunohistochemical profile consisting of CK+, VIM+, CD34+, CD31+/-, FLI1+ and INI-1 retained is described. The lesion entered into differential diagnosis with the so-called fibroma-like variant of epithelioid sarcoma, with the entities defined as ES-like/pseudomyogenic haemangioendothelioma and the recently identified entity defined as superficial CD34+ fibroblastic tumour. All of these entities share a common morphological structure, but differ in their immunophenotypic profile.

  7. Examination of the Restoration of Epithelial Barrier Function Following Superficial Keratectomy

    OpenAIRE

    Hutcheon, Audrey E. K.; Sippel, Kimberly C.; Zieske, James D.

    2006-01-01

    The goal of the present study was to determine the rate of restoration of the corneal epithelial barrier following a superficial keratectomy using a functional assay of tight junction integrity. Adult Sprague-Dawley rats were anesthetized and a 3-mm superficial keratectomy was performed. The eyes were allowed to heal from 4 hours to 8 weeks and the rate of epithelial wound closure was determined. To examine the restoration of the barrier function, EZ-Link Sulfo-NHS-LC-Biotin (LC-Biotin) was a...

  8. Superficial siderosis and sudden sensorineural hearing loss: a case report and review of the literature.

    Science.gov (United States)

    Lee, Kirsti S V; Sritharan, Niranjan; Forrest, Allan

    2013-01-01

    This case report highlights an unusual case of sudden sensorineural hearing loss related to superficial siderosis (SS). Our patient had a craniotomy for medulloblastoma 23 years earlier, and this may represent a delayed complication related to this procedure. Magnetic resonance imaging (MRI) remains the key diagnostic investigation to illustrate the imaging features of superficial siderosis and exclude other pathologies. Increased awareness of progressive and sudden hearing complications caused by SS is important in the otolaryngologic community to expedite management and better counsel patients during the consent process.

  9. Managment of superficial infantile capillary hemangiomas with topical timolol maleate solution.

    Science.gov (United States)

    Rizvi, Syed Ali Raza; Yusuf, Faraz; Sharma, Rajeev; Rizvi, Syed Wajahat Ali

    2015-01-01

    Capillary hemangioma is the most common benign tumor of eyelids and orbit in children. Recently, a topical beta blocker has been reported as an effective treatment for superficial capillary hemangiomas. We present a case report of two children having large capillary hemangiomas who responded well to topical treatment by 0.5% timolol maleate solution. After 12 months of treatment, the lesion has significantly reduced in size, thickness, and color in both cases. Thus, we conclude that long-term use of topical 0.5% timolol maleate solution is safe and effective in treating superficial capillary hemangiomas.

  10. Fatigue Induced Alteration of the Superficial Strength Properties of 2024 Aluminum Alloy

    Institute of Scientific and Technical Information of China (English)

    K.-D. Bouzakis; I. Mirisidis; Sp. G. Pantelakis; A.N. Chamos

    2011-01-01

    aluminum alloy 2024 T3 specimens have been subjected to constant amplitude fatigue loading at R=0.1. During fatigue, an appreciable increase of the surface hardness of the material at the meso-scale can be observed and captured by means of nanoindentations. Surface hardness increases with increasing fatigue stress amplitude and advancing number of applied fatigue cycles. Observed increase of specimen surface hardening degree during fatigue causes an evolution of superficial mechanical strength properties of the alloy. Stress-strain curves associated with the evoluting superficial mechanical properties are derived, employing a developed finite element method (FEM)-supported evaluation procedure of nanoindentation experimental results.

  11. Superficial Ulnar Artery Associated with Anomalous Origin of the Common Interosseous and Ulnar Recurrent Arteries

    Science.gov (United States)

    Pamidi, Narendra; Nayak, Satheesha B; Jetti, Raghu; Thangarajan, Rajesh

    2016-01-01

    Occurrence of vascular variations in the upper limb is not uncommon and is well described in the medical literature. However, occurrence of superficial ulnar artery associated with unusual origin of the common interosseous and ulnar recurrent arteries is seldom reported in the literature. In the present case, we report the anomalous origin of common trunk of common interosseous, anterior and posterior ulnar recurrent arteries from the radial artery, in a male cadaver. Further, ulnar artery had presented superficial course. Knowledge of anomalous arterial pattern in the cubital fossa reported here is clinically important during the angiographic procedures and plastic surgeries. PMID:27437201

  12. El ciclo de las rocas. Alteración biológica a nivel superficial

    OpenAIRE

    2012-01-01

    En la actualidad, el objetivo de la Didáctica de las Ciencias en Secundaria y Bachillerato es el conseguir que sus alumnos adquieran una competencia científica, para lo cual, ha de acercarles a su entorno. El trabajo que nos ocupa trata del Ciclo de las rocas, centrándose en las alteraciones que sufren las mismas al ascender a la superficie, ya que dicha superficie compone el entorno natural más inmediato del alumnado. Entre las distintas alteraciones que suceden tras ese ascen...

  13. Influencia da irrigação por aspersão na cultura do morango (Fragaria Ananassa Dutch) na qualidade da agua do manancial

    OpenAIRE

    2003-01-01

    Resumo: O escoamento superfiCi8I nas propriedades agrIcOlas e mn serio problema na pOlUição -dos mananciaiS. -Geralmente, as propriedades adotam -o mstema -de irrigação por aspersão, ~endo que neste. o retomo de água é ainda maior. O escoamento superficial leva para o rio, defensivos agrícolas e também sedimentos, podendo alterar as características do mesmo. O presente trabalho teve por objetivo, detemiinar o grau de contribUição do excedente da agua de retomo da Irrigação -do moranao na pol...

  14. Evaluation of natural radioactivity in superficial and underground drinking water, from the Caetite region, BA; Avaliacao da radioatividade natural em aguas potaveis, de superficie e subterraneas da regiao de Caetite, BA

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Luciana Sousa

    2011-07-01

    Brazil has the seventh greatest geological uranium reserve in the world with approximately 310 thousand tons. The Lagoa Real Uranium Province, in the region of Caetite and Lagoa Real, situated in South Center Bahia, is considered the most important monomineralic province in Brazil. Urban population who lives in the uranium district in the cities of Caetite, Lagoa Real and Livramento de Nossa Senhora uses drinking water originated from public supply. In the rural area, characterized by frequent draughts, residents receive water from digged and drilled wells and from small dams and reservoirs, as well, which are supplied by the rains. This work determined the levels of total alpha and beta radioactivity and the uranium concentrations in several kinds of water consumed by urban and rural population from the Lagoa Real Uranium Province. Total {alpha} and {beta} activities were determined with a low-level gas flow proportional detector. The uranium concentrations were determined with an inductive coupled plasma-mass spectrometer (ICP-MS). The results obtained were confronted with the latest World Health Organization's recommendations from 2011, the ordinance number 2914 of December 12 2011 from the Health Ministry and CONAMA's resolutions. Natural radiation levels varied from 0,0041 {+-} 0,0004 Bq.L{sup -1} to 0,80 {+-} 0,04 Bq.L{sup -1} for total alpha activity and from 0,045 {+-} 0,003 to 3,00 {+-} 0,2 Bq.L{sup -1} for total beta activity. Having the WHO and the HM as parameter, just two underground water samples, one located in the city of Lagoa Real and the other in the city of Caetite presented total alpha concentration above the value of 0,5 Bq.L{sup -1} described in its recommendations, 0,80 {+-} 0,040 Bq.L{sup -1} and 0,57 {+-} 0,03 Bq.L{sup -1} respectively. For total beta three samples presented radioactivity levels above the 1 Bq.L{sup -1} limit recommended by the WHO and established by the Health Ministry; 3,00 {+-} 0,2 Bq.L{sup -1}; 1,63 {+-} 0,13 Bq.L{sup -1} and 1,19 {+-} 0,07 Bq.L{sup -1}., all of them situated in the Lagoa Real town. Two samples of underground water from Caetite presented uranium concentrations above the value of 15 {mu}g.L{sup -1} determined by CONAMA, 20,3 {+-} 0,3 {mu}g.L{sup -1} and 17,1{+-} 0,3 {mu}g.L{sup -1}. In Lagoa Real one sample presented uranium levels six times over the limit established by the Environment National Council 89,5 {+-} 1,5 {mu}g.L{sup -1}. In 2004 the World Health Organization established in its recommendations the 15 {mu}g.L{sup -1} limit as the maximum uranium concentration in drinking water. In 2011 the WHO increased that limit to 30 {mu}g.L{sup -1}. Taking into account the current WHO recommendations only the concentration of one water sample presented uranium levels above the recommended, 89,5 {+-} 1,5 {mu}g.L{sup -1} in Lagoa Real. (author)

  15. Las superficies especiales de manejo de presión en la prevención y tratamiento las úlceras por presión. Revisión de la literatura

    OpenAIRE

    Herrero Boil, Laura

    2015-01-01

    Introducción: Las superficies especiales de manejo de presión (SEMP) son unos dispositivos que permiten la redistribución de la presión y por tanto el alivio de la misma en las personas que presentan ulceras por presión o tienen riesgo de padecerlas. Objetivo: Analizar la eficacia del uso de SEMP en la prevención y el tratamiento en pacientes con UPP o con riesgo de padecerlas, a través de lo publicado. Metodología: Revisión de la literatura encontrada entre el 2005 al 2015 en las bases de da...

  16. Efeito do sistema de acabamento e polimento na rugosidade superficial e formação in situ de biofilme dentário inicial em cerâmica feldspática micro-particulada

    OpenAIRE

    2008-01-01

    O objetivo do presente estudo foi avaliar uma cerâmica feldspática micro-particulada quanto à rugosidade superficial, hidrofobicidade e formação in situ do biofilme dentário. Amostras padronizadas da cerâmica foram confeccionadas e divididas em 4 grupos conforme o sistema de acabamento e polimento: glaze (G1); glaze e broca diamantada (G2); glaze, broca diamantada e pontas de borracha (G3); glaze, broca diamantada, ponta de borracha e disco de feltro impregnado com pasta diamantada (G4). Rugo...

  17. Las superficies especiales de manejo de presión en la prevención y tratamiento las úlceras por presión. Revisión de la literatura

    OpenAIRE

    Herrero Boil, Laura

    2015-01-01

    Introducción: Las superficies especiales de manejo de presión (SEMP) son unos dispositivos que permiten la redistribución de la presión y por tanto el alivio de la misma en las personas que presentan ulceras por presión o tienen riesgo de padecerlas. Objetivo: Analizar la eficacia del uso de SEMP en la prevención y el tratamiento en pacientes con UPP o con riesgo de padecerlas, a través de lo publicado. Metodología: Revisión de la literatura encontrada entre el 2005 al 2015 en las bases de da...

  18. Abordagem profunda e abordagem superficial à aprendizagem: diferentes perspectivas do rendimento escolar Deep and surface approach to learning: different perspectives about academic achievement

    Directory of Open Access Journals (Sweden)

    Cristiano Mauro Assis Gomes

    2011-01-01

    Full Text Available O presente estudo investiga a relação entre a abordagem superficial e a abordagem profunda à aprendizagem na explicação do rendimento escolar. Algumas questões são delineadas buscando verificar o papel de cada uma das abordagens na proficiência escolar em séries distintas. Foram analisados dados de 684 estudantes da sexta série do ensino fundamental à terceira série do ensino médio de uma escola particular de Belo Horizonte, Minas Gerais. Foi delineado um modelo para comparação das séries escolares, através da modelagem por equação estrutural. O modelo desenhado apresentou bom grau de ajuste (c²=427,12; gl=182; CFI=0,95; RMSEA=0,04 para a amostra completa e para cada série escolar. Os resultados mostram que há uma participação distinta da abordagem superficial e da abordagem profunda no desempenho escolar nas diferentes séries. São discutidas implicações dos resultados para a teoria das abordagens.This study investigates the relationship between deep and surface approach to learning in explaining academic achievement. Some questions are outlined aiming to verify the role of each approach in student's proficiency in different grades. Data from 684 students from junior high school (6th year to high school (12th year of a private school in Belo Horizonte, Minas Gerais, were analyzed. A model was designed to compare the grades through structural equation modeling. The designed model showed a good fit (c² = 427.12; df = 182; CFI = .95, RMSEA = .04 for the full sample and for each grade. The results show that there is a distinct contribution of both approaches in academic achievement in the different grades. Further implications to the learning approach theory will be discussed.

  19. Anomalous superficial radial nerve: a patient with probable autosomal dominant inheritance of the anomaly.

    Science.gov (United States)

    Kuruvilla, Abraham; Laaksonen, Satu; Falck, Björn

    2002-11-01

    The sensory symptoms due to lesions of the superficial branch of the radial nerve are usually limited to the dorsolateral area of the hand. We describe a 40-year-old woman who presented with numbness of the dorsomedial aspect of the right hand following arthroplasty of the wrist. Clinically, the sensory loss suggested a lesion of the dorsal branch of the ulnar nerve. However, nerve conduction studies showed that the sensory loss was due to a lesion of a branch of the superficial branch of the radial nerve. The patient had bilateral, anomalous innervation of the dorsum of the hand-the dorsal branch of the ulnar nerve could not be demonstrated with nerve conduction techniques and the superficial branch of the radial nerve innervated most of the dorsum of the hand. Antidromic stimulation of the dorsal branch of the ulnar nerve and superficial branch of the radial nerve with paired surface recording of sensory nerve action potentials from the dorsolateral (radial side) and dorsomedial (ulnar side) hand is useful for evaluating this anomaly. Our patient had two children, one of them with a similar anomaly. This suggests an autosomal dominant inheritance of the anomaly.

  20. Percutaneous transluminal angioplasty of the superficial femoral artery by retrograde catheterization via the popliteal artery

    DEFF Research Database (Denmark)

    Tønnesen, K H; Sager, P; Karle, A;

    1988-01-01

    We report the results of 50 angioplasty procedures via the popliteal artery. A 3-year follow-up including control of blood pressures at ankle and toe levels show results comparable to reports in the literature. This new approach for angioplasty of the superficial femoral artery and eventually...

  1. [Species distribution and antifungal susceptibility of Candida spp. causing superficial mycosis. Coro, Falcon state, Venezuela].

    Science.gov (United States)

    Saúl-García, Yotsabeth; Humbría-García, Leyla; Hernández-Valles, Rosaura

    2015-09-01

    Candida species other than C. albicans are often described as causative agents of superficial mycosis and are more resistant to treatment with azoles. In order to determine the distribution of species and in vitro antifungal susceptibility of Candida spp., one ambispective study, which analyzed 18 yeast isolates obtained from samples from patients diagnosed with superficial mycosis, was performed. Taxonomic identification was performed by macroscopic visualization of the growth characteristics in chromogenic agar and by conventional methods. The susceptibility to fluconazole and voriconazole was evaluated by the disc diffusion method. Most of the isolates (88.8%), came from nail samples. C. parapsilosis was the most common species, followed by C. tropicalis, C. albicans and C. krusei, which confirmed the prevalence of non-albicans species as a cause of superficial mycoses. The pattern of susceptibility to fluconazole and voriconazole was similar: all isolates of C. parapsilosis and C. albicans were susceptible, while 83.3% of C. tropicalis showed sensitivity to both antifungals. C. krusei, fluconazole-resistant species showed intermediate susceptibility io voriconazole. The use of chromogenic agar allowed to detect mixed infections in nail samples, involving Candida spp. and C. tropicalis in one case, the latter with resistance to both fluconazole and voriconazole. The results demonstrate the importance of species identification and susceptibility testing to avoid therapeutic failures in superficial mycoses.

  2. Prognostic value of p53 for high risk superficial bladder cancer with long-term followup.

    NARCIS (Netherlands)

    Moonen, P.M.J.; Balken-Ory, B. van; Kiemeney, L.A.L.M.; Schalken, J.A.; Witjes, J.A.

    2007-01-01

    PURPOSE: The risk of muscle invasive disease in a high risk patient with superficial bladder cancer is up to 50%. Identifying patients at risk for progression remains an unsolved problem. A suggested prognosticator is mutations in the p53 tumor suppressor gene. We determined the value of p53 mutatio

  3. Mr Marty's muddle: a superficial and selective case for euthanasia in Europe

    Science.gov (United States)

    Keown, J

    2006-01-01

    In April 2004 the Parliamentary Assembly of the Council of Europe debated a report from its Social, Health and Family Affairs Committee (the Marty Report), which questioned the Council of Europe's opposition to legalising euthanasia. This article exposes the Report's flaws, not least its superficiality and selectivity. PMID:16373521

  4. Microcosmic analysis of ductile shearing zones of coal seams of brittle deformation domain in superficial lithosphere

    Institute of Scientific and Technical Information of China (English)

    JU; Yiwen; WANG; Guiliang; JIANG; Bo; HOU; Quanlin

    2004-01-01

    The ductile shearing zones of coal seams in a brittle deformation domain in superficial lithosphere are put forward based on the study on bedding shearing and ductile rheology of coal seams. The macrocosmic and microcosmic characteristics include wrinkle fold, mymonitized zones and ductile planar structure of coal seams, etc., while the microcosmic characteristics may also include different optic-axis fabrics and the anisotropy of vitrinite reflectance as well as the change of chemical structure and organic geochemistry components. The forming mechanism is analyzed and the strain environment of ductile shearing zones of coal seams discussed. The result indicates that, in the superficial brittle deformation domain, the coal seams are easy to be deformed, resulting in not only brittle deformation but also ductile shearing deformation under the action of force. Because of simple shearing stress, the interlayer gliding or ductile rheology may take place between coal seams and wall rocks. Therefore, many ductile shearing zones come into being in superficial lithosphere (<5 km). The research on ductile shearing zone of brittle deformation domain in superficial lithosphere is significant not only theoretically for the study of ductile shearing and ductile rheology of the lithosphere but also practically for the structural movement of coal seams, the formation and accumulation of coal-bed methane, and the prevention and harness of gas burst in coal mine.

  5. Can Young Children Distinguish Abstract Expressionist Art from Superficially Similar Works by Preschoolers and Animals?

    Science.gov (United States)

    Nissel, Jenny; Hawley-Dolan, Angelina; Winner, Ellen

    2016-01-01

    While it is sometimes claimed that abstract art requires little skill and is indistinguishable from the scribbles of young children, recent research has shown that even adults with no training in art can distinguish works by abstract expressionists from superficially similar works by children and even elephants, monkeys, and apes (Hawley-Dolan…

  6. Automatic and Deliberate Affective Associations with Sexual Stimuli in Women with Superficial Dyspareunia

    NARCIS (Netherlands)

    Brauer, M.; de Jong, P.J.; Huijding, J.; Laan, E.; ter Kuile, M.M.

    2009-01-01

    Current views suggest that in women with superficial dyspareunia the prospect of penile-vaginal intercourse automatically activates fear-related associations. The automatic activation of negative associations is assumed to interfere with the development of sexual arousal. In turn, this may further a

  7. Education and Intergroup Attitudes: Moral Enlightenment, Superficial Democratic Commitment, or Ideological Refinement?

    Science.gov (United States)

    Jackman, Mary R.; Muha, Michael J.

    1984-01-01

    Provides evidence challenging the notions that education produces liberation from intergroup negativism or a superficial democratic commitment. Instead, suggests that the well educated are but one step ahead of their peers in developing a defense of their interests resting on qualification, individualism, obfuscation, and symbolic concessions.…

  8. The defence architecture of the superficial cells of the oral mucosa

    NARCIS (Netherlands)

    P. Asikainen; T.J. Ruotsalainen; J.J.W. Mikkonen; A. Koistinen; C. ten Bruggenkate; A.M. Kullaa

    2012-01-01

    The oral epithelium together with the saliva and its components forms a complex structure which is the first line of defence in the oral cavity. The surface of superficial cells of the oral epithelium contains ridge-like folds, microplicae (MPL), which are typical of the surfaces of areas covered wi

  9. Evaluation of superficial microhardness in dental enamel with different eruptive ages

    Directory of Open Access Journals (Sweden)

    Dafna Geller Palti

    2008-12-01

    Full Text Available This study evaluated the superficial microhardness of enamel in teeth at different posteruptive ages (before eruption in the oral cavity, 2-3 years after eruption, 4-10 years after eruption and more than 10 years after eruption. The study sample was composed of 134 specimens of human enamel. One fragment of each tooth was obtained from the flattest central portion of the crown to produce specimens with 3 x 3 mm. The enamel blocks were minimally flattened out and polished in order to obtain a flat surface parallel to the base, which is fundamental for microhardness testing. Microhardness was measured with a microhardness tester and a Knoop diamond indenter, under a static load of 25 g applied for 5 seconds. Comparison between the superficial microhardness obtained for the different groups was performed by analysis of Student's t test. The results demonstrated that superficial microhardness values have a tendency to increase over the years, with statistically significant difference only between unerupted enamel and that with more than 10 years after eruption. According to the present conditions and methodology, it was concluded that there were differences between the superficial micro-hardness of specimens at different eruptive ages, revealing an increasing mineralization. However, this difference was significant only between unerupted specimens and those with more than 10 years after eruption.

  10. A prodrug approach to the use of coumarins as potential therapeutics for superficial mycoses.

    Directory of Open Access Journals (Sweden)

    Derry K Mercer

    Full Text Available Superficial mycoses are fungal infections of the outer layers of the skin, hair and nails that affect 20-25% of the world's population, with increasing incidence. Treatment of superficial mycoses, predominantly caused by dermatophytes, is by topical and/or oral regimens. New therapeutic options with improved efficacy and/or safety profiles are desirable. There is renewed interest in natural product-based antimicrobials as alternatives to conventional treatments, including the treatment of superficial mycoses. We investigated the potential of coumarins as dermatophyte-specific antifungal agents and describe for the first time their potential utility as topical antifungals for superficial mycoses using a prodrug approach. Here we demonstrate that an inactive coumarin glycone, esculin, is hydrolysed to the antifungal coumarin aglycone, esculetin by dermatophytes. Esculin is hydrolysed to esculetin β-glucosidases. We demonstrate that β-glucosidases are produced by dermatophytes as well as members of the dermal microbiota, and that this activity is sufficient to hydrolyse esculin to esculetin with concomitant antifungal activity. A β-glucosidase inhibitor (conduritol B epoxide, inhibited antifungal activity by preventing esculin hydrolysis. Esculin demonstrates good aqueous solubility (<6 g/l and could be readily formulated and delivered topically as an inactive prodrug in a water-based gel or cream. This work demonstrates proof-of-principle for a therapeutic application of glycosylated coumarins as inactive prodrugs that could be converted to an active antifungal in situ. It is anticipated that this approach will be applicable to other coumarin glycones.

  11. Superficial fascial system repair: an abdominoplasty technique to reduce local complications after caesarean delivery.

    Science.gov (United States)

    Al-Benna, Sammy; Al-Ajam, Yazan; Tzakas, Elias

    2009-05-01

    Abdominal incision complications are a major source of morbidity after caesarean delivery. Repair of the superficial fascial system may avert local complications after caesarean delivery by minimising tension to the skin and increasing the initial biomechanical strength of wound which has the potential to decrease early wound dehiscence and as a by-product correct suprapubic bulging.

  12. Thrombophlebitis of the penile superficial vein, penile mondor's disease: a case report

    Energy Technology Data Exchange (ETDEWEB)

    Park, Sang Hyun; Kim, Young Hwa; Kim, Doo Sang; Shin, Hyung Chul; Bae, Won Kyung; Kim, Il Young [Soonchunhyang University, Chunan (Korea, Republic of); Kim, Hyun Cheol [Kyung-Hee University, Seoul (Korea, Republic of)

    2007-07-15

    Mondor's disease is commonly known as thrombophlebitis of the superficial vein in the breast, and this disease occurs rarely in the penis. Despite extensive information about the clinical presentation and course of this disease, imaging findings for this disease are limited. We report gray scale and power Doppler sonographic findings of penile Mondor's disease.

  13. The analogy between dreams and the ancient art of memory is tempting but superficial.

    Science.gov (United States)

    Axmacher, Nikolai; Fell, Juergen

    2013-12-01

    Although the analogy between dreams and ancient mnemotechniques is tempting because they share several phenomenological characteristics, this analogy is superficial at a closer look. Unlike mneomotechnically encoded material, rapid eye movement (REM) dreams are inherently difficult to remember, do not usually allow conscious subsequent retrieval of all interconnected elements, and have been found to support subsequent episodic memory in only rare cases.

  14. Recent advances in high-throughput molecular marker identification for superficial and invasive bladder cancers

    DEFF Research Database (Denmark)

    Andersen, Lars Dyrskjøt; Zieger, Karsten; Ørntoft, Torben Falck

    2007-01-01

    individually contributed to the management of the disease. However, the development of high-throughput techniques for simultaneous assessment of a large number of markers has allowed classification of tumors into clinically relevant molecular subgroups beyond those possible by pathological classification. Here......, we review the recent advances in high-throughput molecular marker identification for superficial and invasive bladder cancers....

  15. Endoscopic Submucosal Dissection of Gastric Superficial Lesions: Predictors for Time of Procedure in a Portuguese Center

    Directory of Open Access Journals (Sweden)

    Francisco Ribeiro-Mourão

    2015-03-01

    Conclusion: The time of procedure of ESD for gastric superficial lesions is influenced by size of lesion (>20 mm and location (upper third of stomach, which predict a time longer than 90 min. This can be useful for better management of workflow, operation, training of teams and anesthesic procedures.

  16. Removal of dissolved organic carbon in pilot wetlands of subsuperficial and superficial flows

    Directory of Open Access Journals (Sweden)

    Ruth M. Agudelo C

    2010-04-01

    Full Text Available Objective: to compare removal of dissolved organic carbon (d o c obtained with pilot wetlands of subsuperficial flow (p h s s and superficial flow (p h s, with Phragmites australis as treatment alternatives for domestic residual waters of small communities and rural areas. Methodology: an exploratory and experimental study was carried out adding 100,12 mg/L of dissolved organic carbon to synthetic water contaminated with Chlorpyrifos in order to feed the wetlands. A total amount of 20 samples were done, 16 of them in four experiments and the other ones in the intervals with no use of pesticides. Samples were taken on days 1, 4, 8, and 11 in the six wetlands, three of them subsuperficial, and three of them superficial. The main variable answer was dissolved organic carbon, measured in the organic carbon analyzer. Results: a high efficiency in the removal of d o c was obtained with the two types of wetlands: 92,3% with subsuperficial flow and 95,6% with superficial flow. Such a high removal was due to the interaction between plants, gravel and microorganisms. Conclusion: although in both types of wetlands the removal was high and similar, it is recommended to use those of subsuperficial flow because in the superficial ones algae and gelatinous bio-films are developed, which becomes favorable to the development of important epidemiologic vectors in terms of public health.

  17. Efficacy of a surgical scrub including 2% chlorhexidine acetate for canine superficial pyoderma.

    Science.gov (United States)

    Murayama, Nobuo; Nagata, Masahiko; Terada, Yuri; Shibata, Sanae; Fukata, Tsuneo

    2010-12-01

    The clinical efficacy of a surgical scrub containing 2% chlorhexidine acetate (2CA; Nolvasan® Surgical Scrub; Fort Dodge Animal Health, USA) was evaluated for the topical management of canine superficial pyoderma. The first study was a randomized, double-blind, controlled trial. The control was a shampoo containing 4% chlorhexidine gluconate (4CG; Skin Clinic Shampoo; CHD MEDICS, Goyang, Korea). Ten dogs with symmetrical lesions of canine superficial pyoderma were allocated to receive either 2CA or the control shampoo applied to either side of the body twice weekly for 1 week. Both the owners and the investigators subjectively scored skin lesions including pruritus, erythema, crusted papules and scales on a scale of 0-3. The 2CA and 4CG resulted in almost the same degree of improvement of skin lesions, and there were no significant differences between the two groups. The second study was an open trial of 2CA monotherapy in eight dogs with cefalexin-resistant Staphylococcus intermedius group-associated superficial pyoderma. The 2CA monotherapy was applied every 2 days for 2 weeks. Five dogs improved with 2CA monotherapy, one partially improved and two did not. No adverse reactions were seen in either trial. This suggests that a 2CA surgical scrub could be a useful and safe topical adjunct therapy for dogs with superficial pyoderma involving cefalexin-resistant Staphylococcus intermedius group.

  18. Oxidized cellulose dressings for persistent bleeding from a superficial malignant tumor.

    Science.gov (United States)

    Lagman, Ruth; Walsh, Declan; Day, Kathy

    2002-01-01

    Persistent bleeding from superficial malignant tumors, although uncommon, can be a major and distressing problem. Management includes frequent skilled dressing changes, correction of clotting abnormalities, and maintaining blood volume by repeated transfusions. We report a case where application of oxidized regenerated cellulose surgical dressing appeared to contribute to successful hemostasis.

