A arte de contar histórias, integrada a outras linguagens de arte: uma prática pedagógica na educação básica The art of storytelling integrated to other languages of art: an educational practice in primary education

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Marina Tarnowski Fasanello

2012-12-01

Full Text Available Este artigo tem por objetivo discutir a relevância da arte de contar histórias, integrada a outras linguagens de arte e expressão enquanto prática pedagógica desencadeadora de processos criativos e de autoconhecimento no âmbito da educação básica. O artigo está organizado em duas partes: a primeira aborda as bases conceituais da arte-educação e da arte de contar histórias; e a segunda relata experiências profissionais de um dos autores, desenvolvidas entre 1998 e 2006, no âmbito da chamada "Oficina Escola de Arte Granada", envolvendo atividades complementares à escola com alunos e professores de escolas públicas no município de Nova Friburgo, Rio de Janeiro. Tais experiências reforçam a importância de buscar alternativas pedagógicas para o desenvolvimento de escolas criativas e transformadoras da realidade, que estimulem alunos mais autônomos e futuros cidadãos.This article discusses the relevance of the art of storytelling integrated to other art languages and expressions As a teaching practice which can promote creative and self-knowledge processes in the context of basic education. The article is organized in two parts: firstly we approach the conceptual bases of art-education and the art of storytelling; secondly we explain some professional experiences developed by one of the authors between 1998 and 2006 related to the "Granada School of Art", an educational organization dedicated to art education and storytelling, involving complementary activities to formal education with students and teachers from public schools in the municipality of Nova Friburgo, Rio de Janeiro State. Such experiences reinforce the importance of looking for pedagogic alternatives to the development of creative and engaged schools that generate autonomy and citizenship among students.

Origem, ramificação e distribuição da artéria celíaca no tucano-de-bico-verde (Ramphastos dicolorus Linnaeus, 1766

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Osório J. Silva Neto

2013-03-01

Full Text Available O tucano-de-bico-verde (Ramphastos dicolorus é uma ave encontrada nas florestas tropicais americanas e pertence à Ordem Piciforme, Família Ramphastidae. Neste trabalho objetivou-se descrever a origem, a ramificação e a distribuição da artéria celíaca do tucano-de-bico-verde. Foram utilizados três espécimes provenientes do Criatório Científico e Cultural de Poços de Caldas, MG (IBAMA, 2.31.94-00006, doados após óbito por causas naturais. As aves tiveram a artéria isquiática direita canulada para injeção de solução de látex corado, e após fixação em solução de formol a 10% foram dissecadas. A artéria celíaca originou-se a partir da porção descendente da aorta, emitindo como primeiro ramo colateral a artéria pró-ventricular dorsal. Esta emitiu ramos esofágicos e continuou-se como artéria gástrica dorsal, de aspecto tortuoso, terminando em anastomose com a artéria gástrica direita. Após curto trajeto, a artéria celíaca formou dois ramos colaterais, o esquerdo e o direito. O ramo esquerdo logo se ramificou formando a artéria pró-ventricular ventral com seus ramos esofágicos, artéria gástrica esquerda, que originou a artéria hepática esquerda, e finalmente a artéria gastroduodenal, que emitiu as artérias gástricas ventrais e duodenais. O ramo direito da artéria celíaca emitiu as artérias lienais e hepática direita, continuando-se como artéria pancreático-duodenal. Esta formou a artéria pilórica dorsal, duas artérias gástricas direitas, vários ramos duodenais, pancreáticos e a artéria duodeno-jejunal. Assim, a artéria celíaca nos três espécimes de tucano-de-bico-verde, exibiu um arranjo que se assemelha tanto ao descrito em aves domésticas quanto ao de aves silvestres.

Memòria Històrica i Art Públic

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Noélia Paz Fernández

2016-09-01

Adoptem la ciutat de Barcelona com una il·lustració local de la problemàtica teòrica global, considerant la seva evolució urbana en els àmbits pròxims a la memòria i el treball realitzat per a l’articulació de l’art públic i el disseny urbà.

História e iconologia: conteúdo nas artes visuais / Historiography and iconology: content in the visual arts

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Judá Leão Lobo

2012-12-01

Full Text Available 1024x768 Normal 0 false false false EN-US X-NONE X-NONE RESUMO Este artigo traz uma discussão acerca da importância da análise iconológica para a historiografia (política, social, jurídica. Vistas nesta perspectiva, as artes visuais contêm conexão profunda com o passado em que foram elaboradas, trazendo ao presente princípios, convenções e sentidos que a motivaram. Para ilustrar nosso argumento, tomaremos um exemplo concreto. A primeira República brasileira tinha de obter legitimidade e, particularmente, o Estado do Paraná. Era um Estado recente, desprovido de símbolos e tinha de criá-los. A análise iconológica desvela o imaginário que se construía naquele momento. PALAVRAS-CHAVE: História Política, Jurídica e Cultural; Artes; Metodologia.   ABSTRACT This article brings a discussion on the importance of the iconological analysis to the (political, social, juridical historiography. Viewed from this perspective, the visual arts contain a deep connection with the past in which they were developed, bringing to the present principles, conventions and meanings that motivated them. To illustrate our argument, we shall give a concrete example. The first Brazilian Republic had to obtain legitimacy and particularly the State of Paraná. It was recent, devoid of symbols and had to create them. The iconological analysis discloses the imaginary that one builds in that moment. KEY WORDS: Political, Juridical and Cultural History; Arts; Methodology.  

Artérias e veias placentárias em ovinos deslanados sem raça definida (Ovis aries, L. 1758

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Janicleide Maria de Almeida

2000-01-01

Full Text Available O suprimento sangüíneo da placenta de 30 ovelhas deslanadas sem raça definida foi estudado mediante análise de peças obtidas através de injeção vascular com Látex Neoprene 650 corado. Constataram-se no material casos de gestações únicas (53,3%, gemelares (46,7% e trigemelares (3,3%. Em todos os casos analisados, observaram-se 4 vasos umbilicais (2 artérias e 2 veias além do ducto alantóide, na constituição do funículo umbilical. Em apenas 1 caso (gestação trigemelar, as duas artérias umbilicais de um dos fetos fundiram-se na porção média do funículo umbilical, e neste caso integrava apenas uma veia umbilical. A área placentária hilar variava de 2,0 a 6,0 centímetros dependendo da fase de gestação. O número médio de placentônios por gestação foi igual a 96, com tamanhos e formas bastante diversificados, sendo que aqueles maiores que 1,5 centímetro eram predominantes, assim como aqueles de formato ovóide. Os placentônios eram irrigados e drenados por uma série diversificada de artérias e veias, constituindo arranjos arteriocotiledonários e venocotiledonários, perfazendo um total de 299 e 314 arranjos respectivamente.

A review of experiments and computer analyses on RIAs

International Nuclear Information System (INIS)

Jernkvist, L.O.; Massih, A.R.; In de Betou, J.

2010-01-01

Reactivity initiated accidents (RIAs) are nuclear reactor accidents that involve an unwanted increase in fission rate and reactor power. Reactivity initiated accidents in power reactors may occur as a result of reactor control system failures, control element ejections or events caused by rapid changes in temperature or pressure of the coolant/moderator. our current understanding of reactivity initiated accidents and their consequences is based largely on three sources of information: 1) best-estimate computer analyses of the reactor response to postulated accident scenarios, 2) pulse-irradiation tests on instrumented fuel rodlets, carried out in research reactors, 3) out-of-pile separate effect tests, targeted to explore key phenomena under RIA conditions. In recent years, we have reviewed, compiled and analysed these 3 categories of data. The results is a state-of-the-art report on fuel behaviour under RIA conditions, which is currently being published by the OECD Nuclear Energy Agency. The purpose of this paper is to give a brief summary of this report

Dopplervelocimetria da artéria cerebral média fetal e outros parâmetros de vitalidade fetal na sobrevida neonatal em gestações com insuficiência placentária

OpenAIRE

Nomura, Roseli Mieko Yamamoto; Niigaki, Juliana Ikeda; Horigome, Flávia Thiemi; Francisco, Rossana Pulcineli Vieira; Zugaib, Marcelo

2013-01-01

OBJETIVO: Estudar a dopplervelocimetria da artéria cerebral média fetal em gestações complicadas pela insuficiência placentária e verificar o seu papel no prognóstico de sobrevida neonatal. MÉTODOS: Trata-se de estudo prospectivo de 93 gestantes com diagnóstico de insuficiência placentária estabelecida antes da 34ª semana. A insuficiência placentária foi caracterizada pelo Doppler de artéria umbilical (AU) alterado (> p95). Foram analisados os seguintes parâmetros: índice de pulsatilidade (IP...

Dopplervelocimetria da artéria cerebral média fetal e outros parâmetros de vitalidade fetal na sobrevida neonatal em gestações com insuficiência placentária

OpenAIRE

Nomura,Roseli Mieko Yamamoto; Niigaki,Juliana Ikeda; Horigome,Flávia Thiemi; Francisco,Rossana Pulcineli Vieira; Zugaib,Marcelo

2013-01-01

OBJETIVO: Estudar a dopplervelocimetria da artéria cerebral média fetal em gestações complicadas pela insuficiência placentária e verificar o seu papel no prognóstico de sobrevida neonatal. MÉTODOS: Trata-se de estudo prospectivo de 93 gestantes com diagnóstico de insuficiência placentária estabelecida antes da 34ª semana. A insuficiência placentária foi caracterizada pelo Doppler de artéria umbilical (AU) alterado (> p95). Foram analisados os seguintes parâmetros: índice de pulsatilidade ...

Lautrec e Warhol: premissas de uma análise descodificada na arte visual na arte publicitária

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Douglas Junio Fernandes Assumpção

2013-06-01

Full Text Available Lautrec e Andy Warhol, artistas de diferentes períodos, têm em comum areincidência da arte e publicidade como elementos centrais de persuasão.Neste artigo, apoiando-se, Inicialmente, em relatos biográficos relativosaos dois artistas, enfatiza-se a presença da publicidade na arte, elencandoconceitos de comunicação visual e propõem-se conceitos relativos à arte, àpublicidade e ao design. Assim, mediante a comparação com a publicidadeatual, procurou-se traçar um parâmetro semiótico, artístico e cultural queculminou em nova forma de arte publicitária.

Art Públic i Memòria Ferroviària Regional (Sud-oest de Buenos Aires, República Argentina, 2003/2016

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Diana I Ribas

2017-07-01

Full Text Available En els noranta, la degradació final del sistema ferroviari estatal impulsada pel president Carlos Menem en el marc d’una sèrie de normes neoliberals va implicar, paradoxalment, que es convertís en una atracció per a l’art públic regional. En aquest llavors, el Museu Municipal d’Art de Badia Blanca va impulsar un Simposi Nacional d’Escultura Monumental convidant a deu artistes a utilitzar la ferralla de ferro. Segons el paradigma modern d’art autònom, se’ls va trobar posteriorment un emplaçament en un parc lineal que va començar a ser anomenat Passeig de les Escultures. En aquest article s’aborda la segona etapa en tant vehicle de memòria. Al segle XXI, la utilització dels edificis abandonats amb fins culturals va ser paral·lela a un començament de reactivació ferroviària portada endavant pel kirchnerisme, no obstant els seus efectes no van ser sentits en aquesta regió. La creació del museu-taller Ferrowhite (2003, la presentació del projecte Intempèrie a la Biennal Regional d’Art el 2014 i les accions de l’Associació Amics de l’Estació Nicolás Levalle en aquest mateix any, han promogut una memòria que es debat entre la poesia de les ruïnes i la recuperació patrimonial. Aquestes propostes ubicades a llocs específics s’han recuperat els seus contextos històrics i teixit en ells entramats socials mitjançant pràctiques participatives i col·laboratives, creant les condicions de possibilitat perquè es generin picades d’ullet còmplices entre els integrants i es transformin en “llocs encantats” (de Certeau. Al seu torn, tenint en compte que es plantegen a si mateixes com a centres i les seves pràctiques emergents han estat produïdes des d’una ambigua frontera artístic-històric-polític-social, aquestes iniciatives de base comunitària poden ser caracteritzades com cartografies frontereres.

História, arte e política: o muralismo do boliviano Miguel Alandia Pantoja History, art and politics: the muralism of the Bolivian Miguel Alandia Pantoja

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Everaldo de Oliveira Andrade

2006-01-01

Full Text Available Este artigo pretende avaliar em que medida arte e política se expressaram na criação e na ação do artista e militante político boliviano Miguel Alandia Pantoja, ativo participante de momentos centrais da História do seu país como a guerra do Chaco, a revolução de 1952 e a Comuna de La Paz de 1971. As influências do indigenismo andino e do muralismo mexicano parecem ter-se cruzado com as opções políticas de Alandia e com seu engajamento na proposta dos artistas ligados ao Manifesto por Uma Arte Revolucionária e Independente lançado por André Breton, Diego Rivera e Leon Trotski em 1936, permitindo o surgimento de uma obra original, polêmica e marcante para a História latino-americana.This article intends to evaluate how art and politics are expressed both in the creation and in the action of the Bolivian militant politician Miguel Alandia Pantoja, who was an active participant in decisive moments of his country's history, as the Chaco War, the 1952 Revolution and the Commune of La Paz in 1971. The Andean indigenismo and the Mexican muralist influences seemed to have crossed with Alandia political options and with his enrollment at the proposal made by artists related to the Manifesto for a Revolutionary and Independent Art launched by Andre Breton, Diego Rivera and Leon Trotski in 1936, allowing the uprising of an original and controversial artistic creation for Latin American history.

Aneurisma da Artéria Renal: caso clínico Renal Artery Aneurysm

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Joana Moreira

2011-12-01

Full Text Available Apresenta-se o caso clínico de um doente com volumoso aneurisma da artéria renal esquerda. Do sexo masculino, de 22 anos de idade, com lombalgia à esquerda com algumas semanas de evolução. Recorreu ao médico assistente que solicitou estudo imagiológico por ecografia abdominal. Detectada imagem sugestiva de aneurisma da aorta abdominal. Este achado motivou a transferência para o nosso Hospital onde foi admitido consciente e orientado, hemodinamicamente estável, apresentando uma massa pulsátil epigástrica, com frémito e sopro sistólico à auscultação. Angio-TC revelou um aneurisma da artéria renal esquerda com 16 cm de diâmetro. Dada a estabilidade clínica e topografia lesional optou-se por tentar embolizar, sem sucesso, o tronco da artéria renal esquerda antes da abordagem cirúrgica. O doente foi então submetido a Nefrectomia total esquerda por via toraco-abdominal. Pós-operatório sem complicações, locais ou sistémicas. Alta ao 8ºdia, mantendo boa função renal e com níveis normais de hemoglobina. Diagnóstico de aneurisma da artéria renal confirmado por estudo anátomo-patológico da peça operatória.One case of a large left renal artery aneurysm in a young patient 22 years old is presented. He appealed to his assistant physician a few weeks after development of left back pain. Abdominal ultrasound imaging study has been requested. Suggestive abdominal aortic aneurysm was detected. This finding led to the transfer to our hospital where he was admitted conscious and hemodynamically stable. A pulsatile epigastric mass with a systolic murmur on auscultation and thrill were detected. Angio-CT scan revealed a left renal artery aneurysm, 16 cm in diameter. Given the clinical stability and lesional topography we decide a previous embolization of left renal artery, unsuccessfully. The patient underwent then left total nephrectomy, through thoraco-abdominal incision. No local or systemic complications in the postoperative

Dissecção da artéria basilar: relato de caso

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TOGNOLA WALDIR ANTONIO

2000-01-01

Full Text Available Relato de um caso de dissecção da artéria basilar, documentado com neuroimagem (tomografia computadorizada do crânio, ressonância magnética e angiografia digital com subtração de imagem.

State of the States, 2012: Arts Education State Policy Summary

Science.gov (United States)

Arts Education Partnership (NJ1), 2012

2012-01-01

The "State of the States 2012" summarizes state policies for arts education identified in statute or code for all 50 states and the District of Columbia. Information is based primarily on results from the AEP Arts Education State Policy Survey conducted in 2010-11, and updated in April 2012.

Anestesia para correção cirúrgica de fístula de artéria coronária sem circulação extracorpórea: relato de caso

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Raquel Reis Soares

2011-12-01

Full Text Available JUSTIFICATIVA E OBJETIVOS: Descrita em 1865 por Krause ¹, a fístula de artéria coronária comunicando-se com cavidades cardíacas, artéria pulmonar ou seio coronário é muito rara. Representa 0,2% a 0,4 % das cardiopatias congênitas e 0,1% a 0,2% da população adulta submetida a angiografias coronarianas ². O objetivo deste relato é apresentar anestesia para cirurgia de fechamento de fístula coronária em procedimento eletivo, considerando suas particularidades. RELATO DE CASO: Paciente do sexo masculino com 59 anos, cuja fístula coronária foi diagnosticada durante investigação clínica de dor torácica progressiva e dispneia de longa data. O paciente foi submetido a uma correção cirúrgica de fístula de artéria coronária sob anestesia geral sem a utilização de circulação extracorpórea (CEC.O paciente evoluiu sem intercorrências, tendo alta hospitalar com melhora clínica em sete dias de pós-operatório. CONCLUSÕES: A fístula coronária é afecção rara, mas o anestesiologista pode deparar com esse tipo de paciente em situações distintas. É importante compreender sua fisiopatologia para abordar adequadamente o paciente no perioperatório, favorecendo seu melhor prognóstico.

Circulação coronária dependente do ventrículo direito na atresia pulmonar com septo interventricular íntegro. Ausência da origem das artérias coronárias da aorta Right ventricle-dependent coronary circulation in pulmonary atresia with intact ventricular septum. Absence of origin of the coronary arteries from the aorta

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Ivan Romero Rivera

1998-08-01

Full Text Available São descritos os aspectos clínicos, ecocardiográficos e angiográficos de um neonato de sexo masculino, com cinco dias de vida e diagnóstico de atresia pulmonar com septo interventricular íntegro. Tanto o ecocardiograma como a aortografia mostraram ausência da origem das artérias coronárias da aorta. O ecocardiograma bidimensional e, posteriormente, a ventriculografia direita identificaram as artérias coronárias, originando-se no ventrículo direito. Não houve contrastação retrógrada da aorta ou do tronco pulmonar quando contrastadas as artérias coronárias. Este é o primeiro caso relatado com diagnóstico ecocardiográfico pré angiografia, e é um exemplo da necessidade de se avaliar as artérias coronárias em pacientes com atresia pulmonar e septo ventricular íntegro.This report describes the clinical, echocardiographic and angiographic aspects of a five-day old boy with pulmonary atresia and intact ventricular septum. Both the echocardiogram and the aortography did not show any coronary arteries arising from the aorta. Two-dimensional echocardiography was able to identify the coronary arteries originating from the right ventricle and so did the right ventricular angiogram. No retrograde flow into the aorta or pulmonary trunk was identified after opacification of the coronary arteries. As far as we know this is the first case diagnosed by echocardiography, and is a vivid example of the necessity of identifying the coronary arteries in patients with pulmonary atresia and intact ventricular septum.

Enxerto venoso intercoronariano na revascularização de artéria coronária comprometida por dissecção de aorta tipo I Intercoronary venous graft in revascularization of the coronary artery involved by aortic dissection type I

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Carlos Alberto C Abreu Filho

1995-03-01

Full Text Available Paciente de 39 anos, portador de hipertensão arterial não controlada, submetido a cirurgia para tratamento de dissecção aguda de aorta tipo I. Devido ao grande envolvimento do óstio coronário direito pela dissecção aórtica, optou-se pela ressecção da porção comprometida do vaso, com interposição de tubo não valvulado de Dacron na aorta ascendente, suspensão da valva aórtica e ligadura do óstio da artéria coronária direita. Como não havia presença de aterosclerose no ramo interventricular anterior e na artéria coronária direita, decidimos realizar um enxerto venoso entre as artérias. O enxerto intercoronário apresentou bom funcionamento e todo o território dependente da coronária direita manteve boa contratilidade. O paciente recebeu alta hospitalar em boas condições clínicas, com função rniocárdica preservada.A thirty nine-year-old patient presenting arterial hypertension was operated upon for type I acute aortic dissection. Due to important alterations in the ascendent aorta with involvement of the right coronary ostium, the surgical procedure included resection of the segment of aorta containing the intimal tear and replacement with a Dacron prosthesis, suspension of the aortic valve and ligadure of the right coronary ostium. Technical difficulties brought the necessity of a different approach for the myocardium revascularization. Instead of the traditional described procedures, an intercoronary venous graft was put between the anterior interventricular artery (branch of the left coronary artery and the right coronary artery. The intercoronary graft presented a good flow since the begining, keeping a good myocardial contratility. Patient left the hospital in a good clinical condition, with preserved myocardial function. Intercoronary graft should be an efficient alternative for revascularization of a corohary artery involved by aortic dissections.

Opção técnica na tetralogia de Fallot com artéria coronária anômala: relato de casos Technical option on tetralogy of Fallot with abnormal coronary artery: cases report

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Claudio Roberto Assumpção

2008-06-01

Full Text Available Relatamos dois casos um menino de 11 anos e uma menina de um ano e seis meses, portadores de tetralogia de Fallot com artéria coronária de origem anômala, cruzando a via de saída de ventrículo direito. O diagnóstico foi feito com ecocardiografia e cateterismo cardíaco. Utilizamos, na correção, um enxerto externo composto de pericárdio bovino e parede posterior da artéria pulmonar, entre o ventrículo direito e o tronco da artéria pulmonar. As crianças tiveram boa evolução pós-operatória, obtendo alta hospitalarassintomáticas. É mais uma opção técnica na correção da tetralogia de Fallot com artéria coronária anômala.Report on two children, one 11 year-male and another one year-six-month-female with tetralogy of Fallot associated with anomalous origin of coronary artery crossing the right ventricle outlet tract. Diagnosis was done by echocardiography and cardiac catheterization. On surgical correction we used an external composite tubular pericardium bovine graft and posterior wall of the pulmonary artery between the right ventricle and the pulmonary artery trunk. Patients had an uneventful post-operative period and were discharged asymptomatic. It is more an option on correction of tetralogy of Fallot with anomalous coronary artery.

Trombose de artéria carótida interna relacionada a trauma de palato em criança

OpenAIRE

Almeida,Fernando de Souza; Hossotani,Márcia Harumi; Moura,Juliana Del Grossi

2012-01-01

OBJETIVO: Relatar um caso de trombose de artéria carótida interna secundária relacionada a trauma de palato mole em criança. DESCRIÇÃO DO CASO: Criança admitida com quadro de alteração do nível de consciência, sonolência, afasia e hemiplegia direita; tinha antecedente de trauma corto contuso leve em palato mole há oito horas. A investigação tomográfica evidenciou acidente vascular isquêmico secundário à interrupção do fluxo sanguíneo em território de artéria cerebral média esquerda. A arterio...

Tratamento microcirúrgico de aneurismas da artéria comunicante anterior

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Luiz Carlos Mendes Faleiro

1973-12-01

Full Text Available Os autores descrevem o tratamento microcirúrgico realizado em oito pacientes que tiveram hemorragia subaracnóidea espontânea por rotura de aneurisma da artéria comunicante anterior. A conduta clínica pré-operatória é apresentada sendo dada ênfase às condições do paciente antes do ato cirúrgico. A técnica cirúrgica é descrita em detalhe, sendo salientado o uso do microscópio binocular. Dos 8 pacientes, dois (25% tinham mais de um aneurisma que foram tratados durante a mesma operação. A única complicação cirúrgica foi meningite pós-operatória em um paciente; esta complicação cedeu completamente ao tratamento. Após a operação 88% dos pacientes retornaram ao seu trabalho, não tendo havido óbito em virtude do tratamento.

Origens e distribuições das artérias mesentéricas cranial e caudal em fetos de javalis (Sus scrofa scrofa, Linnaeus – 1758

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Andrea Regina Abrantes Gomes

2013-01-01

Full Text Available http://dx.doi.org/10.5007/2175-7925.2013v26n1p159 Estudou-se o comportamento anatômico das artérias mesentéricas cranial e caudal em 21 fetos de javalis, fêmeas e machos, nos quais foi injetada, através da aorta torácica, solução de Neoprene Látex “450”, corada com pigmento específico e, em seguida, eles foram fixados em solução de formol a 10%. A análise dos resultados permitiu afirmar que a artéria mesentérica cranial originou-se da aorta abdominal, caudalmente à artéria celíaca, emitiu ramos adrenais direito e esquerdo, pancreáticos, e as artérias pancreático-duodenal caudal, jejunais, cólicas média e direita, e ileocecocólica. A artéria mesentérica caudal surgiu da aorta abdominal, de seu terço caudal, e emitiu as artérias cólica esquerda e retal cranial. Foram verificadas anastomoses entre artérias jejunais, cólica esquerda e retal cranial, e cólicas esquerda e média. Nas três espécies, as artérias mesentéricas cranial e caudal, pancreático-duodenal caudal, jejunais, cólicas direita e média, e ileocecocólica apresentaram padrões vasculares semelhantes, visto que as diferenças quanto a emissão de ramos ou surgimento isolado ou em tronco comum não alteraram o suprimento sanguíneo.

Preliminary insights of the impact of steady state uncertainties on fuel rod response to an RIA

International Nuclear Information System (INIS)

Herranz, Luis E.; Huguet, Anne

2013-01-01

Nuclear fuel cycles are driven to higher burn-ups under the nowadays more demanding operational conditions. The operational safety limits that ensure the long-term core coolability are set through the analysis of the design basis accidents, RIA scenarios. These analyses are mainly performed through computer codes that encapsulate the present understanding of fuel behavior under such events. They assess safety margins and therefore their accuracy is of utmost interest. Their predictability is extended and validated through separate effect and integral experiments data. Given the complexity of working phenomena under RIA conditions, neither existing thermo-mechanical models nor rod state characterization at the moment of power pulse reflect exactly reality. So, it is essential to know how these deviations influence code predictions. This study illustrates how uncertainties related to pre-transient rod characterization affect the estimates of nuclear fuel behavior during the transient. In order to do so, the RIA scenario of the CIP0-1 test (CABRI program) has been analyzed with FRAPCON-3 (steady state irradiation) and FRAPTRAN 1.4 (transient) codes. The input uncertainties have been propagated through the codes by following a deterministic approach. This work is framed within the CSN-CIEMAT agreement on 'Thermo-Mechanical Behavior of the Nuclear Fuel at High Burnup'. (authors)

Reatividade vascular da artéria mamária interna: estudos farmacológicos comparativos entre artérias caninas direita e esquerda

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EVORA Paulo Roberto B.

1999-01-01

Full Text Available Para estudos comparativos da reatividade vascular entre artéria mamária interna (AMI canina direita e esquerda, realizaram-se experimentos "in vitro" utilizando-se banhos orgânicos ("organ chambers" e ensaios biológicos: 1 os produtos plaquetários ADP e 5-HT induziram, respectivamente, vasodilatação dependente e independente do endotélio; 2 os autacóides, bradicinina e histamina, também induziram vasodilatação, respectivamente, dependente e independente do endotélio; 3 o A23187, vasodilatador independente de receptor, induziu relaxamentos dependentes do endotélio; 4 dopamina, dobutamina, papaverina e a poli-L-arginina induziram vasodilatações independentes do endotélio; 5 a NOR induziu intensa vasoconstrição comparável à causada pelo KCI e pela endotelina; 6 em 83% de 24 ensaios, a liberação basal de NO foi maior na AMI esquerda, em comparação com a AMI direita; 7 ensaios biológicos de AMIs demonstraram a importância da PGI2 nas condições de hipóxia, uma vez que a indometacina aboliu vasodilatação adicional em resposta à hipóxia em condições de vasodilatação induzida pela liberação basal de NO; 8 não ocorreram diferenças significantes de resposta, comparando-se estudos realizados em AMIs direita e esquerda.

Sarcoma da Artéria Pulmonar — dificuldades diagnósticas e terapêuticas

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Sofia Neves

2003-01-01

suggested TEPD.Blood Analysis performed before anticoagulation therapy: Lupus Anticoagulant - and Ig M Anticardiolipin+.Our presumptive initial diagnosis was TEPD in a patient with a hypercoagulable state.Intravenous heparin was started, with some clinical improvement but 2 months later he was readmitted, due to clinical and radiological deterioration. Pulmonary Thromboendarterectomy was considered but a right pneumonectomy was necessary because of bleeding. He died of ARDS in a single lung in the 7 th day after surgery. Pathology revealed pulmonary artery sarcoma with pulmonary and pleural metastases.REV PORT PNEUMOL IX (1: 41-51 Palavras-chave: Sarcoma da Artéria Pulmonar, Tumores Vasculares, Key-words: Pulmonary Artery Sarcoma, Vascular Tumour

Aneurisma idiopático de artéria radial: relato de caso Idiopathic radial artery aneurysm: case report

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Luiz Ernani Meira Jr.

2011-12-01

Full Text Available Os aneurismas da artéria radial são extremamente raros. Em sua maioria, consistem de pseudoaneurismas pós-traumáticos. Os aneurismas da artéria radial verdadeiros podem ser idiopáticos, congênitos, pós-estenóticos ou associados a patologias, tais como vasculites e doenças do tecido conjuntivo. Foi relatado um caso de aneurisma idiopático de artéria radial em uma criança de três anos, que, após completa investigação diagnóstica complementar, foi submetida à ressecção cirúrgica.Radial artery aneurysms are extremely rare. Post-traumatic pseudoaneurysms are the vast majority. True radial artery aneurysms can be idiopathic, congenital, poststenotic, or associated with some pathologies, such as vasculitis and conjunctive tissue diseases. We report a case of an idiopathic aneurysm of the radial artery in a three-year-old child who was submitted to surgical resection after a complete diagnostic approach.

State-of-the-art

DEFF Research Database (Denmark)

Pecher, Arthur; Kofoed, Jens Peter

This report presents a short overview on the state-of-the-art of wave tank testing of wave energy converters (WEC). Here for, it focuses mainly on the Phase 1 and 2 development phases of wave energy converters, as these are done in the wave tank (WEC), while the other development phases are perfo......This report presents a short overview on the state-of-the-art of wave tank testing of wave energy converters (WEC). Here for, it focuses mainly on the Phase 1 and 2 development phases of wave energy converters, as these are done in the wave tank (WEC), while the other development phases...

Aneurisma da artéria isquiática persistente: relato de caso de tratamento endovascular

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Dominique Rodas Costa

2018-03-01

Full Text Available Resumo A persistência da artéria isquiática é uma anomalia vascular congênita rara cuja principal complicação é a dilatação aneurismática. O quadro clínico pode incluir sintomas decorrentes da dilatação arterial e da isquemia, causada por trombose ou embolização distal. O tratamento dessa afecção rara conta com opções diversas que abrangem desde a ligadura do aneurisma até a correção endovascular. O presente relato descreve o caso de uma paciente do sexo feminino com queixa de tumoração pulsátil na região glútea. Foi encaminhada ao serviço de referência e realizou angiotomografia, que evidenciou persistência completa da artéria isquiática bilateralmente, com dilatação aneurismática à esquerda. A paciente foi submetida a tratamento endovascular do aneurisma, através de punção contralateral, com implante de dois stents revestidos com manutenção da perviedade distal da artéria. A manutenção da perviedade é particularmente importante nos casos da forma completa dessa variação anatômica. A paciente cursou com boa evolução.