  19. The flexural stiffness of superficial neuromasts in the zebrafish (Danio rerio) lateral line

    NARCIS (Netherlands)

    McHenry, Matthew J.; van Netten, Sietse M.

    2007-01-01

    Superficial neuromasts are structures that detect water flow on the surface of the body of fish and amphibians. As a component of the lateral line system, these receptors are distributed along the body, where they sense flow patterns that mediate a wide variety of behaviors. Their ability to detect

  20. Superficial shoulder muscle co-activations during lifting tasks: Influence of lifting height, weight and phase.

    Science.gov (United States)

    Blache, Y; Dal Maso, F; Desmoulins, L; Plamondon, A; Begon, M

    2015-04-01

    This study aimed to assess the level of co-activation of the superficial shoulder muscles during lifting movement. Boxes containing three different loads (6, 12, and 18 kg) were lifted by fourteen subjects from the waist to shoulder or eye level. The 3D kinematics and electromyograms of the three deltoids, latissimus dorsi and pectoralis major were recorded. A musculoskeletal model was used to determine direction of the moment arm of these muscles. Finally an index of muscle co-activation named the muscle focus was used to evaluate the effects of lifting height, weight lifted and phase (pulling, lifting and dropping phases) on superficial shoulder muscle coactivation. The muscle focus was lower (more co-contraction) during the dropping phase compared to the two other phases (-13%, pmuscle activations and by a change in the direction of the muscle moment arm as a function of glenohumeral joint position. Consequently, the function of the shoulder superficial muscles varied with respect to the glenohumeral joint position. To increase the superficial muscle coactivation during the dropping phase may be a solution to increase glenohumeral joint stiffness. Copyright © 2014 Elsevier Ltd. All rights reserved.

  1. Patient Perception of Imiquimod Treatment for Actinic Keratosis and Superficial Basal Cell Carcinoma in 202 Patients

    NARCIS (Netherlands)

    Waalboer-Spuij, Rick; Holterhues, Cynthia; van Hattem, Simone; Schuttelaar, Marie Louise A.; Gaastra, Menno T. W.; Kuijpers, Danielle I. M.; Hollestein, Loes M.; Nijsten, Tamar E. C.

    2015-01-01

    Objective: To document the impact on patient-reported outcomes and health-related quality of life (HRQoL) of treatment with imiquimod cream in patients with actinic keratosis (AK) and superficial basal cell carcinoma (sBCC). Methods: This open-label, multicenter study included AK and sBCC patients

  2. Patient Perception of Imiquimod Treatment for Actinic Keratosis and Superficial Basal Cell Carcinoma in 202 Patients

    NARCIS (Netherlands)

    Waalboer-Spuij, Rick; Holterhues, Cynthia; van Hattem, Simone; Schuttelaar, Marie Louise A.; Gaastra, Menno T. W.; Kuijpers, Danielle I. M.; Hollestein, Loes M.; Nijsten, Tamar E. C.

    2015-01-01

    Objective: To document the impact on patient-reported outcomes and health-related quality of life (HRQoL) of treatment with imiquimod cream in patients with actinic keratosis (AK) and superficial basal cell carcinoma (sBCC). Methods: This open-label, multicenter study included AK and sBCC patients e

  3. Effects of Appraisal of Sexual Stimuli on Sexual Arousal in Women with and Without Superficial Dyspareunia

    NARCIS (Netherlands)

    M. Brauer; M.M. ter Kuile; E. Laan

    2009-01-01

    This study examined the effects of appraisal of sexual stimuli on sexual arousal in women with superficial dyspareunia (n = 50) and sexually functional women (n = 25). To elicit different appraisals of an erotic film fragment, participants received an instruction prior to viewing it, with a focus on

  4. Protocolo nacional de monitoreo de la calidad de los en cuerpos naturales de agua superficial

    OpenAIRE

    Autoridad Nacional del Agua. Dirección de Gestión de Calidad de los Recursos Hídricos

    2011-01-01

    Estandariza la metodología para el desarrollo del monitoreo de la calidad de los recursos hídricos en los cuerpos naturales de agua superficial, asimismo pretende convertirse en un instrumento de gestión en el desarrollo del Plan Nacional de Vigilancia de la Calidad de Agua en el Perú.

  5. Química superficial de los materiales de carbón

    Directory of Open Access Journals (Sweden)

    F.J. Maldonado-Hódar

    2011-06-01

    Full Text Available La superficie del carbón no puede ser analizada de forma particularizada, sino como un promedio, dado por un lado la existencia simultánea de funciones distintas y por otro, que las características de dichas funciones dependen a su vez del entorno en que se encuentran.

  6. The flexural stiffness of superficial neuromasts in the zebrafish (Danio rerio) lateral line

    NARCIS (Netherlands)

    McHenry, Matthew J.; van Netten, Sietse M.

    2007-01-01

    Superficial neuromasts are structures that detect water flow on the surface of the body of fish and amphibians. As a component of the lateral line system, these receptors are distributed along the body, where they sense flow patterns that mediate a wide variety of behaviors. Their ability to detect

  7. Rapid differentiation of superficial urothelial cells after chitosan-induced desquamation.

    Science.gov (United States)

    Veranic, Peter; Erman, Andreja; Kerec-Kos, Mojca; Bogataj, Marija; Mrhar, Ales; Jezernik, Kristijan

    2009-01-01

    Superficial cell desquamation followed by differentiation of newly exposed superficial cells induces regeneration of the urinary bladder epithelium, urothelium. In the present work, chitosan was evaluated as a new inducer of urothelial cell desquamation, in order to study the regeneration of mouse urothelial cells in vivo. Intravesical application of chitosan dispersion caused complete removal of only the superficial layer of cells within 20 min of treatment. Differentiation of the new superficial layer was followed by the appearance and distribution of three urothelial differentiation markers, tight junction protein ZO1, cytokeratin 20 and the maturation of the apical plasma membrane. The arrangement of ZO1 into continuous lines in individual cells of the intermediate layer was already found after 10 min of chitosan application, when desquamation had just started. The appearance of the apical membrane changed from microvillar to typically scalloped within 20 min of regeneration, while complete arrangement of the cytokeratin 20 network took 60 min. These findings provide a new perspective on the rate of the differentiation process in the urothelium and make chitosan a new and a very controllable tool for studies on urothelial regeneration.

  8. Holmium laser fulguration of superficial urothelial carcinoma of the pendulous urethra

    Directory of Open Access Journals (Sweden)

    Michael A Liss

    2012-01-01

    Full Text Available Urothelial carcinoma may occur anywhere in the urinary tract including the pendulous urethra. To prevent urethral stricture after resection and monopolor fulguration we describe the use of the holmium laser to fulgurate recurrent pTa UC from the urethra. The surgical approach was staged and provided excellent long term results for management of superficial UC.

  9. LigaSure small jaws versus cold knife dissection in superficial parotidectomy

    DEFF Research Database (Denmark)

    Hahn, Christoffer Holst; Sørensen, Christian Hjort

    2013-01-01

    The objective of this study was to evaluate the use of LigaSure small jaws in superficial parotidectomy for blood loss, operative time and facial nerve function. This was a prospective non-randomized study of 35 patients with a benign parotid tumor. Sixteen patients had LigaSure small jaws paroti...

  10. Primary temporal region squamous cell carcinoma diagnosed by a superficial temporal artery biopsy

    DEFF Research Database (Denmark)

    Andersen, S A W; Kiss, K

    2015-01-01

    BACKGROUND: Superficial temporal artery biopsy is a frequent procedure performed in the diagnosis of giant cell arteritis. METHODS AND RESULTS: An otherwise healthy 69-year-old man presented with 2months complaint of right temporal region pain. Giant cell arteritis was suspected and a temporal ar...

  11. Spatial distributions of hemoglobin signals from superficial layers in the forehead during a verbal-fluency task

    Science.gov (United States)

    Kohno, Satoru; Hoshi, Yoko

    2016-06-01

    Functional near-infrared spectroscopy (fNIRS) signals originate in hemoglobin changes in both the superficial layer of the head and the brain. Under the assumption that the changes in the blood flow in the scalp are spatially homogeneous in the region of interest, a variety of methods for reducing the superficial signals has been proposed. To clarify the spatial distributions of the superficial signals, the superficial signals from the forehead during a verbal-fluency task were investigated by using ten source-detector pairs separated by 5 mm, whereas fNIRS signals were also detected from two source-detector pairs separated by 30 mm. The fNIRS signals strongly correlated with the superficial signals at some channels on the forehead. Hierarchical cluster analysis was performed on the temporal cross-correlation coefficients for two channels of both the NIRS signals, and the analysis results demonstrate spatially heterogeneous distributions and network structures of the superficial signals from within the forehead. The results also show that the assumption stated above is invalid for homogeneous superficial signals from any region of interest of 15-mm diameter or larger on the forehead. They also suggest that the spatially heterogeneous distributions may be attributable to vascular networks, including supraorbital, supratrochlear, and superficial temporal vessels.

  12. Extracción Automática de Edificios a partir de Modelos Digitales de Superficies : el sistema BUILDING

    Directory of Open Access Journals (Sweden)

    José Luis Pérez García

    2008-01-01

    Full Text Available En este trabajo se plantea una aproximación al complicado problema de la localización, extracción y representación vectorial de manera semiautomática de edificaciones situadas en zonas urbanas o suburbanas, a partir del análisis de modelos de superficie, lo suficientemente densos como para representar la escena urbana, y de imágenes aéreas orientadas de la zona de estudio. Elmétodo propuesto utiliza como información de partida losmodelos digitales de superficie generados de forma automáticamediante técnicas fotogramétricas o de sistemas LIDAR con una densidad demalla elevada, así como de un modelo previo de forma geométrica de los edificios existentes en la zona. Estos modelos de superficie, serán tratados mediante operaciones de morfología matemática para la diferenciar los puntos que pertenecen al terreno propiamente dicho, de los pertenecientes a objetos situados sobre él, así como por momentos geométricos invariantes para obtener el rectángulo representativo del objeto localizado. Una vez localizados los posibles edificios, así como los rectángulos que representan a cada uno de ellos, se procederá a refinar estos resultados trabajando sobre los fotogramas aéreos correspondientes. Mediante análisis digital de imágenes se realizará una extracción de bordes y con la ayuda de la transformada de Hough se obtendrá el rectángulo principal de la imagen. Este rectángulo junto con la altura delmismo extraída en la fase anterior, formará el prisma de base rectangular que representará al edificio. Todas estas operaciones han sido implementadas en un sistema de desarrollo propio, el sistema BUILDING, cuyos resultados iniciales son presentados en este trabajo para poner de manifiesto las posibilidades y problemas de la metodología propuesta.In this work we present an approximation to the complicated problem of the semiautomatic location, extraction and vector representation of buildings. This approximation is based on

  13. El Legado de Albert Schweitzer - RESUMEN DE VOCABULARIO DE LA SENSIBILIDAD PROFUNDA Y SUPERFICIAL

    Directory of Open Access Journals (Sweden)

    Alberto Cardenas Escovar

    1990-08-01

    , discriminativa y cortical. La primera comprende las siguientes: a táctil; b térmica, y c dolorosa. A la profunda consciente o balreslesia corresponden: a el sentido muscular que nos da cuenta de las actitudes activas o pasivas; b la sensibilidad de los movimientos; c la sensibilidad ósea; d la propiocepcián que nos permite apreciar la posición, el equilibrio y sus cambios, especialmente en la locomoción; e la sensibilidad vibratoria o palestesia; f la eSlereognosia o percepción de la forma de los objetos. La sensibilidad profunda inconsciente comprende: a el tono muscular; b la coordinación, y c la estabilidad.

    La sensibilidad superficial se transmite de los órganos correspondientes de la piel o papilas a unas primeras neuronas, cuyas células se encuentran en los ganglios de las raíces posteriores de los nervios medulares. Al penetrar a la médula espinal, las fibras se subdividen así: las que conducen las sensibilidades dolorosa y térmica y parte de la táctil hacen sinapsis en los cuernos posteriores con una segunda neurona sensitiva, que cruza la médula y va hasta el tálamo, integrado por tres núcleos voluminosos de sustancia gris: uno interno, otro externo y un tercero medio anterior, los cuales limitan lateralmente con el ventrículo medio y forman el piso de los laterales.

    Las fibras que conducen la sensibilidad profunda y otra, parte de la táctil, ascienden por los cordones posteriores homolaterales de la médula hasta el bulbo raquídeo, y terminan allí en los núcleos de Goll y Burdach, donde hacen sinapsis con una segunda neurona que pasa al lado opuesto del órgano y asciende hasta el tálamo. La tercera neurona que empieza en este último lleva todas las formas de sensibilidad descrita a la corteza cerebral, lóbulo parietal, circunvalación postrolándica. Es allí donde la información discrimina las primeras formas de sensibilidad y las integra en complejos, merced a lo cual identificamos el Sitio de contacto, diferenciamos entre dos

  14. Investigation of the behaviour of a LILW superficial repository under aircraft impact

    Energy Technology Data Exchange (ETDEWEB)

    Lo Frano, Rosa, E-mail: rosa.lofrano@ing.unipi.it; Stefanini, Lorenzo

    2016-04-15

    Highlights: • Safety assessment of a LILW superficial repository. • Investigation of the consequences of an aircraft impact with fuel burning. • Experimental material properties. • Numerical simulation of aircraft impact with fuel burning accident by MSC.MARC{sup ©} code. • Demonstration that the overall integrity resulted is guaranteed. - Abstract: Safety and security are the two fundamental aspects to guarantee when designing a LILW superficial repository. Because of its safety concern, we have to prove, and build confidence in, the primary and secondary consequences of the crashing will be acceptable. These goals are obtained generally by means of safety assessment supported by calculations. This study is intended to investigate the performance of a superficial repository subjected to aircraft impact and fuel burning. To the purpose a superficial repository similar to that of El Cabril has been considered. Moreover to be confident the facility is safe and that the consequences of such a type of accident on the environment and humans are negligible, an appropriate safety assessment was carried out. The potential damage that aircraft impact could bring into the repository has been therefore analysed and discussed. To attain the intent load functions, calculated according to the Riera approach, and the maximum temperature reached by fuel during its combustion have been considered. FEM (thermo-mechanical) simulations have been done, by MSC{sup ©} Marc code, assuming damaging phenomena of concrete and material properties variation with the temperature. The obtained results showed that an empty superficial repository with a wall thickness, ranging from 0.7 to 1 m, is not sufficient to avoid penetration. Nevertheless even in presence of a reduced strength and of (cone) cracking and plugging, the overall integrity resulted guaranteed.

  15. Use of superficial peroneal nerve graft for treating peripheral nerve injuries

    Directory of Open Access Journals (Sweden)

    Samuel Ribak

    2016-02-01

    Full Text Available ABSTRACT OBJECTIVE: To evaluate the clinical results from treating chronic peripheral nerve injuries using the superficial peroneal nerve as a graft donor source. METHODS: This was a study on eleven patients with peripheral nerve injuries in the upper limbs that were treated with grafts from the sensitive branch of the superficial peroneal nerve. The mean time interval between the dates of the injury and surgery was 93 days. The ulnar nerve was injured in eight cases and the median nerve in six. There were three cases of injury to both nerves. In the surgery, a longitudinal incision was made on the anterolateral face of the ankle, thus viewing the superficial peroneal nerve, which was located anteriorly to the extensor digitorum longus muscle. Proximally, the deep fascia between the extensor digitorum longus and the peroneal longus muscles was dissected. Next, the motor branch of the short peroneal muscle (one of the branches of the superficial peroneal nerve was identified. The proximal limit of the sensitive branch was found at this point. RESULTS: The average space between the nerve stumps was 3.8 cm. The average length of the grafts was 16.44 cm. The number of segments used was two to four cables. In evaluating the recovery of sensitivity, 27.2% evolved to S2+, 54.5% to S3 and 18.1% to S3+. Regarding motor recovery, 72.7% presented grade 4 and 27.2% grade 3. There was no motor deficit in the donor area. A sensitive deficit in the lateral dorsal region of the ankle and the dorsal region of the foot was observed. None of the patients presented complaints in relation to walking. CONCLUSIONS: Use of the superficial peroneal nerve as a graft source for treating peripheral nerve injuries is safe and provides good clinical results similar to those from other nerve graft sources.

  16. Aplicação superficial de calcário e diferentes resíduos em soja cultivada no sistema plantio direto Surface application of limestone and different residues on soybean grown in no-till system

    Directory of Open Access Journals (Sweden)

    Juliano Corulli Corrêa

    2009-01-01

    Full Text Available A prática da correção da acidez do solo pela aplicação superficial de corretivos sobre a palha no sistema plantio direto se restringe ao calcário, não havendo maiores estudos em relação à escória de aciaria, lama cal e lodo de esgoto centrifugado. O objetivo do trabalho foi avaliar os índices de acidez do solo e a produtividade da soja em função da aplicação superficial de lodo de esgoto centrifugado, lama cal, escória de aciaria e calcário dolomítico. O trabalho foi desenvolvido em Latossolo Vermelho distrófico, durante os anos agrícolas de 2002 a 2005, sob sistema plantio direto. Os tratamentos constituíram da aplicação superficial de escória de aciaria (E, lama cal (Lcal, lodo de esgoto centrifugado (LC, calcário dolomítico e sem aplicação de corretivo, em delineamento em blocos ao acaso, com quatro repetições. A aplicação superficial de escória de aciaria, lama cal e lodo de esgoto centrifugado permite a correção da acidez do solo, o deslocamento do Ca2+, o aumento da saturação por bases e redução do Al3+ até 40 cm, e para o calcário, até 20 cm, fatores que condicionaram o aumento da produtividade da soja para os tratamentos LC, E e Lcal em 2003/2004 e 2004/2005 e para LC e E em 2002/2003 no sistema plantio direto.The practice of correcting soil acidity by surface application of pH-correcting materials on crop residues in the no-till system is restricted to limestone. No further studies are available on the use of steel slag, lime mud, and centrifuged sewage sludge. The objective of this study was to evaluate soil acidity and yield of soybean as a function of surface application of centrifuged sewage sludge, lime mud, steel slag, and dolomitic limestone. The study was conducted on a dystrophic Clayey Rhodic Hapludox soil, during the 2002_2005 cropping seasons, under notill system. Treatments consisted on surface application of slag _ E, lime mud _ Lcal, centrifuged sewage sludge _ LC, dolomitic

  17. Prevalência de insuficiência venosa superficial dos membros inferiores em pacientes obesos e não obesos Prevalence of lower limbs superficial venous insufficiency in obese and non-obese patients

    Directory of Open Access Journals (Sweden)

    Amélia Cristina Seidel

    2011-06-01

    Full Text Available CONTEXTO: A insuficiência venosa crônica dos membros inferiores é a mais prevalente das doenças venosas. Muito se discute sobre sua etiologia e fisiopatologia. Vários fatores de risco têm sido associados ao seu desenvolvimento, como idade, sexo, dieta, entre outros. A obesidade é um problema de saúde pública e sua incidência tem aumentado. O ecocolor Doppler é um método útil para avaliar a presença de refluxo e/ou obstrução no sistema venoso. OBJETIVO: Comparar a prevalência de insuficiência venosa superficial e sintomas associados em pacientes obesos e não obesos. MÉTODOS: Após pesagem, medição da estatura e exame físico, os pacientes com índice de massa corpórea (IMC 35 kg/m² e queixas compatíveis com insuficiência venosa foram distribuídos nos grupos I e II, respectivamente. Foram submetidos à realização do ecocolor Doppler dos membros inferiores para avaliação da presença ou não de refluxo. RESULTADOS: Foram examinados 311 membros de 168 pacientes com 25-72 anos. Para análise estatística, foram consideradas queixas de varizes, dor, edema, dermatite, eczema e úlcera, associados ou não. Foi obtido um total de 109 e 104 membros com varizes nos grupos I e II, respectivamente. Queixas de varizes visíveis (pBACKGROUND: Chronic venous insufficiency of the lower limbs is the most prevalent venous disease. There is an ongoing debate about its etiology and pathophysiology. Several risk factors have been associated with its development, such as age, sex and diet. Obesity is a public health problem and its prevalence has been increasing. Color Doppler ultrasonography is a useful method to evaluate the presence of reflux and/or obstruction of the venous system. OBJECTIVE: To compare the prevalence of superficial venous insufficiency and associated symptoms in obese and non-obese patients. METHODS: After weighing, height measurement and physical examination, patients with body mass index (BMI 35 kg/m² and

  18. Evolução da Atmosfera nos Planetas Interiores

    OpenAIRE

    Monteiro, Graça Maria Viana

    2001-01-01

    Os planetas do nosso Sistema Solar são muito diferentes uns dos outros no seu aspecto exterior, tamanho e temperatura superficial. Mas, sendo a planetologia uma ciência em expansão, muitas das aparentes diferenças revelam-se, como, caminhos evolutivos divergentes. Neste trabalho é explorada essa evolução no que respeita às atmosferas dos planetas interiores, em especial de Vénus, da Terra e de Marte. Apesar de, possivelmente, os planetas interiores terem iniciado os seus percursos atmosférico...

  19. Produção de forrageiras de inverno em diferentes espaçamentos entre drenos superficiais sob pisoteio animal em várzea Lowland winter species production under different distances between superficial drainage channels and animal load

    Directory of Open Access Journals (Sweden)

    Enio Marchezan

    1998-09-01

    Full Text Available O objetivo do trabalho foi avaliar o desenvolvimento de espécies forrageiras de inverno em diferentes espaçamentos entre drenos superficiais e efeito do pisoteio animal em propriedades físicas de solo de várzea, num Planossolo, em Santa Maria, RS, Brasil, 1996. Foi utilizado delineamento de blocos ao acaso, dispostos em parcelas subdivididas, com parcelas principais para os espaçamentos entre drenos (4, 8, 12 e 16m e subparcelas para as espécies de inverno, conforme segue: aveia (Avena strigosa, azevém (Lolium multiflorum, L. multiflorum + trevo branco (Trifolium repens, L. multiflorum + trevo vesiculoso (T. vesiculosum, L. multiflorum + comichão (Lotus corniculatus, L. multiflorum + serradela (Ornitophus micranthus. O comportamento das espécies de inverno nos diferentes espaçamentos entre drenos foi avaliado através de coletas de massa seca, realizadas de metro em metro do dreno até o centro da parcela. O pastejo teve início aos 75 dias após a emergência (DAE com carga animal adequada ao resíduo e peso vivo de 150 a 200kg/animal. Verificou-se que não houve diferença no desenvolvimento das espécies forrageiras quanto aos espaçamentos entre drenos superficiais. As propriedades físicas do solo foram influenciadas pelo pisoteio animal, ocorrendo aumento da densidade superficial do solo e diminuição da microporosidade, macroporosidade e porosidade total.The research evaluated the development of winter species under dijferent distances between superficial drainage channeis as well as the ejfect of animal stepping on the physical properties of an Albaqualf soil located in Santa Maria, Brazil 1996. The experimental design was a split piot, where the main plots were distances between drainage channeis, 4, 8, 12 and 16 meters and subplots were the winter species: Avena strigosa, Lolium multiflorum, L. multiflorum + Trifolium repens, L. multiflorum + T. vesiculosum, L. multiflorum + Lotus corniculatus, L. multiflorum + Ornitophus

  20. Escoamento superficial em Latossolo Amarelo distrófico típico sob diferentes agroecossistemas no nordeste paraense Runoff in Oxisol under different agroecosystems in the northeast part of Pará State

    Directory of Open Access Journals (Sweden)

    Cristiane F. G. da Costa

    2013-02-01

    Full Text Available Na bacia dos igarapés Timboteua e Buiuna, no Estado do Pará, avaliou-se a influência das mudanças de uso da terra e do manejo do solo sobre as taxas de escoamento superficial. Foram estabelecidas 18 parcelas experimentais (1 m² sendo três em cada um dos seis agroecossistemas avaliados, a saber: i Capoeira de 20 anos (CP; ii Sistema agroflorestal / derruba-e-queima (SQ; iii Sistema agroflorestal / corte-e-trituração (ST; iv Cultivo de mandioca / corte-e-trituração - Roça (RT; v Cultivo de mandioca / derruba-e-queima - Roça (RQ; vi Pastagem / derruba-e-queima (PQ. Adicionalmente foram instalados, na mesma localidade, dois pluviômetros e três coletores de água de chuva (CH para monitoramento da precipitação. Em 26 datas ao longo da estação chuvosa de 2010, foram coletadas 234 amostras, obtendo-se alta correlação entre volumes precipitado e escoado. O agroecossistema de Pastagem (PQ degradada apresentou o maior valor de 54,53% do total de escoamento superficial medido nesta pesquisa, e o SAF, que estava em recuperação de 7 anos após uma queima, o menor valor de 1,11%. O escoamento superficial decresceu dos agroecossistemas de menor para os sistemas de maior percentagem de material orgânico.In the watershed of the Timboteua and Buiuna streams in the State of Pará, the effect of land use change and soil management on the runoff rates was evaluated. Eighteen experimental plots (1 m² were established, three in each one of the six evaluated agroecosystems as follows: i 20 years Secondary vegetation ("Capoeira" (CP, ii Agroforestry system / slash-and-burn (SQ, iii Agroforestry system / chop-and-mulch (ST, iv Cassava crop / chop-and-mulch (RT, v Cassava crop / slash-and-burn (RQ, vi Cattle pasture / slash-and-burn (PQ. Nearby these plots two rain gauges and three rainwater collectors for monitoring of precipitation were also installed. Along 2010 rainy season 234 samples were collected on 26 different dates. A strong correlation

  1. Vulnerability of the Superficial Zone of Immature Articular Cartilage to Compressive Injury

    Energy Technology Data Exchange (ETDEWEB)

    Rolauffs, R.; Muehleman, C; Li, J; Kurz, B; Kuettner, K; Frank, E; Grodzinsky, A

    2010-01-01

    The zonal composition and functioning of adult articular cartilage causes depth-dependent responses to compressive injury. In immature cartilage, shear and compressive moduli as well as collagen and sulfated glycosaminoglycan (sGAG) content also vary with depth. However, there is little understanding of the depth-dependent damage caused by injury. Since injury to immature knee joints most often causes articular cartilage lesions, this study was undertaken to characterize the zonal dependence of biomechanical, biochemical, and matrix-associated changes caused by compressive injury. Disks from the superficial and deeper zones of bovine calves were biomechanically characterized. Injury to the disks was achieved by applying a final strain of 50% compression at 100%/second, followed by biomechanical recharacterization. Tissue compaction upon injury as well as sGAG density, sGAG loss, and biosynthesis were measured. Collagen fiber orientation and matrix damage were assessed using histology, diffraction-enhanced x-ray imaging, and texture analysis. Injured superficial zone disks showed surface disruption, tissue compaction by 20.3 {+-} 4.3% (mean {+-} SEM), and immediate biomechanical impairment that was revealed by a mean {+-} SEM decrease in dynamic stiffness to 7.1 {+-} 3.3% of the value before injury and equilibrium moduli that were below the level of detection. Tissue areas that appeared intact on histology showed clear textural alterations. Injured deeper zone disks showed collagen crimping but remained undamaged and biomechanically intact. Superficial zone disks did not lose sGAG immediately after injury, but lost 17.8 {+-} 1.4% of sGAG after 48 hours; deeper zone disks lost only 2.8 {+-} 0.3% of sGAG content. Biomechanical impairment was associated primarily with structural damage. The soft superficial zone of immature cartilage is vulnerable to compressive injury, causing superficial matrix disruption, extensive compaction, and textural alteration, which results

  2. ANÁLISIS DE SISTEMAS ASFALTO-AGREGADO A PARTIR DE MEDICIONES DE ENERGÍA SUPERFICIAL LIBRE

    Directory of Open Access Journals (Sweden)

    ALLEX E. ALVAREZ

    2012-01-01

    Full Text Available La energía superficial libre (ESL es una propiedad termodinámica fundamental de los materiales que puede ser empleada para cuantificar la calidad de la adhesión entre diversos materiales, la susceptibilidad de éstos a perder su adhesión por la presencia de agua en el sistema y la capacidad del recubrimiento de un material sobre otro con diferentes valores de ESL (i.e., humectabilidad. Estos principios son aplicables a diferentes materiales, incluidos los sistemas asfalto-agregado (i.e., mezclas asfálticas. El presente trabajo tiene como objetivo principal presentar un análisis, basado en mediciones de ESL de los materiales constitutivos de las mezclas asfálticas, mediante el cual se puede cuantificar la calidad de la adhesión, la susceptibilidad al daño por humedad y la calidad del recubrimiento del asfalto sobre el agregado en diversos sistemas asfalto-agregado. Las mediciones de ESL de asfaltos y agregados fueron realizadas en laboratorio a través del método de la Placa Wilhelmy y de la Máquina de Adsorción Universal (USD, respectivamente. Los materiales evaluados incluyeron asfaltos colombianos y agregados de origen colombiano y norteamericano. El análisis específico consistió en evaluar el efecto de procesos industriales de modificación y la adición de llenante mineral sobre la calidad de la adhesión, la susceptibilidad al daño por humedad y la humectabilidad de diversos sistemas asfalto-agregado. Los resultados sugieren que la medición de la ESL de asfaltos y agregados es una herramienta eficiente para evaluar la compatibilidad y el desempeño esperado de diversos sistemas asfalto-agregado, así como los cambios inducidos a nivel fundamental por diferentes procesos propios de la fabricación de mezclas asfálticas (e.g., adición de llenante mineral.