Desabrochando uma rosa de um rocket: memória, performance e resistência na arte moçambicana

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Sílvia Raposo

2016-06-01

Full Text Available Este artigo procura compreender, através do trabalho artístico de Gonçalo Mabunda, como o Núcleo de Arte de Maputo leva a cabo uma «reciclagem» e reprodução dos ícones de guerra, de forma a criar toda uma produção identitária baseada na memória histórica. Debruço-me sobre a forma como as esculturas podem abrir espaço a um lugar de memória liminar que permite a negociação de significados e mnemónicas associadas à Guerra Civil, espelhando contra-memórias coadas pela experiência pessoal do artista. Analisa-se a capacidade expressiva e simbólica da linguagem escultórico-performativa enquanto comunicadora de significados sociais e políticos, e como forma de mise-èn-scene do «drama social».

Rock my art : ou O novo esteticismo de Porquê choras? ou O dia em que Eduk entrou para a história da arte

OpenAIRE

Leonardo Azevedo Felipe

2013-01-01

A partir do estudo de um caso específico – a performance Porquê Choras?, de Rogério Nazari e Telmo Lanes, ocorrida em 14 de agosto de 1985, em Porto Alegre, e que contou com a participação do grupo de rock Defalla – este trabalho busca narrar uma História (Roqueira) da Arte, apontando momentos no século XX em que o campo das artes visuais foi cruzado com o da cultura popular massiva representada pelo rock. Em paralelo, esta pesquisa também propõe reflexões acerca do fazer da própria história ...

Origem e distribuição das principais artérias do membro torácico de Cuniculus paca (Linnaeus, 1766

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Leonardo M. Leal

Full Text Available RESUMO: Objetivou-se descrever as artérias do membro torácico da paca (Cuniculos paca Linanaeus, 1766, mediante a dissecação da região. Para tanto, foram utilizadas 10 pacas adultas, machos ou fêmeas, pesando entre cinco e 10 kg do plantel de pacas do setor de Animais Silvestres da FCAV, Unesp, Jaboticabal-SP. Nos animais, injetou-se látex pela artéria carótida comum esquerda para preencher e corar todo o sistema arterial, seguido pela fixação em formaldeído a 10% e conservação em solução salina a 30% para dissecação anatômica das principais artérias do arco aórtico, braço e antebraço, identificando-se a origem e distribuição destes vasos. Os resultados foram foto documentados e discutidos com base na literatura sobre os animais domésticos, e roedores selvagens. De forma geral, as artérias do membro torácico da paca, assemelham-se com as dos carnívoros domésticos, do rato e da cobaia.

As artes adivinhatórias e a psiquiatria do futuro

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Rogério da Silva Paes Henriques

Full Text Available Resumo Estuda-se a psiquiatria como “arte adivinhatória ou divinatória” engajada na previsão do futuro. Pretende-se assinalar o projeto biopolítico de gerenciamento da vida atrelado à psiquiatria contemporânea. Para tanto, analisa-se a quinta edição do Manual Diagnóstico e Estatístico de Transtornos Mentais (DSM-5, da Associação Americana de Psiquiatria (APA, em sua introdução da discussão da noção de risco, que estabelece ao campo psiquiátrico a prevenção primária como uma de suas metas principais. Isso reflete a reintrodução do eixo dimensional ao modelo categorial adotado pelo DSM, produzindo uma inflação diagnóstica, e denota o mal-estar da psiquiatria contemporânea frente aos seus alcances e limites.

Right coronary artery anatomy: anatomical and morphometric analysis Anatomia da artéria coronária direita: análises anatômicas e morfométricas

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Luis Ernesto Ballesteros

2011-06-01

Full Text Available BACKGROUND: It is necessary knowing the large variability of right coronary (RCA artery specialty for its implications in surgical procedures and clinic events. This variability is usually related to the length, branches quantity, origin and irrigated territories. OBJECTIVE: To evaluate by direct examination the morphologic expression of RCA in Colombian people. METHODS: RCA were measured in 221 fresh hearts by RCA ostium canalization with polyester synthetic resin that was injected in their branches. RESULTS: The caliber of the RCA proximal segment and at the level of the acute angle of the heart was 3.42 ± 0.66 mm and 2.9 ± 0.50 mm, respectively. It ended between crux cordis and the left margin in 75.6% of specimens. Posterior interventricular artery (PIA reached the inferior third, or the apex, or the anterior interventricular sulcus in 149 (67.4% cases. Sinoatrial node artery (SNA originated in the right coronary in 134 (60.6% cases, 77 (34.9% from circumflex artery (CxA and from both in 10 (4.5%. Posterior right diagonal artery (PRDA was noted in 38 (17.2% hearts, but only 6% of the sample with long PIA, concomitantly presented the PRDA (P = 0.001. In right dominance SNA were originated from RCA in 54.7% and form CxA in 46.3% (P = 0.06. CONCLUSIONS: Caliber of the RCA and its branches is lesser than the majority of previous studies, while the PRDA frequency is slightly higher than the reported in literature. Clinical and pathological scenarios by these variations should be taken into account: hemodynamic procedures, cardiac surgery and arrhythmias from coronary occlusive disease.INTRODUÇÃO: É necessário conhecer a grande variabilidade da artéria coronária direita (ACD, especialmente por suas implicações nos procedimentos cirúrgicos e eventos clínicos. Esta variabilidade está geralmente relacionada à extensão, à quantidade de ramos, à origem e aos territórios irrigados. OBJETIVO: Avaliar por exame direto a expressão morfol

Cultivating Demand for the Arts: Arts Learning, Arts Engagement, and State Arts Policy. Summary

Science.gov (United States)

Zakaras, Laura; Lowell, Julia F.

2008-01-01

The findings summarized in this report are intended to shed light on what it means to cultivate demand for the arts, why it is necessary and important to cultivate this demand, and what state arts agencies (SAAs) and other arts and education policymakers can do to help. The research considered only the benchmark arts central to public policy:…

Support for Arts Education. State Arts Agency Fact Sheet

Science.gov (United States)

National Assembly of State Arts Agencies, 2011

2011-01-01

Supporting lifelong learning in the arts is a top priority for state arts agencies. By supporting arts education in the schools, state arts agencies foster young imaginations, address core academic standards, and promote the critical thinking and creativity skills essential to a 21st century work force. State arts agencies also support…

State Arts Agency Fact Sheet: Support for Arts Education

Science.gov (United States)

Online Submission, 2015

2015-01-01

This national overview of state arts agency grants and services for arts education includes summary statistics and geographic distribution. The fact sheet uses data from Final Descriptive Reports of state arts agency grant-making activities submitted annually to the National Assembly of State Arts Agencies (NASAA) and the National Endowment for…

Artérias das glândulas adrenais em avestruzes (Struthio camelus

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Angelita das Graças de Oliveira Honorato

2011-10-01

Full Text Available http://dx.doi.org/10.5007/2175-7925.2012v25n1p125 O crescimento da criação racional de avestruz e seus subprodutos têm despertado interesse dos pesquisadores em ampliar os estudos com esse animal. Assim, áreas de pesquisa básicas, como a morfologia, tornam-se necessárias para dar subsídios às áreas aplicadas. Com o intuito de contribuir com o conhecimento referente aos arranjos vasculares das glândulas adrenais, utilizaram-se 30 avestruzes (Struthio camelus, de quatro dias de vida, tendo seus contingentes arteriais marcados com solução aquosa corada de Neoprene Látex “450” a 50% e fixados em solução diluída de formol a 10%. A cavidade celomática foi exposta para a identificação das referidas glândulas, que são órgãos pares e encontram-se recobertas por tecido conjuntivo frouxo, disposto simetricamente nos dois antímeros, lateralmente à aorta descendente, caudalmente aos pulmões e cranio-medialmente aos lobos craniais dos rins. O aporte sanguíneo arterial, em ambos os antímeros, é proveniente das artérias adrenais direita e esquerda, dos ramos das artérias renais craniais direita e esquerda e dos ramos diretos da aorta descendente. Independentemente da origem, os números de ramos destinados às glândulas adrenais variaram de um a dois e de um a três respectivamente para os antímeros esquerdo e direito.

State of the States 2016: Arts Education State Policy Summary

Science.gov (United States)

Aragon, Stephanie

2016-01-01

The "State of the States 2016" summarizes state policies for arts education identified in statute or administrative code for all 50 states and the District of Columbia. Information is based on a comprehensive search of state education statute and codes on each state's relevant websites. Complete results from this review are available in…

Assessment of the State of the Art of Integrated Vehicle Health Management Technologies as Applicable to Damage Conditions

Science.gov (United States)

Reveley, Mary S.; Kurtoglu, Tolga; Leone, Karen M.; Briggs, Jeffrey L.; Withrow, Colleen A.

2010-01-01

A survey of literature from academia, industry, and other Government agencies assessed the state of the art in current integrated vehicle health management (IVHM) aircraft technologies. These are the technologies that are used for assessing vehicle health at the system and subsystem level. This study reports on how these technologies are employed by major military and commercial platforms for detection, diagnosis, prognosis, and mitigation. Over 200 papers from five conferences from the time period of 2004 to 2009 were reviewed. Over 30 of these IVHM technologies are then mapped into the 17 different adverse event damage conditions identified in a previous study. This study illustrates existing gaps and opportunities for additional research by the NASA IVHM Project.

O museu de arte perante o desafio da memória

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Maria Isabel Rocha Roque

Full Text Available Os museus surgiram como síntese representativa de uma realidade, impondo questões sobre a preservação das memórias inerentes à função e à simbologia dos objetos. No caso dos museus de arte, o objetivo era constituir um repositório patrimonial que contribuísse para a criação de uma identidade cultural, pelo que os objetos eram avaliados sobretudo em função da excelência dos seus parâmetros estéticos, em detrimento de outras significações; também a historiografia da arte privilegiava os aspectos formais, estabelecendo atribuições e estilos. Essas circunstâncias determinaram a descontextualização do objeto no espaço museológico. Porém, a partir de meados do século XX, os estudos sobre o público, enquanto entidade plural e diversificada, e os debates teóricos em torno da significação do objeto contribuíram para uma redefinição do discurso museológico. O museu passou a compensar as perdas inerentes ao processo de musealização por meio de um conjunto de procedimentos e ferramentas que recontextualizam os significados do objeto nas suas múltiplas valências. Entre ambos os vetores, de descontextualização e de recontextualização, o museu desafia a nossa memória pessoal e coletiva.

O que restou de tudo isso? Signos da arte e da memória em 'Cinzas do Norte'

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Julio Pimentel Pinto

2016-10-01

Full Text Available O texto identifica a construção de três perfis distintos de artistas no romance Cinzas do Norte, de Milton Hatoum, e, por meio deles, reflete sobre a relação entre ficção e história, sobre a evocação do passado, o trabalho da memória e os sentidos da arte.

Dopplervelocimetria da artéria cerebral média fetal e outros parâmetros de vitalidade fetal na sobrevida neonatal em gestações com insuficiência placentária

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Roseli Mieko Yamamoto Nomura

2013-08-01

Full Text Available OBJETIVO: Estudar a dopplervelocimetria da artéria cerebral média fetal em gestações complicadas pela insuficiência placentária e verificar o seu papel no prognóstico de sobrevida neonatal. MÉTODOS: Trata-se de estudo prospectivo de 93 gestantes com diagnóstico de insuficiência placentária estabelecida antes da 34ª semana. A insuficiência placentária foi caracterizada pelo Doppler de artéria umbilical (AU alterado (> p95. Foram analisados os seguintes parâmetros: índice de pulsatilidade (IP da artéria umbilical (AU, IP da artéria cerebral média (ACM, relação cerebroplacentária -RCP(IP-ACM/IP-AU, pico de velocidade sistólicada ACM (PVS-ACM e IP para veias (IPV do ducto venoso (DV. Os parâmetros foram analisados pelos valores absolutos, em escores zeta (desvios padrão a partir da média ou múltiplos da mediana (MoM. O desfecho investigado foi o óbito neonatal no período de internação após o nascimento. RESULTADOS: Nas 93 gestações analisadas, ocorreram 25 (26,9% óbitos neonatais. No grupo que evoluiu com óbito neonatal, quando comparado com o grupo com sobrevida, houve associação significativa com o diagnóstico de diástole zero ou reversa (88% vs. 23,6%, p < 0,001, com maior mediana do IP da AU (2,9 vs. 1,7, p < 0,001 e seu escore zeta (10,4 vs. 4,9, p < 0,001; maior valor do PVS-ACM MoM (1,4 vs. 1,1, p = 0,012; menor valor da RCP (0,4 vs. 0,7, p < 0,001; maior valor do IPV-DV (1,2 vs. 0,8, p < 0,001 e no escore zeta do DV (3,6 vs.0,6, p<0,001. Na regressão logística, as variáveis independentes para a prediçãodoóbito neonatal foram a idade gestacional no parto (OR = 0,45; IC95% 0,3 a 0,7, p < 0,001 e o escore zeta do IP-AU (OR 1,14, IC95% 1,0 a 1,3, p = 0,046. CONCLUSÃO: Apesar da associação verificada pela análise univariada entre a morte neonatal e os parâmetros da dopplervelocimetria cerebral fetal, a análise multivariada identificou a prematuridadeeograude insuficiência da circula

Revascularização do miocárdio com enxerto livre de artéria radial: experiência inicial

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Giorgio PIERACCIANI

1997-07-01

Full Text Available Foram estudados os resultados precoces do uso do enxerto livre de artéria radial (AR para a revascularização do miocárdio em 20 pacientes operados no período de maio a novembro de 1996. Pertenciam ao sexo masculino 16 (80% com média de idades de 57,1 anos (35 a 69. Foi utilizada a esternotomia mediana com o auxílio da circulação extracorpórea e a cardioplegia sangüínea intermitente em todos os casos. A AR foi retirada do membro superior não dominante e utilizada como parte aorto-coronária em 100% dos casos. Foi realizado um total de 64 enxertos, com média de 3,2 por pacientes (2 a 5. A AR foi anastomosada ao ramo diagonal 9 (45% vezes, ao ramo marginal esquerdo da artéria circunflexa 6 (30%, à coronária direita 4 (20% e ao ramo interventricular anterior 1 (5%. A artéria torácica interna esquerda (ATIE foi utilizada em 100% dos pacientes, a artéria torácica interna direita (ATID em 7 (35%, e a veia safena em 13 (65%. O diltiazen oral foi utilizado no período per-operatório para a prevenção do espasmo arterial. Não houve mortalidade hospitalar ou durante o seguimento de até 10 meses. Foi realizado estudo cineangiocoronáriográfico no período pós-operatório imediato em 17 (85% pacientes, que mostrou fluxo normal na AR em 16 (94,1%. Não houve seqüelas no membro superior do doador. Os resultados observados são semelhantes aos obtidos com a revascularização do miocárdio pelas técnicas usuais no Serviço, sem incremento na morbimortalidade precoce. A normalidade precoce do enxerto de artéria radial mostrou-se comparável ao da artéria torácica interna esquerda, coincidindo com os recentes relatos da técnica.Twenty patients underwent myocardial revascularization with a radial artery (RA between May and November 1996. The mean age was 57.1 years (35 to 69 and 16 patients (80% were male. Midsternotomy, extracorporeal circulation and antegrade blood cardioplegia were always used. A total of 64 grafts, 3.2 per

Estudo anatômico do trajeto da artéria vertebral na coluna cervical inferior humana Anatomical study of the vertebral artery path in human lower cervical spine

Directory of Open Access Journals (Sweden)

Ben Hur Junitiro Kajimoto

2007-01-01

Full Text Available O aumento da utilização de novas técnicas e materiais de síntese para o tratamento cirúrgico de afecções da coluna cervical baixa foi acompanhado da crescente preocupação em relação às complicações que podem ocorrer. A técnica de fixação transpedicular, amplamente utilizada para os outros níveis da coluna vertebral, quando realizada na coluna cervical, apesar de conferir maior estabilidade quando comparada a outras técnicas, pode cursar com complicações graves como lesão da artéria vertebral, lesão de raiz nervosa, além de lesão da articulação facetária. A vértebra C7, no entanto, é considerada mais segura para a realização de tal procedimento, já que, na grande maioria das pessoas, segundo os estudos anatômicos disponíveis, esta não possui a artéria vertebral dentro de seu forame transverso, pois este vaso irá penetrar tal estrutura apenas na vértebra C6. Como hoje existem apenas estudos de imagem para avaliação do trajeto desta artéria e suas variações anatômicas, realizamos este estudo anatômico dissecando 40 artérias vertebrais de cadáveres para avaliar a incidência das variações anatômicas. Encontramos 3 casos onde a artéria vertebral penetrou o forame transverso já em C7 (7,5%, o que aumentaria o risco de uma técnica transpedicular neste nível. O restante das peças anatômicas possuíam anatomia habitual.The increasing use of new techniques and materials for surgical treatment of lower cervical spine conditions has come along with an increasing concern regarding potential complications that might occur. The transpedicular fixation technique, frequently used in other spine levels, is used on the cervical spine, while providing more stability than other techniques, it may cause serious complications such as vertebral artery injury, nervous root injury, or facet joint injuries. However, the C7 vertebra is considered safer for performing this procedure, since, in the vast majority of

Comunicação direta entre artéria pulmonar direita e átrio esquerdo: relato de dois casos

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SCHIMIN Luiz Carlos

2000-01-01

Full Text Available A comunicação direta entre a artéria pulmonar direita e o átrio esquerdo é uma condição rara, tendo sido relatados menos de 40 casos em toda a literatura. Apresentação clínica é variável, podendo o paciente mostrar-se com quadro de cianose, dispnéia ou insuficiência cardíaca. No entanto, o diagnóstico pode ser facilmente feito com métodos de imagem. O tratamento cirúrgico oferece a cura completa com baixa morbi-mortalidade. Sem o mesmo, sérias complicações podem advir como embolia ou abscesso cerebral. Os autores apresentam dois casos de comunicação direta entre artéria pulmonar direita e átrio esquerdo. São discutidas as teorias embriogênicas e as variantes anatômicas desta anomalia congênita.

Trombose da artéria carótida interna devida a trauma penetrante no pálato mole: relato de caso

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BORGES GUILHERME

1999-01-01

Full Text Available Descrevemos caso de trauma penetrante na região oral em criança, evoluindo com oclusão da artéria carótida interna e déficit neurológico correspondente. A tomografia computadorizada e a ressonância nuclear magnética demonstram a oclusão completa da artéria carótida interna. Enfatizamos esta rara complicação de trauma oral, comum em crianças e discutimos os aspectos patogênicos.

Trabalhando para chegar ao significado: pequenas histórias do ateliê de artes

Directory of Open Access Journals (Sweden)

Ana Cristina Aloia Ronconi

2016-08-01

mediado, pela arte, entre a materialidade do mundo e a subjetividade dos participantes, o ateliê de artes enseja a busca do significado como finalidade de todo processo educativo.  Palavras-chave: Processo educativo. Pequenas histórias. Ateliê de artes. Abstract The present article discusses the role of the “atelier of Arts” in the context of the education understood from its integral and existential dimension, and not only reduced to the teaching-learning process that takes place at formal school. The living experience of the “ateliers of Arts” for children, coordinated by an Art-educator in the city of Sao Paulo, enriches the discussion, when treats the space and time dedicated to the activity as a continent for the development of the pupils’ subjectivity, in the sense of soul-making. In the contact, mediated by the Art, between the world’s materiality and the subjectivity of the pupils, the “atelier of Arts” proposes the searching of meaning as the goal of all educative process. Keywords: Educative process. Short stories. Atelier of arts.

State of the art

International Nuclear Information System (INIS)

Lederman, L.M.

1983-01-01

There is a large body of experience in high luminosity data taking in fixed target research. We try to consider a wide variety of high rate experiments which were limited by the detector (not by available beam) to a preset number of collisions per second. We then attempt to translate these state-of-the-art experiments to effective collider experiments. To this end, we extend the chosen detector to a comparison 4π collider detector operating near 1 TeV. There are several issues: (1) effective solid angle must be translated to approx. = 4π, (2) environments may be quite different, e.g., beam dump near fixed target or beam halo muons vs. collider backgrounds, (3) the multiplicity varies over the experiments selected and (4) we have to treat open vs closed geometries. The large variety of experiments selected is designed to average over the causes for detector limitation. Finally we chose detectors which have produced physics in order to gauge the state of the art

The modeling of fuel rod behaviour under RIA conditions in the code DYN3D

International Nuclear Information System (INIS)

Rohde, U.

2001-01-01

A description of the fuel rod behaviour and heat transfer model used in the code DYN3D for nuclear reactor core dynamic simulations is given. Besides the solution of heat conduction equations in fuel and cladding, the model comprises a detailed description of heat transfer in the gas gap by conduction, radiation and fuel-cladding contact. The gas gap behaviour is modeled in a mechanistic way taking into account transient changes of the gas gap parameters based on given conditions for the initial state. Thermal, elastic and plastic deformations of fuel and cladding are taken into account within 1D approximation. A creeping law for time-dependent estimation of plastic deformations is implemented. Metal-water reaction of the cladding material in the high temperature region is considered. The cladding-coolant heat transfer regime map covers the region from one-phase liquid convection to dispersed flow with superheated steam. Special emphasis is put on taking into account the impact of thermodynamic non-equilibrium conditions on heat transfer. For the validation of the model, experiments on fuel rod behaviour during RIAs carried out in Russian and Japanese pulsed research reactors with shortened probes of fresh fuel rods are calculated. Comparisons between calculated and measured results are shown and discussed. It is shown, that the fuel rod behaviour is significantly influenced by plastic deformation of the cladding, post crisis heat transfer with sub-cooled liquid conditions and heat release from the metal-water reaction. Numerical studies concerning the fuel rod behaviour under RIA conditions in power reactors are reported on. It is demonstrated, that the fuel rod behaviour at high pressures and flow rates in power reactors is different from the behaviour under atmospheric pressure and stagnant flow conditions in the experiments. The mechanisms of fuel rod failure for fresh and burned fuel reported from the literature can be qualitatively reproduced by the DYN3D

Amiodarona causa vasodilatação dependente do endotélio em artérias coronárias caninas Amiodarone causes endothelium-dependent vasodilation in canine coronary arteries

Directory of Open Access Journals (Sweden)

Alfredo José Rodrigues

2005-03-01

Full Text Available OBJETIVO: Avaliar os efeitos vasodilatadores da amiodarona em artérias coronárias caninas empregando soluções de amiodarona dissolvida em polisorbato 80 ou em água. MÉTODOS: Anéis de artéria coronária, com e sem o endotélio íntegro, foram imersos em solução de krebs e conectadas a um transdutor para aferição de força isométrica promovida por contração vascular. As artérias foram expostas a concentrações crescentes de polisorbato 80, amiodarona dissolvida em água, amiodarona dissolvida em polisorbato 80 e uma apresentação comercial da amiodarona (Cordarone®. Os experimentos foram conduzidos na presença e na ausência dos seguintes bloqueadores enzimáticos: apenas indometacina, Nômega-nitro-L-arginina associada à indometacina e apenas Nômega-nitro-L-arginina. RESULTADOS: O polisorbato 80 causou pequeno relaxamento não dependente do endotélio. O Cordarone®, a amiodarona dissolvida em água e em polisorbato 80 promoveram relaxamento dependente do endotélio, que foi de maior magnitude para a amiodarona dissolvida em polisorbato e para o Cordarone®. Apenas a associação de indometacina com a Nômega-nitro-L-arginina foi capaz de abolir o relaxamento dependente do endotélio provocado pela amiodarona dissolvida em polisorbato 80. CONCLUSÃO: Os resultados obtidos indicam que a vasodilatação promovida pela amiodarona em artérias coronárias caninas é causada principalmente pela estimulação da liberação de óxido nítrico e fatores endoteliais relaxantes dependentes das ciclo-oxigenases.OBJECTIVE: To assess the vasodilating effects of amiodarone on canine coronary arteries by using solutions of amiodarone dissolved in polysorbate 80 or water. METHODS: Rings of coronary arteries, with or without intact endothelium, were immersed in Krebs solution and connected to a transducer for measuring the isometric force promoted by a vascular contraction. The arteries were exposed to increasing concentrations of

Diagnóstico clínico diferencial entre oclusão da artéria carótida interna e da artéria cerebral média A comparative symptomatological study of internal carotid artery occlusion and middle cerebral artery occlusion

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Roberto Melaragno

1971-03-01

Full Text Available Foi feito um estudo comparativo entre o quadro clínico inicial de 61 casos de oclusão da artéria carótida interna e o de 23 casos de oclusão da artéria cerebral média, diagnosticados pela angiografia cerebral e/ou pela necropsia em pacientes submetidos ou não à cirurgia vascular. Os autores comparam a idade dos pacientes, o sexo, o modo de início da afecção, a existência ou não de convulsões e/ou cefaléias, a ocorrência do acidente cerebral durante o sono ou em vigília, a existência de ictos prévios, os níveis de pressão arterial, o grau de consciência, a força muscular, os achados eletrencefalográficos, a palpação e ausculta das carótidas em nível cervical. Os resultados são demonstrados em índices percentuais, pelos quais os autores inferem que não há significância estatística nesses elementos com três exceções: a maior ocorrência de convulsões nas oclusões da artéria cerebral média em relação às da carótida, a oftalmodinamometria e a sintomatologia carotídea cervical. A oftalmodinamometria revela valores significantemente menores nas pressões da artéria central da retina, no mesmo lado da trombose da carótida em 70,0% dos casos, enquanto que medidas normais e simétricas verificaram-se em todos os casos de oclusão da artéria cerebral média em que o exame foi realizado. No que concerne a sinais arteriais no pescoço, havia anormalidades palpatórias e auscultatórias em 52,4% dos pacientes com trombose da carótida e em 8,6% dos casos com oclusão da cerebral média. Concluem os autores, portanto, que apenas a angiografia cerebral permite um diagnóstico seguro entre ambas as sedes da oclusão.A comparative study of the early clinical picture in 61 cases of internal carotid artery occlusion and 23 cases of middle cerebral artery occlusion, diagnosed by cerebral angiography and/or necropsy in patients who were either submitted to surgery or not operated upon is reported. The authors had

State of the art on the heat transfer experiments under supercritical pressure condition

International Nuclear Information System (INIS)

Kim, Hwan Yeol; Song, Chul Hwa

2003-07-01

The SCWR(Super-Critical Water cooled Reactor) is one of the six reactor candidates selected in the Gen-IV project which aims at the development of new reactors with enhanced economy and safety. The SCWR is considered to be a feasible concept of new nuclear power plant if the existing technologies developed in fossil fuel fired plant and LWR technologies together with additional research on several disciplines such as materials, water chemistry and safety. As KAERI takes part in the GIF(Generation IV Forum) for the Gen-IV project, domestic concerns about the SCWR have been recently increased. In order to establish a foundation for the development of SCWR, efforts should be concentrated on the conceptual design of systems and the associated key experiments as well. Heat transfer experiments, among others, under supercritical condition are required for the proper prediction of thermal hydraulic phenomena, which are essential for the thermal hydraulic designs of reactor core. Nevertheless, the experiments have not been performed in Korea yet. This report deals with fundamental surveys on the heat transfer experiments under supercritical conditions, which are required for the understanding of heat transfer characteristics for the thermal hydraulic designs of supercritical reactor core. Investigations on the physical properties of water and CO 2 showed that the physical properties such as density, specific heat, viscosity and thermal conductivity are significantly changed near the pseudo-critical points. The state of the art on the heat transfer characteristics in relation with heat transfer deterioration and heat transfer coefficient is briefly described. In addition, previous experiments with supercritical water as well as supercritical CO 2 and Freon used for an alternating fluid are presented

State of the art on the heat transfer experiments under supercritical pressure condition

Energy Technology Data Exchange (ETDEWEB)

Kim, Hwan Yeol; Song, Chul Hwa

2003-07-01

The SCWR(Super-Critical Water cooled Reactor) is one of the six reactor candidates selected in the Gen-IV project which aims at the development of new reactors with enhanced economy and safety. The SCWR is considered to be a feasible concept of new nuclear power plant if the existing technologies developed in fossil fuel fired plant and LWR technologies together with additional research on several disciplines such as materials, water chemistry and safety. As KAERI takes part in the GIF(Generation IV Forum) for the Gen-IV project, domestic concerns about the SCWR have been recently increased. In order to establish a foundation for the development of SCWR, efforts should be concentrated on the conceptual design of systems and the associated key experiments as well. Heat transfer experiments, among others, under supercritical condition are required for the proper prediction of thermal hydraulic phenomena, which are essential for the thermal hydraulic designs of reactor core. Nevertheless, the experiments have not been performed in Korea yet. This report deals with fundamental surveys on the heat transfer experiments under supercritical conditions, which are required for the understanding of heat transfer characteristics for the thermal hydraulic designs of supercritical reactor core. Investigations on the physical properties of water and CO{sub 2} showed that the physical properties such as density, specific heat, viscosity and thermal conductivity are significantly changed near the pseudo-critical points. The state of the art on the heat transfer characteristics in relation with heat transfer deterioration and heat transfer coefficient is briefly described. In addition, previous experiments with supercritical water as well as supercritical CO{sub 2} and Freon used for an alternating fluid are presented.

História, arte, política: o conceito de regime estético da arte na obra de Jacques Rancière = History, art, politics: the concept of regime aesthetic work of Jacques Rancière

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Voigt, André Fabiano

2013-01-01

Full Text Available O presente artigo pretende analisar o conceito de regime estético da arte na obra do filósofo Jacques Rancière como forma de pensar a produção artística contemporânea fora do viés representacionista, comum em boa parte das análises historiográficas contemporâneas. Rancière faz uma articulação inovadora entre história, arte e política, a qual procura evidenciar o caráter acontecimental da obra de arte, em comparação às análises representacionistas, que sempre vinculam a obra ao contexto histórico e à intencionalidade do autor

Diltiazem como alternativa ao betabloqueador na angiotomografia de artérias coronárias

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Carlos Eduardo Rochitte

2012-08-01

Full Text Available FUNDAMENTO: A redução da frequência cardíaca (FC na angiografia por tomografia das artérias coronarianas (ATCCor é fundamental para a qualidade de imagem. A eficácia dos bloqueadores de cálcio como alternativas para pacientes com contraindicações aos betabloqueadores não foi definida. OBJETIVOS: Comparar a eficácia na redução da FC e variabilidade RR do metoprolol e diltiazem na ATCCor. MÉTODOS: Estudo prospectivo, randomizado, aberto, incluiu pacientes com indicação clínica de ATCCor, em ritmo sinusal, com FC>70bpm e sem uso de agentes que interferissem com a FC. Cinquenta pacientes foram randomizados para grupos: metoprolol IV 5-15 mg ou até FC≤60 bpm(M, e diltiazem IV 0,25-0,60mg/kg ou até FC≤60 bpm (D. Pressão arterial (PA e FC foram aferidas na condição basal, 1min, 3min e 5min após agentes, na aquisição e após ATCCor. RESULTADOS: A redução da FC em valores absolutos foi maior no grupo M que no grupo D (1, 3, 5min, aquisição e pós-exame. A redução percentual da FC foi significativamente maior no grupo M apenas no 1 min e 3 min após início dos agentes. Não houve diferença no 5 min, durante a aquisição e após exame. A variabilidade RR percentual do grupo D foi estatisticamente menor do que a do grupo M durante a aquisição (variabilidade RR/ FC média da aquisição. Um único caso de BAV, 2:1 Mobitz I, revertido espontaneamente ocorreu (grupo D. CONCLUSÃO: Concluímos que o diltiazem é uma alternativa eficaz e segura aos betabloqueadores na redução da FC na realização de angiografia por tomografia computadorizada das artérias coronarianas. (Arq Bras Cardiol. 2012; [online].ahead print, PP.0-0

Espessamento médio-intimal na origem da artéria subclávia direita como marcador precoce de risco cardiovascular Intima-media thickness in the origin of right subclavian artery as an early marker of cardiovascular risk

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Carlos Alberto Engelhorn

2006-11-01

EMI na origem da artéria subclávia direita pode ser considerado um marcador mais precoce para avaliação de risco cardiovascular.OBJECTIVE: Common carotid artery intima-media thickness (IMT is considered a factor of cardiovascular risk and an early marker of coronary artery disease. This study aimed to investigate the existence of a correlation between IMT in the carotid arteries and at the origin of the right subclavian artery, as well as to evaluate IMT in the subclavian artery as an earlier marker of cardiovascular risk. METHODS: One hundred and six consecutive patients, 52 males and 54 females, average age 51 years, underwent color Doppler ultrasonography to evaluate carotid and right subclavian arteries. The relationship between carotid IMT and right subclavian IMT was assessed using the Pearson's correlation coefficient analysis and a 95% confidence interval. Reliability of right subclavian artery IMT measurement for the diagnosis of early thickening (considering a > 0.8 mm carotid thickness as reference was described as to sensitivity, specificity, positive predictive value, negative predictive value, and accuracy. Cut-off values for the right subclavian IMT were indicated by the ROC curve, and p values 0.8 mm. The mean IMT value for the carotid artery was 0.87 mm (SD = 0.23 and for the subclavian artery, 1.17 mm (SD = 0.46, with a 0.31 correlation coefficient (95% CI: 0.12; 0.47. The ROC curve analysis indicated a cut-off value of 0.7 mm for the right subclavian artery IMT, using as reference a 0.8 mm cut-off value for the carotid artery (91% sensitivity, 27% specificity, 66% PPV, 65% NPV, and 66% accuracy. CONCLUSION: Our study showed that carotid artery IMT correlates well with right subclavian artery IMT. With a 0.7 mm cut-off value, it is possible to detect IMT in the right subclavian artery earlier than in the carotid arteries. The IMT at the origin of the right subclavian artery can be considered an earlier marker for the assessment of cardiovascular

Present state and perspectives of RIA in obstetrics and gynecology

Energy Technology Data Exchange (ETDEWEB)

Talas, M; Fingerova, H [Palackeho Univ., Olomouc (Czechoslovakia). Lekarska Fakulta

1979-01-01

A survey is presented of RIA methods introduced by the authors in their laboratory in the course of the last eight years. The results obtained by these methods in various physiological and pathological states are evaluated. The authors point to the possibilities of effective use of RIA for diagnostic purposes in obstetrics and gynecology taking into account also economic and organizational aspects. The most important trends of the use of RIA are accentuated not only in gynecological endocrinology and obstetrics but also in some other related fields, especially in the diagnosis and treatment of malignant diseases.

Present state and perspectives of RIA in obstetrics and gynecology

International Nuclear Information System (INIS)

Talas, M.; Fingerova, H.

1979-01-01

A survey is presented of RIA methods introduced by the authors in their laboratory in the course of the last eight years. The results obtained by these methods in various physiological and pathological states are evaluated. The authors point to the possibilities of effective use of RIA for diagnostic purposes in obstetrics and gynecology taking into account also economic and organizational aspects. The most important trends of the use of RIA are accentuated not only in gynecological endocrinology and obstetrics but also in some other related fields, especially in the diagnosis and treatment of malignant diseases. (author)

The Art of the Renaissance Capitalist State

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Rebeka Vidrih

2007-12-01

This article also highlights the fact that the concept of art developed in Florence – a city-state that played an important role in the early-capitalist world of the Renaissance, but never assumed a leading role like Venice and Genoa. »Art« was thus created through Florence’s efforts to demonstrate its equality and importance and, although it failed to achieve this in the field of the (capitalist economy, it at least succeeded in the field of the (absolutist state that was subordinate to this economy.

Hiperplasia em túnicas de artérias coronárias de beijupirás criados em sistema offshore

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V.F. Pedrosa

2015-06-01

Full Text Available As lesões coronarianas já foram relatadas em espécies de peixes anádromos, com características semelhantes às observadas em aterosclerose humana, mas não em peixes cultivados sem interferência de padrões reprodutivos. Objetivou-se descrever lesões coronarianas em beijupirá (Rachycentron canadum criado em sistema offshore, em 54 exemplares coletados ao longo do cultivo de oito meses. Amostras de tecido cardíaco de alevinos e juvenis foram submetidas à análise histopatológica e à microscopia eletrônica de transmissão (MET, para visualização de lesões coronarianas, sendo as lâminas histológicas coradas pela técnica de hematoxilina-eosina, ácido periódico de Schiff, alcian blue e reticulina de Gomori. Exames realizados pela fotomicroscopia de luz evidenciaram lesões arteriais caracterizadas por hiperplasia das túnicas íntima e média de artérias coronárias em, respectivamente, 29,63% e 79,63% dos animais, com redução do lúmen arterial. Na MET, foram observadas alterações na estrutura das coronárias com espessamento do endotélio e membrana basal, proliferação de fibroblastos e fibras colágenas, com acúmulo de material lipídico subendotelial, resíduos celulares aderidos à membrana basal e vesículas pinocitóticas com presença de lisossomos isolados. Constatou-se que os peixes da espécie Rachycentron canadum criados em cativeiro desenvolvem lesão arterial do tipo crônica degenerativa inflamatória.

Oclusão bilateral das artérias carótidas internas, sífilis meningovascular e SIDA: relato de caso

OpenAIRE

LAMBRECHT,FLORISBERTO; SÁ,DANIEL S. DE; KOERBEL,ANDREI; TAMANINI,ALEXANDRO; MACHARETH,SÁVIO L.; SCOLA,ROSANA HERMINIA; TEIVE,HÉLIO A. G.; WERNECK,LINEU CESAR

1999-01-01

Relatamos um caso de obstrução bilateral na origem das artérias carótidas internas, apresentando como sinais/sintomas associados hemiparesia e hipoestesia superficial e profunda à direita, associada a sífilis meningovascular em paciente com SIDA. Tomografia de crânio apresentou pequenas lesões hipodensas, com predomínio à esquerda, e arteriografia evidenciou oclusão bilateral das artérias carótidas. A associação entre lues e SIDA não é infrequente, porém o quadro oligossintomático do paciente...

Intracranial intrasellar kissing carotid arteries: case report Artérias carótidas intracranianas intra-selares "que se beijam": relato de caso

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Arthur de Azambuja Pereira Filho

2007-06-01

Full Text Available Intracranial "kissing" carotid arteries are a rare variant of the carotid arteries, where both internal carotid arteries deviate medially and touch each other near the midline within the sphenoid sinus or the sphenoid bone, including the sella. This anomaly is particularly important since it may cause or mimic pituitary disease and also may complicate transsphenoidal surgery. We report a rare case of intracranial intrasellar kissing carotid arteries in a 57-years-old woman that was submitted to a computed tomography angiography during investigation of a sudden headache, and to discuss the clinical relevance of this radiological finding.Artérias carótidas intracranianas "que se beijam" representam rara variação da anatomia arterial, onde ambas as artérias carótidas internas desviam-se medialmente e tocam-se próximo à linha media dentro do seio esfenoidal ou do osso esfenóide, incluindo a sela túrcica. Essa anomalia é particularmente importante, pois pode causar ou simular doença pituitária e ainda pode complicar uma cirurgia transesfenoidal. Relatamos um raro caso de artérias carótidas intracranianas "que se beijam" em mulher de 57 anos, a qual foi investigada por angiotomografia por quadro de cefaléia súbita. Discutimos a relevância clínica desse achado radiológico.

Integrated Simulation for HVAC Performance Prediction: State-of-the-Art Illustration

NARCIS (Netherlands)

Hensen, J.L.M.; Clarke, J.A.

2000-01-01

This paper aims to outline the current state-of-the-art in integrated building simulation for performance prediction of heating, ventilating and air-conditioning (HVAC) systems. The ESP-r system is used as an example where integrated simulation is a core philosophy behind the development. The

Performance of office workers under various enclosure conditions in state-of-the-art open workplaces

Science.gov (United States)

Yoon, Heakyung Cecilia

The objective of this thesis is to more firmly establish the importance of physical attributes of workstations on the performance of workers undertaking a range of complex tasks while subjected to the visual and noise distractions prevalent in state-of-the-art North American office settings. This study investigates objective and subjective evaluations of noise and performance given a range of current physical work environments. The study provides criteria for architects, interior designers and managers, to select distraction-free office environments to deliver better performance. The concluding chapter helps to establish the importance of designing more acoustically responsible work settings in state-of-the-art office projects. With 102 subjects (23 native speakers of English per each of three workstation types), controlled experiments were completed over a six month testing period in three different work settings---four foot partitions on two sides, seated privacy with six foot partitions on three sides, and a closed office with eight foot partitions, a door and a ceiling, with two acoustic environments (office sounds with and without speech at a controlled 45 dBA level at the receiver), the experimental results were statistically significant. Another finding was the lack of a significant effect of background sound variations on simple or complex task performance. That implies the current acoustical evaluation tool, the Articulation Index, may not be an appropriate tool to adequately and conclusively assess the acoustic impact of open workplaces on individual performance. Concerning the impact of acoustic conditions on occupant performance from the experiments, Articulation Index values do not reflect the potential relation of workstation designs and subjects' performance and moods. However, NIC connected with speech privacy rating has the potential to be a better evaluation tool than AI for open workplaces. From the results of this thesis, it is predicted that

Origem anômala da artéria pulmonar direita em aorta ascendente (hemitruncus Anomalous origin of right pulmonary artery from ascending aorta (hemitruncus

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Ivan Romero Rivera

1998-05-01

Full Text Available A origem da artéria pulmonar direita em aorta ascendente é uma anomalia congênita rara, com poucos casos descritos na literatura. Descrevemos dois casos desta malformação, um associado à interrupção de arco aórtico tipo B. Em ambos, o diagnóstico foi realizado mediante ecocardiografia bidimensional, com confirmação angiográfica em um. A origem da artéria pulmonar direita era próxima à valva aórtica, anomalia patogeneticamente diferente da origem perto da artéria inominada.The origin of the right pulmonary artery from the ascending aorta is a rare congenital anomaly, with very few reports in the literature. We describe two cases of this rare malformation, one of them, associated with interruption of the aortic arch (type B. In both cases, the diagnosis was made by two-dimensional echocardiography, with angiographic confirmation in one of them. The origin of the right pulmonary artery was close to the aortic valve, anomaly pathogenetically distinct from the type that arises close to the innominate artery.

Fístula da artéria coronária: relato de três casos operados e revisão da literatura

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Antônio Amauri GROPPO

2002-09-01

Full Text Available Fístulas das artérias coronárias têm incidência baixa entre as cardiopatias congênitas, muitas vezes assintomáticas, devendo ser suspeitadas quando há presença de sopro contínuo no precórdio. Podem apresentar sintomas de precordialgia ou insuficiência cardíaca e devem ser estudadas adequadamente para tratamento seguro, tanto cirúrgico como por cateterismo ou acompanhamento clínico. No presente trabalho são relatados três casos tratados por operação com resultado satisfatório e a literatura é revisada.Coronary arteries fistulas have low incidence on the congenital heart defects, many times they are assymptomatic, and have to be suspected when continuous cardiac murmur is present. The symptoms can be precordial pain or cardiac failure and they must be studied correctly to a save surgical management or clinic treatment. In this paper are related three cases surgically treated with good results and literature review.

Oclusão da artéria central da retina em paciente com poliangeíte microscópica

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Cláudia Gallicchio Domingues

2015-12-01

Full Text Available RESUMO A poliangeíte microscópica é uma vasculite necrotizante sistêmica que acomete arteríolas, capilares e vênulas, mas também pode atingir pequenas e médias artérias. É considerada uma doença rara, idiopática e autoimune. Diversas anormalidades oculares e sistêmicas estão associadas às oclusões arteriais retinianas. Dentre as doenças vasculares do colágeno, a literatura cita como possíveis causas de obstrução das artérias retinianas o lúpus eritematoso sistêmico, a poliarterite nodosa, a arterite de células gigantes, a granulomatose de Wegener e a granulomatose linfóide de Liebow. Até o presente momento, não se encontrou na literatura relatos da associação de casos de oclusão arterial retinana associados à PAM. Os autores relatam o caso de um paciente com poliangeíte microscópica que apresentou comprometimento renal importante e oclusão da artéria central da retina unilateral. Atenta-se para a inclusão de pesquisa da PAM, através do p-ANCA, na avaliação de possível origem sistêmica em pacientes acometidos por oclusão arterial retiniana.

State of the art in power cable design, failure mechanisms and testing

International Nuclear Information System (INIS)

Orton, H.

2005-01-01

This presentation describes state of the art in power cable design, failure mechanisms and testing. It gives a history of cable usage and design of cables, describes different cable types, assessment of the condition of cables, aging and failures, testing and diagnostics

Vicissitudes of Edo State Council for Arts and Culture Performing ...

African Journals Online (AJOL)

Abstract. The ding-dong charade of Edo State Council for Arts and Culture Performing Troupe (ESCFAACPT) cannot be divorced from the vacillating condition the establishment had been experiencing since its establishment. This condition is fore-grounded, first, on the cacophony of nomenclature that the council had been ...

Síndrome do aprisionamento da artéria poplítea: relato de caso Popliteal artery entrapment syndrome: case report

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Marcelo Bettega

2011-12-01

Full Text Available A síndrome do aprisionamento da artéria poplítea caracteriza-se pela compressão desta artéria sendo a principal causa de claudicação intermitente em jovens. Homem, 18 anos, branco, apresentava parestesia, frialdade e palidez do pé direito, iniciada 24 horas após exercício físico. Em membro inferior direito, ausência de pulsos tibial posterior e dorsal do pé. À flexão dorsal e flexão plantar forçadas, houve diminuição dos pulsos tibial posterior e dorsal do pé à esquerda. Tratado cirurgicamente, o paciente apresentou pulso em ambas as artérias. A síndrome é mais frequente em homens e a prevalência varia entre 0,16 e 3,5%. O aprisionamento da artéria poplítea tipo III é mais comum. A falta de tratamento pode levar à embolia, trombose e aneurismas pós-estenóticos. Esta síndrome deve ser lembrada como causa de dor na perna, especialmente em homens jovens e de prática esportiva intensa.Popliteal artery entrapment syndrome is the compression of the popliteal artery and is the main cause of intermittent claudication in young patients. An 18-year-old man was admitted at our service complaining of right foot paresthesia, coldness, and pallor that appeared 24 hours after physical activity. Posterior tibial and dorsal artery of foot pulses were not present in right lower limb. Diminished posterior tibial and dorsal artery of the foot pulses were found in left lower limb at dorsal flexion and forced plantar flexion. After surgery, both pulses were present. This syndrome is more frequent in men and its prevalence varies between 0.16 and 3.5%. Popliteal artery entrapment type III is most common. Non-treated entrapment can lead to embolism, thrombosis and post-stenotic aneurysms. The syndrome must be considered as a cause of lower limb pain specially in young men with intense sport practice history.

Anatomia vascular das artérias renais natomia e gonadais de Podocnemis unifilis Schweigger, 1812 (Testudines, Pelomedusidae = Vascular anatomy of renal and gonadal arteries of Podocnemis unifilis Schweigger, 1812 (Testudines-Pelomedusidae

Directory of Open Access Journals (Sweden)

Líria Queiroz Luz Hirano

2009-04-01

Full Text Available Este trabalho foi desenvolvido com o intuito de enriquecer o conhecimento sobre a morfologia vascular das artérias renais e gonadais de Podocnemis unifilis, facilitando o entendimento da fisiologia clínica e cirúrgica destes animais. Foram utilizados cincoexemplares machos de Podocnemis unifilis (tracajá, coletados segundo a Licença nº 066/2004- Ibama/RAM. A artéria carótida esquerda e a veia femoral direita foram canuladas e, pelas mesmas, foi introduzida solução fisiológica para lavagem do sistema vascular; em seguida,aplicou-se solução de Neoprene Látex “450” corada com pigmento específico (Globo S/A Tintas e Pigmentos. O material foi fixado em solução de Formol tamponado a 10% por um período mínimo de 96h. Uma abertura central e de formato quadrangular foi feita na metade caudal do plastrão e casco, de forma a expor os ramos da artéria aorta que irrigam os rins e as gônadas. Observou-se que as artérias renais se originam da face ventral da artéria aorta dorsal, em número de dois pares para cada rim e, em um único exemplar, elas originaram uma artéria renal direita e duas esquerdas. A artéria gonadal surgiu a partir da artéria renal, e apenas um par penetrou pela face dorsal de cada gônada.This work was developed with the aim of enriching knowledge on the vascular morphology of renal and gonadal arteries of Podocnemisunifilis, thus increasing the understanding of the clinical and surgical physiology of these animals. Five Podocnemis unifilis males were used, collected according to license no. 066/2004-Ibama/RAM.The left carotid artery and right femoral vein were cannulated, and a serum solution was introduced to remove obstructions from the vascular system. A solution of Neoprene Latex “450” dye was injected. The material was fixed in a solution of 10% formaldehyde for a period of 96 hours. Next, a square-shaped central opening was made in the caudal end of the plastron and bridge, exposing the branches

A fábrica do sensível: as imagens contraditórias da arte

OpenAIRE

da Costa - Universidade do Estado do Rio de Janeiro, Luiz Cláudio

2016-01-01

Defendendo a estética como terreno afinado com a batalha pela emancipação de novas formas da subjetividade política, Jacques Rancière ressalta o papel da arte como experiência contraditória do sensível. A experiência estética transforma e redesenha a partilha do sensível, a divisão que predetermina as formas de “ser em comum”. Mais do que criação subjetiva oposta a regras comuns, a arte diz respeito à produção de uma ideia de comunidade fundada no dissenso. Dividindo a partir do interior dete...

The modeling of fuel rod behaviour under RIA conditions in the code DYN3D

International Nuclear Information System (INIS)

Rohde, U.

1998-01-01

A description of the fuel rod behaviour and heat transfer model used in the code DYN3D for nuclear reactor core dynamic simulations is given. Besides the solution of heat conduction equations in fuel and cladding, the model comprises detailed description of heat transfer in the gas gap by conduction, radiation and fuel-cladding contact. The gas gap behaviour is modeled in a mechanistic way taking into account transient changes of the gas gap parameters based on given conditions for the initial state. Thermal, elastic and plastic deformations of fuel and cladding are taken into account within 1D approximation. Numerical studies concerning the fuel rod behaviour under RIA conditions in power reactors are reported. Fuel rod behaviour at high pressures and flow rates in power reactors is different from the behaviour under atmospheric pressure and stagnant flow conditions in the experiments. The mechanisms of fuel rod failure for fresh and burned fuel reported from the literature can be qualitatively reproduced by the DYN3D model. (author)

Espaços heterotópicos, imagens sobrepostas: encontros entre arte, loucura e memória

Directory of Open Access Journals (Sweden)

Tania Mara Galli Fonseca

Full Text Available O tema deste trabalho consiste no processo de catalogação das obras produzidas na oficina de Criatividade Nise da Silveira, freqüentada por internos do hospital Psiquiátrico São Pedro, situada em Porto alegre, Rio Grande do Sul. Durante os 17 anos de sua existência, essa oficina foi se instaurando como um lugar contra o esquecimento, onde temporalidades singulares puderam resistir, fazendo-se obra ao tempo sem duração que insiste em se instituir na cidade globalizada. o trabalho de catalogação vem se desenvolvendo como produção coletiva (extensionista que reúne a equipe do hospital e estudantes de diversas áreas, como artes, Psicologia e história (universidades pública e privada do RS. Foi identificada a existência de no mínimo quatro coleções significativas do ponto de vista do que se denomina Arte Reclusa ou Arte Bruta. Tais produções, que constituem um inestimável patrimônio imaterial, carecem, entretanto, de preservação e catalogação pertinentes para que venham a se constituir em reserva técnica para a pesquisa em diversos domínios, como os da saúde, educação e artes. a organização desse acervo, assim, acontece como inseparável de uma ética que vem buscar na obra o testemunho de subjetividades, tendo como matéria a afirmação da diferença em sua positividade.

Estudo evolutivo da anatomia das artérias coronárias em espécies de vertebrados com técnica de moldagem em acetato de vinil (vinilite

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RODRIGUES Tânia Maria de Andrade

1999-01-01

Full Text Available No presente trabalho foram produzidos 30 moldes anatômicos de corações de vertebrados, visando contribuir para o estudo das artérias coronárias direita e esquerda de diferentes espécies: peixes, anfíbios, répteis, aves e mamíferos. Os corações foram injetados com acetato de vinil, submetidos a corrosão e semicorrosão pelo ácido clorídrico, a fim de evidenciar o padrão anatômico apresentado pelas artérias coronárias no tocante à evolução das espécies e adaptações morfológicas (estrutura e arquitetura. Com base na morfologia das peças estudadas foram obtidas as seguintes conclusões: a técnica utilizando acetato de vinil, associada à corrosão, mostrou-se eficaz na produção de modelos de coração de diferentes espécies, apresentando detalhamento capaz de permitir visibilização dos ramos colaterais, quando existentes; o número de estruturas e a complexidade vascular cardíaca aumenta na medida em que os seres evoluem na escala zoológica. No réptil iguana iguana foi encontrado ventrículo duplo com tríplice via de saída, como único padrão evolutivo da anatomia dos ventrículos e grandes vasos da base ainda não descrito como cardiopatia congênita em humanos.

A condição expositiva e sua relação com o mercado de arte

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Emerson Dionísio Gomes de Oliveira

2017-10-01

Full Text Available O presente artigo busca posicionar uma história das exposições de arte frente a uma história do mercado de arte e suas instituições. Nessa perspectiva, optamos por construir um eixo entre exposições, mercados e museus. Eixo que seleciona pontos específicos de intersecção entre a história da arte e uma história das exposições. Por fim, apresentamos um problema para tal eixo, cuja premissa funda-se na criação, pelos artistas, de novos regimes expositivos, capazes de desdobrar a obra de arte em diferentes modalidades de visibilidade. Condição que exige uma história da arte que lide com a transitoriedade da obra, sua tradução, sua reapresentação em distintas formas de exibição. ABSTRACT The exhibition condition and its relationship with the art market. The present article seeks to position a history of the art exhibition in front of a history of the art Market and its institutions. From this perspective, we chose to build an axis between exhibitions, markets and museums. Axis that selects specific points of intersection between the history of art and a history of the exhibitions. Finally, we present a problem for such an axis, whose premise is based on the creation, by the artists, of new exhibition regimes, capable of unfolding the work of art in different modalities of visibility. A condition that requires a history of art that deals with the transitoriness of the work, its translation, its re-presentation in different forms of exhibition. KEYWORDS History of exhibitions; contemporary art; Art market; Art museums

Oclusão bilateral das artérias carótidas internas, sífilis meningovascular e SIDA: relato de caso

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LAMBRECHT FLORISBERTO

1999-01-01

Full Text Available Relatamos um caso de obstrução bilateral na origem das artérias carótidas internas, apresentando como sinais/sintomas associados hemiparesia e hipoestesia superficial e profunda à direita, associada a sífilis meningovascular em paciente com SIDA. Tomografia de crânio apresentou pequenas lesões hipodensas, com predomínio à esquerda, e arteriografia evidenciou oclusão bilateral das artérias carótidas. A associação entre lues e SIDA não é infrequente, porém o quadro oligossintomático do paciente, provavelmente devido a oclusão arterial lenta e gradual chama a atenção.

Effects of pellet shape on the fuel failure behavior under a RIA condition

International Nuclear Information System (INIS)

Hosokawa, Takanori; Hoshi, Tsutao; Yanagihara, Satoshi; Iwamura, Takamichi; Orita, Yoshihiko.

1980-10-01

The two types of fuel rods with different pellet shaped, i.e. flat pellets and dished pellets, were tested in the NSRR to investigate the effects of pellet shapes on the fuel failure behavior under an RIA condition and the results were compared with those of the chamfered pellet fuel rods which are used as the reference rod in the NSRR experiments. In addition, the deformation of pellets due to thermal expansion is calculated by using an FEM computer code. Through the above results, following conclusions are obtained. (1) In the experiments, insignificant differences on the cladding surface temperature responses and the appearance of post-irradiated rods are observed in each type of rods. (2) Evident differences on the deformation of fuel pellets have not appeared in the calculation. (3) In the RIA conditions, it is concluded that the fuel failure behavior and threshold energy might not be affected by pellet shape of which size is in the range of the current LWR's fuel rods. (author)

Trombose aguda de aneurisma de artéria femoral isolado: relato de caso Acute thrombosis of isolated femoral artery aneurysm: case report

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André Hideo Motoki

2008-12-01

Full Text Available Aneurismas de artéria femoral são raros, porém são o segundo tipo mais freqüente de aneurismas periféricos, sendo o aneurisma de artéria poplítea o mais comum. Normalmente, são de etiologia aterosclerótica. As complicações deste aneurisma são representadas por embolia, trombose e, mais raramente, a rotura. O objetivo deste trabalho é relatar um caso de um paciente com 59 anos, masculino, com queixa de dor súbita em membro inferior esquerdo associado à frialdade, palidez e ausência de pulsos. O ecocolordoppler evidenciou a presença de aneurisma trombosado da artéria femoral comum. O paciente foi submetido, com sucesso, à ressecção do aneurisma, com reconstrução do leito arterial.Common femoral artery aneurysms are rare; however, they are the second most frequent type of peripheral aneurysm, popliteal artery aneurysms being the most common. They usually have atherosclerotic ethiology. The complications of this aneurysm are thromboembolism and, more rarely, rupture. This article aimed at reporting the case of a 59-year-old male patient with complaint of sudden pain in his left leg associated with coldness, paleness and absence of pulses. Color Doppler ultrasound showed a thrombosed aneurysm of the common femoral artery. The patient was successfully submitted to aneurysm resection with reconstruction of the arterial bed.

State-of-the-art inventory

NARCIS (Netherlands)

Verhagen, H.J.; Van Gerven, K.A.J.; Akkerman, G.J.

2005-01-01

The present report provides a state-of-the-art inventory of relevant information and technical concepts for the ComCoast project, being the first phase of the research stages of Work Package 3 (WP3). This project was assigned to Royal Haskoning by CUR. The information scan was set-up in a systematic

Multimodal Dialogue Management - State of the art

NARCIS (Netherlands)

Bui Huu Trung, B.H.T.

This report is about the state of the art in dialogue management. We first introduce an overview of a multimodal dialogue system and its components. Second, four main approaches to dialogue management are described (finite-state and frame-based, information-state based and probabilistic, plan-based,

Greenhouse mechanization: State of the art and future perspective

NARCIS (Netherlands)

Henten, van E.

2006-01-01

This paper reviews the state of the art and future perspective of greenhouse mechanization. Driving forces for mechanization are identified. Dutch greenhouse crop production is used as an example. Analysis of a generic crop production process combined with a review of the state of the art in

Fuel cells: state of the art

International Nuclear Information System (INIS)

Campanari, S.; Casalegno, A.

2007-01-01

This paper deals with the main features at present state-of-the-art fuel cell and hybrid cycle technologies, discussing their actual performance, possible applications, market entry perspectives and potential development [it

Malignancies in HIV/AIDS patients attending an outpatient clinic in Vitória, State of Espírito Santo, Brazil

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Lauro Ferreira da Silva Pinto Neto

2012-12-01

Full Text Available INTRODUCTION: The present study investigated cancer prevalence and associated factors among HIV-infected individuals attending an AIDS outpatient clinic in Vitória, State of Espírito Santo, Brazil. METHODS: A sectional study was conducted among HIV infected adults attending an AIDS outpatient clinic in Vitória, State of Espírito Santo, Brazil. Demographic, epidemiological and clinical data were abstracted from medical records, including cancer diagnoses; nadir and current CD4 cell count, HIV viral load, time on antiretroviral treatment (ART, type of ART and smoking status. RESULTS: A total of 730 (91.3% patients were included in the study. Median age was 44.0 [interquartile range (IQR: 35-50.3] years; median time since HIV diagnosis was 5.5 years (IQR: 2-10; 60% were male; and 59% were white. Thirty (4.1% cases of cancer were identified of which 16 (53% were AIDS defining cancers and 14 (47% were non-AIDS defining malignancies. Patients diagnosed with cancer presented higher chance of being tobacco users [OR 2.2 (95% CI: 1.04-6.24]; having nadir CD4 ≤200 cells/mm³ [OR 3.0 (95% CI: 1.19-7.81] and higher lethality [OR 13,3 (95% CI: 4,57-38,72]. CONCLUSIONS: These results corroborate the importance of screening for and prevention of non-AIDS defining cancers focus in HIV-infected population, as these cancers presented with similar frequency as AIDS defining cancers.

Heteronomy in the arts field: state funding and British arts organizations.

Science.gov (United States)

Alexander, Victoria D

2018-03-01

For Bourdieu, the field of cultural production is comprised of an autonomous and a heteronomous sector. A heteronomous sector is one that is interpenetrated by the commercial field. I discuss an arena that, until recently, was part of the relatively autonomous sector in the field of cultural production - the supported arts sector in the United Kingdom - and argue that it became more heteronomous, due to the penetration by the state. Heteronomy due to the commercial field is present but secondary to, and driven by, the actions of the state. Political parties' attempts to diffuse and legitimate a particular economic ideology have led to state demands that arts institutions adopt neoliberal business practices in exchange for funding. Government giving to the arts, previously at arm's length, proved to be a Faustian bargain that demanded significant repayment in the form of lost autonomy. Coercive pressures from the state, enacted over time, show how the domination of one field over another can occur, even when the domination is resisted. © London School of Economics and Political Science 2017.

State of the art undersøgelse

DEFF Research Database (Denmark)

Nielsen, Nils

1998-01-01

Dette skrift omhandler nogle af de erfaringer der til dato er opnået i forbindelse med standby projektets udførelse. Hovedtemaet er en “State of the art undersøgelse” der omhandler standby-spændingsforsyninger, samt komponenter der kan anvendes til konstruktion af dem......Dette skrift omhandler nogle af de erfaringer der til dato er opnået i forbindelse med standby projektets udførelse. Hovedtemaet er en “State of the art undersøgelse” der omhandler standby-spændingsforsyninger, samt komponenter der kan anvendes til konstruktion af dem...

Where is your state of the art?

Science.gov (United States)

Ríos Gaona, Manuel

2015-04-01

Beyond the purposes of publishing, questioning and/or hypothesizing, every research has the noble aim to quench the constant human need of pushing farther away the boundaries of knowledge, may such frontier exist. The state of the art is the generic expression coined to limit the whereabouts of any particular knowledge. We use it just like a compass, it tells us how far we are, what has been done and where we should go. Take for instance quantum field theory, the state of the art in particle physics will tell you that everything that exists in this universe is made of bosons, quarks and leptons. What!?. Hold on, I was taught (and luckily maybe you weren't) that the fundamental particles were electrons, neutrons and protons, right?. Indeed, that is the state of the art but from almost one century ago. So, if I may ask... where is your state of the art? This is not about quantum physics; it is not even about hydrology; it is about everything. Today, everybody doing or not a PhD fiercely believes that their research is important, extremely unique, life changing (and help us God if we are wrong); but how can you be so sure that what you do, isn't already done?. We live in a modern world, cool environmental scientists now have tagged this era as the Anthropocene; globalization is everywhere and of course knowledge has not escaped to it. Not only knowledge is now global but is totally diversified, any crazy idea you can think of (or actually you can't) it is very likely that somebody already has his/hers hands on it. Nevertheless, this is a good thing, isn't it?. Well, that is the whole point. Every time I should write my research's state of the art, I always get overwhelmed because it actually is pretty difficult to establish, and later when I think I get it, it seems that I am solving issues that somebody already bothered to solve 30 years ago. Therefore, does it really have some purpose to be swimming in a huge pool of knowledge, not knowing where exactly I am? or

State of the Art in the Cramer Classification Scheme and ...