  3. Detección de contaminantes orgánicos sobre superficies pasivas por espectroscopia raman estimulada

    Directory of Open Access Journals (Sweden)

    Jorge Medina Valtierra

    2006-01-01

    Full Text Available Entre las docenas de compuestos orgánicos aromáticos que conforman una parte de la contaminación en el ambiente de una ciudad, el naftaleno es un compuesto orgánico semi-volátil (COS presente en una buena concentración. El naftaleno o también llamado naftalina es un sólido blanco que se evapora fácilmente y se produce naturalmente cuando se queman combustibles, también cuando se quema tabaco o madera se produce naftalina. La exposición a grandes cantidades puede dañar o destruir una porción de los glóbulos rojos. Esto puede hacer que el número de glóbulos rojos disminuya hasta que su cuerpo remplace las células destruidas. Esta condición se llama anemia hemolítica. Se han descrito numeroso casos de anemia hemolítica en niños, incluso en recién nacidos, ya que la naftalina puede pasar de la sangre de una mujer embarazada a la sangre del feto. En este trabajo, se ha seleccionado el naftaleno como molécula modelo porque da un espectro Raman con picos bien definidos en un rango entre 500 y 3000 cm-1. La espectroscopia Raman de superficie promovida (SERS se usó para la detección de unos cuantos micro-gramos de naftaleno adsorbido sobre papel filtro modificado. La modificación consistió en aplicar un recubrimiento de nano-partículas de Ago sobre el papel usando dos métodos en los cuales se realiza una reacción química de reducción de un compuesto de plata. Al aplicar ésta técnica espectroscópica usando solo papel filtro se determina una cantidad mínima detectable por Raman convencional. Este valor cmd encontrado para el naftaleno, se toma como referencia para probar bajo la misma metodología, papel filtro con recubrimiento de nano-partículas de Ago. Bajo la técnica SERS la señal de los picos detectados fue mucho mayor, posibilitando la cuantificación de este contaminante atmosférico en cantidades menores al cmd encontrado

  4. Kinesio tape management for superficial radial nerve entrapment: a case report.

    Science.gov (United States)

    Anandkumar, Sudarshan

    2013-04-01

    This case report describes a 41-year-old female who presented with complaints of pain in the lower lateral one-third of the right radius extending into the first web space. Tinel's sign reproducing the patient's symptoms was elicited 8.2 cm above the radial styloid process. Physical diagnosis for superficial radial nerve entrapment was made based on a positive upper limb neural tension test 2a along with symptom reproduction during resisted isometrics to brachioradialis and wrist extensors. A potential first time successful conservative Kinesio tape (KT) management for entrapment of the superficial radial nerve is described in this report. An immediate improvement in grip strength and functional activities along with a reduction in pain and swelling was noted in this patient after the first treatment session, which was maintained at a 6 month follow-up. A model is proposed describing the mechanism by which KT application could be used to intervene for nerve entrapment interfaces.

  5. SUPERFICIAL ANGIOMYXOMA OF THE NECK WITHOUT ASSOCIATED CARNEY’S COMPLEX: A RARE CASE REPORT

    Directory of Open Access Journals (Sweden)

    Suiyibangbe

    2015-05-01

    Full Text Available Superficial angiomyxomas are rare benign soft tissue tumour usually solitary and predominantly involving the dermis and subcutis. We report a case of 21 year s old male who presented with a history of swelling on the left upper anterolateral aspect of neck, measuring 3x2cm with irregular surface, non - tender, mobile and firm in consistency, fixed to the skin but not to the underlying structured. No lymph node was palpable. There was no evidence of any of the components of Carney’s complex at the time of presentation. Provisional diagnosis was made as Pleomorphic adenoma by FNAC. Wide local surgical excision was done. Histopathology examination revealed to be super ficial angiomyxoma. Here, we present a case of superficial angiomyxoma with a review to its rarity and difficulty in diagnosing and distinguishing from other soft tissue tumour of the skin.

  6. Superficial malignant peripheral nerve sheath tumor arising from diffuse neurofibroma in a neurofibromatosis type 1 patient.

    Science.gov (United States)

    Inoue, Takuya; Kuwashiro, Maki; Misago, Noriyuki; Narisawa, Yutaka

    2014-07-01

    Malignant peripheral nerve sheath tumors (MPNST) are regarded as sarcomas that arise from peripheral nerves or that display differentiation along the lines of the various elements of the nerve sheath. These tumors occur in deep soft tissues, but superficial primary MPNST with a cutaneous or subcutaneous origin have rarely been reported. A 70-year-old woman presented with a 3-4-year history of a slowly enlarging soft nodule on the left side of her neck. The histopathological diagnosis of the nodule was low-grade MPNST arising from diffuse neurofibroma. There was increased cellularity, but no necrosis or mitotic activity. These histopathological findings pose difficulties in differential diagnosis from a neurofibroma with atypical histological features. We report a rare case of superficial MPNST arising from diffuse neurofibroma associated with underlying occipital bone dysplasia in a neurofibromatosis type 1 patient.

  7. Challenge and threat motivation: Effects on superficial and elaborative information processing

    Directory of Open Access Journals (Sweden)

    Ricardo eFonseca

    2014-10-01

    Full Text Available This paper integrates the motivational states of challenge and threat within a dual processing perspective. Previous research has demonstrated that individuals experience a challenge state when individuals have sufficient resources to cope with the demands of a task (Blascovich et al., 1993. Because the experience of resource availability has been shown to be associated with superficial processing (Garcia-Marques & Mackie, 2007, we tested the hypothesis that challenge is associated with superficial processing in two persuasion experiments. Experiment 1 revealed that inducing attitudes of participants in a challenge state was not sensitive to the quality of arguments presented. Experiment 2 demonstrated that the effect occurs even when task engagement, manipulated by the presence (vs. the absence of a task observer (Blascovich et al., 1993, is high. The implications of these results for the BPS model and the cognitive and motivational literature are discussed.

  8. Fissure sealants: in vitro evaluation of abrasion wear and superficial roughness

    Directory of Open Access Journals (Sweden)

    Vanessa Pardi

    2008-06-01

    Full Text Available The aim of this study was to compare the in vitro wear and superficial roughness of four materials (Delton Dyract Flow, Dentsply; Filtek Flow, Vitremer, 3M ESPE used as fissure sealant in 32 extracted human molars divided in four groups (n = 8 after abrasion with toothbrush/dentifrice. Impressions of each occlusal surface were made to analyze wear and circular specimens were prepared to analyze the roughness. Teeth and specimens were mounted in a toothbrushing machine. The replicas were observed using a SEM to determine the superficial wear. Wear: there were no statistically significant differences either between Delton and Filtek Flow or between Dyract Flow and Vitremer. Roughness: there were no statistical differences between Filtek Flow and Dyract Flow, Dyract Flow and Vitremer, Vitremer and Delton., Considering the clinical practice, if caries activity is present the use of Vitremer is suggested not only for its well known fluoride release, but it presented good roughness results.

  9. Color Doppler US of superficial adenopathies; Il color Doppler nelle adenopatie superficiali

    Energy Technology Data Exchange (ETDEWEB)

    Giovagnorio, F. [Rome Univ. (Italy). 1. Cattedra di Radiologia

    1999-03-01

    Superficial lymph node are frequently involved in different diseases. Their location makes them suitable for effective assessment with high-resolution US and color Doppler has been recently suggested as a tool for increasing sensitivity in lymph node studies. Thus the author investigated the main vascular patterns detectable in abnormal superficial lymph nodes. [Italian] Numerosa malattie con natura differente coinvolgono i linfonodi superficiali: la localizzazione ne consente l'esplorazione con ecografia con alta risoluzione e lo studio mediante eco color Doppler e' stato proposto negli ultimi anni incontrando notevole sviluppo in tempi recenti. Scopo del lavoro e' illustrare il contributo personale nella definizione dei principali quadri riscontrabili nelle diverse adenopatie superficiali.

  10. [Percutaneous treatment of a superficial femoral artery aneurysm using an intravascular stent-prosthesis].

    Science.gov (United States)

    Michel, C; Laffy, P Y; Leblanc, G; Riou, J Y; Chaloum, S; Maklouf, M; Le Guen, O

    1999-05-01

    One case of superficial femoral aneurysm treated percutaneously by endovascular stent graft (Passager Boston) is reported. The initial radiographic evaluation included arteriography and color doppler sonography which enable analysis of the flow path, the extent of the wall thrombus, the choice of stended graft size. The procedure of implantation was technically trouble free. The post-procedure 3D CT and arteriography demonstrated occlusion of the aneurysm and resaturation of normal flow path. The six and twelve month check confirmed the stability of the results locally and the integrity of run off vessels. In weakened and specially elderly patient percutaneous treatment of superficial femoral artery aneurysm can be carried out easily. The contribution of 3D CT is essential in follow up to ensure an optimal result and to detect any complication.

  11. The inspiratory maneuver: a simple method to assess the superficial lamina propria during endoscopy.

    Science.gov (United States)

    Sulica, Lucian; Behrman, Alison; Roark, Rick

    2005-09-01

    We describe a simple means of assessing the condition of the superficial lamina propria during endoscopy, which we use in our practice as an adjunct to careful stroboscopic examination. An intake of breath against partially adducted vocal folds serves to draw the mucosa inferomedially into the glottis, which reveals areas of diminished mobility, the relationship of mucosal lesions to deeper tissues of the vocal folds, and subtle submucosal lesions. This is possible because of the unique geometry of the glottis that renders the vector forces of airflow different at inspiration and expiration. Because the integrity of the superficial lamina propria is essential to healthy phonation, we have found the inspiratory maneuver useful across a wide variety of mucosal pathologic conditions.

  12. Superficial performance and pore structure of palygorskite treated by hydrochloric acid

    Institute of Scientific and Technical Information of China (English)

    LIU Yi-xin; DAI Wei-wei; Wang Ting; TAO Yong

    2006-01-01

    In order to amend the superficial performance of palygorskite and improve its application, the natural palygorskite(NP) was treated in the dipping and ionic exchanging experiments using 6 mol/L hydrochloric acid treatment. The performance and pore structure of the treated palygorskite(TP) were investigated by means of microscope analyses, FT-IR, XRF, BET-SSA and full hole distribution analytical techniques. The results show that the hydrochloric acid treatment can make the gracile and aggregating compact crystal bundles inside palygorskite clay broken and dispersed, the roughness of microcrystalline surface increases, which not only can dissolve or remove dolomite but vary the superficial performance of palygorskite to some degree. The specific surface area and pore volume increase a lot, while the mean pore size decreases. The pore structure of TP changes remarkably compared with that of NP after 6 mol/L hydrochloric acid treatment, and the relevant physicochemical performance can be improved.

  13. H3+: superficies de energía potencial, estados y transiciones rovibracionales

    Science.gov (United States)

    Aguado, M. Paniagua Y. A.

    Hemos calculado varias superficies globales de energía potencial para el estado fundamental y excitados del sistema H3+ en más de ocho mil geometrías diferentes usando una base (9s 3p 1d)/[4s 3p 1d] en cada átomo de Hidrógeno y mediante un método de cálculo de interacción de configuraciones completa (FCI). Hemos ajustado las superficies a formas analíticas del tipo Aguado y Paniagua con un error promedio menor de 50 cm-1 y menor en el pozo de potencial del estado fundamental. Finalmente hemos calculado y analizado los niveles vibracionales para los dos estados electrónicos más bajos, siendo la desviación respecto de los mejores valores publicados, tanto experimentales como teóricos, de unos pocos números de onda.

  14. Subsurface nitrate reduction under wetlands takes place in narrow superficial zones

    DEFF Research Database (Denmark)

    dos Santos Ribas, Osmar; Calderer, M.; Marti, Vicens

    2017-01-01

    This study aims to investigate the depth distribution of the Nitrate Reduction Potential (NRP) on a natural and a re-established wetland. The obtained NRP provides a valuable data of the driving factors affecting denitrification, the Dissimilatory Nitrate Reduction to Ammonium (DNRA) process......-first order rate constant (k) from where NRPs were obtained. NR took place in a narrow superficial zone showing a dropping natural logarithmic trend along depth. The main driving factor of denitrification, besides depth, was OM. Although, DOC and LOI could not express by themselves and absolute correlation...... with NRP, high amounts of DOC ensured enough quantity and quality of labile OM for NR. Besides, high concentration of LOI but a scarce abundance of DOC failed to drive NR. DNRA was only important in superficial samples with high contents of OM. Lastly, the high NRP of the re-established wetland confirms...

  15. Avaliação da qualidade da água superficial na área de influência de um lixão

    National Research Council Canada - National Science Library

    Pereira, Anne Relvas; Santos, Aldecy de Almeida; Silva, Welitom Ttatom Pereira da; Frozzi, José Cesar; Peixoto, Klenna Lívia Gomes

    2013-01-01

    ... das águas superficiais e subterrâneas pelo lixiviado, fato este, que pode acarretar sérias consequências à saúde pública. Nesse contexto, o trabalho teve como objetivo avaliar a qualidade...

  16. Study of preparation and surface morphology of self-ordered nanoporous alumina; Estudo da preparacao e da morfologia de superficie de alumina nanoporosa auto-organizada

    Energy Technology Data Exchange (ETDEWEB)

    Rodrigues, Elisa Marchezini; Martins, Maximiliano Delany, E-mail: elisamarch@gmail.com, E-mail: MG.mdm@cdtn.br [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG. (Brazil); Silva, Ronald Arreguy, E-mail: arregsilva@yahoo.com.br [Centro Universitario de Belo Horizonte (UniBH), Belo Horizonte, MG (Brazil)

    2013-07-01

    Nanoporous alumina is a typical material that exhibits self-ordered nanochannels spontaneously organized in hexagonal shape. Produced by anodizing of metallic aluminum, it has been used as a template for production of materials at the nanoscale. This work aimed to study the preparation of nanoporous alumina by anodic anodizing of metallic aluminum substrates. The nanoporous alumina was prepared following the methodology proposed by Masuda and Fukuda (1995), a two-step method consisting of anodizing the aluminum sample in the potentiostatic mode, removing the layer of aluminum oxide (alumina) formed and then repeat the anodization process under the same conditions as the first anodization. This method produces nanoporous alumina with narrow pore diameter distribution and well-ordered structure. (author)

  17. Guía de cuidados de enfermería en patologías de la superficie ocular

    OpenAIRE

    2015-01-01

     Conocer la anatomía y fisiología de las diferentes estructuras que componen la superficie ocular.  Valorar un ojo rojo e identificar los diferentes tipos de secreciones y otros signos y síntomas acompañantes, para poder hacer un cribado sobre la gravedad del cuadro.  Conocer las afecciones de superficie ocular y anejos más frecuentes donde puede actuar enfermería.  Identificar signos y síntomas de las patologías de superficie ocular.  Saber planificar los cuidados de enferme...

  18. Anatomía de la arteria temporal superficial: importancia quirúrgica: estudio piloto en cadáveres

    OpenAIRE

    J.J. Pradel-Mora; C. Gutiérrez-Gómez; S.M. Arteaga-Martínez; A. Soto-Paulino; M. Perez-Dosal; F.J. López-Mendoza

    2015-01-01

    El conocimiento preciso de los patrones vasculares permite mejorar los resultados de la reconstrucción regional del pabellón auricular y el diseño de colgajos regionales dependientes de la arteria temporal superficial para la reconstrucción facial. En México, no contamos en la actualidad con descripciones anatómicas de las variantes vasculares normales de la arteria temporal superficial. El objetivo de este trabajo es la descripción de las variantes anatómicas de la arteria temporal superfici...

  19. Estudio de las variables que afectan la rugosidad superficial en el torneado de piezas esbeltas bajo retemblado

    OpenAIRE

    2008-01-01

    El mecanizado de piezas delgadas se encuentra influenciado por un fenómeno denominado retemblado, que afecta la calidad superficial. En este trabajo se presenta un estudio de los factores que influyen sobre la rugosidad superficial en un proceso de torneado de cilindros esbeltos bajo el efecto del fenómeno de retemblado. El propósito del estudio es determinar cuales son las variables del proceso que más influyen sobre la rugosidad superficial. Para ello se utiliza un modelo que permite pred...

  20. Increase in sensitivity of sensor units of environment refraction index change based on superficial plasmon resonance

    Directory of Open Access Journals (Sweden)

    Ushenin Yu. V.

    2011-04-01

    Full Text Available Results of computer modeling of an angular spectrum superficial plasmon resonance in metal films measurements with device PLAZMON-5 with infra-red radiator are analysed. It is shown that use of an infra-red source of radiation allows to improve sensitivity of sensor device in comparison with source of visible light. On an example of dielectric refraction indexes measurement with PLAZMON-5 device experimental check of theoretical calculations has been carried out.

  1. Three-dimensional Superficial Liposculpture of the Hips, Flank, and Thighs

    Directory of Open Access Journals (Sweden)

    Yi Xin Zhang, MD

    2015-01-01

    Conclusions: If performed correctly, 3-dimensional superficial liposuction of the trunk, hips, and thighs can yield very satisfying outcomes because of the excellent contour and the enhanced skin retraction provided by the thin cutaneous adipose flap. Three-dimensional liposuction is a reliable method with proven results. A careful application of the technique combined with accurate surgical planning, a thorough preoperative explanation of real expectations, and postoperative care is crucial.

  2. Urethroplasty by superficial membranous fascia for long urethral strictures: a new approach.

    Science.gov (United States)

    Onu, P E

    1997-01-01

    36 patients has single-stage repair of severe bulbar urethral strictures using a superficial membranous fascia tubed flap. The length of follow-up varied from 9 months to 2 years (mean 15 months). Recurrence occurred in 1 case. Urodynamic studies in 35 cases before and after urethroplasty showed a marked improvement in urinary flow and voiding postoperatively. This procedure is safe, simple, economically preferable and has a no higher risk than other 1- and 2-stage procedures.

  3. Superficial dosimetry imaging of Čerenkov emission in electron beam radiotherapy of phantoms

    Science.gov (United States)

    Zhang, Rongxiao; Fox, Colleen J.; Glaser, Adam K.; Gladstone, David J.; Pogue, Brian W.

    2013-08-01

    Čerenkov emission is generated from ionizing radiation in tissue above 264 keV energy. This study presents the first examination of this optical emission as a surrogate for the absorbed superficial dose. Čerenkov emission was imaged from the surface of flat tissue phantoms irradiated with electrons, using a range of field sizes from 6 cm × 6 cm to 20 cm × 20 cm, incident angles from 0° to 50°, and energies from 6 to 18 MeV. The Čerenkov images were compared with the estimated superficial dose in phantoms from direct diode measurements, as well as calculations by Monte Carlo and the treatment planning system. Intensity images showed outstanding linear agreement (R2 = 0.97) with reference data of the known dose for energies from 6 to 18 MeV. When orthogonal delivery was carried out, the in-plane and cross-plane dose distribution comparisons indicated very little difference (±2-4% differences) between the different methods of estimation as compared to Čerenkov light imaging. For an incident angle 50°, the Čerenkov images and Monte Carlo simulation show excellent agreement with the diode data, but the treatment planning system had a larger error (OPT = ±1˜2%, diode = ±2˜3%, TPS = ±6-8% differences) as would be expected. The sampling depth of superficial dosimetry based on Čerenkov radiation has been simulated in a layered skin model, showing the potential of sampling depth tuning by spectral filtering. Taken together, these measurements and simulations indicate that Čerenkov emission imaging might provide a valuable method of superficial dosimetry imaging from incident radiotherapy beams of electrons.

  4. Colloidal silver-based nanogel as nonocclusive dressing for multiple superficial pellet wounds.

    Science.gov (United States)

    Dharmshaktu, Ganesh Singh; Singhal, Aanshu; Pangtey, Tanuja

    2016-01-01

    A good dressing is mandatory to an uncomplicated wound healing, especially when foreign particles contaminate the wound. Various forms of dressing preparations are available for use and differ in chemical composition and efficacy. Silver has been a known agent with good antimicrobial and healing properties and recent times has seen an upsurge in various silver-based dressing supplements. We describe our report of use and efficacy of a silver nanoparticle- based gel dressing in the healing of multiple superficial firearm pellet wounds.

  5. A superficial coating to improve oxidation and decarburization resistance of bearing steel at high temperature

    Science.gov (United States)

    Wang, Xiaojing; Wei, Lianqi; Zhou, Xun; Zhang, Xiaomeng; Ye, Shufeng; Chen, Yunfa

    2012-03-01

    The coating material consisted of aqueous slurry of dolomite, bauxite and silicon carbide mixture. Such a coating material when applied superficially on the steel surface not only enhances oxidation resistance but also helps in inhibiting the decarburization even up to 1250 °C. Metalloscope, XRD and TG-DTA thermal analysis revealed that the formation of a newly densified coating comprised of spinels and the reducing atmosphere formed by the oxidation of SiC improved the resistance of oxidation and decarburization.

  6. Perineural fibrosis of superficial peroneal nerve complicating ankle sprain: a case report.

    Science.gov (United States)

    Acus, R W; Flanagan, J P

    1991-02-01

    The peroneal nerve is susceptible to traction injury during inversion ankle sprains. Previously, these traction lesions have been identified only at the fibular neck and popliteal fossa level. This report illustrates a previously unreported condition of perineural fibrosis of the superficial peroneal nerve at the level of the ankle following an inversion ankle sprain. Perineural fibrosis should be considered in the differential diagnosis of patients with persistent pain after ankle sprain.

  7. Intraoral Superficial Angiomyxoma of the Upper Alveolus: Report of a Unique Case

    Directory of Open Access Journals (Sweden)

    Ravindra S. V.

    2012-01-01

    Full Text Available Angiomyxomas are relatively a group of uncommon myxoid mesenchymal tumors characterized by frequent local recurrences and show lack of malignant potential. Basically three types of angiomyxomas are recognized superficial, aggressive, and angiomyofibroblastoma. Though the angiomyxomas are rarely reported in the head and neck region, the paper shows reported cases intraorally in the buccal mucosa and floor of the mouth. Here, the authors report a rare case of angiomyxoma presenting as a growth in the upper posterior alveolar mucosa.

  8. The superficial musculo-aponeurotic system (SMAS) in the parotid and cheek area.

    Science.gov (United States)

    Mitz, V; Peyronie, M

    1976-07-01

    We have investigated the superficial musculo-aponeurotic system (SMAS) in the parotid and cheek areas by anatomical dissections, by radiographs, and by histological sections. The SMAS may be helpful in corrective surgery for facial palsy and during face lifting operations if a retrofascial approach is used. This procedure, safe in the parotid area, can become dangerous in the area anterior to the parotid gland.

  9. New puncture needle (Seldinger technique) for easy antegrade catheterization of the superficial femoral artery

    Energy Technology Data Exchange (ETDEWEB)

    Saltzmann, J.; Probst, P.

    1987-02-01

    Mainly for anatomical reasons a guide-wire or a catheter has a tendency to turn into the deep femoral artery during antegrade catheterization of the lower limb. To overcome this problem a curved puncture needle has been designed which allows positioning of the guide-wire in an anterior direction. Antegrade catheterization of the superficial femoral artery was achieved in 25 patients without lengthy manipulations or complications. With this technique the rate of complications at antegrade catheterization will probably be reduced.

  10. Superficial Dorsal Vein Injury/Thrombosis Presenting as False Penile Fracture Requiring Dorsal Venous Ligation

    Directory of Open Access Journals (Sweden)

    Arash Rafiei, MD

    2014-12-01

    Conclusion: Early exploration of patients with suspected penile fracture provides excellent results with maintenance of erectile function. Also, in the setting of dorsal vein thrombosis, ligation preserves the integrity of the penile tissues and avoids unnecessary complications from conservative management. Rafiei A, Hakky TS, Martinez D, Parker J, and Carrion R. Superficial dorsal vein injury/thrombosis presenting as false penile fracture requiring dorsal venous ligation. Sex Med 2014;2:182–185.

  11. Superficial integrity analysis in a super duplex stainless steel after turning

    OpenAIRE

    E.C. Bordinassi; M.F . Stipkovic; G.F. Batalha; S. Delijaicov; LIMA, N.B.

    2006-01-01

    Purpose: Purpose of this paper was to study the main effects of the turning in the superficial integrity of theduplex stainless steel ASTM A890-Gr6A.Design/methodology/approach: The focus of the work was the finishing operations and a complete factorialplanning was used, with 2 levels and 5 factors. The tests were conducted on a turning center with carbidetools and the main entrances variables were: tool material class, feed rate, cutting depth, cutting speed andcutting fluid utilization. The...

  12. Superficial Fungal Infections in Patients with Hematologic Malignancies: A Case-Control Study

    Directory of Open Access Journals (Sweden)

    Berna Ülgen Altay

    2011-06-01

    Full Text Available Background and Design: Dermatophytes, yeasts and some moulds settle on the skin and mucosal surfaces in immunocompetent individuals as commensals. Patients with diabetes mellitus, HIV-positive patients, organ transplant recipients and the patients with malignancies are predisposed to develop superficial fungal infections. We aimed to determine the prevalence, clinical and mycological features of superficial fungal infections in patients with hematologic malignancies in this case-control study.Material and Method: Eighty patients with hematologic malignancies (49 men, 31 women and 50 healthy individuals (22 men, 28 women randomly selected at our clinical department as controls were included to this study between 2003 and 2004. The mean age was 52±1.85 years in patients and 41.56±2.04 years in controls. All patients were inspected for superficial fungal infections. Skin scrapings and mucosal swabs were obtained from the toe web, inguinal region, any suspicious lesion and oral mucosa. Nail samples were also collected. All samples were examined by direct microscopy and cultured in Sabouraud dextrose agar (SDA. The yeasts were established in germ-tube production. Results: Fifty-six (70% of 80 patients with hematologic malignancies had fungal colonization, whereas 21 (42% of 50 controls had. For both groups, oral mucosa was the predominant area that fungus was mostly isolated from. A rising number of non-dermatophyte moulds (26% was observed. Candida albicans was the predominant agent isolated from the culture.Conclusion: The prevalence of superficial fungal infection was higher in patients with hematologic malignancies (being immunosuppressed than in the normal population. Candida albicans was the predominant isolated agent that was found in our study. We observed oral mucosa candidal infection mostly. The rising number of non-dermatophyte moulds is attributed to long-term use of antibiotics, cytotoxic chemotherapies and antifungals.

  13. Immediate Bilateral Breast Reconstruction with Unilateral Deep Superior Epigastric Artery and Superficial Circumflex Iliac Artery Flaps

    Directory of Open Access Journals (Sweden)

    Keith S. Hansen

    2016-09-01

    Full Text Available Autologous breast reconstruction utilizing a perforator flap is an increasingly popular method for reducing donor site morbidity and implant-related complications. However, aberrant anatomy not readily visible on computed tomography angiography is a rare albeit real risk when undergoing perforator flap reconstruction. We present an operative case of a patient who successfully underwent a bilateral breast reconstruction sourced from a unilateral abdominal flap divided into deep superior epigastric artery and superficial circumflex iliac artery flap segments.