Science.gov (United States)

Slide presentation at the SOT FDA Colloquium on State of the Art in the Cramer Classification Scheme and Threshold of Toxicological Concern in College Park, MD. Slide presentation at the SOT FDA Colloquium on State of the Art in the Cramer Classification Scheme and Threshold of Toxicological Concern in College Park, MD.

Polipeptídeos farmacológicamente ativos e diâmetro de artérias piais: estudo experimental com vasopressina, ocitocina, bradicinina e neurocinina

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Sylvio Saraiva

1965-03-01

Full Text Available A ação de quatro polipeptídeos farmacológicamente ativos (vasopressina, ocitocina, bradicinina e neurocinina sôbre as artérias piais foi estudada em cães anestesiados com pentobarbital sódico e preparados para o registro da pressão arterial. Utilizou-se a técnica de Forbes 25, modificada por Me-laragno37 que permite a visibilização, a fotografia e a mensuração dos referidos vasos. Foram feitas 24 experiências, divididas em 5 grupos de animais: um grupo foi utilizado como contrôle e os outros quatro para o estudo de cada uma das drogas acima referidas, administradas por via venosa. Os resultados obtidos conduziram às seguintes conclusões: 1 a vasopressina não determina variação significativa no diâmetro das artérias da pia-máter, embora tenha provocado irregulares variações da pressão arterial; 2 a ocitocina causa intensa vasoconstrição pial, de curta duração, sem contudo modificar essencialmente a pressão arterial sistêmica; 3 a bradicinina aumenta o diâmetro das artérias da pia-máter, em paralelismo com um efeito hipotensor sistêmico; 4 a neurocinina promove dilatação das artérias da pia-máter, independentemente de eventual variação da pressão arterial sistêmica.

Além do eu: literatura, história e memória em Teresina etc., de Antonio Candido

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Ligia Chiappini

2003-04-01

Full Text Available Análise de Teresina etc., como exemplar de retratos escritos por Antonio Candido, que transcendem o particular e acabam fazendo o retrato de uma época, afirmando ideais éticos, políticos e estéticos e configurando, discretamente, não sem certo distanciamento irônico, um interessante auto-retrato. Memória e história, realidade e ficção, razão e sensibilidade, crítica e compreensão são elementos que se tecem com arte, num texto muito atual, pelo tema e pela metodologia.Teresina etc. as an example of the written portraits by Antonio Candido, that transcend the private and end up depicting an epoch, stating ethical, political and aesthetic ideals and configuring, discretely but not without a certain ironic distance, an interesting self-portrait. Memory and history, reality and fiction, sense and sensibility, critique and understanding woven with art.

Caso incomum de filariose linfática mediastinal com estenose da artéria pulmonar

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Moacir Boreli Tormes

1988-03-01

Full Text Available E descrito um caso incomum de filariose linfática, devido a Wuchereria Bancrofti, com localização dos vermes nos linfonodos e linfáticos do mediastino. A intensa reação do conjuntivo mediastinal, provavelmente desencadeada por macrofilárias mortas, determinou no paciente - de 9 anos, residente em Belém, Estado do Pará - estreitamento do tronco e dos ramos principais da artéria pulmonar, defeito tido, inicialmente, como de natureza congênita. O exame histopatológico de duas dentre várias formações nodulares encontradas no mediastino, durante o ato operatório,permitiu, no entanto, estabelecer-se a verdadeira causa da alteração exibida pelo paciente. O achado representa uma formà curiosa de infecção por W. bancrofti, completamente inesperada, quando se considera que a prevalência da bancroftose é, hoje, muito baixa na cidade de Belém. Segundo dados oficiais, o índice de microfilaremia atingiu, em 1985, nessa cidade, cerca de 0,1% apenas, enquanto que, há algumas décadas, era ele estimado em mais de 10%.

Guide to state-of-the-art electron devices

CERN Document Server

2013-01-01

Concise, high quality and comparative overview of state-of-the-art electron device development, manufacturing technologies and applications Guide to State-of-the-Art Electron Devices marks the 60th anniversary of the IEEE Electron Devices Committee and the 35th anniversary of the IEEE Electron Devices Society, as such it defines the state-of-the-art of electron devices, as well as future directions across the entire field. Spans full range of electron device types such as photovoltaic devices, semiconductor manufacturing and VLSI technology and circuits, covered by IEEE Electron and Devices Society Contributed by internationally respected members of the electron devices community A timely desk reference with fully-integrated colour and a unique lay-out with sidebars to highlight the key terms Discusses the historical developments and speculates on future trends to give a more rounded picture of the topics covered A valuable resource R&D managers; engineers in the semiconductor industry; applied scientists...

Avaliação da sensibilidade e especificidade dos exames não invasivos no diagnóstico da estenose de artéria renal

Directory of Open Access Journals (Sweden)

Flavio Antonio de Oliveira Borelli

2013-11-01

Full Text Available FUNDAMENTO: O envelhecimento e a aterosclerose estão relacionados à hipertensão renovascular em indivíduos idosos. Independentemente das comorbidades, a estenose de artéria renal é, por si só, importante causa de morbidade e mortalidade cardiovascular. OBJETIVO: Definir a sensibilidade, a especificidade, o valor preditivo positivo e o valor preditivo negativo dos exames não invasivos utilizados no diagnóstico de estenose da artéria renal. MÉTODOS: Um grupo de 61 pacientes recrutados permitiram a análise de 122 artérias e a definição de sensibilidade, especificidade e da contribuição relativa de cada exame realizado (Doppler, cintilografia e angiotomografia, comparados a arteriografia renal. RESULTADOS: A média das idades foi de 65,43 (desvio padrão: 8,7 anos. Das variáveis relacionadas à população do estudo e comparadas à arteriografia, duas estiveram correlacionadas à estenose da artéria renal, à disfunção renal e aos triglicerídeos. A mediana do ritmo de filtração glomerular foi de 52,8 mL/min/m². O Doppler identificou sensibilidade de 82,90%, especificidade de 70%, valor preditivo positivo de 85% e valor preditivo negativo de 66,70%. Para a tomografia, encontraram-se sensibilidade de 66,70%, especificidade de 80%, valor preditivo positivo de 87,50% e valor preditivo negativo de 55,20%. Esses achados permitiram identificar os exames que melhor detectavam a estenose. CONCLUSÃO: A tomografia e o Doppler mostraram qualidade e grande possibilidade no diagnóstico de estenose da artéria renal, com vantagem para o segundo, pois não há necessidade do uso de meio de contraste na avaliação de uma doença que, frequentemente, ocorre em diabéticos e associa-se à disfunção renal e à disfunção ventricular esquerda grave.

Interação entre as vias de sinalização de receptores serotoninérgicos e Β-adrenérgicos em artéria femoral de ratos

Directory of Open Access Journals (Sweden)

Maria Andréia Delbin

2012-01-01

Full Text Available FUNDAMENTO: A doença coronária tem sido amplamente estudada em pesquisas cardiovasculares. No entanto, pacientes com doença arterial periférica (DAP têm piores resultados em comparação àqueles com doença arterial coronariana. Portanto, os estudos farmacológicos com artéria femoral são altamente relevantes para a melhor compreensão das respostas clínicas e fisiopatológicas da DAP. OBJETIVO: Avaliar as propriedades farmacológicas dos agentes contráteis e relaxantes na artéria femoral de ratos. MÉTODOS: As curvas de resposta de concentração à fenilefrina contrátil (FC e à serotonina (5-HT e os agentes relaxantes isoproterenol (ISO e forskolina foram obtidos na artéria femoral de ratos isolada. Para as respostas ao relaxamento, os tecidos foram contraídos com FC ou 5-HT. RESULTADOS: A potência de classificação na artéria femoral foi de 5-HT > FC para as respostas contráteis. Em tecidos contraídos com 5-HT, as respostas de relaxamento ao isoproterenol foram praticamente abolidas em comparação aos tecidos contraídos com FC. A forskolina, um estimulante da adenilil ciclase, restaurou parcialmente a resposta de relaxamento ao ISO em tecidos contraídos com 5-HT. CONCLUSÃO: Ocorre uma interação entre as vias de sinalização dos receptores β-adrenérgicos e serotoninérgicos na artéria femoral. Além disso, esta pesquisa fornece um novo modelo para estudar as vias de sinalização serotoninérgicas em condições normais e patológicas que podem ajudar a compreender os resultados clínicos na DAP.

The state-of-the-art of ART sealants.

Science.gov (United States)

Frencken, Jo E

2014-03-01

Sealing caries-prone pits and fissure systems is an effective caries-preventive measure. There are basically two types of sealant materials: glass-ionomer and resin-based materials. Low- and medium-viscosity glass-ionomers were initially used and showed a low level of retention. With the advent of the ART approach in the mid-nineties, high-viscosity glass-ionomers were introduced as sealant material and the retention rate of ART sealants increased substantially. As the effectiveness of a sealant is measured by its capacity to prevent (dentine) carious lesion development, sealant retention is considered a surrogate endpoint. The ART sealant protocol is described. Systematic reviews and meta-analysis covering low- medium- and high-viscosity glass-ionomer (ART) sealants have concluded that there is no evidence that either glass-ionomer or resin-based sealants prevent dentine carious lesions better. The annual dentine carious lesion development in teeth with high-viscosity glass-ionomer ART sealants over the first three years is 1%. These ART sealants have a high capacity of preventing carious lesion development. Because no electricity and running water is required, ART sealants can be placed both inside and outside the dental surgery. High-viscosity glass-ionomer ART sealants can be used alongside resin-based sealants.41:119-124

State of the art in video system performance

Science.gov (United States)

Lewis, Michael J.

1990-01-01

The closed circuit television (CCTV) system that is onboard the Space Shuttle has the following capabilities: camera, video signal switching and routing unit (VSU); and Space Shuttle video tape recorder. However, this system is inadequate for use with many experiments that require video imaging. In order to assess the state-of-the-art in video technology and data storage systems, a survey was conducted of the High Resolution, High Frame Rate Video Technology (HHVT) products. The performance of the state-of-the-art solid state cameras and image sensors, video recording systems, data transmission devices, and data storage systems versus users' requirements are shown graphically.

The state-of-the-art of ART restorations.

Science.gov (United States)

Frencken, Jo E

2014-04-01

ART is less anxiety- and pain-provoking than traditional restorative treatments; administration of local anaesthesia is rarely required. Systematic reviews have provided evidence of the high level of effectiveness of high-viscosity glass-ionomer ART restoration in restoring single-surface cavities, both in primary and permanent posterior teeth, but its survival rates in restoring multiple-surface cavities in primary posterior teeth needs to be improved. Insufficient information is available regarding the survival rates of multiple-surface ART restorations in permanent teeth. Evidence from these reviews indicates no difference in the survival rates of single-surface high-viscosity glass-ionomer ART restorations and amalgam restorations in primary and permanent posterior teeth. Where indicated, high-viscosity glass-ionomer ART restorations can be used alongside traditional restorations. ART provides a much more acceptable introduction to dental restorative care than the traditional 'injection, drill and fill'.

As contribuições de Jacob Burckhardt ao Manual de História da Arte de Franz Kugler (1848

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Cássio da Silva Fernandes

2005-01-01

Full Text Available Entre junho e setembro de 1847, o historiador suíço Jacob Burckhardt (1818-1897 trabalhou em Berlim como assistente de seu ex-professor, Franz Kugler (1808-1858, na segunda edição, revista e ampliada, do Handbuch der Kunstgeschichte de 1848. Esta obra era parte do amplo estudo histórico-artístico, iniciado por Kugler na década de 1830, que simbolizou o nascimento da moderna história universal da arte em língua alemã. No que se refere a Burckhardt, a participação no Manual de História da Arte deixou transparecer elementos de sua futura descoberta historiográfica: a Renascença italiana. Buscaremos, nas infinitas linhas da segunda edição do manual de Kugler, os traços da pena de Burckhardt, onde cintilam dois componentes:de um lado, a arte como expressão fundamental para o entendimento histórico; de outro, a passagem que conduz da Idade Média ao Renascimento e o papel da Itália nessa transformação.Between June and September of 1847, Swiss historian Jacob Burckhardt (1818-1897 worked in Berlin as an assistant tom his former professor, Franz Kugler (1808-1858, in the second edition, revised and amplified, of Handbuch der Kunstgeschichte of 1848. This work was part of a broad historic-artistic study, started by Kugler in the 1830s.This study symbolized the birth of the modern universal art history in the German language. Related to Burckhardt, the participation in the History of Art Manual let elements of his future historiographical discovery appear: the Italian Renascence. We will try to get, therefore, in the infinite lines of the second edition of Kugler's manual, the traces of Burckhardt's words. In such traces, two components scintillate: on one side, the art as fundamental expression for the historical understanding; on the other, the passage that leads from Middle Age to Renascence and Italy's role in this transformation.

One Step Closer to the Marketplace for State-of-the-Art Wind Turbine

Science.gov (United States)

Drivetrain | News | NREL One Step Closer to the Marketplace for State-of-the-Art Wind Turbine Drivetrain One Step Closer to the Marketplace for State-of-the-Art Wind Turbine Drivetrain April 1, 2016 modeling, and testing in state-of-the-art facilities designed to put the drivetrain through its paces

Dez anos de experiência com artéria torácica interna direita através do seio transverso na revascularização da artéria circunflexa e seus ramos Ten years of experience with the right thoracic internal artery through transversus sinus in the left circunflex artery and his branches

Directory of Open Access Journals (Sweden)

Luís Roberto Gerola

1993-12-01

angioplastia, 7 apresentaram infarto do miocárdio não fatal e 1 paciente foi reoperado por oclusão das duas artérias torácicas internas. Foram realizados 69 cateterismos pós-operatórios, sendo 38 imediatos e 31 tardios, num período que variou de 3 a 120 meses (média de 51,6 meses. No período pós-operatório imediato, ATIE estava pérvia em 37 casos (97% e a ATID em 36 (95%. No reestudo tardio, a ATIE estava pérvia em 30 pacientes (97% e a ATID em 29 (92,7%. A análise atuarial mostrou que a percentagem de casos que apresentavam a ATIE pérvia foi de 97,6% em 1 ano e de 93,8% aos 5-10 anos de seguimento, enquanto que a incidência de casos em que a ATID estava pérvia foi de 92,1% em 1 ano e de 84,1% em 5 e 10 anos. Os resultados apresentados mostram que a revascularização de ramos da artéria coronária esquerda com as ATI E e ATI D proporciona aos pacientes uma boa evolução tardia, em decorrência da baixa incidência de eventos cardíacos durante o período estudado. A alta incidência de enxertos pérvios em 10 anos, com a utilização da ATID posicionada através do seio transverso, sugere que esta opção técnica deve ser sempre lembrada na revascularização da artéria circunflexa e seus ramos.From April 1983 to November 1993,185 patients were submitted to myocardial revascularization using bilateral thoracic internal artery. The left internal thoracic artery was used to left anterior descending artery and the right internal thoracic artery was used through transversus sinus to circunflex artery and his branches. We performed 38 angiographic studies during the late follow-up and demonstrated that the right internal thoracic artery was patent in 29 patients (92.7% and the left internal thoracic artery in 30 (97%. We conclude that myocardial revascularyzation should be performed using bilateral internal thoracic artery routinely.

Abordagem supraclavicular da artéria subclávia direita para estabelecimento de circulação extracorpórea nas doenças da aorta

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FABRI Hélio Antônio

2002-01-01

Full Text Available OBJETIVO: Estabelecer a circulação extracorpórea através de canulação da artéria subclávia direita por meio de incisão supraclavicular. MÉTODO: Foram estudados, no período de outubro de 2001 a março de 2002, quatro pacientes com diagnóstico de dissecção aguda de aorta tipo A de Stanford, sendo realizada em todos os casos canulação da artéria subclávia direita por via supraclavicular e realização de perfusão cerebral anterógrada durante o período de parada circulatória total. RESULTADOS: A artéria subclávia direita foi canulada diretamente e não houve nenhuma complicação neurovascular relacionada ao procedimento. A circulação extracorpórea foi mantida com fluxo adequado durante toda a operação. Houve 1 óbito hospitalar, não relacionado ao procedimento. DISCUSSÃO: Um dos passos mais importantes na melhora dos resultados operatórios é a perfusão sistêmica anterógrada, realizada através do sistema arterial e a subclávia para isso permite a perfusão da luz verdadeira. A abordagem supraclavicular nos proporciona um campo operatório adequado e facilidade para a realização da perfusão cerebral anterógrada que também é importante neste arsenal para uma redução da mortalidade operatória. CONCLUSÃO: A incisão supraclavicular nos proporciona um acesso factível com boa exposição da artéria subclávia direita em uma região em que ela apresenta um bom calibre e com poucas estruturas adjacentes que poderiam ser lesadas. Além disso, possibilita a canulação de forma direta e com boa posição da cânula arterial.

The State of Comic Art Bibliography in North America

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Michael Rhode

2010-08-01

Full Text Available Within the past two decades, several American bibliographies of comic art have been published to aid in research on comics and cartooning. Professor John Lent’s ten-volume Comic Art Bibliographies is one of the largest such projects and he began it with a self-published volume in 1986. Librarian Randy Scott published The Comic Art Collection Catalog: An Author, Artist, Title and Subject Catalog Of The Comic Art Collection, Special Collections Division, Michigan State University Libraries, whi...

State of the art in microfabrication

NARCIS (Netherlands)

Schmitz, Jurriaan

2014-01-01

In this review paper the state of the art in microfabrication is presented. The focus is on trends in integrated circuit fabrication by mainstream industrial players. The article starts with Moore’s Law, describing its inception as well as the evolution of Moore’s metric of the number of components

Aneurisma verdadeiro bilateral de artéria tibial posterior True bilateral aneurysm of the posterior tibial artery

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Silvio Romero de Barros Marques

2006-03-01

Full Text Available Neste artigo, faz-se o relato de um caso de aneurisma verdadeiro bilateral da artéria tibial posterior em paciente de 57 anos. Os aneurismas surgiram em épocas diferentes. Os aspectos clínicos, diagnósticos e terapêuticos deste caso são discutidos. Este relato é importante, pois os autores não têm conhecimento de caso semelhante na literatura consultada.This article reports a case of true bilateral aneurysm of the tibial posterior artery in a 57 year-old patient. The aneurysms occurred at different times. The clinical, diagnostic and therapeutic aspects of this case are discussed. This report is important because the authors did not find a similar description in the literature.

Estudo anatômico da artéria torácica interna aplicado à cirurgia cardiovascular

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Jorge A HENRIQUEZ-PINO

1997-01-01

Full Text Available Com a intensa utilização da artéria torácica interna (ATI na operação de revascularização do miocárdio, estudamos sua anatomia com a finalidade de esclarecer aspectos morfológicos que possibilitem extender sua utilização e prevenir complicações pós-operatórias. Em 100 cadáveres foram retirados os plastrões esternocostais e injetadas as ATIs com Látex Neoprene. A ATI originou-se diretamente da artéria subclávica em 82,5% e de um tronco comum com outras artérias em 17,5%. O comprimento médio foi de 20,4 ± 2,1 cm e o ponto de terminação mais freqüente foi ao nível do 6º espaço intercostal (e.i. (52,5%. A forma de terminação se fez como bifurcação em 93% e como trifurcação em 7%. A relação da ATI com a margem esternal foi de 10,3 ± 3,2 mm ao nível do 1º e.i. e 19,2 ± 6,0 mm ao nível do 6º e.i. A ATI está recoberta pelo músculo transverso do tórax numa extensão média de 7,5 ± 2,7 cm e apresenta o ramo costal lateral em 15%. O nervo frênico é anterior à ATI em 70% e posterior em 30%. O estudo forneceu subsídios que podem contribuir para minimizar as complicações pós-operatórias.The internal thoracic artery (ITA was studied because of its increased utilization in myocardial revascularization surgery due to the excellent long-term results. A review of its anatomical characteristics to clear some morphological aspects was made, aiming to help the extension of its utilization and prevent operative complications. The study was carried out in 100 cadavers; the anterior sternocostal wall of the thorax was removed and the arteries were injected with Neoprene Latex. The ITA originated directly from the subclavian artery in 82.5% and from a common trunk with other arteries in 17.5%. Its lenght was 20.4 ± 2.1 cm in average and the most frequent end point was the 6th intercostal space (52.5%. The end point form was as bifurcation in 93% and as trifurcation in 7%. The relation of ITA with the sternal

Middle cerebral artery revascularization: anatomical studies and considerations on the anastomosis site Revascularização da artéria cerebral média: estudo anatômico e considerações sobre o local de sutura

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Murilo S. Meneses

1997-01-01

Full Text Available In the surgical management of skull base lesions and vascular diseases such as giant aneurysms, involvement of the internal carotid artery may require the resection or the occlusion of the vessel. The anastomosis of the external carotid artery and the middle cerebral artery with venous graft may be indicated to re-establish the blood flow. To determine the best suture site in the middle cerebral artery, an anatomical study was carried out. Fourteen cerebral hemispheres were analysed after the injection of red latex into the internal carotid artery. The superior and inferior trunk of the main division of the middle cerebral artery have more than 2 mm of diameter. They are superficial allowing an anastomosis using a venous graft. The superior trunk has a disadvantage, it gives rise to branches for the precentral and post-central giri. The anastomosis with the inferior trunk presents lower risk of neurological deficit even though the angular artery originates from it.No tratamento cirúrgico das lesões da base do crânio e patologias vasculares como aneurismas gigantes, a ressecção ou oclusão da artéria carótida interna pode ser necessária. A anastomose das artérias carótida externa e cerebral média com interposição de enxerto venoso pode ser utilizada para restabelecer o fluxo sangüíneo. Para determinar o melhor local de sutura na artéria cerebral média, realizou-se um estudo anatômico. Quatorze hemisférios cerebrais foram analisados depois da injeção de látex vermelho na artéria carótida interna. Os ramos superior e inferior da divisão principal da artéria cerebral média têm mais de 2 mm de diâmetro. Eles são superficiais e permitem uma anastomose utilizando um enxerto venoso. O tronco superior tem a desvantagem de dar origem aos ramos para os giros pré e pós-centrais. A anastomose com o tronca inferior apresenta menor risco de déficit neurológico, apesar da artéria angular ter origem desse vaso.

State-of-the-art of home networking

NARCIS (Netherlands)

Koonen, A.M.J.; Popov, M.

2012-01-01

To introduce the Symposium on "Indoor Optical Networks: a Promising Way to a Converged Service Delivery", this presentation will give a brief overview of state-of-the-art home networking architectures, technologies and applications covering both technical and techno-economic aspects.

New simulators from old - achieving state-of-the-art simulation without state-of-the-art costs

International Nuclear Information System (INIS)

Heilmeier, H.J.; Rosser, R.M.; Fyffe, K.L.; Gaerttner, G.F.; Chulick, E.T.

1990-01-01

Achieving a state-of-the-art simulator for operator training requires neither the expensive remodeling of old simulators nor the acquisition of very expensive new machines. In this paper the authors present two distinct cases where older training simulators have been upgraded to meet training requirements with a minimum of inexpensive hardware additions, including plug-in/-out panels, and software changes

14 CFR 1203.403 - State-of-the-art and intelligence.

Science.gov (United States)

2010-01-01

... 14 Aeronautics and Space 5 2010-01-01 2010-01-01 false State-of-the-art and intelligence. 1203.403... PROGRAM Guides for Original Classification § 1203.403 State-of-the-art and intelligence. A logical... available from intelligence sources is known or is available to others. It is also important to consider...

How the United States Funds the Arts. Third Edition

Science.gov (United States)

National Endowment for the Arts, 2012

2012-01-01

The infrastructure for arts and cultural support in the United States is complex and adaptive. Citizens who enjoy the arts can choose from a wide array of drama, visual and media arts, dance, music, and literature available in formal and informal settings--theaters, museums, and concert halls, but also libraries, schools, places of worship,…

Platelet kinetics: the state of the art

International Nuclear Information System (INIS)

Heyns, A. duP

1984-01-01

In this paper an overview of the state of the art of platelet kinetics 1982 is presented. The subjects considered include a discussion of the advantages and disadvantages of some of the many radionuclide platelet labels, viz 51 Cr, 111 In, focussing briefly on models for analysis of platelets survival. (Auth.)

Entrepreneurship Education: State of the Art

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José Carlos Sánchez García

2017-10-01

Full Text Available Job uncertainty and ambiguity is a reality in many current societies, therefore, the idea of self-employment has taken a more active role, not only out of necessity, but also because it brings innovation and development to societies. In view of this situation, the following question arises: how can we strengthen the entrepreneurial spirit of our students? This article has the objective to collect theoretical information of the state of the art on entrepreneurship education: what it has been, what it is, and what can it be, in order to present the current condition of the topic, both in the psychological and pedagogical field. To achieve this objective, information from 108 research sources, mainly from scientific articles and books was collected, concluding that, although generally, entrepreneurship education has significantly contributed to the creation of businesses, developing countries, specifically, those in Latin America, still require extra effort to fully implement entrepreneurship topic in the curriculums, particularly because of challenges such as political instability, technology and international competition.

State-of-the-art in Heterogeneous Computing

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Andre R. Brodtkorb

2010-01-01

Full Text Available Node level heterogeneous architectures have become attractive during the last decade for several reasons: compared to traditional symmetric CPUs, they offer high peak performance and are energy and/or cost efficient. With the increase of fine-grained parallelism in high-performance computing, as well as the introduction of parallelism in workstations, there is an acute need for a good overview and understanding of these architectures. We give an overview of the state-of-the-art in heterogeneous computing, focusing on three commonly found architectures: the Cell Broadband Engine Architecture, graphics processing units (GPUs, and field programmable gate arrays (FPGAs. We present a review of hardware, available software tools, and an overview of state-of-the-art techniques and algorithms. Furthermore, we present a qualitative and quantitative comparison of the architectures, and give our view on the future of heterogeneous computing.

The Arts and State Governments: At Arm's Length or Arm in Arm?

Science.gov (United States)

Lowell, Julia F.; Ondaatje, Elizabeth Heneghan

2006-01-01

Even though a majority of Americans claim to support public funding of the arts, state government spending on the arts is minimal--and may be losing ground relative to other types of state expenditures. Moreover, most state arts agencies, or SAAs, have not succeeded in convincing state government leaders that the arts should be integral to their…

Artéria e veia lienais de bovinos da raça Nelore

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Roberto Carvalhal

2001-01-01

Full Text Available A artéria lienal mostra dois comportamentos antes de penetrar no hilo do baço, compondo o Grupo I (90% com um ramo extra-hilar e o Grupo II (10% com 2 destes ramos. Após penetrar, origina em média 13 ramos para a margem cranial e 10 para a margem caudal. A veia lienal freqüentemente (96,6% está representada por um único vaso de trajeto longitudinal no eixo dorsoventral, para onde confluem em média 13 vasos da margem cranial e 11 da margem caudal, e raramente (3,3% esta veia resulta da confluência de 2 vasos de calibres equivalentes.

77 FR 5281 - State-of-the-Art Reactor Consequence Analyses Reports

Science.gov (United States)

2012-02-02

... NUCLEAR REGULATORY COMMISSION [Docket ID: NRC-2012-0022] State-of-the-Art Reactor Consequence... release of Draft NUREG-1935, ``State-of-the-Art Reactor Consequence Analyses (SOARCA) Report,'' for public... offsite radiological health consequences for potential severe reactor accidents for the Peach Bottom...

Ética: a aprendizagem da arte de viver Ethics: learning the art of living

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Nadja Hermann

2008-04-01

Full Text Available O trabalho discute, numa abordagem filosófica, a formação ética, a partir das possibilidades da arte de viver. Explicita que a arte de viver tem uma dimensão estética em que própria obra da vida tem a arte como modelo, por meio da criação de diferentes estratégias (desde as interativas até as literárias, articuladas com princípios universais. Esta ética, com seu apelo às condições concretas da vida e aos sentimentos, não exclui o reconhecimento de uma normatividade que ultrapassa as regras criadas pelo próprio sujeito, ou seja, universalidade e particularidade não se excluem. O texto apresenta (1 a contribuição helenística para a arte de viver, por meio do modelo terapêutico de filosofar, e (2 o papel das emoções e da phronesis na articulação entre o universal e o particular, para apontar que (3 uma educação ético-estética se constitui pelo reconhecimento da tensão entre o eu singular e o nós (ethos comum.With a philosophical approach, this work provides a discussion about ethical education from the possibilities of the art of living. It states that the art of living has an aesthetic dimension which is used by life itself as a model, with the creation of different strategies (from interactive to literary related to universal principles. With its appeal to feelings and to life's concrete conditions, this ethics does not exclude the recognition of a norm that excels the rules created by a subject; that is, universality and particularity do not exclude each other. The text presents (1 the Hellenic contribution to the art of living, through the therapeutic philosophizing model and (2 the role of emotions and phronesis in the relation between the universal and private domains to indicate that (3 an ethical-aesthetic kind of education is constituted by the recognition of tension between the singular I and (the common ethos we.

State Arts Policy: Trends and Future Prospects

Science.gov (United States)

Lowell, Julia F.

2008-01-01

State arts agencies (SAAs)--key players within the U.S. system of public support for the arts--face growing economic, political, and demographic challenges to the roles and missions they adopted when founded in the mid-1960s. This report, the fourth and final in a multiyear study, looks at state arts agencies' efforts to rethink their roles and…

State of the art of UO2 fuel fabrication processes

International Nuclear Information System (INIS)

Henke, M.; Klemm, U.

1980-01-01

Starting from the need of UO 2 for thermal power reactors in the period from 1980 to 1990 and the role of UF 6 conversion into UO 2 within the fuel cycle, the state-of-the-art of the three established industrial processes - ADU process, AUC process, IDR process - is assessed. The number of process stages and requirements on process management are discussed. In particular, the properties of the fabricated UO 2 powders, their influence on the following pellet production and on operational behaviour of the fuel elements under reactor conditions are described. Hence, an evaluation of the three essential conversion processes is derived. (author)

MEMENTO MORI: PRÁTICAS FUNERÁRIAS E ARTE SACRA NA CULTURA BARROCA

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Claúdio Monteiro Duarte

2015-05-01

Full Text Available RESUMO: Este artigo aborda algumas atitudes diante da morte na cultura ocidental entre os séculos XVI e XIX, período marcado pela dúvida e pela inquietação, e ao mesmo tempo pelo impulso lúdico e pela teatralização da vida. Procurou-se salientar como a concepção dominante da morte pode ser percebida de formas semelhantes em cerimônias fúnebres, autos-de-fé e realizações artístico-religiosas, mostrando como as técnicas de preparação para a morte eram importantes numa sociedade dividida entre a fé e a razão, entre a religião e a ciência nascente.   PALAVRAS-CHAVE: cultura funerária, arte barroca, representações da morte   ABSTRACT: This article discusses the attitudes about death in the Western culture, between the 16th and 19th centuries, a period characterized by the so called baroque culture, whose main features were the doubt and the anxiety, and, at the same time, a ludic impulse and a theatrical vision of life. It emphasizes how the dominant conceptions about death may be found in the funerary habits, the public executions and punishments and the sacred artistic achievements alike, which demonstrates how the techniques of preparation to death were important in that society, divided between faith and reason, between religion and the beginnings of science.  KEYWORDS: funerary culture, baroque art, representations of deathRecebido em: 09/02/2015 – Aceito em 31/03/2015

The State of the Art in Cold Forging Lubrication

DEFF Research Database (Denmark)

Bay, Niels

1994-01-01

The manufature of components in steel, aluminium and copper alloys by cold forging production has increased ever since the 1950's. Typical processes are forward rod extrusion and backward can extrusion, upsetting, ironing, tube extrusion and radial extrusion. The tribological conditions in cold...... forging are extremely severe due to large surface expansion and normal pressure in the tool/workpiece interface combined with elevated tool temperatures. Except for the more simple cold forging operations successful production therefore requires advanced lubrication systems. The present paper gives...... a detailed description of the state of art for lubricant systems for cold forging of C-steels and low alloy steels as well as aluminium alloys including all the basic operations such as cleaning of the slugs, application of eventual conversion coating and lubrication. As regards cold forging of steel...

Nanomedicine applications in women's health: state of the art.

Science.gov (United States)

Lloyd-Parry, Oliver; Downing, Charlotte; Aleisaei, Eisa; Jones, Celine; Coward, Kevin

2018-01-01

State-of-the-art applications of nanomedicine have the potential to revolutionize the diagnosis, prevention, and treatment of a range of conditions and diseases affecting women's health. In this review, we provide a synopsis of potential applications of nanomedicine in some of the most dominant fields of women's health: mental health, sexual health, reproductive medicine, oncology, menopause-related conditions and dementia. We explore published studies arising from in vitro and in vivo experiments, and clinical trials where available, to reveal novel and highly promising therapeutic applications of nanomedicine in these fields. For the first time, we summarize the growing body of evidence relating to the use of nanomaterials as experimental tools for the detection, prevention, and treatment of significant diseases and conditions across the life course of a cisgender woman, from puberty to menopause; revealing the far-reaching and desirable theoretical impact of nanomedicine across different medical disciplines. We also present an overview of potential concerns regarding the therapeutic applications of nanomedicine and the factors currently restricting the growth of applied nanomedicine.

Ascertaining the international state of the art of PSA methodology

International Nuclear Information System (INIS)

Linden, J. von

1998-01-01

Plant-specific PSAs, to be performed within the framework of the Periodic Safety Review of German Nuclear Power Plants require further development of the methodology. For that purpose foreign PSA-guidelines and PSA-reviewes as well as relevant literature are examined and appropriate insights are adopted within task A.2 of project SR 2096. The main goal of these activities is to achieve a comparison of the state of the art of PSA-methodologies applied abroad and in Germany. The German state of the art refers to the extent as is documented in the German PSA Guide (Leitfaden Probabilistische Sicherheitsanalyse /PSUe97/) which has to be used for the Periodic Safety Review of German Nuclear Power Plants. The structure for the evaluation is based on the working steps of a PSA. In total, according to the objectives of the Periodic Safety Review the German approach for plant-specific PSAs based on the German PSA Guide is conform to the state of the art abroad. Identified deviations in some details are evaluated reflecting the view of GRS. Particular aspects resulting from the evaluation should be considered for further development of the German PSA Guide. (orig.) [de

State of the art magnetic resonance imaging

International Nuclear Information System (INIS)

Weissman, J.D.

1987-01-01

In less than a decade Magnetic Resonance Imaging (MRI) has evolved from a laboratory demonstration to a safe and effective technique for clinical diagnosis. This evolutionary process continues. At this time 2-D and 3-D imaging of the head and body is firmly established in clinical use. Surface coil imaging, two-component chemical shift imaging, in-vivo spectroscopy and flow imaging are currently in various stages of development. The present state of the art of MRI is a function of an array of technologies: magnet, Rf coil, Rf pulse amplifier, gradient coil and driver, pulse programmer, A/D converter, computer system architecture, array processors and mass storage (both magnetic and optical). The overall product design is the result of a complex process which balances the advantages and disadvantages of each component for optimal system performance and flexibility. The author discusses the organization of a state-of-the-art MRI system. Several examples of the kinds of system interactions affecting design choices are given. (Auth.)

The "State of Art" of Organisational Blogging

Science.gov (United States)

Baxter, Gavin J.; Connolly, Thomas M.

2013-01-01

Purpose: The aim of this paper is to provide an overview of the "state of art" of organisational blogging. It also aims to provide a critical review of the literature on organisational blogging and propose recommendations on how to advance the subject area in terms of academic research. Design/methodology/approach: A systematic literature review…

Contemporary Romanian Art in the United States1

Directory of Open Access Journals (Sweden)

Altman Dana

2014-08-01

Full Text Available The article discusses the recent international interest in contemporary Romanian art and its growth in market share, with a focus on the United States. The theme is followed thorough in numerous museum exhibitions, increased collector following, art fair presence, gallery representation and auction activity initially in Europe and the United States. The phenomenon is discussed both in the context of the larger international movement conducive to the contemporary art price bubble, and in that of the local socio-economic changes. My chief interest lies in the factors leading up to the entry of post 1989 Romanian art in the global arena as a manifestation of market forces in the field. The analysis follows its grass roots local emergence through non-profit institutions, individual artists, small publications, low budget galleries, as well as the lack of contribution (with few notable exceptions of state institutions, while pointing out the national context of increasing deregulation of social support systems resulting in lack of focus on cultural manifestations. The conclusion is that the recent ascent of contemporary Romanian art (and coincidentally, the award winning contemporary Romanian cinematography is a fortuitous convergence of various factors, among which, increased international mobility and sharing. At the same time, it is also the result of the evolution of various individual artists that pursued a form of art rooted in Romanian artistic tradition but with a focus on the symbolic figurative. The result is a personal semiotics of raising the mundane to extraordinary levels that reconfigured the anxiety of entering a new system into an unmistakable and lasting visual language.

Big-hole drilling - the state of the art

International Nuclear Information System (INIS)

Lackey, M.D.

1983-01-01

The art of big-hole drilling has been in a continual state of evolution at the Nevada Test Site since the start of underground testing in 1961. Emplacement holes for nuclear devices are still being drilled by the rotary-drilling process, but almost all the hardware and systems have undergone many changes during the intervening years. The current design of bits, cutters, and other big-hole-drilling hardware results from contributions of manufacturers and Test Site personnel. The dual-string, air-lift, reverse-circulation system was developed at the Test Site. Necessity was really the Mother of this invention, but this circulation system is worthy of consideration under almost any condition. Drill rigs for big-hole drilling are usually adaptations of large oil-well drill rigs with minor modifications required to handle the big bits and drilling assemblies. Steel remains the favorite shaft lining material, but a lot of thought is being given to concrete linings, especially precast concrete

Fantasia? Lusitana? Cinema, História(s de vida e ética artística em Daniel Blaufuks e João Canijo

Directory of Open Access Journals (Sweden)

Ana Salgueiro Rodrigues

2010-12-01

Full Text Available Focusing our attention on the inter-arts project Sob céus estranhos. Uma história de exílios, by Daniel Blaufuks, and the film Fantasia lusitana, by João Canijo, we will try to demonstrate, trough a revisitation of a variety of representation (public and private, artistic and documents that both Daniel Blaufuks and João Canijo, question the truth of the History and aesthetics, the deontology and the (possible truth of contemporary art.

Mission Accomplished: Working with State Arts Agencies

Science.gov (United States)

Boyer, Johanna Misey

2005-01-01

Most everyone involved professionally in the non-profit arts comes in contact with a state arts agency. A person may be on the Teaching Artist roster, works for a grantee organization, or has directly received a grant or fellowship. The work that one does in the school is probably funded by the state arts agency. Or, at a more basic level, the…

Leituras de operárias

Directory of Open Access Journals (Sweden)

Betty Mindlin

2008-03-01

Full Text Available Defensora de causas sociais, paladina poética contra injustiças e desigualdade, Ecléa Bosi em seu livro Cultura Popular e Cultura de Massa: Leituras de Operárias, pesquisa as leituras de cerca de 50 operárias, procurando ver que acesso têm ao imaginário, aos livros, quais as suas condições de vida, como a sociedade industrial as privam da criação artística e literária, apesar de sua sede de conhecimento e de expressão.

Avaliação da espessura do complexo médio-intimal da artéria carótida como marcador de aterogênese acelerada secundária a dano vascular na esclerose sistêmica progressiva

Directory of Open Access Journals (Sweden)

Rodrigo Macedo

Full Text Available OBJETIVO: Avaliar a espessura da camada médio-intimal da artéria carótida comum em pacientes com e sem esclerodermia e verificar possível associação com sua gravidade. MÉTODOS: Em estudo caso-controle, foram selecionados 30 pacientes com esclerodermia e 30 sem a doença e pareados de acordo com a idade, sexo, hipertensão arterial sistêmica, diabete melito e hipercolesterolemia. Todos os pacientes foram submetidos à avaliação das artérias carótidas pela ultrassonografia vascular de alta resolução e realizada a medida do espessamento da camada médio-intimal das carótidas comuns a 2cm da bifurcação carotídea. Em toda a análise foi considerado o maior valor da camada médio-intimal nas artérias carótidas direita e esquerda. RESULTADOS: A amostra foi composta de 30 pacientes estudados, sendo 29 (96,67% mulheres e um homem (3,3% com idade de 17 a 79 anos (média de 48 anos. Nesta amostra existiam 11/30 (36,67% com hipertensão arterial, 5/30 (16,67% com diabete melito, 6/30 (20% com dislipidemia e 2/30 (6,67% fumantes. Ao comparar a medida do maior risco (espessura máxima entre o lado esquerdo e o lado direito, obteve-se média de 0,77mm para o grupo esclerodermia e valor de 0,70mm para o grupo controle (p=0,212. Ao avaliar a associação entre gravidade da doença e a camada médio-intimal da carótida, não se encontrou associação significativa (p=0,925. CONCLUSÃO: Encontra-se discreto aumento do espessamento da camada médio-intimal da artéria carótida comum em pacientes com esclerodermia, mas sem significância estatística. Com relação à gravidade da doença e o espessamento da camada médio-intimal da carótida comum, não foi verificada diferença.

Fatigue of Nitinol: The state-of-the-art and ongoing challenges.

Science.gov (United States)

Mahtabi, M J; Shamsaei, Nima; Mitchell, M R

2015-10-01

Nitinol, a nearly equiatomic alloy of nickel and titanium, has been considered for a wide range of applications including medical and dental devices and implants as well as aerospace and automotive components and structures. The realistic loading condition in many of these applications is cyclic; therefore, fatigue is often the main failure mode for such components and structures. The fatigue behavior of Nitinol involves many more complexities compared with traditional metal alloys arising from its uniqueness in material properties such as superelasticity and shape memory effects. In this paper, a review of the present state-of-the-art on the fatigue behavior of superelastic Nitinol is presented. Various aspects of fatigue of Nitinol are discussed and microstructural effects are explained. Effects of material preparation and testing conditions are also reviewed. Finally, several conclusions are made and recommendations for future works are offered. Copyright © 2015 Elsevier Ltd. All rights reserved.

Aneurisma de artéria ilíaca interna roto: relato de caso Ruptured internal iliac artery aneurysm: case report

Directory of Open Access Journals (Sweden)

Cristina Toledo Afonso

2009-03-01

Full Text Available Aneurismas isolados da artéria ilíaca interna são raros, acometem 0,1% da população e correspondem a 1% dos aneurismas aorto-ilíacos. Na maioria das vezes, os pacientes são assintomáticos, mas podem apresentar dor abdominal, massa pulsátil no hipogástrio ou na fossa ilíaca, sintomas compressivos urinários, gastrointestinais ou neurológicos. Podem ocasionar quadro de abdome agudo, principalmente quando há ruptura. O diagnóstico precoce dos aneurismas isolados de artéria ilíaca interna é incomum, sendo identificados quando mais volumosos ou rotos, o que aumenta significativamente sua morbimortalidade e torna seu prognóstico mais reservado. Dessa forma, representam um desafio terapêutico. A ligadura cirúrgica tem sido o tratamento mais comum, entretanto a cirurgia endovascular tem mostrado bons resultados, inclusive nos aneurismas rotos. É relatado caso de aneurisma de artéria ilíaca interna isolado roto diagnosticado durante laparotomia para abordagem de abdome agudo.Isolated internal iliac artery aneurysms are rare. They affect 0.1% of the population, and account for 1% of aortoiliac aneurysms. Patients are mostly asymptomatic, yet they can have abdominal pain, pulsatile mass in the hypogastrium or iliac fossa, or urinary, gastrointestinal or neurological compressive symptoms. Such aneurysms are likely to course with an acute abdomen, especially when ruptured. Early diagnosis of isolated internal iliac artery aneurysms is difficult, as they are more easily detected when larger or ruptured, which significantly raises their morbidity and mortality rate and determines a poor prognosis. Therefore, they are a therapeutic challenge. Surgical ligation has been the most common treatment; however, the endovascular approach has presented good outcomes, even in the event of ruptured aneurysms. A case of ruptured isolated iliac artery aneurysm diagnosed during a laparotomy (acute abdomen approach is reported.

For What Purpose the Arts? An Analysis of the Mission Statements of Urban Arts High Schools in Canada and the United States

Science.gov (United States)

Gaztambide-Fernández, Rubén; Nicholls, Rachael; Arráiz-Matute, Alexandra

2016-01-01

While general arts programs have declined in many schools across the United States and Canada, the number of specialized art programs in public secondary schools has swelled since the 1980s. While this increase is often celebrated by arts educators, questions about the justification of specialized arts programs are rarely raised, and their value…

Researches of WWER fuel rods behaviour under RIA accident conditions

International Nuclear Information System (INIS)

Nechaeva, O.; Medvedev, A.; Novikov, V.; Salatov, A.

2003-01-01

Unirradiated fuel rod and refabricated fuel rod tests in the BIGR as well as acceptance criteria proving absence of fragmentation and the settlement modeling of refabricated fuel rods thermomechanical behavior in the BIGR-tests using RAPTA-5 code are discussed in this paper. The behaviour of WWER type simulators with E110 and E635 cladding was researched at the BIGR reactor under power pulse conditions simulating reactivity initiated accident. The results of the tests in four variants of experimental conditions are submitted. The behaviour of 12 WWER type refabricated fuel rods was researched in the BIGR reactor under power pulse conditions simulating reactivity initiated accident: burnup 48 and 60 MWd/kgU, pulse width 3 ms, peak fuel enthalpy 115-190 cal/g. The program of future tests in the research reactor MIR with high burnup fuel rod (up to 70 MWd/kgU) under conditions simulating design RIA in WWER-1000 is presented

The origin of the inferior phrenic artery: a study in 32 South Indian cadavers with a review of the literature Origem da artéria frênica inferior: estudo em 32 cadáveres da Índia do Sul com revisão da literatura

Directory of Open Access Journals (Sweden)

Thejodhar Pulakunta

2007-09-01

Full Text Available BACKGROUND: Considering the paucity of information presently available concerning inferior phrenic arteries, a more definitive study seemed appropriate and necessary, both for its potential clinical applications and to provide additional data to contemporary anatomical literature. OBJECTIVE: Most anatomical textbooks of gross anatomy offer very little information concerning the anatomy and distribution of the inferior phrenic artery (IPA. For that reason, the origin of the IPA has been studied and the available literature has been reviewed. METHODS: Thirty-two human adult cadavers preserved in formalin obtained from the departments of Anatomy, Kasturba Medical College, Manipal and Mangalore were dissected and the origin of the IPA was studied. RESULTS: The IPA had its usual origin from the abdominal aorta in 28 cases but in the remaining four cases, two were arising from the celiac trunk, one from the left gastric artery and one from the right renal artery. CONCLUSION: The IPA usually originates from the aorta or celiac artery, and less frequently from the renal, hepatic or left gastric arteries. The IPA is a major source of collateral or parasitized arterial supply to hepatocellular carcinoma, second only to the hepatic artery. Literature on the IPA origin and clinical implications of variation in its origin have been reviewed in this article.CONTEXTO: Considerando a escassez de informações atualmente disponíveis sobre artérias frênicas inferiores, umestudo mais definitivo nos pareceu apropriado e necessário, tanto por suas potenciais aplicações clínicas quanto para fornecer dados adicionais à literatura anatômica contemporânea. OBJETIVO: A maioria dos livros-texto de anatomia oferece muito poucas informações referentes à anatomia e distribuição da artéria frênica inferior (AFI. Por este motivo, a origem da AFI foi investigada e a literatura disponível foi revisada. MÉTODOS: Trinta e dois cadáveres humanos adultos

Study and simulation of irradiated zirconium alloys fracture under type RIA accidental loading conditions; Comprehension et modelisation de la rupture d'alliages de zirconium irradies en conditions accidentelles de type RIA

Energy Technology Data Exchange (ETDEWEB)

Le Saux, M. [CEA Saclay, Dept. des Materiaux pour le Nucleaire (DEN/DANS/DMN/SEMI), 91 - Gif-sur-Yvette (France)

2008-07-01

The thesis aims to study and simulate the mechanical behavior under Reactivity Initiated Accident loading conditions, of the Zircaloy 4 fuel claddings, irradiated or not. It also aims to characterize and simulate the behavior and the fracture under RIA loading conditions of hydrided Zircaloy 4 non irradiated. This study proposes an experimental approach and a simulation. (A.L.B.)

State of the social responsibility art

OpenAIRE

Varela López, Leidy Viviana; Universidad de San Buenaventura Cali.

2015-01-01

From the eighties, it has been addressing the issue of corporate social responsibility, specifically toward the defense of human rights and climate change. However, although they have applied corporate social responsibility principles in some of the existing institutions, it is still very small the work being done around the specific activity of solid waste management. Some works have been compiled to build a state of the art for understanding in depth the concept of corporate social responsi...

Correção endovascular de aneurisma da artéria esplénica: caso clínico Endovascular correction of splenic artery aneurysm: case report

Directory of Open Access Journals (Sweden)

José Almeida Lopes

2012-06-01

Full Text Available Os aneurismas da artéria esplénica, embora sejam os aneurismas esplâncnicos mais frequentes, cursam com uma prevalência de apenas 0,01%. Neste contexto os autores apresentam um caso clínico de uma doente de 41 anos com aneurisma da artéria esplénica de 20x29mm, tratada através da colocação de um stent coberto auto-expansível (Gore®, Viabahn®. É realizada uma revisão da literatura, das possíveis complicações e feita referência às várias hipóteses de tratamento, dando particular ênfase às novas técnicas endovasculares.Splenic artery aneurysms, although they are the most common splanchnic aneurysms, they have a prevalence of only 0,01%. In this context the authors present a case report of a 41 years female patient with a splenic artery aneurysm of 20x29mm, treated by deployment of a covered self-expandable stent (Gore® Viabahn®. It is performed a literature review of the pathology in question, possible complications and made reference to the various treatment options, with particular emphasis on the new endovascular techniques.

State of the art report on design for X

DEFF Research Database (Denmark)

Papanikolaou, Apostolos; Andersen, Poul; Kristensen, Hans Otto Holmegaard

2009-01-01

The present State of the Art report aims at defining and reviewing the curent state of the ship design process in the frame of a holistic approach, accounting for various objectives and constraints. The report addresses mainly the design of transportation carriers, though some covered aspects...

A State of the Art Overview

DEFF Research Database (Denmark)

Jahangiri, Tohid; Bak, Claus Leth; Silva, Filipe Miguel Faria da

2015-01-01

The first EHV composite cross-arms have been used since late 1990's in Switzerland. It was the first step to the compaction of towers sizes. Since then, significant advances have been made in composite cross-arms technology while the lattice construction technique has not been seriously challenged...... of EHV composite cross-arms and lightning protection methods are reviewed based on the state of the art review and subsequently some solutions are presented to overcome the two main challenges....

Meniscal Allograft Transplantation: State of the Art.

Science.gov (United States)

Trentacosta, Natasha; Graham, William C; Gersoff, Wayne K

2016-06-01

Meniscal allograft transplantation has evolved over the years to provide a state-of-the-art technique for the sports medicine surgeon to utilize in preserving contact mechanics and function of the knee in irreparable meniscal pathology. However, this procedure continues to spark considerable debate on proper tissue processing techniques, acceptable indications, methods of implantation, and potential long-term outcomes.

Sistematização da origem, da distribuição e dos territórios da artéria cerebral caudal na superfície do encéfalo em gatos Systematization of the origin, distribution and territory of the caudal cerebral artery on the surface of the encephalon in cats

Directory of Open Access Journals (Sweden)

Eduardo Maurício Mendes de Lima

2010-09-01

Full Text Available Foram estudados 26 encéfalos de gatos, adultos, sem diferenciação de sexo, sem raça definida, corados com látex e fixados por solução aquosa de formaldeído. As artérias cerebrais caudais, direita e esquerda, apresentaram-se únicas em 96,1 e 88,4% dos casos, respectivamente. Em 69,2% dos casos no antímero direito e 80,8% no esquerdo, a artéria cerebral caudal originou-se pela anastomose entre o ramo caudal da artéria carótida interna, com maior contribuição, e o ramo terminal da artéria basilar. Em 88,4% dos casos no antímero direito e em 84,6% no esquerdo, a artéria cerebral caudal originou a artéria tectal rostral e um ramo caudal. O ramo caudal bifurcou-se e vascularizou os colículos rostrais e caudais dos corpos quadrigêmeos e em alguns casos contribuiu na formação do plexo coroide do terceiro ventrículo. A artéria tectal rostral seguiu ventralmente ao lobo piriforme e durante seu trajeto liberou ramos para o hipocampo e, no antímero esquerdo, supriu a superfície dorsal do tálamo, contribuindo para a formação do plexo coroide do terceiro ventrículo.In this study were used 26 brains of adult cats, without sex differentiation and definable race, colored with latex and fixed in formaldehyde aqueous solution. The right and left caudal cerebral arteries were single in 96.1% and 88.4% of the sample, respectively. In 69.2% of the samples on the right side and 80.8% on the left, the caudal cerebral artery fin from the anastomosis behind the caudal branch of the internal carotid artery, with a large contribution, and the basal artery terminal branch. In 88.4% of the samples on the right side and 84.6% on the left, the caudal cerebral artery showed the tectal rostral artery and one caudal branche. The caudal branch forked in two branches that supplied the rostral and caudal colliculis of the quadruplet bodies and formed the choroid plexus of the third ventricle. The tectal rostral artery followed ventrally to the

Doplervelocimetria das artérias oftálmica e central da retina em gestantes normais Dopplervelocimetry of ophthalmic and central retinal arteries in normal pregnancies

Directory of Open Access Journals (Sweden)

Angélica Lemos Debs Diniz

2005-04-01

Full Text Available OBJETIVOS: avaliar os padrões dos índices doplervelocimétricos das artérias oftálmica e central da retina durante o segundo e terceiro trimestres da gestação normal e comparar os valores obtidos do olho direito e esquerdo das gestantes. MÉTODOS: estudo transversal no qual se avaliaram seis índices doplervelocimétricos das artérias central da retina e oftálmica em 51 gestantes normais, com idades gestacionais entre a 20ª e a 38ª semana. As variáveis analisadas foram os índices de resistência e pulsatilidade (IR, IP, os picos de velocidade sistólica e diastólica (PVS, PVD e a razão entre picos de velocidade (RPV. A análise dos índices doplervelocimétricos dos olhos direito e esquerdo foi realizada utilizando-se a mediana dos valores. Para a comparação dos valores dos índices entre os dois olhos das gestantes, utilizou-se o teste t de Student para dados pareados. A associação entre a idade gestacional e os índices foi testada empregando-se o coeficiente de correlação linear de Pearson. Adotou-se o nível de significância de 5% para os testes estatísticos. RESULTADOS: a mediana dos índices doplervelocimétricos das artérias oftálmica e central da retina foram, respectivamente: IP=1,83; IR=0,78; PVS=34,20; PVD=6,80; RPV=0,48 e IP=1,34; IR=0,70; PVS=7,40; PVD=2,10. Não houve diferenças na análise comparativa dos índices doplervelocimétricos entre os olhos direito e esquerdo das gestantes normais. O coeficiente de correlação linear entre a idade gestacional e os índices de ambas as artérias não mostrou diferença significante durante a gestação normal. CONCLUSÃO: é factível a análise unilateral dos índices doplervelocimétricos das artérias oftálmica e central da retina no estudo de doenças maternas sistêmicas. Não há mudança significativa dos índices doplervelocimétricos das artérias oftálmica e central da retina ao longo da gestação normal entre a 20ª e a 38ª semana.PURPOSE: to

State of the art of solid state dosimetry

International Nuclear Information System (INIS)

Souza, Susana O.; Yamamoto, Takayoshi; D'Errico, Francesco

2014-01-01

Passive solid-state detectors still dominate the personal dosimetry field. This article provides state of the art in this field and summarizes the most recent works presented on TL, OSL and RPL during the 17th International Conference on Solid State Dosimetry held in Recife in September 2013. The Article contains in particular the techniques Thermoluminescence (TL), Optically Stimulated Luminescence (OSL), radio photoluminescence (RPL). Thermoluminescence has the biggest advantage of the wide availability of commercial materials for dosimetry, and the nature tissue-equivalent of several of these materials. The limitation of the TL dosimetry presents fading luminance signal and the need for high temperatures to obtain the signal. The Optically Stimulated Luminescence has the advantages of high sensitivity, the possibility of multiple reading, while its limit is the need to use response compensating filters in addition to the high cost of equipment and dosimeters still restricted very few options trading . The radio photoluminescence has a reading that is completely non-destructive, but their dosimeters present lack of tissue-equivalent and a high cost. Presents the details of the techniques and the advantages and limitations of each of these will be discussed

State of the art in semiconductor detectors

International Nuclear Information System (INIS)

Rehak, P.; Gatti, E.

1990-01-01

The state of the art in semiconductor detectors for elementary particle physics and X-ray astronomy is briefly reviewed. Semiconductor detectors are divided into two groups; i) classical semiconductor diode detectors and ii) semiconductor memory detectors. Principles of signal formation for both groups of detectors are described and their performance is compared. New developments of silicon detectors are reported here. (orig.)

State of the art in semiconductor detectors

International Nuclear Information System (INIS)

Rehak, P.; Gatti, E.

1989-01-01

The state of the art in semiconductor detectors for elementary particle physics and x-ray astronomy is briefly reviewed. Semiconductor detectors are divided into two groups; classical semiconductor diode detectors; and semiconductor memory detectors. Principles of signal formation for both groups of detectors are described and their performance is compared. New developments of silicon detectors are reported here. 13 refs., 8 figs

The state-of-the-art of HSR in Europe.

NARCIS (Netherlands)

Hansen, J.

2009-01-01

In this section of the workshop we present an overview based on mapping the current state-of-the-art concerning various fields of health services research, addressing the different levels of analysis in HSR. (1) HSR at the level of health care systems, being national or sometimes regional entities,

Correção da origem anômala de artéria coronária esquerda com insuficiência mitral e hemólise mecânica Correction of anomalous origin of left coronary artery with mitral insufficiency and mechanical hemolisys

Directory of Open Access Journals (Sweden)

José Alberto Caliani

2004-12-01

Full Text Available Criança do sexo feminino, 2 meses de idade, apresentando quadro clínico de insuficiência cardíaca e sopro. Durante a investigação, foi realizado ecocardiograma e estudo cineangiocardiográfico que evidenciaram origem anômala da artéria coronária esquerda do tronco pulmonar e insuficiência mitral importante demonstrada ao doppler. A paciente foi submetida a tratamento cirúrgico com auxílio de circulação extracorpórea, que consistiu no reimplante da artéria coronária esquerda na aorta, associado à anuloplastia da valva mitral. No pós-operatório tardio, houve importante hemólise mecânica ocasionada pela plastia mitral. A paciente foi reoperada para remoção de retalho de pericárdio bovino. O ecocardiograma pós-operatório mostra insuficiência mitral leve e o paciente apresenta-se em classe funcional I (NYHA.A 2 months-old girl, presenting with heart failure and murmur was investigated using echocardiography and cardiac cathetherization revealing an anomalous left coronary artery origin from the pulmonary trunk and massive mitral regurgitation. The patient was submitted to surgery under cardiopulmonary bypass: the anomalous coronary was implanted in the aorta and the mitral valve repaired by annuloplasty. In the postoperative period the patient had important mechanical hemolysis caused by mitral annuloplasty. The patient underwent a second intervention to remove a piece of bovin pericardium. A postoperative echocardiogram revealed mild mitral insufficiency and the patient is free of symptoms.

State of the art in cosmology

International Nuclear Information System (INIS)

Zel'dovich, Ya.B.

1983-01-01

The present state of the art in cosmology is under discussion. The general picture of the Universe evolution is presented, and its main stages are outlined. The prooess of formation of the large scale Universe structure is considered. The possibility of investigation into the ''inflation'' period of the ''very-very early Universe'' from the view point of theoretical physics is sown. It is noted that cosmology will become a complete science only when physics gives an exhaustive answer to all issues raised by cosmology

Aircraft wake vortices : a state-of-the-art review of the United States R&D program

Science.gov (United States)

1977-02-28

The report summarizes the current state-of-the-art understanding : of the aircraft wake vortex phenomenon and the results of the United : States program to minimize the restrictions caused by aircraft wake : vortices in the terminal environment. The ...

Chernobyl - state of the art

International Nuclear Information System (INIS)

Souza, Daiane C.B. de; Vicente, Roberto; Rostelato, Maria Elisa C.M.; Borges, Jessica F.; Tiezzi, Rodrigo; Peleias Junior, Fernando S.; Souza, Carla D.; Rodrigues, Bruna T.; Benega, Marcos A.G.; Souza, Anderson S. de; Silva, Thais H. da

2014-01-01

This article aims to analyze what has been done so far in relation to damage caused by the accident and the state of art in Chernobyl, as well as the impact on radiation protection applied safety nuclear power plants. In the first part of the work a data survey was done through a bibliographic review and the in the second part data was collected during a visit, in June 2013 at the crash site, when was observed dose values in the affected areas and the works of repairs that have been made in the sarcophagus and surroundings as well as in official reports available through active international bodies. The main results indicate significant improvements in radiation protection systems

RIA testing capability of the transient reactor test facility

International Nuclear Information System (INIS)

Crawford, D.C.; Swanson, R.W.