  14. Eradication of superficial fungal infections by conventional and novel approaches: a comprehensive review.

    Science.gov (United States)

    Kumar, Lalit; Verma, Shivani; Bhardwaj, Ankur; Vaidya, Shubha; Vaidya, Bhuvaneshwar

    2014-02-01

    During the last two decades, the occurrence of fungal infections either superficial or systemic has been increasing. Moreover, fungal infections become more difficult to treat when they show coupling with immunogenic diseases like AIDS. Superficial fungal infections are associated with skin, nail and eye and are less prominent to systemic infection. However, it may be dangerous if not treated properly. It is usually observed that conventional formulations including cream, powder, gels etc. are used to treat skin fungal infections even for the deep seated fungal infections. However, these formulations show various side-effects on the application site like burning, redness and swelling. Further, due to the immediate release of drug from these formulations they can stimulate the immune system of body generating high impact allergic reactions. Deep seated fungal infections like invasive aspergillosis and invasive candidiasis may be more difficult to treat because the drug released from conventional topical formulation can not reach at the target site due to the low penetration capacity. Similarly, in case of fungal infection of nail and eye, conventional formulations show problem of less bioavailability. Thus, to overcome the drawbacks of conventional therapy a lot of research works have been carried out to develop novel formulations of antifungal drugs to deliver them superficially. Novel formulations explored for the skin delivery of antifungal drugs include liposomes, niosomes, ethosomes, microemulsions, nanoparticles, microspheres and micelles. These formulations show extended or sustained release of drug, minimizing the side effect on application site, enhancing bioavailability and reducing the dosing frequency. Further, these formulations also show penetration into the deep skin to treat invasive fungal infections. Novel formulations explored in treatment of fungal infections of eye are liposomes and nanoparticles and whether for nail fungal infections

  15. Use of Superficial Temporal Fascia Flap for Treatment of Postradiation Trismus: An Innovation.

    Science.gov (United States)

    Sharma, Rohit; Roy, Indranil Deb; Deshmukh, Tushar S; Bhandari, Amit

    2015-10-01

    Post radiation trismus severely reduces the quality of life. Radiation causes fibrosis of muscles of mastication resulting in severe restriction of mouth opening. Treatment options are limited as most of the local flaps are in the radiation zone. The present case is the first case in existing literature where, following the release of fibrosis secondary to radiation, superficial temporal fascia (STF) was used to cover the defect with excellent results and no recurrence after a year of follow up.

  16. Outcome of superficial squamous cell carcinoma of the esophagus: a clinicopathological study

    Directory of Open Access Journals (Sweden)

    Maria Aparecida Coelho de Arruda Henry

    2013-05-01

    Full Text Available PURPOSE: To analyze the clinicopathological features and outcome of patients with pathologically proven superficial squamous cell carcinoma of the esophagus. METHODS: A total of 234 consecutive cases of esophageal carcinoma in a 15-year period were reviewed. RESULTS: Superficial esophageal cancer was found in five patients (2.1%. They were four men and one woman and the mean age was 52.5 years. Smoking and alcohol were the main risk factors. Achalasia due to Chagas disease occurred in one patient and a second primary tumor developed in the larynx in another patient. Four patients underwent esophagectomy and one patient received chemoradiotherapy. The histopathologic diagnosis was of squamous cell carcinoma in all cases. Intramucosal tumor (Tis was identified in three cases and superficially invasive carcinoma in two cases. Four patients are free of disease with survival times of two, four, six and nine years. The patient who developed laryngeal cancer died six years after esophagectomy. CONCLUSION: Long-term survival in patients with esophageal cancer is related to early diagnosis. Therefore, a less aggressive surgical approach, such as endoscopic resection, may be a good option for these patients, if depth of tumor invasion can be accurately predicted by the new imaging tools.

  17. Caracterización superficial en fase gas y líquida de carbones activados

    Directory of Open Access Journals (Sweden)

    Liliana Giraldo Gutierréz

    2008-05-01

    Full Text Available Se determinó el área superficial de carbones activados obtenidos a partir de cascarilla de café y cáscara de coco, mediante isotermas de adsorción de N2 a 77K. Se compararon los resultados con aquellos obtenidos con un método comúnmente utilizado, el índice de azul de metileno, y se encontró una buena correlación entre las dos áreas determinadas por éste método. Se muestra que los dos métodos permiten realizar un análisis complementario de una superficie porosa./ The superficial area of an activated carbon obtained from coffee husk and coconut shell was determined, by means of isotherms of adsorption of N2 to 77K and the results they area compared with the method of index blue of methylene, finding an good correlation between the two areas determined by this method. This research shows that both methods allow making a complementary analysis of a porous surface.

  18. Coalescence of deep and superficial epileptic foci into larger discharge units in adult rat neocortex.

    Science.gov (United States)

    Serafini, Ruggero; Andrade, Rodrigo; Loeb, Jeffrey A

    2015-04-30

    Epilepsy is a disease of neuronal hyper-synchrony that can involve both neocortical and hippocampal brain regions. While much is known about the network properties of the hippocampus little is known of how epileptic neocortical hyper-synchrony develops. We aimed at characterizing the properties of epileptic discharges of a neocortical epileptic focus. We established a multi-electrode-array method to record the spatial patterns of epileptiform potentials in acute adult rat brain slices evoked by 4-Aminopyridine in the absence of magnesium. Locations of discharges mapped to two anatomical regions over the somatosensory cortex and over the lateral convexity separated by a gap at a location matching the dysgranular zone. Focal epileptiform discharges were recorded in superficial and deep neocortical layers but over superficial layers, they exhibited larger surface areas. They were often independent even when closely spaced to one another but they became progressively coupled resulting in larger zones of coherent discharge. The gradual coupling of multiple, independent, closely spaced, spatially restricted, focal discharges between deep and superficial neocortical layers represents a possible mechanism of the development of an epileptogenic zone.

  19. COALESCENCE OF DEEP AND SUPERFICIAL EPILEPTIC FOCI INTO LARGER DISCHARGE UNITS IN ADULT RAT NEOCORTEX

    Science.gov (United States)

    SERAFINI, RUGGERO; ANDRADE, RODRIGO; LOEB, JEFFREY A.

    2016-01-01

    Epilepsy is a disease of neuronal hyper-synchrony that can involve both neocortical and hippocampal brain regions. While much is known about the network properties of the hippocampus little is known of how epileptic neocortical hyper-synchrony develops. We aimed at characterizing the properties of epileptic discharges of a neocortical epileptic focus. We established a multi-electrode-array method to record the spatial patterns of epileptiform potentials in acute adult rat brain slices evoked by 4-Aminopyridine in the absence of magnesium. Locations of discharges mapped to two anatomical regions over the somatosensory cortex and over the lateral convexity separated by a gap at a location matching the dysgranular zone. Focal epileptiform discharges were recorded in superficial and deep neocortical layers but over superficial layers, they exhibited larger surface areas. They were often independent even when closely spaced to one another but they became progressively coupled resulting in larger zones of coherent discharge. The gradual coupling of multiple, independent, closely spaced, spatially restricted, focal discharges between deep and superficial neocortical layers represents a possible mechanism of the development of an epileptogenic zone. PMID:25701714

  20. Coexistence of esophageal superficial carcinoma and multiple leiomyomas: A case report

    Institute of Scientific and Technical Information of China (English)

    Takeshi Iwaya; Go Wakabayashi; Chihaya Maesawa; Noriyuki Uesugi; Toshimoto Kimura; Kenichiro Ikeda; Yusuke Kimura; Shingo Mitomo; Kaoru Ishida; Nobuhiro Sato

    2006-01-01

    Leiomyomas are the most common benign tumors of the esophagus. They usually occur as a single lesion or as two or three nodules. Only two cases of esophageal multiple leiomyomas comprising more than 10 nodules have been reported previously. Moreover, there have been few reports of esophageal squamous cell carcinoma overlying submucosal tumors. We describe a 71-yearold man who was diagnosed as having a superficial esophageal cancer coexisting with two or three leiomyoma nodules. During surgery, 10 or more nodules that had not been evident preoperatively were palpable in the submucosal and muscular layers throughout the esophagus. As intramural metastasis of the esophageal cancer was suspected, we considered additional lymphadenectomy, but had to rule out this option because of the patient's severe anoxemia. Microscopic examination revealed that all the nodules were leiomyomas (20 lesions, up to 3 cm in diameter), and that invasion of the carcinoma cells was limited to the submucosal layer overlying a relatively large leiomyoma.This is the first report of superficial esophageal cancer coexisting with numerous solitary leiomyomas. Multiple minute leiomyomas are often misdiagnosed as intramural metastasis, and a leiomyoma at the base of a carcinoma lesion can also be misdiagnosed as tumor invasion.The present case shows that accurate diagnosis is required for the management of patients with coexisting superficial esophageal cancer and multiple leiomyomas.

  1. [Diffuse superficial siderosis of the central nervous system: four case reports and review of the literature].

    Science.gov (United States)

    Calvo, Marta; de Miguel, Cristina; Pinel, Ana; Ortega, José M; Aladro, Yolanda

    2014-10-16

    Introduccion. La siderosis superficial difusa del sistema nervioso central (SNC) es una rara condicion debida a depositos de hemosiderina en las capas subpiales del cerebro y la medula espinal. La fuente de sangrado cronico o recurrente en el espacio subaracnoideo se detecta solo en un 50% de los casos. Los sintomas mas caracteristicos son ataxia cerebelosa e hipoacusia neurosensorial. Las secuencias eco de gradiente potenciadas en T2 de resonancia magnetica constituyen el metodo diagnostico de eleccion. Casos clinicos. Presentamos cuatro pacientes con siderosis superficial difusa del SNC relacionada con angiopatia amiloide, anticoagulacion oral, schwannoma del VIII par craneal y sin fuente de sangrado conocida en un caso. Dos pacientes desarrollaron ataxia cerebelosa; tres de ellos, episodios recurrentes de alteracion focal neurologica; uno, demencia; y el cuarto es un hallazgo radiologico. No se objetivo progresion clinica durante el seguimiento (2-11 años) en tres de ellos. El paciente con angiopatia amiloide evoluciono a demencia. Conclusiones. Los episodios recurrentes de alteracion focal neurologica son los sintomas mas frecuentes en nuestros casos de siderosis superficial difusa del SNC. La evolucion natural de esta condicion no se conoce bien y puede constituir un hallazgo radiologico.

  2. Total intravenous anesthesia with superficial cervical block or morphine transition in patients undergoing carotid endarterectomy.

    Science.gov (United States)

    Camerani, S; Capuzzo, M; Ieffa, E; Pescolderung, M; Braccini, L; Volta, C A

    2014-06-01

    The aim of this study was compare the Aldrete score at 5 minutes of two groups of patients undergoing carotid endarterectomy with intravenous anesthesia, receiving either anesthetic superficial cervical plexus block or intravenous morphine as transition analgesia. After Ethics Committee approval, this randomized, controlled, double-blind, single-center study was performed on patients undergoing carotid endarterectomy, who received total intravenous anesthesia with propofol and remifentanil infusion. After intubation, each patient was randomly assigned to Block (superficial cervical block with levobupivacaine before the surgical incision), or Morphine group (standardized dose of morphine 30 minutes before the end of surgery). In the recovery room, an investigator unaware of the patient randomization recorded time to extubation, Aldrete score, pain, nausea/vomiting, and shiver at T0 (time of extubation), and at 5 (T5), 10 (T10), and 30 minutes (T30) after extubation. Sixty-four patients were studied. Time to extubation was 11 ± 6 min for Block and 20 ± 10 min for Morphine group (P>0.001). Median Aldrete score at T0 was 9 in the Block and 6.5 in the Morphine group (PAldrete score ≥ 8 (P<0.001). Systolic blood pressure was higher in the Block than in Morphine patients at T0 and T5. This study demonstrates shorter time to extubation and better emergence from anesthesia when total intravenous anesthesia is associated with superficial cervical block than with morphine as transition analgesia.

  3. del aceite superficial en aluminio utilizando plasma frío

    Directory of Open Access Journals (Sweden)

    Eneas Ramos Nascimento Neto

    2007-01-01

    Full Text Available La creciente preocupación por el desarrollo sustentable unido al aumento de la concienciación relacionada con la preservación del medio ambiente han impulsado investigaciones científicas en diversas áreas que utilizan tecnologías ambientalmente aceptables. Dentro de este contexto la tecnología de aplicación de plasma frío representa una alternativa eficiente, limpia y económica para la remoción de aceites en superficies metálicas. El objetivo de este trabajo consiste en medir la remoción del aceite de la superficie del aluminio utilizando el proceso de plasma frío. Para evaluar estos resultados se realizaron medidas de ángulo de contacto y XPS. Este trabajo trata sobre el tipo de modificación que se produce sobre superficies metálicas por la acción de plasmas.

  4. El agrietamiento superficial de las pastas puras de cemento: una interpretación

    Directory of Open Access Journals (Sweden)

    Calleja, J.

    1964-12-01

    Full Text Available Not availableSe aborda por métodos analíticos y técnicas de difracción de rayos X el problema de determinar las posibles causas del agrietamiento superficial de galletas de pasta pura de cemento. Se encuentran diferencias de composición y constitución entre la zona superficial agrietada de las galletas y el resto de la masa, hallándose concordancia entre determinados constituyentes químicos calculados a base del análisis químico y los resultados de difracción de rayos X. Se interpretan estas diferencias como atribuibles a una exudación de lechada de la pasta, con extracción de álcalis solubles y yeso. Como consecuencia, la exudación provoca una carbonatación, una mayor retracción y posiblemente un fraguado acelerado en la zona superficial en relación con la masa interior de las galletas. Como causa directa de la ·exudación se acepta la hipótesis de una granulometría anormal del cemento, probablemente debida a un exceso de finos o gruesos por una molienda grosera, y producida por una deficiencia de tipo mecánico en el proceso de molturación del clínker.

  5. Thermographic Imaging of the Superficial Temperature in Racing Greyhounds before and after the Race

    Directory of Open Access Journals (Sweden)

    Mari Vainionpää

    2012-01-01

    Full Text Available A total of 47 racing greyhounds were enrolled in this study on two race days (in July and September, resp. at a racetrack. Twelve of the dogs participated in the study on both days. Thermographic images were taken before and after each race. From the images, superficial temperature points of selected sites (tendo calcaneus, musculus gastrocnemius, musculus gracilis, and musculus biceps femoris portio caudalis were taken and used to investigate the differences in superficial temperatures before and after the race. The thermographic images were compared between the right and left legs of a dog, between the raced distances, and between the two race days. The theoretical heat capacity of a racing greyhound was calculated. With regard to all distances raced, the superficial temperatures measured from the musculus gastrocnemius were significantly higher after the race than at baseline. No significant differences were found between the left and right legs of a dog after completing any of the distances. Significant difference was found between the two race days. The heat loss mechanisms of racing greyhounds during the race through forced conduction, radiation, evaporation, and panting can be considered adequate when observing the calculated heat capacity of the dogs.

  6. Urodeles remove mesoderm from the superficial layer by subduction through a bilateral primitive streak.

    Science.gov (United States)

    Shook, David R; Majer, Christina; Keller, Ray

    2002-08-15

    Urodeles begin gastrulation with much of their presumptive mesoderm in the superficial cell layer, all of which must move into the deep layers during development. We studied the morphogenesis of superficial mesoderm in the urodeles Ambystoma maculatum, Ambystoma mexicanum, and Taricha granulosa. In all three species, somitic, lateral, and ventral mesoderm move into the deep layer during gastrulation, ingressing through a "bilateral primitive streak" just inside the blastopore. The mesodermal epithelium appears to slide under the endodermal epithelium by a mechanism we term "subduction." Subduction removes the large expanse of superficial presumptive somitic and lateral-ventral mesoderm that initially separates the sub-blastoporal endoderm from the notochord, leaving the endoderm bounding the still epithelial notochord along the gastrocoel roof. Subduction may be a common feature of urodele gastrulation, differing in this regard from anurans. Subducting cells constrict their apices and become bottle-shaped as they approach the junction of the mesodermal and endodermal epithelia. Subducting bottle cells endocytose apical membrane and withdraw the tight junctional component cingulin from the contracting circumferential tight junctions. Either in conjunction with or immediately after subducting, the mesodermal cells undergo an epithelial-to-mesenchymal transition. The mechanism by which epithelial cells release their apical junctions to become mesenchymal, without disrupting the integrity of the epithelium, remains mysterious, but this system should prove useful in understanding this process in a developmental context.

  7. Highly efficient capillary columns packed with superficially porous particles via sequential column packing.

    Science.gov (United States)

    Treadway, James W; Wyndham, Kevin D; Jorgenson, James W

    2015-11-27

    Highly efficient capillary columns packed with superficially porous particles were created for use in ultrahigh pressure liquid chromatography. Superficially porous particles around 1.5μm in diameter were packed into fused silica capillary columns with 30, 50, and 75μm internal diameters. To create the columns, several capillary columns were serially packed from the same slurry, with packing progress plots being generated to follow the packing of each column. Characterization of these columns using hydroquinone yielded calculated minimum reduced plate heights as low as 1.24 for the most efficient 30μm internal diameter column, corresponding to over 500,000plates/m. At least one highly efficient column (minimum reduced plate height less than 2) was created for all three of the investigated column inner diameters, with the smallest diameter columns having the highest efficiency. This study proves that highly efficient capillary columns can be created using superficially porous particles and shows the efficiency potential of these particles.

  8. Comparative histopathology of pemphigus foliaceus and superficial folliculitis in the dog.

    Science.gov (United States)

    Kuhl, K A; Shofer, F S; Goldschmidt, M H

    1994-01-01

    A comparative histopathologic study of 50 cases of pemphigus foliaceus and 47 cases of superficial folliculitis in the dog was undertaken to identify those histopathologic features important in differentiating these diseases. All cases were diagnosed by the Surgical Pathology Service of the Laboratory of Pathology of the University of Pennsylvania, School of Veterinary Medicine, between January 1986 and March 1991. These cases were followed clinically to determine the accuracy of the initial histopathologic diagnosis. Data were analyzed by Fisher's exact test for discrete data and the Mann-Whitney U-test for continuous data. A probability of Siberian Husky, Laborador Retriever, Miniature Schnauzer, Old English Sheepdog, Scottish Terrier, Chinese Shar Pei, Spitz, Shetland Sheep Dog, Weimeraner, and West Highland White Terrier. An increased risk of developing pemphigus foliaceus was noted in the Akita (OR = 37.8), English Springer Spaniel (OR = 20.7), Chow Chow (OR = 12.3), Chinese Shar Pei (OR = 7.9), and Collie (OR = 3.9). Pemphigus foliaceus had a higher average density of acantholytic cells (226 +/- 22.9) than superficial folliculitis (11.8 +/- 4.6), and acantholytic cells were 183 times more likely to be present in pemphigus foliaceus. The presence of rafts of acantholytic cells occurred in pemphigus foliaceus (23/50) more often than superficial folliculitis (1/47). Recornification and reformation of pustules were, respectively, 13.4 and 3.6 times more likely to occur in pemphigus foliaceus.(ABSTRACT TRUNCATED AT 250 WORDS)

  9. [Superficial mycoses: comparative study between type 2 diabetic patients and a non-diabetic control group].

    Science.gov (United States)

    García-Humbría, Leila; Richard-Yegres, Nicole; Pérez-Blanco, Maigualida; Yegres, Francisco; Mendoza, Mireya; Acosta, Arnaldo; Hernández, Rosaura; Zárraga, Eluz

    2005-03-01

    Superficial mycoses are considered to affect more frequently patients with type 2 diabetes mellitus (DM-2), specially onychomycosis and Tinea pedis. The purpose of this study was to compare the dermatophytoses, candidiasis and Pitiriasis versicolor frequency between 40 patients with DM-2 and 40 healthy persons of either sex, 40 years old or more. Clinical, metabolic, mycologic and inmunologic studies against Candida albicans, were carried out. Both diabetics 75% (30/40) and controls 65% (26/40) presented a high frequency of superficial mycoses (no significant difference p = 0.329). Pitiriasis versicolor was not detected in diabetic patients. They presented Tinea unguium, concomitant with Tinea pedis, with a higher frequency. The predominant dermatophyte was Trichophyton rubrum 18/23 (78%) in diabetics and 8/16 (50%) in non diabetics. Candida was isolated as commensal from oral mucous: 23/40 (58%) in diabetics and 21/40 (52%) in non diabetics (serotipo A was the more frequent), and from onychomycosis: 11/40 (28%) in diabetics and 12/40 (30%) in non diabetics. The immunological response was the same in both groups: celular 100%, humoral 20%. No statistical correlation among superficial mycoses, blood glucose level, glycosylated hemoglobin values or the time suffering the disease was observed. The high susceptibility to dermatophytes and Candida sp. infection showed to be associated with age and no with the diabetic type 2 condition in those patients.

  10. Tolerance and safety of superficial chemical peeling with salicylic acid in various facial dermatoses

    Directory of Open Access Journals (Sweden)

    Iqbal Zafar

    2005-03-01

    Full Text Available BACKGROUND: Chemical peeling is a skin-wounding procedure that may have some potentially undesirable side-effects. AIMS: The present study is directed towards safety concerns associated with superficial chemical peeling with salicylic acid in various facial dermatoses. METHODS: The study was a non-comparative and a prospective one. Two hundred and sixty-eight patients of either sex, aged between 10 to 60 years, undergoing superficial chemical peeling for various facial dermatoses (melasma, acne vulgaris, freckles, post-inflammatory scars/pigmentation, actinic keratoses, plane facial warts, etc. were included in the study. Eight weekly peeling sessions were carried out in each patient. Tolerance to the procedure and any undesirable effects noted during these sessions were recorded. RESULTS: Almost all the patients tolerated the procedure well. Mild discomfort, burning, irritation and erythema were quite common but the incidence of major side-effects was very low and these too, were easily manageable. There was no significant difference in the incidence of side-effects between facial dermatoses (melasma, acne and other pigmentary disorders. CONCLUSION: Chemical peeling with salicylic acid is a well tolerated and safe treatment modality in many superficial facial dermatoses.

  11. Diagnostic Accuracy of Mucosal Biopsy versus Endoscopic Mucosal Resection in Barrett's Esophagus and Related Superficial Lesions.

    Science.gov (United States)

    Elsadek, Hany M; Radwan, Mamdouh M

    2015-01-01

    Background. Endoscopic surveillance for early detection of dysplastic or neoplastic changes in patients with Barrett's esophagus (BE) depends usually on biopsy. The diagnostic and therapeutic role of endoscopic mucosal resection (EMR) in BE is rapidly growing. Objective. The aim of this study was to check the accuracy of biopsy for precise histopathologic diagnosis of dysplasia and neoplasia, compared to EMR in patients having BE and related superficial esophageal lesions. Methods. A total of 48 patients with previously diagnosed BE (36 men, 12 women, mean age 49.75 ± 13.3 years) underwent routine surveillance endoscopic examination. Biopsies were taken from superficial lesions, if present, and otherwise from BE segments. Then, EMR was performed within three weeks. Results. Biopsy based histopathologic diagnoses were nondysplastic BE (NDBE), 22 cases; low-grade dysplasia (LGD), 14 cases; high-grade dysplasia (HGD), 8 cases; intramucosal carcinoma (IMC), two cases; and invasive adenocarcinoma (IAC), two cases. EMR based diagnosis differed from biopsy based diagnosis (either upgrading or downgrading) in 20 cases (41.67%), (Kappa = 0.43, 95% CI: 0.170-0.69). Conclusions. Biopsy is not a satisfactory method for accurate diagnosis of dysplastic or neoplastic changes in BE patients with or without suspicious superficial lesions. EMR should therefore be the preferred diagnostic method in such patients.

  12. Morfología del linfocentro cervical superficial de la llama (Lama glama Morphology of the superficial cervical lymph center of the llama (Lama glama

    Directory of Open Access Journals (Sweden)

    L Gauna Añasco

    2005-12-01

    Full Text Available Se estudió el linfocentro cervical superficial de la llama realizándose disecciones macroscópicas y microscopía óptica, para brindar las bases científicas de la circulación linfática de regiones anatómicas del miembro torácico de interés bromatológico. Las piezas anatómicas se obtuvieron de animales anestesiados previamente, destinados a faena. Las mismas fueron inyectadas con masa de Gerota modificada13, y luego fijadas con soluciones de formol al 10 % y ácido fénico al 3%. Para microscopía óptica se emplearon los métodos tradicionales. Los vasos linfáticos aferentes provienen de las regiones de la mano, antebrazo, brazo. Los linfonódulos muestran superficie lisa y menor tamaño en comparación con otras especies. Histológicamente los nódulos linfáticos no presentan el patrón característico de médula, corteza y paracorteza. Se observa que presentan nódulos linfáticos, tejido linfático anodular denso y tejido linfoideo difuso distribuido a través de los nódulos linfáticos primarios y secundarios. La cápsula no presenta fibras de músculo liso. Los senos peritrabeculares están rodeados por tejido linfoideo difuso.The superficial cervical lymph center of the llama was studied trough macroscopic dissections and light microscopy, offering scientific bases about lymph drainage from anatomical regions which belong to the forelimb with importance for inspecting meat. The thoracic limbs were injected with modified Gerota's mass; they were fixed by using a 10% buffered formalin solution. For light microscopy traditional methods were used. The afferent lymph vessels come from forefoot, antebrachial, brachial regions. The lymph nodes have flat surface and are smaller than those of other species. They have not a characteristic pattern of cortex, paracortex and medulla. Anyway they present lymph nodules, dense anodular lymphatic and diffuse lymphatic tissues distributed through the primary and secondary lymph nodules. The

  13. Superficial siderosis of the central nervous system due to brachial plexus injury: a case report; Siderose superficial do sistema nervoso central por lesao do plexo braquial: relato de caso

    Energy Technology Data Exchange (ETDEWEB)

    Setogutti, Enio Tadashi; Cassuriaga, Jefferson; Valduga, Simone Gianella [Fundacao Universitaria de Cardiologia, Porto Alegre, RS (Brazil). Instituto de Cardiologia. Setor de Ressonancia Magnetica]. E-mails: pesquisa@cardiologia.org.br; editoracao-pc@cardiologia.org.br; Lorenzzoni, Pablo Longhi; Severgnini, Giancarlo Muraro [Fundacao Universitaria de Cardiologia, Porto Alegre, RS (Brazil). Instituto de Cardiologia; Feldman, Carlos Jader [Fundacao Universitaria de Cardiologia, Porto Alegre, RS (Brazil). Instituto de Cardiologia. Setor de Radiologia

    2005-10-15

    Superficial siderosis can be caused by hemosiderin deposition o the leptomeninges and subpial layers of the neuro-axis due to recurrent subarachnoid haemorrhage. Probable intrathecal bleeding sites must be investigated. In ut t 50% of the patients the bleeding source may be identified and the progression of the disease can be interrupted. In this study, the authors present a case of superficial siderosis of the central nervous system developed two decades after a traumatic lesion of the brachial plexus.(author)

  14. Endurecimiento superficial de aceros y fundiciones mediante láser de Nd: YAG

    Directory of Open Access Journals (Sweden)

    Sagaró, R.

    2001-10-01

    Full Text Available This work relates with heat treatment by laser of metallic surfaces. The hardening of steels AISI 1045, W1, W112 and flake and nodular cast irons was carried out using a Nd: YAG laser. Operation parameters of laser like beam power (P and traverse speed of the laser Spot (V are closely related to the depth of hardening. The authors present some analyses on metallographic studies. In all cases Vickers microhardness valves of about 500-900 HV (three or four times higher than original substrates. Relations between microhardness and depth of hardening are presented for the processed materials. Experimental results showed that the scan speed increase produces a decrease on depth of hardening as reported by others researchers. On the other hand, the samples with higher carbon content show lower hardenining depth. In addition, tribological tests were carried out. These tests show wear resistance when compared with conventional heat treatment. The frictional coefficient decrease in the samples with laser surface treatment.

    En el trabajo se presentan los resultados del tratamiento térmico superficial, con técnica láser, de superficies metálicas. Con el empleo de un láser de Nd:YAG se procedió al endurecimiento superficial de los aceros AISI 1045, W1, W112 y fundiciones de tipo laminar y nodular. Se presentan los resultados del tratamiento térmico superficial atendiendo al parámetro velocidad de barrido del haz de láser (V. De igual forma se estudian las microestructuras metalográficas obtenidas. En todos los casos, se obtienen valores de microdureza Vickers que oscilan entre los 500-900 HV (incrementos de tres-cuatro veces respecto al material base. Los resultados obtenidos permiten afirmar que, en todos los casos estudiados, el incremento de la velocidad de barrido provocó una disminución de la profundidad de la capa endurecida, en correspondencia con otros resultados expuestos en la literatura especializada. Las experiencias del

  15. DaVinci's Mona Lisa entering the next dimension.

    Science.gov (United States)

    Carbon, Claus-Christian; Hesslinger, Vera M

    2013-01-01

    For several of Leonardo da Vinci's paintings, such as The Virgin and Child with St Anne or the Mona Lisa, there exist copies produced by his own studio. In case of the Mona Lisa, a quite exceptional, rediscovered studio copy was presented to the public in 2012 by the Prado Museum in Madrid. Not only does it mirror its famous counterpart superficially; it also features the very same corrections to the lower layers, which indicates that da Vinci and the 'copyist' must have elaborated their panels simultaneously. On the basis of subjective (thirty-two participants estimated painter-model constellations) as well as objective data (analysis of trajectories between landmarks of both paintings), we revealed that both versions differ slightly in perspective. We reconstructed the original studio setting and found evidence that the disparity between both paintings mimics human binocular disparity. This points to the possibility that the two Giocondas together might represent the first stereoscopic image in world history.

  16. Micoses superficiais na cidade de Manaus, AM, entre março e novembro/2003 Superficial mycoses in the City of Manaus/AM between March and November/2003

    Directory of Open Access Journals (Sweden)

    José Augusto Almendros de Oliveira

    2006-06-01

    Full Text Available FUNDAMENTOS: Micoses superficiais estritas são infecções fúngicas que se localizam nas camadas superficiais da pele e seus anexos. As micoses superficiais cutâneas representadas pelas dermatofitoses e candidíases podem ultrapassar a camada córnea da pele. Na região amazônica possuem incidência elevada. OBJETIVOS: Estudar as micoses superficiais, estritas e cutâneas, diagnosticadas sob o ponto de vista epidemiológico e micológico. PACIENTES E MÉTODOS: Pacientes com suspeita clínica de micoses superficiais submetidos a exame micológico no período de março a novembro de 2003 no Laboratório de Micologia Médica/CPCS/INPA. RESULTADOS: Foram realizados 394 exames, tendo 256 apresentado diagnóstico positivo. As micoses mais incidentes foram onicomicoses (135 e pitiríase versicolor (98. Malassezia spp. (77 e Candida spp. (72 foram os agentes fúngicos mais isolados. Tinea capitis apresentou maior ocorrência nos pré-escolares (3, e onicomicoses em adultos (94. O sexo feminino foi o mais acometido (91. Todas as classes sociais foram infectadas, com predominância da C (37. CONCLUSÃO: Onicomicoses e pitiríase versicolor acometeram sobretudo adultos. A Tinea capitis ocorre principalmente, em crianças. As micoses superficiais apresentaram mais incidentes nas mulheres. Malassezia spp. e Candida spp. foram os agentes mais isolados.BACKGROUND - Restricted superficial mycoses are fungal infections that appear on the skin superficial layers and their adnexa. However skin superficial mycoses represented by dermatophytoses and candidiasis can invade the corneal layer. This type of mycosis has a high incidence in the Amazon region. OBJECTIVES - To study the restricted superficial mycoses under the epidemiological and mycological point of view. PATIENTS AND METHODS - Patients presenting clinical suspicion of superficial mycoses submitted to mycological examination from March to November 2003 at the Clinical Mycology Laboratory

  17. Effects of deep and superficial experimentally induced acute pain on muscle sympathetic nerve activity in human subjects

    National Research Council Canada - National Science Library

    A. R. Burton; I. Birznieks; P. S. Bolton; L. A. Henderson; V. G. Macefield

    2009-01-01

    ...), whereas deep pain is believed to cause vasodepression. To date, no studies have addressed whether deep or superficial pain produces such differential effects on muscle sympathetic nerve activity (MSNA...

  18. Study of the mechanisms involved in the laser superficial hardening process of metallic alloys; Estudo dos mecanismos envolvidos no processo de endurecimento superficial a laser de ligas metalicas

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Edmara Marques Rodrigues da

    2001-07-01

    The laser superficial hardening process of a ferrous alloy (gray cast iron) and of an aluminum-silicon alloy was investigated in this work. These metallic alloys are used in the automobile industry for manufacturing cylinders and pistons, respectively. By application of individual pulses and single tracks, the involved mechanisms during the processing were studied. Variables such as energy density, power density, temporal width, beam diameter on the sample surface, atmosphere of the processing region, overlapping and scanning velocity. The hardened surface was characterized by optical and scanning electronic microscopy, dispersive energy microanalysis, X-ray mapping, X-ray diffraction, and measurements of roughness and Vickers microhardness. Depending on the processing parameters, it is possible to obtain different microstructures. The affected area of gray cast iron, can be hardened by remelting or transformation hardening (total or partial) if the reached temperature is higher or not that of melting temperature. Laser treatment originated new structures such as retained austenite, martensite and, occasionally, eutectic of cellular dendritic structure. Aluminum-silicon alloy does not have phase transformation in solid state, it can be hardened only by remelting. The increase of hardness is a function of the precipitation hardening process, which makes the silicon particles smaller and more disperse in the matrix. Maximal values of microhardness (700-1000 HV) were reached with the laser treatment in gray cast iron samples. The initial microhardness is of 242 HV. For aluminum-silicon alloy, the laser remelting increases the initial microhardness of 128 HV to the range of 160-320 HV. The found results give a new perspective for using the CLA/IPEN's laser in the heat treatment area. Besides providing a higher absorptivity to the materials, compared with the CO{sub 2} laser, and optical fiber access, the superficial hardening with Nd:YAG laser, depending on the

  19. The effect of superficial gas velocity on wavy films and its use in enhancing the performance of falling film reactors

    Energy Technology Data Exchange (ETDEWEB)

    Talens-Alesson, F.I. [TALENCO Chemical Engineering Consulting, Hospitalet de Llobregat (Spain)

    2000-07-01

    Mass transfer in co-current downward annular flow depends on the amount of liquid carried by the waves. The thickness of the wavy portion of the liquid film increases with the superficial gas velocity. By calculating superficial friction factors from simple pressure drop experiments, an estimate of the velocity at which the maximum development of waviness is achieved can be obtained, and optimized performance conditions can be found. (orig.)

  20. Pattern and morphogenesis of presumptive superficial mesoderm in two closely related species, Xenopus laevis and Xenopus tropicalis.

    Science.gov (United States)

    Shook, David R; Majer, Christina; Keller, Ray

    2004-06-01

    The mesoderm, comprising the tissues that come to lie entirely in the deep layer, originates in both the superficial epithelial and the deep mesenchymal layers of the early amphibian embryo. Here, we characterize the mechanisms by which the superficial component of the presumptive mesoderm ingresses into the underlying deep mesenchymal layer in Xenopus tropicalis and extend our previous findings for Xenopus laevis. Fate mapping the superficial epithelium of pregastrula stage embryos demonstrates ingression of surface cells into both paraxial and axial mesoderm (including hypochord), in similar patterns and amounts in both species. Superficial presumptive notochord lies medially, flanked by presumptive hypochord and both overlie the deep region of the presumptive notochord. These tissues are flanked laterally by superficial presumptive somitic mesoderm, the anterior tip of which also appears to overlay the presumptive deep notochord. Time-lapse recordings show that presumptive somitic and notochordal cells move out of the roof of the gastrocoel and into the deep region during neurulation, whereas hypochordal cells ingress after neurulation. Scanning electron microscopy at the stage and position where ingression occurs suggests that superficial presumptive somitic cells in X. laevis ingress into the deep region as bottle cells whereas those in X. tropicalis ingress by "relamination" (e.g., [Dev. Biol. 174 (1996) 92]). In both species, the superficially derived presumptive somitic cells come to lie in the medial region of the presumptive somites during neurulation. By the early tailbud stages, these cells lie at the horizontal myoseptum of the somites. The morphogenic pathway of these cells strongly resembles that of the primary slow muscle pioneer cells of the zebrafish. We present a revised fate map of Xenopus, and we discuss the conservation of superficial mesoderm within amphibians and across the chordates and its implications for the role of this tissue in

  1. Common bean cultivars response to lime surface application under no tillage systemResposta de cultivares de feijoeiro comum à calagem superficial em semeadura direta

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    Carlos Alexandre Costa Crusciol

    2012-08-01

    Full Text Available Soil acidity in no tillage system, if not in high situations, can be neutralized by lime surface application, improving mineral nutrition and crop yield. Aiming to evaluate the agronomic performance of common bean cultivars, to surface lime application, in no tillage system, an experiment was conducted in Oxisol, Botucatu Municipal District, São Paulo State, Brazil. The experimental design was a complete randomized block in split plot with four replications, where the plots were formed by common bean cultivars (Carioca, IAC Carioca Eté, Pérola, IAPAR 81 e Campeão 2 and subplots consisted of surface application of dolomitic limestone (zero, 1.8 t ha-1, 3.6 t ha-1 and 5.4 t ha-1. The surface lime application on the soil occurred in October 2002 and subsequently the sequence millet (spring – beans (summer – oat (autumn-winter were planted under rainfed conditions. Bean cultivars sowing were done on December 17, 2003. It can be concluded that there is influence of cultivars and limestone surface application under no tillage, where IAPAR 81 showed better grain yield with the increase of lime rates, obtaining values of 2,025 kg ha-1 without the lime application to 2,655 kg ha-1 with 5.4 t ha-1 lime rate, obtaining 31% yield increase. A acidez do solo no sistema de semeadura direta, caso não se encontre em situações elevadas, pode ser resolvida com aplicação superficial de calcário, melhorando a nutrição mineral e a produtividade das culturas. Com o objetivo de avaliar o desempenho agronômico de cultivares de feijoeiro, em razão da aplicação superficial de calcário, em semeadura direta, foi realizado um experimento num Latossolo Vermelho distrófico, em Botucatu (SP. O delineamento experimental foi o de blocos casualizados, em esquema de parcelas subdivididas com quatro repetições, onde as parcelas foram formadas por cultivares de feijão comum (Carioca, IAC Carioca Eté, Pérola, IAPAR 81 e Campeão 2 e as subparcelas constitu

  2. A COMPARATIVE STUDY ON THE EFFECTS OF SUPERFICIAL HEATING AND COOLING APPLICATION OVER THE HAMSTRING PRIOR TO STRETCHING IN NORMAL INDIVIDUALS

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    V. Srikanth Babu

    2013-04-01

    Full Text Available Background: Prior to stretching the muscle need to warm up or relaxation to obtain grater extent of the joint rangeof motion. Materials and Methods: The study was carried out with Sixteen healthy male subjects, in outpatientdepartment of Kugler physio & pain care clinic, Guntur. Measured knee joint range of motion in pre-treatment,After applying superficial heat, superficial heating plus static stretch and superficial cooling and superficial cooingplus static stretch and compared the obtained range of motions. Results: While applying the superficial heatingand superficial cooling plus stretching, there is a greater extent of range of motion obtained compare to the othermodalities. Conclusion: Superficial heating modality is effective in conjunction with static stretch to improve themuscle flexibility as well as joint range of motion.

  3. Adsorção de metais pesados após calagem superficial em um Latossolo Vermelho sob sistema de plantio direto Heavy metals adsorption after surface lime in a Rhodic Hapludox under no-tillage system

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    Helio Antonio Wood Joris

    2012-03-01

    Full Text Available A influência da correção da acidez do solo sob sistema plantio direto (SPD na adsorção de metais pesados é pouco conhecida. Este trabalho teve o objetivo de avaliar a adsorção de cádmio (Cd, níquel (Ni, cobre (Cu e zinco (Zn em um Latossolo Vermelho distrófico textura argilosa sem e com calagem superficial (4,5 t ha-1 de calcário, manejado no SPD. O experimento foi instalado em 1998, no município de Ponta Grossa, PR. Após 10 anos, amostras de solo foram coletadas nas camadas 0-5; 5-10 e 10-20 cm e foram adicionadas doses crescentes de 0 a 180 mg L-1 de Cd e Ni e de 0 a 180 mg L-1 de Cu e Zn, em sistemas competitivos. Após equilíbrio, foi determinada a quantidade de metais adsorvidos. A calagem superficial no SPD aumentou o pH do solo em todas as camadas estudadas, resultando em incremento na adsorção de Cu, Zn, Cd e Ni, principalmente, na camada superficial. Ainda, a calagem alterou a dinâmica dos metais pesados no solo, sendo uma estratégia eficiente com potencial para minimizar problemas ambientais com Cu, Zn, Cd e Ni no SPD.There are few researches about control of soil acidy and adsorption of heavy metals in no-till system (NTS. The aim of this study was evaluate the cadmium (Cd, nickel (Ni, copper (Cu and zinc (Zn adsorption in a Rhodic Hapludox, clayey, without and with surface liming (4.5 t ha-1 under NTS. The experiment was established in Ponta Grossa, PR, in 1998. After 10 years, soil samples were collected to adsorption study. Doses of 0 to 180 mg L-1 of Cd and Ni, and of 0 to 180 mg L-1 of Cu and Zn were added, in competitive systems. After the equilibrium, the quantity of heavy metals was measured. Surface liming increased soil pH in all studied layers, resulting in improve of Cu, Zn, Cd and Ni adsorptions, mostly in the superficial layer. Moreover, surface liming changed dynamics of heavy metals in soil, being an efficient strategy to minimize environmental problems associate with Cd, Ni, Cu and Zn in NTS.

  4. Clinical, microscopic and microbial characterization of exfoliative superficial pyoderma-associated epidermal collarettes in dogs.

    Science.gov (United States)

    Banovic, Frane; Linder, Keith; Olivry, Thierry

    2017-02-01

    The microscopic and microbial features of the spreading epidermal collarettes of canine exfoliative superficial pyodermas are poorly characterized. To characterize the clinical, cytological, microbial and histopathological features of epidermal collarettes in five dogs. Cytology from the margins of collarettes identified neutrophils, extracellular and intracellular cocci within neutrophils but no acantholytic keratinocytes. Phenotypic and genotypic analyses identified all bacterial isolates from the centre and margin of five epidermal collarettes as Staphylococcus pseudintermedius. PCRs of collarette-associated Staphylococcus strains did not amplify genes encoding for the known exfoliative toxins expA and expB, whereas the predicted siet and speta amplification products were detected in all isolates. Microscopically, epidermal collarettes consisted of interfollicular, epidermal spongiotic pustules. Advancing edges of lesions consisted of peripheral intracorneal clefts in the deep stratum disjunctum above an intact stratum compactum; they contained lytic neutrophil debris, bacterial cocci and fluid, but no acantholytic keratinocytes. This intracorneal location of bacteria was confirmed using Gram stains and fluorescent in situ hybridization with eubacterial- and Staphylococcus-specific probes. The indirect immunofluorescence staining patterns of desmoglein-1, desmocollin-1, claudin-1, E-cadherin and corneodesmosin were discontinuous and patchy in areas of spongiotic pustules, whereas only that of corneodesmosin was weaker and patchy in advancing collarette edges. Epidermal collarettes represent unique clinical and histological lesions of exfoliative superficial pyodermas that are distinct from those of impetigo and superficial bacterial folliculitis. The characterization of possible causative staphylococcal exfoliatin proteases and the role of corneodesmosin in collarette pathogenesis deserve further investigation. © 2016 ESVD and ACVD.

  5. Efectos del entrenamiento en superficies inestables sobre el equilibrio y funcionalidad en adultos mayores

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    Juan C. López S

    2015-02-01

    Full Text Available Objetivo: determinar los efectos de un programa de ocho semanas de entrenamiento en superficies inestables con y sin trabajo de fuerza, sobre el equilibrio y la capacidad funcional en adultos mayores de 60 años, pertenecientes al programa “Escuelas populares del deporte” del inder Medellín. Metodología: se llevó a cabo un estudio experimental simple, ciego y enmascarado con asignación al azar de 34 sujetos a dos grupos de intervención con y sin trabajo de fuerza sobre superficies inestables; se midió el equilibrio unipodal, bipodal con ojos abiertos y cerrados, además de pruebas funcionales como Up and Go, arm curl y chair test. Resultados: las intervenciones con y sin trabajo de fuerza mejoraron el equilibrio total en 57,0 y 69,5 segundos respectivamente, sin diferencias estadísticamente significativas en la comparación entre los grupos (p = 0,13. Se mejoró la velocidad de la marcha con ambas intervenciones sin diferencias intragrupos estadísticamente significativas (p = 0,33 pero importantes para la práctica. Conclusión: ambas intervenciones mejoran el equilibrio, sin embargo existen diferencias importantes para la práctica a favor del programa sobre superficies inestables sin trabajo de fuerza, pues la intervención tiene un mejor efecto sobre el equilibrio unipodal y bipodal tanto con ojos abiertos como con cerrados.

  6. Efficiency in supercritical fluid chromatography with different superficially porous and fully porous particles ODS bonded phases.

    Science.gov (United States)

    Lesellier, E

    2012-03-09

    The chromatographic efficiency, in terms of plate number per second, was dramatically improved by the introduction of sub-two microns particles with ultra-high pressure liquid chromatography (UHPLC). On the other hand, the recent development of superficially porous particles, called core-shell or fused-core particles, appears to allow the achievement of the same efficiency performances at higher speed without high pressure drops. CO₂-based mobile phases exhibiting much lower viscosities than aqueous based mobile phases allow better theoretical efficiencies, even with 3-5 μm particles, but with relative low pressure drops. They also allow much higher flow rates or much longer columns while using conventional instruments capable to operate below 400 bar. Moreover, the use of superficially porous particles in SFC could enhance the chromatographic performances even more. The kinetic behavior of ODS phases bonded on these particles was studied, with varied flow rates, outlet (and obviously inlet) pressures, temperatures, by using a homologous series (alkylbenzenes) with 10% modifier (methanol or acetonitrile) in the carbon dioxide mobile phase. Results were also compared with classical fully porous particles, having different sizes, from 2.5 to 5 μm. Superior efficiency (N) and reduced h were obtained with these new ODS-bonded particles in regards to classical ones, showing their great interest for use in SFC. However, surprising behavior were noticed, i.e. the increase of the theoretical plate number vs. the increase of the chain length of the compounds. This behavior, opposite to the one classically reported vs. the retention factor, was not depending on the outlet pressure, but on the flow rate and the temperature changes. The lower radial trans-column diffusion on this particle types could explain these results. This diffusion reduction with these ODS-bonded superficially porous particles seems to decrease with the increase of the residence time of compounds.

  7. Dissociation of μ- and δ-opioid inhibition of glutamatergic synaptic transmission in superficial dorsal horn

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    Vaughan Christopher W

    2010-10-01

    Full Text Available Abstract Background There is anatomical and behavioural evidence that μ- and δ-opioid receptors modulate distinct nociceptive modalities within the superficial dorsal horn. The aim of the present study was to examine whether μ- and δ-opioid receptor activation differentially modulates TRP sensitive inputs to neurons within the superficial dorsal horn. To do this, whole cell patch clamp recordings were made from lamina I - II neurons in rat spinal cord slices in vitro to examine the effect of opioids on TRP agonist-enhanced glutamatergic spontaneous miniature excitatory postsynaptic currents (EPSCs. Results Under basal conditions the μ-opioid agonist DAMGO (3 μM reduced the rate of miniature EPSCs in 68% of neurons, while the δ- and κ-opioid agonists deltorphin-II (300 nM and U69593 (300 nM did so in 13 - 17% of neurons tested. The TRP agonists menthol (400 μM and icilin (100 μM both produced a Ca2+-dependent increase in miniature EPSC rate which was unaffected by the voltage dependent calcium channel (VDCC blocker Cd2+. The proportion of neurons in which deltorphin-II reduced the miniature EPSC rate was enhanced in the presence of icilin (83%, but not menthol (0%. By contrast, the proportion of DAMGO and U69593 responders was unaltered in the presence of menthol (57%, 0%, or icilin (57%, 17%. Conclusions These findings demonstrate that δ-opioid receptor activation selectively inhibits inputs activated by icilin, whereas μ-opioid receptor activation has a more widespread effect on synaptic inputs to neurons in the superficial dorsal horn. These findings suggest that δ-opioids may provide a novel analgesic approach for specific, TRPA1-like mediated pain modalities.

  8. Anatomical study of superficial fascia and localized fat deposits of abdomen

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    Pramod Kumar

    2011-01-01

    Full Text Available Background: The development of liposuction and abdominoplasty has renewed interest in the anatomy of the localized fat deposits (LFD areas of the abdomen. This study aims at ascertaining the gross anatomy of superficial fascia and the localized fat deposits of abdomen. Materials and Methods: Eight adult cadavers (four males and four females were dissected. Attachments, number of layers of fascia and colour, shape and maximum size of the fat lobules in loin, and upper and lower abdomen were noted. Thickness of deep membranous layer of superficial fascia of upper abdomen and lower abdomen were measured by metal casing electronic digital calipers, with resolution being 10 μm. The independent sample t-test, ANOVA for comparison and Pearson coefficient for correlation were used. Results: Superficial fascia of the abdomen was multilayered in the midline and number of layers reduced laterally. The shape, size, color, and arrangement of fat lobules were different in different locations. The thickness of the fascia of the lower abdomen in males (mean 528.336 ± SE38.48 was significantly (P < 0.041 more than that in females. (Mean 390.822 ± SE36.24. Pearson correlation between thickness of the membranous layer of the upper and lower abdomen revealed moderately positive correlation (r=0.718; P<0.045. Conclusions: The LFD in the central region of the abdomen corresponds to the area of multilayered fascia with smaller fat lobules. The relatively thinner supporting fascia of the lower abdomen in females may be responsible for excessive bulges of the lower abdomen. The fat lobule anatomy at different sites under study was different.

  9. Deep and superficial skin scrapings from a feline immunodeficiency virus-positive cat.

    Science.gov (United States)

    Neel, Jennifer A; Tarigo, Jaime; Tater, Kathy C; Grindem, Carol B

    2007-03-01

    An 8-year-old, neutered male, domestic shorthair cat housed at the North Carolina State University, College of Veterinary Medicine, Laboratory Animal Research facility as part of a research colony was examined because of mulifocal skin lesions. The lesions consisted of patchy alopecia with mild crusting of the periauricular region, neck, and dorsum; periauricular excoriations; marked dorsal seborrhea and scaling; and generalized erythematous papules. A moderate amount of ceruminous exudate was present in both ear canals. Results of testing for feline immunodeficiency virus (FIV) were positive. An ear swab specimen and superficial and deep skin scrapings were obtained, mounted with oil on glass slides, and coverslipped for microscopic examination. Two populations of mites were observed: a large population of slender, long (approximately 200 microm), adult mites with long, tapering abdomens that comprised two-thirds of the total body length; and a smaller population of more translucent and shorter mites (approximately 100 microm) with wide, blunt abdomens that had prominent transverse ridges. The interpretation was demodicosis, with Demodex cati and D gatoi co-infection. Histologic sections of biopsies from skin lesions on the neck, dorsum, and periauricular area contained a mild perivascular and perifollicular inflammatory infiltrate composed predominantly of histiocytes, lymphocytes, and plasma cells. Diffusely within the follicular lumina and occasionally within the superficial keratin, a myriad of Demodex organisms were observed. Intrafollicular mites were compatible in appearance with D cati whereas those in the corneal layer were suggestive of D gatoi. Demodicosis is an uncommon disease of cats, and rare cases of dual infection have been documented, occasionally in FIV-infected cats. The dual infection emphasizes the importance of doing both superficial and deep skin scrapings and of recognizing the unique microscopic features of different Demodex mites.

  10. Tendon vibration attenuates superficial venous vessel response of the resting limb during static arm exercise

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    Ooue Anna

    2012-11-01

    Full Text Available Abstract Background The superficial vein of the resting limb constricts sympathetically during exercise. Central command is the one of the neural mechanisms that controls the cardiovascular response to exercise. However, it is not clear whether central command contributes to venous vessel response during exercise. Tendon vibration during static elbow flexion causes primary muscle spindle afferents, such that a lower central command is required to achieve a given force without altering muscle force. The purpose of this study was therefore to investigate whether a reduction in central command during static exercise with tendon vibration influences the superficial venous vessel response in the resting limb. Methods Eleven subjects performed static elbow flexion at 35% of maximal voluntary contraction with (EX + VIB and without (EX vibration of the biceps brachii tendon. The heart rate, mean arterial pressure, and rating of perceived exertion (RPE in overall and exercising muscle were measured. The cross-sectional area (CSAvein and blood velocity of the basilic vein in the resting upper arm were assessed by ultrasound, and blood flow (BFvein was calculated using both variables. Results Muscle tension during exercise was similar between EX and EX + VIB. However, RPEs at EX + VIB were lower than those at EX (P P vein in the resting limb at EX decreased during exercise from baseline (P vein at EX + VIB did not change during exercise. CSAvein during exercise at EX was smaller than that at EX + VIB (P vein did not change during the protocol under either condition. The decreases in circulatory response and RPEs during EX + VIB, despite identical muscle tension, showed that activation of central command was less during EX + VIB than during EX. Abolishment of the decrease in CSAvein during exercise at EX + VIB may thus have been caused by a lower level of central command at EX + VIB rather than EX. Conclusion Diminished central command induced by tendon

  11. The membranous layer of superficial fascia: evidence for its widespread distribution in the body.

    Science.gov (United States)

    Abu-Hijleh, M F; Roshier, A L; Al-Shboul, Q; Dharap, A S; Harris, P F

    2006-12-01

    A discrete membranous layer, "stratum membranosum", in human subcutaneous tissue is classically described as confined to the lower anterior abdominal wall and perineum and referred to as Scarpa's and Colles' fasciae, respectively. Evidence for its existence elsewhere in the body is scanty and therefore the present study was undertaken. Dissection of six embalmed adult cadavers, along with ultrasound imaging on four living subjects, were carried out to determine the existence, topography, and thickness of the membranous layer of superficial fascia in different regions of the body. In all six cadavers, a continuous layer of fibrous membrane in the superficial fascia was found consistently in all the dissected regions of the body and was also confirmed by ultrasonography. The arrangement and thickness of this membranous layer varied according to body region, body surface, and gender. It was thicker in the lower than in the upper extremity, on the posterior than anterior aspect of the body, and in females than in males. The mean thickness of the membranous layer ranged from 39 to 189 mum, being thickest in the leg and thinnest over the dorsum of the hand. The membranous layer was observed to have two or even three components in regions such as the breast, back, thigh, and arm and was seen to split, forming special compartments around subcutaneous major veins of upper and lower extremities, with fibrous septa extending to attach to the vessel wall. Functionally, the membranous superficial fascia may play a role in the integrity of the skin and support for subcutaneous structures particularly veins, by ensuring their patency. Understanding the topographic anatomy of this fascial layer may help explain body-contour deformities and provide the anatomic basis for surgical correction.

  12. Reduced vaginal elasticity, reduced lubrication, and deep and superficial dyspareunia in irradiated gynecological cancer survivors.

    Science.gov (United States)

    Stinesen Kollberg, Karin; Waldenström, Ann-Charlotte; Bergmark, Karin; Dunberger, Gail; Rossander, Anna; Wilderäng, Ulrica; Åvall-Lundqvist, Elisabeth; Steineck, Gunnar

    2015-05-01

    The purpose of this study was to examine whether or not vaginal elasticity or lack of lubrication is associated with deep or superficial dyspareunia. We investigated gynecological cancer survivors treated with radiation therapy. In a population-based study with 616 women answering a questionnaire (participation rate 78%) and who were treated with radiotherapy for gynecological cancer, we analyzed information from 243 women (39%) who reported that they had had intercourse during the previous six months. Analyses included log-binomial regression (relative risks) and multiple imputations by chained equations in combination with Bayesian Model Averaging, yielding a posterior probability value. Age range of this cancer recurrent-free group of women was 29-80. Dyspareunia affected 164 of 243 of the women (67%). One hundred thirty-four women (55%) reported superficial pain, 97 women (40%) reported deep pain, and 87 women (36%) reported both types of dyspareunia. The relative risk (RR) of deep dyspareunia was 1.87 (CI 1.41-2.49) with impaired vaginal elasticity compared to normal vaginal elasticity. Age and lower abdominal swelling were separate risk factors for deep dyspareunia. However, effects remain after adjusting for these factors. The relative risk of deep dyspareunia was almost twice as high with impaired vaginal elasticity compared to normal vaginal elasticity. If we wish to treat or even prevent deep dyspareunia in women with gynecological cancer, we may use our knowledge of the pathophysiology of deep dyspareunia and increasingly provide dilators together with instructions on how to use them for stretching exercises in order to retain vaginal elasticity. Results highlight the need for studies with more precise questions distinguishing superficial from deep dyspareunia so that in the future we may be able to primarily try to avoid reduced vaginal elasticity and secondarily reduce the symptoms.