1999-01-01

The advent of high-burnup fuel implementation in LWRs has generated international interest in high-burnup LWR fuel performance. Recent testing under simulated RIA conditions has demonstrated that certain fuel designs fail at peak fuel enthalpy values that are below existing regulatory criteria. Because many of these tests were performed with non-prototypically aggressive test conditions (i.e., with power pulse widths less than 10 msec FWHM and with non-protoypic coolant configurations), the results (although very informative) do not indisputably identify failure thresholds and fuel behavior. The capability of the TREAT facility to perform simulated RIA tests with prototypic test conditions is currently being evaluated by ANL personnel. TREAT was designed to accommodate test loops and vehicles installed for in-pile transient testing. During 40 years of TREAT operation and fuel testing and evaluation, experimenters have been able to demonstrate and determine the transient behavior of several types of fuel under a variety of test conditions. This experience led to an evolution of test methodology and techniques which can be employed to assess RIA behavior of LWR fuel. A pressurized water loop that will accommodate RIA testing of LWR and CANDU-type fuel has completed conceptual design. Preliminary calculations of transient characteristics and energy deposition into test rods during hypothetical TREAT RIA tests indicate that with the installation of a pressurized water loop, the facility is quite capable of performing prototypic RIA testing. Typical test scenarios indicate that a simulated RIA with a 72 msec FWHM pulse width and energy deposition of 1200 kJ/kg (290 cal/gm) is possible. Further control system enhancements would expand the capability to pulse widths as narrow as 40 msec. (author)

Efeitos da simpaticotomia endoscópica sobre as artérias carótidas e vertebrais na terapêutica cirúrgica da hiperidrose primária Effects of endoscopic sympathicotomy in carotid and vertebral arteries in the surgical treatment of primary hiperhidrosis

Directory of Open Access Journals (Sweden)

Jeancarlo F. Cavalcante

2005-01-01

Full Text Available OBJETIVOS: Analisar, em pacientes submetidos a simpaticotomia videotoracoscópica para tratamento da Hiperidrose Primária (HP, as conseqüências hemodinâmicas da desnervação vascular das artérias carótidas e vertebrais após a trans-secção cirúrgica da cadeia simpática torácica (simpaticotomia, através da mensuração de parâmetros ultra-sonográficos. MÉTODO: Vinte e quatro pacientes portadores de HP submetidos a quarenta e oito simpaticotomias torácicas endoscópicas foram avaliados através da mensuração da velocidade de pico sistólico (VPS, velocidade de pico diastólico (VPD, índice de pulsatibilidade (IP e índice de resistência (IR nas artérias carótidas comuns, internas e externas, além da artéria vertebral bilateralmente usando o eco-doppler duplex scan. As avaliações foram realizadas antes da intervenção cirúrgica e trinta dias após o procedimento. O teste de Wilcoxon foi usado na análise das diferenças entre as variáveis antes e depois da simpaticotomia. RESULTADOS: A simpaticotomia no nível de T3 foi a trans-secção mais realizada (95,83%, seja isoladamente (25% ou associada a T4 (62,50% ou a T2 (8,33%. Houve aumento significativo no IR e no IP da artéria carótida comum bilateralmente (pPURPOSES: Analyze, in patients with primary hyperhidrosis (PH who was undergone to videothoracoscopic sympathicotomy, the degree of vascular denervation after surgical transection of the thoracic sympathetic chain by measuring ultrasonografic parameters in carotid and vertebral arteries. METHODS: Twenty-four patients with PH underwent forty-eight endoscopic thoracic sympathicotomy and were evaluated by duplex eco-doppler measuring systolic peak velocity (SPV, diastolic peak velocity (DPV, pulsatility index (PI and resistivity index (RI in bilateral common, internal and external carotids, besides bilateral vertebral arteries. The exams were performed before operations and a month later. Wilcoxon test was used to

The Impact of ART on Live Birth Outcomes: Differing Experiences across Three States.

Science.gov (United States)

Luke, Sabrina; Sappenfield, William M; Kirby, Russell S; McKane, Patricia; Bernson, Dana; Zhang, Yujia; Chuong, Farah; Cohen, Bruce; Boulet, Sheree L; Kissin, Dmitry M

2016-05-01

Research has shown an association between assisted reproductive technology (ART) and adverse birth outcomes. We identified whether birth outcomes of ART-conceived pregnancies vary across states with different maternal characteristics, insurance coverage for ART services, and type of ART services provided. CDC's National ART Surveillance System data were linked to Massachusetts, Florida, and Michigan vital records from 2000 through 2006. Maternal characteristics in ART- and non-ART-conceived live births were compared between states using chi-square tests. We performed multivariable logistic regression analyses and calculated adjusted odds ratios (aOR) to assess associations between ART use and singleton preterm delivery (birth. ART use in Massachusetts was associated with significantly lower odds of twins as well as triplets and higher order births compared to Florida and Michigan (aOR 22.6 vs. 30.0 and 26.3, and aOR 37.6 vs. 92.8 and 99.2, respectively; Pinteraction order gestations per cycle was lower in Massachusetts, which may be due to the availability of insurance coverage for ART in Massachusetts. © 2016 John Wiley & Sons Ltd.

A quick guide to wind power forecating : state-of-the-art 2009.

Energy Technology Data Exchange (ETDEWEB)

Monteiro, C.; Keko, H.; Bessa, R.; Miranda, V.; Botterud, A.; Wang, J.; Conzelmann, G.; Decision and Information Sciences; INESC Porto

2009-11-20

This document contains a summary of the main findings from our full report entitled 'Wind Power Forecasting: State-of-the-Art 2009'. The aims of this document are to provide guidelines and a quick overview of the current state-of-the-art in wind power forecasting (WPF) and to point out lines of research in the future development of forecasting systems.

The state-of-the-art in 3D orebody modelling: a case study of KDC East gold mine, South Africa

CSIR Research Space (South Africa)

Manzi, MS

2013-10-01

Full Text Available The state-of-the-art in 3D modelling of the structurally complex orebody begins with (1) 3D seismic imaging, (2) horizon picking, (3) data conditioning, (4) fault detection, (5) fault-horizon projection, (6) data integration, and (7) statistical...

The LIFE Laser Design in Context: A Comparison to the State-of-the-Art

International Nuclear Information System (INIS)

Deri, R.J.; Bayramian, A.J.; Erlandson, A.C.

2011-01-01

The current point design for the LIFE laser leverages decades of solid-state laser development in order to achieve the performance and attributes required for inertial fusion energy. This document provides a brief comparison of the LIFE laser point design to other state-of-the-art solid-state lasers. Table I compares the attributes of the current LIFE laser point design to other systems. the state-of-the-art for single-shot performance at fusion-relevant beamline energies is exemplified by performance observed on the National Ignition Facility. The state-of-the-art for high average power is exemplified by the Northrup Grumman JHPSSL laser. Several items in Table I deal with the laser efficiency; a more detailed discussion of efficiency can be found in reference 5. The electrical-to-optical efficiency of the LIFE design exceeds that of reference 4 due to the availability of higher efficiency laser diode pumps (70% vs. ∼50% used in reference 4). LIFE diode pumps are discussed in greater detail in reference 6. The 'beam steering' state of the art is represented by the deflection device that will be used in the LIFE laser, not a laser system. Inspection of Table I shows that most LIFE laser attributes have already been experimentally demonstrated. The two cases where the LIFE design is somewhat better than prior experimental work do not involve the development of new concepts: beamline power is increased simply by increasing aperture (as demonstrated by the power/aperture comparison in Table I), and efficiency increases are achieved by employing state-of-the-art diode pumps. In conclusion, the attributes anticipated for the LIFE laser are consistent with the demonstrated performance of existing solid-state lasers.

Pseudo-aneurisma de artéria subclávia pós fratura de clavícula: relato de caso

OpenAIRE

ROSÁRIO, Ricardo Costa Val; RIOS, Adriana Vaggiani; FIGUEIREDO JÚNIOR, Fernando de Assis; CHRISTO, Sérgio Figueiredo Campos; SIMÃO FILHO, Charles; CHRISTO, Marcelo Campos

1997-01-01

Os autores descrevem a formação de um pseudo-aneurisma de artéria subclávia esquerda após trauma contuso seguido de fratura de clavícula esquerda. Comentários e uma breve revisão da literatura são mencionadosThe authors describe the left subclavian artery pseudo-aneurysm formation after blunt trauma followed by left clavicular fracture. Comments and a brief review of the literature are also mentioned.

Metodologia de pesquisa da história da arte para o estudo de obras de Salões de Arte da década de 1960

Directory of Open Access Journals (Sweden)

Nelyane Gonçalves Santos

2017-05-01

Full Text Available Na tendência de estudos acerca dos salões na história da arte no Brasil é necessário o desenvolvimento de uma metodologia pautada na análise das obras que compuseram esses eventos. A constituição dos circuitos artísticos a partir da efervescência que os salões geravam entre artistas, críticos e público, nos chama a atenção sobre a necessidade de ampliarmos a compreensão das propostas artísticas vistas a partir da materialidade e visualidade das obras. Isto porque, o estabelecimento de marcos definidores de uma arte brasileira na transição do moderno ao contemporâneo, afastou os discursos históricos das obras e os aproximou da interpretação de fontes documentais, forçosamente associadas aos movimentos de arte em esfera internacional. Assim, a proposta metodológica que aqui se apresenta, coloca o desafio da interpretação das obras a partir de seus próprios vestígios e sentidos, sem desconsiderar a ampliação da pesquisa por meio de fontes documentais que esclareçam, mas não “profetizem” uma revelação de significado para a arte no Brasil da década de 1960. ABSTRACT The trend of studies on the salons in Brazil's art history is necessary to develop a guided methodology in the analysis of the works that made up those events. The constitution of the artistic circuit from the effervescence that the halls generated among artists, critics and the public draws our attention on the need to broaden the understanding of artistic proposals views from the visual and materiality of the works. This is because the establishment of the defining landmarks of Brazilian art in the transition from modern to contemporary, away from the historical discourse of the works and approached the interpretation of documentary sources, necessarily associated with art movements in the international sphere. Thus, the methodological proposal presented here, puts the challenge of interpretation of works from its own traces and directions

The job demands-resources model : state of the art

NARCIS (Netherlands)

Bakker, A.B.; Demerouti, E.

2007-01-01

Purpose - The purpose of this paper is to give a state-of-the art overview of the Job Demands-Resources (JD-R) model Design/methodology/approach - The strengths and weaknesses of the demand-control model and the effort-reward imbalance model regarding their predictive value for employee well being

Medida da velocidade de fluxo nas artérias cerebrais utilizando ultra-som Doppler transfontanela antes e após o tratamento cirúrgico da hidrocefalia

Directory of Open Access Journals (Sweden)

ASSIS MARCELO CARDOSO DE

1999-01-01

Full Text Available Vinte e sete crianças portadoras de hidrocefalia de diversas etiologias, diagnosticadas pelo exame clínico, neurosonografia e tomografia cerebral computadorizada, foram submetidas a avaliação por ultra-som Doppler (US-Doppler transfontanela para medida da velocidade de fluxo sanguíneo e cálculo do índice de resistência (IR nas artérias cerebrais anteriores, médias e carótidas internas. Todas as crianças foram submetidas a avaliações no pré-operatório e no 1º, 7º, 30º e 60º dias do pós-operatório. Concluímos ser a técnica de neurosonografia e US-Doppler útil no diagnóstico da hidrocefalia, na indicação e controle das derivações liquóricas e no acompanhamento das modificações dos valores do IR comparando-os no pré e pós-operatório imediato e tardio do tratamento cirúrgico da hidrocefalia. Os resultados obtidos permitiram-nos ainda, pela comparação dos valores do IR entre as diversas artérias avaliadas nos diferentes estágios do estudo, concluir serem as artérias cerebrais anteriores representativas das alterações máximas que ocorrem na resistência vascular cerebral em pacientes pediátricos portadores de hidrocefalia.

Primary system fission product release and transport. A state-of-the-art report to the committee on the safety of nuclear installations

International Nuclear Information System (INIS)

Wright, A.L.

1994-06-01

This report presents a summary of the status of research activities associated with fission product behavior (release and transport) under severe accident conditions within the primary systems of water-moderated and water-cooled nuclear reactors. For each of the areas of fission product release and fission product transport, the report summarizes relevant information on important phenomena, major experiments performed, relevant computer models and codes, comparisons of computer code calculations with experimental results, and general conclusions on the overall state of the art. Finally, the report provides an assessment of the overall importance and knowledge of primary system release and transport phenomena and presents major conclusions on the state of the art

Primary system fission product release and transport: A state-of-the-art report to the committee on the safety of nuclear installations

International Nuclear Information System (INIS)

Wright, A.L.

1994-06-01

This report presents a summary of the status of research activities associated with fission product behavior (release and transport) under severe accident conditions within the primary systems of water-moderated and water-cooled nuclear reactors. For each of the areas of fission product release and fission product transport, the report summarizes relevant information on important phenomena, major experiments performed, relevant computer models and codes, comparisons of computer code calculations with experimental results, and general conclusions on the overall state of the art. Finally, the report provides an assessment of the overall importance and knowledge of primary system release and transport phenomena and presents major conclusions on the state of the art

Primary system fission product release and transport: A state-of-the-art report to the committee on the safety of nuclear installations

Energy Technology Data Exchange (ETDEWEB)

Wright, A.L. [Oak Ridge National Lab., TN (United States)

1994-06-01

This report presents a summary of the status of research activities associated with fission product behavior (release and transport) under severe accident conditions within the primary systems of water-moderated and water-cooled nuclear reactors. For each of the areas of fission product release and fission product transport, the report summarizes relevant information on important phenomena, major experiments performed, relevant computer models and codes, comparisons of computer code calculations with experimental results, and general conclusions on the overall state of the art. Finally, the report provides an assessment of the overall importance and knowledge of primary system release and transport phenomena and presents major conclusions on the state of the art.

PERCURSOS DE UMA DESMONTAGEM: Memórias autobiográficas num processo artístico-metodológico

OpenAIRE

Bitter, Sigrid; UFU

2014-01-01

A proposta deste artigo é apresentar a arte atravessando a minha história de vida e as minhas escolhas pessoais, por meio de um processo de desmontagem apresentado na disciplina Pedagogia(s) do Teatro: Práticas Contemporâneas, ministrada pelos professores: Dra. Mara Leal e Dra. Ileana Diéguez, do programa DINTER UNIRIO/UFU-2013. Este texto aponta também para um possível conceito de desmontagem e como ela vem sendo apresentada, além de observações e socializações oriundas das desmontagens dos ...

Alternativa técnica no tratamento endovascular dos aneurismas da artéria poplítea A technical alternative for the endovascular treatment of popliteal artery aneurysms

Directory of Open Access Journals (Sweden)

Marcelo Ferreira

2008-03-01

Full Text Available O aneurisma de artéria poplítea é relativamente raro, porém representa cerca de 85% de todos os aneurismas arteriais periféricos. Apresenta-se geralmente com um quadro de complicação isquêmica e elevado risco de perda do membro acometido. Em função disso, preconiza-se seu tratamento eletivo, atualmente realizado com resultados satisfatórios pela técnica endovascular. Relatamos nossa experiência com a utilização do stent de nitinol auto-expansível revestido com PTFEe - Fluency (Bard, Alemanha, reforçado internamente com o stent de nitinol auto-expansível Zilver (Cook, EUA no tratamento de um aneurisma de artéria poplítea.Popliteal artery aneurysm is relatively rare, but represents around 85% of all peripheral arterial aneurysms. It is usually presented with ischemic complication and high risk of limb loss. For that reason, its elective treatment is indicated and currently carried through with satisfactory results using endovascular techniques. We describe our experience with the use of an ePTFE-covered nitinol self-expandable stent graft - Fluency (Bard, Germany, reinforced internally with the nitinol self-expandable Zilver stent (Cook, USA for the treatment of a popliteal artery aneurism.

Nickel-base superalloy powder metallurgy: state-of-the-art

International Nuclear Information System (INIS)

Allen, M.M.; Athey, R.L.; Moore, J.B.

1975-01-01

Development of powder metallurgical methods for fabrication of Ni-base superalloy turbine engine disks is reviewed. Background studies are summarized and current state-of-art is discussed for the F100 jet engine, advanced applications, and forging processes

Symposium Connects Government Problems with State of the Art Network Science Research

Science.gov (United States)

2015-10-16

Symposium Connects Government Problems with State-of-the- Art Network Science Research By Rajmonda S. Caceres and Benjamin A. Miller Network...the US Gov- ernment, and match these with the state-of-the- art models and techniques developed in the network science research community. Since its... science has grown significantly in the last several years as a field at the intersec- tion of mathematics, computer science , social science , and engineering

Anastomose mamária-coronária: análise de 2923 casos Mammary-coronary artery anastomosis: analysis of 2923 cases

Directory of Open Access Journals (Sweden)

Jarbas J Dinkhuysen

1987-04-01

ção entre 5 a 10 anos, apenas com mamária isolada, em 55 reestudos constataram-se 94,4% (50 de mamárias permeáveis e 5,6% (3 de ocluidas. A mortalidade intra-hospitalar, nos 2923 casos, foi de 3,45%.At the Instituto Dante Pazzanese de Cardiollogia, the use of mammary-coronary anastomosis was iniciated in 1972, isolated or with saphenous vein by-pass or other procedure. Initially only left internal mammary artery LAD anastomosis was employed in a few (57 cases. In 1973/1974, the aplication of this technique was intensified-386 cases. The method was practically descontinued between 1975 to 1982 - only 43 cases were performed. Since then, its use increased steadily and the right internal mammary artery has been used as well. In 1984, studying 177 patients, we observed that this technique does not influence the incidence of external dehiscence on the reoperation for bleeding; but in 25% occurred an elevation of hemolateral diaphragm, in 17% atelectasis, and in 27.6% pleural effusion. In 654 patients with mammary-coronary anastomoses and saphenous vein grafts followed up to nine years; patency was 91.5% for mammaries and 70.6% for saphenous veins. In another group of 102 patients with isolated mammarycoronary anastomosis patency was 94.4% in a period between 5 and 10 years. The mortality rate of all 2923 cases was 3.45%.

Measuring the State-of-the-Art in Laser Cut Quality

OpenAIRE

Pocorni, Jetro; Powell, John; Ilar, Torbjörn; Schwarz, A.; Kaplan, Alexander

2013-01-01

This paper discusses the strategy appropriate to investigating the state of the art of laser cutting from an industrial point of view. The importance of creating the samples in a high quality industrial environment is emphasised and preliminary results are presented.

Estado-da-arte da simulação da taxa de fixação de carbono de ecossistemas tropicais State-of-the-art of the simulation of carbon fixation rates by tropical ecosystems

Directory of Open Access Journals (Sweden)

Marcos Heil Costa

2009-06-01

Full Text Available Este trabalho avalia o estado-da-arte de modelos de simulação da taxa de fixação de carbono, ou produção primária liquida (NPP, de ecossistemas tropicais em duas configurações diagnósticas (simulação em sítios micrometeorológicos e simulação forçada por dados climáticos e por produtos de sensoriamento remoto e uma prognóstica (simulação por um modelo acoplado clima-vegetação. Os resultados indicam que os modelos de estimativa de NPP atingiram capacidade de fazer estimativas não-viesadas de valores médios regionais de NPP, tanto no modo diagnóstico, quanto no modo prognóstico, com erros inferiores a 5%, enquanto o valor esperado do erro em cada sítio é inferior a 10% no modo diagnóstico e inferior a 20% no modo prognóstico. Os modelos estado-da-arte são capazes de monitorar a taxa de fixação de carbono por ecossistemas tropicais de maneira rotineira, sendo esperados baixos erros para essas estimativas.This work evaluates the state-of-the-art of the simulation of carbon fixation rates, or net primary production (NPP by tropical ecosystems in two diagnostic configurations (simulation at micrometeorological sites and simulation forced by climate datasets and remote sensing products and one prognostic (simulation by a coupled climate-biosphere model. The results indicate that the NPP simulation models are capable of unbiased estimates of average regional values of NPP, both in diagnostic and in prognostic mode, with errors smaller than 5%, while the expected value of the error in each site is smaller than 10% in the diagnostic mode and smaller than 20% in the prognostic mode. State-of-the-art models are capable of routinely monitoring the net primary production of tropical ecosystems, with low errors expected for these estimates.

Integração lavoura e pecuária: o estado da arte e inovações tecnológicas Crop and livestock integration: the state of the art and the near future

Directory of Open Access Journals (Sweden)

Manuel Claudio Motta Macedo

2009-07-01

pesquisas, resultados já alcançados, e considerações sobre o futuro.Sustainability is an actual theme and very present in all discussion in the tropical agriculture world, including Brazil. This country experienced high taxes of development in agribusiness, increasing exportation trading, producing foods of better quality and raising incoming rates of farmers. However, two mains aspects call the attention in respect to sustainability: excessive soil preparation with monoculture of annual crops and pasture degradation. These situations have brought losses in crop and livestock yields, increased soil degradation and collapse of natural resources. Continuous cropping of monoculture accelerates attacks of insects and diseases, specially the ones related to soil interactions. Technologies such as minimum tillage, crop rotation and crop-livestock integration can alleviate these problems and drive agriculture to sustainability. Minimum tillage has increase to more than 60% of soil tillage usage in Brazil. Adoption of this system in large scale, covering more regions, with different clime and soil, is highly dependent of crops that produce high amounts of residues and straw for better soil coverage. Crop-livestock integrated systems (CLIS have been cultivated with many crops, such as: soybeans, corn, pearl millet, sorghum, cotton, sunflower, etc. and especially perennial tropical grasses asBrachiaria spp, intercropped or not. CLIS can be one important alternative to pasture recuperation and improvement of annual crops. They increase straw to minimum tillage systems, improve soil chemical, physical and biological properties, and better use of equipments, farmers income, and jobs in rural area. This paper analyze the state of the art in CLIS research, later results, and bring some considerations for the near the future of CLIS in Brazil.

Development of a state-of-the-art solid waste characterisation facility at JRC ISPRA

International Nuclear Information System (INIS)

Huhtiniemi, I.; Anselmi, M.; Hubert, P.; Vassallo, G.

2003-01-01

This paper will review the development and construction of a state-of-the-art waste characterisation facility that represents a fundamental element in the JRC's strategy to characterise radioactive wastes originating from four decades of nuclear research activities conducted at the Ispra Site. The state-of-the-art NDA measurement solution selected by JRC-Ispra will be presented in the light of special requirements imposed by applicable Italian legislation, norms and the qualities of the waste packages. The intended plant combines the state-of-the-art-measurement solution with comprehensive process automation in an industrial environment and is therefore of significant interest to the radioactive waste management community. (orig.)

Falso aneurisma da artéria meníngea média importância do diagnóstico angiográfico: relato de caso

Directory of Open Access Journals (Sweden)

Carlos A. M. Melro

1993-09-01

Full Text Available É objetivo deste artigo relatar o caso de um paciente com falso aneurisma da artéria meníngea média e fazer breve revisão da literatura sobre o assunto. O paciente, etilista e vítima de quedas frequentes, foi internado para investigação de sindrome convulsiva. Dentre os exames realizados observou-se, ao raio-X do crânio, fratura do osso temporal e, na carótido-angiografia comum, presença de dilatação aneurismática na artéria meníngea média em íntima relação com a fratura. O relato do caso se justifica visto a baixa frequência desta patologia e sua analogia com hematomas intracranianos de evolução atípica, bem como para salientar o papel da carótido-angiografia na avaliação de alguns casos de traumatismo crânio-encefálico.

Flexible AC transmission systems: the state of the art

Energy Technology Data Exchange (ETDEWEB)

Edris, Abdel-Aty [Electric Power Research Inst., Palo Alto, CA (United States). Electric Systems Division

1994-12-31

Flexible AC transmission systems (FACTS) is a concept promoting the use of power electronic controllers to enhance the controllability and usable capacity of AC transmission. This paper presents the state of the art of FACTS and the status of the current projects for the application of the FACTS controllers in transmission systems. (author) 8 refs., 8 figs.

Celiac artery in New Zealand rabbit: anatomical study of its origin and arrangement for experimental research and surgical practice Artéria celíaca em coelhos Nova Zelândia: estudo anatômico de sua origem e arranjo para a pesquisa experimental e a prática cirúrgica

Directory of Open Access Journals (Sweden)

Marcelo Abidu-Figueiredo

2008-05-01

Full Text Available Rabbits have been used as an experimental model in many diseases and for the study of toxicology, pharmacology and surgery in many universities. However, some aspects of their macro anatomy need a more detailed description, especially the abdominal and pelvic arterial vascular system, which has a huge variability in distribution and trajectory. Thirty cadaveric adult New Zealand rabbits, 13 male and 17 female, with an average weight and rostrum-sacral length of 2.5 kg and 40cm, respectively, were used. The thoracic aorta was cannulated and the vascular system was filled with stained latex S-65. The celiac artery and its proximal branches were dissected and lengthened in order to evidence origin and proximal ramifications. The celiac artery emerged between the 12th and 13th thoracic vertebra in 11 (36.7% rabbits; at the level of the 13th thoracic vertebra in 6 (20% rabbits; between the 13th thoracic vertebra and the 1st lumbar vertebra in 12 (40% rabbits; and at the level of the 1st lumbar vertebra in only one (3.3% rabbit. The mean length of the celiac artery was 0.5cm. The celiac artery first branch was the lienal artery, the second branch was the left gastric artery and the hepatic artery arose from the left gastric artery in all the dissected rabbits. No relation was observed between the celiac artery length and the rostrum-sacral length in rabbits. The number of left gastric and lienal artery branches and the distribution of celiac artery origin are not gender dependent.Os coelhos têm sido usados como modelo experimental em diferentes patologias e para estudos de toxicologia, farmacologia e cirurgia em várias universidades. Entretanto apesar de sua grande utilização, muitos aspectos de sua macroanatomia, em especial os que se referem ao sistema vascular arterial que irrigam as viscerais abdomino-pélvicas ainda carecem de uma descrição mais detalhada, pois os vasos arteriais apresentam grande variabilidade na sua distribuição e

Características das artérias carótidas de adolescentes saudáveis ao ultrassom com doppler

OpenAIRE

Jovita Lane Soares Santos Zanini

2012-01-01

As doenças cardiovasculares constituem a principal causa de morte na população geral e os estudos de imagem têm se firmado como importante ferramenta para estratificação de risco cardiovascular. A medida da espessura mediointimal (EMI) das artérias carótidas por meio da ultrassonografia tem sido avaliada em numerosos estudos realizados em crianças e adolescentes, demonstrando ser um preditor independente de aterosclerose e de futuros eventos cardiovasculares. O estudo das características ...

Inter-comparison of state-of-the-art MSS and geoid models in the Arctic Ocean

DEFF Research Database (Denmark)

Skourup, Henriette; Farrell, Sinead; Hendricks, Stefan

in errors in the estimated freeboard heights, especially in areas with a sparse lead distribution in consolidated ice conditions. Additionally these errors can impact ocean geostrophic current estimates and remaining biases in the models may impact longer-term, multi-sensor oceanographic time-series of sea......State-of-the-art Arctic Ocean mean sea surface (MSS) and geoid models are used to support sea ice freeboard estimation from satellite altimeters, and for oceanographic studies. However, errors in a given model in the high frequency domain, e.g. due to unresolved gravity features, can result...

Efeito do sulfato de magnésio sobre o índice de pulsatilidade das artérias uterinas, umbilical e cerebral média fetal de acordo com a persistência da incisura protodiastólica da artéria uterina na pré-eclâmpsia grave Effect of magnesium sulfate on pulsatility index of uterine, umbilical and fetal middle cerebral arteries according to the persistence of bilateral diastolic notch of uterine arteries in patients with severe preeclampsia

Directory of Open Access Journals (Sweden)

Alex Sandro Rolland Souza

2009-02-01

ção intravenosa de 6 g do sulfato de magnésio nas pacientes com pré-eclâmpsia grave, ocorre uma diminuição da pressão arterial e do IP das artérias uterinas, umbilicais e cerebral média fetal, além de aumento da frequência cardíaca materna, não influenciada pela presença de incisura protodiastólica bilateral nas artérias uterinas.PURPOSE: to evaluate the effect of magnesium sulphate on the pulsatility index (PI of the uterine, umbilical and fetal middle cerebral arteries, according to the persistency or not of the bilateral protodiastolic notch of the uterine arteries in severe pre-eclampsia. METHODS: a cohort study including 40 pregnant women with severe pre-eclampsia, 23 of them presenting bilateral protodiastolic notch, and 17, unilateral/absent notch. The patients were submitted to Doppler velocimetry before and 20 minutes after the intravenous administration of 6 g of magnesium sulphate. The examination was carried out with the patient in semi-Fowler position, the sonograms being obtained during fetal inactivity, in apnea and absent uterine contraction periods. All the exams were performed by two researchers, the average being considered as the final result. Wilcoxon's test was used to compare the PI, before and after magnesium sulphate in both groups. The difference between the two measurements (before and after magnesium sulphate was compared between the groups (bilateral incision and unilateral/absent incision using the Mann-Whitney test. RESULTS: there was a significant increase in the maternal heart rate (MHR and decrease in the maternal blood pressure, and in the PI medians of the two uterine arteries and in the fetal middle cerebral artery, after magnesium sulphate in both groups. There was a significant decrease in the PI of the left uterine artery and in the umbilical artery, only in the protodiastolic unilateral/absent notch group. Nevertheless, it was not found any significant difference regarding the PI of the right uterine artery, or the cerebral

Heuristic environment as condition of art criticism competence ...

African Journals Online (AJOL)

Essential factor of professionally significant competences development of future art direction teachers is the educational environment as which it is necessary to understand the integrity of pedagogical conditions, interactions, processes, components of pedagogical process which is specially organized for achievement of the ...

Leadership and Fairness: The state of the art.

OpenAIRE

van Knippenberg, D.; de Cremer, D.; van Knippenberg, B.M.

2007-01-01

textabstractResearch in leadership effectiveness has paid less to the role of leader fairness than probably it should have. More recently, this has started to change. To capture this development, we review the empirical literature in leadership and fairness to define the field of leadership and fairness, to assess the state of the art, and to identify a research agenda for future efforts in the field. The review shows that leader distributive, procedural, and especially interactional fairness...

Nuclear Liability, State of the Art

International Nuclear Information System (INIS)

Reitsma, S. M. S.

2010-01-01

Over fifty years ago states started to introduce legislation protecting the public against the potential magnitude and peculiarity of risks arising from the nuclear energy production. They did so trough a specific liability and compensation regime. Whether legislation was based on national initiatives or, as more frequently, related to international nuclear liability conventions, it was based on a number of principles being applied universally. Furthermore, it at the same time strived for not preventing the development of the nuclear industry because of an unbearable liability. This paper aims at explaining the broad outline of the above legislation, its development since its early years, the state of the art as regards its modernisation as well as the (alleged) problems underlying the delay in its introduction in a number of countries. When dealing with those problems it will be inevitable to touch upon a number of insurance related matters, which, as an insurer I am happy to tell, will lead me to familiar territory.(author).

Memórias de exposições: o projeto RaisExpo

Directory of Open Access Journals (Sweden)

Joana Baião

2016-03-01

Full Text Available A história das exposições tornou-se num dos temas atualmente mais discutidos e valorizados nos campos da história da arte e da museologia. Esta nova disciplina está a contribuir para uma revisão crítica da historiografia da arte, das práticas museológicas e das políticas de promoção artística e valorização patrimonial. O projeto Catálogo Raisonné Online das Exposições de Arte da Fundação Calouste Gulbenkian insere-se no amplo debate internacional em torno do tema das exposições, participando numa tendência recente de valorização patrimonial destes eventos e de salvaguarda da sua memória. Neste artigo damos a conhecer os objetivos, a estrutura e a metodologia de trabalho deste projeto, tendo em conta os desafios que se colocam à valorização e divulgação deste património.

Chernobyl - state of the art; Chernobyl - o estado da arte

Energy Technology Data Exchange (ETDEWEB)

Souza, Daiane C.B. de; Vicente, Roberto; Rostelato, Maria Elisa C.M.; Borges, Jessica F.; Tiezzi, Rodrigo; Peleias Junior, Fernando S.; Souza, Carla D.; Rodrigues, Bruna T.; Benega, Marcos A.G.; Souza, Anderson S. de; Silva, Thais H. da, E-mail: dcsouza@ipen.br, E-mail: rvicente@ipen.br, E-mail: elisaros@ipen.br, E-mail: rtiezzi@ipen.br, E-mail: carladdsouza@yahoo.com.br, E-mail: marcosagbenega@ipen.br, E-mail: bteigarodrigues@gmail.com, E-mail: thaishunk@ipen.br [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

2014-07-01

This article aims to analyze what has been done so far in relation to damage caused by the accident and the state of art in Chernobyl, as well as the impact on radiation protection applied safety nuclear power plants. In the first part of the work a data survey was done through a bibliographic review and the in the second part data was collected during a visit, in June 2013 at the crash site, when was observed dose values in the affected areas and the works of repairs that have been made in the sarcophagus and surroundings as well as in official reports available through active international bodies. The main results indicate significant improvements in radiation protection systems.

Paediatric thoracoscopy: State of the art | Van Niekerk | South ...