  13. The flexural stiffness of superficial neuromasts in the zebrafish (Danio rerio) lateral line.

    Science.gov (United States)

    McHenry, Matthew J; van Netten, Sietse M

    2007-12-01

    Superficial neuromasts are structures that detect water flow on the surface of the body of fish and amphibians. As a component of the lateral line system, these receptors are distributed along the body, where they sense flow patterns that mediate a wide variety of behaviors. Their ability to detect flow is governed by their structural properties, yet the micromechanics of superficial neuromasts are not well understood. The aim of this study was to examine these mechanics in zebrafish (Danio rerio) larvae by measuring the flexural stiffness of individual neuromasts. Each neuromast possesses a gelatinous cupula that is anchored to hair cells by kinocilia. Using quasi-static bending tests of the proximal region of the cupula, we found that flexural stiffness is proportional to the number of hair cells, and consequently the number of kinocilia, within a neuromast. From this relationship, the flexural stiffness of an individual kinocilium was found to be 2.4 x 10(-20) N m2. Using this value, we estimate that the 11 kinocilia in an average cupula generate more than four-fifths of the total flexural stiffness in the proximal region. The relatively minor contribution of the cupular matrix may be attributed to its highly compliant material composition (Young's modulus of approximately 21 Pa). The distal tip of the cupula is entirely composed of this material and is consequently predicted to be at least an order of magnitude more flexible than the proximal region. These findings suggest that the transduction of flow by a superficial neuromast depends on structural dynamics that are dominated by the number and height of kinocilia.

  14. New methodology for mechanical characterization of human superficial facial tissue anisotropic behaviour in vivo.

    Science.gov (United States)

    Then, C; Stassen, B; Depta, K; Silber, G

    2017-02-21

    Mechanical characterization of human superficial facial tissue has important applications in biomedical science, computer assisted forensics, graphics, and consumer goods development. Specifically, the latter may include facial hair removal devices. Predictive accuracy of numerical models and their ability to elucidate biomechanically relevant questions depends on the acquisition of experimental data and mechanical tissue behavior representation. Anisotropic viscoelastic behavioral characterization of human facial tissue, deformed in vivo with finite strain, however, is sparse. Employing an experimental-numerical approach, a procedure is presented to evaluate multidirectional tensile properties of superficial tissue layers of the face in vivo. Specifically, in addition to stress relaxation, displacement-controlled multi-step ramp-and-hold protocols were performed to separate elastic from inelastic properties. For numerical representation, an anisotropic hyperelastic material model in conjunction with a time domain linear viscoelasticity formulation with Prony series was employed. Model parameters were inversely derived, employing finite element models, using multi-criteria optimization. The methodology provides insight into mechanical superficial facial tissue properties. Experimental data shows pronounced anisotropy, especially with large strain. The stress relaxation rate does not depend on the loading direction, but is strain-dependent. Preconditioning eliminates equilibrium hysteresis effects and leads to stress-strain repeatability. In the preconditioned state tissue stiffness and hysteresis insensitivity to strain rate in the applied range is evident. The employed material model fits the nonlinear anisotropic elastic results and the viscoelasticity model reasonably reproduces time-dependent results. Inversely deduced maximum anisotropic long-term shear modulus of linear elasticity is G∞,max(aniso)=2.43kPa and instantaneous initial shear modulus at an

  15. Sleep Fragmentation Hypersensitizes Healthy Young Women to Deep and Superficial Experimental Pain.

    Science.gov (United States)

    Iacovides, Stella; George, Kezia; Kamerman, Peter; Baker, Fiona C

    2017-07-01

    The effect of sleep deprivation on pain sensitivity has typically been studied using total and partial sleep deprivation protocols. These protocols do not mimic the fragmented pattern of sleep disruption usually observed in individuals with clinical pain conditions. Therefore, we conducted a controlled experiment to investigate the effect of sleep fragmentation on pain perception (deep pain: forearm muscle ischemia, and superficial pain: graded pin pricks applied to the skin) in 11 healthy young women after 2 consecutive nights of sleep fragmentation, compared with a normal night of sleep. Compared with normal sleep, sleep fragmentation resulted in significantly poorer sleep quality, morning vigilance, and global mood. Pin prick threshold decreased significantly (increased sensitivity), as did habituation to ischemic muscle pain (increased sensitivity), over the course of the 2 nights of sleep fragmentation compared with the night of normal sleep. Sleep fragmentation did not increase the maximum pain intensity reported during muscle ischemia (no increase in gain), and nor did it increase the number of spontaneous pains reported by participants. Our data show that sleep fragmentation in healthy, young, pain-free women increases pain sensitivity in superficial and deep tissues, indicating a role for sleep disruption, through sleep fragmentation, in modulating pain perception. Our findings that pain-free, young women develop hyperalgesia to superficial and deep muscle pain after short-term sleep disruption highlight the need for effective sleep management strategies in patients with pain. Findings also suggest the possibility that short-term sleep disruption associated with recurrent acute pain could contribute to increased risk for future chronic pain conditions. Copyright © 2017 American Pain Society. Published by Elsevier Inc. All rights reserved.

  16. Site-specific ultrasound reflection properties and superficial collagen content of bovine knee articular cartilage

    Energy Technology Data Exchange (ETDEWEB)

    Laasanen, Mikko S [Department of Clinical Physiology and Nuclear Medicine, Kuopio University Hospital and University of Kuopio, POB 1777, FIN-70211 Kuopio (Finland); Department of Surgery, Division of Orthopaedics and Traumatology, Jyvaeskylae Central Hospital, Keskussairaalantie 19, FIN-40620 Jyvaeskylae (Finland); Saarakkala, Simo [Department of Nuclear Medicine, Etelae-Savo Hospital District, Mikkeli Central Hospital, Porrassalmenkatu 35-37, 50100 Mikkeli (Finland); Toeyraes, Juha [Department of Clinical Neurophysiology, Kuopio University Hospital and University of Kuopio, POB 1777, FIN-70211 Kuopio (Finland); Rieppo, Jarno [Department of Anatomy, University of Kuopio, POB 1627, FIN-70211 Kuopio (Finland); Jurvelin, Jukka S [Department of Clinical Physiology and Nuclear Medicine, Kuopio University Hospital and University of Kuopio, POB 1777, FIN-70211 Kuopio (Finland); Department of Applied Physics, University of Kuopio, POB 1627, FIN-70211 Kuopio (Finland)

    2005-07-21

    Previous quantitative 2D-ultrasound imaging studies have demonstrated that the ultrasound reflection measurement of articular cartilage surface sensitively detects degradation of the collagen network, whereas digestion of cartilage proteoglycans has no significant effect on the ultrasound reflection. In this study, the first aim was to characterize the ability of quantitative 2D-ultrasound imaging to detect site-specific differences in ultrasound reflection and backscattering properties of cartilage surface and cartilage-bone interface at visually healthy bovine knee (n = 30). As a second aim, we studied factors controlling ultrasound reflection properties of an intact cartilage surface. The ultrasound reflection coefficient was determined in time (R) and frequency domains (IRC) at medial femoral condyle, lateral patello-femoral groove, medial tibial plateau and patella using a 20 MHz ultrasound imaging instrument. Furthermore, cartilage surface roughness was quantified by calculating the ultrasound roughness index (URI). The superficial collagen content of the cartilage was determined using a FT-IRIS-technique. A significant site-dependent variation was shown in cartilage thickness, ultrasound reflection parameters, URI and superficial collagen content. As compared to R and IRC, URI was a more sensitive parameter in detecting differences between the measurement sites. Ultrasound reflection parameters were not significantly related to superficial collagen content, whereas the correlation between R and URI was high. Ultrasound reflection at the cartilage-bone interface showed insignificant site-dependent variation. The current results suggest that ultrasound reflection from the intact cartilage surface is mainly dependent on the cartilage surface roughness and the collagen content has a less significant role.

  17. Tensión superficial: un modelo experimental con materiales sencillos

    OpenAIRE

    Szigety, Esteban; Viau, Javier E.; Tintori Ferreira, María Alejandra; Gibbs, Horacio

    2012-01-01

    En este trabajo se presenta una propuesta didáctica basada en una actividad experimental utilizando materiales de muy bajo costo, orientada a lograr que los alumnos comprendan e interpreten el fenómeno de tensión superficial conjuntamente con la importancia de la modelización en ciencias. Tiene como objetivo principal de enseñanza acercar al alumno a la mecánica de los fluidos estáticos y las fuerzas intermoleculares, combinando contenidos científicos con cuestiones cercanas al es...

  18. Biofuncionalización de superficies de CoCr con nano-patterning

    OpenAIRE

    2015-01-01

    En este trabajo se estudia la modificación y caracterización superficial de una aleación de CoCr con aplicación para stens cardiovasculares. Un stent es un dispositivo que se introduce en las arterias coronarias para solucionar problemas como la estenosis o la arteriosclerosis, enfermedades que producen una obstrucción del vaso sanguíneo debido a la acumulación de placa en las paredes. Las enfermedades cardiovasculares son la mayor causa de mortalidad en los países desarrollados. Durante l...

  19. Epidemiology of superficial and cutaneous mycosis in 5500 suspected patients in Tehran

    Directory of Open Access Journals (Sweden)

    Ayatollah Nasrollahi Omran

    2010-04-01

    Full Text Available "n Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:Arial; mso-bidi-theme-font:minor-bidi;} Background: Identification of the determatophytosis species and superficial mycosis agents may be useful in directing the survey for environmental and animal sources of infection to educate the danger of acquiring infections from infected persons and other animals. Based on this background the identification of cutaneous mycosis distribution was the main purpose."n"nMethods: From March 2005 to Feb 2009 we examined 5500 patients suspected to superficial and cutaneous mycosis referred to medical mycology labs in Tehran, Iran for Medical Mycology examination. Skin, hair and nail sampling were taken by scraping from patients and collected for diagnosis. Diagnosis was confirmed by direct microscopy and culture according to the mycology routine laboratory methods."n"nResults: A total of 2271 cases (41.3% suffered from superficial and cutaneous mycosis. The most common infections were dermatophytosis 1279 cases (56.31%, Tinea Versicolor 356 cases (15.47%, Erythersma 283 cases (12.46%, cutaneous candidiosis 243 cases (10.7% and sacrophytic cutaneous mycosis 110 cases (4.83%. Tichophyton mentagrophytes was the most common etiological agent with 198 cases (41.56%. The most common clinical type of cutaneous candidiasis was

  20. Expression of matrix metalloproteinases 2 and 9 in human gastric cancer and superficial gastritis

    Institute of Scientific and Technical Information of China (English)

    Clara; Luz; Sampieri; Sol; de; la; Pea; Mariana; Ochoa-Lara; Roberto; Zenteno-Cuevas; Kenneth; León-Córdoba

    2010-01-01

    AIM:To assess expression of matrix metalloproteinases 2(MMP2)and MMP9 in gastric cancer,superficial gastritis and normal mucosa,and to measure metalloproteinase activity.METHODS:MMP2 and MMP9 mRNA expression was determined by quantitative real-time polymerase chain reaction.Normalization was carried out using three different factors.Proteins were analyzed by quantitative gelatin zymography(qGZ).RESULTS:18S ribosomal RNA(18SRNA)was very highly expressed,while hypoxanthine ribosyltransferase-1(HPRT-1)was mode...

  1. A Technique of Superficial Medial Collateral Ligament Reconstruction Using an Adjustable-Loop Suspensory Fixation Device.

    Science.gov (United States)

    Deo, Shaneel; Getgood, Alan

    2015-06-01

    This report describes superficial medial collateral ligament reconstruction of the knee using a novel method of graft fixation with the ACL Tightrope RT (Arthrex, Naples, FL). After tibial fixation with either a standard interference screw or staple, femoral fixation of the semitendinosus tendon is performed with the adjustable-loop suspensory fixation device, which allows for both initial graft tensioning and re-tensioning after cyclical knee range of motion. This provides the ability for the graft to accommodate for resultant soft-tissue creep and stress relaxation, thereby allowing for optimal soft-tissue tension and reduction in laxity at the end of the procedure.

  2. Tension neuropathy of the superficial peroneal nerve: associated conditions and results of release.

    Science.gov (United States)

    Johnston, E C; Howell, S J

    1999-09-01

    We reviewed eight patients who sustained superficial peroneal nerve neuralgia after an inversion ankle sprain. Surgical exploration found anatomic abnormalities that tethered the nerve from movement during plantarflexion and inversion of the ankle. Most patients' pain improved dramatically after release and anterior transposition of the nerve. Seven joints also underwent arthroscopy, which showed intra-articular disease that was consistent with the original trauma. Five patients had reflex sympathetic dystrophy, three of which resolved after nerve release. Nerve conduction studies were not helpful. Careful physical examination and local nerve blocks were most important in making the diagnosis and prescribing treatment. All conservative measures should be exhausted before surgery is considered.

  3. Degeneración Basal versus Degeneración Superficial en la Condromalacia Rotuliana

    OpenAIRE

    López Alonso, A.; Cuevas Castresana, Carlos de las; Díaz Flores, L.; Alvares Argüelles, H.; Aznar Aznar, A.

    1990-01-01

    Se hace un estudio en base a las muestras tisulares procedentes de pacientes afectos de condromalacia rotuliana, artrosis y dos casos considerados como testigos. Los hallazgos morfológicos son bastantes similares en los casos de condromalacia rotuliana y artrosis, lo que parece indicar que la condromalacia puede considerarse como un estado preartrósico patelar, si bien en esta son más acusados los fenómenos de rarefacción de la matriz del cartílago superficial y medio de la ...

  4. Error intraobservador en el análisis paleohistológico de superficies craneofaciales

    OpenAIRE

    Brachetta Aporta, Natalia

    2016-01-01

    En el análisis histológico de las superficies óseas craneofaciales se registran rasgos microestructurales producidos por la actividad de modelado óseo, así como otros rasgos no vinculados al crecimiento normal (alteraciones tafonómicas). La identificación de las áreas producto de la actividad celular, así como la determinación de su distribución y su extensión total, puede estar sujeta a diversas fuentes de error. En este sentido, el objetivo del presente trabajo es evalua...

  5. Acupuncture Treatment of Chronic Superficial Gastritis by the Eight Methods of Intelligent Turtle

    Institute of Scientific and Technical Information of China (English)

    赵彩娇; 谢感共; 翁泰来; 卢献群; 陆美芬

    2003-01-01

    With the clinical manifestations and the point electric conduction volume as the indexes, the authorsobserved the immediate effects of the acupuncture treatment on chronic superficial gastritis with the pointsTurtle), which was compared with the effects in the control group treated with the points selectedaccording to syndrome-differentiation. A higher symptom improvement rate (P<0.01) and a higherchannel's balance-inverting rate were noticed in the former (P<0.01), indicating that Ling Gui Ba Fa cangive a better therapeutic results.

  6. Anesthetic management of a patient with Kimura′s disease for superficial parotidectomy

    Directory of Open Access Journals (Sweden)

    Dalim Kumar Baidya

    2011-01-01

    Full Text Available Kimura′s disease is a rare form of chronic eosinophilic inflammatory disease with vascular proliferation involving salivary gland, skin, lymph node, and kidney. Important anesthetic concerns include increased surgical bleeding due to its vascular nature, airway involvement by the mass leading to a possible difficult airway, allergic symptoms associated with high eosinophil count and elevated IgE level and nephrotic syndrome due to involvement of kidney by the inflammatory process. There is paucity of information in the literature on the anesthetic management of Kimura′s disease. We describe the anesthesia technique and review the literature of such a case posted for superficial parotidectomy.

  7. Análisis de la transferencia de calor entre un lecho fluidizado y superficies sumergidas

    OpenAIRE

    Mazza, Germán Delfor

    1993-01-01

    Durante los últimos años se han realizado numerosos esfuerzos en la investigación de los fenómenos involucrados en la transferencia de calor entre un lecho fluidizado y una superficie sumergida. Sin embargo, tanto desde el punto de vista experimental como en la formulación de expresiones predictivas, los resultados no pueden considerarse convergentes, hallándose una gran dispersión de información en la bibliografía específica. Como se desarrollará en detalle en los sucesivos capítulos de esta...

  8. Epidemiology, diagnosis and management of superficial mycoses: ours three years retrospective analysis

    Directory of Open Access Journals (Sweden)

    Barbara Pieretti

    2013-04-01

    Full Text Available Mycotic infections of the skin, hair and nails are disorder with high prevalence. Dermatophytes are the most frequently etiologic agents followed by yeasts and non-dermatophyte moulds. The geographic distribution is variable because of migration, lifestyle and socio-economics conditions. In this study, based on ours three years retrospective data analysis, we evaluate the epidemiology of etiologic agents, diagnosis and management of superficial mycoses. Our data and our experience suggest the importance of this microbiological diagnosis and the role of the Clinical Microbiologist to assess with Dermatologist and Primary Care Phyisician an appropriate diagnostic and therapeutic plan.

  9. Analysis of superficial fluorescence patterns in nonmelanoma skin cancer during photodynamic therapy by a dosimetric model

    Science.gov (United States)

    Salas-García, I.; Fanjul-Vélez, F.; Arce-Diego, J. L.

    2016-03-01

    In this work the superficial fluorescence patterns in different nonmelanoma skin cancers and their photodynamic treatment response are analysed by a fluorescence based dosimetric model. Results show differences of even more than 50% in the fluorescence patterns as photodynamic therapy progresses depending on the malignant tissue type. They demonstrate the great relevance of the biological media as an additional dosimetric factor and contribute to the development of a future customized therapy with the assistance of dosimetric tools to interpret the fluorescence images obtained during the treatment monitoring and the differential photodiagnosis.

  10. Treatment of superficial thrombophlebitis. A comparative trial between placebo, Hirudoid cream and piroxicam gel.

    Science.gov (United States)

    Bergqvist, D; Brunkwall, J; Jensen, N; Persson, N H

    1990-01-01

    A prospective randomized trial on the treatment of superficial thrombophlebitis has been performed in 68 patients randomized to either Hirudoid cream, piroxicam gel or placebo. Both spontaneous and infusion thrombophlebitis were included. Treatment effect was evaluated using the status of thrombophlebitis, the thrombophlebitic area, pain intensity with a visual analogue scale, and side effects were registered. Both in the treatment groups and the placebo group there was a significant decrease of signs and symptoms during the treatment period. There was no statistical difference between the treatment groups and no difference between spontaneous and infusion thrombophlebitis.

  11. Estudio de interfases metal-tiol en superficies planas y nanopartículas

    OpenAIRE

    Corthey, Gastón

    2012-01-01

    Las nanopartículas (NPs) de metales nobles presentan gran interés tanto por sus propiedades básicas como por la amplia variedad de aplicaciones en las que se utilizan activamente. Para obtener NPs estables y evitar su aglomeración, es necesario utilizaragentes estabilizantes durante la síntesis. Estas moléculas se adsorben sobre la superficie de las NPs y evitan que estas interaccionen directamente con las partículas vecinas. Si bien existen diversas moléculas que pueden ser utilizadas para e...

  12. Very superficial ultrasound-assisted lipoplasty for the treatment of axillary osmidrosis.

    Science.gov (United States)

    Park, S

    2000-01-01

    Treatment of axillary osmidrosis has been mainly concerned with surgical excision of glandular tissues and involved major surgical procedures with high morbidities and many complications. Search for a less invasive procedure for axillary osmidrosis resulted in the use of liposuction. However, there have been controversies over the efficacy of this method. The problem was that liposuction could not effectively remove the apocrine gland located in the dermis and dermosubcutaneous junction. A high rate of residual malodor and dissatisfaction were reported. The author used ultrasound-assisted lipoplasty (UAL) in the very superficial plane to remove the apocrine gland located in the dermis and dermosubcutaneous junction. The purpose of this study was to prove the efficacy of the very superficial UAL (VSUAL) for the treatment of axillary osmidrosis. From December 1998 to December 1999, 21 consecutive patients underwent UAL in their axilla for axillary osmidrosis. The follow-up period ranged from 2 to 12 months (mean: 8 months). UAL was performed in the very superficial plane with an amplitude of 40%. The very superficial UAL (VSUAL) was done mainly in a withdrawing manner with the tip of the cannula against the skin. The UAL (VSUAL) was done aggressively until the skin changed slightly erythematous. The results were assessed subjectively and objectively, and classified as excellent, good, fair, and poor. Nineteen patients were graded as excellent and one patient as good. The total satisfaction rate was 95.2%. One patient complained of residual malodor in her left axilla. There were no cases of skin necrosis, hematoma, or seroma. Histology showed partial removal of the subcutaneous layer and deep dermis, and degenerative epithelial changes in the apocrine glands in the residual deep dermis. These microscopic findings meant near-total functional ablation of the apocrine gland in the axilla comparable to "flap-to-graft conversion" or surgical excision of axillary skin. The

  13. [Use of autologous superficial femoral artery in surgery for aortic prosthesis infection].

    Science.gov (United States)

    da Gama, A Dinis; Rosa, António; Soares, Mário; Moura, Carlos

    2003-01-01

    The surgical management of the aortic prosthesis infection still remains an enormous challenge for the vascular surgeon and a critical issue for the patient's integrity and life. Several techniques for its management have been devised and employed, along the years, but none of them revealed itself as totally satisfactory. This stimulates the creation of new alternatives. We present the clinical case of an infected aortic prosthesis in a 41 year old man, complicated by duodenal and ureteral erosion, in whom the autologous superficial femoral artery was employed successfully in the treatment of this most demanding situation.

  14. CAPACIDAD DEL TRÉBOL SUBTERRÁNEO DE PRODUCIR SEMILLAS VIABLES EN SUPERFICIE

    OpenAIRE

    2011-01-01

    Un factor importante para la selección de nuevas variedades de trébol subterráneo (ssp subterraneum) en el S.O. español es la capacidad de producir semillas viables en superficie, debido a la dificultad que encuentra el trébol subterráneo para poder enterrar sus semillas en los suelos duros y compactos de este área. En estas condiciones hemos comprobado que el peso de la semilla desciende considerablemente y que el carácter más significativo que hemos encontrado para medir esta capacidad es l...

  15. Capacidad del trébol subterráneo de producir semillas viables en superficie

    OpenAIRE

    2011-01-01

    Factor importante en la selección de nuevos cultivares de trébol subterráneo (ssp. subterraneumj en el S.O. español es la capacidad de producir semillas viables en superficie, debido a la dificultad que encuentra el trébol para enterrar sus semillas en los suelos duros y compactos de la zona. Para comprobar qué características más significativas presentan aquellos ecotipos que poseen este carácter, se ha realizado un ensayo comparativo entre cultivares!ecotipos con diferentes ciclos de florac...

  16. Hybridization quality in cervical cementum and superficial dentin using current adhesives.

    Science.gov (United States)

    Yuan, Yang; Shimada, Yasushi; Ichinose, Shizuko; Tagami, Junji

    2008-05-01

    The aim of this research was to determine the hybridization quality of adhesives to gingival cementum and close superficial dentin using both total-etch and self-etch, one-step and two-step adhesives in vitro. Five adhesive systems were used and evaluated in this study; three kinds of two-step adhesives (total-etch--Single Bond and self-etch--Clearfil SE Bond and Clearfil Protect Bond) and two one-step adhesives (Clearfil S3 Bond, G Bond). Fifteen extracted intact human third molars were used in this study. A diagonal cut which was approximately 45 degrees to the long axis of the roots, with the initiating point located 2 mm below the buccal enamel-cementum junction and ascending towards the pulp chamber was prepared on each tooth. Flat cervical cementum and dentin surfaces were ground with wet 600-grit silicon carbide paper, and bonded with one of the adhesives and finished by applying a flowable resin composite. After 24 h storage at 37 degrees C in water, the bonded assemblies were sectioned into approximately 1mm thick slabs. Two central slabs from each tooth were chosen. One slab was totally demineralized in 0.5 M EDTA and the other was not demineralized and immersed into 50% (w/v) solution of ammoniacal silver nitrate for 24 h, and successively exposed to photodeveloping solution for 8 h. The specimens were then processed for TEM observation. Both the stained demineralized silver unchallenged and unstained non-demineralized silver challenged resin-cervical cementum/proximal superficial dentin interface were observed and evaluated under a transmission electron microscope. The nanoleakage pathway and extent vary among the different adhesives used and also between the resin-cementum interface and resin-dentin interface. Two-step self-etch adhesives showed better hybridization quality both in cementum and proximal superficial dentin as compared to those of two-step total-etch adhesive and one-step self-etch adhesives. Two-step self-etch adhesives may provide a

  17. Control de calidad del diagnóstico de micosis superficial, 1997-2001

    OpenAIRE

    Urcia A., Flor; Guevara R., Miriam

    2001-01-01

    El laboratorio de Referencia Nacional de Micosis Superficial de la División de Micología - Instituto Nacional de Salud, desde 1997 hasta la fecha transfiere conocimientos teóricos y prácticos a través de cursos de capacitación y/o pasantías con el propósito de uniformizar el diagnóstico de este tipo de micosis en los laboratorios componentes del Sistema Nacional de la Red de laboratorios

  18. Congenital agenesis of the superficial posterior compartment calf muscles in a 13-month-old infant.

    Science.gov (United States)

    Kang, Jin Young; Jang, Dae-Hyun

    2014-11-01

    Muscle agenesis may induce cosmetic and functional deficits, particularly if the muscle is an axial limb or a large muscle. Limb muscle agenesis is a rare condition. Here, the authors report the case of a 13-mo-old girl with unilateral atrophic calf and gait abnormality. Magnetic resonance imaging confirmed agenesis of the posterior superficial compartment of the calf. The patient showed an out-toeing calcaneal gait and fibular length discrepancy secondarily during growth. Normal embryology and the differential diagnostic point of foot deformity as well as the clinical implications of calf agenesis are described.

  19. VARIACIÓN DE LA DUREZA SUPERFICIAL DE LOS RODILLOS RADIALES DE TRANSPORTADORES YACOBI.

    Directory of Open Access Journals (Sweden)

    Benigno Leyva de la Cruz

    2014-06-01

    Full Text Available Uno de los problemas medulares que ha afectado la productividad de las empresas en general, es el deterioro de las piezas de sus equipamientos tecnológicos por desgastes. En tal sentido, el estudio del comportamiento de la dureza superficial de dichos componentes durante su vida útil es de vital importancia, para poder recomendar una estructura eficiente, en cuanto al material y tratamiento a seleccionar. En este trabajo se realizó un estudio sobre la variación de la dureza superficial que experimentan los rodillos radiales de transportadores yacobi durante su período de explotación. Se determinó la influencia que tienen sobre la dureza el efecto combinado de la temperatura, la fuerza, el número de revoluciones, y el régimen de enfriamiento en el acero AISI 1045, laminado y templado. Se efectuó la determinación de la dureza superficial de 12 rodillos antes y después de la puesta en explotación con un durómetro portátil modelo 316 con rango de medición de 20 – 65 HRC y apreciación 1,5 puntos, asegurando la condición de normalidad para un nivel de confianza del 95 %. Los resultados obtenidos indicarón que la dureza de los rodillos son 47,5 HRC y 41,67 HRC antes y después de la explotación respectivamente. Además, el análisis de variancia efectuado refiere que existe diferencia significativa entre los valores de la dureza superficial antes y después de la puesta en explotación, lo que indicó la necesidad de realizar un análisis minucioso de las causas que están provocando dicha variación para mejorar la calidad del proceso.

  20. Estudio del comportamiento in vitro de osteoblastos cultivados sobre superficies de implantes dentales.

    OpenAIRE

    Velázquez Cayón, Rocío Trinidad

    2015-01-01

    La osteointegración es el proceso por el cual se produce una fijación rígida de material aloplástico, clínicamente asintomática, es conseguida y mantenida en hueso durante una carga funciona. En este proceso el papel principal está representado por los osteoblastos, células diferenciadas que sintetizan el colágeno y la sustancia fundamental ósea. Los osteoblastos tienen dos destinos posibles: ser rodeados por la matriz ósea que producen y pasan a ser osteocitos o permanecer en la superfici...

  1. Sobre o uso da variável raça-cor em estudos quantitativos

    Directory of Open Access Journals (Sweden)

    Jerônimo Oliveira Muniz

    2010-06-01

    Full Text Available A crescente inclusão da raça no debate público brasileiro, o aumento da sua disponibilidade em pesquisas de opinião e monitoramento e a facilidade de inclusão da variável em modelos estatísticos tem provocado um paradoxo na importância da raça. Ao mesmo tempo em que a cor da pele vem ganhando relevância no debate político, ela também vem perdendo a sua importância substantiva como um construto social complexo e dinâmico por ser utilizada de modo superficial, como uma categoria permanente e imutável em estudos quantitativos. Este ensaio bibliográfico discorre sobre os fatores que contribuem para essa tendência levando em conta a literatura nacional e internacional produzida nos últimos dez anos. Questiona-se o uso da raça em políticas públicas atentando-se para a sua confiabilidade, variabilidade e validade e discutem-se as limitações e possibilidades de uso da raça como um demarcador de diferenças. O ensaio conclui-se sugerindo uma agenda de pesquisa para aprimorar o entendimento e reduzir as incertezas associadas ao uso da variável "raça" em estudos quantitativos.

  2. SUPERFICIAL DIGITAL FLEXOR TENOTOMY AND SUPERIOR CHECK LIGAMENT DESMOTOMY IN HORSES: RADIO-METARCARPAL, METACARPOPHALANGEAL AND INTERPHALANGEAL GONIOMETRY TENOTOMIA DO MÚSCULO FLEXOR DIGITAL SUPERFICIAL E DESMOTOMIA ACESSÓRIA EM EQUINOS: GONIOMETRIA RADIOMETACARPIANA, METACARPOFALÂNGICA E INTERFALÂNGICA

    Directory of Open Access Journals (Sweden)

    Carlos Alberto Hussni

    2010-04-01

    Full Text Available The purpose of this study was to investigate the effects of the superficial digital tenotomy and the superior check ligament desmotomy on the radio-metacarpal, metacarpophalangeal, proximal and distal interphalangeal angles in horses. Under general anesthesia the superficial digital flexor tenotomy and superior check ligament desmotomy were performed, respectively, on the right and left forelimbs in nine horses. Before surgery and on 15th, 30th, and 60th postoperative days the radio-metacarpal, metacarpophalangeal, and proximal and distal interphalangeal angles were measured by radiographic examination. Tenotomy decreased significantly the metacarpophalangeal angle (mean ± standard deviation: preoperative – 140.7º ± 6.85; 60th day – 128.2º ± 5.93 and increased the distal interphalangeal angle (mean ± standard deviation: preoperative – 172.6 ± 1.87; 60th day – 167.6 ± 1.36. Desmotomy decreased the proximal interphalangeal angle (mean ± standard deviation: preoperative – 180.2º ± 5.43; 60th day- 197.3º ± 8.29. These surgical procedures did not change the radio-metacarpal angle. The superficial digital flexor tenotomy and the superior check ligament desmotomy cause different and significant changes in joint angles distal to the carpus.

    KEY WORDS: Desmotomy, horses, joint angles, tenotomy.
    A proposta deste estudo foi avaliar os efeitos da tenotomia do músculo flexor digital superficial e a desmotomia do seu ligamento acessório sobre os ângulos formados pelas faces dorsais radiometacarpiano, metacarpofalângico e interfalângicos proximal e distal em equinos. Realizaram-se em nove equinos a tenotomia do músculo flexor digital superficial no membro torácico direito (MTD e a desmotomia de seu ligamento acessório no membro torácico esquerdo (MTE. A goniometria radiológica foi procedida no pré-operatório e aos quinze, trinta e sessenta dias após as cirurgias. A tenotomia praticada no MTD diminuiu

  3. Colgajos de perforantes de las arterias epigástricas inferiores profunda y superficial Deep and superficial inferior epigastric artery perforator flaps

    Directory of Open Access Journals (Sweden)

    A. R. Gagnon

    2006-12-01

    Full Text Available Con el desarrollo de los colgajos miocutáneos de recto abdominal (TRAM, el abdomen inferior ha sido reconocido como la principal área dadora de tejidos autólogos de alta calidad, especialmente útiles en reconstrucción mamaria. Más recientemente la habilidad para obtener componentes adiposocutáneos similares sin sacrificar el músculo recto ha revolucionado el campo de la Cirugía Reconstructiva. El advenimiento de los colgajos de perforantes ha permitido a los cirujanos plásticos lograr los mismos buenos resultados estéticos que con los colgajos miocutáneos tradicionales, pero con un considerable descenso en la morbilidad del área donante. Con los colgajos de perforantes de la arteria epigástrica inferior profunda (DIEP y de la arteria epigástrica inferior superficial (SIEA, los pacientes han incrementado sus opciones de reconstrucción. Este artículo revisa la anatomía quirúrgica de la pared abdominal relativa a los colgajos SIEA y DIEP. Se explican detalladamente los pasos principales para la preparación preoperatoria, la técnica quirúrgica y los cuidados postoperatorios. Se discuten las ventajas y desventajas y se presen- tan los trucos técnicos que pueden ayudar a mejorar el resultado final. Además se ilustran con ayuda de casos clínicos las indicaciones típicas y atípicas.Following the development of the transverse rectus abdominis myocutaneous (TRAM flap, the lower abdomen has been recognized as a prime source of high quality autogenous tissue, especially useful in breast reconstruction. More recently, the ability to harvest a similar adipocutaneous component without sacrifice of the rectus muscle has revolutionized the field of reconstructive surgery. The advent of perforator flaps has allowed plastic surgeons to achieve the same highly esthetic results as with the former myocutaneous flaps while significantly decreasing the donor site morbidity. With the deep inferior epigastric artery perforator (DIEP flap and

  4. Racing performance of Thoroughbreds with superficial digital flexor tendonitis treated with desmotomy of the accessory ligament of the superficial digital flexor tendon: 332 cases (1989-2003).

    Science.gov (United States)

    Hu, Alaine J; Bramlage, Larry R

    2014-06-15

    To assess postoperative probability of racing, career longevity, and convalescent time in Thoroughbred racehorses with moderate to severe superficial digital flexor tendonitis (SDFT) in the forelimbs treated by desmotomy of the accessory ligament of the superficial digital flexor tendon (ie, superior check ligament desmotomy [SCLD]). Retrospective case series. 332 Thoroughbred racehorses with SDFT consecutively treated by means of SCLD. Medical records and racing records were reviewed to assess return to racing, number of races completed, time to first race, and lifetime performance. The horses were categorized as raced or unraced prior to and after surgery. Descriptive statistics including age and treated limb were also recorded. Of 332 horses, 228 (69%) returned to racing following injury and treatment. Seventy-eight of 118 (66%) horses that had not raced prior to injury and 150 of 214 (70%) horses that had raced prior to injury raced after treatment. Seventeen of 39 (44%) horses ≥ 5 years old raced following injury and treatment and 211 of 293 (72%) horses ≤ 4 years old returned to racing. There was no difference in the percentages of horses returning to racing for 2-, 3-, or 4-year olds. Postoperative infections occurred in 6 of the 332 (2%) horses. Median time to first race for horses that raced after surgery was 302 days (range, 48 to 1,120 days; mean ± SD, 341 ± 153 days), with a median of 8 starts/horse after surgery (range, 1 to 109 starts; mean ± SD, 14 ± 15.8 starts). Of 228 horses that returned to racing, 159 (70%) raced ≥ 5 times after surgery. Sex and treated limb did not have a significant effect on return to racing. However, horses ≥ 5 years old were significantly less likely to return to racing, compared with younger horses. In horses with unilateral SDFT and racing was not significantly different between horses treated bilaterally versus unilaterally. 228 of 332 (69%) horses with SDFT of the forelimb treated with SCLD successfully

  5. Tensão superficial estática de soluções aquosas com óleos minerais e vegetais utilizados na agricultura Surface tension of mineral oils and vegetable oils

    Directory of Open Access Journals (Sweden)

    Cristina G. de Mendonça

    2007-01-01

    Full Text Available O trabalho teve como objetivo avaliar a tensão superficial estática de soluções aquosas com formulações de óleos minerais e vegetais emulsionáveis utilizados como adjuvantes na agricultura. Os óleos minerais e vegetais, quando adicionados aos produtos fitossanitários, podem imprimir características desejáveis à calda de pulverização, como reduzir a tensão superficial em soluções aquosas, possibilitar maior contato da calda com a superfície vegetal ou reduzir o potencial de deriva durante as pulverizações. Foram testados os seguintes produtos comerciais: óleos minerais (Assist, Attach, Dytrol, Iharol, Mineral Oil, Spinner, Sunspray-E e Triona e óleos vegetais (Agrex'oil Vegetal, Crop Oil, Natur'l Óleo, Óleo Vegetal Nortox e Veget Oil, todos com registro de uso na agricultura. A tensão superficial das soluções aquosas foi avaliada em 11 concentrações para cada produto (0,025; 0,05; 0,1; 0,25; 0,5; 0,75; 1,0; 1,5; 2,0; 2,5 e 3,0% v/v. Essa propriedade dos óleos minerais e dos óleos vegetais foi estimada medindo-se a massa das gotas formadas na extremidade de uma bureta. Ao conjunto de dados obtidos para cada produto, na avaliação da tensão superficial, foram determinadas as análises de variância e de regressão, ajustando-se os dados ao Modelo de Mitscherlich. Entre os óleos minerais, destacaram-se os produtos: Assist, Dytrol, Iharol e Mineral Oil por apresentarem as menores tensões superficiais mínimas estimadas pelo Modelo, respectivamente, 29,255; 28,442; 26,097 e 28,584 mN m-1. Os óleos vegetais que apresentaram os menores valores de tensão superficial mínima estimados pelo Modelo, foram: Agrex' oil Vegetal (27,716 mN m-1, Natur'l óleo (28,216 mN m-1, Veget Oil (27,308 mN m-1 e Crop Oil (29,964 mN m-1.The aim of this work was to evaluate the surface tension of water emulsion with mineral oils and vegetable oils used as adjuvant. The mineral and vegetable oils when added to the agrochemicals can

  6. A Sintaxe da Janela

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    Luís Antônio Jorge

    1993-12-01

    Full Text Available A preocupação fundamenta! do trabalho é de caráter ontológico: esboçar o problema das significações apriorísticas e autônomas dos elementos que compõem a sintaxe arquitetônica. O trabalho elege um desses elementos: a janela. Este artigo parte da aproximação histórica entre a janela e a secção da pirâmide visual, construção imaginária da teoria da perspectiva renascentista. A consideração da janela na linguagem arquitetônica implica reconhecer uma ambigüidade essencial: a janela deve inserir-se ordenadamente no plano da parede - raciocínio típico da modenatura - mas também relacionar-se com a imagem vista através dela, que extrapola o plano, ressaltando a tridimensionalidade - herança da perspectiva renascentista, fundamentada no espaço euclidiano. Ver janela ou ver através da janela são alternativas que se colocam tanto ao observador interno ao edifício, quanto ao externo. Texto de duplaface, a sintaxe da janela versa sobre o relacionamento desses dois lados

  7. Blue Laser Imaging-Bright Improves Endoscopic Recognition of Superficial Esophageal Squamous Cell Carcinoma

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    Akira Tomie

    2016-01-01

    Full Text Available Background/Aims. The aim of this study was to evaluate the endoscopic recognition of esophageal squamous cell carcinoma (ESCC using four different methods (Olympus white light imaging (O-WLI, Fujifilm white light imaging (F-WLI, narrow band imaging (NBI, and blue laser imaging- (BLI- bright. Methods. We retrospectively analyzed 25 superficial ESCCs that had been examined using the four different methods. Subjective evaluation was provided by three endoscopists as a ranking score (RS of each image based on the ease of detection of the cancerous area. For the objective evaluation we calculated the color difference scores (CDS between the cancerous and noncancerous areas with each of the four methods. Results. There was no difference between the mean RS of O-WLI and F-WLI. The mean RS of NBI was significantly higher than that of O-WLI and that of BLI-bright was significantly higher than that of F-WLI. Moreover, the mean RS of BLI-bright was significantly higher than that of NBI. Furthermore, in the objective evaluation, the mean CDS of BLI-bright was significantly higher than that of O-WLI, F-WLI, and NBI. Conclusion. The recognition of superficial ESCC using BLI-bright was more efficacious than the other methods tested both subjectively and objectively.

  8. Blue Laser Imaging-Bright Improves Endoscopic Recognition of Superficial Esophageal Squamous Cell Carcinoma

    Science.gov (United States)

    Tomie, Akira; Yagi, Nobuaki; Kitae, Hiroaki; Majima, Atsushi; Horii, Yusuke; Kitaichi, Tomoko; Onozawa, Yuriko; Suzuki, Kentaro; Kimura-Tsuchiya, Reiko; Okayama, Tetsuya; Kamada, Kazuhiro; Katada, Kazuhiro; Uchiyama, Kazuhiko; Ishikawa, Takeshi; Takagi, Tomohisa; Naito, Yuji; Itoh, Yoshito

    2016-01-01

    Background/Aims. The aim of this study was to evaluate the endoscopic recognition of esophageal squamous cell carcinoma (ESCC) using four different methods (Olympus white light imaging (O-WLI), Fujifilm white light imaging (F-WLI), narrow band imaging (NBI), and blue laser imaging- (BLI-) bright). Methods. We retrospectively analyzed 25 superficial ESCCs that had been examined using the four different methods. Subjective evaluation was provided by three endoscopists as a ranking score (RS) of each image based on the ease of detection of the cancerous area. For the objective evaluation we calculated the color difference scores (CDS) between the cancerous and noncancerous areas with each of the four methods. Results. There was no difference between the mean RS of O-WLI and F-WLI. The mean RS of NBI was significantly higher than that of O-WLI and that of BLI-bright was significantly higher than that of F-WLI. Moreover, the mean RS of BLI-bright was significantly higher than that of NBI. Furthermore, in the objective evaluation, the mean CDS of BLI-bright was significantly higher than that of O-WLI, F-WLI, and NBI. Conclusion. The recognition of superficial ESCC using BLI-bright was more efficacious than the other methods tested both subjectively and objectively. PMID:27738428

  9. Evaluation of the litcit software for thermal simulation of superficial lasers such as hair removal lasers

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    Shirkavand A

    2007-01-01

    Full Text Available Background and Objectives : In this study, we evaluate LITCIT software for its application as a thermal simulation software for superficial hair removal laser systems. Materials and Methods: Two articles were used as our references. Complete information regarding the tissues, such as optical/thermal properties and geometrical modeling and also the laser systems such as wavelength, spot size, pulse duration and fluence were extracted from these texts. Then, this information regarding the tissues and systems was entered into the LITCIT simulation software. Further, we ran the program and saved the results. Finally, we compared our results with the results in references and evaluated the. Results : Output results of the LITCIT show that they are consistent with the results of references that were calculated with a different thermal modeling. Such a small average error shows the accuracy of the software for simulation and calculating the temperature. Conclusions : This simulating software has a good ability to be used as a treatment planning software for superficial lasers. Thus, it can be used for the optimization of treatment parameters and protocols.

  10. Assessment of groundwater vulnerability by combining drastic and susceptibility index: Application to Annaba superficial aquifer (Algeria)

    Science.gov (United States)

    Sedrati, Nassima; Djabri, Larbi; Chaffai, Hicham; Bougherira, Nabil

    2016-07-01

    Groundwater pollution due to anthropogenic activities is one of the major environmental problems in urban and industrial areas. The aim of this work is to propose a new integrated methodology to assess actual and forecasted groundwater vulnerability by combining Drastic and susceptibility index. The contamination susceptibility index (SI) at a given location was calculated by taking the product of the vulnerability DRASTIC index (VI) and the quality index (QI): SI=VI x QI. The superficial aquifer of Annaba plain was the study case proposed for the application of this methodology. The study revealed that the area with Very High vulnerability would increase 73 % in this superficial layer. This result can be explained by the susceptibility index map shows both hydrogeological and hydrochemical data related to the contamination problem including areas that should be taken into consideration during water management planning. The index map indicates that the most susceptible groundwater is occupies the majority of the study area. The validity of the DRASTIC and the susceptibility index methods, verified by comparing the distribution of some pollutants (Daouad, 2013) in the groundwater and the different vulnerability classes, shows a high contamination that affect the water quality in study areas.

  11. A Study of Superficial Mycoses with Clinical Mycological Profile in Tertiary Care Hospital in Ahmedabad, Gujarat

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    Bhavsar Hitendra K

    2012-04-01

    Full Text Available Aims & objectives: Superficial mycoses are commonly encountered fungal diseases prevalent in most parts of the world. It is a fungal disease infecting hair, skin & nails. In most of the cases, it does not produce any symptoms but in some cases it has cosmetic & systemic complications. The present study was carried out to know the prevalence of various superficial fungal pathogens in our institute. Materials & Methods: In our study, a total of 377 samples from skin department were processed & all were examined by conventional direct KOH preparation & fungal culture methods. Identification of the species was done by Lactophenol Cotton Blue mount from colony smear. Results: in present study, males are infected more than females with a ratio of 2.14:1. Tinea corporis was the commonest clinical type (52.78%. The positivity rate of KOH preparation is 68.16% & of culture is 20.15%. Trichophyton rubrum is the commonest fungal isolate (35.26% followed by Trichophyton mentagrophytes. The maximum number of the cases was seen in the monsoon months. Conclusion: Male have higher fungal infection rate than females. Trichophyton rubrum is the common isolate in our geographical area. KOH preparation has higher positivity rate than culture. [National J of Med Res 2012; 2(2.000: 160-164

  12. Hydric properties of some iberian ornamental granites with different superficial finishes: a petrophysical interpretation

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    Rojo, A.

    2003-03-01

    Full Text Available Some physical properties of three ornamental granites with different superficial finishes (polished, sawn and flamed were quantified by standard tests. These granites are commercially known as Rosa Porrino, Rosavel and Blanco Alcazar. The determined properties were: density, open porosity, water absorption, capillarity, evaporation, vapour absorption and water vapour permeability. The values of the hydric properties in the studied granites fundamentally depended on their textural characteristics, mainly grain size, micro cracking network and open porosity, and, to a lesser extent, on their superficial finish.

    El estudio analiza las diferencias en el comportamiento hídrico de tres granitos con diferentes acabados superficiales: pulido, corte de sierra y chorro de fuego. Estos granitos se comercializan con los nombres de Rosa Porrino, Rosavel y Blanco Alcázar. Las propiedades determinadas han sido: densidad, porosidad abierta, absorción libre de agua, absorción de vapor de agua, absorción de agua por capilaridad, evaporación y permeabilidad al vapor de agua. Los valores de las propiedades hídricas determinadas dependen fundamentalmente de las características texturales: tamaño de grano, microfisuras y porosidad abierta y, en menor medida, de los acabados superficiales.

  13. Acquisition and elaboration of superficial three-dimensional images in plastic and reconstructive surgery: Applications

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    Alfano C

    2005-01-01

    Full Text Available Since 1970, as computed axial tomography machines became easily available and became more sophisticated, image acquisition techniques and analysis improved, developed rapidly and became very useful in medical diagnosis. Today it is possible to examine either the anatomic and functional aspects of deep body organs and tissues including all the minute details as well as their morphological relations with superficial structures. Through precise graphic elaboration programs we can obtain information about spatial relations which was not possible using simply classical clinical examination. It is possible, for example, to "point out" an area of interest from its anatomic context, to carry out virtual cleavage of planes and to measure volumes and distances. New developments in image acquisition systems permit transfer of three-dimensional data directly from existing objects. The three -dimensional computerized axial tomography for deep structures, and the laser scanners for superficial structure, quickly furnish (1-3 seconds for the laser scanners useful information to plan the surgical operation. When analysing 3D-imaging techniques it is important to appreciate their utility for the planning and the follow up of surgery, particularly for the head and thorax, where the three dimensional evaluation is better than the classic double dimensional system that is incomplete and difficult to interpret. In the future, these systems will be important for the best aesthetic and functional results and above all for reducing the surgical time.

  14. Increased serum midkine concentration as a possible tumor marker in patients with superficial esophageal cancer.

    Science.gov (United States)

    Shimada, Hideaki; Nabeya, Yoshihiro; Okazumi, Shin-ichi; Matsubara, Hisahiro; Kadomatsu, Kenji; Muramatsu, Takashi; Ikematsu, Shinya; Sakuma, Sadatoshi; Ochiai, Takenori

    2003-01-01

    Midkine, a heparin-binding growth factor, is expressed in numerous cancer tissues and is reportedly elevated in patients with various neoplasms. The aim of this study was to evaluate the clinicopathological significance of serum midkine concentration (S-MK) in patients with superficial esophageal squamous cell carcinoma (SCC). Pretreatment S-MK was measured by enzyme-linked immunosorbent assay in 135 healthy controls, 16 patients with benign esophageal disease, and 60 patients with primary superficial esophageal squamous cell cancer (SESCC). All patients with SESCC underwent curative resection. The disease was staged according to TNM/UICC guidelines. Serum concentrations of carcinoembryonic antigen (CEA), squamous cell carcinoma antigen (SCC-Ag), and cytokeratin 19 fragment (CYFRA21-1) were also evaluated in the same populations. S-MK in patients with SESCC (388+/-411 pg/ml) was significantly higher than in benign esophageal disease or healthy controls (183+/-73 and 154+/-76 pg/ml, respectively). Using the mean + 2 standard deviations of healthy control S-MK (300 pg/ml) as the cut-off level, 50% of patients with esophageal SESCC were deemed positive. This S-MK positivity rate for detecting SESCC was significantly higher than for other tumor markers. Thus, S-MK may be useful as a tumor marker to detect SESCC.

  15. Superficially, longer, intermittent ozone theraphy in the treatment of the chronic, infected wounds.

    Science.gov (United States)

    Białoszewski, Dariusz; Kowalewski, Michał

    2003-10-30

    Background. Ozone therapy - i.e. the treatment of patients by a mixture of oxygen and ozone - has been used for many years as a method ancillary to basic treatment, especially in those cases in which traditional treatment methods do not give satisfactory results, e.g. skin loss in non-healing wounds, ulcers, pressure sores, fistulae, etc. Material and methods. In the Department of Phisiotherapy of the Medical Faculty and the Department of the Orthopedics and Traumatology of the Locomotor System at the Medical University of Warsaw in the period from January 2001 until November 2002, 23 patients with heavy,chronic, antibiotic resistants septic complications after trauma, surgical procedures and secundary skin infetions were treated with ozone. The ozone therapy was administered using an authorial technique of superficially, longer, intermittent ozone application. Results. In the wounds of the all experienced patients the inhibition of septic processes and wound healing was much faster than normal. Conclusions. Our data confirm the advantages wich result from the technique of superficially, longer, intermittent ozone theraphy in combined treatment for septic complications in the soft tissue, especially in the locomotor system. These technique makes posttraumatic infections and promotes quicker healing of post-surgical and post-traumal complications - chronic septic infections. This method also lowers the cost of antibiotic therapy and is sometimes the only available auxiliary technique to support surgical procedures.

  16. Imaging Features of Superficial and Deep Fibromatoses in the Adult Population

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    Eric A. Walker

    2012-01-01

    Full Text Available The fibromatoses are a group of benign fibroblastic proliferations that vary from benign to intermediate in biological behavior. This article will discuss imaging characteristics and patient demographics of the adult type superficial (fascial and deep (musculoaponeurotic fibromatoses. The imaging appearance of these lesions can be characteristic (particularly when using magnetic resonance imaging. Palmar fibromatosis demonstrates multiple nodular or band-like soft tissue masses arising from the proximal palmar aponeurosis and extending along the subcutaneous tissues of the finger in parallel to the flexor tendons. T1 and T2-weighted signal intensity can vary from low (higher collagen to intermediate (higher cellularity, similar to the other fibromatoses. Plantar fibromatosis manifests as superficial lesions along the deep plantar aponeurosis, which typically blend with the adjacent plantar musculature. Linear tails of extension (“fascial tail sign” along the aponeurosis are frequent. Extraabdominal and abdominal wall fibromatosis often appear as a heterogeneous lesion with low signal intensity bands on all pulse sequences and linear fascial extensions (“fascial tail” sign with MR imaging. Mesenteric fibromatosis usually demonstrates a soft tissue density on CT with radiating strands projecting into the adjacent mesenteric fat. When imaging is combined with patient demographics, a diagnosis can frequently be obtained.

  17. Imaging features of superficial and deep fibromatoses in the adult population.

    Science.gov (United States)

    Walker, Eric A; Petscavage, Jonelle M; Brian, Pamela L; Logie, Chika Iloanusi; Montini, Kenneth M; Murphey, Mark D

    2012-01-01

    The fibromatoses are a group of benign fibroblastic proliferations that vary from benign to intermediate in biological behavior. This article will discuss imaging characteristics and patient demographics of the adult type superficial (fascial) and deep (musculoaponeurotic) fibromatoses. The imaging appearance of these lesions can be characteristic (particularly when using magnetic resonance imaging). Palmar fibromatosis demonstrates multiple nodular or band-like soft tissue masses arising from the proximal palmar aponeurosis and extending along the subcutaneous tissues of the finger in parallel to the flexor tendons. T1 and T2-weighted signal intensity can vary from low (higher collagen) to intermediate (higher cellularity), similar to the other fibromatoses. Plantar fibromatosis manifests as superficial lesions along the deep plantar aponeurosis, which typically blend with the adjacent plantar musculature. Linear tails of extension ("fascial tail sign") along the aponeurosis are frequent. Extraabdominal and abdominal wall fibromatosis often appear as a heterogeneous lesion with low signal intensity bands on all pulse sequences and linear fascial extensions ("fascial tail" sign) with MR imaging. Mesenteric fibromatosis usually demonstrates a soft tissue density on CT with radiating strands projecting into the adjacent mesenteric fat. When imaging is combined with patient demographics, a diagnosis can frequently be obtained.

  18. Epidemiology of superficial fungal diseases in French Guiana: a three-year retrospective analysis.

    Science.gov (United States)

    Simonnet, Christine; Berger, Franck; Gantier, Jean-Charles

    2011-08-01

    A three-year retrospective analysis of fungi isolated from specimens of patients with superficial fungal infections in French Guiana is presented. Clinical samples from 726 patients with presumptive diagnoses of onychomycosis (28.2% of the patients), tinea capitis (27.8%), superficial cutaneous mycoses of the feet (22.0%), and of other areas of the body (21.9%), were assessed by microscopic examination and culture. Dermatophytes accounted for 59.2% of the isolates, followed by yeasts (27.5%) and non-dermatophytic molds (13.1%). Trichophyton rubrum was the most common dermatophyte recovered from cases of onychomycosis (67.4%), tinea pedis (70.6%) and tinea corporis (52.4%). In contrast, Trichophyton tonsurans was the predominant species associated with tinea capitis (73.9%). Yeasts were identified as the principal etiologic agents of onychomycosis of the fingernails (74.2%), whereas molds were found mainly in cases of onychomycosis of the toenails. In such instances, Neoscytalidium dimidiatum (70.8%) was the most common mold recovered in culture. In conclusion, the prevalence of T. rubrum and the occurrence of onychomycosis and fungal infections of the feet in French Guiana are similar to results reported from Europe, whereas the frequency of tinea capitis and the importance of T. tonsurans in such infections are similar to the situation in the Americas.

  19. Imaging Features of Superficial and Deep Fibromatoses in the Adult Population

    Science.gov (United States)

    Walker, Eric A.; Petscavage, Jonelle M.; Brian, Pamela L.; Logie, Chika Iloanusi; Montini, Kenneth M.; Murphey, Mark D.

    2012-01-01

    The fibromatoses are a group of benign fibroblastic proliferations that vary from benign to intermediate in biological behavior. This article will discuss imaging characteristics and patient demographics of the adult type superficial (fascial) and deep (musculoaponeurotic) fibromatoses. The imaging appearance of these lesions can be characteristic (particularly when using magnetic resonance imaging). Palmar fibromatosis demonstrates multiple nodular or band-like soft tissue masses arising from the proximal palmar aponeurosis and extending along the subcutaneous tissues of the finger in parallel to the flexor tendons. T1 and T2-weighted signal intensity can vary from low (higher collagen) to intermediate (higher cellularity), similar to the other fibromatoses. Plantar fibromatosis manifests as superficial lesions along the deep plantar aponeurosis, which typically blend with the adjacent plantar musculature. Linear tails of extension (“fascial tail sign”) along the aponeurosis are frequent. Extraabdominal and abdominal wall fibromatosis often appear as a heterogeneous lesion with low signal intensity bands on all pulse sequences and linear fascial extensions (“fascial tail” sign) with MR imaging. Mesenteric fibromatosis usually demonstrates a soft tissue density on CT with radiating strands projecting into the adjacent mesenteric fat. When imaging is combined with patient demographics, a diagnosis can frequently be obtained. PMID:22966216

  20. Endoscopic Submucosal Dissection of Gastric Superficial Lesions: Predictors for Time of Procedure in a Portuguese Center.