African Journals Online (AJOL)

Many advanced procedures, including lobectomy, repair of tracheo-oesophageal fistula, excision of mediastinal tumours and diaphragmatic hernia repairs, are being done routinely in paediatric surgery centres around the world. This article reviews the state of the art of thoracoscopic surgery in children. The author selected ...

Solar heating systems: state-of-the-art and prospects for the future

International Nuclear Information System (INIS)

Frei, U.

2001-01-01

This article discusses the development of the use of solar collectors over their past 30 years of history and describes today's state-of-the-art for solar installations that are used for hot water preparation and space heating. Advances made in storage technology, in the dimensioning of installations and in the operation of the systems are discussed in detail. The importance of low-flow operation for hot water installations is emphasised. Also, the integration of solar and conventional heating systems is looked at and questions regarding further factors such as those encountered in low-energy-consumption buildings are discussed. Future developments in the product and market areas are looked at, including new forms of storage as well as solar cooling and air-conditioning

State of the art: alumina ceramics for energy applications

International Nuclear Information System (INIS)

Hauth, W.E.; Stoddard, S.D.

1978-01-01

Prominent ceramic raw materials and products manufacturers were surveyed to determine the state of the art for alumina ceramic fabrication. This survey emphasized current capabilities and limitations for fabrication of large, high-density, high-purity, complex shapes. Some directions are suggested for future needs and development

Nuclear power plant decommissioning: state-of-the-art review

International Nuclear Information System (INIS)

Williams, D.H.

1984-01-01

A brief orientation to the state-of-the-art of nuclear power plant decommissioning discusses the related areas of experience, tools and techniques, and planning. There have been 68 nuclear reactor decommissionings to date, including 9 power plants, some of which were mothballed. The picture suggests that the term art may be misapplied since decommissioning is now more of a mature commercial industrial than a research and development endeavor. It also suggests that the nuclear industry has shown foresight by preparing for it before a crisis situation developed. Some of this has already influenced operators of coal power plants, especially where hazardous materials may be involved. 33 references, 1 table

Harvesting Robots for High-value Crops: State-of-the-art Review and Challenges Ahead

NARCIS (Netherlands)

Bac, C.W.; Henten, van E.; Hemming, J.; Edan, Y.

2014-01-01

This review article analyzes state-of-the-art and future perspectives for harvesting robots in high-value crops. The objectives were to characterize the crop environment relevant for robotic harvesting, to perform a literature review on the state-of-the-art of harvesting robots using quantitative

The state of the art in static and dynamic games

NARCIS (Netherlands)

De Giovanni, P.

2009-01-01

Purpose - The purpose of this paper is to investigate the state of the art in static and dynamic games (or inter-firm relationships). This research area has changed significantly over the last 25 years through the development of phenomena such as the supply chain and the progressive overcoming of

The Beijing Olympics and the art of nation-state maintenance

NARCIS (Netherlands)

de Kloet, J.; Pak Lei Chong, G.; Liu, W.

2008-01-01

This article maps out how different actors are involved in the promotion and mediation of the Olympics. It looks at the roles of, first, the nation-state, through an analysis of the promotional materials; second, the art world and global companies, through an analysis of the touring exhibition

A Snapshot of State Policies for Arts Education

Science.gov (United States)

Arts Education Partnership, 2014

2014-01-01

It has been said that while history shapes the hand a state is dealt, public policy determines how the hand is played. State policy for K-12 education--and, by extension, for arts education--is shaped through the actions of various state governmental entities--governors, legislatures, courts, and commissioners and boards of education--in response…

Anatomia vascular das artérias renais e gonadais de Podocnemis unifilis Schweigger, 1812 (Testudines, Pelomedusidae - DOI: 10.4025/actascibiolsci.v31i2.680 Vascular anatomy of renal and gonadal arteries of Podocnemis unifilis Schweigger, 1812 (Testudines-Pelomedusidae - DOI: 10.4025/actascibiolsci.v31i2.680

Directory of Open Access Journals (Sweden)

Árthur Paulino Sanzo Kaminishi

2009-05-01

Full Text Available Este trabalho foi desenvolvido com o intuito de enriquecer o conhecimento sobre a morfologia vascular das artérias renais e gonadais de Podocnemis unifilis, facilitando o entendimento da fisiologia clínica e cirúrgica destes animais. Foram utilizados cinco exemplares machos de Podocnemis unifilis (tracajá, coletados segundo a Licença nº 066/2004-Ibama/RAM. A artéria carótida esquerda e a veia femoral direita foram canuladas e, pelas mesmas, foi introduzida solução fisiológica para lavagem do sistema vascular; em seguida, aplicou-se solução de Neoprene Látex “450” corada com pigmento específico (Globo S/A Tintas e Pigmentos. O material foi fixado em solução de Formol tamponado a 10% por um período mínimo de 96h. Uma abertura central e de formato quadrangular foi feita na metade caudal do plastrão e casco, de forma a expor os ramos da artéria aorta que irrigam os rins e as gônadas. Observou-se que as artérias renais se originam da face ventral da artéria aorta dorsal, em número de dois pares para cada rim e, em um único exemplar, elas originaram uma artéria renal direita e duas esquerdas. A artéria gonadal surgiu a partir da artéria renal, e apenas um par penetrou pela face dorsal de cada gônada.This work was developed with the aim of enriching knowledge on the vascular morphology of renal and gonadal arteries of Podocnemis unifilis, thus increasing the understanding of the clinical and surgical physiology of these animals. Five Podocnemis unifilis males were used, collected according to license no. 066/2004-Ibama/RAM. The left carotid artery and right femoral vein were cannulated, and a serum solution was introduced to remove obstructions from the vascular system. A solution of Neoprene Latex “450” dye was injected. The material was fixed in a solution of 10% formaldehyde for a period of 96 hours. Next, a square-shaped central opening was made in the caudal end of the plastron and bridge, exposing the

Sensors and Technologies in Spain: State-of-the-Art

Directory of Open Access Journals (Sweden)

Gonzalo Pajares

2014-08-01

Full Text Available The aim of this special issue was to provide a comprehensive view on the state-of-the-art sensor technology in Spain. Different problems cause the appearance and development of new sensor technologies and vice versa, the emergence of new sensors facilitates the solution of existing real problems. [...

State of the art Advanced Driver Assistance Systems (ADAS).

NARCIS (Netherlands)

OEI, H.-L.

2017-01-01

An overview of state-of-the-art ADA Advanced Driver Assistance systems is given. First a main structuring system for the ADA systems is presented, needed for purposes of relevancy, and consistency : the three phases in the accident process, i.e. pre-crash, crash and post-crash; the driving task at

Analyst workbenches state of the art report

CERN Document Server

Rock-Evans, R

1987-01-01

Analyst Workbenches examines various aspects of analyst workbenches and the tasks and data that they should support. The major advances and state of the art in analyst workbenches are discussed. A comprehensive list of the available analyst workbenches, both the experimental and the commercial products, is provided. Comprised of three parts, this book begins by describing International Computers Ltd's approach to automating analysis and design. It then explains what business analysis really means, outlines the principal features of analyst workbenches, and considers the ways in which they can

Text Generation: The State of the Art and the Literature.

Science.gov (United States)

Mann, William C.; And Others

This report comprises two documents which describe the state of the art of computer generation of natural language text. Both were prepared by a panel of individuals who are active in research on text generation. The first document assesses the techniques now available for use in systems design, covering all of the technical methods by which…

Teacher Evaluation in the Arts Disciplines: Three State Perspectives

Science.gov (United States)

Gates, Karol; Hansen, Deb; Tuttle, Lynn

2015-01-01

The purpose of this report is to provide insight into how state departments are implementing legislative requirements for educator evaluation, particularly the specific circumstances states encounter around arts education. Spotlights on Delaware, a first-round recipient of Race to the Top funding, and Colorado and Arizona, third-round recipients,…

Morfologia da artéria cerebelar superior do macaco prego (Cebus apella L., 1766: divisões e anastomoses Morphology of the superior cerebellar artery of the “macaco prego” (Cebus paella L., 1766: divisions and anastomoses

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Rosimeire Alves da Silva

2002-04-01

Full Text Available Dando continuidade a estudos já existentes na área de mapeamento da vascularização cerebral do Cebus apella e considerando a semelhança desse animal com outros primatas descritos, inclusive os humanos, estudou-se a morfologia das artérias cerebelares superiores, que destinam a irrigar a superfície superior do cerebelo. 57 hemisférios cerebelares foram injetados com látex corado e fixados em solução de formol a 10%, dissecados sob mesoscopia de luz com microdissecações. As artérias cerebelares superiores são simétricas em 84,21% e assimétricas em 7,01%, ramificam-se em 4 ramos: sendo 1 para o mesencéfalo e 3 troncos principais para a superfície superior do cerebelo e regiões anterior dessa superfície. Estas artérias terminam na fissura póstero-superior ou pós-semilunar após emitir vários ramos colaterais de hierarquia decrescente de calibreIn order to continue studies already done in the area of mapping the cerebral vascularization of Cebus paella and taking into consideration the resemblance of this animal with other primates described, humans included, we studied the morphology of the superior cerebellar arteries determined to perfuse the superior surface of the cerebellum. Fifty-seven cerebellar hemispheres were injected with stained latex, fixed in 10% formol solution and dissected under light mesoscopy. The superior cerebellar arteries are symmetrical in 84,21% and asymmetrical in 7,01%, and give off four branches, one to the mesencephalon and three mains branches to the upper surface of the cerebellum and its anterior portion. These arteries end in the posterior superior or post-semilunar fissure, after giving off many collaterals of decreasing diameter

Deep Learning for Brain MRI Segmentation: State of the Art and Future Directions.

Science.gov (United States)

Akkus, Zeynettin; Galimzianova, Alfiia; Hoogi, Assaf; Rubin, Daniel L; Erickson, Bradley J

2017-08-01

Quantitative analysis of brain MRI is routine for many neurological diseases and conditions and relies on accurate segmentation of structures of interest. Deep learning-based segmentation approaches for brain MRI are gaining interest due to their self-learning and generalization ability over large amounts of data. As the deep learning architectures are becoming more mature, they gradually outperform previous state-of-the-art classical machine learning algorithms. This review aims to provide an overview of current deep learning-based segmentation approaches for quantitative brain MRI. First we review the current deep learning architectures used for segmentation of anatomical brain structures and brain lesions. Next, the performance, speed, and properties of deep learning approaches are summarized and discussed. Finally, we provide a critical assessment of the current state and identify likely future developments and trends.

PARA'04, State-of-the-art in scientific computing

DEFF Research Database (Denmark)

Madsen, Kaj; Wasniewski, Jerzy

This meeting in the series, the PARA'04 Workshop with the title ``State of the Art in Scientific Computing'', was held in Lyngby, Denmark, June 20-23, 2004. The PARA'04 Workshop was organized by Jack Dongarra from the University of Tennessee and Oak Ridge National Laboratory, and Kaj Madsen and J...

The Brazilian state-of-the-art of hydrolysis; Estado da arte da hidrolise no Brasil

Energy Technology Data Exchange (ETDEWEB)

Carioca, Jose Osvaldo Beserra; Paula, Haroldo Cesar Beserra de; Lal Arora, Harbans; Selvam, P.V. Pannir [Nucleo de Fontes Nao-Convencionais de Energia, Fortaleza, CE, (Brazil)

1988-12-31

This paper presents a study of the state-of-the-art of technologies developed for acid and enzymatic hydrolysis of lignin and cellulose materials in Brazil. The information collected leads us to conclude that Brazil has achieved a high level of technological development. However, the industrial projects for production of alcohol from cassava have not proved successful due mainly to lack of agricultural experience and its low productivity. (author) 26 refs., 13 figs., 2 tabs.

Tratamento endovascular de aneurisma da artéria renal por embolização com micromolas preservando o fluxo sangüíneo renal: relato de caso Endovascular treatment of renal artery aneurysm using microcoil embolization and renal blood flow preservation: case report

Directory of Open Access Journals (Sweden)

Marco Aurélio Cardozo

2007-06-01

Full Text Available O tratamento endovascular da doença aneurismática da artéria renal tem sido, cada vez mais, aceito como uma alternativa à cirurgia convencional, especialmente em casos de aneurismas complexos intra-parenquimatosos ou que comprometam a bifurcação da artéria renal. Os autores relatam a experiência do tratamento endovascular de uma paciente com aneurisma sacular da bifurcação da artéria renal direita, associado à hipertensão renovascular de difícil controle. Foi realizada a cateterização seletiva da artéria renal, com a inserção de micromolas no saco aneurismático. O aneurisma foi completamente ocluído com preservação total do fluxo sanguíneo renal. A evolução clínica foi satisfatória com redução significativa das medicações anti-hipertensivas. A angio-tomografia de controle, após o oitavo mês do procedimento, confirmou o sucesso do tratamento.Endovascular treatment of renal artery aneurysmal disease has been increasingly accepted as an alternative to conventional surgery, especially in cases of renal artery bifurcation or complex intrarenal aneurysms. The authors report a case of endovascular treatment of a saccular aneurysm of the right renal artery bifurcation associated with poorly controlled renovascular hypertension. Selective catheterization of the renal artery was performed and microcoils were inserted into the aneurysmal sac. The aneurysm was completely obliterated with total preservation of renal blood flow. Clinical evolution was satisfactory with significant reduction in anti-hypertensive drugs. Control tomographic angiography, after eight months, confirmed treatment success.

State of the art of solid state dosimetry; Estado da arte em dosimetria do estado solido

Energy Technology Data Exchange (ETDEWEB)

Souza, Susana O., E-mail: sosouza@ufs.br [Universidade Federal de Sergipe (UFS), Sao Cristovao, SE (Brazil); Yamamoto, Takayoshi [Radioisotope Research Center, Osaka University (Japan); D' Errico, Francesco, E-mail: francesco.derrico@yale.edu [Yale University, School of Medicine, CT (United States)

2014-07-01

Passive solid-state detectors still dominate the personal dosimetry field. This article provides state of the art in this field and summarizes the most recent works presented on TL, OSL and RPL during the 17th International Conference on Solid State Dosimetry held in Recife in September 2013. The Article contains in particular the techniques Thermoluminescence (TL), Optically Stimulated Luminescence (OSL), radio photoluminescence (RPL). Thermoluminescence has the biggest advantage of the wide availability of commercial materials for dosimetry, and the nature tissue-equivalent of several of these materials. The limitation of the TL dosimetry presents fading luminance signal and the need for high temperatures to obtain the signal. The Optically Stimulated Luminescence has the advantages of high sensitivity, the possibility of multiple reading, while its limit is the need to use response compensating filters in addition to the high cost of equipment and dosimeters still restricted very few options trading . The radio photoluminescence has a reading that is completely non-destructive, but their dosimeters present lack of tissue-equivalent and a high cost. Presents the details of the techniques and the advantages and limitations of each of these will be discussed.

State of the Art of HVAC Technology in Europe and America

DEFF Research Database (Denmark)

Olesen, Bjarne W.; Kazanci, Ongun Berk

2015-01-01

of energy sources and energy generators are very much similar. This paper will present state-of the art-off energy efficient systems that will provide a good indoor environmental quality at a decreased energy use. Low Temperature Heating and High Temperature Cooling systems are an important requirement...... mechanisms and media to emit and remove heat or moisture from indoor spaces (e.g. hydronic radiant heating and cooling systems, fan-coil units, and active beams). The main differences between HVAC systems in Europe, North America and other parts of the world are often the indoor terminal units. Type...... for increasing the energy efficiency of HVAC (heating, ventilation and air-conditioning) systems and for increasing the amount of renewable energy used. Especially these types of systems are getting increasing attention in Europe and North-America. In the present study, operation characteristics, possibilities...

Antimonumentos: trabalho de memória e de resistência

Directory of Open Access Journals (Sweden)

Márcio Seligmann-Silva

2016-04-01

Full Text Available Resumo Este ensaio apresenta uma reflexão sobre o fenômeno dos "antimonumentos" que surgiram no final do século XX como uma forma de lidar, pelo viés das artes, com a violência de Estado, como nos casos do nazismo e das ditaduras latino-americanas. Este texto faz inicialmente uma retomada da mnemotécnica, ou seja, da antiga "arte da memória", que tem como seu pai mítico Simônides de Ceos, para em seguida apresentar a cena moderna da "arte da memória" sob a rubrica dos antimonumentos. O trabalho apresenta e discute obras de, entre outros artistas, Jochen Gerz, Horst Hoheisel, Andreas Knitz, Marcelo Brodsky e Fulvia Molina.

Radiation nursery and occupational exposure: state-of-art

International Nuclear Information System (INIS)

Melo, J.A.C.; Huhn, A.; Viana, E.; Rosa, G.; Luz, K.R.; Derech, R.

2015-01-01

Documentary research with the aim to reflect on the state of the art in radiological nursing, on the nursing work and occupational hazards they are exposed, from articles produced in Brazil. The survey was conducted in the BVS, the study consisted of seven articles published from 2002 to 2012. Regarding the main variables studied in the articles, issues emerged related to working conditions and biosafety, performance of nurses, legislation, continuing education and difficulties and needs of nursing staff . It was noticed that is recent the interest in the field, but the work of nurses in radiological technologies must be grounded in current scientific knowledge and with proper technique, to the achievement of the desired clinical outcome and to promote their safety, the team and also the patient. (author)

Supplier selection problem: A state-of-the-art review

Directory of Open Access Journals (Sweden)

Nilesh R. Ware

2012-08-01

Full Text Available In the global competitiveness and growing market environment, “Actual competition is not between firms against firm, than supplier against supplier”. Globally in the fastest market development world gets closer and closer. Consumers prefer fast delivery, economical product, excellent service and high quality product with desired service level. For successful management of this supply chain, supplier considered as the base source for all processes. Therefore, an efficient supplier selection and evaluation process needs to be incorporate. The main purpose of this paper is to provide an extensive state-of-the-art literature review and critique of the studies related to various aspects of supplier selection problem over the past two decades. Research papers appearing in the reputed and leading international journals from 1991 to 2011 are gathered and analyzed. Primary focus is given on more than 200 published and unpublished works. It has been referred extensively to carry out state-of-the-art review for supplier selection problem. Finally, paper provides future perspective based on current research trends available in the published literature.

Some Aspects of the State-of-the-Arts in Biomedical Science ...

African Journals Online (AJOL)

Summary: In the biomedical sciences, there is need to generate solutions for Africa's health and economic problems through the impact of university research. To guide organizational transformation, the author here presents some aspects of the state-of-the-arts of biomedical science research in advanced countries using a ...

State-of-the-Art in Open Courseware Initiatives Worldwide

Science.gov (United States)

Vladoiu, Monica

2011-01-01

We survey here the state-of-the-art in open courseware initiatives worldwide. First, the MIT OpenCourseWare project is overviewed, as it has been the real starting point of the OCW movement. Usually, open courseware refers to a free and open digital publication of high quality university level educational materials that are organized as courses,…

Doença oclusiva progressiva das artérias cerebrais associada a sindrome de Down: registro de um caso

Directory of Open Access Journals (Sweden)

Israel Salmen Schulz

1980-06-01

Full Text Available Registro de um caso que pode ser o segundo na literatura mundial de associação de "moyamoya" com síndrome de Down, caracterizando-se pela permeabilidade das artérias carótidas internas, cerebrais médias e anteriores. O comprometimento da circulação distai poderia levantar a possibilidade de uma alteração da microcirculação capilar e, inclusive, da ação de alguma substância não determinada, fatores que poderiam explicar a localização e bilateralidade das lesões.

CMOS image sensors: State-of-the-art

Science.gov (United States)

Theuwissen, Albert J. P.

2008-09-01

This paper gives an overview of the state-of-the-art of CMOS image sensors. The main focus is put on the shrinkage of the pixels : what is the effect on the performance characteristics of the imagers and on the various physical parameters of the camera ? How is the CMOS pixel architecture optimized to cope with the negative performance effects of the ever-shrinking pixel size ? On the other hand, the smaller dimensions in CMOS technology allow further integration on column level and even on pixel level. This will make CMOS imagers even smarter that they are already.

Modular robotics overview of the 'state of the art'

International Nuclear Information System (INIS)

Kress, R.L.; Jansen, J.F.; Hamel, W.R.

1996-08-01

The design of a robotic arm processing modular components and reconfigurable links is the general goal of a modular robotics development program. The impetus behind the pursuit of modular design is the remote engineering paradigm of improved reliability and availability provided by the ability to remotely maintain and repair a manipulator operating in a hazardous environment by removing and replacing worn or failed modules. Failed components can service off- line and away from hazardous conditions. The desire to reconfigure an arm to perform different tasks is also an important driver for the development of a modular robotic manipulator. In order to bring to fruition a truly modular manipulator, an array of technical challenges must be overcome. These range from basic mechanical and electrical design considerations such as desired kinematics, actuator types, and signal and transmission types and routings, through controls issues such as the need for control algorithms capable of stable free space and contact control, to computer and sensor design issues like consideration of the use of embedded processors and redundant sensors. This report presents a brief overview of the state of the art of technical issues relevant of modular robotic arm design. The focus is on breadth of coverage, rather than depth, in order to provide a reference frame for future development

State of the art: two-phase flow calibration techniques

International Nuclear Information System (INIS)

Stanley, M.L.

1977-01-01

The nuclear community faces a particularly difficult problem relating to the calibration of instrumentation in a two-phase flow steam/water environment. The rationale of the approach to water reactor safety questions in the United States demands that accurate measurements of mass flows in a decompressing two-phase flow be made. An accurate measurement dictates an accurate calibration. This paper addresses three questions relating to the state of the art in two-phase calibration: (1) What do we mean by calibration. (2) What is done now. (3) What should be done

State-of-the-art Versus Time-triggered Object Tracking in Advanced Driver Assistance Systems

Directory of Open Access Journals (Sweden)

Moritz Koplin

2013-04-01

Full Text Available Most state-of-the-art driver assistance systems cannot guarantee that real-time images of object states are updated within a given time interval, because the object state observations are typically sampled by uncontrolled sensors and transmitted via an indeterministic bus system such as CAN. To overcome this shortcoming, a paradigm shift toward time-triggered advanced driver assistance systems based on a deterministic bus system, such as FlexRay, is under discussion. In order to prove the feasibility of this paradigm shift, this paper develops different models of a state-of-the-art and a time-triggered advanced driver assistance system based on multi-sensor object tracking and compares them with regard to their mean performance. The results show that while the state-of-the-art model is advantageous in scenarios with low process noise, it is outmatched by the time-triggered model in the case of high process noise, i.e., in complex situations with high dynamic.

Materials on Creative Arts (Arts, Crafts, Dance, Drama, Music, Bibliotherapy) for Persons with Handicapping Conditions. Revised.

Science.gov (United States)

American Alliance for Health, Physical Education, and Recreation, Washington, DC. Information and Research Utilization Center.

Intended as a resource guide for persons who include such subjects as arts, crafts, dance, and music in programs for the handicapped, resources are listed for printed materials, audiovisual materials, resource persons and organizations, and material and equipment suppliers. Brief literature reviews sum up the state of the art in the specific art…

O planejamento do "Recreio nas Férias" na cidade Paulista de Americana Planning for the program "leisure during the school break" ("Recreio nas Férias" in the brazilian city of Americana, state of São Paulo

Directory of Open Access Journals (Sweden)

Nayara Torre de Almeida

2012-06-01

Full Text Available O presente artigo constitui um relato de experiência do processo de planejamento e implementação do projeto "Recreio nas Férias" em um dos núcleos do Programa Segundo Tempo, localizado no bairro Vila Jones na cidade Paulista de Americana. O Projeto "Recreio nas Férias" é uma iniciativa do Ministério do Esporte, implantada em 2009 com o objetivo de, no período de férias escolares, oferecer às crianças e adolescentes participantes do programa, opções de esporte e lazer (e.g., atividades lúdicas, esportivas, artísticas, culturais, sociais e turísticas que "preencham o seu tempo livre de forma prazerosa e ao mesmo tempo construtiva" (BRASIL, 2010. Confrontando tais objetivos com os estudos mais atuais no campo do lazer é possível perceber que, no campo das políticas públicas, ainda permanece a visão histórica que tende a tratar o lazer como ocupação do tempo ocioso, principalmente quando se trata das propostas voltadas às classes populares. Isso fica evidente na preocupação explícita de "preencher o tempo livre", enfatizando seu caráter ocupacional. Nesse sentido, tecemos algumas aproximações com estudos de Silva (2003, 2008 e Marcellino (1995, 2001, 2008 compreendendo o lazer como uma das possibilidades de vivência do lúdico e construção da cidadania, ou seja, buscando responder a seguinte questão: pode o lazer assumir outro papel, senão este "ocupacional" historicamente observado nas políticas de esporte e lazer voltadas às classes populares?This study reports the planning and the implementation of the program "Recreio nas Férias" in one of the centers of the program "Second Half" ("Programa Segundo Tempo", located in Vila Jones in the Brazilian city of Americana, State of São Paulo. The program "Leisure During the School Break" ("Recreio nas Férias" is a project of the Ministry of Sports, lounged in 2009. The aim was, during the school break, to provide children and adolescents with sports and leisure

State-of-the-art report on the theoretical modeling of interfacial area concentration

International Nuclear Information System (INIS)

Lee, Won Jae; Euh, Dong Jin

1998-03-01

Classical approaches based on experimental correlations and the mechanistic approaches based on the interfacial area concentration were reviewed. The study focuses on the state-of-the-art researches based on the mechanistic modeling of the interfacial area concentration. The investigation is performed by classifying the mechanistic modeling approaches into those using the number density transport equations supported with a simple algebraic relation for obtaining interfacial area concentration and those using the direct interfacial area transport equations. The modeling approaches are subdivided into one group and multi-group models. The state-of-the-art source terms of transport equations are also investigated for their applicability and limitations. (author). 62 refs., 6 tabs., 49 figs

The backstroke swimming start: state of the art.

Science.gov (United States)

de Jesus, Karla; de Jesus, Kelly; Fernandes, Ricardo J; Vilas-Boas, João Paulo; Sanders, Ross

2014-09-29

As sprint swimming events can be decided by margins as small as .01 s, thus, an effective start is essential. This study reviews and discusses the 'state of the art' literature regarding backstroke start biomechanics from 23 documents. These included two swimming specific publications, eight peer-reviewed journal articles, three from the Biomechanics and Medicine in Swimming Congress series, eight from the International Society of Biomechanics in Sports Conference Proceedings, one from a Biomechanics Congress and one academic (PhD) thesis. The studies had diverse aims, including swimmers' proficiency levels and data collection settings. There was no single consensus for defining phase descriptions; and kinematics, kinetics and EMG approaches were implemented in laboratory settings. However, researchers face great challenges in improving methods of quantifying valid, reliable and accurate data between laboratory and competition conditions. For example, starting time was defined from the starting signal to distances as disparate as ∼5 m to 22.86 m in several studies. Due to recent rule changes, some of the research outcomes now refer to obsolete backstroke start techniques, and only a few studies considered the actual international rules. This literature review indicated that further research is required, in both laboratory and competition settings focusing on the combined influences of the current rules and block configuration on backstroke starting performances.

Reactivity Insertion Accident (RIA) Capability Status in the BISON Fuel Performance Code

Energy Technology Data Exchange (ETDEWEB)

Williamson, Richard L. [Idaho National Lab. (INL), Idaho Falls, ID (United States); Folsom, Charles Pearson [Idaho National Lab. (INL), Idaho Falls, ID (United States); Pastore, Giovanni [Idaho National Lab. (INL), Idaho Falls, ID (United States); Veeraraghavan, Swetha [Idaho National Lab. (INL), Idaho Falls, ID (United States)

2016-05-01

One of the Challenge Problems being considered within CASL relates to modelling and simulation of Light Water Reactor LWR) fuel under Reactivity Insertion Accident (RIA) conditions. BISON is the fuel performance code used within CASL for LWR fuel under both normal operating and accident conditions, and thus must be capable of addressing the RIA challenge problem. This report outlines required BISON capabilities for RIAs and describes the current status of the code. Information on recent accident capability enhancements, application of BISON to a RIA benchmark exercise, and plans for validation to RIA behavior are included.

Avaliação da endotelização de hastes de stents em artérias ilíacas de coelhos

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Celso Kiyochi Takimura

Full Text Available FUNDAMENTO: A rápida endotelização pós-implante de stent é ocorrência desejável por teoricamente reduzir a possibilidade de trombose do stent. OBJETIVO: Avaliar a extensão da endotelização de hastes de stents eluidores de sirolimus (liberados da face luminal e abluminal e abluminal exclusivamente em artérias ilíacas de coelhos. MÉTODOS: Foram implantados em artérias ilíacas de 10 coelhos quatro stents eluidores de sirolimus na face luminal e abluminal, três stents eluidores de sirolimus na face abluminal, seis stents recobertos com polímero e quatro stents sem recobrimento. Após quatro semanas, foi realizada eutanásia e utilizou-se microscopia eletrônica de varredura para quantificação da área de hastes de stent exposta e da porcentagem de endotelização. RESULTADOS: A área (média ± DP (mm² de hastes expostas de stent sem recobrimento, stent recoberto com polímero, stent eluidor de sirolimus na face luminal e abluminal e stent eluidor de sirolimus na face abluminal foi de 0,12 ± 0,08; 0,09 ± 0,12; 0,60 ± 0,67 e 0,05 ± 0,04 respectivamente (p = 0,120. A porcentagem de endotelização (média ± DP (% de stent sem recobrimento, stent recoberto com polímero, stent eluidor de sirolimus na face luminal e abluminal e stent eluidor de sirolimus na face abluminal foi de 99 ± 01; 99 ± 0; 97 ± 03 e 99 ± 0 respectivamente (p = 0,133. CONCLUSÃO: Após quatro semanas de implante em artérias ilíacas de coelhos, os stents com liberação de sirolimus tanto da face luminal e abluminal quanto da face abluminal exclusivamente apresentaram taxas de endotelização de hastes de stent semelhantes aos apresentados nos demais tipos de stents sem eluição de medicamento.

Orphan diseases: state of the drug discovery art.

Science.gov (United States)

Volmar, Claude-Henry; Wahlestedt, Claes; Brothers, Shaun P

2017-06-01

Since 1983 more than 300 drugs have been developed and approved for orphan diseases. However, considering the development of novel diagnosis tools, the number of rare diseases vastly outpaces therapeutic discovery. Academic centers and nonprofit institutes are now at the forefront of rare disease R&D, partnering with pharmaceutical companies when academic researchers discover novel drugs or targets for specific diseases, thus reducing the failure risk and cost for pharmaceutical companies. Considerable progress has occurred in the art of orphan drug discovery, and a symbiotic relationship now exists between pharmaceutical industry, academia, and philanthropists that provides a useful framework for orphan disease therapeutic discovery. Here, the current state-of-the-art of drug discovery for orphan diseases is reviewed. Current technological approaches and challenges for drug discovery are considered, some of which can present somewhat unique challenges and opportunities in orphan diseases, including the potential for personalized medicine, gene therapy, and phenotypic screening.