    Science.gov (United States)

    Ribeiro-Mourão, Francisco; Veloso, Nuno; Dinis-Ribeiro, Mário; Pimentel-Nunes, Pedro

    2015-01-01

    Endoscopic submucosal dissection (ESD), an endoscopic technique used for treatment of gastric superficial lesions, has been gaining importance on western countries. Procedural times have an impact on various outcomes. To define which factors from patients, lesions and procedure can predict longer procedural times. In a cohort of 127 lesions resected by ESD with IT-knife, after using needle-knife for submucosal layer access, by experienced gastroenterologists, characteristics from the patient (age, gender, presence of co-morbidities, usage and suspension of anti-platelet drugs and general physical condition), lesion (size, histopathological diagnosis at biopsy, location, macroscopic type and submucosal invasion) and procedure (adverse events) were retrospectively analyzed for its impact on time of procedure. Univariate and multivariate analysis were performed. Lesions larger than 20 mm (p 90 min. Lesion's size >20 mm and location in the upper third were independently associated with a procedure time longer than 90 min (OR 4.91 [95%CI 2.29-10.50] and OR 18.26 [95%CI 2.02-164.78], respectively). The time of procedure of ESD for gastric superficial lesions is influenced by size of lesion (>20 mm) and location (upper third of stomach), which predict a time longer than 90 min. This can be useful for better management of workflow, operation, training of teams and anesthesic procedures.

  1. Microsatellite-based genotyping of Candida albicans isolated from patients with superficial candidiasis.

    Science.gov (United States)

    Shimizu, Kazue; Hattori, Hisao; Adachi, Hidesada; Oshima, Ryosuke; Horii, Toshinobu; Tanaka, Reiko; Yaguchi, Takashi; Tomita, Yasushi; Akiyama, Masashi; Kawamoto, Fumihiko; Kanbe, Toshio

    2011-01-01

    This study aimed to examine the genotype distribution of Candida albicans and the major genotypes involved in superficial candidiasis. The genotypes of C. albicans isolated from the infection sites of patients with superficial candidiasis (referred to as infection isolates) were analyzed by fragment analysis using 4 microsatellite markers (HIS3, CDC3, CAI and CAIII). Genotypes of the infection isolates were compared with those of C. albicans isolated from oral mucosa of non-candidiasis patients (referred to as oral isolates). Isolates of C. albicans showed 4 major genotypes for HIS3/CAI (" a " for 148 : 148 / 23 : 23," b " for 148 : 160 / 33 : 41," c " for 148 : 164 / 32 : 41 and " d " for 152 : 152 / 18 : 27). The genotypes " a "," b " and " d " were commonly found in oral (4.7, 8.8 and 7.6%, respectively) and infection (6.6, 9.2 and 15.4%, respectively) isolates. No isolates of genotype " c " were isolated from infection sites. The genotype " a " was found in the isolates from patients with genitalia candidiasis. Genotyping of multiple isolates from an individual patient showed that C. albicans from infection sites was genetically homogenous as compared with that of oral isolates, even in the same patient with candidiasis.

  2. El tratamiento de las superficies pétreas en Venecia. Algunos casos de estudio

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    Alessandra Quendolo

    2003-12-01

    Full Text Available Este estudio comparado de las superficies pétreas de tres edificios venecianos, la Biblioteca de Sansovino, el Palacio Corner y el Arco Foscari, reúne interés y novedad ya que demuestra que las superficies ennegrecidas no sólo representan la presencia de fenómenos de degradación como costra negra y depósitos sino que, a menudo, corresponden a patinados intencionales aplicados para proteger la piedra o tratamientos de entonación del color realizados en posteriores intervenciones. El artículo supone una doble aportación a la cultura de la conservación: la existencia de una tradición de los tratamientos de protección y conservación de los paramentos de piedra y la necesidad actual de conservar la presencia de estos patinados intencionales.

  3. Comparison of a chlorhexidine and a benzoyl peroxide shampoo as sole treatment in canine superficial pyoderma.

    Science.gov (United States)

    Loeffler, A; Cobb, M A; Bond, R

    2011-09-01

    The clinical and antibacterial efficacy of two shampoos used as a sole antibacterial treatment in dogs with superficial pyoderma were investigated and compared. In a randomised, partially blinded study, a 3 per cent chlorhexidine gluconate shampoo (Chlorhex 3; Leo Animal Health) was compared against a 2.5 per cent benzoyl peroxide shampoo (Paxcutol; Virbac) in 22 dogs with superficial pyoderma. Dogs were washed two to three times weekly with a 10-minute contact time over 21 days. Clinical scores and bacterial counts were assessed on days 1, 8 and 22 and compared within and between treatment groups; overall response was assessed at the end of the study. Twenty dogs completed the study; 15 (68.2 per cent) showed an overall clinical improvement and the clinical signs resolved in three chlorhexidine-treated dogs. In the chlorhexidine-treated group, scores for papules/pustules (P<0.001), investigator-assessed pruritus (P=0.003), total bacterial counts (P=0.003) and counts for coagulase-positive staphylococci (P=0.003) were reduced after three weeks. Scores and bacterial counts did not vary significantly in the benzoyl peroxide-treated group.

  4. Spotlight on retapamulin in impetigo and other uncomplicated superficial skin infections.

    Science.gov (United States)

    Yang, Lily P H; Keam, Susan J

    2008-01-01

    Topical retapamulin (Altabax, Altargo) is the first pleuromutilin antibacterial approved for the treatment of uncomplicated superficial skin infections caused by Staphylococcus aureus (excluding methicillin-resistant S. aureus [MRSA]) and Streptococcus pyogenes in patients aged > or = 9 months. In the EU, retapamulin is indicated for use in patients with impetigo or with infected small lacerations, abrasions, or sutured wounds (without abscesses); in the US, it is indicated for use in patients with impetigo. Retapamulin has a novel site of action on bacterial ribosomes. In clinical trials in patients with impetigo, topical retapamulin 1% ointment twice daily for 5 days (the approved regimen) was superior to placebo; treatment with retapamulin was noninferior to that with topical fusidic acid. In patients with secondarily infected traumatic lesions, treatment with retapamulin was noninferior to that with oral cephalexin, although the efficacy of retapamulin was reduced in patients with MRSA infections or superficial abscesses. Retapamulin was well tolerated in both pediatric and adult patients, and the majority of adverse events were of mild to moderate severity. Thus, the introduction of topical retapamulin 1% ointment extends the treatment options available in the management of impetigo and uncomplicated secondarily infected traumatic lesions.

  5. Stability of bonds made to superficial vs. deep dentin, before and after thermocycling.

    Science.gov (United States)

    Zhang, Ling; Wang, Dan-yang; Fan, Jing; Li, Fang; Chen, Yu-jiang; Chen, Ji-hua

    2014-11-01

    Bonding stability of resinous adhesives to dentin is still problematic and may involve regional variations in dentin composition. This study is to evaluate the effect of dentin depth on the stability of resin-dentin bonds under thermocycling challenge. Dentin slabs with two flat surfaces parallel to the tooth axis were obtained from extracted human third molars. The slabs were randomized into eight groups according to the location of dentin [deep dentin (DD) or superficial dentin (SD)], the adhesive treatment (Single Bond 2 or Clearfil S(3) Bond), and the storage treatment (thermocycling for 5000 times vs. no). After the adhesive treatment and composite buildup on the dentin slabs, the micro-shear bond strength (μSBS) of each group was detected. The concentrations of cross-linked carboxyterminal telopeptide of type I collagen (ICTP) were also evaluated using an immunoassay to detect the degree of collagen degradation in each group. Dentin depth, adhesive treatment and storage treatment all showed significant effects on both the μSBSs and the ICTP values (P0.05). Deep dentin showed significantly more bond degradation after thermocycling than did superficial dentin. Copyright © 2014 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.

  6. Superficie Específica y Capacidad de Intercambio de Cationes en Varios Suelos Colombianos

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    Ospina L. Oscar

    1960-12-01

    Full Text Available El presente trabajo es una iniciación al estudio de la actividad superficial de algunos suelos de Colombia en relación con ciertas propiedades físicas y químicas de los mismos, mediante la utilización de dos técnicas recientes y de fácil aplicación. Asimismo, se sugiere el empleo de dichas técnicas como medio para empezar un estudio de caracterización de las arcillas. Se estudiaron 114 muestras de suelos correspondientes a 28 perfiles de distintas localidades de Atlántico, Bolívar, Antioquia, Chocó, Valle, Tolima, Nariño, Cundinamarca, Llanos Orientales y Amazonas. Las determinaciones realizadas fueron: retención de etileno glicol por el método de Dyal y Hendricks, como medida de la superficie específica total, y capacidad de intercambio de cationes por medio de titulaciones conductiométricas. Se establecieron correlaciones entre los valores encontrados por cada uno de estos métodos y el contenido total de arcilla y materia orgánica de los suelos.

  7. Study of the superficial ozone concentrations in the atmosphere of Comunidad de Madrid using passive samplers

    Directory of Open Access Journals (Sweden)

    D. Galán Madruga

    2001-06-01

    Full Text Available The ozone is a secondary atmospheric pollutant which is generated for photochemical reactions of volatil organic compounds (VOC’s and nitrogen oxides (NOx. In Spain the ozone is a big problem as a consequence of the solar radiation to reach high levels. Exposure over a period of time to elevated ozone concentrations can cause damage in the public health and alterations in the vegetation.The aim of this study is to carry out the development and validation of a measurement method to let asses the superficial ozone levels in the Comunidad de Madrid, by identifing the zones more significants, where to measure with UV photometric monitors (automatics methods this pollutant and where the health and the vegetation can be affected. To such effect, passive samplers are used, which have glass fiber filters coated with a solution of sodium nitrite, potassium carbonate, glycerol and water. The nitrite ion in the presence of ozone is oxidized to nitrato ion, which it is extrated with ultrapure water and analyzed for ion chromatography, by seen proportional to the concentration existing in the sampling point.The results of validation from field tests indicate a excellent correlation between the passive and the automatic method.The higher superficial ozone concentrations are placed in rural zones, distanced of emission focus of primary pollutants (nitrogen oxides and volatil organic compounds... principally in direction soutwest and northwest of the Comunidad of Madrid.

  8. Estudio del endurecimiento superficial por láser de fundiciones grises

    Directory of Open Access Journals (Sweden)

    Maco, A. L.

    1998-04-01

    Full Text Available Three different ferritic-pearlitic gray cast irons have been laser hardened. The influence of laser power density and scanning speed on their microstructural modification, affected depth and surface hardness have been evaluated. It was observed that when the laser energy density surpasses a certain critical value, a surface layer melts and a ledeburitic microstructure of very high hardness is obtained. Below it, a second layer of martensitic microstructure also of high hardness, is produced.

    Se ha realizado el endurecimiento superficial con láser de tres fundiciones grises de diferente composición química, cuantificándose las variaciones microestructurales introducidas, las profundidades afectadas por el tratamiento y la variación de dureza lograda al modificar tanto la densidad de potencia como la velocidad de pasada. Siempre que la densidad de energía aportada con el láser supere un cierto valor crítico, se obtiene una capa superficial que llega a fundir en el tratamiento, dando lugar a una estructura ledeburítica de muy alta dureza, obteniéndose, por debajo de ella, una segunda capa, también muy dura, de fundición martensítica.

  9. The Relationship of Superficial Cutaneous Nerves and Interperforator Connections in the Leg: A Cadaveric Anatomical Study.

    Science.gov (United States)

    Gascoigne, Adam C; Ian Taylor, G; Corlett, Russell J; Briggs, Chris; Ashton, Mark W

    2017-04-01

    The lower limb is a source of many flaps both for closure of local defects and for free transfer. Fasciocutaneous flap techniques have been progressively refined, although the vascular basis for their success needs clarification. Archival studies of 48 lower limbs were reviewed and combined with 20 studies of lower limbs from fresh cadavers, making a total of 68 investigations. Lower limbs were injected with a dilute lead oxide solution; the integument was removed and radiographed; and the cutaneous nerves were dissected, tagged with wire, radiographed again, and their paths traced on the original images. The major cutaneous nerves in the leg are paralleled by a longitudinal vascular axis often comprising long branches with large-caliber true anastomotic connections between perforators. The most highly developed vascular axes followed the medial sural cutaneous and saphenous nerves, together with their accompanying veins, immediately superficial to the deep fascia. The intervening areas were characterized by shorter branches usually connected by small-caliber choke anastomotic connections. These findings provide the anatomical basis for the observed reliability of longitudinal flaps in the leg. The superficial cutaneous nerves of the leg, especially the saphenous and medial sural cutaneous nerves, are paralleled by a vascular axis on or beside the nerve comprising long perforator branches connected usually but not always by large-caliber true anastomotic connections. This emphasizes the importance of understanding the characteristics of interperforator anastomoses when designing and raising flaps.

  10. Cold atmospheric plasma: a new tool for the treatment of superficial driveline infections.

    Science.gov (United States)

    Hilker, Lutz; von Woedtke, Thomas; Weltmann, Klaus Dieter; Wollert, Hans-Georg

    2017-01-01

    Percutaneous driveline infections (DI) are leading factors for morbidity and mortality in ventricular assist device (VAD) patients. In recent years, cold atmospheric plasma (CAP) has been safely and effectively used in clinical settings to treat topical infections. We describe the first use of CAP to treat a superficial DI. CAP was applied with the kinPen® MED plasma jet device (neoplas tools GmbH, Greifswald, Germany), in the treatment of a DI in a 66-year-old VAD patient in Klinikum Karlsburg, Germany. The patient received a daily application of CAP of 1 min for 12 days. One CAP application was administered each week for 4 weeks in our outpatient clinic after patient discharge. Laboratory tests were conducted and photographs of the driveline exit site were taken. After CAP treatment, the local infection was completely regressed without any signs of exudation or recurrence of the infection. There were no adverse side effects observed, and the HVAD logfile data did not show any abnormalities during treatment. Here, we demonstrate a successful resolution of a VAD DI with the kinPen plasma jet device. We believe that CAP has the potential to be a simple and effective tool in the treatment of superficial DIs.

  11. Evaluating the Efficacy of a Sternocleidomastoid Flap via Galvanic Skin Responses in Superficial Parotidectomy.

    Science.gov (United States)

    Basut, Oguz; Noyan, Behzat; Demirci, Ugur

    2014-01-01

    In the present study, we evaluated the efficacy of flaps via measurement of galvanic skin responses (GSR) in patients who had undergone superficial parotidectomy either with or without sternocleidomastoid (SCM) muscle flaps. Retrospective study design was used. The setting included University of Uludag School of Medicine Department of Otorhinolaryngology. Eleven patients who had undergone superficial parotidectomy for benign diseases in our clinic between June 2003 and August 2006 were included in the study. SCM muscle flaps were used in four patients. The GSR of the patients were measured using a MP 30 System. The Mann-Whitney U test was used for the analysis of data. There were complaints that resembled Frey's syndrome in three patients in whom flaps had not been performed. Patients with flaps had no complaints. In patients with flaps, no significant GSR changes were observed between the control and operated sides (P > 0.05). In patients without flaps, the GSR levels were significantly higher on the operated side compared to the control side (P SCM flap is an efficient method by which to prevent Frey's syndrome, and the GSR test is beneficial both in diagnosiing and determining the severity of the disease as well as evaluating the efficacy of surgical techniques used to prevent Frey's syndrome.

  12. Fotometría superficial de la galaxia irregular NGC 1427A

    Science.gov (United States)

    Cellone, S. A.; Forte, J. C.

    Se presenta fotometría superficial multicolor de la galaxia irregular NGC 1427A. Esta galaxia, un miembro del Cúmulo de Fornax que no ha sido estudiado previamente, muestra una morfología muy particular: una distribución estelar subyacente de bajo brillo superficial (LSB) con varias manchas brillantes dispuestas en una estructura anular deformada. Por sus colores muy azules se infiere que estas son zonas de formación estelar reciente. Al norte del cuerpo principal de la galaxia, y conectado con éste mediante filamentos LSB, hay un objeto de isofotas aproximadamente circulares. Este objeto tiene en sí mismo algunas zonas brillantes, pero su población estelar subyacente es significativamente más azul que la del cuerpo principal de la galaxia. Esto indica que ambos objetos han tenido distintas historias evolutivas. Estructuralmente, el objeto del norte es muy similar a algunas de las galaxias elípticas enanas más débiles que pueblan el Cúmulo de Fornax. Se discute la posible relación entre este objeto y la galaxia en si.

  13. Generación de superficies curvas utilizando el programa CADET

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    Recuero, Alfonso

    1987-02-01

    Full Text Available In this paper an extension to the CADET program, for the perspective drawing of 3— dimensional objects, is described. By means of this extension playing contours can be defined in their plane, which can subsequently be used in the generation of complex primitives. This contours may define the meridian curve of surfaces of revolution, the directive curve of conical or cilindrical surfaces, the borders of complicate plane elements, etc. The listings of the subroutines, written in HP-BASIC, are included together with a comprehensive explanation of how to use it in generating a complet object.

    En el presente trabajo se muestra una extensión del programa CADET, para el dibujo de perspectivas de objetos tridimensionales, mediante la cual es posible generar contornos planos descritos en su propio plano y que posteriormente sirven de base en la definición de primitivas complejas. Estos contornos pueden representar las meridianas de superficies de revolución, la directriz de superficies cilíndricas o cónicas, los bordes de elementos planos complicados, etc. Se incluyen los listados en HP-BASIC de las subrutinas de generación y dibujo de estos contornos, así como una descripción detallada de su utilización con un objeto completo.

  14. Confocal Microscopy–Guided Laser Ablation for Superficial and Early Nodular Basal Cell Carcinoma

    Science.gov (United States)

    Chen, Chih-Shan Jason; Sierra, Heidy; Cordova, Miguel; Rajadhyaksha, Milind

    2014-01-01

    Importance Laser ablation is a rapid and minimally invasive approach for the treatment of superficial skin cancers, but efficacy and reliability vary owing to lack of histologic margin control. High-resolution reflectance confocal microscopy (RCM) may offer a means for examining margins directly on the patient. Observations We report successful elimination of superficial and early nodular basal cell carcinoma (BCC) in 2 cases-, using RCM imaging to guide Er-:YAG laser ablation. Three-dimensional (3-D) mapping is feasible with RCM-, to delineate the lateral border and thickness of the tumor. Thus, the surgeon may deliver laser fluence and passes with localized control—ie, by varying the ablation parameters in sub-lesional areas with specificity that is governed by the 3-D topography of the BCC. We further demonstrate intra-operative detection of residual BCC after initial laser ablation and complete removal of remaining tumor by additional passes. Both RCM imaging and histologic sections confirm the final clearance of BCC. Conclusions and Relevance Confocal microscopy may enhance the efficacy and reliability of laser tumor ablation. This report represents a new translational application for RCM imaging, which, when combined with an ablative laser, may one day provide an efficient and cost-effective treatment for BCC. PMID:24827701

  15. Microstructural and superficial modification in a Cu-Al-Be shape memory alloy due to superficial severe plastic deformation under sliding wear conditions

    Science.gov (United States)

    Figueroa, C. G.; Garcia-Castillo, F. N.; Jacobo, V. H.; Cortés-Pérez, J.; Schouwenaars, R.

    2017-05-01

    Stress induced martensitic transformation in copper-based shape memory alloys has been studied mainly in monocrystals. This limits the use of such results for practical applications as most engineering applications use polycristals. In the present work, a coaxial tribometer developed by the authors was used to characterise the tribological behaviour of polycrystalline Cu-11.5%Al-0.5%Be shape memory alloy in contact with AISI 9840 steel under sliding wear conditions. The surface and microstructure characterization of the worn material was conducted by conventional scanning electron microscopy and atomic force microscopy, while the mechanical properties along the transversal section were measured by means of micro-hardness testing. The tribological behaviour of Cu-Al-Be showed to be optimal under sliding wear conditions since the surface only presented a slight damage consisting in some elongated flakes produced by strong plastic deformation. The combination of the plastically modified surface and the effects of mechanically induced martensitic transformation is well-suited for sliding wear conditions since the modified surface provides the necessary strength to avoid superficial damage while superelasticity associated to martensitic transformation is an additional mechanism which allows absorbing mechanical energy associated to wear phenomena as opposed to conventional ductile alloys where severe plastic deformation affects several tens of micrometres below the surface.

  16. Influencia del acabado superficial en la permeación de hidrógeno del acero API 5L-X52

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    Réquiz, R.

    2004-02-01

    Full Text Available The influence of surface roughness on the corrosion and hydrogen permeation behaviour was evaluated on a type API 5L-X52 steel in deaerated 0.1 M Na2SO4 at pH=2. Potentiodynamic polarization curves were employed to determine the electrochemical behaviour of the steel, while the Devanathan-Stachurski technique was used to estimate the hydrogen permeation rate. Additionally, the surface roughness profiles were obtained in order to correlate the changes in the hydrogen permeation rate with different metal surface finishings. The obtained results clearly demonstrate that when the roughness parameters have larger values, the cathodic current of hydrogen evolution increases while the hydrogen entry rate decreases. This effect can be attributed to the microstructural defects induced at the steel surface, such as dislocations, which increase the catalytic activity of the atomic hydrogen favouring its recombination. Also, these defects could allow the atomic hydrogen to remain adsorbed on the steel surface. Both effects could hinder the hydrogen diffusion into the metal since the possibility for this atom of becoming absorbed has been reduced

    En el presente trabajo de investigación se evalúa la influencia del acabado superficial, tanto en la corrosión generalizada como en la permeación de hidrógeno del acero API 5L-X52 en solución de Na2SO4 0,1M, a pH=2. El comportamiento electroquímico del acero se estudió mediante las curvas de polarización potenciodinámicas, mientras que la susceptibilidad al daño por hidrógeno se evaluó mediante la técnica de permeación de Devanathan- Stachurski. Además, se determinaron los parámetros de rugosidad a las muestras de acero con diferentes acabados superficiales, para luego correlacionarlos con los cambios en las corrientes de permeación de hidrógeno. Los resultados obtenidos demuestran, claramente, que, cuando la rugosidad superficial del acero

  17. Diagnostic utility of narrow-band imaging endoscopy for pharyngeal superficial carcinoma

    Institute of Scientific and Technical Information of China (English)

    Noboru Yoshimura; Kenichi Goda; Hisao Tajiri; Yukinaga Yoshida; Takakuni Kato; Yoichi Seino; Masahiro Ikegami; Mitsuyoshi Urashima

    2011-01-01

    AIM: To investigate the endoscopic features of pha-ryngeal superficial carcinoma and evaluate the utility of narrow-band imaging (NBI) for this disease.METHODS: In the present prospective study, 335 patients underwent conventional white light (CWL) en-doscopy and non-magnified/magnified NBI endoscopy, followed by an endoscopic biopsy, for 445 superficial lesions in the oropharynx and hypopharynx. The macroscopic appearance of superficial lesions was categorized as either elevated (< 5 mm in height), flat, or depressed (not ulcerous). Superficial carcinoma (SC) was defined as a superficial lesion showing high-grade dysplasia or squamous cell carcinoma on histology. The color, delineation, and macroscopic appearances of the lesions were evaluated by CWL endoscopy. The ratio of the brownish area/intervascular brownish epithelium (IBE), as well as microvascular proliferation, dilation, and irregularities, was determined by non-magnified/ magnified NBI endoscopy. An experienced pathologist who was unaware of the endoscopic findings made the histological diagnoses. By comparing endoscopic findings with histology, we determined the endoscopic features of SC and evaluated the diagnostic utility of NBI.RESULTS: The 445 lesions were divided histologically into two groups: a non-SC group, including non-neo-plasia and low-grade dysplasia cases, and an SC group. Of the 445 lesions examined, 333 were classified as non-SC and 112 were classified as SC. There were no significant differences in age, gender, or the location of the lesions between the patients in the two groups. The mean diameter of the SC lesions was significantly greater than that of non-SC lesions (11.0 7.6 mm vs 4.6 3.6 mm, respectively, P < 0.001). Comparisons of CWL endoscopy findings for SC and non-SC lesions by univariate analysis revealed that the incidence of redness (72% vs 41%, respectively, P< 0.001) and a flat or depressed type of lesion (58% vs 44%, respectively, P = 0.013) was significantly higher in

  18. Superficially projecting principal neurons in layer V of medial entorhinal cortex in the rat receive excitatory retrosplenial input.

    Science.gov (United States)

    Czajkowski, Rafał; Sugar, Jørgen; Zhang, Sheng-Jia; Couey, Jonathan J; Ye, Jing; Witter, Menno P

    2013-10-01

    Principal cells in layer V of the medial entorhinal cortex (MEC) have a nodal position in the cortical-hippocampal network. They are the main recipients of hippocampal output and receive inputs from several cortical areas, including a prominent one from the retrosplenial cortex (RSC), likely targeting basal dendrites of layer V neurons. The latter project to extrahippocampal structures but also relay information to the superficial layers of MEC, closing the hippocampal-entorhinal loop. In the rat, we electrophysiologically and morphologically characterized RSC input into MEC and conclude that RSC provides an excitatory input to layer V pyramidal cells. Ultrastructural analyses of anterogradely labeled RSC projections showed that RSC axons in layer V of MEC form predominantly asymmetrical, likely excitatory, synapses on dendritic spines (90%) or shafts (8%), with 2% symmetrical, likely inhibitory, synapses on shafts and spines. The overall excitatory nature of the RSC input was confirmed by an optogenetic approach. Patterned laser stimulation of channelrhodopsin-expressing presynaptic RSC axons evoked exclusively EPSPs in recorded postsynaptic layer V cells. All responding layer V pyramidal cells had an axon extending toward the white matter. Half of these neurons also sent an axon to superficial layers. Confocal imaging of RSC synapses onto MEC layer V neurons shown to project superficially by way of retrogradely labeling from superficial layers confirmed that proximal dendrites of superficially projecting cells are among the targets of inputs from RSC. The excitatory RSC input thus interacts with both entorhinal-cortical and entorhinal-hippocampal circuits.

  19. Superficial Velocity Effects on HZ-PAN and AgZ-PAN for Kr/Xe Capture

    Energy Technology Data Exchange (ETDEWEB)

    Welty, Amy Keil [Idaho National Lab. (INL), Idaho Falls, ID (United States); Garn, Troy Gerry [Idaho National Lab. (INL), Idaho Falls, ID (United States); Greenhalgh, Mitchell Randy [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2016-04-01

    Nearly all previous testing of HZ-PAN and AgZ-PAN was conducted at the same flow rate in order to maintain consistency among tests. This testing was sufficient for sorbent capacity determinations, but did not ensure that sorbents were capable of functioning under a range of flow regimes. Tests were conducted on both HZ-PAN and AgZ-PAN at superficial velocities between 20 and 700 cm/min. For HZ-PAN, Kr capacity increased from 60 mmol/kg to 110 mmol/kg as superficial velocity increased from 21 to 679 cm/min. Results for AgZ-PAN were similar, with capacity ranging from 72 to 124 mmol/kg over the same range of superficial. These results are promising for scaling up to process flows, demonstrating flexibility to operate in a broad range of superficial velocities while maintaining sorbent capacity. While preparing for superficial velocity testing it was also discovered that AgZ-PAN Xe capacity, previously observed to diminish over time, could be recovered with increased desorption temperature. Further, a substantial Xe capacity increase was observed. Previous room temperature capacities in the range of 22-25 mmol Xe/kg AgZ-PAN were increased to over 60 mmol Xe/kg AgZ-PAN. While this finding has not yet been fully explored to optimize activation and desorption temperatures, it is encouraging.

  20. Efficacy and safety of superficial cryotherapy for alopecia areata: A retrospective, comprehensive review of 353 cases over 22 years.

    Science.gov (United States)

    Jun, Myungsoo; Lee, Noo Ri; Lee, Won-Soo

    2016-10-06

    Alopecia areata (AA) affects anagen hair follicles, resulting in non-scarring hair loss. Since introduced by Huang et al., superficial cryotherapy has been accepted as a considerable primary therapeutic modality for AA. The aim of this study was to objectively clarify the therapeutic efficacy and safety of superficial hypothermic cryotherapy for treatment of AA. Medical records of 353 patients from 1993 to 2014 were retrospectively analyzed. According to the response to the superficial cryotherapy, patients were categorized into four groups: "marked", "partial", "poor" and "no recovery". The marked and partial recovery groups were considered as responders. The proportions of the responders among patient subgroups which were defined by various patients, disease, and treatment factors were compared. Of the patients, 60.9% were classified as responders after 3 months of superficial hypothermic cryotherapy. The proportion of the responders were higher when the treatment interval was 2 weeks or less and in the incipient disease stage, with statistical significance. No severe side-effects other than mild pain and pruritus were reported. In conclusion, superficial cryotherapy is an effective and safe therapeutic modality for AA. Especially when the treatment interval is 2 weeks or less and in the first occurrence of the disease, the therapeutic outcome is superior.