Origem anômala de uma artéria pulmonar da aorta ascendente: resolução da hipertensão arterial pulmonar com a correção cirúrgica Anomalous origin of one pulmonary artery from the ascending aorta: surgical repair resolving pulmonary arterial hypertension

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Marco Aurélio Santos

2004-12-01

Full Text Available OBJETIVO: Enfatizar a possibilidade diagnóstica da origem anômala de uma artéria pulmonar da aorta ascendente, em lactentes com quadro de insuficiência cardíaca clinicamente intratável e sem defeito estrutural intracardíaco. MÉTODOS: Estudo retrospectivo em quatro lactentes com insuficiência cardíaca intratável, submetidos a estudo ecocardiográfico bidimensional com cortes subcostal, supraesternal e paraesternal, e a estudo hemodinâmico e angiocardiográfico na projeção ântero-posterior. RESULTADOS: Três dos quatro lactentes tinham a artéria pulmonar direita originando-se da aorta ascendente, como diagnóstico principal. No quarto paciente a artéria pulmonar esquerda originava-se da aorta ascendente associada à ampla comunicação interventricular. Os lactentes tinham pressão em ambas artérias pulmonares em nível sistêmico. Todos foram submetidos a tratamento cirúrgico que consistiu na translocação da artéria pulmonar anômala da aorta. Não houve óbitos cardíacos imediatos ou tardios. CONCLUSÃO: Uma vez estabelecido o diagnóstico de origem anômala de artéria pulmonar da aorta ascendente, na forma isolada, a correção cirúrgica deverá ser prontamente realizada, não só pelo desenvolvimento de doença vascular pulmonar, como pelos excelentes resultados cirúrgicos atualmente obtidos.OBJECTIVE: To emphasize the diagnostic possibility of the anomalous origin of one pulmonary artery from the ascending aorta in infants with clinically refractory heart failure and no intracardiac structural defect. METHODS: Retrospective study of 4 infants with refractory heart failure undergoing 2-dimensional echocardiographic study with subcostal, suprasternal, and parasternal views, and hemodynamic and angiocardiographic study in the anteroposterior projection. RESULTS: Three of the 4 infants had their right pulmonary artery originating from the ascending aorta as their major diagnosis. In the fourth patient, the left pulmonary

State of the art on the probabilistic safety assessment (P.S.A.)

International Nuclear Information System (INIS)

Devictor, N.; Bassi, A.; Saignes, P.; Bertrand, F.

2008-01-01

The use of Probabilistic Safety Assessment (PSA) is internationally increasing as a means of assessing and improving the safety of nuclear and non-nuclear facilities. To support the development of a competence on Probabilistic Safety Assessment, a set of states of the art regarding these tools and their use has been made between 2001 and 2005, in particular on the following topics: - Definition of the PSA of level 1, 2 and 3; - Use of PSA in support to design and operation of nuclear plants (risk-informed applications); - Applications to Non Reactor Nuclear Facilities. The report compiled in a single document these states of the art in order to ensure a broader use; this work has been done in the frame of the Project 'Reliability and Safety of Nuclear Facility' of the Nuclear Development and Innovation Division of the Nuclear Energy Division. As some of these states of the art have been made in support to exchanges with international partners and were written in English, a section of this document is written in English. This work is now applied concretely in support to the design of 4. Generation nuclear systems as Sodium-cooled Fast Reactors and especially Gas-cooled Fast Reactor, that have been the subject of communications during the conferences ANS (Annual Meeting 2007), PSA'08, ICCAP'08 and in the journal Science and Technology of Nuclear Installations. (authors)

Simulation of pollutants transfer in soils - State-of-the-art. State-of-the-art of the simulation of pollutants transfer in soils - Final report

International Nuclear Information System (INIS)

Bourgois, J.; Vaillant, Herve; Moszkowicz, P.; Alimi Ichola, Ibrahim; Foret, Suzanne

1997-02-01

Industrial companies use and produce numerous substances which can induce a pollution of our environment and especially of soil and groundwater. Thus, it's necessary to estimate the risk of an environmental impact from an accidental or chronic, real or potential pollution. Modelling, which allow the simulation of pollutant migration, can be used as a decision support system, either for the pollution control and prevention of the resource, or for the monitoring of the remediation of polluted sites. In the first part of this study, we established a state of the art on modelling of pollutant migration in soils. In the second part, we focused on the main simulation tools currently available on the market, and on the main agencies or laboratories working on this subject, especially in France. At the end of this study, we drew some conclusions concerning modelling of pollutant migration in soils and the main points which will form the subject of further studies: - sensitivity analysis of model to input parameters and ranking of the main parameters, - achievement of a database on the state of the art of the results on modelling realized on case studies, - development of a mobility indicator of pollutant in soil, - application field and relevance of the models. (authors)

Aneurisma sacular da artéria radial: a propósito de um caso clínico Sacular aneurysm of the radial artery: a case report

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Nádia Duarte

2011-06-01

Full Text Available Os aneurismas da artéria radial são raros e esporádicos, sendo que os pseudoaneurismas são mais frequentes do que os aneurismas verdadeiros e maioritariamente de configuração sacular. A etiologia é variada e diferenciam-se de outros diagnósticos pela pulsação e frémito. Raramente se complicam de ruptura, sendo a trombose e embolização as principais complicações. Dos casos publicados sobre aneurismas verdadeiros da artéria radial, apenas um está descrito como sendo secundário a lesão ocupacional repetitiva, sendo a maioria de causa idiopática. Os autores descrevem um caso de uma mulher de 63 anos, referenciada à consulta de Cirurgia Vascular por crescimento de massa pulsátil na tabaqueira anatómica da mão esquerda. O estudo por eco-doppler e angiografia, confirmaram o diagnóstico de aneurisma sacular da artéria radial, com 20 mm de maior eixo, arcada palmar permeável e sem sinais de embolização distal. Foi submetida a aneurismectomia parcial com laqueação dupla proximal e distal e endoaneurismorrafia. A cirurgia e pós-operatório decorreram sem complicações, nomeadamente complicações isquémicas. A propósito desde caso clínico, discute-se a abordagem diagnóstica e opções terapêuticas.Radial artery aneurysms are sporadic and rare, pseudoaneurysms are more common than true aneurysms, mainly in saccular configuration. The etiology is varied and difference from other diagnostics is done by the presence of pulse and thrill. Thrombosis and embolization are the main complications, while rupture is rare. From the reported cases of true aneurysms of the radial artery, only one is described as being secondary to repetitive occupational injury, the majority being idiopathic. The authors describe the case of a 63 year old woman, referred to a Vascular Surgery consultation because of a growing pulsatile mass in the anatomical snuffbox of the left hand. The Doppler and Angiography studies confirmed the diagnosis of

Digital astrophotography the state of the art

CERN Document Server

Ratledge, David

2005-01-01

The CCD (Charge-Coupled Device) has revolutionised optical astronomy during the past 20 years, and specialised astronomical CCD cameras are now even more affordable, colour is standard, and they provide spectacular results. "Digital Astrophotography: The State of the Art", provides some examples of the best images, and gives readers hints and tips about how to get the best out of this extraordinary technology. Experts in CCD astronomy from North America and Europe have contributed to this book, illustrating their help and advice with many beautiful colour images - the book is in full colour throughout. Techniques range from using simple webcams to highly technical aspects such as supernovae patrolling. Computer processing, stacking and image-enhancement are detailed, along with many hints and tips from the experts.

Augmented Reality and Mobile Learning: The State of the Art

Science.gov (United States)

FitzGerald, Elizabeth; Ferguson, Rebecca; Adams, Anne; Gaved, Mark; Mor, Yishay; Thomas, Rhodri

2013-01-01

In this paper, the authors examine the state of the art in augmented reality (AR) for mobile learning. Previous work in the field of mobile learning has included AR as a component of a wider toolkit but little has been done to discuss the phenomenon in detail or to examine in a balanced fashion its potential for learning, identifying both positive…

Electron beam melting state-of-the-art 1984

International Nuclear Information System (INIS)

Bakish, R.

1984-01-01

In 1984 electron beam melting and refining appear poised for an important new growth phase. The driving force for this phase is improved production economics made possible by technological advances. There is also a new and exciting growth application for electron beam melting: its use for surface properties beneficiation. This article is based in part on the content of the Conference on Electron Beam Melting and Refining, The State-of-the-Art 1983, held in November 1983 in Reno, Nevada

Digital Breast Tomosynthesis: State of the Art

Science.gov (United States)

Vedantham, Srinivasan; Vijayaraghavan, Gopal R.; Kopans, Daniel B.

2015-01-01

This topical review on digital breast tomosynthesis (DBT) is provided with the intent of describing the state of the art in terms of technology, results from recent clinical studies, advanced applications, and ongoing efforts to develop multimodality imaging systems that include DBT. Particular emphasis is placed on clinical studies. The observations of increase in cancer detection rates, particularly for invasive cancers, and the reduction in false-positive rates with DBT in prospective trials indicate its benefit for breast cancer screening. Retrospective multireader multicase studies show either noninferiority or superiority of DBT compared with mammography. Methods to curtail radiation dose are of importance. © RSNA, 2015 PMID:26599926

[Hyperbaric oxygen treatment of musculoskeletal disorders on the sports medicine. State of the art].

Science.gov (United States)

Drobnic, Franchek; Turmo, Antonio

2010-03-13

Hyperbaric oxygen therapy (OHB) is a therapeutic modality based on the properties of partial pressure of oxygen, when breathing pure oxygen under hyperbaric conditions in a chamber designed for that purpose. Its indications in medicine are considered as primary, complementary or experimental depending on the evidence based effects. From different sectors of medicine, OHB has been recently proposed as a new tool for other pathologies, primarily in musculoskeletal disorders. In this paper, the state of the art of the influence from experimental studies is reviewed. Some considerations based on these studies are hypothesized as the minimum required to obtain good results when this therapy is decided to be used as co adjuvant to standard treatment. Copyright 2009 Elsevier España, S.L. All rights reserved.

State of the art-hydraulic yaw systems for wind turbines

DEFF Research Database (Denmark)

Stubkier, Søren; Pedersen, Henrik C.; Andersen, Torben Ole

2011-01-01

This paper addresses the yawing systems of Horizontal Axis Wind Turbines (HAWT’s). HAWT’s represents close to all of the commercial large wind turbines sold today and must be considered state-of-the art within wind turbine technology. Two choices exists when considering components for the active ...

A state of the art on penetration failure estimation under external vessel cooling

International Nuclear Information System (INIS)

Min, B. T.; Park, R. J.; Kang, K. H.; Cho, Y. R.; Kim, J. W.; Kim, S. B.; Park, S. Y.; Lee, K. Y.

2000-04-01

A state of the art on penetration failure was reviewed and analyzed to establish the direction of the experimental program in the KNGR and to decide the test section design. The interaction between the corium and the reactor vessel and the corium behavior in the lower plenum of the reactor vessel were analyzed to investigate the penetration effect on severe accident progression, and the TMI-2 accident was investigated in the point of penetration failure. Theoretical model and experiment results on penetration failure under the severe accident were investigated and reviewed to establish the direction of the experimental program on the estimation of the penetration failure in the KNGR. These results were compared with the TMI-2 results. The existing test facilities on penetration failure were investigated and reviewed to decide the test section design. It can be said from the state of the art review that penetration in the lower plenum of the reactor vessel is a week point in the reactor vessel failure under the severe accident, but the reactor vessel may not be failed by penetration failure in condition with the coolant supply to the penetration. Since the penetration is different with reactor types and there is no study on estimation of the penetration welding, it is necessary to investigate failure or not of the penetration in condition with external vessel cooling to maintain the reactor vessel integrity in KNGR. In the present experimental program on the integrity estimation of the KNGR penetration, the aluminum oxide melt by thermite reaction and the test section with one penetration of the real size and real material were selected. The melt mass, the pressure of the system, and the vessel geometry were selected as an experimental parameter. (author)

Intracytoplasmic sperm injection: state of the art in humans.

Science.gov (United States)

Palermo, G D; O'Neill, C L; Chow, S; Cheung, S; Parrella, A; Pereira, N; Rosenwaks, Z

2017-12-01

Among infertile couples, 25% involve both male and female factors, while male factor alone accounts for another 25% due to oligo-, astheno-, teratozoospermia, a combination of the three, or even a complete absence of sperm cells in the ejaculate and can lead to a poor prognosis even with the help of assisted reproductive technology (ART). Intracytoplasmic sperm injection (ICSI) has been with us now for a quarter of a century and in spite of the controversy generated since its inception, it remains in the forefront of the techniques utilized in ART. The development of ICSI in 1992 has drastically decreased the impact of male factor, resulting in millions of pregnancies worldwide for couples who, without ICSI, would have had little chance of having their own biological child. This review focuses on the state of the art of ICSI regarding utility of bioassays that evaluate male factor infertility beyond the standard semen analysis and describes the current application and advances in regard to ICSI, particularly the genetic and epigenetic characteristics of spermatozoa and their impact on reproductive outcome. © 2017 Society for Reproduction and Fertility.

Neutron personal dosimetry: state-of-art

International Nuclear Information System (INIS)

Spurný, František

2005-03-01

State-of-art of the personal neutron dosimetry is presented, analysed and discussed. Particular attention is devoted to the problems of this type of the dosimetry of external exposure for radiation fields at nuclear power plants. A review of general problems of neutron dosimetry is given and the active individual dosimetry methods available and/or in the stage of development are briefly reviewed. Main attention is devoted to the analysis of the methods available for passive individual neutron dosimetry. The characteristics of these dosemeters were studied and are compared: their energy response functions, detection thresholds and the highest detection limits, the linearity of response, the influence of environmental factors, etc. Particular attention is devoted to their behavior in reactor neutron fields. It is concluded that the choice of the neutron personal dosemeter depends largely on the conditions in which the instrument should be used (neutron spectrum, the level of exposure and the exposure rate, etc.). The results obtained with some of these dosemeters during international intercomparisons are also presented. Particular attention is paid to the personal neutron dosimeter developed and routinely used by National Personal Dosimetry Service Ltd. in the Czech Republic. (author)

Setting ART initiation targets in response to changing guidelines: The importance of addressing both steady-state and backlog.

Science.gov (United States)

Martin, Catherine; Naidoo, Nicolette P; Venter, W D Francois; Jaffer, Ambereen; Barker, Pierre M

2014-05-12

Target setting is useful in planning, assessing and improving antiretroviral treatment (ART) programmes. In the past 4 years, the ART initiation environment has been transformed due to the change in eligibility criteria (starting ART at a CD4+ count ART. To describe and illustrate the use of a target-setting model for estimating district-based targets in the era of an expanding ART programme and changing CD4+ count thresholds for ART initiation. Using previously described models and data for annual new HIV infections, we estimated both steady-state need for ART initiation and backlog in a North West Province district, accounting for the shift in eligibility. Comparison of actual v. targeted ART initiations was undertaken. The change in CD4+ count threshold adds a once-off group of newly eligible patients to the pool requiring ART - the backlog. The steady-state remains unchanged as it is determined by the annual rate of new HIV infections in previous years. The steady-state need for the district was 639 initiations/month, and the backlog was ~15,388 patients. After the shift in eligibility in September 2011, the steady-state target was exceeded over several months with some backlog addressed. Of the total backlog for this district, 72% remains to be cleared. South Africa has two pools of patients who need ART: the steady-state of HIV-infected patients entering the programme each year, determined by historical infection rates; and the backlog created by the shift in eligibility. The healthcare system needs to build long- term capacity to meet the steady-state need for ART and additional capacity to address the backlog.

STATE-OF-THE-ART TASKS AND ACHIEVEMENTS OF PARALINGUISTIC SPEECH ANALYSIS SYSTEMS

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A. A. Karpov

2016-07-01

Full Text Available We present analytical survey of state-of-the-art actual tasks in the area of computational paralinguistics, as well as the recent achievements of automatic systems for paralinguistic analysis of conversational speech. Paralinguistics studies non-verbal aspects of human communication and speech such as: natural emotions, accents, psycho-physiological states, pronunciation features, speaker’s voice parameters, etc. We describe architecture of a baseline computer system for acoustical paralinguistic analysis, its main components and useful speech processing methods. We present some information on an International contest called Computational Paralinguistics Challenge (ComParE, which is held each year since 2009 in the framework of the International conference INTERSPEECH organized by the International Speech Communication Association. We present sub-challenges (tasks that were proposed at the ComParE Challenges in 2009-2016, and analyze winning computer systems for each sub-challenge and obtained results. The last completed ComParE-2015 Challenge was organized in September 2015 in Germany and proposed 3 sub-challenges: 1 Degree of Nativeness (DN sub-challenge, determination of nativeness degree of speakers based on acoustics; 2 Parkinson's Condition (PC sub-challenge, recognition of a degree of Parkinson’s condition based on speech analysis; 3 Eating Condition (EC sub-challenge, determination of the eating condition state during speaking or a dialogue, and classification of consumed food type (one of seven classes of food by the speaker. In the last sub-challenge (EC, the winner was a joint Turkish-Russian team consisting of the authors of the given paper. We have developed the most efficient computer-based system for detection and classification of the corresponding (EC acoustical paralinguistic events. The paper deals with the architecture of this system, its main modules and methods, as well as the description of used training and evaluation

Conservation physiology of marine fishes: state of the art and prospects for policy

DEFF Research Database (Denmark)

McKenzie, David J.; Axelsson, Michael; Chabot, Denis

2016-01-01

The state of the art of research on the environmental physiology of marine fishes is reviewed from the perspective of how it can contribute to conservation of biodiversity and fishery resources. A major constraint to application of physiological knowledge for conservation of marine fishes...... broad applications for conservation physiology research if it provides a universal mechanism to link physiological function with ecological performance and population dynamics of fishes, through effects of abiotic conditions on aerobic metabolic scope. The available data indicate, however......, that the paradigm is not universal, so further research is required on a wide diversity of species. Fish physiologists should interact closely with researchers developing ecological models, in order to investigate how integrating physiological information improves confidence in projecting effects of global change...

Melancolia, memória e subjetividade

OpenAIRE

Giele Rocha Dorneles

2015-01-01

A proposta desta tese é estabelecer, através de uma perspectiva comparatista, relações entre três temas articuladores: a melancolia, a memória e a subjetividade, de modo a constituir entrelaçamentos possíveis, além de buscar indicar o modo como essas três temáticas são apresentadas e representadas em diferentes formas de expressão das artes, partindo de obras literárias - como “A maior flor do mundo” e “As pequenas memórias”, entre outras de José Saramago, e de autores como Charles Baudelaire...

PRA: an evaluation of state-of-the-art

International Nuclear Information System (INIS)

Joksimovich, V.

1985-01-01

Some elements of the probabilistic risk assessment (PRA) methodology can be characterized as mature and are even ready for some kind of a standardization effort. Other elements are still, however, in a rapid state of evolution. Questions are continuously being asked regarding maturity of PRA techniques vis-a-vis a regulatory decision-making process. Establishing a framework for evaluating state-of-the-art in any technological field is a challenging task. An implementation of a selected framework to a satisfactory conclusion is a monumental task. Of course, these types of issues can be discussed meaningfully only if they are tied to a particular application. The author's participation in the NSF-sponsored risk assessment project is discussed in the paper. The evaluation employed here makes use of the following five evaluation criteria: logical soundness, completeness, accuracy, acceptability, and practicality

Mechanical Ventilation: State of the Art.

Science.gov (United States)

Pham, Tài; Brochard, Laurent J; Slutsky, Arthur S

2017-09-01

Mechanical ventilation is the most used short-term life support technique worldwide and is applied daily for a diverse spectrum of indications, from scheduled surgical procedures to acute organ failure. This state-of-the-art review provides an update on the basic physiology of respiratory mechanics, the working principles, and the main ventilatory settings, as well as the potential complications of mechanical ventilation. Specific ventilatory approaches in particular situations such as acute respiratory distress syndrome and chronic obstructive pulmonary disease are detailed along with protective ventilation in patients with normal lungs. We also highlight recent data on patient-ventilator dyssynchrony, humidified high-flow oxygen through nasal cannula, extracorporeal life support, and the weaning phase. Finally, we discuss the future of mechanical ventilation, addressing avenues for improvement. Copyright © 2017 Mayo Foundation for Medical Education and Research. Published by Elsevier Inc. All rights reserved.

State of art in FE-based fuel performance codes

International Nuclear Information System (INIS)

Kim, Hyo Chan; Yang, Yong Sik; Kim, Dae Ho; Bang, Je Geon; Kim, Sun Ki; Koo, Yang Hyun

2013-01-01

Fuel performance codes approximate this complex behavior using an axisymmetric, axially-stacked, one-dimensional radial representation to save computation cost. However, the need for improved modeling of PCMI and, particularly, the importance of multidimensional capability for accurate fuel performance simulation has been identified as safety margin decreases. Finite element (FE) method that is reliable and proven solution in mechanical field has been introduced into fuel performance codes for multidimensional analysis. The present state of the art in numerical simulation of FE-based fuel performance predominantly involves 2-D axisymmetric model and 3-D volumetric model. The FRAPCON and FRAPTRAN own 1.5-D and 2-D FE model to simulate PCMI and cladding ballooning. In 2-D simulation, the FALCON code, developed by EPRI, is a 2-D (R-Z and R-θ) fully thermal-mechanically coupled steady-state and transient FE-based fuel behavior code. The French codes TOUTATIS and ALCYONE which are 3-D, and typically used to investigate localized behavior. In 2008, the Idaho National Laboratory (INL) has been developing multidimensional (2-D and 3-D) nuclear fuel performance code called BISON. In this paper, the current state of FE-based fuel performance code and their models are presented. Based on investigation into the codes, requirements and direction of development for new FE-based fuel performance code can be discussed. Based on comparison of models in FE-based fuel performance code, status of art in the codes can be discussed. A new FE-based fuel performance code should include typical pellet and cladding models which all codes own. In particular, specified pellet and cladding model such as gaseous swelling and high burnup structure (HBS) model should be developed to improve accuracy of code as well as consider AC condition. To reduce computation cost, the approximated gap and the optimized contact model should be also developed

Pulmonary artery catheter complications: report on a case of a knot accident and literature review Complicações do cateter de artéria pulmonar: relato de caso de formação de nó verdadeiro revisão da literatura

Directory of Open Access Journals (Sweden)

Marcelo Cruz Lopes

2004-01-01

Full Text Available A particular event concerning a Swan-Ganz catheter complication is reported. A 41-year-old woman was admitted at the emergency room of our hospital with massive gastrointestinal bleeding. A total gastrectomy was performed. During the postoperative period in the intensive care unit , the patient maintained hemodynamic instability. Invasive hemodynamic monitoring with a pulmonary artery catheter was then indicated. During the maneuvers to insert the catheter, a true knot formation was identified at the level of the superior vena cava. Several maneuvers by radiological endovascular invasive techniques allowed removal of the catheter. The authors describe the details of this procedure and provide comments regarding the various techniques that were employed in overcoming this event. A comprehensive review of evidence regarding the benefits and risks of pulmonary artery catheterization was performed. The consensus statement regarding the indications, utilization, and management of the pulmonary artery catheterization that were issued by a consensus conference held in 1996 are also discussed in detail.É relatada uma complicação infreqüente , associada ao uso do Cateter de Artéria Pulmonar. Uma paciente de 41 anos foi admitida no Pronto Socorro do nosso hospital com hemorragia digestiva alta grave. A doente foi submetida à gastrectomia total. Na Unidade de Terapia Intensiva, evoluiu com instabilidade hemodinâmica, sendo indicada a monitorização hemodinâmica invasiva com cateter de artéria pulmonar. Durante as manobras para o correto posicionamento do cateter na artéria pulmonar, foi diagnosticado formação de nó verdadeiro, ao nível da veia cava superior. Os autores discutem as várias opções técnicas empregadas para a resolução desta complicação, através do emprego da radiologia intervencionista endovascular. Extensa revisão da literatura procurando discutir os benefícios e riscos envolvidos na monitorização hemodin

Mining Tacitus: secrets of empire, nature and art in the reason of state.

Science.gov (United States)

Keller, Vera

2012-06-01

A new political practice, the 'reason of state', informed the ends and practices of natural study in the late sixteenth century. Informed by the study of the Roman historian Tacitus, political writers gathered 'secrets of empire' from both history and travel. Following the economic reorientation of 'reason of state' by Giovanni Botero (1544-1617), such secrets came to include bodies of useful particulars concerning nature and art collected by an expanding personnel of intelligencers. A comparison between various writers describing wide-scale collections, such as Botero, Francis Bacon (1561-1626), Jakob Bornitz (1560-1625) and Matthias Bernegger (1582-1640), reveals that seventeenth-century natural intelligencers across Europe not only were analogous to political intelligencers, but also were sometimes one and the same. Those seeking political prudence cast themselves as miners, prying precious particulars from the recesses of history, experience and disparate disciplines, including mathematics, alchemy and natural philosophy. The seventeenth-century practice of combining searches for secrets of empire, nature and art contests a frequent historiographical divide between empirical science and Tacitism or reason of state. It also points to the ways political cunning shaped the management of information for both politics and the study of nature and art.

Serious Non-AIDS Conditions in HIV: Benefit of Early ART.

Science.gov (United States)

Lundgren, Jens D; Borges, Alvaro H; Neaton, James D

2018-04-01

Optimal control of HIV can be achieved by early diagnosis followed by the initiation of antiretroviral therapy (ART). Two large randomised trials (TEMPRANO and START) have recently been published documenting the clinical benefits to HIV-positive adults of early ART initiation. Main findings are reviewed with a focus on serious non-AIDS (SNA) conditions. Data from the two trials demonstrated that initiating ART early in the course of HIV infection resulted in marked reductions in the risk of opportunistic diseases and invasive bacterial infections. This indicates that HIV causes immune impairment in early infection that is remedied by controlling viral replication. Intriguingly, in START, a marked reduction in risk of cancers, both infection-related and unrelated types of cancers, was observed. Like the findings for opportunistic infections, this anti-cancer effect of early ART shows how the immune system influences important pro-oncogenic processes. In START, there was also some evidence suggesting that early ART initiation preserved kidney function, although the clinical consequence of this remains unclear. Conversely, while no adverse effects were evident, the trials did not demonstrate a clear effect on metabolic-related disease outcomes, pulmonary disease, or neurocognitive function. HIV causes immune impairment soon after acquisition of infection. ART reverses this harm at least partially. The biological nature of the immune impairment needs further elucidation, as well as mechanisms and clinical impact of innate immune activation. Based on the findings from TEMPRANO and START, and because ART lowers the risk of onward transmission, ART initiation should be offered to all persons following their diagnosis of HIV.

Viabilidade do baço de ratos após a ligadura simultânea da artéria e veia esplênicas

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Danilo Nagib Salomão Paulo

Full Text Available OBJETIVO: A ligadura simultânea da artéria e veia esplênicas, com preservação do baço, é realizada em seres humanos, na pancreatectomia caudal, mas o efeito exato dessa ligadura sobre o baço não é bem conhecido. O objetivo deste trabalho foi verificar o efeito da ligadura dos vasos esplênicos principais no baço de ratos. MÉTODO: Foram operados 58 ratos Wistar, machos, variando entre 230 e 408 g de peso. Os animais foram divididos aleatoriamente em dois grupos: grupo 1, simulação (N=23, submetido à laparotomia e manipulação do baço; grupo 2 (N=35 submetido à ligadura simultânea da artéria e veia esplênica. Todos os animais foram mortos 12 dias após a operação. O baço era retirado, pesado, fixado em formol a 4%, incluído em parafina, e os cortes foram corados pela hematoxilina e eosina para exame microscópico. RESULTADOS: O baço era normal em todos os animais do grupo 1 e em três dos 34 animais ( 8,82% do grupo 2. Ocorreu infarto branco parcial do baço em 91,18% dos animais do grupo 2. O percentual médio de massa esplênica viável nos baços com infartos foi de 56,9 + 21,8 %. O aspecto histopatológico mostrou arquitetura preservada na porção não infartada, e neoformação conjuntivo-vascular cicatricial substituindo as áreas necrosadas. CONCLUSÕES: A ligadura simultânea da artéria e veias esplênicas resultou em infarto branco parcial do baço em 91,2% dos animais, com preservação mínima de 35% e média de 56,9% de massa esplênica viável. Na maioria dos animais que sofreram ligadura, o infarto se localizou na porção inferior do baço.

A state-of-the-art plasma polymerization coater for ICF targets

International Nuclear Information System (INIS)

Devine, G.; Letts, S.; Cook, R.; Brusasco, R.

1992-01-01

Increasingly stringent demands on the characteristics of plasma polymer coatings for use in Inertial Confinement Fusion (ICF) experiments have created a need for a plasma Polymerization coating system with the capability of producing a wide variety of different types of coatings as well as one that can be used to do fundamental investigations of the process conditions leading to desirable films. We report on the construction and use of just such a coating instrument. We have recognized the usefulness of computer assisted process monitoring and control, currently being developed by the semiconductor industry, in designing our own, State-of-the-art plasma polymerization device. Our system is fully computer interfaced to provide the user with the capability of collecting system parameter data over the length of the deposition experiment. The system is also designed to allow for any degree of computer control of the deposition process in the future

Ondas ultra-sônicas de alta freqüência causam disfunção endotelial em artérias coronárias caninas epicárdicas High-frequency ultrasonic waves cause endothelial dysfunction on canine epicardial coronary arteries

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Berent Discigil

2008-06-01

Full Text Available OBJETIVO: Aplicação de energia por ultra-som pode facilitar a remoção da placa ateromatosa, mas o efeito desse procedimento em vasos próximos ainda é matéria de estudos experimentais. MÉTODOS: Para determinar se a energia ultra-sônica compromete a produção de óxido nítrico, segmentos de artérias coronárias caninas foram expostos a baixos (0-10 W e altos (25 W níveis de energia por 15 segundos, utilizando-se protótipo de aparelho para a realização de endarterectomia. Após exposição, segmentos das artérias coronarianas foram estudados em organ chambers. Para os ensaios farmacológicos foram utilizadas as seguintes drogas:difosfato de adenosina (ADP, acetilcolina (Ach e fluoreto de sódio (NaF para a avaliação do relaxamento dependente do endotélio. O nitroprussiato de sódio (NPS e o isoproterenol foram utilizados para a avaliação do relaxamento independente do endotélio. RESULTADOS: A aplicação de alta energia ultra-sônica comprometeu o relaxamento dependente do endotélio induzido por ADP (10-9 - 10-4 M, Ach (10-9 - 10-4 M e NaF (0,5 -9,5 mM em artérias coronarianas epicárdicas. Entretanto, baixos valores de energia ultra-sônica não alteraram o relaxamento dependente do endotélio (nem o relaxamento máximo e nem a EC50 induzido pelos mesmos agonistas. O relaxamento da musculatura lisa vascular induzido por isoproterenol (10-9 - 10-5 M ou NPS (10-9 - 10-6 M não foi comprometido, tanto por baixos, quanto por altos níveis de energia ultra-sônica. CONCLUSÃO: Os experimentos demonstram que altas energias ultra-sônicas alteram a função endotelial. Entretanto, o ultra-som não altera a habilidade de relaxamento da musculatura lisa vascular de artérias caninas epicárdicas.OBJECTIVE: Application of ultrasound energy by an endarterectomy probe can facilitate the removal of atheromatous plaque, but the effect of this procedure on surrounding vessel structure and function is still a matter of experimental

Plume rise from stacks with scrubbers: a state-of-the-art review

International Nuclear Information System (INIS)

Schatzmann, M.; Policastro, A.J.

1984-01-01

The state of the art of predicting plume rise from stacks with scrubbers is evaluated critically. The significant moisture content of the scrubbed plume upon exit leads to important thermodynamic effects during plume rise that are unaccounted for in the usual dry plume rise theories. For example, under conditionally unstable atmospheres, a wet scrubbed plume treated as completely dry acts as if the atmosphere were stable, whereas in reality the scrubbed plume behaves instead as if the atmosphere were unstable. Even the use of moist plume models developed for application to cooling tower plume rise is not valid since these models 1) employ the Boussinesq approximation, 2) use a number of additional simplifying approximations that require small exit temperature differences between tower exit and ambient temperatures, and 3) are not calibrated to stack data